diff options
| -rw-r--r-- | tools/testing/selftests/bpf/Makefile | 1 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/progs/xdp_redirect_map.c | 31 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/progs/xdp_tx.c | 12 | ||||
| -rwxr-xr-x | tools/testing/selftests/bpf/test_xdp_veth.sh | 118 |
4 files changed, 162 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index fb5ce43e28b3..f2dbe2043067 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -46,6 +46,7 @@ TEST_PROGS := test_kmod.sh \ test_libbpf.sh \ test_xdp_redirect.sh \ test_xdp_meta.sh \ + test_xdp_veth.sh \ test_offload.py \ test_sock_addr.sh \ test_tunnel.sh \ diff --git a/tools/testing/selftests/bpf/progs/xdp_redirect_map.c b/tools/testing/selftests/bpf/progs/xdp_redirect_map.c new file mode 100644 index 000000000000..e87a985b9df9 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/xdp_redirect_map.c @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/bpf.h> +#include "bpf_helpers.h" + +struct bpf_map_def SEC("maps") tx_port = { + .type = BPF_MAP_TYPE_DEVMAP, + .key_size = sizeof(int), + .value_size = sizeof(int), + .max_entries = 8, +}; + +SEC("redirect_map_0") +int xdp_redirect_map_0(struct xdp_md *xdp) +{ + return bpf_redirect_map(&tx_port, 0, 0); +} + +SEC("redirect_map_1") +int xdp_redirect_map_1(struct xdp_md *xdp) +{ + return bpf_redirect_map(&tx_port, 1, 0); +} + +SEC("redirect_map_2") +int xdp_redirect_map_2(struct xdp_md *xdp) +{ + return bpf_redirect_map(&tx_port, 2, 0); +} + +char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/xdp_tx.c b/tools/testing/selftests/bpf/progs/xdp_tx.c new file mode 100644 index 000000000000..57912e7c94b0 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/xdp_tx.c @@ -0,0 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/bpf.h> +#include "bpf_helpers.h" + +SEC("tx") +int xdp_tx(struct xdp_md *xdp) +{ + return XDP_TX; +} + +char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/test_xdp_veth.sh b/tools/testing/selftests/bpf/test_xdp_veth.sh new file mode 100755 index 000000000000..ba8ffcdaac30 --- /dev/null +++ b/tools/testing/selftests/bpf/test_xdp_veth.sh @@ -0,0 +1,118 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# +# Create 3 namespaces with 3 veth peers, and +# forward packets in-between using native XDP +# +# XDP_TX +# NS1(veth11) NS2(veth22) NS3(veth33) +# | | | +# | | | +# (veth1, (veth2, (veth3, +# id:111) id:122) id:133) +# ^ | ^ | ^ | +# | | XDP_REDIRECT | | XDP_REDIRECT | | +# | ------------------ ------------------ | +# ----------------------------------------- +# XDP_REDIRECT + +# Kselftest framework requirement - SKIP code is 4. +ksft_skip=4 + +TESTNAME=xdp_veth +BPF_FS=$(awk '$3 == "bpf" {print $2; exit}' /proc/mounts) +BPF_DIR=$BPF_FS/test_$TESTNAME + +_cleanup() +{ + set +e + ip link del veth1 2> /dev/null + ip link del veth2 2> /dev/null + ip link del veth3 2> /dev/null + ip netns del ns1 2> /dev/null + ip netns del ns2 2> /dev/null + ip netns del ns3 2> /dev/null + rm -rf $BPF_DIR 2> /dev/null +} + +cleanup_skip() +{ + echo "selftests: $TESTNAME [SKIP]" + _cleanup + + exit $ksft_skip +} + +cleanup() +{ + if [ "$?" = 0 ]; then + echo "selftests: $TESTNAME [PASS]" + else + echo "selftests: $TESTNAME [FAILED]" + fi + _cleanup +} + +if [ $(id -u) -ne 0 ]; then + echo "selftests: $TESTNAME [SKIP] Need root privileges" + exit $ksft_skip +fi + +if ! ip link set dev lo xdp off > /dev/null 2>&1; then + echo "selftests: $TESTNAME [SKIP] Could not run test without the ip xdp support" + exit $ksft_skip +fi + +if [ -z "$BPF_FS" ]; then + echo "selftests: $TESTNAME [SKIP] Could not run test without bpffs mounted" + exit $ksft_skip +fi + +if ! bpftool version > /dev/null 2>&1; then + echo "selftests: $TESTNAME [SKIP] Could not run test without bpftool" + exit $ksft_skip +fi + +set -e + +trap cleanup_skip EXIT + +ip netns add ns1 +ip netns add ns2 +ip netns add ns3 + +ip link add veth1 index 111 type veth peer name veth11 netns ns1 +ip link add veth2 index 122 type veth peer name veth22 netns ns2 +ip link add veth3 index 133 type veth peer name veth33 netns ns3 + +ip link set veth1 up +ip link set veth2 up +ip link set veth3 up + +ip -n ns1 addr add 10.1.1.11/24 dev veth11 +ip -n ns3 addr add 10.1.1.33/24 dev veth33 + +ip -n ns1 link set dev veth11 up +ip -n ns2 link set dev veth22 up +ip -n ns3 link set dev veth33 up + +mkdir $BPF_DIR +bpftool prog loadall \ + xdp_redirect_map.o $BPF_DIR/progs type xdp \ + pinmaps $BPF_DIR/maps +bpftool map update pinned $BPF_DIR/maps/tx_port key 0 0 0 0 value 122 0 0 0 +bpftool map update pinned $BPF_DIR/maps/tx_port key 1 0 0 0 value 133 0 0 0 +bpftool map update pinned $BPF_DIR/maps/tx_port key 2 0 0 0 value 111 0 0 0 +ip link set dev veth1 xdp pinned $BPF_DIR/progs/redirect_map_0 +ip link set dev veth2 xdp pinned $BPF_DIR/progs/redirect_map_1 +ip link set dev veth3 xdp pinned $BPF_DIR/progs/redirect_map_2 + +ip -n ns1 link set dev veth11 xdp obj xdp_dummy.o sec xdp_dummy +ip -n ns2 link set dev veth22 xdp obj xdp_tx.o sec tx +ip -n ns3 link set dev veth33 xdp obj xdp_dummy.o sec xdp_dummy + +trap cleanup EXIT + +ip netns exec ns1 ping -c 1 -W 1 10.1.1.33 + +exit 0 |