[ofa-general] [PATCH RFC] RDMA: New Memory Extensions.

[Roland Dreier]

 > > Second question -- IB BMME and iWARP talk about a key portion (least
 > > significant byte) of STag/L_Key/R_Key as being under consumer control.
 > > Do we want to expose that as part of this API?  Basically it means we
 > > need to add a way for the consumer to pass in a new L_Key/STag as part
 > > of a lot of calls.
 > 
 > I left it out from this first pass because we don't expose any of that
 > in the existing RDMA API.  Currently the iwarp providers make up their
 > own keys.  EG:  ib_reg_phys_mr() should also allow passing in the key,
 > at least according to iWARP verbs.  But I don't really see the need...

Makes sense.  Maybe RDS would like to control the key to avoid reuse but
they've lived without it so far, and the RDS use case is kind of wacky anyway.