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Diffstat (limited to '')
| -rwxr-xr-x | tools/testing/selftests/bpf/test_xsk.sh | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/test_xsk.sh b/tools/testing/selftests/bpf/test_xsk.sh new file mode 100755 index 000000000..4e3ec38cb --- /dev/null +++ b/tools/testing/selftests/bpf/test_xsk.sh @@ -0,0 +1,209 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright(c) 2020 Intel Corporation, Weqaar Janjua <weqaar.a.janjua@intel.com> + +# AF_XDP selftests based on veth +# +# End-to-end AF_XDP over Veth test +# +# Topology: +# --------- +# ----------- +# _ | Process | _ +# / ----------- \ +# / | \ +# / | \ +# ----------- | ----------- +# | Thread1 | | | Thread2 | +# ----------- | ----------- +# | | | +# ----------- | ----------- +# | xskX | | | xskY | +# ----------- | ----------- +# | | | +# ----------- | ---------- +# | vethX | --------- | vethY | +# ----------- peer ---------- +# | | | +# namespaceX | namespaceY +# +# AF_XDP is an address family optimized for high performance packet processing, +# it is XDP’s user-space interface. +# +# An AF_XDP socket is linked to a single UMEM which is a region of virtual +# contiguous memory, divided into equal-sized frames. +# +# Refer to AF_XDP Kernel Documentation for detailed information: +# https://www.kernel.org/doc/html/latest/networking/af_xdp.html +# +# Prerequisites setup by script: +# +# Set up veth interfaces as per the topology shown ^^: +# * setup two veth interfaces and one namespace +# ** veth<xxxx> in root namespace +# ** veth<yyyy> in af_xdp<xxxx> namespace +# ** namespace af_xdp<xxxx> +# *** xxxx and yyyy are randomly generated 4 digit numbers used to avoid +# conflict with any existing interface +# * tests the veth and xsk layers of the topology +# +# See the source xskxceiver.c for information on each test +# +# Kernel configuration: +# --------------------- +# See "config" file for recommended kernel config options. +# +# Turn on XDP sockets and veth support when compiling i.e. +# Networking support --> +# Networking options --> +# [ * ] XDP sockets +# +# Executing Tests: +# ---------------- +# Must run with CAP_NET_ADMIN capability. +# +# Run: +# sudo ./test_xsk.sh +# +# If running from kselftests: +# sudo make run_tests +# +# Run with verbose output: +# sudo ./test_xsk.sh -v +# +# Run and dump packet contents: +# sudo ./test_xsk.sh -D +# +# Run test suite for physical device in loopback mode +# sudo ./test_xsk.sh -i IFACE + +. xsk_prereqs.sh + +ETH="" + +while getopts "vDi:" flag +do + case "${flag}" in + v) verbose=1;; + D) dump_pkts=1;; + i) ETH=${OPTARG};; + esac +done + +TEST_NAME="PREREQUISITES" + +URANDOM=/dev/urandom +[ ! -e "${URANDOM}" ] && { echo "${URANDOM} not found. Skipping tests."; test_exit $ksft_fail; } + +VETH0_POSTFIX=$(cat ${URANDOM} | tr -dc '0-9' | fold -w 256 | head -n 1 | head --bytes 4) +VETH0=ve${VETH0_POSTFIX} +VETH1_POSTFIX=$(cat ${URANDOM} | tr -dc '0-9' | fold -w 256 | head -n 1 | head --bytes 4) +VETH1=ve${VETH1_POSTFIX} +NS0=root +NS1=af_xdp${VETH1_POSTFIX} +MTU=1500 + +trap ctrl_c INT + +function ctrl_c() { + cleanup_exit ${VETH0} ${VETH1} ${NS1} + exit 1 +} + +setup_vethPairs() { + if [[ $verbose -eq 1 ]]; then + echo "setting up ${VETH0}: namespace: ${NS0}" + fi + ip netns add ${NS1} + ip link add ${VETH0} numtxqueues 4 numrxqueues 4 type veth peer name ${VETH1} numtxqueues 4 numrxqueues 4 + if [ -f /proc/net/if_inet6 ]; then + echo 1 > /proc/sys/net/ipv6/conf/${VETH0}/disable_ipv6 + echo 1 > /proc/sys/net/ipv6/conf/${VETH1}/disable_ipv6 + fi + if [[ $verbose -eq 1 ]]; then + echo "setting up ${VETH1}: namespace: ${NS1}" + fi + + if [[ $busy_poll -eq 1 ]]; then + echo 2 > /sys/class/net/${VETH0}/napi_defer_hard_irqs + echo 200000 > /sys/class/net/${VETH0}/gro_flush_timeout + echo 2 > /sys/class/net/${VETH1}/napi_defer_hard_irqs + echo 200000 > /sys/class/net/${VETH1}/gro_flush_timeout + fi + + ip link set ${VETH1} netns ${NS1} + ip netns exec ${NS1} ip link set ${VETH1} mtu ${MTU} + ip link set ${VETH0} mtu ${MTU} + ip netns exec ${NS1} ip link set ${VETH1} up + ip netns exec ${NS1} ip link set dev lo up + ip link set ${VETH0} up +} + +if [ ! -z $ETH ]; then + VETH0=${ETH} + VETH1=${ETH} + NS1="" +else + validate_root_exec + validate_veth_support ${VETH0} + validate_ip_utility + setup_vethPairs + + retval=$? + if [ $retval -ne 0 ]; then + test_status $retval "${TEST_NAME}" + cleanup_exit ${VETH0} ${VETH1} ${NS1} + exit $retval + fi +fi + + +if [[ $verbose -eq 1 ]]; then + ARGS+="-v " +fi + +if [[ $dump_pkts -eq 1 ]]; then + ARGS="-D " +fi + +retval=$? +test_status $retval "${TEST_NAME}" + +## START TESTS + +statusList=() + +TEST_NAME="XSK_SELFTESTS_${VETH0}_SOFTIRQ" + +exec_xskxceiver + +if [ -z $ETH ]; then + cleanup_exit ${VETH0} ${VETH1} ${NS1} +fi +TEST_NAME="XSK_SELFTESTS_${VETH0}_BUSY_POLL" +busy_poll=1 + +if [ -z $ETH ]; then + setup_vethPairs +fi +exec_xskxceiver + +## END TESTS + +if [ -z $ETH ]; then + cleanup_exit ${VETH0} ${VETH1} ${NS1} +fi + +failures=0 +echo -e "\nSummary:" +for i in "${!statusList[@]}" +do + if [ ${statusList[$i]} -ne 0 ]; then + test_status ${statusList[$i]} ${nameList[$i]} + failures=1 + fi +done + +if [ $failures -eq 0 ]; then + echo "All tests successful!" +fi |