diff mbox series

[RFC,1/3] common/mlx5: glue device and PD importation

Message ID 20220102070638.2211160-2-michaelba@nvidia.com (mailing list archive)
State RFC, archived
Delegated to: Raslan Darawsheh
Headers
Series net/mlx5: add external RxQ support |

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Michael Baum Jan. 2, 2022, 7:06 a.m. UTC 
  From: Michael Baum <michaelba@nvidia.com>

Add support for rdma-core API to import device.
The API gets ibv_context file descriptor and returns an ibv_context
pointer that is associated with the given file descriptor.
Add also support for rdma-core API to import PD.
The API gets ibv_context and PD handle and returns a protection domain
(PD) that is associated with the given handle in the given context.

Signed-off-by: Michael Baum <michaelba@nvidia.com>
---
 drivers/common/mlx5/linux/mlx5_glue.c | 21 +++++++++++++++++++++
 drivers/common/mlx5/linux/mlx5_glue.h |  4 ++++
 2 files changed, 25 insertions(+)
diff mbox series

Patch

diff --git a/drivers/common/mlx5/linux/mlx5_glue.c b/drivers/common/mlx5/linux/mlx5_glue.c
index bc6622053f..2f70e7f320 100644
--- a/drivers/common/mlx5/linux/mlx5_glue.c
+++ b/drivers/common/mlx5/linux/mlx5_glue.c
@@ -34,6 +34,18 @@  mlx5_glue_dealloc_pd(struct ibv_pd *pd)
 	return ibv_dealloc_pd(pd);
 }
 
+static struct ibv_pd *
+mlx5_glue_import_pd(struct ibv_context *context, uint32_t pd_handle)
+{
+	return ibv_import_pd(context, pd_handle);
+}
+
+static void
+mlx5_glue_unimport_pd(struct ibv_pd *pd)
+{
+	ibv_unimport_pd(pd);
+}
+
 static struct ibv_device **
 mlx5_glue_get_device_list(int *num_devices)
 {
@@ -52,6 +64,12 @@  mlx5_glue_open_device(struct ibv_device *device)
 	return ibv_open_device(device);
 }
 
+static struct ibv_context *
+mlx5_glue_import_device(int cmd_fd)
+{
+	return ibv_import_device(cmd_fd);
+}
+
 static int
 mlx5_glue_close_device(struct ibv_context *context)
 {
@@ -1402,9 +1420,12 @@  const struct mlx5_glue *mlx5_glue = &(const struct mlx5_glue) {
 	.fork_init = mlx5_glue_fork_init,
 	.alloc_pd = mlx5_glue_alloc_pd,
 	.dealloc_pd = mlx5_glue_dealloc_pd,
+	.import_pd = mlx5_glue_import_pd,
+	.unimport_pd = mlx5_glue_unimport_pd,
 	.get_device_list = mlx5_glue_get_device_list,
 	.free_device_list = mlx5_glue_free_device_list,
 	.open_device = mlx5_glue_open_device,
+	.import_device = mlx5_glue_import_device,
 	.close_device = mlx5_glue_close_device,
 	.query_device = mlx5_glue_query_device,
 	.query_device_ex = mlx5_glue_query_device_ex,
diff --git a/drivers/common/mlx5/linux/mlx5_glue.h b/drivers/common/mlx5/linux/mlx5_glue.h
index 4e6d31f263..5ed38e4fd9 100644
--- a/drivers/common/mlx5/linux/mlx5_glue.h
+++ b/drivers/common/mlx5/linux/mlx5_glue.h
@@ -151,9 +151,13 @@  struct mlx5_glue {
 	int (*fork_init)(void);
 	struct ibv_pd *(*alloc_pd)(struct ibv_context *context);
 	int (*dealloc_pd)(struct ibv_pd *pd);
+	struct ibv_pd *(*import_pd)(struct ibv_context *context,
+				    uint32_t pd_handle);
+	void (*unimport_pd)(struct ibv_pd *pd);
 	struct ibv_device **(*get_device_list)(int *num_devices);
 	void (*free_device_list)(struct ibv_device **list);
 	struct ibv_context *(*open_device)(struct ibv_device *device);
+	struct ibv_context *(*import_device)(int cmd_fd);
 	int (*close_device)(struct ibv_context *context);
 	int (*query_device)(struct ibv_context *context,
 			    struct ibv_device_attr *device_attr);