From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7AFD4CDB482 for ; Tue, 17 Oct 2023 17:26:18 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 34783821C3; Tue, 17 Oct 2023 17:26:18 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp1.osuosl.org 34783821C3 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=osuosl.org; s=default; t=1697563578; bh=71AX1k2MkeY51AS2SzAhrLvqs/PqbgcEEvRNksMbnqU=; h=Date:From:To:References:In-Reply-To:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: Cc:From; b=zt1lH5M3iAqj1gFTNl42uQ0nIuaI549rozDOZf91qyUKrpAgMNQJWAHfg47SNBdZa KW2aBecameYCO23YAHC6LYlMJ4aLhr/4vXc42rciqaHa3fBiklRpA9A0tjPGM4QcCY p/dTTcelr8U9w/BuHVWI2Dx4jwsZo9epyT+k8XqQXqdQi7hbgEGw7BVX6QsrTQ4/hb 7OOv0pDB2RnbsEppwRnB/b6eTI0M2tYDlpEmBvDL1E40yUHNoEGPfaAHZ+8xOQpQiE kmAhPS8HDJw0/H/RScCCqxMD+MkPBzY4qn+Ko556psB5XAr+cebFnN11lrt9BJLp/o wWFpDN+69PBuQ== X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id aDqMd_hkVc2C; Tue, 17 Oct 2023 17:26:17 +0000 (UTC) Received: from ash.osuosl.org (ash.osuosl.org [140.211.166.34]) by smtp1.osuosl.org (Postfix) with ESMTP id 2E3A8821C5; Tue, 17 Oct 2023 17:26:17 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp1.osuosl.org 2E3A8821C5 Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by ash.osuosl.org (Postfix) with ESMTP id D9EE71BF3A3 for ; Tue, 17 Oct 2023 06:35:47 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id A590F80F4E for ; Tue, 17 Oct 2023 06:35:47 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp1.osuosl.org A590F80F4E X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id yk9flaXYiqxx for ; Tue, 17 Oct 2023 06:35:46 +0000 (UTC) X-Greylist: delayed 1233 seconds by postgrey-1.37 at util1.osuosl.org; Tue, 17 Oct 2023 06:35:46 UTC DKIM-Filter: OpenDKIM Filter v2.11.0 smtp1.osuosl.org 62D3080E36 Received: from ganesha.gnumonks.org (ganesha.gnumonks.org [IPv6:2001:780:45:1d:225:90ff:fe52:c662]) by smtp1.osuosl.org (Postfix) with ESMTPS id 62D3080E36 for ; Tue, 17 Oct 2023 06:35:46 +0000 (UTC) Received: from uucp by ganesha.gnumonks.org with local-bsmtp (Exim 4.94.2) (envelope-from ) id 1qsdMA-003P2Q-Dk; Tue, 17 Oct 2023 08:15:06 +0200 Received: from laforge by nataraja with local (Exim 4.97-RC2) (envelope-from ) id 1qsdIe-000000020Oa-1ZtF; Tue, 17 Oct 2023 08:11:28 +0200 Date: Tue, 17 Oct 2023 08:11:28 +0200 From: Harald Welte To: Jakub Kicinski Message-ID: References: <20231012060115.107183-1-hayatake396@gmail.com> <20231016152343.1fc7c7be@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20231016152343.1fc7c7be@kernel.org> X-Mailman-Approved-At: Tue, 17 Oct 2023 17:25:58 +0000 Subject: Re: [Intel-wired-lan] [PATCH net-next v2] ethtool: ice: Support for RSS settings to GTP from ethtool X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Willem de Bruijn , netdev@vger.kernel.org, osmocom-net-gprs@lists.osmocom.org, Jesse Brandeburg , linux-kernel@vger.kernel.org, Eric Dumazet , Tony Nguyen , Takeru Hayasaka , intel-wired-lan@lists.osuosl.org, Paolo Abeni , "David S. Miller" , Pablo Neira Ayuso Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" Hi Jakub and others, On Mon, Oct 16, 2023 at 03:23:43PM -0700, Jakub Kicinski wrote: > Adding Willem, Pablo, and Harald to CC (please CC them on future > versions). thanks for that Cc, it's much appreciated! > My understanding of GTP is limited to what I just read on Wikipedia. If there are any specific questions, I'm very happy to respond to them. > IIUC the GTPC vs GTPU distinction comes down to the UDP port on > which the protocol runs? that is a convention. Similar to any other wll-known port > Are the frames also different? Yes, the message type is different. There is one specific message type used for GTP-U and lots of others for GTP-C. > I'm guessing UL/DL are uplink/downlink but what's EH? Surprisingly, I also am not familiar with "EH" in the context of GTP. It's an ancronym I don't recall reading in any related 3GPP spec. > Key question is - are there reasonable use cases that you can think of > for enabling GTP hashing for each one of those bits individually or can > we combine some of them? I cannot really comment on that, as I haven't yet been thinking about how RSS might potentially be used in GTPU use cases. I would also appreciate some enlightenment on that. What kind of network element/function are we talking about (my guess is an UPF). How does its architecture look like to spread GTPU flows across CPUs using RSS? This is by the way something that I've been also seeing with patches against the kernel gtp in recent years: People submit patches but are not explaining the use cases, so it's hard to judge how relevant this really is to most users. -- - Harald Welte https://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6) _______________________________________________ Intel-wired-lan mailing list Intel-wired-lan@osuosl.org https://lists.osuosl.org/mailman/listinfo/intel-wired-lan