diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 449609b..fd7a695 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -48,6 +48,7 @@
 #include <linux/rwsem.h>
 #include <linux/scatterlist.h>
 #include <linux/workqueue.h>
+#include <linux/socket.h>
 #include <uapi/linux/if_ether.h>
 
 #include <linux/atomic.h>
@@ -1765,6 +1766,28 @@
 	void (*add)   (struct ib_device *);
 	void (*remove)(struct ib_device *, void *client_data);
 
+	/* Returns the net_dev belonging to this ib_client and matching the
+	 * given parameters.
+	 * @dev:	 An RDMA device that the net_dev use for communication.
+	 * @port:	 A physical port number on the RDMA device.
+	 * @pkey:	 P_Key that the net_dev uses if applicable.
+	 * @gid:	 A GID that the net_dev uses to communicate.
+	 * @addr:	 An IP address the net_dev is configured with.
+	 * @client_data: The device's client data set by ib_set_client_data().
+	 *
+	 * An ib_client that implements a net_dev on top of RDMA devices
+	 * (such as IP over IB) should implement this callback, allowing the
+	 * rdma_cm module to find the right net_dev for a given request.
+	 *
+	 * The caller is responsible for calling dev_put on the returned
+	 * netdev. */
+	struct net_device *(*get_net_dev_by_params)(
+			struct ib_device *dev,
+			u8 port,
+			u16 pkey,
+			const union ib_gid *gid,
+			const struct sockaddr *addr,
+			void *client_data);
 	struct list_head list;
 };
 
@@ -3014,4 +3037,8 @@
 int ib_check_mr_status(struct ib_mr *mr, u32 check_mask,
 		       struct ib_mr_status *mr_status);
 
+struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, u8 port,
+					    u16 pkey, const union ib_gid *gid,
+					    const struct sockaddr *addr);
+
 #endif /* IB_VERBS_H */