RDMA/ocrdma: Fix dmac resolution for link local address

rdma_addr_find_dmac_by_grh fails to resolve dmac for link local address.
Use rdma_get_ll_mac to resolve the link local address.

Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@avagotech.com>
Signed-off-by: Mitesh Ahuja <mitesh.ahuja@avagotech.com>
Signed-off-by: Devesh Sharma <devesh.sharma@avagotech.com>
Signed-off-by: Selvin Xavier <selvin.xavier@avagotech.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

2 files changed, 5 insertions, 1 deletions

diff --git a/drivers/infiniband/hw/ocrdma/ocrdma.h b/drivers/infiniband/hw/ocrdma/ocrdma.h
index c9780d919769..ee9e3351a64c 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma.h
+++ b/drivers/infiniband/hw/ocrdma/ocrdma.h
@@ -515,6 +515,8 @@ static inline int ocrdma_resolve_dmac(struct ocrdma_dev *dev,
         memcpy(&in6, ah_attr->grh.dgid.raw, sizeof(in6));
         if (rdma_is_multicast_addr(&in6))
                 rdma_get_mcast_mac(&in6, mac_addr);
+        else if (rdma_link_local_addr(&in6))
+                rdma_get_ll_mac(&in6, mac_addr);
         else
                 memcpy(mac_addr, ah_attr->dmac, ETH_ALEN);
         return 0;
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_ah.c b/drivers/infiniband/hw/ocrdma/ocrdma_ah.c
index 2a5993b75651..f5a5ea836dbd 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_ah.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_ah.c
@@ -127,7 +127,9 @@ struct ib_ah *ocrdma_create_ah(struct ib_pd *ibpd, struct ib_ah_attr *attr)
                 goto av_conf_err;
         }
 
-        if (pd->uctx) {
+        if ((pd->uctx) &&
+            (!rdma_is_multicast_addr((struct in6_addr *)attr->grh.dgid.raw)) &&
+            (!rdma_link_local_addr((struct in6_addr *)attr->grh.dgid.raw))) {
                 status = rdma_addr_find_dmac_by_grh(&sgid, &attr->grh.dgid,
                                         attr->dmac, &attr->vlan_id);
                 if (status) {