From patchwork Thu Dec 10 16:07:32 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Huawei@dpdk.org, Xie@dpdk.org X-Patchwork-Id: 9496 X-Patchwork-Delegate: bruce.richardson@intel.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id ABD338E80; Fri, 11 Dec 2015 15:22:02 +0100 (CET) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by dpdk.org (Postfix) with ESMTP id A6B458E71 for ; Fri, 11 Dec 2015 09:02:25 +0100 (CET) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga103.jf.intel.com with ESMTP; 11 Dec 2015 00:02:24 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,412,1444719600"; d="scan'208";a="858654592" Received: from dpdk15.sh.intel.com ([10.239.129.25]) by fmsmga001.fm.intel.com with ESMTP; 11 Dec 2015 00:02:23 -0800 From: Huawei@dpdk.org, Xie@dpdk.org To: dev@dpdk.org Date: Fri, 11 Dec 2015 00:07:32 +0800 Message-Id: <1449763652-86292-1-git-send-email-huawei.xie@intel.com> X-Mailer: git-send-email 1.8.1.4 X-Mailman-Approved-At: Fri, 11 Dec 2015 15:22:01 +0100 Subject: [dpdk-dev] [PATCH] virtio: fix virtio_net_hdr desc pointing to the same buffer X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" The virtio_net_hdr desc all pointed to the same buffer. It doesn't cause issue because in the simple TX mode we don't use the header. This patch makes the header desc point to different buffer. Signed-off-by: Huawei Xie Acked-by: Jianfeng Tan Acked-by: Yuanhan Liu --- drivers/net/virtio/virtio_rxtx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/virtio/virtio_rxtx.c b/drivers/net/virtio/virtio_rxtx.c index 74b39ef..6cfd315 100644 --- a/drivers/net/virtio/virtio_rxtx.c +++ b/drivers/net/virtio/virtio_rxtx.c @@ -352,7 +352,7 @@ virtio_dev_vring_start(struct virtqueue *vq, int queue_type) vq->vq_ring.desc[i + mid_idx].next = i; vq->vq_ring.desc[i + mid_idx].addr = vq->virtio_net_hdr_mem + - mid_idx * vq->hw->vtnet_hdr_size; + i * vq->hw->vtnet_hdr_size; vq->vq_ring.desc[i + mid_idx].len = vq->hw->vtnet_hdr_size; vq->vq_ring.desc[i + mid_idx].flags =