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2a28f7a0b9
Add a list structure to track the ifchannels associated with a particular upstream. We are not doing anything with this particular knowledge yet but it will be come useful in the near future. Ticket: CM-15629 Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
209 lines
9.0 KiB
C
209 lines
9.0 KiB
C
/*
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PIM for Quagga
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Copyright (C) 2008 Everton da Silva Marques
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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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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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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING; if not, write to the
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Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
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MA 02110-1301 USA
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*/
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#ifndef PIM_UPSTREAM_H
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#define PIM_UPSTREAM_H
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#include <zebra.h>
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#include <prefix.h>
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#include <pimd/pim_rpf.h>
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#define PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED (1 << 0)
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#define PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED_UPDATED (1 << 1)
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#define PIM_UPSTREAM_FLAG_MASK_FHR (1 << 2)
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#define PIM_UPSTREAM_FLAG_MASK_SRC_IGMP (1 << 3)
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#define PIM_UPSTREAM_FLAG_MASK_SRC_PIM (1 << 4)
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#define PIM_UPSTREAM_FLAG_MASK_SRC_STREAM (1 << 5)
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#define PIM_UPSTREAM_FLAG_MASK_SRC_MSDP (1 << 6)
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#define PIM_UPSTREAM_FLAG_MASK_SEND_SG_RPT_PRUNE (1 << 7)
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#define PIM_UPSTREAM_FLAG_MASK_SRC_LHR (1 << 8)
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#define PIM_UPSTREAM_FLAG_ALL 0xFFFFFFFF
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#define PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED)
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#define PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED_UPDATED(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED_UPDATED)
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#define PIM_UPSTREAM_FLAG_TEST_FHR(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_FHR)
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#define PIM_UPSTREAM_FLAG_TEST_SRC_IGMP(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_SRC_IGMP)
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#define PIM_UPSTREAM_FLAG_TEST_SRC_PIM(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_SRC_PIM)
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#define PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_SRC_STREAM)
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#define PIM_UPSTREAM_FLAG_TEST_SRC_MSDP(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_SRC_MSDP)
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#define PIM_UPSTREAM_FLAG_TEST_SEND_SG_RPT_PRUNE(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_SEND_SG_RPT_PRUNE)
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#define PIM_UPSTREAM_FLAG_TEST_SRC_LHR(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_SRC_LHR)
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#define PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED)
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#define PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED_UPDATED(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED_UPDATED)
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#define PIM_UPSTREAM_FLAG_SET_FHR(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_FHR)
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#define PIM_UPSTREAM_FLAG_SET_SRC_IGMP(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_SRC_IGMP)
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#define PIM_UPSTREAM_FLAG_SET_SRC_PIM(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_SRC_PIM)
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#define PIM_UPSTREAM_FLAG_SET_SRC_STREAM(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_SRC_STREAM)
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#define PIM_UPSTREAM_FLAG_SET_SRC_MSDP(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_SRC_MSDP)
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#define PIM_UPSTREAM_FLAG_SET_SEND_SG_RPT_PRUNE(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_SEND_SG_RPT_PRUNE)
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#define PIM_UPSTREAM_FLAG_SET_SRC_LHR(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_SRC_LHR)
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#define PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED)
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#define PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED_UPDATED(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED_UPDATED)
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#define PIM_UPSTREAM_FLAG_UNSET_FHR(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_FHR)
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#define PIM_UPSTREAM_FLAG_UNSET_SRC_IGMP(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_SRC_IGMP)
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#define PIM_UPSTREAM_FLAG_UNSET_SRC_PIM(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_SRC_PIM)
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#define PIM_UPSTREAM_FLAG_UNSET_SRC_STREAM(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_SRC_STREAM)
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#define PIM_UPSTREAM_FLAG_UNSET_SRC_MSDP(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_SRC_MSDP)
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#define PIM_UPSTREAM_FLAG_UNSET_SEND_SG_RPT_PRUNE(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_SEND_SG_RPT_PRUNE)
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#define PIM_UPSTREAM_FLAG_UNSET_SRC_LHR(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_SRC_LHR)
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enum pim_upstream_state {
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PIM_UPSTREAM_NOTJOINED,
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PIM_UPSTREAM_JOINED,
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};
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enum pim_reg_state {
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PIM_REG_NOINFO,
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PIM_REG_JOIN,
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PIM_REG_JOIN_PENDING,
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PIM_REG_PRUNE,
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};
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enum pim_upstream_sptbit {
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PIM_UPSTREAM_SPTBIT_FALSE,
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PIM_UPSTREAM_SPTBIT_TRUE
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};
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/*
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Upstream (S,G) channel in Joined state
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(S,G) in the "Not Joined" state is not represented
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See RFC 4601: 4.5.7. Sending (S,G) Join/Prune Message
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*/
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struct pim_upstream {
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struct pim_upstream *parent;
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struct in_addr upstream_addr;/* Who we are talking to */
