netdev - [PATCH] selftests/net: enable lo.accept_local in psock

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Message-Id: <20220520063835.866445-1-luyun_611@163.com>
Date:   Fri, 20 May 2022 14:38:35 +0800
From:   Yun Lu <luyun_611@....com>
To:     willemb@...gle.com, davem@...emloft.net, edumazet@...gle.com
Cc:     netdev@...r.kernel.org, linux-kselftest@...r.kernel.org
Subject: [PATCH] selftests/net: enable lo.accept_local in psock_snd test

From: luyun <luyun@...inos.cn>

The psock_snd test sends and recievs packets over loopback, but the
parameter lo.accept_local is disabled by default, this test will
fail with Resource temporarily unavailable:
sudo ./psock_snd.sh
dgram
tx: 128
rx: 142
./psock_snd: recv: Resource temporarily unavailable

So enable the parameter lo.accept_local in psock_snd test.

Signed-off-by: luyun <luyun@...inos.cn>
Reviewed-by: Jackie Liu <liuyun01@...inos.cn>
---
 tools/testing/selftests/net/psock_snd.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/net/psock_snd.c b/tools/testing/selftests/net/psock_snd.c
index 7d15e10a9fb6..edf1e6f80d41 100644
--- a/tools/testing/selftests/net/psock_snd.c
+++ b/tools/testing/selftests/net/psock_snd.c
@@ -389,6 +389,8 @@ int main(int argc, char **argv)
 		error(1, errno, "ip link set mtu");
 	if (system("ip addr add dev lo 172.17.0.1/24"))
 		error(1, errno, "ip addr add");
+	if (system("sysctl -w net.ipv4.conf.lo.accept_local=1"))
+		error(1, errno, "sysctl lo.accept_local");
 
 	run_test();
 
-- 
2.25.1


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