---
title: mbuf_align_32
framework: Kernel
role: symbol
role_heading: Function
platforms: [macOS 10.4+]
path: kernel/1535692-mbuf_align_32
---

# mbuf_align_32

## Declaration

```occ
errno_t mbuf_align_32(mbuf_t mbuf, size_t len);
```

## Parameters

- `mbuf`: The mbuf.
- `len`: The minimum length of space that should follow the new data location.

## Return Value

Return Value 0 on success, errno error on failure.

## Discussion

Discussion mbuf_align_32 is a replacement for M_ALIGN and MH_ALIGN. mbuf_align_32 will set the data pointer to a location aligned on a four byte boundry with at least 'len' bytes between the data pointer and the end of the data block.