[ewg] [PATCH 1/9] ib_core: Add API to query port link type

[Eli Cohen]

This allows to get the type of a port to be either Ethernet or IB which is
required by following patches for implementing RDMA over Ethernet - RDMAoE.

Signed-off-by: Eli Cohen <eli at mellanox.co.il>
---
 drivers/infiniband/core/verbs.c |    7 +++++++
 include/rdma/ib_verbs.h         |   11 +++++++++++
 2 files changed, 18 insertions(+), 0 deletions(-)

diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index a7da9be..18631b1 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -94,6 +94,13 @@ rdma_node_get_transport(enum rdma_node_type node_type)
 }
 EXPORT_SYMBOL(rdma_node_get_transport);
 
+enum ib_port_link_type ib_get_port_link_type(struct ib_device *device, u8 port_num)
+{
+	return device->get_port_link_type ?
+		device->get_port_link_type(device, port_num) : PORT_LINK_IB;
+}
+EXPORT_SYMBOL(ib_get_port_link_type);
+
 /* Protection domains */
 
 struct ib_pd *ib_alloc_pd(struct ib_device *device)
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index c179318..8f98c8f 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -72,6 +72,11 @@ enum rdma_transport_type {
 	RDMA_TRANSPORT_IWARP
 };
 
+enum ib_port_link_type {
+	PORT_LINK_IB,
+	PORT_LINK_ETH
+};
+
 enum rdma_transport_type
 rdma_node_get_transport(enum rdma_node_type node_type) __attribute_const__;
 
@@ -298,6 +303,7 @@ struct ib_port_attr {
 	u8			active_width;
 	u8			active_speed;
 	u8                      phys_state;
+	enum ib_port_link_type  link_type;
 };
 
 enum ib_device_modify_flags {
@@ -1003,6 +1009,8 @@ struct ib_device {
 	int		           (*query_port)(struct ib_device *device,
 						 u8 port_num,
 						 struct ib_port_attr *port_attr);
+	enum ib_port_link_type     (*get_port_link_type)(struct ib_device *device,
+							 u8 port_num);
 	int		           (*query_gid)(struct ib_device *device,
 						u8 port_num, int index,
 						union ib_gid *gid);
@@ -1213,6 +1221,9 @@ int ib_query_device(struct ib_device *device,
 int ib_query_port(struct ib_device *device,
 		  u8 port_num, struct ib_port_attr *port_attr);
 
+enum ib_port_link_type ib_get_port_link_type(struct ib_device *device,
+					     u8 port_num);
+
 int ib_query_gid(struct ib_device *device,
 		 u8 port_num, int index, union ib_gid *gid);
 
-- 
1.6.3.1