RDMA: Add EFA related definitions

Add EFA driver ID to the IOCTL interface uapi. This patch also adds
unspecified node/transport type that will be used by EFA (usnic is left
unchanged as it's already part of our ABI).

Signed-off-by: Gal Pressman <galpress@amazon.com>
Reviewed-by: Shiraz Saleem <shiraz.saleem@intel.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/core/sysfs.c

@@ -1201,6 +1201,7 @@ static ssize_t node_type_show(struct device *device,
 	case RDMA_NODE_RNIC:	  return sprintf(buf, "%d: RNIC\n", dev->node_type);
 	case RDMA_NODE_USNIC:	  return sprintf(buf, "%d: usNIC\n", dev->node_type);
 	case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type);
+	case RDMA_NODE_UNSPECIFIED: return sprintf(buf, "%d: unspecified\n", dev->node_type);
 	case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
 	case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
 	default:		  return sprintf(buf, "%d: <unknown>\n", dev->node_type);

drivers/infiniband/core/verbs.c

@@ -218,6 +218,8 @@ rdma_node_get_transport(enum rdma_node_type node_type)
 		return RDMA_TRANSPORT_USNIC_UDP;
 	if (node_type == RDMA_NODE_RNIC)
 		return RDMA_TRANSPORT_IWARP;
+	if (node_type == RDMA_NODE_UNSPECIFIED)
+		return RDMA_TRANSPORT_UNSPECIFIED;
 
 	return RDMA_TRANSPORT_IB;
 }

include/rdma/ib_verbs.h

@@ -140,6 +140,7 @@ enum rdma_node_type {
 	RDMA_NODE_RNIC,
 	RDMA_NODE_USNIC,
 	RDMA_NODE_USNIC_UDP,
+	RDMA_NODE_UNSPECIFIED,
 };
 
 enum {
@@ -151,7 +152,8 @@ enum rdma_transport_type {
 	RDMA_TRANSPORT_IB,
 	RDMA_TRANSPORT_IWARP,
 	RDMA_TRANSPORT_USNIC,
-	RDMA_TRANSPORT_USNIC_UDP
+	RDMA_TRANSPORT_USNIC_UDP,
+	RDMA_TRANSPORT_UNSPECIFIED,
 };
 
 enum rdma_protocol_type {

include/uapi/rdma/rdma_user_ioctl_cmds.h

@@ -102,6 +102,7 @@ enum rdma_driver_id {
 	RDMA_DRIVER_RXE,
 	RDMA_DRIVER_HFI1,
 	RDMA_DRIVER_QIB,
+	RDMA_DRIVER_EFA,
 };
 
 #endif