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struct in_addr upstream_register; /*Who we received a register from*/
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struct prefix_sg sg; /* (S,G) group key */
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char sg_str[PIM_SG_LEN];
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uint32_t flags;
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struct channel_oil *channel_oil;
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struct list *sources;
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struct list *ifchannels;
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enum pim_upstream_state join_state;
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enum pim_reg_state reg_state;
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enum pim_upstream_sptbit sptbit;
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int ref_count;
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struct pim_rpf rpf;
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struct thread *t_join_timer;
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/*
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* RST(S,G)
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*/
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struct thread *t_rs_timer;
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#define PIM_REGISTER_SUPPRESSION_PERIOD (60)
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#define PIM_REGISTER_PROBE_PERIOD (15)
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/*
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* KAT(S,G)
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*/
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struct thread *t_ka_timer;
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#define PIM_KEEPALIVE_PERIOD (210)
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#define PIM_RP_KEEPALIVE_PERIOD ( 3 * qpim_register_suppress_time + qpim_register_probe_time )
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/* on the RP we restart a timer to indicate if registers are being rxed for
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* SG. This is needed by MSDP to determine its local SA cache */
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struct thread *t_msdp_reg_timer;
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#define PIM_MSDP_REG_RXED_PERIOD (3 * (1.5 * qpim_register_suppress_time))
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int64_t state_transition; /* Record current state uptime */
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};
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struct list *pim_upstream_list;
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struct hash *pim_upstream_hash;
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void pim_upstream_free(struct pim_upstream *up);
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struct pim_upstream *pim_upstream_find (struct prefix_sg *sg);
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struct pim_upstream *pim_upstream_find_or_add (struct prefix_sg *sg,
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struct interface *ifp, int flags,
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const char *name);
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struct pim_upstream *pim_upstream_add (struct prefix_sg *sg,
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struct interface *ifp, int flags,
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const char *name);
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void pim_upstream_ref (struct pim_upstream *up, int flags);
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struct pim_upstream *pim_upstream_del(struct pim_upstream *up, const char *name);
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int pim_upstream_evaluate_join_desired(struct pim_upstream *up);
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int pim_upstream_evaluate_join_desired_interface(struct pim_upstream *up,
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struct pim_ifchannel *ch,
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struct pim_ifchannel *starch);
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void pim_upstream_update_join_desired(struct pim_upstream *up);
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void pim_upstream_join_suppress(struct pim_upstream *up,
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struct in_addr rpf_addr,
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int holdtime);
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void pim_upstream_join_timer_decrease_to_t_override(const char *debug_label,
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struct pim_upstream *up);
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void pim_upstream_join_timer_restart(struct pim_upstream *up, struct pim_rpf *old);
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void pim_upstream_rpf_genid_changed(struct in_addr neigh_addr);
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void pim_upstream_rpf_interface_changed(struct pim_upstream *up,
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struct interface *old_rpf_ifp);
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void pim_upstream_update_could_assert(struct pim_upstream *up);
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void pim_upstream_update_my_assert_metric(struct pim_upstream *up);
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void pim_upstream_keep_alive_timer_start (struct pim_upstream *up, uint32_t time);
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int pim_upstream_switch_to_spt_desired (struct prefix_sg *sg);
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#define SwitchToSptDesired(sg) pim_upstream_switch_to_spt_desired (sg)
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int pim_upstream_is_sg_rpt (struct pim_upstream *up);
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void pim_upstream_set_sptbit (struct pim_upstream *up, struct interface *incoming);
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void pim_upstream_start_register_stop_timer (struct pim_upstream *up, int null_register);
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void pim_upstream_send_join (struct pim_upstream *up);
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void pim_upstream_switch (struct pim_upstream *up, enum pim_upstream_state new_state);
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const char *pim_upstream_state2str (enum pim_upstream_state join_state);
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#define PIM_REG_STATE_STR_LEN 12
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const char *pim_reg_state2str (enum pim_reg_state state, char *state_str);
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int pim_upstream_inherited_olist_decide (struct pim_upstream *up);
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int pim_upstream_inherited_olist (struct pim_upstream *up);
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int pim_upstream_empty_inherited_olist (struct pim_upstream *up);
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void pim_upstream_find_new_rpf (void);
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void pim_upstream_msdp_reg_timer_start(struct pim_upstream *up);
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void pim_upstream_init (void);
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void pim_upstream_terminate (void);
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void join_timer_start (struct pim_upstream *up);
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int pim_upstream_compare (void *arg1, void *arg2);
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void pim_upstream_register_reevaluate (void);
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void pim_upstream_add_lhr_star_pimreg (void);
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void pim_upstream_remove_lhr_star_pimreg (const char *nlist);
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void pim_upstream_spt_prefix_list_update (struct prefix_list *pl);
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#endif /* PIM_UPSTREAM_H */
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