tree 690fc1a19547289d37f9cf831f03d49e5e5a17ee
parent db42753adb638b63572583162bb08ea193947309
author santosh.shilimkar@oracle.com <santosh.shilimkar@oracle.com> 1456874452 -0800
committer David S. Miller <davem@davemloft.net> 1456945999 -0500

RDS: IB: add Fastreg MR (FRMR) detection support

Discovere Fast Memmory Registration support using IB device
IB_DEVICE_MEM_MGT_EXTENSIONS. Certain HCA might support just FRMR
or FMR or both FMR and FRWR. In case both mr type are supported,
default FMR is used.

Default MR is still kept as FMR against what everyone else
is following. Default will be changed to FRMR once the
RDS performance with FRMR is comparable with FMR. The
work is in progress for the same.

Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>