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selftests/bpf: Set rp_filter in test_flow_dissector

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Many distributions enable rp_filter. However, the flow dissector test
generates packets that have 1.1.1.1 set as (inner) source address without
this address being reachable. This causes the selftest to fail.

The selftests should not assume a particular initial configuration. Switch
off rp_filter.

Fixes: 50b3ed57de ("selftests/bpf: test bpf flow dissection")
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Petar Penkov <ppenkov@google.com>
Link: https://lore.kernel.org/bpf/513a298f53e99561d2f70b2e60e2858ea6cda754.1570539863.git.jbenc@redhat.com
This commit is contained in:
Jiri Benc 2019-10-08 15:10:44 +02:00 committed by Daniel Borkmann
parent 98beb3edeb
commit fd418b01fe
1 changed files with 3 additions and 0 deletions
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3
tools/testing/selftests/bpf/test_flow_dissector.sh
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@ -63,6 +63,9 @@ fi
# Setup
tc qdisc add dev lo ingress
echo 0 > /proc/sys/net/ipv4/conf/default/rp_filter
echo 0 > /proc/sys/net/ipv4/conf/all/rp_filter
echo 0 > /proc/sys/net/ipv4/conf/lo/rp_filter
echo "Testing IPv4..."
# Drops all IP/UDP packets coming from port 9