Hi All,
Has anyone used hwassist in there Ethernet driver?
My Ethernet chip supports offloading CRC/FCS generation/checking for
transmits/receives and I'd like to take advantage of that to save CPU
processing time and improve transfer speed.
It seems like I need to do something in the driver _start() but I'm not
sure.
I've found some documentation on the various CSUM_ values at
http://people.freebsd.org/~jlemon/csum.txt
m_pkthdr.csum_flag appears that it needs to be set when receiving and
ifp->if_hwassist needs to be set on output but where is the right place and
to what values?
I think I can set at least CSUM_IP | CSUM_TCP | CSUM_UDP on transmits and
CSUM_IP_CHECKED | CSUM_IP_VALID for receives.
Any helpful pointers would be appreciated.
...Laurie:{)
--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
