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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
| commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
| tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /tools/testing/selftests/net | |
| parent | Initial commit. (diff) | |
| download | linux-upstream.tar.xz linux-upstream.zip | |
Adding upstream version 4.19.249.upstream/4.19.249upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/net')
73 files changed, 18009 insertions, 0 deletions
diff --git a/tools/testing/selftests/net/.gitignore b/tools/testing/selftests/net/.gitignore new file mode 100644 index 000000000..78b24cf76 --- /dev/null +++ b/tools/testing/selftests/net/.gitignore @@ -0,0 +1,16 @@ +msg_zerocopy +socket +psock_fanout +psock_snd +psock_tpacket +reuseport_bpf +reuseport_bpf_cpu +reuseport_bpf_numa +reuseport_dualstack +reuseaddr_conflict +tcp_mmap +udpgso +udpgso_bench_rx +udpgso_bench_tx +tcp_inq +tls diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile new file mode 100644 index 000000000..9a3764a10 --- /dev/null +++ b/tools/testing/selftests/net/Makefile @@ -0,0 +1,23 @@ +# SPDX-License-Identifier: GPL-2.0 +# Makefile for net selftests + +CFLAGS = -Wall -Wl,--no-as-needed -O2 -g +CFLAGS += -I../../../../usr/include/ + +TEST_PROGS := run_netsocktests run_afpackettests test_bpf.sh netdevice.sh rtnetlink.sh +TEST_PROGS += fib_tests.sh fib-onlink-tests.sh pmtu.sh udpgso.sh +TEST_PROGS += udpgso_bench.sh fib_rule_tests.sh msg_zerocopy.sh psock_snd.sh +TEST_PROGS_EXTENDED := in_netns.sh +TEST_GEN_FILES = socket +TEST_GEN_FILES += psock_fanout psock_tpacket msg_zerocopy +TEST_GEN_FILES += tcp_mmap tcp_inq psock_snd +TEST_GEN_FILES += udpgso udpgso_bench_tx udpgso_bench_rx +TEST_GEN_PROGS = reuseport_bpf reuseport_bpf_cpu reuseport_bpf_numa +TEST_GEN_PROGS += reuseport_dualstack reuseaddr_conflict tls + +KSFT_KHDR_INSTALL := 1 +include ../lib.mk + +$(OUTPUT)/reuseport_bpf_numa: LDLIBS += -lnuma +$(OUTPUT)/tcp_mmap: LDFLAGS += -lpthread +$(OUTPUT)/tcp_inq: LDFLAGS += -lpthread diff --git a/tools/testing/selftests/net/config b/tools/testing/selftests/net/config new file mode 100644 index 000000000..cd3a2f154 --- /dev/null +++ b/tools/testing/selftests/net/config @@ -0,0 +1,16 @@ +CONFIG_USER_NS=y +CONFIG_BPF_SYSCALL=y +CONFIG_TEST_BPF=m +CONFIG_NUMA=y +CONFIG_NET_VRF=y +CONFIG_NET_L3_MASTER_DEV=y +CONFIG_IPV6=y +CONFIG_IPV6_MULTIPLE_TABLES=y +CONFIG_VETH=y +CONFIG_INET_XFRM_MODE_TUNNEL=y +CONFIG_NET_IPVTI=y +CONFIG_INET6_XFRM_MODE_TUNNEL=y +CONFIG_IPV6_VTI=y +CONFIG_DUMMY=y +CONFIG_BRIDGE=y +CONFIG_VLAN_8021Q=y diff --git a/tools/testing/selftests/net/fib-onlink-tests.sh b/tools/testing/selftests/net/fib-onlink-tests.sh new file mode 100755 index 000000000..864f865ee --- /dev/null +++ b/tools/testing/selftests/net/fib-onlink-tests.sh @@ -0,0 +1,467 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# IPv4 and IPv6 onlink tests + +PAUSE_ON_FAIL=${PAUSE_ON_FAIL:=no} + +# Network interfaces +# - odd in current namespace; even in peer ns +declare -A NETIFS +# default VRF +NETIFS[p1]=veth1 +NETIFS[p2]=veth2 +NETIFS[p3]=veth3 +NETIFS[p4]=veth4 +# VRF +NETIFS[p5]=veth5 +NETIFS[p6]=veth6 +NETIFS[p7]=veth7 +NETIFS[p8]=veth8 + +# /24 network +declare -A V4ADDRS +V4ADDRS[p1]=169.254.1.1 +V4ADDRS[p2]=169.254.1.2 +V4ADDRS[p3]=169.254.3.1 +V4ADDRS[p4]=169.254.3.2 +V4ADDRS[p5]=169.254.5.1 +V4ADDRS[p6]=169.254.5.2 +V4ADDRS[p7]=169.254.7.1 +V4ADDRS[p8]=169.254.7.2 + +# /64 network +declare -A V6ADDRS +V6ADDRS[p1]=2001:db8:101::1 +V6ADDRS[p2]=2001:db8:101::2 +V6ADDRS[p3]=2001:db8:301::1 +V6ADDRS[p4]=2001:db8:301::2 +V6ADDRS[p5]=2001:db8:501::1 +V6ADDRS[p6]=2001:db8:501::2 +V6ADDRS[p7]=2001:db8:701::1 +V6ADDRS[p8]=2001:db8:701::2 + +# Test networks: +# [1] = default table +# [2] = VRF +# +# /32 host routes +declare -A TEST_NET4 +TEST_NET4[1]=169.254.101 +TEST_NET4[2]=169.254.102 +# /128 host routes +declare -A TEST_NET6 +TEST_NET6[1]=2001:db8:101 +TEST_NET6[2]=2001:db8:102 + +# connected gateway +CONGW[1]=169.254.1.254 +CONGW[2]=169.254.3.254 +CONGW[3]=169.254.5.254 + +# recursive gateway +RECGW4[1]=169.254.11.254 +RECGW4[2]=169.254.12.254 +RECGW6[1]=2001:db8:11::64 +RECGW6[2]=2001:db8:12::64 + +# for v4 mapped to v6 +declare -A TEST_NET4IN6IN6 +TEST_NET4IN6[1]=10.1.1.254 +TEST_NET4IN6[2]=10.2.1.254 + +# mcast address +MCAST6=ff02::1 + + +PEER_NS=bart +PEER_CMD="ip netns exec ${PEER_NS}" +VRF=lisa +VRF_TABLE=1101 +PBR_TABLE=101 + +################################################################################ +# utilities + +log_test() +{ + local rc=$1 + local expected=$2 + local msg="$3" + + if [ ${rc} -eq ${expected} ]; then + nsuccess=$((nsuccess+1)) + printf "\n TEST: %-50s [ OK ]\n" "${msg}" + else + nfail=$((nfail+1)) + printf "\n TEST: %-50s [FAIL]\n" "${msg}" + if [ "${PAUSE_ON_FAIL}" = "yes" ]; then + echo + echo "hit enter to continue, 'q' to quit" + read a + [ "$a" = "q" ] && exit 1 + fi + fi +} + +log_section() +{ + echo + echo "######################################################################" + echo "TEST SECTION: $*" + echo "######################################################################" +} + +log_subsection() +{ + echo + echo "#########################################" + echo "TEST SUBSECTION: $*" +} + +run_cmd() +{ + echo + echo "COMMAND: $*" + eval $* +} + +get_linklocal() +{ + local dev=$1 + local pfx + local addr + + addr=$(${pfx} ip -6 -br addr show dev ${dev} | \ + awk '{ + for (i = 3; i <= NF; ++i) { + if ($i ~ /^fe80/) + print $i + } + }' + ) + addr=${addr/\/*} + + [ -z "$addr" ] && return 1 + + echo $addr + + return 0 +} + +################################################################################ +# + +setup() +{ + echo + echo "########################################" + echo "Configuring interfaces" + + set -e + + # create namespace + ip netns add ${PEER_NS} + ip -netns ${PEER_NS} li set lo up + + # add vrf table + ip li add ${VRF} type vrf table ${VRF_TABLE} + ip li set ${VRF} up + ip ro add table ${VRF_TABLE} unreachable default metric 8192 + ip -6 ro add table ${VRF_TABLE} unreachable default metric 8192 + + # create test interfaces + ip li add ${NETIFS[p1]} type veth peer name ${NETIFS[p2]} + ip li add ${NETIFS[p3]} type veth peer name ${NETIFS[p4]} + ip li add ${NETIFS[p5]} type veth peer name ${NETIFS[p6]} + ip li add ${NETIFS[p7]} type veth peer name ${NETIFS[p8]} + + # enslave vrf interfaces + for n in 5 7; do + ip li set ${NETIFS[p${n}]} vrf ${VRF} + done + + # add addresses + for n in 1 3 5 7; do + ip li set ${NETIFS[p${n}]} up + ip addr add ${V4ADDRS[p${n}]}/24 dev ${NETIFS[p${n}]} + ip addr add ${V6ADDRS[p${n}]}/64 dev ${NETIFS[p${n}]} nodad + done + + # move peer interfaces to namespace and add addresses + for n in 2 4 6 8; do + ip li set ${NETIFS[p${n}]} netns ${PEER_NS} up + ip -netns ${PEER_NS} addr add ${V4ADDRS[p${n}]}/24 dev ${NETIFS[p${n}]} + ip -netns ${PEER_NS} addr add ${V6ADDRS[p${n}]}/64 dev ${NETIFS[p${n}]} nodad + done + + ip -6 ro add default via ${V6ADDRS[p3]/::[0-9]/::64} + ip -6 ro add table ${VRF_TABLE} default via ${V6ADDRS[p7]/::[0-9]/::64} + + set +e +} + +cleanup() +{ + # make sure we start from a clean slate + ip netns del ${PEER_NS} 2>/dev/null + for n in 1 3 5 7; do + ip link del ${NETIFS[p${n}]} 2>/dev/null + done + ip link del ${VRF} 2>/dev/null + ip ro flush table ${VRF_TABLE} + ip -6 ro flush table ${VRF_TABLE} +} + +################################################################################ +# IPv4 tests +# + +run_ip() +{ + local table="$1" + local prefix="$2" + local gw="$3" + local dev="$4" + local exp_rc="$5" + local desc="$6" + + # dev arg may be empty + [ -n "${dev}" ] && dev="dev ${dev}" + + run_cmd ip ro add table "${table}" "${prefix}"/32 via "${gw}" "${dev}" onlink + log_test $? ${exp_rc} "${desc}" +} + +run_ip_mpath() +{ + local table="$1" + local prefix="$2" + local nh1="$3" + local nh2="$4" + local exp_rc="$5" + local desc="$6" + + # dev arg may be empty + [ -n "${dev}" ] && dev="dev ${dev}" + + run_cmd ip ro add table "${table}" "${prefix}"/32 \ + nexthop via ${nh1} nexthop via ${nh2} + log_test $? ${exp_rc} "${desc}" +} + +valid_onlink_ipv4() +{ + # - unicast connected, unicast recursive + # + log_subsection "default VRF - main table" + + run_ip 254 ${TEST_NET4[1]}.1 ${CONGW[1]} ${NETIFS[p1]} 0 "unicast connected" + run_ip 254 ${TEST_NET4[1]}.2 ${RECGW4[1]} ${NETIFS[p1]} 0 "unicast recursive" + + log_subsection "VRF ${VRF}" + + run_ip ${VRF_TABLE} ${TEST_NET4[2]}.1 ${CONGW[3]} ${NETIFS[p5]} 0 "unicast connected" + run_ip ${VRF_TABLE} ${TEST_NET4[2]}.2 ${RECGW4[2]} ${NETIFS[p5]} 0 "unicast recursive" + + log_subsection "VRF device, PBR table" + + run_ip ${PBR_TABLE} ${TEST_NET4[2]}.3 ${CONGW[3]} ${NETIFS[p5]} 0 "unicast connected" + run_ip ${PBR_TABLE} ${TEST_NET4[2]}.4 ${RECGW4[2]} ${NETIFS[p5]} 0 "unicast recursive" + + # multipath version + # + log_subsection "default VRF - main table - multipath" + + run_ip_mpath 254 ${TEST_NET4[1]}.5 \ + "${CONGW[1]} dev ${NETIFS[p1]} onlink" \ + "${CONGW[2]} dev ${NETIFS[p3]} onlink" \ + 0 "unicast connected - multipath" + + run_ip_mpath 254 ${TEST_NET4[1]}.6 \ + "${RECGW4[1]} dev ${NETIFS[p1]} onlink" \ + "${RECGW4[2]} dev ${NETIFS[p3]} onlink" \ + 0 "unicast recursive - multipath" + + run_ip_mpath 254 ${TEST_NET4[1]}.7 \ + "${CONGW[1]} dev ${NETIFS[p1]}" \ + "${CONGW[2]} dev ${NETIFS[p3]} onlink" \ + 0 "unicast connected - multipath onlink first only" + + run_ip_mpath 254 ${TEST_NET4[1]}.8 \ + "${CONGW[1]} dev ${NETIFS[p1]} onlink" \ + "${CONGW[2]} dev ${NETIFS[p3]}" \ + 0 "unicast connected - multipath onlink second only" +} + +invalid_onlink_ipv4() +{ + run_ip 254 ${TEST_NET4[1]}.11 ${V4ADDRS[p1]} ${NETIFS[p1]} 2 \ + "Invalid gw - local unicast address" + + run_ip ${VRF_TABLE} ${TEST_NET4[2]}.11 ${V4ADDRS[p5]} ${NETIFS[p5]} 2 \ + "Invalid gw - local unicast address, VRF" + + run_ip 254 ${TEST_NET4[1]}.101 ${V4ADDRS[p1]} "" 2 "No nexthop device given" + + run_ip 254 ${TEST_NET4[1]}.102 ${V4ADDRS[p3]} ${NETIFS[p1]} 2 \ + "Gateway resolves to wrong nexthop device" + + run_ip ${VRF_TABLE} ${TEST_NET4[2]}.103 ${V4ADDRS[p7]} ${NETIFS[p5]} 2 \ + "Gateway resolves to wrong nexthop device - VRF" +} + +################################################################################ +# IPv6 tests +# + +run_ip6() +{ + local table="$1" + local prefix="$2" + local gw="$3" + local dev="$4" + local exp_rc="$5" + local desc="$6" + + # dev arg may be empty + [ -n "${dev}" ] && dev="dev ${dev}" + + run_cmd ip -6 ro add table "${table}" "${prefix}"/128 via "${gw}" "${dev}" onlink + log_test $? ${exp_rc} "${desc}" +} + +run_ip6_mpath() +{ + local table="$1" + local prefix="$2" + local opts="$3" + local nh1="$4" + local nh2="$5" + local exp_rc="$6" + local desc="$7" + + run_cmd ip -6 ro add table "${table}" "${prefix}"/128 "${opts}" \ + nexthop via ${nh1} nexthop via ${nh2} + log_test $? ${exp_rc} "${desc}" +} + +valid_onlink_ipv6() +{ + # - unicast connected, unicast recursive, v4-mapped + # + log_subsection "default VRF - main table" + + run_ip6 254 ${TEST_NET6[1]}::1 ${V6ADDRS[p1]/::*}::64 ${NETIFS[p1]} 0 "unicast connected" + run_ip6 254 ${TEST_NET6[1]}::2 ${RECGW6[1]} ${NETIFS[p1]} 0 "unicast recursive" + run_ip6 254 ${TEST_NET6[1]}::3 ::ffff:${TEST_NET4IN6[1]} ${NETIFS[p1]} 0 "v4-mapped" + + log_subsection "VRF ${VRF}" + + run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::1 ${V6ADDRS[p5]/::*}::64 ${NETIFS[p5]} 0 "unicast connected" + run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::2 ${RECGW6[2]} ${NETIFS[p5]} 0 "unicast recursive" + run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::3 ::ffff:${TEST_NET4IN6[2]} ${NETIFS[p5]} 0 "v4-mapped" + + log_subsection "VRF device, PBR table" + + run_ip6 ${PBR_TABLE} ${TEST_NET6[2]}::4 ${V6ADDRS[p5]/::*}::64 ${NETIFS[p5]} 0 "unicast connected" + run_ip6 ${PBR_TABLE} ${TEST_NET6[2]}::5 ${RECGW6[2]} ${NETIFS[p5]} 0 "unicast recursive" + run_ip6 ${PBR_TABLE} ${TEST_NET6[2]}::6 ::ffff:${TEST_NET4IN6[2]} ${NETIFS[p5]} 0 "v4-mapped" + + # multipath version + # + log_subsection "default VRF - main table - multipath" + + run_ip6_mpath 254 ${TEST_NET6[1]}::4 "onlink" \ + "${V6ADDRS[p1]/::*}::64 dev ${NETIFS[p1]}" \ + "${V6ADDRS[p3]/::*}::64 dev ${NETIFS[p3]}" \ + 0 "unicast connected - multipath onlink" + + run_ip6_mpath 254 ${TEST_NET6[1]}::5 "onlink" \ + "${RECGW6[1]} dev ${NETIFS[p1]}" \ + "${RECGW6[2]} dev ${NETIFS[p3]}" \ + 0 "unicast recursive - multipath onlink" + + run_ip6_mpath 254 ${TEST_NET6[1]}::6 "onlink" \ + "::ffff:${TEST_NET4IN6[1]} dev ${NETIFS[p1]}" \ + "::ffff:${TEST_NET4IN6[2]} dev ${NETIFS[p3]}" \ + 0 "v4-mapped - multipath onlink" + + run_ip6_mpath 254 ${TEST_NET6[1]}::7 "" \ + "${V6ADDRS[p1]/::*}::64 dev ${NETIFS[p1]} onlink" \ + "${V6ADDRS[p3]/::*}::64 dev ${NETIFS[p3]} onlink" \ + 0 "unicast connected - multipath onlink both nexthops" + + run_ip6_mpath 254 ${TEST_NET6[1]}::8 "" \ + "${V6ADDRS[p1]/::*}::64 dev ${NETIFS[p1]} onlink" \ + "${V6ADDRS[p3]/::*}::64 dev ${NETIFS[p3]}" \ + 0 "unicast connected - multipath onlink first only" + + run_ip6_mpath 254 ${TEST_NET6[1]}::9 "" \ + "${V6ADDRS[p1]/::*}::64 dev ${NETIFS[p1]}" \ + "${V6ADDRS[p3]/::*}::64 dev ${NETIFS[p3]} onlink" \ + 0 "unicast connected - multipath onlink second only" +} + +invalid_onlink_ipv6() +{ + local lladdr + + lladdr=$(get_linklocal ${NETIFS[p1]}) || return 1 + + run_ip6 254 ${TEST_NET6[1]}::11 ${V6ADDRS[p1]} ${NETIFS[p1]} 2 \ + "Invalid gw - local unicast address" + run_ip6 254 ${TEST_NET6[1]}::12 ${lladdr} ${NETIFS[p1]} 2 \ + "Invalid gw - local linklocal address" + run_ip6 254 ${TEST_NET6[1]}::12 ${MCAST6} ${NETIFS[p1]} 2 \ + "Invalid gw - multicast address" + + lladdr=$(get_linklocal ${NETIFS[p5]}) || return 1 + run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::11 ${V6ADDRS[p5]} ${NETIFS[p5]} 2 \ + "Invalid gw - local unicast address, VRF" + run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::12 ${lladdr} ${NETIFS[p5]} 2 \ + "Invalid gw - local linklocal address, VRF" + run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::12 ${MCAST6} ${NETIFS[p5]} 2 \ + "Invalid gw - multicast address, VRF" + + run_ip6 254 ${TEST_NET6[1]}::101 ${V6ADDRS[p1]} "" 2 \ + "No nexthop device given" + + # default VRF validation is done against LOCAL table + # run_ip6 254 ${TEST_NET6[1]}::102 ${V6ADDRS[p3]/::[0-9]/::64} ${NETIFS[p1]} 2 \ + # "Gateway resolves to wrong nexthop device" + + run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::103 ${V6ADDRS[p7]/::[0-9]/::64} ${NETIFS[p5]} 2 \ + "Gateway resolves to wrong nexthop device - VRF" +} + +run_onlink_tests() +{ + log_section "IPv4 onlink" + log_subsection "Valid onlink commands" + valid_onlink_ipv4 + log_subsection "Invalid onlink commands" + invalid_onlink_ipv4 + + log_section "IPv6 onlink" + log_subsection "Valid onlink commands" + valid_onlink_ipv6 + log_subsection "Invalid onlink commands" + invalid_onlink_ipv6 +} + +################################################################################ +# main + +nsuccess=0 +nfail=0 + +cleanup +setup +run_onlink_tests +cleanup + +if [ "$TESTS" != "none" ]; then + printf "\nTests passed: %3d\n" ${nsuccess} + printf "Tests failed: %3d\n" ${nfail} +fi diff --git a/tools/testing/selftests/net/fib_rule_tests.sh b/tools/testing/selftests/net/fib_rule_tests.sh new file mode 100755 index 000000000..ba2d9fab2 --- /dev/null +++ b/tools/testing/selftests/net/fib_rule_tests.sh @@ -0,0 +1,255 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# This test is for checking IPv4 and IPv6 FIB rules API + +ret=0 + +PAUSE_ON_FAIL=${PAUSE_ON_FAIL:=no} +IP="ip -netns testns" + +RTABLE=100 +GW_IP4=192.51.100.2 +SRC_IP=192.51.100.3 +GW_IP6=2001:db8:1::2 +SRC_IP6=2001:db8:1::3 + +DEV_ADDR=192.51.100.1 +DEV_ADDR6=2001:db8:1::1 +DEV=dummy0 + +log_test() +{ + local rc=$1 + local expected=$2 + local msg="$3" + + if [ ${rc} -eq ${expected} ]; then + nsuccess=$((nsuccess+1)) + printf "\n TEST: %-50s [ OK ]\n" "${msg}" + else + ret=1 + nfail=$((nfail+1)) + printf "\n TEST: %-50s [FAIL]\n" "${msg}" + if [ "${PAUSE_ON_FAIL}" = "yes" ]; then + echo + echo "hit enter to continue, 'q' to quit" + read a + [ "$a" = "q" ] && exit 1 + fi + fi +} + +log_section() +{ + echo + echo "######################################################################" + echo "TEST SECTION: $*" + echo "######################################################################" +} + +setup() +{ + set -e + ip netns add testns + $IP link set dev lo up + + $IP link add dummy0 type dummy + $IP link set dev dummy0 up + $IP address add $DEV_ADDR/24 dev dummy0 + $IP -6 address add $DEV_ADDR6/64 dev dummy0 + + set +e +} + +cleanup() +{ + $IP link del dev dummy0 &> /dev/null + ip netns del testns +} + +fib_check_iproute_support() +{ + ip rule help 2>&1 | grep -q $1 + if [ $? -ne 0 ]; then + echo "SKIP: iproute2 iprule too old, missing $1 match" + return 1 + fi + + ip route get help 2>&1 | grep -q $2 + if [ $? -ne 0 ]; then + echo "SKIP: iproute2 get route too old, missing $2 match" + return 1 + fi + + return 0 +} + +fib_rule6_del() +{ + $IP -6 rule del $1 + log_test $? 0 "rule6 del $1" +} + +fib_rule6_del_by_pref() +{ + pref=$($IP -6 rule show | grep "$1 lookup $TABLE" | cut -d ":" -f 1) + $IP -6 rule del pref $pref +} + +fib_rule6_test_match_n_redirect() +{ + local match="$1" + local getmatch="$2" + + $IP -6 rule add $match table $RTABLE + $IP -6 route get $GW_IP6 $getmatch | grep -q "table $RTABLE" + log_test $? 0 "rule6 check: $1" + + fib_rule6_del_by_pref "$match" + log_test $? 0 "rule6 del by pref: $match" +} + +fib_rule6_test() +{ + # setup the fib rule redirect route + $IP -6 route add table $RTABLE default via $GW_IP6 dev $DEV onlink + + match="oif $DEV" + fib_rule6_test_match_n_redirect "$match" "$match" "oif redirect to table" + + match="from $SRC_IP6 iif $DEV" + fib_rule6_test_match_n_redirect "$match" "$match" "iif redirect to table" + + match="tos 0x10" + fib_rule6_test_match_n_redirect "$match" "$match" "tos redirect to table" + + match="fwmark 0x64" + getmatch="mark 0x64" + fib_rule6_test_match_n_redirect "$match" "$getmatch" "fwmark redirect to table" + + fib_check_iproute_support "uidrange" "uid" + if [ $? -eq 0 ]; then + match="uidrange 100-100" + getmatch="uid 100" + fib_rule6_test_match_n_redirect "$match" "$getmatch" "uid redirect to table" + fi + + fib_check_iproute_support "sport" "sport" + if [ $? -eq 0 ]; then + match="sport 666 dport 777" + fib_rule6_test_match_n_redirect "$match" "$match" "sport and dport redirect to table" + fi + + fib_check_iproute_support "ipproto" "ipproto" + if [ $? -eq 0 ]; then + match="ipproto tcp" + fib_rule6_test_match_n_redirect "$match" "$match" "ipproto match" + fi + + fib_check_iproute_support "ipproto" "ipproto" + if [ $? -eq 0 ]; then + match="ipproto ipv6-icmp" + fib_rule6_test_match_n_redirect "$match" "$match" "ipproto ipv6-icmp match" + fi +} + +fib_rule4_del() +{ + $IP rule del $1 + log_test $? 0 "del $1" +} + +fib_rule4_del_by_pref() +{ + pref=$($IP rule show | grep "$1 lookup $TABLE" | cut -d ":" -f 1) + $IP rule del pref $pref +} + +fib_rule4_test_match_n_redirect() +{ + local match="$1" + local getmatch="$2" + + $IP rule add $match table $RTABLE + $IP route get $GW_IP4 $getmatch | grep -q "table $RTABLE" + log_test $? 0 "rule4 check: $1" + + fib_rule4_del_by_pref "$match" + log_test $? 0 "rule4 del by pref: $match" +} + +fib_rule4_test() +{ + # setup the fib rule redirect route + $IP route add table $RTABLE default via $GW_IP4 dev $DEV onlink + + match="oif $DEV" + fib_rule4_test_match_n_redirect "$match" "$match" "oif redirect to table" + + match="from $SRC_IP iif $DEV" + fib_rule4_test_match_n_redirect "$match" "$match" "iif redirect to table" + + match="tos 0x10" + fib_rule4_test_match_n_redirect "$match" "$match" "tos redirect to table" + + match="fwmark 0x64" + getmatch="mark 0x64" + fib_rule4_test_match_n_redirect "$match" "$getmatch" "fwmark redirect to table" + + fib_check_iproute_support "uidrange" "uid" + if [ $? -eq 0 ]; then + match="uidrange 100-100" + getmatch="uid 100" + fib_rule4_test_match_n_redirect "$match" "$getmatch" "uid redirect to table" + fi + + fib_check_iproute_support "sport" "sport" + if [ $? -eq 0 ]; then + match="sport 666 dport 777" + fib_rule4_test_match_n_redirect "$match" "$match" "sport and dport redirect to table" + fi + + fib_check_iproute_support "ipproto" "ipproto" + if [ $? -eq 0 ]; then + match="ipproto tcp" + fib_rule4_test_match_n_redirect "$match" "$match" "ipproto tcp match" + fi + + fib_check_iproute_support "ipproto" "ipproto" + if [ $? -eq 0 ]; then + match="ipproto icmp" + fib_rule4_test_match_n_redirect "$match" "$match" "ipproto icmp match" + fi +} + +run_fibrule_tests() +{ + log_section "IPv4 fib rule" + fib_rule4_test + log_section "IPv6 fib rule" + fib_rule6_test +} + +if [ "$(id -u)" -ne 0 ];then + echo "SKIP: Need root privileges" + exit 0 +fi + +if [ ! -x "$(command -v ip)" ]; then + echo "SKIP: Could not run test without ip tool" + exit 0 +fi + +# start clean +cleanup &> /dev/null +setup +run_fibrule_tests +cleanup + +if [ "$TESTS" != "none" ]; then + printf "\nTests passed: %3d\n" ${nsuccess} + printf "Tests failed: %3d\n" ${nfail} +fi + +exit $ret diff --git a/tools/testing/selftests/net/fib_tests.sh b/tools/testing/selftests/net/fib_tests.sh new file mode 100755 index 000000000..a5ba14976 --- /dev/null +++ b/tools/testing/selftests/net/fib_tests.sh @@ -0,0 +1,1439 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# This test is for checking IPv4 and IPv6 FIB behavior in response to +# different events. + +ret=0 +# Kselftest framework requirement - SKIP code is 4. +ksft_skip=4 + +# all tests in this script. Can be overridden with -t option +TESTS="unregister down carrier nexthop ipv6_rt ipv4_rt ipv6_addr_metric ipv4_addr_metric" +VERBOSE=0 +PAUSE_ON_FAIL=no +PAUSE=no +IP="ip -netns testns" + +log_test() +{ + local rc=$1 + local expected=$2 + local msg="$3" + + if [ ${rc} -eq ${expected} ]; then + printf " TEST: %-60s [ OK ]\n" "${msg}" + nsuccess=$((nsuccess+1)) + else + ret=1 + nfail=$((nfail+1)) + printf " TEST: %-60s [FAIL]\n" "${msg}" + if [ "${PAUSE_ON_FAIL}" = "yes" ]; then + echo + echo "hit enter to continue, 'q' to quit" + read a + [ "$a" = "q" ] && exit 1 + fi + fi + + if [ "${PAUSE}" = "yes" ]; then + echo + echo "hit enter to continue, 'q' to quit" + read a + [ "$a" = "q" ] && exit 1 + fi +} + +setup() +{ + set -e + ip netns add testns + $IP link set dev lo up + + $IP link add dummy0 type dummy + $IP link set dev dummy0 up + $IP address add 198.51.100.1/24 dev dummy0 + $IP -6 address add 2001:db8:1::1/64 dev dummy0 + set +e + +} + +cleanup() +{ + $IP link del dev dummy0 &> /dev/null + ip netns del testns +} + +get_linklocal() +{ + local dev=$1 + local addr + + addr=$($IP -6 -br addr show dev ${dev} | \ + awk '{ + for (i = 3; i <= NF; ++i) { + if ($i ~ /^fe80/) + print $i + } + }' + ) + addr=${addr/\/*} + + [ -z "$addr" ] && return 1 + + echo $addr + + return 0 +} + +fib_unreg_unicast_test() +{ + echo + echo "Single path route test" + + setup + + echo " Start point" + $IP route get fibmatch 198.51.100.2 &> /dev/null + log_test $? 0 "IPv4 fibmatch" + $IP -6 route get fibmatch 2001:db8:1::2 &> /dev/null + log_test $? 0 "IPv6 fibmatch" + + set -e + $IP link del dev dummy0 + set +e + + echo " Nexthop device deleted" + $IP route get fibmatch 198.51.100.2 &> /dev/null + log_test $? 2 "IPv4 fibmatch - no route" + $IP -6 route get fibmatch 2001:db8:1::2 &> /dev/null + log_test $? 2 "IPv6 fibmatch - no route" + + cleanup +} + +fib_unreg_multipath_test() +{ + + echo + echo "Multipath route test" + + setup + + set -e + $IP link add dummy1 type dummy + $IP link set dev dummy1 up + $IP address add 192.0.2.1/24 dev dummy1 + $IP -6 address add 2001:db8:2::1/64 dev dummy1 + + $IP route add 203.0.113.0/24 \ + nexthop via 198.51.100.2 dev dummy0 \ + nexthop via 192.0.2.2 dev dummy1 + $IP -6 route add 2001:db8:3::/64 \ + nexthop via 2001:db8:1::2 dev dummy0 \ + nexthop via 2001:db8:2::2 dev dummy1 + set +e + + echo " Start point" + $IP route get fibmatch 203.0.113.1 &> /dev/null + log_test $? 0 "IPv4 fibmatch" + $IP -6 route get fibmatch 2001:db8:3::1 &> /dev/null + log_test $? 0 "IPv6 fibmatch" + + set -e + $IP link del dev dummy0 + set +e + + echo " One nexthop device deleted" + $IP route get fibmatch 203.0.113.1 &> /dev/null + log_test $? 2 "IPv4 - multipath route removed on delete" + + $IP -6 route get fibmatch 2001:db8:3::1 &> /dev/null + # In IPv6 we do not flush the entire multipath route. + log_test $? 0 "IPv6 - multipath down to single path" + + set -e + $IP link del dev dummy1 + set +e + + echo " Second nexthop device deleted" + $IP -6 route get fibmatch 2001:db8:3::1 &> /dev/null + log_test $? 2 "IPv6 - no route" + + cleanup +} + +fib_unreg_test() +{ + fib_unreg_unicast_test + fib_unreg_multipath_test +} + +fib_down_unicast_test() +{ + echo + echo "Single path, admin down" + + setup + + echo " Start point" + $IP route get fibmatch 198.51.100.2 &> /dev/null + log_test $? 0 "IPv4 fibmatch" + $IP -6 route get fibmatch 2001:db8:1::2 &> /dev/null + log_test $? 0 "IPv6 fibmatch" + + set -e + $IP link set dev dummy0 down + set +e + + echo " Route deleted on down" + $IP route get fibmatch 198.51.100.2 &> /dev/null + log_test $? 2 "IPv4 fibmatch" + $IP -6 route get fibmatch 2001:db8:1::2 &> /dev/null + log_test $? 2 "IPv6 fibmatch" + + cleanup +} + +fib_down_multipath_test_do() +{ + local down_dev=$1 + local up_dev=$2 + + $IP route get fibmatch 203.0.113.1 \ + oif $down_dev &> /dev/null + log_test $? 2 "IPv4 fibmatch on down device" + $IP -6 route get fibmatch 2001:db8:3::1 \ + oif $down_dev &> /dev/null + log_test $? 2 "IPv6 fibmatch on down device" + + $IP route get fibmatch 203.0.113.1 \ + oif $up_dev &> /dev/null + log_test $? 0 "IPv4 fibmatch on up device" + $IP -6 route get fibmatch 2001:db8:3::1 \ + oif $up_dev &> /dev/null + log_test $? 0 "IPv6 fibmatch on up device" + + $IP route get fibmatch 203.0.113.1 | \ + grep $down_dev | grep -q "dead linkdown" + log_test $? 0 "IPv4 flags on down device" + $IP -6 route get fibmatch 2001:db8:3::1 | \ + grep $down_dev | grep -q "dead linkdown" + log_test $? 0 "IPv6 flags on down device" + + $IP route get fibmatch 203.0.113.1 | \ + grep $up_dev | grep -q "dead linkdown" + log_test $? 1 "IPv4 flags on up device" + $IP -6 route get fibmatch 2001:db8:3::1 | \ + grep $up_dev | grep -q "dead linkdown" + log_test $? 1 "IPv6 flags on up device" +} + +fib_down_multipath_test() +{ + echo + echo "Admin down multipath" + + setup + + set -e + $IP link add dummy1 type dummy + $IP link set dev dummy1 up + + $IP address add 192.0.2.1/24 dev dummy1 + $IP -6 address add 2001:db8:2::1/64 dev dummy1 + + $IP route add 203.0.113.0/24 \ + nexthop via 198.51.100.2 dev dummy0 \ + nexthop via 192.0.2.2 dev dummy1 + $IP -6 route add 2001:db8:3::/64 \ + nexthop via 2001:db8:1::2 dev dummy0 \ + nexthop via 2001:db8:2::2 dev dummy1 + set +e + + echo " Verify start point" + $IP route get fibmatch 203.0.113.1 &> /dev/null + log_test $? 0 "IPv4 fibmatch" + + $IP -6 route get fibmatch 2001:db8:3::1 &> /dev/null + log_test $? 0 "IPv6 fibmatch" + + set -e + $IP link set dev dummy0 down + set +e + + echo " One device down, one up" + fib_down_multipath_test_do "dummy0" "dummy1" + + set -e + $IP link set dev dummy0 up + $IP link set dev dummy1 down + set +e + + echo " Other device down and up" + fib_down_multipath_test_do "dummy1" "dummy0" + + set -e + $IP link set dev dummy0 down + set +e + + echo " Both devices down" + $IP route get fibmatch 203.0.113.1 &> /dev/null + log_test $? 2 "IPv4 fibmatch" + $IP -6 route get fibmatch 2001:db8:3::1 &> /dev/null + log_test $? 2 "IPv6 fibmatch" + + $IP link del dev dummy1 + cleanup +} + +fib_down_test() +{ + fib_down_unicast_test + fib_down_multipath_test +} + +# Local routes should not be affected when carrier changes. +fib_carrier_local_test() +{ + echo + echo "Local carrier tests - single path" + + setup + + set -e + $IP link set dev dummy0 carrier on + set +e + + echo " Start point" + $IP route get fibmatch 198.51.100.1 &> /dev/null + log_test $? 0 "IPv4 fibmatch" + $IP -6 route get fibmatch 2001:db8:1::1 &> /dev/null + log_test $? 0 "IPv6 fibmatch" + + $IP route get fibmatch 198.51.100.1 | \ + grep -q "linkdown" + log_test $? 1 "IPv4 - no linkdown flag" + $IP -6 route get fibmatch 2001:db8:1::1 | \ + grep -q "linkdown" + log_test $? 1 "IPv6 - no linkdown flag" + + set -e + $IP link set dev dummy0 carrier off + sleep 1 + set +e + + echo " Carrier off on nexthop" + $IP route get fibmatch 198.51.100.1 &> /dev/null + log_test $? 0 "IPv4 fibmatch" + $IP -6 route get fibmatch 2001:db8:1::1 &> /dev/null + log_test $? 0 "IPv6 fibmatch" + + $IP route get fibmatch 198.51.100.1 | \ + grep -q "linkdown" + log_test $? 1 "IPv4 - linkdown flag set" + $IP -6 route get fibmatch 2001:db8:1::1 | \ + grep -q "linkdown" + log_test $? 1 "IPv6 - linkdown flag set" + + set -e + $IP address add 192.0.2.1/24 dev dummy0 + $IP -6 address add 2001:db8:2::1/64 dev dummy0 + set +e + + echo " Route to local address with carrier down" + $IP route get fibmatch 192.0.2.1 &> /dev/null + log_test $? 0 "IPv4 fibmatch" + $IP -6 route get fibmatch 2001:db8:2::1 &> /dev/null + log_test $? 0 "IPv6 fibmatch" + + $IP route get fibmatch 192.0.2.1 | \ + grep -q "linkdown" + log_test $? 1 "IPv4 linkdown flag set" + $IP -6 route get fibmatch 2001:db8:2::1 | \ + grep -q "linkdown" + log_test $? 1 "IPv6 linkdown flag set" + + cleanup +} + +fib_carrier_unicast_test() +{ + ret=0 + + echo + echo "Single path route carrier test" + + setup + + set -e + $IP link set dev dummy0 carrier on + set +e + + echo " Start point" + $IP route get fibmatch 198.51.100.2 &> /dev/null + log_test $? 0 "IPv4 fibmatch" + $IP -6 route get fibmatch 2001:db8:1::2 &> /dev/null + log_test $? 0 "IPv6 fibmatch" + + $IP route get fibmatch 198.51.100.2 | \ + grep -q "linkdown" + log_test $? 1 "IPv4 no linkdown flag" + $IP -6 route get fibmatch 2001:db8:1::2 | \ + grep -q "linkdown" + log_test $? 1 "IPv6 no linkdown flag" + + set -e + $IP link set dev dummy0 carrier off + sleep 1 + set +e + + echo " Carrier down" + $IP route get fibmatch 198.51.100.2 &> /dev/null + log_test $? 0 "IPv4 fibmatch" + $IP -6 route get fibmatch 2001:db8:1::2 &> /dev/null + log_test $? 0 "IPv6 fibmatch" + + $IP route get fibmatch 198.51.100.2 | \ + grep -q "linkdown" + log_test $? 0 "IPv4 linkdown flag set" + $IP -6 route get fibmatch 2001:db8:1::2 | \ + grep -q "linkdown" + log_test $? 0 "IPv6 linkdown flag set" + + set -e + $IP address add 192.0.2.1/24 dev dummy0 + $IP -6 address add 2001:db8:2::1/64 dev dummy0 + set +e + + echo " Second address added with carrier down" + $IP route get fibmatch 192.0.2.2 &> /dev/null + log_test $? 0 "IPv4 fibmatch" + $IP -6 route get fibmatch 2001:db8:2::2 &> /dev/null + log_test $? 0 "IPv6 fibmatch" + + $IP route get fibmatch 192.0.2.2 | \ + grep -q "linkdown" + log_test $? 0 "IPv4 linkdown flag set" + $IP -6 route get fibmatch 2001:db8:2::2 | \ + grep -q "linkdown" + log_test $? 0 "IPv6 linkdown flag set" + + cleanup +} + +fib_carrier_test() +{ + fib_carrier_local_test + fib_carrier_unicast_test +} + +################################################################################ +# Tests on nexthop spec + +# run 'ip route add' with given spec +add_rt() +{ + local desc="$1" + local erc=$2 + local vrf=$3 + local pfx=$4 + local gw=$5 + local dev=$6 + local cmd out rc + + [ "$vrf" = "-" ] && vrf="default" + [ -n "$gw" ] && gw="via $gw" + [ -n "$dev" ] && dev="dev $dev" + + cmd="$IP route add vrf $vrf $pfx $gw $dev" + if [ "$VERBOSE" = "1" ]; then + printf "\n COMMAND: $cmd\n" + fi + + out=$(eval $cmd 2>&1) + rc=$? + if [ "$VERBOSE" = "1" -a -n "$out" ]; then + echo " $out" + fi + log_test $rc $erc "$desc" +} + +fib4_nexthop() +{ + echo + echo "IPv4 nexthop tests" + + echo "<<< write me >>>" +} + +fib6_nexthop() +{ + local lldummy=$(get_linklocal dummy0) + local llv1=$(get_linklocal dummy0) + + if [ -z "$lldummy" ]; then + echo "Failed to get linklocal address for dummy0" + return 1 + fi + if [ -z "$llv1" ]; then + echo "Failed to get linklocal address for veth1" + return 1 + fi + + echo + echo "IPv6 nexthop tests" + + add_rt "Directly connected nexthop, unicast address" 0 \ + - 2001:db8:101::/64 2001:db8:1::2 + add_rt "Directly connected nexthop, unicast address with device" 0 \ + - 2001:db8:102::/64 2001:db8:1::2 "dummy0" + add_rt "Gateway is linklocal address" 0 \ + - 2001:db8:103::1/64 $llv1 "veth0" + + # fails because LL address requires a device + add_rt "Gateway is linklocal address, no device" 2 \ + - 2001:db8:104::1/64 $llv1 + + # local address can not be a gateway + add_rt "Gateway can not be local unicast address" 2 \ + - 2001:db8:105::/64 2001:db8:1::1 + add_rt "Gateway can not be local unicast address, with device" 2 \ + - 2001:db8:106::/64 2001:db8:1::1 "dummy0" + add_rt "Gateway can not be a local linklocal address" 2 \ + - 2001:db8:107::1/64 $lldummy "dummy0" + + # VRF tests + add_rt "Gateway can be local address in a VRF" 0 \ + - 2001:db8:108::/64 2001:db8:51::2 + add_rt "Gateway can be local address in a VRF, with device" 0 \ + - 2001:db8:109::/64 2001:db8:51::2 "veth0" + add_rt "Gateway can be local linklocal address in a VRF" 0 \ + - 2001:db8:110::1/64 $llv1 "veth0" + + add_rt "Redirect to VRF lookup" 0 \ + - 2001:db8:111::/64 "" "red" + + add_rt "VRF route, gateway can be local address in default VRF" 0 \ + red 2001:db8:112::/64 2001:db8:51::1 + + # local address in same VRF fails + add_rt "VRF route, gateway can not be a local address" 2 \ + red 2001:db8:113::1/64 2001:db8:2::1 + add_rt "VRF route, gateway can not be a local addr with device" 2 \ + red 2001:db8:114::1/64 2001:db8:2::1 "dummy1" +} + +# Default VRF: +# dummy0 - 198.51.100.1/24 2001:db8:1::1/64 +# veth0 - 192.0.2.1/24 2001:db8:51::1/64 +# +# VRF red: +# dummy1 - 192.168.2.1/24 2001:db8:2::1/64 +# veth1 - 192.0.2.2/24 2001:db8:51::2/64 +# +# [ dummy0 veth0 ]--[ veth1 dummy1 ] + +fib_nexthop_test() +{ + setup + + set -e + + $IP -4 rule add pref 32765 table local + $IP -4 rule del pref 0 + $IP -6 rule add pref 32765 table local + $IP -6 rule del pref 0 + + $IP link add red type vrf table 1 + $IP link set red up + $IP -4 route add vrf red unreachable default metric 4278198272 + $IP -6 route add vrf red unreachable default metric 4278198272 + + $IP link add veth0 type veth peer name veth1 + $IP link set dev veth0 up + $IP address add 192.0.2.1/24 dev veth0 + $IP -6 address add 2001:db8:51::1/64 dev veth0 + + $IP link set dev veth1 vrf red up + $IP address add 192.0.2.2/24 dev veth1 + $IP -6 address add 2001:db8:51::2/64 dev veth1 + + $IP link add dummy1 type dummy + $IP link set dev dummy1 vrf red up + $IP address add 192.168.2.1/24 dev dummy1 + $IP -6 address add 2001:db8:2::1/64 dev dummy1 + set +e + + sleep 1 + fib4_nexthop + fib6_nexthop + + ( + $IP link del dev dummy1 + $IP link del veth0 + $IP link del red + ) 2>/dev/null + cleanup +} + +################################################################################ +# Tests on route add and replace + +run_cmd() +{ + local cmd="$1" + local out + local stderr="2>/dev/null" + + if [ "$VERBOSE" = "1" ]; then + printf " COMMAND: $cmd\n" + stderr= + fi + + out=$(eval $cmd $stderr) + rc=$? + if [ "$VERBOSE" = "1" -a -n "$out" ]; then + echo " $out" + fi + + [ "$VERBOSE" = "1" ] && echo + + return $rc +} + +check_expected() +{ + local out="$1" + local expected="$2" + local rc=0 + + [ "${out}" = "${expected}" ] && return 0 + + if [ -z "${out}" ]; then + if [ "$VERBOSE" = "1" ]; then + printf "\nNo route entry found\n" + printf "Expected:\n" + printf " ${expected}\n" + fi + return 1 + fi + + # tricky way to convert output to 1-line without ip's + # messy '\'; this drops all extra white space + out=$(echo ${out}) + if [ "${out}" != "${expected}" ]; then + rc=1 + if [ "${VERBOSE}" = "1" ]; then + printf " Unexpected route entry. Have:\n" + printf " ${out}\n" + printf " Expected:\n" + printf " ${expected}\n\n" + fi + fi + + return $rc +} + +# add route for a prefix, flushing any existing routes first +# expected to be the first step of a test +add_route6() +{ + local pfx="$1" + local nh="$2" + local out + + if [ "$VERBOSE" = "1" ]; then + echo + echo " ##################################################" + echo + fi + + run_cmd "$IP -6 ro flush ${pfx}" + [ $? -ne 0 ] && exit 1 + + out=$($IP -6 ro ls match ${pfx}) + if [ -n "$out" ]; then + echo "Failed to flush routes for prefix used for tests." + exit 1 + fi + + run_cmd "$IP -6 ro add ${pfx} ${nh}" + if [ $? -ne 0 ]; then + echo "Failed to add initial route for test." + exit 1 + fi +} + +# add initial route - used in replace route tests +add_initial_route6() +{ + add_route6 "2001:db8:104::/64" "$1" +} + +check_route6() +{ + local pfx="2001:db8:104::/64" + local expected="$1" + local out + local rc=0 + + out=$($IP -6 ro ls match ${pfx} | sed -e 's/ pref medium//') + check_expected "${out}" "${expected}" +} + +route_cleanup() +{ + $IP li del red 2>/dev/null + $IP li del dummy1 2>/dev/null + $IP li del veth1 2>/dev/null + $IP li del veth3 2>/dev/null + + cleanup &> /dev/null +} + +route_setup() +{ + route_cleanup + setup + + [ "${VERBOSE}" = "1" ] && set -x + set -e + + $IP li add red up type vrf table 101 + $IP li add veth1 type veth peer name veth2 + $IP li add veth3 type veth peer name veth4 + + $IP li set veth1 up + $IP li set veth3 up + $IP li set veth2 vrf red up + $IP li set veth4 vrf red up + $IP li add dummy1 type dummy + $IP li set dummy1 vrf red up + + $IP -6 addr add 2001:db8:101::1/64 dev veth1 + $IP -6 addr add 2001:db8:101::2/64 dev veth2 + $IP -6 addr add 2001:db8:103::1/64 dev veth3 + $IP -6 addr add 2001:db8:103::2/64 dev veth4 + $IP -6 addr add 2001:db8:104::1/64 dev dummy1 + + $IP addr add 172.16.101.1/24 dev veth1 + $IP addr add 172.16.101.2/24 dev veth2 + $IP addr add 172.16.103.1/24 dev veth3 + $IP addr add 172.16.103.2/24 dev veth4 + $IP addr add 172.16.104.1/24 dev dummy1 + + set +e +} + +# assumption is that basic add of a single path route works +# otherwise just adding an address on an interface is broken +ipv6_rt_add() +{ + local rc + + echo + echo "IPv6 route add / append tests" + + # route add same prefix - fails with EEXISTS b/c ip adds NLM_F_EXCL + add_route6 "2001:db8:104::/64" "via 2001:db8:101::2" + run_cmd "$IP -6 ro add 2001:db8:104::/64 via 2001:db8:103::2" + log_test $? 2 "Attempt to add duplicate route - gw" + + # route add same prefix - fails with EEXISTS b/c ip adds NLM_F_EXCL + add_route6 "2001:db8:104::/64" "via 2001:db8:101::2" + run_cmd "$IP -6 ro add 2001:db8:104::/64 dev veth3" + log_test $? 2 "Attempt to add duplicate route - dev only" + + # route add same prefix - fails with EEXISTS b/c ip adds NLM_F_EXCL + add_route6 "2001:db8:104::/64" "via 2001:db8:101::2" + run_cmd "$IP -6 ro add unreachable 2001:db8:104::/64" + log_test $? 2 "Attempt to add duplicate route - reject route" + + # route append with same prefix adds a new route + # - iproute2 sets NLM_F_CREATE | NLM_F_APPEND + add_route6 "2001:db8:104::/64" "via 2001:db8:101::2" + run_cmd "$IP -6 ro append 2001:db8:104::/64 via 2001:db8:103::2" + check_route6 "2001:db8:104::/64 metric 1024 nexthop via 2001:db8:101::2 dev veth1 weight 1 nexthop via 2001:db8:103::2 dev veth3 weight 1" + log_test $? 0 "Append nexthop to existing route - gw" + + # insert mpath directly + add_route6 "2001:db8:104::/64" "nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" + check_route6 "2001:db8:104::/64 metric 1024 nexthop via 2001:db8:101::2 dev veth1 weight 1 nexthop via 2001:db8:103::2 dev veth3 weight 1" + log_test $? 0 "Add multipath route" + + add_route6 "2001:db8:104::/64" "nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" + run_cmd "$IP -6 ro add 2001:db8:104::/64 nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" + log_test $? 2 "Attempt to add duplicate multipath route" + + # insert of a second route without append but different metric + add_route6 "2001:db8:104::/64" "via 2001:db8:101::2" + run_cmd "$IP -6 ro add 2001:db8:104::/64 via 2001:db8:103::2 metric 512" + rc=$? + if [ $rc -eq 0 ]; then + run_cmd "$IP -6 ro add 2001:db8:104::/64 via 2001:db8:103::3 metric 256" + rc=$? + fi + log_test $rc 0 "Route add with different metrics" + + run_cmd "$IP -6 ro del 2001:db8:104::/64 metric 512" + rc=$? + if [ $rc -eq 0 ]; then + check_route6 "2001:db8:104::/64 via 2001:db8:103::3 dev veth3 metric 256 2001:db8:104::/64 via 2001:db8:101::2 dev veth1 metric 1024" + rc=$? + fi + log_test $rc 0 "Route delete with metric" +} + +ipv6_rt_replace_single() +{ + # single path with single path + # + add_initial_route6 "via 2001:db8:101::2" + run_cmd "$IP -6 ro replace 2001:db8:104::/64 via 2001:db8:103::2" + check_route6 "2001:db8:104::/64 via 2001:db8:103::2 dev veth3 metric 1024" + log_test $? 0 "Single path with single path" + + # single path with multipath + # + add_initial_route6 "nexthop via 2001:db8:101::2" + run_cmd "$IP -6 ro replace 2001:db8:104::/64 nexthop via 2001:db8:101::3 nexthop via 2001:db8:103::2" + check_route6 "2001:db8:104::/64 metric 1024 nexthop via 2001:db8:101::3 dev veth1 weight 1 nexthop via 2001:db8:103::2 dev veth3 weight 1" + log_test $? 0 "Single path with multipath" + + # single path with single path using MULTIPATH attribute + # + add_initial_route6 "via 2001:db8:101::2" + run_cmd "$IP -6 ro replace 2001:db8:104::/64 nexthop via 2001:db8:103::2" + check_route6 "2001:db8:104::/64 via 2001:db8:103::2 dev veth3 metric 1024" + log_test $? 0 "Single path with single path via multipath attribute" + + # route replace fails - invalid nexthop + add_initial_route6 "via 2001:db8:101::2" + run_cmd "$IP -6 ro replace 2001:db8:104::/64 via 2001:db8:104::2" + if [ $? -eq 0 ]; then + # previous command is expected to fail so if it returns 0 + # that means the test failed. + log_test 0 1 "Invalid nexthop" + else + check_route6 "2001:db8:104::/64 via 2001:db8:101::2 dev veth1 metric 1024" + log_test $? 0 "Invalid nexthop" + fi + + # replace non-existent route + # - note use of change versus replace since ip adds NLM_F_CREATE + # for replace + add_initial_route6 "via 2001:db8:101::2" + run_cmd "$IP -6 ro change 2001:db8:105::/64 via 2001:db8:101::2" + log_test $? 2 "Single path - replace of non-existent route" +} + +ipv6_rt_replace_mpath() +{ + # multipath with multipath + add_initial_route6 "nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" + run_cmd "$IP -6 ro replace 2001:db8:104::/64 nexthop via 2001:db8:101::3 nexthop via 2001:db8:103::3" + check_route6 "2001:db8:104::/64 metric 1024 nexthop via 2001:db8:101::3 dev veth1 weight 1 nexthop via 2001:db8:103::3 dev veth3 weight 1" + log_test $? 0 "Multipath with multipath" + + # multipath with single + add_initial_route6 "nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" + run_cmd "$IP -6 ro replace 2001:db8:104::/64 via 2001:db8:101::3" + check_route6 "2001:db8:104::/64 via 2001:db8:101::3 dev veth1 metric 1024" + log_test $? 0 "Multipath with single path" + + # multipath with single + add_initial_route6 "nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" + run_cmd "$IP -6 ro replace 2001:db8:104::/64 nexthop via 2001:db8:101::3" + check_route6 "2001:db8:104::/64 via 2001:db8:101::3 dev veth1 metric 1024" + log_test $? 0 "Multipath with single path via multipath attribute" + + # multipath with dev-only + add_initial_route6 "nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" + run_cmd "$IP -6 ro replace 2001:db8:104::/64 dev veth1" + check_route6 "2001:db8:104::/64 dev veth1 metric 1024" + log_test $? 0 "Multipath with dev-only" + + # route replace fails - invalid nexthop 1 + add_initial_route6 "nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" + run_cmd "$IP -6 ro replace 2001:db8:104::/64 nexthop via 2001:db8:111::3 nexthop via 2001:db8:103::3" + check_route6 "2001:db8:104::/64 metric 1024 nexthop via 2001:db8:101::2 dev veth1 weight 1 nexthop via 2001:db8:103::2 dev veth3 weight 1" + log_test $? 0 "Multipath - invalid first nexthop" + + # route replace fails - invalid nexthop 2 + add_initial_route6 "nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" + run_cmd "$IP -6 ro replace 2001:db8:104::/64 nexthop via 2001:db8:101::3 nexthop via 2001:db8:113::3" + check_route6 "2001:db8:104::/64 metric 1024 nexthop via 2001:db8:101::2 dev veth1 weight 1 nexthop via 2001:db8:103::2 dev veth3 weight 1" + log_test $? 0 "Multipath - invalid second nexthop" + + # multipath non-existent route + add_initial_route6 "nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" + run_cmd "$IP -6 ro change 2001:db8:105::/64 nexthop via 2001:db8:101::3 nexthop via 2001:db8:103::3" + log_test $? 2 "Multipath - replace of non-existent route" +} + +ipv6_rt_replace() +{ + echo + echo "IPv6 route replace tests" + + ipv6_rt_replace_single + ipv6_rt_replace_mpath +} + +ipv6_route_test() +{ + route_setup + + ipv6_rt_add + ipv6_rt_replace + + route_cleanup +} + +ip_addr_metric_check() +{ + ip addr help 2>&1 | grep -q metric + if [ $? -ne 0 ]; then + echo "iproute2 command does not support metric for addresses. Skipping test" + return 1 + fi + + return 0 +} + +ipv6_addr_metric_test() +{ + local rc + + echo + echo "IPv6 prefix route tests" + + ip_addr_metric_check || return 1 + + setup + + set -e + $IP li add dummy1 type dummy + $IP li add dummy2 type dummy + $IP li set dummy1 up + $IP li set dummy2 up + + # default entry is metric 256 + run_cmd "$IP -6 addr add dev dummy1 2001:db8:104::1/64" + run_cmd "$IP -6 addr add dev dummy2 2001:db8:104::2/64" + set +e + + check_route6 "2001:db8:104::/64 dev dummy1 proto kernel metric 256 2001:db8:104::/64 dev dummy2 proto kernel metric 256" + log_test $? 0 "Default metric" + + set -e + run_cmd "$IP -6 addr flush dev dummy1" + run_cmd "$IP -6 addr add dev dummy1 2001:db8:104::1/64 metric 257" + set +e + + check_route6 "2001:db8:104::/64 dev dummy2 proto kernel metric 256 2001:db8:104::/64 dev dummy1 proto kernel metric 257" + log_test $? 0 "User specified metric on first device" + + set -e + run_cmd "$IP -6 addr flush dev dummy2" + run_cmd "$IP -6 addr add dev dummy2 2001:db8:104::2/64 metric 258" + set +e + + check_route6 "2001:db8:104::/64 dev dummy1 proto kernel metric 257 2001:db8:104::/64 dev dummy2 proto kernel metric 258" + log_test $? 0 "User specified metric on second device" + + run_cmd "$IP -6 addr del dev dummy1 2001:db8:104::1/64 metric 257" + rc=$? + if [ $rc -eq 0 ]; then + check_route6 "2001:db8:104::/64 dev dummy2 proto kernel metric 258" + rc=$? + fi + log_test $rc 0 "Delete of address on first device" + + run_cmd "$IP -6 addr change dev dummy2 2001:db8:104::2/64 metric 259" + rc=$? + if [ $rc -eq 0 ]; then + check_route6 "2001:db8:104::/64 dev dummy2 proto kernel metric 259" + rc=$? + fi + log_test $rc 0 "Modify metric of address" + + # verify prefix route removed on down + run_cmd "ip netns exec testns sysctl -qw net.ipv6.conf.all.keep_addr_on_down=1" + run_cmd "$IP li set dev dummy2 down" + rc=$? + if [ $rc -eq 0 ]; then + out=$($IP -6 ro ls match 2001:db8:104::/64) + check_expected "${out}" "" + rc=$? + fi + log_test $rc 0 "Prefix route removed on link down" + + # verify prefix route re-inserted with assigned metric + run_cmd "$IP li set dev dummy2 up" + rc=$? + if [ $rc -eq 0 ]; then + check_route6 "2001:db8:104::/64 dev dummy2 proto kernel metric 259" + rc=$? + fi + log_test $rc 0 "Prefix route with metric on link up" + + # verify peer metric added correctly + set -e + run_cmd "$IP -6 addr flush dev dummy2" + run_cmd "$IP -6 addr add dev dummy2 2001:db8:104::1 peer 2001:db8:104::2 metric 260" + set +e + + check_route6 "2001:db8:104::1 dev dummy2 proto kernel metric 260" + log_test $? 0 "Set metric with peer route on local side" + check_route6 "2001:db8:104::2 dev dummy2 proto kernel metric 260" + log_test $? 0 "Set metric with peer route on peer side" + + set -e + run_cmd "$IP -6 addr change dev dummy2 2001:db8:104::1 peer 2001:db8:104::3 metric 261" + set +e + + check_route6 "2001:db8:104::1 dev dummy2 proto kernel metric 261" + log_test $? 0 "Modify metric and peer address on local side" + check_route6 "2001:db8:104::3 dev dummy2 proto kernel metric 261" + log_test $? 0 "Modify metric and peer address on peer side" + + $IP li del dummy1 + $IP li del dummy2 + cleanup +} + +# add route for a prefix, flushing any existing routes first +# expected to be the first step of a test +add_route() +{ + local pfx="$1" + local nh="$2" + local out + + if [ "$VERBOSE" = "1" ]; then + echo + echo " ##################################################" + echo + fi + + run_cmd "$IP ro flush ${pfx}" + [ $? -ne 0 ] && exit 1 + + out=$($IP ro ls match ${pfx}) + if [ -n "$out" ]; then + echo "Failed to flush routes for prefix used for tests." + exit 1 + fi + + run_cmd "$IP ro add ${pfx} ${nh}" + if [ $? -ne 0 ]; then + echo "Failed to add initial route for test." + exit 1 + fi +} + +# add initial route - used in replace route tests +add_initial_route() +{ + add_route "172.16.104.0/24" "$1" +} + +check_route() +{ + local pfx="172.16.104.0/24" + local expected="$1" + local out + + out=$($IP ro ls match ${pfx}) + check_expected "${out}" "${expected}" +} + +# assumption is that basic add of a single path route works +# otherwise just adding an address on an interface is broken +ipv4_rt_add() +{ + local rc + + echo + echo "IPv4 route add / append tests" + + # route add same prefix - fails with EEXISTS b/c ip adds NLM_F_EXCL + add_route "172.16.104.0/24" "via 172.16.101.2" + run_cmd "$IP ro add 172.16.104.0/24 via 172.16.103.2" + log_test $? 2 "Attempt to add duplicate route - gw" + + # route add same prefix - fails with EEXISTS b/c ip adds NLM_F_EXCL + add_route "172.16.104.0/24" "via 172.16.101.2" + run_cmd "$IP ro add 172.16.104.0/24 dev veth3" + log_test $? 2 "Attempt to add duplicate route - dev only" + + # route add same prefix - fails with EEXISTS b/c ip adds NLM_F_EXCL + add_route "172.16.104.0/24" "via 172.16.101.2" + run_cmd "$IP ro add unreachable 172.16.104.0/24" + log_test $? 2 "Attempt to add duplicate route - reject route" + + # iproute2 prepend only sets NLM_F_CREATE + # - adds a new route; does NOT convert existing route to ECMP + add_route "172.16.104.0/24" "via 172.16.101.2" + run_cmd "$IP ro prepend 172.16.104.0/24 via 172.16.103.2" + check_route "172.16.104.0/24 via 172.16.103.2 dev veth3 172.16.104.0/24 via 172.16.101.2 dev veth1" + log_test $? 0 "Add new nexthop for existing prefix" + + # route append with same prefix adds a new route + # - iproute2 sets NLM_F_CREATE | NLM_F_APPEND + add_route "172.16.104.0/24" "via 172.16.101.2" + run_cmd "$IP ro append 172.16.104.0/24 via 172.16.103.2" + check_route "172.16.104.0/24 via 172.16.101.2 dev veth1 172.16.104.0/24 via 172.16.103.2 dev veth3" + log_test $? 0 "Append nexthop to existing route - gw" + + add_route "172.16.104.0/24" "via 172.16.101.2" + run_cmd "$IP ro append 172.16.104.0/24 dev veth3" + check_route "172.16.104.0/24 via 172.16.101.2 dev veth1 172.16.104.0/24 dev veth3 scope link" + log_test $? 0 "Append nexthop to existing route - dev only" + + add_route "172.16.104.0/24" "via 172.16.101.2" + run_cmd "$IP ro append unreachable 172.16.104.0/24" + check_route "172.16.104.0/24 via 172.16.101.2 dev veth1 unreachable 172.16.104.0/24" + log_test $? 0 "Append nexthop to existing route - reject route" + + run_cmd "$IP ro flush 172.16.104.0/24" + run_cmd "$IP ro add unreachable 172.16.104.0/24" + run_cmd "$IP ro append 172.16.104.0/24 via 172.16.103.2" + check_route "unreachable 172.16.104.0/24 172.16.104.0/24 via 172.16.103.2 dev veth3" + log_test $? 0 "Append nexthop to existing reject route - gw" + + run_cmd "$IP ro flush 172.16.104.0/24" + run_cmd "$IP ro add unreachable 172.16.104.0/24" + run_cmd "$IP ro append 172.16.104.0/24 dev veth3" + check_route "unreachable 172.16.104.0/24 172.16.104.0/24 dev veth3 scope link" + log_test $? 0 "Append nexthop to existing reject route - dev only" + + # insert mpath directly + add_route "172.16.104.0/24" "nexthop via 172.16.101.2 nexthop via 172.16.103.2" + check_route "172.16.104.0/24 nexthop via 172.16.101.2 dev veth1 weight 1 nexthop via 172.16.103.2 dev veth3 weight 1" + log_test $? 0 "add multipath route" + + add_route "172.16.104.0/24" "nexthop via 172.16.101.2 nexthop via 172.16.103.2" + run_cmd "$IP ro add 172.16.104.0/24 nexthop via 172.16.101.2 nexthop via 172.16.103.2" + log_test $? 2 "Attempt to add duplicate multipath route" + + # insert of a second route without append but different metric + add_route "172.16.104.0/24" "via 172.16.101.2" + run_cmd "$IP ro add 172.16.104.0/24 via 172.16.103.2 metric 512" + rc=$? + if [ $rc -eq 0 ]; then + run_cmd "$IP ro add 172.16.104.0/24 via 172.16.103.3 metric 256" + rc=$? + fi + log_test $rc 0 "Route add with different metrics" + + run_cmd "$IP ro del 172.16.104.0/24 metric 512" + rc=$? + if [ $rc -eq 0 ]; then + check_route "172.16.104.0/24 via 172.16.101.2 dev veth1 172.16.104.0/24 via 172.16.103.3 dev veth3 metric 256" + rc=$? + fi + log_test $rc 0 "Route delete with metric" +} + +ipv4_rt_replace_single() +{ + # single path with single path + # + add_initial_route "via 172.16.101.2" + run_cmd "$IP ro replace 172.16.104.0/24 via 172.16.103.2" + check_route "172.16.104.0/24 via 172.16.103.2 dev veth3" + log_test $? 0 "Single path with single path" + + # single path with multipath + # + add_initial_route "nexthop via 172.16.101.2" + run_cmd "$IP ro replace 172.16.104.0/24 nexthop via 172.16.101.3 nexthop via 172.16.103.2" + check_route "172.16.104.0/24 nexthop via 172.16.101.3 dev veth1 weight 1 nexthop via 172.16.103.2 dev veth3 weight 1" + log_test $? 0 "Single path with multipath" + + # single path with reject + # + add_initial_route "nexthop via 172.16.101.2" + run_cmd "$IP ro replace unreachable 172.16.104.0/24" + check_route "unreachable 172.16.104.0/24" + log_test $? 0 "Single path with reject route" + + # single path with single path using MULTIPATH attribute + # + add_initial_route "via 172.16.101.2" + run_cmd "$IP ro replace 172.16.104.0/24 nexthop via 172.16.103.2" + check_route "172.16.104.0/24 via 172.16.103.2 dev veth3" + log_test $? 0 "Single path with single path via multipath attribute" + + # route replace fails - invalid nexthop + add_initial_route "via 172.16.101.2" + run_cmd "$IP ro replace 172.16.104.0/24 via 2001:db8:104::2" + if [ $? -eq 0 ]; then + # previous command is expected to fail so if it returns 0 + # that means the test failed. + log_test 0 1 "Invalid nexthop" + else + check_route "172.16.104.0/24 via 172.16.101.2 dev veth1" + log_test $? 0 "Invalid nexthop" + fi + + # replace non-existent route + # - note use of change versus replace since ip adds NLM_F_CREATE + # for replace + add_initial_route "via 172.16.101.2" + run_cmd "$IP ro change 172.16.105.0/24 via 172.16.101.2" + log_test $? 2 "Single path - replace of non-existent route" +} + +ipv4_rt_replace_mpath() +{ + # multipath with multipath + add_initial_route "nexthop via 172.16.101.2 nexthop via 172.16.103.2" + run_cmd "$IP ro replace 172.16.104.0/24 nexthop via 172.16.101.3 nexthop via 172.16.103.3" + check_route "172.16.104.0/24 nexthop via 172.16.101.3 dev veth1 weight 1 nexthop via 172.16.103.3 dev veth3 weight 1" + log_test $? 