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IB/uverbs: Add IDRs array attribute type to ioctl() interface

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Methods sometimes need to get a flexible set of IDRs and not a strict set
as can be achieved today by the conventional IDR attribute. Add a new
IDRS_ARRAY attribute to the generic uverbs ioctl layer.

IDRS_ARRAY points to array of idrs of the same object type and same access
rights, only write and read are supported.

Signed-off-by: Guy Levi <guyle@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>``
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Guy Levi
2018-09-06 17:27:01 +03:00
committed by Jason Gunthorpe
parent e806f9328b
commit 70cd20aed0
4 changed files with 201 additions and 3 deletions
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7
include/uapi/rdma/rdma_user_ioctl_cmds.h
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@@ -53,7 +53,7 @@ enum {
struct ib_uverbs_attr {
__u16 attr_id; /* command specific type attribute */
__u16 len; /* only for pointers */
__u16 len; /* only for pointers and IDRs array */
__u16 flags; /* combination of UVERBS_ATTR_F_XXXX */
union {
struct {
@@ -63,7 +63,10 @@ struct ib_uverbs_attr {
__u16 reserved;
} attr_data;
union {
/* Used by PTR_IN/OUT, ENUM_IN and IDR */
/*
* ptr to command, inline data, idr/fd or
* ptr to __u32 array of IDRs
*/
__aligned_u64 data;
/* Used by FD_IN and FD_OUT */
__s64 data_s64;