Date: Wed, 8 Oct 1997 14:34:23 -0700 (PDT) From: Jaye Mathisen <mrcpu@cdsnet.net> To: Joerg Wunsch <joerg_wunsch@uriah.heep.sax.de> Cc: hackers@FreeBSD.ORG Subject: Re: A TCP problem, plus solution! (3.0-current) Message-ID: <Pine.NEB.3.95.971008143405.25558g-100000@mail.cdsnet.net> In-Reply-To: <19971008215018.SO62644@uriah.heep.sax.de>
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Must've just missed it, as I cvsup'd yesterday sometime. On Wed, 8 Oct 1997, J Wunsch wrote: > As Jaye Mathisen wrote: > > > I traced it to a sysctl I had in /etc/rc.local that bumped the tcp > > recvspace to 65536. > > > > Resetting it to the default clears the problem up. > > You are not running -current. ;-) > > RCS file: /home/cvs/src/sys/netinet/tcp_output.c,v > ... > revision 1.27 > date: 1997/10/07 21:10:06; author: fenner; state: Exp; lines: +3 -3 > Don't allow the window to be increased beyond what is possible to > represent in the TCP header. The old code did effectively: > win = min(win, MAX_ALLOWED); > win = max(win, what_i_think_i_advertised_last_time); > so if what_i_think_i_advertised_last_time is bigger than can be > represented in the header (e.g. large buffers and no window scaling) > then we stuff a too-big number into a short. This fix reverses the > order of the comparisons. > > PR: kern/4712 > > -- > cheers, J"org > > joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE > Never trust an operating system you don't have sources for. ;-) >
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