0 "Multipath with multipath" + + # multipath with single + add_initial_route "nexthop via 172.16.101.2 nexthop via 172.16.103.2" + run_cmd "$IP ro replace 172.16.104.0/24 via 172.16.101.3" + check_route "172.16.104.0/24 via 172.16.101.3 dev veth1" + log_test $? 0 "Multipath with single path" + + # multipath with single + add_initial_route "nexthop via 172.16.101.2 nexthop via 172.16.103.2" + run_cmd "$IP ro replace 172.16.104.0/24 nexthop via 172.16.101.3" + check_route "172.16.104.0/24 via 172.16.101.3 dev veth1" + log_test $? 0 "Multipath with single path via multipath attribute" + + # multipath with reject + add_initial_route "nexthop via 172.16.101.2 nexthop via 172.16.103.2" + run_cmd "$IP ro replace unreachable 172.16.104.0/24" + check_route "unreachable 172.16.104.0/24" + log_test $? 0 "Multipath with reject route" + + # route replace fails - invalid nexthop 1 + add_initial_route "nexthop via 172.16.101.2 nexthop via 172.16.103.2" + run_cmd "$IP ro replace 172.16.104.0/24 nexthop via 172.16.111.3 nexthop via 172.16.103.3" + check_route "172.16.104.0/24 nexthop via 172.16.101.2 dev veth1 weight 1 nexthop via 172.16.103.2 dev veth3 weight 1" + log_test $? 0 "Multipath - invalid first nexthop" + + # route replace fails - invalid nexthop 2 + add_initial_route "nexthop via 172.16.101.2 nexthop via 172.16.103.2" + run_cmd "$IP ro replace 172.16.104.0/24 nexthop via 172.16.101.3 nexthop via 172.16.113.3" + check_route "172.16.104.0/24 nexthop via 172.16.101.2 dev veth1 weight 1 nexthop via 172.16.103.2 dev veth3 weight 1" + log_test $? 0 "Multipath - invalid second nexthop" + + # multipath non-existent route + add_initial_route "nexthop via 172.16.101.2 nexthop via 172.16.103.2" + run_cmd "$IP ro change 172.16.105.0/24 nexthop via 172.16.101.3 nexthop via 172.16.103.3" + log_test $? 2 "Multipath - replace of non-existent route" +} + +ipv4_rt_replace() +{ + echo + echo "IPv4 route replace tests" + + ipv4_rt_replace_single + ipv4_rt_replace_mpath +} + +ipv4_route_test() +{ + route_setup + + ipv4_rt_add + ipv4_rt_replace + + route_cleanup +} + +ipv4_addr_metric_test() +{ + local rc + + echo + echo "IPv4 prefix route tests" + + ip_addr_metric_check || return 1 + + setup + + set -e + $IP li add dummy1 type dummy + $IP li add dummy2 type dummy + $IP li set dummy1 up + $IP li set dummy2 up + + # default entry is metric 256 + run_cmd "$IP addr add dev dummy1 172.16.104.1/24" + run_cmd "$IP addr add dev dummy2 172.16.104.2/24" + set +e + + check_route "172.16.104.0/24 dev dummy1 proto kernel scope link src 172.16.104.1 172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.2" + log_test $? 0 "Default metric" + + set -e + run_cmd "$IP addr flush dev dummy1" + run_cmd "$IP addr add dev dummy1 172.16.104.1/24 metric 257" + set +e + + check_route "172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.2 172.16.104.0/24 dev dummy1 proto kernel scope link src 172.16.104.1 metric 257" + log_test $? 0 "User specified metric on first device" + + set -e + run_cmd "$IP addr flush dev dummy2" + run_cmd "$IP addr add dev dummy2 172.16.104.2/24 metric 258" + set +e + + check_route "172.16.104.0/24 dev dummy1 proto kernel scope link src 172.16.104.1 metric 257 172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.2 metric 258" + log_test $? 0 "User specified metric on second device" + + run_cmd "$IP addr del dev dummy1 172.16.104.1/24 metric 257" + rc=$? + if [ $rc -eq 0 ]; then + check_route "172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.2 metric 258" + rc=$? + fi + log_test $rc 0 "Delete of address on first device" + + run_cmd "$IP addr change dev dummy2 172.16.104.2/24 metric 259" + rc=$? + if [ $rc -eq 0 ]; then + check_route "172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.2 metric 259" + rc=$? + fi + log_test $rc 0 "Modify metric of address" + + # verify prefix route removed on down + run_cmd "$IP li set dev dummy2 down" + rc=$? + if [ $rc -eq 0 ]; then + out=$($IP ro ls match 172.16.104.0/24) + check_expected "${out}" "" + rc=$? + fi + log_test $rc 0 "Prefix route removed on link down" + + # verify prefix route re-inserted with assigned metric + run_cmd "$IP li set dev dummy2 up" + rc=$? + if [ $rc -eq 0 ]; then + check_route "172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.2 metric 259" + rc=$? + fi + log_test $rc 0 "Prefix route with metric on link up" + + # explicitly check for metric changes on edge scenarios + run_cmd "$IP addr flush dev dummy2" + run_cmd "$IP addr add dev dummy2 172.16.104.0/24 metric 259" + run_cmd "$IP addr change dev dummy2 172.16.104.0/24 metric 260" + rc=$? + if [ $rc -eq 0 ]; then + check_route "172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.0 metric 260" + rc=$? + fi + log_test $rc 0 "Modify metric of .0/24 address" + + run_cmd "$IP addr flush dev dummy2" + run_cmd "$IP addr add dev dummy2 172.16.104.1/32 peer 172.16.104.2 metric 260" + rc=$? + if [ $rc -eq 0 ]; then + check_route "172.16.104.2 dev dummy2 proto kernel scope link src 172.16.104.1 metric 260" + rc=$? + fi + log_test $rc 0 "Set metric of address with peer route" + + run_cmd "$IP addr change dev dummy2 172.16.104.1/32 peer 172.16.104.3 metric 261" + rc=$? + if [ $rc -eq 0 ]; then + check_route "172.16.104.3 dev dummy2 proto kernel scope link src 172.16.104.1 metric 261" + rc=$? + fi + log_test $rc 0 "Modify metric and peer address for peer route" + + $IP li del dummy1 + $IP li del dummy2 + cleanup +} + +################################################################################ +# usage + +usage() +{ + cat <<EOF +usage: ${0##*/} OPTS + + -t <test> Test(s) to run (default: all) + (options: $TESTS) + -p Pause on fail + -P Pause after each test before cleanup + -v verbose mode (show commands and output) +EOF +} + +################################################################################ +# main + +while getopts :t:pPhv o +do + case $o in + t) TESTS=$OPTARG;; + p) PAUSE_ON_FAIL=yes;; + P) PAUSE=yes;; + v) VERBOSE=$(($VERBOSE + 1));; + h) usage; exit 0;; + *) usage; exit 1;; + esac +done + +PEER_CMD="ip netns exec ${PEER_NS}" + +# make sure we don't pause twice +[ "${PAUSE}" = "yes" ] && PAUSE_ON_FAIL=no + +if [ "$(id -u)" -ne 0 ];then + echo "SKIP: Need root privileges" + exit $ksft_skip; +fi + +if [ ! -x "$(command -v ip)" ]; then + echo "SKIP: Could not run test without ip tool" + exit $ksft_skip +fi + +ip route help 2>&1 | grep -q fibmatch +if [ $? -ne 0 ]; then + echo "SKIP: iproute2 too old, missing fibmatch" + exit $ksft_skip +fi + +# start clean +cleanup &> /dev/null + +for t in $TESTS +do + case $t in + fib_unreg_test|unregister) fib_unreg_test;; + fib_down_test|down) fib_down_test;; + fib_carrier_test|carrier) fib_carrier_test;; + fib_nexthop_test|nexthop) fib_nexthop_test;; + ipv6_route_test|ipv6_rt) ipv6_route_test;; + ipv4_route_test|ipv4_rt) ipv4_route_test;; + ipv6_addr_metric) ipv6_addr_metric_test;; + ipv4_addr_metric) ipv4_addr_metric_test;; + + help) echo "Test names: $TESTS"; exit 0;; + esac +done + +if [ "$TESTS" != "none" ]; then + printf "\nTests passed: %3d\n" ${nsuccess} + printf "Tests failed: %3d\n" ${nfail} +fi + +exit $ret diff --git a/tools/testing/selftests/net/forwarding/.gitignore b/tools/testing/selftests/net/forwarding/.gitignore new file mode 100644 index 000000000..a793eef5b --- /dev/null +++ b/tools/testing/selftests/net/forwarding/.gitignore @@ -0,0 +1 @@ +forwarding.config diff --git a/tools/testing/selftests/net/forwarding/README b/tools/testing/selftests/net/forwarding/README new file mode 100644 index 000000000..b8a2af8fc --- /dev/null +++ b/tools/testing/selftests/net/forwarding/README @@ -0,0 +1,58 @@ +Motivation +========== + +One of the nice things about network namespaces is that they allow one +to easily create and test complex environments. + +Unfortunately, these namespaces can not be used with actual switching +ASICs, as their ports can not be migrated to other network namespaces +(NETIF_F_NETNS_LOCAL) and most of them probably do not support the +L1-separation provided by namespaces. + +However, a similar kind of flexibility can be achieved by using VRFs and +by looping the switch ports together. For example: + + br0 + + + vrf-h1 | vrf-h2 + + +---+----+ + + | | | | + 192.0.2.1/24 + + + + 192.0.2.2/24 + swp1 swp2 swp3 swp4 + + + + + + | | | | + +--------+ +--------+ + +The VRFs act as lightweight namespaces representing hosts connected to +the switch. + +This approach for testing switch ASICs has several advantages over the +traditional method that requires multiple physical machines, to name a +few: + +1. Only the device under test (DUT) is being tested without noise from +other system. + +2. Ability to easily provision complex topologies. Testing bridging +between 4-ports LAGs or 8-way ECMP requires many physical links that are +not always available. With the VRF-based approach one merely needs to +loopback more ports. + +These tests are written with switch ASICs in mind, but they can be run +on any Linux box using veth pairs to emulate physical loopbacks. + +Guidelines for Writing Tests +============================ + +o Where possible, reuse an existing topology for different tests instead + of recreating the same topology. +o Tests that use anything but the most trivial topologies should include + an ASCII art showing the topology. +o Where possible, IPv6 and IPv4 addresses shall conform to RFC 3849 and + RFC 5737, respectively. +o Where possible, tests shall be written so that they can be reused by + multiple topologies and added to lib.sh. +o Checks shall be added to lib.sh for any external dependencies. +o Code shall be checked using ShellCheck [1] prior to submission. + +1. https://www.shellcheck.net/ diff --git a/tools/testing/selftests/net/forwarding/bridge_port_isolation.sh b/tools/testing/selftests/net/forwarding/bridge_port_isolation.sh new file mode 100755 index 000000000..a43b4645c --- /dev/null +++ b/tools/testing/selftests/net/forwarding/bridge_port_isolation.sh @@ -0,0 +1,151 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +ALL_TESTS="ping_ipv4 ping_ipv6 flooding" +NUM_NETIFS=6 +CHECK_TC="yes" +source lib.sh + +h1_create() +{ + simple_if_init $h1 192.0.2.1/24 2001:db8:1::1/64 +} + +h1_destroy() +{ + simple_if_fini $h1 192.0.2.1/24 2001:db8:1::1/64 +} + +h2_create() +{ + simple_if_init $h2 192.0.2.2/24 2001:db8:1::2/64 +} + +h2_destroy() +{ + simple_if_fini $h2 192.0.2.2/24 2001:db8:1::2/64 +} + +h3_create() +{ + simple_if_init $h3 192.0.2.3/24 2001:db8:1::3/64 +} + +h3_destroy() +{ + simple_if_fini $h3 192.0.2.3/24 2001:db8:1::3/64 +} + +switch_create() +{ + ip link add dev br0 type bridge + + ip link set dev $swp1 master br0 + ip link set dev $swp2 master br0 + ip link set dev $swp3 master br0 + + ip link set dev $swp1 type bridge_slave isolated on + check_err $? "Can't set isolation on port $swp1" + ip link set dev $swp2 type bridge_slave isolated on + check_err $? "Can't set isolation on port $swp2" + ip link set dev $swp3 type bridge_slave isolated off + check_err $? "Can't disable isolation on port $swp3" + + ip link set dev br0 up + ip link set dev $swp1 up + ip link set dev $swp2 up + ip link set dev $swp3 up +} + +switch_destroy() +{ + ip link set dev $swp3 down + ip link set dev $swp2 down + ip link set dev $swp1 down + + ip link del dev br0 +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + swp3=${NETIFS[p5]} + h3=${NETIFS[p6]} + + vrf_prepare + + h1_create + h2_create + h3_create + + switch_create +} + +cleanup() +{ + pre_cleanup + + switch_destroy + + h3_destroy + h2_destroy + h1_destroy + + vrf_cleanup +} + +ping_ipv4() +{ + RET=0 + ping_do $h1 192.0.2.2 + check_fail $? "Ping worked when it should not have" + + RET=0 + ping_do $h3 192.0.2.2 + check_err $? "Ping didn't work when it should have" + + log_test "Isolated port ping" +} + +ping_ipv6() +{ + RET=0 + ping6_do $h1 2001:db8:1::2 + check_fail $? "Ping6 worked when it should not have" + + RET=0 + ping6_do $h3 2001:db8:1::2 + check_err $? "Ping6 didn't work when it should have" + + log_test "Isolated port ping6" +} + +flooding() +{ + local mac=de:ad:be:ef:13:37 + local ip=192.0.2.100 + + RET=0 + flood_test_do false $mac $ip $h1 $h2 + check_err $? "Packet was flooded when it should not have been" + + RET=0 + flood_test_do true $mac $ip $h3 $h2 + check_err $? "Packet was not flooded when it should have been" + + log_test "Isolated port flooding" +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tests_run + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/bridge_vlan_aware.sh b/tools/testing/selftests/net/forwarding/bridge_vlan_aware.sh new file mode 100755 index 000000000..b90dff8d3 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/bridge_vlan_aware.sh @@ -0,0 +1,151 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +ALL_TESTS="ping_ipv4 ping_ipv6 learning flooding vlan_deletion extern_learn" +NUM_NETIFS=4 +CHECK_TC="yes" +source lib.sh + +h1_create() +{ + simple_if_init $h1 192.0.2.1/24 2001:db8:1::1/64 +} + +h1_destroy() +{ + simple_if_fini $h1 192.0.2.1/24 2001:db8:1::1/64 +} + +h2_create() +{ + simple_if_init $h2 192.0.2.2/24 2001:db8:1::2/64 +} + +h2_destroy() +{ + simple_if_fini $h2 192.0.2.2/24 2001:db8:1::2/64 +} + +switch_create() +{ + # 10 Seconds ageing time. + ip link add dev br0 type bridge vlan_filtering 1 ageing_time 1000 \ + mcast_snooping 0 + + ip link set dev $swp1 master br0 + ip link set dev $swp2 master br0 + + ip link set dev br0 up + ip link set dev $swp1 up + ip link set dev $swp2 up +} + +switch_destroy() +{ + ip link set dev $swp2 down + ip link set dev $swp1 down + + ip link del dev br0 +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + vrf_prepare + + h1_create + h2_create + + switch_create +} + +cleanup() +{ + pre_cleanup + + switch_destroy + + h2_destroy + h1_destroy + + vrf_cleanup +} + +ping_ipv4() +{ + ping_test $h1 192.0.2.2 +} + +ping_ipv6() +{ + ping6_test $h1 2001:db8:1::2 +} + +learning() +{ + learning_test "br0" $swp1 $h1 $h2 +} + +flooding() +{ + flood_test $swp2 $h1 $h2 +} + +vlan_deletion() +{ + # Test that the deletion of a VLAN on a bridge port does not affect + # the PVID VLAN + log_info "Add and delete a VLAN on bridge port $swp1" + + bridge vlan add vid 10 dev $swp1 + bridge vlan del vid 10 dev $swp1 + + ping_ipv4 + ping_ipv6 +} + +extern_learn() +{ + local mac=de:ad:be:ef:13:37 + local ageing_time + + # Test that externally learned FDB entries can roam, but not age out + RET=0 + + bridge fdb add de:ad:be:ef:13:37 dev $swp1 master extern_learn vlan 1 + + bridge fdb show brport $swp1 | grep -q de:ad:be:ef:13:37 + check_err $? "Did not find FDB entry when should" + + # Wait for 10 seconds after the ageing time to make sure the FDB entry + # was not aged out + ageing_time=$(bridge_ageing_time_get br0) + sleep $((ageing_time + 10)) + + bridge fdb show brport $swp1 | grep -q de:ad:be:ef:13:37 + check_err $? "FDB entry was aged out when should not" + + $MZ $h2 -c 1 -p 64 -a $mac -t ip -q + + bridge fdb show brport $swp2 | grep -q de:ad:be:ef:13:37 + check_err $? "FDB entry did not roam when should" + + log_test "Externally learned FDB entry - ageing & roaming" + + bridge fdb del de:ad:be:ef:13:37 dev $swp2 master vlan 1 &> /dev/null + bridge fdb del de:ad:be:ef:13:37 dev $swp1 master vlan 1 &> /dev/null +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tests_run + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/bridge_vlan_unaware.sh b/tools/testing/selftests/net/forwarding/bridge_vlan_unaware.sh new file mode 100755 index 000000000..c15c6c85c --- /dev/null +++ b/tools/testing/selftests/net/forwarding/bridge_vlan_unaware.sh @@ -0,0 +1,104 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +ALL_TESTS="ping_ipv4 ping_ipv6 learning flooding" +NUM_NETIFS=4 +source lib.sh + +h1_create() +{ + simple_if_init $h1 192.0.2.1/24 2001:db8:1::1/64 +} + +h1_destroy() +{ + simple_if_fini $h1 192.0.2.1/24 2001:db8:1::1/64 +} + +h2_create() +{ + simple_if_init $h2 192.0.2.2/24 2001:db8:1::2/64 +} + +h2_destroy() +{ + simple_if_fini $h2 192.0.2.2/24 2001:db8:1::2/64 +} + +switch_create() +{ + # 10 Seconds ageing time. + ip link add dev br0 type bridge ageing_time 1000 mcast_snooping 0 + + ip link set dev $swp1 master br0 + ip link set dev $swp2 master br0 + + ip link set dev br0 up + ip link set dev $swp1 up + ip link set dev $swp2 up +} + +switch_destroy() +{ + ip link set dev $swp2 down + ip link set dev $swp1 down + + ip link del dev br0 +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + vrf_prepare + + h1_create + h2_create + + switch_create +} + +cleanup() +{ + pre_cleanup + + switch_destroy + + h2_destroy + h1_destroy + + vrf_cleanup +} + +ping_ipv4() +{ + ping_test $h1 192.0.2.2 +} + +ping_ipv6() +{ + ping6_test $h1 2001:db8:1::2 +} + +learning() +{ + learning_test "br0" $swp1 $h1 $h2 +} + +flooding() +{ + flood_test $swp2 $h1 $h2 +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tests_run + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/config b/tools/testing/selftests/net/forwarding/config new file mode 100644 index 000000000..5cd2aed97 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/config @@ -0,0 +1,12 @@ +CONFIG_BRIDGE=m +CONFIG_VLAN_8021Q=m +CONFIG_BRIDGE_VLAN_FILTERING=y +CONFIG_NET_L3_MASTER_DEV=y +CONFIG_IPV6_MULTIPLE_TABLES=y +CONFIG_NET_VRF=m +CONFIG_BPF_SYSCALL=y +CONFIG_CGROUP_BPF=y +CONFIG_NET_CLS_FLOWER=m +CONFIG_NET_SCH_INGRESS=m +CONFIG_NET_ACT_GACT=m +CONFIG_VETH=m diff --git a/tools/testing/selftests/net/forwarding/devlink_lib.sh b/tools/testing/selftests/net/forwarding/devlink_lib.sh new file mode 100644 index 000000000..5ab1e5f43 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/devlink_lib.sh @@ -0,0 +1,108 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +############################################################################## +# Source library + +relative_path="${BASH_SOURCE%/*}" +if [[ "$relative_path" == "${BASH_SOURCE}" ]]; then + relative_path="." +fi + +source "$relative_path/lib.sh" + +############################################################################## +# Defines + +DEVLINK_DEV=$(devlink port show | grep "${NETIFS[p1]}" | \ + grep -v "${NETIFS[p1]}[0-9]" | cut -d" " -f1 | \ + rev | cut -d"/" -f2- | rev) +if [ -z "$DEVLINK_DEV" ]; then + echo "SKIP: ${NETIFS[p1]} has no devlink device registered for it" + exit 1 +fi +if [[ "$(echo $DEVLINK_DEV | grep -c pci)" -eq 0 ]]; then + echo "SKIP: devlink device's bus is not PCI" + exit 1 +fi + +DEVLINK_VIDDID=$(lspci -s $(echo $DEVLINK_DEV | cut -d"/" -f2) \ + -n | cut -d" " -f3) + +############################################################################## +# Sanity checks + +devlink -j resource show "$DEVLINK_DEV" &> /dev/null +if [ $? -ne 0 ]; then + echo "SKIP: iproute2 too old, missing devlink resource support" + exit 1 +fi + +############################################################################## +# Devlink helpers + +devlink_resource_names_to_path() +{ + local resource + local path="" + + for resource in "${@}"; do + if [ "$path" == "" ]; then + path="$resource" + else + path="${path}/$resource" + fi + done + + echo "$path" +} + +devlink_resource_get() +{ + local name=$1 + local resource_name=.[][\"$DEVLINK_DEV\"] + + resource_name="$resource_name | .[] | select (.name == \"$name\")" + + shift + for resource in "${@}"; do + resource_name="${resource_name} | .[\"resources\"][] | \ + select (.name == \"$resource\")" + done + + devlink -j resource show "$DEVLINK_DEV" | jq "$resource_name" +} + +devlink_resource_size_get() +{ + local size=$(devlink_resource_get "$@" | jq '.["size_new"]') + + if [ "$size" == "null" ]; then + devlink_resource_get "$@" | jq '.["size"]' + else + echo "$size" + fi +} + +devlink_resource_size_set() +{ + local new_size=$1 + local path + + shift + path=$(devlink_resource_names_to_path "$@") + devlink resource set "$DEVLINK_DEV" path "$path" size "$new_size" + check_err $? "Failed setting path $path to size $size" +} + +devlink_reload() +{ + local still_pending + + devlink dev reload "$DEVLINK_DEV" &> /dev/null + check_err $? "Failed reload" + + still_pending=$(devlink resource show "$DEVLINK_DEV" | \ + grep -c "size_new") + check_err $still_pending "Failed reload - There are still unset sizes" +} diff --git a/tools/testing/selftests/net/forwarding/forwarding.config.sample b/tools/testing/selftests/net/forwarding/forwarding.config.sample new file mode 100644 index 000000000..e819d049d --- /dev/null +++ b/tools/testing/selftests/net/forwarding/forwarding.config.sample @@ -0,0 +1,35 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +############################################################################## +# Topology description. p1 looped back to p2, p3 to p4 and so on. +declare -A NETIFS + +NETIFS[p1]=veth0 +NETIFS[p2]=veth1 +NETIFS[p3]=veth2 +NETIFS[p4]=veth3 +NETIFS[p5]=veth4 +NETIFS[p6]=veth5 +NETIFS[p7]=veth6 +NETIFS[p8]=veth7 + +############################################################################## +# Defines + +# IPv4 ping utility name +PING=ping +# IPv6 ping utility name. Some distributions use 'ping' for IPv6. +PING6=ping6 +# Packet generator. Some distributions use 'mz'. +MZ=mausezahn +# Time to wait after interfaces participating in the test are all UP +WAIT_TIME=5 +# Whether to pause on failure or not. +PAUSE_ON_FAIL=no +# Whether to pause on cleanup or not. +PAUSE_ON_CLEANUP=no +# Type of network interface to create +NETIF_TYPE=veth +# Whether to create virtual interfaces (veth) or not +NETIF_CREATE=yes diff --git a/tools/testing/selftests/net/forwarding/gre_multipath.sh b/tools/testing/selftests/net/forwarding/gre_multipath.sh new file mode 100755 index 000000000..a8d8e8b3d --- /dev/null +++ b/tools/testing/selftests/net/forwarding/gre_multipath.sh @@ -0,0 +1,257 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# Test traffic distribution when a wECMP route forwards traffic to two GRE +# tunnels. +# +# +-------------------------+ +# | H1 | +# | $h1 + | +# | 192.0.2.1/28 | | +# +-------------------|-----+ +# | +# +-------------------|------------------------+ +# | SW1 | | +# | $ol1 + | +# | 192.0.2.2/28 | +# | | +# | + g1a (gre) + g1b (gre) | +# | loc=192.0.2.65 loc=192.0.2.81 | +# | rem=192.0.2.66 --. rem=192.0.2.82 --. | +# | tos=inherit | tos=inherit | | +# | .------------------' | | +# | | .------------------' | +# | v v | +# | + $ul1.111 (vlan) + $ul1.222 (vlan) | +# | | 192.0.2.129/28 | 192.0.2.145/28 | +# | \ / | +# | \________________/ | +# | | | +# | + $ul1 | +# +------------|-------------------------------+ +# | +# +------------|-------------------------------+ +# | SW2 + $ul2 | +# | _______|________ | +# | / \ | +# | / \ | +# | + $ul2.111 (vlan) + $ul2.222 (vlan) | +# | ^ 192.0.2.130/28 ^ 192.0.2.146/28 | +# | | | | +# | | '------------------. | +# | '------------------. | | +# | + g2a (gre) | + g2b (gre) | | +# | loc=192.0.2.66 | loc=192.0.2.82 | | +# | rem=192.0.2.65 --' rem=192.0.2.81 --' | +# | tos=inherit tos=inherit | +# | | +# | $ol2 + | +# | 192.0.2.17/28 | | +# +-------------------|------------------------+ +# | +# +-------------------|-----+ +# | H2 | | +# | $h2 + | +# | 192.0.2.18/28 | +# +-------------------------+ + +ALL_TESTS=" + ping_ipv4 + multipath_ipv4 +" + +NUM_NETIFS=6 +source lib.sh + +h1_create() +{ + simple_if_init $h1 192.0.2.1/28 2001:db8:1::1/64 + ip route add vrf v$h1 192.0.2.16/28 via 192.0.2.2 +} + +h1_destroy() +{ + ip route del vrf v$h1 192.0.2.16/28 via 192.0.2.2 + simple_if_fini $h1 192.0.2.1/28 +} + +sw1_create() +{ + simple_if_init $ol1 192.0.2.2/28 + __simple_if_init $ul1 v$ol1 + vlan_create $ul1 111 v$ol1 192.0.2.129/28 + vlan_create $ul1 222 v$ol1 192.0.2.145/28 + + tunnel_create g1a gre 192.0.2.65 192.0.2.66 tos inherit dev v$ol1 + __simple_if_init g1a v$ol1 192.0.2.65/32 + ip route add vrf v$ol1 192.0.2.66/32 via 192.0.2.130 + + tunnel_create g1b gre 192.0.2.81 192.0.2.82 tos inherit dev v$ol1 + __simple_if_init g1b v$ol1 192.0.2.81/32 + ip route add vrf v$ol1 192.0.2.82/32 via 192.0.2.146 + + ip route add vrf v$ol1 192.0.2.16/28 \ + nexthop dev g1a \ + nexthop dev g1b +} + +sw1_destroy() +{ + ip route del vrf v$ol1 192.0.2.16/28 + + ip route del vrf v$ol1 192.0.2.82/32 via 192.0.2.146 + __simple_if_fini g1b 192.0.2.81/32 + tunnel_destroy g1b + + ip route del vrf v$ol1 192.0.2.66/32 via 192.0.2.130 + __simple_if_fini g1a 192.0.2.65/32 + tunnel_destroy g1a + + vlan_destroy $ul1 222 + vlan_destroy $ul1 111 + __simple_if_fini $ul1 + simple_if_fini $ol1 192.0.2.2/28 +} + +sw2_create() +{ + simple_if_init $ol2 192.0.2.17/28 + __simple_if_init $ul2 v$ol2 + vlan_create $ul2 111 v$ol2 192.0.2.130/28 + vlan_create $ul2 222 v$ol2 192.0.2.146/28 + + tunnel_create g2a gre 192.0.2.66 192.0.2.65 tos inherit dev v$ol2 + __simple_if_init g2a v$ol2 192.0.2.66/32 + ip route add vrf v$ol2 192.0.2.65/32 via 192.0.2.129 + + tunnel_create g2b gre 192.0.2.82 192.0.2.81 tos inherit dev v$ol2 + __simple_if_init g2b v$ol2 192.0.2.82/32 + ip route add vrf v$ol2 192.0.2.81/32 via 192.0.2.145 + + ip route add vrf v$ol2 192.0.2.0/28 \ + nexthop dev g2a \ + nexthop dev g2b + + tc qdisc add dev $ul2 clsact + tc filter add dev $ul2 ingress pref 111 prot 802.1Q \ + flower vlan_id 111 action pass + tc filter add dev $ul2 ingress pref 222 prot 802.1Q \ + flower vlan_id 222 action pass +} + +sw2_destroy() +{ + tc qdisc del dev $ul2 clsact + + ip route del vrf v$ol2 192.0.2.0/28 + + ip route del vrf v$ol2 192.0.2.81/32 via 192.0.2.145 + __simple_if_fini g2b 192.0.2.82/32 + tunnel_destroy g2b + + ip route del vrf v$ol2 192.0.2.65/32 via 192.0.2.129 + __simple_if_fini g2a 192.0.2.66/32 + tunnel_destroy g2a + + vlan_destroy $ul2 222 + vlan_destroy $ul2 111 + __simple_if_fini $ul2 + simple_if_fini $ol2 192.0.2.17/28 +} + +h2_create() +{ + simple_if_init $h2 192.0.2.18/28 + ip route add vrf v$h2 192.0.2.0/28 via 192.0.2.17 +} + +h2_destroy() +{ + ip route del vrf v$h2 192.0.2.0/28 via 192.0.2.17 + simple_if_fini $h2 192.0.2.18/28 +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + ol1=${NETIFS[p2]} + + ul1=${NETIFS[p3]} + ul2=${NETIFS[p4]} + + ol2=${NETIFS[p5]} + h2=${NETIFS[p6]} + + vrf_prepare + h1_create + sw1_create + sw2_create + h2_create + + forwarding_enable +} + +cleanup() +{ + pre_cleanup + + forwarding_restore + + h2_destroy + sw2_destroy + sw1_destroy + h1_destroy + vrf_cleanup +} + +multipath4_test() +{ + local what=$1; shift + local weight1=$1; shift + local weight2=$1; shift + + sysctl_set net.ipv4.fib_multipath_hash_policy 1 + ip route replace vrf v$ol1 192.0.2.16/28 \ + nexthop dev g1a weight $weight1 \ + nexthop dev g1b weight $weight2 + + local t0_111=$(tc_rule_stats_get $ul2 111 ingress) + local t0_222=$(tc_rule_stats_get $ul2 222 ingress) + + ip vrf exec v$h1 \ + $MZ $h1 -q -p 64 -A 192.0.2.1 -B 192.0.2.18 \ + -d 1msec -t udp "sp=1024,dp=0-32768" + + local t1_111=$(tc_rule_stats_get $ul2 111 ingress) + local t1_222=$(tc_rule_stats_get $ul2 222 ingress) + + local d111=$((t1_111 - t0_111)) + local d222=$((t1_222 - t0_222)) + multipath_eval "$what" $weight1 $weight2 $d111 $d222 + + ip route replace vrf v$ol1 192.0.2.16/28 \ + nexthop dev g1a \ + nexthop dev g1b + sysctl_restore net.ipv4.fib_multipath_hash_policy +} + +ping_ipv4() +{ + ping_test $h1 192.0.2.18 +} + +multipath_ipv4() +{ + log_info "Running IPv4 multipath tests" + multipath4_test "ECMP" 1 1 + multipath4_test "Weighted MP 2:1" 2 1 + multipath4_test "Weighted MP 11:45" 11 45 +} + +trap cleanup EXIT + +setup_prepare +setup_wait +tests_run + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh new file mode 100644 index 000000000..08bac6cf1 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/lib.sh @@ -0,0 +1,964 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +############################################################################## +# Defines + +# Can be overridden by the configuration file. +PING=${PING:=ping} +PING6=${PING6:=ping6} +MZ=${MZ:=mausezahn} +ARPING=${ARPING:=arping} +TEAMD=${TEAMD:=teamd} +WAIT_TIME=${WAIT_TIME:=5} +PAUSE_ON_FAIL=${PAUSE_ON_FAIL:=no} +PAUSE_ON_CLEANUP=${PAUSE_ON_CLEANUP:=no} +NETIF_TYPE=${NETIF_TYPE:=veth} +NETIF_CREATE=${NETIF_CREATE:=yes} + +relative_path="${BASH_SOURCE%/*}" +if [[ "$relative_path" == "${BASH_SOURCE}" ]]; then + relative_path="." +fi + +if [[ -f $relative_path/forwarding.config ]]; then + source "$relative_path/forwarding.config" +fi + +############################################################################## +# Sanity checks + +check_tc_version() +{ + tc -j &> /dev/null + if [[ $? -ne 0 ]]; then + echo "SKIP: iproute2 too old; tc is missing JSON support" + exit 1 + fi +} + +check_tc_shblock_support() +{ + tc filter help 2>&1 | grep block &> /dev/null + if [[ $? -ne 0 ]]; then + echo "SKIP: iproute2 too old; tc is missing shared block support" + exit 1 + fi +} + +check_tc_chain_support() +{ + tc help 2>&1|grep chain &> /dev/null + if [[ $? -ne 0 ]]; then + echo "SKIP: iproute2 too old; tc is missing chain support" + exit 1 + fi +} + +if [[ "$(id -u)" -ne 0 ]]; then + echo "SKIP: need root privileges" + exit 0 +fi + +if [[ "$CHECK_TC" = "yes" ]]; then + check_tc_version +fi + +require_command() +{ + local cmd=$1; shift + + if [[ ! -x "$(command -v "$cmd")" ]]; then + echo "SKIP: $cmd not installed" + exit 1 + fi +} + +require_command jq +require_command $MZ + +if [[ ! -v NUM_NETIFS ]]; then + echo "SKIP: importer does not define \"NUM_NETIFS\"" + exit 1 +fi + +############################################################################## +# Command line options handling + +count=0 + +while [[ $# -gt 0 ]]; do + if [[ "$count" -eq "0" ]]; then + unset NETIFS + declare -A NETIFS + fi + count=$((count + 1)) + NETIFS[p$count]="$1" + shift +done + +############################################################################## +# Network interfaces configuration + +create_netif_veth() +{ + local i + + for i in $(eval echo {1..$NUM_NETIFS}); do + local j=$((i+1)) + + ip link show dev ${NETIFS[p$i]} &> /dev/null + if [[ $? -ne 0 ]]; then + ip link add ${NETIFS[p$i]} type veth \ + peer name ${NETIFS[p$j]} + if [[ $? -ne 0 ]]; then + echo "Failed to create netif" + exit 1 + fi + fi + i=$j + done +} + +create_netif() +{ + case "$NETIF_TYPE" in + veth) create_netif_veth + ;; + *) echo "Can not create interfaces of type \'$NETIF_TYPE\'" + exit 1 + ;; + esac +} + +if [[ "$NETIF_CREATE" = "yes" ]]; then + create_netif +fi + +for i in $(eval echo {1..$NUM_NETIFS}); do + ip link show dev ${NETIFS[p$i]} &> /dev/null + if [[ $? -ne 0 ]]; then + echo "SKIP: could not find all required interfaces" + exit 1 + fi +done + +############################################################################## +# Helpers + +# Exit status to return at the end. Set in case one of the tests fails. +EXIT_STATUS=0 +# Per-test return value. Clear at the beginning of each test. +RET=0 + +check_err() +{ + local err=$1 + local msg=$2 + + if [[ $RET -eq 0 && $err -ne 0 ]]; then + RET=$err + retmsg=$msg + fi +} + +check_fail() +{ + local err=$1 + local msg=$2 + + if [[ $RET -eq 0 && $err -eq 0 ]]; then + RET=1 + retmsg=$msg + fi +} + +check_err_fail() +{ + local should_fail=$1; shift + local err=$1; shift + local what=$1; shift + + if ((should_fail)); then + check_fail $err "$what succeeded, but should have failed" + else + check_err $err "$what failed" + fi +} + +log_test() +{ + local test_name=$1 + local opt_str=$2 + + if [[ $# -eq 2 ]]; then + opt_str="($opt_str)" + fi + + if [[ $RET -ne 0 ]]; then + EXIT_STATUS=1 + printf "TEST: %-60s [FAIL]\n" "$test_name $opt_str" + if [[ ! -z "$retmsg" ]]; then + printf "\t%s\n" "$retmsg" + fi + if [ "${PAUSE_ON_FAIL}" = "yes" ]; then + echo "Hit enter to continue, 'q' to quit" + read a + [ "$a" = "q" ] && exit 1 + fi + return 1 + fi + + printf "TEST: %-60s [PASS]\n" "$test_name $opt_str" + return 0 +} + +log_info() +{ + local msg=$1 + + echo "INFO: $msg" +} + +setup_wait_dev() +{ + local dev=$1; shift + + while true; do + ip link show dev $dev up \ + | grep 'state UP' &> /dev/null + if [[ $? -ne 0 ]]; then + sleep 1 + else + break + fi + done +} + +setup_wait() +{ + local num_netifs=${1:-$NUM_NETIFS} + + for ((i = 1; i <= num_netifs; ++i)); do + setup_wait_dev ${NETIFS[p$i]} + done + + # Make sure links are ready. + sleep $WAIT_TIME +} + +lldpad_app_wait_set() +{ + local dev=$1; shift + + while lldptool -t -i $dev -V APP -c app | grep -Eq "pending|unknown"; do + echo "$dev: waiting for lldpad to push pending APP updates" + sleep 5 + done +} + +lldpad_app_wait_del() +{ + # Give lldpad a chance to push down the changes. If the device is downed + # too soon, the updates will be left pending. However, they will have + # been struck off the lldpad's DB already, so we won't be able to tell + # they are pending. Then on next test iteration this would cause + # weirdness as newly-added APP rules conflict with the old ones, + # sometimes getting stuck in an "unknown" state. + sleep 5 +} + +pre_cleanup() +{ + if [ "${PAUSE_ON_CLEANUP}" = "yes" ]; then + echo "Pausing before cleanup, hit any key to continue" + read + fi +} + +vrf_prepare() +{ + ip -4 rule add pref 32765 table local + ip -4 rule del pref 0 + ip -6 rule add pref 32765 table local + ip -6 rule del pref 0 +} + +vrf_cleanup() +{ + ip -6 rule add pref 0 table local + ip -6 rule del pref 32765 + ip -4 rule add pref 0 table local + ip -4 rule del pref 32765 +} + +__last_tb_id=0 +declare -A __TB_IDS + +__vrf_td_id_assign() +{ + local vrf_name=$1 + + __last_tb_id=$((__last_tb_id + 1)) + __TB_IDS[$vrf_name]=$__last_tb_id + return $__last_tb_id +} + +__vrf_td_id_lookup() +{ + local vrf_name=$1 + + return ${__TB_IDS[$vrf_name]} +} + +vrf_create() +{ + local vrf_name=$1 + local tb_id + + __vrf_td_id_assign $vrf_name + tb_id=$? + + ip link add dev $vrf_name type vrf table $tb_id + ip -4 route add table $tb_id unreachable default metric 4278198272 + ip -6 route add table $tb_id unreachable default metric 4278198272 +} + +vrf_destroy() +{ + local vrf_name=$1 + local tb_id + + __vrf_td_id_lookup $vrf_name + tb_id=$? + + ip -6 route del table $tb_id unreachable default metric 4278198272 + ip -4 route del table $tb_id unreachable default metric 4278198272 + ip link del dev $vrf_name +} + +__addr_add_del() +{ + local if_name=$1 + local add_del=$2 + local array + + shift + shift + array=("${@}") + + for addrstr in "${array[@]}"; do + ip address $add_del $addrstr dev $if_name + done +} + +__simple_if_init() +{ + local if_name=$1; shift + local vrf_name=$1; shift + local addrs=("${@}") + + ip link set dev $if_name master $vrf_name + ip link set dev $if_name up + + __addr_add_del $if_name add "${addrs[@]}" +} + +__simple_if_fini() +{ + local if_name=$1; shift + local addrs=("${@}") + + __addr_add_del $if_name del "${addrs[@]}" + + ip link set dev $if_name down + ip link set dev $if_name nomaster +} + +simple_if_init() +{ + local if_name=$1 + local vrf_name + local array + + shift + vrf_name=v$if_name + array=("${@}") + + vrf_create $vrf_name + ip link set dev $vrf_name up + __simple_if_init $if_name $vrf_name "${array[@]}" +} + +simple_if_fini() +{ + local if_name=$1 + local vrf_name + local array + + shift + vrf_name=v$if_name + array=("${@}") + + __simple_if_fini $if_name "${array[@]}" + vrf_destroy $vrf_name +} + +tunnel_create() +{ + local name=$1; shift + local type=$1; shift + local local=$1; shift + local remote=$1; shift + + ip link add name $name type $type \ + local $local remote $remote "$@" + ip link set dev $name up +} + +tunnel_destroy() +{ + local name=$1; shift + + ip link del dev $name +} + +vlan_create() +{ + local if_name=$1; shift + local vid=$1; shift + local vrf=$1; shift + local ips=("${@}") + local name=$if_name.$vid + + ip link add name $name link $if_name type vlan id $vid + if [ "$vrf" != "" ]; then + ip link set dev $name master $vrf + fi + ip link set dev $name up + __addr_add_del $name add "${ips[@]}" +} + +vlan_destroy() +{ + local if_name=$1; shift + local vid=$1; shift + local name=$if_name.$vid + + ip link del dev $name +} + +team_create() +{ + local if_name=$1; shift + local mode=$1; shift + + require_command $TEAMD + $TEAMD -t $if_name -d -c '{"runner": {"name": "'$mode'"}}' + for slave in "$@"; do + ip link set dev $slave down + ip link set dev $slave master $if_name + ip link set dev $slave up + done + ip link set dev $if_name up +} + +team_destroy() +{ + local if_name=$1; shift + + $TEAMD -t $if_name -k +} + +master_name_get() +{ + local if_name=$1 + + ip -j link show dev $if_name | jq -r '.[]["master"]' +} + +link_stats_tx_packets_get() +{ + local if_name=$1 + + ip -j -s link show dev $if_name | jq '.[]["stats64"]["tx"]["packets"]' +} + +tc_rule_stats_get() +{ + local dev=$1; shift + local pref=$1; shift + local dir=$1; shift + + tc -j -s filter show dev $dev ${dir:-ingress} pref $pref \ + | jq '.[1].options.actions[].stats.packets' +} + +mac_get() +{ + local if_name=$1 + + ip -j link show dev $if_name | jq -r '.[]["address"]' +} + +bridge_ageing_time_get() +{ + local bridge=$1 + local ageing_time + + # Need to divide by 100 to convert to seconds. + ageing_time=$(ip -j -d link show dev $bridge \ + | jq '.[]["linkinfo"]["info_data"]["ageing_time"]') + echo $((ageing_time / 100)) +} + +declare -A SYSCTL_ORIG +sysctl_set() +{ + local key=$1; shift + local value=$1; shift + + SYSCTL_ORIG[$key]=$(sysctl -n $key) + sysctl -qw $key=$value +} + +sysctl_restore() +{ + local key=$1; shift + + sysctl -qw $key=${SYSCTL_ORIG["$key"]} +} + +forwarding_enable() +{ + sysctl_set net.ipv4.conf.all.forwarding 1 + sysctl_set net.ipv6.conf.all.forwarding 1 +} + +forwarding_restore() +{ + sysctl_restore net.ipv6.conf.all.forwarding + sysctl_restore net.ipv4.conf.all.forwarding +} + +tc_offload_check() +{ + local num_netifs=${1:-$NUM_NETIFS} + + for ((i = 1; i <= num_netifs; ++i)); do + ethtool -k ${NETIFS[p$i]} \ + | grep "hw-tc-offload: on" &> /dev/null + if [[ $? -ne 0 ]]; then + return 1 + fi + done + + return 0 +} + +trap_install() +{ + local dev=$1; shift + local direction=$1; shift + + # Some devices may not support or need in-hardware trapping of traffic + # (e.g. the veth pairs that this library creates for non-existent + # loopbacks). Use continue instead, so that there is a filter in there + # (some tests check counters), and so that other filters are still + # processed. + tc filter add dev $dev $direction pref 1 \ + flower skip_sw action trap 2>/dev/null \ + || tc filter add dev $dev $direction pref 1 \ + flower action continue +} + +trap_uninstall() +{ + local dev=$1; shift + local direction=$1; shift + + tc filter del dev $dev $direction pref 1 flower +} + +slow_path_trap_install() +{ + # For slow-path testing, we need to install a trap to get to + # slow path the packets that would otherwise be switched in HW. + if [ "${tcflags/skip_hw}" != "$tcflags" ]; then + trap_install "$@" + fi +} + +slow_path_trap_uninstall() +{ + if [ "${tcflags/skip_hw}" != "$tcflags" ]; then + trap_uninstall "$@" + fi +} + +__icmp_capture_add_del() +{ + local add_del=$1; shift + local pref=$1; shift + local vsuf=$1; shift + local tundev=$1; shift + local filter=$1; shift + + tc filter $add_del dev "$tundev" ingress \ + proto ip$vsuf pref $pref \ + flower ip_proto icmp$vsuf $filter \ + action pass +} + +icmp_capture_install() +{ + __icmp_capture_add_del add 100 "" "$@" +} + +icmp_capture_uninstall() +{ + __icmp_capture_add_del del 100 "" "$@" +} + +icmp6_capture_install() +{ + __icmp_capture_add_del add 100 v6 "$@" +} + +icmp6_capture_uninstall() +{ + __icmp_capture_add_del del 100 v6 "$@" +} + +__vlan_capture_add_del() +{ + local add_del=$1; shift + local pref=$1; shift + local dev=$1; shift + local filter=$1; shift + + tc filter $add_del dev "$dev" ingress \ + proto 802.1q pref $pref \ + flower $filter \ + action pass +} + +vlan_capture_install() +{ + __vlan_capture_add_del add 100 "$@" +} + +vlan_capture_uninstall() +{ + __vlan_capture_add_del del 100 "$@" +} + +__dscp_capture_add_del() +{ + local add_del=$1; shift + local dev=$1; shift + local base=$1; shift + local dscp; + + for prio in {0..7}; do + dscp=$((base + prio)) + __icmp_capture_add_del $add_del $((dscp + 100)) "" $dev \ + "skip_hw ip_tos $((dscp << 2))" + done +} + +dscp_capture_install() +{ + local dev=$1; shift + local base=$1; shift + + __dscp_capture_add_del add $dev $base +} + +dscp_capture_uninstall() +{ + local dev=$1; shift + local base=$1; shift + + __dscp_capture_add_del del $dev $base +} + +dscp_fetch_stats() +{ + local dev=$1; shift + local base=$1; shift + + for prio in {0..7}; do + local dscp=$((base + prio)) + local t=$(tc_rule_stats_get $dev $((dscp + 100))) + echo "[$dscp]=$t " + done +} + +matchall_sink_create() +{ + local dev=$1; shift + + tc qdisc add dev $dev clsact + tc filter add dev $dev ingress \ + pref 10000 \ + matchall \ + action drop +} + +tests_run() +{ + local current_test + + for current_test in ${TESTS:-$ALL_TESTS}; do + $current_test + done +} + +multipath_eval() +{ + local desc="$1" + local weight_rp12=$2 + local weight_rp13=$3 + local packets_rp12=$4 + local packets_rp13=$5 + local weights_ratio packets_ratio diff + + RET=0 + + if [[ "$weight_rp12" -gt "$weight_rp13" ]]; then + weights_ratio=$(echo "scale=2; $weight_rp12 / $weight_rp13" \ + | bc -l) + else + weights_ratio=$(echo "scale=2; $weight_rp13 / $weight_rp12" \ + | bc -l) + fi + + if [[ "$packets_rp12" -eq "0" || "$packets_rp13" -eq "0" ]]; then + check_err 1 "Packet difference is 0" + log_test "Multipath" + log_info "Expected ratio $weights_ratio" + return + fi + + if [[ "$weight_rp12" -gt "$weight_rp13" ]]; then + packets_ratio=$(echo "scale=2; $packets_rp12 / $packets_rp13" \ + | bc -l) + else + packets_ratio=$(echo "scale=2; $packets_rp13 / $packets_rp12" \ + | bc -l) + fi + + diff=$(echo $weights_ratio - $packets_ratio | bc -l) + diff=${diff#-} + + test "$(echo "$diff / $weights_ratio > 0.15" | bc -l)" -eq 0 + check_err $? "Too large discrepancy between expected and measured ratios" + log_test "$desc" + log_info "Expected ratio $weights_ratio Measured ratio $packets_ratio" +} + +############################################################################## +# Tests + +ping_do() +{ + local if_name=$1 + local dip=$2 + local vrf_name + + vrf_name=$(master_name_get $if_name) + ip vrf exec $vrf_name $PING $dip -c 10 -i 0.1 -w 2 &> /dev/null +} + +ping_test() +{ + RET=0 + + ping_do $1 $2 + check_err $? + log_test "ping" +} + +ping6_do() +{ + local if_name=$1 + local dip=$2 + local vrf_name + + vrf_name=$(master_name_get $if_name) + ip vrf exec $vrf_name $PING6 $dip -c 10 -i 0.1 -w 2 &> /dev/null +} + +ping6_test() +{ + RET=0 + + ping6_do $1 $2 + check_err $? + log_test "ping6" +} + +learning_test() +{ + local bridge=$1 + local br_port1=$2 # Connected to `host1_if`. + local host1_if=$3 + local host2_if=$4 + local mac=de:ad:be:ef:13:37 + local ageing_time + + RET=0 + + bridge -j fdb show br $bridge brport $br_port1 \ + | jq -e ".[] | select(.mac == \"$mac\")" &> /dev/null + check_fail $? "Found FDB record when should not" + + # Disable unknown unicast flooding on `br_port1` to make sure + # packets are only forwarded through the port after a matching + # FDB entry was installed. + bridge link set dev $br_port1 flood off + + tc qdisc add dev $host1_if ingress + tc filter add dev $host1_if ingress protocol ip pref 1 handle 101 \ + flower dst_mac $mac action drop + + $MZ $host2_if -c 1 -p 64 -b $mac -t ip -q + sleep 1 + + tc -j -s filter show dev $host1_if ingress \ + | jq -e ".[] | select(.options.handle == 101) \ + | select(.options.actions[0].stats.packets == 1)" &> /dev/null + check_fail $? "Packet reached second host when should not" + + $MZ $host1_if -c 1 -p 64 -a $mac -t ip -q + sleep 1 + + bridge -j fdb show br $bridge brport $br_port1 \ + | jq -e ".[] | select(.mac == \"$mac\")" &> /dev/null + check_err $? "Did not find FDB record when should" + + $MZ $host2_if -c 1 -p 64 -b $mac -t ip -q + sleep 1 + + tc -j -s filter show dev $host1_if ingress \ + | jq -e ".[] | select(.options.handle == 101) \ + | select(.options.actions[0].stats.packets == 1)" &> /dev/null + check_err $? "Packet did not reach second host when should" + + # Wait for 10 seconds after the ageing time to make sure FDB + # record was aged-out. + ageing_time=$(bridge_ageing_time_get $bridge) + sleep $((ageing_time + 10)) + + bridge -j fdb show br $bridge brport $br_port1 \ + | jq -e ".[] | select(.mac == \"$mac\")" &> /dev/null + check_fail $? "Found FDB record when should not" + + bridge link set dev $br_port1 learning off + + $MZ $host1_if -c 1 -p 64 -a $mac -t ip -q + sleep 1 + + bridge -j fdb show br $bridge brport $br_port1 \ + | jq -e ".[] | select(.mac == \"$mac\")" &> /dev/null + check_fail $? "Found FDB record when should not" + + bridge link set dev $br_port1 learning on + + tc filter del dev $host1_if ingress protocol ip pref 1 handle 101 flower + tc qdisc del dev $host1_if ingress + + bridge link set dev $br_port1 flood on + + log_test "FDB learning" +} + +flood_test_do() +{ + local should_flood=$1 + local mac=$2 + local ip=$3 + local host1_if=$4 + local host2_if=$5 + local err=0 + + # Add an ACL on `host2_if` which will tell us whether the packet + # was flooded to it or not. + tc qdisc add dev $host2_if ingress + tc filter add dev $host2_if ingress protocol ip pref 1 handle 101 \ + flower dst_mac $mac action drop + + $MZ $host1_if -c 1 -p 64 -b $mac -B $ip -t ip -q + sleep 1 + + tc -j -s filter show dev $host2_if ingress \ + | jq -e ".[] | select(.options.handle == 101) \ + | select(.options.actions[0].stats.packets == 1)" &> /dev/null + if [[ $? -ne 0 && $should_flood == "true" || \ + $? -eq 0 && $should_flood == "false" ]]; then + err=1 + fi + + tc filter del dev $host2_if ingress protocol ip pref 1 handle 101 flower + tc qdisc del dev $host2_if ingress + + return $err +} + +flood_unicast_test() +{ + local br_port=$1 + local host1_if=$2 + local host2_if=$3 + local mac=de:ad:be:ef:13:37 + local ip=192.0.2.100 + + RET=0 + + bridge link set dev $br_port flood off + + flood_test_do false $mac $ip $host1_if $host2_if + check_err $? "Packet flooded when should not" + + bridge link set dev $br_port flood on + + flood_test_do true $mac $ip $host1_if $host2_if + check_err $? "Packet was not flooded when should" + + log_test "Unknown unicast flood" +} + +flood_multicast_test() +{ + local br_port=$1 + local host1_if=$2 + local host2_if=$3 + local mac=01:00:5e:00:00:01 + local ip=239.0.0.1 + + RET=0 + + bridge link set dev $br_port mcast_flood off + + flood_test_do false $mac $ip $host1_if $host2_if + check_err $? "Packet flooded when should not" + + bridge link set dev $br_port mcast_flood on + + flood_test_do true $mac $ip $host1_if $host2_if + check_err $? "Packet was not flooded when should" + + log_test "Unregistered multicast flood" +} + +flood_test() +{ + # `br_port` is connected to `host2_if` + local br_port=$1 + local host1_if=$2 + local host2_if=$3 + + flood_unicast_test $br_port $host1_if $host2_if + flood_multicast_test $br_port $host1_if $host2_if +} diff --git a/tools/testing/selftests/net/forwarding/mirror_gre.sh b/tools/testing/selftests/net/forwarding/mirror_gre.sh new file mode 100755 index 000000000..026644360 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/mirror_gre.sh @@ -0,0 +1,160 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# This test uses standard topology for testing gretap. See +# mirror_gre_topo_lib.sh for more details. +# +# Test for "tc action mirred egress mirror" when the device to mirror to is a +# gretap or ip6gretap netdevice. Expect that the packets come out encapsulated, +# and another gretap / ip6gretap netdevice is then capable of decapsulating the +# traffic. Test that the payload is what is expected (ICMP ping request or +# reply, depending on test). + +ALL_TESTS=" + test_gretap + test_ip6gretap + test_gretap_mac + test_ip6gretap_mac + test_two_spans +" + +NUM_NETIFS=6 +source lib.sh +source mirror_lib.sh +source mirror_gre_lib.sh +source mirror_gre_topo_lib.sh + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + swp3=${NETIFS[p5]} + h3=${NETIFS[p6]} + + vrf_prepare + mirror_gre_topo_create + + ip address add dev $swp3 192.0.2.129/28 + ip address add dev $h3 192.0.2.130/28 + + ip address add dev $swp3 2001:db8:2::1/64 + ip address add dev $h3 2001:db8:2::2/64 +} + +cleanup() +{ + pre_cleanup + + ip address del dev $h3 2001:db8:2::2/64 + ip address del dev $swp3 2001:db8:2::1/64 + + ip address del dev $h3 192.0.2.130/28 + ip address del dev $swp3 192.0.2.129/28 + + mirror_gre_topo_destroy + vrf_cleanup +} + +test_span_gre_mac() +{ + local tundev=$1; shift + local direction=$1; shift + local what=$1; shift + + case "$direction" in + ingress) local src_mac=$(mac_get $h1); local dst_mac=$(mac_get $h2) + ;; + egress) local src_mac=$(mac_get $h2); local dst_mac=$(mac_get $h1) + ;; + esac + + RET=0 + + mirror_install $swp1 $direction $tundev "matchall $tcflags" + icmp_capture_install h3-${tundev} "src_mac $src_mac dst_mac $dst_mac" + + mirror_test v$h1 192.0.2.1 192.0.2.2 h3-${tundev} 100 10 + + icmp_capture_uninstall h3-${tundev} + mirror_uninstall $swp1 $direction + + log_test "$direction $what: envelope MAC ($tcflags)" +} + +test_two_spans() +{ + RET=0 + + mirror_install $swp1 ingress gt4 "matchall $tcflags" + mirror_install $swp1 egress gt6 "matchall $tcflags" + quick_test_span_gre_dir gt4 ingress + quick_test_span_gre_dir gt6 egress + + mirror_uninstall $swp1 ingress + fail_test_span_gre_dir gt4 ingress + quick_test_span_gre_dir gt6 egress + + mirror_install $swp1 ingress gt4 "matchall $tcflags" + mirror_uninstall $swp1 egress + quick_test_span_gre_dir gt4 ingress + fail_test_span_gre_dir gt6 egress + + mirror_uninstall $swp1 ingress + log_test "two simultaneously configured mirrors ($tcflags)" +} + +test_gretap() +{ + full_test_span_gre_dir gt4 ingress 8 0 "mirror to gretap" + full_test_span_gre_dir gt4 egress 0 8 "mirror to gretap" +} + +test_ip6gretap() +{ + full_test_span_gre_dir gt6 ingress 8 0 "mirror to ip6gretap" + full_test_span_gre_dir gt6 egress 0 8 "mirror to ip6gretap" +} + +test_gretap_mac() +{ + test_span_gre_mac gt4 ingress "mirror to gretap" + test_span_gre_mac gt4 egress "mirror to gretap" +} + +test_ip6gretap_mac() +{ + test_span_gre_mac gt6 ingress "mirror to ip6gretap" + test_span_gre_mac gt6 egress "mirror to ip6gretap" +} + +test_all() +{ + slow_path_trap_install $swp1 ingress + slow_path_trap_install $swp1 egress + + tests_run + + slow_path_trap_uninstall $swp1 egress + slow_path_trap_uninstall $swp1 ingress +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tcflags="skip_hw" +test_all + +if ! tc_offload_check; then + echo "WARN: Could not test offloaded functionality" +else + tcflags="skip_sw" + test_all +fi + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_bound.sh b/tools/testing/selftests/net/forwarding/mirror_gre_bound.sh new file mode 100755 index 000000000..360ca133b --- /dev/null +++ b/tools/testing/selftests/net/forwarding/mirror_gre_bound.sh @@ -0,0 +1,226 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# +---------------------+ +---------------------+ +# | H1 | | H2 | +# | + $h1 | | $h2 + | +# | | 192.0.2.1/28 | | 192.0.2.2/28 | | +# +-----|---------------+ +---------------|-----+ +# | | +# +-----|-------------------------------------------------------------|-----+ +# | SW o--> mirror | | +# | +---|-------------------------------------------------------------|---+ | +# | | + $swp1 BR $swp2 + | | +# | +---------------------------------------------------------------------+ | +# | | +# | +---------------------------------------------------------------------+ | +# | | OL + gt6 (ip6gretap) + gt4 (gretap) | | +# | | : loc=2001:db8:2::1 : loc=192.0.2.129 | | +# | | : rem=2001:db8:2::2 : rem=192.0.2.130 | | +# | | : ttl=100 : ttl=100 | | +# | | : tos=inherit : tos=inherit | | +# | +-------------------------:--|-------------------:--|-----------------+ | +# | : | : | | +# | +-------------------------:--|-------------------:--|-----------------+ | +# | | UL : |,---------------------' | | +# | | + $swp3 : || : | | +# | | | 192.0.2.129/28 : vv : | | +# | | | 2001:db8:2::1/64 : + ul (dummy) : | | +# | +---|---------------------:----------------------:--------------------+ | +# +-----|---------------------:----------------------:----------------------+ +# | : : +# +-----|---------------------:----------------------:----------------------+ +# | H3 + $h3 + h3-gt6 (ip6gretap) + h3-gt4 (gretap) | +# | 192.0.2.130/28 loc=2001:db8:2::2 loc=192.0.2.130 | +# | 2001:db8:2::2/64 rem=2001:db8:2::1 rem=192.0.2.129 | +# | ttl=100 ttl=100 | +# | tos=inherit tos=inherit | +# | | +# +-------------------------------------------------------------------------+ +# +# This tests mirroring to gretap and ip6gretap configured in an overlay / +# underlay manner, i.e. with a bound dummy device that marks underlay VRF where +# the encapsulated packed should be routed. + +ALL_TESTS=" + test_gretap + test_ip6gretap +" + +NUM_NETIFS=6 +source lib.sh +source mirror_lib.sh +source mirror_gre_lib.sh + +h1_create() +{ + simple_if_init $h1 192.0.2.1/28 +} + +h1_destroy() +{ + simple_if_fini $h1 192.0.2.1/28 +} + +h2_create() +{ + simple_if_init $h2 192.0.2.2/28 +} + +h2_destroy() +{ + simple_if_fini $h2 192.0.2.2/28 +} + +h3_create() +{ + simple_if_init $h3 192.0.2.130/28 2001:db8:2::2/64 + + tunnel_create h3-gt4 gretap 192.0.2.130 192.0.2.129 + ip link set h3-gt4 vrf v$h3 + matchall_sink_create h3-gt4 + + tunnel_create h3-gt6 ip6gretap 2001:db8:2::2 2001:db8:2::1 + ip link set h3-gt6 vrf v$h3 + matchall_sink_create h3-gt6 +} + +h3_destroy() +{ + tunnel_destroy h3-gt6 + tunnel_destroy h3-gt4 + + simple_if_fini $h3 192.0.2.130/28 2001:db8:2::2/64 +} + +switch_create() +{ + # Bridge between H1 and H2. + + ip link add name br1 type bridge vlan_filtering 1 + ip link set dev br1 up + + ip link set dev $swp1 master br1 + ip link set dev $swp1 up + + ip link set dev $swp2 master br1 + ip link set dev $swp2 up + + tc qdisc add dev $swp1 clsact + + # Underlay. + + simple_if_init $swp3 192.0.2.129/28 2001:db8:2::1/64 + + ip link add name ul type dummy + ip link set dev ul master v$swp3 + ip link set dev ul up + + # Overlay. + + vrf_create vrf-ol + ip link set dev vrf-ol up + + tunnel_create gt4 gretap 192.0.2.129 192.0.2.130 \ + ttl 100 tos inherit dev ul + ip link set dev gt4 master vrf-ol + ip link set dev gt4 up + + tunnel_create gt6 ip6gretap 2001:db8:2::1 2001:db8:2::2 \ + ttl 100 tos inherit dev ul allow-localremote + ip link set dev gt6 master vrf-ol + ip link set dev gt6 up +} + +switch_destroy() +{ + vrf_destroy vrf-ol + + tunnel_destroy gt6 + tunnel_destroy gt4 + + simple_if_fini $swp3 192.0.2.129/28 2001:db8:2::1/64 + + ip link del dev ul + + tc qdisc del dev $swp1 clsact + + ip link set dev $swp1 down + ip link set dev $swp2 down + ip link del dev br1 +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + swp3=${NETIFS[p5]} + h3=${NETIFS[p6]} + + vrf_prepare + + h1_create + h2_create + h3_create + + switch_create +} + +cleanup() +{ + pre_cleanup + + switch_destroy + + h3_destroy + h2_destroy + h1_destroy + + vrf_cleanup +} + +test_gretap() +{ + full_test_span_gre_dir gt4 ingress 8 0 "mirror to gretap w/ UL" + full_test_span_gre_dir gt4 egress 0 8 "mirror to gretap w/ UL" +} + +test_ip6gretap() +{ + full_test_span_gre_dir gt6 ingress 8 0 "mirror to ip6gretap w/ UL" + full_test_span_gre_dir gt6 egress 0 8 "mirror to ip6gretap w/ UL" +} + +test_all() +{ + RET=0 + + slow_path_trap_install $swp1 ingress + slow_path_trap_install $swp1 egress + + tests_run + + slow_path_trap_uninstall $swp1 egress + slow_path_trap_uninstall $swp1 ingress +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tcflags="skip_hw" +test_all + +if ! tc_offload_check; then + echo "WARN: Could not test offloaded functionality" +else + tcflags="skip_sw" + test_all +fi + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1d.sh b/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1d.sh new file mode 100755 index 000000000..c5095da7f --- /dev/null +++ b/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1d.sh @@ -0,0 +1,132 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# Test for "tc action mirred egress mirror" when the underlay route points at a +# bridge device without vlan filtering (802.1d). +# +# This test uses standard topology for testing mirror-to-gretap. See +# mirror_gre_topo_lib.sh for more details. The full topology is as follows: +# +# +---------------------+ +---------------------+ +# | H1 | | H2 | +# | + $h1 | | $h2 + | +# | | 192.0.2.1/28 | | 192.0.2.2/28 | | +# +-----|---------------+ +---------------|-----+ +# | | +# +-----|-------------------------------------------------------------|-----+ +# | SW o---> mirror | | +# | +---|-------------------------------------------------------------|---+ | +# | | + $swp1 + br1 (802.1q bridge) $swp2 + | | +# | +---------------------------------------------------------------------+ | +# | | +# | +---------------------------------------------------------------------+ | +# | | + br2 (802.1d bridge) | | +# | | 192.0.2.129/28 | | +# | | + $swp3 2001:db8:2::1/64 | | +# | +---|-----------------------------------------------------------------+ | +# | | ^ ^ | +# | | + gt6 (ip6gretap) | + gt4 (gretap) | | +# | | : loc=2001:db8:2::1 | : loc=192.0.2.129 | | +# | | : rem=2001:db8:2::2 -+ : rem=192.0.2.130 -+ | +# | | : ttl=100 : ttl=100 | +# | | : tos=inherit : tos=inherit | +# +-----|---------------------:----------------------:----------------------+ +# | : : +# +-----|---------------------:----------------------:----------------------+ +# | H3 + $h3 + h3-gt6(ip6gretap) + h3-gt4 (gretap) | +# | 192.0.2.130/28 loc=2001:db8:2::2 loc=192.0.2.130 | +# | 2001:db8:2::2/64 rem=2001:db8:2::1 rem=192.0.2.129 | +# | ttl=100 ttl=100 | +# | tos=inherit tos=inherit | +# +-------------------------------------------------------------------------+ + +ALL_TESTS=" + test_gretap + test_ip6gretap +" + +NUM_NETIFS=6 +source lib.sh +source mirror_lib.sh +source mirror_gre_lib.sh +source mirror_gre_topo_lib.sh + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + swp3=${NETIFS[p5]} + h3=${NETIFS[p6]} + + vrf_prepare + mirror_gre_topo_create + + ip link add name br2 type bridge vlan_filtering 0 + ip link set dev br2 up + + ip link set dev $swp3 master br2 + ip route add 192.0.2.130/32 dev br2 + ip -6 route add 2001:db8:2::2/128 dev br2 + + ip address add dev br2 192.0.2.129/28 + ip address add dev br2 2001:db8:2::1/64 + + ip address add dev $h3 192.0.2.130/28 + ip address add dev $h3 2001:db8:2::2/64 +} + +cleanup() +{ + pre_cleanup + + ip address del dev $h3 2001:db8:2::2/64 + ip address del dev $h3 192.0.2.130/28 + ip link del dev br2 + + mirror_gre_topo_destroy + vrf_cleanup +} + +test_gretap() +{ + full_test_span_gre_dir gt4 ingress 8 0 "mirror to gretap" + full_test_span_gre_dir gt4 egress 0 8 "mirror to gretap" +} + +test_ip6gretap() +{ + full_test_span_gre_dir gt6 ingress 8 0 "mirror to ip6gretap" + full_test_span_gre_dir gt6 egress 0 8 "mirror to ip6gretap" +} + +test_all() +{ + slow_path_trap_install $swp1 ingress + slow_path_trap_install $swp1 egress + + tests_run + + slow_path_trap_uninstall $swp1 egress + slow_path_trap_uninstall $swp1 ingress +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tcflags="skip_hw" +test_all + +if ! tc_offload_check; then + echo "WARN: Could not test offloaded functionality" +else + tcflags="skip_sw" + test_all +fi + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1d_vlan.sh b/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1d_vlan.sh new file mode 100755 index 000000000..f8cda822c --- /dev/null +++ b/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1d_vlan.sh @@ -0,0 +1,132 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# This test uses standard topology for testing gretap. See +# mirror_gre_topo_lib.sh for more details. +# +# Test for "tc action mirred egress mirror" when the underlay route points at a +# bridge device without vlan filtering (802.1d). The device attached to that +# bridge is a VLAN. + +ALL_TESTS=" + test_gretap + test_ip6gretap + test_gretap_stp + test_ip6gretap_stp +" + +NUM_NETIFS=6 +source lib.sh +source mirror_lib.sh +source mirror_gre_lib.sh +source mirror_gre_topo_lib.sh + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + swp3=${NETIFS[p5]} + h3=${NETIFS[p6]} + + vrf_prepare + mirror_gre_topo_create + + ip link add name br2 type bridge vlan_filtering 0 + ip link set dev br2 up + + vlan_create $swp3 555 + + ip link set dev $swp3.555 master br2 + ip route add 192.0.2.130/32 dev br2 + ip -6 route add 2001:db8:2::2/128 dev br2 + + ip address add dev br2 192.0.2.129/32 + ip address add dev br2 2001:db8:2::1/128 + + vlan_create $h3 555 v$h3 192.0.2.130/28 2001:db8:2::2/64 +} + +cleanup() +{ + pre_cleanup + + vlan_destroy $h3 555 + ip link del dev br2 + vlan_destroy $swp3 555 + + mirror_gre_topo_destroy + vrf_cleanup +} + +test_vlan_match() +{ + local tundev=$1; shift + local vlan_match=$1; shift + local what=$1; shift + + full_test_span_gre_dir_vlan $tundev ingress "$vlan_match" 8 0 "$what" + full_test_span_gre_dir_vlan $tundev egress "$vlan_match" 0 8 "$what" +} + +test_gretap() +{ + test_vlan_match gt4 'skip_hw vlan_id 555 vlan_ethtype ip' \ + "mirror to gretap" +} + +test_ip6gretap() +{ + test_vlan_match gt6 'skip_hw vlan_id 555 vlan_ethtype ip' \ + "mirror to ip6gretap" +} + +test_gretap_stp() +{ + # Sometimes after mirror installation, the neighbor's state is not valid. + # The reason is that there is no SW datapath activity related to the + # neighbor for the remote GRE address. Therefore whether the corresponding + # neighbor will be valid is a matter of luck, and the test is thus racy. + # Set the neighbor's state to permanent, so it would be always valid. + ip neigh replace 192.0.2.130 lladdr $(mac_get $h3) \ + nud permanent dev br2 + full_test_span_gre_stp gt4 $swp3.555 "mirror to gretap" +} + +test_ip6gretap_stp() +{ + ip neigh replace 2001:db8:2::2 lladdr $(mac_get $h3) \ + nud permanent dev br2 + full_test_span_gre_stp gt6 $swp3.555 "mirror to ip6gretap" +} + +test_all() +{ + slow_path_trap_install $swp1 ingress + slow_path_trap_install $swp1 egress + + tests_run + + slow_path_trap_uninstall $swp1 egress + slow_path_trap_uninstall $swp1 ingress +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tcflags="skip_hw" +test_all + +if ! tc_offload_check; then + echo "WARN: Could not test offloaded functionality" +else + tcflags="skip_sw" + test_all +fi + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1q.sh b/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1q.sh new file mode 100755 index 000000000..9ff22f280 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1q.sh @@ -0,0 +1,129 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# Test for "tc action mirred egress mirror" when the underlay route points at a +# bridge device with vlan filtering (802.1q). +# +# This test uses standard topology for testing mirror-to-gretap. See +# mirror_gre_topo_lib.sh for more details. The full topology is as follows: +# +# +---------------------+ +---------------------+ +# | H1 | | H2 | +# | + $h1 | | $h2 + | +# | | 192.0.2.1/28 | | 192.0.2.2/28 | | +# +-----|---------------+ +---------------|-----+ +# | | +# +-----|---------------------------------------------------------------|-----+ +# | SW o---> mirror | | +# | +---|---------------------------------------------------------------|---+ | +# | | + $swp1 + br1 (802.1q bridge) $swp2 + | | +# | | 192.0.2.129/28 | | +# | | + $swp3 2001:db8:2::1/64 | | +# | | | vid555 vid555[pvid,untagged] | | +# | +---|-------------------------------------------------------------------+ | +# | | ^ ^ | +# | | + gt6 (ip6gretap) | + gt4 (gretap) | | +# | | : loc=2001:db8:2::1 | : loc=192.0.2.129 | | +# | | : rem=2001:db8:2::2 -+ : rem=192.0.2.130 -+ | +# | | : ttl=100 : ttl=100 | +# | | : tos=inherit : tos=inherit | +# +-----|---------------------:------------------------:----------------------+ +# | : : +# +-----|---------------------:------------------------:----------------------+ +# | H3 + $h3 + h3-gt6(ip6gretap) + h3-gt4 (gretap) | +# | | loc=2001:db8:2::2 loc=192.0.2.130 | +# | + $h3.555 rem=2001:db8:2::1 rem=192.0.2.129 | +# | 192.0.2.130/28 ttl=100 ttl=100 | +# | 2001:db8:2::2/64 tos=inherit tos=inherit | +# +---------------------------------------------------------------------------+ + +ALL_TESTS=" + test_gretap + test_ip6gretap +" + +NUM_NETIFS=6 +source lib.sh +source mirror_lib.sh +source mirror_gre_lib.sh +source mirror_gre_topo_lib.sh + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + swp3=${NETIFS[p5]} + h3=${NETIFS[p6]} + + vrf_prepare + mirror_gre_topo_create + # Avoid changing br1's PVID while it is operational as a L3 interface. + ip link set dev br1 down + + ip link set dev $swp3 master br1 + bridge vlan add dev br1 vid 555 pvid untagged self + ip link set dev br1 up + ip address add dev br1 192.0.2.129/28 + ip address add dev br1 2001:db8:2::1/64 + + ip -4 route add 192.0.2.130/32 dev br1 + ip -6 route add 2001:db8:2::2/128 dev br1 + + vlan_create $h3 555 v$h3 192.0.2.130/28 2001:db8:2::2/64 + bridge vlan add dev $swp3 vid 555 +} + +cleanup() +{ + pre_cleanup + + ip link set dev $swp3 nomaster + vlan_destroy $h3 555 + + mirror_gre_topo_destroy + vrf_cleanup +} + +test_gretap() +{ + full_test_span_gre_dir gt4 ingress 8 0 "mirror to gretap" + full_test_span_gre_dir gt4 egress 0 8 "mirror to gretap" +} + +test_ip6gretap() +{ + full_test_span_gre_dir gt6 ingress 8 0 "mirror to ip6gretap" + full_test_span_gre_dir gt6 egress 0 8 "mirror to ip6gretap" +} + +tests() +{ + slow_path_trap_install $swp1 ingress + slow_path_trap_install $swp1 egress + + tests_run + + slow_path_trap_uninstall $swp1 egress + slow_path_trap_uninstall $swp1 ingress +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tcflags="skip_hw" +tests + +if ! tc_offload_check; then + echo "WARN: Could not test offloaded functionality" +else + tcflags="skip_sw" + tests +fi + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1q_lag.sh b/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1q_lag.sh new file mode 100755 index 000000000..61844caf6 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/mirror_gre_bridge_1q_lag.sh @@ -0,0 +1,283 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# Test for "tc action mirred egress mirror" when the underlay route points at a +# bridge device with vlan filtering (802.1q), and the egress device is a team +# device. +# +# +----------------------+ +----------------------+ +# | H1 | | H2 | +# | + $h1.333 | | $h1.555 + | +# | | 192.0.2.1/28 | | 192.0.2.18/28 | | +# +-----|----------------+ +----------------|-----+ +# | $h1 | +# +--------------------------------+------------------------------+ +# | +# +--------------------------------------|------------------------------------+ +# | SW o---> mirror | +# | | | +# | +--------------------------------+------------------------------+ | +# | | $swp1 | | +# | + $swp1.333 $swp1.555 + | +# | 192.0.2.2/28 192.0.2.17/28 | +# | | +# | +-----------------------------------------------------------------------+ | +# | | BR1 (802.1q) | | +# | | + lag (team) 192.0.2.129/28 | | +# | | / \ 2001:db8:2::1/64 | | +# | +---/---\---------------------------------------------------------------+ | +# | / \ ^ | +# | | \ + gt4 (gretap) | | +# | | \ loc=192.0.2.129 | | +# | | \ rem=192.0.2.130 -+ | +# | | \ ttl=100 | +# | | \ tos=inherit | +# | | \ | +# | | \_________________________________ | +# | | \ | +# | + $swp3 + $swp4 | +# +---|------------------------------------------------|----------------------+ +# | | +# +---|----------------------+ +---|----------------------+ +# | + $h3 H3 | | + $h4 H4 | +# | 192.0.2.130/28 | | 192.0.2.130/28 | +# | 2001:db8:2::2/64 | | 2001:db8:2::2/64 | +# +--------------------------+ +--------------------------+ + +ALL_TESTS=" + test_mirror_gretap_first + test_mirror_gretap_second +" + +NUM_NETIFS=6 +source lib.sh +source mirror_lib.sh +source mirror_gre_lib.sh + +require_command $ARPING + +vlan_host_create() +{ + local if_name=$1; shift + local vid=$1; shift + local vrf_name=$1; shift + local ips=("${@}") + + vrf_create $vrf_name + ip link set dev $vrf_name up + vlan_create $if_name $vid $vrf_name "${ips[@]}" +} + +vlan_host_destroy() +{ + local if_name=$1; shift + local vid=$1; shift + local vrf_name=$1; shift + + vlan_destroy $if_name $vid + ip link set dev $vrf_name down + vrf_destroy $vrf_name +} + +h1_create() +{ + vlan_host_create $h1 333 vrf-h1 192.0.2.1/28 + ip -4 route add 192.0.2.16/28 vrf vrf-h1 nexthop via 192.0.2.2 +} + +h1_destroy() +{ + ip -4 route del 192.0.2.16/28 vrf vrf-h1 + vlan_host_destroy $h1 333 vrf-h1 +} + +h2_create() +{ + vlan_host_create $h1 555 vrf-h2 192.0.2.18/28 + ip -4 route add 192.0.2.0/28 vrf vrf-h2 nexthop via 192.0.2.17 +} + +h2_destroy() +{ + ip -4 route del 192.0.2.0/28 vrf vrf-h2 + vlan_host_destroy $h1 555 vrf-h2 +} + +h3_create() +{ + simple_if_init $h3 192.0.2.130/28 + tc qdisc add dev $h3 clsact +} + +h3_destroy() +{ + tc qdisc del dev $h3 clsact + simple_if_fini $h3 192.0.2.130/28 +} + +h4_create() +{ + simple_if_init $h4 192.0.2.130/28 + tc qdisc add dev $h4 clsact +} + +h4_destroy() +{ + tc qdisc del dev $h4 clsact + simple_if_fini $h4 192.0.2.130/28 +} + +switch_create() +{ + ip link set dev $swp1 up + tc qdisc add dev $swp1 clsact + vlan_create $swp1 333 "" 192.0.2.2/28 + vlan_create $swp1 555 "" 192.0.2.17/28 + + tunnel_create gt4 gretap 192.0.2.129 192.0.2.130 \ + ttl 100 tos inherit + + ip link set dev $swp3 up + ip link set dev $swp4 up + + ip link add name br1 type bridge vlan_filtering 1 + ip link set dev br1 up + __addr_add_del br1 add 192.0.2.129/32 + ip -4 route add 192.0.2.130/32 dev br1 + + team_create lag loadbalance $swp3 $swp4 + ip link set dev lag master br1 +} + +switch_destroy() +{ + ip link set dev lag nomaster + team_destroy lag + + ip -4 route del 192.0.2.130/32 dev br1 + __addr_add_del br1 del 192.0.2.129/32 + ip link set dev br1 down + ip link del dev br1 + + ip link set dev $swp4 down + ip link set dev $swp3 down + + tunnel_destroy gt4 + + vlan_destroy $swp1 555 + vlan_destroy $swp1 333 + tc qdisc del dev $swp1 clsact + ip link set dev $swp1 down +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp3=${NETIFS[p3]} + h3=${NETIFS[p4]} + + swp4=${NETIFS[p5]} + h4=${NETIFS[p6]} + + vrf_prepare + + ip link set dev $h1 up + h1_create + h2_create + h3_create + h4_create + switch_create + + trap_install $h3 ingress + trap_install $h4 ingress +} + +cleanup() +{ + pre_cleanup + + trap_uninstall $h4 ingress + trap_uninstall $h3 ingress + + switch_destroy + h4_destroy + h3_destroy + h2_destroy + h1_destroy + ip link set dev $h1 down + + vrf_cleanup +} + +test_lag_slave() +{ + local host_dev=$1; shift + local up_dev=$1; shift + local down_dev=$1; shift + local what=$1; shift + + RET=0 + + mirror_install $swp1 ingress gt4 \ + "proto 802.1q flower vlan_id 333 $tcflags" + + # Test connectivity through $up_dev when $down_dev is set down. + ip link set dev $down_dev down + setup_wait_dev $up_dev + setup_wait_dev $host_dev + $ARPING -I br1 192.0.2.130 -qfc 1 + sleep 2 + mirror_test vrf-h1 192.0.2.1 192.0.2.18 $host_dev 1 10 + + # Test lack of connectivity when both slaves are down. + ip link set dev $up_dev down + sleep 2 + mirror_test vrf-h1 192.0.2.1 192.0.2.18 $h3 1 0 + mirror_test vrf-h1 192.0.2.1 192.0.2.18 $h4 1 0 + + ip link set dev $up_dev up + ip link set dev $down_dev up + mirror_uninstall $swp1 ingress + + log_test "$what ($tcflags)" +} + +test_mirror_gretap_first() +{ + test_lag_slave $h3 $swp3 $swp4 "mirror to gretap: LAG first slave" +} + +test_mirror_gretap_second() +{ + test_lag_slave $h4 $swp4 $swp3 "mirror to gretap: LAG second slave" +} + +test_all() +{ + slow_path_trap_install $swp1 ingress + slow_path_trap_install $swp1 egress + + tests_run + + slow_path_trap_uninstall $swp1 egress + slow_path_trap_uninstall $swp1 ingress +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tcflags="skip_hw" +test_all + +if ! tc_offload_check; then + echo "WARN: Could not test offloaded functionality" +else + tcflags="skip_sw" + test_all +fi + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_changes.sh b/tools/testing/selftests/net/forwarding/mirror_gre_changes.sh new file mode 100755 index 000000000..135902aa8 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/mirror_gre_changes.sh @@ -0,0 +1,271 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# This test uses standard topology for testing gretap. See +# mirror_gre_topo_lib.sh for more details. +# +# Test how mirrors to gretap and ip6gretap react to changes to relevant +# configuration. + +ALL_TESTS=" + test_ttl + test_tun_up + test_egress_up + test_remote_ip + test_tun_del + test_route_del +" + +NUM_NETIFS=6 +source lib.sh +source mirror_lib.sh +source mirror_gre_lib.sh +source mirror_gre_topo_lib.sh + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + swp3=${NETIFS[p5]} + h3=${NETIFS[p6]} + + vrf_prepare + mirror_gre_topo_create + + # This test downs $swp3, which deletes the configured IPv6 address + # unless this sysctl is set. + sysctl_set net.ipv6.conf.$swp3.keep_addr_on_down 1 + + ip address add dev $swp3 192.0.2.129/28 + ip address add dev $h3 192.0.2.130/28 + + ip address add dev $swp3 2001:db8:2::1/64 + ip address add dev $h3 2001:db8:2::2/64 +} + +cleanup() +{ + pre_cleanup + + ip address del dev $h3 2001:db8:2::2/64 + ip address del dev $swp3 2001:db8:2::1/64 + + ip address del dev $h3 192.0.2.130/28 + ip address del dev $swp3 192.0.2.129/28 + + sysctl_restore net.ipv6.conf.$swp3.keep_addr_on_down + + mirror_gre_topo_destroy + vrf_cleanup +} + +test_span_gre_ttl() +{ + local tundev=$1; shift + local type=$1; shift + local prot=$1; shift + local what=$1; shift + + RET=0 + + mirror_install $swp1 ingress $tundev "matchall $tcflags" + tc filter add dev $h3 ingress pref 77 prot $prot \ + flower ip_ttl 50 action pass + + mirror_test v$h1 192.0.2.1 192.0.2.2 $h3 77 0 + + ip link set dev $tundev type $type ttl 50 + mirror_test v$h1 192.0.2.1 192.0.2.2 $h3 77 10 + + ip link set dev $tundev type $type ttl 100 + tc filter del dev $h3 ingress pref 77 + mirror_uninstall $swp1 ingress + + log_test "$what: TTL change ($tcflags)" +} + +test_span_gre_tun_up() +{ + local tundev=$1; shift + local what=$1; shift + + RET=0 + + ip link set dev $tundev down + mirror_install $swp1 ingress $tundev "matchall $tcflags" + fail_test_span_gre_dir $tundev ingress + + ip link set dev $tundev up + + quick_test_span_gre_dir $tundev ingress + mirror_uninstall $swp1 ingress + + log_test "$what: tunnel down/up ($tcflags)" +} + +test_span_gre_egress_up() +{ + local tundev=$1; shift + local remote_ip=$1; shift + local what=$1; shift + + RET=0 + + ip link set dev $swp3 down + mirror_install $swp1 ingress $tundev "matchall $tcflags" + fail_test_span_gre_dir $tundev ingress + + # After setting the device up, wait for neighbor to get resolved so that + # we can expect mirroring to work. + ip link set dev $swp3 up + setup_wait_dev $swp3 + ping -c 1 -I $swp3 $remote_ip &>/dev/null + + quick_test_span_gre_dir $tundev ingress + mirror_uninstall $swp1 ingress + + log_test "$what: egress down/up ($tcflags)" +} + +test_span_gre_remote_ip() +{ + local tundev=$1; shift + local type=$1; shift + local correct_ip=$1; shift + local wrong_ip=$1; shift + local what=$1; shift + + RET=0 + + ip link set dev $tundev type $type remote $wrong_ip + mirror_install $swp1 ingress $tundev "matchall $tcflags" + fail_test_span_gre_dir $tundev ingress + + ip link set dev $tundev type $type remote $correct_ip + quick_test_span_gre_dir $tundev ingress + mirror_uninstall $swp1 ingress + + log_test "$what: remote address change ($tcflags)" +} + +test_span_gre_tun_del() +{ + local tundev=$1; shift + local type=$1; shift + local flags=$1; shift + local local_ip=$1; shift + local remote_ip=$1; shift + local what=$1; shift + + RET=0 + + mirror_install $swp1 ingress $tundev "matchall $tcflags" + quick_test_span_gre_dir $tundev ingress + ip link del dev $tundev + fail_test_span_gre_dir $tundev ingress + + tunnel_create $tundev $type $local_ip $remote_ip \ + ttl 100 tos inherit $flags + + # Recreating the tunnel doesn't reestablish mirroring, so reinstall it + # and verify it works for the follow-up tests. + mirror_uninstall $swp1 ingress + mirror_install $swp1 ingress $tundev "matchall $tcflags" + quick_test_span_gre_dir $tundev ingress + mirror_uninstall $swp1 ingress + + log_test "$what: tunnel deleted ($tcflags)" +} + +test_span_gre_route_del() +{ + local tundev=$1; shift + local edev=$1; shift + local route=$1; shift + local what=$1; shift + + RET=0 + + mirror_install $swp1 ingress $tundev "matchall $tcflags" + quick_test_span_gre_dir $tundev ingress + + ip route del $route dev $edev + fail_test_span_gre_dir $tundev ingress + + ip route add $route dev $edev + quick_test_span_gre_dir $tundev ingress + + mirror_uninstall $swp1 ingress + + log_test "$what: underlay route removal ($tcflags)" +} + +test_ttl() +{ + test_span_gre_ttl gt4 gretap ip "mirror to gretap" + test_span_gre_ttl gt6 ip6gretap ipv6 "mirror to ip6gretap" +} + +test_tun_up() +{ + test_span_gre_tun_up gt4 "mirror to gretap" + test_span_gre_tun_up gt6 "mirror to ip6gretap" +} + +test_egress_up() +{ + test_span_gre_egress_up gt4 192.0.2.130 "mirror to gretap" + test_span_gre_egress_up gt6 2001:db8:2::2 "mirror to ip6gretap" +} + +test_remote_ip() +{ + test_span_gre_remote_ip gt4 gretap 192.0.2.130 192.0.2.132 "mirror to gretap" + test_span_gre_remote_ip gt6 ip6gretap 2001:db8:2::2 2001:db8:2::4 "mirror to ip6gretap" +} + +test_tun_del() +{ + test_span_gre_tun_del gt4 gretap "" \ + 192.0.2.129 192.0.2.130 "mirror to gretap" + test_span_gre_tun_del gt6 ip6gretap allow-localremote \ + 2001:db8:2::1 2001:db8:2::2 "mirror to ip6gretap" +} + +test_route_del() +{ + test_span_gre_route_del gt4 $swp3 192.0.2.128/28 "mirror to gretap" + test_span_gre_route_del gt6 $swp3 2001:db8:2::/64 "mirror to ip6gretap" +} + +test_all() +{ + slow_path_trap_install $swp1 ingress + slow_path_trap_install $swp1 egress + + tests_run + + slow_path_trap_uninstall $swp1 egress + slow_path_trap_uninstall $swp1 ingress +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tcflags="skip_hw" +test_all + +if ! tc_offload_check; then + echo "WARN: Could not test offloaded functionality" +else + tcflags="skip_sw" + test_all +fi + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_flower.sh b/tools/testing/selftests/net/forwarding/mirror_gre_flower.sh new file mode 100755 index 000000000..12914f406 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/mirror_gre_flower.sh @@ -0,0 +1,137 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# This test uses standard topology for testing gretap. See +# mirror_gre_topo_lib.sh for more details. +# +# This tests flower-triggered mirroring to gretap and ip6gretap netdevices. The +# interfaces on H1 and H2 have two addresses each. Flower match on one of the +# addresses is configured with mirror action. It is expected that when pinging +# this address, mirroring takes place, whereas when pinging the other one, +# there's no mirroring. + +ALL_TESTS=" + test_gretap + test_ip6gretap +" + +NUM_NETIFS=6 +source lib.sh +source mirror_lib.sh +source mirror_gre_lib.sh +source mirror_gre_topo_lib.sh + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + swp3=${NETIFS[p5]} + h3=${NETIFS[p6]} + + vrf_prepare + mirror_gre_topo_create + + ip address add dev $swp3 192.0.2.129/28 + ip address add dev $h3 192.0.2.130/28 + + ip address add dev $swp3 2001:db8:2::1/64 + ip address add dev $h3 2001:db8:2::2/64 + + ip address add dev $h1 192.0.2.3/28 + ip address add dev $h2 192.0.2.4/28 +} + +cleanup() +{ + pre_cleanup + + ip address del dev $h2 192.0.2.4/28 + ip address del dev $h1 192.0.2.3/28 + + ip address del dev $h3 2001:db8:2::2/64 + ip address del dev $swp3 2001:db8:2::1/64 + + ip address del dev $h3 192.0.2.130/28 + ip address del dev $swp3 192.0.2.129/28 + + mirror_gre_topo_destroy + vrf_cleanup +} + +test_span_gre_dir_acl() +{ + test_span_gre_dir_ips "$@" 192.0.2.3 192.0.2.4 +} + +fail_test_span_gre_dir_acl() +{ + fail_test_span_gre_dir_ips "$@" 192.0.2.3 192.0.2.4 +} + +full_test_span_gre_dir_acl() +{ + local tundev=$1; shift + local direction=$1; shift + local forward_type=$1; shift + local backward_type=$1; shift + local match_dip=$1; shift + local what=$1; shift + + mirror_install $swp1 $direction $tundev \ + "protocol ip flower $tcflags dst_ip $match_dip" + fail_test_span_gre_dir $tundev $direction + test_span_gre_dir_acl "$tundev" "$direction" \ + "$forward_type" "$backward_type" + mirror_uninstall $swp1 $direction + + # Test lack of mirroring after ACL mirror is uninstalled. + fail_test_span_gre_dir_acl "$tundev" "$direction" + + log_test "$direction $what ($tcflags)" +} + +test_gretap() +{ + full_test_span_gre_dir_acl gt4 ingress 8 0 192.0.2.4 "ACL mirror to gretap" + full_test_span_gre_dir_acl gt4 egress 0 8 192.0.2.3 "ACL mirror to gretap" +} + +test_ip6gretap() +{ + full_test_span_gre_dir_acl gt6 ingress 8 0 192.0.2.4 "ACL mirror to ip6gretap" + full_test_span_gre_dir_acl gt6 egress 0 8 192.0.2.3 "ACL mirror to ip6gretap" +} + +test_all() +{ + RET=0 + + slow_path_trap_install $swp1 ingress + slow_path_trap_install $swp1 egress + + tests_run + + slow_path_trap_uninstall $swp1 egress + slow_path_trap_uninstall $swp1 ingress +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tcflags="skip_hw" +test_all + +if ! tc_offload_check; then + echo "WARN: Could not test offloaded functionality" +else + tcflags="skip_sw" + test_all +fi + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_lag_lacp.sh b/tools/testing/selftests/net/forwarding/mirror_gre_lag_lacp.sh new file mode 100755 index 000000000..9edf4cb10 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/mirror_gre_lag_lacp.sh @@ -0,0 +1,285 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# Test for "tc action mirred egress mirror" when the underlay route points at a +# team device. +# +# +----------------------+ +----------------------+ +# | H1 | | H2 | +# | + $h1.333 | | $h1.555 + | +# | | 192.0.2.1/28 | | 192.0.2.18/28 | | +# +----|-----------------+ +----------------|-----+ +# | $h1 | +# +---------------------------------+------------------------------+ +# | +# +--------------------------------------|------------------------------------+ +# | SW o---> mirror | +# | | | +# | +----------------------------------+------------------------------+ | +# | | $swp1 | | +# | + $swp1.333 $swp1.555 + | +# | 192.0.2.2/28 192.0.2.17/28 | +# | | +# | | +# | + gt4 (gretap) ,-> + lag1 (team) | +# | loc=192.0.2.129 | | 192.0.2.129/28 | +# | rem=192.0.2.130 --' | | +# | ttl=100 | | +# | tos=inherit | | +# | _____________________|______________________ | +# | / \ | +# | / \ | +# | + $swp3 + $swp4 | +# +---|------------------------------------------------|----------------------+ +# | | +# +---|------------------------------------------------|----------------------+ +# | + $h3 + $h4 H3 | +# | \ / | +# | \____________________________________________/ | +# | | | +# | + lag2 (team) | +# | 192.0.2.130/28 | +# | | +# +---------------------------------------------------------------------------+ + +ALL_TESTS=" + test_mirror_gretap_first + test_mirror_gretap_second +" + +NUM_NETIFS=6 +source lib.sh +source mirror_lib.sh +source mirror_gre_lib.sh + +require_command $ARPING + +vlan_host_create() +{ + local if_name=$1; shift + local vid=$1; shift + local vrf_name=$1; shift + local ips=("${@}") + + vrf_create $vrf_name + ip link set dev $vrf_name up + vlan_create $if_name $vid $vrf_name "${ips[@]}" +} + +vlan_host_destroy() +{ + local if_name=$1; shift + local vid=$1; shift + local vrf_name=$1; shift + + vlan_destroy $if_name $vid + ip link set dev $vrf_name down + vrf_destroy $vrf_name +} + +h1_create() +{ + vlan_host_create $h1 333 vrf-h1 192.0.2.1/28 + ip -4 route add 192.0.2.16/28 vrf vrf-h1 nexthop via 192.0.2.2 +} + +h1_destroy() +{ + ip -4 route del 192.0.2.16/28 vrf vrf-h1 + vlan_host_destroy $h1 333 vrf-h1 +} + +h2_create() +{ + vlan_host_create $h1 555 vrf-h2 192.0.2.18/28 + ip -4 route add 192.0.2.0/28 vrf vrf-h2 nexthop via 192.0.2.17 +} + +h2_destroy() +{ + ip -4 route del 192.0.2.0/28 vrf vrf-h2 + vlan_host_destroy $h1 555 vrf-h2 +} + +h3_create_team() +{ + team_create lag2 lacp $h3 $h4 + __simple_if_init lag2 vrf-h3 192.0.2.130/32 + ip -4 route add vrf vrf-h3 192.0.2.129/32 dev lag2 +} + +h3_destroy_team() +{ + ip -4 route del vrf vrf-h3 192.0.2.129/32 dev lag2 + __simple_if_fini lag2 192.0.2.130/32 + team_destroy lag2 + + ip link set dev $h3 down + ip link set dev $h4 down +} + +h3_create() +{ + vrf_create vrf-h3 + ip link set dev vrf-h3 up + tc qdisc add dev $h3 clsact + tc qdisc add dev $h4 clsact + h3_create_team +} + +h3_destroy() +{ + h3_destroy_team + tc qdisc del dev $h4 clsact + tc qdisc del dev $h3 clsact + ip link set dev vrf-h3 down + vrf_destroy vrf-h3 +} + +switch_create() +{ + ip link set dev $swp1 up + tc qdisc add dev $swp1 clsact + vlan_create $swp1 333 "" 192.0.2.2/28 + vlan_create $swp1 555 "" 192.0.2.17/28 + + tunnel_create gt4 gretap 192.0.2.129 192.0.2.130 \ + ttl 100 tos inherit + + ip link set dev $swp3 up + ip link set dev $swp4 up + team_create lag1 lacp $swp3 $swp4 + __addr_add_del lag1 add 192.0.2.129/32 + ip -4 route add 192.0.2.130/32 dev lag1 +} + +switch_destroy() +{ + ip -4 route del 192.0.2.130/32 dev lag1 + __addr_add_del lag1 del 192.0.2.129/32 + team_destroy lag1 + + ip link set dev $swp4 down + ip link set dev $swp3 down + + tunnel_destroy gt4 + + vlan_destroy $swp1 555 + vlan_destroy $swp1 333 + tc qdisc del dev $swp1 clsact + ip link set dev $swp1 down +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp3=${NETIFS[p3]} + h3=${NETIFS[p4]} + + swp4=${NETIFS[p5]} + h4=${NETIFS[p6]} + + vrf_prepare + + ip link set dev $h1 up + h1_create + h2_create + h3_create + switch_create + + trap_install $h3 ingress + trap_install $h4 ingress +} + +cleanup() +{ + pre_cleanup + + trap_uninstall $h4 ingress + trap_uninstall $h3 ingress + + switch_destroy + h3_destroy + h2_destroy + h1_destroy + ip link set dev $h1 down + + vrf_cleanup +} + +test_lag_slave() +{ + local up_dev=$1; shift + local down_dev=$1; shift + local what=$1; shift + + RET=0 + + mirror_install $swp1 ingress gt4 \ + "proto 802.1q flower vlan_id 333 $tcflags" + + # Move $down_dev away from the team. That will prompt change in + # txability of the connected device, without changing its upness. The + # driver should notice the txability change and move the traffic to the + # other slave. + ip link set dev $down_dev nomaster + sleep 2 + mirror_test vrf-h1 192.0.2.1 192.0.2.18 $up_dev 1 10 + + # Test lack of connectivity when neither slave is txable. + ip link set dev $up_dev nomaster + sleep 2 + mirror_test vrf-h1 192.0.2.1 192.0.2.18 $h3 1 0 + mirror_test vrf-h1 192.0.2.1 192.0.2.18 $h4 1 0 + mirror_uninstall $swp1 ingress + + # Recreate H3's team device, because mlxsw, which this test is + # predominantly mean to test, requires a bottom-up construction and + # doesn't allow enslavement to a device that already has an upper. + h3_destroy_team + h3_create_team + # Wait for ${h,swp}{3,4}. + setup_wait + + log_test "$what ($tcflags)" +} + +test_mirror_gretap_first() +{ + test_lag_slave $h3 $h4 "mirror to gretap: LAG first slave" +} + +test_mirror_gretap_second() +{ + test_lag_slave $h4 $h3 "mirror to gretap: LAG second slave" +} + +test_all() +{ + slow_path_trap_install $swp1 ingress + slow_path_trap_install $swp1 egress + + tests_run + + slow_path_trap_uninstall $swp1 egress + slow_path_trap_uninstall $swp1 ingress +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tcflags="skip_hw" +test_all + +if ! tc_offload_check; then + echo "WARN: Could not test offloaded functionality" +else + tcflags="skip_sw" + test_all +fi + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_lib.sh b/tools/testing/selftests/net/forwarding/mirror_gre_lib.sh new file mode 100644 index 000000000..fac486178 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/mirror_gre_lib.sh @@ -0,0 +1,130 @@ +# SPDX-License-Identifier: GPL-2.0 + +source "$relative_path/mirror_lib.sh" + +quick_test_span_gre_dir_ips() +{ + local tundev=$1; shift + + do_test_span_dir_ips 10 h3-$tundev "$@" +} + +fail_test_span_gre_dir_ips() +{ + local tundev=$1; shift + + do_test_span_dir_ips 0 h3-$tundev "$@" +} + +test_span_gre_dir_ips() +{ + local tundev=$1; shift + + test_span_dir_ips h3-$tundev "$@" +} + +full_test_span_gre_dir_ips() +{ + local tundev=$1; shift + local direction=$1; shift + local forward_type=$1; shift + local backward_type=$1; shift + local what=$1; shift + local ip1=$1; shift + local ip2=$1; shift + + RET=0 + + mirror_install $swp1 $direction $tundev "matchall $tcflags" + test_span_dir_ips "h3-$tundev" "$direction" "$forward_type" \ + "$backward_type" "$ip1" "$ip2" + mirror_uninstall $swp1 $direction + + log_test "$direction $what ($tcflags)" +} + +full_test_span_gre_dir_vlan_ips() +{ + local tundev=$1; shift + local direction=$1; shift + local vlan_match=$1; shift + local forward_type=$1; shift + local backward_type=$1; shift + local what=$1; shift + local ip1=$1; shift + local ip2=$1; shift + + RET=0 + + mirror_install $swp1 $direction $tundev "matchall $tcflags" + + test_span_dir_ips "h3-$tundev" "$direction" "$forward_type" \ + "$backward_type" "$ip1" "$ip2" + + tc filter add dev $h3 ingress pref 77 prot 802.1q \ + flower $vlan_match \ + action pass + mirror_test v$h1 $ip1 $ip2 $h3 77 10 + tc filter del dev $h3 ingress pref 77 + + mirror_uninstall $swp1 $direction + + log_test "$direction $what ($tcflags)" +} + +quick_test_span_gre_dir() +{ + quick_test_span_gre_dir_ips "$@" 192.0.2.1 192.0.2.2 +} + +fail_test_span_gre_dir() +{ + fail_test_span_gre_dir_ips "$@" 192.0.2.1 192.0.2.2 +} + +test_span_gre_dir() +{ + test_span_gre_dir_ips "$@" 192.0.2.1 192.0.2.2 +} + +full_test_span_gre_dir() +{ + full_test_span_gre_dir_ips "$@" 192.0.2.1 192.0.2.2 +} + +full_test_span_gre_dir_vlan() +{ + full_test_span_gre_dir_vlan_ips "$@" 192.0.2.1 192.0.2.2 +} + +full_test_span_gre_stp_ips() +{ + local tundev=$1; shift + local nbpdev=$1; shift + local what=$1; shift + local ip1=$1; shift + local ip2=$1; shift + local h3mac=$(mac_get $h3) + + RET=0 + + mirror_install $swp1 ingress $tundev "matchall $tcflags" + quick_test_span_gre_dir_ips $tundev ingress $ip1 $ip2 + + bridge link set dev $nbpdev state disabled + sleep 1 + fail_test_span_gre_dir_ips $tundev ingress $ip1 $ip2 + + bridge link set dev $nbpdev state forwarding + sleep 1 + quick_test_span_gre_dir_ips $tundev ingress $ip1 $ip2 + + mirror_uninstall $swp1 ingress + + log_test "$what: STP state ($tcflags)" +} + +full_test_span_gre_stp() +{ + full_test_span_gre_stp_ips "$@" 192.0.2.1 192.0.2.2 +} diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_neigh.sh b/tools/testing/selftests/net/forwarding/mirror_gre_neigh.sh new file mode 100755 index 000000000..fc0508e40 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/mirror_gre_neigh.sh @@ -0,0 +1,115 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# This test uses standard topology for testing gretap. See +# mirror_gre_topo_lib.sh for more details. +# +# Test for mirroring to gretap and ip6gretap, such that the neighbor entry for +# the tunnel remote address has invalid address at the time that the mirroring +# is set up. Later on, the neighbor is deleted and it is expected to be +# reinitialized using the usual ARP process, and the mirroring offload updated. + +ALL_TESTS=" + test_gretap + test_ip6gretap +" + +NUM_NETIFS=6 +source lib.sh +source mirror_lib.sh +source mirror_gre_lib.sh +source mirror_gre_topo_lib.sh + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + swp3=${NETIFS[p5]} + h3=${NETIFS[p6]} + + vrf_prepare + mirror_gre_topo_create + + ip address add dev $swp3 192.0.2.129/28 + ip address add dev $h3 192.0.2.130/28 + + ip address add dev $swp3 2001:db8:2::1/64 + ip address add dev $h3 2001:db8:2::2/64 +} + +cleanup() +{ + pre_cleanup + + ip address del dev $h3 2001:db8:2::2/64 + ip address del dev $swp3 2001:db8:2::1/64 + + ip address del dev $h3 192.0.2.130/28 + ip address del dev $swp3 192.0.2.129/28 + + mirror_gre_topo_destroy + vrf_cleanup +} + +test_span_gre_neigh() +{ + local addr=$1; shift + local tundev=$1; shift + local direction=$1; shift + local what=$1; shift + + RET=0 + + ip neigh replace dev $swp3 $addr lladdr 00:11:22:33:44:55 + mirror_install $swp1 $direction $tundev "matchall $tcflags" + fail_test_span_gre_dir $tundev ingress + ip neigh del dev $swp3 $addr + quick_test_span_gre_dir $tundev ingress + mirror_uninstall $swp1 $direction + + log_test "$direction $what: neighbor change ($tcflags)" +} + +test_gretap() +{ + test_span_gre_neigh 192.0.2.130 gt4 ingress "mirror to gretap" + test_span_gre_neigh 192.0.2.130 gt4 egress "mirror to gretap" +} + +test_ip6gretap() +{ + test_span_gre_neigh 2001:db8:2::2 gt6 ingress "mirror to ip6gretap" + test_span_gre_neigh 2001:db8:2::2 gt6 egress "mirror to ip6gretap" +} + +test_all() +{ + slow_path_trap_install $swp1 ingress + slow_path_trap_install $swp1 egress + + tests_run + + slow_path_trap_uninstall $swp1 egress + slow_path_trap_uninstall $swp1 ingress +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tcflags="skip_hw" +test_all + +if ! tc_offload_check; then + echo "WARN: Could not test offloaded functionality" +else + tcflags="skip_sw" + test_all +fi + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_nh.sh b/tools/testing/selftests/net/forwarding/mirror_gre_nh.sh new file mode 100755 index 000000000..6f9ef1820 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/mirror_gre_nh.sh @@ -0,0 +1,131 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# This test uses standard topology for testing gretap. See +# mirror_gre_topo_lib.sh for more details. +# +# Test that gretap and ip6gretap mirroring works when the other tunnel endpoint +# is reachable through a next-hop route (as opposed to directly-attached route). + +ALL_TESTS=" + test_gretap + test_ip6gretap +" + +NUM_NETIFS=6 +source lib.sh +source mirror_lib.sh +source mirror_gre_lib.sh +source mirror_gre_topo_lib.sh + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + swp3=${NETIFS[p5]} + h3=${NETIFS[p6]} + + sysctl_set net.ipv4.conf.all.rp_filter 0 + sysctl_set net.ipv4.conf.$h3.rp_filter 0 + + vrf_prepare + mirror_gre_topo_create + + sysctl_set net.ipv4.conf.v$h3.rp_filter 0 + + ip address add dev $swp3 192.0.2.161/28 + ip address add dev $h3 192.0.2.162/28 + ip address add dev gt4 192.0.2.129/32 + ip address add dev h3-gt4 192.0.2.130/32 + + # IPv6 route can't be added after address. Such routes are rejected due + # to the gateway address having been configured on the local system. It + # works the other way around though. + ip address add dev $swp3 2001:db8:4::1/64 + ip -6 route add 2001:db8:2::2/128 via 2001:db8:4::2 + ip address add dev $h3 2001:db8:4::2/64 + ip address add dev gt6 2001:db8:2::1 + ip address add dev h3-gt6 2001:db8:2::2 +} + +cleanup() +{ + pre_cleanup + + ip -6 route del 2001:db8:2::2/128 via 2001:db8:4::2 + ip address del dev $h3 2001:db8:4::2/64 + ip address del dev $swp3 2001:db8:4::1/64 + + ip address del dev $h3 192.0.2.162/28 + ip address del dev $swp3 192.0.2.161/28 + + sysctl_restore net.ipv4.conf.v$h3.rp_filter 0 + + mirror_gre_topo_destroy + vrf_cleanup + + sysctl_restore net.ipv4.conf.$h3.rp_filter + sysctl_restore net.ipv4.conf.all.rp_filter +} + +test_gretap() +{ + RET=0 + mirror_install $swp1 ingress gt4 "matchall $tcflags" + + # For IPv4, test that there's no mirroring without the route directing + # the traffic to tunnel remote address. Then add it and test that + # mirroring starts. For IPv6 we can't test this due to the limitation + # that routes for locally-specified IPv6 addresses can't be added. + fail_test_span_gre_dir gt4 ingress + + ip route add 192.0.2.130/32 via 192.0.2.162 + quick_test_span_gre_dir gt4 ingress + ip route del 192.0.2.130/32 via 192.0.2.162 + + mirror_uninstall $swp1 ingress + log_test "mirror to gre with next-hop remote ($tcflags)" +} + +test_ip6gretap() +{ + RET=0 + + mirror_install $swp1 ingress gt6 "matchall $tcflags" + quick_test_span_gre_dir gt6 ingress + mirror_uninstall $swp1 ingress + + log_test "mirror to ip6gre with next-hop remote ($tcflags)" +} + +test_all() +{ + slow_path_trap_install $swp1 ingress + slow_path_trap_install $swp1 egress + + tests_run + + slow_path_trap_uninstall $swp1 egress + slow_path_trap_uninstall $swp1 ingress +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tcflags="skip_hw" +test_all + +if ! tc_offload_check; then + echo "WARN: Could not test offloaded functionality" +else + tcflags="skip_sw" + test_all +fi + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_topo_lib.sh b/tools/testing/selftests/net/forwarding/mirror_gre_topo_lib.sh new file mode 100644 index 000000000..39c03e286 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/mirror_gre_topo_lib.sh @@ -0,0 +1,94 @@ +# SPDX-License-Identifier: GPL-2.0 + +# This is the standard topology for testing mirroring to gretap and ip6gretap +# netdevices. The tests that use it tweak it in one way or another--importantly, +# $swp3 and $h3 need to have addresses set up. +# +# +---------------------+ +---------------------+ +# | H1 | | H2 | +# | + $h1 | | $h2 + | +# | | 192.0.2.1/28 | | 192.0.2.2/28 | | +# +-----|---------------+ +---------------|-----+ +# | | +# +-----|-------------------------------------------------------------|-----+ +# | SW o--> mirror | | +# | +---|-------------------------------------------------------------|---+ | +# | | + $swp1 BR $swp2 + | | +# | +---------------------------------------------------------------------+ | +# | | +# | + $swp3 + gt6 (ip6gretap) + gt4 (gretap) | +# | | : loc=2001:db8:2::1 : loc=192.0.2.129 | +# | | : rem=2001:db8:2::2 : rem=192.0.2.130 | +# | | : ttl=100 : ttl=100 | +# | | : tos=inherit : tos=inherit | +# | | : : | +# +-----|---------------------:----------------------:----------------------+ +# | : : +# +-----|---------------------:----------------------:----------------------+ +# | H3 + $h3 + h3-gt6 (ip6gretap) + h3-gt4 (gretap) | +# | loc=2001:db8:2::2 loc=192.0.2.130 | +# | rem=2001:db8:2::1 rem=192.0.2.129 | +# | ttl=100 ttl=100 | +# | tos=inherit tos=inherit | +# | | +# +-------------------------------------------------------------------------+ + +source "$relative_path/mirror_topo_lib.sh" + +mirror_gre_topo_h3_create() +{ + mirror_topo_h3_create + + tunnel_create h3-gt4 gretap 192.0.2.130 192.0.2.129 + ip link set h3-gt4 vrf v$h3 + matchall_sink_create h3-gt4 + + tunnel_create h3-gt6 ip6gretap 2001:db8:2::2 2001:db8:2::1 + ip link set h3-gt6 vrf v$h3 + matchall_sink_create h3-gt6 +} + +mirror_gre_topo_h3_destroy() +{ + tunnel_destroy h3-gt6 + tunnel_destroy h3-gt4 + + mirror_topo_h3_destroy +} + +mirror_gre_topo_switch_create() +{ + mirror_topo_switch_create + + tunnel_create gt4 gretap 192.0.2.129 192.0.2.130 \ + ttl 100 tos inherit + + tunnel_create gt6 ip6gretap 2001:db8:2::1 2001:db8:2::2 \ + ttl 100 tos inherit allow-localremote +} + +mirror_gre_topo_switch_destroy() +{ + tunnel_destroy gt6 + tunnel_destroy gt4 + + mirror_topo_switch_destroy +} + +mirror_gre_topo_create() +{ + mirror_topo_h1_create + mirror_topo_h2_create + mirror_gre_topo_h3_create + + mirror_gre_topo_switch_create +} + +mirror_gre_topo_destroy() +{ + mirror_gre_topo_switch_destroy + + mirror_gre_topo_h3_destroy + mirror_topo_h2_destroy + mirror_topo_h1_destroy +} diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_vlan.sh b/tools/testing/selftests/net/forwarding/mirror_gre_vlan.sh new file mode 100755 index 000000000..88cecdb9a --- /dev/null +++ b/tools/testing/selftests/net/forwarding/mirror_gre_vlan.sh @@ -0,0 +1,92 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# This test uses standard topology for testing gretap. See +# mirror_gre_topo_lib.sh for more details. +# +# Test for "tc action mirred egress mirror" that mirrors to a gretap netdevice +# whose underlay route points at a vlan device. + +ALL_TESTS=" + test_gretap +" + +NUM_NETIFS=6 +source lib.sh +source mirror_lib.sh +source mirror_gre_lib.sh +source mirror_gre_topo_lib.sh + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + swp3=${NETIFS[p5]} + h3=${NETIFS[p6]} + + vrf_prepare + mirror_gre_topo_create + + ip link add name $swp3.555 link $swp3 type vlan id 555 + ip address add dev $swp3.555 192.0.2.129/32 + ip address add dev $swp3.555 2001:db8:2::1/128 + ip link set dev $swp3.555 up + + ip route add 192.0.2.130/32 dev $swp3.555 + ip -6 route add 2001:db8:2::2/128 dev $swp3.555 + + ip link add name $h3.555 link $h3 type vlan id 555 + ip link set dev $h3.555 master v$h3 + ip address add dev $h3.555 192.0.2.130/28 + ip address add dev $h3.555 2001:db8:2::2/64 + ip link set dev $h3.555 up +} + +cleanup() +{ + pre_cleanup + + ip link del dev $h3.555 + ip link del dev $swp3.555 + + mirror_gre_topo_destroy + vrf_cleanup +} + +test_gretap() +{ + full_test_span_gre_dir gt4 ingress 8 0 "mirror to gretap" + full_test_span_gre_dir gt4 egress 0 8 "mirror to gretap" +} + +test_all() +{ + slow_path_trap_install $swp1 ingress + slow_path_trap_install $swp1 egress + + tests_run + + slow_path_trap_uninstall $swp1 egress + slow_path_trap_uninstall $swp1 ingress +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tcflags="skip_hw" +test_all + +if ! tc_offload_check; then + echo "WARN: Could not test offloaded functionality" +else + tcflags="skip_sw" + test_all +fi + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh b/tools/testing/selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh new file mode 100755 index 000000000..204b25f13 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh @@ -0,0 +1,283 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# This test uses standard topology for testing gretap. See +# mirror_gre_topo_lib.sh for more details. +# +# Test for "tc action mirred egress mirror" when the underlay route points at a +# vlan device on top of a bridge device with vlan filtering (802.1q). + +ALL_TESTS=" + test_gretap + test_ip6gretap + test_gretap_forbidden_cpu + test_ip6gretap_forbidden_cpu + test_gretap_forbidden_egress + test_ip6gretap_forbidden_egress + test_gretap_untagged_egress + test_ip6gretap_untagged_egress + test_gretap_fdb_roaming + test_ip6gretap_fdb_roaming + test_gretap_stp + test_ip6gretap_stp +" + +NUM_NETIFS=6 +source lib.sh +source mirror_lib.sh +source mirror_gre_lib.sh +source mirror_gre_topo_lib.sh + +require_command $ARPING + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + swp3=${NETIFS[p5]} + h3=${NETIFS[p6]} + + # gt4's remote address is at $h3.555, not $h3. Thus the packets arriving + # directly to $h3 for test_gretap_untagged_egress() are rejected by + # rp_filter and the test spuriously fails. + sysctl_set net.ipv4.conf.all.rp_filter 0 + sysctl_set net.ipv4.conf.$h3.rp_filter 0 + + vrf_prepare + mirror_gre_topo_create + + vlan_create br1 555 "" 192.0.2.129/32 2001:db8:2::1/128 + bridge vlan add dev br1 vid 555 self + ip route rep 192.0.2.130/32 dev br1.555 + ip -6 route rep 2001:db8:2::2/128 dev br1.555 + + vlan_create $h3 555 v$h3 192.0.2.130/28 2001:db8:2::2/64 + + ip link set dev $swp3 master br1 + bridge vlan add dev $swp3 vid 555 + bridge vlan add dev $swp2 vid 555 +} + +cleanup() +{ + pre_cleanup + + ip link set dev $swp2 nomaster + ip link set dev $swp3 nomaster + vlan_destroy $h3 555 + vlan_destroy br1 555 + + mirror_gre_topo_destroy + vrf_cleanup + + sysctl_restore net.ipv4.conf.