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eui48: Add address flag helper functions

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This commit is contained in:
Koen Zandberg 2019-06-10 09:34:19 +02:00
parent 632da8ae0a
commit a3f9f03301
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GPG Key ID: 0895A893E6D2985B
1 changed files with 44 additions and 0 deletions
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44
sys/include/net/eui48.h
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@ -56,6 +56,24 @@ static inline void eui48_to_eui64(eui64_t *eui64, const eui48_t *addr)
eui64->uint8[7] = addr->uint8[5];
}
/**
* @name EUI-48 bit flags contained in the first octet
*
* @see IEEE 802-2001 section 9.2
* @{
*/
/**
* @brief Locally administered address.
*/
#define EUI48_LOCAL_FLAG 0x02
/**
* @brief Group type address.
*/
#define EUI48_GROUP_FLAG 0x01
/** @} */
/**
* @brief Generates an IPv6 interface identifier from a 48-bit device address
*
@ -88,6 +106,32 @@ static inline void eui48_from_ipv6_iid(eui48_t *addr, const eui64_t *iid)
addr->uint8[5] = iid->uint8[7];
}
/**
* @brief Set the locally administrated bit in the EUI-48 address.
*
* @see IEEE 802-2001 section 9.2
*
* @param addr ethernet address
*/
static inline void eui48_set_local(eui48_t *addr)
{
addr->uint8[0] |= EUI48_LOCAL_FLAG;
}
/**
* @brief Clear the group address bit to signal the address as individual
* address
*
* @see IEEE 802-2001 section 9.2
*
* @param addr ethernet address
*/
static inline void eui48_clear_group(eui48_t *addr)
{
addr->uint8[0] &= ~EUI48_GROUP_FLAG;
}
#ifdef __cplusplus
}
#endif