forked from Minki/linux
selftests: bpf: add VRF test cases to lwt_ip_encap test.
This patch adds tests validating that VRF and BPF-LWT encap work together well, as requested by David Ahern. Signed-off-by: Peter Oskolkov <posk@google.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Peter Oskolkov
Alexei Starovoitov
parent
02a8c817a3
commit
809041e765
@ -129,6 +129,24 @@ setup()
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ip link set veth7 netns ${NS2}
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ip link set veth8 netns ${NS3}
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if [ ! -z "${VRF}" ] ; then
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ip -netns ${NS1} link add red type vrf table 1001
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ip -netns ${NS1} link set red up
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ip -netns ${NS1} route add table 1001 unreachable default metric 8192
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ip -netns ${NS1} -6 route add table 1001 unreachable default metric 8192
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ip -netns ${NS1} link set veth1 vrf red
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ip -netns ${NS1} link set veth5 vrf red
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ip -netns ${NS2} link add red type vrf table 1001
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ip -netns ${NS2} link set red up
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ip -netns ${NS2} route add table 1001 unreachable default metric 8192
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ip -netns ${NS2} -6 route add table 1001 unreachable default metric 8192
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ip -netns ${NS2} link set veth2 vrf red
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ip -netns ${NS2} link set veth3 vrf red
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ip -netns ${NS2} link set veth6 vrf red
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ip -netns ${NS2} link set veth7 vrf red
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fi
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# configure addesses: the top route (1-2-3-4)
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ip -netns ${NS1} addr add ${IPv4_1}/24 dev veth1
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ip -netns ${NS2} addr add ${IPv4_2}/24 dev veth2
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@ -163,29 +181,29 @@ setup()
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# NS1
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# top route
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ip -netns ${NS1} route add ${IPv4_2}/32 dev veth1
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ip -netns ${NS1} route add default dev veth1 via ${IPv4_2} # go top by default
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ip -netns ${NS1} -6 route add ${IPv6_2}/128 dev veth1
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ip -netns ${NS1} -6 route add default dev veth1 via ${IPv6_2} # go top by default
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ip -netns ${NS1} route add ${IPv4_2}/32 dev veth1 ${VRF}
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ip -netns ${NS1} route add default dev veth1 via ${IPv4_2} ${VRF} # go top by default
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ip -netns ${NS1} -6 route add ${IPv6_2}/128 dev veth1 ${VRF}
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ip -netns ${NS1} -6 route add default dev veth1 via ${IPv6_2} ${VRF} # go top by default
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# bottom route
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ip -netns ${NS1} route add ${IPv4_6}/32 dev veth5
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ip -netns ${NS1} route add ${IPv4_7}/32 dev veth5 via ${IPv4_6}
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ip -netns ${NS1} route add ${IPv4_8}/32 dev veth5 via ${IPv4_6}
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ip -netns ${NS1} -6 route add ${IPv6_6}/128 dev veth5
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ip -netns ${NS1} -6 route add ${IPv6_7}/128 dev veth5 via ${IPv6_6}
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ip -netns ${NS1} -6 route add ${IPv6_8}/128 dev veth5 via ${IPv6_6}
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ip -netns ${NS1} route add ${IPv4_6}/32 dev veth5 ${VRF}
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ip -netns ${NS1} route add ${IPv4_7}/32 dev veth5 via ${IPv4_6} ${VRF}
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ip -netns ${NS1} route add ${IPv4_8}/32 dev veth5 via ${IPv4_6} ${VRF}
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ip -netns ${NS1} -6 route add ${IPv6_6}/128 dev veth5 ${VRF}
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ip -netns ${NS1} -6 route add ${IPv6_7}/128 dev veth5 via ${IPv6_6} ${VRF}
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ip -netns ${NS1} -6 route add ${IPv6_8}/128 dev veth5 via ${IPv6_6} ${VRF}
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# NS2
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# top route
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ip -netns ${NS2} route add ${IPv4_1}/32 dev veth2
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ip -netns ${NS2} route add ${IPv4_4}/32 dev veth3
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ip -netns ${NS2} -6 route add ${IPv6_1}/128 dev veth2
