Date: Thu, 12 Feb 2009 17:31:39 +0000 (UTC) From: Randall Stewart <rrs@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/netinet sctp_output.c Message-ID: <200902121731.n1CHVqK6085650@repoman.freebsd.org>
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rrs 2009-02-12 17:31:39 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_7)
sys/netinet sctp_output.c
Log:
SVN rev 188523 on 2009-02-12 17:31:39Z by rrs
MFC of 184336:
Two inter-related bugs.
- If we send EXACTLY the size left in the send buffer
and then send again, we end up with exactly 0 bytes and
don't hit the pre-block code to wait for more space.
- If we fall into the loop with our max_len == 0 (the bug
above) we then call in to copy out the data, setup the length
of the waiting to transmit data to 0 and call the mbuf copy routine
which 0 indicates copy all the data to the mbuf chain.. which it
does. This then leaves a "stuck" message on the stream queue with
its size exactly 0 bytes but all the data there and thus nothing
left in the uio structure. We then reach a stuck forever state
never being able to send data.
Revision Changes Path
1.58.2.13 +8 -2 src/sys/netinet/sctp_output.c
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