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net: ipv6: add function checking if given address is ULA

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This patch adds a helper function to verify if given IPv6 address is
a unique local address.

Signed-off-by: Hubert Miś <hubert.mis@nordicsemi.no>
This commit is contained in:
Hubert Miś 2021-02-07 12:25:19 +01:00 committed by Jukka Rissanen
parent fe6266ea7d
commit 9831ddd14b
1 changed files with 12 additions and 0 deletions
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12
include/net/net_ip.h
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@ -763,6 +763,18 @@ static inline bool net_ipv6_is_ll_addr(const struct in6_addr *addr)
return UNALIGNED_GET(&addr->s6_addr16[0]) == htons(0xFE80);
}
/**
* @brief Check if the given IPv6 address is a unique local address.
*
* @param addr A valid pointer on an IPv6 address
*
* @return True if it is, false otherwise.
*/
static inline bool net_ipv6_is_ula_addr(const struct in6_addr *addr)
{
return addr->s6_addr[0] == 0xFD;
}
/**
* @brief Return pointer to any (all bits zeros) IPv6 address.
*