IPv6 Network Stack More...

Topics
	Options
	Options for v6 of the Internet Protocol

Data Structures
struct	ipv6_hdr_t
	IPv6 Packet header. More...

struct	net_ipv6_stats_t
	IPv6 statistics structure. More...

struct	in6_addr
	Structure used to store an IPv6 address. More...

struct	sockaddr_in6
	Structure used to store an IPv6 address for a socket. More...

Macros
#define	IN6ADDR_ANY_INIT
	Initialize an IPv6 local host address.

#define	IN6ADDR_LOOPBACK_INIT
	Initialize an IPv6 loopback address.

#define	INET6_ADDRSTRLEN 46
	Length of a string form of a maximal IPv6 address.

#define	IN6_IS_ADDR_UNSPECIFIED(a)
	Test if an IPv6 Address is unspecified.

#define	IN6_IS_ADDR_LOOPBACK(a)
	Test if an IPv6 Address is a loopback address.

#define	IN6_IS_ADDR_V4MAPPED(a)
	Test if an IPv6 Address is an IPv4 mapped address.

#define	IN6_IS_ADDR_V4COMPAT(a)
	Test if an IPv6 Address is an IPv4 compatibility address.

#define	IN6_IS_ADDR_LINKLOCAL(a)
	Test if an IPv6 Address is a link-local address.

#define	IN6_IS_ADDR_SITELOCAL(a)
	Test if an IPv6 Address is a site-local address.

#define	IN6_IS_ADDR_MULTICAST(a)
	Test if an IPv6 Address is a multicast address.

#define	IN6_IS_ADDR_MC_NODELOCAL(a)
	Test if an IPv6 Address is a node-local multicast address.

#define	IN6_IS_ADDR_MC_LINKLOCAL(a)
	Test if an IPv6 Address is a link-local multicast address.

#define	IN6_IS_ADDR_MC_SITELOCAL(a)
	Test if an IPv6 Address is a site-local multicast address.

#define	IN6_IS_ADDR_MC_ORGLOCAL(a)
	Test if an IPv6 Address is an organization-local multicast address.

#define	IN6_IS_ADDR_MC_GLOBAL(a)
	Test if an IPv6 Address is a global multicast address.

Functions
net_ipv6_stats_t	net_ipv6_get_stats (void)
	Retrieve statistics from the IPv6 layer.

Variables
const struct in6_addr	in6addr_any
	IPv6 local host address.

const struct in6_addr	in6addr_loopback
	IPv6 loopback address.

Detailed Description

IPv6 Network Stack

Macro Definition Documentation

◆ IN6_IS_ADDR_LINKLOCAL

#define IN6_IS_ADDR_LINKLOCAL ( a )

Value:

(((a)->__s6_addr.__s6_addr8[0] == 0xFE) && \

(((a)->__s6_addr.__s6_addr8[1] & 0xC0) == 0x80))

Test if an IPv6 Address is a link-local address.

This macro tests whether an IPv6 address (struct in6_addr *) is a link-local address.

Parameters

a	The address to test (struct in6_addr *)

Returns: Nonzero if the address is link-local, 0 otherwise.

◆ IN6_IS_ADDR_LOOPBACK

#define IN6_IS_ADDR_LOOPBACK ( a )

Value:

    ((a)->__s6_addr.__s6_addr32[0] == 0 && \
     (a)->__s6_addr.__s6_addr32[1] == 0 && \
     (a)->__s6_addr.__s6_addr32[2] == 0 && \
     (a)->__s6_addr.__s6_addr16[6] == 0 && \
     (a)->__s6_addr.__s6_addr8[14] == 0 && \
     (a)->__s6_addr.__s6_addr8[15] == 1)

Test if an IPv6 Address is a loopback address.

This macro tests whether an IPv6 address (struct in6_addr *) is a loopback address.

Parameters

a	The address to test (struct in6_addr *)

Returns: Nonzero if the address is a loopback, 0 otherwise.

◆ IN6_IS_ADDR_MC_GLOBAL

#define IN6_IS_ADDR_MC_GLOBAL ( a )

Value:

(IN6_IS_ADDR_MULTICAST(a) && \

(((a)->__s6_addr.__s6_addr8[1] & 0x0F) == 0x0E))

IN6_IS_ADDR_MULTICAST

#define IN6_IS_ADDR_MULTICAST(a)

Test if an IPv6 Address is a multicast address.

