help porting netmap to new driver

[David]

Hi

Sorry for the late response, I'll be using an ARM processor for a 1G link.

My first issue came when doing what you suggested, and try the "emulated
netmap mode". I need to cross compile the code from my x86, which I think I
did correctly by setting up my arm toolchain and passing the kernel source
when doing the "make".

Now when I run the pkt-gen example I get :

[   57.602575] Unable to handle kernel paging request at virtual address
f143ca04
[   57.609740] pgd = 894c4000
[   57.612420] [f143ca04] *pgd=00000000
[   57.615973] Internal error: Oops: 5 [#1] PREEMPT SMP ARM

Where I'm stuck since a while ago trying to figure it out.

regards

2014-08-27 16:23 GMT-06:00 Luigi Rizzo <rizzo at iet.unipi.it>:

>
>
>
> On Wed, Aug 27, 2014 at 3:18 PM, David <dajose22 at gmail.com> wrote:
>
>> Hi,
>>
>> I'm needing to use netmap on a custom driver, I don't understand the
>> content of the functions I need to implement and that are detailed on
>> "PORTING" file.
>>
>>
> ​sometimes (often, actually) the hw has bottlenecks that make native
> netmap mode almost useless.
> ​One thing you could try is the "emulated netmap mode" which
> is used by default​ if the driver has no native support.
> This is in the code on code.google.com/p/netmap/ ,
> the branch "next" (which is basically the code now in FreeBSD)
> has some fixes for that specific feature
>
> cheers
> luigi
>
>
> can someone give a hand to understand it better?
>>
>> regards
>>
>> --
>> David Díaz Barquero
>>
>> Ingeniería en Computadores
>> Tecnológico de Costa Rica
>> _______________________________________________
>> freebsd-net at freebsd.org mailing list
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>
>
>
>
> --
> -----------------------------------------+-------------------------------
>  Prof. Luigi RIZZO, rizzo at iet.unipi.it  . Dip. di Ing. dell'Informazione
>  http://www.iet.unipi.it/~luigi/        . Universita` di Pisa
>  TEL      +39-050-2211611               . via Diotisalvi 2
>  Mobile   +39-338-6809875               . 56122 PISA (Italy)
> -----------------------------------------+-------------------------------
>



-- 
David Díaz Barquero

Ingeniería en Computadores
Tecnológico de Costa Rica