embedaddon/quagga/pimd/pim_igmp.h - view

File: [ELWIX - Embedded LightWeight unIX -] / embedaddon / quagga / pimd / pim_igmp.h
Revision 1.1.1.1 (vendor branch): download - view: text, annotated - select for diffs - revision graph
Wed Nov 2 10:09:11 2016 UTC (7 years, 7 months ago) by misho
Branches: quagga, MAIN
CVS tags: v1_0_20160315, HEAD

quagga 1.0.20160315

/* PIM for Quagga Copyright (C) 2008 Everton da Silva Marques This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; see the file COPYING; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA $QuaggaId: $Format:%an, %ai, %h$ $ */ #ifndef PIM_IGMP_H #define PIM_IGMP_H #include <netinet/in.h> #include <zebra.h> #include "vty.h" #include "linklist.h" /* The following sizes are likely to support any message sent within local MTU. */ #define PIM_IGMP_BUFSIZE_READ (20000) #define PIM_IGMP_BUFSIZE_WRITE (20000) #define PIM_IGMP_MEMBERSHIP_QUERY (0x11) #define PIM_IGMP_V1_MEMBERSHIP_REPORT (0x12) #define PIM_IGMP_V2_MEMBERSHIP_REPORT (0x16) #define PIM_IGMP_V2_LEAVE_GROUP (0x17) #define PIM_IGMP_V3_MEMBERSHIP_REPORT (0x22) #define IGMP_V3_REPORT_HEADER_SIZE (8) #define IGMP_V3_GROUP_RECORD_MIN_SIZE (8) #define IGMP_V3_MSG_MIN_SIZE (IGMP_V3_REPORT_HEADER_SIZE + \ IGMP_V3_GROUP_RECORD_MIN_SIZE) #define IGMP_V12_MSG_SIZE (8) #define IGMP_V3_GROUP_RECORD_TYPE_OFFSET (0) #define IGMP_V3_GROUP_RECORD_AUXDATALEN_OFFSET (1) #define IGMP_V3_GROUP_RECORD_NUMSOURCES_OFFSET (2) #define IGMP_V3_GROUP_RECORD_GROUP_OFFSET (4) #define IGMP_V3_GROUP_RECORD_SOURCE_OFFSET (8) /* RFC 3376: 8.1. Robustness Variable - Default: 2 */ #define IGMP_DEFAULT_ROBUSTNESS_VARIABLE (2) /* RFC 3376: 8.2. Query Interval - Default: 125 seconds */ #define IGMP_GENERAL_QUERY_INTERVAL (125) /* RFC 3376: 8.3. Query Response Interval - Default: 100 deciseconds */ #define IGMP_QUERY_MAX_RESPONSE_TIME_DSEC (100) /* RFC 3376: 8.8. Last Member Query Interval - Default: 10 deciseconds */ #define IGMP_SPECIFIC_QUERY_MAX_RESPONSE_TIME_DSEC (10) struct igmp_join { struct in_addr group_addr; struct in_addr source_addr; int sock_fd; time_t sock_creation; }; struct igmp_sock { int fd; struct interface *interface; struct in_addr ifaddr; time_t sock_creation; struct thread *t_igmp_read; /* read: IGMP sockets */ struct thread *t_igmp_query_timer; /* timer: issue IGMP general queries */ struct thread *t_other_querier_timer; /* timer: other querier present */ int querier_query_interval; /* QQI */ int querier_robustness_variable; /* QRV */ int startup_query_count; struct list *igmp_group_list; /* list of struct igmp_group */ }; struct igmp_sock *pim_igmp_sock_lookup_ifaddr(struct list *igmp_sock_list, struct in_addr ifaddr); struct igmp_sock *igmp_sock_lookup_by_fd(struct list *igmp_sock_list, int fd); struct igmp_sock *pim_igmp_sock_add(struct list *igmp_sock_list, struct in_addr ifaddr, struct interface *ifp); void igmp_sock_delete(struct igmp_sock *igmp); void igmp_sock_free(struct igmp_sock *igmp); int pim_igmp_packet(struct igmp_sock *igmp, char *buf, size_t len); void pim_igmp_general_query_on(struct igmp_sock *igmp); void pim_igmp_general_query_off(struct igmp_sock *igmp); void pim_igmp_other_querier_timer_on(struct igmp_sock *igmp); void pim_igmp_other_querier_timer_off(struct igmp_sock *igmp); #define IGMP_SOURCE_MASK_FORWARDING (1 << 0) #define IGMP_SOURCE_MASK_DELETE (1 << 1) #define IGMP_SOURCE_MASK_SEND (1 << 2) #define IGMP_SOURCE_TEST_FORWARDING(flags) ((flags) & IGMP_SOURCE_MASK_FORWARDING) #define IGMP_SOURCE_TEST_DELETE(flags) ((flags) & IGMP_SOURCE_MASK_DELETE) #define IGMP_SOURCE_TEST_SEND(flags) ((flags) & IGMP_SOURCE_MASK_SEND) #define IGMP_SOURCE_DO_FORWARDING(flags) ((flags) |= IGMP_SOURCE_MASK_FORWARDING) #define IGMP_SOURCE_DO_DELETE(flags) ((flags) |= IGMP_SOURCE_MASK_DELETE) #define IGMP_SOURCE_DO_SEND(flags) ((flags) |= IGMP_SOURCE_MASK_SEND) #define IGMP_SOURCE_DONT_FORWARDING(flags) ((flags) &= ~IGMP_SOURCE_MASK_FORWARDING) #define IGMP_SOURCE_DONT_DELETE(flags) ((flags) &= ~IGMP_SOURCE_MASK_DELETE) #define IGMP_SOURCE_DONT_SEND(flags) ((flags) &= ~IGMP_SOURCE_MASK_SEND) struct igmp_source { struct in_addr source_addr; struct thread *t_source_timer; struct igmp_group *source_group; /* back pointer */ time_t source_creation; uint32_t source_flags; struct channel_oil *source_channel_oil; /* RFC 3376: 6.6.3.2. Building and Sending Group and Source Specific Queries */ int source_query_retransmit_count; }; struct igmp_group { /* RFC 3376: 6.2.2. Definition of Group Timers The group timer is only used when a group is in EXCLUDE mode and it represents the time for the *filter-mode* of the group to expire and switch to INCLUDE mode. */ struct thread *t_group_timer; /* Shared between group-specific and group-and-source-specific retransmissions */ struct thread *t_group_query_retransmit_timer; /* Counter exclusive for group-specific retransmissions (not used by group-and-source-specific retransmissions, since sources have their counters) */ int group_specific_query_retransmit_count; struct in_addr group_addr; int group_filtermode_isexcl; /* 0=INCLUDE, 1=EXCLUDE */ struct list *group_source_list; /* list of struct igmp_source */ time_t group_creation; struct igmp_sock *group_igmp_sock; /* back pointer */ int64_t last_igmp_v1_report_dsec; int64_t last_igmp_v2_report_dsec; }; struct igmp_group *igmp_add_group_by_addr(struct igmp_sock *igmp, struct in_addr group_addr, const char *ifname); void igmp_group_delete_empty_include(struct igmp_group *group); void igmp_startup_mode_on(struct igmp_sock *igmp); void igmp_group_timer_on(struct igmp_group *group, long interval_msec, const char *ifname); #endif /* PIM_IGMP_H */