$h3.rp_filter + sysctl_restore net.ipv4.conf.all.rp_filter +} + +test_vlan_match() +{ + local tundev=$1; shift + local vlan_match=$1; shift + local what=$1; shift + + full_test_span_gre_dir_vlan $tundev ingress "$vlan_match" 8 0 "$what" + full_test_span_gre_dir_vlan $tundev egress "$vlan_match" 0 8 "$what" +} + +test_gretap() +{ + test_vlan_match gt4 'skip_hw vlan_id 555 vlan_ethtype ip' \ + "mirror to gretap" +} + +test_ip6gretap() +{ + test_vlan_match gt6 'skip_hw vlan_id 555 vlan_ethtype ip' \ + "mirror to ip6gretap" +} + +test_span_gre_forbidden_cpu() +{ + local tundev=$1; shift + local what=$1; shift + + RET=0 + + # Run the pass-test first, to prime neighbor table. + mirror_install $swp1 ingress $tundev "matchall $tcflags" + quick_test_span_gre_dir $tundev ingress + + # Now forbid the VLAN at the bridge and see it fail. + bridge vlan del dev br1 vid 555 self + sleep 1 + fail_test_span_gre_dir $tundev ingress + + bridge vlan add dev br1 vid 555 self + sleep 1 + quick_test_span_gre_dir $tundev ingress + + mirror_uninstall $swp1 ingress + + log_test "$what: vlan forbidden at a bridge ($tcflags)" +} + +test_gretap_forbidden_cpu() +{ + test_span_gre_forbidden_cpu gt4 "mirror to gretap" +} + +test_ip6gretap_forbidden_cpu() +{ + test_span_gre_forbidden_cpu gt6 "mirror to ip6gretap" +} + +test_span_gre_forbidden_egress() +{ + local tundev=$1; shift + local what=$1; shift + + RET=0 + + mirror_install $swp1 ingress $tundev "matchall $tcflags" + quick_test_span_gre_dir $tundev ingress + + bridge vlan del dev $swp3 vid 555 + sleep 1 + fail_test_span_gre_dir $tundev ingress + + bridge vlan add dev $swp3 vid 555 + # Re-prime FDB + $ARPING -I br1.555 192.0.2.130 -fqc 1 + sleep 1 + quick_test_span_gre_dir $tundev ingress + + mirror_uninstall $swp1 ingress + + log_test "$what: vlan forbidden at a bridge egress ($tcflags)" +} + +test_gretap_forbidden_egress() +{ + test_span_gre_forbidden_egress gt4 "mirror to gretap" +} + +test_ip6gretap_forbidden_egress() +{ + test_span_gre_forbidden_egress gt6 "mirror to ip6gretap" +} + +test_span_gre_untagged_egress() +{ + local tundev=$1; shift + local what=$1; shift + + RET=0 + + mirror_install $swp1 ingress $tundev "matchall $tcflags" + + quick_test_span_gre_dir $tundev ingress + quick_test_span_vlan_dir $h3 555 ingress + + bridge vlan add dev $swp3 vid 555 pvid untagged + sleep 1 + quick_test_span_gre_dir $tundev ingress + fail_test_span_vlan_dir $h3 555 ingress + + bridge vlan add dev $swp3 vid 555 + sleep 1 + quick_test_span_gre_dir $tundev ingress + quick_test_span_vlan_dir $h3 555 ingress + + mirror_uninstall $swp1 ingress + + log_test "$what: vlan untagged at a bridge egress ($tcflags)" +} + +test_gretap_untagged_egress() +{ + test_span_gre_untagged_egress gt4 "mirror to gretap" +} + +test_ip6gretap_untagged_egress() +{ + test_span_gre_untagged_egress gt6 "mirror to ip6gretap" +} + +test_span_gre_fdb_roaming() +{ + local tundev=$1; shift + local what=$1; shift + local h3mac=$(mac_get $h3) + + RET=0 + + mirror_install $swp1 ingress $tundev "matchall $tcflags" + quick_test_span_gre_dir $tundev ingress + + bridge fdb del dev $swp3 $h3mac vlan 555 master + bridge fdb add dev $swp2 $h3mac vlan 555 master + sleep 1 + fail_test_span_gre_dir $tundev ingress + + bridge fdb del dev $swp2 $h3mac vlan 555 master + # Re-prime FDB + $ARPING -I br1.555 192.0.2.130 -fqc 1 + sleep 1 + quick_test_span_gre_dir $tundev ingress + + mirror_uninstall $swp1 ingress + + log_test "$what: MAC roaming ($tcflags)" +} + +test_gretap_fdb_roaming() +{ + test_span_gre_fdb_roaming gt4 "mirror to gretap" +} + +test_ip6gretap_fdb_roaming() +{ + test_span_gre_fdb_roaming gt6 "mirror to ip6gretap" +} + +test_gretap_stp() +{ + full_test_span_gre_stp gt4 $swp3 "mirror to gretap" +} + +test_ip6gretap_stp() +{ + full_test_span_gre_stp gt6 $swp3 "mirror to ip6gretap" +} + +test_all() +{ + slow_path_trap_install $swp1 ingress + slow_path_trap_install $swp1 egress + + tests_run + + slow_path_trap_uninstall $swp1 egress + slow_path_trap_uninstall $swp1 ingress +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tcflags="skip_hw" +test_all + +if ! tc_offload_check; then + echo "WARN: Could not test offloaded functionality" +else + tcflags="skip_sw" + test_all +fi + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/mirror_lib.sh b/tools/testing/selftests/net/forwarding/mirror_lib.sh new file mode 100644 index 000000000..07991e102 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/mirror_lib.sh @@ -0,0 +1,132 @@ +# SPDX-License-Identifier: GPL-2.0 + +mirror_install() +{ + local from_dev=$1; shift + local direction=$1; shift + local to_dev=$1; shift + local filter=$1; shift + + tc filter add dev $from_dev $direction \ + pref 1000 $filter \ + action mirred egress mirror dev $to_dev +} + +mirror_uninstall() +{ + local from_dev=$1; shift + local direction=$1; shift + + tc filter del dev $swp1 $direction pref 1000 +} + +mirror_test() +{ + local vrf_name=$1; shift + local sip=$1; shift + local dip=$1; shift + local dev=$1; shift + local pref=$1; shift + local expect=$1; shift + + local t0=$(tc_rule_stats_get $dev $pref) + ip vrf exec $vrf_name \ + ${PING} ${sip:+-I $sip} $dip -c 10 -i 0.1 -w 2 &> /dev/null + local t1=$(tc_rule_stats_get $dev $pref) + local delta=$((t1 - t0)) + # Tolerate a couple stray extra packets. + ((expect <= delta && delta <= expect + 2)) + check_err $? "Expected to capture $expect packets, got $delta." +} + +do_test_span_dir_ips() +{ + local expect=$1; shift + local dev=$1; shift + local direction=$1; shift + local ip1=$1; shift + local ip2=$1; shift + + icmp_capture_install $dev + mirror_test v$h1 $ip1 $ip2 $dev 100 $expect + mirror_test v$h2 $ip2 $ip1 $dev 100 $expect + icmp_capture_uninstall $dev +} + +quick_test_span_dir_ips() +{ + do_test_span_dir_ips 10 "$@" +} + +fail_test_span_dir_ips() +{ + do_test_span_dir_ips 0 "$@" +} + +test_span_dir_ips() +{ + local dev=$1; shift + local direction=$1; shift + local forward_type=$1; shift + local backward_type=$1; shift + local ip1=$1; shift + local ip2=$1; shift + + quick_test_span_dir_ips "$dev" "$direction" "$ip1" "$ip2" + + icmp_capture_install $dev "type $forward_type" + mirror_test v$h1 $ip1 $ip2 $dev 100 10 + icmp_capture_uninstall $dev + + icmp_capture_install $dev "type $backward_type" + mirror_test v$h2 $ip2 $ip1 $dev 100 10 + icmp_capture_uninstall $dev +} + +fail_test_span_dir() +{ + fail_test_span_dir_ips "$@" 192.0.2.1 192.0.2.2 +} + +test_span_dir() +{ + test_span_dir_ips "$@" 192.0.2.1 192.0.2.2 +} + +do_test_span_vlan_dir_ips() +{ + local expect=$1; shift + local dev=$1; shift + local vid=$1; shift + local direction=$1; shift + local ip1=$1; shift + local ip2=$1; shift + + # Install the capture as skip_hw to avoid double-counting of packets. + # The traffic is meant for local box anyway, so will be trapped to + # kernel. + vlan_capture_install $dev "skip_hw vlan_id $vid vlan_ethtype ip" + mirror_test v$h1 $ip1 $ip2 $dev 100 $expect + mirror_test v$h2 $ip2 $ip1 $dev 100 $expect + vlan_capture_uninstall $dev +} + +quick_test_span_vlan_dir_ips() +{ + do_test_span_vlan_dir_ips 10 "$@" +} + +fail_test_span_vlan_dir_ips() +{ + do_test_span_vlan_dir_ips 0 "$@" +} + +quick_test_span_vlan_dir() +{ + quick_test_span_vlan_dir_ips "$@" 192.0.2.1 192.0.2.2 +} + +fail_test_span_vlan_dir() +{ + fail_test_span_vlan_dir_ips "$@" 192.0.2.1 192.0.2.2 +} diff --git a/tools/testing/selftests/net/forwarding/mirror_topo_lib.sh b/tools/testing/selftests/net/forwarding/mirror_topo_lib.sh new file mode 100644 index 000000000..04979e596 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/mirror_topo_lib.sh @@ -0,0 +1,101 @@ +# SPDX-License-Identifier: GPL-2.0 + +# This is the standard topology for testing mirroring. The tests that use it +# tweak it in one way or another--typically add more devices to the topology. +# +# +---------------------+ +---------------------+ +# | H1 | | H2 | +# | + $h1 | | $h2 + | +# | | 192.0.2.1/28 | | 192.0.2.2/28 | | +# +-----|---------------+ +---------------|-----+ +# | | +# +-----|-------------------------------------------------------------|-----+ +# | SW o--> mirror | | +# | +---|-------------------------------------------------------------|---+ | +# | | + $swp1 BR $swp2 + | | +# | +---------------------------------------------------------------------+ | +# | | +# | + $swp3 | +# +-----|-------------------------------------------------------------------+ +# | +# +-----|-------------------------------------------------------------------+ +# | H3 + $h3 | +# | | +# +-------------------------------------------------------------------------+ + +mirror_topo_h1_create() +{ + simple_if_init $h1 192.0.2.1/28 +} + +mirror_topo_h1_destroy() +{ + simple_if_fini $h1 192.0.2.1/28 +} + +mirror_topo_h2_create() +{ + simple_if_init $h2 192.0.2.2/28 +} + +mirror_topo_h2_destroy() +{ + simple_if_fini $h2 192.0.2.2/28 +} + +mirror_topo_h3_create() +{ + simple_if_init $h3 + tc qdisc add dev $h3 clsact +} + +mirror_topo_h3_destroy() +{ + tc qdisc del dev $h3 clsact + simple_if_fini $h3 +} + +mirror_topo_switch_create() +{ + ip link set dev $swp3 up + + ip link add name br1 type bridge vlan_filtering 1 + ip link set dev br1 up + + ip link set dev $swp1 master br1 + ip link set dev $swp1 up + + ip link set dev $swp2 master br1 + ip link set dev $swp2 up + + tc qdisc add dev $swp1 clsact +} + +mirror_topo_switch_destroy() +{ + tc qdisc del dev $swp1 clsact + + ip link set dev $swp1 down + ip link set dev $swp2 down + ip link del dev br1 + + ip link set dev $swp3 down +} + +mirror_topo_create() +{ + mirror_topo_h1_create + mirror_topo_h2_create + mirror_topo_h3_create + + mirror_topo_switch_create +} + +mirror_topo_destroy() +{ + mirror_topo_switch_destroy + + mirror_topo_h3_destroy + mirror_topo_h2_destroy + mirror_topo_h1_destroy +} diff --git a/tools/testing/selftests/net/forwarding/mirror_vlan.sh b/tools/testing/selftests/net/forwarding/mirror_vlan.sh new file mode 100755 index 000000000..9ab2ce77b --- /dev/null +++ b/tools/testing/selftests/net/forwarding/mirror_vlan.sh @@ -0,0 +1,131 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# This test uses standard topology for testing mirroring. See mirror_topo_lib.sh +# for more details. +# +# Test for "tc action mirred egress mirror" that mirrors to a vlan device. + +ALL_TESTS=" + test_vlan + test_tagged_vlan +" + +NUM_NETIFS=6 +source lib.sh +source mirror_lib.sh +source mirror_topo_lib.sh + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + swp3=${NETIFS[p5]} + h3=${NETIFS[p6]} + + vrf_prepare + mirror_topo_create + + vlan_create $swp3 555 + + vlan_create $h3 555 v$h3 + matchall_sink_create $h3.555 + + vlan_create $h1 111 v$h1 192.0.2.17/28 + bridge vlan add dev $swp1 vid 111 + + vlan_create $h2 111 v$h2 192.0.2.18/28 + bridge vlan add dev $swp2 vid 111 +} + +cleanup() +{ + pre_cleanup + + vlan_destroy $h2 111 + vlan_destroy $h1 111 + vlan_destroy $h3 555 + vlan_destroy $swp3 555 + + mirror_topo_destroy + vrf_cleanup +} + +test_vlan_dir() +{ + local direction=$1; shift + local forward_type=$1; shift + local backward_type=$1; shift + + RET=0 + + mirror_install $swp1 $direction $swp3.555 "matchall $tcflags" + test_span_dir "$h3.555" "$direction" "$forward_type" "$backward_type" + mirror_uninstall $swp1 $direction + + log_test "$direction mirror to vlan ($tcflags)" +} + +test_vlan() +{ + test_vlan_dir ingress 8 0 + test_vlan_dir egress 0 8 +} + +test_tagged_vlan_dir() +{ + local direction=$1; shift + local forward_type=$1; shift + local backward_type=$1; shift + + RET=0 + + mirror_install $swp1 $direction $swp3.555 "matchall $tcflags" + do_test_span_vlan_dir_ips 10 "$h3.555" 111 "$direction" \ + 192.0.2.17 192.0.2.18 + do_test_span_vlan_dir_ips 0 "$h3.555" 555 "$direction" \ + 192.0.2.17 192.0.2.18 + mirror_uninstall $swp1 $direction + + log_test "$direction mirror tagged to vlan ($tcflags)" +} + +test_tagged_vlan() +{ + test_tagged_vlan_dir ingress 8 0 + test_tagged_vlan_dir egress 0 8 +} + +test_all() +{ + slow_path_trap_install $swp1 ingress + slow_path_trap_install $swp1 egress + trap_install $h3 ingress + + tests_run + + trap_uninstall $h3 ingress + slow_path_trap_uninstall $swp1 egress + slow_path_trap_uninstall $swp1 ingress +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tcflags="skip_hw" +test_all + +if ! tc_offload_check; then + echo "WARN: Could not test offloaded functionality" +else + tcflags="skip_sw" + test_all +fi + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/router.sh b/tools/testing/selftests/net/forwarding/router.sh new file mode 100755 index 000000000..a75cb51cc --- /dev/null +++ b/tools/testing/selftests/net/forwarding/router.sh @@ -0,0 +1,135 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +ALL_TESTS="ping_ipv4 ping_ipv6" +NUM_NETIFS=4 +source lib.sh + +h1_create() +{ + vrf_create "vrf-h1" + ip link set dev $h1 master vrf-h1 + + ip link set dev vrf-h1 up + ip link set dev $h1 up + + ip address add 192.0.2.2/24 dev $h1 + ip address add 2001:db8:1::2/64 dev $h1 + + ip route add 198.51.100.0/24 vrf vrf-h1 nexthop via 192.0.2.1 + ip route add 2001:db8:2::/64 vrf vrf-h1 nexthop via 2001:db8:1::1 +} + +h1_destroy() +{ + ip route del 2001:db8:2::/64 vrf vrf-h1 + ip route del 198.51.100.0/24 vrf vrf-h1 + + ip address del 2001:db8:1::2/64 dev $h1 + ip address del 192.0.2.2/24 dev $h1 + + ip link set dev $h1 down + vrf_destroy "vrf-h1" +} + +h2_create() +{ + vrf_create "vrf-h2" + ip link set dev $h2 master vrf-h2 + + ip link set dev vrf-h2 up + ip link set dev $h2 up + + ip address add 198.51.100.2/24 dev $h2 + ip address add 2001:db8:2::2/64 dev $h2 + + ip route add 192.0.2.0/24 vrf vrf-h2 nexthop via 198.51.100.1 + ip route add 2001:db8:1::/64 vrf vrf-h2 nexthop via 2001:db8:2::1 +} + +h2_destroy() +{ + ip route del 2001:db8:1::/64 vrf vrf-h2 + ip route del 192.0.2.0/24 vrf vrf-h2 + + ip address del 2001:db8:2::2/64 dev $h2 + ip address del 198.51.100.2/24 dev $h2 + + ip link set dev $h2 down + vrf_destroy "vrf-h2" +} + +router_create() +{ + ip link set dev $rp1 up + ip link set dev $rp2 up + + ip address add 192.0.2.1/24 dev $rp1 + ip address add 2001:db8:1::1/64 dev $rp1 + + ip address add 198.51.100.1/24 dev $rp2 + ip address add 2001:db8:2::1/64 dev $rp2 +} + +router_destroy() +{ + ip address del 2001:db8:2::1/64 dev $rp2 + ip address del 198.51.100.1/24 dev $rp2 + + ip address del 2001:db8:1::1/64 dev $rp1 + ip address del 192.0.2.1/24 dev $rp1 + + ip link set dev $rp2 down + ip link set dev $rp1 down +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + rp1=${NETIFS[p2]} + + rp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + vrf_prepare + + h1_create + h2_create + + router_create + + forwarding_enable +} + +cleanup() +{ + pre_cleanup + + forwarding_restore + + router_destroy + + h2_destroy + h1_destroy + + vrf_cleanup +} + +ping_ipv4() +{ + ping_test $h1 198.51.100.2 +} + +ping_ipv6() +{ + ping6_test $h1 2001:db8:2::2 +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tests_run + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/router_bridge.sh b/tools/testing/selftests/net/forwarding/router_bridge.sh new file mode 100755 index 000000000..ebc596a27 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/router_bridge.sh @@ -0,0 +1,113 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +ALL_TESTS=" + ping_ipv4 + ping_ipv6 +" +NUM_NETIFS=4 +source lib.sh + +h1_create() +{ + simple_if_init $h1 192.0.2.1/28 2001:db8:1::1/64 + ip -4 route add 192.0.2.128/28 vrf v$h1 nexthop via 192.0.2.2 + ip -6 route add 2001:db8:2::/64 vrf v$h1 nexthop via 2001:db8:1::2 +} + +h1_destroy() +{ + ip -6 route del 2001:db8:2::/64 vrf v$h1 + ip -4 route del 192.0.2.128/28 vrf v$h1 + simple_if_fini $h1 192.0.2.1/28 2001:db8:1::1/64 +} + +h2_create() +{ + simple_if_init $h2 192.0.2.130/28 2001:db8:2::2/64 + ip -4 route add 192.0.2.0/28 vrf v$h2 nexthop via 192.0.2.129 + ip -6 route add 2001:db8:1::/64 vrf v$h2 nexthop via 2001:db8:2::1 +} + +h2_destroy() +{ + ip -6 route del 2001:db8:1::/64 vrf v$h2 + ip -4 route del 192.0.2.0/28 vrf v$h2 + simple_if_fini $h2 192.0.2.130/28 2001:db8:2::2/64 +} + +router_create() +{ + ip link add name br1 type bridge vlan_filtering 1 + ip link set dev br1 up + + ip link set dev $swp1 master br1 + ip link set dev $swp1 up + __addr_add_del br1 add 192.0.2.2/28 2001:db8:1::2/64 + + ip link set dev $swp2 up + __addr_add_del $swp2 add 192.0.2.129/28 2001:db8:2::1/64 +} + +router_destroy() +{ + __addr_add_del $swp2 del 192.0.2.129/28 2001:db8:2::1/64 + ip link set dev $swp2 down + + __addr_add_del br1 del 192.0.2.2/28 2001:db8:1::2/64 + ip link set dev $swp1 down + ip link set dev $swp1 nomaster + + ip link del dev br1 +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + vrf_prepare + + h1_create + h2_create + + router_create + + forwarding_enable +} + +cleanup() +{ + pre_cleanup + + forwarding_restore + + router_destroy + + h2_destroy + h1_destroy + + vrf_cleanup +} + +ping_ipv4() +{ + ping_test $h1 192.0.2.130 +} + +ping_ipv6() +{ + ping6_test $h1 2001:db8:2::2 +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tests_run + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/router_bridge_vlan.sh b/tools/testing/selftests/net/forwarding/router_bridge_vlan.sh new file mode 100755 index 000000000..fa6a88c50 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/router_bridge_vlan.sh @@ -0,0 +1,132 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +ALL_TESTS=" + ping_ipv4 + ping_ipv6 + vlan +" +NUM_NETIFS=4 +source lib.sh + +h1_create() +{ + simple_if_init $h1 + vlan_create $h1 555 v$h1 192.0.2.1/28 2001:db8:1::1/64 + ip -4 route add 192.0.2.128/28 vrf v$h1 nexthop via 192.0.2.2 + ip -6 route add 2001:db8:2::/64 vrf v$h1 nexthop via 2001:db8:1::2 +} + +h1_destroy() +{ + ip -6 route del 2001:db8:2::/64 vrf v$h1 + ip -4 route del 192.0.2.128/28 vrf v$h1 + vlan_destroy $h1 555 + simple_if_fini $h1 +} + +h2_create() +{ + simple_if_init $h2 192.0.2.130/28 2001:db8:2::2/64 + ip -4 route add 192.0.2.0/28 vrf v$h2 nexthop via 192.0.2.129 + ip -6 route add 2001:db8:1::/64 vrf v$h2 nexthop via 2001:db8:2::1 +} + +h2_destroy() +{ + ip -6 route del 2001:db8:1::/64 vrf v$h2 + ip -4 route del 192.0.2.0/28 vrf v$h2 + simple_if_fini $h2 192.0.2.130/28 2001:db8:2::2/64 +} + +router_create() +{ + ip link add name br1 type bridge vlan_filtering 1 + ip link set dev br1 up + + ip link set dev $swp1 master br1 + ip link set dev $swp1 up + + bridge vlan add dev br1 vid 555 self pvid untagged + bridge vlan add dev $swp1 vid 555 + + __addr_add_del br1 add 192.0.2.2/28 2001:db8:1::2/64 + + ip link set dev $swp2 up + __addr_add_del $swp2 add 192.0.2.129/28 2001:db8:2::1/64 +} + +router_destroy() +{ + __addr_add_del $swp2 del 192.0.2.129/28 2001:db8:2::1/64 + ip link set dev $swp2 down + + __addr_add_del br1 del 192.0.2.2/28 2001:db8:1::2/64 + ip link set dev $swp1 down + ip link set dev $swp1 nomaster + + ip link del dev br1 +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + vrf_prepare + + h1_create + h2_create + + router_create + + forwarding_enable +} + +cleanup() +{ + pre_cleanup + + forwarding_restore + + router_destroy + + h2_destroy + h1_destroy + + vrf_cleanup +} + +vlan() +{ + RET=0 + + bridge vlan add dev br1 vid 333 self + check_err $? "Can't add a non-PVID VLAN" + bridge vlan del dev br1 vid 333 self + check_err $? "Can't remove a non-PVID VLAN" + + log_test "vlan" +} + +ping_ipv4() +{ + ping_test $h1 192.0.2.130 +} + +ping_ipv6() +{ + ping6_test $h1 2001:db8:2::2 +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tests_run + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/router_broadcast.sh b/tools/testing/selftests/net/forwarding/router_broadcast.sh new file mode 100755 index 000000000..7bd2ebb6e --- /dev/null +++ b/tools/testing/selftests/net/forwarding/router_broadcast.sh @@ -0,0 +1,233 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +ALL_TESTS="ping_ipv4" +NUM_NETIFS=6 +source lib.sh + +h1_create() +{ + vrf_create "vrf-h1" + ip link set dev $h1 master vrf-h1 + + ip link set dev vrf-h1 up + ip link set dev $h1 up + + ip address add 192.0.2.2/24 dev $h1 + + ip route add 198.51.100.0/24 vrf vrf-h1 nexthop via 192.0.2.1 + ip route add 198.51.200.0/24 vrf vrf-h1 nexthop via 192.0.2.1 +} + +h1_destroy() +{ + ip route del 198.51.200.0/24 vrf vrf-h1 + ip route del 198.51.100.0/24 vrf vrf-h1 + + ip address del 192.0.2.2/24 dev $h1 + + ip link set dev $h1 down + vrf_destroy "vrf-h1" +} + +h2_create() +{ + vrf_create "vrf-h2" + ip link set dev $h2 master vrf-h2 + + ip link set dev vrf-h2 up + ip link set dev $h2 up + + ip address add 198.51.100.2/24 dev $h2 + + ip route add 192.0.2.0/24 vrf vrf-h2 nexthop via 198.51.100.1 + ip route add 198.51.200.0/24 vrf vrf-h2 nexthop via 198.51.100.1 +} + +h2_destroy() +{ + ip route del 198.51.200.0/24 vrf vrf-h2 + ip route del 192.0.2.0/24 vrf vrf-h2 + + ip address del 198.51.100.2/24 dev $h2 + + ip link set dev $h2 down + vrf_destroy "vrf-h2" +} + +h3_create() +{ + vrf_create "vrf-h3" + ip link set dev $h3 master vrf-h3 + + ip link set dev vrf-h3 up + ip link set dev $h3 up + + ip address add 198.51.200.2/24 dev $h3 + + ip route add 192.0.2.0/24 vrf vrf-h3 nexthop via 198.51.200.1 + ip route add 198.51.100.0/24 vrf vrf-h3 nexthop via 198.51.200.1 +} + +h3_destroy() +{ + ip route del 198.51.100.0/24 vrf vrf-h3 + ip route del 192.0.2.0/24 vrf vrf-h3 + + ip address del 198.51.200.2/24 dev $h3 + + ip link set dev $h3 down + vrf_destroy "vrf-h3" +} + +router_create() +{ + ip link set dev $rp1 up + ip link set dev $rp2 up + ip link set dev $rp3 up + + ip address add 192.0.2.1/24 dev $rp1 + + ip address add 198.51.100.1/24 dev $rp2 + ip address add 198.51.200.1/24 dev $rp3 +} + +router_destroy() +{ + ip address del 198.51.200.1/24 dev $rp3 + ip address del 198.51.100.1/24 dev $rp2 + + ip address del 192.0.2.1/24 dev $rp1 + + ip link set dev $rp3 down + ip link set dev $rp2 down + ip link set dev $rp1 down +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + rp1=${NETIFS[p2]} + + rp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + rp3=${NETIFS[p5]} + h3=${NETIFS[p6]} + + vrf_prepare + + h1_create + h2_create + h3_create + + router_create + + forwarding_enable +} + +cleanup() +{ + pre_cleanup + + forwarding_restore + + router_destroy + + h3_destroy + h2_destroy + h1_destroy + + vrf_cleanup +} + +bc_forwarding_disable() +{ + sysctl_set net.ipv4.conf.all.bc_forwarding 0 + sysctl_set net.ipv4.conf.$rp1.bc_forwarding 0 +} + +bc_forwarding_enable() +{ + sysctl_set net.ipv4.conf.all.bc_forwarding 1 + sysctl_set net.ipv4.conf.$rp1.bc_forwarding 1 +} + +bc_forwarding_restore() +{ + sysctl_restore net.ipv4.conf.$rp1.bc_forwarding + sysctl_restore net.ipv4.conf.all.bc_forwarding +} + +ping_test_from() +{ + local oif=$1 + local dip=$2 + local from=$3 + local fail=${4:-0} + + RET=0 + + log_info "ping $dip, expected reply from $from" + ip vrf exec $(master_name_get $oif) \ + $PING -I $oif $dip -c 10 -i 0.1 -w 2 -b 2>&1 | grep $from &> /dev/null + check_err_fail $fail $? +} + +ping_ipv4() +{ + sysctl_set net.ipv4.icmp_echo_ignore_broadcasts 0 + + bc_forwarding_disable + log_info "bc_forwarding disabled on r1 =>" + ping_test_from $h1 198.51.100.255 192.0.2.1 + log_test "h1 -> net2: reply from r1 (not forwarding)" + ping_test_from $h1 198.51.200.255 192.0.2.1 + log_test "h1 -> net3: reply from r1 (not forwarding)" + ping_test_from $h1 192.0.2.255 192.0.2.1 + log_test "h1 -> net1: reply from r1 (not dropping)" + ping_test_from $h1 255.255.255.255 192.0.2.1 + log_test "h1 -> 255.255.255.255: reply from r1 (not forwarding)" + + ping_test_from $h2 192.0.2.255 198.51.100.1 + log_test "h2 -> net1: reply from r1 (not forwarding)" + ping_test_from $h2 198.51.200.255 198.51.100.1 + log_test "h2 -> net3: reply from r1 (not forwarding)" + ping_test_from $h2 198.51.100.255 198.51.100.1 + log_test "h2 -> net2: reply from r1 (not dropping)" + ping_test_from $h2 255.255.255.255 198.51.100.1 + log_test "h2 -> 255.255.255.255: reply from r1 (not forwarding)" + bc_forwarding_restore + + bc_forwarding_enable + log_info "bc_forwarding enabled on r1 =>" + ping_test_from $h1 198.51.100.255 198.51.100.2 + log_test "h1 -> net2: reply from h2 (forwarding)" + ping_test_from $h1 198.51.200.255 198.51.200.2 + log_test "h1 -> net3: reply from h3 (forwarding)" + ping_test_from $h1 192.0.2.255 192.0.2.1 1 + log_test "h1 -> net1: no reply (dropping)" + ping_test_from $h1 255.255.255.255 192.0.2.1 + log_test "h1 -> 255.255.255.255: reply from r1 (not forwarding)" + + ping_test_from $h2 192.0.2.255 192.0.2.2 + log_test "h2 -> net1: reply from h1 (forwarding)" + ping_test_from $h2 198.51.200.255 198.51.200.2 + log_test "h2 -> net3: reply from h3 (forwarding)" + ping_test_from $h2 198.51.100.255 198.51.100.1 1 + log_test "h2 -> net2: no reply (dropping)" + ping_test_from $h2 255.255.255.255 198.51.100.1 + log_test "h2 -> 255.255.255.255: reply from r1 (not forwarding)" + bc_forwarding_restore + + sysctl_restore net.ipv4.icmp_echo_ignore_broadcasts +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tests_run + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/router_multipath.sh b/tools/testing/selftests/net/forwarding/router_multipath.sh new file mode 100755 index 000000000..79a209927 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/router_multipath.sh @@ -0,0 +1,342 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +ALL_TESTS="ping_ipv4 ping_ipv6 multipath_test" +NUM_NETIFS=8 +source lib.sh + +h1_create() +{ + vrf_create "vrf-h1" + ip link set dev $h1 master vrf-h1 + + ip link set dev vrf-h1 up + ip link set dev $h1 up + + ip address add 192.0.2.2/24 dev $h1 + ip address add 2001:db8:1::2/64 dev $h1 + + ip route add 198.51.100.0/24 vrf vrf-h1 nexthop via 192.0.2.1 + ip route add 2001:db8:2::/64 vrf vrf-h1 nexthop via 2001:db8:1::1 +} + +h1_destroy() +{ + ip route del 2001:db8:2::/64 vrf vrf-h1 + ip route del 198.51.100.0/24 vrf vrf-h1 + + ip address del 2001:db8:1::2/64 dev $h1 + ip address del 192.0.2.2/24 dev $h1 + + ip link set dev $h1 down + vrf_destroy "vrf-h1" +} + +h2_create() +{ + vrf_create "vrf-h2" + ip link set dev $h2 master vrf-h2 + + ip link set dev vrf-h2 up + ip link set dev $h2 up + + ip address add 198.51.100.2/24 dev $h2 + ip address add 2001:db8:2::2/64 dev $h2 + + ip route add 192.0.2.0/24 vrf vrf-h2 nexthop via 198.51.100.1 + ip route add 2001:db8:1::/64 vrf vrf-h2 nexthop via 2001:db8:2::1 +} + +h2_destroy() +{ + ip route del 2001:db8:1::/64 vrf vrf-h2 + ip route del 192.0.2.0/24 vrf vrf-h2 + + ip address del 2001:db8:2::2/64 dev $h2 + ip address del 198.51.100.2/24 dev $h2 + + ip link set dev $h2 down + vrf_destroy "vrf-h2" +} + +router1_create() +{ + vrf_create "vrf-r1" + ip link set dev $rp11 master vrf-r1 + ip link set dev $rp12 master vrf-r1 + ip link set dev $rp13 master vrf-r1 + + ip link set dev vrf-r1 up + ip link set dev $rp11 up + ip link set dev $rp12 up + ip link set dev $rp13 up + + ip address add 192.0.2.1/24 dev $rp11 + ip address add 2001:db8:1::1/64 dev $rp11 + + ip address add 169.254.2.12/24 dev $rp12 + ip address add fe80:2::12/64 dev $rp12 + + ip address add 169.254.3.13/24 dev $rp13 + ip address add fe80:3::13/64 dev $rp13 + + ip route add 198.51.100.0/24 vrf vrf-r1 \ + nexthop via 169.254.2.22 dev $rp12 \ + nexthop via 169.254.3.23 dev $rp13 + ip route add 2001:db8:2::/64 vrf vrf-r1 \ + nexthop via fe80:2::22 dev $rp12 \ + nexthop via fe80:3::23 dev $rp13 +} + +router1_destroy() +{ + ip route del 2001:db8:2::/64 vrf vrf-r1 + ip route del 198.51.100.0/24 vrf vrf-r1 + + ip address del fe80:3::13/64 dev $rp13 + ip address del 169.254.3.13/24 dev $rp13 + + ip address del fe80:2::12/64 dev $rp12 + ip address del 169.254.2.12/24 dev $rp12 + + ip address del 2001:db8:1::1/64 dev $rp11 + ip address del 192.0.2.1/24 dev $rp11 + + ip link set dev $rp13 down + ip link set dev $rp12 down + ip link set dev $rp11 down + + vrf_destroy "vrf-r1" +} + +router2_create() +{ + vrf_create "vrf-r2" + ip link set dev $rp21 master vrf-r2 + ip link set dev $rp22 master vrf-r2 + ip link set dev $rp23 master vrf-r2 + + ip link set dev vrf-r2 up + ip link set dev $rp21 up + ip link set dev $rp22 up + ip link set dev $rp23 up + + ip address add 198.51.100.1/24 dev $rp21 + ip address add 2001:db8:2::1/64 dev $rp21 + + ip address add 169.254.2.22/24 dev $rp22 + ip address add fe80:2::22/64 dev $rp22 + + ip address add 169.254.3.23/24 dev $rp23 + ip address add fe80:3::23/64 dev $rp23 + + ip route add 192.0.2.0/24 vrf vrf-r2 \ + nexthop via 169.254.2.12 dev $rp22 \ + nexthop via 169.254.3.13 dev $rp23 + ip route add 2001:db8:1::/64 vrf vrf-r2 \ + nexthop via fe80:2::12 dev $rp22 \ + nexthop via fe80:3::13 dev $rp23 +} + +router2_destroy() +{ + ip route del 2001:db8:1::/64 vrf vrf-r2 + ip route del 192.0.2.0/24 vrf vrf-r2 + + ip address del fe80:3::23/64 dev $rp23 + ip address del 169.254.3.23/24 dev $rp23 + + ip address del fe80:2::22/64 dev $rp22 + ip address del 169.254.2.22/24 dev $rp22 + + ip address del 2001:db8:2::1/64 dev $rp21 + ip address del 198.51.100.1/24 dev $rp21 + + ip link set dev $rp23 down + ip link set dev $rp22 down + ip link set dev $rp21 down + + vrf_destroy "vrf-r2" +} + +multipath4_test() +{ + local desc="$1" + local weight_rp12=$2 + local weight_rp13=$3 + local t0_rp12 t0_rp13 t1_rp12 t1_rp13 + local packets_rp12 packets_rp13 + + # Transmit multiple flows from h1 to h2 and make sure they are + # distributed between both multipath links (rp12 and rp13) + # according to the configured weights. + sysctl_set net.ipv4.fib_multipath_hash_policy 1 + ip route replace 198.51.100.0/24 vrf vrf-r1 \ + nexthop via 169.254.2.22 dev $rp12 weight $weight_rp12 \ + nexthop via 169.254.3.23 dev $rp13 weight $weight_rp13 + + t0_rp12=$(link_stats_tx_packets_get $rp12) + t0_rp13=$(link_stats_tx_packets_get $rp13) + + ip vrf exec vrf-h1 $MZ -q -p 64 -A 192.0.2.2 -B 198.51.100.2 \ + -d 1msec -t udp "sp=1024,dp=0-32768" + + t1_rp12=$(link_stats_tx_packets_get $rp12) + t1_rp13=$(link_stats_tx_packets_get $rp13) + + let "packets_rp12 = $t1_rp12 - $t0_rp12" + let "packets_rp13 = $t1_rp13 - $t0_rp13" + multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13 + + # Restore settings. + ip route replace 198.51.100.0/24 vrf vrf-r1 \ + nexthop via 169.254.2.22 dev $rp12 \ + nexthop via 169.254.3.23 dev $rp13 + sysctl_restore net.ipv4.fib_multipath_hash_policy +} + +multipath6_l4_test() +{ + local desc="$1" + local weight_rp12=$2 + local weight_rp13=$3 + local t0_rp12 t0_rp13 t1_rp12 t1_rp13 + local packets_rp12 packets_rp13 + + # Transmit multiple flows from h1 to h2 and make sure they are + # distributed between both multipath links (rp12 and rp13) + # according to the configured weights. + sysctl_set net.ipv6.fib_multipath_hash_policy 1 + + ip route replace 2001:db8:2::/64 vrf vrf-r1 \ + nexthop via fe80:2::22 dev $rp12 weight $weight_rp12 \ + nexthop via fe80:3::23 dev $rp13 weight $weight_rp13 + + t0_rp12=$(link_stats_tx_packets_get $rp12) + t0_rp13=$(link_stats_tx_packets_get $rp13) + + $MZ $h1 -6 -q -p 64 -A 2001:db8:1::2 -B 2001:db8:2::2 \ + -d 1msec -t udp "sp=1024,dp=0-32768" + + t1_rp12=$(link_stats_tx_packets_get $rp12) + t1_rp13=$(link_stats_tx_packets_get $rp13) + + let "packets_rp12 = $t1_rp12 - $t0_rp12" + let "packets_rp13 = $t1_rp13 - $t0_rp13" + multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13 + + ip route replace 2001:db8:2::/64 vrf vrf-r1 \ + nexthop via fe80:2::22 dev $rp12 \ + nexthop via fe80:3::23 dev $rp13 + + sysctl_restore net.ipv6.fib_multipath_hash_policy +} + +multipath6_test() +{ + local desc="$1" + local weight_rp12=$2 + local weight_rp13=$3 + local t0_rp12 t0_rp13 t1_rp12 t1_rp13 + local packets_rp12 packets_rp13 + + ip route replace 2001:db8:2::/64 vrf vrf-r1 \ + nexthop via fe80:2::22 dev $rp12 weight $weight_rp12 \ + nexthop via fe80:3::23 dev $rp13 weight $weight_rp13 + + t0_rp12=$(link_stats_tx_packets_get $rp12) + t0_rp13=$(link_stats_tx_packets_get $rp13) + + # Generate 16384 echo requests, each with a random flow label. + for _ in $(seq 1 16384); do + ip vrf exec vrf-h1 $PING6 2001:db8:2::2 -F 0 -c 1 -q &> /dev/null + done + + t1_rp12=$(link_stats_tx_packets_get $rp12) + t1_rp13=$(link_stats_tx_packets_get $rp13) + + let "packets_rp12 = $t1_rp12 - $t0_rp12" + let "packets_rp13 = $t1_rp13 - $t0_rp13" + multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13 + + ip route replace 2001:db8:2::/64 vrf vrf-r1 \ + nexthop via fe80:2::22 dev $rp12 \ + nexthop via fe80:3::23 dev $rp13 +} + +multipath_test() +{ + log_info "Running IPv4 multipath tests" + multipath4_test "ECMP" 1 1 + multipath4_test "Weighted MP 2:1" 2 1 + multipath4_test "Weighted MP 11:45" 11 45 + + log_info "Running IPv6 multipath tests" + multipath6_test "ECMP" 1 1 + multipath6_test "Weighted MP 2:1" 2 1 + multipath6_test "Weighted MP 11:45" 11 45 + + log_info "Running IPv6 L4 hash multipath tests" + multipath6_l4_test "ECMP" 1 1 + multipath6_l4_test "Weighted MP 2:1" 2 1 + multipath6_l4_test "Weighted MP 11:45" 11 45 +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + rp11=${NETIFS[p2]} + + rp12=${NETIFS[p3]} + rp22=${NETIFS[p4]} + + rp13=${NETIFS[p5]} + rp23=${NETIFS[p6]} + + rp21=${NETIFS[p7]} + h2=${NETIFS[p8]} + + vrf_prepare + + h1_create + h2_create + + router1_create + router2_create + + forwarding_enable +} + +cleanup() +{ + pre_cleanup + + forwarding_restore + + router2_destroy + router1_destroy + + h2_destroy + h1_destroy + + vrf_cleanup +} + +ping_ipv4() +{ + ping_test $h1 198.51.100.2 +} + +ping_ipv6() +{ + ping6_test $h1 2001:db8:2::2 +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tests_run + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/tc_actions.sh b/tools/testing/selftests/net/forwarding/tc_actions.sh new file mode 100755 index 000000000..813d02d19 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/tc_actions.sh @@ -0,0 +1,213 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +ALL_TESTS="gact_drop_and_ok_test mirred_egress_redirect_test \ + mirred_egress_mirror_test gact_trap_test" +NUM_NETIFS=4 +source tc_common.sh +source lib.sh + +tcflags="skip_hw" + +h1_create() +{ + simple_if_init $h1 192.0.2.1/24 +} + +h1_destroy() +{ + simple_if_fini $h1 192.0.2.1/24 +} + +h2_create() +{ + simple_if_init $h2 192.0.2.2/24 + tc qdisc add dev $h2 clsact +} + +h2_destroy() +{ + tc qdisc del dev $h2 clsact + simple_if_fini $h2 192.0.2.2/24 +} + +switch_create() +{ + simple_if_init $swp1 192.0.2.2/24 + tc qdisc add dev $swp1 clsact + + simple_if_init $swp2 192.0.2.1/24 +} + +switch_destroy() +{ + simple_if_fini $swp2 192.0.2.1/24 + + tc qdisc del dev $swp1 clsact + simple_if_fini $swp1 192.0.2.2/24 +} + +mirred_egress_test() +{ + local action=$1 + + RET=0 + + tc filter add dev $h2 ingress protocol ip pref 1 handle 101 flower \ + $tcflags dst_ip 192.0.2.2 action drop + + $MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip -q + + tc_check_packets "dev $h2 ingress" 101 1 + check_fail $? "Matched without redirect rule inserted" + + tc filter add dev $swp1 ingress protocol ip pref 1 handle 101 flower \ + $tcflags dst_ip 192.0.2.2 action mirred egress $action \ + dev $swp2 + + $MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip -q + + tc_check_packets "dev $h2 ingress" 101 1 + check_err $? "Did not match incoming $action packet" + + tc filter del dev $swp1 ingress protocol ip pref 1 handle 101 flower + tc filter del dev $h2 ingress protocol ip pref 1 handle 101 flower + + log_test "mirred egress $action ($tcflags)" +} + +gact_drop_and_ok_test() +{ + RET=0 + + tc filter add dev $swp1 ingress protocol ip pref 2 handle 102 flower \ + $tcflags dst_ip 192.0.2.2 action drop + + $MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip -q + + tc_check_packets "dev $swp1 ingress" 102 1 + check_err $? "Packet was not dropped" + + tc filter add dev $swp1 ingress protocol ip pref 1 handle 101 flower \ + $tcflags dst_ip 192.0.2.2 action ok + + $MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip -q + + tc_check_packets "dev $swp1 ingress" 101 1 + check_err $? "Did not see passed packet" + + tc_check_packets "dev $swp1 ingress" 102 2 + check_fail $? "Packet was dropped and it should not reach here" + + tc filter del dev $swp1 ingress protocol ip pref 2 handle 102 flower + tc filter del dev $swp1 ingress protocol ip pref 1 handle 101 flower + + log_test "gact drop and ok ($tcflags)" +} + +gact_trap_test() +{ + RET=0 + + if [[ "$tcflags" != "skip_sw" ]]; then + return 0; + fi + + tc filter add dev $swp1 ingress protocol ip pref 1 handle 101 flower \ + skip_hw dst_ip 192.0.2.2 action drop + tc filter add dev $swp1 ingress protocol ip pref 3 handle 103 flower \ + $tcflags dst_ip 192.0.2.2 action mirred egress redirect \ + dev $swp2 + + $MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip -q + + tc_check_packets "dev $swp1 ingress" 101 1 + check_fail $? "Saw packet without trap rule inserted" + + tc filter add dev $swp1 ingress protocol ip pref 2 handle 102 flower \ + $tcflags dst_ip 192.0.2.2 action trap + + $MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip -q + + tc_check_packets "dev $swp1 ingress" 102 1 + check_err $? "Packet was not trapped" + + tc_check_packets "dev $swp1 ingress" 101 1 + check_err $? "Did not see trapped packet" + + tc filter del dev $swp1 ingress protocol ip pref 3 handle 103 flower + tc filter del dev $swp1 ingress protocol ip pref 2 handle 102 flower + tc filter del dev $swp1 ingress protocol ip pref 1 handle 101 flower + + log_test "trap ($tcflags)" +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + h1mac=$(mac_get $h1) + h2mac=$(mac_get $h2) + + swp1origmac=$(mac_get $swp1) + swp2origmac=$(mac_get $swp2) + ip link set $swp1 address $h2mac + ip link set $swp2 address $h1mac + + vrf_prepare + + h1_create + h2_create + switch_create +} + +cleanup() +{ + pre_cleanup + + switch_destroy + h2_destroy + h1_destroy + + vrf_cleanup + + ip link set $swp2 address $swp2origmac + ip link set $swp1 address $swp1origmac +} + +mirred_egress_redirect_test() +{ + mirred_egress_test "redirect" +} + +mirred_egress_mirror_test() +{ + mirred_egress_test "mirror" +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tests_run + +tc_offload_check +if [[ $? -ne 0 ]]; then + log_info "Could not test offloaded functionality" +else + tcflags="skip_sw" + tests_run +fi + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/tc_chains.sh b/tools/testing/selftests/net/forwarding/tc_chains.sh new file mode 100755 index 000000000..2934fb5ed --- /dev/null +++ b/tools/testing/selftests/net/forwarding/tc_chains.sh @@ -0,0 +1,205 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +ALL_TESTS="unreachable_chain_test gact_goto_chain_test create_destroy_chain \ + template_filter_fits" +NUM_NETIFS=2 +source tc_common.sh +source lib.sh + +tcflags="skip_hw" + +h1_create() +{ + simple_if_init $h1 192.0.2.1/24 +} + +h1_destroy() +{ + simple_if_fini $h1 192.0.2.1/24 +} + +h2_create() +{ + simple_if_init $h2 192.0.2.2/24 + tc qdisc add dev $h2 clsact +} + +h2_destroy() +{ + tc qdisc del dev $h2 clsact + simple_if_fini $h2 192.0.2.2/24 +} + +unreachable_chain_test() +{ + RET=0 + + tc filter add dev $h2 ingress chain 1 protocol ip pref 1 handle 1101 \ + flower $tcflags dst_mac $h2mac action drop + + $MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip -q + + tc_check_packets "dev $h2 ingress" 1101 1 + check_fail $? "matched on filter in unreachable chain" + + tc filter del dev $h2 ingress chain 1 protocol ip pref 1 handle 1101 \ + flower + + log_test "unreachable chain ($tcflags)" +} + +gact_goto_chain_test() +{ + RET=0 + + tc filter add dev $h2 ingress chain 1 protocol ip pref 1 handle 1101 \ + flower $tcflags dst_mac $h2mac action drop + tc filter add dev $h2 ingress protocol ip pref 2 handle 102 flower \ + $tcflags dst_mac $h2mac action drop + tc filter add dev $h2 ingress protocol ip pref 1 handle 101 flower \ + $tcflags dst_mac $h2mac action goto chain 1 + + $MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip -q + + tc_check_packets "dev $h2 ingress" 102 1 + check_fail $? "Matched on a wrong filter" + + tc_check_packets "dev $h2 ingress" 101 1 + check_err $? "Did not match on correct filter with goto chain action" + + tc_check_packets "dev $h2 ingress" 1101 1 + check_err $? "Did not match on correct filter in chain 1" + + tc filter del dev $h2 ingress protocol ip pref 1 handle 101 flower + tc filter del dev $h2 ingress protocol ip pref 2 handle 102 flower + tc filter del dev $h2 ingress chain 1 protocol ip pref 1 handle 1101 \ + flower + + log_test "gact goto chain ($tcflags)" +} + +create_destroy_chain() +{ + RET=0 + + tc chain add dev $h2 ingress + check_err $? "Failed to create default chain" + + output="$(tc -j chain get dev $h2 ingress)" + check_err $? "Failed to get default chain" + + echo $output | jq -e ".[] | select(.chain == 0)" &> /dev/null + check_err $? "Unexpected output for default chain" + + tc chain add dev $h2 ingress chain 1 + check_err $? "Failed to create chain 1" + + output="$(tc -j chain get dev $h2 ingress chain 1)" + check_err $? "Failed to get chain 1" + + echo $output | jq -e ".[] | select(.chain == 1)" &> /dev/null + check_err $? "Unexpected output for chain 1" + + output="$(tc -j chain show dev $h2 ingress)" + check_err $? "Failed to dump chains" + + echo $output | jq -e ".[] | select(.chain == 0)" &> /dev/null + check_err $? "Can't find default chain in dump" + + echo $output | jq -e ".[] | select(.chain == 1)" &> /dev/null + check_err $? "Can't find chain 1 in dump" + + tc chain del dev $h2 ingress + check_err $? "Failed to destroy default chain" + + tc chain del dev $h2 ingress chain 1 + check_err $? "Failed to destroy chain 1" + + log_test "create destroy chain" +} + +template_filter_fits() +{ + RET=0 + + tc chain add dev $h2 ingress protocol ip \ + flower dst_mac 00:00:00:00:00:00/FF:FF:FF:FF:FF:FF &> /dev/null + tc chain add dev $h2 ingress chain 1 protocol ip \ + flower src_mac 00:00:00:00:00:00/FF:FF:FF:FF:FF:FF &> /dev/null + + tc filter add dev $h2 ingress protocol ip pref 1 handle 1101 \ + flower dst_mac $h2mac action drop + check_err $? "Failed to insert filter which fits template" + + tc filter add dev $h2 ingress protocol ip pref 1 handle 1102 \ + flower src_mac $h2mac action drop &> /dev/null + check_fail $? "Incorrectly succeded to insert filter which does not template" + + tc filter add dev $h2 ingress chain 1 protocol ip pref 1 handle 1101 \ + flower src_mac $h2mac action drop + check_err $? "Failed to insert filter which fits template" + + tc filter add dev $h2 ingress chain 1 protocol ip pref 1 handle 1102 \ + flower dst_mac $h2mac action drop &> /dev/null + check_fail $? "Incorrectly succeded to insert filter which does not template" + + tc filter del dev $h2 ingress chain 1 protocol ip pref 1 handle 1102 \ + flower &> /dev/null + tc filter del dev $h2 ingress chain 1 protocol ip pref 1 handle 1101 \ + flower &> /dev/null + + tc filter del dev $h2 ingress protocol ip pref 1 handle 1102 \ + flower &> /dev/null + tc filter del dev $h2 ingress protocol ip pref 1 handle 1101 \ + flower &> /dev/null + + tc chain del dev $h2 ingress chain 1 + tc chain del dev $h2 ingress + + log_test "template filter fits" +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + h2=${NETIFS[p2]} + h1mac=$(mac_get $h1) + h2mac=$(mac_get $h2) + + vrf_prepare + + h1_create + h2_create +} + +cleanup() +{ + pre_cleanup + + h2_destroy + h1_destroy + + vrf_cleanup +} + +check_tc_chain_support + +trap cleanup EXIT + +setup_prepare +setup_wait + +tests_run + +tc_offload_check +if [[ $? -ne 0 ]]; then + log_info "Could not test offloaded functionality" +else + tcflags="skip_sw" + tests_run +fi + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/tc_common.sh b/tools/testing/selftests/net/forwarding/tc_common.sh new file mode 100644 index 000000000..9d3b64a2a --- /dev/null +++ b/tools/testing/selftests/net/forwarding/tc_common.sh @@ -0,0 +1,25 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +CHECK_TC="yes" + +tc_check_packets() +{ + local id=$1 + local handle=$2 + local count=$3 + local ret + + output="$(tc -j -s filter show $id)" + # workaround the jq bug which causes jq to return 0 in case input is "" + ret=$? + if [[ $ret -ne 0 ]]; then + return $ret + fi + echo $output | \ + jq -e ".[] \ + | select(.options.handle == $handle) \ + | select(.options.actions[0].stats.packets == $count)" \ + &> /dev/null + return $? +} diff --git a/tools/testing/selftests/net/forwarding/tc_flower.sh b/tools/testing/selftests/net/forwarding/tc_flower.sh new file mode 100755 index 000000000..20d1077e5 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/tc_flower.sh @@ -0,0 +1,260 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +ALL_TESTS="match_dst_mac_test match_src_mac_test match_dst_ip_test \ + match_src_ip_test match_ip_flags_test" +NUM_NETIFS=2 +source tc_common.sh +source lib.sh + +tcflags="skip_hw" + +h1_create() +{ + simple_if_init $h1 192.0.2.1/24 198.51.100.1/24 +} + +h1_destroy() +{ + simple_if_fini $h1 192.0.2.1/24 198.51.100.1/24 +} + +h2_create() +{ + simple_if_init $h2 192.0.2.2/24 198.51.100.2/24 + tc qdisc add dev $h2 clsact +} + +h2_destroy() +{ + tc qdisc del dev $h2 clsact + simple_if_fini $h2 192.0.2.2/24 198.51.100.2/24 +} + +match_dst_mac_test() +{ + local dummy_mac=de:ad:be:ef:aa:aa + + RET=0 + + tc filter add dev $h2 ingress protocol ip pref 1 handle 101 flower \ + $tcflags dst_mac $dummy_mac action drop + tc filter add dev $h2 ingress protocol ip pref 2 handle 102 flower \ + $tcflags dst_mac $h2mac action drop + + $MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip -q + + tc_check_packets "dev $h2 ingress" 101 1 + check_fail $? "Matched on a wrong filter" + + tc_check_packets "dev $h2 ingress" 102 1 + check_err $? "Did not match on correct filter" + + tc filter del dev $h2 ingress protocol ip pref 1 handle 101 flower + tc filter del dev $h2 ingress protocol ip pref 2 handle 102 flower + + log_test "dst_mac match ($tcflags)" +} + +match_src_mac_test() +{ + local dummy_mac=de:ad:be:ef:aa:aa + + RET=0 + + tc filter add dev $h2 ingress protocol ip pref 1 handle 101 flower \ + $tcflags src_mac $dummy_mac action drop + tc filter add dev $h2 ingress protocol ip pref 2 handle 102 flower \ + $tcflags src_mac $h1mac action drop + + $MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip -q + + tc_check_packets "dev $h2 ingress" 101 1 + check_fail $? "Matched on a wrong filter" + + tc_check_packets "dev $h2 ingress" 102 1 + check_err $? "Did not match on correct filter" + + tc filter del dev $h2 ingress protocol ip pref 1 handle 101 flower + tc filter del dev $h2 ingress protocol ip pref 2 handle 102 flower + + log_test "src_mac match ($tcflags)" +} + +match_dst_ip_test() +{ + RET=0 + + tc filter add dev $h2 ingress protocol ip pref 1 handle 101 flower \ + $tcflags dst_ip 198.51.100.2 action drop + tc filter add dev $h2 ingress protocol ip pref 2 handle 102 flower \ + $tcflags dst_ip 192.0.2.2 action drop + tc filter add dev $h2 ingress protocol ip pref 3 handle 103 flower \ + $tcflags dst_ip 192.0.2.0/24 action drop + + $MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip -q + + tc_check_packets "dev $h2 ingress" 101 1 + check_fail $? "Matched on a wrong filter" + + tc_check_packets "dev $h2 ingress" 102 1 + check_err $? "Did not match on correct filter" + + tc filter del dev $h2 ingress protocol ip pref 2 handle 102 flower + + $MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip -q + + tc_check_packets "dev $h2 ingress" 103 1 + check_err $? "Did not match on correct filter with mask" + + tc filter del dev $h2 ingress protocol ip pref 1 handle 101 flower + tc filter del dev $h2 ingress protocol ip pref 3 handle 103 flower + + log_test "dst_ip match ($tcflags)" +} + +match_src_ip_test() +{ + RET=0 + + tc filter add dev $h2 ingress protocol ip pref 1 handle 101 flower \ + $tcflags src_ip 198.51.100.1 action drop + tc filter add dev $h2 ingress protocol ip pref 2 handle 102 flower \ + $tcflags src_ip 192.0.2.1 action drop + tc filter add dev $h2 ingress protocol ip pref 3 handle 103 flower \ + $tcflags src_ip 192.0.2.0/24 action drop + + $MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip -q + + tc_check_packets "dev $h2 ingress" 101 1 + check_fail $? "Matched on a wrong filter" + + tc_check_packets "dev $h2 ingress" 102 1 + check_err $? "Did not match on correct filter" + + tc filter del dev $h2 ingress protocol ip pref 2 handle 102 flower + + $MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip -q + + tc_check_packets "dev $h2 ingress" 103 1 + check_err $? "Did not match on correct filter with mask" + + tc filter del dev $h2 ingress protocol ip pref 1 handle 101 flower + tc filter del dev $h2 ingress protocol ip pref 3 handle 103 flower + + log_test "src_ip match ($tcflags)" +} + +match_ip_flags_test() +{ + RET=0 + + tc filter add dev $h2 ingress protocol ip pref 1 handle 101 flower \ + $tcflags ip_flags frag action continue + tc filter add dev $h2 ingress protocol ip pref 2 handle 102 flower \ + $tcflags ip_flags firstfrag action continue + tc filter add dev $h2 ingress protocol ip pref 3 handle 103 flower \ + $tcflags ip_flags nofirstfrag action continue + tc filter add dev $h2 ingress protocol ip pref 4 handle 104 flower \ + $tcflags ip_flags nofrag action drop + + $MZ $h1 -c 1 -p 1000 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip "frag=0" -q + + tc_check_packets "dev $h2 ingress" 101 1 + check_fail $? "Matched on wrong frag filter (nofrag)" + + tc_check_packets "dev $h2 ingress" 102 1 + check_fail $? "Matched on wrong firstfrag filter (nofrag)" + + tc_check_packets "dev $h2 ingress" 103 1 + check_err $? "Did not match on nofirstfrag filter (nofrag) " + + tc_check_packets "dev $h2 ingress" 104 1 + check_err $? "Did not match on nofrag filter (nofrag)" + + $MZ $h1 -c 1 -p 1000 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip "frag=0,mf" -q + + tc_check_packets "dev $h2 ingress" 101 1 + check_err $? "Did not match on frag filter (1stfrag)" + + tc_check_packets "dev $h2 ingress" 102 1 + check_err $? "Did not match fistfrag filter (1stfrag)" + + tc_check_packets "dev $h2 ingress" 103 1 + check_err $? "Matched on wrong nofirstfrag filter (1stfrag)" + + tc_check_packets "dev $h2 ingress" 104 1 + check_err $? "Match on wrong nofrag filter (1stfrag)" + + $MZ $h1 -c 1 -p 1000 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip "frag=256,mf" -q + $MZ $h1 -c 1 -p 1000 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip "frag=256" -q + + tc_check_packets "dev $h2 ingress" 101 3 + check_err $? "Did not match on frag filter (no1stfrag)" + + tc_check_packets "dev $h2 ingress" 102 1 + check_err $? "Matched on wrong firstfrag filter (no1stfrag)" + + tc_check_packets "dev $h2 ingress" 103 3 + check_err $? "Did not match on nofirstfrag filter (no1stfrag)" + + tc_check_packets "dev $h2 ingress" 104 1 + check_err $? "Matched on nofrag filter (no1stfrag)" + + tc filter del dev $h2 ingress protocol ip pref 1 handle 101 flower + tc filter del dev $h2 ingress protocol ip pref 2 handle 102 flower + tc filter del dev $h2 ingress protocol ip pref 3 handle 103 flower + tc filter del dev $h2 ingress protocol ip pref 4 handle 104 flower + + log_test "ip_flags match ($tcflags)" +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + h2=${NETIFS[p2]} + h1mac=$(mac_get $h1) + h2mac=$(mac_get $h2) + + vrf_prepare + + h1_create + h2_create +} + +cleanup() +{ + pre_cleanup + + h2_destroy + h1_destroy + + vrf_cleanup +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tests_run + +tc_offload_check +if [[ $? -ne 0 ]]; then + log_info "Could not test offloaded functionality" +else + tcflags="skip_sw" + tests_run +fi + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/tc_shblocks.sh b/tools/testing/selftests/net/forwarding/tc_shblocks.sh new file mode 100755 index 000000000..9826a446e --- /dev/null +++ b/tools/testing/selftests/net/forwarding/tc_shblocks.sh @@ -0,0 +1,125 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +ALL_TESTS="shared_block_test" +NUM_NETIFS=4 +source tc_common.sh +source lib.sh + +tcflags="skip_hw" + +h1_create() +{ + simple_if_init $h1 192.0.2.1/24 +} + +h1_destroy() +{ + simple_if_fini $h1 192.0.2.1/24 +} + +h2_create() +{ + simple_if_init $h2 192.0.2.1/24 +} + +h2_destroy() +{ + simple_if_fini $h2 192.0.2.1/24 +} + +switch_create() +{ + simple_if_init $swp1 192.0.2.2/24 + tc qdisc add dev $swp1 ingress_block 22 egress_block 23 clsact + + simple_if_init $swp2 192.0.2.2/24 + tc qdisc add dev $swp2 ingress_block 22 egress_block 23 clsact +} + +switch_destroy() +{ + tc qdisc del dev $swp2 clsact + simple_if_fini $swp2 192.0.2.2/24 + + tc qdisc del dev $swp1 clsact + simple_if_fini $swp1 192.0.2.2/24 +} + +shared_block_test() +{ + RET=0 + + tc filter add block 22 protocol ip pref 1 handle 101 flower \ + $tcflags dst_ip 192.0.2.2 action drop + + $MZ $h1 -c 1 -p 64 -a $h1mac -b $swmac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip -q + + tc_check_packets "block 22" 101 1 + check_err $? "Did not match first incoming packet on a block" + + $MZ $h2 -c 1 -p 64 -a $h2mac -b $swmac -A 192.0.2.1 -B 192.0.2.2 \ + -t ip -q + + tc_check_packets "block 22" 101 2 + check_err $? "Did not match second incoming packet on a block" + + tc filter del block 22 protocol ip pref 1 handle 101 flower + + log_test "shared block ($tcflags)" +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + h1mac=$(mac_get $h1) + h2mac=$(mac_get $h2) + + swmac=$(mac_get $swp1) + swp2origmac=$(mac_get $swp2) + ip link set $swp2 address $swmac + + vrf_prepare + + h1_create + h2_create + switch_create +} + +cleanup() +{ + pre_cleanup + + switch_destroy + h2_destroy + h1_destroy + + vrf_cleanup + + ip link set $swp2 address $swp2origmac +} + +check_tc_shblock_support + +trap cleanup EXIT + +setup_prepare +setup_wait + +tests_run + +tc_offload_check +if [[ $? -ne 0 ]]; then + log_info "Could not test offloaded functionality" +else + tcflags="skip_sw" + tests_run +fi + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/in_netns.sh b/tools/testing/selftests/net/in_netns.sh new file mode 100755 index 000000000..88795b510 --- /dev/null +++ b/tools/testing/selftests/net/in_netns.sh @@ -0,0 +1,23 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# +# Execute a subprocess in a network namespace + +set -e + +readonly NETNS="ns-$(mktemp -u XXXXXX)" + +setup() { + ip netns add "${NETNS}" + ip -netns "${NETNS}" link set lo up +} + +cleanup() { + ip netns del "${NETNS}" +} + +trap cleanup EXIT +setup + +ip netns exec "${NETNS}" "$@" +exit "$?" diff --git a/tools/testing/selftests/net/ip6_gre_headroom.sh b/tools/testing/selftests/net/ip6_gre_headroom.sh new file mode 100755 index 000000000..5b41e8bb6 --- /dev/null +++ b/tools/testing/selftests/net/ip6_gre_headroom.sh @@ -0,0 +1,65 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# Test that enough headroom is reserved for the first packet passing through an +# IPv6 GRE-like netdevice. + +setup_prepare() +{ + ip link add h1 type veth peer name swp1 + ip link add h3 type veth peer name swp3 + + ip link set dev h1 up + ip address add 192.0.2.1/28 dev h1 + + ip link add dev vh3 type vrf table 20 + ip link set dev h3 master vh3 + ip link set dev vh3 up + ip link set dev h3 up + + ip link set dev swp3 up + ip address add dev swp3 2001:db8:2::1/64 + ip address add dev swp3 2001:db8:2::3/64 + + ip link set dev swp1 up + tc qdisc add dev swp1 clsact + + ip link add name er6 type ip6erspan \ + local 2001:db8:2::1 remote 2001:db8:2::2 oseq okey 123 + ip link set dev er6 up + + ip link add name gt6 type ip6gretap \ + local 2001:db8:2::3 remote 2001:db8:2::4 + ip link set dev gt6 up + + sleep 1 +} + +cleanup() +{ + ip link del dev gt6 + ip link del dev er6 + ip link del dev swp1 + ip link del dev swp3 + ip link del dev vh3 +} + +test_headroom() +{ + local type=$1; shift + local tundev=$1; shift + + tc filter add dev swp1 ingress pref 1000 matchall skip_hw \ + action mirred egress mirror dev $tundev + ping -I h1 192.0.2.2 -c 1 -w 2 &> /dev/null + tc filter del dev swp1 ingress pref 1000 + + # If it doesn't panic, it passes. + printf "TEST: %-60s [PASS]\n" "$type headroom" +} + +trap cleanup EXIT + +setup_prepare +test_headroom ip6gretap gt6 +test_headroom ip6erspan er6 diff --git a/tools/testing/selftests/net/msg_zerocopy.c b/tools/testing/selftests/net/msg_zerocopy.c new file mode 100644 index 000000000..c53959193 --- /dev/null +++ b/tools/testing/selftests/net/msg_zerocopy.c @@ -0,0 +1,810 @@ +/* Evaluate MSG_ZEROCOPY + * + * Send traffic between two processes over one of the supported + * protocols and modes: + * + * PF_INET/PF_INET6 + * - SOCK_STREAM + * - SOCK_DGRAM + * - SOCK_DGRAM with UDP_CORK + * - SOCK_RAW + * - SOCK_RAW with IP_HDRINCL + * + * PF_PACKET + * - SOCK_DGRAM + * - SOCK_RAW + * + * PF_RDS + * - SOCK_SEQPACKET + * + * Start this program on two connected hosts, one in send mode and + * the other with option '-r' to put it in receiver mode. + * + * If zerocopy mode ('-z') is enabled, the sender will verify that + * the kernel queues completions on the error queue for all zerocopy + * transfers. + */ + +#define _GNU_SOURCE + +#include <arpa/inet.h> +#include <error.h> +#include <errno.h> +#include <limits.h> +#include <linux/errqueue.h> +#include <linux/if_packet.h> +#include <linux/ipv6.h> +#include <linux/socket.h> +#include <linux/sockios.h> +#include <net/ethernet.h> +#include <net/if.h> +#include <netinet/ip.h> +#include <netinet/ip6.h> +#include <netinet/tcp.h> +#include <netinet/udp.h> +#include <poll.h> +#include <sched.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <sys/ioctl.h> +#include <sys/socket.h> +#include <sys/stat.h> +#include <sys/time.h> +#include <sys/types.h> +#include <sys/wait.h> +#include <unistd.h> +#include <linux/rds.h> + +#ifndef SO_EE_ORIGIN_ZEROCOPY +#define SO_EE_ORIGIN_ZEROCOPY 5 +#endif + +#ifndef SO_ZEROCOPY +#define SO_ZEROCOPY 60 +#endif + +#ifndef SO_EE_CODE_ZEROCOPY_COPIED +#define SO_EE_CODE_ZEROCOPY_COPIED 1 +#endif + +#ifndef MSG_ZEROCOPY +#define MSG_ZEROCOPY 0x4000000 +#endif + +static int cfg_cork; +static bool cfg_cork_mixed; +static int cfg_cpu = -1; /* default: pin to last cpu */ +static int cfg_family = PF_UNSPEC; +static int cfg_ifindex = 1; +static int cfg_payload_len; +static int cfg_port = 8000; +static bool cfg_rx; +static int cfg_runtime_ms = 4200; +static int cfg_verbose; +static int cfg_waittime_ms = 500; +static bool cfg_zerocopy; + +static socklen_t cfg_alen; +static struct sockaddr_storage cfg_dst_addr; +static struct sockaddr_storage cfg_src_addr; + +static char payload[IP_MAXPACKET]; +static long packets, bytes, completions, expected_completions; +static int zerocopied = -1; +static uint32_t next_completion; + +static unsigned long gettimeofday_ms(void) +{ + struct timeval tv; + + gettimeofday(&tv, NULL); + return (tv.tv_sec * 1000) + (tv.tv_usec / 1000); +} + +static uint16_t get_ip_csum(const uint16_t *start, int num_words) +{ + unsigned long sum = 0; + int i; + + for (i = 0; i < num_words; i++) + sum += start[i]; + + while (sum >> 16) + sum = (sum & 0xFFFF) + (sum >> 16); + + return ~sum; +} + +static int do_setcpu(int cpu) +{ + cpu_set_t mask; + + CPU_ZERO(&mask); + CPU_SET(cpu, &mask); + if (sched_setaffinity(0, sizeof(mask), &mask)) + fprintf(stderr, "cpu: unable to pin, may increase variance.\n"); + else if (cfg_verbose) + fprintf(stderr, "cpu: %u\n", cpu); + + return 0; +} + +static void do_setsockopt(int fd, int level, int optname, int val) +{ + if (setsockopt(fd, level, optname, &val, sizeof(val))) + error(1, errno, "setsockopt %d.