Definition in.h:377

Test if an IPv6 Address is a global multicast address.

This macro tests whether an IPv6 address (struct in6_addr *) is a global multicast address.

Parameters

a	The address to test (struct in6_addr *)

Returns: Nonzero if the address is a global multicast address, 0 otherwise.

◆ IN6_IS_ADDR_MC_LINKLOCAL

#define IN6_IS_ADDR_MC_LINKLOCAL ( a )

Value:

(IN6_IS_ADDR_MULTICAST(a) && \

(((a)->__s6_addr.__s6_addr8[1] & 0x0F) == 0x02))

Test if an IPv6 Address is a link-local multicast address.

This macro tests whether an IPv6 address (struct in6_addr *) is a link-local multicast address.

Parameters

a	The address to test (struct in6_addr *)

Returns: Nonzero if the address is a link-local multicast address, 0 otherwise.

◆ IN6_IS_ADDR_MC_NODELOCAL

#define IN6_IS_ADDR_MC_NODELOCAL ( a )

Value:

(IN6_IS_ADDR_MULTICAST(a) && \

(((a)->__s6_addr.__s6_addr8[1] & 0x0F) == 0x01))

Test if an IPv6 Address is a node-local multicast address.

This macro tests whether an IPv6 address (struct in6_addr *) is a node-local multicast address.

Parameters

a	The address to test (struct in6_addr *)

Returns: Nonzero if the address is a node-local multicast address, 0 otherwise.

◆ IN6_IS_ADDR_MC_ORGLOCAL

#define IN6_IS_ADDR_MC_ORGLOCAL ( a )

Value:

(IN6_IS_ADDR_MULTICAST(a) && \

(((a)->__s6_addr.__s6_addr8[1] & 0x0F) == 0x08))

Test if an IPv6 Address is an organization-local multicast address.

This macro tests whether an IPv6 address (struct in6_addr *) is an organization-local multicast address.

Parameters

a	The address to test (struct in6_addr *)

Returns: Nonzero if the address is an organization-local multicast address, 0 otherwise.

◆ IN6_IS_ADDR_MC_SITELOCAL

#define IN6_IS_ADDR_MC_SITELOCAL ( a )

Value:

(IN6_IS_ADDR_MULTICAST(a) && \

(((a)->__s6_addr.__s6_addr8[1] & 0x0F) == 0x05))

Test if an IPv6 Address is a site-local multicast address.

This macro tests whether an IPv6 address (struct in6_addr *) is a site-local multicast address.

Parameters

a	The address to test (struct in6_addr *)

Returns: Nonzero if the address is a site-local multicast address, 0 otherwise.

◆ IN6_IS_ADDR_MULTICAST

#define IN6_IS_ADDR_MULTICAST ( a )

Value:

((a)->__s6_addr.__s6_addr8[0] == 0xFF)

Test if an IPv6 Address is a multicast address.

This macro tests whether an IPv6 address (struct in6_addr *) is a multicast address.

Parameters

a	The address to test (struct in6_addr *)

Returns: Nonzero if the address is multicast, 0 otherwise.

◆ IN6_IS_ADDR_SITELOCAL

#define IN6_IS_ADDR_SITELOCAL ( a )

Value:

(((a)->__s6_addr.__s6_addr8[0] == 0xFE) && \

(((a)->__s6_addr.__s6_addr8[1] & 0xC0) == 0xC0))

Test if an IPv6 Address is a site-local address.

This macro tests whether an IPv6 address (struct in6_addr *) is a site-local address.

Parameters

a	The address to test (struct in6_addr *)

Returns: Nonzero if the address is site-local, 0 otherwise.

◆ IN6_IS_ADDR_UNSPECIFIED

#define IN6_IS_ADDR_UNSPECIFIED ( a )

Value:

    ((a)->__s6_addr.__s6_addr32[0] == 0 && \
     (a)->__s6_addr.__s6_addr32[1] == 0 && \
     (a)->__s6_addr.__s6_addr32[2] == 0 && \
     (a)->__s6_addr.__s6_addr32[3] == 0)

Test if an IPv6 Address is unspecified.

