[openib-general] Some Missing Features from mthca/user MAD ac cess

[Hal Rosenstock]

On Mon, 2005-01-10 at 16:54, Sean Hefty wrote:
> This restriction is to avoid performing data copies on received MADs. 
> In the kernel, clients are handed the data buffer(s) associated with a 
> receive.
> 
> Since user-mode requires a data copy anyway, I'm wondering if it makes 
> more sense for all user-mode clients to register in the kernel to snoop 
> MADs, rather than to receive them.  The user-mode interface could then 
> be modified to support more flexible filtering options.

Would this allow richer filtering options or also allow multiple
receivers for the same MAD ?

Any idea on what the interface would look like ? Would it support
attribute ID ? What else ?

Are there any compelling reasons to do this ? 

-- Hal