mpt_send_handshake_request
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## Name

mpt_send_handshake_request — Send MPT request via doorbell handshake method.

## Synopsis

`int mpt_send_handshake_request (` | int | handle,
| MPT_ADAPTER * | ioc,
| int | reqBytes,
| u32 * | req,
| int | sleepFlag`)`;

## Arguments

`handle`

  Handle of registered MPT protocol driver

`ioc`

  Pointer to MPT adapter structure

`reqBytes`

  Size of the request in bytes

`req`

  Pointer to MPT request frame

`sleepFlag`

  Use schedule if CAN_SLEEP else use udelay.

## Description

This routine is used exclusively to send MptScsiTaskMgmt requests since they are required to be sent via doorbell handshake.

## NOTE

It is the callers responsibility to byte-swap fields in the request which are greater than 1 byte in size.

Returns 0 for success, non-zero for failure.

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