IB/core: Tidy ib_resolve_eth_dmac

No reason to call rdma_ah_retrieve_grh, tidy whitespace, and add a
function comment block.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>

diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 26ee1de..45c095e 100644 (file)
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -1455,13 +1455,19 @@ bool ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
 }
 EXPORT_SYMBOL(ib_modify_qp_is_ok);
 
+/**
+ * ib_resolve_eth_dmac - Resolve destination mac address
+ * @device:            Device to consider
+ * @ah_attr:           address handle attribute which describes the
+ *                     source and destination parameters
+ * ib_resolve_eth_dmac() resolves destination mac address and L3 hop limit It
+ * returns 0 on success or appropriate error code. It initializes the
+ * necessary ah_attr fields when call is successful.
+ */
 static int ib_resolve_eth_dmac(struct ib_device *device,
                               struct rdma_ah_attr *ah_attr)
 {
-       int           ret = 0;
-       struct ib_global_route *grh;
-
-       grh = rdma_ah_retrieve_grh(ah_attr);
+       int ret = 0;
 
        if (rdma_is_multicast_addr((struct in6_addr *)ah_attr->grh.dgid.raw)) {
                if (ipv6_addr_v4mapped((struct in6_addr *)ah_attr->grh.dgid.raw)) {