3 * Copyright (C) 2008 Everton da Silva Marques
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; see the file COPYING; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
28 #define IGMP_V3_CHECKSUM_OFFSET (2)
29 #define IGMP_V3_REPORT_NUMGROUPS_OFFSET (6)
30 #define IGMP_V3_REPORT_GROUPPRECORD_OFFSET (8)
31 #define IGMP_V3_NUMSOURCES_OFFSET (10)
32 #define IGMP_V3_SOURCES_OFFSET (12)
34 #define IGMP_GRP_REC_TYPE_MODE_IS_INCLUDE (1)
35 #define IGMP_GRP_REC_TYPE_MODE_IS_EXCLUDE (2)
36 #define IGMP_GRP_REC_TYPE_CHANGE_TO_INCLUDE_MODE (3)
37 #define IGMP_GRP_REC_TYPE_CHANGE_TO_EXCLUDE_MODE (4)
38 #define IGMP_GRP_REC_TYPE_ALLOW_NEW_SOURCES (5)
39 #define IGMP_GRP_REC_TYPE_BLOCK_OLD_SOURCES (6)
41 /* GMI: Group Membership Interval */
42 #define PIM_IGMP_GMI_MSEC(qrv,qqi,qri_dsec) ((qrv) * (1000 * (qqi)) + 100 * (qri_dsec))
44 /* OQPI: Other Querier Present Interval */
45 #define PIM_IGMP_OQPI_MSEC(qrv,qqi,qri_dsec) ((qrv) * (1000 * (qqi)) + 100 * ((qri_dsec) >> 1))
47 /* SQI: Startup Query Interval */
48 #define PIM_IGMP_SQI(qi) (((qi) < 4) ? 1 : ((qi) >> 2))
50 /* LMQT: Last Member Query Time */
51 #define PIM_IGMP_LMQT_MSEC(lmqi_dsec, lmqc) ((lmqc) * (100 * (lmqi_dsec)))
53 /* OHPI: Older Host Present Interval */
54 #define PIM_IGMP_OHPI_DSEC(qrv,qqi,qri_dsec) ((qrv) * (10 * (qqi)) + (qri_dsec))
56 void igmp_group_reset_gmi(struct gm_group
*group
);
57 void igmp_source_reset_gmi(struct gm_group
*group
, struct gm_source
*source
);
59 void igmp_source_free(struct gm_source
*source
);
60 void igmp_source_delete(struct gm_source
*source
);
61 void igmp_source_delete_expired(struct list
*source_list
);
63 void igmpv3_report_isin(struct gm_sock
*igmp
, struct in_addr from
,
64 struct in_addr group_addr
, int num_sources
,
65 struct in_addr
*sources
);
66 void igmpv3_report_isex(struct gm_sock
*igmp
, struct in_addr from
,
67 struct in_addr group_addr
, int num_sources
,
68 struct in_addr
*sources
, int from_igmp_v2_report
);
69 void igmpv3_report_toin(struct gm_sock
*igmp
, struct in_addr from
,
70 struct in_addr group_addr
, int num_sources
,
71 struct in_addr
*sources
);
72 void igmpv3_report_toex(struct gm_sock
*igmp
, struct in_addr from
,
73 struct in_addr group_addr
, int num_sources
,
74 struct in_addr
*sources
);
75 void igmpv3_report_allow(struct gm_sock
*igmp
, struct in_addr from
,
76 struct in_addr group_addr
, int num_sources
,
77 struct in_addr
*sources
);
78 void igmpv3_report_block(struct gm_sock
*igmp
, struct in_addr from
,
79 struct in_addr group_addr
, int num_sources
,
80 struct in_addr
*sources
);
82 void igmp_group_timer_lower_to_lmqt(struct gm_group
*group
);
83 void igmp_source_timer_lower_to_lmqt(struct gm_source
*source
);
85 struct gm_source
*igmp_find_source_by_addr(struct gm_group
*group
,
86 struct in_addr src_addr
);
88 void igmp_v3_send_query(struct gm_group
*group
, int fd
, const char *ifname
,
89 char *query_buf
, int query_buf_size
, int num_sources
,
90 struct in_addr dst_addr
, struct in_addr group_addr
,
91 int query_max_response_time_dsec
, uint8_t s_flag
,
92 uint8_t querier_robustness_variable
,
93 uint16_t querier_query_interval
);
95 void igmp_v3_recv_query(struct gm_sock
*igmp
, const char *from_str
,
98 int igmp_v3_recv_report(struct gm_sock
*igmp
, struct in_addr from
,
99 const char *from_str
, char *igmp_msg
, int igmp_msg_len
);
101 #endif /* PIM_IGMPV3_H */