[ofa-general] rdma/iWarp capability of an ethX interface

[pandit ib]

Thanks for all the suggestions.
I'm tending towards trying the rdma_bind approach.


On Thu, Jul 9, 2009 at 11:30 PM, Liran Liss<liranl at mellanox.co.il> wrote:
> I think that all iWARP devices encode their MAC in index0 of their gid
> table.
> You can look for a matching RDMA device by querying its gids.
>
>
> -----Original Message-----
> From: general-bounces at lists.openfabrics.org
> [mailto:general-bounces at lists.openfabrics.org] On Behalf Of Roland
> Dreier
> Sent: Friday, July 10, 2009 2:15 AM
> To: Steve Wise
> Cc: general at lists.openfabrics.org
> Subject: Re: [ofa-general] rdma/iWarp capability of an ethX interface
>
>
>  > > Is there a way to query an ethX interface and find out if it's  > >
> iWarp/RDMA capable?
>  > >
>  > >
>  >
>  > Unfortunately there isn't an easy way to do this (someone should  >
> implement this as part of the rdma services!).
>  >
>  > One way you can do it is to get all the IP addresses from each  >
> interface via SIOCGIFCONF and friends, and then attempt to rdma_bind()
>> to each address/port 0.  If it succeeds, then that interface supports
>> rdma.  OpenMPI does this...
>
> Another semi-ugly way to do it is to look at the
> /sys/class/net/ethX/device link and then look at the
> /sys/class/infiniband/xxx/device links and see if it is the same.
> any
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