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 #define IGMP_GRP_REC_TYPE_MODE_IS_INCLUDE        (1)
  34 #define IGMP_GRP_REC_TYPE_MODE_IS_EXCLUDE        (2)
  35 #define IGMP_GRP_REC_TYPE_CHANGE_TO_INCLUDE_MODE (3)
  36 #define IGMP_GRP_REC_TYPE_CHANGE_TO_EXCLUDE_MODE (4)
  37 #define IGMP_GRP_REC_TYPE_ALLOW_NEW_SOURCES      (5)
  38 #define IGMP_GRP_REC_TYPE_BLOCK_OLD_SOURCES      (6)
  39
  40 /* GMI: Group Membership Interval */
  41 #define PIM_IGMP_GMI_MSEC(qrv,qqi,qri_dsec) ((qrv) * (1000 * (qqi)) + 100 * (qri_dsec))
  42
  43 /* OQPI: Other Querier Present Interval */
  44 #define PIM_IGMP_OQPI_MSEC(qrv,qqi,qri_dsec) ((qrv) * (1000 * (qqi)) + 100 * ((qri_dsec) >> 1))
  45
  46 /* SQI: Startup Query Interval */
  47 #define PIM_IGMP_SQI(qi) (((qi) < 4) ? 1 : ((qi) >> 2))
  48
  49 /* LMQT: Last Member Query Time */
  50 #define PIM_IGMP_LMQT_MSEC(lmqi_dsec, lmqc) ((lmqc) * (100 * (lmqi_dsec)))
  51
  52 /* OHPI: Older Host Present Interval */
  53 #define PIM_IGMP_OHPI_DSEC(qrv,qqi,qri_dsec) ((qrv) * (10 * (qqi)) + (qri_dsec))
  54
  55 void igmp_group_reset_gmi(struct igmp_group *group);
  56 void igmp_source_reset_gmi(struct igmp_sock *igmp, struct igmp_group *group,
  57                            struct igmp_source *source);
  58
  59 void igmp_source_free(struct igmp_source *source);
  60 void igmp_source_delete(struct igmp_source *source);
  61 void igmp_source_delete_expired(struct list *source_list);
  62
  63 void igmpv3_report_isin(struct igmp_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 igmp_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 igmp_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 igmp_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 igmp_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 igmp_sock *igmp, struct in_addr from,
  79                          struct in_addr group_addr, int num_sources,
  80                          struct in_addr *sources);
  81
  82 void igmp_group_timer_lower_to_lmqt(struct igmp_group *group);
  83 void igmp_source_timer_lower_to_lmqt(struct igmp_source *source);
  84
  85 struct igmp_source *igmp_find_source_by_addr(struct igmp_group *group,
  86                                              struct in_addr src_addr);
  87
  88 void igmp_v3_send_query(struct igmp_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);
  94
  95 void igmp_v3_recv_query(struct igmp_sock *igmp, const char *from_str,
  96                         char *igmp_msg);
  97
  98 int igmp_v3_recv_report(struct igmp_sock *igmp, struct in_addr from,
  99                         const char *from_str, char *igmp_msg, int igmp_msg_len);
 100
 101 #endif /* PIM_IGMPV3_H */