IB/core: Add gid_type to gid attribute

In order to support multiple GID types, we need to store the gid_type
with each GID. This is also aligned with the RoCE v2 annex "RoCEv2 PORT
GID table entries shall have a "GID type" attribute that denotes the L3
Address type". The currently supported GID is IB_GID_TYPE_IB which is
also RoCE v1 GID type.

This implies that gid_type should be added to roce_gid_table meta-data.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

3 files changed, 15 insertions, 1 deletions

diff --git a/include/rdma/ib_cache.h b/include/rdma/ib_cache.h
index 269a27cf0a46..e30f19bd4a41 100644
--- a/include/rdma/ib_cache.h
+++ b/include/rdma/ib_cache.h
@@ -60,6 +60,7 @@ int ib_get_cached_gid(struct ib_device    *device,
  *   a specified GID value occurs.
  * @device: The device to query.
  * @gid: The GID value to search for.
+ * @gid_type: The GID type to search for.
  * @ndev: In RoCE, the net device of the device. NULL means ignore.
  * @port_num: The port number of the device where the GID value was found.
  * @index: The index into the cached GID table where the GID was found.  This
@@ -70,6 +71,7 @@ int ib_get_cached_gid(struct ib_device    *device,
  */
 int ib_find_cached_gid(struct ib_device *device,
 		       const union ib_gid *gid,
+		       enum ib_gid_type gid_type,
 		       struct net_device *ndev,
 		       u8               *port_num,
 		       u16              *index);
@@ -79,6 +81,7 @@ int ib_find_cached_gid(struct ib_device *device,
  * GID value occurs
  * @device: The device to query.
  * @gid: The GID value to search for.
+ * @gid_type: The GID type to search for.
  * @port_num: The port number of the device where the GID value sould be
  *   searched.
  * @ndev: In RoCE, the net device of the device. Null means ignore.
@@ -90,6 +93,7 @@ int ib_find_cached_gid(struct ib_device *device,
  */
 int ib_find_cached_gid_by_port(struct ib_device *device,
 			       const union ib_gid *gid,
+			       enum ib_gid_type gid_type,
 			       u8               port_num,
 			       struct net_device *ndev,
 			       u16              *index);
diff --git a/include/rdma/ib_sa.h b/include/rdma/ib_sa.h
index 301969552d0a..0a40ed241156 100644
--- a/include/rdma/ib_sa.h
+++ b/include/rdma/ib_sa.h
@@ -160,6 +160,7 @@ struct ib_sa_path_rec {
 	int	     ifindex;
 	/* ignored in IB */
 	struct net  *net;
+	enum ib_gid_type gid_type;
 };
 
 static inline struct net_device *ib_get_ndev_from_path(struct ib_sa_path_rec *rec)
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index b14feaba39f1..00d2006ad816 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -69,7 +69,15 @@ union ib_gid {
 
 extern union ib_gid zgid;
 
+enum ib_gid_type {
+	/* If link layer is Ethernet, this is RoCE V1 */
+	IB_GID_TYPE_IB        = 0,
+	IB_GID_TYPE_ROCE      = 0,
+	IB_GID_TYPE_SIZE
+};
+
 struct ib_gid_attr {
+	enum ib_gid_type	gid_type;
 	struct net_device	*ndev;
 };
 
@@ -2245,7 +2253,8 @@ int ib_modify_port(struct ib_device *device,
 		   struct ib_port_modify *port_modify);
 
 int ib_find_gid(struct ib_device *device, union ib_gid *gid,
-		struct net_device *ndev, u8 *port_num, u16 *index);
+		enum ib_gid_type gid_type, struct net_device *ndev,
+		u8 *port_num, u16 *index);
 
 int ib_find_pkey(struct ib_device *device,
 		 u8 port_num, u16 pkey, u16 *index);