Re: [Xen-devel] Why are you removing netif_carrier_on?

[Ian Pratt <Ian.Pratt@xxxxxxxxxxxx>]

> 
> I'm looking the difference between the ethernet driver (3c59x.c) for linux and
> the one for Xen. It seems that there is only two differences. 
> 
> Firstly, Xen don't use the copybreak scheme. If I'm right, the copybreak 
> scheme
> implies the use of smaller buffer according to the incoming packet size. Why
> can't you use this scheme with Xen? 

Currently, we use page-flipping to deliver all packets to guests
rather than ever copying. This is probably not entirely smart for
small packets.... It'll all change under the next gen IO scheme
any how.

> Secondly, you remove all netif_carrier_on() call. Why? 

Hmm. I suspect you're just diff'ing against a different driver
version.

Ian


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