[RFC PATCH v2 bpf-next 13/15] bpf, selftest: Add test for xdp_flow
From: Toshiaki Makita <hidden>
Date: 2019-10-18 04:58:28
Also in:
bpf
Subsystem:
bpf [general] (safe dynamic programs and tools), bpf [selftests] (test runners & infrastructure), kernel selftest framework, the rest, xdp (express data path) · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Shuah Khan, Linus Torvalds, David S. Miller, Jakub Kicinski, Jesper Dangaard Brouer, John Fastabend
Check if TC flow offloading to XDP works. Signed-off-by: Toshiaki Makita <redacted> --- tools/testing/selftests/bpf/Makefile | 1 + tools/testing/selftests/bpf/test_xdp_flow.sh | 106 +++++++++++++++++++++++++++ 2 files changed, 107 insertions(+) create mode 100755 tools/testing/selftests/bpf/test_xdp_flow.sh
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 00d05c5..3db9819 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile@@ -55,6 +55,7 @@ TEST_PROGS := test_kmod.sh \ test_xdp_redirect.sh \ test_xdp_meta.sh \ test_xdp_veth.sh \ + test_xdp_flow.sh \ test_offload.py \ test_sock_addr.sh \ test_tunnel.sh \
diff --git a/tools/testing/selftests/bpf/test_xdp_flow.sh b/tools/testing/selftests/bpf/test_xdp_flow.sh
new file mode 100755
index 0000000..6937454
--- /dev/null
+++ b/tools/testing/selftests/bpf/test_xdp_flow.sh@@ -0,0 +1,106 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# +# Create 2 namespaces with 2 veth peers, and +# forward packets in-between using xdp_flow +# +# NS1(veth11) NS2(veth22) +# | | +# | | +# (veth1) (veth2) +# ^ ^ +# | xdp_flow | +# -------------------- + +# Kselftest framework requirement - SKIP code is 4. +ksft_skip=4 + +TESTNAME=xdp_flow + +_cleanup() +{ + set +e + ip link del veth1 2> /dev/null + ip link del veth2 2> /dev/null + ip netns del ns1 2> /dev/null + ip netns del ns2 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 + +set -e + +trap cleanup_skip EXIT + +ip netns add ns1 +ip netns add ns2 + +ip link add veth1 type veth peer name veth11 netns ns1 +ip link add veth2 type veth peer name veth22 netns ns2 + +ip link set veth1 up +ip link set veth2 up + +ip -n ns1 addr add 10.1.1.11/24 dev veth11 +ip -n ns2 addr add 10.1.1.22/24 dev veth22 + +ip -n ns1 link set dev veth11 up +ip -n ns2 link set dev veth22 up + +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_dummy.o sec xdp_dummy + +ethtool -K veth1 flow-offload-xdp on +ethtool -K veth2 flow-offload-xdp on + +trap cleanup EXIT + +# Adding clsact or ingress will trigger loading bpf prog in UMH +tc qdisc add dev veth1 clsact +tc qdisc add dev veth2 clsact + +# Adding filter will have UMH populate flow table map +tc filter add dev veth1 ingress protocol ip flower \ + dst_ip 10.1.1.0/24 action mirred egress redirect dev veth2 +tc filter add dev veth2 ingress protocol ip flower \ + dst_ip 10.1.1.0/24 action mirred egress redirect dev veth1 + +# flows should be offloaded when 'flow-offload-xdp' is enabled on veth +tc filter show dev veth1 ingress | grep -q not_in_hw && false +tc filter show dev veth2 ingress | grep -q not_in_hw && false + +# ARP is not supported so add filters after in_hw check +tc filter add dev veth1 ingress protocol arp flower \ + arp_tip 10.1.1.0/24 action mirred egress redirect dev veth2 +tc filter add dev veth2 ingress protocol arp flower \ + arp_sip 10.1.1.0/24 action mirred egress redirect dev veth1 + +ip netns exec ns1 ping -c 1 -W 1 10.1.1.22 + +exit 0
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1.8.3.1