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Command showing IGMP Rx statistics, useful for analyzing IGMP activity on interfaces. Signed-off-by: Mladen Sablic <mladen.sablic@gmail.com>
201 lines
7.0 KiB
C
201 lines
7.0 KiB
C
/*
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* PIM for Quagga
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* Copyright (C) 2008 Everton da Silva Marques
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; see the file COPYING; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef PIM_IGMP_H
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#define PIM_IGMP_H
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#include <netinet/in.h>
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#include <zebra.h>
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#include "vty.h"
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#include "linklist.h"
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#include "pim_igmp_stats.h"
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/*
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The following sizes are likely to support
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any message sent within local MTU.
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*/
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#define PIM_IGMP_BUFSIZE_READ (20000)
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#define PIM_IGMP_BUFSIZE_WRITE (20000)
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#define PIM_IGMP_MEMBERSHIP_QUERY (0x11)
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#define PIM_IGMP_V1_MEMBERSHIP_REPORT (0x12)
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#define PIM_IGMP_V2_MEMBERSHIP_REPORT (0x16)
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#define PIM_IGMP_V2_LEAVE_GROUP (0x17)
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#define PIM_IGMP_MTRACE_RESPONSE (0x1E)
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#define PIM_IGMP_MTRACE_QUERY_REQUEST (0x1F)
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#define PIM_IGMP_V3_MEMBERSHIP_REPORT (0x22)
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#define IGMP_V3_REPORT_HEADER_SIZE (8)
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#define IGMP_V3_GROUP_RECORD_MIN_SIZE (8)
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#define IGMP_V3_MSG_MIN_SIZE \
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(IGMP_V3_REPORT_HEADER_SIZE + IGMP_V3_GROUP_RECORD_MIN_SIZE)
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#define IGMP_V12_MSG_SIZE (8)
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#define IGMP_V3_GROUP_RECORD_TYPE_OFFSET (0)
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#define IGMP_V3_GROUP_RECORD_AUXDATALEN_OFFSET (1)
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#define IGMP_V3_GROUP_RECORD_NUMSOURCES_OFFSET (2)
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#define IGMP_V3_GROUP_RECORD_GROUP_OFFSET (4)
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#define IGMP_V3_GROUP_RECORD_SOURCE_OFFSET (8)
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#define IGMP_CHECKSUM_OFFSET (2)
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/* RFC 3376: 8.1. Robustness Variable - Default: 2 */
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#define IGMP_DEFAULT_ROBUSTNESS_VARIABLE (2)
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/* RFC 3376: 8.2. Query Interval - Default: 125 seconds */
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#define IGMP_GENERAL_QUERY_INTERVAL (125)
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/* RFC 3376: 8.3. Query Response Interval - Default: 100 deciseconds */
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#define IGMP_QUERY_MAX_RESPONSE_TIME_DSEC (100)
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/* RFC 3376: 8.8. Last Member Query Interval - Default: 10 deciseconds */
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#define IGMP_SPECIFIC_QUERY_MAX_RESPONSE_TIME_DSEC (10)
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#define IGMP_DEFAULT_VERSION (3)
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struct igmp_join {
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struct in_addr group_addr;
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struct in_addr source_addr;
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int sock_fd;
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time_t sock_creation;
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};
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struct igmp_sock {
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int fd;
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struct interface *interface;
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struct in_addr ifaddr;
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time_t sock_creation;
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struct thread *t_igmp_read; /* read: IGMP sockets */
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struct thread
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*t_igmp_query_timer; /* timer: issue IGMP general queries */
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struct thread *t_other_querier_timer; /* timer: other querier present */
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int querier_query_interval; /* QQI */
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int querier_robustness_variable; /* QRV */
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int startup_query_count;
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bool mtrace_only;
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struct list *igmp_group_list; /* list of struct igmp_group */
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struct hash *igmp_group_hash;
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struct igmp_stats rx_stats;
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};
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struct igmp_sock *pim_igmp_sock_lookup_ifaddr(struct list *igmp_sock_list,
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struct in_addr ifaddr);
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struct igmp_sock *igmp_sock_lookup_by_fd(struct list *igmp_sock_list, int fd);
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struct igmp_sock *pim_igmp_sock_add(struct list *igmp_sock_list,
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struct in_addr ifaddr,
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struct interface *ifp,
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bool mtrace_only);
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void igmp_sock_delete(struct igmp_sock *igmp);
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void igmp_sock_free(struct igmp_sock *igmp);
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void igmp_sock_delete_all(struct interface *ifp);
