From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ursula Braun Subject: [patch 3/5] [PATCH] af_iucv: Reject incoming msgs if RECV_SHUTDOWN is set Date: Tue, 21 Apr 2009 18:04:22 +0200 Message-ID: <20090421161444.563541000@linux.vnet.ibm.com> References: <20090421160419.971500000@linux.vnet.ibm.com> Cc: schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, Hendrik Brueckner , Ursula Braun To: davem@davemloft.net, netdev@vger.kernel.org, linux-s390@vger.kernel.org Return-path: Received: from mtagate8.de.ibm.com ([195.212.29.157]:58947 "EHLO mtagate8.de.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753547AbZDUQOu (ORCPT ); Tue, 21 Apr 2009 12:14:50 -0400 Content-Disposition: inline; filename=604-af_iucv-rej-msgs.diff Sender: netdev-owner@vger.kernel.org List-ID: From: Hendrik Brueckner 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 Signed-off-by: Ursula Braun --- net/iucv/af_iucv.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) Index: net-2.6-uschi/net/iucv/af_iucv.c =================================================================== --- net-2.6-uschi.orig/net/iucv/af_iucv.c +++ net-2.6-uschi/net/iucv/af_iucv.c @@ -1116,8 +1116,10 @@ static void iucv_callback_rx(struct iucv 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))