%d: %d", level, optname, val); +} + +static int do_poll(int fd, int events) +{ + struct pollfd pfd; + int ret; + + pfd.events = events; + pfd.revents = 0; + pfd.fd = fd; + + ret = poll(&pfd, 1, cfg_waittime_ms); + if (ret == -1) + error(1, errno, "poll"); + + return ret && (pfd.revents & events); +} + +static int do_accept(int fd) +{ + int fda = fd; + + fd = accept(fda, NULL, NULL); + if (fd == -1) + error(1, errno, "accept"); + if (close(fda)) + error(1, errno, "close listen sock"); + + return fd; +} + +static void add_zcopy_cookie(struct msghdr *msg, uint32_t cookie) +{ + struct cmsghdr *cm; + + if (!msg->msg_control) + error(1, errno, "NULL cookie"); + cm = (void *)msg->msg_control; + cm->cmsg_len = CMSG_LEN(sizeof(cookie)); + cm->cmsg_level = SOL_RDS; + cm->cmsg_type = RDS_CMSG_ZCOPY_COOKIE; + memcpy(CMSG_DATA(cm), &cookie, sizeof(cookie)); +} + +static bool do_sendmsg(int fd, struct msghdr *msg, bool do_zerocopy, int domain) +{ + int ret, len, i, flags; + static uint32_t cookie; + char ckbuf[CMSG_SPACE(sizeof(cookie))]; + + len = 0; + for (i = 0; i < msg->msg_iovlen; i++) + len += msg->msg_iov[i].iov_len; + + flags = MSG_DONTWAIT; + if (do_zerocopy) { + flags |= MSG_ZEROCOPY; + if (domain == PF_RDS) { + memset(&msg->msg_control, 0, sizeof(msg->msg_control)); + msg->msg_controllen = CMSG_SPACE(sizeof(cookie)); + msg->msg_control = (struct cmsghdr *)ckbuf; + add_zcopy_cookie(msg, ++cookie); + } + } + + ret = sendmsg(fd, msg, flags); + if (ret == -1 && errno == EAGAIN) + return false; + if (ret == -1) + error(1, errno, "send"); + if (cfg_verbose && ret != len) + fprintf(stderr, "send: ret=%u != %u\n", ret, len); + + if (len) { + packets++; + bytes += ret; + if (do_zerocopy && ret) + expected_completions++; + } + if (do_zerocopy && domain == PF_RDS) { + msg->msg_control = NULL; + msg->msg_controllen = 0; + } + + return true; +} + +static void do_sendmsg_corked(int fd, struct msghdr *msg) +{ + bool do_zerocopy = cfg_zerocopy; + int i, payload_len, extra_len; + + /* split up the packet. for non-multiple, make first buffer longer */ + payload_len = cfg_payload_len / cfg_cork; + extra_len = cfg_payload_len - (cfg_cork * payload_len); + + do_setsockopt(fd, IPPROTO_UDP, UDP_CORK, 1); + + for (i = 0; i < cfg_cork; i++) { + + /* in mixed-frags mode, alternate zerocopy and copy frags + * start with non-zerocopy, to ensure attach later works + */ + if (cfg_cork_mixed) + do_zerocopy = (i & 1); + + msg->msg_iov[0].iov_len = payload_len + extra_len; + extra_len = 0; + + do_sendmsg(fd, msg, do_zerocopy, + (cfg_dst_addr.ss_family == AF_INET ? + PF_INET : PF_INET6)); + } + + do_setsockopt(fd, IPPROTO_UDP, UDP_CORK, 0); +} + +static int setup_iph(struct iphdr *iph, uint16_t payload_len) +{ + struct sockaddr_in *daddr = (void *) &cfg_dst_addr; + struct sockaddr_in *saddr = (void *) &cfg_src_addr; + + memset(iph, 0, sizeof(*iph)); + + iph->version = 4; + iph->tos = 0; + iph->ihl = 5; + iph->ttl = 2; + iph->saddr = saddr->sin_addr.s_addr; + iph->daddr = daddr->sin_addr.s_addr; + iph->protocol = IPPROTO_EGP; + iph->tot_len = htons(sizeof(*iph) + payload_len); + iph->check = get_ip_csum((void *) iph, iph->ihl << 1); + + return sizeof(*iph); +} + +static int setup_ip6h(struct ipv6hdr *ip6h, uint16_t payload_len) +{ + struct sockaddr_in6 *daddr = (void *) &cfg_dst_addr; + struct sockaddr_in6 *saddr = (void *) &cfg_src_addr; + + memset(ip6h, 0, sizeof(*ip6h)); + + ip6h->version = 6; + ip6h->payload_len = htons(payload_len); + ip6h->nexthdr = IPPROTO_EGP; + ip6h->hop_limit = 2; + ip6h->saddr = saddr->sin6_addr; + ip6h->daddr = daddr->sin6_addr; + + return sizeof(*ip6h); +} + + +static void setup_sockaddr(int domain, const char *str_addr, + struct sockaddr_storage *sockaddr) +{ + struct sockaddr_in6 *addr6 = (void *) sockaddr; + struct sockaddr_in *addr4 = (void *) sockaddr; + + switch (domain) { + case PF_INET: + memset(addr4, 0, sizeof(*addr4)); + addr4->sin_family = AF_INET; + addr4->sin_port = htons(cfg_port); + if (str_addr && + inet_pton(AF_INET, str_addr, &(addr4->sin_addr)) != 1) + error(1, 0, "ipv4 parse error: %s", str_addr); + break; + case PF_INET6: + memset(addr6, 0, sizeof(*addr6)); + addr6->sin6_family = AF_INET6; + addr6->sin6_port = htons(cfg_port); + if (str_addr && + inet_pton(AF_INET6, str_addr, &(addr6->sin6_addr)) != 1) + error(1, 0, "ipv6 parse error: %s", str_addr); + break; + default: + error(1, 0, "illegal domain"); + } +} + +static int do_setup_tx(int domain, int type, int protocol) +{ + int fd; + + fd = socket(domain, type, protocol); + if (fd == -1) + error(1, errno, "socket t"); + + do_setsockopt(fd, SOL_SOCKET, SO_SNDBUF, 1 << 21); + if (cfg_zerocopy) + do_setsockopt(fd, SOL_SOCKET, SO_ZEROCOPY, 1); + + if (domain != PF_PACKET && domain != PF_RDS) + if (connect(fd, (void *) &cfg_dst_addr, cfg_alen)) + error(1, errno, "connect"); + + if (domain == PF_RDS) { + if (bind(fd, (void *) &cfg_src_addr, cfg_alen)) + error(1, errno, "bind"); + } + + return fd; +} + +static uint32_t do_process_zerocopy_cookies(struct rds_zcopy_cookies *ck) +{ + int i; + + if (ck->num > RDS_MAX_ZCOOKIES) + error(1, 0, "Returned %d cookies, max expected %d\n", + ck->num, RDS_MAX_ZCOOKIES); + for (i = 0; i < ck->num; i++) + if (cfg_verbose >= 2) + fprintf(stderr, "%d\n", ck->cookies[i]); + return ck->num; +} + +static bool do_recvmsg_completion(int fd) +{ + char cmsgbuf[CMSG_SPACE(sizeof(struct rds_zcopy_cookies))]; + struct rds_zcopy_cookies *ck; + struct cmsghdr *cmsg; + struct msghdr msg; + bool ret = false; + + memset(&msg, 0, sizeof(msg)); + msg.msg_control = cmsgbuf; + msg.msg_controllen = sizeof(cmsgbuf); + + if (recvmsg(fd, &msg, MSG_DONTWAIT)) + return ret; + + if (msg.msg_flags & MSG_CTRUNC) + error(1, errno, "recvmsg notification: truncated"); + + for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) { + if (cmsg->cmsg_level == SOL_RDS && + cmsg->cmsg_type == RDS_CMSG_ZCOPY_COMPLETION) { + + ck = (struct rds_zcopy_cookies *)CMSG_DATA(cmsg); + completions += do_process_zerocopy_cookies(ck); + ret = true; + break; + } + error(0, 0, "ignoring cmsg at level %d type %d\n", + cmsg->cmsg_level, cmsg->cmsg_type); + } + return ret; +} + +static bool do_recv_completion(int fd, int domain) +{ + struct sock_extended_err *serr; + struct msghdr msg = {}; + struct cmsghdr *cm; + uint32_t hi, lo, range; + int ret, zerocopy; + char control[100]; + + if (domain == PF_RDS) + return do_recvmsg_completion(fd); + + msg.msg_control = control; + msg.msg_controllen = sizeof(control); + + ret = recvmsg(fd, &msg, MSG_ERRQUEUE); + if (ret == -1 && errno == EAGAIN) + return false; + if (ret == -1) + error(1, errno, "recvmsg notification"); + if (msg.msg_flags & MSG_CTRUNC) + error(1, errno, "recvmsg notification: truncated"); + + cm = CMSG_FIRSTHDR(&msg); + if (!cm) + error(1, 0, "cmsg: no cmsg"); + if (!((cm->cmsg_level == SOL_IP && cm->cmsg_type == IP_RECVERR) || + (cm->cmsg_level == SOL_IPV6 && cm->cmsg_type == IPV6_RECVERR) || + (cm->cmsg_level == SOL_PACKET && cm->cmsg_type == PACKET_TX_TIMESTAMP))) + error(1, 0, "serr: wrong type: %d.%d", + cm->cmsg_level, cm->cmsg_type); + + serr = (void *) CMSG_DATA(cm); + + if (serr->ee_origin != SO_EE_ORIGIN_ZEROCOPY) + error(1, 0, "serr: wrong origin: %u", serr->ee_origin); + if (serr->ee_errno != 0) + error(1, 0, "serr: wrong error code: %u", serr->ee_errno); + + hi = serr->ee_data; + lo = serr->ee_info; + range = hi - lo + 1; + + /* Detect notification gaps. These should not happen often, if at all. + * Gaps can occur due to drops, reordering and retransmissions. + */ + if (lo != next_completion) + fprintf(stderr, "gap: %u..%u does not append to %u\n", + lo, hi, next_completion); + next_completion = hi + 1; + + zerocopy = !(serr->ee_code & SO_EE_CODE_ZEROCOPY_COPIED); + if (zerocopied == -1) + zerocopied = zerocopy; + else if (zerocopied != zerocopy) { + fprintf(stderr, "serr: inconsistent\n"); + zerocopied = zerocopy; + } + + if (cfg_verbose >= 2) + fprintf(stderr, "completed: %u (h=%u l=%u)\n", + range, hi, lo); + + completions += range; + return true; +} + +/* Read all outstanding messages on the errqueue */ +static void do_recv_completions(int fd, int domain) +{ + while (do_recv_completion(fd, domain)) {} +} + +/* Wait for all remaining completions on the errqueue */ +static void do_recv_remaining_completions(int fd, int domain) +{ + int64_t tstop = gettimeofday_ms() + cfg_waittime_ms; + + while (completions < expected_completions && + gettimeofday_ms() < tstop) { + if (do_poll(fd, domain == PF_RDS ? POLLIN : POLLERR)) + do_recv_completions(fd, domain); + } + + if (completions < expected_completions) + fprintf(stderr, "missing notifications: %lu < %lu\n", + completions, expected_completions); +} + +static void do_tx(int domain, int type, int protocol) +{ + struct iovec iov[3] = { {0} }; + struct sockaddr_ll laddr; + struct msghdr msg = {0}; + struct ethhdr eth; + union { + struct ipv6hdr ip6h; + struct iphdr iph; + } nh; + uint64_t tstop; + int fd; + + fd = do_setup_tx(domain, type, protocol); + + if (domain == PF_PACKET) { + uint16_t proto = cfg_family == PF_INET ? ETH_P_IP : ETH_P_IPV6; + + /* sock_raw passes ll header as data */ + if (type == SOCK_RAW) { + memset(eth.h_dest, 0x06, ETH_ALEN); + memset(eth.h_source, 0x02, ETH_ALEN); + eth.h_proto = htons(proto); + iov[0].iov_base = ð + iov[0].iov_len = sizeof(eth); + msg.msg_iovlen++; + } + + /* both sock_raw and sock_dgram expect name */ + memset(&laddr, 0, sizeof(laddr)); + laddr.sll_family = AF_PACKET; + laddr.sll_ifindex = cfg_ifindex; + laddr.sll_protocol = htons(proto); + laddr.sll_halen = ETH_ALEN; + + memset(laddr.sll_addr, 0x06, ETH_ALEN); + + msg.msg_name = &laddr; + msg.msg_namelen = sizeof(laddr); + } + + /* packet and raw sockets with hdrincl must pass network header */ + if (domain == PF_PACKET || protocol == IPPROTO_RAW) { + if (cfg_family == PF_INET) + iov[1].iov_len = setup_iph(&nh.iph, cfg_payload_len); + else + iov[1].iov_len = setup_ip6h(&nh.ip6h, cfg_payload_len); + + iov[1].iov_base = (void *) &nh; + msg.msg_iovlen++; + } + + if (domain == PF_RDS) { + msg.msg_name = &cfg_dst_addr; + msg.msg_namelen = (cfg_dst_addr.ss_family == AF_INET ? + sizeof(struct sockaddr_in) : + sizeof(struct sockaddr_in6)); + } + + iov[2].iov_base = payload; + iov[2].iov_len = cfg_payload_len; + msg.msg_iovlen++; + msg.msg_iov = &iov[3 - msg.msg_iovlen]; + + tstop = gettimeofday_ms() + cfg_runtime_ms; + do { + if (cfg_cork) + do_sendmsg_corked(fd, &msg); + else + do_sendmsg(fd, &msg, cfg_zerocopy, domain); + + while (!do_poll(fd, POLLOUT)) { + if (cfg_zerocopy) + do_recv_completions(fd, domain); + } + + } while (gettimeofday_ms() < tstop); + + if (cfg_zerocopy) + do_recv_remaining_completions(fd, domain); + + if (close(fd)) + error(1, errno, "close"); + + fprintf(stderr, "tx=%lu (%lu MB) txc=%lu zc=%c\n", + packets, bytes >> 20, completions, + zerocopied == 1 ? 'y' : 'n'); +} + +static int do_setup_rx(int domain, int type, int protocol) +{ + int fd; + + /* If tx over PF_PACKET, rx over PF_INET(6)/SOCK_RAW, + * to recv the only copy of the packet, not a clone + */ + if (domain == PF_PACKET) + error(1, 0, "Use PF_INET/SOCK_RAW to read"); + + if (type == SOCK_RAW && protocol == IPPROTO_RAW) + error(1, 0, "IPPROTO_RAW: not supported on Rx"); + + fd = socket(domain, type, protocol); + if (fd == -1) + error(1, errno, "socket r"); + + do_setsockopt(fd, SOL_SOCKET, SO_RCVBUF, 1 << 21); + do_setsockopt(fd, SOL_SOCKET, SO_RCVLOWAT, 1 << 16); + do_setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, 1); + + if (bind(fd, (void *) &cfg_dst_addr, cfg_alen)) + error(1, errno, "bind"); + + if (type == SOCK_STREAM) { + if (listen(fd, 1)) + error(1, errno, "listen"); + fd = do_accept(fd); + } + + return fd; +} + +/* Flush all outstanding bytes for the tcp receive queue */ +static void do_flush_tcp(int fd) +{ + int ret; + + /* MSG_TRUNC flushes up to len bytes */ + ret = recv(fd, NULL, 1 << 21, MSG_TRUNC | MSG_DONTWAIT); + if (ret == -1 && errno == EAGAIN) + return; + if (ret == -1) + error(1, errno, "flush"); + if (!ret) + return; + + packets++; + bytes += ret; +} + +/* Flush all outstanding datagrams. Verify first few bytes of each. */ +static void do_flush_datagram(int fd, int type) +{ + int ret, off = 0; + char buf[64]; + + /* MSG_TRUNC will return full datagram length */ + ret = recv(fd, buf, sizeof(buf), MSG_DONTWAIT | MSG_TRUNC); + if (ret == -1 && errno == EAGAIN) + return; + + /* raw ipv4 return with header, raw ipv6 without */ + if (cfg_family == PF_INET && type == SOCK_RAW) { + off += sizeof(struct iphdr); + ret -= sizeof(struct iphdr); + } + + if (ret == -1) + error(1, errno, "recv"); + if (ret != cfg_payload_len) + error(1, 0, "recv: ret=%u != %u", ret, cfg_payload_len); + if (ret > sizeof(buf) - off) + ret = sizeof(buf) - off; + if (memcmp(buf + off, payload, ret)) + error(1, 0, "recv: data mismatch"); + + packets++; + bytes += cfg_payload_len; +} + +static void do_rx(int domain, int type, int protocol) +{ + uint64_t tstop; + int fd; + + fd = do_setup_rx(domain, type, protocol); + + tstop = gettimeofday_ms() + cfg_runtime_ms; + do { + if (type == SOCK_STREAM) + do_flush_tcp(fd); + else + do_flush_datagram(fd, type); + + do_poll(fd, POLLIN); + + } while (gettimeofday_ms() < tstop); + + if (close(fd)) + error(1, errno, "close"); + + fprintf(stderr, "rx=%lu (%lu MB)\n", packets, bytes >> 20); +} + +static void do_test(int domain, int type, int protocol) +{ + int i; + + if (cfg_cork && (domain == PF_PACKET || type != SOCK_DGRAM)) + error(1, 0, "can only cork udp sockets"); + + do_setcpu(cfg_cpu); + + for (i = 0; i < IP_MAXPACKET; i++) + payload[i] = 'a' + (i % 26); + + if (cfg_rx) + do_rx(domain, type, protocol); + else + do_tx(domain, type, protocol); +} + +static void usage(const char *filepath) +{ + error(1, 0, "Usage: %s [options] <test>", filepath); +} + +static void parse_opts(int argc, char **argv) +{ + const int max_payload_len = sizeof(payload) - + sizeof(struct ipv6hdr) - + sizeof(struct tcphdr) - + 40 /* max tcp options */; + int c; + char *daddr = NULL, *saddr = NULL; + char *cfg_test; + + cfg_payload_len = max_payload_len; + + while ((c = getopt(argc, argv, "46c:C:D:i:mp:rs:S:t:vz")) != -1) { + switch (c) { + case '4': + if (cfg_family != PF_UNSPEC) + error(1, 0, "Pass one of -4 or -6"); + cfg_family = PF_INET; + cfg_alen = sizeof(struct sockaddr_in); + break; + case '6': + if (cfg_family != PF_UNSPEC) + error(1, 0, "Pass one of -4 or -6"); + cfg_family = PF_INET6; + cfg_alen = sizeof(struct sockaddr_in6); + break; + case 'c': + cfg_cork = strtol(optarg, NULL, 0); + break; + case 'C': + cfg_cpu = strtol(optarg, NULL, 0); + break; + case 'D': + daddr = optarg; + break; + case 'i': + cfg_ifindex = if_nametoindex(optarg); + if (cfg_ifindex == 0) + error(1, errno, "invalid iface: %s", optarg); + break; + case 'm': + cfg_cork_mixed = true; + break; + case 'p': + cfg_port = strtoul(optarg, NULL, 0); + break; + case 'r': + cfg_rx = true; + break; + case 's': + cfg_payload_len = strtoul(optarg, NULL, 0); + break; + case 'S': + saddr = optarg; + break; + case 't': + cfg_runtime_ms = 200 + strtoul(optarg, NULL, 10) * 1000; + break; + case 'v': + cfg_verbose++; + break; + case 'z': + cfg_zerocopy = true; + break; + } + } + + cfg_test = argv[argc - 1]; + if (strcmp(cfg_test, "rds") == 0) { + if (!daddr) + error(1, 0, "-D <server addr> required for PF_RDS\n"); + if (!cfg_rx && !saddr) + error(1, 0, "-S <client addr> required for PF_RDS\n"); + } + setup_sockaddr(cfg_family, daddr, &cfg_dst_addr); + setup_sockaddr(cfg_family, saddr, &cfg_src_addr); + + if (cfg_payload_len > max_payload_len) + error(1, 0, "-s: payload exceeds max (%d)", max_payload_len); + if (cfg_cork_mixed && (!cfg_zerocopy || !cfg_cork)) + error(1, 0, "-m: cork_mixed requires corking and zerocopy"); + + if (optind != argc - 1) + usage(argv[0]); +} + +int main(int argc, char **argv) +{ + const char *cfg_test; + + parse_opts(argc, argv); + + cfg_test = argv[argc - 1]; + + if (!strcmp(cfg_test, "packet")) + do_test(PF_PACKET, SOCK_RAW, 0); + else if (!strcmp(cfg_test, "packet_dgram")) + do_test(PF_PACKET, SOCK_DGRAM, 0); + else if (!strcmp(cfg_test, "raw")) + do_test(cfg_family, SOCK_RAW, IPPROTO_EGP); + else if (!strcmp(cfg_test, "raw_hdrincl")) + do_test(cfg_family, SOCK_RAW, IPPROTO_RAW); + else if (!strcmp(cfg_test, "tcp")) + do_test(cfg_family, SOCK_STREAM, 0); + else if (!strcmp(cfg_test, "udp")) + do_test(cfg_family, SOCK_DGRAM, 0); + else if (!strcmp(cfg_test, "rds")) + do_test(PF_RDS, SOCK_SEQPACKET, 0); + else + error(1, 0, "unknown cfg_test %s", cfg_test); + + return 0; +} diff --git a/tools/testing/selftests/net/msg_zerocopy.sh b/tools/testing/selftests/net/msg_zerocopy.sh new file mode 100755 index 000000000..c43c6debd --- /dev/null +++ b/tools/testing/selftests/net/msg_zerocopy.sh @@ -0,0 +1,120 @@ +#!/bin/bash +# +# Send data between two processes across namespaces +# Run twice: once without and once with zerocopy + +set -e + +readonly DEV="veth0" +readonly DEV_MTU=65535 +readonly BIN="./msg_zerocopy" + +readonly RAND="$(mktemp -u XXXXXX)" +readonly NSPREFIX="ns-${RAND}" +readonly NS1="${NSPREFIX}1" +readonly NS2="${NSPREFIX}2" + +readonly SADDR4='192.168.1.1' +readonly DADDR4='192.168.1.2' +readonly SADDR6='fd::1' +readonly DADDR6='fd::2' + +readonly path_sysctl_mem="net.core.optmem_max" + +# No arguments: automated test +if [[ "$#" -eq "0" ]]; then + $0 4 tcp -t 1 + $0 6 tcp -t 1 + echo "OK. All tests passed" + exit 0 +fi + +# Argument parsing +if [[ "$#" -lt "2" ]]; then + echo "Usage: $0 [4|6] [tcp|udp|raw|raw_hdrincl|packet|packet_dgram] <args>" + exit 1 +fi + +readonly IP="$1" +shift +readonly TXMODE="$1" +shift +readonly EXTRA_ARGS="$@" + +# Argument parsing: configure addresses +if [[ "${IP}" == "4" ]]; then + readonly SADDR="${SADDR4}" + readonly DADDR="${DADDR4}" +elif [[ "${IP}" == "6" ]]; then + readonly SADDR="${SADDR6}" + readonly DADDR="${DADDR6}" +else + echo "Invalid IP version ${IP}" + exit 1 +fi + +# Argument parsing: select receive mode +# +# This differs from send mode for +# - packet: use raw recv, because packet receives skb clones +# - raw_hdrinc: use raw recv, because hdrincl is a tx-only option +case "${TXMODE}" in +'packet' | 'packet_dgram' | 'raw_hdrincl') + RXMODE='raw' + ;; +*) + RXMODE="${TXMODE}" + ;; +esac + +# Start of state changes: install cleanup handler +save_sysctl_mem="$(sysctl -n ${path_sysctl_mem})" + +cleanup() { + ip netns del "${NS2}" + ip netns del "${NS1}" + sysctl -w -q "${path_sysctl_mem}=${save_sysctl_mem}" +} + +trap cleanup EXIT + +# Configure system settings +sysctl -w -q "${path_sysctl_mem}=1000000" + +# Create virtual ethernet pair between network namespaces +ip netns add "${NS1}" +ip netns add "${NS2}" + +ip link add "${DEV}" mtu "${DEV_MTU}" netns "${NS1}" type veth \ + peer name "${DEV}" mtu "${DEV_MTU}" netns "${NS2}" + +# Bring the devices up +ip -netns "${NS1}" link set "${DEV}" up +ip -netns "${NS2}" link set "${DEV}" up + +# Set fixed MAC addresses on the devices +ip -netns "${NS1}" link set dev "${DEV}" address 02:02:02:02:02:02 +ip -netns "${NS2}" link set dev "${DEV}" address 06:06:06:06:06:06 + +# Add fixed IP addresses to the devices +ip -netns "${NS1}" addr add 192.168.1.1/24 dev "${DEV}" +ip -netns "${NS2}" addr add 192.168.1.2/24 dev "${DEV}" +ip -netns "${NS1}" addr add fd::1/64 dev "${DEV}" nodad +ip -netns "${NS2}" addr add fd::2/64 dev "${DEV}" nodad + +# Optionally disable sg or csum offload to test edge cases +# ip netns exec "${NS1}" ethtool -K "${DEV}" sg off + +do_test() { + local readonly ARGS="$1" + + echo "ipv${IP} ${TXMODE} ${ARGS}" + ip netns exec "${NS2}" "${BIN}" "-${IP}" -i "${DEV}" -t 2 -C 2 -S "${SADDR}" -D "${DADDR}" ${ARGS} -r "${RXMODE}" & + sleep 0.2 + ip netns exec "${NS1}" "${BIN}" "-${IP}" -i "${DEV}" -t 1 -C 3 -S "${SADDR}" -D "${DADDR}" ${ARGS} "${TXMODE}" + wait +} + +do_test "${EXTRA_ARGS}" +do_test "-z ${EXTRA_ARGS}" +echo ok diff --git a/tools/testing/selftests/net/netdevice.sh b/tools/testing/selftests/net/netdevice.sh new file mode 100755 index 000000000..e3afcb424 --- /dev/null +++ b/tools/testing/selftests/net/netdevice.sh @@ -0,0 +1,205 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# +# This test is for checking network interface +# For the moment it tests only ethernet interface (but wifi could be easily added) +# +# We assume that all network driver are loaded +# if not they probably have failed earlier in the boot process and their logged error will be catched by another test +# + +# Kselftest framework requirement - SKIP code is 4. +ksft_skip=4 + +# this function will try to up the interface +# if already up, nothing done +# arg1: network interface name +kci_net_start() +{ + netdev=$1 + + ip link show "$netdev" |grep -q UP + if [ $? -eq 0 ];then + echo "SKIP: $netdev: interface already up" + return $ksft_skip + fi + + ip link set "$netdev" up + if [ $? -ne 0 ];then + echo "FAIL: $netdev: Fail to up interface" + return 1 + else + echo "PASS: $netdev: set interface up" + NETDEV_STARTED=1 + fi + return 0 +} + +# this function will try to setup an IP and MAC address on a network interface +# Doing nothing if the interface was already up +# arg1: network interface name +kci_net_setup() +{ + netdev=$1 + + # do nothing if the interface was already up + if [ $NETDEV_STARTED -eq 0 ];then + return 0 + fi + + MACADDR='02:03:04:05:06:07' + ip link set dev $netdev address "$MACADDR" + if [ $? -ne 0 ];then + echo "FAIL: $netdev: Cannot set MAC address" + else + ip link show $netdev |grep -q "$MACADDR" + if [ $? -eq 0 ];then + echo "PASS: $netdev: set MAC address" + else + echo "FAIL: $netdev: Cannot set MAC address" + fi + fi + + #check that the interface did not already have an IP + ip address show "$netdev" |grep '^[[:space:]]*inet' + if [ $? -eq 0 ];then + echo "SKIP: $netdev: already have an IP" + return $ksft_skip + fi + + # TODO what ipaddr to set ? DHCP ? + echo "SKIP: $netdev: set IP address" + return $ksft_skip +} + +# test an ethtool command +# arg1: return code for not supported (see ethtool code source) +# arg2: summary of the command +# arg3: command to execute +kci_netdev_ethtool_test() +{ + if [ $# -le 2 ];then + echo "SKIP: $netdev: ethtool: invalid number of arguments" + return 1 + fi + $3 >/dev/null + ret=$? + if [ $ret -ne 0 ];then + if [ $ret -eq "$1" ];then + echo "SKIP: $netdev: ethtool $2 not supported" + return $ksft_skip + else + echo "FAIL: $netdev: ethtool $2" + return 1 + fi + else + echo "PASS: $netdev: ethtool $2" + fi + return 0 +} + +# test ethtool commands +# arg1: network interface name +kci_netdev_ethtool() +{ + netdev=$1 + + #check presence of ethtool + ethtool --version 2>/dev/null >/dev/null + if [ $? -ne 0 ];then + echo "SKIP: ethtool not present" + return $ksft_skip + fi + + TMP_ETHTOOL_FEATURES="$(mktemp)" + if [ ! -e "$TMP_ETHTOOL_FEATURES" ];then + echo "SKIP: Cannot create a tmp file" + return 1 + fi + + ethtool -k "$netdev" > "$TMP_ETHTOOL_FEATURES" + if [ $? -ne 0 ];then + echo "FAIL: $netdev: ethtool list features" + rm "$TMP_ETHTOOL_FEATURES" + return 1 + fi + echo "PASS: $netdev: ethtool list features" + #TODO for each non fixed features, try to turn them on/off + rm "$TMP_ETHTOOL_FEATURES" + + kci_netdev_ethtool_test 74 'dump' "ethtool -d $netdev" + kci_netdev_ethtool_test 94 'stats' "ethtool -S $netdev" + return 0 +} + +# stop a netdev +# arg1: network interface name +kci_netdev_stop() +{ + netdev=$1 + + if [ $NETDEV_STARTED -eq 0 ];then + echo "SKIP: $netdev: interface kept up" + return 0 + fi + + ip link set "$netdev" down + if [ $? -ne 0 ];then + echo "FAIL: $netdev: stop interface" + return 1 + fi + echo "PASS: $netdev: stop interface" + return 0 +} + +# run all test on a netdev +# arg1: network interface name +kci_test_netdev() +{ + NETDEV_STARTED=0 + IFACE_TO_UPDOWN="$1" + IFACE_TO_TEST="$1" + #check for VLAN interface + MASTER_IFACE="$(echo $1 | cut -d@ -f2)" + if [ ! -z "$MASTER_IFACE" ];then + IFACE_TO_UPDOWN="$MASTER_IFACE" + IFACE_TO_TEST="$(echo $1 | cut -d@ -f1)" + fi + + NETDEV_STARTED=0 + kci_net_start "$IFACE_TO_UPDOWN" + + kci_net_setup "$IFACE_TO_TEST" + + kci_netdev_ethtool "$IFACE_TO_TEST" + + kci_netdev_stop "$IFACE_TO_UPDOWN" + return 0 +} + +#check for needed privileges +if [ "$(id -u)" -ne 0 ];then + echo "SKIP: Need root privileges" + exit $ksft_skip +fi + +ip link show 2>/dev/null >/dev/null +if [ $? -ne 0 ];then + echo "SKIP: Could not run test without the ip tool" + exit $ksft_skip +fi + +TMP_LIST_NETDEV="$(mktemp)" +if [ ! -e "$TMP_LIST_NETDEV" ];then + echo "FAIL: Cannot create a tmp file" + exit 1 +fi + +ip link show |grep '^[0-9]' | grep -oE '[[:space:]].*eth[0-9]*:|[[:space:]].*enp[0-9]s[0-9]:' | cut -d\ -f2 | cut -d: -f1> "$TMP_LIST_NETDEV" +while read netdev +do + kci_test_netdev "$netdev" +done < "$TMP_LIST_NETDEV" + +rm "$TMP_LIST_NETDEV" +exit 0 diff --git a/tools/testing/selftests/net/pmtu.sh b/tools/testing/selftests/net/pmtu.sh new file mode 100755 index 000000000..0ab9423d0 --- /dev/null +++ b/tools/testing/selftests/net/pmtu.sh @@ -0,0 +1,477 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# +# Check that route PMTU values match expectations, and that initial device MTU +# values are assigned correctly +# +# Tests currently implemented: +# +# - pmtu_vti4_exception +# Set up vti tunnel on top of veth, with xfrm states and policies, in two +# namespaces with matching endpoints. Check that route exception is not +# created if link layer MTU is not exceeded, then exceed it and check that +# exception is created with the expected PMTU. The approach described +# below for IPv6 doesn't apply here, because, on IPv4, administrative MTU +# changes alone won't affect PMTU +# +# - pmtu_vti6_exception +# Set up vti6 tunnel on top of veth, with xfrm states and policies, in two +# namespaces with matching endpoints. Check that route exception is +# created by exceeding link layer MTU with ping to other endpoint. Then +# decrease and increase MTU of tunnel, checking that route exception PMTU +# changes accordingly +# +# - pmtu_vti4_default_mtu +# Set up vti4 tunnel on top of veth, in two namespaces with matching +# endpoints. Check that MTU assigned to vti interface is the MTU of the +# lower layer (veth) minus additional lower layer headers (zero, for veth) +# minus IPv4 header length +# +# - pmtu_vti6_default_mtu +# Same as above, for IPv6 +# +# - pmtu_vti4_link_add_mtu +# Set up vti4 interface passing MTU value at link creation, check MTU is +# configured, and that link is not created with invalid MTU values +# +# - pmtu_vti6_link_add_mtu +# Same as above, for IPv6 +# +# - pmtu_vti6_link_change_mtu +# Set up two dummy interfaces with different MTUs, create a vti6 tunnel +# and check that configured MTU is used on link creation and changes, and +# that MTU is properly calculated instead when MTU is not configured from +# userspace + +# Kselftest framework requirement - SKIP code is 4. +ksft_skip=4 + +# Some systems don't have a ping6 binary anymore +which ping6 > /dev/null 2>&1 && ping6=$(which ping6) || ping6=$(which ping) + +tests=" + pmtu_vti6_exception vti6: PMTU exceptions + pmtu_vti4_exception vti4: PMTU exceptions + pmtu_vti4_default_mtu vti4: default MTU assignment + pmtu_vti6_default_mtu vti6: default MTU assignment + pmtu_vti4_link_add_mtu vti4: MTU setting on link creation + pmtu_vti6_link_add_mtu vti6: MTU setting on link creation + pmtu_vti6_link_change_mtu vti6: MTU changes on link changes" + +NS_A="ns-$(mktemp -u XXXXXX)" +NS_B="ns-$(mktemp -u XXXXXX)" +ns_a="ip netns exec ${NS_A}" +ns_b="ip netns exec ${NS_B}" + +veth4_a_addr="192.168.1.1" +veth4_b_addr="192.168.1.2" +veth4_mask="24" +veth6_a_addr="fd00:1::a" +veth6_b_addr="fd00:1::b" +veth6_mask="64" + +vti4_a_addr="192.168.2.1" +vti4_b_addr="192.168.2.2" +vti4_mask="24" +vti6_a_addr="fd00:2::a" +vti6_b_addr="fd00:2::b" +vti6_mask="64" + +dummy6_0_addr="fc00:1000::0" +dummy6_1_addr="fc00:1001::0" +dummy6_mask="64" + +cleanup_done=1 +err_buf= + +err() { + err_buf="${err_buf}${1} +" +} + +err_flush() { + echo -n "${err_buf}" + err_buf= +} + +setup_namespaces() { + ip netns add ${NS_A} || return 1 + ip netns add ${NS_B} +} + +setup_veth() { + ${ns_a} ip link add veth_a type veth peer name veth_b || return 1 + ${ns_a} ip link set veth_b netns ${NS_B} + + ${ns_a} ip addr add ${veth4_a_addr}/${veth4_mask} dev veth_a + ${ns_b} ip addr add ${veth4_b_addr}/${veth4_mask} dev veth_b + + ${ns_a} ip addr add ${veth6_a_addr}/${veth6_mask} dev veth_a + ${ns_b} ip addr add ${veth6_b_addr}/${veth6_mask} dev veth_b + + ${ns_a} ip link set veth_a up + ${ns_b} ip link set veth_b up +} + +setup_vti() { + proto=${1} + veth_a_addr="${2}" + veth_b_addr="${3}" + vti_a_addr="${4}" + vti_b_addr="${5}" + vti_mask=${6} + + [ ${proto} -eq 6 ] && vti_type="vti6" || vti_type="vti" + + ${ns_a} ip link add vti${proto}_a type ${vti_type} local ${veth_a_addr} remote ${veth_b_addr} key 10 || return 1 + ${ns_b} ip link add vti${proto}_b type ${vti_type} local ${veth_b_addr} remote ${veth_a_addr} key 10 + + ${ns_a} ip addr add ${vti_a_addr}/${vti_mask} dev vti${proto}_a + ${ns_b} ip addr add ${vti_b_addr}/${vti_mask} dev vti${proto}_b + + ${ns_a} ip link set vti${proto}_a up + ${ns_b} ip link set vti${proto}_b up + + sleep 1 +} + +setup_vti4() { + setup_vti 4 ${veth4_a_addr} ${veth4_b_addr} ${vti4_a_addr} ${vti4_b_addr} ${vti4_mask} +} + +setup_vti6() { + setup_vti 6 ${veth6_a_addr} ${veth6_b_addr} ${vti6_a_addr} ${vti6_b_addr} ${vti6_mask} +} + +setup_xfrm() { + proto=${1} + veth_a_addr="${2}" + veth_b_addr="${3}" + + ${ns_a} ip -${proto} xfrm state add src ${veth_a_addr} dst ${veth_b_addr} spi 0x1000 proto esp aead "rfc4106(gcm(aes))" 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode tunnel || return 1 + ${ns_a} ip -${proto} xfrm state add src ${veth_b_addr} dst ${veth_a_addr} spi 0x1001 proto esp aead "rfc4106(gcm(aes))" 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode tunnel + ${ns_a} ip -${proto} xfrm policy add dir out mark 10 tmpl src ${veth_a_addr} dst ${veth_b_addr} proto esp mode tunnel + ${ns_a} ip -${proto} xfrm policy add dir in mark 10 tmpl src ${veth_b_addr} dst ${veth_a_addr} proto esp mode tunnel + + ${ns_b} ip -${proto} xfrm state add src ${veth_a_addr} dst ${veth_b_addr} spi 0x1000 proto esp aead "rfc4106(gcm(aes))" 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode tunnel + ${ns_b} ip -${proto} xfrm state add src ${veth_b_addr} dst ${veth_a_addr} spi 0x1001 proto esp aead "rfc4106(gcm(aes))" 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode tunnel + ${ns_b} ip -${proto} xfrm policy add dir out mark 10 tmpl src ${veth_b_addr} dst ${veth_a_addr} proto esp mode tunnel + ${ns_b} ip -${proto} xfrm policy add dir in mark 10 tmpl src ${veth_a_addr} dst ${veth_b_addr} proto esp mode tunnel +} + +setup_xfrm4() { + setup_xfrm 4 ${veth4_a_addr} ${veth4_b_addr} +} + +setup_xfrm6() { + setup_xfrm 6 ${veth6_a_addr} ${veth6_b_addr} +} + +setup() { + [ "$(id -u)" -ne 0 ] && echo " need to run as root" && return $ksft_skip + + cleanup_done=0 + for arg do + eval setup_${arg} || { echo " ${arg} not supported"; return 1; } + done +} + +cleanup() { + [ ${cleanup_done} -eq 1 ] && return + ip netns del ${NS_A} 2> /dev/null + ip netns del ${NS_B} 2> /dev/null + cleanup_done=1 +} + +mtu() { + ns_cmd="${1}" + dev="${2}" + mtu="${3}" + + ${ns_cmd} ip link set dev ${dev} mtu ${mtu} +} + +mtu_parse() { + input="${1}" + + next=0 + for i in ${input}; do + [ ${next} -eq 1 ] && echo "${i}" && return + [ "${i}" = "mtu" ] && next=1 + done +} + +link_get() { + ns_cmd="${1}" + name="${2}" + + ${ns_cmd} ip link show dev "${name}" +} + +link_get_mtu() { + ns_cmd="${1}" + name="${2}" + + mtu_parse "$(link_get "${ns_cmd}" ${name})" +} + +route_get_dst_exception() { + ns_cmd="${1}" + dst="${2}" + + ${ns_cmd} ip route get "${dst}" +} + +route_get_dst_pmtu_from_exception() { + ns_cmd="${1}" + dst="${2}" + + mtu_parse "$(route_get_dst_exception "${ns_cmd}" ${dst})" +} + +test_pmtu_vti4_exception() { + setup namespaces veth vti4 xfrm4 || return 2 + + veth_mtu=1500 + vti_mtu=$((veth_mtu - 20)) + + # SPI SN IV ICV pad length next header + esp_payload_rfc4106=$((vti_mtu - 4 - 4 - 8 - 16 - 1 - 1)) + ping_payload=$((esp_payload_rfc4106 - 28)) + + mtu "${ns_a}" veth_a ${veth_mtu} + mtu "${ns_b}" veth_b ${veth_mtu} + mtu "${ns_a}" vti4_a ${vti_mtu} + mtu "${ns_b}" vti4_b ${vti_mtu} + + # Send DF packet without exceeding link layer MTU, check that no + # exception is created + ${ns_a} ping -q -M want -i 0.1 -w 2 -s ${ping_payload} ${vti4_b_addr} > /dev/null + pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${vti4_b_addr})" + if [ "${pmtu}" != "" ]; then + err " unexpected exception created with PMTU ${pmtu} for IP payload length ${esp_payload_rfc4106}" + return 1 + fi + + # Now exceed link layer MTU by one byte, check that exception is created + ${ns_a} ping -q -M want -i 0.1 -w 2 -s $((ping_payload + 1)) ${vti4_b_addr} > /dev/null + pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${vti4_b_addr})" + if [ "${pmtu}" = "" ]; then + err " exception not created for IP payload length $((esp_payload_rfc4106 + 1))" + return 1 + fi + + # ...with the right PMTU value + if [ ${pmtu} -ne ${esp_payload_rfc4106} ]; then + err " wrong PMTU ${pmtu} in exception, expected: ${esp_payload_rfc4106}" + return 1 + fi +} + +test_pmtu_vti6_exception() { + setup namespaces veth vti6 xfrm6 || return 2 + fail=0 + + # Create route exception by exceeding link layer MTU + mtu "${ns_a}" veth_a 4000 + mtu "${ns_b}" veth_b 4000 + mtu "${ns_a}" vti6_a 5000 + mtu "${ns_b}" vti6_b 5000 + ${ns_a} ${ping6} -q -i 0.1 -w 2 -s 60000 ${vti6_b_addr} > /dev/null + + # Check that exception was created + if [ "$(route_get_dst_pmtu_from_exception "${ns_a}" ${vti6_b_addr})" = "" ]; then + err " tunnel exceeding link layer MTU didn't create route exception" + return 1 + fi + + # Decrease tunnel MTU, check for PMTU decrease in route exception + mtu "${ns_a}" vti6_a 3000 + + if [ "$(route_get_dst_pmtu_from_exception "${ns_a}" ${vti6_b_addr})" -ne 3000 ]; then + err " decreasing tunnel MTU didn't decrease route exception PMTU" + fail=1 + fi + + # Increase tunnel MTU, check for PMTU increase in route exception + mtu "${ns_a}" vti6_a 9000 + if [ "$(route_get_dst_pmtu_from_exception "${ns_a}" ${vti6_b_addr})" -ne 9000 ]; then + err " increasing tunnel MTU didn't increase route exception PMTU" + fail=1 + fi + + return ${fail} +} + +test_pmtu_vti4_default_mtu() { + setup namespaces veth vti4 || return 2 + + # Check that MTU of vti device is MTU of veth minus IPv4 header length + veth_mtu="$(link_get_mtu "${ns_a}" veth_a)" + vti4_mtu="$(link_get_mtu "${ns_a}" vti4_a)" + if [ $((veth_mtu - vti4_mtu)) -ne 20 ]; then + err " vti MTU ${vti4_mtu} is not veth MTU ${veth_mtu} minus IPv4 header length" + return 1 + fi +} + +test_pmtu_vti6_default_mtu() { + setup namespaces veth vti6 || return 2 + + # Check that MTU of vti device is MTU of veth minus IPv6 header length + veth_mtu="$(link_get_mtu "${ns_a}" veth_a)" + vti6_mtu="$(link_get_mtu "${ns_a}" vti6_a)" + if [ $((veth_mtu - vti6_mtu)) -ne 40 ]; then + err " vti MTU ${vti6_mtu} is not veth MTU ${veth_mtu} minus IPv6 header length" + return 1 + fi +} + +test_pmtu_vti4_link_add_mtu() { + setup namespaces || return 2 + + ${ns_a} ip link add vti4_a type vti local ${veth4_a_addr} remote ${veth4_b_addr} key 10 + [ $? -ne 0 ] && err " vti not supported" && return 2 + ${ns_a} ip link del vti4_a + + fail=0 + + min=68 + max=$((65535 - 20)) + # Check invalid values first + for v in $((min - 1)) $((max + 1)); do + ${ns_a} ip link add vti4_a mtu ${v} type vti local ${veth4_a_addr} remote ${veth4_b_addr} key 10 2>/dev/null + # This can fail, or MTU can be adjusted to a proper value + [ $? -ne 0 ] && continue + mtu="$(link_get_mtu "${ns_a}" vti4_a)" + if [ ${mtu} -lt ${min} -o ${mtu} -gt ${max} ]; then + err " vti tunnel created with invalid MTU ${mtu}" + fail=1 + fi + ${ns_a} ip link del vti4_a + done + + # Now check valid values + for v in ${min} 1300 ${max}; do + ${ns_a} ip link add vti4_a mtu ${v} type vti local ${veth4_a_addr} remote ${veth4_b_addr} key 10 + mtu="$(link_get_mtu "${ns_a}" vti4_a)" + ${ns_a} ip link del vti4_a + if [ "${mtu}" != "${v}" ]; then + err " vti MTU ${mtu} doesn't match configured value ${v}" + fail=1 + fi + done + + return ${fail} +} + +test_pmtu_vti6_link_add_mtu() { + setup namespaces || return 2 + + ${ns_a} ip link add vti6_a type vti6 local ${veth6_a_addr} remote ${veth6_b_addr} key 10 + [ $? -ne 0 ] && err " vti6 not supported" && return 2 + ${ns_a} ip link del vti6_a + + fail=0 + + min=68 # vti6 can carry IPv4 packets too + max=$((65535 - 40)) + # Check invalid values first + for v in $((min - 1)) $((max + 1)); do + ${ns_a} ip link add vti6_a mtu ${v} type vti6 local ${veth6_a_addr} remote ${veth6_b_addr} key 10 2>/dev/null + # This can fail, or MTU can be adjusted to a proper value + [ $? -ne 0 ] && continue + mtu="$(link_get_mtu "${ns_a}" vti6_a)" + if [ ${mtu} -lt ${min} -o ${mtu} -gt ${max} ]; then + err " vti6 tunnel created with invalid MTU ${v}" + fail=1 + fi + ${ns_a} ip link del vti6_a + done + + # Now check valid values + for v in 68 1280 1300 $((65535 - 40)); do + ${ns_a} ip link add vti6_a mtu ${v} type vti6 local ${veth6_a_addr} remote ${veth6_b_addr} key 10 + mtu="$(link_get_mtu "${ns_a}" vti6_a)" + ${ns_a} ip link del vti6_a + if [ "${mtu}" != "${v}" ]; then + err " vti6 MTU ${mtu} doesn't match configured value ${v}" + fail=1 + fi + done + + return ${fail} +} + +test_pmtu_vti6_link_change_mtu() { + setup namespaces || return 2 + + ${ns_a} ip link add dummy0 mtu 1500 type dummy + [ $? -ne 0 ] && err " dummy not supported" && return 2 + ${ns_a} ip link add dummy1 mtu 3000 type dummy + ${ns_a} ip link set dummy0 up + ${ns_a} ip link set dummy1 up + + ${ns_a} ip addr add ${dummy6_0_addr}/${dummy6_mask} dev dummy0 + ${ns_a} ip addr add ${dummy6_1_addr}/${dummy6_mask} dev dummy1 + + fail=0 + + # Create vti6 interface bound to device, passing MTU, check it + ${ns_a} ip link add vti6_a mtu 1300 type vti6 remote ${dummy6_0_addr} local ${dummy6_0_addr} + mtu="$(link_get_mtu "${ns_a}" vti6_a)" + if [ ${mtu} -ne 1300 ]; then + err " vti6 MTU ${mtu} doesn't match configured value 1300" + fail=1 + fi + + # Move to another device with different MTU, without passing MTU, check + # MTU is adjusted + ${ns_a} ip link set vti6_a type vti6 remote ${dummy6_1_addr} local ${dummy6_1_addr} + mtu="$(link_get_mtu "${ns_a}" vti6_a)" + if [ ${mtu} -ne $((3000 - 40)) ]; then + err " vti MTU ${mtu} is not dummy MTU 3000 minus IPv6 header length" + fail=1 + fi + + # Move it back, passing MTU, check MTU is not overridden + ${ns_a} ip link set vti6_a mtu 1280 type vti6 remote ${dummy6_0_addr} local ${dummy6_0_addr} + mtu="$(link_get_mtu "${ns_a}" vti6_a)" + if [ ${mtu} -ne 1280 ]; then + err " vti6 MTU ${mtu} doesn't match configured value 1280" + fail=1 + fi + + return ${fail} +} + +trap cleanup EXIT + +exitcode=0 +desc=0 +IFS=" +" +for t in ${tests}; do + [ $desc -eq 0 ] && name="${t}" && desc=1 && continue || desc=0 + + ( + unset IFS + eval test_${name} + ret=$? + cleanup + + if [ $ret -eq 0 ]; then + printf "TEST: %-60s [ OK ]\n" "${t}" + elif [ $ret -eq 1 ]; then + printf "TEST: %-60s [FAIL]\n" "${t}" + err_flush + exit 1 + elif [ $ret -eq 2 ]; then + printf "TEST: %-60s [SKIP]\n" "${t}" + err_flush + fi + ) + [ $? -ne 0 ] && exitcode=1 +done + +exit ${exitcode} diff --git a/tools/testing/selftests/net/psock_fanout.c b/tools/testing/selftests/net/psock_fanout.c new file mode 100644 index 000000000..f496ba3b1 --- /dev/null +++ b/tools/testing/selftests/net/psock_fanout.c @@ -0,0 +1,486 @@ +/* + * Copyright 2013 Google Inc. + * Author: Willem de Bruijn (willemb@google.com) + * + * A basic test of packet socket fanout behavior. + * + * Control: + * - create fanout fails as expected with illegal flag combinations + * - join fanout fails as expected with diverging types or flags + * + * Datapath: + * Open a pair of packet sockets and a pair of INET sockets, send a known + * number of packets across the two INET sockets and count the number of + * packets enqueued onto the two packet sockets. + * + * The test currently runs for + * - PACKET_FANOUT_HASH + * - PACKET_FANOUT_HASH with PACKET_FANOUT_FLAG_ROLLOVER + * - PACKET_FANOUT_LB + * - PACKET_FANOUT_CPU + * - PACKET_FANOUT_ROLLOVER + * - PACKET_FANOUT_CBPF + * - PACKET_FANOUT_EBPF + * + * Todo: + * - functionality: PACKET_FANOUT_FLAG_DEFRAG + * + * License (GPLv2): + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#define _GNU_SOURCE /* for sched_setaffinity */ + +#include <arpa/inet.h> +#include <errno.h> +#include <fcntl.h> +#include <linux/unistd.h> /* for __NR_bpf */ +#include <linux/filter.h> +#include <linux/bpf.h> +#include <linux/if_packet.h> +#include <net/if.h> +#include <net/ethernet.h> +#include <netinet/ip.h> +#include <netinet/udp.h> +#include <poll.h> +#include <sched.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/mman.h> +#include <sys/socket.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <unistd.h> + +#include "psock_lib.h" + +#define RING_NUM_FRAMES 20 + +/* Open a socket in a given fanout mode. + * @return -1 if mode is bad, a valid socket otherwise */ +static int sock_fanout_open(uint16_t typeflags, uint16_t group_id) +{ + struct sockaddr_ll addr = {0}; + int fd, val; + + fd = socket(PF_PACKET, SOCK_RAW, 0); + if (fd < 0) { + perror("socket packet"); + exit(1); + } + + pair_udp_setfilter(fd); + + addr.sll_family = AF_PACKET; + addr.sll_protocol = htons(ETH_P_IP); + addr.sll_ifindex = if_nametoindex("lo"); + if (addr.sll_ifindex == 0) { + perror("if_nametoindex"); + exit(1); + } + if (bind(fd, (void *) &addr, sizeof(addr))) { + perror("bind packet"); + exit(1); + } + + val = (((int) typeflags) << 16) | group_id; + if (setsockopt(fd, SOL_PACKET, PACKET_FANOUT, &val, sizeof(val))) { + if (close(fd)) { + perror("close packet"); + exit(1); + } + return -1; + } + + return fd; +} + +static void sock_fanout_set_cbpf(int fd) +{ + struct sock_filter bpf_filter[] = { + BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 80), /* ldb [80] */ + BPF_STMT(BPF_RET+BPF_A, 0), /* ret A */ + }; + struct sock_fprog bpf_prog; + + bpf_prog.filter = bpf_filter; + bpf_prog.len = sizeof(bpf_filter) / sizeof(struct sock_filter); + + if (setsockopt(fd, SOL_PACKET, PACKET_FANOUT_DATA, &bpf_prog, + sizeof(bpf_prog))) { + perror("fanout data cbpf"); + exit(1); + } +} + +static void sock_fanout_getopts(int fd, uint16_t *typeflags, uint16_t *group_id) +{ + int sockopt; + socklen_t sockopt_len = sizeof(sockopt); + + if (getsockopt(fd, SOL_PACKET, PACKET_FANOUT, + &sockopt, &sockopt_len)) { + perror("failed to getsockopt"); + exit(1); + } + *typeflags = sockopt >> 16; + *group_id = sockopt & 0xfffff; +} + +static void sock_fanout_set_ebpf(int fd) +{ + static char log_buf[65536]; + + const int len_off = __builtin_offsetof(struct __sk_buff, len); + struct bpf_insn prog[] = { + { BPF_ALU64 | BPF_MOV | BPF_X, 6, 1, 0, 0 }, + { BPF_LDX | BPF_W | BPF_MEM, 0, 6, len_off, 0 }, + { BPF_JMP | BPF_JGE | BPF_K, 0, 0, 1, DATA_LEN }, + { BPF_JMP | BPF_JA | BPF_K, 0, 0, 4, 0 }, + { BPF_LD | BPF_B | BPF_ABS, 0, 0, 0, 0x50 }, + { BPF_JMP | BPF_JEQ | BPF_K, 0, 0, 2, DATA_CHAR }, + { BPF_JMP | BPF_JEQ | BPF_K, 0, 0, 1, DATA_CHAR_1 }, + { BPF_ALU | BPF_MOV | BPF_K, 0, 0, 0, 0 }, + { BPF_JMP | BPF_EXIT, 0, 0, 0, 0 } + }; + union bpf_attr attr; + int pfd; + + memset(&attr, 0, sizeof(attr)); + attr.prog_type = BPF_PROG_TYPE_SOCKET_FILTER; + attr.insns = (unsigned long) prog; + attr.insn_cnt = sizeof(prog) / sizeof(prog[0]); + attr.license = (unsigned long) "GPL"; + attr.log_buf = (unsigned long) log_buf, + attr.log_size = sizeof(log_buf), + attr.log_level = 1, + + pfd = syscall(__NR_bpf, BPF_PROG_LOAD, &attr, sizeof(attr)); + if (pfd < 0) { + perror("bpf"); + fprintf(stderr, "bpf verifier:\n%s\n", log_buf); + exit(1); + } + + if (setsockopt(fd, SOL_PACKET, PACKET_FANOUT_DATA, &pfd, sizeof(pfd))) { + perror("fanout data ebpf"); + exit(1); + } + + if (close(pfd)) { + perror("close ebpf"); + exit(1); + } +} + +static char *sock_fanout_open_ring(int fd) +{ + struct tpacket_req req = { + .tp_block_size = getpagesize(), + .tp_frame_size = getpagesize(), + .tp_block_nr = RING_NUM_FRAMES, + .tp_frame_nr = RING_NUM_FRAMES, + }; + char *ring; + int val = TPACKET_V2; + + if (setsockopt(fd, SOL_PACKET, PACKET_VERSION, (void *) &val, + sizeof(val))) { + perror("packetsock ring setsockopt version"); + exit(1); + } + if (setsockopt(fd, SOL_PACKET, PACKET_RX_RING, (void *) &req, + sizeof(req))) { + perror("packetsock ring setsockopt"); + exit(1); + } + + ring = mmap(0, req.tp_block_size * req.tp_block_nr, + PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); + if (ring == MAP_FAILED) { + perror("packetsock ring mmap"); + exit(1); + } + + return ring; +} + +static int sock_fanout_read_ring(int fd, void *ring) +{ + struct tpacket2_hdr *header = ring; + int count = 0; + + while (count < RING_NUM_FRAMES && header->tp_status & TP_STATUS_USER) { + count++; + header = ring + (count * getpagesize()); + } + + return count; +} + +static int sock_fanout_read(int fds[], char *rings[], const int expect[]) +{ + int ret[2]; + + ret[0] = sock_fanout_read_ring(fds[0], rings[0]); + ret[1] = sock_fanout_read_ring(fds[1], rings[1]); + + fprintf(stderr, "info: count=%d,%d, expect=%d,%d\n", + ret[0], ret[1], expect[0], expect[1]); + + if ((!(ret[0] == expect[0] && ret[1] == expect[1])) && + (!(ret[0] == expect[1] && ret[1] == expect[0]))) { + fprintf(stderr, "warning: incorrect queue lengths\n"); + return 1; + } + + return 0; +} + +/* Test illegal mode + flag combination */ +static void test_control_single(void) +{ + fprintf(stderr, "test: control single socket\n"); + + if (sock_fanout_open(PACKET_FANOUT_ROLLOVER | + PACKET_FANOUT_FLAG_ROLLOVER, 0) != -1) { + fprintf(stderr, "ERROR: opened socket with dual rollover\n"); + exit(1); + } +} + +/* Test illegal group with different modes or flags */ +static void test_control_group(void) +{ + int fds[2]; + + fprintf(stderr, "test: control multiple sockets\n"); + + fds[0] = sock_fanout_open(PACKET_FANOUT_HASH, 0); + if (fds[0] == -1) { + fprintf(stderr, "ERROR: failed to open HASH socket\n"); + exit(1); + } + if (sock_fanout_open(PACKET_FANOUT_HASH | + PACKET_FANOUT_FLAG_DEFRAG, 0) != -1) { + fprintf(stderr, "ERROR: joined group with wrong flag defrag\n"); + exit(1); + } + if (sock_fanout_open(PACKET_FANOUT_HASH | + PACKET_FANOUT_FLAG_ROLLOVER, 0) != -1) { + fprintf(stderr, "ERROR: joined group with wrong flag ro\n"); + exit(1); + } + if (sock_fanout_open(PACKET_FANOUT_CPU, 0) != -1) { + fprintf(stderr, "ERROR: joined group with wrong mode\n"); + exit(1); + } + fds[1] = sock_fanout_open(PACKET_FANOUT_HASH, 0); + if (fds[1] == -1) { + fprintf(stderr, "ERROR: failed to join group\n"); + exit(1); + } + if (close(fds[1]) || close(fds[0])) { + fprintf(stderr, "ERROR: closing sockets\n"); + exit(1); + } +} + +/* Test creating a unique fanout group ids */ +static void test_unique_fanout_group_ids(void) +{ + int fds[3]; + uint16_t typeflags, first_group_id, second_group_id; + + fprintf(stderr, "test: unique ids\n"); + + fds[0] = sock_fanout_open(PACKET_FANOUT_HASH | + PACKET_FANOUT_FLAG_UNIQUEID, 0); + if (fds[0] == -1) { + fprintf(stderr, "ERROR: failed to create a unique id group.\n"); + exit(1); + } + + sock_fanout_getopts(fds[0], &typeflags, &first_group_id); + if (typeflags != PACKET_FANOUT_HASH) { + fprintf(stderr, "ERROR: unexpected typeflags %x\n", typeflags); + exit(1); + } + + if (sock_fanout_open(PACKET_FANOUT_CPU, first_group_id) != -1) { + fprintf(stderr, "ERROR: joined group with wrong type.\n"); + exit(1); + } + + fds[1] = sock_fanout_open(PACKET_FANOUT_HASH, first_group_id); + if (fds[1] == -1) { + fprintf(stderr, + "ERROR: failed to join previously created group.\n"); + exit(1); + } + + fds[2] = sock_fanout_open(PACKET_FANOUT_HASH | + PACKET_FANOUT_FLAG_UNIQUEID, 0); + if (fds[2] == -1) { + fprintf(stderr, + "ERROR: failed to create a second unique id group.\n"); + exit(1); + } + + sock_fanout_getopts(fds[2], &typeflags, &second_group_id); + if (sock_fanout_open(PACKET_FANOUT_HASH | PACKET_FANOUT_FLAG_UNIQUEID, + second_group_id) != -1) { + fprintf(stderr, + "ERROR: specified a group id when requesting unique id\n"); + exit(1); + } + + if (close(fds[0]) || close(fds[1]) || close(fds[2])) { + fprintf(stderr, "ERROR: closing sockets\n"); + exit(1); + } +} + +static int test_datapath(uint16_t typeflags, int port_off, + const int expect1[], const int expect2[]) +{ + const int expect0[] = { 0, 0 }; + char *rings[2]; + uint8_t type = typeflags & 0xFF; + int fds[2], fds_udp[2][2], ret; + + fprintf(stderr, "\ntest: datapath 0x%hx ports %hu,%hu\n", + typeflags, (uint16_t)PORT_BASE, + (uint16_t)(PORT_BASE + port_off)); + + fds[0] = sock_fanout_open(typeflags, 0); + fds[1] = sock_fanout_open(typeflags, 0); + if (fds[0] == -1 || fds[1] == -1) { + fprintf(stderr, "ERROR: failed open\n"); + exit(1); + } + if (type == PACKET_FANOUT_CBPF) + sock_fanout_set_cbpf(fds[0]); + else if (type == PACKET_FANOUT_EBPF) + sock_fanout_set_ebpf(fds[0]); + + rings[0] = sock_fanout_open_ring(fds[0]); + rings[1] = sock_fanout_open_ring(fds[1]); + pair_udp_open(fds_udp[0], PORT_BASE); + pair_udp_open(fds_udp[1], PORT_BASE + port_off); + sock_fanout_read(fds, rings, expect0); + + /* Send data, but not enough to overflow a queue */ + pair_udp_send(fds_udp[0], 15); + pair_udp_send_char(fds_udp[1], 5, DATA_CHAR_1); + ret = sock_fanout_read(fds, rings, expect1); + + /* Send more data, overflow the queue */ + pair_udp_send_char(fds_udp[0], 15, DATA_CHAR_1); + /* TODO: ensure consistent order between expect1 and expect2 */ + ret |= sock_fanout_read(fds, rings, expect2); + + if (munmap(rings[1], RING_NUM_FRAMES * getpagesize()) || + munmap(rings[0], RING_NUM_FRAMES * getpagesize())) { + fprintf(stderr, "close rings\n"); + exit(1); + } + if (close(fds_udp[1][1]) || close(fds_udp[1][0]) || + close(fds_udp[0][1]) || close(fds_udp[0][0]) || + close(fds[1]) || close(fds[0])) { + fprintf(stderr, "close datapath\n"); + exit(1); + } + + return ret; +} + +static int set_cpuaffinity(int cpuid) +{ + cpu_set_t mask; + + CPU_ZERO(&mask); + CPU_SET(cpuid, &mask); + if (sched_setaffinity(0, sizeof(mask), &mask)) { + if (errno != EINVAL) { + fprintf(stderr, "setaffinity %d\n", cpuid); + exit(1); + } + return 1; + } + + return 0; +} + +int main(int argc, char **argv) +{ + const int expect_hash[2][2] = { { 15, 5 }, { 20, 5 } }; + const int expect_hash_rb[2][2] = { { 15, 5 }, { 20, 15 } }; + const int expect_lb[2][2] = { { 10, 10 }, { 18, 17 } }; + const int expect_rb[2][2] = { { 15, 5 }, { 20, 15 } }; + const int expect_cpu0[2][2] = { { 20, 0 }, { 20, 0 } }; + const int expect_cpu1[2][2] = { { 0, 20 }, { 0, 20 } }; + const int expect_bpf[2][2] = { { 15, 5 }, { 15, 20 } }; + const int expect_uniqueid[2][2] = { { 20, 20}, { 20, 20 } }; + int port_off = 2, tries = 20, ret; + + test_control_single(); + test_control_group(); + test_unique_fanout_group_ids(); + + /* find a set of ports that do not collide onto the same socket */ + ret = test_datapath(PACKET_FANOUT_HASH, port_off, + expect_hash[0], expect_hash[1]); + while (ret) { + fprintf(stderr, "info: trying alternate ports (%d)\n", tries); + ret = test_datapath(PACKET_FANOUT_HASH, ++port_off, + expect_hash[0], expect_hash[1]); + if (!--tries) { + fprintf(stderr, "too many collisions\n"); + return 1; + } + } + + ret |= test_datapath(PACKET_FANOUT_HASH | PACKET_FANOUT_FLAG_ROLLOVER, + port_off, expect_hash_rb[0], expect_hash_rb[1]); + ret |= test_datapath(PACKET_FANOUT_LB, + port_off, expect_lb[0], expect_lb[1]); + ret |= test_datapath(PACKET_FANOUT_ROLLOVER, + port_off, expect_rb[0], expect_rb[1]); + + ret |= test_datapath(PACKET_FANOUT_CBPF, + port_off, expect_bpf[0], expect_bpf[1]); + ret |= test_datapath(PACKET_FANOUT_EBPF, + port_off, expect_bpf[0], expect_bpf[1]); + + set_cpuaffinity(0); + ret |= test_datapath(PACKET_FANOUT_CPU, port_off, + expect_cpu0[0], expect_cpu0[1]); + if (!set_cpuaffinity(1)) + /* TODO: test that choice alternates with previous */ + ret |= test_datapath(PACKET_FANOUT_CPU, port_off, + expect_cpu1[0], expect_cpu1[1]); + + ret |= test_datapath(PACKET_FANOUT_FLAG_UNIQUEID, port_off, + expect_uniqueid[0], expect_uniqueid[1]); + + if (ret) + return 1; + + printf("OK. All tests passed\n"); + return 0; +} diff --git a/tools/testing/selftests/net/psock_lib.h b/tools/testing/selftests/net/psock_lib.h new file mode 100644 index 000000000..7d990d6c8 --- /dev/null +++ b/tools/testing/selftests/net/psock_lib.h @@ -0,0 +1,158 @@ +/* + * Copyright 2013 Google Inc. + * Author: Willem de Bruijn <willemb@google.com> + * Daniel Borkmann <dborkman@redhat.com> + * + * License (GPLv2): + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef PSOCK_LIB_H +#define PSOCK_LIB_H + +#include <sys/types.h> +#include <sys/socket.h> +#include <string.h> +#include <arpa/inet.h> +#include <unistd.h> + +#define DATA_LEN 100 +#define DATA_CHAR 'a' +#define DATA_CHAR_1 'b' + +#define PORT_BASE 8000 + +#ifndef __maybe_unused +# define __maybe_unused __attribute__ ((__unused__)) +#endif + +static __maybe_unused void pair_udp_setfilter(int fd) +{ + /* the filter below checks for all of the following conditions that + * are based on the contents of create_payload() + * ether type 0x800 and + * ip proto udp and + * skb->len == DATA_LEN and + * udp[38] == 'a' or udp[38] == 'b' + * It can be generated from the following bpf_asm input: + * ldh [12] + * jne #0x800, drop ; ETH_P_IP + * ldb [23] + * jneq #17, drop ; IPPROTO_UDP + * ld len ; ld skb->len + * jlt #100, drop ; DATA_LEN + * ldb [80] + * jeq #97, pass ; DATA_CHAR + * jne #98, drop ; DATA_CHAR_1 + * pass: + * ret #-1 + * drop: + * ret #0 + */ + struct sock_filter bpf_filter[] = { + { 0x28, 0, 0, 0x0000000c }, + { 0x15, 0, 8, 0x00000800 }, + { 0x30, 0, 0, 0x00000017 }, + { 0x15, 0, 6, 0x00000011 }, + { 0x80, 0, 0, 0000000000 }, + { 0x35, 0, 4, 0x00000064 }, + { 0x30, 0, 0, 0x00000050 }, + { 0x15, 1, 0, 0x00000061 }, + { 0x15, 0, 1, 0x00000062 }, + { 0x06, 0, 0, 0xffffffff }, + { 0x06, 0, 0, 0000000000 }, + }; + struct sock_fprog bpf_prog; + + bpf_prog.filter = bpf_filter; + bpf_prog.len = sizeof(bpf_filter) / sizeof(struct sock_filter); + + if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, &bpf_prog, + sizeof(bpf_prog))) { + perror("setsockopt SO_ATTACH_FILTER"); + exit(1); + } +} + +static __maybe_unused void pair_udp_open(int fds[], uint16_t port) +{ + struct sockaddr_in saddr, daddr; + + fds[0] = socket(PF_INET, SOCK_DGRAM, 0); + fds[1] = socket(PF_INET, SOCK_DGRAM, 0); + if (fds[0] == -1 || fds[1] == -1) { + fprintf(stderr, "ERROR: socket dgram\n"); + exit(1); + } + + memset(&saddr, 0, sizeof(saddr)); + saddr.sin_family = AF_INET; + saddr.sin_port = htons(port); + saddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); + + memset(&daddr, 0, sizeof(daddr)); + daddr.sin_family = AF_INET; + daddr.sin_port = htons(port + 1); + daddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); + + /* must bind both to get consistent hash result */ + if (bind(fds[1], (void *) &daddr, sizeof(daddr))) { + perror("bind"); + exit(1); + } + if (bind(fds[0], (void *) &saddr, sizeof(saddr))) { + perror("bind"); + exit(1); + } + if (connect(fds[0], (void *) &daddr, sizeof(daddr))) { + perror("connect"); + exit(1); + } +} + +static __maybe_unused void pair_udp_send_char(int fds[], int num, char payload) +{ + char buf[DATA_LEN], rbuf[DATA_LEN]; + + memset(buf, payload, sizeof(buf)); + while (num--) { + /* Should really handle EINTR and EAGAIN */ + if (write(fds[0], buf, sizeof(buf)) != sizeof(buf)) { + fprintf(stderr, "ERROR: send failed left=%d\n", num); + exit(1); + } + if (read(fds[1], rbuf, sizeof(rbuf)) != sizeof(rbuf)) { + fprintf(stderr, "ERROR: recv failed left=%d\n", num); + exit(1); + } + if (memcmp(buf, rbuf, sizeof(buf))) { + fprintf(stderr, "ERROR: data failed left=%d\n", num); + exit(1); + } + } +} + +static __maybe_unused void pair_udp_send(int fds[], int num) +{ + return pair_udp_send_char(fds, num, DATA_CHAR); +} + +static __maybe_unused void pair_udp_close(int fds[]) +{ + close(fds[0]); + close(fds[1]); +} + +#endif /* PSOCK_LIB_H */ diff --git a/tools/testing/selftests/net/psock_snd.c b/tools/testing/selftests/net/psock_snd.c new file mode 100644 index 000000000..7d15e10a9 --- /dev/null +++ b/tools/testing/selftests/net/psock_snd.c @@ -0,0 +1,397 @@ +// SPDX-License-Identifier: GPL-2.0 + +#define _GNU_SOURCE + +#include <arpa/inet.h> +#include <errno.h> +#include <error.h> +#include <fcntl.h> +#include <limits.h> +#include <linux/filter.h> +#include <linux/bpf.h> +#include <linux/if_packet.h> +#include <linux/if_vlan.h> +#include <linux/virtio_net.h> +#include <net/if.h> +#include <net/ethernet.h> +#include <netinet/ip.h> +#include <netinet/udp.h> +#include <poll.h> +#include <sched.h> +#include <stdbool.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/mman.h> +#include <sys/socket.