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 A0F07A0526; Tue, 21 Jul 2020 16:57:19 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 56FCE1BFF9; Tue, 21 Jul 2020 16:57:19 +0200 (CEST) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by dpdk.org (Postfix) with ESMTP id A5C291BFEE for ; Tue, 21 Jul 2020 16:57:17 +0200 (CEST) IronPort-SDR: ac5dgnGXrfuxd/Mpv8HkoFlSuCiCgJ4Q/kxDdj/aH9QGMh+gMavyH8oJ7/WvcfBmQ09Nb62Ws1 edmHFH03dhhA== X-IronPort-AV: E=McAfee;i="6000,8403,9689"; a="214796313" X-IronPort-AV: E=Sophos;i="5.75,379,1589266800"; d="scan'208";a="214796313" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Jul 2020 07:57:16 -0700 IronPort-SDR: nOt76tWMfa8aFMQ/8DzyZxPVpV+BLgwx8ftqjWYEcz0SmVYZypxvzEw8MvUJHks1oMXmecOyst PftePF4GkWzQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,379,1589266800"; 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charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH v3] vhost: fix wrong async completion of multi-seg packets 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 7/21/2020 9:40 AM, Maxime Coquelin wrote: > > > On 7/21/20 7:47 AM, patrick.fu@intel.com wrote: >> From: Patrick Fu >> >> In async enqueue copy, a packet could be split into multiple copy >> segments. When polling the copy completion status, current async data >> path assumes the async device callbacks are aware of the packet >> boundary and return completed segments only if all segments belonging >> to the same packet are done. Such assumption are not generic to common >> async devices and may degrees the copy performance if async callbacks > > s/degrees/degrades/ > >> have to implement it in software manner. >> >> This patch adds tracking of the completed copy segments at vhost side. >> If async copy device reports partial completion of a packets, only >> vhost internal record is updated and vring status keeps unchanged >> until remaining segments of the packet are also finished. The async >> copy device is no longer necessary to care about the packet boundary. >> >> Fixes: cd6760da1076 ("vhost: introduce async enqueue for split ring") >> >> Signed-off-by: Patrick Fu > > With above typo fixed (can be done when applying, no need to resend): > Reviewed-by: Maxime Coquelin > Applied to dpdk-next-net/master, thanks.