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 smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (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 5575AC61DBE for ; Wed, 26 Aug 2026 20:20:54 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id EC0DD6060E; Wed, 26 Aug 2026 20:20:53 +0000 (UTC) X-Virus-Scanned: amavis at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP id B7ncygr2loKw; Wed, 26 Aug 2026 20:20:52 +0000 (UTC) X-Comment: SPF check N/A for local connections - client-ip=140.211.166.142; helo=lists1.osuosl.org; envelope-from=intel-wired-lan-bounces@osuosl.org; receiver= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=osuosl.org; s=default; t=1787775652; bh=sdBgprMEYcaiSUj0ygVN2sdfjT+LVmQNKAKHSXm0dYs=; h=Date:From:To:Cc:Subject:In-Reply-To:References:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=kNioGHdccMpSz8PM4jH18wMtsN1LY4ikhrgjmxZe9lcS1e2EQELYG0VsYUmldUTqu r5GzGrpE810QGa0XdXAN7vvekEp/lrF5d7iGvvrT9P9TolDlXJTw9MBd0hmxXk95d+ ls7sWhOtlkp0wO4e/MjucLlsG9qcFTt7OmpZ6u1RZ6XvnuXDtr1FBc/Bg/rfbztHaX VLx6mM1BbVM8tEJ9UD/bWrMWW99/NwHhNmeyAn05HCr5SejoNxdhMBvD09EtVKYXss 273dxIaCYitM5MeSa/cABJmWURGKLE7ZeXgnXFQgtP3oIC86r2+Q8XC9bVPGV0vWzf oycu27lFLl/EA== Received: from lists1.osuosl.org (lists1.osuosl.org [140.211.166.142]) by smtp3.osuosl.org (Postfix) with ESMTP id 18346605ED; Wed, 26 Aug 2026 20:20:52 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [IPv6:2605:bc80:3010::138]) by lists1.osuosl.org (Postfix) with ESMTP id 50097323 for ; Wed, 26 Aug 2026 20:20:51 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 4232D80E4D for ; Wed, 26 Aug 2026 20:20:51 +0000 (UTC) X-Virus-Scanned: amavis at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP id jWSc16WhJSxS for ; Wed, 26 Aug 2026 20:20:50 +0000 (UTC) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=172.105.4.254; helo=tor.source.kernel.org; envelope-from=kuba@kernel.org; receiver= Authentication-Results: smtp1.osuosl.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org Authentication-Results: smtp1.osuosl.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=Q294isjT Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by smtp1.osuosl.org (Postfix) with ESMTPS id 3B0FE80E42 for ; Wed, 26 Aug 2026 20:20:49 +0000 (UTC) Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id DF3E06011F; Wed, 26 Aug 2026 20:20:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6F8CE1F000E9; Wed, 26 Aug 2026 20:20:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1787775647; bh=sdBgprMEYcaiSUj0ygVN2sdfjT+LVmQNKAKHSXm0dYs=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=Q294isjThieFDrLugvFd1j77TaAVB2QAfsB3TQVc990b36f+1TuRDchhHGUOCTYmZ /qLud6mlMd5GX2gWFNZe7LJ+1QxL5wZWzZUyDBEUF7I9TXv5y2wYtUeu0+FCRaTzWY cAvQDhTC0CuVC1M7qyRBuC5L8U6uFwyvdHHUh5/doxL+wsmj852Ov18fcsA5Om74iq /viq4ftEPN1BpJsgIKXReyaVM8HFTfdzvgUX2sFbi8IqxPsYPvyR1B5ZN32bVpr9J8 5M2idS8spkwUTRc0+2K7cK0hA+Ho9M2Ks1MKT3zuz1xdZnFcHW5VUrPIjhanKtqtlf 2GfQQKik9shxA== Date: Wed, 26 Aug 2026 13:20:43 -0700 From: Jakub Kicinski To: Maxime Chevallier Cc: Stanislav Fomichev , Maciej Fijalkowski , netdev@vger.kernel.org, davem@davemloft.net, edumazet@google.com, pabeni@redhat.com, anthony.l.nguyen@intel.com, przemyslaw.kitszel@intel.com, andrew+netdev@lunn.ch, saeedm@nvidia.com, tariqt@nvidia.com, mbloch@nvidia.com, mcoquelin.stm32@gmail.com, alexandre.torgue@foss.st.com, aleksander.lobakin@intel.com, horms@kernel.org, magnus.karlsson@intel.com, sdf@fomichev.me, ast@kernel.org, daniel@iogearbox.net, hawk@kernel.org, john.fastabend@gmail.com, guoren@kernel.org, dtatulea@nvidia.com, witu@nvidia.com, martin.lau@kernel.org, yoong.siang.song@intel.com, intel-wired-lan@lists.osuosl.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, bpf@vger.kernel.org, linux-csky@vger.kernel.org, leon@kernel.org Subject: Re: [PATCH net v3 3/3] net: stmmac: document oversized AF_XDP frame handling Message-ID: <20260826132043.39fb435a@kernel.org> In-Reply-To: References: <20260819160535.1472459-1-sdf@fomichev.me> <20260819160535.1472459-4-sdf@fomichev.me> <20260824111443.34bffe04@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-wired-lan-bounces@osuosl.org On Wed, 26 Aug 2026 14:42:25 +0200 Maxime Chevallier wrote: > >> Let's definitely fix it properly if you have better ideas. But since we > >> don't have HW, I'm not super confident doing anything sophisticated > >> myself :-D > > > > Let me take the first 2 patches and leave the stmmac for later. > > I don't think anyone involved care particularly deeply here. > > > > Maxime said he bought a bunch of relevant HW. If we finally wrap > > the AF_XDP tests into driver runtime he should be able to help us... > > Indeed, I haven't started looking into the AF_XDP (and XDP in general) on > stmmac, lots of fixes lately on the subject so I'll get there eventually :) > > I'm currently plumbing the driver selftest on my setup (ethtool -t) and just > runnign this uncovers lots of issues al lover the place, once this > passes I'll get on the kselftests and see what we can do on this. Also if you try running driver ksfts - please keep us posted on what the blockers are. I _think_ we just need to teach ksft to cross compile C binaries?