20 lines
670 B
C
20 lines
670 B
C
|
/* From net/if.h */
|
||
|
|
|
||
|
|
#define IFF_MULTICAST 0x800 /* supports multicast */
|
||
|
|
|
||
|
|
/* From netinet/in.h */
|
||
|
|
|
||
|
|
#define INADDR_ALLHOSTS_GROUP (u_long)0xe0000001 /* 224.0.0.1 */
|
||
|
|
#define IP_MULTICAST_IF 0x10 /* set/get IP multicast interface */
|
||
|
|
#define IP_ADD_MEMBERSHIP 0x13 /* add an IP group membership */
|
||
|
|
#define IP_MULTICAST_TTL 0x11 /* set/get IP multicast timetolive */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Argument structure 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 */
|
||
|
|
};
|
||
|
|
|