blob: 4e3ec38cbe68c02d3ca2783deb689cae76766d8a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
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
|
