From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:47320 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727410AbeHWL4j (ORCPT ); Thu, 23 Aug 2018 07:56:39 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, AMG Zollner Robert , David Ahern , Casey Leedom , Ganesh Goudar , "David S. Miller" , Sasha Levin Subject: [PATCH 4.14 081/217] cxgb4: when disabling dcb set txq dcb priority to 0 Date: Thu, 23 Aug 2018 09:53:14 +0200 Message-Id: <20180823075509.153284546@linuxfoundation.org> In-Reply-To: <20180823075505.090246914@linuxfoundation.org> References: <20180823075505.090246914@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ganesh Goudar [ Upstream commit 5ce36338a30f9814fc4824f9fe6c20cd83d872c7 ] When we are disabling DCB, store "0" in txq->dcb_prio since that's used for future TX Work Request "OVLAN_IDX" values. Setting non zero priority upon disabling DCB would halt the traffic. Reported-by: AMG Zollner Robert CC: David Ahern Signed-off-by: Casey Leedom Signed-off-by: Ganesh Goudar Signed-off-by: David S. Miller Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c @@ -253,7 +253,7 @@ static void dcb_tx_queue_prio_enable(str "Can't %s DCB Priority on port %d, TX Queue %d: err=%d\n", enable ? "set" : "unset", pi->port_id, i, -err); else - txq->dcb_prio = value; + txq->dcb_prio = enable ? value : 0; } }