Re: select-like implementation for kernel sockets

[Robert Hancock <hancockr@shaw.ca>]

eitanr@audiocodes.com wrote:
> Hi,
>
> I'm using kernel sockets to Tx and Rx UDP packets between my hardware
> device (DSP) to the external network (this is part of a VoIP
> implementation). The motivation for using kernel sockets rather than
> user-space sockets is to avoid the copying of data between kernel and
> user spaces.

I think we are zero-copy in many cases for UDP these days, so this 
doesn't necessarily buy you anything..

> I have no problems on the Tx side (I simply call sock_sendmsg on one
> of the sockets), but for the Rx side I want to listen-in on multiple
> sockets in blocking mode (I don't want to use polling).
>
> Is there a way to listen-in on multiple kernel sockets from one kernel
> thread? In the user space I would have used select(), but I am not
> familiar with a similar solution for the kernel space.
>
> Thanks,
> Eitan.
>
> Eitan Richardson
> AudioCodes Ltd.

--
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@nospamshaw.ca
Home Page: http://www.roberthancock.com/

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