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int pim_igmp_packet(struct igmp_sock *igmp, char *buf, size_t len);
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void pim_igmp_general_query_on(struct igmp_sock *igmp);
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void pim_igmp_general_query_off(struct igmp_sock *igmp);
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void pim_igmp_other_querier_timer_on(struct igmp_sock *igmp);
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void pim_igmp_other_querier_timer_off(struct igmp_sock *igmp);
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#define IGMP_SOURCE_MASK_FORWARDING (1 << 0)
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#define IGMP_SOURCE_MASK_DELETE (1 << 1)
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#define IGMP_SOURCE_MASK_SEND (1 << 2)
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#define IGMP_SOURCE_TEST_FORWARDING(flags) ((flags) & IGMP_SOURCE_MASK_FORWARDING)
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#define IGMP_SOURCE_TEST_DELETE(flags) ((flags) & IGMP_SOURCE_MASK_DELETE)
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#define IGMP_SOURCE_TEST_SEND(flags) ((flags) & IGMP_SOURCE_MASK_SEND)
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#define IGMP_SOURCE_DO_FORWARDING(flags) ((flags) |= IGMP_SOURCE_MASK_FORWARDING)
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#define IGMP_SOURCE_DO_DELETE(flags) ((flags) |= IGMP_SOURCE_MASK_DELETE)
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#define IGMP_SOURCE_DO_SEND(flags) ((flags) |= IGMP_SOURCE_MASK_SEND)
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#define IGMP_SOURCE_DONT_FORWARDING(flags) ((flags) &= ~IGMP_SOURCE_MASK_FORWARDING)
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#define IGMP_SOURCE_DONT_DELETE(flags) ((flags) &= ~IGMP_SOURCE_MASK_DELETE)
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#define IGMP_SOURCE_DONT_SEND(flags) ((flags) &= ~IGMP_SOURCE_MASK_SEND)
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struct igmp_source {
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struct in_addr source_addr;
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struct thread *t_source_timer;
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struct igmp_group *source_group; /* back pointer */
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time_t source_creation;
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uint32_t source_flags;
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struct channel_oil *source_channel_oil;
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/*
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RFC 3376: 6.6.3.2. Building and Sending Group and Source Specific
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Queries
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*/
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int source_query_retransmit_count;
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};
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struct igmp_group {
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/*
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RFC 3376: 6.2.2. Definition of Group Timers
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The group timer is only used when a group is in EXCLUDE mode and it
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represents the time for the *filter-mode* of the group to expire and
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switch to INCLUDE mode.
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*/
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struct thread *t_group_timer;
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/* Shared between group-specific and
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group-and-source-specific retransmissions */
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struct thread *t_group_query_retransmit_timer;
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/* Counter exclusive for group-specific retransmissions
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(not used by group-and-source-specific retransmissions,
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since sources have their counters) */
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int group_specific_query_retransmit_count;
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/* compatibility mode - igmp v1, v2 or v3 */
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int igmp_version;
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struct in_addr group_addr;
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int group_filtermode_isexcl; /* 0=INCLUDE, 1=EXCLUDE */
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struct list *group_source_list; /* list of struct igmp_source */
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time_t group_creation;
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struct igmp_sock *group_igmp_sock; /* back pointer */
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int64_t last_igmp_v1_report_dsec;
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int64_t last_igmp_v2_report_dsec;
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};
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struct igmp_group *find_group_by_addr(struct igmp_sock *igmp,
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struct in_addr group_addr);
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struct igmp_group *igmp_add_group_by_addr(struct igmp_sock *igmp,
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struct in_addr group_addr);
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void igmp_group_delete_empty_include(struct igmp_group *group);
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void igmp_startup_mode_on(struct igmp_sock *igmp);
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void igmp_group_timer_on(struct igmp_group *group, long interval_msec,
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const char *ifname);
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struct igmp_source *source_new(struct igmp_group *group,
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struct in_addr src_addr);
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void igmp_send_query(int igmp_version, struct igmp_group *group, int fd,
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const char *ifname, char *query_buf, int query_buf_size,
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int num_sources, struct in_addr dst_addr,
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struct in_addr group_addr,
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int query_max_response_time_dsec, uint8_t s_flag,
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uint8_t querier_robustness_variable,
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uint16_t querier_query_interval);
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#endif /* PIM_IGMP_H */
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