From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 4FF2E43272; Thu, 2 Nov 2023 22:22:09 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id DBE4B40262; Thu, 2 Nov 2023 22:22:08 +0100 (CET) Received: from mail-pg1-f181.google.com (mail-pg1-f181.google.com [209.85.215.181]) by mails.dpdk.org (Postfix) with ESMTP id 98CB340144 for ; Thu, 2 Nov 2023 22:22:07 +0100 (CET) Received: by mail-pg1-f181.google.com with SMTP id 41be03b00d2f7-5b8c39a2dceso1020594a12.2 for ; Thu, 02 Nov 2023 14:22:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1698960127; x=1699564927; darn=dpdk.org; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=lBDaoYUdqDTvC73ECUh/cBCbocDcMewexTaXuvAwVPE=; 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AGHT+IEGWycX81FAsqLh8zDk5RfIv6qtqDyWgC6OLRMZrWkM0t3X84Pl3UFY7WAInqVEb2PbZ+hOHX1mhfiQSAaH7xA= X-Received: by 2002:a05:6a20:258d:b0:156:851e:b167 with SMTP id k13-20020a056a20258d00b00156851eb167mr19531872pzd.44.1698960126533; Thu, 02 Nov 2023 14:22:06 -0700 (PDT) MIME-Version: 1.0 References: <20230203132810.14187-1-thomas@monjalon.net> <3a74993a-a37d-381a-f33f-49deff8f0f10@amd.com> <2634630.Isy0gbHreE@thomas> In-Reply-To: From: Ajit Khaparde Date: Thu, 2 Nov 2023 14:21:49 -0700 Message-ID: Subject: Re: [PATCH] drivers: remove compile-time option for IEEE 1588 To: Ferruh Yigit Cc: Thomas Monjalon , dev@dpdk.org, Aman Singh , Yuying Zhang , Somnath Kotur , Nithin Dabilpuram , Kiran Kumar K , Sunil Kumar Kori , Satha Rao , Hemant Agrawal , Sachin Saxena , Simei Su , Wenjun Wu , Qi Zhang , Xiao Wang , Beilei Xing , Qiming Yang , Jiawen Wu , Jian Wang Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="000000000000db69ad060931fa8c" X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org --000000000000db69ad060931fa8c Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Thu, Nov 2, 2023 at 2:13=E2=80=AFPM Ferruh Yigit = wrote: > > On 6/25/2023 4:45 PM, Thomas Monjalon wrote: > > 23/06/2023 16:00, Ferruh Yigit: > >> On 2/3/2023 1:28 PM, Thomas Monjalon wrote: > >>> The option RTE_LIBRTE_IEEE1588 has no effect on any library > >>> unlike its name. > >>> > >>> Also we are suppose to enable/disable features dynamically, > >>> not at compilation time. > >>> > >>> And the best is that this macro is neither documented, > >>> nor in rte_config.h. > >>> > >>> It looks to be a mistake keeping this flag, so it is removed, > >>> meaning always enabled. > >>> PS: it is disabling vector paths of some drivers. > >>> > >> > >> PTP (IEEE1588) processing brings additional overhead to datapath. > >> > >> Agree that it is not good to have undocumented compile macro, but just > >> removing it may cause performance degradation. > >> > >> It may be possible to have separate burst function that supports PTP a= nd > >> driver configures it when application explicitly request it with a new > >> offload flag (although it is not exactly an offload), what do you thin= k? > > > > The best is to enable dynamically with different functions. > > > > > > There was no comment from driver maintainers. > > Perhaps better option is plan flag removal and execute it, like to > remove the flag in 24.11 LTS, this gives enough time for drivers to updat= e. > > If this sounds good, I can send a deprecation notice to record this plan. +1 --000000000000db69ad060931fa8c Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic 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