kern/149497: [fxp] 8.1-release, problem with fxp driver [regression]

[yongari at FreeBSD.org]

Synopsis: [fxp] 8.1-release, problem with fxp driver [regression]

State-Changed-From-To: open->closed
State-Changed-By: yongari
State-Changed-When: Mon Aug 16 17:24:31 UTC 2010
State-Changed-Why: 
Not a fxp(4) bug.
This issue was caused by a bug in ipfilter's checksum offloading
handling. Consumer grade fxp(4) controllers support simple RX
checksum offloading capability and fxp(4) started to use that
feature. However ipfilter's checksum offloading logic has a bug
such that it incorrectly computes checksum of received frame and
dropped the frame.
See the kern/106438 for more details and possible fix.
You can disable RX checksum offloading of fxp(4) as temporary
workaround.
#ifconfig fxp0 -rxcsum


Responsible-Changed-From-To: freebsd-net->yongari
Responsible-Changed-By: yongari
Responsible-Changed-When: Mon Aug 16 17:24:31 UTC 2010
Responsible-Changed-Why: 
Track.

http://www.freebsd.org/cgi/query-pr.cgi?pr=149497