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- /*
- 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);
- 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);
- struct igmp_source *
- source_new (struct igmp_group *group,
- struct in_addr src_addr);
- #endif /* PIM_IGMP_H */
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