diff options
Diffstat (limited to 'inet/netinet/in.h')
| -rw-r--r-- | inet/netinet/in.h | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/inet/netinet/in.h b/inet/netinet/in.h index fa4e016635..686dd1c572 100644 --- a/inet/netinet/in.h +++ b/inet/netinet/in.h @@ -166,11 +166,11 @@ struct sockaddr_in #define IP_RECVRETOPTS 6 /* bool; Receive IP options for response. */ #define IP_RECVDSTADDR 7 /* bool; Receive IP dst addr w/datagram. */ #define IP_RETOPTS 8 /* ip_opts; Set/get IP per-packet options. */ -#define IP_MULTICAST_TTL 9 /* int; TTL for multicast packets */ -#define IP_MULTICAST_LOOP 10 /* bool; Use loopback for multicast */ -#define IP_MULTICAST_IF 11 /* not used; intended to specify interface */ -#define IP_ADD_MEMBERSHIP 12 /* int; join multicast group */ -#define IP_DROP_MEMBERSHIP 13 /* int; leave multicast group */ +#define IP_MULTICAST_IF 9 /* in_addr; set/get IP multicast i/f */ +#define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */ +#define IP_MULTICAST_LOOP 11 /* i_char; set/get IP multicast loopback */ +#define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */ +#define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */ /* Structure used to describe IP options for IP_OPTIONS and IP_RETOPTS. The `ip_dst' field is used for the first-hop gateway when using a @@ -181,6 +181,12 @@ struct ip_opts char ip_opts[40]; /* Actually variable in size. */ }; +/* Structure used for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP. */ +struct ip_mreq +{ + struct in_addr imr_multiaddr; /* IP multicast address of group */ + struct in_addr imr_interface; /* local IP address of interface */ +}; /* Functions to convert between host and network byte order. */ |