Well it's supposed to, but it doesn't seem to do it as well as it should :>
How about copying header direct DMA from NIC into cache, then copy from
cache into output NIC after applying whatever filters/changes/etc?
Ingo Flaschberger wrote:
Dear Alex,
>OK, I setup 2 boxes on either end of a RELENG_7 box from about May
>7th just now, to see with 2 boxes blasting across it how it would
>work. *However*, this is with no firewall loaded and, I must enable
>ip fast forwarding. Without that enabled, the box just falls over.
What is "ip fast forwarding" ?
instead of copying the while ip packet into system memory, only the ip
header is copyied and then in a "fast" path determined if it could be
fast forwarded.
if possible, a ned header is created at the other network-cards-buffer
and the ip-data is copied from network-card-buffer to
network-card-buffer directly.
Kind regards,
Ingo Flaschberger
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