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99f9518b4a
problem : ========= When (*,G) prune received where we have SGRpt state, ifchannel goes to NO_INFO state and doesn't get removed. Root cause : ============ During the processing of (*,G) prune, we are not removing the ifchannel on PruneTmp or PrunePendingTmp state. Fix : ===== In that scenario, stop joinExpiry timer and delete the ifchannel. issue #7347 Co-authored-by: Saravanan K <saravanank@vmware.com> Signed-off-by: vishaldhingra <vdhingra@vmware.com>
178 lines
6.5 KiB
C
178 lines
6.5 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_IFCHANNEL_H
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#define PIM_IFCHANNEL_H
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#include <zebra.h>
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#include "if.h"
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#include "prefix.h"
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struct pim_ifchannel;
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#include "pim_upstream.h"
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enum pim_ifmembership { PIM_IFMEMBERSHIP_NOINFO, PIM_IFMEMBERSHIP_INCLUDE };
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enum pim_ifjoin_state {
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PIM_IFJOIN_NOINFO,
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PIM_IFJOIN_JOIN,
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PIM_IFJOIN_PRUNE,
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PIM_IFJOIN_PRUNE_PENDING,
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PIM_IFJOIN_PRUNE_TMP,
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PIM_IFJOIN_PRUNE_PENDING_TMP,
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};
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enum pim_ifassert_state {
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PIM_IFASSERT_NOINFO,
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PIM_IFASSERT_I_AM_WINNER,
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PIM_IFASSERT_I_AM_LOSER
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};
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struct pim_assert_metric {
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uint32_t rpt_bit_flag;
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uint32_t metric_preference;
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uint32_t route_metric;
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struct in_addr ip_address; /* neighbor router that sourced the Assert
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message */
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};
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/*
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Flag to detect change in CouldAssert(S,G,I)
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*/
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#define PIM_IF_FLAG_MASK_COULD_ASSERT (1 << 0)
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#define PIM_IF_FLAG_TEST_COULD_ASSERT(flags) ((flags) & PIM_IF_FLAG_MASK_COULD_ASSERT)
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#define PIM_IF_FLAG_SET_COULD_ASSERT(flags) ((flags) |= PIM_IF_FLAG_MASK_COULD_ASSERT)
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#define PIM_IF_FLAG_UNSET_COULD_ASSERT(flags) ((flags) &= ~PIM_IF_FLAG_MASK_COULD_ASSERT)
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/*
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Flag to detect change in AssertTrackingDesired(S,G,I)
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*/
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#define PIM_IF_FLAG_MASK_ASSERT_TRACKING_DESIRED (1 << 1)
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#define PIM_IF_FLAG_TEST_ASSERT_TRACKING_DESIRED(flags) ((flags) & PIM_IF_FLAG_MASK_ASSERT_TRACKING_DESIRED)
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#define PIM_IF_FLAG_SET_ASSERT_TRACKING_DESIRED(flags) ((flags) |= PIM_IF_FLAG_MASK_ASSERT_TRACKING_DESIRED)
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#define PIM_IF_FLAG_UNSET_ASSERT_TRACKING_DESIRED(flags) ((flags) &= ~PIM_IF_FLAG_MASK_ASSERT_TRACKING_DESIRED)
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/*
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* Flag to tell us if the ifchannel is (S,G,rpt)
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*/
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#define PIM_IF_FLAG_MASK_S_G_RPT (1 << 2)
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#define PIM_IF_FLAG_TEST_S_G_RPT(flags) ((flags) & PIM_IF_FLAG_MASK_S_G_RPT)
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#define PIM_IF_FLAG_SET_S_G_RPT(flags) ((flags) |= PIM_IF_FLAG_MASK_S_G_RPT)
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#define PIM_IF_FLAG_UNSET_S_G_RPT(flags) ((flags) &= ~PIM_IF_FLAG_MASK_S_G_RPT)
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/*
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* Flag to tell us if the ifchannel is proto PIM
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*/
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#define PIM_IF_FLAG_MASK_PROTO_PIM (1 << 3)
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#define PIM_IF_FLAG_TEST_PROTO_PIM(flags) ((flags)&PIM_IF_FLAG_MASK_PROTO_PIM)
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#define PIM_IF_FLAG_SET_PROTO_PIM(flags) ((flags) |= PIM_IF_FLAG_MASK_PROTO_PIM)
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#define PIM_IF_FLAG_UNSET_PROTO_PIM(flags) \
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((flags) &= ~PIM_IF_FLAG_MASK_PROTO_PIM)
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/*
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* Flag to tell us if the ifchannel is proto IGMP
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*/
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#define PIM_IF_FLAG_MASK_PROTO_IGMP (1 << 4)
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#define PIM_IF_FLAG_TEST_PROTO_IGMP(flags) ((flags)&PIM_IF_FLAG_MASK_PROTO_IGMP)
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#define PIM_IF_FLAG_SET_PROTO_IGMP(flags) \
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((flags) |= PIM_IF_FLAG_MASK_PROTO_IGMP)
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#define PIM_IF_FLAG_UNSET_PROTO_IGMP(flags) \
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((flags) &= ~PIM_IF_FLAG_MASK_PROTO_IGMP)
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/*