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <unistd.h> + +#include "psock_lib.h" + +static bool cfg_use_bind; +static bool cfg_use_csum_off; +static bool cfg_use_csum_off_bad; +static bool cfg_use_dgram; +static bool cfg_use_gso; +static bool cfg_use_qdisc_bypass; +static bool cfg_use_vlan; +static bool cfg_use_vnet; + +static char *cfg_ifname = "lo"; +static int cfg_mtu = 1500; +static int cfg_payload_len = DATA_LEN; +static int cfg_truncate_len = INT_MAX; +static uint16_t cfg_port = 8000; + +/* test sending up to max mtu + 1 */ +#define TEST_SZ (sizeof(struct virtio_net_hdr) + ETH_HLEN + ETH_MAX_MTU + 1) + +static char tbuf[TEST_SZ], rbuf[TEST_SZ]; + +static unsigned long add_csum_hword(const uint16_t *start, int num_u16) +{ + unsigned long sum = 0; + int i; + + for (i = 0; i < num_u16; i++) + sum += start[i]; + + return sum; +} + +static uint16_t build_ip_csum(const uint16_t *start, int num_u16, + unsigned long sum) +{ + sum += add_csum_hword(start, num_u16); + + while (sum >> 16) + sum = (sum & 0xffff) + (sum >> 16); + + return ~sum; +} + +static int build_vnet_header(void *header) +{ + struct virtio_net_hdr *vh = header; + + vh->hdr_len = ETH_HLEN + sizeof(struct iphdr) + sizeof(struct udphdr); + + if (cfg_use_csum_off) { + vh->flags |= VIRTIO_NET_HDR_F_NEEDS_CSUM; + vh->csum_start = ETH_HLEN + sizeof(struct iphdr); + vh->csum_offset = __builtin_offsetof(struct udphdr, check); + + /* position check field exactly one byte beyond end of packet */ + if (cfg_use_csum_off_bad) + vh->csum_start += sizeof(struct udphdr) + cfg_payload_len - + vh->csum_offset - 1; + } + + if (cfg_use_gso) { + vh->gso_type = VIRTIO_NET_HDR_GSO_UDP; + vh->gso_size = cfg_mtu - sizeof(struct iphdr); + } + + return sizeof(*vh); +} + +static int build_eth_header(void *header) +{ + struct ethhdr *eth = header; + + if (cfg_use_vlan) { + uint16_t *tag = header + ETH_HLEN; + + eth->h_proto = htons(ETH_P_8021Q); + tag[1] = htons(ETH_P_IP); + return ETH_HLEN + 4; + } + + eth->h_proto = htons(ETH_P_IP); + return ETH_HLEN; +} + +static int build_ipv4_header(void *header, int payload_len) +{ + struct iphdr *iph = header; + + iph->ihl = 5; + iph->version = 4; + iph->ttl = 8; + iph->tot_len = htons(sizeof(*iph) + sizeof(struct udphdr) + payload_len); + iph->id = htons(1337); + iph->protocol = IPPROTO_UDP; + iph->saddr = htonl((172 << 24) | (17 << 16) | 2); + iph->daddr = htonl((172 << 24) | (17 << 16) | 1); + iph->check = build_ip_csum((void *) iph, iph->ihl << 1, 0); + + return iph->ihl << 2; +} + +static int build_udp_header(void *header, int payload_len) +{ + const int alen = sizeof(uint32_t); + struct udphdr *udph = header; + int len = sizeof(*udph) + payload_len; + + udph->source = htons(9); + udph->dest = htons(cfg_port); + udph->len = htons(len); + + if (cfg_use_csum_off) + udph->check = build_ip_csum(header - (2 * alen), alen, + htons(IPPROTO_UDP) + udph->len); + else + udph->check = 0; + + return sizeof(*udph); +} + +static int build_packet(int payload_len) +{ + int off = 0; + + off += build_vnet_header(tbuf); + off += build_eth_header(tbuf + off); + off += build_ipv4_header(tbuf + off, payload_len); + off += build_udp_header(tbuf + off, payload_len); + + if (off + payload_len > sizeof(tbuf)) + error(1, 0, "payload length exceeds max"); + + memset(tbuf + off, DATA_CHAR, payload_len); + + return off + payload_len; +} + +static void do_bind(int fd) +{ + struct sockaddr_ll laddr = {0}; + + laddr.sll_family = AF_PACKET; + laddr.sll_protocol = htons(ETH_P_IP); + laddr.sll_ifindex = if_nametoindex(cfg_ifname); + if (!laddr.sll_ifindex) + error(1, errno, "if_nametoindex"); + + if (bind(fd, (void *)&laddr, sizeof(laddr))) + error(1, errno, "bind"); +} + +static void do_send(int fd, char *buf, int len) +{ + int ret; + + if (!cfg_use_vnet) { + buf += sizeof(struct virtio_net_hdr); + len -= sizeof(struct virtio_net_hdr); + } + if (cfg_use_dgram) { + buf += ETH_HLEN; + len -= ETH_HLEN; + } + + if (cfg_use_bind) { + ret = write(fd, buf, len); + } else { + struct sockaddr_ll laddr = {0}; + + laddr.sll_protocol = htons(ETH_P_IP); + laddr.sll_ifindex = if_nametoindex(cfg_ifname); + if (!laddr.sll_ifindex) + error(1, errno, "if_nametoindex"); + + ret = sendto(fd, buf, len, 0, (void *)&laddr, sizeof(laddr)); + } + + if (ret == -1) + error(1, errno, "write"); + if (ret != len) + error(1, 0, "write: %u %u", ret, len); + + fprintf(stderr, "tx: %u\n", ret); +} + +static int do_tx(void) +{ + const int one = 1; + int fd, len; + + fd = socket(PF_PACKET, cfg_use_dgram ? SOCK_DGRAM : SOCK_RAW, 0); + if (fd == -1) + error(1, errno, "socket t"); + + if (cfg_use_bind) + do_bind(fd); + + if (cfg_use_qdisc_bypass && + setsockopt(fd, SOL_PACKET, PACKET_QDISC_BYPASS, &one, sizeof(one))) + error(1, errno, "setsockopt qdisc bypass"); + + if (cfg_use_vnet && + setsockopt(fd, SOL_PACKET, PACKET_VNET_HDR, &one, sizeof(one))) + error(1, errno, "setsockopt vnet"); + + len = build_packet(cfg_payload_len); + + if (cfg_truncate_len < len) + len = cfg_truncate_len; + + do_send(fd, tbuf, len); + + if (close(fd)) + error(1, errno, "close t"); + + return len; +} + +static int setup_rx(void) +{ + struct timeval tv = { .tv_usec = 100 * 1000 }; + struct sockaddr_in raddr = {0}; + int fd; + + fd = socket(PF_INET, SOCK_DGRAM, 0); + if (fd == -1) + error(1, errno, "socket r"); + + if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv))) + error(1, errno, "setsockopt rcv timeout"); + + raddr.sin_family = AF_INET; + raddr.sin_port = htons(cfg_port); + raddr.sin_addr.s_addr = htonl(INADDR_ANY); + + if (bind(fd, (void *)&raddr, sizeof(raddr))) + error(1, errno, "bind r"); + + return fd; +} + +static void do_rx(int fd, int expected_len, char *expected) +{ + int ret; + + ret = recv(fd, rbuf, sizeof(rbuf), 0); + if (ret == -1) + error(1, errno, "recv"); + if (ret != expected_len) + error(1, 0, "recv: %u != %u", ret, expected_len); + + if (memcmp(rbuf, expected, ret)) + error(1, 0, "recv: data mismatch"); + + fprintf(stderr, "rx: %u\n", ret); +} + +static int setup_sniffer(void) +{ + struct timeval tv = { .tv_usec = 100 * 1000 }; + int fd; + + fd = socket(PF_PACKET, SOCK_RAW, 0); + if (fd == -1) + error(1, errno, "socket p"); + + if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv))) + error(1, errno, "setsockopt rcv timeout"); + + pair_udp_setfilter(fd); + do_bind(fd); + + return fd; +} + +static void parse_opts(int argc, char **argv) +{ + int c; + + while ((c = getopt(argc, argv, "bcCdgl:qt:vV")) != -1) { + switch (c) { + case 'b': + cfg_use_bind = true; + break; + case 'c': + cfg_use_csum_off = true; + break; + case 'C': + cfg_use_csum_off_bad = true; + break; + case 'd': + cfg_use_dgram = true; + break; + case 'g': + cfg_use_gso = true; + break; + case 'l': + cfg_payload_len = strtoul(optarg, NULL, 0); + break; + case 'q': + cfg_use_qdisc_bypass = true; + break; + case 't': + cfg_truncate_len = strtoul(optarg, NULL, 0); + break; + case 'v': + cfg_use_vnet = true; + break; + case 'V': + cfg_use_vlan = true; + break; + default: + error(1, 0, "%s: parse error", argv[0]); + } + } + + if (cfg_use_vlan && cfg_use_dgram) + error(1, 0, "option vlan (-V) conflicts with dgram (-d)"); + + if (cfg_use_csum_off && !cfg_use_vnet) + error(1, 0, "option csum offload (-c) requires vnet (-v)"); + + if (cfg_use_csum_off_bad && !cfg_use_csum_off) + error(1, 0, "option csum bad (-C) requires csum offload (-c)"); + + if (cfg_use_gso && !cfg_use_csum_off) + error(1, 0, "option gso (-g) requires csum offload (-c)"); +} + +static void run_test(void) +{ + int fdr, fds, total_len; + + fdr = setup_rx(); + fds = setup_sniffer(); + + total_len = do_tx(); + + /* BPF filter accepts only this length, vlan changes MAC */ + if (cfg_payload_len == DATA_LEN && !cfg_use_vlan) + do_rx(fds, total_len - sizeof(struct virtio_net_hdr), + tbuf + sizeof(struct virtio_net_hdr)); + + do_rx(fdr, cfg_payload_len, tbuf + total_len - cfg_payload_len); + + if (close(fds)) + error(1, errno, "close s"); + if (close(fdr)) + error(1, errno, "close r"); +} + +int main(int argc, char **argv) +{ + parse_opts(argc, argv); + + if (system("ip link set dev lo mtu 1500")) + error(1, errno, "ip link set mtu"); + if (system("ip addr add dev lo 172.17.0.1/24")) + error(1, errno, "ip addr add"); + + run_test(); + + fprintf(stderr, "OK\n\n"); + return 0; +} diff --git a/tools/testing/selftests/net/psock_snd.sh b/tools/testing/selftests/net/psock_snd.sh new file mode 100755 index 000000000..6331d91b8 --- /dev/null +++ b/tools/testing/selftests/net/psock_snd.sh @@ -0,0 +1,98 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# Run a series of packet socket send regression tests + +set -e + +readonly mtu=1500 +readonly iphlen=20 +readonly udphlen=8 + +readonly vnet_hlen=10 +readonly eth_hlen=14 + +readonly mss="$((${mtu} - ${iphlen} - ${udphlen}))" +readonly mss_exceeds="$((${mss} + 1))" + +readonly max_mtu=65535 +readonly max_mss="$((${max_mtu} - ${iphlen} - ${udphlen}))" +readonly max_mss_exceeds="$((${max_mss} + 1))" + +# functional checks (not a full cross-product) + +echo "dgram" +./in_netns.sh ./psock_snd -d + +echo "dgram bind" +./in_netns.sh ./psock_snd -d -b + +echo "raw" +./in_netns.sh ./psock_snd + +echo "raw bind" +./in_netns.sh ./psock_snd -b + +echo "raw qdisc bypass" +./in_netns.sh ./psock_snd -q + +echo "raw vlan" +./in_netns.sh ./psock_snd -V + +echo "raw vnet hdr" +./in_netns.sh ./psock_snd -v + +echo "raw csum_off" +./in_netns.sh ./psock_snd -v -c + +echo "raw csum_off with bad offset (fails)" +(! ./in_netns.sh ./psock_snd -v -c -C) + + +# bounds check: send {max, max + 1, min, min - 1} lengths + +echo "raw min size" +./in_netns.sh ./psock_snd -l 0 + +echo "raw mtu size" +./in_netns.sh ./psock_snd -l "${mss}" + +echo "raw mtu size + 1 (fails)" +(! ./in_netns.sh ./psock_snd -l "${mss_exceeds}") + +# fails due to ARPHRD_ETHER check in packet_extra_vlan_len_allowed +# +# echo "raw vlan mtu size" +# ./in_netns.sh ./psock_snd -V -l "${mss}" + +echo "raw vlan mtu size + 1 (fails)" +(! ./in_netns.sh ./psock_snd -V -l "${mss_exceeds}") + +echo "dgram mtu size" +./in_netns.sh ./psock_snd -d -l "${mss}" + +echo "dgram mtu size + 1 (fails)" +(! ./in_netns.sh ./psock_snd -d -l "${mss_exceeds}") + +echo "raw truncate hlen (fails: does not arrive)" +(! ./in_netns.sh ./psock_snd -t "$((${vnet_hlen} + ${eth_hlen}))") + +echo "raw truncate hlen - 1 (fails: EINVAL)" +(! ./in_netns.sh ./psock_snd -t "$((${vnet_hlen} + ${eth_hlen} - 1))") + + +# gso checks: implies -l, because with gso len must exceed gso_size + +echo "raw gso min size" +./in_netns.sh ./psock_snd -v -c -g -l "${mss_exceeds}" + +echo "raw gso min size - 1 (fails)" +(! ./in_netns.sh ./psock_snd -v -c -g -l "${mss}") + +echo "raw gso max size" +./in_netns.sh ./psock_snd -v -c -g -l "${max_mss}" + +echo "raw gso max size + 1 (fails)" +(! ./in_netns.sh ./psock_snd -v -c -g -l "${max_mss_exceeds}") + +echo "OK. All tests passed" diff --git a/tools/testing/selftests/net/psock_tpacket.c b/tools/testing/selftests/net/psock_tpacket.c new file mode 100644 index 000000000..7ec4fa4d5 --- /dev/null +++ b/tools/testing/selftests/net/psock_tpacket.c @@ -0,0 +1,864 @@ +/* + * Copyright 2013 Red Hat, Inc. + * Author: Daniel Borkmann <dborkman@redhat.com> + * Chetan Loke <loke.chetan@gmail.com> (TPACKET_V3 usage example) + * + * A basic test of packet socket's TPACKET_V1/TPACKET_V2/TPACKET_V3 behavior. + * + * Control: + * Test the setup of the TPACKET socket with different patterns that are + * known to fail (TODO) resp. succeed (OK). + * + * Datapath: + * Open a pair of packet sockets and send resp. receive an a priori known + * packet pattern accross the sockets and check if it was received resp. + * sent correctly. Fanout in combination with RX_RING is currently not + * tested here. + * + * The test currently runs for + * - TPACKET_V1: RX_RING, TX_RING + * - TPACKET_V2: RX_RING, TX_RING + * - TPACKET_V3: RX_RING + * + * License (GPLv2): + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/socket.h> +#include <sys/mman.h> +#include <linux/if_packet.h> +#include <linux/filter.h> +#include <ctype.h> +#include <fcntl.h> +#include <unistd.h> +#include <bits/wordsize.h> +#include <net/ethernet.h> +#include <netinet/ip.h> +#include <arpa/inet.h> +#include <stdint.h> +#include <string.h> +#include <assert.h> +#include <net/if.h> +#include <inttypes.h> +#include <poll.h> + +#include "psock_lib.h" + +#include "../kselftest.h" + +#ifndef bug_on +# define bug_on(cond) assert(!(cond)) +#endif + +#ifndef __aligned_tpacket +# define __aligned_tpacket __attribute__((aligned(TPACKET_ALIGNMENT))) +#endif + +#ifndef __align_tpacket +# define __align_tpacket(x) __attribute__((aligned(TPACKET_ALIGN(x)))) +#endif + +#define NUM_PACKETS 100 +#define ALIGN_8(x) (((x) + 8 - 1) & ~(8 - 1)) + +struct ring { + struct iovec *rd; + uint8_t *mm_space; + size_t mm_len, rd_len; + struct sockaddr_ll ll; + void (*walk)(int sock, struct ring *ring); + int type, rd_num, flen, version; + union { + struct tpacket_req req; + struct tpacket_req3 req3; + }; +}; + +struct block_desc { + uint32_t version; + uint32_t offset_to_priv; + struct tpacket_hdr_v1 h1; +}; + +union frame_map { + struct { + struct tpacket_hdr tp_h __aligned_tpacket; + struct sockaddr_ll s_ll __align_tpacket(sizeof(struct tpacket_hdr)); + } *v1; + struct { + struct tpacket2_hdr tp_h __aligned_tpacket; + struct sockaddr_ll s_ll __align_tpacket(sizeof(struct tpacket2_hdr)); + } *v2; + void *raw; +}; + +static unsigned int total_packets, total_bytes; + +static int pfsocket(int ver) +{ + int ret, sock = socket(PF_PACKET, SOCK_RAW, 0); + if (sock == -1) { + perror("socket"); + exit(1); + } + + ret = setsockopt(sock, SOL_PACKET, PACKET_VERSION, &ver, sizeof(ver)); + if (ret == -1) { + perror("setsockopt"); + exit(1); + } + + return sock; +} + +static void status_bar_update(void) +{ + if (total_packets % 10 == 0) { + fprintf(stderr, "."); + fflush(stderr); + } +} + +static void test_payload(void *pay, size_t len) +{ + struct ethhdr *eth = pay; + + if (len < sizeof(struct ethhdr)) { + fprintf(stderr, "test_payload: packet too " + "small: %zu bytes!\n", len); + exit(1); + } + + if (eth->h_proto != htons(ETH_P_IP)) { + fprintf(stderr, "test_payload: wrong ethernet " + "type: 0x%x!\n", ntohs(eth->h_proto)); + exit(1); + } +} + +static void create_payload(void *pay, size_t *len) +{ + int i; + struct ethhdr *eth = pay; + struct iphdr *ip = pay + sizeof(*eth); + + /* Lets create some broken crap, that still passes + * our BPF filter. + */ + + *len = DATA_LEN + 42; + + memset(pay, 0xff, ETH_ALEN * 2); + eth->h_proto = htons(ETH_P_IP); + + for (i = 0; i < sizeof(*ip); ++i) + ((uint8_t *) pay)[i + sizeof(*eth)] = (uint8_t) rand(); + + ip->ihl = 5; + ip->version = 4; + ip->protocol = 0x11; + ip->frag_off = 0; + ip->ttl = 64; + ip->tot_len = htons((uint16_t) *len - sizeof(*eth)); + + ip->saddr = htonl(INADDR_LOOPBACK); + ip->daddr = htonl(INADDR_LOOPBACK); + + memset(pay + sizeof(*eth) + sizeof(*ip), + DATA_CHAR, DATA_LEN); +} + +static inline int __v1_rx_kernel_ready(struct tpacket_hdr *hdr) +{ + return ((hdr->tp_status & TP_STATUS_USER) == TP_STATUS_USER); +} + +static inline void __v1_rx_user_ready(struct tpacket_hdr *hdr) +{ + hdr->tp_status = TP_STATUS_KERNEL; + __sync_synchronize(); +} + +static inline int __v2_rx_kernel_ready(struct tpacket2_hdr *hdr) +{ + return ((hdr->tp_status & TP_STATUS_USER) == TP_STATUS_USER); +} + +static inline void __v2_rx_user_ready(struct tpacket2_hdr *hdr) +{ + hdr->tp_status = TP_STATUS_KERNEL; + __sync_synchronize(); +} + +static inline int __v1_v2_rx_kernel_ready(void *base, int version) +{ + switch (version) { + case TPACKET_V1: + return __v1_rx_kernel_ready(base); + case TPACKET_V2: + return __v2_rx_kernel_ready(base); + default: + bug_on(1); + return 0; + } +} + +static inline void __v1_v2_rx_user_ready(void *base, int version) +{ + switch (version) { + case TPACKET_V1: + __v1_rx_user_ready(base); + break; + case TPACKET_V2: + __v2_rx_user_ready(base); + break; + } +} + +static void walk_v1_v2_rx(int sock, struct ring *ring) +{ + struct pollfd pfd; + int udp_sock[2]; + union frame_map ppd; + unsigned int frame_num = 0; + + bug_on(ring->type != PACKET_RX_RING); + + pair_udp_open(udp_sock, PORT_BASE); + + memset(&pfd, 0, sizeof(pfd)); + pfd.fd = sock; + pfd.events = POLLIN | POLLERR; + pfd.revents = 0; + + pair_udp_send(udp_sock, NUM_PACKETS); + + while (total_packets < NUM_PACKETS * 2) { + while (__v1_v2_rx_kernel_ready(ring->rd[frame_num].iov_base, + ring->version)) { + ppd.raw = ring->rd[frame_num].iov_base; + + switch (ring->version) { + case TPACKET_V1: + test_payload((uint8_t *) ppd.raw + ppd.v1->tp_h.tp_mac, + ppd.v1->tp_h.tp_snaplen); + total_bytes += ppd.v1->tp_h.tp_snaplen; + break; + + case TPACKET_V2: + test_payload((uint8_t *) ppd.raw + ppd.v2->tp_h.tp_mac, + ppd.v2->tp_h.tp_snaplen); + total_bytes += ppd.v2->tp_h.tp_snaplen; + break; + } + + status_bar_update(); + total_packets++; + + __v1_v2_rx_user_ready(ppd.raw, ring->version); + + frame_num = (frame_num + 1) % ring->rd_num; + } + + poll(&pfd, 1, 1); + } + + pair_udp_close(udp_sock); + + if (total_packets != 2 * NUM_PACKETS) { + fprintf(stderr, "walk_v%d_rx: received %u out of %u pkts\n", + ring->version, total_packets, NUM_PACKETS); + exit(1); + } + + fprintf(stderr, " %u pkts (%u bytes)", NUM_PACKETS, total_bytes >> 1); +} + +static inline int __v1_tx_kernel_ready(struct tpacket_hdr *hdr) +{ + return !(hdr->tp_status & (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING)); +} + +static inline void __v1_tx_user_ready(struct tpacket_hdr *hdr) +{ + hdr->tp_status = TP_STATUS_SEND_REQUEST; + __sync_synchronize(); +} + +static inline int __v2_tx_kernel_ready(struct tpacket2_hdr *hdr) +{ + return !(hdr->tp_status & (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING)); +} + +static inline void __v2_tx_user_ready(struct tpacket2_hdr *hdr) +{ + hdr->tp_status = TP_STATUS_SEND_REQUEST; + __sync_synchronize(); +} + +static inline int __v3_tx_kernel_ready(struct tpacket3_hdr *hdr) +{ + return !(hdr->tp_status & (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING)); +} + +static inline void __v3_tx_user_ready(struct tpacket3_hdr *hdr) +{ + hdr->tp_status = TP_STATUS_SEND_REQUEST; + __sync_synchronize(); +} + +static inline int __tx_kernel_ready(void *base, int version) +{ + switch (version) { + case TPACKET_V1: + return __v1_tx_kernel_ready(base); + case TPACKET_V2: + return __v2_tx_kernel_ready(base); + case TPACKET_V3: + return __v3_tx_kernel_ready(base); + default: + bug_on(1); + return 0; + } +} + +static inline void __tx_user_ready(void *base, int version) +{ + switch (version) { + case TPACKET_V1: + __v1_tx_user_ready(base); + break; + case TPACKET_V2: + __v2_tx_user_ready(base); + break; + case TPACKET_V3: + __v3_tx_user_ready(base); + break; + } +} + +static void __v1_v2_set_packet_loss_discard(int sock) +{ + int ret, discard = 1; + + ret = setsockopt(sock, SOL_PACKET, PACKET_LOSS, (void *) &discard, + sizeof(discard)); + if (ret == -1) { + perror("setsockopt"); + exit(1); + } +} + +static inline void *get_next_frame(struct ring *ring, int n) +{ + uint8_t *f0 = ring->rd[0].iov_base; + + switch (ring->version) { + case TPACKET_V1: + case TPACKET_V2: + return ring->rd[n].iov_base; + case TPACKET_V3: + return f0 + (n * ring->req3.tp_frame_size); + default: + bug_on(1); + } +} + +static void walk_tx(int sock, struct ring *ring) +{ + struct pollfd pfd; + int rcv_sock, ret; + size_t packet_len; + union frame_map ppd; + char packet[1024]; + unsigned int frame_num = 0, got = 0; + struct sockaddr_ll ll = { + .sll_family = PF_PACKET, + .sll_halen = ETH_ALEN, + }; + int nframes; + + /* TPACKET_V{1,2} sets up the ring->rd* related variables based + * on frames (e.g., rd_num is tp_frame_nr) whereas V3 sets these + * up based on blocks (e.g, rd_num is tp_block_nr) + */ + if (ring->version <= TPACKET_V2) + nframes = ring->rd_num; + else + nframes = ring->req3.tp_frame_nr; + + bug_on(ring->type != PACKET_TX_RING); + bug_on(nframes < NUM_PACKETS); + + rcv_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); + if (rcv_sock == -1) { + perror("socket"); + exit(1); + } + + pair_udp_setfilter(rcv_sock); + + ll.sll_ifindex = if_nametoindex("lo"); + ret = bind(rcv_sock, (struct sockaddr *) &ll, sizeof(ll)); + if (ret == -1) { + perror("bind"); + exit(1); + } + + memset(&pfd, 0, sizeof(pfd)); + pfd.fd = sock; + pfd.events = POLLOUT | POLLERR; + pfd.revents = 0; + + total_packets = NUM_PACKETS; + create_payload(packet, &packet_len); + + while (total_packets > 0) { + void *next = get_next_frame(ring, frame_num); + + while (__tx_kernel_ready(next, ring->version) && + total_packets > 0) { + ppd.raw = next; + + switch (ring->version) { + case TPACKET_V1: + ppd.v1->tp_h.tp_snaplen = packet_len; + ppd.v1->tp_h.tp_len = packet_len; + + memcpy((uint8_t *) ppd.raw + TPACKET_HDRLEN - + sizeof(struct sockaddr_ll), packet, + packet_len); + total_bytes += ppd.v1->tp_h.tp_snaplen; + break; + + case TPACKET_V2: + ppd.v2->tp_h.tp_snaplen = packet_len; + ppd.v2->tp_h.tp_len = packet_len; + + memcpy((uint8_t *) ppd.raw + TPACKET2_HDRLEN - + sizeof(struct sockaddr_ll), packet, + packet_len); + total_bytes += ppd.v2->tp_h.tp_snaplen; + break; + case TPACKET_V3: { + struct tpacket3_hdr *tx = next; + + tx->tp_snaplen = packet_len; + tx->tp_len = packet_len; + tx->tp_next_offset = 0; + + memcpy((uint8_t *)tx + TPACKET3_HDRLEN - + sizeof(struct sockaddr_ll), packet, + packet_len); + total_bytes += tx->tp_snaplen; + break; + } + } + + status_bar_update(); + total_packets--; + + __tx_user_ready(next, ring->version); + + frame_num = (frame_num + 1) % nframes; + } + + poll(&pfd, 1, 1); + } + + bug_on(total_packets != 0); + + ret = sendto(sock, NULL, 0, 0, NULL, 0); + if (ret == -1) { + perror("sendto"); + exit(1); + } + + while ((ret = recvfrom(rcv_sock, packet, sizeof(packet), + 0, NULL, NULL)) > 0 && + total_packets < NUM_PACKETS) { + got += ret; + test_payload(packet, ret); + + status_bar_update(); + total_packets++; + } + + close(rcv_sock); + + if (total_packets != NUM_PACKETS) { + fprintf(stderr, "walk_v%d_rx: received %u out of %u pkts\n", + ring->version, total_packets, NUM_PACKETS); + exit(1); + } + + fprintf(stderr, " %u pkts (%u bytes)", NUM_PACKETS, got); +} + +static void walk_v1_v2(int sock, struct ring *ring) +{ + if (ring->type == PACKET_RX_RING) + walk_v1_v2_rx(sock, ring); + else + walk_tx(sock, ring); +} + +static uint64_t __v3_prev_block_seq_num = 0; + +void __v3_test_block_seq_num(struct block_desc *pbd) +{ + if (__v3_prev_block_seq_num + 1 != pbd->h1.seq_num) { + fprintf(stderr, "\nprev_block_seq_num:%"PRIu64", expected " + "seq:%"PRIu64" != actual seq:%"PRIu64"\n", + __v3_prev_block_seq_num, __v3_prev_block_seq_num + 1, + (uint64_t) pbd->h1.seq_num); + exit(1); + } + + __v3_prev_block_seq_num = pbd->h1.seq_num; +} + +static void __v3_test_block_len(struct block_desc *pbd, uint32_t bytes, int block_num) +{ + if (pbd->h1.num_pkts && bytes != pbd->h1.blk_len) { + fprintf(stderr, "\nblock:%u with %upackets, expected " + "len:%u != actual len:%u\n", block_num, + pbd->h1.num_pkts, bytes, pbd->h1.blk_len); + exit(1); + } +} + +static void __v3_test_block_header(struct block_desc *pbd, const int block_num) +{ + if ((pbd->h1.block_status & TP_STATUS_USER) == 0) { + fprintf(stderr, "\nblock %u: not in TP_STATUS_USER\n", block_num); + exit(1); + } + + __v3_test_block_seq_num(pbd); +} + +static void __v3_walk_block(struct block_desc *pbd, const int block_num) +{ + int num_pkts = pbd->h1.num_pkts, i; + unsigned long bytes = 0, bytes_with_padding = ALIGN_8(sizeof(*pbd)); + struct tpacket3_hdr *ppd; + + __v3_test_block_header(pbd, block_num); + + ppd = (struct tpacket3_hdr *) ((uint8_t *) pbd + + pbd->h1.offset_to_first_pkt); + + for (i = 0; i < num_pkts; ++i) { + bytes += ppd->tp_snaplen; + + if (ppd->tp_next_offset) + bytes_with_padding += ppd->tp_next_offset; + else + bytes_with_padding += ALIGN_8(ppd->tp_snaplen + ppd->tp_mac); + + test_payload((uint8_t *) ppd + ppd->tp_mac, ppd->tp_snaplen); + + status_bar_update(); + total_packets++; + + ppd = (struct tpacket3_hdr *) ((uint8_t *) ppd + ppd->tp_next_offset); + __sync_synchronize(); + } + + __v3_test_block_len(pbd, bytes_with_padding, block_num); + total_bytes += bytes; +} + +void __v3_flush_block(struct block_desc *pbd) +{ + pbd->h1.block_status = TP_STATUS_KERNEL; + __sync_synchronize(); +} + +static void walk_v3_rx(int sock, struct ring *ring) +{ + unsigned int block_num = 0; + struct pollfd pfd; + struct block_desc *pbd; + int udp_sock[2]; + + bug_on(ring->type != PACKET_RX_RING); + + pair_udp_open(udp_sock, PORT_BASE); + + memset(&pfd, 0, sizeof(pfd)); + pfd.fd = sock; + pfd.events = POLLIN | POLLERR; + pfd.revents = 0; + + pair_udp_send(udp_sock, NUM_PACKETS); + + while (total_packets < NUM_PACKETS * 2) { + pbd = (struct block_desc *) ring->rd[block_num].iov_base; + + while ((pbd->h1.block_status & TP_STATUS_USER) == 0) + poll(&pfd, 1, 1); + + __v3_walk_block(pbd, block_num); + __v3_flush_block(pbd); + + block_num = (block_num + 1) % ring->rd_num; + } + + pair_udp_close(udp_sock); + + if (total_packets != 2 * NUM_PACKETS) { + fprintf(stderr, "walk_v3_rx: received %u out of %u pkts\n", + total_packets, NUM_PACKETS); + exit(1); + } + + fprintf(stderr, " %u pkts (%u bytes)", NUM_PACKETS, total_bytes >> 1); +} + +static void walk_v3(int sock, struct ring *ring) +{ + if (ring->type == PACKET_RX_RING) + walk_v3_rx(sock, ring); + else + walk_tx(sock, ring); +} + +static void __v1_v2_fill(struct ring *ring, unsigned int blocks) +{ + ring->req.tp_block_size = getpagesize() << 2; + ring->req.tp_frame_size = TPACKET_ALIGNMENT << 7; + ring->req.tp_block_nr = blocks; + + ring->req.tp_frame_nr = ring->req.tp_block_size / + ring->req.tp_frame_size * + ring->req.tp_block_nr; + + ring->mm_len = ring->req.tp_block_size * ring->req.tp_block_nr; + ring->walk = walk_v1_v2; + ring->rd_num = ring->req.tp_frame_nr; + ring->flen = ring->req.tp_frame_size; +} + +static void __v3_fill(struct ring *ring, unsigned int blocks, int type) +{ + if (type == PACKET_RX_RING) { + ring->req3.tp_retire_blk_tov = 64; + ring->req3.tp_sizeof_priv = 0; + ring->req3.tp_feature_req_word = TP_FT_REQ_FILL_RXHASH; + } + ring->req3.tp_block_size = getpagesize() << 2; + ring->req3.tp_frame_size = TPACKET_ALIGNMENT << 7; + ring->req3.tp_block_nr = blocks; + + ring->req3.tp_frame_nr = ring->req3.tp_block_size / + ring->req3.tp_frame_size * + ring->req3.tp_block_nr; + + ring->mm_len = ring->req3.tp_block_size * ring->req3.tp_block_nr; + ring->walk = walk_v3; + ring->rd_num = ring->req3.tp_block_nr; + ring->flen = ring->req3.tp_block_size; +} + +static void setup_ring(int sock, struct ring *ring, int version, int type) +{ + int ret = 0; + unsigned int blocks = 256; + + ring->type = type; + ring->version = version; + + switch (version) { + case TPACKET_V1: + case TPACKET_V2: + if (type == PACKET_TX_RING) + __v1_v2_set_packet_loss_discard(sock); + __v1_v2_fill(ring, blocks); + ret = setsockopt(sock, SOL_PACKET, type, &ring->req, + sizeof(ring->req)); + break; + + case TPACKET_V3: + __v3_fill(ring, blocks, type); + ret = setsockopt(sock, SOL_PACKET, type, &ring->req3, + sizeof(ring->req3)); + break; + } + + if (ret == -1) { + perror("setsockopt"); + exit(1); + } + + ring->rd_len = ring->rd_num * sizeof(*ring->rd); + ring->rd = malloc(ring->rd_len); + if (ring->rd == NULL) { + perror("malloc"); + exit(1); + } + + total_packets = 0; + total_bytes = 0; +} + +static void mmap_ring(int sock, struct ring *ring) +{ + int i; + + ring->mm_space = mmap(0, ring->mm_len, PROT_READ | PROT_WRITE, + MAP_SHARED | MAP_LOCKED | MAP_POPULATE, sock, 0); + if (ring->mm_space == MAP_FAILED) { + perror("mmap"); + exit(1); + } + + memset(ring->rd, 0, ring->rd_len); + for (i = 0; i < ring->rd_num; ++i) { + ring->rd[i].iov_base = ring->mm_space + (i * ring->flen); + ring->rd[i].iov_len = ring->flen; + } +} + +static void bind_ring(int sock, struct ring *ring) +{ + int ret; + + pair_udp_setfilter(sock); + + ring->ll.sll_family = PF_PACKET; + ring->ll.sll_protocol = htons(ETH_P_ALL); + ring->ll.sll_ifindex = if_nametoindex("lo"); + ring->ll.sll_hatype = 0; + ring->ll.sll_pkttype = 0; + ring->ll.sll_halen = 0; + + ret = bind(sock, (struct sockaddr *) &ring->ll, sizeof(ring->ll)); + if (ret == -1) { + perror("bind"); + exit(1); + } +} + +static void walk_ring(int sock, struct ring *ring) +{ + ring->walk(sock, ring); +} + +static void unmap_ring(int sock, struct ring *ring) +{ + munmap(ring->mm_space, ring->mm_len); + free(ring->rd); +} + +static int test_kernel_bit_width(void) +{ + char in[512], *ptr; + int num = 0, fd; + ssize_t ret; + + fd = open("/proc/kallsyms", O_RDONLY); + if (fd == -1) { + perror("open"); + exit(1); + } + + ret = read(fd, in, sizeof(in)); + if (ret <= 0) { + perror("read"); + exit(1); + } + + close(fd); + + ptr = in; + while(!isspace(*ptr)) { + num++; + ptr++; + } + + return num * 4; +} + +static int test_user_bit_width(void) +{ + return __WORDSIZE; +} + +static const char *tpacket_str[] = { + [TPACKET_V1] = "TPACKET_V1", + [TPACKET_V2] = "TPACKET_V2", + [TPACKET_V3] = "TPACKET_V3", +}; + +static const char *type_str[] = { + [PACKET_RX_RING] = "PACKET_RX_RING", + [PACKET_TX_RING] = "PACKET_TX_RING", +}; + +static int test_tpacket(int version, int type) +{ + int sock; + struct ring ring; + + fprintf(stderr, "test: %s with %s ", tpacket_str[version], + type_str[type]); + fflush(stderr); + + if (version == TPACKET_V1 && + test_kernel_bit_width() != test_user_bit_width()) { + fprintf(stderr, "test: skip %s %s since user and kernel " + "space have different bit width\n", + tpacket_str[version], type_str[type]); + return KSFT_SKIP; + } + + sock = pfsocket(version); + memset(&ring, 0, sizeof(ring)); + setup_ring(sock, &ring, version, type); + mmap_ring(sock, &ring); + bind_ring(sock, &ring); + walk_ring(sock, &ring); + unmap_ring(sock, &ring); + close(sock); + + fprintf(stderr, "\n"); + return 0; +} + +int main(void) +{ + int ret = 0; + + ret |= test_tpacket(TPACKET_V1, PACKET_RX_RING); + ret |= test_tpacket(TPACKET_V1, PACKET_TX_RING); + + ret |= test_tpacket(TPACKET_V2, PACKET_RX_RING); + ret |= test_tpacket(TPACKET_V2, PACKET_TX_RING); + + ret |= test_tpacket(TPACKET_V3, PACKET_RX_RING); + ret |= test_tpacket(TPACKET_V3, PACKET_TX_RING); + + if (ret) + return 1; + + printf("OK. All tests passed\n"); + return 0; +} diff --git a/tools/testing/selftests/net/reuseaddr_conflict.c b/tools/testing/selftests/net/reuseaddr_conflict.c new file mode 100644 index 000000000..7c5b12664 --- /dev/null +++ b/tools/testing/selftests/net/reuseaddr_conflict.c @@ -0,0 +1,114 @@ +/* + * Test for the regression introduced by + * + * b9470c27607b ("inet: kill smallest_size and smallest_port") + * + * If we open an ipv4 socket on a port with reuseaddr we shouldn't reset the tb + * when we open the ipv6 conterpart, which is what was happening previously. + */ +#include <errno.h> +#include <error.h> +#include <arpa/inet.h> +#include <netinet/in.h> +#include <stdbool.h> +#include <stdio.h> +#include <sys/socket.h> +#include <sys/types.h> +#include <unistd.h> + +#define PORT 9999 + +int open_port(int ipv6, int any) +{ + int fd = -1; + int reuseaddr = 1; + int v6only = 1; + int addrlen; + int ret = -1; + struct sockaddr *addr; + int family = ipv6 ? AF_INET6 : AF_INET; + + struct sockaddr_in6 addr6 = { + .sin6_family = AF_INET6, + .sin6_port = htons(PORT), + .sin6_addr = in6addr_any + }; + struct sockaddr_in addr4 = { + .sin_family = AF_INET, + .sin_port = htons(PORT), + .sin_addr.s_addr = any ? htonl(INADDR_ANY) : inet_addr("127.0.0.1"), + }; + + + if (ipv6) { + addr = (struct sockaddr*)&addr6; + addrlen = sizeof(addr6); + } else { + addr = (struct sockaddr*)&addr4; + addrlen = sizeof(addr4); + } + + if ((fd = socket(family, SOCK_STREAM, IPPROTO_TCP)) < 0) { + perror("socket"); + goto out; + } + + if (ipv6 && setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, (void*)&v6only, + sizeof(v6only)) < 0) { + perror("setsockopt IPV6_V6ONLY"); + goto out; + } + + if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &reuseaddr, + sizeof(reuseaddr)) < 0) { + perror("setsockopt SO_REUSEADDR"); + goto out; + } + + if (bind(fd, addr, addrlen) < 0) { + perror("bind"); + goto out; + } + + if (any) + return fd; + + if (listen(fd, 1) < 0) { + perror("listen"); + goto out; + } + return fd; +out: + close(fd); + return ret; +} + +int main(void) +{ + int listenfd; + int fd1, fd2; + + fprintf(stderr, "Opening 127.0.0.1:%d\n", PORT); + listenfd = open_port(0, 0); + if (listenfd < 0) + error(1, errno, "Couldn't open listen socket"); + fprintf(stderr, "Opening INADDR_ANY:%d\n", PORT); + fd1 = open_port(0, 1); + if (fd1 >= 0) + error(1, 0, "Was allowed to create an ipv4 reuseport on a already bound non-reuseport socket"); + fprintf(stderr, "Opening in6addr_any:%d\n", PORT); + fd1 = open_port(1, 1); + if (fd1 < 0) + error(1, errno, "Couldn't open ipv6 reuseport"); + fprintf(stderr, "Opening INADDR_ANY:%d\n", PORT); + fd2 = open_port(0, 1); + if (fd2 >= 0) + error(1, 0, "Was allowed to create an ipv4 reuseport on a already bound non-reuseport socket"); + close(fd1); + fprintf(stderr, "Opening INADDR_ANY:%d after closing ipv6 socket\n", PORT); + fd1 = open_port(0, 1); + if (fd1 >= 0) + error(1, 0, "Was allowed to create an ipv4 reuseport on an already bound non-reuseport socket with no ipv6"); + fprintf(stderr, "Success"); + return 0; +} diff --git a/tools/testing/selftests/net/reuseport_bpf.c b/tools/testing/selftests/net/reuseport_bpf.c new file mode 100644 index 000000000..b5277106d --- /dev/null +++ b/tools/testing/selftests/net/reuseport_bpf.c @@ -0,0 +1,641 @@ +/* + * Test functionality of BPF filters for SO_REUSEPORT. The tests below will use + * a BPF program (both classic and extended) to read the first word from an + * incoming packet (expected to be in network byte-order), calculate a modulus + * of that number, and then dispatch the packet to the Nth socket using the + * result. These tests are run for each supported address family and protocol. + * Additionally, a few edge cases in the implementation are tested. + */ + +#include <errno.h> +#include <error.h> +#include <fcntl.h> +#include <linux/bpf.h> +#include <linux/filter.h> +#include <linux/unistd.h> +#include <netinet/in.h> +#include <netinet/tcp.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/epoll.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/resource.h> +#include <unistd.h> + +#ifndef ARRAY_SIZE +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) +#endif + +struct test_params { + int recv_family; + int send_family; + int protocol; + size_t recv_socks; + uint16_t recv_port; + uint16_t send_port_min; +}; + +static size_t sockaddr_size(void) +{ + return sizeof(struct sockaddr_storage); +} + +static struct sockaddr *new_any_sockaddr(int family, uint16_t port) +{ + struct sockaddr_storage *addr; + struct sockaddr_in *addr4; + struct sockaddr_in6 *addr6; + + addr = malloc(sizeof(struct sockaddr_storage)); + memset(addr, 0, sizeof(struct sockaddr_storage)); + + switch (family) { + case AF_INET: + addr4 = (struct sockaddr_in *)addr; + addr4->sin_family = AF_INET; + addr4->sin_addr.s_addr = htonl(INADDR_ANY); + addr4->sin_port = htons(port); + break; + case AF_INET6: + addr6 = (struct sockaddr_in6 *)addr; + addr6->sin6_family = AF_INET6; + addr6->sin6_addr = in6addr_any; + addr6->sin6_port = htons(port); + break; + default: + error(1, 0, "Unsupported family %d", family); + } + return (struct sockaddr *)addr; +} + +static struct sockaddr *new_loopback_sockaddr(int family, uint16_t port) +{ + struct sockaddr *addr = new_any_sockaddr(family, port); + struct sockaddr_in *addr4; + struct sockaddr_in6 *addr6; + + switch (family) { + case AF_INET: + addr4 = (struct sockaddr_in *)addr; + addr4->sin_addr.s_addr = htonl(INADDR_LOOPBACK); + break; + case AF_INET6: + addr6 = (struct sockaddr_in6 *)addr; + addr6->sin6_addr = in6addr_loopback; + break; + default: + error(1, 0, "Unsupported family %d", family); + } + return addr; +} + +static void attach_ebpf(int fd, uint16_t mod) +{ + static char bpf_log_buf[65536]; + static const char bpf_license[] = "GPL"; + + int bpf_fd; + const struct bpf_insn prog[] = { + /* BPF_MOV64_REG(BPF_REG_6, BPF_REG_1) */ + { BPF_ALU64 | BPF_MOV | BPF_X, BPF_REG_6, BPF_REG_1, 0, 0 }, + /* BPF_LD_ABS(BPF_W, 0) R0 = (uint32_t)skb[0] */ + { BPF_LD | BPF_ABS | BPF_W, 0, 0, 0, 0 }, + /* BPF_ALU64_IMM(BPF_MOD, BPF_REG_0, mod) */ + { BPF_ALU64 | BPF_MOD | BPF_K, BPF_REG_0, 0, 0, mod }, + /* BPF_EXIT_INSN() */ + { BPF_JMP | BPF_EXIT, 0, 0, 0, 0 } + }; + union bpf_attr attr; + + memset(&attr, 0, sizeof(attr)); + attr.prog_type = BPF_PROG_TYPE_SOCKET_FILTER; + attr.insn_cnt = ARRAY_SIZE(prog); + attr.insns = (unsigned long) &prog; + attr.license = (unsigned long) &bpf_license; + attr.log_buf = (unsigned long) &bpf_log_buf; + attr.log_size = sizeof(bpf_log_buf); + attr.log_level = 1; + attr.kern_version = 0; + + bpf_fd = syscall(__NR_bpf, BPF_PROG_LOAD, &attr, sizeof(attr)); + if (bpf_fd < 0) + error(1, errno, "ebpf error. log:\n%s\n", bpf_log_buf); + + if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_REUSEPORT_EBPF, &bpf_fd, + sizeof(bpf_fd))) + error(1, errno, "failed to set SO_ATTACH_REUSEPORT_EBPF"); + + close(bpf_fd); +} + +static void attach_cbpf(int fd, uint16_t mod) +{ + struct sock_filter code[] = { + /* A = (uint32_t)skb[0] */ + { BPF_LD | BPF_W | BPF_ABS, 0, 0, 0 }, + /* A = A % mod */ + { BPF_ALU | BPF_MOD, 0, 0, mod }, + /* return A */ + { BPF_RET | BPF_A, 0, 0, 0 }, + }; + struct sock_fprog p = { + .len = ARRAY_SIZE(code), + .filter = code, + }; + + if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_REUSEPORT_CBPF, &p, sizeof(p))) + error(1, errno, "failed to set SO_ATTACH_REUSEPORT_CBPF"); +} + +static void build_recv_group(const struct test_params p, int fd[], uint16_t mod, + void (*attach_bpf)(int, uint16_t)) +{ + struct sockaddr * const addr = + new_any_sockaddr(p.recv_family, p.recv_port); + int i, opt; + + for (i = 0; i < p.recv_socks; ++i) { + fd[i] = socket(p.recv_family, p.protocol, 0); + if (fd[i] < 0) + error(1, errno, "failed to create recv %d", i); + + opt = 1; + if (setsockopt(fd[i], SOL_SOCKET, SO_REUSEPORT, &opt, + sizeof(opt))) + error(1, errno, "failed to set SO_REUSEPORT on %d", i); + + if (i == 0) + attach_bpf(fd[i], mod); + + if (bind(fd[i], addr, sockaddr_size())) + error(1, errno, "failed to bind recv socket %d", i); + + if (p.protocol == SOCK_STREAM) { + opt = 4; + if (setsockopt(fd[i], SOL_TCP, TCP_FASTOPEN, &opt, + sizeof(opt))) + error(1, errno, + "failed to set TCP_FASTOPEN on %d", i); + if (listen(fd[i], p.recv_socks * 10)) + error(1, errno, "failed to listen on socket"); + } + } + free(addr); +} + +static void send_from(struct test_params p, uint16_t sport, char *buf, + size_t len) +{ + struct sockaddr * const saddr = new_any_sockaddr(p.send_family, sport); + struct sockaddr * const daddr = + new_loopback_sockaddr(p.send_family, p.recv_port); + const int fd = socket(p.send_family, p.protocol, 0), one = 1; + + if (fd < 0) + error(1, errno, "failed to create send socket"); + + if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one))) + error(1, errno, "failed to set reuseaddr"); + + if (bind(fd, saddr, sockaddr_size())) + error(1, errno, "failed to bind send socket"); + + if (sendto(fd, buf, len, MSG_FASTOPEN, daddr, sockaddr_size()) < 0) + error(1, errno, "failed to send message"); + + close(fd); + free(saddr); + free(daddr); +} + +static void test_recv_order(const struct test_params p, int fd[], int mod) +{ + char recv_buf[8], send_buf[8]; + struct msghdr msg; + struct iovec recv_io = { recv_buf, 8 }; + struct epoll_event ev; + int epfd, conn, i, sport, expected; + uint32_t data, ndata; + + epfd = epoll_create(1); + if (epfd < 0) + error(1, errno, "failed to create epoll"); + for (i = 0; i < p.recv_socks; ++i) { + ev.events = EPOLLIN; + ev.data.fd = fd[i]; + if (epoll_ctl(epfd, EPOLL_CTL_ADD, fd[i], &ev)) + error(1, errno, "failed to register sock %d epoll", i); + } + + memset(&msg, 0, sizeof(msg)); + msg.msg_iov = &recv_io; + msg.msg_iovlen = 1; + + for (data = 0; data < p.recv_socks * 2; ++data) { + sport = p.send_port_min + data; + ndata = htonl(data); + memcpy(send_buf, &ndata, sizeof(ndata)); + send_from(p, sport, send_buf, sizeof(ndata)); + + i = epoll_wait(epfd, &ev, 1, -1); + if (i < 0) + error(1, errno, "epoll wait failed"); + + if (p.protocol == SOCK_STREAM) { + conn = accept(ev.data.fd, NULL, NULL); + if (conn < 0) + error(1, errno, "error accepting"); + i = recvmsg(conn, &msg, 0); + close(conn); + } else { + i = recvmsg(ev.data.fd, &msg, 0); + } + if (i < 0) + error(1, errno, "recvmsg error"); + if (i != sizeof(ndata)) + error(1, 0, "expected size %zd got %d", + sizeof(ndata), i); + + for (i = 0; i < p.recv_socks; ++i) + if (ev.data.fd == fd[i]) + break; + memcpy(&ndata, recv_buf, sizeof(ndata)); + fprintf(stderr, "Socket %d: %d\n", i, ntohl(ndata)); + + expected = (sport % mod); + if (i != expected) + error(1, 0, "expected socket %d", expected); + } +} + +static void test_reuseport_ebpf(struct test_params p) +{ + int i, fd[p.recv_socks]; + + fprintf(stderr, "Testing EBPF mod %zd...\n", p.recv_socks); + build_recv_group(p, fd, p.recv_socks, attach_ebpf); + test_recv_order(p, fd, p.recv_socks); + + p.send_port_min += p.recv_socks * 2; + fprintf(stderr, "Reprograming, testing mod %zd...\n", p.recv_socks / 2); + attach_ebpf(fd[0], p.recv_socks / 2); + test_recv_order(p, fd, p.recv_socks / 2); + + for (i = 0; i < p.recv_socks; ++i) + close(fd[i]); +} + +static void test_reuseport_cbpf(struct test_params p) +{ + int i, fd[p.recv_socks]; + + fprintf(stderr, "Testing CBPF mod %zd...\n", p.recv_socks); + build_recv_group(p, fd, p.recv_socks, attach_cbpf); + test_recv_order(p, fd, p.recv_socks); + + p.send_port_min += p.recv_socks * 2; + fprintf(stderr, "Reprograming, testing mod %zd...\n", p.recv_socks / 2); + attach_cbpf(fd[0], p.recv_socks / 2); + test_recv_order(p, fd, p.recv_socks / 2); + + for (i = 0; i < p.recv_socks; ++i) + close(fd[i]); +} + +static void test_extra_filter(const struct test_params p) +{ + struct sockaddr * const addr = + new_any_sockaddr(p.recv_family, p.recv_port); + int fd1, fd2, opt; + + fprintf(stderr, "Testing too many filters...\n"); + fd1 = socket(p.recv_family, p.protocol, 0); + if (fd1 < 0) + error(1, errno, "failed to create socket 1"); + fd2 = socket(p.recv_family, p.protocol, 0); + if (fd2 < 0) + error(1, errno, "failed to create socket 2"); + + opt = 1; + if (setsockopt(fd1, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt))) + error(1, errno, "failed to set SO_REUSEPORT on socket 1"); + if (setsockopt(fd2, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt))) + error(1, errno, "failed to set SO_REUSEPORT on socket 2"); + + attach_ebpf(fd1, 10); + attach_ebpf(fd2, 10); + + if (bind(fd1, addr, sockaddr_size())) + error(1, errno, "failed to bind recv socket 1"); + + if (!bind(fd2, addr, sockaddr_size()) && errno != EADDRINUSE) + error(1, errno, "bind socket 2 should fail with EADDRINUSE"); + + free(addr); +} + +static void test_filter_no_reuseport(const struct test_params p) +{ + struct sockaddr * const addr = + new_any_sockaddr(p.recv_family, p.recv_port); + const char bpf_license[] = "GPL"; + struct bpf_insn ecode[] = { + { BPF_ALU64 | BPF_MOV | BPF_K, BPF_REG_0, 0, 0, 10 }, + { BPF_JMP | BPF_EXIT, 0, 0, 0, 0 } + }; + struct sock_filter ccode[] = {{ BPF_RET | BPF_A, 0, 0, 0 }}; + union bpf_attr eprog; + struct sock_fprog cprog; + int fd, bpf_fd; + + fprintf(stderr, "Testing filters on non-SO_REUSEPORT socket...\n"); + + memset(&eprog, 0, sizeof(eprog)); + eprog.prog_type = BPF_PROG_TYPE_SOCKET_FILTER; + eprog.insn_cnt = ARRAY_SIZE(ecode); + eprog.insns = (unsigned long) &ecode; + eprog.license = (unsigned long) &bpf_license; + eprog.kern_version = 0; + + memset(&cprog, 0, sizeof(cprog)); + cprog.len = ARRAY_SIZE(ccode); + cprog.filter = ccode; + + + bpf_fd = syscall(__NR_bpf, BPF_PROG_LOAD, &eprog, sizeof(eprog)); + if (bpf_fd < 0) + error(1, errno, "ebpf error"); + fd = socket(p.recv_family, p.protocol, 0); + if (fd < 0) + error(1, errno, "failed to create socket 1"); + + if (bind(fd, addr, sockaddr_size())) + error(1, errno, "failed to bind recv socket 1"); + + errno = 0; + if (!setsockopt(fd, SOL_SOCKET, SO_ATTACH_REUSEPORT_EBPF, &bpf_fd, + sizeof(bpf_fd)) || errno != EINVAL) + error(1, errno, "setsockopt should have returned EINVAL"); + + errno = 0; + if (!setsockopt(fd, SOL_SOCKET, SO_ATTACH_REUSEPORT_CBPF, &cprog, + sizeof(cprog)) || errno != EINVAL) + error(1, errno, "setsockopt should have returned EINVAL"); + + free(addr); +} + +static void test_filter_without_bind(void) +{ + int fd1, fd2, opt = 1; + + fprintf(stderr, "Testing filter add without bind...\n"); + fd1 = socket(AF_INET, SOCK_DGRAM, 0); + if (fd1 < 0) + error(1, errno, "failed to create socket 1"); + fd2 = socket(AF_INET, SOCK_DGRAM, 0); + if (fd2 < 0) + error(1, errno, "failed to create socket 2"); + if (setsockopt(fd1, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt))) + error(1, errno, "failed to set SO_REUSEPORT on socket 1"); + if (setsockopt(fd2, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt))) + error(1, errno, "failed to set SO_REUSEPORT on socket 2"); + + attach_ebpf(fd1, 10); + attach_cbpf(fd2, 10); + + close(fd1); + close(fd2); +} + +void enable_fastopen(void) +{ + int fd = open("/proc/sys/net/ipv4/tcp_fastopen", 0); + int rw_mask = 3; /* bit 1: client side; bit-2 server side */ + int val, size; + char buf[16]; + + if (fd < 0) + error(1, errno, "Unable to open tcp_fastopen sysctl"); + if (read(fd, buf, sizeof(buf)) <= 0) + error(1, errno, "Unable to read tcp_fastopen sysctl"); + val = atoi(buf); + close(fd); + + if ((val & rw_mask) != rw_mask) { + fd = open("/proc/sys/net/ipv4/tcp_fastopen", O_RDWR); + if (fd < 0) + error(1, errno, + "Unable to open tcp_fastopen sysctl for writing"); + val |= rw_mask; + size = snprintf(buf, 16, "%d", val); + if (write(fd, buf, size) <= 0) + error(1, errno, "Unable to write tcp_fastopen sysctl"); + close(fd); + } +} + +static struct rlimit rlim_old; + +static __attribute__((constructor)) void main_ctor(void) +{ + getrlimit(RLIMIT_MEMLOCK, &rlim_old); + + if (rlim_old.rlim_cur != RLIM_INFINITY) { + struct rlimit rlim_new; + + rlim_new.rlim_cur = rlim_old.rlim_cur + (1UL << 20); + rlim_new.rlim_max = rlim_old.rlim_max + (1UL << 20); + setrlimit(RLIMIT_MEMLOCK, &rlim_new); + } +} + +static __attribute__((destructor)) void main_dtor(void) +{ + setrlimit(RLIMIT_MEMLOCK, &rlim_old); +} + +int main(void) +{ + fprintf(stderr, "---- IPv4 UDP ----\n"); + /* NOTE: UDP socket lookups traverse a different code path when there + * are > 10 sockets in a group. Run the bpf test through both paths. + */ + test_reuseport_ebpf((struct test_params) { + .recv_family = AF_INET, + .send_family = AF_INET, + .protocol = SOCK_DGRAM, + .recv_socks = 10, + .recv_port = 8000, + .send_port_min = 9000}); + test_reuseport_ebpf((struct test_params) { + .recv_family = AF_INET, + .send_family = AF_INET, + .protocol = SOCK_DGRAM, + .recv_socks = 20, + .recv_port = 8000, + .send_port_min = 9000}); + test_reuseport_cbpf((struct test_params) { + .recv_family = AF_INET, + .send_family = AF_INET, + .protocol = SOCK_DGRAM, + .recv_socks = 10, + .recv_port = 8001, + .send_port_min = 9020}); + test_reuseport_cbpf((struct test_params) { + .recv_family = AF_INET, + .send_family = AF_INET, + .protocol = SOCK_DGRAM, + .recv_socks = 20, + .recv_port = 8001, + .send_port_min = 9020}); + test_extra_filter((struct test_params) { + .recv_family = AF_INET, + .protocol = SOCK_DGRAM, + .recv_port = 8002}); + test_filter_no_reuseport((struct test_params) { + .recv_family = AF_INET, + .protocol = SOCK_DGRAM, + .recv_port = 8008}); + + fprintf(stderr, "---- IPv6 UDP ----\n"); + test_reuseport_ebpf((struct test_params) { + .recv_family = AF_INET6, + .send_family = AF_INET6, + .protocol = SOCK_DGRAM, + .recv_socks = 10, + .recv_port = 8003, + .send_port_min = 9040}); + test_reuseport_ebpf((struct test_params) { + .recv_family = AF_INET6, + .send_family = AF_INET6, + .protocol = SOCK_DGRAM, + .recv_socks = 20, + .recv_port = 8003, + .send_port_min = 9040}); + test_reuseport_cbpf((struct test_params) { + .recv_family = AF_INET6, + .send_family = AF_INET6, + .protocol = SOCK_DGRAM, + .recv_socks = 10, + .recv_port = 8004, + .send_port_min = 9060}); + test_reuseport_cbpf((struct test_params) { + .recv_family = AF_INET6, + .send_family = AF_INET6, + .protocol = SOCK_DGRAM, + .recv_socks = 20, + .recv_port = 8004, + .send_port_min = 9060}); + test_extra_filter((struct test_params) { + .recv_family = AF_INET6, + .protocol = SOCK_DGRAM, + .recv_port = 8005}); + test_filter_no_reuseport((struct test_params) { + .recv_family = AF_INET6, + .protocol = SOCK_DGRAM, + .recv_port = 8009}); + + fprintf(stderr, "---- IPv6 UDP w/ mapped IPv4 ----\n"); + test_reuseport_ebpf((struct test_params) { + .recv_family = AF_INET6, + .send_family = AF_INET, + .protocol = SOCK_DGRAM, + .recv_socks = 20, + .recv_port = 8006, + .send_port_min = 9080}); + test_reuseport_ebpf((struct test_params) { + .recv_family = AF_INET6, + .send_family = AF_INET, + .protocol = SOCK_DGRAM, + .recv_socks = 10, + .recv_port = 8006, + .send_port_min = 9080}); + test_reuseport_cbpf((struct test_params) { + .recv_family = AF_INET6, + .send_family = AF_INET, + .protocol = SOCK_DGRAM, + .recv_socks = 10, + .recv_port = 8007, + .send_port_min = 9100}); + test_reuseport_cbpf((struct test_params) { + .recv_family = AF_INET6, + .send_family = AF_INET, + .protocol = SOCK_DGRAM, + .recv_socks = 20, + .recv_port = 8007, + .send_port_min = 9100}); + + /* TCP fastopen is required for the TCP tests */ + enable_fastopen(); + fprintf(stderr, "---- IPv4 TCP ----\n"); + test_reuseport_ebpf((struct test_params) { + .recv_family = AF_INET, + .send_family = AF_INET, + .protocol = SOCK_STREAM, + .recv_socks = 10, + .recv_port = 8008, + .send_port_min = 9120}); + test_reuseport_cbpf((struct test_params) { + .recv_family = AF_INET, + .send_family = AF_INET, + .protocol = SOCK_STREAM, + .recv_socks = 10, + .recv_port = 8009, + .send_port_min = 9160}); + test_extra_filter((struct test_params) { + .recv_family = AF_INET, + .protocol = SOCK_STREAM, + .recv_port = 8010}); + test_filter_no_reuseport((struct test_params) { + .recv_family = AF_INET, + .protocol = SOCK_STREAM, + .recv_port = 8011}); + + fprintf(stderr, "---- IPv6 TCP ----\n"); + test_reuseport_ebpf((struct test_params) { + .recv_family = AF_INET6, + .send_family = AF_INET6, + .protocol = SOCK_STREAM, + .recv_socks = 10, + .recv_port = 8012, + .send_port_min = 9200}); + test_reuseport_cbpf((struct test_params) { + .recv_family = AF_INET6, + .send_family = AF_INET6, + .protocol = SOCK_STREAM, + .recv_socks = 10, + .recv_port = 8013, + .send_port_min = 9240}); + test_extra_filter((struct test_params) { + .recv_family = AF_INET6, + .protocol = SOCK_STREAM, + .recv_port = 8014}); + test_filter_no_reuseport((struct test_params) { + .recv_family = AF_INET6, + .protocol = SOCK_STREAM, + .recv_port = 8015}); + + fprintf(stderr, "---- IPv6 TCP w/ mapped IPv4 ----\n"); + test_reuseport_ebpf((struct test_params) { + .recv_family = AF_INET6, + .send_family = AF_INET, + .protocol = SOCK_STREAM, + .recv_socks = 10, + .recv_port = 8016, + .send_port_min = 9320}); + test_reuseport_cbpf((struct test_params) { + .recv_family = AF_INET6, + .send_family = AF_INET, + .protocol = SOCK_STREAM, + .recv_socks = 10, + .recv_port = 8017, + .send_port_min = 9360}); + + test_filter_without_bind(); + + fprintf(stderr, "SUCCESS\n"); + return 0; +} diff --git a/tools/testing/selftests/net/reuseport_bpf_cpu.c b/tools/testing/selftests/net/reuseport_bpf_cpu.c new file mode 100644 index 000000000..2d6461747 --- /dev/null +++ b/tools/testing/selftests/net/reuseport_bpf_cpu.c @@ -0,0 +1,259 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Test functionality of BPF filters with SO_REUSEPORT. This program creates + * an SO_REUSEPORT receiver group containing one socket per CPU core. It then + * creates a BPF program that will select a socket from this group based + * on the core id that receives the packet. The sending code artificially + * moves itself to run on different core ids and sends one message from + * each core. Since these packets are delivered over loopback, they should + * arrive on the same core that sent them. The receiving code then ensures + * that the packet was received on the socket for the corresponding core id. + * This entire process is done for several different core id permutations + * and for each IPv4/IPv6 and TCP/UDP combination. + */ + +#define _GNU_SOURCE + +#include <arpa/inet.h> +#include <errno.h> +#include <error.h> +#include <linux/filter.h> +#include <linux/in.h> +#include <linux/unistd.h> +#include <sched.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/epoll.