IB/uverbs: Implement memory windows support in uverbs

The existing user/kernel uverbs API has IB_USER_VERBS_CMD_ALLOC/DEALLOC_MW.
Implement these calls, along with destroying user memory windows during
process cleanup.

Signed-off-by: Haggai Eran <haggaie@mellanox.com>
Signed-off-by: Shani Michaeli <shanim@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/include/uapi/rdma/ib_user_verbs.h b/include/uapi/rdma/ib_user_verbs.h
index 81aba3a73aa3..805711ea2005 100644
--- a/include/uapi/rdma/ib_user_verbs.h
+++ b/include/uapi/rdma/ib_user_verbs.h
@@ -261,6 +261,22 @@ struct ib_uverbs_dereg_mr {
         __u32 mr_handle;
 };
 
+struct ib_uverbs_alloc_mw {
+        __u64 response;
+        __u32 pd_handle;
+        __u8  mw_type;
+        __u8  reserved[3];
+};
+
+struct ib_uverbs_alloc_mw_resp {
+        __u32 mw_handle;
+        __u32 rkey;
+};
+
+struct ib_uverbs_dealloc_mw {
+        __u32 mw_handle;
+};
+
 struct ib_uverbs_create_comp_channel {
         __u64 response;
 };