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 14006A0487 for ; Mon, 1 Jul 2019 15:06:30 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 305521B974; Mon, 1 Jul 2019 15:06:29 +0200 (CEST) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by dpdk.org (Postfix) with ESMTP id 172A71B970 for ; Mon, 1 Jul 2019 15:06:27 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 01 Jul 2019 06:05:17 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,439,1557212400"; d="scan'208";a="154076185" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.30]) ([10.237.221.30]) by orsmga007.jf.intel.com with ESMTP; 01 Jul 2019 06:05:15 -0700 To: Andrew Rybchenko , viveksharma@marvell.com, thomas@monjalon.net Cc: dev@dpdk.org, intoviveksharma@gmail.com, stephen@networkplumber.org, ramirose@gmail.com, Jerin Jacob Kollanukkaran References: <1555486846-20764-1-git-send-email-viveksharma@marvell.com> <1555653564-27263-1-git-send-email-viveksharma@marvell.com> <6d469b41-7261-34d2-3c20-9aa32b0042ce@solarflare.com> From: Ferruh Yigit Openpgp: preference=signencrypt Autocrypt: addr=ferruh.yigit@intel.com; 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WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: <6d469b41-7261-34d2-3c20-9aa32b0042ce@solarflare.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH v3] ethdev: support QinQ strip dynamic configuration 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 7/1/2019 11:07 AM, Andrew Rybchenko wrote: > On 27.06.2019 14:08, Ferruh Yigit wrote: >> On 4/19/2019 6:59 AM, viveksharma@marvell.com wrote: >>> From: Vivek Sharma >>> >>> Enable missing support for runtime configuration (setting/getting) >>> of QinQ strip rx offload for a given ethdev. >>> >>> Signed-off-by: Vivek Sharma >> <...> >> >>> diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h >>> index 40a068f..c1792f4 100644 >>> --- a/lib/librte_ethdev/rte_ethdev.h >>> +++ b/lib/librte_ethdev/rte_ethdev.h >>> @@ -550,11 +550,13 @@ struct rte_eth_rss_conf { >>> #define ETH_VLAN_STRIP_OFFLOAD 0x0001 /**< VLAN Strip On/Off */ >>> #define ETH_VLAN_FILTER_OFFLOAD 0x0002 /**< VLAN Filter On/Off */ >>> #define ETH_VLAN_EXTEND_OFFLOAD 0x0004 /**< VLAN Extend On/Off */ >>> +#define ETH_QINQ_STRIP_OFFLOAD 0x0008 /**< QINQ Strip On/Off */ >>> >>> /* Definitions used for mask VLAN setting */ >>> #define ETH_VLAN_STRIP_MASK 0x0001 /**< VLAN Strip setting mask */ >>> #define ETH_VLAN_FILTER_MASK 0x0002 /**< VLAN Filter setting mask*/ >>> #define ETH_VLAN_EXTEND_MASK 0x0004 /**< VLAN Extend setting mask*/ >>> +#define ETH_QINQ_STRIP_MASK 0x0008 /**< QINQ Strip setting mask */ >>> #define ETH_VLAN_ID_MAX 0x0FFF /**< VLAN ID is in lower 12 bits*/ >> On its own patch looks ok but a few high level questions: >> >> 1- Why we need this interim defines, instead of using actual offload values? >> Although changing this will be API/ABI breakage. >> >> 2- Why we have specific function to set vlan offloads, for other offloads the >> way is stop device and reconfigure it with new offload flags. >> >> 3- If devices can change offload configuration dynamically, do we need a generic >> API to alter the offload configs? (similar to these vlan APIs but more generic)? > > If dynamic switching of offloads is really required, I think it would be > good if it is unified. If so, we can deprecate > rte_eth_dev_{s,g}et_vlan_offload() and implement it using the new one > to remove the old one from driver interface at least. > It requires reporting of dynamically switchable offloads on device and > queue level. Or just dynamically switchable offloads in assumption that > if the offload is supported on queue level and dynamically switchable, > it is dynamically switchable on queue level. Not sure if "dynamic switching of offloads" required, but I agree we may need to add "dynamically switchable offload" reporting for that. > >> Related to the patch, what do you think about following options: >> a) >> - Get this patch >> - Send a deprecation notice for 1) in this release >> - Next release remove these flags, which will be practically reverse this patch >> and more >> >> b) >> - Send a deprecation notice for 1) in this release >> - Next release update the APIs and a smaller/different version of this patch >> will be required. > > I'm OK with both options, but I think it would be fair to go (a) to avoid > postponing of the feature too long. OK > > The patch itself should update rte_eth_dev_{s,g}et_vlan_offload() > descriptions which enumerate switchable offloads. +1 @Vivek, can you please send a new version with this update?