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IB/uverbs: Add support to advise_mr

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Add new ioctl method for the MR object - ADVISE_MR.

This command can be used by users to give an advice or directions to the
kernel about an address range that belongs to memory regions.

A new ib_device callback, advise_mr(), is introduced here to suupport the
new command. This command takes the following arguments:

- pd:		The protection domain to which all memory regions belong
- advice: 	The type of the advice
	  	* IB_UVERBS_ADVISE_MR_ADVICE_PREFETCH - Pre-fetch a range of
		an on-demand paging MR
	  	* IB_UVERBS_ADVISE_MR_ADVICE_PREFETCH_WRITE - Pre-fetch a range
		of an on-demand paging MR with write intention
- flags:	The properties of the advice
		* IB_UVERBS_ADVISE_MR_FLAG_FLUSH - Operation must end before
		return to the caller
- sg_list:	The list of memory ranges
- num_sge:	The number of memory ranges in the list
- attrs:	More attributes to be parsed by the provider

Signed-off-by: Moni Shoua <monis@mellanox.com>
Reviewed-by: Guy Levi <guyle@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Moni Shoua
2018-12-11 13:37:52 +02:00
committed by Jason Gunthorpe
parent cbfdd442c4
commit ad8a449675
4 changed files with 76 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
include/uapi/rdma/ib_user_ioctl_cmds.h
View File

@@ -147,12 +147,20 @@ enum uverbs_attrs_reg_dm_mr_cmd_attr_ids {
enum uverbs_methods_mr {
UVERBS_METHOD_DM_MR_REG,
UVERBS_METHOD_MR_DESTROY,
UVERBS_METHOD_ADVISE_MR,
};
enum uverbs_attrs_mr_destroy_ids {
UVERBS_ATTR_DESTROY_MR_HANDLE,
};
enum uverbs_attrs_advise_mr_cmd_attr_ids {
UVERBS_ATTR_ADVISE_MR_PD_HANDLE,
UVERBS_ATTR_ADVISE_MR_ADVICE,
UVERBS_ATTR_ADVISE_MR_FLAGS,
UVERBS_ATTR_ADVISE_MR_SGE_LIST,
};
enum uverbs_attrs_create_counters_cmd_attr_ids {
UVERBS_ATTR_CREATE_COUNTERS_HANDLE,
};

9
include/uapi/rdma/ib_user_ioctl_verbs.h
View File

@@ -157,4 +157,13 @@ enum ib_uverbs_read_counters_flags {
IB_UVERBS_READ_COUNTERS_PREFER_CACHED = 1 << 0,
};
enum ib_uverbs_advise_mr_advice {
IB_UVERBS_ADVISE_MR_ADVICE_PREFETCH,
IB_UVERBS_ADVISE_MR_ADVICE_PREFETCH_WRITE,
};
enum ib_uverbs_advise_mr_flag {
IB_UVERBS_ADVISE_MR_FLAG_FLUSH = 1 << 0,
};
#endif