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>
>> 46 # * create a spec file veth.spec that includes this run-time configuration
43 # *** xxxx and yyyy are randomly generated 4 47 # *** xxxx and yyyy are randomly generated 4 digit numbers used to avoid
44 # conflict with any existing interface 48 # conflict with any existing interface
45 # * tests the veth and xsk layers of the top 49 # * tests the veth and xsk layers of the topology
46 # 50 #
47 # See the source xskxceiver.c for information !! 51 # See the source xdpxceiver.c for information on each test
48 # 52 #
49 # Kernel configuration: 53 # Kernel configuration:
50 # --------------------- 54 # ---------------------
51 # See "config" file for recommended kernel con 55 # See "config" file for recommended kernel config options.
52 # 56 #
53 # Turn on XDP sockets and veth support when co 57 # Turn on XDP sockets and veth support when compiling i.e.
54 # Networking support --> 58 # Networking support -->
55 # Networking options --> 59 # Networking options -->
56 # [ * ] XDP sockets 60 # [ * ] XDP sockets
57 # 61 #
58 # Executing Tests: 62 # Executing Tests:
59 # ---------------- 63 # ----------------
60 # Must run with CAP_NET_ADMIN capability. 64 # Must run with CAP_NET_ADMIN capability.
61 # 65 #
62 # Run: 66 # Run:
63 # sudo ./test_xsk.sh 67 # sudo ./test_xsk.sh
64 # 68 #
65 # If running from kselftests: 69 # If running from kselftests:
66 # sudo make run_tests 70 # sudo make run_tests
67 # 71 #
68 # Run with verbose output: 72 # Run with verbose output:
69 # sudo ./test_xsk.sh -v 73 # sudo ./test_xsk.sh -v
70 # 74 #
71 # Set up veth interfaces and leave them up so !! 75 # Run and dump packet contents:
72 # sudo ./test_xsk.sh -d !! 76 # 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 77
89 . xsk_prereqs.sh 78 . xsk_prereqs.sh
90 79
91 ETH="" !! 80 while getopts "cvD" flag
92 <<
93 while getopts "vi:dm:lt:h" flag <<
94 do 81 do
95 case "${flag}" in 82 case "${flag}" in
96 v) verbose=1;; 83 v) verbose=1;;
97 d) debug=1;; !! 84 D) dump_pkts=1;;
98 i) ETH=${OPTARG};; <<
99 m) MODE=${OPTARG};; <<
100 l) list=1;; <<
101 t) TEST=${OPTARG};; <<
102 h) help=1;; <<
103 esac 85 esac
104 done 86 done
105 87
106 TEST_NAME="PREREQUISITES" 88 TEST_NAME="PREREQUISITES"
107 89
108 URANDOM=/dev/urandom 90 URANDOM=/dev/urandom
109 [ ! -e "${URANDOM}" ] && { echo "${URANDOM} no !! 91 [ ! -e "${URANDOM}" ] && { echo "${URANDOM} not found. Skipping tests."; test_exit 1 1; }
110 92
111 VETH0_POSTFIX=$(cat ${URANDOM} | tr -dc '0-9' 93 VETH0_POSTFIX=$(cat ${URANDOM} | tr -dc '0-9' | fold -w 256 | head -n 1 | head --bytes 4)
112 VETH0=ve${VETH0_POSTFIX} 94 VETH0=ve${VETH0_POSTFIX}
113 VETH1_POSTFIX=$(cat ${URANDOM} | tr -dc '0-9' 95 VETH1_POSTFIX=$(cat ${URANDOM} | tr -dc '0-9' | fold -w 256 | head -n 1 | head --bytes 4)
114 VETH1=ve${VETH1_POSTFIX} 96 VETH1=ve${VETH1_POSTFIX}
>> 97 NS0=root
>> 98 NS1=af_xdp${VETH1_POSTFIX}
115 MTU=1500 99 MTU=1500
116 100
117 trap ctrl_c INT <<
118 <<
119 function ctrl_c() { <<
120 cleanup_exit ${VETH0} ${VETH1} <<
121 exit 1 <<
122 } <<
123 <<
124 setup_vethPairs() { 101 setup_vethPairs() {
125 if [[ $verbose -eq 1 ]]; then 102 if [[ $verbose -eq 1 ]]; then
126 echo "setting up ${VETH0}" !! 103 echo "setting up ${VETH0}: namespace: ${NS0}"
127 fi 104 fi
>> 105 ip netns add ${NS1}
128 ip link add ${VETH0} numtxqueues 4 num 106 ip link add ${VETH0} numtxqueues 4 numrxqueues 4 type veth peer name ${VETH1} numtxqueues 4 numrxqueues 4
129 if [ -f /proc/net/if_inet6 ]; then 107 if [ -f /proc/net/if_inet6 ]; then
130 echo 1 > /proc/sys/net/ipv6/co 108 echo 1 > /proc/sys/net/ipv6/conf/${VETH0}/disable_ipv6
131 echo 1 > /proc/sys/net/ipv6/co 109 echo 1 > /proc/sys/net/ipv6/conf/${VETH1}/disable_ipv6
132 fi 110 fi
133 if [[ $verbose -eq 1 ]]; then 111 if [[ $verbose -eq 1 ]]; then
134 echo "setting up ${VETH1}" !! 112 echo "setting up ${VETH1}: namespace: ${NS1}"
135 fi <<
136 <<
137 if [[ $busy_poll -eq 1 ]]; then <<
138 echo 2 > /sys/class/net/${VETH <<
139 echo 200000 > /sys/class/net/$ <<
140 echo 2 > /sys/class/net/${VETH <<
141 echo 200000 > /sys/class/net/$ <<
142 fi 113 fi
143 !! 114 ip link set ${VETH1} netns ${NS1}
144 ip link set ${VETH1} mtu ${MTU} !! 115 ip netns exec ${NS1} ip link set ${VETH1} mtu ${MTU}
145 ip link set ${VETH0} mtu ${MTU} 116 ip link set ${VETH0} mtu ${MTU}
146 ip link set ${VETH1} up !! 117 ip netns exec ${NS1} ip link set ${VETH1} up
>> 118 ip netns exec ${NS1} ip link set dev lo up
147 ip link set ${VETH0} up 119 ip link set ${VETH0} up
148 } 120 }
149 121
150 if [[ $list -eq 1 ]]; then !! 122 validate_root_exec
151 ./${XSKOBJ} -l !! 123 validate_veth_support ${VETH0}
152 exit !! 124 validate_ip_utility
153 fi !! 125 setup_vethPairs
154 126
155 if [[ $help -eq 1 ]]; then !! 127 retval=$?
