---
title: mbuf_traffic_class_t
framework: Kernel
role: symbol
role_heading: Enumeration
platforms: [macOS 10.7+]
path: kernel/mbuf_traffic_class_t
---

# mbuf_traffic_class_t

Traffic class of a packet

## Declaration

```occ
typedef enum mbuf_traffic_class_t : unsigned int {
    ...
} mbuf_traffic_class_t;
```

## Overview

Overview Property that represent the category of traffic of a packet. This information may be used by the driver and at the link level.

## Topics

### Constants

- [MBUF_TC_BE](kernel/mbuf_traffic_class_t/mbuf_tc_be.md)
- [MBUF_TC_BK](kernel/mbuf_traffic_class_t/mbuf_tc_bk.md)
- [MBUF_TC_VI](kernel/mbuf_traffic_class_t/mbuf_tc_vi.md)
- [MBUF_TC_VO](kernel/mbuf_traffic_class_t/mbuf_tc_vo.md)