# tcpip_hdr Struct Reference
[uIP packet forwarding]

## Data Fields
u8_t | vhl
u8_t | tos
u16_t | len
u16_t | ipid
u16_t | ipoffset
u8_t | ttl
u8_t | proto
u16_t | ipchksum
u16_t | srcipaddr [2]
u16_t | destipaddr [2]
u16_t | srcport
u16_t | destport
u8_t | seqno [4]
u8_t | ackno [4]
u8_t | tcpoffset
u8_t | flags
u8_t | wnd [2]
u16_t | tcpchksum
u8_t | urgp [2]
u8_t | optdata [4]

## Field Documentation

u8_t tcpip_hdr::tos

u8_t tcpip_hdr::vhl

The documentation for this struct was generated from the following file:

- modules/uip/uip/uip-fw.c