Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933190Ab3EGB4I (ORCPT ); Mon, 6 May 2013 21:56:08 -0400 Received: from mga11.intel.com ([192.55.52.93]:29232 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932842Ab3EGB4D (ORCPT ); Mon, 6 May 2013 21:56:03 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.87,624,1363158000"; d="scan'208";a="333594772" From: Jon Mason To: linux-kernel@vger.kernel.org Cc: Dave Jiang Subject: [PATCH 06/10] NTB: reset tx_index on link toggle Date: Mon, 6 May 2013 18:55:25 -0700 Message-Id: <1367891729-11738-7-git-send-email-jon.mason@intel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1367891729-11738-1-git-send-email-jon.mason@intel.com> References: <1367891729-11738-1-git-send-email-jon.mason@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1333 Lines: 38 If the NTB link toggles, the driver could stop receiving due to the tx_index not being set to 0 on the transmitting size on a link-up event. This is due to the driver expecting the incoming data to start at the beginning of the receive buffer and not at a random place. Signed-off-by: Jon Mason --- drivers/ntb/ntb_transport.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c index be416d6..73a000e 100644 --- a/drivers/ntb/ntb_transport.c +++ b/drivers/ntb/ntb_transport.c @@ -505,6 +505,7 @@ static void ntb_transport_setup_qp_mw(struct ntb_transport *nt, qp->rx_pkts = 0; qp->tx_pkts = 0; + qp->tx_index = 0; } static void ntb_free_mw(struct ntb_transport *nt, int num_mw) @@ -819,7 +820,6 @@ static void ntb_transport_init_queue(struct ntb_transport *nt, qp->tx_mw = qp->rx_info + 1; qp->tx_max_frame = min(transport_mtu, tx_size); qp->tx_max_entry = tx_size / qp->tx_max_frame; - qp->tx_index = 0; if (nt->debugfs_dir) { char debugfs_name[4]; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/