[Oisf-devel] [RFC] af-packet fanout configuration

[Eric Leblond]

Hello everyone,

After looking at PF_RING code, I've decide to do the same for AF_PACKET
support.

Best regards,

Le lundi 08 août 2011 à 17:58 +0200, Eric Leblond a écrit :
> Hello,
> 
> I'm currently working on af-packet support following the  patches
> proposed by David Miller to support multiple threads reading on the same
> interface (similar to PF_RING cluster). Basic af-packet support is now
> working and I will now add support for this feature called fanout.
> 
> I hesitate on the configuration part: PF_RING uses a pfring.threads
> variable that is used to set the number of threads. pf_ring has
> integrated support of the multi-thread feature but this is not the case
> for af-packet. We will then have in fanout mode real suricata managed
> threads. Thus this could be useful to manage and tune them via the
> thread affinity setup.
> 
> I propose the following:
>       * af-packet.fanout: activation of fanout/multithread support
>       * af-packet.threads: set the number of threads
> If set_cpu_affinity is set to yes:
>       * cpu_affinity.receive_cpu_set.threads is used to set the number
>         of threads
>       * if cpu_affinity.receive_cpu_set.threads and af-packet.threads
>         disagree a warning is loggued.
> 
> What do you think ?
> 
> BR,
> --
> Eric Leblond
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> Oisf-devel at openinfosecfoundation.org
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