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ip -netns ${NS2} -6 route add ${IPv6_4}/128 dev veth3
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ip -netns ${NS2} route add ${IPv4_1}/32 dev veth2 ${VRF}
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ip -netns ${NS2} route add ${IPv4_4}/32 dev veth3 ${VRF}
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ip -netns ${NS2} -6 route add ${IPv6_1}/128 dev veth2 ${VRF}
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ip -netns ${NS2} -6 route add ${IPv6_4}/128 dev veth3 ${VRF}
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# bottom route
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ip -netns ${NS2} route add ${IPv4_5}/32 dev veth6
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ip -netns ${NS2} route add ${IPv4_8}/32 dev veth7
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ip -netns ${NS2} -6 route add ${IPv6_5}/128 dev veth6
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ip -netns ${NS2} -6 route add ${IPv6_8}/128 dev veth7
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ip -netns ${NS2} route add ${IPv4_5}/32 dev veth6 ${VRF}
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ip -netns ${NS2} route add ${IPv4_8}/32 dev veth7 ${VRF}
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ip -netns ${NS2} -6 route add ${IPv6_5}/128 dev veth6 ${VRF}
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ip -netns ${NS2} -6 route add ${IPv6_8}/128 dev veth7 ${VRF}
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# NS3
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# top route
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@ -207,16 +225,16 @@ setup()
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ip -netns ${NS3} tunnel add gre_dev mode gre remote ${IPv4_1} local ${IPv4_GRE} ttl 255
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ip -netns ${NS3} link set gre_dev up
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ip -netns ${NS3} addr add ${IPv4_GRE} dev gre_dev
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ip -netns ${NS1} route add ${IPv4_GRE}/32 dev veth5 via ${IPv4_6}
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ip -netns ${NS2} route add ${IPv4_GRE}/32 dev veth7 via ${IPv4_8}
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ip -netns ${NS1} route add ${IPv4_GRE}/32 dev veth5 via ${IPv4_6} ${VRF}
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ip -netns ${NS2} route add ${IPv4_GRE}/32 dev veth7 via ${IPv4_8} ${VRF}
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# configure IPv6 GRE device in NS3, and a route to it via the "bottom" route
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ip -netns ${NS3} -6 tunnel add name gre6_dev mode ip6gre remote ${IPv6_1} local ${IPv6_GRE} ttl 255
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ip -netns ${NS3} link set gre6_dev up
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ip -netns ${NS3} -6 addr add ${IPv6_GRE} nodad dev gre6_dev
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ip -netns ${NS1} -6 route add ${IPv6_GRE}/128 dev veth5 via ${IPv6_6}
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ip -netns ${NS2} -6 route add ${IPv6_GRE}/128 dev veth7 via ${IPv6_8}
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ip -netns ${NS1} -6 route add ${IPv6_GRE}/128 dev veth5 via ${IPv6_6} ${VRF}
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ip -netns ${NS2} -6 route add ${IPv6_GRE}/128 dev veth7 via ${IPv6_8} ${VRF}
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# rp_filter gets confused by what these tests are doing, so disable it
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ip netns exec ${NS1} sysctl -wq net.ipv4.conf.all.rp_filter=0
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@ -244,18 +262,18 @@ trap cleanup EXIT
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remove_routes_to_gredev()
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{
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ip -netns ${NS1} route del ${IPv4_GRE} dev veth5
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ip -netns ${NS2} route del ${IPv4_GRE} dev veth7
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ip -netns ${NS1} -6 route del ${IPv6_GRE}/128 dev veth5
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ip -netns ${NS2} -6 route del ${IPv6_GRE}/128 dev veth7
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ip -netns ${NS1} route del ${IPv4_GRE} dev veth5 ${VRF}
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ip -netns ${NS2} route del ${IPv4_GRE} dev veth7 ${VRF}
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ip -netns ${NS1} -6 route del ${IPv6_GRE}/128 dev veth5 ${VRF}
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ip -netns ${NS2} -6 route del ${IPv6_GRE}/128 dev veth7 ${VRF}
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}
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add_unreachable_routes_to_gredev()
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{
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ip -netns ${NS1} route add unreachable ${IPv4_GRE}/32
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ip -netns ${NS2} route add unreachable ${IPv4_GRE}/32
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ip -netns ${NS1} -6 route add unreachable ${IPv6_GRE}/128
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ip -netns ${NS2} -6 route add unreachable ${IPv6_GRE}/128
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ip -netns ${NS1} route add unreachable ${IPv4_GRE}/32 ${VRF}
