1*4882a593Smuzhiyun#!/bin/sh 2*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0 3*4882a593Smuzhiyun# 4*4882a593Smuzhiyun# Create 3 namespaces with 3 veth peers, and 5*4882a593Smuzhiyun# forward packets in-between using native XDP 6*4882a593Smuzhiyun# 7*4882a593Smuzhiyun# XDP_TX 8*4882a593Smuzhiyun# NS1(veth11) NS2(veth22) NS3(veth33) 9*4882a593Smuzhiyun# | | | 10*4882a593Smuzhiyun# | | | 11*4882a593Smuzhiyun# (veth1, (veth2, (veth3, 12*4882a593Smuzhiyun# id:111) id:122) id:133) 13*4882a593Smuzhiyun# ^ | ^ | ^ | 14*4882a593Smuzhiyun# | | XDP_REDIRECT | | XDP_REDIRECT | | 15*4882a593Smuzhiyun# | ------------------ ------------------ | 16*4882a593Smuzhiyun# ----------------------------------------- 17*4882a593Smuzhiyun# XDP_REDIRECT 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun# Kselftest framework requirement - SKIP code is 4. 20*4882a593Smuzhiyunksft_skip=4 21*4882a593Smuzhiyun 22*4882a593SmuzhiyunTESTNAME=xdp_veth 23*4882a593SmuzhiyunBPF_FS=$(awk '$3 == "bpf" {print $2; exit}' /proc/mounts) 24*4882a593SmuzhiyunBPF_DIR=$BPF_FS/test_$TESTNAME 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun_cleanup() 27*4882a593Smuzhiyun{ 28*4882a593Smuzhiyun set +e 29*4882a593Smuzhiyun ip link del veth1 2> /dev/null 30*4882a593Smuzhiyun ip link del veth2 2> /dev/null 31*4882a593Smuzhiyun ip link del veth3 2> /dev/null 32*4882a593Smuzhiyun ip netns del ns1 2> /dev/null 33*4882a593Smuzhiyun ip netns del ns2 2> /dev/null 34*4882a593Smuzhiyun ip netns del ns3 2> /dev/null 35*4882a593Smuzhiyun rm -rf $BPF_DIR 2> /dev/null 36*4882a593Smuzhiyun} 37*4882a593Smuzhiyun 38*4882a593Smuzhiyuncleanup_skip() 39*4882a593Smuzhiyun{ 40*4882a593Smuzhiyun echo "selftests: $TESTNAME [SKIP]" 41*4882a593Smuzhiyun _cleanup 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun exit $ksft_skip 44*4882a593Smuzhiyun} 45*4882a593Smuzhiyun 46*4882a593Smuzhiyuncleanup() 47*4882a593Smuzhiyun{ 48*4882a593Smuzhiyun if [ "$?" = 0 ]; then 49*4882a593Smuzhiyun echo "selftests: $TESTNAME [PASS]" 50*4882a593Smuzhiyun else 51*4882a593Smuzhiyun echo "selftests: $TESTNAME [FAILED]" 52*4882a593Smuzhiyun fi 53*4882a593Smuzhiyun _cleanup 54*4882a593Smuzhiyun} 55*4882a593Smuzhiyun 56*4882a593Smuzhiyunif [ $(id -u) -ne 0 ]; then 57*4882a593Smuzhiyun echo "selftests: $TESTNAME [SKIP] Need root privileges" 58*4882a593Smuzhiyun exit $ksft_skip 59*4882a593Smuzhiyunfi 60*4882a593Smuzhiyun 61*4882a593Smuzhiyunif ! ip link set dev lo xdp off > /dev/null 2>&1; then 62*4882a593Smuzhiyun echo "selftests: $TESTNAME [SKIP] Could not run test without the ip xdp support" 63*4882a593Smuzhiyun exit $ksft_skip 64*4882a593Smuzhiyunfi 65*4882a593Smuzhiyun 