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1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3# Copyright(c) 2020 Intel Corporation, Weqaar Janjua <weqaar.a.janjua@intel.com>
4
5# AF_XDP selftests based on veth
6#
7# End-to-end AF_XDP over Veth test
8#
9# Topology:
10# ---------
11# -----------
12# _ | Process | _
13# / ----------- \
14# / | \
15# / | \
16# ----------- | -----------
17# | Thread1 | | | Thread2 |
18# ----------- | -----------
19# | | |
20# ----------- | -----------
21# | xskX | | | xskY |
22# ----------- | -----------
23# | | |
24# ----------- | ----------
25# | vethX | --------- | vethY |
26# ----------- peer ----------
27#
28# AF_XDP is an address family optimized for high performance packet processing,
29# it is XDP’s user-space interface.
30#
31# An AF_XDP socket is linked to a single UMEM which is a region of virtual
32# contiguous memory, divided into equal-sized frames.
33#
34# Refer to AF_XDP Kernel Documentation for detailed information:
35# https://www.kernel.org/doc/html/latest/networking/af_xdp.html
36#
37# Prerequisites setup by script:
38#
39# Set up veth interfaces as per the topology shown ^^:
40# * setup two veth interfaces
41# ** veth<xxxx>
42# ** veth<yyyy>
43# *** xxxx and yyyy are randomly generated 4 digit numbers used to avoid
44# conflict with any existing interface
45# * tests the veth and xsk layers of the topology
46#
47# See the source xskxceiver.c for information on each test
48#
49# Kernel configuration:
50# ---------------------
51# See "config" file for recommended kernel config options.
52#
53# Turn on XDP sockets and veth support when compiling i.e.
54# Networking support -->
55# Networking options -->
56# [ * ] XDP sockets
57#
58# Executing Tests:
59# ----------------
60# Must run with CAP_NET_ADMIN capability.
61#
62# Run:
63# sudo ./test_xsk.sh
64#
65# If running from kselftests:
66# sudo make run_tests
67#
68# Run with verbose output:
69# sudo ./test_xsk.sh -v
70#
71# Set up veth interfaces and leave them up so xskxceiver can be launched in a debugger:
72# sudo ./test_xsk.sh -d
73#
74# Run test suite for physical device in loopback mode
75# sudo ./test_xsk.sh -i IFACE
76#
77# Run test suite in a specific mode only [skb,drv,zc]
78# sudo ./test_xsk.sh -m MODE
79#
80# List available tests
81# ./test_xsk.sh -l
82#
83# Run a specific test from the test suite
84# sudo ./test_xsk.sh -t TEST_NAME
85#
86# Display the available command line options
87# ./test_xsk.sh -h
88
89. xsk_prereqs.sh
90
91ETH=""
92
93while getopts "vi:dm:lt:h" flag
94do
95 case "${flag}" in
96 v) verbose=1;;
97 d) debug=1;;
98 i) ETH=${OPTARG};;
99 m) MODE=${OPTARG};;
100 l) list=1;;
101 t) TEST=${OPTARG};;
102 h) help=1;;
103 esac
104done
105
106TEST_NAME="PREREQUISITES"
107
108URANDOM=/dev/urandom
109[ ! -e "${URANDOM}" ] && { echo "${URANDOM} not found. Skipping tests."; test_exit $ksft_fail; }
110
111VETH0_POSTFIX=$(cat ${URANDOM} | tr -dc '0-9' | fold -w 256 | head -n 1 | head --bytes 4)
112VETH0=ve${VETH0_POSTFIX}
113VETH1_POSTFIX=$(cat ${URANDOM} | tr -dc '0-9' | fold -w 256 | head -n 1 | head --bytes 4)
114VETH1=ve${VETH1_POSTFIX}
115MTU=1500
116
117trap ctrl_c INT
118
119function ctrl_c() {
120 cleanup_exit ${VETH0} ${VETH1}
121 exit 1
122}
123
124setup_vethPairs() {
125 if [[ $verbose -eq 1 ]]; then
126 echo "setting up ${VETH0}"
127 fi
128 ip link add ${VETH0} numtxqueues 4 numrxqueues 4 type veth peer name ${VETH1} numtxqueues 4 numrxqueues 4
129 if [ -f /proc/net/if_inet6 ]; then
130 echo 1 > /proc/sys/net/ipv6/conf/${VETH0}/disable_ipv6
131 echo 1 > /proc/sys/net/ipv6/conf/${VETH1}/disable_ipv6
132 fi
133 if [[ $verbose -eq 1 ]]; then
134 echo "setting up ${VETH1}"
135 fi
136
137 if [[ $busy_poll -eq 1 ]]; then
138 echo 2 > /sys/class/net/${VETH0}/napi_defer_hard_irqs
139 echo 200000 > /sys/class/net/${VETH0}/gro_flush_timeout
140 echo 2 > /sys/class/net/${VETH1}/napi_defer_hard_irqs
141 echo 200000 > /sys/class/net/${VETH1}/gro_flush_timeout
142 fi
143
144 ip link set ${VETH1} mtu ${MTU}
145 ip link set ${VETH0} mtu ${MTU}
146 ip link set ${VETH1} up
147 ip link set ${VETH0} up
148}
149
150if [[ $list -eq 1 ]]; then
151 ./${XSKOBJ} -l
152 exit
153fi
154
155if [[ $help -eq 1 ]]; then
156 ./${XSKOBJ}
157 exit
158fi
159
160if [ ! -z $ETH ]; then
161 VETH0=${ETH}
162 VETH1=${ETH}
163else
164 validate_root_exec
165 validate_veth_support ${VETH0}
166 validate_ip_utility
167 setup_vethPairs
168
169 retval=$?
