Date: Tue, 7 Apr 2009 14:42:40 +0000 (UTC) From: "Bjoern A. Zeeb" <bz@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r190800 - head/sys/netinet Message-ID: <200904071442.n37EgehW011567@svn.freebsd.org>
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Author: bz Date: Tue Apr 7 14:42:40 2009 New Revision: 190800 URL: http://svn.freebsd.org/changeset/base/190800 Log: With the right comparison we get a proper wscale value and thus more adequate TCP performance with IPv6. Changes for IPv4, r166403 and r172795, both ignored the IPv6 counterpart and left it in the state of art of year 2000. The same logic in syncache already shares code between v4 and v6 so things do not need to be adapted there. Reported by: Steinar Haug (sthaug nethelp.no) Tested by: Steinar Haug (sthaug nethelp.no) MFC after: 3 days Modified: head/sys/netinet/tcp_usrreq.c Modified: head/sys/netinet/tcp_usrreq.c ============================================================================== --- head/sys/netinet/tcp_usrreq.c Tue Apr 7 13:51:41 2009 (r190799) +++ head/sys/netinet/tcp_usrreq.c Tue Apr 7 14:42:40 2009 (r190800) @@ -1173,7 +1173,7 @@ tcp6_connect(struct tcpcb *tp, struct so /* Compute window scaling to request. */ while (tp->request_r_scale < TCP_MAX_WINSHIFT && - (TCP_MAXWIN << tp->request_r_scale) < so->so_rcv.sb_hiwat) + (TCP_MAXWIN << tp->request_r_scale) < sb_max) tp->request_r_scale++; soisconnecting(so);
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