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tcp: diag: add support for request sockets to tcp_abort()

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Adding support for SYN_RECV request sockets to tcp_abort()
is quite easy after our tcp listener rewrite.

Note that we also need to better handle listeners, or we might
leak not yet accepted children, because of a missing
inet_csk_listen_stop() call.

[cherry-pick of net-next 07f6f4a31e]

Change-Id: I8ec6b2e6ec24f330a69595abf1d5469ace79b3fd
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Lorenzo Colitti <lorenzo@google.com>
Tested-by: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2015-12-17 16:14:11 -08:00
committed by Amit Pundir
parent 69f0e89f55
commit 2a5cf317a1
1 changed files with 9 additions and 0 deletions
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9
net/ipv4/tcp.c
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@@ -3104,6 +3104,15 @@ EXPORT_SYMBOL_GPL(tcp_done);
int tcp_abort(struct sock *sk, int err)
{
if (!sk_fullsock(sk)) {
if (sk->sk_state == TCP_NEW_SYN_RECV) {
struct request_sock *req = inet_reqsk(sk);
local_bh_disable();
inet_csk_reqsk_queue_drop_and_put(req->rsk_listener,
req);
local_bh_enable();
return 0;
}
sock_gen_put(sk);
return -EOPNOTSUPP;
}