[ewg] OFED-1.5.1 failure over iWarp

[Steve Wise]

Sean Hefty wrote:
>> No, the idea is this: for non ARPHRD_INFINIBAND devices (e.g. rocee or
>> iwarp) I assume first this rocee, get the rocee gid, and check if this
>> gid appears in any device's gid table. It the mac address belongs to a
>> rocee device then it will be found; if it belongs to an iwarp device
>> then it won't be found. In the later case I build the gid in the pre
>> rocee patches fashion and search again.
>>     
>
> If I look at what's there today, we're trying to find some way to match the
> net_device src_dev_addr with some sort of address associated with an ib_device.
> In the case of actual IB, the net_device src_dev_addr contains the SGID, which
> provides the mapping.
>
> Steve, can you please clarify the iWarp case for me?  For iWarp, doesn't the
> src_dev_addr contain the MAC?  So, the 'GID's reported for an iWarp device is
> really just the MAC.  Is this correct?
>
>   

Yes.

> If this is the case, then couldn't rocee (I hate that name) report its MAC as
> one of its GIDs?  This would ensure that the mapping between net_device and
> ib_device was correct.
>
> - Sean
>