IB/ehca: Use named constant for max mtu

Define and use a constant EHCA_MAX_MTU instead hardcoded value.

Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

diff --git a/drivers/infiniband/hw/ehca/ehca_av.c b/drivers/infiniband/hw/ehca/ehca_av.c
index 3bac197..214e2fd 100644 (file)
--- a/drivers/infiniband/hw/ehca/ehca_av.c
+++ b/drivers/infiniband/hw/ehca/ehca_av.c
@@ -118,8 +118,7 @@ struct ib_ah *ehca_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
                }
                memcpy(&av->av.grh.word_1, &gid, sizeof(gid));
        }
-       /* for the time being we use a hard coded PMTU of 2048 Bytes */
-       av->av.pmtu = 4;
+       av->av.pmtu = EHCA_MAX_MTU;
 
        /* dgid comes in grh.word_3 */
        memcpy(&av->av.grh.word_3, &ah_attr->grh.dgid,
@@ -193,7 +192,7 @@ int ehca_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
                memcpy(&new_ehca_av.grh.word_1, &gid, sizeof(gid));
        }
 
-       new_ehca_av.pmtu = 4; /* see also comment in create_ah() */
+       new_ehca_av.pmtu = EHCA_MAX_MTU;
 
        memcpy(&new_ehca_av.grh.word_3, &ah_attr->grh.dgid,
               sizeof(ah_attr->grh.dgid));

diff --git a/drivers/infiniband/hw/ehca/hipz_hw.h b/drivers/infiniband/hw/ehca/hipz_hw.h
index 3fc92b0..fad9136 100644 (file)
--- a/drivers/infiniband/hw/ehca/hipz_hw.h
+++ b/drivers/infiniband/hw/ehca/hipz_hw.h
@@ -45,6 +45,8 @@
 
 #include "ehca_tools.h"
 
+#define EHCA_MAX_MTU 4
+
 /* QP Table Entry Memory Map */
 struct hipz_qptemm {
        u64 qpx_hcr;