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