---
name: "packet.transport.ddp"
section: "3"
platform: "linux"
package: "nfstest"
version: "3.2-3"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/packet.transport.ddp"
---

# packet.transport.ddp(3)

DDP module

## NAME

packet.transport.ddp - DDP module

## DESCRIPTION

Decode DDP layer.

RFC 5041 Direct Data Placement over Reliable Transports

## CLASSES

### class DDP(baseobj.BaseObj)

```
DDP object
Usage:
    from packet.transport.ddp import DDP
    x = DDP(pktt)
Object definition:
DDP(
    tagged  = int,  # Tagged message
    lastfl  = int,  # Last flag
    version = int,  # DDP version
    psize   = int,  # Payload size
    [
        # For tagged message:
        stag    = int,  # Steering tag
        offset  = int,  # Tagged offset
    ] | [
        # For untagged message:
        queue   = int,  # Queue number
        msn     = int,  # Message sequence number
        offset  = int,  # Message offset
    ]
)
```

**Methods defined here:** ---------------------

**\_\_init\_\_(self, pktt)** Constructor

Initialize object's private data.

- **pktt:**

  Packet trace object (packet.pktt.Pktt) so this layer has access to the parent layers.

## SEE ALSO

**[baseobj(3)](/baseobj/3.md),** **[packet.transport.rdmap(3)](/packet.transport.rdmap/3.md),** **[packet.utils(3)](/packet.utils/3.md)**

## BUGS

No known bugs.

## AUTHOR

Jorge Mora (mora@netapp.com)