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| author | Moni Shoua <monis@mellanox.com> | 2018-12-11 13:37:52 +0200 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2018-12-18 15:19:46 -0700 |
| commit | ad8a4496757f6f7344011a20a07195bd27e3989c (patch) | |
| tree | 398c3f6da4ba9337c5993d00f30402cfcf5caec3 /include | |
| parent | cbfdd442c43eab8c62bf2ea5127511cd39e9046d (diff) | |
| download | lwn-ad8a4496757f6f7344011a20a07195bd27e3989c.tar.gz lwn-ad8a4496757f6f7344011a20a07195bd27e3989c.zip | |
IB/uverbs: Add support to advise_mr
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/rdma/ib_verbs.h | 4 | ||||
| -rw-r--r-- | include/uapi/rdma/ib_user_ioctl_cmds.h | 8 | ||||
| -rw-r--r-- | include/uapi/rdma/ib_user_ioctl_verbs.h | 9 |
3 files changed, 21 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 5b3b51f00f48..0ec15d673d92 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -2415,6 +2415,10 @@ struct ib_device_ops { int (*dereg_mr)(struct ib_mr *mr); struct ib_mr *(*alloc_mr)(struct ib_pd *pd, enum ib_mr_type mr_type, u32 max_num_sg); + int (*advise_mr)(struct ib_pd *pd, + enum ib_uverbs_advise_mr_advice advice, u32 flags, + struct ib_sge *sg_list, u32 num_sge, + struct uverbs_attr_bundle *attrs); int (*map_mr_sg)(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, unsigned int *sg_offset); int (*check_mr_status)(struct ib_mr *mr, u32 check_mask, diff --git a/include/uapi/rdma/ib_user_ioctl_cmds.h b/include/uapi/rdma/ib_user_ioctl_cmds.h index fbc92d0f0dcd..f04647852add 100644 --- a/include/uapi/rdma/ib_user_ioctl_cmds.h +++ b/include/uapi/rdma/ib_user_ioctl_cmds.h @@ -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, }; diff --git a/include/uapi/rdma/ib_user_ioctl_verbs.h b/include/uapi/rdma/ib_user_ioctl_verbs.h index 6cdf192070a2..9dcd345b852a 100644 --- a/include/uapi/rdma/ib_user_ioctl_verbs.h +++ b/include/uapi/rdma/ib_user_ioctl_verbs.h @@ -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 |