forked from Mirror/frr
4bf3dda597
when ever a FRR Client wants to send any data to another node using MLAG Channel, uses below mechanisam. 1. sends a MLAG Registration to zebra with interested messages that it is intended to receive from peer. 2. In response to this request, Zebra opens communication channel with MLAG. and also in Rx. diretion zebra forwards only those messages which client shown interest during registration 3. when client is no-longer interested in communicating with MLAG, client posts De-register to Zebra 4. if this is the last client which is interested for MLAG Communication, zebra closes the channel. why PIM Needs MLAG Communication ================================ 1. In general on LAN Networks elecetd DR will send the Join towards Multicast RP in case of a LHR and Register in case of FHR. 2. But in case DR Goes down, traffic will be re-converged only after the New DR is elected, but this can take time based on Hold Timer to detect the DR down. 3. this can be optimised by using MLAG Mecganisam. 4. and also Traffic can be forwarded more efficiently by knowing the cost towards RP using MLAG Signed-off-by: Satheesh Kumar K <sathk@cumulusnetworks.com>
167 lines
3.7 KiB
C
167 lines
3.7 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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#include <zebra.h>
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#include "log.h"
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#include "privs.h"
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#include "version.h"
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#include <getopt.h>
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#include "command.h"
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#include "thread.h"
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#include <signal.h>
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#include "memory.h"
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#include "vrf.h"
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#include "memory_vty.h"
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#include "filter.h"
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#include "vty.h"
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#include "sigevent.h"
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#include "version.h"
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#include "prefix.h"
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#include "plist.h"
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#include "vrf.h"
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#include "libfrr.h"
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#include "pimd.h"
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#include "pim_instance.h"
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#include "pim_version.h"
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#include "pim_signals.h"
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#include "pim_zebra.h"
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#include "pim_msdp.h"
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#include "pim_iface.h"
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#include "pim_bfd.h"
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#include "pim_mlag.h"
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#include "pim_errors.h"
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extern struct host host;
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struct option longopts[] = {{0}};
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/* pimd privileges */
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zebra_capabilities_t _caps_p[] = {
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ZCAP_NET_ADMIN, ZCAP_SYS_ADMIN, ZCAP_NET_RAW, ZCAP_BIND,
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};
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/* pimd privileges to run with */
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struct zebra_privs_t pimd_privs = {
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#if defined(FRR_USER) && defined(FRR_GROUP)
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.user = FRR_USER,
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.group = FRR_GROUP,
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#endif
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#ifdef VTY_GROUP
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.vty_group = VTY_GROUP,
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#endif
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.caps_p = _caps_p,
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.cap_num_p = array_size(_caps_p),
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.cap_num_i = 0};
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static const struct frr_yang_module_info *pimd_yang_modules[] = {
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&frr_interface_info,
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};
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FRR_DAEMON_INFO(pimd, PIM, .vty_port = PIMD_VTY_PORT,
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.proghelp = "Implementation of the PIM routing protocol.",
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.signals = pimd_signals,
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.n_signals = 4 /* XXX array_size(pimd_signals) XXX*/,
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.privs = &pimd_privs, .yang_modules = pimd_yang_modules,
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.n_yang_modules = array_size(pimd_yang_modules), )
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int main(int argc, char **argv, char **envp)
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{
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frr_preinit(&pimd_di, argc, argv);
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frr_opt_add("", longopts, "");
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/* this while just reads the options */
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while (1) {
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int opt;
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opt = frr_getopt(argc, argv, NULL);
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if (opt == EOF)
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break;
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switch (opt) {
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case 0:
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break;
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default:
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frr_help_exit(1);
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break;
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}
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}
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pim_router_init();
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/*
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* Initializations
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*/
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pim_error_init();
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pim_vrf_init();
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access_list_init();
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prefix_list_init();
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prefix_list_add_hook(pim_prefix_list_update);
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prefix_list_delete_hook(pim_prefix_list_update);
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pim_route_map_init();
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pim_init();
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/*
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* Initialize zclient "update" and "lookup" sockets
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*/
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pim_zebra_init();
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pim_bfd_init();
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pim_mlag_init();
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frr_config_fork();
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#ifdef PIM_DEBUG_BYDEFAULT
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zlog_notice("PIM_DEBUG_BYDEFAULT: Enabling all debug commands");
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PIM_DO_DEBUG_PIM_EVENTS;
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PIM_DO_DEBUG_PIM_PACKETS;
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PIM_DO_DEBUG_PIM_TRACE;
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PIM_DO_DEBUG_IGMP_EVENTS;
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PIM_DO_DEBUG_IGMP_PACKETS;
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PIM_DO_DEBUG_IGMP_TRACE;
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PIM_DO_DEBUG_ZEBRA;
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#endif
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#ifdef PIM_CHECK_RECV_IFINDEX_SANITY
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zlog_notice(
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"PIM_CHECK_RECV_IFINDEX_SANITY: will match sock/recv ifindex");
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#ifdef PIM_REPORT_RECV_IFINDEX_MISMATCH
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zlog_notice(
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"PIM_REPORT_RECV_IFINDEX_MISMATCH: will report sock/recv ifindex mismatch");
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#endif
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#endif
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#ifdef PIM_UNEXPECTED_KERNEL_UPCALL
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zlog_notice(
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"PIM_UNEXPECTED_KERNEL_UPCALL: report unexpected kernel upcall");
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#endif
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frr_run(router->master);
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/* never reached */
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return 0;
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}
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