mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-25 11:55:37 +00:00
f2b50f1726
This change fixes flakiness in the BIDIRECTIONAL test:
# [is_pkt_valid] expected length [60], got length [90]
not ok 1 FAIL: SKB BUSY-POLL BIDIRECTIONAL
When IPv6 is enabled, the interface will periodically send MLDv1 and
MLDv2 packets. These packets can cause the BIDIRECTIONAL test to fail
since it uses VETH0 for RX.
For other tests, this was not a problem since they only receive on VETH1
and IPv6 was already disabled on VETH0.
Fixes: a89052572e ("selftests/bpf: Xsk selftests framework")
Signed-off-by: Kal Conley <kal.conley@dectris.com>
Link: https://lore.kernel.org/r/20230405082905.6303-1-kal.conley@dectris.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
209 lines
4.8 KiB
Bash
Executable file
209 lines
4.8 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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# 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
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# ** veth<xxxx>
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# ** veth<yyyy>
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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 xskxceiver.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:
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# sudo ./test_xsk.sh
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#
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# If running from kselftests:
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# sudo make run_tests
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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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#
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# Set up veth interfaces and leave them up so xskxceiver can be launched in a debugger:
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# sudo ./test_xsk.sh -d
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#
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# Run test suite for physical device in loopback mode
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# sudo ./test_xsk.sh -i IFACE
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. xsk_prereqs.sh
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ETH=""
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while getopts "vDi:d" flag
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do
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case "${flag}" in
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v) verbose=1;;
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D) dump_pkts=1;;
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d) debug=1;;
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i) ETH=${OPTARG};;
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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 $ksft_fail; }
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VETH0_POSTFIX=$(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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MTU=1500
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trap ctrl_c INT
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function ctrl_c() {
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cleanup_exit ${VETH0} ${VETH1}
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exit 1
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}
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setup_vethPairs() {
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if [[ $verbose -eq 1 ]]; then
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echo "setting up ${VETH0}"
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fi
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ip link add ${VETH0} numtxqueues 4 numrxqueues 4 type veth peer name ${VETH1} numtxqueues 4 numrxqueues 4
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if [ -f /proc/net/if_inet6 ]; then
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echo 1 > /proc/sys/net/ipv6/conf/${VETH0}/disable_ipv6
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echo 1 > /proc/sys/net/ipv6/conf/${VETH1}/disable_ipv6
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fi
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if [[ $verbose -eq 1 ]]; then
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echo "setting up ${VETH1}"
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fi
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if [[ $busy_poll -eq 1 ]]; then
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echo 2 > /sys/class/net/${VETH0}/napi_defer_hard_irqs
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echo 200000 > /sys/class/net/${VETH0}/gro_flush_timeout
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echo 2 > /sys/class/net/${VETH1}/napi_defer_hard_irqs
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echo 200000 > /sys/class/net/${VETH1}/gro_flush_timeout
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fi
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ip link set ${VETH1} mtu ${MTU}
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ip link set ${VETH0} mtu ${MTU}
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ip link set ${VETH1} up
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ip link set ${VETH0} up
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}
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if [ ! -z $ETH ]; then
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VETH0=${ETH}
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VETH1=${ETH}
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else
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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}
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exit $retval
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fi
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fi
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if [[ $verbose -eq 1 ]]; then
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ARGS+="-v "
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fi
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if [[ $dump_pkts -eq 1 ]]; then
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ARGS="-D "
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fi
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retval=$?
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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_SELFTESTS_${VETH0}_SOFTIRQ"
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if [[ $debug -eq 1 ]]; then
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echo "-i" ${VETH0} "-i" ${VETH1}
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exit
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fi
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exec_xskxceiver
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if [ -z $ETH ]; then
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cleanup_exit ${VETH0} ${VETH1}
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fi
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TEST_NAME="XSK_SELFTESTS_${VETH0}_BUSY_POLL"
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busy_poll=1
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if [ -z $ETH ]; then
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setup_vethPairs
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fi
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exec_xskxceiver
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## END TESTS
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if [ -z $ETH ]; then
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cleanup_exit ${VETH0} ${VETH1}
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fi
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failures=0
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echo -e "\nSummary:"
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for i in "${!statusList[@]}"
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do
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if [ ${statusList[$i]} -ne 0 ]; then
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test_status ${statusList[$i]} ${nameList[$i]}
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failures=1
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fi
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done
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if [ $failures -eq 0 ]; then
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echo "All tests successful!"
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fi
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