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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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d3e3bf5b4c
Prior to this commit individual xsk tests were launched from the shell script 'test_xsk.sh'. When adding a new test type, two new test configurations had to be added to this file - one for each of the supported XDP 'modes' (skb or drv). Should zero copy support be added to the xsk selftest framework in the future, three new test configurations would need to be added for each new test type. Each new test type also typically requires new CLI arguments for the xdpxceiver program. This commit aims to reduce the overhead of adding new tests, by launching the test configurations from within the xdpxceiver program itself, using simple loops. Every test is run every time the C program is executed. Many of the CLI arguments can be removed as a result. Signed-off-by: Ciara Loftus <ciara.loftus@intel.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Link: https://lore.kernel.org/bpf/20210223162304.7450-4-ciara.loftus@intel.com
174 lines
4.3 KiB
Bash
Executable file
174 lines
4.3 KiB
Bash
Executable file
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright(c) 2020 Intel Corporation, Weqaar Janjua <weqaar.a.janjua@intel.com>
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# AF_XDP selftests based on veth
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#
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# End-to-end AF_XDP over Veth test
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#
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# Topology:
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# ---------
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# -----------
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# _ | Process | _
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# / ----------- \
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# / | \
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# / | \
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# ----------- | -----------
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# | Thread1 | | | Thread2 |
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# ----------- | -----------
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# | | |
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# ----------- | -----------
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# | xskX | | | xskY |
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# ----------- | -----------
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# | | |
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# ----------- | ----------
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# | vethX | --------- | vethY |
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# ----------- peer ----------
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# | | |
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# namespaceX | namespaceY
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#
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# AF_XDP is an address family optimized for high performance packet processing,
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# it is XDP’s user-space interface.
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#
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# An AF_XDP socket is linked to a single UMEM which is a region of virtual
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# contiguous memory, divided into equal-sized frames.
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#
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# Refer to AF_XDP Kernel Documentation for detailed information:
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# https://www.kernel.org/doc/html/latest/networking/af_xdp.html
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#
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# Prerequisites setup by script:
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#
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# Set up veth interfaces as per the topology shown ^^:
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# * setup two veth interfaces and one namespace
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# ** veth<xxxx> in root namespace
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# ** veth<yyyy> in af_xdp<xxxx> namespace
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# ** namespace af_xdp<xxxx>
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# * create a spec file veth.spec that includes this run-time configuration
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# *** xxxx and yyyy are randomly generated 4 digit numbers used to avoid
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# conflict with any existing interface
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# * tests the veth and xsk layers of the topology
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#
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# See the source xdpxceiver.c for information on each test
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#
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# Kernel configuration:
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# ---------------------
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# See "config" file for recommended kernel config options.
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#
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# Turn on XDP sockets and veth support when compiling i.e.
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# Networking support -->
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# Networking options -->
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# [ * ] XDP sockets
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#
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# Executing Tests:
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# ----------------
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# Must run with CAP_NET_ADMIN capability.
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#
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# Run (full color-coded output):
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# sudo ./test_xsk.sh -c
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#
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# If running from kselftests:
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# sudo make colorconsole=1 run_tests
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#
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# Run (full output without color-coding):
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# sudo ./test_xsk.sh
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#
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# Run with verbose output:
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# sudo ./test_xsk.sh -v
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#
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# Run and dump packet contents:
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# sudo ./test_xsk.sh -D
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. xsk_prereqs.sh
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while getopts "cvD" flag
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do
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case "${flag}" in
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c) colorconsole=1;;
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v) verbose=1;;
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D) dump_pkts=1;;
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esac
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done
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TEST_NAME="PREREQUISITES"
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URANDOM=/dev/urandom
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[ ! -e "${URANDOM}" ] && { echo "${URANDOM} not found. Skipping tests."; test_exit 1 1; }
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VETH0_POSTFIX=$(cat ${URANDOM} | tr -dc '0-9' | fold -w 256 | head -n 1 | head --bytes 4)
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VETH0=ve${VETH0_POSTFIX}
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VETH1_POSTFIX=$(cat ${URANDOM} | tr -dc '0-9' | fold -w 256 | head -n 1 | head --bytes 4)
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VETH1=ve${VETH1_POSTFIX}
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NS0=root
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NS1=af_xdp${VETH1_POSTFIX}
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MTU=1500
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setup_vethPairs() {
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if [[ $verbose -eq 1 ]]; then
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echo "setting up ${VETH0}: namespace: ${NS0}"
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fi
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ip netns add ${NS1}
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ip link add ${VETH0} type veth peer name ${VETH1}
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if [ -f /proc/net/if_inet6 ]; then
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echo 1 > /proc/sys/net/ipv6/conf/${VETH0}/disable_ipv6
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fi
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if [[ $verbose -eq 1 ]]; then
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echo "setting up ${VETH1}: namespace: ${NS1}"
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fi
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ip link set ${VETH1} netns ${NS1}
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ip netns exec ${NS1} ip link set ${VETH1} mtu ${MTU}
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ip link set ${VETH0} mtu ${MTU}
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ip netns exec ${NS1} ip link set ${VETH1} up
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ip link set ${VETH0} up
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}
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validate_root_exec
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validate_veth_support ${VETH0}
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validate_ip_utility
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setup_vethPairs
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retval=$?
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if [ $retval -ne 0 ]; then
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test_status $retval "${TEST_NAME}"
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cleanup_exit ${VETH0} ${VETH1} ${NS1}
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exit $retval
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fi
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echo "${VETH0}:${VETH1},${NS1}" > ${SPECFILE}
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validate_veth_spec_file
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if [[ $verbose -eq 1 ]]; then
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echo "Spec file created: ${SPECFILE}"
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VERBOSE_ARG="-v"
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fi
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if [[ $dump_pkts -eq 1 ]]; then
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DUMP_PKTS_ARG="-D"
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fi
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test_status $retval "${TEST_NAME}"
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## START TESTS
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statusList=()
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TEST_NAME="XSK KSELFTESTS"
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execxdpxceiver
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retval=$?
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test_status $retval "${TEST_NAME}"
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statusList+=($retval)
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## END TESTS
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cleanup_exit ${VETH0} ${VETH1} ${NS1}
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for _status in "${statusList[@]}"
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do
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if [ $_status -ne 0 ]; then
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test_exit $ksft_fail 0
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fi
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done
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test_exit $ksft_pass 0
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