From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 011671EBFFF; Tue, 3 Sep 2024 21:40:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725399616; cv=none; b=pnq/erd7W7DhDO/gIkWF5LaxupWGgICQF+a4+6e3HJWNYSI5+repj2eUQTsCom3BhkOTs7cPZ6p2PAdUm0ilw16wjNp/Nt5O333k8OjalmtwQ0jHLPbjrM6REB7y6yWDRafpGo7zEGhAB23eX2hi/IO/pBhojytizin4t0MAw4w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725399616; c=relaxed/simple; bh=oaZPjF2Hwc2UCWScGNmiQSzXQJql29ev4HaTxsSINYo=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=MNiq848We7MieN0YGETzK0GVCOEGb4lUd8Wy11sykZMUIr57pJNtZswBhZsdN3YmvjslR0Ee3UzcjauOltUGqZPEf6WSBexrTItlq1TVk9sfnfNvVqH3q2CNk4hLRZBiwb+CAaUwmPulWfMfhT6FaMHvhP0FWVMnF4t2VvR18v8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=A4goTdAB; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="A4goTdAB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CD1E2C4CEC4; Tue, 3 Sep 2024 21:40:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1725399615; bh=oaZPjF2Hwc2UCWScGNmiQSzXQJql29ev4HaTxsSINYo=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=A4goTdABFpGLC7mNQ/iVNNtHVfhNY/snxGEsDUa98eLJzqulK3ihS0CVSipU96DK2 3agJPo5pYijI12pg058sMg5p8hCcNXCEauwckXRY7h4zVH9Jd9r/OmjcWMFSD2I4Fb vhOC8d29Lh3Yq20wLvewdmOt6DL0VbQUXOC2W9xf3KIahEOFazunBtOoli4RkVFfqO TbsqMbuOmAvBRN0QJFCfV4KByNO/TvecjblgEuNrC5dms7rLuD7KEwUESkL47WEeSi fiZs89Uax1pO4oUVtn/yjeMvhWyk9fie28eRXWUDHTlk0Xr9w4DhQPgSP9ixXxLwcd a65KUuwzWJNQQ== Date: Tue, 3 Sep 2024 14:40:11 -0700 From: Jakub Kicinski To: Mina Almasry Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-alpha@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, sparclinux@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-arch@vger.kernel.org, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, Donald Hunter , "David S. Miller" , Eric Dumazet , Paolo Abeni , Jonathan Corbet , Richard Henderson , Ivan Kokshaysky , Matt Turner , Thomas Bogendoerfer , "James E.J. Bottomley" , Helge Deller , Andreas Larsson , Jesper Dangaard Brouer , Ilias Apalodimas , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Arnd Bergmann , Steffen Klassert , Herbert Xu , David Ahern , Willem de Bruijn , "=?UTF-8?B?QmrDtnJuIFTDtnBl?= =?UTF-8?B?bA==?=" , Magnus Karlsson , Maciej Fijalkowski , Jonathan Lemon , Shuah Khan , Alexei Starovoitov , Daniel Borkmann , John Fastabend , Sumit Semwal , "Christian =?UTF-8?B?S8O2bmln?=" , Pavel Begunkov , David Wei , Jason Gunthorpe , Yunsheng Lin , Shailend Chand , Harshitha Ramamurthy , Shakeel Butt , Jeroen de Borst , Praveen Kaligineedi , Bagas Sanjaya , Christoph Hellwig , Nikolay Aleksandrov , Taehee Yoo , Willem de Bruijn , Kaiyuan Zhang Subject: Re: [PATCH net-next v24 08/13] net: add support for skbs with unreadable frags Message-ID: <20240903144011.3e7135f9@kernel.org> In-Reply-To: <20240831004313.3713467-9-almasrymina@google.com> References: <20240831004313.3713467-1-almasrymina@google.com> <20240831004313.3713467-9-almasrymina@google.com> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Sat, 31 Aug 2024 00:43:08 +0000 Mina Almasry wrote: > static inline bool tcp_skb_can_collapse_to(const struct sk_buff *skb) > { > - return likely(!TCP_SKB_CB(skb)->eor); > + return likely(!TCP_SKB_CB(skb)->eor && skb_frags_readable(skb)); Do you remember why this is here? Both for Rx and Tx what should matter is whether the "readability" matches, right? We can merge two unreadable messages.