From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793970929; b=POlx+yzyLE9rfVjWeTMdq3PEdeI4rCkyYh+azT5j/V15nCjTFOosF6sNSJ7ljYyeKhKK ccb2RyELEi8FRrALmP3sItUjIigfjK7Q2jPTIOslQoFmGcJxDlP4gNLuUtjk65euI0aE2 nllW0hiiVNGdLoCj6pFIAif+GBdkDW/+u7yJ10rWpBj6rM6jx9eum8zUmj3B8klWpTHqv HB8GAMoDEuEEkCBPgdVjnhr1X/w71I3mYVP5h5P2HoF8cRXWX+uSPPR+dX7PgzLiPD8vB 6ZW9FAq75rayw4D91vjP7SToqJNaBxQGKkETnS5v76V9WiOXOqIwFw8tkyJDiRbqO9w== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793970929; h=Received:DKIM-Signature:Received:Content-Type:MIME-Version: Content-Transfer-Encoding:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; bh=km8r+cnmKuYMdZesKgiekckeUOq5ezdJQc7tNLQIf/k=; b=CBJaIk0RDwy3S/XTwkRW8I8tU870cdgM4SVrpG4CDkzlmWT0Lcb2tV3jLFd8RG1zU/qR fksFa3LQ+64slv3k7Dx0loq+1Wqp97u/s60hn+ujvPIKSH/KVa8OgoDEPtoWIZmmbOyG8 yiBzOmRfDNsSlAy9l8lxg1LVi5MICCCYAgri75/7lwGa+rYFLlh6OI6QQmWHhbo4FqrCw 6VoRsH8abE3JiYTpLRD2Zs3yG7HGIbDm6YXG+C/ioKfpeOTHaVrrGXvbnEFmo/YSssj31 GglA3+cWbVbxnafruRC+jFyiyfZmj1Jq3WUlDRQimP1uQbwrUfSf2o7eGA6hD2z7S6Q== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b="eiITEbj/"; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B671C606A326 for ; Fri, 6 Nov 2026 13:15:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=eiITEbj/ Received: by smtp.kernel.org (Postfix) with ESMTPSA id 470B91F008A1; Fri, 6 Nov 2026 13:15:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793970928; bh=km8r+cnmKuYMdZesKgiekckeUOq5ezdJQc7tNLQIf/k=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=eiITEbj/pelEWOFMjBBfJH32kcPrZ3AHgkjq5pbGBYGacgfzbq61bR5p3ffkE1mKG fh0cF9PFYOjtQ4nj93+WDvn3zd+XYR2sTEI49KGh09macLRm30e30CPwH7AGmSlJjf 2m+pthN9F+U2muHZZjKKWGHPP8daTxdaiheudszF4OzF5N8QJs3D8elodYoEGWpGd0 5lhl79URBJ9zwZQwIUgg6b/uRTFy0jC/upHXw3wWxZRjQFDEFoh2HDqJB2BXdM+Im5 GKC64sBqMlx/Uq+Ey2GSu87lCgbbpCaHxdb5k9dbE0BMY9FMXgVMmpXAMBQPOu1cff mVNVdSXWzd39Q== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 2106D3930E6B; Fri, 6 Nov 2026 12:00:21 +0000 (UTC) Content-Type: text/plain; charset="utf-8" X-Mailing-List: netdev@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH v1 net-next 0/2] tcp: Let non-PSP and PSP share mtu and advmss. From: patchwork-bot+netdevbpf@kernel.org Message-Id: <179396641976.575356.9858593759192464397.git-patchwork-notify@kernel.org> Date: Fri, 06 Nov 2026 12:00:19 +0000 References: <20261103000712.658501-1-kuniyu@google.com> In-Reply-To: <20261103000712.658501-1-kuniyu@google.com> To: Kuniyuki Iwashima Cc: edumazet@kernel.org, ncardwell@google.com, daniel.zahka@gmail.com, willemdebruijn.kernel@gmail.com, davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com, dsahern@kernel.org, idosch@nvidia.com, horms@kernel.org, thaisonphan@google.com, kuni1840@gmail.com, netdev@vger.kernel.org Hello: This series was applied to netdev/net-next.git (main) by Paolo Abeni : On Tue, 3 Nov 2026 00:06:01 +0000 you wrote: > Since psp_sk_overhead() is added to icsk->icsk_ext_hdr_len, > which is subtracted after clamping in __tcp_mtu_to_mss(), > it is impossible to configure a route that both PSP and > non-PSP achieve 4K MSS for TCP_ZEROCOPY_RECEIVE. > > mtu 4220 advmss 4108 > -> non-PSP gets 4K MSS, but PSP gets 4056, breaking > TCP_ZEROCOPY_RECEIVE > > [...] Here is the summary with links: - [v1,net-next,1/2] psp: Check pas->tx.spi in psp_sk_overhead(). https://git.kernel.org/netdev/net-next/c/7020a2766440 - [v1,net-next,2/2] tcp: Subtract psp_sk_overhead() in __tcp_mtu_to_mss() and tcp_mss_to_mtu(). https://git.kernel.org/netdev/net-next/c/3c6e29760c13 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html