---
title: MBUF_CSUM_REQ_TCP
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.12+]
path: kernel/1644524-anonymous/mbuf_csum_req_tcp
---

# MBUF_CSUM_REQ_TCP

## Declaration

```occ
MBUF_CSUM_REQ_TCP = 0x0002
```

## Discussion

Discussion Indicates the TCP checksum has not been calculated yet.