Annotation of embedaddon/quagga/pimd/pim_upstream.h, revision 1.1.1.1
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_UPSTREAM_H
24: #define PIM_UPSTREAM_H
25:
26: #include <zebra.h>
27:
28: #define PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED (1 << 0)
29: #define PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED_UPDATED (2 << 0)
30:
31: #define PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED)
32: #define PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED_UPDATED(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED_UPDATED)
33:
34: #define PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED)
35: #define PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED_UPDATED(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED_UPDATED)
36:
37: #define PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED)
38: #define PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED_UPDATED(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED_UPDATED)
39:
40: /*
41: RFC 4601:
42:
43: Metric Preference
44: Preference value assigned to the unicast routing protocol that
45: provided the route to the multicast source or Rendezvous-Point.
46:
47: Metric
48: The unicast routing table metric associated with the route used to
49: reach the multicast source or Rendezvous-Point. The metric is in
50: units applicable to the unicast routing protocol used.
51: */
52: struct pim_nexthop {
53: struct interface *interface; /* RPF_interface(S) */
54: struct in_addr mrib_nexthop_addr; /* MRIB.next_hop(S) */
55: uint32_t mrib_metric_preference; /* MRIB.pref(S) */
56: uint32_t mrib_route_metric; /* MRIB.metric(S) */
57: };
58:
59: struct pim_rpf {
60: struct pim_nexthop source_nexthop;
61: struct in_addr rpf_addr; /* RPF'(S,G) */
62: };
63:
64: enum pim_rpf_result {
65: PIM_RPF_OK = 0,
66: PIM_RPF_CHANGED,
67: PIM_RPF_FAILURE
68: };
69:
70: enum pim_upstream_state {
71: PIM_UPSTREAM_NOTJOINED,
72: PIM_UPSTREAM_JOINED
73: };
74:
75: /*
76: Upstream (S,G) channel in Joined state
77:
78: (S,G) in the "Not Joined" state is not represented
79:
80: See RFC 4601: 4.5.7. Sending (S,G) Join/Prune Message
81: */
82: struct pim_upstream {
83: struct in_addr source_addr; /* (S,G) source key */
84: struct in_addr group_addr; /* (S,G) group key */
85: uint32_t flags;
86: struct channel_oil *channel_oil;
87:
88: enum pim_upstream_state join_state;
89: int ref_count;
90:
91: struct pim_rpf rpf;
92:
93: struct thread *t_join_timer;
94: int64_t state_transition; /* Record current state uptime */
95: };
96:
97: void pim_upstream_free(struct pim_upstream *up);
98: void pim_upstream_delete(struct pim_upstream *up);
99: struct pim_upstream *pim_upstream_find(struct in_addr source_addr,
100: struct in_addr group_addr);
101: struct pim_upstream *pim_upstream_add(struct in_addr source_addr,
102: struct in_addr group_addr);
103: void pim_upstream_del(struct pim_upstream *up);
104:
105: int pim_upstream_evaluate_join_desired(struct pim_upstream *up);
106: void pim_upstream_update_join_desired(struct pim_upstream *up);
107:
108: void pim_upstream_join_suppress(struct pim_upstream *up,
109: struct in_addr rpf_addr,
110: int holdtime);
111: void pim_upstream_join_timer_decrease_to_t_override(const char *debug_label,
112: struct pim_upstream *up,
113: struct in_addr rpf_addr);
114: void pim_upstream_join_timer_restart(struct pim_upstream *up);
115: void pim_upstream_rpf_genid_changed(struct in_addr neigh_addr);
116: void pim_upstream_rpf_interface_changed(struct pim_upstream *up,
117: struct interface *old_rpf_ifp);
118:
119: void pim_upstream_update_could_assert(struct pim_upstream *up);
120: void pim_upstream_update_my_assert_metric(struct pim_upstream *up);
121:
122: #endif /* PIM_UPSTREAM_H */
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