From: Eric Dumazet <eduma...@google.com>
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 <eduma...@google.com>
Cc: Lorenzo Colitti <lore...@google.com>
---
net/ipv4/tcp.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 2c0e340518d2..cc7aaa507abf 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;
}
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