ip4.h File Reference

#include "lwip/arch.h"
#include "lwip/ip4_addr.h"

Include dependency graph for ip4.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Classes
struct	ip4_addr_packed
struct	ip_hdr

Macros
#define	IP_HLEN   20
#define	IP_HLEN_MAX   60
#define	IP_RF   0x8000U /* reserved fragment flag */
#define	IP_DF   0x4000U /* don't fragment flag */
#define	IP_MF   0x2000U /* more fragments flag */
#define	IP_OFFMASK   0x1fffU /* mask for fragmenting bits */
#define	IPH_V(hdr)   ((hdr)->_v_hl >> 4)
#define	IPH_HL(hdr)   ((hdr)->_v_hl & 0x0f)
#define	IPH_HL_BYTES(hdr)   ((u8_t)(IPH_HL(hdr) * 4))
#define	IPH_TOS(hdr)   ((hdr)->_tos)
#define	IPH_LEN(hdr)   ((hdr)->_len)
#define	IPH_ID(hdr)   ((hdr)->_id)
#define	IPH_OFFSET(hdr)   ((hdr)->_offset)
#define	IPH_OFFSET_BYTES(hdr)   ((u16_t)((lwip_ntohs(IPH_OFFSET(hdr)) & IP_OFFMASK) * 8U))
#define	IPH_TTL(hdr)   ((hdr)->_ttl)
#define	IPH_PROTO(hdr)   ((hdr)->_proto)
#define	IPH_CHKSUM(hdr)   ((hdr)->_chksum)
#define	IPH_VHL_SET(hdr, v, hl)   (hdr)->_v_hl = (u8_t)((((v) << 4) | (hl)))
#define	IPH_TOS_SET(hdr, tos)   (hdr)->_tos = (tos)
#define	IPH_LEN_SET(hdr, len)   (hdr)->_len = (len)
#define	IPH_ID_SET(hdr, id)   (hdr)->_id = (id)
#define	IPH_OFFSET_SET(hdr, off)   (hdr)->_offset = (off)
#define	IPH_TTL_SET(hdr, ttl)   (hdr)->_ttl = (u8_t)(ttl)
#define	IPH_PROTO_SET(hdr, proto)   (hdr)->_proto = (u8_t)(proto)
#define	IPH_CHKSUM_SET(hdr, chksum)   (hdr)->_chksum = (chksum)

Typedefs
typedef typedefPACK_STRUCT_END struct ip4_addr_packed	ip4_addr_p_t

Variables
PACK_STRUCT_BEGIN struct ip4_addr_packed	PACK_STRUCT_STRUCT

Detailed Description

IPv4 protocol definitions

Definition in file ip4.h.

Macro Definition Documentation

IP_DF

#define IP_DF   0x4000U /* don't fragment flag */

Definition at line 85 of file ip4.h.

IP_HLEN

#define IP_HLEN   20

Definition at line 64 of file ip4.h.

IP_HLEN_MAX

#define IP_HLEN_MAX   60

Definition at line 66 of file ip4.h.

IP_MF

#define IP_MF   0x2000U /* more fragments flag */

Definition at line 86 of file ip4.h.

IP_OFFMASK

#define IP_OFFMASK   0x1fffU /* mask for fragmenting bits */

Definition at line 87 of file ip4.h.

IP_RF

#define IP_RF   0x8000U /* reserved fragment flag */

Definition at line 84 of file ip4.h.

IPH_CHKSUM

#define IPH_CHKSUM

(

hdr

)

((hdr)->_chksum)

Definition at line 114 of file ip4.h.

IPH_CHKSUM_SET

#define IPH_CHKSUM_SET	(		hdr,
			chksum
	)		(hdr)->_chksum = (chksum)

Definition at line 124 of file ip4.h.

IPH_HL

#define IPH_HL

(

hdr

)

((hdr)->_v_hl & 0x0f)

Definition at line 105 of file ip4.h.

IPH_HL_BYTES

#define IPH_HL_BYTES

(

hdr

)

((u8_t)(IPH_HL(hdr) * 4))

Definition at line 106 of file ip4.h.

IPH_ID

#define IPH_ID

(

hdr

)

((hdr)->_id)

Definition at line 109 of file ip4.h.

IPH_ID_SET

#define IPH_ID_SET	(		hdr,
			id
	)		(hdr)->_id = (id)

Definition at line 120 of file ip4.h.

IPH_LEN

#define IPH_LEN

(

hdr

)

((hdr)->_len)

Definition at line 108 of file ip4.h.

IPH_LEN_SET

#define IPH_LEN_SET	(		hdr,
			len
	)		(hdr)->_len = (len)

Definition at line 119 of file ip4.h.

IPH_OFFSET

#define IPH_OFFSET

(

hdr

)

((hdr)->_offset)

Definition at line 110 of file ip4.h.

IPH_OFFSET_BYTES

#define IPH_OFFSET_BYTES

(

hdr

)

((u16_t)((lwip_ntohs(IPH_OFFSET(hdr)) & IP_OFFMASK) * 8U))

Definition at line 111 of file ip4.h.

IPH_OFFSET_SET

#define IPH_OFFSET_SET	(		hdr,
			off
	)		(hdr)->_offset = (off)

Definition at line 121 of file ip4.h.

IPH_PROTO

#define IPH_PROTO

(

hdr

)

((hdr)->_proto)

Definition at line 113 of file ip4.h.

IPH_PROTO_SET

#define IPH_PROTO_SET	(		hdr,
			proto
	)		(hdr)->_proto = (u8_t)(proto)

Definition at line 123 of file ip4.h.

IPH_TOS

#define IPH_TOS

(

hdr

)

((hdr)->_tos)

Definition at line 107 of file ip4.h.

IPH_TOS_SET

#define IPH_TOS_SET	(		hdr,
			tos
	)		(hdr)->_tos = (tos)

Definition at line 118 of file ip4.h.

IPH_TTL

#define IPH_TTL

(

hdr

)

((hdr)->_ttl)

Definition at line 112 of file ip4.h.

IPH_TTL_SET

#define IPH_TTL_SET	(		hdr,
			ttl
	)		(hdr)->_ttl = (u8_t)(ttl)

Definition at line 122 of file ip4.h.

IPH_V

#define IPH_V

(

hdr

)

((hdr)->_v_hl >> 4)

Definition at line 104 of file ip4.h.

IPH_VHL_SET

#define IPH_VHL_SET	(		hdr,
			v,
			hl
	)		(hdr)->_v_hl = (u8_t)((((v) << 4) | (hl)))

Definition at line 117 of file ip4.h.

Typedef Documentation

ip4_addr_p_t

typedef typedefPACK_STRUCT_END struct ip4_addr_packed ip4_addr_p_t

Definition at line 61 of file ip4.h.

Variable Documentation

PACK_STRUCT_STRUCT

PACK_STRUCT_BEGIN struct ip_hdr PACK_STRUCT_STRUCT