From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f74.google.com (mail-pj1-f74.google.com [209.85.216.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AD8E0282F19 for ; Mon, 2 Mar 2026 22:48:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772491720; cv=none; b=IKZJTWFF8v38xxjx/hUpZzawvrC4hFO+MMnFdbfxZpaFS9shRthyxcKqOwnwoVHx3BraPTUv4Xbo6hnNrSzDPF1LtL3x0ULltTo4y0AO7YbHJGj00RYtpNKANdWZjcDQiwWkADxnxsSNAEA7yzQlzz7P8+8hNQfs0HWUpZYEsM8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772491720; c=relaxed/simple; bh=+wy8la/VGkrE9qXcHEYD0ZGp2zojpxnxhsuNxBSUvuY=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=V0ZAdBLe+dLbIgwi5qb4SFx8lO0rqixuj+AGmzlsGDezIR+8mbEd0tlQPbfVpj9PSFO57u6nTb5guHrSGHNRQXI045tgqTCpSrAs7f89iwe7xjPUNcHaqCuqaFcaVk4psGYWtM/eyERP/quJWxQF4jw3+IAG/VX/K+IrqL3GNBI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--kuniyu.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=uwaxuNip; arc=none smtp.client-ip=209.85.216.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--kuniyu.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="uwaxuNip" Received: by mail-pj1-f74.google.com with SMTP id 98e67ed59e1d1-358f058973fso4567729a91.1 for ; Mon, 02 Mar 2026 14:48:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1772491719; x=1773096519; darn=vger.kernel.org; h=content-transfer-encoding:cc:to:from:subject:message-id:references :mime-version:in-reply-to:date:from:to:cc:subject:date:message-id :reply-to; bh=Te+OrBD2GijL0ppsDjl9gA82K/lUAJNc/dgoG8R+hfg=; b=uwaxuNip92aKUxTCec9tRosIiSrB8YJXGvHKzvbHaRxwOcomGztgGH/uowKRykxPGQ Ap5BG8sw3D0C2Wpj8Uu94UT7UMY9/nfhYOqpiopMWTzwFC1+cIfed+kga5K6szAL4Dqn VGAvApNy0UshpscgCdDEQ0Bre02fS+YEW4qMKDDBqZSlmyJIK8cJskZUhctf9uIYKpRQ auW6VgoIwy73HB6wKc5BmgNQjUWGwi/5gWqyh5KB9/xbM7JvIo8/GivR77bcTJeLmfH+ aBdtoD9h6LqlGSTAoYQ8Th0WmRsdzRRxO0jt6CEFmlfmO1ELCc3fMMdNHJiVaz8cwXSM 7nqQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1772491719; x=1773096519; h=content-transfer-encoding:cc:to:from:subject:message-id:references :mime-version:in-reply-to:date:x-gm-message-state:from:to:cc:subject :date:message-id:reply-to; bh=Te+OrBD2GijL0ppsDjl9gA82K/lUAJNc/dgoG8R+hfg=; b=FrxxtlJX3NEUlYUdo52Cb25JO8BAOFO//qBlp9BmxgUFjvpIGasC4lcv2QPaTLV0XG t/0w7o7tGUnCoc9VN+pvm2JOihXC6if35tIU1BswG/9f8I6Gf6n35/5r8yu7yUS6YW9Q yQnND5igHgOAxsGog3Mej2goE0BWApNOhOgLoX/u8IsWJtYUWgLMzd11aCGN1K505n4i 3K0Z4oEDVnqhtuGhplN9GVoswrekTKUjy0rkEux/8YaGVGSOGxwYvVnNG3y+QlV0lprT BZFdaRzqk3eUxJVDO1PTUduj0KlbwshIjh+kyoz4wD70qboJuuh66DC387ZGjFtqRgNu c5YQ== X-Gm-Message-State: AOJu0Yy2VQQQdD731OmQR292L3JJihSFoMED7XWAiG45j0rbhek+3WpA xfgjjV5HDvAB14SAwfgGZLophaufEz4woXtsE8p0DWqeCFRvPA6ZMm2k8UJwvxYCkrXN02q8yhU zyyWvjg== X-Received: from pjbgm24.prod.google.com ([2002:a17:90b:1018:b0:359:979d:cee5]) (user=kuniyu job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:2d43:b0:340:66f9:381 with SMTP id 98e67ed59e1d1-35965c4e541mr12062321a91.10.1772491718852; Mon, 02 Mar 2026 14:48:38 -0800 (PST) Date: Mon, 2 Mar 2026 22:47:56 +0000 In-Reply-To: Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: X-Mailer: git-send-email 2.53.0.473.g4a7958ca14-goog Message-ID: <20260302224837.1286217-1-kuniyu@google.com> Subject: Re: [PATCH] doc/ip-sysctl: tcp_timestamps is per src-dst not connection From: Kuniyuki Iwashima To: joerg@jo-so.de Cc: netdev@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable From: "J=C3=B6rg Sommer" Date: Mon, 2 Mar 2026 22:13:10 +0100 > Since 28ee1b746f493b7c62347d714f58fbf4f70df4f0 (secure_seq: downgrade to > per-host timestamp offsets) the random offset for TCP timestamps is the s= ame > for all connections between a same source and destination addresses; the > port does not matter. We are going to revert the commit and then this doc change will be unnecessary. https://lore.kernel.org/netdev/20260302205527.1982836-1-edumazet@google.com= / >=20 > Signed-off-by: J=C3=B6rg Sommer > --- > Documentation/networking/ip-sysctl.rst | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) >=20 > diff --git a/Documentation/networking/ip-sysctl.rst b/Documentation/netwo= rking/ip-sysctl.rst > index 6921d8594b84..0d74f8d8a79e 100644 > --- a/Documentation/networking/ip-sysctl.rst > +++ b/Documentation/networking/ip-sysctl.rst > @@ -1071,7 +1071,7 @@ tcp_timestamps - INTEGER > =20 > - 0: Disabled. > - 1: Enable timestamps as defined in RFC1323 and use random offset for > - each connection rather than only using the current time. > + each pair (src-addr, dst-addr) rather than only using the current tim= e. > - 2: Like 1, but without random offsets. > =20 > Default: 1 > --=20 > 2.51.0