156 ./${XSKOBJ} !! 128 if [ $retval -ne 0 ]; then
157 exit !! 129 test_status $retval "${TEST_NAME}"
>> 130 cleanup_exit ${VETH0} ${VETH1} ${NS1}
>> 131 exit $retval
158 fi 132 fi
159 133
160 if [ ! -z $ETH ]; then !! 134 echo "${VETH0}:${VETH1},${NS1}" > ${SPECFILE}
161 VETH0=${ETH} <<
162 VETH1=${ETH} <<
163 else <<
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_NA <<
172 cleanup_exit ${VETH0} ${VETH1} <<
173 exit $retval <<
174 fi <<
175 fi <<
176 135
>> 136 validate_veth_spec_file
177 137
178 if [[ $verbose -eq 1 ]]; then 138 if [[ $verbose -eq 1 ]]; then
179 ARGS+="-v " !! 139 echo "Spec file created: ${SPECFILE}"
>> 140 VERBOSE_ARG="-v"
180 fi 141 fi
181 142
182 if [ -n "$MODE" ]; then !! 143 if [[ $dump_pkts -eq 1 ]]; then
183 ARGS+="-m ${MODE} " !! 144 DUMP_PKTS_ARG="-D"
184 fi 145 fi
185 146
186 if [ -n "$TEST" ]; then <<
187 ARGS+="-t ${TEST} " <<
188 fi <<
189 <<
190 retval=$? <<
191 test_status $retval "${TEST_NAME}" 147 test_status $retval "${TEST_NAME}"
192 148
193 ## START TESTS 149 ## START TESTS
194 150
195 statusList=() 151 statusList=()
196 152
197 TEST_NAME="XSK_SELFTESTS_${VETH0}_SOFTIRQ" !! 153 TEST_NAME="XSK KSELFTESTS"
198 <<
199 if [[ $debug -eq 1 ]]; then <<
200 echo "-i" ${VETH0} "-i" ${VETH1} <<
201 exit <<
202 fi <<
203 <<
204 exec_xskxceiver <<
205 154
206 if [ -z $ETH ]; then !! 155 execxdpxceiver
207 cleanup_exit ${VETH0} ${VETH1} <<
208 else <<
209 cleanup_iface ${ETH} ${MTU} <<
210 fi <<
211 156
212 if [[ $list -eq 1 ]]; then !! 157 retval=$?
213 exit !! 158 test_status $retval "${TEST_NAME}"
214 fi !! 159 statusList+=($retval)
215 <<
216 TEST_NAME="XSK_SELFTESTS_${VETH0}_BUSY_POLL" <<
217 busy_poll=1 <<
218 <<
219 if [ -z $ETH ]; then <<
220 setup_vethPairs <<
221 fi <<
222 exec_xskxceiver <<
223 160
224 ## END TESTS 161 ## END TESTS
225 162
226 if [ -z $ETH ]; then !! 163 cleanup_exit ${VETH0} ${VETH1} ${NS1}
227 cleanup_exit ${VETH0} ${VETH1} <<
228 else <<
229 cleanup_iface ${ETH} ${MTU} <<
230 fi <<
231 164
232 failures=0 !! 165 for _status in "${statusList[@]}"
233 echo -e "\nSummary:" <<
234 for i in "${!statusList[@]}" <<
235 do 166 do
236 if [ ${statusList[$i]} -ne 0 ]; then !! 167 if [ $_status -ne 0 ]; then
237 test_status ${statusList[$i]} !! 168 test_exit $ksft_fail 0
238 failures=1 <<
239 fi 169 fi
240 done 170 done
241 171
242 if [ $failures -eq 0 ]; then !! 172 test_exit $ksft_pass 0
243 echo "All tests successful!" <<
244 fi <<
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