pimd/pim_igmpv3.h

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * PIM for Quagga
   4  * Copyright (C) 2008  Everton da Silva Marques
   5  */
   6
   7 #ifndef PIM_IGMPV3_H
   8 #define PIM_IGMPV3_H
   9
  10 #include <zebra.h>
  11 #include "if.h"
  12
  13 #include "pim_igmp.h"
  14
  15 #define IGMP_V3_CHECKSUM_OFFSET            (2)
  16 #define IGMP_V3_REPORT_NUMGROUPS_OFFSET    (6)
  17 #define IGMP_V3_REPORT_GROUPPRECORD_OFFSET (8)
  18 #define IGMP_V3_NUMSOURCES_OFFSET          (10)
  19 #define IGMP_V3_SOURCES_OFFSET             (12)
  20
  21 #define IGMP_GRP_REC_TYPE_MODE_IS_INCLUDE        (1)
  22 #define IGMP_GRP_REC_TYPE_MODE_IS_EXCLUDE        (2)
  23 #define IGMP_GRP_REC_TYPE_CHANGE_TO_INCLUDE_MODE (3)
  24 #define IGMP_GRP_REC_TYPE_CHANGE_TO_EXCLUDE_MODE (4)
  25 #define IGMP_GRP_REC_TYPE_ALLOW_NEW_SOURCES      (5)
  26 #define IGMP_GRP_REC_TYPE_BLOCK_OLD_SOURCES      (6)
  27
  28 /* GMI: Group Membership Interval */
  29 #define PIM_IGMP_GMI_MSEC(qrv,qqi,qri_dsec) ((qrv) * (1000 * (qqi)) + 100 * (qri_dsec))
  30
  31 /* OQPI: Other Querier Present Interval */
  32 #define PIM_IGMP_OQPI_MSEC(qrv,qqi,qri_dsec) ((qrv) * (1000 * (qqi)) + 100 * ((qri_dsec) >> 1))
  33
  34 /* SQI: Startup Query Interval */
  35 #define PIM_IGMP_SQI(qi) (((qi) < 4) ? 1 : ((qi) >> 2))
  36
  37 /* LMQT: Last Member Query Time */
  38 #define PIM_IGMP_LMQT_MSEC(lmqi_dsec, lmqc) ((lmqc) * (100 * (lmqi_dsec)))
  39
  40 /* OHPI: Older Host Present Interval */
  41 #define PIM_IGMP_OHPI_DSEC(qrv,qqi,qri_dsec) ((qrv) * (10 * (qqi)) + (qri_dsec))
  42
  43 #if PIM_IPV == 4
  44 void igmp_group_reset_gmi(struct gm_group *group);
  45 void igmp_source_reset_gmi(struct gm_group *group, struct gm_source *source);
  46
  47 void igmp_source_free(struct gm_source *source);
  48 void igmp_source_delete(struct gm_source *source);
  49 void igmp_source_delete_expired(struct list *source_list);
  50
  51 void igmpv3_report_isin(struct gm_sock *igmp, struct in_addr from,
  52                         struct in_addr group_addr, int num_sources,
  53                         struct in_addr *sources);
  54 void igmpv3_report_isex(struct gm_sock *igmp, struct in_addr from,
  55                         struct in_addr group_addr, int num_sources,
  56                         struct in_addr *sources, int from_igmp_v2_report);
  57 void igmpv3_report_toin(struct gm_sock *igmp, struct in_addr from,
  58                         struct in_addr group_addr, int num_sources,
  59                         struct in_addr *sources);
  60 void igmpv3_report_toex(struct gm_sock *igmp, struct in_addr from,
  61                         struct in_addr group_addr, int num_sources,
  62                         struct in_addr *sources);
  63 void igmpv3_report_allow(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_block(struct gm_sock *igmp, struct in_addr from,
  67                          struct in_addr group_addr, int num_sources,
  68                          struct in_addr *sources);
  69
  70 void igmp_group_timer_lower_to_lmqt(struct gm_group *group);
  71 void igmp_source_timer_lower_to_lmqt(struct gm_source *source);
  72
  73 struct gm_source *igmp_find_source_by_addr(struct gm_group *group,
  74                                            struct in_addr src_addr);
  75
  76 void igmp_v3_send_query(struct gm_group *group, int fd, const char *ifname,
  77                         char *query_buf, int query_buf_size, int num_sources,
  78                         struct in_addr dst_addr, struct in_addr group_addr,
  79                         int query_max_response_time_dsec, uint8_t s_flag,
  80                         uint8_t querier_robustness_variable,
  81                         uint16_t querier_query_interval);
  82
  83 void igmp_v3_recv_query(struct gm_sock *igmp, const char *from_str,
  84                         char *igmp_msg);
  85
  86 int igmp_v3_recv_report(struct gm_sock *igmp, struct in_addr from,
  87                         const char *from_str, char *igmp_msg, int igmp_msg_len);
  88
  89 #else /* PIM_IPV != 4 */
  90 static inline void igmp_group_reset_gmi(struct gm_group *group)
  91 {
  92 }
  93
  94
  95 static inline void igmp_source_reset_gmi(struct gm_group *group,
  96                                          struct gm_source *source)
  97 {
  98 }
  99 #endif
 100
 101 #endif /* PIM_IGMPV3_H */