170 if [ $retval -ne 0 ]; then
171 test_status $retval "${TEST_NAME}"
172 cleanup_exit ${VETH0} ${VETH1}
173 exit $retval
174 fi
175fi
176
177
178if [[ $verbose -eq 1 ]]; then
179 ARGS+="-v "
180fi
181
182if [ -n "$MODE" ]; then
183 ARGS+="-m ${MODE} "
184fi
185
186if [ -n "$TEST" ]; then
187 ARGS+="-t ${TEST} "
188fi
189
190retval=$?
191test_status $retval "${TEST_NAME}"
192
193## START TESTS
194
195statusList=()
196
197TEST_NAME="XSK_SELFTESTS_${VETH0}_SOFTIRQ"
198
199if [[ $debug -eq 1 ]]; then
200 echo "-i" ${VETH0} "-i" ${VETH1}
201 exit
202fi
203
204exec_xskxceiver
205
206if [ -z $ETH ]; then
207 cleanup_exit ${VETH0} ${VETH1}
208else
209 cleanup_iface ${ETH} ${MTU}
210fi
211
212if [[ $list -eq 1 ]]; then
213 exit
214fi
215
216TEST_NAME="XSK_SELFTESTS_${VETH0}_BUSY_POLL"
217busy_poll=1
218
219if [ -z $ETH ]; then
220 setup_vethPairs
221fi
222exec_xskxceiver
223
224## END TESTS
225
226if [ -z $ETH ]; then
227 cleanup_exit ${VETH0} ${VETH1}
228else
229 cleanup_iface ${ETH} ${MTU}
230fi
231
232failures=0
233echo -e "\nSummary:"
234for i in "${!statusList[@]}"
235do
236 if [ ${statusList[$i]} -ne 0 ]; then
237 test_status ${statusList[$i]} ${nameList[$i]}
238 failures=1
239 fi
240done
241
242if [ $failures -eq 0 ]; then
243 echo "All tests successful!"
244fi
1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3# Copyright(c) 2020 Intel Corporation, Weqaar Janjua <weqaar.a.janjua@intel.com>
4
5# AF_XDP selftests based on veth
6#
7# End-to-end AF_XDP over Veth test
8#
9# Topology:
10# ---------
11# -----------
12# _ | Process | _
13# / ----------- \
14# / | \
15# / | \
16# ----------- | -----------
17# | Thread1 | | | Thread2 |
18# ----------- | -----------
19# | | |
20# ----------- | -----------
21# | xskX | | | xskY |
22# ----------- | -----------
23# | | |
24# ----------- | ----------
25# | vethX | --------- | vethY |
26# ----------- peer ----------
27# | | |
28# namespaceX | namespaceY
29#
30# AF_XDP is an address family optimized for high performance packet processing,
31# it is XDP’s user-space interface.
32#
33# An AF_XDP socket is linked to a single UMEM which is a region of virtual
34# contiguous memory, divided into equal-sized frames.
35#
36# Refer to AF_XDP Kernel Documentation for detailed information:
37# https://www.kernel.org/doc/html/latest/networking/af_xdp.html
38#
39# Prerequisites setup by script:
40#
41# Set up veth interfaces as per the topology shown ^^:
42# * setup two veth interfaces and one namespace
43# ** veth<xxxx> in root namespace
44# ** veth<yyyy> in af_xdp<xxxx> namespace
45# ** namespace af_xdp<xxxx>
46# *** xxxx and yyyy are randomly generated 4 digit numbers used to avoid
47# conflict with any existing interface
48# * tests the veth and xsk layers of the topology
49#
50# See the source xskxceiver.c for information on each test
51#
52# Kernel configuration:
53# ---------------------
54# See "config" file for recommended kernel config options.
55#
56# Turn on XDP sockets and veth support when compiling i.e.
57# Networking support -->
58# Networking options -->
59# [ * ] XDP sockets
60#
61# Executing Tests:
62# ----------------
63# Must run with CAP_NET_ADMIN capability.
