[dpdk-dev] L3fwd mode in testpmd

[Bruce Richardson]

On Tue, Apr 27, 2021 at 11:17:24PM +0000, Honnappa Nagarahalli wrote:
<snip>
> Yes, this is what we have done. It is a new forwarding mode.
> We could remove some forwarding modes from testpmd. For ex: macfwd, macswap seem very similar to iofwd mode.

I'd suggest removing one of those two, but not both. Sometimes one is
testing with a system behind a switch where correct mac addresses need to
be used to ensure proper packet return.

> 
> > 
> > In fact, l3fwd is also quite big and complex:
> > $ wc -l examples/l3fwd/*.[h,c] |grep total
> >   6969 total
> > 
> > Plus it will introduce extra dependencies (fib, lpm, hash, might-be acl?) I am
> > not sure it is a good idea to pull all these complexities into test-pmd.
> I do not suggest pulling all these in. In our case, I see that the ask is only on LPM. I am open to hearing what others see as the requirement.
> 
I think fib is the planned long-term replacement for lpm, and implements
the same algorithm, so I think first versions should use it.