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1 /*
2 * PIM for Quagga
3 * Copyright (C) 2008 Everton da Silva Marques
4 *
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.
9 *
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.
14 *
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
18 */
19
20 #ifndef PIM_IGMPV3_H
21 #define PIM_IGMPV3_H
22
23 #include <zebra.h>
24 #include "if.h"
25
26 #define IGMP_V3_CHECKSUM_OFFSET (2)
27 #define IGMP_V3_REPORT_NUMGROUPS_OFFSET (6)
28 #define IGMP_V3_REPORT_GROUPPRECORD_OFFSET (8)
29 #define IGMP_V3_NUMSOURCES_OFFSET (10)
30 #define IGMP_V3_SOURCES_OFFSET (12)
31
32 #define IGMP_GRP_REC_TYPE_MODE_IS_INCLUDE (1)
33 #define IGMP_GRP_REC_TYPE_MODE_IS_EXCLUDE (2)
34 #define IGMP_GRP_REC_TYPE_CHANGE_TO_INCLUDE_MODE (3)
35 #define IGMP_GRP_REC_TYPE_CHANGE_TO_EXCLUDE_MODE (4)
36 #define IGMP_GRP_REC_TYPE_ALLOW_NEW_SOURCES (5)
37 #define IGMP_GRP_REC_TYPE_BLOCK_OLD_SOURCES (6)
38
39 /* GMI: Group Membership Interval */
40 #define PIM_IGMP_GMI_MSEC(qrv,qqi,qri_dsec) ((qrv) * (1000 * (qqi)) + 100 * (qri_dsec))
41
42 /* OQPI: Other Querier Present Interval */
43 #define PIM_IGMP_OQPI_MSEC(qrv,qqi,qri_dsec) ((qrv) * (1000 * (qqi)) + 100 * ((qri_dsec) >> 1))
44
45 /* SQI: Startup Query Interval */
46 #define PIM_IGMP_SQI(qi) (((qi) < 4) ? 1 : ((qi) >> 2))
47
48 /* LMQT: Last Member Query Time */
49 #define PIM_IGMP_LMQT_MSEC(lmqi_dsec, lmqc) ((lmqc) * (100 * (lmqi_dsec)))
50
51 /* OHPI: Older Host Present Interval */
52 #define PIM_IGMP_OHPI_DSEC(qrv,qqi,qri_dsec) ((qrv) * (10 * (qqi)) + (qri_dsec))
53
54 void igmp_group_reset_gmi(struct igmp_group *group);
55 void igmp_source_reset_gmi(struct igmp_sock *igmp, struct igmp_group *group,
56 struct igmp_source *source);
57
58 void igmp_source_free(struct igmp_source *source);
59 void igmp_source_delete(struct igmp_source *source);
60 void igmp_source_delete_expired(struct list *source_list);
61
62 void igmpv3_report_isin(struct igmp_sock *igmp, struct in_addr from,
63 struct in_addr group_addr, int num_sources,
64 struct in_addr *sources);
65 void igmpv3_report_isex(struct igmp_sock *igmp, struct in_addr from,
66 struct in_addr group_addr, int num_sources,
67 struct in_addr *sources, int from_igmp_v2_report);
68 void igmpv3_report_toin(struct igmp_sock *igmp, struct in_addr from,
69 struct in_addr group_addr, int num_sources,
70 struct in_addr *sources);
71 void igmpv3_report_toex(struct igmp_sock *igmp, struct in_addr from,
72 struct in_addr group_addr, int num_sources,
73 struct in_addr *sources);
74 void igmpv3_report_allow(struct igmp_sock *igmp, struct in_addr from,
75 struct in_addr group_addr, int num_sources,
76 struct in_addr *sources);
77 void igmpv3_report_block(struct igmp_sock *igmp, struct in_addr from,
78 struct in_addr group_addr, int num_sources,
79 struct in_addr *sources);
80
81 void igmp_group_timer_lower_to_lmqt(struct igmp_group *group);
82 void igmp_source_timer_lower_to_lmqt(struct igmp_source *source);
83
84 struct igmp_source *igmp_find_source_by_addr(struct igmp_group *group,
85 struct in_addr src_addr);
86
87 void igmp_v3_send_query(struct igmp_group *group, int fd, const char *ifname,
88 char *query_buf, int query_buf_size, int num_sources,
89 struct in_addr dst_addr, struct in_addr group_addr,
90 int query_max_response_time_dsec, uint8_t s_flag,
91 uint8_t querier_robustness_variable,
92 uint16_t querier_query_interval);
93
94 void igmp_v3_recv_query(struct igmp_sock *igmp, const char *from_str,
95 char *igmp_msg);
96
97 int igmp_v3_recv_report(struct igmp_sock *igmp, struct in_addr from,
98 const char *from_str, char *igmp_msg, int igmp_msg_len);
99
100 #endif /* PIM_IGMPV3_H */