#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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#
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# Create 3 namespaces with 3 veth peers, and
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# forward packets in-between using native XDP
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#
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# XDP_TX
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# NS1(veth11) NS2(veth22) NS3(veth33)
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# | | |
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# | | |
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# (veth1, (veth2, (veth3,
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# id:111) id:122) id:133)
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# ^ | ^ | ^ |
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# | | XDP_REDIRECT | | XDP_REDIRECT | |
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# | ------------------ ------------------ |
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# -----------------------------------------
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# XDP_REDIRECT
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# Kselftest framework requirement - SKIP code is 4.
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ksft_skip=4
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TESTNAME=xdp_veth
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BPF_FS=$(awk '$3 == "bpf" {print $2; exit}' /proc/mounts)
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BPF_DIR=$BPF_FS/test_$TESTNAME
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_cleanup()
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{
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set +e
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ip link del veth1 2> /dev/null
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ip link del veth2 2> /dev/null
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ip link del veth3 2> /dev/null
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ip netns del ns1 2> /dev/null
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ip netns del ns2 2> /dev/null
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ip netns del ns3 2> /dev/null
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rm -rf $BPF_DIR 2> /dev/null
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}
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cleanup_skip()
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{
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echo "selftests: $TESTNAME [SKIP]"
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_cleanup
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exit $ksft_skip
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}
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cleanup()
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{
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if [ "$?" = 0 ]; then
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echo "selftests: $TESTNAME [PASS]"
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else
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echo "selftests: $TESTNAME [FAILED]"
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fi
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_cleanup
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}
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if [ $(id -u) -ne 0 ]; then
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echo "selftests: $TESTNAME [SKIP] Need root privileges"
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exit $ksft_skip
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fi
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if ! ip link set dev lo xdp off > /dev/null 2>&1; then
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echo "selftests: $TESTNAME [SKIP] Could not run test without the ip xdp support"
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exit $ksft_skip
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fi
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if [ -z "$BPF_FS" ]; then
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echo "selftests: $TESTNAME [SKIP] Could not run test without bpffs mounted"
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exit $ksft_skip
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fi
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if ! bpftool version > /dev/null 2>&1; then
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echo "selftests: $TESTNAME [SKIP] Could not run test without bpftool"
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exit $ksft_skip
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fi
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set -e
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trap cleanup_skip EXIT
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ip netns add ns1
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ip netns add ns2
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ip netns add ns3
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ip link add veth1 index 111 type veth peer name veth11 netns ns1
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ip link add veth2 index 122 type veth peer name veth22 netns ns2
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ip link add veth3 index 133 type veth peer name veth33 netns ns3
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ip link set veth1 up
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ip link set veth2 up
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ip link set veth3 up
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ip -n ns1 addr add 10.1.1.11/24 dev veth11
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ip -n ns3 addr add 10.1.1.33/24 dev veth33
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ip -n ns1 link set dev veth11 up
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ip -n ns2 link set dev veth22 up
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ip -n ns3 link set dev veth33 up
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mkdir $BPF_DIR
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bpftool prog loadall \
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xdp_redirect_map.o $BPF_DIR/progs type xdp \
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pinmaps $BPF_DIR/maps
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bpftool map update pinned $BPF_DIR/maps/tx_port key 0 0 0 0 value 122 0 0 0
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bpftool map update pinned $BPF_DIR/maps/tx_port key 1 0 0 0 value 133 0 0 0
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bpftool map update pinned $BPF_DIR/maps/tx_port key 2 0 0 0 value 111 0 0 0
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ip link set dev veth1 xdp pinned $BPF_DIR/progs/redirect_map_0
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ip link set dev veth2 xdp pinned $BPF_DIR/progs/redirect_map_1
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ip link set dev veth3 xdp pinned $BPF_DIR/progs/redirect_map_2
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ip -n ns1 link set dev veth11 xdp obj xdp_dummy.o sec xdp_dummy
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ip -n ns2 link set dev veth22 xdp obj xdp_tx.o sec xdp
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ip -n ns3 link set dev veth33 xdp obj xdp_dummy.o sec xdp_dummy
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trap cleanup EXIT
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ip netns exec ns1 ping -c 1 -W 1 10.1.1.33
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exit 0
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