---
name: "mpt_handshake_req_reply_wait"
section: "9"
platform: "linux"
package: "linux-manual-3.16"
version: "3.16.56-1+deb8u1"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/mpt_handshake_req_reply_wait"
---

# mpt\_handshake\_req\_reply\_wait(9)

Send MPT request to and receive reply from IOC via doorbell handshake method.

## NAME

mpt\_handshake\_req\_reply\_wait - Send MPT request to and receive reply from IOC via doorbell handshake method.

## SYNOPSIS

**int mpt\_handshake\_req\_reply\_wait(MPT\_ADAPTER \*** *ioc***, int** *reqBytes***, u32 \*** *req***, int** *replyBytes***, u16 \*** *u16reply***, int** *maxwait***, int** *sleepFlag***);**

## ARGUMENTS

*ioc*

Pointer to MPT\_ADAPTER structure

*reqBytes*

Size of the request in bytes

*req*

Pointer to MPT request frame

*replyBytes*

Expected size of the reply in bytes

*u16reply*

Pointer to area where reply should be written

*maxwait*

Max wait time for a reply (in seconds)

*sleepFlag*

Specifies whether the process can sleep

## NOTES

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

Returns 0 for success, non-zero for failure.

## COPYRIGHT