From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 96A21A0513; Wed, 15 Jan 2020 16:40:47 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 21E511BF8E; Wed, 15 Jan 2020 16:40:47 +0100 (CET) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by dpdk.org (Postfix) with ESMTP id BB2351BF88; Wed, 15 Jan 2020 16:40:44 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 15 Jan 2020 07:40:43 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,322,1574150400"; d="scan'208";a="219308533" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.35]) ([10.237.221.35]) by fmsmga007.fm.intel.com with ESMTP; 15 Jan 2020 07:40:41 -0800 To: Maxime Coquelin , Xuan Ding , tiwei.bie@intel.com, zhihong.wang@intel.com, yong.liu@intel.com, xiaolong.ye@intel.com Cc: dev@dpdk.org, stable@dpdk.org References: <20191223072519.18899-1-xuan.ding@intel.com> <20200115061358.5666-1-xuan.ding@intel.com> <2bbfce86-c26a-a93d-3ac4-fb8b18572f8f@redhat.com> From: Ferruh Yigit Autocrypt: addr=ferruh.yigit@intel.com; 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charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [dpdk-stable] [PATCH v5] net/virtio-user: fix packed ring server mode X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On 1/15/2020 11:16 AM, Maxime Coquelin wrote: > > > On 1/15/20 7:13 AM, Xuan Ding wrote: >> This patch fixes the situation where data path does not work properly when >> vhost reconnects to virtio in server mode with packed ring. >> >> Currently, virtio and vhost share memory of vring. For split ring, vhost >> can read the status of descriptors directly from the available ring and >> the used ring during reconnection. Therefore, the data path can continue. >> >> But for packed ring, when reconnecting to virtio, vhost cannot get the >> status of descriptors via the descriptor ring. By resetting Tx >> and Rx queues, the data path can restart from the beginning. >> >> Fixes: 4c3f5822eb214 ("net/virtio: add packed virtqueue defines") >> Cc: stable@dpdk.org >> >> Signed-off-by: Xuan Ding >> --- >> >> v5: >> * Fixed two spelling mistakes in the commit log. >> * Added notice message when resetting vring. >> >> v4: >> * Moved change log below '---' marker. >> >> v3: >> * Removed an extra asterisk from a comment. >> * Renamed device reset function and moved it to virtio_user_ethdev.c. >> >> v2: >> * Renamed queue reset functions and moved them to virtqueue.c. >> --- >> drivers/net/virtio/virtio_ethdev.c | 4 +- >> drivers/net/virtio/virtio_user_ethdev.c | 42 +++++++++++++++ >> drivers/net/virtio/virtqueue.c | 71 +++++++++++++++++++++++++ >> drivers/net/virtio/virtqueue.h | 4 ++ >> 4 files changed, 119 insertions(+), 2 deletions(-) > > Applied to dpdk-next-virtio/master > This was causing build error [1] on cross compilation [2], I am fixing it while merging [3], please double check in next-net. [1] .../drivers/net/virtio/virtio_user_ethdev.c:44:2: error: implicit declaration of function ‘rte_delay_ms’; did you mean ‘rte_realloc’? [-Werror=implicit-function-declaration] rte_delay_ms(1); [2] CROSS=/opt/aarch64/bin/aarch64-buildroot-linux-gnu- make -j64 [3] diff --git a/drivers/net/virtio/virtio_user_ethdev.c b/drivers/net/virtio/virtio_user_ethdev.c index 9c9d3407f..f3b35d1bd 100644 --- a/drivers/net/virtio/virtio_user_ethdev.c +++ b/drivers/net/virtio/virtio_user_ethdev.c @@ -13,6 +13,7 @@ #include #include #include +#include #include "virtio_ethdev.h" #include "virtio_logs.h"