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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 */ |