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 9111AA04C1; Fri, 22 Nov 2019 11:12:37 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 031F5235; Fri, 22 Nov 2019 11:12:37 +0100 (CET) Received: from dispatch1-us1.ppe-hosted.com (dispatch1-us1.ppe-hosted.com [67.231.154.164]) by dpdk.org (Postfix) with ESMTP id A3C0691 for ; Fri, 22 Nov 2019 11:12:35 +0100 (CET) X-Virus-Scanned: Proofpoint Essentials engine Received: from webmail.solarflare.com (uk.solarflare.com [193.34.186.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mx1-us2.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id 3AFC7280064; Fri, 22 Nov 2019 10:12:34 +0000 (UTC) Received: from [192.168.38.17] (91.220.146.112) by ukex01.SolarFlarecom.com (10.17.10.4) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 22 Nov 2019 10:12:27 +0000 To: Thomas Monjalon CC: Ferruh Yigit , Pavan Nikhilesh , Neil Horman , "John McNamara" , Marko Kovacevic , References: <1574165145-23960-1-git-send-email-arybchenko@solarflare.com> <1574165536-2586-1-git-send-email-arybchenko@solarflare.com> <1574165536-2586-3-git-send-email-arybchenko@solarflare.com> <3628380.zSPWDRPf13@xps> From: Andrew Rybchenko Autocrypt: addr=arybchenko@solarflare.com; keydata= mQINBF2681gBEACbdTxu8eLL3UX2oAelsnK9GkeaJeUYSOHPJQpV7RL/iaIskqTwBRnhjXt7 j9UEwGA+omnOmqQMpeQTb/F9Ma2dYE+Hw4/t/1KVjxr3ehFaASvwR4fWJfO4e2l/Rk4rG6Yi 5r6CWU2y8su2654Fr8KFc+cMGOAgKoZTZHZsRy5lHpMlemeF+VZkv8L5sYJWPnsypgqlCG3h v6lbtfZs+QqYbFH6bqoZwBAl5irmxywGR7ZJr1GLUZZ1lfdazSY8r6Vz0/Ip/KVxGu2uxo81 QCsAj0ZsQtwji9Sds/prTiPrIjx8Fc/tfbnAuVuPcnPbczwCJACzQr4q26XATL3kVuZhSBWh 4XfO/EAUuEq5AemUG5DDTM87g7Lp4eT9gMZB6P+rJwWPNWTiV3L7Cn+fO+l9mTPnOqdzBgDe OaulKiNSft1o0DY4bGzOmM2ad2cZt0jfnbMPMTE9zsr6+RFa+M8Ct20o6U1MUE4vP6veErMK 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4VPLn5aAcfbCXJnE3IGCp/hPl50iQqu7BPOYBbWXeb9ptDjGCAThNxSz0WAXkmcjAFE8gdE6 Znk9 Message-ID: <7f1ca296-d4b0-e11b-7a70-50379de831c4@solarflare.com> Date: Fri, 22 Nov 2019 13:12:10 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: <3628380.zSPWDRPf13@xps> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Language: en-US X-Originating-IP: [91.220.146.112] X-ClientProxiedBy: ocex03.SolarFlarecom.com (10.20.40.36) To ukex01.SolarFlarecom.com (10.17.10.4) X-TM-AS-Product-Ver: SMEX-12.5.0.1300-8.5.1010-25058.003 X-TM-AS-Result: No-14.698900-8.000000-10 X-TMASE-MatchedRID: dL10VBB8yof4ECMHJTM/ufZvT2zYoYOwofZV/2Xa0cKNTrsIz649BGcu Y4ix4PoK+9E9zjm1EULClgCVDis8Kh2k1vtl2oj3JNzc11O35npbnEbdz0P1q+QydRUvl3QTI8N 6TI0jBjudssHnNcMsHfBkEhMPw8DLGHMruoCVNIuEhXJ95BMUPN36/RwkiJ0fbPfGfHxv+pEnnR Ws3D0zibOxW2s2drMDwH1WhgCHp+Zv6Yq1TxQF1D2gUycsvOMFvMRNh9hLjFnwOeqRlsRlmIvay LFEp1z+cj0iO6FDqrdUF9hshTUrsGPdR+nkNacr081phgl5F/kZSo6PM4LsikYza41dGqxSG8Zv 6Tdzi3gbPNI+VkYJUREgyQvw4dcpZPG1/fZbmYswo+sXt0rnszsgUw68UQrYfkiy7TTogYY8ACE MWwLcg4nwNf7KkDIHhOEWE7FcCBfUBIEM4OQ6eFLFinzH90Wn9fvWztwgm5MoFW8VuxQzlWV1sw hZDnWxTvVMSfL26EkwBA+b5B6rmqe6jDzI71t5joyKzEmtrEePOV9J7oRhr5soi2XrUn/JyeMtM D9QOgBKWdTfwsJjy1ZFWWuOwo7w3QfwsVk0UbtuRXh7bFKB7qWcwOhnvJC4Xaj5F63zXh/B/jYL 1eUVegMkqFZnIO2+66XHIc5w+gc= X-TM-AS-User-Approved-Sender: Yes X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--14.698900-8.000000 X-TMASE-Version: SMEX-12.5.0.1300-8.5.1010-25058.003 X-MDID: 1574417555-up0apyz3uxBt Subject: Re: [dpdk-dev] [PATCH v2 3/3] ethdev: improve flow mark Rx offload deprecation notice 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 11/22/19 1:01 AM, Thomas Monjalon wrote: > 19/11/2019 13:12, Andrew Rybchenko: >> The deprecation notice is required since it adds more requirements >> when RTE flow mark and flag actions may be used and require >> changes in applications. > I am still not sure what is the best solution here. > I continued to think about it in this thread: > http://mails.dpdk.org/archives/dev/2019-November/151960.html > > I think we cannot require any application change until 20.11 > in order to keep API (and behaviour) compatibility. Expected, but still very disappointing. The feature is implemented by Pavan (@ Marvell), supported by me, used by Qi (@ Intel), looks better than alternatives from application developer point of view [1] and finally postponed for 1 year without really strong motivation. I disagree that it is tightly related to moving mark/flag to dynamic field/flag and absolutely blocked by it. Yes, I know that the are concerns from the very beginning, but the problem is explained [2] and clear and no full-featured alternative solution is suggested. Solution suggested by Ori has many significant drawbacks as explained in [2] and highlighted in further discussion. [1] http://inbox.dpdk.org/dev/1573203631946.15959@kth.se/ [2] http://inbox.dpdk.org/dev/f170105b-9c60-1b04-cb18-52e0951ddcdb@solarflare.com/ > If something would be implemented in 20.02, > it must be a new and optional API. Flow mark and flag may work without the offload with some drivers, but some drivers require the offload to make it work. Flow API error should contain message which says that the offload is disabled and must be enabled. > That's why I think no deprecation notice is required. > > [...] >> +* ethdev: New offload flag ``DEV_RX_OFFLOAD_FLOW_MARK`` will be added in 20.02. >> + This will provide application an information if ``RTE_FLOW_ACTION_TYPE_MARK`` >> + or ``RTE_FLOW_ACTION_TYPE_FLAG`` is supported and, what is more important, >> + allow an application to let PMD know that it would like to use these >> + features. >> + PMD may use the information to choose optimal datapath implementation and >> + configure HW appropriately to optimize performance and/or resources usage.