IB/Verbs: Implement raw management helpers

Add raw helpers:
        rdma_protocol_ib
        rdma_protocol_iboe
        rdma_protocol_iwarp
        rdma_ib_or_iboe (transition, clean up later)
To help us detect which technology the port supported.

Signed-off-by: Michael Wang <yun.wang@profitbricks.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Tested-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Sean Hefty <sean.hefty@intel.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Tested-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

include/rdma/ib_verbs.h

@@ -1752,6 +1752,28 @@ int ib_query_port(struct ib_device *device,
 enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device,
 					       u8 port_num);
 
+static inline bool rdma_protocol_ib(struct ib_device *device, u8 port_num)
+{
+	return device->query_protocol(device, port_num) == RDMA_PROTOCOL_IB;
+}
+
+static inline bool rdma_protocol_iboe(struct ib_device *device, u8 port_num)
+{
+	return device->query_protocol(device, port_num) == RDMA_PROTOCOL_IBOE;
+}
+
+static inline bool rdma_protocol_iwarp(struct ib_device *device, u8 port_num)
+{
+	return device->query_protocol(device, port_num) == RDMA_PROTOCOL_IWARP;
+}
+
+static inline bool rdma_ib_or_iboe(struct ib_device *device, u8 port_num)
+{
+	enum rdma_protocol_type pt = device->query_protocol(device, port_num);
+
+	return (pt == RDMA_PROTOCOL_IB || pt == RDMA_PROTOCOL_IBOE);
+}
+
 int ib_query_gid(struct ib_device *device,
 		 u8 port_num, int index, union ib_gid *gid);