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <unistd.h> + +static const int PORT = 8888; + +static void build_rcv_group(int *rcv_fd, size_t len, int family, int proto) +{ + struct sockaddr_storage addr; + struct sockaddr_in *addr4; + struct sockaddr_in6 *addr6; + size_t i; + int opt; + + switch (family) { + case AF_INET: + addr4 = (struct sockaddr_in *)&addr; + addr4->sin_family = AF_INET; + addr4->sin_addr.s_addr = htonl(INADDR_ANY); + addr4->sin_port = htons(PORT); + break; + case AF_INET6: + addr6 = (struct sockaddr_in6 *)&addr; + addr6->sin6_family = AF_INET6; + addr6->sin6_addr = in6addr_any; + addr6->sin6_port = htons(PORT); + break; + default: + error(1, 0, "Unsupported family %d", family); + } + + for (i = 0; i < len; ++i) { + rcv_fd[i] = socket(family, proto, 0); + if (rcv_fd[i] < 0) + error(1, errno, "failed to create receive socket"); + + opt = 1; + if (setsockopt(rcv_fd[i], SOL_SOCKET, SO_REUSEPORT, &opt, + sizeof(opt))) + error(1, errno, "failed to set SO_REUSEPORT"); + + if (bind(rcv_fd[i], (struct sockaddr *)&addr, sizeof(addr))) + error(1, errno, "failed to bind receive socket"); + + if (proto == SOCK_STREAM && listen(rcv_fd[i], len * 10)) + error(1, errno, "failed to listen on receive port"); + } +} + +static void attach_bpf(int fd) +{ + struct sock_filter code[] = { + /* A = raw_smp_processor_id() */ + { BPF_LD | BPF_W | BPF_ABS, 0, 0, SKF_AD_OFF + SKF_AD_CPU }, + /* return A */ + { BPF_RET | BPF_A, 0, 0, 0 }, + }; + struct sock_fprog p = { + .len = 2, + .filter = code, + }; + + if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_REUSEPORT_CBPF, &p, sizeof(p))) + error(1, errno, "failed to set SO_ATTACH_REUSEPORT_CBPF"); +} + +static void send_from_cpu(int cpu_id, int family, int proto) +{ + struct sockaddr_storage saddr, daddr; + struct sockaddr_in *saddr4, *daddr4; + struct sockaddr_in6 *saddr6, *daddr6; + cpu_set_t cpu_set; + int fd; + + switch (family) { + case AF_INET: + saddr4 = (struct sockaddr_in *)&saddr; + saddr4->sin_family = AF_INET; + saddr4->sin_addr.s_addr = htonl(INADDR_ANY); + saddr4->sin_port = 0; + + daddr4 = (struct sockaddr_in *)&daddr; + daddr4->sin_family = AF_INET; + daddr4->sin_addr.s_addr = htonl(INADDR_LOOPBACK); + daddr4->sin_port = htons(PORT); + break; + case AF_INET6: + saddr6 = (struct sockaddr_in6 *)&saddr; + saddr6->sin6_family = AF_INET6; + saddr6->sin6_addr = in6addr_any; + saddr6->sin6_port = 0; + + daddr6 = (struct sockaddr_in6 *)&daddr; + daddr6->sin6_family = AF_INET6; + daddr6->sin6_addr = in6addr_loopback; + daddr6->sin6_port = htons(PORT); + break; + default: + error(1, 0, "Unsupported family %d", family); + } + + memset(&cpu_set, 0, sizeof(cpu_set)); + CPU_SET(cpu_id, &cpu_set); + if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) + error(1, errno, "failed to pin to cpu"); + + fd = socket(family, proto, 0); + if (fd < 0) + error(1, errno, "failed to create send socket"); + + if (bind(fd, (struct sockaddr *)&saddr, sizeof(saddr))) + error(1, errno, "failed to bind send socket"); + + if (connect(fd, (struct sockaddr *)&daddr, sizeof(daddr))) + error(1, errno, "failed to connect send socket"); + + if (send(fd, "a", 1, 0) < 0) + error(1, errno, "failed to send message"); + + close(fd); +} + +static +void receive_on_cpu(int *rcv_fd, int len, int epfd, int cpu_id, int proto) +{ + struct epoll_event ev; + int i, fd; + char buf[8]; + + i = epoll_wait(epfd, &ev, 1, -1); + if (i < 0) + error(1, errno, "epoll_wait failed"); + + if (proto == SOCK_STREAM) { + fd = accept(ev.data.fd, NULL, NULL); + if (fd < 0) + error(1, errno, "failed to accept"); + i = recv(fd, buf, sizeof(buf), 0); + close(fd); + } else { + i = recv(ev.data.fd, buf, sizeof(buf), 0); + } + + if (i < 0) + error(1, errno, "failed to recv"); + + for (i = 0; i < len; ++i) + if (ev.data.fd == rcv_fd[i]) + break; + if (i == len) + error(1, 0, "failed to find socket"); + fprintf(stderr, "send cpu %d, receive socket %d\n", cpu_id, i); + if (cpu_id != i) + error(1, 0, "cpu id/receive socket mismatch"); +} + +static void test(int *rcv_fd, int len, int family, int proto) +{ + struct epoll_event ev; + int epfd, cpu; + + build_rcv_group(rcv_fd, len, family, proto); + attach_bpf(rcv_fd[0]); + + epfd = epoll_create(1); + if (epfd < 0) + error(1, errno, "failed to create epoll"); + for (cpu = 0; cpu < len; ++cpu) { + ev.events = EPOLLIN; + ev.data.fd = rcv_fd[cpu]; + if (epoll_ctl(epfd, EPOLL_CTL_ADD, rcv_fd[cpu], &ev)) + error(1, errno, "failed to register sock epoll"); + } + + /* Forward iterate */ + for (cpu = 0; cpu < len; ++cpu) { + send_from_cpu(cpu, family, proto); + receive_on_cpu(rcv_fd, len, epfd, cpu, proto); + } + + /* Reverse iterate */ + for (cpu = len - 1; cpu >= 0; --cpu) { + send_from_cpu(cpu, family, proto); + receive_on_cpu(rcv_fd, len, epfd, cpu, proto); + } + + /* Even cores */ + for (cpu = 0; cpu < len; cpu += 2) { + send_from_cpu(cpu, family, proto); + receive_on_cpu(rcv_fd, len, epfd, cpu, proto); + } + + /* Odd cores */ + for (cpu = 1; cpu < len; cpu += 2) { + send_from_cpu(cpu, family, proto); + receive_on_cpu(rcv_fd, len, epfd, cpu, proto); + } + + close(epfd); + for (cpu = 0; cpu < len; ++cpu) + close(rcv_fd[cpu]); +} + +int main(void) +{ + int *rcv_fd, cpus; + + cpus = sysconf(_SC_NPROCESSORS_ONLN); + if (cpus <= 0) + error(1, errno, "failed counting cpus"); + + rcv_fd = calloc(cpus, sizeof(int)); + if (!rcv_fd) + error(1, 0, "failed to allocate array"); + + fprintf(stderr, "---- IPv4 UDP ----\n"); + test(rcv_fd, cpus, AF_INET, SOCK_DGRAM); + + fprintf(stderr, "---- IPv6 UDP ----\n"); + test(rcv_fd, cpus, AF_INET6, SOCK_DGRAM); + + fprintf(stderr, "---- IPv4 TCP ----\n"); + test(rcv_fd, cpus, AF_INET, SOCK_STREAM); + + fprintf(stderr, "---- IPv6 TCP ----\n"); + test(rcv_fd, cpus, AF_INET6, SOCK_STREAM); + + free(rcv_fd); + + fprintf(stderr, "SUCCESS\n"); + return 0; +} diff --git a/tools/testing/selftests/net/reuseport_bpf_numa.c b/tools/testing/selftests/net/reuseport_bpf_numa.c new file mode 100644 index 000000000..c9f478b40 --- /dev/null +++ b/tools/testing/selftests/net/reuseport_bpf_numa.c @@ -0,0 +1,258 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Test functionality of BPF filters with SO_REUSEPORT. Same test as + * in reuseport_bpf_cpu, only as one socket per NUMA node. + */ + +#define _GNU_SOURCE + +#include <arpa/inet.h> +#include <errno.h> +#include <error.h> +#include <linux/filter.h> +#include <linux/bpf.h> +#include <linux/in.h> +#include <linux/unistd.h> +#include <sched.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/epoll.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <unistd.h> +#include <numa.h> + +#include "../kselftest.h" + +static const int PORT = 8888; + +static void build_rcv_group(int *rcv_fd, size_t len, int family, int proto) +{ + struct sockaddr_storage addr; + struct sockaddr_in *addr4; + struct sockaddr_in6 *addr6; + size_t i; + int opt; + + switch (family) { + case AF_INET: + addr4 = (struct sockaddr_in *)&addr; + addr4->sin_family = AF_INET; + addr4->sin_addr.s_addr = htonl(INADDR_ANY); + addr4->sin_port = htons(PORT); + break; + case AF_INET6: + addr6 = (struct sockaddr_in6 *)&addr; + addr6->sin6_family = AF_INET6; + addr6->sin6_addr = in6addr_any; + addr6->sin6_port = htons(PORT); + break; + default: + error(1, 0, "Unsupported family %d", family); + } + + for (i = 0; i < len; ++i) { + rcv_fd[i] = socket(family, proto, 0); + if (rcv_fd[i] < 0) + error(1, errno, "failed to create receive socket"); + + opt = 1; + if (setsockopt(rcv_fd[i], SOL_SOCKET, SO_REUSEPORT, &opt, + sizeof(opt))) + error(1, errno, "failed to set SO_REUSEPORT"); + + if (bind(rcv_fd[i], (struct sockaddr *)&addr, sizeof(addr))) + error(1, errno, "failed to bind receive socket"); + + if (proto == SOCK_STREAM && listen(rcv_fd[i], len * 10)) + error(1, errno, "failed to listen on receive port"); + } +} + +static void attach_bpf(int fd) +{ + static char bpf_log_buf[65536]; + static const char bpf_license[] = ""; + + int bpf_fd; + const struct bpf_insn prog[] = { + /* R0 = bpf_get_numa_node_id() */ + { BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_numa_node_id }, + /* return R0 */ + { BPF_JMP | BPF_EXIT, 0, 0, 0, 0 } + }; + union bpf_attr attr; + + memset(&attr, 0, sizeof(attr)); + attr.prog_type = BPF_PROG_TYPE_SOCKET_FILTER; + attr.insn_cnt = sizeof(prog) / sizeof(prog[0]); + attr.insns = (unsigned long) &prog; + attr.license = (unsigned long) &bpf_license; + attr.log_buf = (unsigned long) &bpf_log_buf; + attr.log_size = sizeof(bpf_log_buf); + attr.log_level = 1; + + bpf_fd = syscall(__NR_bpf, BPF_PROG_LOAD, &attr, sizeof(attr)); + if (bpf_fd < 0) + error(1, errno, "ebpf error. log:\n%s\n", bpf_log_buf); + + if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_REUSEPORT_EBPF, &bpf_fd, + sizeof(bpf_fd))) + error(1, errno, "failed to set SO_ATTACH_REUSEPORT_EBPF"); + + close(bpf_fd); +} + +static void send_from_node(int node_id, int family, int proto) +{ + struct sockaddr_storage saddr, daddr; + struct sockaddr_in *saddr4, *daddr4; + struct sockaddr_in6 *saddr6, *daddr6; + int fd; + + switch (family) { + case AF_INET: + saddr4 = (struct sockaddr_in *)&saddr; + saddr4->sin_family = AF_INET; + saddr4->sin_addr.s_addr = htonl(INADDR_ANY); + saddr4->sin_port = 0; + + daddr4 = (struct sockaddr_in *)&daddr; + daddr4->sin_family = AF_INET; + daddr4->sin_addr.s_addr = htonl(INADDR_LOOPBACK); + daddr4->sin_port = htons(PORT); + break; + case AF_INET6: + saddr6 = (struct sockaddr_in6 *)&saddr; + saddr6->sin6_family = AF_INET6; + saddr6->sin6_addr = in6addr_any; + saddr6->sin6_port = 0; + + daddr6 = (struct sockaddr_in6 *)&daddr; + daddr6->sin6_family = AF_INET6; + daddr6->sin6_addr = in6addr_loopback; + daddr6->sin6_port = htons(PORT); + break; + default: + error(1, 0, "Unsupported family %d", family); + } + + if (numa_run_on_node(node_id) < 0) + error(1, errno, "failed to pin to node"); + + fd = socket(family, proto, 0); + if (fd < 0) + error(1, errno, "failed to create send socket"); + + if (bind(fd, (struct sockaddr *)&saddr, sizeof(saddr))) + error(1, errno, "failed to bind send socket"); + + if (connect(fd, (struct sockaddr *)&daddr, sizeof(daddr))) + error(1, errno, "failed to connect send socket"); + + if (send(fd, "a", 1, 0) < 0) + error(1, errno, "failed to send message"); + + close(fd); +} + +static +void receive_on_node(int *rcv_fd, int len, int epfd, int node_id, int proto) +{ + struct epoll_event ev; + int i, fd; + char buf[8]; + + i = epoll_wait(epfd, &ev, 1, -1); + if (i < 0) + error(1, errno, "epoll_wait failed"); + + if (proto == SOCK_STREAM) { + fd = accept(ev.data.fd, NULL, NULL); + if (fd < 0) + error(1, errno, "failed to accept"); + i = recv(fd, buf, sizeof(buf), 0); + close(fd); + } else { + i = recv(ev.data.fd, buf, sizeof(buf), 0); + } + + if (i < 0) + error(1, errno, "failed to recv"); + + for (i = 0; i < len; ++i) + if (ev.data.fd == rcv_fd[i]) + break; + if (i == len) + error(1, 0, "failed to find socket"); + fprintf(stderr, "send node %d, receive socket %d\n", node_id, i); + if (node_id != i) + error(1, 0, "node id/receive socket mismatch"); +} + +static void test(int *rcv_fd, int len, int family, int proto) +{ + struct epoll_event ev; + int epfd, node; + + build_rcv_group(rcv_fd, len, family, proto); + attach_bpf(rcv_fd[0]); + + epfd = epoll_create(1); + if (epfd < 0) + error(1, errno, "failed to create epoll"); + for (node = 0; node < len; ++node) { + ev.events = EPOLLIN; + ev.data.fd = rcv_fd[node]; + if (epoll_ctl(epfd, EPOLL_CTL_ADD, rcv_fd[node], &ev)) + error(1, errno, "failed to register sock epoll"); + } + + /* Forward iterate */ + for (node = 0; node < len; ++node) { + send_from_node(node, family, proto); + receive_on_node(rcv_fd, len, epfd, node, proto); + } + + /* Reverse iterate */ + for (node = len - 1; node >= 0; --node) { + send_from_node(node, family, proto); + receive_on_node(rcv_fd, len, epfd, node, proto); + } + + close(epfd); + for (node = 0; node < len; ++node) + close(rcv_fd[node]); +} + +int main(void) +{ + int *rcv_fd, nodes; + + if (numa_available() < 0) + ksft_exit_skip("no numa api support\n"); + + nodes = numa_max_node() + 1; + + rcv_fd = calloc(nodes, sizeof(int)); + if (!rcv_fd) + error(1, 0, "failed to allocate array"); + + fprintf(stderr, "---- IPv4 UDP ----\n"); + test(rcv_fd, nodes, AF_INET, SOCK_DGRAM); + + fprintf(stderr, "---- IPv6 UDP ----\n"); + test(rcv_fd, nodes, AF_INET6, SOCK_DGRAM); + + fprintf(stderr, "---- IPv4 TCP ----\n"); + test(rcv_fd, nodes, AF_INET, SOCK_STREAM); + + fprintf(stderr, "---- IPv6 TCP ----\n"); + test(rcv_fd, nodes, AF_INET6, SOCK_STREAM); + + free(rcv_fd); + + fprintf(stderr, "SUCCESS\n"); + return 0; +} diff --git a/tools/testing/selftests/net/reuseport_dualstack.c b/tools/testing/selftests/net/reuseport_dualstack.c new file mode 100644 index 000000000..fb7a59ed7 --- /dev/null +++ b/tools/testing/selftests/net/reuseport_dualstack.c @@ -0,0 +1,210 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * It is possible to use SO_REUSEPORT to open multiple sockets bound to + * equivalent local addresses using AF_INET and AF_INET6 at the same time. If + * the AF_INET6 socket has IPV6_V6ONLY set, it's clear which socket should + * receive a given incoming packet. However, when it is not set, incoming v4 + * packets should prefer the AF_INET socket(s). This behavior was defined with + * the original SO_REUSEPORT implementation, but broke with + * e32ea7e74727 ("soreuseport: fast reuseport UDP socket selection") + * This test creates these mixed AF_INET/AF_INET6 sockets and asserts the + * AF_INET preference for v4 packets. + */ + +#define _GNU_SOURCE + +#include <arpa/inet.h> +#include <errno.h> +#include <error.h> +#include <linux/in.h> +#include <linux/unistd.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/epoll.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <unistd.h> + +static const int PORT = 8888; + +static void build_rcv_fd(int family, int proto, int *rcv_fds, int count) +{ + struct sockaddr_storage addr; + struct sockaddr_in *addr4; + struct sockaddr_in6 *addr6; + int opt, i; + + switch (family) { + case AF_INET: + addr4 = (struct sockaddr_in *)&addr; + addr4->sin_family = AF_INET; + addr4->sin_addr.s_addr = htonl(INADDR_ANY); + addr4->sin_port = htons(PORT); + break; + case AF_INET6: + addr6 = (struct sockaddr_in6 *)&addr; + addr6->sin6_family = AF_INET6; + addr6->sin6_addr = in6addr_any; + addr6->sin6_port = htons(PORT); + break; + default: + error(1, 0, "Unsupported family %d", family); + } + + for (i = 0; i < count; ++i) { + rcv_fds[i] = socket(family, proto, 0); + if (rcv_fds[i] < 0) + error(1, errno, "failed to create receive socket"); + + opt = 1; + if (setsockopt(rcv_fds[i], SOL_SOCKET, SO_REUSEPORT, &opt, + sizeof(opt))) + error(1, errno, "failed to set SO_REUSEPORT"); + + if (bind(rcv_fds[i], (struct sockaddr *)&addr, sizeof(addr))) + error(1, errno, "failed to bind receive socket"); + + if (proto == SOCK_STREAM && listen(rcv_fds[i], 10)) + error(1, errno, "failed to listen on receive port"); + } +} + +static void send_from_v4(int proto) +{ + struct sockaddr_in saddr, daddr; + int fd; + + saddr.sin_family = AF_INET; + saddr.sin_addr.s_addr = htonl(INADDR_ANY); + saddr.sin_port = 0; + + daddr.sin_family = AF_INET; + daddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); + daddr.sin_port = htons(PORT); + + fd = socket(AF_INET, proto, 0); + if (fd < 0) + error(1, errno, "failed to create send socket"); + + if (bind(fd, (struct sockaddr *)&saddr, sizeof(saddr))) + error(1, errno, "failed to bind send socket"); + + if (connect(fd, (struct sockaddr *)&daddr, sizeof(daddr))) + error(1, errno, "failed to connect send socket"); + + if (send(fd, "a", 1, 0) < 0) + error(1, errno, "failed to send message"); + + close(fd); +} + +static int receive_once(int epfd, int proto) +{ + struct epoll_event ev; + int i, fd; + char buf[8]; + + i = epoll_wait(epfd, &ev, 1, -1); + if (i < 0) + error(1, errno, "epoll_wait failed"); + + if (proto == SOCK_STREAM) { + fd = accept(ev.data.fd, NULL, NULL); + if (fd < 0) + error(1, errno, "failed to accept"); + i = recv(fd, buf, sizeof(buf), 0); + close(fd); + } else { + i = recv(ev.data.fd, buf, sizeof(buf), 0); + } + + if (i < 0) + error(1, errno, "failed to recv"); + + return ev.data.fd; +} + +static void test(int *rcv_fds, int count, int proto) +{ + struct epoll_event ev; + int epfd, i, test_fd; + int test_family; + socklen_t len; + + epfd = epoll_create(1); + if (epfd < 0) + error(1, errno, "failed to create epoll"); + + ev.events = EPOLLIN; + for (i = 0; i < count; ++i) { + ev.data.fd = rcv_fds[i]; + if (epoll_ctl(epfd, EPOLL_CTL_ADD, rcv_fds[i], &ev)) + error(1, errno, "failed to register sock epoll"); + } + + send_from_v4(proto); + + test_fd = receive_once(epfd, proto); + len = sizeof(test_family); + if (getsockopt(test_fd, SOL_SOCKET, SO_DOMAIN, &test_family, &len)) + error(1, errno, "failed to read socket domain"); + if (test_family != AF_INET) + error(1, 0, "expected to receive on v4 socket but got v6 (%d)", + test_family); + + close(epfd); +} + +int main(void) +{ + int rcv_fds[32], i; + + fprintf(stderr, "---- UDP IPv4 created before IPv6 ----\n"); + build_rcv_fd(AF_INET, SOCK_DGRAM, rcv_fds, 5); + build_rcv_fd(AF_INET6, SOCK_DGRAM, &(rcv_fds[5]), 5); + test(rcv_fds, 10, SOCK_DGRAM); + for (i = 0; i < 10; ++i) + close(rcv_fds[i]); + + fprintf(stderr, "---- UDP IPv6 created before IPv4 ----\n"); + build_rcv_fd(AF_INET6, SOCK_DGRAM, rcv_fds, 5); + build_rcv_fd(AF_INET, SOCK_DGRAM, &(rcv_fds[5]), 5); + test(rcv_fds, 10, SOCK_DGRAM); + for (i = 0; i < 10; ++i) + close(rcv_fds[i]); + + /* NOTE: UDP socket lookups traverse a different code path when there + * are > 10 sockets in a group. + */ + fprintf(stderr, "---- UDP IPv4 created before IPv6 (large) ----\n"); + build_rcv_fd(AF_INET, SOCK_DGRAM, rcv_fds, 16); + build_rcv_fd(AF_INET6, SOCK_DGRAM, &(rcv_fds[16]), 16); + test(rcv_fds, 32, SOCK_DGRAM); + for (i = 0; i < 32; ++i) + close(rcv_fds[i]); + + fprintf(stderr, "---- UDP IPv6 created before IPv4 (large) ----\n"); + build_rcv_fd(AF_INET6, SOCK_DGRAM, rcv_fds, 16); + build_rcv_fd(AF_INET, SOCK_DGRAM, &(rcv_fds[16]), 16); + test(rcv_fds, 32, SOCK_DGRAM); + for (i = 0; i < 32; ++i) + close(rcv_fds[i]); + + fprintf(stderr, "---- TCP IPv4 created before IPv6 ----\n"); + build_rcv_fd(AF_INET, SOCK_STREAM, rcv_fds, 5); + build_rcv_fd(AF_INET6, SOCK_STREAM, &(rcv_fds[5]), 5); + test(rcv_fds, 10, SOCK_STREAM); + for (i = 0; i < 10; ++i) + close(rcv_fds[i]); + + fprintf(stderr, "---- TCP IPv6 created before IPv4 ----\n"); + build_rcv_fd(AF_INET6, SOCK_STREAM, rcv_fds, 5); + build_rcv_fd(AF_INET, SOCK_STREAM, &(rcv_fds[5]), 5); + test(rcv_fds, 10, SOCK_STREAM); + for (i = 0; i < 10; ++i) + close(rcv_fds[i]); + + fprintf(stderr, "SUCCESS\n"); + return 0; +} diff --git a/tools/testing/selftests/net/rtnetlink.sh b/tools/testing/selftests/net/rtnetlink.sh new file mode 100755 index 000000000..ff665de78 --- /dev/null +++ b/tools/testing/selftests/net/rtnetlink.sh @@ -0,0 +1,1023 @@ +#!/bin/bash +# +# This test is for checking rtnetlink callpaths, and get as much coverage as possible. +# +# set -e + +devdummy="test-dummy0" +ret=0 + +# Kselftest framework requirement - SKIP code is 4. +ksft_skip=4 + +# set global exit status, but never reset nonzero one. +check_err() +{ + if [ $ret -eq 0 ]; then + ret=$1 + fi +} + +# same but inverted -- used when command must fail for test to pass +check_fail() +{ + if [ $1 -eq 0 ]; then + ret=1 + fi +} + +kci_add_dummy() +{ + ip link add name "$devdummy" type dummy + check_err $? + ip link set "$devdummy" up + check_err $? +} + +kci_del_dummy() +{ + ip link del dev "$devdummy" + check_err $? +} + +kci_test_netconf() +{ + dev="$1" + r=$ret + + ip netconf show dev "$dev" > /dev/null + check_err $? + + for f in 4 6; do + ip -$f netconf show dev "$dev" > /dev/null + check_err $? + done + + if [ $ret -ne 0 ] ;then + echo "FAIL: ip netconf show $dev" + test $r -eq 0 && ret=0 + return 1 + fi +} + +# add a bridge with vlans on top +kci_test_bridge() +{ + devbr="test-br0" + vlandev="testbr-vlan1" + + ret=0 + ip link add name "$devbr" type bridge + check_err $? + + ip link set dev "$devdummy" master "$devbr" + check_err $? + + ip link set "$devbr" up + check_err $? + + ip link add link "$devbr" name "$vlandev" type vlan id 1 + check_err $? + ip addr add dev "$vlandev" 10.200.7.23/30 + check_err $? + ip -6 addr add dev "$vlandev" dead:42::1234/64 + check_err $? + ip -d link > /dev/null + check_err $? + ip r s t all > /dev/null + check_err $? + + for name in "$devbr" "$vlandev" "$devdummy" ; do + kci_test_netconf "$name" + done + + ip -6 addr del dev "$vlandev" dead:42::1234/64 + check_err $? + + ip link del dev "$vlandev" + check_err $? + ip link del dev "$devbr" + check_err $? + + if [ $ret -ne 0 ];then + echo "FAIL: bridge setup" + return 1 + fi + echo "PASS: bridge setup" + +} + +kci_test_gre() +{ + gredev=neta + rem=10.42.42.1 + loc=10.0.0.1 + + ret=0 + ip tunnel add $gredev mode gre remote $rem local $loc ttl 1 + check_err $? + ip link set $gredev up + check_err $? + ip addr add 10.23.7.10 dev $gredev + check_err $? + ip route add 10.23.8.0/30 dev $gredev + check_err $? + ip addr add dev "$devdummy" 10.23.7.11/24 + check_err $? + ip link > /dev/null + check_err $? + ip addr > /dev/null + check_err $? + + kci_test_netconf "$gredev" + + ip addr del dev "$devdummy" 10.23.7.11/24 + check_err $? + + ip link del $gredev + check_err $? + + if [ $ret -ne 0 ];then + echo "FAIL: gre tunnel endpoint" + return 1 + fi + echo "PASS: gre tunnel endpoint" +} + +# tc uses rtnetlink too, for full tc testing +# please see tools/testing/selftests/tc-testing. +kci_test_tc() +{ + dev=lo + ret=0 + + tc qdisc add dev "$dev" root handle 1: htb + check_err $? + tc class add dev "$dev" parent 1: classid 1:10 htb rate 1mbit + check_err $? + tc filter add dev "$dev" parent 1:0 prio 5 handle ffe: protocol ip u32 divisor 256 + check_err $? + tc filter add dev "$dev" parent 1:0 prio 5 handle ffd: protocol ip u32 divisor 256 + check_err $? + tc filter add dev "$dev" parent 1:0 prio 5 handle ffc: protocol ip u32 divisor 256 + check_err $? + tc filter add dev "$dev" protocol ip parent 1: prio 5 handle ffe:2:3 u32 ht ffe:2: match ip src 10.0.0.3 flowid 1:10 + check_err $? + tc filter add dev "$dev" protocol ip parent 1: prio 5 handle ffe:2:2 u32 ht ffe:2: match ip src 10.0.0.2 flowid 1:10 + check_err $? + tc filter show dev "$dev" parent 1:0 > /dev/null + check_err $? + tc filter del dev "$dev" protocol ip parent 1: prio 5 handle ffe:2:3 u32 + check_err $? + tc filter show dev "$dev" parent 1:0 > /dev/null + check_err $? + tc qdisc del dev "$dev" root handle 1: htb + check_err $? + + if [ $ret -ne 0 ];then + echo "FAIL: tc htb hierarchy" + return 1 + fi + echo "PASS: tc htb hierarchy" + +} + +kci_test_polrouting() +{ + ret=0 + ip rule add fwmark 1 lookup 100 + check_err $? + ip route add local 0.0.0.0/0 dev lo table 100 + check_err $? + ip r s t all > /dev/null + check_err $? + ip rule del fwmark 1 lookup 100 + check_err $? + ip route del local 0.0.0.0/0 dev lo table 100 + check_err $? + + if [ $ret -ne 0 ];then + echo "FAIL: policy route test" + return 1 + fi + echo "PASS: policy routing" +} + +kci_test_route_get() +{ + ret=0 + + ip route get 127.0.0.1 > /dev/null + check_err $? + ip route get 127.0.0.1 dev "$devdummy" > /dev/null + check_err $? + ip route get ::1 > /dev/null + check_err $? + ip route get fe80::1 dev "$devdummy" > /dev/null + check_err $? + ip route get 127.0.0.1 from 127.0.0.1 oif lo tos 0x1 mark 0x1 > /dev/null + check_err $? + ip route get ::1 from ::1 iif lo oif lo tos 0x1 mark 0x1 > /dev/null + check_err $? + ip addr add dev "$devdummy" 10.23.7.11/24 + check_err $? + ip route get 10.23.7.11 from 10.23.7.12 iif "$devdummy" > /dev/null + check_err $? + ip addr del dev "$devdummy" 10.23.7.11/24 + check_err $? + + if [ $ret -ne 0 ];then + echo "FAIL: route get" + return 1 + fi + + echo "PASS: route get" +} + +kci_test_addrlft() +{ + for i in $(seq 10 100) ;do + lft=$(((RANDOM%3) + 1)) + ip addr add 10.23.11.$i/32 dev "$devdummy" preferred_lft $lft valid_lft $((lft+1)) + check_err $? + done + + sleep 5 + + ip addr show dev "$devdummy" | grep "10.23.11." + if [ $? -eq 0 ]; then + echo "FAIL: preferred_lft addresses remaining" + check_err 1 + return + fi + + echo "PASS: preferred_lft addresses have expired" +} + +kci_test_addrlabel() +{ + ret=0 + + ip addrlabel add prefix dead::/64 dev lo label 1 + check_err $? + + ip addrlabel list |grep -q "prefix dead::/64 dev lo label 1" + check_err $? + + ip addrlabel del prefix dead::/64 dev lo label 1 2> /dev/null + check_err $? + + ip addrlabel add prefix dead::/64 label 1 2> /dev/null + check_err $? + + ip addrlabel del prefix dead::/64 label 1 2> /dev/null + check_err $? + + # concurrent add/delete + for i in $(seq 1 1000); do + ip addrlabel add prefix 1c3::/64 label 12345 2>/dev/null + done & + + for i in $(seq 1 1000); do + ip addrlabel del prefix 1c3::/64 label 12345 2>/dev/null + done + + wait + + ip addrlabel del prefix 1c3::/64 label 12345 2>/dev/null + + if [ $ret -ne 0 ];then + echo "FAIL: ipv6 addrlabel" + return 1 + fi + + echo "PASS: ipv6 addrlabel" +} + +kci_test_ifalias() +{ + ret=0 + namewant=$(uuidgen) + syspathname="/sys/class/net/$devdummy/ifalias" + + ip link set dev "$devdummy" alias "$namewant" + check_err $? + + if [ $ret -ne 0 ]; then + echo "FAIL: cannot set interface alias of $devdummy to $namewant" + return 1 + fi + + ip link show "$devdummy" | grep -q "alias $namewant" + check_err $? + + if [ -r "$syspathname" ] ; then + read namehave < "$syspathname" + if [ "$namewant" != "$namehave" ]; then + echo "FAIL: did set ifalias $namewant but got $namehave" + return 1 + fi + + namewant=$(uuidgen) + echo "$namewant" > "$syspathname" + ip link show "$devdummy" | grep -q "alias $namewant" + check_err $? + + # sysfs interface allows to delete alias again + echo "" > "$syspathname" + + ip link show "$devdummy" | grep -q "alias $namewant" + check_fail $? + + for i in $(seq 1 100); do + uuidgen > "$syspathname" & + done + + wait + + # re-add the alias -- kernel should free mem when dummy dev is removed + ip link set dev "$devdummy" alias "$namewant" + check_err $? + fi + + if [ $ret -ne 0 ]; then + echo "FAIL: set interface alias $devdummy to $namewant" + return 1 + fi + + echo "PASS: set ifalias $namewant for $devdummy" +} + +kci_test_vrf() +{ + vrfname="test-vrf" + ret=0 + + ip link show type vrf 2>/dev/null + if [ $? -ne 0 ]; then + echo "SKIP: vrf: iproute2 too old" + return $ksft_skip + fi + + ip link add "$vrfname" type vrf table 10 + check_err $? + if [ $ret -ne 0 ];then + echo "FAIL: can't add vrf interface, skipping test" + return 0 + fi + + ip -br link show type vrf | grep -q "$vrfname" + check_err $? + if [ $ret -ne 0 ];then + echo "FAIL: created vrf device not found" + return 1 + fi + + ip link set dev "$vrfname" up + check_err $? + + ip link set dev "$devdummy" master "$vrfname" + check_err $? + ip link del dev "$vrfname" + check_err $? + + if [ $ret -ne 0 ];then + echo "FAIL: vrf" + return 1 + fi + + echo "PASS: vrf" +} + +kci_test_encap_vxlan() +{ + ret=0 + vxlan="test-vxlan0" + vlan="test-vlan0" + testns="$1" + + ip netns exec "$testns" ip link add "$vxlan" type vxlan id 42 group 239.1.1.1 \ + dev "$devdummy" dstport 4789 2>/dev/null + if [ $? -ne 0 ]; then + echo "FAIL: can't add vxlan interface, skipping test" + return 0 + fi + check_err $? + + ip netns exec "$testns" ip addr add 10.2.11.49/24 dev "$vxlan" + check_err $? + + ip netns exec "$testns" ip link set up dev "$vxlan" + check_err $? + + ip netns exec "$testns" ip link add link "$vxlan" name "$vlan" type vlan id 1 + check_err $? + + ip netns exec "$testns" ip link del "$vxlan" + check_err $? + + if [ $ret -ne 0 ]; then + echo "FAIL: vxlan" + return 1 + fi + echo "PASS: vxlan" +} + +kci_test_encap_fou() +{ + ret=0 + name="test-fou" + testns="$1" + + ip fou help 2>&1 |grep -q 'Usage: ip fou' + if [ $? -ne 0 ];then + echo "SKIP: fou: iproute2 too old" + return $ksft_skip + fi + + ip netns exec "$testns" ip fou add port 7777 ipproto 47 2>/dev/null + if [ $? -ne 0 ];then + echo "FAIL: can't add fou port 7777, skipping test" + return 1 + fi + + ip netns exec "$testns" ip fou add port 8888 ipproto 4 + check_err $? + + ip netns exec "$testns" ip fou del port 9999 2>/dev/null + check_fail $? + + ip netns exec "$testns" ip fou del port 7777 + check_err $? + + if [ $ret -ne 0 ]; then + echo "FAIL: fou" + return 1 + fi + + echo "PASS: fou" +} + +# test various encap methods, use netns to avoid unwanted interference +kci_test_encap() +{ + testns="testns" + ret=0 + + ip netns add "$testns" + if [ $? -ne 0 ]; then + echo "SKIP encap tests: cannot add net namespace $testns" + return $ksft_skip + fi + + ip netns exec "$testns" ip link set lo up + check_err $? + + ip netns exec "$testns" ip link add name "$devdummy" type dummy + check_err $? + ip netns exec "$testns" ip link set "$devdummy" up + check_err $? + + kci_test_encap_vxlan "$testns" + kci_test_encap_fou "$testns" + + ip netns del "$testns" +} + +kci_test_macsec() +{ + msname="test_macsec0" + ret=0 + + ip macsec help 2>&1 | grep -q "^Usage: ip macsec" + if [ $? -ne 0 ]; then + echo "SKIP: macsec: iproute2 too old" + return $ksft_skip + fi + + ip link add link "$devdummy" "$msname" type macsec port 42 encrypt on + check_err $? + if [ $ret -ne 0 ];then + echo "FAIL: can't add macsec interface, skipping test" + return 1 + fi + + ip macsec add "$msname" tx sa 0 pn 1024 on key 01 12345678901234567890123456789012 + check_err $? + + ip macsec add "$msname" rx port 1234 address "1c:ed:de:ad:be:ef" + check_err $? + + ip macsec add "$msname" rx port 1234 address "1c:ed:de:ad:be:ef" sa 0 pn 1 on key 00 0123456789abcdef0123456789abcdef + check_err $? + + ip macsec show > /dev/null + check_err $? + + ip link del dev "$msname" + check_err $? + + if [ $ret -ne 0 ];then + echo "FAIL: macsec" + return 1 + fi + + echo "PASS: macsec" +} + +#------------------------------------------------------------------- +# Example commands +# ip x s add proto esp src 14.0.0.52 dst 14.0.0.70 \ +# spi 0x07 mode transport reqid 0x07 replay-window 32 \ +# aead 'rfc4106(gcm(aes))' 1234567890123456dcba 128 \ +# sel src 14.0.0.52/24 dst 14.0.0.70/24 +# ip x p add dir out src 14.0.0.52/24 dst 14.0.0.70/24 \ +# tmpl proto esp src 14.0.0.52 dst 14.0.0.70 \ +# spi 0x07 mode transport reqid 0x07 +# +# Subcommands not tested +# ip x s update +# ip x s allocspi +# ip x s deleteall +# ip x p update +# ip x p deleteall +# ip x p set +#------------------------------------------------------------------- +kci_test_ipsec() +{ + ret=0 + algo="aead rfc4106(gcm(aes)) 0x3132333435363738393031323334353664636261 128" + srcip=192.168.123.1 + dstip=192.168.123.2 + spi=7 + + ip addr add $srcip dev $devdummy + + # flush to be sure there's nothing configured + ip x s flush ; ip x p flush + check_err $? + + # start the monitor in the background + tmpfile=`mktemp /var/run/ipsectestXXX` + mpid=`(ip x m > $tmpfile & echo $!) 2>/dev/null` + sleep 0.2 + + ipsecid="proto esp src $srcip dst $dstip spi 0x07" + ip x s add $ipsecid \ + mode transport reqid 0x07 replay-window 32 \ + $algo sel src $srcip/24 dst $dstip/24 + check_err $? + + lines=`ip x s list | grep $srcip | grep $dstip | wc -l` + test $lines -eq 2 + check_err $? + + ip x s count | grep -q "SAD count 1" + check_err $? + + lines=`ip x s get $ipsecid | grep $srcip | grep $dstip | wc -l` + test $lines -eq 2 + check_err $? + + ip x s delete $ipsecid + check_err $? + + lines=`ip x s list | wc -l` + test $lines -eq 0 + check_err $? + + ipsecsel="dir out src $srcip/24 dst $dstip/24" + ip x p add $ipsecsel \ + tmpl proto esp src $srcip dst $dstip \ + spi 0x07 mode transport reqid 0x07 + check_err $? + + lines=`ip x p list | grep $srcip | grep $dstip | wc -l` + test $lines -eq 2 + check_err $? + + ip x p count | grep -q "SPD IN 0 OUT 1 FWD 0" + check_err $? + + lines=`ip x p get $ipsecsel | grep $srcip | grep $dstip | wc -l` + test $lines -eq 2 + check_err $? + + ip x p delete $ipsecsel + check_err $? + + lines=`ip x p list | wc -l` + test $lines -eq 0 + check_err $? + + # check the monitor results + kill $mpid + lines=`wc -l $tmpfile | cut "-d " -f1` + test $lines -eq 20 + check_err $? + rm -rf $tmpfile + + # clean up any leftovers + ip x s flush + check_err $? + ip x p flush + check_err $? + ip addr del $srcip/32 dev $devdummy + + if [ $ret -ne 0 ]; then + echo "FAIL: ipsec" + return 1 + fi + echo "PASS: ipsec" +} + +#------------------------------------------------------------------- +# Example commands +# ip x s add proto esp src 14.0.0.52 dst 14.0.0.70 \ +# spi 0x07 mode transport reqid 0x07 replay-window 32 \ +# aead 'rfc4106(gcm(aes))' 1234567890123456dcba 128 \ +# sel src 14.0.0.52/24 dst 14.0.0.70/24 +# offload dev sim1 dir out +# ip x p add dir out src 14.0.0.52/24 dst 14.0.0.70/24 \ +# tmpl proto esp src 14.0.0.52 dst 14.0.0.70 \ +# spi 0x07 mode transport reqid 0x07 +# +#------------------------------------------------------------------- +kci_test_ipsec_offload() +{ + ret=0 + algo="aead rfc4106(gcm(aes)) 0x3132333435363738393031323334353664636261 128" + srcip=192.168.123.3 + dstip=192.168.123.4 + dev=simx1 + sysfsd=/sys/kernel/debug/netdevsim/$dev + sysfsf=$sysfsd/ipsec + + # setup netdevsim since dummydev doesn't have offload support + modprobe netdevsim + check_err $? + if [ $ret -ne 0 ]; then + echo "FAIL: ipsec_offload can't load netdevsim" + return 1 + fi + + ip link add $dev type netdevsim + ip addr add $srcip dev $dev + ip link set $dev up + if [ ! -d $sysfsd ] ; then + echo "FAIL: ipsec_offload can't create device $dev" + return 1 + fi + if [ ! -f $sysfsf ] ; then + echo "FAIL: ipsec_offload netdevsim doesn't support IPsec offload" + return 1 + fi + + # flush to be sure there's nothing configured + ip x s flush ; ip x p flush + + # create offloaded SAs, both in and out + ip x p add dir out src $srcip/24 dst $dstip/24 \ + tmpl proto esp src $srcip dst $dstip spi 9 \ + mode transport reqid 42 + check_err $? + ip x p add dir out src $dstip/24 dst $srcip/24 \ + tmpl proto esp src $dstip dst $srcip spi 9 \ + mode transport reqid 42 + check_err $? + + ip x s add proto esp src $srcip dst $dstip spi 9 \ + mode transport reqid 42 $algo sel src $srcip/24 dst $dstip/24 \ + offload dev $dev dir out + check_err $? + ip x s add proto esp src $dstip dst $srcip spi 9 \ + mode transport reqid 42 $algo sel src $dstip/24 dst $srcip/24 \ + offload dev $dev dir in + check_err $? + if [ $ret -ne 0 ]; then + echo "FAIL: ipsec_offload can't create SA" + return 1 + fi + + # does offload show up in ip output + lines=`ip x s list | grep -c "crypto offload parameters: dev $dev dir"` + if [ $lines -ne 2 ] ; then + echo "FAIL: ipsec_offload SA offload missing from list output" + check_err 1 + fi + + # use ping to exercise the Tx path + ping -I $dev -c 3 -W 1 -i 0 $dstip >/dev/null + + # does driver have correct offload info + diff $sysfsf - << EOF +SA count=2 tx=3 +sa[0] tx ipaddr=0x00000000 00000000 00000000 00000000 +sa[0] spi=0x00000009 proto=0x32 salt=0x61626364 crypt=1 +sa[0] key=0x34333231 38373635 32313039 36353433 +sa[1] rx ipaddr=0x00000000 00000000 00000000 037ba8c0 +sa[1] spi=0x00000009 proto=0x32 salt=0x61626364 crypt=1 +sa[1] key=0x34333231 38373635 32313039 36353433 +EOF + if [ $? -ne 0 ] ; then + echo "FAIL: ipsec_offload incorrect driver data" + check_err 1 + fi + + # does offload get removed from driver + ip x s flush + ip x p flush + lines=`grep -c "SA count=0" $sysfsf` + if [ $lines -ne 1 ] ; then + echo "FAIL: ipsec_offload SA not removed from driver" + check_err 1 + fi + + # clean up any leftovers + ip link del $dev + rmmod netdevsim + + if [ $ret -ne 0 ]; then + echo "FAIL: ipsec_offload" + return 1 + fi + echo "PASS: ipsec_offload" +} + +kci_test_gretap() +{ + testns="testns" + DEV_NS=gretap00 + ret=0 + + ip netns add "$testns" + if [ $? -ne 0 ]; then + echo "SKIP gretap tests: cannot add net namespace $testns" + return $ksft_skip + fi + + ip link help gretap 2>&1 | grep -q "^Usage:" + if [ $? -ne 0 ];then + echo "SKIP: gretap: iproute2 too old" + ip netns del "$testns" + return $ksft_skip + fi + + # test native tunnel + ip netns exec "$testns" ip link add dev "$DEV_NS" type gretap seq \ + key 102 local 172.16.1.100 remote 172.16.1.200 + check_err $? + + ip netns exec "$testns" ip addr add dev "$DEV_NS" 10.1.1.100/24 + check_err $? + + ip netns exec "$testns" ip link set dev $DEV_NS up + check_err $? + + ip netns exec "$testns" ip link del "$DEV_NS" + check_err $? + + # test external mode + ip netns exec "$testns" ip link add dev "$DEV_NS" type gretap external + check_err $? + + ip netns exec "$testns" ip link del "$DEV_NS" + check_err $? + + if [ $ret -ne 0 ]; then + echo "FAIL: gretap" + ip netns del "$testns" + return 1 + fi + echo "PASS: gretap" + + ip netns del "$testns" +} + +kci_test_ip6gretap() +{ + testns="testns" + DEV_NS=ip6gretap00 + ret=0 + + ip netns add "$testns" + if [ $? -ne 0 ]; then + echo "SKIP ip6gretap tests: cannot add net namespace $testns" + return $ksft_skip + fi + + ip link help ip6gretap 2>&1 | grep -q "^Usage:" + if [ $? -ne 0 ];then + echo "SKIP: ip6gretap: iproute2 too old" + ip netns del "$testns" + return $ksft_skip + fi + + # test native tunnel + ip netns exec "$testns" ip link add dev "$DEV_NS" type ip6gretap seq \ + key 102 local fc00:100::1 remote fc00:100::2 + check_err $? + + ip netns exec "$testns" ip addr add dev "$DEV_NS" fc00:200::1/96 + check_err $? + + ip netns exec "$testns" ip link set dev $DEV_NS up + check_err $? + + ip netns exec "$testns" ip link del "$DEV_NS" + check_err $? + + # test external mode + ip netns exec "$testns" ip link add dev "$DEV_NS" type ip6gretap external + check_err $? + + ip netns exec "$testns" ip link del "$DEV_NS" + check_err $? + + if [ $ret -ne 0 ]; then + echo "FAIL: ip6gretap" + ip netns del "$testns" + return 1 + fi + echo "PASS: ip6gretap" + + ip netns del "$testns" +} + +kci_test_erspan() +{ + testns="testns" + DEV_NS=erspan00 + ret=0 + + ip link help erspan 2>&1 | grep -q "^Usage:" + if [ $? -ne 0 ];then + echo "SKIP: erspan: iproute2 too old" + return $ksft_skip + fi + + ip netns add "$testns" + if [ $? -ne 0 ]; then + echo "SKIP erspan tests: cannot add net namespace $testns" + return $ksft_skip + fi + + # test native tunnel erspan v1 + ip netns exec "$testns" ip link add dev "$DEV_NS" type erspan seq \ + key 102 local 172.16.1.100 remote 172.16.1.200 \ + erspan_ver 1 erspan 488 + check_err $? + + ip netns exec "$testns" ip addr add dev "$DEV_NS" 10.1.1.100/24 + check_err $? + + ip netns exec "$testns" ip link set dev $DEV_NS up + check_err $? + + ip netns exec "$testns" ip link del "$DEV_NS" + check_err $? + + # test native tunnel erspan v2 + ip netns exec "$testns" ip link add dev "$DEV_NS" type erspan seq \ + key 102 local 172.16.1.100 remote 172.16.1.200 \ + erspan_ver 2 erspan_dir ingress erspan_hwid 7 + check_err $? + + ip netns exec "$testns" ip addr add dev "$DEV_NS" 10.1.1.100/24 + check_err $? + + ip netns exec "$testns" ip link set dev $DEV_NS up + check_err $? + + ip netns exec "$testns" ip link del "$DEV_NS" + check_err $? + + # test external mode + ip netns exec "$testns" ip link add dev "$DEV_NS" type erspan external + check_err $? + + ip netns exec "$testns" ip link del "$DEV_NS" + check_err $? + + if [ $ret -ne 0 ]; then + echo "FAIL: erspan" + ip netns del "$testns" + return 1 + fi + echo "PASS: erspan" + + ip netns del "$testns" +} + +kci_test_ip6erspan() +{ + testns="testns" + DEV_NS=ip6erspan00 + ret=0 + + ip link help ip6erspan 2>&1 | grep -q "^Usage:" + if [ $? -ne 0 ];then + echo "SKIP: ip6erspan: iproute2 too old" + return $ksft_skip + fi + + ip netns add "$testns" + if [ $? -ne 0 ]; then + echo "SKIP ip6erspan tests: cannot add net namespace $testns" + return $ksft_skip + fi + + # test native tunnel ip6erspan v1 + ip netns exec "$testns" ip link add dev "$DEV_NS" type ip6erspan seq \ + key 102 local fc00:100::1 remote fc00:100::2 \ + erspan_ver 1 erspan 488 + check_err $? + + ip netns exec "$testns" ip addr add dev "$DEV_NS" 10.1.1.100/24 + check_err $? + + ip netns exec "$testns" ip link set dev $DEV_NS up + check_err $? + + ip netns exec "$testns" ip link del "$DEV_NS" + check_err $? + + # test native tunnel ip6erspan v2 + ip netns exec "$testns" ip link add dev "$DEV_NS" type ip6erspan seq \ + key 102 local fc00:100::1 remote fc00:100::2 \ + erspan_ver 2 erspan_dir ingress erspan_hwid 7 + check_err $? + + ip netns exec "$testns" ip addr add dev "$DEV_NS" 10.1.1.100/24 + check_err $? + + ip netns exec "$testns" ip link set dev $DEV_NS up + check_err $? + + ip netns exec "$testns" ip link del "$DEV_NS" + check_err $? + + # test external mode + ip netns exec "$testns" ip link add dev "$DEV_NS" \ + type ip6erspan external + check_err $? + + ip netns exec "$testns" ip link del "$DEV_NS" + check_err $? + + if [ $ret -ne 0 ]; then + echo "FAIL: ip6erspan" + ip netns del "$testns" + return 1 + fi + echo "PASS: ip6erspan" + + ip netns del "$testns" +} + +kci_test_rtnl() +{ + kci_add_dummy + if [ $ret -ne 0 ];then + echo "FAIL: cannot add dummy interface" + return 1 + fi + + kci_test_polrouting + kci_test_route_get + kci_test_addrlft + kci_test_tc + kci_test_gre + kci_test_gretap + kci_test_ip6gretap + kci_test_erspan + kci_test_ip6erspan + kci_test_bridge + kci_test_addrlabel + kci_test_ifalias + kci_test_vrf + kci_test_encap + kci_test_macsec + kci_test_ipsec + kci_test_ipsec_offload + + kci_del_dummy +} + +#check for needed privileges +if [ "$(id -u)" -ne 0 ];then + echo "SKIP: Need root privileges" + exit $ksft_skip +fi + +for x in ip tc;do + $x -Version 2>/dev/null >/dev/null + if [ $? -ne 0 ];then + echo "SKIP: Could not run test without the $x tool" + exit $ksft_skip + fi +done + +kci_test_rtnl + +exit $ret diff --git a/tools/testing/selftests/net/run_afpackettests b/tools/testing/selftests/net/run_afpackettests new file mode 100755 index 000000000..bea079edc --- /dev/null +++ b/tools/testing/selftests/net/run_afpackettests @@ -0,0 +1,27 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 + +if [ $(id -u) != 0 ]; then + echo $msg must be run as root >&2 + exit 0 +fi + +echo "--------------------" +echo "running psock_fanout test" +echo "--------------------" +./in_netns.sh ./psock_fanout +if [ $? -ne 0 ]; then + echo "[FAIL]" +else + echo "[PASS]" +fi + +echo "--------------------" +echo "running psock_tpacket test" +echo "--------------------" +./in_netns.sh ./psock_tpacket +if [ $? -ne 0 ]; then + echo "[FAIL]" +else + echo "[PASS]" +fi diff --git a/tools/testing/selftests/net/run_netsocktests b/tools/testing/selftests/net/run_netsocktests new file mode 100755 index 000000000..14e41faf2 --- /dev/null +++ b/tools/testing/selftests/net/run_netsocktests @@ -0,0 +1,13 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 + +echo "--------------------" +echo "running socket test" +echo "--------------------" +./socket +if [ $? -ne 0 ]; then + echo "[FAIL]" + exit 1 +else + echo "[PASS]" +fi diff --git a/tools/testing/selftests/net/socket.c b/tools/testing/selftests/net/socket.c new file mode 100644 index 000000000..afca1ead6 --- /dev/null +++ b/tools/testing/selftests/net/socket.c @@ -0,0 +1,93 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <stdio.h> +#include <errno.h> +#include <unistd.h> +#include <string.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> + +struct socket_testcase { + int domain; + int type; + int protocol; + + /* 0 = valid file descriptor + * -foo = error foo + */ + int expect; + + /* If non-zero, accept EAFNOSUPPORT to handle the case + * of the protocol not being configured into the kernel. + */ + int nosupport_ok; +}; + +static struct socket_testcase tests[] = { + { AF_MAX, 0, 0, -EAFNOSUPPORT, 0 }, + { AF_INET, SOCK_STREAM, IPPROTO_TCP, 0, 1 }, + { AF_INET, SOCK_DGRAM, IPPROTO_TCP, -EPROTONOSUPPORT, 1 }, + { AF_INET, SOCK_DGRAM, IPPROTO_UDP, 0, 1 }, + { AF_INET, SOCK_STREAM, IPPROTO_UDP, -EPROTONOSUPPORT, 1 }, +}; + +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) +#define ERR_STRING_SZ 64 + +static int run_tests(void) +{ + char err_string1[ERR_STRING_SZ]; + char err_string2[ERR_STRING_SZ]; + int i, err; + + err = 0; + for (i = 0; i < ARRAY_SIZE(tests); i++) { + struct socket_testcase *s = &tests[i]; + int fd; + + fd = socket(s->domain, s->type, s->protocol); + if (fd < 0) { + if (s->nosupport_ok && + errno == EAFNOSUPPORT) + continue; + + if (s->expect < 0 && + errno == -s->expect) + continue; + + strerror_r(-s->expect, err_string1, ERR_STRING_SZ); + strerror_r(errno, err_string2, ERR_STRING_SZ); + + fprintf(stderr, "socket(%d, %d, %d) expected " + "err (%s) got (%s)\n", + s->domain, s->type, s->protocol, + err_string1, err_string2); + + err = -1; + break; + } else { + close(fd); + + if (s->expect < 0) { + strerror_r(errno, err_string1, ERR_STRING_SZ); + + fprintf(stderr, "socket(%d, %d, %d) expected " + "success got err (%s)\n", + s->domain, s->type, s->protocol, + err_string1); + + err = -1; + break; + } + } + } + + return err; +} + +int main(void) +{ + int err = run_tests(); + + return err; +} diff --git a/tools/testing/selftests/net/tcp_inq.c b/tools/testing/selftests/net/tcp_inq.c new file mode 100644 index 000000000..d044b29dd --- /dev/null +++ b/tools/testing/selftests/net/tcp_inq.c @@ -0,0 +1,189 @@ +/* + * Copyright 2018 Google Inc. + * Author: Soheil Hassas Yeganeh (soheil@google.com) + * + * Simple example on how to use TCP_INQ and TCP_CM_INQ. + * + * License (GPLv2): + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for + * more details. + */ +#define _GNU_SOURCE + +#include <error.h> +#include <netinet/in.h> +#include <netinet/tcp.h> +#include <pthread.h> +#include <stdio.h> +#include <errno.h> +#include <stdlib.h> +#include <string.h> +#include <sys/socket.h> +#include <unistd.h> + +#ifndef TCP_INQ +#define TCP_INQ 36 +#endif + +#ifndef TCP_CM_INQ +#define TCP_CM_INQ TCP_INQ +#endif + +#define BUF_SIZE 8192 +#define CMSG_SIZE 32 + +static int family = AF_INET6; +static socklen_t addr_len = sizeof(struct sockaddr_in6); +static int port = 4974; + +static void setup_loopback_addr(int family, struct sockaddr_storage *sockaddr) +{ + struct sockaddr_in6 *addr6 = (void *) sockaddr; + struct sockaddr_in *addr4 = (void *) sockaddr; + + switch (family) { + case PF_INET: + memset(addr4, 0, sizeof(*addr4)); + addr4->sin_family = AF_INET; + addr4->sin_addr.s_addr = htonl(INADDR_LOOPBACK); + addr4->sin_port = htons(port); + break; + case PF_INET6: + memset(addr6, 0, sizeof(*addr6)); + addr6->sin6_family = AF_INET6; + addr6->sin6_addr = in6addr_loopback; + addr6->sin6_port = htons(port); + break; + default: + error(1, 0, "illegal family"); + } +} + +void *start_server(void *arg) +{ + int server_fd = (int)(unsigned long)arg; + struct sockaddr_in addr; + socklen_t addrlen = sizeof(addr); + char *buf; + int fd; + int r; + + buf = malloc(BUF_SIZE); + + for (;;) { + fd = accept(server_fd, (struct sockaddr *)&addr, &addrlen); + if (fd == -1) { + perror("accept"); + break; + } + do { + r = send(fd, buf, BUF_SIZE, 0); + } while (r < 0 && errno == EINTR); + if (r < 0) + perror("send"); + if (r != BUF_SIZE) + fprintf(stderr, "can only send %d bytes\n", r); + /* TCP_INQ can overestimate in-queue by one byte if we send + * the FIN packet. Sleep for 1 second, so that the client + * likely invoked recvmsg(). + */ + sleep(1); + close(fd); + } + + free(buf); + close(server_fd); + pthread_exit(0); +} + +int main(int argc, char *argv[]) +{ + struct sockaddr_storage listen_addr, addr; + int c, one = 1, inq = -1; + pthread_t server_thread; + char cmsgbuf[CMSG_SIZE]; + struct iovec iov[1]; + struct cmsghdr *cm; + struct msghdr msg; + int server_fd, fd; + char *buf; + + while ((c = getopt(argc, argv, "46p:")) != -1) { + switch (c) { + case '4': + family = PF_INET; + addr_len = sizeof(struct sockaddr_in); + break; + case '6': + family = PF_INET6; + addr_len = sizeof(struct sockaddr_in6); + break; + case 'p': + port = atoi(optarg); + break; + } + } + + server_fd = socket(family, SOCK_STREAM, 0); + if (server_fd < 0) + error(1, errno, "server socket"); + setup_loopback_addr(family, &listen_addr); + if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR, + &one, sizeof(one)) != 0) + error(1, errno, "setsockopt(SO_REUSEADDR)"); + if (bind(server_fd, (const struct sockaddr *)&listen_addr, + addr_len) == -1) + error(1, errno, "bind"); + if (listen(server_fd, 128) == -1) + error(1, errno, "listen"); + if (pthread_create(&server_thread, NULL, start_server, + (void *)(unsigned long)server_fd) != 0) + error(1, errno, "pthread_create"); + + fd = socket(family, SOCK_STREAM, 0); + if (fd < 0) + error(1, errno, "client socket"); + setup_loopback_addr(family, &addr); + if (connect(fd, (const struct sockaddr *)&addr, addr_len) == -1) + error(1, errno, "connect"); + if (setsockopt(fd, SOL_TCP, TCP_INQ, &one, sizeof(one)) != 0) + error(1, errno, "setsockopt(TCP_INQ)"); + + msg.msg_name = NULL; + msg.msg_namelen = 0; + msg.msg_iov = iov; + msg.msg_iovlen = 1; + msg.msg_control = cmsgbuf; + msg.msg_controllen = sizeof(cmsgbuf); + msg.msg_flags = 0; + + buf = malloc(BUF_SIZE); + iov[0].iov_base = buf; + iov[0].iov_len = BUF_SIZE / 2; + + if (recvmsg(fd, &msg, 0) != iov[0].iov_len) + error(1, errno, "recvmsg"); + if (msg.msg_flags & MSG_CTRUNC) + error(1, 0, "control message is truncated"); + + for (cm = CMSG_FIRSTHDR(&msg); cm; cm = CMSG_NXTHDR(&msg, cm)) + if (cm->cmsg_level == SOL_TCP && cm->cmsg_type == TCP_CM_INQ) + inq = *((int *) CMSG_DATA(cm)); + + if (inq != BUF_SIZE - iov[0].iov_len) { + fprintf(stderr, "unexpected inq: %d\n", inq); + exit(1); + } + + printf("PASSED\n"); + free(buf); + close(fd); + return 0; +} diff --git a/tools/testing/selftests/net/tcp_mmap.c b/tools/testing/selftests/net/tcp_mmap.c new file mode 100644 index 000000000..e8c5dff44 --- /dev/null +++ b/tools/testing/selftests/net/tcp_mmap.c @@ -0,0 +1,447 @@ +/* + * Copyright 2018 Google Inc. + * Author: Eric Dumazet (edumazet@google.com) + * + * Reference program demonstrating tcp mmap() usage, + * and SO_RCVLOWAT hints for receiver. + * + * Note : NIC with header split is needed to use mmap() on TCP : + * Each incoming frame must be a multiple of PAGE_SIZE bytes of TCP payload. + * + * How to use on loopback interface : + * + * ifconfig lo mtu 61512 # 15*4096 + 40 (ipv6 header) + 32 (TCP with TS option header) + * tcp_mmap -s -z & + * tcp_mmap -H ::1 -z + * + * Or leave default lo mtu, but use -M option to set TCP_MAXSEG option to (4096 + 12) + * (4096 : page size on x86, 12: TCP TS option length) + * tcp_mmap -s -z -M $((4096+12)) & + * tcp_mmap -H ::1 -z -M $((4096+12)) + * + * Note: -z option on sender uses MSG_ZEROCOPY, which forces a copy when packets go through loopback interface. + * We might use sendfile() instead, but really this test program is about mmap(), for receivers ;) + * + * $ ./tcp_mmap -s & # Without mmap() + * $ for i in {1..4}; do ./tcp_mmap -H ::1 -z ; done + * received 32768 MB (0 % mmap'ed) in 14.1157 s, 19.4732 Gbit + * cpu usage user:0.057 sys:7.815, 240.234 usec per MB, 65531 c-switches + * received 32768 MB (0 % mmap'ed) in 14.6833 s, 18.7204 Gbit + * cpu usage user:0.043 sys:8.103, 248.596 usec per MB, 65524 c-switches + * received 32768 MB (0 % mmap'ed) in 11.143 s, 24.6682 Gbit + * cpu usage user:0.044 sys:6.576, 202.026 usec per MB, 65519 c-switches + * received 32768 MB (0 % mmap'ed) in 14.9056 s, 18.4413 Gbit + * cpu usage user:0.036 sys:8.193, 251.129 usec per MB, 65530 c-switches + * $ kill %1 # kill tcp_mmap server + * + * $ ./tcp_mmap -s -z & # With mmap() + * $ for i in {1..4}; do ./tcp_mmap -H ::1 -z ; done + * received 32768 MB (99.9939 % mmap'ed) in 6.73792 s, 40.7956 Gbit + * cpu usage user:0.045 sys:2.827, 87.6465 usec per MB, 65532 c-switches + * received 32768 MB (99.9939 % mmap'ed) in 7.26732 s, 37.8238 Gbit + * cpu usage user:0.037 sys:3.087, 95.3369 usec per MB, 65532 c-switches + * received 32768 MB (99.9939 % mmap'ed) in 7.61661 s, 36.0893 Gbit + * cpu usage user:0.046 sys:3.559, 110.016 usec per MB, 65529 c-switches + * received 32768 MB (99.9939 % mmap'ed) in 7.43764 s, 36.9577 Gbit + * cpu usage user:0.035 sys:3.467, 106.873 usec per MB, 65530 c-switches + * + * License (GPLv2): + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + */ +#define _GNU_SOURCE +#include <pthread.h> +#include <sys/types.h> +#include <fcntl.h> +#include <error.h> +#include <sys/socket.h> +#include <sys/mman.h> +#include <sys/resource.h> +#include <unistd.h> +#include <string.h> +#include <stdlib.h> +#include <stdio.h> +#include <errno.h> +#include <time.h> +#include <sys/time.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <poll.h> +#include <linux/tcp.h> +#include <assert.h> + +#ifndef MSG_ZEROCOPY +#define MSG_ZEROCOPY 0x4000000 +#endif + +#define FILE_SZ (1UL << 35) +static int cfg_family = AF_INET6; +static socklen_t cfg_alen = sizeof(struct sockaddr_in6); +static int cfg_port = 8787; + +static int rcvbuf; /* Default: autotuning. Can be set with -r <integer> option */ +static int sndbuf; /* Default: autotuning. Can be set with -w <integer> option */ +static int zflg; /* zero copy option. (MSG_ZEROCOPY for sender, mmap() for receiver */ +static int xflg; /* hash received data (simple xor) (-h option) */ +static int keepflag; /* -k option: receiver shall keep all received file in memory (no munmap() calls) */ + +static int chunk_size = 512*1024; + +unsigned long htotal; + +static inline void prefetch(const void *x) +{ +#if defined(__x86_64__) + asm volatile("prefetcht0 %P0" : : "m" (*(const char *)x)); +#endif +} + +void hash_zone(void *zone, unsigned int length) +{ + unsigned long temp = htotal; + + while (length >= 8*sizeof(long)) { + prefetch(zone + 384); + temp ^= *(unsigned long *)zone; + temp ^= *(unsigned long *)(zone + sizeof(long)); + temp ^= *(unsigned long *)(zone + 2*sizeof(long)); + temp ^= *(unsigned long *)(zone + 3*sizeof(long)); + temp ^= *(unsigned long *)(zone + 4*sizeof(long)); + temp ^= *(unsigned long *)(zone + 5*sizeof(long)); + temp ^= *(unsigned long *)(zone + 6*sizeof(long)); + temp ^= *(unsigned long *)(zone + 7*sizeof(long)); + zone += 8*sizeof(long); + length -= 8*sizeof(long); + } + while (length >= 1) { + temp ^= *(unsigned char *)zone; + zone += 1; + length--; + } + htotal = temp; +} + +void *child_thread(void *arg) +{ + unsigned long total_mmap = 0, total = 0; + struct tcp_zerocopy_receive zc; + unsigned long delta_usec; + int flags = MAP_SHARED; + struct timeval t0, t1; + char *buffer = NULL; + void *addr = NULL; + double throughput; + struct rusage ru; + int lu, fd; + + fd = (int)(unsigned long)arg; + + gettimeofday(&t0, NULL); + + fcntl(fd, F_SETFL, O_NDELAY); + buffer = malloc(chunk_size); + if (!buffer) { + perror("malloc"); + goto error; + } + if (zflg) { + addr = mmap(NULL, chunk_size, PROT_READ, flags, fd, 0); + if (addr == (void *)-1) + zflg = 0; + } + while (1) { + struct pollfd pfd = { .fd = fd, .events = POLLIN, }; + int sub; + + poll(&pfd, 1, 10000); + if (zflg) { + socklen_t zc_len = sizeof(zc); + int res; + + zc.address = (__u64)addr; + zc.length = chunk_size; + zc.recv_skip_hint = 0; + res = getsockopt(fd, IPPROTO_TCP, TCP_ZEROCOPY_RECEIVE, + &zc, &zc_len); + if (res == -1) + break; + + if (zc.length) { + assert(zc.length <= chunk_size); + total_mmap += zc.length; + if (xflg) + hash_zone(addr, zc.length); + total += zc.length; + } + if (zc.recv_skip_hint) { + assert(zc.recv_skip_hint <= chunk_size); + lu = read(fd, buffer, zc.recv_skip_hint); + if (lu > 0) { + if (xflg) + hash_zone(buffer, lu); + total += lu; + } + } + continue; + } + sub = 0; + while (sub < chunk_size) { + lu = read(fd, buffer + sub, chunk_size - sub); + if (lu == 0) + goto end; + if (lu < 0) + break; + if (xflg) + hash_zone(buffer + sub, lu); + total += lu; + sub += lu; + } + } +end: + gettimeofday(&t1, NULL); + delta_usec = (t1.tv_sec - t0.tv_sec) * 1000000 + t1.tv_usec - t0.tv_usec; + + throughput = 0; + if (delta_usec) + throughput = total * 8.0 / (double)delta_usec / 1000.0; + getrusage(RUSAGE_THREAD, &ru); + if (total > 1024*1024) { + unsigned long total_usec; + unsigned long mb = total >> 20; + total_usec = 1000000*ru.ru_utime.tv_sec + ru.ru_utime.tv_usec + + 1000000*ru.ru_stime.tv_sec + ru.ru_stime.tv_usec; + printf("received %lg MB (%lg %% mmap'ed) in %lg s, %lg Gbit\n" + " cpu usage user:%lg sys:%lg, %lg usec per MB, %lu c-switches\n", + total / (1024.0 * 1024.0), + 100.0*total_mmap/total, + (double)delta_usec / 1000000.0, + throughput, + (double)ru.ru_utime.tv_sec + (double)ru.ru_utime.tv_usec / 1000000.0, + (double)ru.ru_stime.tv_sec + (double)ru.ru_stime.tv_usec / 1000000.0, + (double)total_usec/mb, + ru.ru_nvcsw); + } +error: + free(buffer); + close(fd); + if (zflg) + munmap(addr, chunk_size); + pthread_exit(0); +} + +static void apply_rcvsnd_buf(int fd) +{ + if (rcvbuf && setsockopt(fd, SOL_SOCKET, + SO_RCVBUF, &rcvbuf, sizeof(rcvbuf)) == -1) { + perror("setsockopt SO_RCVBUF"); + } + + if (sndbuf && setsockopt(fd, SOL_SOCKET, + SO_SNDBUF, &sndbuf, sizeof(sndbuf)) == -1) { + perror("setsockopt SO_SNDBUF"); + } +} + + +static void setup_sockaddr(int domain, const char *str_addr, + struct sockaddr_storage *sockaddr) +{ + struct sockaddr_in6 *addr6 = (void *) sockaddr; + struct sockaddr_in *addr4 = (void *) sockaddr; + + switch (domain) { + case PF_INET: + memset(addr4, 0, sizeof(*addr4)); + addr4->sin_family = AF_INET; + addr4->sin_port = htons(cfg_port); + if (str_addr && + inet_pton(AF_INET, str_addr, &(addr4->sin_addr)) != 1) + error(1, 0, "ipv4 parse error: %s", str_addr); + break; + case PF_INET6: + memset(addr6, 0, sizeof(*addr6)); + addr6->sin6_family = AF_INET6; + addr6->sin6_port = htons(cfg_port); + if (str_addr && + inet_pton(AF_INET6, str_addr, &(addr6->sin6_addr)) != 1) + error(1, 0, "ipv6 parse error: %s", str_addr); + break; + default: + error(1, 0, "illegal domain"); + } +} + +static void do_accept(int fdlisten) +{ + if (setsockopt(fdlisten, SOL_SOCKET, SO_RCVLOWAT, + &chunk_size, sizeof(chunk_size)) == -1) { + perror("setsockopt SO_RCVLOWAT"); + } + + apply_rcvsnd_buf(fdlisten); + + while (1) { + struct sockaddr_in addr; + socklen_t addrlen = sizeof(addr); + pthread_t th; + int fd, res; + + fd = accept(fdlisten, (struct sockaddr *)&addr, &addrlen); + if (fd == -1) { + perror("accept"); + continue; + } + res = pthread_create(&th, NULL, child_thread, + (void *)(unsigned long)fd); + if (res) { + errno = res; + perror("pthread_create"); + close(fd); + } + } +} + +int main(int argc, char *argv[]) +{ + struct sockaddr_storage listenaddr, addr; + unsigned int max_pacing_rate = 0; + unsigned long total = 0; + char *host = NULL; + int fd, c, on = 1; + char *buffer; + int sflg = 0; + int mss = 0; + + while ((c = getopt(argc, argv, "46p:svr:w:H:zxkP:M:")) != -1) { + switch (c) { + case '4': + cfg_family = PF_INET; + cfg_alen = sizeof(struct sockaddr_in); + break; + case '6': + cfg_family = PF_INET6; + cfg_alen = sizeof(struct sockaddr_in6); + break; + case 'p': + cfg_port = atoi(optarg); + break; + case 'H': + host = optarg; + break; + case 's': /* server : listen for incoming connections */ + sflg++; + break; + case 'r': + rcvbuf = atoi(optarg); + break; + case 'w': + sndbuf = atoi(optarg); + break; + case 'z': + zflg = 1; + break; + case 'M': + mss = atoi(optarg); + break; + case 'x': + xflg = 1; + break; + case 'k': + keepflag = 1; + break; + case 'P': + max_pacing_rate = atoi(optarg) ; + break; + default: + exit(1); + } + } + if (sflg) { + int fdlisten = socket(cfg_family, SOCK_STREAM, 0); + + if (fdlisten == -1) { + perror("socket"); + exit(1); + } + apply_rcvsnd_buf(fdlisten); + setsockopt(fdlisten, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)); + + setup_sockaddr(cfg_family, host, &listenaddr); + + if (mss && + setsockopt(fdlisten, IPPROTO_TCP, TCP_MAXSEG, + &mss, sizeof(mss)) == -1) { + perror("setsockopt TCP_MAXSEG"); + exit(1); + } + if (bind(fdlisten, (const struct sockaddr *)&listenaddr, cfg_alen) == -1) { + perror("bind"); + exit(1); + } + if (listen(fdlisten, 128) == -1) { + perror("listen"); + exit(1); + } + do_accept(fdlisten); + } + buffer = mmap(NULL, chunk_size, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + if (buffer == (char *)-1) { + perror("mmap"); + exit(1); + } + + fd = socket(cfg_family, SOCK_STREAM, 0); + if (fd == -1) { + perror("socket"); + exit(1); + } + apply_rcvsnd_buf(fd); + + setup_sockaddr(cfg_family, host, &addr); + + if (mss && + setsockopt(fd, IPPROTO_TCP, TCP_MAXSEG, &mss, sizeof(mss)) == -1) { + perror("setsockopt TCP_MAXSEG"); + exit(1); + } + if (connect(fd, (const struct sockaddr *)&addr, cfg_alen) == -1) { + perror("connect"); + exit(1); + } + if (max_pacing_rate && + setsockopt(fd, SOL_SOCKET, SO_MAX_PACING_RATE, + &max_pacing_rate, sizeof(max_pacing_rate)) == -1) + perror("setsockopt SO_MAX_PACING_RATE"); + + if (zflg && setsockopt(fd, SOL_SOCKET, SO_ZEROCOPY, + &on, sizeof(on)) == -1) { + perror("setsockopt SO_ZEROCOPY, (-z option disabled)"); + zflg = 0; + } + while (total < FILE_SZ) { + long wr = FILE_SZ - total; + + if (wr > chunk_size) + wr = chunk_size; + /* Note : we just want to fill the pipe with 0 bytes */ + wr = send(fd, buffer, wr, zflg ? MSG_ZEROCOPY : 0); + if (wr <= 0) + break; + total += wr; + } + close(fd); + munmap(buffer, chunk_size); + return 0; +} diff --git a/tools/testing/selftests/net/test_bpf.sh b/tools/testing/selftests/net/test_bpf.sh new file mode 100755 index 000000000..65677909c --- /dev/null +++ b/tools/testing/selftests/net/test_bpf.sh @@ -0,0 +1,11 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# Runs bpf test using test_bpf kernel module + +if /sbin/modprobe -q test_bpf ; then + /sbin/modprobe -q -r test_bpf; + echo "test_bpf: ok"; +else + echo "test_bpf: [FAIL]"; + exit 1; +fi diff --git a/tools/testing/selftests/net/tls.c b/tools/testing/selftests/net/tls.c new file mode 100644 index 000000000..7549d39cc --- /dev/null +++ b/tools/testing/selftests/net/tls.c @@ -0,0 +1,741 @@ +// SPDX-License-Identifier: GPL-2.0 + +#define _GNU_SOURCE + +#include <arpa/inet.h> +#include <errno.h> +#include <error.h> +#include <fcntl.h> +#include <poll.