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 76808A055A; Tue, 25 Feb 2020 16:51:45 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 415882C02; Tue, 25 Feb 2020 16:51:44 +0100 (CET) Received: from dispatch1-us1.ppe-hosted.com (dispatch1-us1.ppe-hosted.com [148.163.129.52]) by dpdk.org (Postfix) with ESMTP id 88683A3 for ; Tue, 25 Feb 2020 16:51:42 +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-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id 953B9100080; Tue, 25 Feb 2020 15:51:40 +0000 (UTC) Received: from [192.168.38.17] (10.17.10.39) by ukex01.SolarFlarecom.com (10.17.10.4) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 25 Feb 2020 15:51:33 +0000 To: Ferruh Yigit , Neil Horman , John McNamara , "Marko Kovacevic" CC: , Jerin Jacob , David Marchand , Thomas Monjalon References: <20200217153805.888130-1-ferruh.yigit@intel.com> <20200225124431.4088444-1-ferruh.yigit@intel.com> 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 of4kZ8PdoMM+Sq1hxMPNtlcVBSP9xMmdSZPlfDYI5VWosOceEcz7XZdjBJKdwKuz70V7eac4 ITSxgNFCTbeJ03zL2MR5s0IvD9ghISAwZ6ieCjU5UATn5+63qpD0nVNLsAdb/UpfvQcKAmvj 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Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <20200225124431.4088444-1-ferruh.yigit@intel.com> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Language: en-US X-Originating-IP: [10.17.10.39] X-ClientProxiedBy: ocex03.SolarFlarecom.com (10.20.40.36) To ukex01.SolarFlarecom.com (10.17.10.4) X-TM-AS-Product-Ver: SMEX-12.5.0.1300-8.5.1020-25252.003 X-TM-AS-Result: No-10.895900-8.000000-10 X-TMASE-MatchedRID: fE0JoqABJp3mLzc6AOD8DfHkpkyUphL9M0wEwxpnA/7Lkl8e9W70i3jm 0APnwZU22dHEsrnI/tq4Rt1oNt5z9aH2g9syPs88boe6sMfg+k9kAa0IkTbdiJb9wfEWdZoY/pE 4pKve7n8tTEJALEmm0vL5cWtbde9AYlldA0POS1IUaS/iLVoC5rvGYJkNeu61abJxhiIFjJn6ql eT2/y7BSJH06iuJzm5/FbT2/LT1haiN61W1OfKwY6cpbnLdja9jxlxHm47Dzp+SLLtNOiBhophv cx5CjEQyjDvTlT/AHU7wxXRVz1snWm3SnkbLZr6R/j040fRFpJ0HPaew1kGCRqB+wKK9uZeN8y5 luO/M1TbUZ9/I+masnncy2+f1VaQDOC9GmR8egFR5q8plSdLkB0/x6R8nZMSmyiLZetSf8nJ4y0 wP1A6AKEwgORH8p/AjaPj0W1qn0Q7AFczfjr/7DIc7aL1l00JtS9WPd4VZIbushFXKcwMEcLYnc VgD4+5uRDaCAfx5wA= X-TM-AS-User-Approved-Sender: Yes X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--10.895900-8.000000 X-TMASE-Version: SMEX-12.5.0.1300-8.5.1020-25252.003 X-MDID: 1582645901-QvHvlvqtfBsH Subject: Re: [dpdk-dev] [PATCH v2] doc: plan splitting the ethdev ops struct 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 2/25/20 3:44 PM, Ferruh Yigit wrote: > For the ABI compatibility it is better to hide internal data structures > from the application as much as possible. But because of some inline > functions 'struct eth_dev_ops' can't be hidden completely. > > Plan is to split the 'struct eth_dev_ops' into two as ones used by > inline functions and ones not used, and hide the second part that not > used by inline functions completely to the application. > > Signed-off-by: Ferruh Yigit > Acked-by: Jerin Jacob > --- > Cc: David Marchand > Cc: Thomas Monjalon > Cc: Andrew Rybchenko > > v2: > * Add target date for the work > * Give more detail on what will be done > --- > doc/guides/rel_notes/deprecation.rst | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst > index 99d81564a..ff612a615 100644 > --- a/doc/guides/rel_notes/deprecation.rst > +++ b/doc/guides/rel_notes/deprecation.rst > @@ -86,6 +86,17 @@ Deprecation Notices > In 19.11 PMDs will still update the field even when the offload is not > enabled. > > +* ethdev: Split the ``struct eth_dev_ops`` struct to hide it as much as possible. > + Currently the ``struct eth_dev_ops`` struct is accessible by the application > + because some inline functions, like ``rte_eth_tx_descriptor_status()``, > + access the struct directly. The struct will be separate in two, the ops used > + by inline functions still will be accessible to user but rest will be hidden. > + Initial split will be done in 20.05 with adding reserved fields for the struct > + used by inline functions, and by putting new struct reference into public one > + to not increase the size of ``struct rte_eth_dev``, proper split will be done > + in 20.11 by moving inline dev_ops function to next to Rx/Tx burst functions and > + hiding rest. > + > * cryptodev: support for using IV with all sizes is added, J0 still can > be used but only when IV length in following structs ``rte_crypto_auth_xform``, > ``rte_crypto_aead_xform`` is set to zero. When IV length is greater or equal I'd like to understand why do we need an intermediate solution first. Also rereading above few times I've failed to fully understand what will be done and why it does not break API/ABI.