netdev - [PATCH net] selftests/wireguard: make sure rp

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Message-Id: <20210525121507.6602-1-liuhangbin@gmail.com>
Date:   Tue, 25 May 2021 08:15:07 -0400
From:   Hangbin Liu <liuhangbin@...il.com>
To:     netdev@...r.kernel.org
Cc:     "Jason A . Donenfeld" <Jason@...c4.com>,
        Hangbin Liu <liuhangbin@...il.com>
Subject: [PATCH net] selftests/wireguard: make sure rp_filter disabled on vethc

Some distros may enable strict rp_filter by default, which will previent
vethc receive the packets with unrouteable reverse path address.

Signed-off-by: Hangbin Liu <liuhangbin@...il.com>
---
 tools/testing/selftests/wireguard/netns.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/wireguard/netns.sh b/tools/testing/selftests/wireguard/netns.sh
index 7ed7cd95e58f..37b12f642254 100755
--- a/tools/testing/selftests/wireguard/netns.sh
+++ b/tools/testing/selftests/wireguard/netns.sh
@@ -363,6 +363,7 @@ ip1 -6 rule add table main suppress_prefixlength 0
 ip1 -4 route add default dev wg0 table 51820
 ip1 -4 rule add not fwmark 51820 table 51820
 ip1 -4 rule add table main suppress_prefixlength 0
+n1 sysctl -w net.ipv4.conf.vethc.rp_filter=0
 # Flood the pings instead of sending just one, to trigger routing table reference counting bugs.
 n1 ping -W 1 -c 100 -f 192.168.99.7
 n1 ping -W 1 -c 100 -f abab::1111
-- 
2.26.3