IB/uverbs: Add helper to get array size from ptr attribute

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When the parser of an ioctl command has the knowledge that a ptr attribute
in a bundle represents an array of structures, it is useful for it to know
the number of elements in the array. This is done by dividing the
attribute length with the element size.

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>

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Moni Shoua 2018-12-11 13:37:51 +02:00 • committed by Jason Gunthorpe

parent bbc13cda37

commit cbfdd442c4

2 changed files with 27 additions and 7 deletions

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12

drivers/infiniband/hw/mlx5/flow.c

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22

include/rdma/uverbs_ioctl.h

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