From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by dpdk.org (Postfix) with ESMTP id 114C01E2F for ; Thu, 16 Aug 2018 10:54:58 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 16 Aug 2018 01:54:58 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.53,246,1531810800"; d="scan'208";a="66607531" Received: from irsmsx101.ger.corp.intel.com ([163.33.3.153]) by orsmga006.jf.intel.com with ESMTP; 16 Aug 2018 01:54:56 -0700 Received: from irsmsx107.ger.corp.intel.com ([169.254.10.116]) by IRSMSX101.ger.corp.intel.com ([169.254.1.40]) with mapi id 14.03.0319.002; Thu, 16 Aug 2018 09:54:55 +0100 From: "Dumitrescu, Cristian" To: "Xu, Rosen" , Jerin Jacob CC: "dev@dpdk.org" , "Lu, Wenzhuo" , "Singh, Jasvinder" , "Yigit, Ferruh" , "nithin.dabilpuram@cavium.com" Thread-Topic: [dpdk-dev] [RFC] ethdev: add tail drop API for traffic management Thread-Index: AQHUMtrE9rwHX+uv/0C8CDTEVRgsQ6S+syIAgAALFwCAA1kBwA== Date: Thu, 16 Aug 2018 08:54:55 +0000 Message-ID: <3EB4FA525960D640B5BDFFD6A3D891268E79E2D9@IRSMSX107.ger.corp.intel.com> References: <1534146812-120570-1-git-send-email-rosen.xu@intel.com> <20180814060528.GA21200@jerin> <0E78D399C70DA940A335608C6ED296D73A1CB17C@SHSMSX104.ccr.corp.intel.com> In-Reply-To: <0E78D399C70DA940A335608C6ED296D73A1CB17C@SHSMSX104.ccr.corp.intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-version: 11.0.400.15 dlp-reaction: no-action x-originating-ip: [163.33.239.180] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Subject: Re: [dpdk-dev] [RFC] ethdev: add tail drop API for traffic management 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: , X-List-Received-Date: Thu, 16 Aug 2018 08:54:59 -0000 > -----Original Message----- > From: Xu, Rosen > Sent: Tuesday, August 14, 2018 7:45 AM > To: Jerin Jacob > Cc: dev@dpdk.org; Dumitrescu, Cristian ; > Lu, Wenzhuo ; Singh, Jasvinder > ; Yigit, Ferruh ; > nithin.dabilpuram@cavium.com > Subject: RE: [dpdk-dev] [RFC] ethdev: add tail drop API for traffic > management >=20 >=20 >=20 > > -----Original Message----- > > From: Jerin Jacob [mailto:jerin.jacob@caviumnetworks.com] > > Sent: Tuesday, August 14, 2018 14:06 > > To: Xu, Rosen > > Cc: dev@dpdk.org; Dumitrescu, Cristian ; > Lu, > > Wenzhuo ; Singh, Jasvinder > > ; Yigit, Ferruh ; > > nithin.dabilpuram@cavium.com > > Subject: Re: [dpdk-dev] [RFC] ethdev: add tail drop API for traffic > > management > > > > -----Original Message----- > > > Date: Mon, 13 Aug 2018 15:53:32 +0800 > > > From: Rosen Xu > > > To: dev@dpdk.org > > > CC: cristian.dumitrescu@intel.com, wenzhuo.lu@intel.com, > > > jasvinder.singh@intel.com, rosen.xu@intel.com, ferruh.yigit@intel.com > > > Subject: [dpdk-dev] [RFC] ethdev: add tail drop API for traffic > > > management > > > X-Mailer: git-send-email 1.8.3.1 > > > > > > > > > This patch introduces new ethdev generic Tail Drop API for Traffic > > > Management, which is yet another standard congestion management > > > offload for Ethernet devices. > > > > > > Tail Drop is about packets dropping when they arrive on a congested > > > interface buffer. It's one mode of congestion management for hierarch= y > > > leaf nodes. > > > > > > There are two configuration parameters for Tail Drop: > > > 1. Buffer Depth: determine the depth of receive fifo for packet RX. > > This scheme is a sort of WRED-lite, so Rosen and I decided to look at fitti= ng the driver he's currently working on under the WRED scheme; we can take = another look at this if any significant issues are to be found (unlikely). Regards, Cristian