From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S968045AbeEYSo6 (ORCPT ); Fri, 25 May 2018 14:44:58 -0400 Received: from szxga07-in.huawei.com ([45.249.212.35]:60913 "EHLO huawei.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S967992AbeEYSoy (ORCPT ); Fri, 25 May 2018 14:44:54 -0400 From: Salil Mehta To: CC: , , , , , , , Fuyun Liang Subject: [PATCH net-next 07/12] net: hns3: Fixes the init of the VALID BD info in the descriptor Date: Fri, 25 May 2018 19:43:02 +0100 Message-ID: <20180525184307.36288-8-salil.mehta@huawei.com> X-Mailer: git-send-email 2.8.3 In-Reply-To: <20180525184307.36288-1-salil.mehta@huawei.com> References: <20180525184307.36288-1-salil.mehta@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.202.227.234] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Fuyun Liang RX Buffer Descriptor contains a VALID bit which indicates if the BD is valid and has some data. This field is set by HNS3 hardware to intimate the driver of some valid data present in the BD. nd should be reset by the driver when BD is being used again. In the existing code this bit was not being (re-)initialized properly and hence was causing problems. Fixes: 76ad4f0ee747 ("net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC") Signed-off-by: Fuyun Liang Signed-off-by: Peng Li Signed-off-by: Salil Mehta --- drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index 1bcb676..d1ef104 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -1819,6 +1819,7 @@ static void hns3_replace_buffer(struct hns3_enet_ring *ring, int i, hns3_unmap_buffer(ring, &ring->desc_cb[i]); ring->desc_cb[i] = *res_cb; ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma); + ring->desc[i].rx.bd_base_info = 0; } static void hns3_reuse_buffer(struct hns3_enet_ring *ring, int i) @@ -1826,6 +1827,7 @@ static void hns3_reuse_buffer(struct hns3_enet_ring *ring, int i) ring->desc_cb[i].reuse_flag = 0; ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma + ring->desc_cb[i].page_offset); + ring->desc[i].rx.bd_base_info = 0; } static void hns3_nic_reclaim_one_desc(struct hns3_enet_ring *ring, int *bytes, -- 2.7.4