pimd/pim_igmpv3.h

   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
  16   along with this program; see the file COPYING; if not, write to the
  17   Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
  18   MA 02110-1301 USA
  19 */
  20
  21 #ifndef PIM_IGMPV3_H
  22 #define PIM_IGMPV3_H
  23
  24 #include <zebra.h>
  25 #include "if.h"
  26
  27 #define IGMP_V3_CHECKSUM_OFFSET            (2)
  28 #define IGMP_V3_REPORT_NUMGROUPS_OFFSET    (6)
  29 #define IGMP_V3_REPORT_GROUPPRECORD_OFFSET (8)
  30 #define IGMP_V3_NUMSOURCES_OFFSET          (10)
  31 #define IGMP_V3_SOURCES_OFFSET             (12)
  32
  33 /* GMI: Group Membership Interval */
  34 #define PIM_IGMP_GMI_MSEC(qrv,qqi,qri_dsec) ((qrv) * (1000 * (qqi)) + 100 * (qri_dsec))
  35
  36 /* OQPI: Other Querier Present Interval */
  37 #define PIM_IGMP_OQPI_MSEC(qrv,qqi,qri_dsec) ((qrv) * (1000 * (qqi)) + 100 * ((qri_dsec) >> 1))
  38
  39 /* SQI: Startup Query Interval */
  40 #define PIM_IGMP_SQI(qi) (((qi) < 4) ? 1 : ((qi) >> 2))
  41
  42 /* LMQT: Last Member Query Time */
  43 #define PIM_IGMP_LMQT_MSEC(lmqi_dsec, lmqc) ((lmqc) * (100 * (lmqi_dsec)))
  44
  45 /* OHPI: Older Host Present Interval */
  46 #define PIM_IGMP_OHPI_DSEC(qrv,qqi,qri_dsec) ((qrv) * (10 * (qqi)) + (qri_dsec))
  47
  48 void igmp_group_reset_gmi(struct igmp_group *group);
  49 void igmp_source_reset_gmi(struct igmp_sock *igmp,
  50                            struct igmp_group *group,
  51                            struct igmp_source *source);
  52
  53 void igmp_source_free(struct igmp_source *source);
  54 void igmp_source_delete(struct igmp_source *source);
  55 void igmp_source_delete_expired(struct list *source_list);
  56
  57 int igmp_group_compat_mode(const struct igmp_sock *igmp,
  58                            const struct igmp_group *group);
  59
  60 void igmpv3_report_isin(struct igmp_sock *igmp, struct in_addr from,
  61                         struct in_addr group_addr,
  62                         int num_sources, struct in_addr *sources);
  63 void igmpv3_report_isex(struct igmp_sock *igmp, struct in_addr from,
  64                         struct in_addr group_addr,
  65                         int num_sources, struct in_addr *sources);
  66 void igmpv3_report_toin(struct igmp_sock *igmp, struct in_addr from,
  67                         struct in_addr group_addr,
  68                         int num_sources, struct in_addr *sources);
  69 void igmpv3_report_toex(struct igmp_sock *igmp, struct in_addr from,
  70                         struct in_addr group_addr,
  71                         int num_sources, struct in_addr *sources);
  72 void igmpv3_report_allow(struct igmp_sock *igmp, struct in_addr from,
  73                          struct in_addr group_addr,
  74                          int num_sources, struct in_addr *sources);
  75 void igmpv3_report_block(struct igmp_sock *igmp, struct in_addr from,
  76                          struct in_addr group_addr,
  77                          int num_sources, struct in_addr *sources);
  78
  79 void igmp_group_timer_lower_to_lmqt(struct igmp_group *group);
  80 void igmp_source_timer_lower_to_lmqt(struct igmp_source *source);
  81
  82 struct igmp_source *igmp_find_source_by_addr(struct igmp_group *group,
  83                                              struct in_addr src_addr);
  84
  85 void pim_igmp_send_membership_query(struct igmp_group *group,
  86                                     int fd,
  87                                     const char *ifname,
  88                                     char *query_buf,
  89                                     int query_buf_size,
  90                                     int num_sources,
  91                                     struct in_addr dst_addr,
  92                                     struct in_addr group_addr,
  93                                     int query_max_response_time_dsec,
  94                                     uint8_t s_flag,
  95                                     uint8_t querier_robustness_variable,
  96                                     uint16_t querier_query_interval);
  97
  98 #endif /* PIM_IGMPV3_H */