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selftests, bpf: test_lwt_ip_encap: Really disable rp_filter

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[ Upstream commit 79e2c306667542b8ee2d9a9d947eadc7039f0a3c ]

It's not enough to set net.ipv4.conf.all.rp_filter=0, that does not override
a greater rp_filter value on the individual interfaces. We also need to set
net.ipv4.conf.default.rp_filter=0 before creating the interfaces. That way,
they'll also get their own rp_filter value of zero.

Fixes: 0fde56e438 ("selftests: bpf: add test_lwt_ip_encap selftest")
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/b1cdd9d469f09ea6e01e9c89a6071c79b7380f89.1632386362.git.jbenc@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jiri Benc
2021-09-23 10:40:22 +02:00
committed by Greg Kroah-Hartman
parent 4967ae9ab4
commit f1dd6e10f0
1 changed files with 8 additions and 5 deletions
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13
tools/testing/selftests/bpf/test_lwt_ip_encap.sh
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@@ -112,6 +112,14 @@ setup()
ip netns add "${NS2}" ip netns add "${NS2}"
ip netns add "${NS3}" ip netns add "${NS3}"
# 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
ip netns exec ${NS2} sysctl -wq net.ipv4.conf.all.rp_filter=0
ip netns exec ${NS3} sysctl -wq net.ipv4.conf.all.rp_filter=0
ip netns exec ${NS1} sysctl -wq net.ipv4.conf.default.rp_filter=0
ip netns exec ${NS2} sysctl -wq net.ipv4.conf.default.rp_filter=0
ip netns exec ${NS3} sysctl -wq net.ipv4.conf.default.rp_filter=0
ip link add veth1 type veth peer name veth2 ip link add veth1 type veth peer name veth2
ip link add veth3 type veth peer name veth4 ip link add veth3 type veth peer name veth4
ip link add veth5 type veth peer name veth6 ip link add veth5 type veth peer name veth6
@@ -236,11 +244,6 @@ setup()
ip -netns ${NS1} -6 route add ${IPv6_GRE}/128 dev veth5 via ${IPv6_6} ${VRF} 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} 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
ip netns exec ${NS2} sysctl -wq net.ipv4.conf.all.rp_filter=0
ip netns exec ${NS3} sysctl -wq net.ipv4.conf.all.rp_filter=0
TMPFILE=$(mktemp /tmp/test_lwt_ip_encap.XXXXXX) TMPFILE=$(mktemp /tmp/test_lwt_ip_encap.XXXXXX)
sleep 1 # reduce flakiness sleep 1 # reduce flakiness