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ip -netns ${NS2} route add unreachable ${IPv4_GRE}/32 ${VRF}
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ip -netns ${NS1} -6 route add unreachable ${IPv6_GRE}/128 ${VRF}
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ip -netns ${NS2} -6 route add unreachable ${IPv6_GRE}/128 ${VRF}
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}
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test_ping()
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@ -265,10 +283,10 @@ test_ping()
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local RET=0
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if [ "${PROTO}" == "IPv4" ] ; then
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ip netns exec ${NS1} ping -c 1 -W 1 -I ${IPv4_SRC} ${IPv4_DST} 2>&1 > /dev/null
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ip netns exec ${NS1} ping -c 1 -W 1 -I veth1 ${IPv4_DST} 2>&1 > /dev/null
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RET=$?
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elif [ "${PROTO}" == "IPv6" ] ; then
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ip netns exec ${NS1} ping6 -c 1 -W 6 -I ${IPv6_SRC} ${IPv6_DST} 2>&1 > /dev/null
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ip netns exec ${NS1} ping6 -c 1 -W 6 -I veth1 ${IPv6_DST} 2>&1 > /dev/null
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RET=$?
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else
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echo " test_ping: unknown PROTO: ${PROTO}"
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@ -328,7 +346,7 @@ test_gso()
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test_egress()
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{
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local readonly ENCAP=$1
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echo "starting egress ${ENCAP} encap test"
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echo "starting egress ${ENCAP} encap test ${VRF}"
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setup
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# by default, pings work
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@ -336,26 +354,35 @@ test_egress()
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test_ping IPv6 0
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# remove NS2->DST routes, ping fails
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ip -netns ${NS2} route del ${IPv4_DST}/32 dev veth3
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ip -netns ${NS2} -6 route del ${IPv6_DST}/128 dev veth3
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ip -netns ${NS2} route del ${IPv4_DST}/32 dev veth3 ${VRF}
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ip -netns ${NS2} -6 route del ${IPv6_DST}/128 dev veth3 ${VRF}
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test_ping IPv4 1
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test_ping IPv6 1
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# install replacement routes (LWT/eBPF), pings succeed
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if [ "${ENCAP}" == "IPv4" ] ; then
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ip -netns ${NS1} route add ${IPv4_DST} encap bpf xmit obj test_lwt_ip_encap.o sec encap_gre dev veth1
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ip -netns ${NS1} -6 route add ${IPv6_DST} encap bpf xmit obj test_lwt_ip_encap.o sec encap_gre dev veth1
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ip -netns ${NS1} route add ${IPv4_DST} encap bpf xmit obj \
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test_lwt_ip_encap.o sec encap_gre dev veth1 ${VRF}
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ip -netns ${NS1} -6 route add ${IPv6_DST} encap bpf xmit obj \
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test_lwt_ip_encap.o sec encap_gre dev veth1 ${VRF}
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elif [ "${ENCAP}" == "IPv6" ] ; then
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ip -netns ${NS1} route add ${IPv4_DST} encap bpf xmit obj test_lwt_ip_encap.o sec encap_gre6 dev veth1
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ip -netns ${NS1} -6 route add ${IPv6_DST} encap bpf xmit obj test_lwt_ip_encap.o sec encap_gre6 dev veth1
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ip -netns ${NS1} route add ${IPv4_DST} encap bpf xmit obj \
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test_lwt_ip_encap.o sec encap_gre6 dev veth1 ${VRF}
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ip -netns ${NS1} -6 route add ${IPv6_DST} encap bpf xmit obj \
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test_lwt_ip_encap.o sec encap_gre6 dev veth1 ${VRF}
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else
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echo " unknown encap ${ENCAP}"
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TEST_STATUS=1
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fi
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test_ping IPv4 0
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test_ping IPv6 0
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test_gso IPv4
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test_gso IPv6
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# skip GSO tests with VRF: VRF routing needs properly assigned
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# source IP/device, which is easy to do with ping and hard with dd/nc.
