IEEE EUI-48 identifier

Definition and IPv6 IID conversion for IEEE EUI-48 identifiers. More...

Detailed Description

Definition and IPv6 IID conversion for IEEE EUI-48 identifiers.

Files
file	eui48.h
	Definition and IPv6 IID conversion for IEEE EUI-48 identifiers.

Data Structures
struct	eui48_t
	Data type to represent an EUI-48. More...

Functions
static void	eui48_set_local (eui48_t *addr)
	Set the locally administrated bit in the EUI-48 address. More...
static void	eui48_clear_group (eui48_t *addr)
	Clear the group address bit to signal the address as individual address. More...
static void	eui48_to_eui64 (eui64_t *eui64, const eui48_t *addr)
	Generates an EUI-64 from a 48-bit device address. More...
static void	eui64_to_eui48 (eui48_t *eui48, const eui64_t *addr)
	Generates an EUI-48 from a 64-bit device address. More...
static void	eui48_to_ipv6_iid (eui64_t *iid, const eui48_t *addr)
	Generates an IPv6 interface identifier from a 48-bit device address. More...
static void	eui48_from_ipv6_iid (eui48_t *addr, const eui64_t *iid)
	Convert a 64-bit IPv6 IID into a EUI-48 device address. More...

EUI-48 bit flags contained in the first octet
See also IEEE 802-2001 section 9.2
#define	EUI48_LOCAL_FLAG   0x02
	Locally administered address.
#define	EUI48_GROUP_FLAG   0x01
	Group type address.

Function Documentation

eui48_clear_group()

static void eui48_clear_group ( eui48_t *  addr )

inlinestatic

Clear the group address bit to signal the address as individual address.

See also

IEEE 802-2001 section 9.2

Parameters

addr	ethernet address

Definition at line 77 of file eui48.h.

eui48_from_ipv6_iid()

static void eui48_from_ipv6_iid ( eui48_t *  addr, const eui64_t *  iid  )

inlinestatic

Convert a 64-bit IPv6 IID into a EUI-48 device address.

Parameters

[out]	addr	the resulting EUI-48
[in]	iid	a 64-bit IPv6 interface identifier

Definition at line 149 of file eui48.h.

eui48_set_local()

static void eui48_set_local ( eui48_t *  addr )

inlinestatic

Set the locally administrated bit in the EUI-48 address.

See also

IEEE 802-2001 section 9.2

Parameters

addr	ethernet address

Definition at line 64 of file eui48.h.

eui48_to_eui64()

static void eui48_to_eui64 ( eui64_t *  eui64, const eui48_t *  addr  )

inlinestatic

Generates an EUI-64 from a 48-bit device address.

See also

RFC 2464, section 4

Parameters

[out]	eui64	the resulting EUI-64.
[in]	addr	a 48-bit device address

Definition at line 90 of file eui48.h.

eui48_to_ipv6_iid()

static void eui48_to_ipv6_iid ( eui64_t *  iid, const eui48_t *  addr  )

inlinestatic

Generates an IPv6 interface identifier from a 48-bit device address.

Note

The IPv6 IID is derived from the EUI-64 by flipping the U/L bit.

See also

RFC 2464, section 4

RFC 4291, section 2.5.1

Parameters

[out]	iid	the resulting EUI-64.
[in]	addr	a 48-bit device address

Definition at line 137 of file eui48.h.

eui64_to_eui48()

static void eui64_to_eui48 ( eui48_t *  eui48, const eui64_t *  addr  )

inlinestatic

Generates an EUI-48 from a 64-bit device address.

Warning

The resulting EUI-48 is not guaranteed to be unique and, hence, marked as only locally unique.

Parameters

[out]	eui48	the resulting EUI-48.
[in]	addr	a 64-bit device address

Definition at line 111 of file eui48.h.