RDMA/uverbs: Export XRC SRQs to user space

We require additional information to create XRC SRQs than we can
exchange using the existing create SRQ ABI.  Provide an enhanced create
ABI for extended SRQ types.

Based on patches by Jack Morgenstein <jackm@dev.mellanox.co.il>
and Roland Dreier <roland@purestorage.com>

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 17 insertions, 2 deletions

diff --git a/include/rdma/ib_user_verbs.h b/include/rdma/ib_user_verbs.h
index b5cb63f41f0f..100abbbd6e6e 100644
--- a/include/rdma/ib_user_verbs.h
+++ b/include/rdma/ib_user_verbs.h
@@ -83,7 +83,8 @@ enum {
         IB_USER_VERBS_CMD_DESTROY_SRQ,
         IB_USER_VERBS_CMD_POST_SRQ_RECV,
         IB_USER_VERBS_CMD_OPEN_XRCD,
-        IB_USER_VERBS_CMD_CLOSE_XRCD
+        IB_USER_VERBS_CMD_CLOSE_XRCD,
+        IB_USER_VERBS_CMD_CREATE_XSRQ
 };
 
 /*
@@ -665,11 +666,25 @@ struct ib_uverbs_create_srq {
         __u64 driver_data[0];
 };
 
+struct ib_uverbs_create_xsrq {
+        __u64 response;
+        __u64 user_handle;
+        __u32 srq_type;
+        __u32 pd_handle;
+        __u32 max_wr;
+        __u32 max_sge;
+        __u32 srq_limit;
+        __u32 reserved;
+        __u32 xrcd_handle;
+        __u32 cq_handle;
+        __u64 driver_data[0];
+};
+
 struct ib_uverbs_create_srq_resp {
         __u32 srq_handle;
         __u32 max_wr;
         __u32 max_sge;
-        __u32 reserved;
+        __u32 srqn;
 };
 
 struct ib_uverbs_modify_srq {