ip.h File Reference

Definitions for internet protocol version 4. More...

#include <net/if_arp.h>
#include <dev/netbuf.h>
#include <net/if_var.h>

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Data Structures
struct	ip
	Structure of an internet header. More...
struct	ip_opt
Defines
#define	IP_IS_MULTICAST(_a)   ((ntohl(_a) & 0xF0000000U) == 0xE0000000U)
#define	IPVERSION   4
	IP protocol version.
#define	IP_DF   0x4000
	Don't fragment flag.
#define	IP_MF   0x2000
	More fragments flag.
#define	IP_OFFMASK   0x1fff
	Mask for fragmenting bits.
#define	IPOPT_EOL   0
	End of option list.
#define	IPOPT_NOP   1
	No operation.
#define	IPOPT_RR   7
	Record packet route.
#define	IPOPT_TS   68
	Timestamp.
#define	IPOPT_SECURITY   130
	Provide s,c,h,tcc.
#define	IPOPT_LSRR   131
	Loose source route.
#define	IPOPT_SATID   136
	Satnet id.
#define	IPOPT_SSRR   137
	Strict source route.
#define	IPOPT_OPTVAL   0
	Option identifier offset.
#define	IPOPT_OLEN   1
	Option length offset.
#define	IPOPT_OFFSET   2
	Offset within option.
#define	IPOPT_MINOFF   4
	Minimum offset within option.
#define	MAXTTL   255
	Maximum time to live (seconds).
#define	IPDEFTTL   64
	Default time to live.
#define	IPFRAGTTL   60
	Time to live for fragments.
#define	IPTTLDEC   1
	Subtracted from time to live when forwarding.
Typedefs
typedef struct ip	IPHDR
	Internet header type.
typedef struct ip_opt	IPHDR_OPT
typedef int(*	NutIpFilterFunc )(uint32_t)
Functions
int	NutIpOutput (uint8_t proto, uint32_t dest, NETBUF *nb)
	Send IP datagram.
void	NutIpInput (NUTDEVICE *dev, NETBUF *nb)
	Process incoming IP datagrams.
void	NutIpSetInputFilter (NutIpFilterFunc callbackFunc)
	Set filter function for incoming IP datagrams.
int	NutRegisterIpHandler (uint8_t prot, int(*hdlr)(NUTDEVICE *, NETBUF *))
	Register an additional Ethernet protocol handler.
Variables
int(*	ip_demux )(NUTDEVICE *, NETBUF *)
	Pointer to an optional demultiplexer.

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Detailed Description

Definitions for internet protocol version 4.

RFC 791.

Definition in file ip.h.

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Typedef Documentation

typedef int(* NutIpFilterFunc)(uint32_t)

Definition at line 233 of file ip.h.