Annotation of embedaddon/quagga/pimd/pim_ifchannel.h, revision 1.1
1.1 ! misho 1: /*
! 2: PIM for Quagga
! 3: Copyright (C) 2008 Everton da Silva Marques
! 4:
! 5: This program is free software; you can redistribute it and/or modify
! 6: it under the terms of the GNU General Public License as published by
! 7: the Free Software Foundation; either version 2 of the License, or
! 8: (at your option) any later version.
! 9:
! 10: This program is distributed in the hope that it will be useful, but
! 11: WITHOUT ANY WARRANTY; without even the implied warranty of
! 12: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
! 13: General Public License for more details.
! 14:
! 15: You should have received a copy of the GNU General Public License
! 16: along with this program; see the file COPYING; if not, write to the
! 17: Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
! 18: MA 02110-1301 USA
! 19:
! 20: $QuaggaId: $Format:%an, %ai, %h$ $
! 21: */
! 22:
! 23: #ifndef PIM_IFCHANNEL_H
! 24: #define PIM_IFCHANNEL_H
! 25:
! 26: #include <zebra.h>
! 27:
! 28: #include "if.h"
! 29:
! 30: #include "pim_upstream.h"
! 31:
! 32: enum pim_ifmembership {
! 33: PIM_IFMEMBERSHIP_NOINFO,
! 34: PIM_IFMEMBERSHIP_INCLUDE
! 35: };
! 36:
! 37: enum pim_ifjoin_state {
! 38: PIM_IFJOIN_NOINFO,
! 39: PIM_IFJOIN_JOIN,
! 40: PIM_IFJOIN_PRUNE_PENDING
! 41: };
! 42:
! 43: enum pim_ifassert_state {
! 44: PIM_IFASSERT_NOINFO,
! 45: PIM_IFASSERT_I_AM_WINNER,
! 46: PIM_IFASSERT_I_AM_LOSER
! 47: };
! 48:
! 49: struct pim_assert_metric {
! 50: uint32_t rpt_bit_flag;
! 51: uint32_t metric_preference;
! 52: uint32_t route_metric;
! 53: struct in_addr ip_address; /* neighbor router that sourced the Assert message */
! 54: };
! 55:
! 56: /*
! 57: Flag to detect change in CouldAssert(S,G,I)
! 58: */
! 59: #define PIM_IF_FLAG_MASK_COULD_ASSERT (1 << 0)
! 60: #define PIM_IF_FLAG_TEST_COULD_ASSERT(flags) ((flags) & PIM_IF_FLAG_MASK_COULD_ASSERT)
! 61: #define PIM_IF_FLAG_SET_COULD_ASSERT(flags) ((flags) |= PIM_IF_FLAG_MASK_COULD_ASSERT)
! 62: #define PIM_IF_FLAG_UNSET_COULD_ASSERT(flags) ((flags) &= ~PIM_IF_FLAG_MASK_COULD_ASSERT)
! 63: /*
! 64: Flag to detect change in AssertTrackingDesired(S,G,I)
! 65: */
! 66: #define PIM_IF_FLAG_MASK_ASSERT_TRACKING_DESIRED (1 << 1)
! 67: #define PIM_IF_FLAG_TEST_ASSERT_TRACKING_DESIRED(flags) ((flags) & PIM_IF_FLAG_MASK_ASSERT_TRACKING_DESIRED)
! 68: #define PIM_IF_FLAG_SET_ASSERT_TRACKING_DESIRED(flags) ((flags) |= PIM_IF_FLAG_MASK_ASSERT_TRACKING_DESIRED)
! 69: #define PIM_IF_FLAG_UNSET_ASSERT_TRACKING_DESIRED(flags) ((flags) &= ~PIM_IF_FLAG_MASK_ASSERT_TRACKING_DESIRED)
! 70:
! 71: /*
! 72: Per-interface (S,G) state
! 73: */
! 74: struct pim_ifchannel {
! 75: struct in_addr source_addr; /* (S,G) source key */
! 76: struct in_addr group_addr; /* (S,G) group key */
! 77: struct interface *interface; /* backpointer to interface */
! 78: uint32_t flags;
! 79:
! 80: /* IGMPv3 determined interface has local members for (S,G) ? */
! 81: enum pim_ifmembership local_ifmembership;
! 82:
! 83: /* Per-interface (S,G) Join/Prune State (Section 4.1.4 of RFC4601) */
! 84: enum pim_ifjoin_state ifjoin_state;
! 85: struct thread *t_ifjoin_expiry_timer;
! 86: struct thread *t_ifjoin_prune_pending_timer;
! 87: int64_t ifjoin_creation; /* Record uptime of ifjoin state */
! 88:
! 89: /* Per-interface (S,G) Assert State (Section 4.6.1 of RFC4601) */
! 90: enum pim_ifassert_state ifassert_state;
! 91: struct thread *t_ifassert_timer;
! 92: struct in_addr ifassert_winner;
! 93: struct pim_assert_metric ifassert_winner_metric;
! 94: int64_t ifassert_creation; /* Record uptime of ifassert state */
! 95: struct pim_assert_metric ifassert_my_metric;
! 96:
! 97: /* Upstream (S,G) state */
! 98: struct pim_upstream *upstream;
! 99: };
! 100:
! 101: void pim_ifchannel_free(struct pim_ifchannel *ch);
! 102: void pim_ifchannel_delete(struct pim_ifchannel *ch);
! 103: void pim_ifchannel_membership_clear(struct interface *ifp);
! 104: void pim_ifchannel_delete_on_noinfo(struct interface *ifp);
! 105: struct pim_ifchannel *pim_ifchannel_find(struct interface *ifp,
! 106: struct in_addr source_addr,
! 107: struct in_addr group_addr);
! 108: struct pim_ifchannel *pim_ifchannel_add(struct interface *ifp,
! 109: struct in_addr source_addr,
! 110: struct in_addr group_addr);
! 111: void pim_ifchannel_join_add(struct interface *ifp,
! 112: struct in_addr neigh_addr,
! 113: struct in_addr upstream,
! 114: struct in_addr source_addr,
! 115: struct in_addr group_addr,
! 116: uint8_t source_flags,
! 117: uint16_t holdtime);
! 118: void pim_ifchannel_prune(struct interface *ifp,
! 119: struct in_addr upstream,
! 120: struct in_addr source_addr,
! 121: struct in_addr group_addr,
! 122: uint8_t source_flags,
! 123: uint16_t holdtime);
! 124: void pim_ifchannel_local_membership_add(struct interface *ifp,
! 125: struct in_addr source_addr,
! 126: struct in_addr group_addr);
! 127: void pim_ifchannel_local_membership_del(struct interface *ifp,
! 128: struct in_addr source_addr,
! 129: struct in_addr group_addr);
! 130:
! 131: void pim_ifchannel_ifjoin_switch(const char *caller,
! 132: struct pim_ifchannel *ch,
! 133: enum pim_ifjoin_state new_state);
! 134: const char *pim_ifchannel_ifjoin_name(enum pim_ifjoin_state ifjoin_state);
! 135: const char *pim_ifchannel_ifassert_name(enum pim_ifassert_state ifassert_state);
! 136:
! 137: int pim_ifchannel_isin_oiflist(struct pim_ifchannel *ch);
! 138:
! 139: void reset_ifassert_state(struct pim_ifchannel *ch);
! 140:
! 141: void pim_ifchannel_update_could_assert(struct pim_ifchannel *ch);
! 142: void pim_ifchannel_update_my_assert_metric(struct pim_ifchannel *ch);
! 143: void pim_ifchannel_update_assert_tracking_desired(struct pim_ifchannel *ch);
! 144:
! 145: #endif /* PIM_IFCHANNEL_H */
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