RDMA/rxe: Extend rxe user ABI to support flush

This commit extends the rxe user ABI to support the flush
operation defined in IBA A19.4.1. These changes are
backward compatible with the existing rxe user ABI.

The user API request a flush by filling this structure.

Link: https://lore.kernel.org/r/20221206130201.30986-4-lizhijian@fujitsu.com
Reviewed-by: Zhu Yanjun <zyjzyj2000@gmail.com>
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

diff --git a/include/uapi/rdma/rdma_user_rxe.h b/include/uapi/rdma/rdma_user_rxe.h
index d20d1ecf046fd11f05f7cba06df073890a04c3ea..bb092fccb813cce299c7ffad9e576693b1cb1d3e 100644 (file)
--- a/include/uapi/rdma/rdma_user_rxe.h
+++ b/include/uapi/rdma/rdma_user_rxe.h
@@ -82,6 +82,13 @@ struct rxe_send_wr {
                __u32           invalidate_rkey;
        } ex;
        union {
+               struct {
+                       __aligned_u64 remote_addr;
+                       __u32   length;
+                       __u32   rkey;
+                       __u8    type;
+                       __u8    level;
+               } flush;
                struct {
                        __aligned_u64 remote_addr;
                        __u32   rkey;