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + +#include <linux/tls.h> +#include <linux/tcp.h> +#include <linux/socket.h> + +#include <sys/types.h> +#include <sys/sendfile.h> +#include <sys/socket.h> +#include <sys/stat.h> + +#include "../kselftest_harness.h" + +#define TLS_PAYLOAD_MAX_LEN 16384 +#define SOL_TLS 282 + +FIXTURE(tls) +{ + int fd, cfd; + bool notls; +}; + +FIXTURE_SETUP(tls) +{ + struct tls12_crypto_info_aes_gcm_128 tls12; + struct sockaddr_in addr; + socklen_t len; + int sfd, ret; + + self->notls = false; + len = sizeof(addr); + + memset(&tls12, 0, sizeof(tls12)); + tls12.info.version = TLS_1_2_VERSION; + tls12.info.cipher_type = TLS_CIPHER_AES_GCM_128; + + addr.sin_family = AF_INET; + addr.sin_addr.s_addr = htonl(INADDR_ANY); + addr.sin_port = 0; + + self->fd = socket(AF_INET, SOCK_STREAM, 0); + sfd = socket(AF_INET, SOCK_STREAM, 0); + + ret = bind(sfd, &addr, sizeof(addr)); + ASSERT_EQ(ret, 0); + ret = listen(sfd, 10); + ASSERT_EQ(ret, 0); + + ret = getsockname(sfd, &addr, &len); + ASSERT_EQ(ret, 0); + + ret = connect(self->fd, &addr, sizeof(addr)); + ASSERT_EQ(ret, 0); + + ret = setsockopt(self->fd, IPPROTO_TCP, TCP_ULP, "tls", sizeof("tls")); + if (ret != 0) { + self->notls = true; + printf("Failure setting TCP_ULP, testing without tls\n"); + } + + if (!self->notls) { + ret = setsockopt(self->fd, SOL_TLS, TLS_TX, &tls12, + sizeof(tls12)); + ASSERT_EQ(ret, 0); + } + + self->cfd = accept(sfd, &addr, &len); + ASSERT_GE(self->cfd, 0); + + if (!self->notls) { + ret = setsockopt(self->cfd, IPPROTO_TCP, TCP_ULP, "tls", + sizeof("tls")); + ASSERT_EQ(ret, 0); + + ret = setsockopt(self->cfd, SOL_TLS, TLS_RX, &tls12, + sizeof(tls12)); + ASSERT_EQ(ret, 0); + } + + close(sfd); +} + +FIXTURE_TEARDOWN(tls) +{ + close(self->fd); + close(self->cfd); +} + +TEST_F(tls, sendfile) +{ + int filefd = open("/proc/self/exe", O_RDONLY); + struct stat st; + + EXPECT_GE(filefd, 0); + fstat(filefd, &st); + EXPECT_GE(sendfile(self->fd, filefd, 0, st.st_size), 0); +} + +TEST_F(tls, send_then_sendfile) +{ + int filefd = open("/proc/self/exe", O_RDONLY); + char const *test_str = "test_send"; + int to_send = strlen(test_str) + 1; + char recv_buf[10]; + struct stat st; + char *buf; + + EXPECT_GE(filefd, 0); + fstat(filefd, &st); + buf = (char *)malloc(st.st_size); + + EXPECT_EQ(send(self->fd, test_str, to_send, 0), to_send); + EXPECT_EQ(recv(self->cfd, recv_buf, to_send, 0), to_send); + EXPECT_EQ(memcmp(test_str, recv_buf, to_send), 0); + + EXPECT_GE(sendfile(self->fd, filefd, 0, st.st_size), 0); + EXPECT_EQ(recv(self->cfd, buf, st.st_size, 0), st.st_size); +} + +TEST_F(tls, recv_max) +{ + unsigned int send_len = TLS_PAYLOAD_MAX_LEN; + char recv_mem[TLS_PAYLOAD_MAX_LEN]; + char buf[TLS_PAYLOAD_MAX_LEN]; + + EXPECT_GE(send(self->fd, buf, send_len, 0), 0); + EXPECT_NE(recv(self->cfd, recv_mem, send_len, 0), -1); + EXPECT_EQ(memcmp(buf, recv_mem, send_len), 0); +} + +TEST_F(tls, recv_small) +{ + char const *test_str = "test_read"; + int send_len = 10; + char buf[10]; + + send_len = strlen(test_str) + 1; + EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len); + EXPECT_NE(recv(self->cfd, buf, send_len, 0), -1); + EXPECT_EQ(memcmp(buf, test_str, send_len), 0); +} + +TEST_F(tls, msg_more) +{ + char const *test_str = "test_read"; + int send_len = 10; + char buf[10 * 2]; + + EXPECT_EQ(send(self->fd, test_str, send_len, MSG_MORE), send_len); + EXPECT_EQ(recv(self->cfd, buf, send_len, MSG_DONTWAIT), -1); + EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len); + EXPECT_EQ(recv(self->cfd, buf, send_len * 2, MSG_DONTWAIT), + send_len * 2); + EXPECT_EQ(memcmp(buf, test_str, send_len), 0); +} + +TEST_F(tls, sendmsg_single) +{ + struct msghdr msg; + + char const *test_str = "test_sendmsg"; + size_t send_len = 13; + struct iovec vec; + char buf[13]; + + vec.iov_base = (char *)test_str; + vec.iov_len = send_len; + memset(&msg, 0, sizeof(struct msghdr)); + msg.msg_iov = &vec; + msg.msg_iovlen = 1; + EXPECT_EQ(sendmsg(self->fd, &msg, 0), send_len); + EXPECT_EQ(recv(self->cfd, buf, send_len, 0), send_len); + EXPECT_EQ(memcmp(buf, test_str, send_len), 0); +} + +TEST_F(tls, sendmsg_large) +{ + void *mem = malloc(16384); + size_t send_len = 16384; + size_t sends = 128; + struct msghdr msg; + size_t recvs = 0; + size_t sent = 0; + + memset(&msg, 0, sizeof(struct msghdr)); + while (sent++ < sends) { + struct iovec vec = { (void *)mem, send_len }; + + msg.msg_iov = &vec; + msg.msg_iovlen = 1; + EXPECT_EQ(sendmsg(self->cfd, &msg, 0), send_len); + } + + while (recvs++ < sends) + EXPECT_NE(recv(self->fd, mem, send_len, 0), -1); + + free(mem); +} + +TEST_F(tls, sendmsg_multiple) +{ + char const *test_str = "test_sendmsg_multiple"; + struct iovec vec[5]; + char *test_strs[5]; + struct msghdr msg; + int total_len = 0; + int len_cmp = 0; + int iov_len = 5; + char *buf; + int i; + + memset(&msg, 0, sizeof(struct msghdr)); + for (i = 0; i < iov_len; i++) { + test_strs[i] = (char *)malloc(strlen(test_str) + 1); + snprintf(test_strs[i], strlen(test_str) + 1, "%s", test_str); + vec[i].iov_base = (void *)test_strs[i]; + vec[i].iov_len = strlen(test_strs[i]) + 1; + total_len += vec[i].iov_len; + } + msg.msg_iov = vec; + msg.msg_iovlen = iov_len; + + EXPECT_EQ(sendmsg(self->cfd, &msg, 0), total_len); + buf = malloc(total_len); + EXPECT_NE(recv(self->fd, buf, total_len, 0), -1); + for (i = 0; i < iov_len; i++) { + EXPECT_EQ(memcmp(test_strs[i], buf + len_cmp, + strlen(test_strs[i])), + 0); + len_cmp += strlen(buf + len_cmp) + 1; + } + for (i = 0; i < iov_len; i++) + free(test_strs[i]); + free(buf); +} + +TEST_F(tls, sendmsg_multiple_stress) +{ + char const *test_str = "abcdefghijklmno"; + struct iovec vec[1024]; + char *test_strs[1024]; + int iov_len = 1024; + int total_len = 0; + char buf[1 << 14]; + struct msghdr msg; + int len_cmp = 0; + int i; + + memset(&msg, 0, sizeof(struct msghdr)); + for (i = 0; i < iov_len; i++) { + test_strs[i] = (char *)malloc(strlen(test_str) + 1); + snprintf(test_strs[i], strlen(test_str) + 1, "%s", test_str); + vec[i].iov_base = (void *)test_strs[i]; + vec[i].iov_len = strlen(test_strs[i]) + 1; + total_len += vec[i].iov_len; + } + msg.msg_iov = vec; + msg.msg_iovlen = iov_len; + + EXPECT_EQ(sendmsg(self->fd, &msg, 0), total_len); + EXPECT_NE(recv(self->cfd, buf, total_len, 0), -1); + + for (i = 0; i < iov_len; i++) + len_cmp += strlen(buf + len_cmp) + 1; + + for (i = 0; i < iov_len; i++) + free(test_strs[i]); +} + +TEST_F(tls, splice_from_pipe) +{ + int send_len = TLS_PAYLOAD_MAX_LEN; + char mem_send[TLS_PAYLOAD_MAX_LEN]; + char mem_recv[TLS_PAYLOAD_MAX_LEN]; + int p[2]; + + ASSERT_GE(pipe(p), 0); + EXPECT_GE(write(p[1], mem_send, send_len), 0); + EXPECT_GE(splice(p[0], NULL, self->fd, NULL, send_len, 0), 0); + EXPECT_EQ(recv(self->cfd, mem_recv, send_len, MSG_WAITALL), send_len); + EXPECT_EQ(memcmp(mem_send, mem_recv, send_len), 0); +} + +TEST_F(tls, splice_from_pipe2) +{ + int send_len = 16000; + char mem_send[16000]; + char mem_recv[16000]; + int p2[2]; + int p[2]; + + ASSERT_GE(pipe(p), 0); + ASSERT_GE(pipe(p2), 0); + EXPECT_GE(write(p[1], mem_send, 8000), 0); + EXPECT_GE(splice(p[0], NULL, self->fd, NULL, 8000, 0), 0); + EXPECT_GE(write(p2[1], mem_send + 8000, 8000), 0); + EXPECT_GE(splice(p2[0], NULL, self->fd, NULL, 8000, 0), 0); + EXPECT_GE(recv(self->cfd, mem_recv, send_len, 0), 0); + EXPECT_EQ(memcmp(mem_send, mem_recv, send_len), 0); +} + +TEST_F(tls, send_and_splice) +{ + int send_len = TLS_PAYLOAD_MAX_LEN; + char mem_send[TLS_PAYLOAD_MAX_LEN]; + char mem_recv[TLS_PAYLOAD_MAX_LEN]; + char const *test_str = "test_read"; + int send_len2 = 10; + char buf[10]; + int p[2]; + + ASSERT_GE(pipe(p), 0); + EXPECT_EQ(send(self->fd, test_str, send_len2, 0), send_len2); + EXPECT_EQ(recv(self->cfd, buf, send_len2, MSG_WAITALL), send_len2); + EXPECT_EQ(memcmp(test_str, buf, send_len2), 0); + + EXPECT_GE(write(p[1], mem_send, send_len), send_len); + EXPECT_GE(splice(p[0], NULL, self->fd, NULL, send_len, 0), send_len); + + EXPECT_EQ(recv(self->cfd, mem_recv, send_len, MSG_WAITALL), send_len); + EXPECT_EQ(memcmp(mem_send, mem_recv, send_len), 0); +} + +TEST_F(tls, splice_to_pipe) +{ + int send_len = TLS_PAYLOAD_MAX_LEN; + char mem_send[TLS_PAYLOAD_MAX_LEN]; + char mem_recv[TLS_PAYLOAD_MAX_LEN]; + int p[2]; + + ASSERT_GE(pipe(p), 0); + EXPECT_GE(send(self->fd, mem_send, send_len, 0), 0); + EXPECT_GE(splice(self->cfd, NULL, p[1], NULL, send_len, 0), 0); + EXPECT_GE(read(p[0], mem_recv, send_len), 0); + EXPECT_EQ(memcmp(mem_send, mem_recv, send_len), 0); +} + +TEST_F(tls, recvmsg_single) +{ + char const *test_str = "test_recvmsg_single"; + int send_len = strlen(test_str) + 1; + char buf[20]; + struct msghdr hdr; + struct iovec vec; + + memset(&hdr, 0, sizeof(hdr)); + EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len); + vec.iov_base = (char *)buf; + vec.iov_len = send_len; + hdr.msg_iovlen = 1; + hdr.msg_iov = &vec; + EXPECT_NE(recvmsg(self->cfd, &hdr, 0), -1); + EXPECT_EQ(memcmp(test_str, buf, send_len), 0); +} + +TEST_F(tls, recvmsg_single_max) +{ + int send_len = TLS_PAYLOAD_MAX_LEN; + char send_mem[TLS_PAYLOAD_MAX_LEN]; + char recv_mem[TLS_PAYLOAD_MAX_LEN]; + struct iovec vec; + struct msghdr hdr; + + EXPECT_EQ(send(self->fd, send_mem, send_len, 0), send_len); + vec.iov_base = (char *)recv_mem; + vec.iov_len = TLS_PAYLOAD_MAX_LEN; + + hdr.msg_iovlen = 1; + hdr.msg_iov = &vec; + EXPECT_NE(recvmsg(self->cfd, &hdr, 0), -1); + EXPECT_EQ(memcmp(send_mem, recv_mem, send_len), 0); +} + +TEST_F(tls, recvmsg_multiple) +{ + unsigned int msg_iovlen = 1024; + unsigned int len_compared = 0; + struct iovec vec[1024]; + char *iov_base[1024]; + unsigned int iov_len = 16; + int send_len = 1 << 14; + char buf[1 << 14]; + struct msghdr hdr; + int i; + + EXPECT_EQ(send(self->fd, buf, send_len, 0), send_len); + for (i = 0; i < msg_iovlen; i++) { + iov_base[i] = (char *)malloc(iov_len); + vec[i].iov_base = iov_base[i]; + vec[i].iov_len = iov_len; + } + + hdr.msg_iovlen = msg_iovlen; + hdr.msg_iov = vec; + EXPECT_NE(recvmsg(self->cfd, &hdr, 0), -1); + for (i = 0; i < msg_iovlen; i++) + len_compared += iov_len; + + for (i = 0; i < msg_iovlen; i++) + free(iov_base[i]); +} + +TEST_F(tls, single_send_multiple_recv) +{ + unsigned int total_len = TLS_PAYLOAD_MAX_LEN * 2; + unsigned int send_len = TLS_PAYLOAD_MAX_LEN; + char send_mem[TLS_PAYLOAD_MAX_LEN * 2]; + char recv_mem[TLS_PAYLOAD_MAX_LEN * 2]; + + EXPECT_GE(send(self->fd, send_mem, total_len, 0), 0); + memset(recv_mem, 0, total_len); + + EXPECT_NE(recv(self->cfd, recv_mem, send_len, 0), -1); + EXPECT_NE(recv(self->cfd, recv_mem + send_len, send_len, 0), -1); + EXPECT_EQ(memcmp(send_mem, recv_mem, total_len), 0); +} + +TEST_F(tls, multiple_send_single_recv) +{ + unsigned int total_len = 2 * 10; + unsigned int send_len = 10; + char recv_mem[2 * 10]; + char send_mem[10]; + + EXPECT_GE(send(self->fd, send_mem, send_len, 0), 0); + EXPECT_GE(send(self->fd, send_mem, send_len, 0), 0); + memset(recv_mem, 0, total_len); + EXPECT_EQ(recv(self->cfd, recv_mem, total_len, 0), total_len); + + EXPECT_EQ(memcmp(send_mem, recv_mem, send_len), 0); + EXPECT_EQ(memcmp(send_mem, recv_mem + send_len, send_len), 0); +} + +TEST_F(tls, recv_partial) +{ + char const *test_str = "test_read_partial"; + char const *test_str_first = "test_read"; + char const *test_str_second = "_partial"; + int send_len = strlen(test_str) + 1; + char recv_mem[18]; + + memset(recv_mem, 0, sizeof(recv_mem)); + EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len); + EXPECT_NE(recv(self->cfd, recv_mem, strlen(test_str_first), 0), -1); + EXPECT_EQ(memcmp(test_str_first, recv_mem, strlen(test_str_first)), 0); + memset(recv_mem, 0, sizeof(recv_mem)); + EXPECT_NE(recv(self->cfd, recv_mem, strlen(test_str_second), 0), -1); + EXPECT_EQ(memcmp(test_str_second, recv_mem, strlen(test_str_second)), + 0); +} + +TEST_F(tls, recv_nonblock) +{ + char buf[4096]; + bool err; + + EXPECT_EQ(recv(self->cfd, buf, sizeof(buf), MSG_DONTWAIT), -1); + err = (errno == EAGAIN || errno == EWOULDBLOCK); + EXPECT_EQ(err, true); +} + +TEST_F(tls, recv_peek) +{ + char const *test_str = "test_read_peek"; + int send_len = strlen(test_str) + 1; + char buf[15]; + + EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len); + EXPECT_NE(recv(self->cfd, buf, send_len, MSG_PEEK), -1); + EXPECT_EQ(memcmp(test_str, buf, send_len), 0); + memset(buf, 0, sizeof(buf)); + EXPECT_NE(recv(self->cfd, buf, send_len, 0), -1); + EXPECT_EQ(memcmp(test_str, buf, send_len), 0); +} + +TEST_F(tls, recv_peek_multiple) +{ + char const *test_str = "test_read_peek"; + int send_len = strlen(test_str) + 1; + unsigned int num_peeks = 100; + char buf[15]; + int i; + + EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len); + for (i = 0; i < num_peeks; i++) { + EXPECT_NE(recv(self->cfd, buf, send_len, MSG_PEEK), -1); + EXPECT_EQ(memcmp(test_str, buf, send_len), 0); + memset(buf, 0, sizeof(buf)); + } + EXPECT_NE(recv(self->cfd, buf, send_len, 0), -1); + EXPECT_EQ(memcmp(test_str, buf, send_len), 0); +} + +TEST_F(tls, recv_peek_multiple_records) +{ + char const *test_str = "test_read_peek_mult_recs"; + char const *test_str_first = "test_read_peek"; + char const *test_str_second = "_mult_recs"; + int len; + char buf[64]; + + len = strlen(test_str_first); + EXPECT_EQ(send(self->fd, test_str_first, len, 0), len); + + len = strlen(test_str_second) + 1; + EXPECT_EQ(send(self->fd, test_str_second, len, 0), len); + + len = strlen(test_str_first); + memset(buf, 0, len); + EXPECT_EQ(recv(self->cfd, buf, len, MSG_PEEK | MSG_WAITALL), len); + + /* MSG_PEEK can only peek into the current record. */ + len = strlen(test_str_first); + EXPECT_EQ(memcmp(test_str_first, buf, len), 0); + + len = strlen(test_str) + 1; + memset(buf, 0, len); + EXPECT_EQ(recv(self->cfd, buf, len, MSG_WAITALL), len); + + /* Non-MSG_PEEK will advance strparser (and therefore record) + * however. + */ + len = strlen(test_str) + 1; + EXPECT_EQ(memcmp(test_str, buf, len), 0); + + /* MSG_MORE will hold current record open, so later MSG_PEEK + * will see everything. + */ + len = strlen(test_str_first); + EXPECT_EQ(send(self->fd, test_str_first, len, MSG_MORE), len); + + len = strlen(test_str_second) + 1; + EXPECT_EQ(send(self->fd, test_str_second, len, 0), len); + + len = strlen(test_str) + 1; + memset(buf, 0, len); + EXPECT_EQ(recv(self->cfd, buf, len, MSG_PEEK | MSG_WAITALL), len); + + len = strlen(test_str) + 1; + EXPECT_EQ(memcmp(test_str, buf, len), 0); +} + +TEST_F(tls, pollin) +{ + char const *test_str = "test_poll"; + struct pollfd fd = { 0, 0, 0 }; + char buf[10]; + int send_len = 10; + + EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len); + fd.fd = self->cfd; + fd.events = POLLIN; + + EXPECT_EQ(poll(&fd, 1, 20), 1); + EXPECT_EQ(fd.revents & POLLIN, 1); + EXPECT_EQ(recv(self->cfd, buf, send_len, 0), send_len); + /* Test timing out */ + EXPECT_EQ(poll(&fd, 1, 20), 0); +} + +TEST_F(tls, poll_wait) +{ + char const *test_str = "test_poll_wait"; + int send_len = strlen(test_str) + 1; + struct pollfd fd = { 0, 0, 0 }; + char recv_mem[15]; + + fd.fd = self->cfd; + fd.events = POLLIN; + EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len); + /* Set timeout to inf. secs */ + EXPECT_EQ(poll(&fd, 1, -1), 1); + EXPECT_EQ(fd.revents & POLLIN, 1); + EXPECT_EQ(recv(self->cfd, recv_mem, send_len, 0), send_len); +} + +TEST_F(tls, blocking) +{ + size_t data = 100000; + int res = fork(); + + EXPECT_NE(res, -1); + + if (res) { + /* parent */ + size_t left = data; + char buf[16384]; + int status; + int pid2; + + while (left) { + int res = send(self->fd, buf, + left > 16384 ? 16384 : left, 0); + + EXPECT_GE(res, 0); + left -= res; + } + + pid2 = wait(&status); + EXPECT_EQ(status, 0); + EXPECT_EQ(res, pid2); + } else { + /* child */ + size_t left = data; + char buf[16384]; + + while (left) { + int res = recv(self->cfd, buf, + left > 16384 ? 16384 : left, 0); + + EXPECT_GE(res, 0); + left -= res; + } + } +} + +TEST_F(tls, nonblocking) +{ + size_t data = 100000; + int sendbuf = 100; + int flags; + int res; + + flags = fcntl(self->fd, F_GETFL, 0); + fcntl(self->fd, F_SETFL, flags | O_NONBLOCK); + fcntl(self->cfd, F_SETFL, flags | O_NONBLOCK); + + /* Ensure nonblocking behavior by imposing a small send + * buffer. + */ + EXPECT_EQ(setsockopt(self->fd, SOL_SOCKET, SO_SNDBUF, + &sendbuf, sizeof(sendbuf)), 0); + + res = fork(); + EXPECT_NE(res, -1); + + if (res) { + /* parent */ + bool eagain = false; + size_t left = data; + char buf[16384]; + int status; + int pid2; + + while (left) { + int res = send(self->fd, buf, + left > 16384 ? 16384 : left, 0); + + if (res == -1 && errno == EAGAIN) { + eagain = true; + usleep(10000); + continue; + } + EXPECT_GE(res, 0); + left -= res; + } + + EXPECT_TRUE(eagain); + pid2 = wait(&status); + + EXPECT_EQ(status, 0); + EXPECT_EQ(res, pid2); + } else { + /* child */ + bool eagain = false; + size_t left = data; + char buf[16384]; + + while (left) { + int res = recv(self->cfd, buf, + left > 16384 ? 16384 : left, 0); + + if (res == -1 && errno == EAGAIN) { + eagain = true; + usleep(10000); + continue; + } + EXPECT_GE(res, 0); + left -= res; + } + EXPECT_TRUE(eagain); + } +} + +TEST_F(tls, control_msg) +{ + if (self->notls) + return; + + char cbuf[CMSG_SPACE(sizeof(char))]; + char const *test_str = "test_read"; + int cmsg_len = sizeof(char); + char record_type = 100; + struct cmsghdr *cmsg; + struct msghdr msg; + int send_len = 10; + struct iovec vec; + char buf[10]; + + vec.iov_base = (char *)test_str; + vec.iov_len = 10; + memset(&msg, 0, sizeof(struct msghdr)); + msg.msg_iov = &vec; + msg.msg_iovlen = 1; + msg.msg_control = cbuf; + msg.msg_controllen = sizeof(cbuf); + cmsg = CMSG_FIRSTHDR(&msg); + cmsg->cmsg_level = SOL_TLS; + /* test sending non-record types. */ + cmsg->cmsg_type = TLS_SET_RECORD_TYPE; + cmsg->cmsg_len = CMSG_LEN(cmsg_len); + *CMSG_DATA(cmsg) = record_type; + msg.msg_controllen = cmsg->cmsg_len; + + EXPECT_EQ(sendmsg(self->fd, &msg, 0), send_len); + /* Should fail because we didn't provide a control message */ + EXPECT_EQ(recv(self->cfd, buf, send_len, 0), -1); + + vec.iov_base = buf; + EXPECT_EQ(recvmsg(self->cfd, &msg, 0), send_len); + cmsg = CMSG_FIRSTHDR(&msg); + EXPECT_NE(cmsg, NULL); + EXPECT_EQ(cmsg->cmsg_level, SOL_TLS); + EXPECT_EQ(cmsg->cmsg_type, TLS_GET_RECORD_TYPE); + record_type = *((unsigned char *)CMSG_DATA(cmsg)); + EXPECT_EQ(record_type, 100); + EXPECT_EQ(memcmp(buf, test_str, send_len), 0); +} + +TEST_HARNESS_MAIN diff --git a/tools/testing/selftests/net/udpgso.c b/tools/testing/selftests/net/udpgso.c new file mode 100644 index 000000000..23177b643 --- /dev/null +++ b/tools/testing/selftests/net/udpgso.c @@ -0,0 +1,685 @@ +// SPDX-License-Identifier: GPL-2.0 + +#define _GNU_SOURCE + +#include <stddef.h> +#include <arpa/inet.h> +#include <error.h> +#include <errno.h> +#include <net/if.h> +#include <linux/in.h> +#include <linux/netlink.h> +#include <linux/rtnetlink.h> +#include <netinet/if_ether.h> +#include <netinet/ip.h> +#include <netinet/ip6.h> +#include <netinet/udp.h> +#include <stdbool.h> +#include <stdlib.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/ioctl.h> +#include <sys/socket.h> +#include <sys/stat.h> +#include <sys/time.h> +#include <sys/types.h> +#include <unistd.h> + +#ifndef ETH_MAX_MTU +#define ETH_MAX_MTU 0xFFFFU +#endif + +#ifndef UDP_SEGMENT +#define UDP_SEGMENT 103 +#endif + +#ifndef UDP_MAX_SEGMENTS +#define UDP_MAX_SEGMENTS (1 << 6UL) +#endif + +#define CONST_MTU_TEST 1500 + +#define CONST_HDRLEN_V4 (sizeof(struct iphdr) + sizeof(struct udphdr)) +#define CONST_HDRLEN_V6 (sizeof(struct ip6_hdr) + sizeof(struct udphdr)) + +#define CONST_MSS_V4 (CONST_MTU_TEST - CONST_HDRLEN_V4) +#define CONST_MSS_V6 (CONST_MTU_TEST - CONST_HDRLEN_V6) + +#define CONST_MAX_SEGS_V4 (ETH_MAX_MTU / CONST_MSS_V4) +#define CONST_MAX_SEGS_V6 (ETH_MAX_MTU / CONST_MSS_V6) + +static bool cfg_do_ipv4; +static bool cfg_do_ipv6; +static bool cfg_do_connected; +static bool cfg_do_connectionless; +static bool cfg_do_msgmore; +static bool cfg_do_setsockopt; +static int cfg_specific_test_id = -1; + +static const char cfg_ifname[] = "lo"; +static unsigned short cfg_port = 9000; + +static char buf[ETH_MAX_MTU]; + +struct testcase { + int tlen; /* send() buffer size, may exceed mss */ + bool tfail; /* send() call is expected to fail */ + int gso_len; /* mss after applying gso */ + int r_num_mss; /* recv(): number of calls of full mss */ + int r_len_last; /* recv(): size of last non-mss dgram, if any */ +}; + +const struct in6_addr addr6 = IN6ADDR_LOOPBACK_INIT; +const struct in_addr addr4 = { .s_addr = __constant_htonl(INADDR_LOOPBACK + 2) }; + +struct testcase testcases_v4[] = { + { + /* no GSO: send a single byte */ + .tlen = 1, + .r_len_last = 1, + }, + { + /* no GSO: send a single MSS */ + .tlen = CONST_MSS_V4, + .r_num_mss = 1, + }, + { + /* no GSO: send a single MSS + 1B: fail */ + .tlen = CONST_MSS_V4 + 1, + .tfail = true, + }, + { + /* send a single MSS: will fall back to no GSO */ + .tlen = CONST_MSS_V4, + .gso_len = CONST_MSS_V4, + .r_num_mss = 1, + }, + { + /* send a single MSS + 1B */ + .tlen = CONST_MSS_V4 + 1, + .gso_len = CONST_MSS_V4, + .r_num_mss = 1, + .r_len_last = 1, + }, + { + /* send exactly 2 MSS */ + .tlen = CONST_MSS_V4 * 2, + .gso_len = CONST_MSS_V4, + .r_num_mss = 2, + }, + { + /* send 2 MSS + 1B */ + .tlen = (CONST_MSS_V4 * 2) + 1, + .gso_len = CONST_MSS_V4, + .r_num_mss = 2, + .r_len_last = 1, + }, + { + /* send MAX segs */ + .tlen = (ETH_MAX_MTU / CONST_MSS_V4) * CONST_MSS_V4, + .gso_len = CONST_MSS_V4, + .r_num_mss = (ETH_MAX_MTU / CONST_MSS_V4), + }, + + { + /* send MAX bytes */ + .tlen = ETH_MAX_MTU - CONST_HDRLEN_V4, + .gso_len = CONST_MSS_V4, + .r_num_mss = CONST_MAX_SEGS_V4, + .r_len_last = ETH_MAX_MTU - CONST_HDRLEN_V4 - + (CONST_MAX_SEGS_V4 * CONST_MSS_V4), + }, + { + /* send MAX + 1: fail */ + .tlen = ETH_MAX_MTU - CONST_HDRLEN_V4 + 1, + .gso_len = CONST_MSS_V4, + .tfail = true, + }, + { + /* send a single 1B MSS: will fall back to no GSO */ + .tlen = 1, + .gso_len = 1, + .r_num_mss = 1, + }, + { + /* send 2 1B segments */ + .tlen = 2, + .gso_len = 1, + .r_num_mss = 2, + }, + { + /* send 2B + 2B + 1B segments */ + .tlen = 5, + .gso_len = 2, + .r_num_mss = 2, + .r_len_last = 1, + }, + { + /* send max number of min sized segments */ + .tlen = UDP_MAX_SEGMENTS, + .gso_len = 1, + .r_num_mss = UDP_MAX_SEGMENTS, + }, + { + /* send max number + 1 of min sized segments: fail */ + .tlen = UDP_MAX_SEGMENTS + 1, + .gso_len = 1, + .tfail = true, + }, + { + /* EOL */ + } +}; + +#ifndef IP6_MAX_MTU +#define IP6_MAX_MTU (ETH_MAX_MTU + sizeof(struct ip6_hdr)) +#endif + +struct testcase testcases_v6[] = { + { + /* no GSO: send a single byte */ + .tlen = 1, + .r_len_last = 1, + }, + { + /* no GSO: send a single MSS */ + .tlen = CONST_MSS_V6, + .r_num_mss = 1, + }, + { + /* no GSO: send a single MSS + 1B: fail */ + .tlen = CONST_MSS_V6 + 1, + .tfail = true, + }, + { + /* send a single MSS: will fall back to no GSO */ + .tlen = CONST_MSS_V6, + .gso_len = CONST_MSS_V6, + .r_num_mss = 1, + }, + { + /* send a single MSS + 1B */ + .tlen = CONST_MSS_V6 + 1, + .gso_len = CONST_MSS_V6, + .r_num_mss = 1, + .r_len_last = 1, + }, + { + /* send exactly 2 MSS */ + .tlen = CONST_MSS_V6 * 2, + .gso_len = CONST_MSS_V6, + .r_num_mss = 2, + }, + { + /* send 2 MSS + 1B */ + .tlen = (CONST_MSS_V6 * 2) + 1, + .gso_len = CONST_MSS_V6, + .r_num_mss = 2, + .r_len_last = 1, + }, + { + /* send MAX segs */ + .tlen = (IP6_MAX_MTU / CONST_MSS_V6) * CONST_MSS_V6, + .gso_len = CONST_MSS_V6, + .r_num_mss = (IP6_MAX_MTU / CONST_MSS_V6), + }, + + { + /* send MAX bytes */ + .tlen = IP6_MAX_MTU - CONST_HDRLEN_V6, + .gso_len = CONST_MSS_V6, + .r_num_mss = CONST_MAX_SEGS_V6, + .r_len_last = IP6_MAX_MTU - CONST_HDRLEN_V6 - + (CONST_MAX_SEGS_V6 * CONST_MSS_V6), + }, + { + /* send MAX + 1: fail */ + .tlen = IP6_MAX_MTU - CONST_HDRLEN_V6 + 1, + .gso_len = CONST_MSS_V6, + .tfail = true, + }, + { + /* send a single 1B MSS: will fall back to no GSO */ + .tlen = 1, + .gso_len = 1, + .r_num_mss = 1, + }, + { + /* send 2 1B segments */ + .tlen = 2, + .gso_len = 1, + .r_num_mss = 2, + }, + { + /* send 2B + 2B + 1B segments */ + .tlen = 5, + .gso_len = 2, + .r_num_mss = 2, + .r_len_last = 1, + }, + { + /* send max number of min sized segments */ + .tlen = UDP_MAX_SEGMENTS, + .gso_len = 1, + .r_num_mss = UDP_MAX_SEGMENTS, + }, + { + /* send max number + 1 of min sized segments: fail */ + .tlen = UDP_MAX_SEGMENTS + 1, + .gso_len = 1, + .tfail = true, + }, + { + /* EOL */ + } +}; + +static unsigned int get_device_mtu(int fd, const char *ifname) +{ + struct ifreq ifr; + + memset(&ifr, 0, sizeof(ifr)); + + strcpy(ifr.ifr_name, ifname); + + if (ioctl(fd, SIOCGIFMTU, &ifr)) + error(1, errno, "ioctl get mtu"); + + return ifr.ifr_mtu; +} + +static void __set_device_mtu(int fd, const char *ifname, unsigned int mtu) +{ + struct ifreq ifr; + + memset(&ifr, 0, sizeof(ifr)); + + ifr.ifr_mtu = mtu; + strcpy(ifr.ifr_name, ifname); + + if (ioctl(fd, SIOCSIFMTU, &ifr)) + error(1, errno, "ioctl set mtu"); +} + +static void set_device_mtu(int fd, int mtu) +{ + int val; + + val = get_device_mtu(fd, cfg_ifname); + fprintf(stderr, "device mtu (orig): %u\n", val); + + __set_device_mtu(fd, cfg_ifname, mtu); + val = get_device_mtu(fd, cfg_ifname); + if (val != mtu) + error(1, 0, "unable to set device mtu to %u\n", val); + + fprintf(stderr, "device mtu (test): %u\n", val); +} + +static void set_pmtu_discover(int fd, bool is_ipv4) +{ + int level, name, val; + + if (is_ipv4) { + level = SOL_IP; + name = IP_MTU_DISCOVER; + val = IP_PMTUDISC_DO; + } else { + level = SOL_IPV6; + name = IPV6_MTU_DISCOVER; + val = IPV6_PMTUDISC_DO; + } + + if (setsockopt(fd, level, name, &val, sizeof(val))) + error(1, errno, "setsockopt path mtu"); +} + +static unsigned int get_path_mtu(int fd, bool is_ipv4) +{ + socklen_t vallen; + unsigned int mtu; + int ret; + + vallen = sizeof(mtu); + if (is_ipv4) + ret = getsockopt(fd, SOL_IP, IP_MTU, &mtu, &vallen); + else + ret = getsockopt(fd, SOL_IPV6, IPV6_MTU, &mtu, &vallen); + + if (ret) + error(1, errno, "getsockopt mtu"); + + + fprintf(stderr, "path mtu (read): %u\n", mtu); + return mtu; +} + +/* very wordy version of system("ip route add dev lo mtu 1500 127.0.0.3/32") */ +static void set_route_mtu(int mtu, bool is_ipv4) +{ + struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK }; + struct nlmsghdr *nh; + struct rtattr *rta; + struct rtmsg *rt; + char data[NLMSG_ALIGN(sizeof(*nh)) + + NLMSG_ALIGN(sizeof(*rt)) + + NLMSG_ALIGN(RTA_LENGTH(sizeof(addr6))) + + NLMSG_ALIGN(RTA_LENGTH(sizeof(int))) + + NLMSG_ALIGN(RTA_LENGTH(0) + RTA_LENGTH(sizeof(int)))]; + int fd, ret, alen, off = 0; + + alen = is_ipv4 ? sizeof(addr4) : sizeof(addr6); + + fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE); + if (fd == -1) + error(1, errno, "socket netlink"); + + memset(data, 0, sizeof(data)); + + nh = (void *)data; + nh->nlmsg_type = RTM_NEWROUTE; + nh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE; + off += NLMSG_ALIGN(sizeof(*nh)); + + rt = (void *)(data + off); + rt->rtm_family = is_ipv4 ? AF_INET : AF_INET6; + rt->rtm_table = RT_TABLE_MAIN; + rt->rtm_dst_len = alen << 3; + rt->rtm_protocol = RTPROT_BOOT; + rt->rtm_scope = RT_SCOPE_UNIVERSE; + rt->rtm_type = RTN_UNICAST; + off += NLMSG_ALIGN(sizeof(*rt)); + + rta = (void *)(data + off); + rta->rta_type = RTA_DST; + rta->rta_len = RTA_LENGTH(alen); + if (is_ipv4) + memcpy(RTA_DATA(rta), &addr4, alen); + else + memcpy(RTA_DATA(rta), &addr6, alen); + off += NLMSG_ALIGN(rta->rta_len); + + rta = (void *)(data + off); + rta->rta_type = RTA_OIF; + rta->rta_len = RTA_LENGTH(sizeof(int)); + *((int *)(RTA_DATA(rta))) = 1; //if_nametoindex("lo"); + off += NLMSG_ALIGN(rta->rta_len); + + /* MTU is a subtype in a metrics type */ + rta = (void *)(data + off); + rta->rta_type = RTA_METRICS; + rta->rta_len = RTA_LENGTH(0) + RTA_LENGTH(sizeof(int)); + off += NLMSG_ALIGN(rta->rta_len); + + /* now fill MTU subtype. Note that it fits within above rta_len */ + rta = (void *)(((char *) rta) + RTA_LENGTH(0)); + rta->rta_type = RTAX_MTU; + rta->rta_len = RTA_LENGTH(sizeof(int)); + *((int *)(RTA_DATA(rta))) = mtu; + + nh->nlmsg_len = off; + + ret = sendto(fd, data, off, 0, (void *)&nladdr, sizeof(nladdr)); + if (ret != off) + error(1, errno, "send netlink: %uB != %uB\n", ret, off); + + if (close(fd)) + error(1, errno, "close netlink"); + + fprintf(stderr, "route mtu (test): %u\n", mtu); +} + +static bool __send_one(int fd, struct msghdr *msg, int flags) +{ + int ret; + + ret = sendmsg(fd, msg, flags); + if (ret == -1 && + (errno == EMSGSIZE || errno == ENOMEM || errno == EINVAL)) + return false; + if (ret == -1) + error(1, errno, "sendmsg"); + if (ret != msg->msg_iov->iov_len) + error(1, 0, "sendto: %d != %lu", ret, msg->msg_iov->iov_len); + if (msg->msg_flags) + error(1, 0, "sendmsg: return flags 0x%x\n", msg->msg_flags); + + return true; +} + +static bool send_one(int fd, int len, int gso_len, + struct sockaddr *addr, socklen_t alen) +{ + char control[CMSG_SPACE(sizeof(uint16_t))] = {0}; + struct msghdr msg = {0}; + struct iovec iov = {0}; + struct cmsghdr *cm; + + iov.iov_base = buf; + iov.iov_len = len; + + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + + msg.msg_name = addr; + msg.msg_namelen = alen; + + if (gso_len && !cfg_do_setsockopt) { + msg.msg_control = control; + msg.msg_controllen = sizeof(control); + + cm = CMSG_FIRSTHDR(&msg); + cm->cmsg_level = SOL_UDP; + cm->cmsg_type = UDP_SEGMENT; + cm->cmsg_len = CMSG_LEN(sizeof(uint16_t)); + *((uint16_t *) CMSG_DATA(cm)) = gso_len; + } + + /* If MSG_MORE, send 1 byte followed by remainder */ + if (cfg_do_msgmore && len > 1) { + iov.iov_len = 1; + if (!__send_one(fd, &msg, MSG_MORE)) + error(1, 0, "send 1B failed"); + + iov.iov_base++; + iov.iov_len = len - 1; + } + + return __send_one(fd, &msg, 0); +} + +static int recv_one(int fd, int flags) +{ + int ret; + + ret = recv(fd, buf, sizeof(buf), flags); + if (ret == -1 && errno == EAGAIN && (flags & MSG_DONTWAIT)) + return 0; + if (ret == -1) + error(1, errno, "recv"); + + return ret; +} + +static void run_one(struct testcase *test, int fdt, int fdr, + struct sockaddr *addr, socklen_t alen) +{ + int i, ret, val, mss; + bool sent; + + fprintf(stderr, "ipv%d tx:%d gso:%d %s\n", + addr->sa_family == AF_INET ? 4 : 6, + test->tlen, test->gso_len, + test->tfail ? "(fail)" : ""); + + val = test->gso_len; + if (cfg_do_setsockopt) { + if (setsockopt(fdt, SOL_UDP, UDP_SEGMENT, &val, sizeof(val))) + error(1, errno, "setsockopt udp segment"); + } + + sent = send_one(fdt, test->tlen, test->gso_len, addr, alen); + if (sent && test->tfail) + error(1, 0, "send succeeded while expecting failure"); + if (!sent && !test->tfail) + error(1, 0, "send failed while expecting success"); + if (!sent) + return; + + if (test->gso_len) + mss = test->gso_len; + else + mss = addr->sa_family == AF_INET ? CONST_MSS_V4 : CONST_MSS_V6; + + + /* Recv all full MSS datagrams */ + for (i = 0; i < test->r_num_mss; i++) { + ret = recv_one(fdr, 0); + if (ret != mss) + error(1, 0, "recv.%d: %d != %d", i, ret, mss); + } + + /* Recv the non-full last datagram, if tlen was not a multiple of mss */ + if (test->r_len_last) { + ret = recv_one(fdr, 0); + if (ret != test->r_len_last) + error(1, 0, "recv.%d: %d != %d (last)", + i, ret, test->r_len_last); + } + + /* Verify received all data */ + ret = recv_one(fdr, MSG_DONTWAIT); + if (ret) + error(1, 0, "recv: unexpected datagram"); +} + +static void run_all(int fdt, int fdr, struct sockaddr *addr, socklen_t alen) +{ + struct testcase *tests, *test; + + tests = addr->sa_family == AF_INET ? testcases_v4 : testcases_v6; + + for (test = tests; test->tlen; test++) { + /* if a specific test is given, then skip all others */ + if (cfg_specific_test_id == -1 || + cfg_specific_test_id == test - tests) + run_one(test, fdt, fdr, addr, alen); + } +} + +static void run_test(struct sockaddr *addr, socklen_t alen) +{ + struct timeval tv = { .tv_usec = 100 * 1000 }; + int fdr, fdt, val; + + fdr = socket(addr->sa_family, SOCK_DGRAM, 0); + if (fdr == -1) + error(1, errno, "socket r"); + + if (bind(fdr, addr, alen)) + error(1, errno, "bind"); + + /* Have tests fail quickly instead of hang */ + if (setsockopt(fdr, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv))) + error(1, errno, "setsockopt rcv timeout"); + + fdt = socket(addr->sa_family, SOCK_DGRAM, 0); + if (fdt == -1) + error(1, errno, "socket t"); + + /* Do not fragment these datagrams: only succeed if GSO works */ + set_pmtu_discover(fdt, addr->sa_family == AF_INET); + + if (cfg_do_connectionless) { + set_device_mtu(fdt, CONST_MTU_TEST); + run_all(fdt, fdr, addr, alen); + } + + if (cfg_do_connected) { + set_device_mtu(fdt, CONST_MTU_TEST + 100); + set_route_mtu(CONST_MTU_TEST, addr->sa_family == AF_INET); + + if (connect(fdt, addr, alen)) + error(1, errno, "connect"); + + val = get_path_mtu(fdt, addr->sa_family == AF_INET); + if (val != CONST_MTU_TEST) + error(1, 0, "bad path mtu %u\n", val); + + run_all(fdt, fdr, addr, 0 /* use connected addr */); + } + + if (close(fdt)) + error(1, errno, "close t"); + if (close(fdr)) + error(1, errno, "close r"); +} + +static void run_test_v4(void) +{ + struct sockaddr_in addr = {0}; + + addr.sin_family = AF_INET; + addr.sin_port = htons(cfg_port); + addr.sin_addr = addr4; + + run_test((void *)&addr, sizeof(addr)); +} + +static void run_test_v6(void) +{ + struct sockaddr_in6 addr = {0}; + + addr.sin6_family = AF_INET6; + addr.sin6_port = htons(cfg_port); + addr.sin6_addr = addr6; + + run_test((void *)&addr, sizeof(addr)); +} + +static void parse_opts(int argc, char **argv) +{ + int c; + + while ((c = getopt(argc, argv, "46cCmst:")) != -1) { + switch (c) { + case '4': + cfg_do_ipv4 = true; + break; + case '6': + cfg_do_ipv6 = true; + break; + case 'c': + cfg_do_connected = true; + break; + case 'C': + cfg_do_connectionless = true; + break; + case 'm': + cfg_do_msgmore = true; + break; + case 's': + cfg_do_setsockopt = true; + break; + case 't': + cfg_specific_test_id = strtoul(optarg, NULL, 0); + break; + default: + error(1, 0, "%s: parse error", argv[0]); + } + } +} + +int main(int argc, char **argv) +{ + parse_opts(argc, argv); + + if (cfg_do_ipv4) + run_test_v4(); + if (cfg_do_ipv6) + run_test_v6(); + + fprintf(stderr, "OK\n"); + return 0; +} diff --git a/tools/testing/selftests/net/udpgso.sh b/tools/testing/selftests/net/udpgso.sh new file mode 100755 index 000000000..fec24f584 --- /dev/null +++ b/tools/testing/selftests/net/udpgso.sh @@ -0,0 +1,29 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# +# Run a series of udpgso regression tests + +echo "ipv4 cmsg" +./in_netns.sh ./udpgso -4 -C + +echo "ipv4 setsockopt" +./in_netns.sh ./udpgso -4 -C -s + +echo "ipv6 cmsg" +./in_netns.sh ./udpgso -6 -C + +echo "ipv6 setsockopt" +./in_netns.sh ./udpgso -6 -C -s + +echo "ipv4 connected" +./in_netns.sh ./udpgso -4 -c + +# blocked on 2nd loopback address +# echo "ipv6 connected" +# ./in_netns.sh ./udpgso -6 -c + +echo "ipv4 msg_more" +./in_netns.sh ./udpgso -4 -C -m + +echo "ipv6 msg_more" +./in_netns.sh ./udpgso -6 -C -m diff --git a/tools/testing/selftests/net/udpgso_bench.sh b/tools/testing/selftests/net/udpgso_bench.sh new file mode 100755 index 000000000..99e537ab5 --- /dev/null +++ b/tools/testing/selftests/net/udpgso_bench.sh @@ -0,0 +1,71 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# Run a series of udpgso benchmarks + +wake_children() { + local -r jobs="$(jobs -p)" + + if [[ "${jobs}" != "" ]]; then + kill -1 ${jobs} 2>/dev/null + fi +} +trap wake_children EXIT + +run_one() { + local -r args=$@ + + ./udpgso_bench_rx & + ./udpgso_bench_rx -t & + + ./udpgso_bench_tx ${args} +} + +run_in_netns() { + local -r args=$@ + + ./in_netns.sh $0 __subprocess ${args} +} + +run_udp() { + local -r args=$@ + + echo "udp" + run_in_netns ${args} + + echo "udp gso" + run_in_netns ${args} -S +} + +run_tcp() { + local -r args=$@ + + echo "tcp" + run_in_netns ${args} -t + + echo "tcp zerocopy" + run_in_netns ${args} -t -z +} + +run_all() { + local -r core_args="-l 4" + local -r ipv4_args="${core_args} -4 -D 127.0.0.1" + local -r ipv6_args="${core_args} -6 -D ::1" + + echo "ipv4" + run_tcp "${ipv4_args}" + run_udp "${ipv4_args}" + + echo "ipv6" + run_tcp "${ipv4_args}" + run_udp "${ipv6_args}" +} + +if [[ $# -eq 0 ]]; then + run_all +elif [[ $1 == "__subprocess" ]]; then + shift + run_one $@ +else + run_in_netns $@ +fi diff --git a/tools/testing/selftests/net/udpgso_bench_rx.c b/tools/testing/selftests/net/udpgso_bench_rx.c new file mode 100644 index 000000000..727cf67a3 --- /dev/null +++ b/tools/testing/selftests/net/udpgso_bench_rx.c @@ -0,0 +1,265 @@ +// SPDX-License-Identifier: GPL-2.0 + +#define _GNU_SOURCE + +#include <arpa/inet.h> +#include <error.h> +#include <errno.h> +#include <limits.h> +#include <linux/errqueue.h> +#include <linux/if_packet.h> +#include <linux/socket.h> +#include <linux/sockios.h> +#include <net/ethernet.h> +#include <net/if.h> +#include <netinet/ip.h> +#include <netinet/ip6.h> +#include <netinet/tcp.h> +#include <netinet/udp.h> +#include <poll.h> +#include <sched.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <sys/ioctl.h> +#include <sys/socket.h> +#include <sys/stat.h> +#include <sys/time.h> +#include <sys/types.h> +#include <sys/wait.h> +#include <unistd.h> + +static int cfg_port = 8000; +static bool cfg_tcp; +static bool cfg_verify; + +static bool interrupted; +static unsigned long packets, bytes; + +static void sigint_handler(int signum) +{ + if (signum == SIGINT) + interrupted = true; +} + +static unsigned long gettimeofday_ms(void) +{ + struct timeval tv; + + gettimeofday(&tv, NULL); + return (tv.tv_sec * 1000) + (tv.tv_usec / 1000); +} + +static void do_poll(int fd) +{ + struct pollfd pfd; + int ret; + + pfd.events = POLLIN; + pfd.revents = 0; + pfd.fd = fd; + + do { + ret = poll(&pfd, 1, 10); + if (ret == -1) + error(1, errno, "poll"); + if (ret == 0) + continue; + if (pfd.revents != POLLIN) + error(1, errno, "poll: 0x%x expected 0x%x\n", + pfd.revents, POLLIN); + } while (!ret && !interrupted); +} + +static int do_socket(bool do_tcp) +{ + struct sockaddr_in6 addr = {0}; + int fd, val; + + fd = socket(PF_INET6, cfg_tcp ? SOCK_STREAM : SOCK_DGRAM, 0); + if (fd == -1) + error(1, errno, "socket"); + + val = 1 << 21; + if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &val, sizeof(val))) + error(1, errno, "setsockopt rcvbuf"); + val = 1; + if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &val, sizeof(val))) + error(1, errno, "setsockopt reuseport"); + + addr.sin6_family = PF_INET6; + addr.sin6_port = htons(cfg_port); + addr.sin6_addr = in6addr_any; + if (bind(fd, (void *) &addr, sizeof(addr))) + error(1, errno, "bind"); + + if (do_tcp) { + int accept_fd = fd; + + if (listen(accept_fd, 1)) + error(1, errno, "listen"); + + do_poll(accept_fd); + + fd = accept(accept_fd, NULL, NULL); + if (fd == -1) + error(1, errno, "accept"); + if (close(accept_fd)) + error(1, errno, "close accept fd"); + } + + return fd; +} + +/* Flush all outstanding bytes for the tcp receive queue */ +static void do_flush_tcp(int fd) +{ + int ret; + + while (true) { + /* MSG_TRUNC flushes up to len bytes */ + ret = recv(fd, NULL, 1 << 21, MSG_TRUNC | MSG_DONTWAIT); + if (ret == -1 && errno == EAGAIN) + return; + if (ret == -1) + error(1, errno, "flush"); + if (ret == 0) { + /* client detached */ + exit(0); + } + + packets++; + bytes += ret; + } + +} + +static char sanitized_char(char val) +{ + return (val >= 'a' && val <= 'z') ? val : '.'; +} + +static void do_verify_udp(const char *data, int len) +{ + char cur = data[0]; + int i; + + /* verify contents */ + if (cur < 'a' || cur > 'z') + error(1, 0, "data initial byte out of range"); + + for (i = 1; i < len; i++) { + if (cur == 'z') + cur = 'a'; + else + cur++; + + if (data[i] != cur) + error(1, 0, "data[%d]: len %d, %c(%hhu) != %c(%hhu)\n", + i, len, + sanitized_char(data[i]), data[i], + sanitized_char(cur), cur); + } +} + +/* Flush all outstanding datagrams. Verify first few bytes of each. */ +static void do_flush_udp(int fd) +{ + static char rbuf[ETH_DATA_LEN]; + int ret, len, budget = 256; + + len = cfg_verify ? sizeof(rbuf) : 0; + while (budget--) { + /* MSG_TRUNC will make return value full datagram length */ + ret = recv(fd, rbuf, len, MSG_TRUNC | MSG_DONTWAIT); + if (ret == -1 && errno == EAGAIN) + return; + if (ret == -1) + error(1, errno, "recv"); + if (len) { + if (ret == 0) + error(1, errno, "recv: 0 byte datagram\n"); + + do_verify_udp(rbuf, ret); + } + + packets++; + bytes += ret; + } +} + +static void usage(const char *filepath) +{ + error(1, 0, "Usage: %s [-tv] [-p port]", filepath); +} + +static void parse_opts(int argc, char **argv) +{ + int c; + + while ((c = getopt(argc, argv, "ptv")) != -1) { + switch (c) { + case 'p': + cfg_port = htons(strtoul(optarg, NULL, 0)); + break; + case 't': + cfg_tcp = true; + break; + case 'v': + cfg_verify = true; + break; + } + } + + if (optind != argc) + usage(argv[0]); + + if (cfg_tcp && cfg_verify) + error(1, 0, "TODO: implement verify mode for tcp"); +} + +static void do_recv(void) +{ + unsigned long tnow, treport; + int fd; + + fd = do_socket(cfg_tcp); + + treport = gettimeofday_ms() + 1000; + do { + do_poll(fd); + + if (cfg_tcp) + do_flush_tcp(fd); + else + do_flush_udp(fd); + + tnow = gettimeofday_ms(); + if (tnow > treport) { + if (packets) + fprintf(stderr, + "%s rx: %6lu MB/s %8lu calls/s\n", + cfg_tcp ? "tcp" : "udp", + bytes >> 20, packets); + bytes = packets = 0; + treport = tnow + 1000; + } + + } while (!interrupted); + + if (close(fd)) + error(1, errno, "close"); +} + +int main(int argc, char **argv) +{ + parse_opts(argc, argv); + + signal(SIGINT, sigint_handler); + + do_recv(); + + return 0; +} diff --git a/tools/testing/selftests/net/udpgso_bench_tx.c b/tools/testing/selftests/net/udpgso_bench_tx.c new file mode 100644 index 000000000..463a2cbd0 --- /dev/null +++ b/tools/testing/selftests/net/udpgso_bench_tx.c @@ -0,0 +1,426 @@ +// SPDX-License-Identifier: GPL-2.0 + +#define _GNU_SOURCE + +#include <arpa/inet.h> +#include <errno.h> +#include <error.h> +#include <netinet/if_ether.h> +#include <netinet/in.h> +#include <netinet/ip.h> +#include <netinet/ip6.h> +#include <netinet/udp.h> +#include <poll.h> +#include <sched.h> +#include <signal.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/socket.h> +#include <sys/time.h> +#include <sys/types.h> +#include <unistd.h> + +#ifndef ETH_MAX_MTU +#define ETH_MAX_MTU 0xFFFFU +#endif + +#ifndef UDP_SEGMENT +#define UDP_SEGMENT 103 +#endif + +#ifndef SO_ZEROCOPY +#define SO_ZEROCOPY 60 +#endif + +#ifndef MSG_ZEROCOPY +#define MSG_ZEROCOPY 0x4000000 +#endif + +#define NUM_PKT 100 + +static bool cfg_cache_trash; +static int cfg_cpu = -1; +static int cfg_connected = true; +static int cfg_family = PF_UNSPEC; +static uint16_t cfg_mss; +static int cfg_payload_len = (1472 * 42); +static int cfg_port = 8000; +static int cfg_runtime_ms = -1; +static bool cfg_segment; +static bool cfg_sendmmsg; +static bool cfg_tcp; +static bool cfg_zerocopy; + +static socklen_t cfg_alen; +static struct sockaddr_storage cfg_dst_addr; + +static bool interrupted; +static char buf[NUM_PKT][ETH_MAX_MTU]; + +static void sigint_handler(int signum) +{ + if (signum == SIGINT) + interrupted = true; +} + +static unsigned long gettimeofday_ms(void) +{ + struct timeval tv; + + gettimeofday(&tv, NULL); + return (tv.tv_sec * 1000) + (tv.tv_usec / 1000); +} + +static int set_cpu(int cpu) +{ + cpu_set_t mask; + + CPU_ZERO(&mask); + CPU_SET(cpu, &mask); + if (sched_setaffinity(0, sizeof(mask), &mask)) + error(1, 0, "setaffinity %d", cpu); + + return 0; +} + +static void setup_sockaddr(int domain, const char *str_addr, void *sockaddr) +{ + struct sockaddr_in6 *addr6 = (void *) sockaddr; + struct sockaddr_in *addr4 = (void *) sockaddr; + + switch (domain) { + case PF_INET: + addr4->sin_family = AF_INET; + addr4->sin_port = htons(cfg_port); + if (inet_pton(AF_INET, str_addr, &(addr4->sin_addr)) != 1) + error(1, 0, "ipv4 parse error: %s", str_addr); + break; + case PF_INET6: + addr6->sin6_family = AF_INET6; + addr6->sin6_port = htons(cfg_port); + if (inet_pton(AF_INET6, str_addr, &(addr6->sin6_addr)) != 1) + error(1, 0, "ipv6 parse error: %s", str_addr); + break; + default: + error(1, 0, "illegal domain"); + } +} + +static void flush_zerocopy(int fd) +{ + struct msghdr msg = {0}; /* flush */ + int ret; + + while (1) { + ret = recvmsg(fd, &msg, MSG_ERRQUEUE); + if (ret == -1 && errno == EAGAIN) + break; + if (ret == -1) + error(1, errno, "errqueue"); + if (msg.msg_flags != (MSG_ERRQUEUE | MSG_CTRUNC)) + error(1, 0, "errqueue: flags 0x%x\n", msg.msg_flags); + msg.msg_flags = 0; + } +} + +static int send_tcp(int fd, char *data) +{ + int ret, done = 0, count = 0; + + while (done < cfg_payload_len) { + ret = send(fd, data + done, cfg_payload_len - done, + cfg_zerocopy ? MSG_ZEROCOPY : 0); + if (ret == -1) + error(1, errno, "write"); + + done += ret; + count++; + } + + return count; +} + +static int send_udp(int fd, char *data) +{ + int ret, total_len, len, count = 0; + + total_len = cfg_payload_len; + + while (total_len) { + len = total_len < cfg_mss ? total_len : cfg_mss; + + ret = sendto(fd, data, len, cfg_zerocopy ? MSG_ZEROCOPY : 0, + cfg_connected ? NULL : (void *)&cfg_dst_addr, + cfg_connected ? 0 : cfg_alen); + if (ret == -1) + error(1, errno, "write"); + if (ret != len) + error(1, errno, "write: %uB != %uB\n", ret, len); + + total_len -= len; + count++; + } + + return count; +} + +static int send_udp_sendmmsg(int fd, char *data) +{ + const int max_nr_msg = ETH_MAX_MTU / ETH_DATA_LEN; + struct mmsghdr mmsgs[max_nr_msg]; + struct iovec iov[max_nr_msg]; + unsigned int off = 0, left; + int i = 0, ret; + + memset(mmsgs, 0, sizeof(mmsgs)); + + left = cfg_payload_len; + while (left) { + if (i == max_nr_msg) + error(1, 0, "sendmmsg: exceeds max_nr_msg"); + + iov[i].iov_base = data + off; + iov[i].iov_len = cfg_mss < left ? cfg_mss : left; + + mmsgs[i].msg_hdr.msg_iov = iov + i; + mmsgs[i].msg_hdr.msg_iovlen = 1; + + off += iov[i].iov_len; + left -= iov[i].iov_len; + i++; + } + + ret = sendmmsg(fd, mmsgs, i, cfg_zerocopy ? MSG_ZEROCOPY : 0); + if (ret == -1) + error(1, errno, "sendmmsg"); + + return ret; +} + +static void send_udp_segment_cmsg(struct cmsghdr *cm) +{ + uint16_t *valp; + + cm->cmsg_level = SOL_UDP; + cm->cmsg_type = UDP_SEGMENT; + cm->cmsg_len = CMSG_LEN(sizeof(cfg_mss)); + valp = (void *)CMSG_DATA(cm); + *valp = cfg_mss; +} + +static int send_udp_segment(int fd, char *data) +{ + char control[CMSG_SPACE(sizeof(cfg_mss))] = {0}; + struct msghdr msg = {0}; + struct iovec iov = {0}; + int ret; + + iov.iov_base = data; + iov.iov_len = cfg_payload_len; + + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + + msg.msg_control = control; + msg.msg_controllen = sizeof(control); + send_udp_segment_cmsg(CMSG_FIRSTHDR(&msg)); + + msg.msg_name = (void *)&cfg_dst_addr; + msg.msg_namelen = cfg_alen; + + ret = sendmsg(fd, &msg, cfg_zerocopy ? MSG_ZEROCOPY : 0); + if (ret == -1) + error(1, errno, "sendmsg"); + if (ret != iov.iov_len) + error(1, 0, "sendmsg: %u != %lu\n", ret, iov.iov_len); + + return 1; +} + +static void usage(const char *filepath) +{ + error(1, 0, "Usage: %s [-46cmStuz] [-C cpu] [-D dst ip] [-l secs] [-p port] [-s sendsize]", + filepath); +} + +static void parse_opts(int argc, char **argv) +{ + const char *bind_addr = NULL; + int max_len, hdrlen; + int c; + + while ((c = getopt(argc, argv, "46cC:D:l:mp:s:Stuz")) != -1) { + switch (c) { + case '4': + if (cfg_family != PF_UNSPEC) + error(1, 0, "Pass one of -4 or -6"); + cfg_family = PF_INET; + cfg_alen = sizeof(struct sockaddr_in); + break; + case '6': + if (cfg_family != PF_UNSPEC) + error(1, 0, "Pass one of -4 or -6"); + cfg_family = PF_INET6; + cfg_alen = sizeof(struct sockaddr_in6); + break; + case 'c': + cfg_cache_trash = true; + break; + case 'C': + cfg_cpu = strtol(optarg, NULL, 0); + break; + case 'D': + bind_addr = optarg; + break; + case 'l': + cfg_runtime_ms = strtoul(optarg, NULL, 10) * 1000; + break; + case 'm': + cfg_sendmmsg = true; + break; + case 'p': + cfg_port = strtoul(optarg, NULL, 0); + break; + case 's': + cfg_payload_len = strtoul(optarg, NULL, 0); + break; + case 'S': + cfg_segment = true; + break; + case 't': + cfg_tcp = true; + break; + case 'u': + cfg_connected = false; + break; + case 'z': + cfg_zerocopy = true; + break; + } + } + + if (!bind_addr) + bind_addr = cfg_family == PF_INET6 ? "::" : "0.0.0.0"; + + setup_sockaddr(cfg_family, bind_addr, &cfg_dst_addr); + + if (optind != argc) + usage(argv[0]); + + if (cfg_family == PF_UNSPEC) + error(1, 0, "must pass one of -4 or -6"); + if (cfg_tcp && !cfg_connected) + error(1, 0, "connectionless tcp makes no sense"); + if (cfg_segment && cfg_sendmmsg) + error(1, 0, "cannot combine segment offload and sendmmsg"); + + if (cfg_family == PF_INET) + hdrlen = sizeof(struct iphdr) + sizeof(struct udphdr); + else + hdrlen = sizeof(struct ip6_hdr) + sizeof(struct udphdr); + + cfg_mss = ETH_DATA_LEN - hdrlen; + max_len = ETH_MAX_MTU - hdrlen; + + if (cfg_payload_len > max_len) + error(1, 0, "payload length %u exceeds max %u", + cfg_payload_len, max_len); +} + +static void set_pmtu_discover(int fd, bool is_ipv4) +{ + int level, name, val; + + if (is_ipv4) { + level = SOL_IP; + name = IP_MTU_DISCOVER; + val = IP_PMTUDISC_DO; + } else { + level = SOL_IPV6; + name = IPV6_MTU_DISCOVER; + val = IPV6_PMTUDISC_DO; + } + + if (setsockopt(fd, level, name, &val, sizeof(val))) + error(1, errno, "setsockopt path mtu"); +} + +int main(int argc, char **argv) +{ + unsigned long num_msgs, num_sends; + unsigned long tnow, treport, tstop; + int fd, i, val; + + parse_opts(argc, argv); + + if (cfg_cpu > 0) + set_cpu(cfg_cpu); + + for (i = 0; i < sizeof(buf[0]); i++) + buf[0][i] = 'a' + (i % 26); + for (i = 1; i < NUM_PKT; i++) + memcpy(buf[i], buf[0], sizeof(buf[0])); + + signal(SIGINT, sigint_handler); + + fd = socket(cfg_family, cfg_tcp ? SOCK_STREAM : SOCK_DGRAM, 0); + if (fd == -1) + error(1, errno, "socket"); + + if (cfg_zerocopy) { + val = 1; + if (setsockopt(fd, SOL_SOCKET, SO_ZEROCOPY, &val, sizeof(val))) + error(1, errno, "setsockopt zerocopy"); + } + + if (cfg_connected && + connect(fd, (void *)&cfg_dst_addr, cfg_alen)) + error(1, errno, "connect"); + + if (cfg_segment) + set_pmtu_discover(fd, cfg_family == PF_INET); + + num_msgs = num_sends = 0; + tnow = gettimeofday_ms(); + tstop = tnow + cfg_runtime_ms; + treport = tnow + 1000; + + i = 0; + do { + if (cfg_tcp) + num_sends += send_tcp(fd, buf[i]); + else if (cfg_segment) + num_sends += send_udp_segment(fd, buf[i]); + else if (cfg_sendmmsg) + num_sends += send_udp_sendmmsg(fd, buf[i]); + else + num_sends += send_udp(fd, buf[i]); + num_msgs++; + + if (cfg_zerocopy && ((num_msgs & 0xF) == 0)) + flush_zerocopy(fd); + + tnow = gettimeofday_ms(); + if (tnow > treport) { + fprintf(stderr, + "%s tx: %6lu MB/s %8lu calls/s %6lu msg/s\n", + cfg_tcp ? "tcp" : "udp", + (num_msgs * cfg_payload_len) >> 20, + num_sends, num_msgs); + num_msgs = num_sends = 0; + treport = tnow + 1000; + } + + /* cold cache when writing buffer */ + if (cfg_cache_trash) + i = ++i < NUM_PKT ? i : 0; + + } while (!interrupted && (cfg_runtime_ms == -1 || tnow < tstop)); + + if (close(fd)) + error(1, errno, "close"); + + return 0; +} |