diff options
Diffstat (limited to 'inany.h')
| -rw-r--r-- | inany.h | 33 |
1 files changed, 21 insertions, 12 deletions
@@ -9,6 +9,8 @@ #ifndef INANY_H #define INANY_H +struct siphash_state; + /** union inany_addr - Represents either an IPv4 or IPv6 address * @a6: Address as an IPv6 address, may be IPv4-mapped * @v4mapped.zero: All zero-bits for an IPv4 address @@ -41,6 +43,19 @@ extern const union inany_addr inany_any4; #define in4addr_loopback (inany_loopback4.v4mapped.a4) #define in4addr_any (inany_any4.v4mapped.a4) +/** union sockaddr_inany - Either a sockaddr_in or a sockaddr_in6 + * @sa_family: Address family, AF_INET or AF_INET6 + * @sa: Plain struct sockaddr (useful to avoid casts) + * @sa4: IPv4 socket address, valid if sa_family == AF_INET + * @sa6: IPv6 socket address, valid if sa_family == AF_INET6 + */ +union sockaddr_inany { + sa_family_t sa_family; + struct sockaddr sa; + struct sockaddr_in sa4; + struct sockaddr_in6 sa6; +}; + /** inany_v4 - Extract IPv4 address, if present, from IPv[46] address * @addr: IPv4 or IPv6 address * @@ -137,23 +152,17 @@ static inline void inany_from_af(union inany_addr *aa, /** inany_from_sockaddr - Extract IPv[46] address and port number from sockaddr * @aa: Pointer to store IPv[46] address * @port: Pointer to store port number, host order - * @addr: struct sockaddr_in (IPv4) or struct sockaddr_in6 (IPv6) + * @addr: AF_INET or AF_INET6 socket address */ static inline void inany_from_sockaddr(union inany_addr *aa, in_port_t *port, - const void *addr) + const union sockaddr_inany *sa) { - const struct sockaddr *sa = (const struct sockaddr *)addr; - if (sa->sa_family == AF_INET6) { - struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; - - inany_from_af(aa, AF_INET6, &sa6->sin6_addr); - *port = ntohs(sa6->sin6_port); + inany_from_af(aa, AF_INET6, &sa->sa6.sin6_addr); + *port = ntohs(sa->sa6.sin6_port); } else if (sa->sa_family == AF_INET) { - struct sockaddr_in *sa4 = (struct sockaddr_in *)sa; - - inany_from_af(aa, AF_INET, &sa4->sin_addr); - *port = ntohs(sa4->sin_port); + inany_from_af(aa, AF_INET, &sa->sa4.sin_addr); + *port = ntohs(sa->sa4.sin_port); } else { /* Not valid to call with other address families */ ASSERT(0); |