diff --git a/drivers/infiniband/hw/usnic/usnic_ib_main.c b/drivers/infiniband/hw/usnic/usnic_ib_main.c
index 0a89a95..dde0b23 100644
--- a/drivers/infiniband/hw/usnic/usnic_ib_main.c
+++ b/drivers/infiniband/hw/usnic/usnic_ib_main.c
@@ -325,6 +325,7 @@
 	if (err)
 		return err;
 
+	immutable->core_cap_flags = RDMA_CORE_PORT_USNIC;
 	immutable->pkey_tbl_len = attr.pkey_tbl_len;
 	immutable->gid_tbl_len = attr.gid_tbl_len;
 
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index f311c25..0739902 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -490,6 +490,7 @@
 #define RDMA_CORE_CAP_PROT_IWARP        0x00400000
 #define RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP 0x00800000
 #define RDMA_CORE_CAP_PROT_RAW_PACKET   0x01000000
+#define RDMA_CORE_CAP_PROT_USNIC        0x02000000
 
 #define RDMA_CORE_PORT_IBA_IB          (RDMA_CORE_CAP_PROT_IB  \
 					| RDMA_CORE_CAP_IB_MAD \
@@ -515,6 +516,8 @@
 
 #define RDMA_CORE_PORT_RAW_PACKET	(RDMA_CORE_CAP_PROT_RAW_PACKET)
 
+#define RDMA_CORE_PORT_USNIC		(RDMA_CORE_CAP_PROT_USNIC)
+
 struct ib_port_attr {
 	u64			subnet_prefix;
 	enum ib_port_state	state;
@@ -2350,6 +2353,11 @@
 	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_RAW_PACKET;
 }
 
+static inline bool rdma_protocol_usnic(const struct ib_device *device, u8 port_num)
+{
+	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_USNIC;
+}
+
 /**
  * rdma_cap_ib_mad - Check if the port of a device supports Infiniband
  * Management Datagrams.