RDMA/ocrdma: Add ABI versioning support

Add ABI versioning support between driver and userspace library.

Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

2 files changed, 3 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_abi.h b/drivers/infiniband/hw/ocrdma/ocrdma_abi.h
index e5ea9a9776a4..fbac8eb44036 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_abi.h
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_abi.h
@@ -28,6 +28,7 @@
 #ifndef __OCRDMA_ABI_H__
 #define __OCRDMA_ABI_H__
 
+#define OCRDMA_ABI_VERSION 1
 /* user kernel communication data structures. */
 
 struct ocrdma_alloc_ucontext_resp {
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_main.c b/drivers/infiniband/hw/ocrdma/ocrdma_main.c
index 7d43ba924bfb..56e004940f18 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_main.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_main.c
@@ -39,6 +39,7 @@
 #include "ocrdma_ah.h"
 #include "be_roce.h"
 #include "ocrdma_hw.h"
+#include "ocrdma_abi.h"
 
 MODULE_VERSION(OCRDMA_ROCE_DEV_VERSION);
 MODULE_DESCRIPTION("Emulex RoCE HCA Driver");
@@ -265,6 +266,7 @@ static int ocrdma_register_device(struct ocrdma_dev *dev)
         memcpy(dev->ibdev.node_desc, OCRDMA_NODE_DESC,
                sizeof(OCRDMA_NODE_DESC));
         dev->ibdev.owner = THIS_MODULE;
+        dev->ibdev.uverbs_abi_ver = OCRDMA_ABI_VERSION;
         dev->ibdev.uverbs_cmd_mask =
             OCRDMA_UVERBS(GET_CONTEXT) |
             OCRDMA_UVERBS(QUERY_DEVICE) |