Annotation of embedaddon/quagga/pimd/pim_ifchannel.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_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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