From nobody Tue Apr 30 15:52:26 2024 X-Original-To: bugs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4VTPpf44tBz5JS1m for ; Tue, 30 Apr 2024 15:52:26 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4VTPpf2wm4z4nhv for ; Tue, 30 Apr 2024 15:52:26 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1714492346; a=rsa-sha256; cv=none; b=I454hyii4fyg5RTwh5VE8XTk7K59I5KVsyJ2lK0818CcsBnFCMIIFWeXw5tA90Yox707KZ sYYBEWS2WKuEimm7VnsNkKG6PyqDhGzITVOwoqV+dPgAqQaQ4EErt9BIhP+OPF9RMHBClu +k5LAgFuQ7eUYa42fO6It34LvQE1qSAqe/+MZNE6Cup5w8DAA1JBcoXWU7RO4se/0xZlBF i1caggMvlTlMSSu5MBGBQzmjWahUNoHv1NZusJ2SLHBUaUBeibPJ8SEF7IAssR3L1uiGCJ 1n/mSigg+P7R8GdHy2/fmpskUdICvCWOQ6hHa2ezNobFz5rm+hbHmo4ftCFqvA== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1714492346; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=6tTDYnU5EfCw2QpX+aQbWwktr1TdgVHmjD6+JZcAoms=; b=ABdaZcxfxUnz7qeqzRjC3qzIjwU526wEBmvzn63jy7P+3t3CorHN41d1iKGTNgwbZURd2L EYRRQ2X+bYrLldHP2ATLOh8qlJmWe2MGUi/4Uc7ZVZP9H1HZEiN3jbrRk3y6tedAfFK8+q YLQES4s5JZOlkCx6RNHOIdLbf8jFlH1o8nofLqsDE0C1WfZi2PR24wTXlpolLbjtiZOe5U xp7vscvliyOjDQ03FikNLaA2F5l8lcc2QRIqbhTBC59wUrkwMnLgnwSG/FlRvwz8+Ah3vN hFPcVxGf6MCcF/MbIeqvtUm/iM2YxOu2qlilWaOpTRIx0qvq28TjTOnIsVM0tg== Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4VTPpf2YBXzgxG for ; Tue, 30 Apr 2024 15:52:26 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 43UFqQ9w009998 for ; Tue, 30 Apr 2024 15:52:26 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 43UFqQYm009997 for bugs@FreeBSD.org; Tue, 30 Apr 2024 15:52:26 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 278666] [sctp] Heartbeat jittering is not +- anymore Date: Tue, 30 Apr 2024 15:52:26 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: Unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: albin.hellqvist@ericsson.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D278666 Bug ID: 278666 Summary: [sctp] Heartbeat jittering is not +- anymore Product: Base System Version: Unspecified Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: albin.hellqvist@ericsson.com Hi, When reading the SCTP RFC regarding the SCTP heartbeat timing, it says: "On an idle destination address that is allowed to heartbeat, it is RECOMME= NDED that a HEARTBEAT chunk is sent once per RTO of that destination address plus the protocol parameter 'HB.interval', with jittering of +/- 50% of the RTO value and exponential backoff of the RTO if the previous HEARTBEAT chunk is unanswered." It was implemented like this previously, but it was later changed here: https://cgit.freebsd.org/src/commit/?id=3D70e95f0b6917a8b8cd4a2a5f883f3e975= 3fc86d8 I am wondering if this can be considered a bug? Because previously, the jit= ter could be like [-RTO/2, RTO/2], but now it is [0, RTO/2]. This results in a longer path failover on average for idle paths that are not sending DATA ch= unks and receiving SACK:s. Thank you in advance! --=20 You are receiving this mail because: You are the assignee for the bug.=