[PATCH 1/5] RDMA/rxe: Change user/kernel API to allow indexing AH

[Bob Pearson <rpearsonhpe@gmail.com>]

Make changes to rdma_user_rxe.h to allow indexing AH objects, passing
the index in UD send WRs to the driver and returning the index to the rxe
provider. This change will allow removing handling of the AV in the user
space provider. This change is backwards compatible with the current API
so new or old providers and drivers can work together.

Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
---
 include/uapi/rdma/rdma_user_rxe.h | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/include/uapi/rdma/rdma_user_rxe.h b/include/uapi/rdma/rdma_user_rxe.h
index e283c2220aba..e544832ed073 100644
--- a/include/uapi/rdma/rdma_user_rxe.h
+++ b/include/uapi/rdma/rdma_user_rxe.h
@@ -98,6 +98,8 @@ struct rxe_send_wr {
 			__u32	remote_qpn;
 			__u32	remote_qkey;
 			__u16	pkey_index;
+			__u16	reserved;
+			__u32	ah_num;
 		} ud;
 		struct {
 			__aligned_u64	addr;
@@ -148,7 +150,12 @@ struct rxe_dma_info {
 
 struct rxe_send_wqe {
 	struct rxe_send_wr	wr;
-	struct rxe_av		av;
+	union {
+		struct rxe_av av;
+		struct {
+			__u32		reserved[0];
+		} ex;
+	};
 	__u32			status;
 	__u32			state;
 	__aligned_u64		iova;
@@ -168,6 +175,11 @@ struct rxe_recv_wqe {
 	struct rxe_dma_info	dma;
 };
 
+struct rxe_create_ah_resp {
+	__u32 ah_num;
+	__u32 reserved;
+};
+
 struct rxe_create_cq_resp {
 	struct mminfo mi;
 };
-- 
2.30.2