From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 07EB6137B for ; Fri, 6 Oct 2023 01:18:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Q8JLQX2C" Received: from mail-pj1-x1031.google.com (mail-pj1-x1031.google.com [IPv6:2607:f8b0:4864:20::1031]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 55463D6 for ; Thu, 5 Oct 2023 18:18:47 -0700 (PDT) Received: by mail-pj1-x1031.google.com with SMTP id 98e67ed59e1d1-277317a0528so348395a91.0 for ; Thu, 05 Oct 2023 18:18:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1696555127; x=1697159927; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=6b+BhGnqS8QCrCX36eQi9bS0yunU0kJFrU3oS+QnLBE=; b=Q8JLQX2CKSFerx54nZBsRrQdf3fizZV4eLe4wx0aFpWE8TxzshncHdp8Dnhuc4n4Q5 AplXn2F25eaau7pnrHERnhF3GyevSWr4R2cRwiuOmF/e3zOSqAjr6oiQQnh7EeLISXV9 iVgR4GKE46NEvaiyWXCYPd8Obyd0oil9HI4wsUK32ccN4exuHEJCQ64MOaeLbh8TyQxs MnV8ItbrDzAccPgVxdxszqqc5UMBbedF66esG+ukB6IPYLQkxAYyl331Ouxhf3fUfli2 KlBlmdXBT6LasfhrDkqk8BfYu4crb+mTuPIGOxrItuZeDxoodr2G1aInuomPf7GMxd7Y YlWQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696555127; x=1697159927; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=6b+BhGnqS8QCrCX36eQi9bS0yunU0kJFrU3oS+QnLBE=; b=c6Gh0OqDAF98S94UNiwmCofjZz3ng8Ekdst775fI1vM0O9ei7mhuPjAmXbeBM86OZ0 exOQumr6gGR8Kvg3qWcsaKerG4QAs58hHzKmX43YaDHYIqWNbw4ppL2XKfTPK6yYRZtw YE4HIos6rkn2IfWx8dhaNsnBI1RzvVTDykfzGAoRiw1PH8Wbl7JByAC9jNOZIx6NLHP9 cFgQyPmwFlYmp7p79nsodWH8Kl+xguBP8BFmcKVbmoFb8Z6pdUsYzrvK2yaYBqOTAICh hT8u5ZP/FCTwL8qxoCjOeDrQldmJaalfKiPbIiSBYE2e39Wf6ITyUmjrJiyy67ptM3iq mL5A== X-Gm-Message-State: AOJu0YzjyKOhK+UphG7PpjCSYoD7VXzA41GNmhXoeyu544pHaGEbgsbG LSO5N6UYNKW2Tq90thzcuV4= X-Google-Smtp-Source: AGHT+IHseGkH/AO6kyHWtAjAc9APzKBQhZGG/MKsjzvogrwj+g1HCJxB70F23H7HIi7e4EpZxGx2IQ== X-Received: by 2002:a17:902:e74b:b0:1c7:1eed:10f2 with SMTP id p11-20020a170902e74b00b001c71eed10f2mr7281306plf.2.1696555126658; Thu, 05 Oct 2023 18:18:46 -0700 (PDT) Received: from dmoe.c.googlers.com.com (238.76.127.34.bc.googleusercontent.com. [34.127.76.238]) by smtp.gmail.com with ESMTPSA id n3-20020a170902e54300b001c20c608373sm2413776plf.296.2023.10.05.18.18.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Oct 2023 18:18:46 -0700 (PDT) From: David Morley To: David Miller , Eric Dumazet , Jakub Kicinski Cc: netdev@vger.kernel.org, David Morley Subject: [PATCH net-next v3 0/2] tcp: save flowlabel and use for receiver repathing Date: Fri, 6 Oct 2023 01:18:39 +0000 Message-ID: <20231006011841.3558307-1-morleyd.kernel@gmail.com> X-Mailer: git-send-email 2.42.0.609.gbb76f46606-goog Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net From: David Morley This patch series stores the last received ipv6 flowlabel. This last received flowlabel is then used to help decide whether a packet is likely an RTO retransmit or the result of a TLP. This new information is used to better inform the flowlabel change decision for data receivers. v2: addressed kernel bot feedback about dccp_delack_timer() v3: addressed build error introduced by commit bbf80d713fe7 ("tcp: derive delack_max from rto_min") David Morley (2): tcp: record last received ipv6 flowlabel tcp: change data receiver flowlabel after one dup include/net/inet_connection_sock.h | 5 ++++- include/net/tcp.h | 2 ++ net/dccp/timer.c | 4 ++-- net/ipv4/tcp_input.c | 29 ++++++++++++++++++++++++++--- net/ipv4/tcp_timer.c | 2 +- 5 files changed, 35 insertions(+), 7 deletions(-) -- 2.42.0.582.g8ccd20d70d-goog