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Commit 809041e7 authored by Peter Oskolkov's avatar Peter Oskolkov Committed by Alexei Starovoitov
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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: default avatarPeter Oskolkov <posk@google.com>
Acked-by: default avatarMartin KaFai Lau <kafai@fb.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 02a8c817
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Inline Side-by-side
Showing with 86 additions and 48 deletions
tools/testing/selftests/bpf/test_lwt_ip_encap.sh
View file @ 809041e7
......@@ -129,6 +129,24 @@ setup()
ip link set veth7 netns ${NS2}
ip link set veth8 netns ${NS3}
if [ ! -z "${VRF}" ] ; then
ip -netns ${NS1} link add red type vrf table 1001
ip -netns ${NS1} link set red up
ip -netns ${NS1} route add table 1001 unreachable default metric 8192
ip -netns ${NS1} -6 route add table 1001 unreachable default metric 8192
ip -netns ${NS1} link set veth1 vrf red
ip -netns ${NS1} link set veth5 vrf red
ip -netns ${NS2} link add red type vrf table 1001
ip -netns ${NS2} link set red up
ip -netns ${NS2} route add table 1001 unreachable default metric 8192
ip -netns ${NS2} -6 route add table 1001 unreachable default metric 8192
ip -netns ${NS2} link set veth2 vrf red
ip -netns ${NS2} link set veth3 vrf red
ip -netns ${NS2} link set veth6 vrf red
ip -netns ${NS2} link set veth7 vrf red
fi
# configure addesses: the top route (1-2-3-4)
ip -netns ${NS1} addr add ${IPv4_1}/24 dev veth1
ip -netns ${NS2} addr add ${IPv4_2}/24 dev veth2
......@@ -163,29 +181,29 @@ setup()
# NS1
# top route
ip -netns ${NS1} route add ${IPv4_2}/32 dev veth1
ip -netns ${NS1} route add default dev veth1 via ${IPv4_2} # go top by default
ip -netns ${NS1} -6 route add ${IPv6_2}/128 dev veth1
ip -netns ${NS1} -6 route add default dev veth1 via ${IPv6_2} # go top by default
ip -netns ${NS1} route add ${IPv4_2}/32 dev veth1 ${VRF}
ip -netns ${NS1} route add default dev veth1 via ${IPv4_2} ${VRF} # go top by default
ip -netns ${NS1} -6 route add ${IPv6_2}/128 dev veth1 ${VRF}
ip -netns ${NS1} -6 route add default dev veth1 via ${IPv6_2} ${VRF} # go top by default
# bottom route
ip -netns ${NS1} route add ${IPv4_6}/32 dev veth5
ip -netns ${NS1} route add ${IPv4_7}/32 dev veth5 via ${IPv4_6}
ip -netns ${NS1} route add ${IPv4_8}/32 dev veth5 via ${IPv4_6}
ip -netns ${NS1} -6 route add ${IPv6_6}/128 dev veth5
ip -netns ${NS1} -6 route add ${IPv6_7}/128 dev veth5 via ${IPv6_6}
ip -netns ${NS1} -6 route add ${IPv6_8}/128 dev veth5 via ${IPv6_6}
ip -netns ${NS1} route add ${IPv4_6}/32 dev veth5 ${VRF}
ip -netns ${NS1} route add ${IPv4_7}/32 dev veth5 via ${IPv4_6} ${VRF}
ip -netns ${NS1} route add ${IPv4_8}/32 dev veth5 via ${IPv4_6} ${VRF}
ip -netns ${NS1} -6 route add ${IPv6_6}/128 dev veth5 ${VRF}
ip -netns ${NS1} -6 route add ${IPv6_7}/128 dev veth5 via ${IPv6_6} ${VRF}
ip -netns ${NS1} -6 route add ${IPv6_8}/128 dev veth5 via ${IPv6_6} ${VRF}
# NS2
# top route
ip -netns ${NS2} route add ${IPv4_1}/32 dev veth2
ip -netns ${NS2} route add ${IPv4_4}/32 dev veth3
ip -netns ${NS2} -6 route add ${IPv6_1}/128 dev veth2
ip -netns ${NS2} -6 route add ${IPv6_4}/128 dev veth3
ip -netns ${NS2} route add ${IPv4_1}/32 dev veth2 ${VRF}
ip -netns ${NS2} route add ${IPv4_4}/32 dev veth3 ${VRF}
