Making IB a first class citizen.

[Adrian Chadd]

.. should just check to see what impact it has on performance in the
general case. that may change the cache behaviour of the ARP / routing
table code.



-adrian



On 23 August 2013 09:50, Alfred Perlstein <alfred at freebsd.org> wrote:

> Hello -net.
>
> This email is about making Infiniband a first class citizen of the FreeBSD
> kernel.
>
> Right now we have one #ifdef OFED in the src tree that makes compiling
> modules a real challenge:
>
> In sys/net/if_llatbl.h the "struct llentry" size changes based on if OFED
> is compiled in or not, only by 16 bytes because Infiniband uses 20bytes for
> MAC.  I am wondering if it would be OK to just unifdef this part to make
> inifiband a first class citizen of the kernel. Otherwise maybe we can
> reverse the ifdef so that it's WITHOUT_OFED and by default have it on.
>
> I understand that we can not do this for FreeBSD 9.x due to breaking
> network ABI, however I think we still have time to do so in FreeBSD 10.x.
>
> If there's no objection I'd like to push this change into head in the next
> day or two.  The only difference is +16 bytes to the "struct llentry".
>
> Comments?
>
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