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BACKPORT: net: Make locking in sock_bindtoindex optional

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The sock_bindtoindex intended for kernel wide usage however
it will lock the socket regardless of the context. This modification
relax this behavior optionally: locking the socket will be optional
by calling the sock_bindtoindex with lock_sk = true.

The modification applied to all users of the sock_bindtoindex.

Change-Id: I9dc573d405527847ceeaa8d5d04f0c90fb5ab874
Signed-off-by: Ferenc Fejes <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Link: https://lore.kernel.org/bpf/bee6355da40d9e991b2f2d12b67d55ebb5f5b207.1590871065.git.fejes@inf.elte.hu
This commit is contained in:
Ferenc Fejes 2020-05-30 23:09:00 +02:00 • committed by basamaryan
commit 7d942dce7e
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4 changed files with 9 additions and 7 deletions
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2
net/ipv4/udp_tunnel.c
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@ -22,7 +22,7 @@ int udp_sock_create4(struct net *net, struct udp_port_cfg *cfg,
goto error;
if (cfg->bind_ifindex) {
err = sock_bindtoindex(sock->sk, cfg->bind_ifindex);
err = sock_bindtoindex(sock->sk, cfg->bind_ifindex, true);
if (err < 0)
goto error;
}