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 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 #include "pim_igmp.h"
  27
  28 #define IGMP_V3_CHECKSUM_OFFSET            (2)
  29 #define IGMP_V3_REPORT_NUMGROUPS_OFFSET    (6)
  30 #define IGMP_V3_REPORT_GROUPPRECORD_OFFSET (8)
  31 #define IGMP_V3_NUMSOURCES_OFFSET          (10)
  32 #define IGMP_V3_SOURCES_OFFSET             (12)
  33
  34 #define IGMP_GRP_REC_TYPE_MODE_IS_INCLUDE        (1)
  35 #define IGMP_GRP_REC_TYPE_MODE_IS_EXCLUDE        (2)
  36 #define IGMP_GRP_REC_TYPE_CHANGE_TO_INCLUDE_MODE (3)
  37 #define IGMP_GRP_REC_TYPE_CHANGE_TO_EXCLUDE_MODE (4)
  38 #define IGMP_GRP_REC_TYPE_ALLOW_NEW_SOURCES      (5)
  39 #define IGMP_GRP_REC_TYPE_BLOCK_OLD_SOURCES      (6)
  40
  41 /* GMI: Group Membership Interval */
  42 #define PIM_IGMP_GMI_MSEC(qrv,qqi,qri_dsec) ((qrv) * (1000 * (qqi)) + 100 * (qri_dsec))
  43
  44 /* OQPI: Other Querier Present Interval */
  45 #define PIM_IGMP_OQPI_MSEC(qrv,qqi,qri_dsec) ((qrv) * (1000 * (qqi)) + 100 * ((qri_dsec) >> 1))
  46
  47 /* SQI: Startup Query Interval */
  48 #define PIM_IGMP_SQI(qi) (((qi) < 4) ? 1 : ((qi) >> 2))
  49
  50 /* LMQT: Last Member Query Time */
  51 #define PIM_IGMP_LMQT_MSEC(lmqi_dsec, lmqc) ((lmqc) * (100 * (lmqi_dsec)))
  52
  53 /* OHPI: Older Host Present Interval */
  54 #define PIM_IGMP_OHPI_DSEC(qrv,qqi,qri_dsec) ((qrv) * (10 * (qqi)) + (qri_dsec))
  55
  56 #if PIM_IPV == 4
  57 void igmp_group_reset_gmi(struct gm_group *group);
  58 void igmp_source_reset_gmi(struct gm_group *group, struct gm_source *source);
  59
  60 void igmp_source_free(struct gm_source *source);
  61 void igmp_source_delete(struct gm_source *source);
  62 void igmp_source_delete_expired(struct list *source_list);
  63
  64 void igmpv3_report_isin(struct gm_sock *igmp, struct in_addr from,
  65                         struct in_addr group_addr, int num_sources,
  66                         struct in_addr *sources);
  67 void igmpv3_report_isex(struct gm_sock *igmp, struct in_addr from,
  68                         struct in_addr group_addr, int num_sources,
  69                         struct in_addr *sources, int from_igmp_v2_report);
  70 void igmpv3_report_toin(struct gm_sock *igmp, struct in_addr from,
  71                         struct in_addr group_addr, int num_sources,
  72                         struct in_addr *sources);
  73 void igmpv3_report_toex(struct gm_sock *igmp, struct in_addr from,
  74                         struct in_addr group_addr, int num_sources,
  75                         struct in_addr *sources);
  76 void igmpv3_report_allow(struct gm_sock *igmp, struct in_addr from,
  77                          struct in_addr group_addr, int num_sources,
  78                          struct in_addr *sources);
  79 void igmpv3_report_block(struct gm_sock *igmp, struct in_addr from,
  80                          struct in_addr group_addr, int num_sources,
  81                          struct in_addr *sources);
  82
  83 void igmp_group_timer_lower_to_lmqt(struct gm_group *group);
  84 void igmp_source_timer_lower_to_lmqt(struct gm_source *source);
  85
  86 struct gm_source *igmp_find_source_by_addr(struct gm_group *group,
  87                                            struct in_addr src_addr);
  88
  89 void igmp_v3_send_query(struct gm_group *group, int fd, const char *ifname,
  90                         char *query_buf, int query_buf_size, int num_sources,
  91                         struct in_addr dst_addr, struct in_addr group_addr,
  92                         int query_max_response_time_dsec, uint8_t s_flag,
  93                         uint8_t querier_robustness_variable,
  94                         uint16_t querier_query_interval);
  95
  96 void igmp_v3_recv_query(struct gm_sock *igmp, const char *from_str,
  97                         char *igmp_msg);
  98
  99 int igmp_v3_recv_report(struct gm_sock *igmp, struct in_addr from,
 100                         const char *from_str, char *igmp_msg, int igmp_msg_len);
 101
 102 #else /* PIM_IPV != 4 */
 103 static inline void igmp_group_reset_gmi(struct gm_group *group)
 104 {
 105 }
 106
 107
 108 static inline void igmp_source_reset_gmi(struct gm_group *group,
 109                                          struct gm_source *source)
 110 {
 111 }
 112 #endif
 113
 114 #endif /* PIM_IGMPV3_H */