ip -netns ${NS2} -6 route add ${IPv6_1}/128 dev veth2 ${VRF}
ip -netns ${NS2} -6 route add ${IPv6_4}/128 dev veth3 ${VRF}
# bottom route
ip -netns ${NS2} route add ${IPv4_5}/32 dev veth6
ip -netns ${NS2} route add ${IPv4_8}/32 dev veth7
ip -netns ${NS2} -6 route add ${IPv6_5}/128 dev veth6
ip -netns ${NS2} -6 route add ${IPv6_8}/128 dev veth7
ip -netns ${NS2} route add ${IPv4_5}/32 dev veth6 ${VRF}
ip -netns ${NS2} route add ${IPv4_8}/32 dev veth7 ${VRF}
ip -netns ${NS2} -6 route add ${IPv6_5}/128 dev veth6 ${VRF}
ip -netns ${NS2} -6 route add ${IPv6_8}/128 dev veth7 ${VRF}
# NS3
# top route
......@@ -207,16 +225,16 @@ setup()
ip -netns ${NS3} tunnel add gre_dev mode gre remote ${IPv4_1} local ${IPv4_GRE} ttl 255
ip -netns ${NS3} link set gre_dev up
ip -netns ${NS3} addr add ${IPv4_GRE} dev gre_dev
ip -netns ${NS1} route add ${IPv4_GRE}/32 dev veth5 via ${IPv4_6}
ip -netns ${NS2} route add ${IPv4_GRE}/32 dev veth7 via ${IPv4_8}
ip -netns ${NS1} route add ${IPv4_GRE}/32 dev veth5 via ${IPv4_6} ${VRF}
ip -netns ${NS2} route add ${IPv4_GRE}/32 dev veth7 via ${IPv4_8} ${VRF}
# configure IPv6 GRE device in NS3, and a route to it via the "bottom" route
ip -netns ${NS3} -6 tunnel add name gre6_dev mode ip6gre remote ${IPv6_1} local ${IPv6_GRE} ttl 255
ip -netns ${NS3} link set gre6_dev up
ip -netns ${NS3} -6 addr add ${IPv6_GRE} nodad dev gre6_dev
ip -netns ${NS1} -6 route add ${IPv6_GRE}/128 dev veth5 via ${IPv6_6}
ip -netns ${NS2} -6 route add ${IPv6_GRE}/128 dev veth7 via ${IPv6_8}
ip -netns ${NS1} -6 route add ${IPv6_GRE}/128 dev veth5 via ${IPv6_6} ${VRF}
ip -netns ${NS2} -6 route add ${IPv6_GRE}/128 dev veth7 via ${IPv6_8} ${VRF}
# rp_filter gets confused by what these tests are doing, so disable it
ip netns exec ${NS1} sysctl -wq net.ipv4.conf.all.rp_filter=0
......@@ -244,18 +262,18 @@ trap cleanup EXIT
remove_routes_to_gredev()
{
ip -netns ${NS1} route del ${IPv4_GRE} dev veth5
ip -netns ${NS2} route del ${IPv4_GRE} dev veth7
ip -netns ${NS1} -6 route del ${IPv6_GRE}/128 dev veth5
ip -netns ${NS2} -6 route del ${IPv6_GRE}/128 dev veth7
ip -netns ${NS1} route del ${IPv4_GRE} dev veth5 ${VRF}
ip -netns ${NS2} route del ${IPv4_GRE} dev veth7 ${VRF}
ip -netns ${NS1} -6 route del ${IPv6_GRE}/128 dev veth5 ${VRF}
ip -netns ${NS2} -6 route del ${IPv6_GRE}/128 dev veth7 ${VRF}
}
add_unreachable_routes_to_gredev()
{
ip -netns ${NS1} route add unreachable ${IPv4_GRE}/32
ip -netns ${NS2} route add unreachable ${IPv4_GRE}/32
ip -netns ${NS1} -6 route add unreachable ${IPv6_GRE}/128
ip -netns ${NS2} -6 route add unreachable ${IPv6_GRE}/128
ip -netns ${NS1} route add unreachable ${IPv4_GRE}/32 ${VRF}
ip -netns ${NS2} route add unreachable ${IPv4_GRE}/32 ${VRF}
ip -netns ${NS1} -6 route add unreachable ${IPv6_GRE}/128 ${VRF}
ip -netns ${NS2} -6 route add unreachable ${IPv6_GRE}/128 ${VRF}
}
test_ping()
......@@ -265,10 +283,10 @@ test_ping()
local RET=0
if [ "${PROTO}" == "IPv4" ] ; then
ip netns exec ${NS1} ping -c 1 -W 1 -I ${IPv4_SRC} ${IPv4_DST} 2>&1 > /dev/null
ip netns exec ${NS1} ping -c 1 -W 1 -I veth1 ${IPv4_DST} 2>&1 > /dev/null
RET=$?
elif [ "${PROTO}" == "IPv6" ] ; then
ip netns exec ${NS1} ping6 -c 1 -W 6 -I ${IPv6_SRC} ${IPv6_DST} 2>&1 > /dev/null
ip netns exec ${NS1} ping6 -c 1 -W 6 -I veth1 ${IPv6_DST} 2>&1 > /dev/null
RET=$?
