tcp.h File Reference

#include "lwip/arch.h"

Go to the source code of this file.

Classes
struct	tcp_hdr

Macros
#define	TCP_HLEN   20
#define	TCP_FIN   0x01U
#define	TCP_SYN   0x02U
#define	TCP_RST   0x04U
#define	TCP_PSH   0x08U
#define	TCP_ACK   0x10U
#define	TCP_URG   0x20U
#define	TCP_ECE   0x40U
#define	TCP_CWR   0x80U
#define	TCP_FLAGS   0x3fU
#define	TCPH_HDRLEN(phdr)   ((u16_t)(lwip_ntohs((phdr)->_hdrlen_rsvd_flags) >> 12))
#define	TCPH_FLAGS(phdr)   ((u16_t)(lwip_ntohs((phdr)->_hdrlen_rsvd_flags) & TCP_FLAGS))
#define	TCPH_HDRLEN_SET(phdr, len)   (phdr)->_hdrlen_rsvd_flags = lwip_htons(((len) << 12) | TCPH_FLAGS(phdr))
#define	TCPH_FLAGS_SET(phdr, flags)   (phdr)->_hdrlen_rsvd_flags = (((phdr)->_hdrlen_rsvd_flags & PP_HTONS(~TCP_FLAGS)) | lwip_htons(flags))
#define	TCPH_HDRLEN_FLAGS_SET(phdr, len, flags)   (phdr)->_hdrlen_rsvd_flags = (u16_t)(lwip_htons((u16_t)((len) << 12) | (flags)))
#define	TCPH_SET_FLAG(phdr, flags)   (phdr)->_hdrlen_rsvd_flags = ((phdr)->_hdrlen_rsvd_flags | lwip_htons(flags))
#define	TCPH_UNSET_FLAG(phdr, flags)   (phdr)->_hdrlen_rsvd_flags = ((phdr)->_hdrlen_rsvd_flags & ~lwip_htons(flags))

Variables
PACK_STRUCT_BEGIN struct tcp_hdr	PACK_STRUCT_STRUCT

Detailed Description

TCP protocol definitions

Macro Definition Documentation

TCP_HLEN

#define TCP_HLEN   20

TCP_FIN

#define TCP_FIN   0x01U

TCP_SYN

#define TCP_SYN   0x02U

TCP_RST

#define TCP_RST   0x04U

TCP_PSH

#define TCP_PSH   0x08U

TCP_ACK

#define TCP_ACK   0x10U

TCP_URG

#define TCP_URG   0x20U

TCP_ECE

#define TCP_ECE   0x40U

TCP_CWR

#define TCP_CWR   0x80U

TCP_FLAGS

#define TCP_FLAGS   0x3fU

TCPH_HDRLEN

#define TCPH_HDRLEN

(

phdr

)

((u16_t)(lwip_ntohs((phdr)->_hdrlen_rsvd_flags) >> 12))

TCPH_FLAGS

#define TCPH_FLAGS

(

phdr

)

((u16_t)(lwip_ntohs((phdr)->_hdrlen_rsvd_flags) & TCP_FLAGS))

TCPH_HDRLEN_SET

#define TCPH_HDRLEN_SET	(		phdr,
			len
	)		(phdr)->_hdrlen_rsvd_flags = lwip_htons(((len) << 12) | TCPH_FLAGS(phdr))

TCPH_FLAGS_SET

#define TCPH_FLAGS_SET	(		phdr,
			flags
	)		(phdr)->_hdrlen_rsvd_flags = (((phdr)->_hdrlen_rsvd_flags & PP_HTONS(~TCP_FLAGS)) | lwip_htons(flags))

TCPH_HDRLEN_FLAGS_SET

#define TCPH_HDRLEN_FLAGS_SET	(		phdr,
			len,
			flags
	)		(phdr)->_hdrlen_rsvd_flags = (u16_t)(lwip_htons((u16_t)((len) << 12) | (flags)))

TCPH_SET_FLAG

#define TCPH_SET_FLAG	(		phdr,
			flags
	)		(phdr)->_hdrlen_rsvd_flags = ((phdr)->_hdrlen_rsvd_flags | lwip_htons(flags))

TCPH_UNSET_FLAG

#define TCPH_UNSET_FLAG	(		phdr,
			flags
	)		(phdr)->_hdrlen_rsvd_flags = ((phdr)->_hdrlen_rsvd_flags & ~lwip_htons(flags))

Variable Documentation

PACK_STRUCT_STRUCT

PACK_STRUCT_BEGIN struct tcp_hdr PACK_STRUCT_STRUCT