[openib-general] Re: What is the correct method of determining the number of ports

[Hal Rosenstock]

On Mon, 2005-06-06 at 16:46, Michael S. Tsirkin wrote:
> Quoting r. Hal Rosenstock <halr at voltaire.com>:
> > Subject: Re: What is the correct method of determining?the?number of ports
> > 
> > On Mon, 2005-06-06 at 01:07, Shirley Ma wrote: 
> > > I was thinking to use ibv_get_devices() to get the list of device
> > > names, then use umad_get_ca() to get ca info. (it actually gets the
> > > info from directory /sys/class/infiniband.) Which might not what you
> > > want.
> > 
> > umad was done long before uverbs was available and using
> > /sys/class/infiniband was the only way to obtain the needed information
> > in userspace. If the community thinks uverbs should be used to obtain
> > this information, this can be converted over. Patches accepted :-)
> > 
> > -- Hal
> 
> Off the top of my head, the right approach seems to be to use
> /dev/infiniband/umad%d for umad.
> Right?

It does that...

The info it gets from /sys/class/infiniband/ pertains to a variety of
driver (verbs) queries.

-- Hal