| #ifndef _IGMP_H |
| #define _IGMP_H |
| |
| /* Max interval between IGMP packets */ |
| #define IGMP_INTERVAL (10*TICKS_PER_SEC) |
| #define IGMPv1_ROUTER_PRESENT_TIMEOUT (400*TICKS_PER_SEC) |
| |
| #define IGMP_QUERY 0x11 |
| #define IGMPv1_REPORT 0x12 |
| #define IGMPv2_REPORT 0x16 |
| #define IGMP_LEAVE 0x17 |
| #define GROUP_ALL_HOSTS 0xe0000001 /* 224.0.0.1 Host byte order */ |
| |
| struct igmp { |
| uint8_t type; |
| uint8_t response_time; |
| uint16_t chksum; |
| in_addr group; |
| }; |
| |
| struct igmp_ip_t { /* Format of an igmp ip packet */ |
| struct iphdr ip; |
| uint8_t router_alert[4]; /* Router alert option */ |
| struct igmp igmp; |
| }; |
| |
| #endif /* _IGMP_H */ |