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>
diff --git a/net/rds/ib.h b/net/rds/ib.h
index 62fe7d5..c5eddc2 100644
--- a/net/rds/ib.h
+++ b/net/rds/ib.h
@@ -200,6 +200,10 @@
struct list_head conn_list;
struct ib_device *dev;
struct ib_pd *pd;
+ bool has_fmr;
+ bool has_fr;
+ bool use_fastreg;
+
unsigned int max_mrs;
struct rds_ib_mr_pool *mr_1m_pool;
struct rds_ib_mr_pool *mr_8k_pool;