diff options
Diffstat (limited to 'inany.h')
| -rw-r--r-- | inany.h | 34 |
1 files changed, 32 insertions, 2 deletions
@@ -104,6 +104,36 @@ static inline struct in_addr *inany_v4(const union inany_addr *addr) return (struct in_addr *)&addr->v4mapped.a4; } +/** inany_prefix_v4() - Extract IPv4 address and prefix length from inany + * @addr: IPv4 (as mapped) or IPv6 address + * @prefix_len: Prefix length in IPv6 format (96-128 for IPv4) + * @v4_plen: Set to IPv4 prefix length (0-32) on success + * + * Return: IPv4 address if @addr is IPv4, NULL otherwise + */ +static inline struct in_addr *inany_prefix_v4(const union inany_addr *addr, + int prefix_len, int *v4_plen) +{ + struct in_addr *a4 = inany_v4(addr); + + if (!a4) + return NULL; + + *v4_plen = prefix_len - 96; + + return a4; +} + +/** inany_af() - Get address family of IPv[46] address + * @addr: IPv4 or IPv6 address + * + * Return: AF_INET for IPv4, AF_INET6 for IPv6 + */ +static inline sa_family_t inany_af(const union inany_addr *addr) +{ + return inany_v4(addr) ? AF_INET : AF_INET6; +} + /** inany_default_prefix_len() - Get default prefix length for address * @addr: IPv4 or iPv6 address * @@ -112,9 +142,9 @@ static inline struct in_addr *inany_v4(const union inany_addr *addr) */ static inline int inany_default_prefix_len(const union inany_addr *addr) { - const struct in_addr *v4 = inany_v4(addr); + const struct in_addr *a4 = inany_v4(addr); - return v4 ? ip4_class_prefix_len(v4) + 96 : 64; + return a4 ? ip4_class_prefix_len(a4) + 96 : 64; } /** inany_equals - Compare two IPv[46] addresses |