mirror of
https://git.proxmox.com/git/mirror_frr
synced 2025-11-04 11:45:06 +00:00
199 lines
7.3 KiB
C
199 lines
7.3 KiB
C
/*
|
|
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
|
|
*/
|
|
|
|
#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)
|
|
#define IGMP_CHECKSUM_OFFSET (2)
|
|
|
|
/* 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)
|
|
|
|
#define IGMP_DEFAULT_VERSION (3)
|
|
|
|
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);
|
|
void igmp_sock_delete_all (struct interface *ifp);
|
|
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;
|
|
|
|
/* compatibility mode - igmp v1, v2 or v3 */
|
|
int igmp_version;
|
|
|
|
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 *find_group_by_addr (struct igmp_sock *igmp,
|
|
struct in_addr group_addr);
|
|
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);
|
|
|
|
void igmp_send_query(int igmp_version,
|
|
struct igmp_group *group,
|
|
int fd,
|
|
const char *ifname,
|
|
char *query_buf,
|
|
int query_buf_size,
|
|
int num_sources,
|
|
struct in_addr dst_addr,
|
|
struct in_addr group_addr,
|
|
int query_max_response_time_dsec,
|
|
uint8_t s_flag,
|
|
uint8_t querier_robustness_variable,
|
|
uint16_t querier_query_interval);
|
|
#endif /* PIM_IGMP_H */
|