This macro tests whether an IPv6 address (struct in6_addr *) is an unspecified address.

Parameters

a	The address to test (struct in6_addr *)

Returns: Nonzero if the address is unspecified, 0 otherwise.

◆ IN6_IS_ADDR_V4COMPAT

#define IN6_IS_ADDR_V4COMPAT ( a )

Value:

    ((a)->__s6_addr.__s6_addr32[0] == 0 && \
     (a)->__s6_addr.__s6_addr32[1] == 0 && \
     (a)->__s6_addr.__s6_addr32[2] == 0 && \
     (a)->__s6_addr.__s6_addr32[3] != 0 && \
     (a)->__s6_addr.__s6_addr8[15] != 1)

Test if an IPv6 Address is an IPv4 compatibility address.

This macro tests whether an IPv6 address (struct in6_addr *) is an IPv4 compatibility address.

Parameters

a	The address to test (struct in6_addr *)

Returns: Nonzero if the address is IPv4 compat, 0 otherwise.

◆ IN6_IS_ADDR_V4MAPPED

#define IN6_IS_ADDR_V4MAPPED ( a )

Value:

    ((a)->__s6_addr.__s6_addr32[0] == 0 &&      \
     (a)->__s6_addr.__s6_addr32[1] == 0 &&      \
     (a)->__s6_addr.__s6_addr16[4] == 0 &&      \
     (a)->__s6_addr.__s6_addr16[5] == 0xFFFF)

Test if an IPv6 Address is an IPv4 mapped address.

This macro tests whether an IPv6 address (struct in6_addr *) is an IPv4 mapped address.

Parameters

a	The address to test (struct in6_addr *)

Returns: Nonzero if the address is IPv4 mapped, 0 otherwise.

◆ IN6ADDR_ANY_INIT

#define IN6ADDR_ANY_INIT

Value:

{{{ 0, 0, 0, 0, 0, 0, 0, 0, \

0, 0, 0, 0, 0, 0, 0, 0 }}}

Initialize an IPv6 local host address.

This macro can be used to initialize a struct in6_addr to any local address. It functions similarly to INADDR_ANY for IPv4.

◆ IN6ADDR_LOOPBACK_INIT

#define IN6ADDR_LOOPBACK_INIT

Value:

{{{ 0, 0, 0, 0, 0, 0, 0, 0, \

0, 0, 0, 0, 0, 0, 0, 1 }}}

Initialize an IPv6 loopback address.

This macro can be used to initialize a struct in6_addr to the loopback address.

◆ INET6_ADDRSTRLEN

#define INET6_ADDRSTRLEN 46

Length of a string form of a maximal IPv6 address.

Referenced by main(), and print_addrinfo().

Function Documentation

◆ net_ipv6_get_stats()

net_ipv6_stats_t net_ipv6_get_stats ( void )

Retrieve statistics from the IPv6 layer.

Returns: The global IPv6 stats structure.

Variable Documentation

◆ in6addr_any

const struct in6_addr in6addr_any

extern

IPv6 local host address.

This constant variable contains the IPv6 local host address.

Referenced by main().

◆ in6addr_loopback

const struct in6_addr in6addr_loopback

extern

IPv6 loopback address.

This constant variable contains the IPv6 loopback address.

Topics

Data Structures

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ IN6_IS_ADDR_LINKLOCAL

◆ IN6_IS_ADDR_LOOPBACK

◆ IN6_IS_ADDR_MC_GLOBAL

◆ IN6_IS_ADDR_MC_LINKLOCAL

◆ IN6_IS_ADDR_MC_NODELOCAL

◆ IN6_IS_ADDR_MC_ORGLOCAL

◆ IN6_IS_ADDR_MC_SITELOCAL

◆ IN6_IS_ADDR_MULTICAST

◆ IN6_IS_ADDR_SITELOCAL

◆ IN6_IS_ADDR_UNSPECIFIED

◆ IN6_IS_ADDR_V4COMPAT

◆ IN6_IS_ADDR_V4MAPPED

◆ IN6ADDR_ANY_INIT

◆ IN6ADDR_LOOPBACK_INIT

◆ INET6_ADDRSTRLEN

Function Documentation

◆ net_ipv6_get_stats()

Variable Documentation

◆ in6addr_any

◆ in6addr_loopback