else
echo " test_ping: unknown PROTO: ${PROTO}"
......@@ -328,7 +346,7 @@ test_gso()
test_egress()
{
local readonly ENCAP=$1
echo "starting egress ${ENCAP} encap test"
echo "starting egress ${ENCAP} encap test ${VRF}"
setup
# by default, pings work
......@@ -336,26 +354,35 @@ test_egress()
test_ping IPv6 0
# remove NS2->DST routes, ping fails
ip -netns ${NS2} route del ${IPv4_DST}/32 dev veth3
ip -netns ${NS2} -6 route del ${IPv6_DST}/128 dev veth3
ip -netns ${NS2} route del ${IPv4_DST}/32 dev veth3 ${VRF}
ip -netns ${NS2} -6 route del ${IPv6_DST}/128 dev veth3 ${VRF}
test_ping IPv4 1
test_ping IPv6 1
# install replacement routes (LWT/eBPF), pings succeed
if [ "${ENCAP}" == "IPv4" ] ; then
ip -netns ${NS1} route add ${IPv4_DST} encap bpf xmit obj test_lwt_ip_encap.o sec encap_gre dev veth1
ip -netns ${NS1} -6 route add ${IPv6_DST} encap bpf xmit obj test_lwt_ip_encap.o sec encap_gre dev veth1
ip -netns ${NS1} route add ${IPv4_DST} encap bpf xmit obj \
test_lwt_ip_encap.o sec encap_gre dev veth1 ${VRF}
ip -netns ${NS1} -6 route add ${IPv6_DST} encap bpf xmit obj \
test_lwt_ip_encap.o sec encap_gre dev veth1 ${VRF}
elif [ "${ENCAP}" == "IPv6" ] ; then
ip -netns ${NS1} route add ${IPv4_DST} encap bpf xmit obj test_lwt_ip_encap.o sec encap_gre6 dev veth1
ip -netns ${NS1} -6 route add ${IPv6_DST} encap bpf xmit obj test_lwt_ip_encap.o sec encap_gre6 dev veth1
ip -netns ${NS1} route add ${IPv4_DST} encap bpf xmit obj \
test_lwt_ip_encap.o sec encap_gre6 dev veth1 ${VRF}
ip -netns ${NS1} -6 route add ${IPv6_DST} encap bpf xmit obj \
test_lwt_ip_encap.o sec encap_gre6 dev veth1 ${VRF}
else
echo " unknown encap ${ENCAP}"
TEST_STATUS=1
fi
test_ping IPv4 0
test_ping IPv6 0
test_gso IPv4
test_gso IPv6
# skip GSO tests with VRF: VRF routing needs properly assigned
# source IP/device, which is easy to do with ping and hard with dd/nc.
if [ -z "${VRF}" ] ; then
test_gso IPv4
test_gso IPv6
fi
# a negative test: remove routes to GRE devices: ping fails
remove_routes_to_gredev
......@@ -374,7 +401,7 @@ test_egress()
test_ingress()
{
local readonly ENCAP=$1
echo "starting ingress ${ENCAP} encap test"
echo "starting ingress ${ENCAP} encap test ${VRF}"
setup
# need to wait a bit for IPv6 to autoconf, otherwise
......@@ -385,18 +412,22 @@ test_ingress()
test_ping IPv6 0
# remove NS2->DST routes, pings fail
ip -netns ${NS2} route del ${IPv4_DST}/32 dev veth3
ip -netns ${NS2} -6 route del ${IPv6_DST}/128 dev veth3
ip -netns ${NS2} route del ${IPv4_DST}/32 dev veth3 ${VRF}
ip -netns ${NS2} -6 route del ${IPv6_DST}/128 dev veth3 ${VRF}
test_ping IPv4 1
test_ping IPv6 1
# install replacement routes (LWT/eBPF), pings succeed
if [ "${ENCAP}" == "IPv4" ] ; then
ip -netns ${NS2} route add ${IPv4_DST} encap bpf in obj test_lwt_ip_encap.o sec encap_gre dev veth2
ip -netns ${NS2} -6 route add ${IPv6_DST} encap bpf in obj test_lwt_ip_encap.o sec encap_gre dev veth2
ip -netns ${NS2} route add ${IPv4_DST} encap bpf in obj \
test_lwt_ip_encap.o sec encap_gre dev veth2 ${VRF}
ip -netns ${NS2} -6 route add ${IPv6_DST} encap bpf in obj \
test_lwt_ip_encap.o sec encap_gre dev veth2 ${VRF}
elif [ "${ENCAP}" == "IPv6" ] ; then
ip -netns ${NS2} route add ${IPv4_DST} encap bpf in obj test_lwt_ip_encap.o sec encap_gre6 dev veth2
ip -netns ${NS2} -6 route add ${IPv6_DST} encap bpf in obj test_lwt_ip_encap.o sec encap_gre6 dev veth2
ip -netns ${NS2} route add ${IPv4_DST} encap bpf in obj \
test_lwt_ip_encap.o sec encap_gre6 dev veth2 ${VRF}
ip -netns ${NS2} -6 route add ${IPv6_DST} encap bpf in obj \
test_lwt_ip_encap.o sec encap_gre6 dev veth2 ${VRF}
else
echo "FAIL: unknown encap ${ENCAP}"
TEST_STATUS=1
......@@ -418,6 +449,13 @@ test_ingress()
process_test_results
}
VRF=""
test_egress IPv4
test_egress IPv6
test_ingress IPv4
test_ingress IPv6
VRF="vrf red"
test_egress IPv4
test_egress IPv6
test_ingress IPv4
......
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