Re: [Fwd: Re: possible bug x86 2.4.2 SMP in IP receive stack]

[Bob Felderman <feldy@xxxxxxxx>]

On Fri, 9 Mar 2001 kuznet@xxxxxxxxxxxxx wrote:

> Hello!
> 
> > He's using fragmented UDP packets, so the lazy receive defrag stuff
> > (ie. 2 copies turn into 1) work wonders.
> 
> _No_ copy on softirq. It is more important.
> 
> It is the reason why all the tricks with backlog are not essential.


Can you explain this a bit more? Are you saying that a softirq
will reduce the number of copies? Should the driver be calling
softirq to deliver the packets using netif_rx?