From patchwork Wed Feb 2 16:04:33 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: frank.blaschka@de.ibm.com X-Patchwork-Id: 81472 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 61492B711F for ; Thu, 3 Feb 2011 03:05:40 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754542Ab1BBQFf (ORCPT ); Wed, 2 Feb 2011 11:05:35 -0500 Received: from mtagate4.uk.ibm.com ([194.196.100.164]:35094 "EHLO mtagate4.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754478Ab1BBQFd (ORCPT ); Wed, 2 Feb 2011 11:05:33 -0500 Received: from d06nrmr1507.portsmouth.uk.ibm.com (d06nrmr1507.portsmouth.uk.ibm.com [9.149.38.233]) by mtagate4.uk.ibm.com (8.13.1/8.13.1) with ESMTP id p12G5VcR002091; Wed, 2 Feb 2011 16:05:31 GMT Received: from d06av02.portsmouth.uk.ibm.com (d06av02.portsmouth.uk.ibm.com [9.149.37.228]) by d06nrmr1507.portsmouth.uk.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id p12G5YDs868594; Wed, 2 Feb 2011 16:05:34 GMT Received: from d06av02.portsmouth.uk.ibm.com (loopback [127.0.0.1]) by d06av02.portsmouth.uk.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id p12G5Uv7023857; Wed, 2 Feb 2011 09:05:31 -0700 Received: from tuxmaker.boeblingen.de.ibm.com (tuxmaker.boeblingen.de.ibm.com [9.152.85.9]) by d06av02.portsmouth.uk.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id p12G5UYO023850; Wed, 2 Feb 2011 09:05:30 -0700 Received: by tuxmaker.boeblingen.de.ibm.com (Postfix, from userid 24631) id 81BDE12243A0; Wed, 2 Feb 2011 17:05:30 +0100 (CET) Message-Id: <20110202160530.388560193@de.ibm.com> User-Agent: quilt/0.47-1 Date: Wed, 02 Feb 2011 17:04:33 +0100 From: frank.blaschka@de.ibm.com To: davem@davemloft.net Cc: netdev@vger.kernel.org, linux-s390@vger.kernel.org, Ursula Braun Subject: [patch 3/6] [PATCH] qeth: allow HiperSockets framesize change in suspend References: <20110202160430.554090958@de.ibm.com> Content-Disposition: inline; filename=607-qeth-chparm-change.diff Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Ursula Braun For HiperSockets the framesize-definition determines the selected mtu-size and the size of the allocated qdio buffers. A framesize-change may occur while a Linux system with probed HiperSockets device is in suspend state. This patch enables proper resuming of a HiperSockets device in this case. Signed-off-by: Ursula Braun Signed-off-by: Frank Blaschka --- drivers/s390/net/qeth_core_main.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -1887,8 +1887,16 @@ static int qeth_ulp_enable_cb(struct qet QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); return 0; } - card->info.max_mtu = mtu; + if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) { + /* frame size has changed */ + if (card->dev && + ((card->dev->mtu == card->info.initial_mtu) || + (card->dev->mtu > mtu))) + card->dev->mtu = mtu; + qeth_free_qdio_buffers(card); + } card->info.initial_mtu = mtu; + card->info.max_mtu = mtu; card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE; } else { card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);