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 1B99EA0524; Fri, 31 Jan 2020 10:07:08 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id DE40F1C0BD; Fri, 31 Jan 2020 10:07:06 +0100 (CET) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by dpdk.org (Postfix) with ESMTP id 4A7EF1C044 for ; Fri, 31 Jan 2020 10:07:05 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 31 Jan 2020 01:07:03 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,385,1574150400"; d="scan'208";a="247672397" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.61]) ([10.237.221.61]) by orsmga002.jf.intel.com with ESMTP; 31 Jan 2020 01:07:01 -0800 To: "Ananyev, Konstantin" , Thomas Monjalon , Anoob Joseph , "akhil.goyal@nxp.com" , "Trahe, Fiona" Cc: "dev@dpdk.org" , David Marchand , "Richardson, Bruce" , "nhorman@tuxdriver.com" , "Mcnamara, John" , "Kusztal, ArkadiuszX" References: <20191220152058.10739-1-david.marchand@redhat.com> <2118076.C4sosBPzcN@xps> From: Ferruh Yigit Autocrypt: addr=ferruh.yigit@intel.com; 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charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-dev] [PATCH v2 4/4] add ABI checks 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 1/30/2020 11:49 PM, Ananyev, Konstantin wrote: > > >> -----Original Message----- >> From: dev On Behalf Of Thomas Monjalon >> Sent: Thursday, January 30, 2020 4:00 PM >> To: Anoob Joseph ; akhil.goyal@nxp.com; Trahe, Fiona >> Cc: dev@dpdk.org; David Marchand ; Richardson, Bruce ; >> nhorman@tuxdriver.com; Mcnamara, John ; Trahe, Fiona ; Kusztal, ArkadiuszX >> ; Yigit, Ferruh >> Subject: Re: [dpdk-dev] [PATCH v2 4/4] add ABI checks >> >> 30/01/2020 14:06, Trahe, Fiona: >>> We were unaware the LIST_END change could constitute an ABI breakage, but can see how it affects the array size when picked up. >>> We're exploring options. >>> >>> I agree with Anoob's point that if we don't allow the LIST_END to be modified, then it means no feature can be implemented without ABI >> breakage. >>> Anyone object to removing those LIST_END elements - or have a better suggestion? Would have to be in 20.11 I suppose. >> >> Yes, having max value right after the last value is ridiculous, >> it prevents adding any value. >> In 20.11, we should remove all these *_END and *_MAX from API enums >> and replace them with a separate #define with reasonnable maximums. >> > > I think we'd better avoid public structs that have array of _MAX elems in them. > That should fix, but we need to wait for 20.11 for the change, and what should be the new array size?