Netmap pipe zero-copy with NIC buffer?

[Paras Jha]

Apologies, by KB I meant kernel bypass, since it is possible to open a
netmap port without bypassing the kernel. I didn't know if this would
affect it or not.

On Sun, Apr 9, 2017 at 3:20 AM, Vincenzo Maffione <v.maffione at gmail.com>
wrote:

> Hi,
>   Yes, when you nm_open("netmap:em3{2", ...), you're opening a netmap pipe
> in the same netmap memory area as the one used by nm_open("netmap:em3",
> ...).
> As a result, you can zero-copy packets from NIC rings to pipe rings.
>
> What do you mean by "KB mode"?
>
> Cheers,
>   Vincenzo
>
> 2017-04-08 19:56 GMT+02:00 Paras Jha <dreadiscool at gmail.com>:
>
>> Hi all,
>>
>> Is it possible to have a netmap pipe share memory with a netmap port
>> opened
>> in KB mode for zero-copy purposes?
>>
>> All the best
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>
>
>
> --
> Vincenzo Maffione
>