IB/rdmavt: Add driver notification for new AH

Drivers may need to do some work once an address handle has been
created. Add a driver function for this purpose.

Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Harish Chegondi <harish.chegondi@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

1 files changed, 25 insertions, 16 deletions

diff --git a/include/rdma/rdma_vt.h b/include/rdma/rdma_vt.h
index a3d6a5bd0c02..ef66d2b0ec37 100644
--- a/include/rdma/rdma_vt.h
+++ b/include/rdma/rdma_vt.h
@@ -467,9 +467,21 @@ struct rvt_driver_params {
 	int nports;
 };
 
-/*
- * Functions that drivers are required to support
- */
+/* Protection domain */
+struct rvt_pd {
+	struct ib_pd ibpd;
+	int user;               /* non-zero if created from user space */
+};
+
+/* Address handle */
+struct rvt_ah {
+	struct ib_ah ibah;
+	struct ib_ah_attr attr;
+	atomic_t refcount;
+	u8 vl;
+	u8 log_pmtu;
+};
+
 struct rvt_dev_info;
 struct rvt_driver_provided {
 	/*
@@ -478,23 +490,20 @@ struct rvt_driver_provided {
 	 * instead drivers are responsible for setting the correct callback for
 	 * this.
 	 */
+
+	/* -------------------*/
+	/* Required functions */
+	/* -------------------*/
 	int (*port_callback)(struct ib_device *, u8, struct kobject *);
 	const char * (*get_card_name)(struct rvt_dev_info *rdi);
 	struct pci_dev * (*get_pci_dev)(struct rvt_dev_info *rdi);
-	int (*check_ah)(struct ib_device *, struct ib_ah_attr *);
-};
 
-/* Protection domain */
-struct rvt_pd {
-	struct ib_pd ibpd;
-	int user;               /* non-zero if created from user space */
-};
-
-/* Address handle */
-struct rvt_ah {
-	struct ib_ah ibah;
-	struct ib_ah_attr attr;
-	atomic_t refcount;
+	/*--------------------*/
+	/* Optional functions */
+	/*--------------------*/
+	int (*check_ah)(struct ib_device *, struct ib_ah_attr *);
+	void (*notify_new_ah)(struct ib_device *, struct ib_ah_attr *,
+			      struct rvt_ah *);
 };
 
 struct rvt_dev_info {