66*4882a593Smuzhiyunif [ -z "$BPF_FS" ]; then 67*4882a593Smuzhiyun echo "selftests: $TESTNAME [SKIP] Could not run test without bpffs mounted" 68*4882a593Smuzhiyun exit $ksft_skip 69*4882a593Smuzhiyunfi 70*4882a593Smuzhiyun 71*4882a593Smuzhiyunif ! bpftool version > /dev/null 2>&1; then 72*4882a593Smuzhiyun echo "selftests: $TESTNAME [SKIP] Could not run test without bpftool" 73*4882a593Smuzhiyun exit $ksft_skip 74*4882a593Smuzhiyunfi 75*4882a593Smuzhiyun 76*4882a593Smuzhiyunset -e 77*4882a593Smuzhiyun 78*4882a593Smuzhiyuntrap cleanup_skip EXIT 79*4882a593Smuzhiyun 80*4882a593Smuzhiyunip netns add ns1 81*4882a593Smuzhiyunip netns add ns2 82*4882a593Smuzhiyunip netns add ns3 83*4882a593Smuzhiyun 84*4882a593Smuzhiyunip link add veth1 index 111 type veth peer name veth11 netns ns1 85*4882a593Smuzhiyunip link add veth2 index 122 type veth peer name veth22 netns ns2 86*4882a593Smuzhiyunip link add veth3 index 133 type veth peer name veth33 netns ns3 87*4882a593Smuzhiyun 88*4882a593Smuzhiyunip link set veth1 up 89*4882a593Smuzhiyunip link set veth2 up 90*4882a593Smuzhiyunip link set veth3 up 91*4882a593Smuzhiyun 92*4882a593Smuzhiyunip -n ns1 addr add 10.1.1.11/24 dev veth11 93*4882a593Smuzhiyunip -n ns3 addr add 10.1.1.33/24 dev veth33 94*4882a593Smuzhiyun 95*4882a593Smuzhiyunip -n ns1 link set dev veth11 up 96*4882a593Smuzhiyunip -n ns2 link set dev veth22 up 97*4882a593Smuzhiyunip -n ns3 link set dev veth33 up 98*4882a593Smuzhiyun 99*4882a593Smuzhiyunmkdir $BPF_DIR 100*4882a593Smuzhiyunbpftool prog loadall \ 101*4882a593Smuzhiyun xdp_redirect_map.o $BPF_DIR/progs type xdp \ 102*4882a593Smuzhiyun pinmaps $BPF_DIR/maps 103*4882a593Smuzhiyunbpftool map update pinned $BPF_DIR/maps/tx_port key 0 0 0 0 value 122 0 0 0 104*4882a593Smuzhiyunbpftool map update pinned $BPF_DIR/maps/tx_port key 1 0 0 0 value 133 0 0 0 105*4882a593Smuzhiyunbpftool map update pinned $BPF_DIR/maps/tx_port key 2 0 0 0 value 111 0 0 0 106*4882a593Smuzhiyunip link set dev veth1 xdp pinned $BPF_DIR/progs/redirect_map_0 107*4882a593Smuzhiyunip link set dev veth2 xdp pinned $BPF_DIR/progs/redirect_map_1 108*4882a593Smuzhiyunip link set dev veth3 xdp pinned $BPF_DIR/progs/redirect_map_2 109*4882a593Smuzhiyun 110*4882a593Smuzhiyunip -n ns1 link set dev veth11 xdp obj xdp_dummy.o sec xdp_dummy 111*4882a593Smuzhiyunip -n ns2 link set dev veth22 xdp obj xdp_tx.o sec xdp 112*4882a593Smuzhiyunip -n ns3 link set dev veth33 xdp obj xdp_dummy.o sec xdp_dummy 113*4882a593Smuzhiyun 114*4882a593Smuzhiyuntrap cleanup EXIT 115*4882a593Smuzhiyun 116*4882a593Smuzhiyunip netns exec ns1 ping -c 1 -W 1 10.1.1.33 117*4882a593Smuzhiyun 118*4882a593Smuzhiyunexit 0 119