IB/mlx5: Introduce async DEVX obj query API

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Introduce async DEVX obj query API to get the command response back to
user space once it's ready without blocking when calling the firmware.

The event's data includes a header with some meta data then the firmware
output command data.

The header includes:
- The input 'wr_id' to let application recognizing the response.

The input FD attribute is used to have the event data ready on.
Downstream patches from this series will implement the file ops to let
application read it.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

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Yishai Hadas 2019-01-22 08:29:57 +02:00 • committed by Jason Gunthorpe

parent 6bf8f22aea

commit a124edba26

3 changed files with 177 additions and 1 deletions

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9

include/uapi/rdma/mlx5_user_ioctl_cmds.h

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5

include/uapi/rdma/mlx5_user_ioctl_verbs.h

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