IB/uverbs: Support for query SRQ from userspace

Add support to uverbs to handle querying userspace SRQs (shared
receive queues), including adding an ABI for marshalling requests and
responses.  The kernel midlayer already has the underlying
ib_query_srq() function.

Signed-off-by: Dotan Barak <dotanb@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/include/rdma/ib_user_verbs.h b/include/rdma/ib_user_verbs.h
index 58662c34a3de..0edd3a6fe8f5 100644
--- a/include/rdma/ib_user_verbs.h
+++ b/include/rdma/ib_user_verbs.h
@@ -2,6 +2,7 @@
  * Copyright (c) 2005 Topspin Communications.  All rights reserved.
  * Copyright (c) 2005, 2006 Cisco Systems.  All rights reserved.
  * Copyright (c) 2005 PathScale, Inc.  All rights reserved.
+ * Copyright (c) 2006 Mellanox Technologies.  All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -613,6 +614,20 @@ struct ib_uverbs_modify_srq {
         __u64 driver_data[0];
 };
 
+struct ib_uverbs_query_srq {
+        __u64 response;
+        __u32 srq_handle;
+        __u32 reserved;
+        __u64 driver_data[0];
+};
+
+struct ib_uverbs_query_srq_resp {
+        __u32 max_wr;
+        __u32 max_sge;
+        __u32 srq_limit;
+        __u32 reserved;
+};
+
 struct ib_uverbs_destroy_srq {
         __u64 response;
         __u32 srq_handle;