Date: Thu, 28 Sep 2006 18:02:46 +0000 (UTC) From: Andre Oppermann <andre@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/netinet tcp_output.c Message-ID: <200609281802.k8SI2k9X027575@repoman.freebsd.org>
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andre 2006-09-28 18:02:46 UTC
FreeBSD src repository
Modified files:
sys/netinet tcp_output.c
Log:
When tcp_output() receives an error upon sending a packet it reverts parts
of its internal state to ignore the failed send and try again a bit later.
If the error is EPERM the packet got blocked by the local firewall and the
revert may cause the session to get stuck and retry indefinitely. This way
we treat it like a packet loss and let the retransmit timer and timeouts
do their work over time.
The correct behavior is to drop a connection that gets an EPERM error.
However this _may_ introduce some POLA problems and a two commit approach
was chosen.
Discussed with: glebius
PR: kern/25986
PR: kern/102653
Revision Changes Path
1.120 +15 -2 src/sys/netinet/tcp_output.c
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