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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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2
drivers/infiniband/core/Makefile
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@@ -35,4 +35,4 @@ ib_ucm-y := ucm.o
ib_uverbs-y := uverbs_main.o uverbs_cmd.o uverbs_marshall.o \
rdma_core.o uverbs_std_types.o uverbs_ioctl.o \
uverbs_ioctl_merge.o uverbs_std_types_cq.o \
uverbs_std_types_flow_action.o
uverbs_std_types_flow_action.o uverbs_std_types_dm.o