Date: Fri, 6 Nov 2009 16:55:05 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/netinet tcp_output.c Message-ID: <200911061655.nA6GtPoh044259@repoman.freebsd.org>
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jhb 2009-11-06 16:55:05 UTC
FreeBSD src repository
Modified files:
sys/netinet tcp_output.c
Log:
SVN rev 198990 on 2009-11-06 16:55:05Z by jhb
Several years ago a feature was added to TCP that casued soreceive() to
send an ACK right away if data was drained from a TCP socket that had
previously advertised a zero-sized window. The current code requires the
receive window to be exactly zero for this to kick in. If window scaling is
enabled and the window is smaller than the scale, then the effective window
that is advertised is zero. However, in that case the zero-sized window
handling is not enabled because the window is not exactly zero. The fix
changes the code to check the raw window value against zero.
Reviewed by: bz
MFC after: 1 week
Revision Changes Path
1.165 +1 -1 src/sys/netinet/tcp_output.c
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