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e6685141aa
Effectively a massive search and replace of `struct thread` to `struct event`. Using the term `thread` gives people the thought that this event system is a pthread when it is not Signed-off-by: Donald Sharp <sharpd@nvidia.com>
234 lines
7.4 KiB
C
234 lines
7.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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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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#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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#include "pim_str.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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#define IGMP_DEFAULT_VERSION (3)
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#define IGMP_GET_INT16(ptr, output) \
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do { \
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output = *(ptr) << 8; \
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output |= *((ptr) + 1); \
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} while (0)
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struct gm_join {
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pim_addr group_addr;
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pim_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 gm_sock {
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int fd;
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struct interface *interface;
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pim_addr ifaddr;
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time_t sock_creation;
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struct event *t_igmp_read; /* read: IGMP sockets */
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/* timer: issue IGMP general queries */
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struct event *t_igmp_query_timer;
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struct event *t_other_querier_timer; /* timer: other querier present */
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pim_addr querier_addr; /* IP address of the querier */
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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 igmp_stats igmp_stats;
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};
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struct pim_interface;
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#if PIM_IPV == 4
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void pim_igmp_if_init(struct pim_interface *pim_ifp, struct interface *ifp);
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void pim_igmp_if_reset(struct pim_interface *pim_ifp);
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void pim_igmp_if_fini(struct pim_interface *pim_ifp);
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struct gm_sock *pim_igmp_sock_lookup_ifaddr(struct list *igmp_sock_list,
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struct in_addr ifaddr);
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struct gm_sock *pim_igmp_sock_add(struct list *igmp_sock_list,
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struct in_addr ifaddr, struct interface *ifp,
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bool mtrace_only);
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void igmp_sock_delete(struct gm_sock *igmp);
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void igmp_sock_free(struct gm_sock *igmp);
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void igmp_sock_delete_all(struct interface *ifp);
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int pim_igmp_packet(struct gm_sock *igmp, char *buf, size_t len);
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bool pim_igmp_verify_header(struct ip *ip_hdr, size_t len, size_t *ip_hlen);
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void pim_igmp_general_query_on(struct gm_sock *igmp);
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void pim_igmp_general_query_off(struct gm_sock *igmp);
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void pim_igmp_other_querier_timer_on(struct gm_sock *igmp);
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void pim_igmp_other_querier_timer_off(struct gm_sock *igmp);
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int igmp_validate_checksum(char *igmp_msg, int igmp_msg_len);
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#else /* PIM_IPV != 4 */
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static inline void pim_igmp_if_init(struct pim_interface *pim_ifp,
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struct interface *ifp)
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{
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}
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static inline void pim_igmp_if_fini(struct pim_interface *pim_ifp)
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{
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}
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static inline void pim_igmp_general_query_on(struct gm_sock *igmp)
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{
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}
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static inline void pim_igmp_general_query_off(struct gm_sock *igmp)
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{
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}
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static inline void pim_igmp_other_querier_timer_on(struct gm_sock *igmp)
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{
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}
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static inline void pim_igmp_other_querier_timer_off(struct gm_sock *igmp)
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{
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}
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#endif /* PIM_IPV == 4 */
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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 gm_source {
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pim_addr source_addr;
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struct event *t_source_timer;
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struct gm_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 gm_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 event *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 event *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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pim_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 gm_source */
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time_t group_creation;
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struct interface *interface;
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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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#if PIM_IPV == 4
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struct pim_instance;
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void igmp_anysource_forward_start(struct pim_instance *pim,
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struct gm_group *group);
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void igmp_anysource_forward_stop(struct gm_group *group);
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void igmp_source_forward_start(struct pim_instance *pim,
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struct gm_source *source);
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void igmp_source_forward_stop(struct gm_source *source);
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void igmp_source_forward_reevaluate_all(struct pim_instance *pim);
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struct gm_group *find_group_by_addr(struct gm_sock *igmp,
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struct in_addr group_addr);
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struct gm_group *igmp_add_group_by_addr(struct gm_sock *igmp,
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struct in_addr group_addr);
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struct gm_source *igmp_get_source_by_addr(struct gm_group *group,
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struct in_addr src_addr,
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bool *created);
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void igmp_group_delete_empty_include(struct gm_group *group);
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void igmp_startup_mode_on(struct gm_sock *igmp);
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void igmp_group_timer_on(struct gm_group *group, long interval_msec,
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const char *ifname);
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void igmp_send_query(int igmp_version, struct gm_group *group, char *query_buf,
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int query_buf_size, int num_sources,
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struct in_addr dst_addr, struct in_addr group_addr,
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int query_max_response_time_dsec, uint8_t s_flag,
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struct gm_sock *igmp);
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void igmp_group_delete(struct gm_group *group);
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void igmp_send_query_on_intf(struct interface *ifp, int igmp_ver);
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#else /* PIM_IPV != 4 */
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static inline void igmp_startup_mode_on(struct gm_sock *igmp)
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{
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}
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#endif /* PIM_IPV != 4 */
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#endif /* PIM_IGMP_H */
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