[PATCH v6 2/4] RDMA/core: Add device method for registering dma-buf base memory region

[Jianxin Xiong]

Dma-buf based memory region requires one extra parameter and is processed
quite differently. Adding a separate method allows clean separation from
regular memory regions.

Signed-off-by: Jianxin Xiong <jianxin.xiong at intel.com>
Reviewed-by: Sean Hefty <sean.hefty at intel.com>
Acked-by: Michael J. Ruhl <michael.j.ruhl at intel.com>
Acked-by: Christian Koenig <christian.koenig at amd.com>
Acked-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/infiniband/core/device.c | 1 +
 include/rdma/ib_verbs.h          | 6 +++++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index feaec8d..d6cd0ac 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -2653,6 +2653,7 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops)
 	SET_DEVICE_OP(dev_ops, read_counters);
 	SET_DEVICE_OP(dev_ops, reg_dm_mr);
 	SET_DEVICE_OP(dev_ops, reg_user_mr);
+	SET_DEVICE_OP(dev_ops, reg_user_mr_dmabuf);
 	SET_DEVICE_OP(dev_ops, req_ncomp_notif);
 	SET_DEVICE_OP(dev_ops, req_notify_cq);
 	SET_DEVICE_OP(dev_ops, rereg_user_mr);
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 9bf6c31..5f0f8be 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -2,7 +2,7 @@
 /*
  * Copyright (c) 2004 Mellanox Technologies Ltd.  All rights reserved.
  * Copyright (c) 2004 Infinicon Corporation.  All rights reserved.
- * Copyright (c) 2004 Intel Corporation.  All rights reserved.
+ * Copyright (c) 2004, 2020 Intel Corporation.  All rights reserved.
  * Copyright (c) 2004 Topspin Corporation.  All rights reserved.
  * Copyright (c) 2004 Voltaire Corporation.  All rights reserved.
  * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
@@ -2429,6 +2429,10 @@ struct ib_device_ops {
 	struct ib_mr *(*reg_user_mr)(struct ib_pd *pd, u64 start, u64 length,
 				     u64 virt_addr, int mr_access_flags,
 				     struct ib_udata *udata);
+	struct ib_mr *(*reg_user_mr_dmabuf)(struct ib_pd *pd, u64 offset,
+				     u64 length, u64 virt_addr, int fd,
+				     int mr_access_flags,
+				     struct ib_udata *udata);
 	int (*rereg_user_mr)(struct ib_mr *mr, int flags, u64 start, u64 length,
 			     u64 virt_addr, int mr_access_flags,
 			     struct ib_pd *pd, struct ib_udata *udata);
-- 
1.8.3.1