tools/testing/selftests/bpf/test_xsk.sh

   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 #   * create a spec file veth.spec that includes this run-time configuration
  47 #   *** xxxx and yyyy are randomly generated 4 digit numbers used to avoid
  48 #       conflict with any existing interface
  49 #   * tests the veth and xsk layers of the topology
  50 #
  51 # See the source xdpxceiver.c for information on each test
  52 #
  53 # Kernel configuration:
  54 # ---------------------
  55 # See "config" file for recommended kernel config options.
  56 #
  57 # Turn on XDP sockets and veth support when compiling i.e.
  58 #       Networking support -->
  59 #               Networking options -->
  60 #                       [ * ] XDP sockets
  61 #
  62 # Executing Tests:
  63 # ----------------
  64 # Must run with CAP_NET_ADMIN capability.
  65 #
  66 # Run (full color-coded output):
  67 #   sudo ./test_xsk.sh -c
  68 #
  69 # If running from kselftests:
  70 #   sudo make colorconsole=1 run_tests
  71 #
  72 # Run (full output without color-coding):
  73 #   sudo ./test_xsk.sh
  74
  75 . xsk_prereqs.sh
  76
  77 while getopts c flag
  78 do
  79         case "${flag}" in
  80                 c) colorconsole=1;;
  81         esac
  82 done
  83
  84 TEST_NAME="PREREQUISITES"
  85
  86 URANDOM=/dev/urandom
  87 [ ! -e "${URANDOM}" ] && { echo "${URANDOM} not found. Skipping tests."; test_exit 1 1; }
  88
  89 VETH0_POSTFIX=$(cat ${URANDOM} | tr -dc '0-9' | fold -w 256 | head -n 1 | head --bytes 4)
  90 VETH0=ve${VETH0_POSTFIX}
  91 VETH1_POSTFIX=$(cat ${URANDOM} | tr -dc '0-9' | fold -w 256 | head -n 1 | head --bytes 4)
  92 VETH1=ve${VETH1_POSTFIX}
  93 NS0=root
  94 NS1=af_xdp${VETH1_POSTFIX}
  95 MTU=1500
  96
  97 setup_vethPairs() {
  98         echo "setting up ${VETH0}: namespace: ${NS0}"
  99         ip netns add ${NS1}
 100         ip link add ${VETH0} type veth peer name ${VETH1}
 101         if [ -f /proc/net/if_inet6 ]; then
 102                 echo 1 > /proc/sys/net/ipv6/conf/${VETH0}/disable_ipv6
 103         fi
 104         echo "setting up ${VETH1}: namespace: ${NS1}"
 105         ip link set ${VETH1} netns ${NS1}
 106         ip netns exec ${NS1} ip link set ${VETH1} mtu ${MTU}
 107         ip link set ${VETH0} mtu ${MTU}
 108         ip netns exec ${NS1} ip link set ${VETH1} up
 109         ip link set ${VETH0} up
 110 }
 111
 112 validate_root_exec
 113 validate_veth_support ${VETH0}
 114 validate_ip_utility
 115 setup_vethPairs
 116
 117 retval=$?
 118 if [ $retval -ne 0 ]; then
 119         test_status $retval "${TEST_NAME}"
 120         cleanup_exit ${VETH0} ${VETH1} ${NS1}
 121         exit $retval
 122 fi
 123
 124 echo "${VETH0}:${VETH1},${NS1}" > ${SPECFILE}
 125
 126 validate_veth_spec_file
 127
 128 echo "Spec file created: ${SPECFILE}"
 129
 130 test_status $retval "${TEST_NAME}"
 131
 132 ## START TESTS
 133
 134 statusList=()
 135
 136 ### TEST 1
 137 TEST_NAME="XSK KSELFTEST FRAMEWORK"
 138
 139 echo "Switching interfaces [${VETH0}, ${VETH1}] to XDP Generic mode"
 140 vethXDPgeneric ${VETH0} ${VETH1} ${NS1}
 141
 142 retval=$?
 143 if [ $retval -eq 0 ]; then
 144         echo "Switching interfaces [${VETH0}, ${VETH1}] to XDP Native mode"
 145         vethXDPnative ${VETH0} ${VETH1} ${NS1}
 146 fi
 147
 148 retval=$?
 149 test_status $retval "${TEST_NAME}"
 150 statusList+=($retval)
 151
 152 ### TEST 2
 153 TEST_NAME="SKB NOPOLL"
 154
 155 vethXDPgeneric ${VETH0} ${VETH1} ${NS1}
 156
 157 params=("-S")
 158 execxdpxceiver params
 159
 160 retval=$?
 161 test_status $retval "${TEST_NAME}"
 162 statusList+=($retval)
 163
 164 ### TEST 3
 165 TEST_NAME="SKB POLL"
 166
 167 vethXDPgeneric ${VETH0} ${VETH1} ${NS1}
 168
 169 params=("-S" "-p")
 170 execxdpxceiver params
 171
 172 retval=$?
 173 test_status $retval "${TEST_NAME}"
 174 statusList+=($retval)
 175
 176 ### TEST 4
 177 TEST_NAME="DRV NOPOLL"
 178
 179 vethXDPnative ${VETH0} ${VETH1} ${NS1}
 180
 181 params=("-N")
 182 execxdpxceiver params
 183
 184 retval=$?
 185 test_status $retval "${TEST_NAME}"
 186 statusList+=($retval)
 187
 188 ### TEST 5
 189 TEST_NAME="DRV POLL"
 190
 191 vethXDPnative ${VETH0} ${VETH1} ${NS1}
 192
 193 params=("-N" "-p")
 194 execxdpxceiver params
 195
 196 retval=$?
 197 test_status $retval "${TEST_NAME}"
 198 statusList+=($retval)
 199
 200 ### TEST 6
 201 TEST_NAME="SKB SOCKET TEARDOWN"
 202
 203 vethXDPgeneric ${VETH0} ${VETH1} ${NS1}
 204
 205 params=("-S" "-T")
 206 execxdpxceiver params
 207
 208 retval=$?
 209 test_status $retval "${TEST_NAME}"
 210 statusList+=($retval)
 211
 212 ### TEST 7
 213 TEST_NAME="DRV SOCKET TEARDOWN"
 214
 215 vethXDPnative ${VETH0} ${VETH1} ${NS1}
 216
 217 params=("-N" "-T")
 218 execxdpxceiver params
 219
 220 retval=$?
 221 test_status $retval "${TEST_NAME}"
 222 statusList+=($retval)
 223
 224 ### TEST 8
 225 TEST_NAME="SKB BIDIRECTIONAL SOCKETS"
 226
 227 vethXDPgeneric ${VETH0} ${VETH1} ${NS1}
 228
 229 params=("-S" "-B")
 230 execxdpxceiver params
 231
 232 retval=$?
 233 test_status $retval "${TEST_NAME}"
 234 statusList+=($retval)
 235
 236 ### TEST 9
 237 TEST_NAME="DRV BIDIRECTIONAL SOCKETS"
 238
 239 vethXDPnative ${VETH0} ${VETH1} ${NS1}
 240
 241 params=("-N" "-B")
 242 execxdpxceiver params
 243
 244 retval=$?
 245 test_status $retval "${TEST_NAME}"
 246 statusList+=($retval)
 247
 248 ## END TESTS
 249
 250 cleanup_exit ${VETH0} ${VETH1} ${NS1}
 251
 252 for _status in "${statusList[@]}"
 253 do
 254         if [ $_status -ne 0 ]; then
 255                 test_exit $ksft_fail 0
 256         fi
 257 done
 258
 259 test_exit $ksft_pass 0