IPv4 Network Stack More...

Topics
	Options
	Options for v4 of the Internet Protocol

Data Structures
struct	ip_hdr_t
	IPv4 Packet header. More...

struct	net_ipv4_stats_t
	IPv4 statistics structure. More...

struct	in_addr
	Structure used to store an IPv4 address. More...

struct	sockaddr_in
	Structure used to store an IPv4 address for a socket. More...

Macros
#define	INADDR_ANY 0x00000000
	Local IPv4 host address.

#define	INADDR_BROADCAST 0xFFFFFFFF
	IPv4 broadcast address.

#define	INADDR_NONE 0xFFFFFFFF
	IPv4 error address.

#define	INET_ADDRSTRLEN 16
	Length of a string form of a maximal IPv4 address.

Typedefs
typedef uint32_t	in_addr_t
	32-bit value used to store an IPv4 address.

Functions
net_ipv4_stats_t	net_ipv4_get_stats (void)
	Retrieve statistics from the IPv4 layer.

uint32_t __pure	net_ipv4_address (const uint8_t addr[4])
	Create a 32-bit IP address, based on the individual numbers contained within the IP.

void	net_ipv4_parse_address (uint32_t addr, uint8_t out[4])
	Parse an IP address that is packet into a uint32_t into an array of the individual bytes.

Detailed Description

IPv4 Network Stack

Macro Definition Documentation

◆ INADDR_ANY

#define INADDR_ANY 0x00000000

Local IPv4 host address.

This address can be used by many things if you prefer to not specify the local address, and would rather it be detected automatically.

Referenced by httpd(), and server_thread().

◆ INADDR_BROADCAST

#define INADDR_BROADCAST 0xFFFFFFFF

IPv4 broadcast address.

This address is the normal IPv4 broadcast address (255.255.255.255).

◆ INADDR_NONE

#define INADDR_NONE 0xFFFFFFFF

IPv4 error address.

This address is non-standard, but is available on many systems. It is used to detect failure from some functions that normally return addresses (such as the inet_addr function).

◆ INET_ADDRSTRLEN

#define INET_ADDRSTRLEN 16

Length of a string form of a maximal IPv4 address.

Typedef Documentation

◆ in_addr_t

typedef uint32_t in_addr_t

32-bit value used to store an IPv4 address.

Function Documentation

◆ net_ipv4_address()

uint32_t __pure net_ipv4_address ( const uint8_t addr[4] )

Create a 32-bit IP address, based on the individual numbers contained within the IP.

Parameters

addr	Array of IP address octets.

Returns: The address, in host byte order.

◆ net_ipv4_get_stats()

net_ipv4_stats_t net_ipv4_get_stats ( void )

Retrieve statistics from the IPv4 layer.

Returns: The net_ipv4_stats_t structure.

Referenced by main().

◆ net_ipv4_parse_address()

void net_ipv4_parse_address	(	uint32_t	addr,
		uint8_t	out[4] )

Parse an IP address that is packet into a uint32_t into an array of the individual bytes.