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IB/uverbs: Add alloc/free dm uverbs ioctl support

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This change adds uverbs support for allocation/freeing
of device memory commands.

A new uverbs object is defined of type idr to represent
and track the new resource type allocation per context.

The API requires provider driver to implement 2 new ib_device
callbacks - one for allocation and one for deallocation which
return and accept (respectively) the ib_dm object which represents
the allocated memory on the device.

The support is added via the ioctl command infrastructure
only.

Signed-off-by: Ariel Levkovich <lariel@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Ariel Levkovich
2018-04-05 18:53:24 +03:00
committed by Jason Gunthorpe
parent 1d8eeb9f6a
commit bee76d7ab5
6 changed files with 146 additions and 3 deletions
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15
include/uapi/rdma/ib_user_ioctl_cmds.h
View File

@@ -54,6 +54,7 @@ enum uverbs_default_objects {
UVERBS_OBJECT_RWQ_IND_TBL,
UVERBS_OBJECT_WQ,
UVERBS_OBJECT_FLOW_ACTION,
UVERBS_OBJECT_DM,
};
enum {
@@ -100,4 +101,18 @@ enum uverbs_methods_actions_flow_action_ops {
UVERBS_METHOD_FLOW_ACTION_ESP_MODIFY,
};
enum uverbs_attrs_alloc_dm_cmd_attr_ids {
UVERBS_ATTR_ALLOC_DM_HANDLE,
UVERBS_ATTR_ALLOC_DM_LENGTH,
UVERBS_ATTR_ALLOC_DM_ALIGNMENT,
};
enum uverbs_attrs_free_dm_cmd_attr_ids {
UVERBS_ATTR_FREE_DM_HANDLE,
};
enum uverbs_methods_dm {
UVERBS_METHOD_DM_ALLOC,
UVERBS_METHOD_DM_FREE,
};
#endif