diff --git a/include/rdma/ib_addr.h b/include/rdma/ib_addr.h
index fde33ac..17e4a8b 100644
--- a/include/rdma/ib_addr.h
+++ b/include/rdma/ib_addr.h
@@ -112,7 +112,7 @@
 
 int rdma_addr_find_smac_by_sgid(union ib_gid *sgid, u8 *smac, u16 *vlan_id);
 int rdma_addr_find_dmac_by_grh(const union ib_gid *sgid, const union ib_gid *dgid,
-			       u8 *smac, u16 *vlan_id);
+			       u8 *smac, u16 *vlan_id, int if_index);
 
 static inline u16 ib_addr_get_pkey(struct rdma_dev_addr *dev_addr)
 {