IB/qib: Decode path MTU optimization
Store both the encoded and decoded MTU in the QP structure as a minor
optimization for UC/RC receive routines.
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
diff --git a/drivers/infiniband/hw/qib/qib_rc.c b/drivers/infiniband/hw/qib/qib_rc.c
index 5c1c49b..5d77cb8 100644
--- a/drivers/infiniband/hw/qib/qib_rc.c
+++ b/drivers/infiniband/hw/qib/qib_rc.c
@@ -239,7 +239,7 @@
u32 len;
u32 bth0;
u32 bth2;
- u32 pmtu = ib_mtu_enum_to_int(qp->path_mtu);
+ u32 pmtu = qp->pmtu;
char newreq;
unsigned long flags;
int ret = 0;
@@ -1732,7 +1732,7 @@
* same request.
*/
offset = ((psn - e->psn) & QIB_PSN_MASK) *
- ib_mtu_enum_to_int(qp->path_mtu);
+ qp->pmtu;
len = be32_to_cpu(reth->length);
if (unlikely(offset + len != e->rdma_sge.sge_length))
goto unlock_done;
@@ -1876,7 +1876,7 @@
u32 psn;
u32 pad;
struct ib_wc wc;
- u32 pmtu = ib_mtu_enum_to_int(qp->path_mtu);
+ u32 pmtu = qp->pmtu;
int diff;
struct ib_reth *reth;
unsigned long flags;