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net: diag: Support destroying TCP sockets.

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This implements SOCK_DESTROY for TCP sockets. It causes all
blocking calls on the socket to fail fast with ECONNABORTED and
causes a protocol close of the socket. It informs the other end
of the connection by sending a RST, i.e., initiating a TCP ABORT
as per RFC 793. ECONNABORTED was chosen for consistency with
FreeBSD.

Signed-off-by: Lorenzo Colitti <lorenzo@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lorenzo Colitti 2015-12-16 12:30:05 +09:00 • committed by David S. Miller
parent 6eb5d2e08f
commit c1e64e298b
6 changed files with 68 additions and 0 deletions
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1
net/ipv4/tcp_ipv4.c
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@ -2342,6 +2342,7 @@ struct proto tcp_prot = {
.destroy_cgroup = tcp_destroy_cgroup,
.proto_cgroup = tcp_proto_cgroup,
#endif
.diag_destroy = tcp_abort,
};
EXPORT_SYMBOL(tcp_prot);