From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 02222C47409 for ; Wed, 11 Dec 2019 16:06:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CC5FB20836 for ; Wed, 11 Dec 2019 16:06:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576080373; bh=ugpmlOyr7TaG72VcGP0lAPfC8pVHr4pczswXTIfCbl4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ch+/B1zAFomXakT3ictpbKRQa2DsMYKuAqT3cScVI0OcHcqj/q2sbqTgY0wcB8DJn WLdf+aLImV9A6GjfQg3RyuVBV7fIOj9XL3QMe0cs7jwFrbkrl2Z6DXaAmJraJh97ud XArVqbOnI//te/nmzOTn4z/VJhCa4++DDIl2RoKs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733274AbfLKQGD (ORCPT ); Wed, 11 Dec 2019 11:06:03 -0500 Received: from mail.kernel.org ([198.145.29.99]:34968 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731216AbfLKPMp (ORCPT ); Wed, 11 Dec 2019 10:12:45 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5FC422465B; Wed, 11 Dec 2019 15:12:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576077163; bh=ugpmlOyr7TaG72VcGP0lAPfC8pVHr4pczswXTIfCbl4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vc0EfWpcv/rtU3Z2GkxywbTXa5uLhZPbzeuYy9ys16/JewZL8kiaqedhwP2SGc/23 daN1YtdwSAjk9NRsrhHfw5ZbDB3NdWtl9s8y6Yt5T7U/uhKIxtg5ocftJxmSxGk+w7 KcswZOmhsqoH7Z1eEuyt8uN/JN17xb9ZxyWtTZFI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Yunsheng Lin , Huazhong Tan , "David S. Miller" , Sasha Levin Subject: [PATCH 5.3 039/105] net: hns3: reallocate SSU buffer size when pfc_en changes Date: Wed, 11 Dec 2019 16:05:28 +0100 Message-Id: <20191211150236.251208894@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20191211150221.153659747@linuxfoundation.org> References: <20191211150221.153659747@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Yunsheng Lin [ Upstream commit aea8cfb35a82d6c2f3517c86694933ba766635e5 ] When a TC's PFC is disabled or enabled, the RX private buffer for this TC need to be changed too, otherwise this may cause packet dropped problem. This patch fixes it by calling hclge_buffer_alloc to reallocate buffer when pfc_en changes. Fixes: cacde272dd00 ("net: hns3: Add hclge_dcb module for the support of DCB feature") Signed-off-by: Yunsheng Lin Signed-off-by: Huazhong Tan Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- .../ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c index bac4ce13f6ae4..d9136a199d8db 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c @@ -302,6 +302,7 @@ static int hclge_ieee_setpfc(struct hnae3_handle *h, struct ieee_pfc *pfc) struct hclge_vport *vport = hclge_get_vport(h); struct hclge_dev *hdev = vport->back; u8 i, j, pfc_map, *prio_tc; + int ret; if (!(hdev->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) || hdev->flag & HCLGE_FLAG_MQPRIO_ENABLE) @@ -327,7 +328,21 @@ static int hclge_ieee_setpfc(struct hnae3_handle *h, struct ieee_pfc *pfc) hclge_tm_pfc_info_update(hdev); - return hclge_pause_setup_hw(hdev, false); + ret = hclge_pause_setup_hw(hdev, false); + if (ret) + return ret; + + ret = hclge_notify_client(hdev, HNAE3_DOWN_CLIENT); + if (ret) + return ret; + + ret = hclge_buffer_alloc(hdev); + if (ret) { + hclge_notify_client(hdev, HNAE3_UP_CLIENT); + return ret; + } + + return hclge_notify_client(hdev, HNAE3_UP_CLIENT); } /* DCBX configuration */ -- 2.20.1