From owner-svn-src-all@freebsd.org Sat May 4 10:38:55 2019 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id C89EC1589A25; Sat, 4 May 2019 10:38:55 +0000 (UTC) (envelope-from tuexen@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) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 6ABC583C1A; Sat, 4 May 2019 10:38:55 +0000 (UTC) (envelope-from tuexen@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 3F73771F9; Sat, 4 May 2019 10:38:55 +0000 (UTC) (envelope-from tuexen@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x44ActCG013869; Sat, 4 May 2019 10:38:55 GMT (envelope-from tuexen@FreeBSD.org) Received: (from tuexen@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x44AcsW9013867; Sat, 4 May 2019 10:38:54 GMT (envelope-from tuexen@FreeBSD.org) Message-Id: <201905041038.x44AcsW9013867@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: tuexen set sender to tuexen@FreeBSD.org using -f From: Michael Tuexen Date: Sat, 4 May 2019 10:38:54 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r347096 - stable/12/sys/netinet X-SVN-Group: stable-12 X-SVN-Commit-Author: tuexen X-SVN-Commit-Paths: stable/12/sys/netinet X-SVN-Commit-Revision: 347096 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 6ABC583C1A X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.95 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; NEURAL_HAM_SHORT(-0.95)[-0.953,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 04 May 2019 10:38:56 -0000 Author: tuexen Date: Sat May 4 10:38:54 2019 New Revision: 347096 URL: https://svnweb.freebsd.org/changeset/base/347096 Log: MFC r344368: Reduce the TCP initial retransmission timeout from 3 seconds to 1 second as allowed by RFC 6298. Reviewed by: kbowling@, Richard Scheffenegger Sponsored by: Netflix, Inc. Differential Revision: https://reviews.freebsd.org/D18941 Modified: stable/12/sys/netinet/tcp_syncache.c stable/12/sys/netinet/tcp_timer.h Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/netinet/tcp_syncache.c ============================================================================== --- stable/12/sys/netinet/tcp_syncache.c Sat May 4 10:36:16 2019 (r347095) +++ stable/12/sys/netinet/tcp_syncache.c Sat May 4 10:38:54 2019 (r347096) @@ -159,7 +159,7 @@ static int syncookie_cmp(struct in_conninfo *inc, str * tcp_backoff[1] + * tcp_backoff[2] + * tcp_backoff[3]) + 3 * tcp_rexmit_slop, - * 3000 ms * (1 + 2 + 4 + 8) + 3 * 200 ms = 45600 ms, + * 1000 ms * (1 + 2 + 4 + 8) + 3 * 200 ms = 15600 ms, * the odds are that the user has given up attempting to connect by then. */ #define SYNCACHE_MAXREXMTS 3 Modified: stable/12/sys/netinet/tcp_timer.h ============================================================================== --- stable/12/sys/netinet/tcp_timer.h Sat May 4 10:36:16 2019 (r347095) +++ stable/12/sys/netinet/tcp_timer.h Sat May 4 10:38:54 2019 (r347096) @@ -77,7 +77,7 @@ #define TCPTV_MSL ( 30*hz) /* max seg lifetime (hah!) */ #define TCPTV_SRTTBASE 0 /* base roundtrip time; if 0, no idea yet */ -#define TCPTV_RTOBASE ( 3*hz) /* assumed RTO if no info */ +#define TCPTV_RTOBASE ( 1*hz) /* assumed RTO if no info */ #define TCPTV_PERSMIN ( 5*hz) /* minimum persist interval */ #define TCPTV_PERSMAX ( 60*hz) /* maximum persist interval */