af_iucv: Reject incoming msgs if RECV_SHUTDOWN is set

Reject incoming iucv messages if the receive direction has been shut down.
It avoids that the queue of outstanding messages increases and exceeds the
message limit of the iucv communication path.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hendrik Brueckner 2009-04-21 06:04:22 +00:00 committed by David S. Miller
parent 60d3705fcb
commit fe86e54ef9

View File

@ -1116,8 +1116,10 @@ static void iucv_callback_rx(struct iucv_path *path, struct iucv_message *msg)
struct sock_msg_q *save_msg;
int len;
if (sk->sk_shutdown & RCV_SHUTDOWN)
if (sk->sk_shutdown & RCV_SHUTDOWN) {
iucv_message_reject(path, msg);
return;
}
if (!list_empty(&iucv->message_q.list) ||
!skb_queue_empty(&iucv->backlog_skb_q))