From 07f6f4a31e5a8dee67960fc07bb0b37c5f879d4d Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 17 Dec 2015 16:14:11 -0800 Subject: [PATCH] tcp: diag: add support for request sockets to tcp_abort() 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. Signed-off-by: Eric Dumazet Cc: Lorenzo Colitti Tested-by: Lorenzo Colitti Signed-off-by: David S. Miller --- net/ipv4/tcp.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 2c0e340..cc7aaa5 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -3083,6 +3083,15 @@ 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; } -- 2.7.4