packet filtering via Chelsio NICs

mike tancsa mike at
Mon Aug 17 15:09:51 UTC 2020

Actually, found this very cool reference which is exactly what I am
looking for


On 8/17/2020 9:13 AM, mike tancsa wrote:
> Has anyone used the packet filtering features of the T520 and T540 cards
> on FreeBSD ? Rather than use ipfw or pf, I am hoping to offload some of
> the packet filtering to the features on the card. Does it save CPU
> processing power in the end ? Is there a sweet spot to using it, or am I
> better off using ipfw ? I am looking at dropping traffic in the 2-5Gb/s
> range filtering out bogons and other bad packets.
> Would appreciate any examples / caveats / tip on how to use it as the
> docs are kind of sparse. Using it on RELENG_12
>     ---Mike
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