[openib-general] RE: [PATCH][iWARP] Another CM Verbs Approach

[Tom Tucker]

> -----Original Message-----
> From: Roland Dreier [mailto:rolandd at cisco.com] 
> Sent: Friday, August 26, 2005 12:53 PM
> To: Tom Tucker
> Cc: Sean Hefty; Roland Dreier; openib-general at openib.org
> Subject: Re: [PATCH][iWARP] Another CM Verbs Approach
> 
>     Tom> I think there is general concensus that having CM verbs in
>     Tom> the ib_device structure is disgusting. This patch moves these
>     Tom> verbs to the ib_cm.h file and adds a device capabilities flag
>     Tom> that indicates whether or not the device has CM verbs.
> 
>     Tom> I know this is not exactly what everyone is looking for, but
>     Tom> I hope it is workable given the practical realities we face
>     Tom> relative to host stack integration and the need to support
>     Tom> devices that establish connections internally.
> 
> How about creating an iwarp_cm.h file instead of using ib_cm.h?  That
> way it's clear that these new methods are for iWARP devices.

good suggestion.

> 
> I'd like to understand that last bit above about devices that
> establish connections internally.  Does that mean that there are RNICs
> that cannot support the iWARP verbs' notion of migrating a connection?
> 

Yes, that's what it means and the reason is that Linux does not (yet) 
provide a means to do so. 

>  - R.
>