ip.h File Reference

#include "lwip/opt.h"
#include "lwip/def.h"
#include "lwip/pbuf.h"
#include "lwip/ip_addr.h"
#include "lwip/err.h"
#include "lwip/netif.h"

Go to the source code of this file.

Classes
struct	ip_hdr

Macros
#define	IP_HLEN   40
#define	IP_PROTO_ICMP   58
#define	IP_PROTO_UDP   17
#define	IP_PROTO_UDPLITE   136
#define	IP_PROTO_TCP   6
#define	IP_HDRINCL   NULL
#define	IP_PCB_ADDRHINT
#define	IP_PCB
#define	IPH_PROTO(hdr)   (iphdr->nexthdr)
#define	ip_current_netif()   NULL
#define	ip_current_header()   NULL

Functions
void	ip_init (void)
struct netif *	ip_route (struct ip_addr *dest)
void	ip_input (struct pbuf *p, struct netif *inp)
err_t	ip_output (struct pbuf *p, struct ip_addr *src, struct ip_addr *dest, u8_t ttl, u8_t proto)
err_t	ip_output_if (struct pbuf *p, struct ip_addr *src, struct ip_addr *dest, u8_t ttl, u8_t proto, struct netif *netif)

Macro Definition Documentation

#define ip_current_header

(

)

NULL

Definition at line 118 of file ip.h.

#define ip_current_netif

(

)

NULL

Definition at line 117 of file ip.h.

#define IP_HDRINCL   NULL

Definition at line 59 of file ip.h.

#define IP_HLEN   40

Definition at line 46 of file ip.h.

#define IP_PCB

Value:

struct ip_addr local_ip; \
  struct ip_addr remote_ip; \
   /* Socket options */  \
  u16_t so_options;      \
   /* Type Of Service */ \
  u8_t tos;              \
  /* Time To Live */     \
  u8_t ttl;              \
  /* link layer address resolution hint */ \
  IP_PCB_ADDRHINT

Definition at line 71 of file ip.h.

#define IP_PCB_ADDRHINT

Definition at line 64 of file ip.h.

#define IP_PROTO_ICMP   58

Definition at line 48 of file ip.h.

#define IP_PROTO_TCP   6

Definition at line 51 of file ip.h.

#define IP_PROTO_UDP   17

Definition at line 49 of file ip.h.

#define IP_PROTO_UDPLITE   136

Definition at line 50 of file ip.h.

#define IPH_PROTO

(

hdr)

(iphdr->nexthdr)

Definition at line 99 of file ip.h.

Function Documentation

void ip_init

(

void

)

Definition at line 63 of file ip6.c.

void ip_input	(	struct pbuf *	p,
		struct netif *	inp
	)

This function is called by the network interface device driver when an IP packet is received. The function does the basic checks of the IP header such as packet size being at least larger than the header size etc. If the packet was not destined for us, the packet is forwarded (using ip_forward). The IP checksum is always checked.

Finally, the packet is sent to the upper layer protocol input function.

Parameters

p	the received IP packet (p->payload points to IP header)
inp	the netif on which this packet was received

Returns

ERR_OK if the packet was processed (could return ERR_* if it wasn't processed, but currently always returns ERR_OK)

Definition at line 242 of file ip.c.

err_t ip_output	(	struct pbuf *	p,
		struct ip_addr *	src,
		struct ip_addr *	dest,
		u8_t	ttl,
		u8_t	proto
	)

Definition at line 317 of file ip6.c.

err_t ip_output_if	(	struct pbuf *	p,
		struct ip_addr *	src,
		struct ip_addr *	dest,
		u8_t	ttl,
		u8_t	proto,
		struct netif *	netif
	)

Definition at line 260 of file ip6.c.

struct netif* ip_route

(

struct ip_addr *

dest)

Definition at line 75 of file ip6.c.