test_xdp_veth.sh (3270B)
1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0 3# 4# Create 3 namespaces with 3 veth peers, and 5# forward packets in-between using native XDP 6# 7# XDP_TX 8# NS1(veth11) NS2(veth22) NS3(veth33) 9# | | | 10# | | | 11# (veth1, (veth2, (veth3, 12# id:111) id:122) id:133) 13# ^ | ^ | ^ | 14# | | XDP_REDIRECT | | XDP_REDIRECT | | 15# | ------------------ ------------------ | 16# ----------------------------------------- 17# XDP_REDIRECT 18 19# Kselftest framework requirement - SKIP code is 4. 20ksft_skip=4 21 22TESTNAME=xdp_veth 23BPF_FS=$(awk '$3 == "bpf" {print $2; exit}' /proc/mounts) 24BPF_DIR=$BPF_FS/test_$TESTNAME 25readonly NS1="ns1-$(mktemp -u XXXXXX)" 26readonly NS2="ns2-$(mktemp -u XXXXXX)" 27readonly NS3="ns3-$(mktemp -u XXXXXX)" 28 29_cleanup() 30{ 31 set +e 32 ip link del veth1 2> /dev/null 33 ip link del veth2 2> /dev/null 34 ip link del veth3 2> /dev/null 35 ip netns del ${NS1} 2> /dev/null 36 ip netns del ${NS2} 2> /dev/null 37 ip netns del ${NS3} 2> /dev/null 38 rm -rf $BPF_DIR 2> /dev/null 39} 40 41cleanup_skip() 42{ 43 echo "selftests: $TESTNAME [SKIP]" 44 _cleanup 45 46 exit $ksft_skip 47} 48 49cleanup() 50{ 51 if [ "$?" = 0 ]; then 52 echo "selftests: $TESTNAME [PASS]" 53 else 54 echo "selftests: $TESTNAME [FAILED]" 55 fi 56 _cleanup 57} 58 59if [ $(id -u) -ne 0 ]; then 60 echo "selftests: $TESTNAME [SKIP] Need root privileges" 61 exit $ksft_skip 62fi 63 64if ! ip link set dev lo xdp off > /dev/null 2>&1; then 65 echo "selftests: $TESTNAME [SKIP] Could not run test without the ip xdp support" 66 exit $ksft_skip 67fi 68 69if [ -z "$BPF_FS" ]; then 70 echo "selftests: $TESTNAME [SKIP] Could not run test without bpffs mounted" 71 exit $ksft_skip 72fi 73 74if ! bpftool version > /dev/null 2>&1; then 75 echo "selftests: $TESTNAME [SKIP] Could not run test without bpftool" 76 exit $ksft_skip 77fi 78 79set -e 80 81trap cleanup_skip EXIT 82 83ip netns add ${NS1} 84ip netns add ${NS2} 85ip netns add ${NS3} 86 87ip link add veth1 index 111 type veth peer name veth11 netns ${NS1} 88ip link add veth2 index 122 type veth peer name veth22 netns ${NS2} 89ip link add veth3 index 133 type veth peer name veth33 netns ${NS3} 90 91ip link set veth1 up 92ip link set veth2 up 93ip link set veth3 up 94 95ip -n ${NS1} addr add 10.1.1.11/24 dev veth11 96ip -n ${NS3} addr add 10.1.1.33/24 dev veth33 97 98ip -n ${NS1} link set dev veth11 up 99ip -n ${NS2} link set dev veth22 up 100ip -n ${NS3} link set dev veth33 up 101 102mkdir $BPF_DIR 103bpftool prog loadall \ 104 xdp_redirect_map.o $BPF_DIR/progs type xdp \ 105 pinmaps $BPF_DIR/maps 106bpftool map update pinned $BPF_DIR/maps/tx_port key 0 0 0 0 value 122 0 0 0 107bpftool map update pinned $BPF_DIR/maps/tx_port key 1 0 0 0 value 133 0 0 0 108bpftool map update pinned $BPF_DIR/maps/tx_port key 2 0 0 0 value 111 0 0 0 109ip link set dev veth1 xdp pinned $BPF_DIR/progs/redirect_map_0 110ip link set dev veth2 xdp pinned $BPF_DIR/progs/redirect_map_1 111ip link set dev veth3 xdp pinned $BPF_DIR/progs/redirect_map_2 112 113ip -n ${NS1} link set dev veth11 xdp obj xdp_dummy.o sec xdp 114ip -n ${NS2} link set dev veth22 xdp obj xdp_tx.o sec xdp 115ip -n ${NS3} link set dev veth33 xdp obj xdp_dummy.o sec xdp 116 117trap cleanup EXIT 118 119ip netns exec ${NS1} ping -c 1 -W 1 10.1.1.33 120 121exit 0