64#
65# Run:
66# sudo ./test_xsk.sh
67#
68# If running from kselftests:
69# sudo make run_tests
70#
71# Run with verbose output:
72# sudo ./test_xsk.sh -v
73#
74# Run and dump packet contents:
75# sudo ./test_xsk.sh -D
76#
77# Run test suite for physical device in loopback mode
78# sudo ./test_xsk.sh -i IFACE
79
80. xsk_prereqs.sh
81
82ETH=""
83
84while getopts "vDi:" flag
85do
86 case "${flag}" in
87 v) verbose=1;;
88 D) dump_pkts=1;;
89 i) ETH=${OPTARG};;
90 esac
91done
92
93TEST_NAME="PREREQUISITES"
94
95URANDOM=/dev/urandom
96[ ! -e "${URANDOM}" ] && { echo "${URANDOM} not found. Skipping tests."; test_exit $ksft_fail; }
97
98VETH0_POSTFIX=$(cat ${URANDOM} | tr -dc '0-9' | fold -w 256 | head -n 1 | head --bytes 4)
99VETH0=ve${VETH0_POSTFIX}
100VETH1_POSTFIX=$(cat ${URANDOM} | tr -dc '0-9' | fold -w 256 | head -n 1 | head --bytes 4)
101VETH1=ve${VETH1_POSTFIX}
102NS0=root
103NS1=af_xdp${VETH1_POSTFIX}
104MTU=1500
105
106trap ctrl_c INT
107
108function ctrl_c() {
109 cleanup_exit ${VETH0} ${VETH1} ${NS1}
110 exit 1
111}
112
113setup_vethPairs() {
114 if [[ $verbose -eq 1 ]]; then
115 echo "setting up ${VETH0}: namespace: ${NS0}"
116 fi
117 ip netns add ${NS1}
118 ip link add ${VETH0} numtxqueues 4 numrxqueues 4 type veth peer name ${VETH1} numtxqueues 4 numrxqueues 4
119 if [ -f /proc/net/if_inet6 ]; then
120 echo 1 > /proc/sys/net/ipv6/conf/${VETH0}/disable_ipv6
121 fi
122 if [[ $verbose -eq 1 ]]; then
123 echo "setting up ${VETH1}: namespace: ${NS1}"
124 fi
125
126 if [[ $busy_poll -eq 1 ]]; then
127 echo 2 > /sys/class/net/${VETH0}/napi_defer_hard_irqs
128 echo 200000 > /sys/class/net/${VETH0}/gro_flush_timeout
129 echo 2 > /sys/class/net/${VETH1}/napi_defer_hard_irqs
130 echo 200000 > /sys/class/net/${VETH1}/gro_flush_timeout
131 fi
132
133 ip link set ${VETH1} netns ${NS1}
134 ip netns exec ${NS1} ip link set ${VETH1} mtu ${MTU}
135 ip link set ${VETH0} mtu ${MTU}
136 ip netns exec ${NS1} ip link set ${VETH1} up
137 ip netns exec ${NS1} ip link set dev lo up
138 ip link set ${VETH0} up
139}
140
141if [ ! -z $ETH ]; then
142 VETH0=${ETH}
143 VETH1=${ETH}
144 NS1=""
145else
146 validate_root_exec
147 validate_veth_support ${VETH0}
148 validate_ip_utility
149 setup_vethPairs
150
151 retval=$?
152 if [ $retval -ne 0 ]; then
153 test_status $retval "${TEST_NAME}"
154 cleanup_exit ${VETH0} ${VETH1} ${NS1}
155 exit $retval
156 fi
157fi
158
159
160if [[ $verbose -eq 1 ]]; then
161 ARGS+="-v "
162fi
163
164if [[ $dump_pkts -eq 1 ]]; then
165 ARGS="-D "
166fi
167
168retval=$?
169test_status $retval "${TEST_NAME}"
170
171## START TESTS
172
173statusList=()
174
175TEST_NAME="XSK_SELFTESTS_${VETH0}_SOFTIRQ"
176
177exec_xskxceiver
178
179if [ -z $ETH ]; then
180 cleanup_exit ${VETH0} ${VETH1} ${NS1}
181fi
182TEST_NAME="XSK_SELFTESTS_${VETH0}_BUSY_POLL"
183busy_poll=1
184
185if [ -z $ETH ]; then
186 setup_vethPairs
187fi
188exec_xskxceiver
189
190## END TESTS
191
192if [ -z $ETH ]; then
193 cleanup_exit ${VETH0} ${VETH1} ${NS1}
194fi
195
196failures=0
197echo -e "\nSummary:"
198for i in "${!statusList[@]}"
199do
200 if [ ${statusList[$i]} -ne 0 ]; then
201 test_status ${statusList[$i]} ${nameList[$i]}
202 failures=1
203 fi
204done
205
206if [ $failures -eq 0 ]; then
207 echo "All tests successful!"
208fi