---
title: MBUF_DONTWAIT
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.12+]
path: kernel/1644523-anonymous/mbuf_dontwait
---

# MBUF_DONTWAIT

## Declaration

```occ
MBUF_DONTWAIT = 1
```

## Discussion

Discussion Don't allow the mbuf allocation call to block, if blocking is necessary fail and return immediately.