Date: Sun, 22 Aug 2010 01:39:09 +0000 (UTC) From: Pyun YongHyeon <yongari@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/dev/bge if_bge.c if_bgereg.h Message-ID: <201008220139.o7M1dLl6015063@repoman.freebsd.org>
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yongari 2010-08-22 01:39:09 UTC
FreeBSD src repository
Modified files:
sys/dev/bge if_bge.c if_bgereg.h
Log:
SVN rev 211596 on 2010-08-22 01:39:09Z by yongari
It seems all Broadcom controllers have a bug that can generate UDP
datagrams with checksum value 0 when TX UDP checksum offloading is
enabled. Generating UDP checksum value 0 is RFC 768 violation.
Even though the probability of generating such UDP datagrams is
low, I don't want to see FreeBSD boxes to inject such datagrams
into network so disable UDP checksum offloading by default. Users
still override this behavior by setting a sysctl variable or loader
tunable, dev.bge.%d.forced_udpcsum.
I have no idea why this issue was not reported so far given that
bge(4) is one of the most commonly used controller on high-end
server class systems. Thanks to andre@ who passed the PR to me.
PR: kern/104826
Revision Changes Path
1.296 +41 -7 src/sys/dev/bge/if_bge.c
1.101 +2 -0 src/sys/dev/bge/if_bgereg.h
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