Date: Tue, 12 Feb 2002 13:10:02 -0800 (PST) From: AMAKAWA Shuhei <sa264@cam.ac.uk> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/34801: TCP window size bug (afflicting IP Filter Message-ID: <200202122110.g1CLA2W12956@freefall.freebsd.org>
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The following reply was made to PR kern/34801; it has been noted by GNATS. From: AMAKAWA Shuhei <sa264@cam.ac.uk> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: freebsd-gnats-submit@FreeBSD.org Subject: Re: kern/34801: TCP window size bug (afflicting IP Filter Date: Tue, 12 Feb 2002 21:01:37 +0000 At Tue, 12 Feb 2002 13:36:51 -0500 (EST), Andrew Gallatin wrote: > I'd greatly prefer we keep the default tcp_recvspace a multiple of > MCLBYTES, or better yet, a multiple of PAGE_SIZE. > > So if its decided that reducing tcp_recvspace is the expediant fix > (rather than fixing ipfiler, which would be much better), set it to > 56k or 32k or something. Don't set it to 64k-1. Sounds fine to me. As a matter of fact, I use 32768. The question is what the folks who decided to make this change have to say. I don't know why the particular value of 64k was chosen. I'm interested to hear the reason behind Matt Dillon's reservation about going beyond 32k, noted in the CVS log (if he had such reservation at all). http://www.FreeBSD.org/cgi/cvsweb.cgi/src/sys/netinet/tcp_usrreq.c revision 1.64 -- Shuhei To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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