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Per-interface (S,G) state
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*/
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struct pim_ifchannel {
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RB_ENTRY(rb_ifchannel) pim_ifp_rb;
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struct pim_ifchannel *parent;
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struct list *sources;
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struct prefix_sg sg;
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char sg_str[PIM_SG_LEN];
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struct interface *interface; /* backpointer to interface */
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uint32_t flags;
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/* IGMPv3 determined interface has local members for (S,G) ? */
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enum pim_ifmembership local_ifmembership;
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/* Per-interface (S,G) Join/Prune State (Section 4.1.4 of RFC4601) */
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enum pim_ifjoin_state ifjoin_state;
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struct thread *t_ifjoin_expiry_timer;
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struct thread *t_ifjoin_prune_pending_timer;
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int64_t ifjoin_creation; /* Record uptime of ifjoin state */
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/* Per-interface (S,G) Assert State (Section 4.6.1 of RFC4601) */
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enum pim_ifassert_state ifassert_state;
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struct thread *t_ifassert_timer;
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struct in_addr ifassert_winner;
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struct pim_assert_metric ifassert_winner_metric;
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int64_t ifassert_creation; /* Record uptime of ifassert state */
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struct pim_assert_metric ifassert_my_metric;
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/* Upstream (S,G) state */
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struct pim_upstream *upstream;
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};
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RB_HEAD(pim_ifchannel_rb, pim_ifchannel);
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RB_PROTOTYPE(pim_ifchannel_rb, pim_ifchannel, pim_ifp_rb,
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pim_ifchannel_compare);
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void pim_ifchannel_delete(struct pim_ifchannel *ch);
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void pim_ifchannel_delete_all(struct interface *ifp);
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void pim_ifchannel_membership_clear(struct interface *ifp);
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void pim_ifchannel_delete_on_noinfo(struct interface *ifp);
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struct pim_ifchannel *pim_ifchannel_find(struct interface *ifp,
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struct prefix_sg *sg);
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struct pim_ifchannel *pim_ifchannel_add(struct interface *ifp,
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struct prefix_sg *sg, uint8_t ch_flags,
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int up_flags);
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void pim_ifchannel_join_add(struct interface *ifp, struct in_addr neigh_addr,
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struct in_addr upstream, struct prefix_sg *sg,
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uint8_t source_flags, uint16_t holdtime);
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void pim_ifchannel_prune(struct interface *ifp, struct in_addr upstream,
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struct prefix_sg *sg, uint8_t source_flags,
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uint16_t holdtime);
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int pim_ifchannel_local_membership_add(struct interface *ifp,
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struct prefix_sg *sg, bool is_vxlan);
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void pim_ifchannel_local_membership_del(struct interface *ifp,
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struct prefix_sg *sg);
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void pim_ifchannel_ifjoin_switch(const char *caller, struct pim_ifchannel *ch,
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enum pim_ifjoin_state new_state);
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const char *pim_ifchannel_ifjoin_name(enum pim_ifjoin_state ifjoin_state,
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int flags);
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const char *pim_ifchannel_ifassert_name(enum pim_ifassert_state ifassert_state);
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int pim_ifchannel_isin_oiflist(struct pim_ifchannel *ch);
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void reset_ifassert_state(struct pim_ifchannel *ch);
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void pim_ifchannel_update_could_assert(struct pim_ifchannel *ch);
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void pim_ifchannel_update_my_assert_metric(struct pim_ifchannel *ch);
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void pim_ifchannel_update_assert_tracking_desired(struct pim_ifchannel *ch);
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void pim_ifchannel_scan_forward_start(struct interface *new_ifp);
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void pim_ifchannel_set_star_g_join_state(struct pim_ifchannel *ch, int eom,
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uint8_t join);
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int pim_ifchannel_compare(const struct pim_ifchannel *ch1,
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const struct pim_ifchannel *ch2);
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unsigned int pim_ifchannel_hash_key(const void *arg);
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void delete_on_noinfo(struct pim_ifchannel *ch);
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#endif /* PIM_IFCHANNEL_H */
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