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net/tcp: Limit TCP_AO_REPAIR to non-listen sockets

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Listen socket is not an established TCP connection, so
setsockopt(TCP_AO_REPAIR) doesn't have any impact.

Restrict this uAPI for listen sockets.

Fixes: faadfaba5e ("net/tcp: Add TCP_AO_REPAIR")
Signed-off-by: Dmitry Safonov <dima@arista.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Dmitry Safonov 2023-12-04 19:00:42 +00:00 committed by Paolo Abeni
parent da7dfaa6d6
commit 965c00e4ea
1 changed files with 6 additions and 0 deletions
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6
net/ipv4/tcp.c
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@ -3610,6 +3610,10 @@ int do_tcp_setsockopt(struct sock *sk, int level, int optname,
break;
case TCP_AO_REPAIR:
if (!tcp_can_repair_sock(sk)) {
err = -EPERM;
break;
}
err = tcp_ao_set_repair(sk, optval, optlen);
break;
#ifdef CONFIG_TCP_AO
@ -4309,6 +4313,8 @@ zerocopy_rcv_out:
}
#endif
case TCP_AO_REPAIR:
if (!tcp_can_repair_sock(sk))
return -EPERM;
return tcp_ao_get_repair(sk, optval, optlen);
case TCP_AO_GET_KEYS:
case TCP_AO_INFO: {