| 1 | #ifndef _IGMP_H
|
|---|
| 2 | #define _IGMP_H
|
|---|
| 3 |
|
|---|
| 4 | #define IGMP_QUERY 0x11
|
|---|
| 5 | #define IGMPv1_REPORT 0x12
|
|---|
| 6 | #define IGMPv2_REPORT 0x16
|
|---|
| 7 | #define IGMP_LEAVE 0x17
|
|---|
| 8 | #define GROUP_ALL_HOSTS 0xe0000001 /* 224.0.0.1 Host byte order */
|
|---|
| 9 |
|
|---|
| 10 | struct igmp {
|
|---|
| 11 | uint8_t type;
|
|---|
| 12 | uint8_t response_time;
|
|---|
| 13 | uint16_t chksum;
|
|---|
| 14 | in_addr group;
|
|---|
| 15 | } PACKED;
|
|---|
| 16 |
|
|---|
| 17 | struct igmp_ip_t { /* Format of an igmp ip packet */
|
|---|
| 18 | struct iphdr ip;
|
|---|
| 19 | uint8_t router_alert[4]; /* Router alert option */
|
|---|
| 20 | struct igmp igmp;
|
|---|
| 21 | } PACKED;
|
|---|
| 22 |
|
|---|
| 23 | #endif /* _IGMP_H */
|
|---|
