Re: select-like implementation for kernel sockets

["kalash nainwal" <kalash.nainwal@gmail.com>]

On 5/6/07, Robert Hancock <hancockr@shaw.ca> wrote:
> 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.
> >

implementing (sock->)sk_data_ready() might serve your purpose?

> > 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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