diff options
| -rw-r--r-- | src/basic/in-addr-util.c | 12 | ||||
| -rw-r--r-- | src/basic/in-addr-util.h | 2 |
2 files changed, 14 insertions, 0 deletions
diff --git a/src/basic/in-addr-util.c b/src/basic/in-addr-util.c index 3b06cb00ad..3927df2955 100644 --- a/src/basic/in-addr-util.c +++ b/src/basic/in-addr-util.c @@ -66,6 +66,18 @@ int in_addr_is_link_local(int family, const union in_addr_union *u) { return -EAFNOSUPPORT; } +int in_addr_is_multicast(int family, const union in_addr_union *u) { + assert(u); + + if (family == AF_INET) + return IN_MULTICAST(be32toh(u->in.s_addr)); + + if (family == AF_INET6) + return IN6_IS_ADDR_MULTICAST(&u->in6); + + return -EAFNOSUPPORT; +} + bool in4_addr_is_localhost(const struct in_addr *a) { assert(a); diff --git a/src/basic/in-addr-util.h b/src/basic/in-addr-util.h index 64a812c322..51a5aa67e4 100644 --- a/src/basic/in-addr-util.h +++ b/src/basic/in-addr-util.h @@ -39,6 +39,8 @@ struct in_addr_data { bool in4_addr_is_null(const struct in_addr *a); int in_addr_is_null(int family, const union in_addr_union *u); +int in_addr_is_multicast(int family, const union in_addr_union *u); + bool in4_addr_is_link_local(const struct in_addr *a); int in_addr_is_link_local(int family, const union in_addr_union *u); |