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if [ -z "${VRF}" ] ; then
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test_gso IPv4
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test_gso IPv6
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fi
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# a negative test: remove routes to GRE devices: ping fails
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remove_routes_to_gredev
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@ -374,7 +401,7 @@ test_egress()
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test_ingress()
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{
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local readonly ENCAP=$1
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echo "starting ingress ${ENCAP} encap test"
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echo "starting ingress ${ENCAP} encap test ${VRF}"
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setup
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# need to wait a bit for IPv6 to autoconf, otherwise
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@ -385,18 +412,22 @@ test_ingress()
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test_ping IPv6 0
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# remove NS2->DST routes, pings fail
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ip -netns ${NS2} route del ${IPv4_DST}/32 dev veth3
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ip -netns ${NS2} -6 route del ${IPv6_DST}/128 dev veth3
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ip -netns ${NS2} route del ${IPv4_DST}/32 dev veth3 ${VRF}
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ip -netns ${NS2} -6 route del ${IPv6_DST}/128 dev veth3 ${VRF}
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test_ping IPv4 1
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test_ping IPv6 1
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# install replacement routes (LWT/eBPF), pings succeed
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if [ "${ENCAP}" == "IPv4" ] ; then
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ip -netns ${NS2} route add ${IPv4_DST} encap bpf in obj test_lwt_ip_encap.o sec encap_gre dev veth2
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ip -netns ${NS2} -6 route add ${IPv6_DST} encap bpf in obj test_lwt_ip_encap.o sec encap_gre dev veth2
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ip -netns ${NS2} route add ${IPv4_DST} encap bpf in obj \
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test_lwt_ip_encap.o sec encap_gre dev veth2 ${VRF}
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ip -netns ${NS2} -6 route add ${IPv6_DST} encap bpf in obj \
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test_lwt_ip_encap.o sec encap_gre dev veth2 ${VRF}
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elif [ "${ENCAP}" == "IPv6" ] ; then
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ip -netns ${NS2} route add ${IPv4_DST} encap bpf in obj test_lwt_ip_encap.o sec encap_gre6 dev veth2
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ip -netns ${NS2} -6 route add ${IPv6_DST} encap bpf in obj test_lwt_ip_encap.o sec encap_gre6 dev veth2
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ip -netns ${NS2} route add ${IPv4_DST} encap bpf in obj \
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test_lwt_ip_encap.o sec encap_gre6 dev veth2 ${VRF}
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ip -netns ${NS2} -6 route add ${IPv6_DST} encap bpf in obj \
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test_lwt_ip_encap.o sec encap_gre6 dev veth2 ${VRF}
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else
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echo "FAIL: unknown encap ${ENCAP}"
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TEST_STATUS=1
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@ -418,6 +449,13 @@ test_ingress()
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process_test_results
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}
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VRF=""
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test_egress IPv4
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test_egress IPv6
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test_ingress IPv4
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test_ingress IPv6
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VRF="vrf red"
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test_egress IPv4
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test_egress IPv6
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test_ingress IPv4
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