Line data Source code
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 along
16 : * with this program; see the file COPYING; if not, write to the Free Software
17 : * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 : */
19 :
20 : #ifndef PIM_IFCHANNEL_H
21 : #define PIM_IFCHANNEL_H
22 :
23 : #include <zebra.h>
24 :
25 : #include "if.h"
26 : #include "prefix.h"
27 :
28 : #include "pim_assert.h"
29 :
30 : struct pim_ifchannel;
31 : #include "pim_upstream.h"
32 :
33 : enum pim_ifmembership { PIM_IFMEMBERSHIP_NOINFO, PIM_IFMEMBERSHIP_INCLUDE };
34 :
35 : enum pim_ifjoin_state {
36 : PIM_IFJOIN_NOINFO,
37 : PIM_IFJOIN_JOIN,
38 : PIM_IFJOIN_PRUNE,
39 : PIM_IFJOIN_PRUNE_PENDING,
40 : PIM_IFJOIN_PRUNE_TMP,
41 : PIM_IFJOIN_PRUNE_PENDING_TMP,
42 : };
43 :
44 : /*
45 : Flag to detect change in CouldAssert(S,G,I)
46 : */
47 : #define PIM_IF_FLAG_MASK_COULD_ASSERT (1 << 0)
48 : #define PIM_IF_FLAG_TEST_COULD_ASSERT(flags) ((flags) & PIM_IF_FLAG_MASK_COULD_ASSERT)
49 : #define PIM_IF_FLAG_SET_COULD_ASSERT(flags) ((flags) |= PIM_IF_FLAG_MASK_COULD_ASSERT)
50 : #define PIM_IF_FLAG_UNSET_COULD_ASSERT(flags) ((flags) &= ~PIM_IF_FLAG_MASK_COULD_ASSERT)
51 : /*
52 : Flag to detect change in AssertTrackingDesired(S,G,I)
53 : */
54 : #define PIM_IF_FLAG_MASK_ASSERT_TRACKING_DESIRED (1 << 1)
55 : #define PIM_IF_FLAG_TEST_ASSERT_TRACKING_DESIRED(flags) ((flags) & PIM_IF_FLAG_MASK_ASSERT_TRACKING_DESIRED)
56 : #define PIM_IF_FLAG_SET_ASSERT_TRACKING_DESIRED(flags) ((flags) |= PIM_IF_FLAG_MASK_ASSERT_TRACKING_DESIRED)
57 : #define PIM_IF_FLAG_UNSET_ASSERT_TRACKING_DESIRED(flags) ((flags) &= ~PIM_IF_FLAG_MASK_ASSERT_TRACKING_DESIRED)
58 :
59 : /*
60 : * Flag to tell us if the ifchannel is (S,G,rpt)
61 : */
62 : #define PIM_IF_FLAG_MASK_S_G_RPT (1 << 2)
63 : #define PIM_IF_FLAG_TEST_S_G_RPT(flags) ((flags) & PIM_IF_FLAG_MASK_S_G_RPT)
64 : #define PIM_IF_FLAG_SET_S_G_RPT(flags) ((flags) |= PIM_IF_FLAG_MASK_S_G_RPT)
65 : #define PIM_IF_FLAG_UNSET_S_G_RPT(flags) ((flags) &= ~PIM_IF_FLAG_MASK_S_G_RPT)
66 :
67 : /*
68 : * Flag to tell us if the ifchannel is proto PIM
69 : */
70 : #define PIM_IF_FLAG_MASK_PROTO_PIM (1 << 3)
71 : #define PIM_IF_FLAG_TEST_PROTO_PIM(flags) ((flags)&PIM_IF_FLAG_MASK_PROTO_PIM)
72 : #define PIM_IF_FLAG_SET_PROTO_PIM(flags) ((flags) |= PIM_IF_FLAG_MASK_PROTO_PIM)
73 : #define PIM_IF_FLAG_UNSET_PROTO_PIM(flags) \
74 : ((flags) &= ~PIM_IF_FLAG_MASK_PROTO_PIM)
75 : /*
76 : * Flag to tell us if the ifchannel is proto IGMP
77 : */
78 : #define PIM_IF_FLAG_MASK_PROTO_IGMP (1 << 4)
79 : #define PIM_IF_FLAG_TEST_PROTO_IGMP(flags) ((flags)&PIM_IF_FLAG_MASK_PROTO_IGMP)
80 : #define PIM_IF_FLAG_SET_PROTO_IGMP(flags) \
81 : ((flags) |= PIM_IF_FLAG_MASK_PROTO_IGMP)
82 : #define PIM_IF_FLAG_UNSET_PROTO_IGMP(flags) \
83 : ((flags) &= ~PIM_IF_FLAG_MASK_PROTO_IGMP)
84 : /*
85 : Per-interface (S,G) state
86 : */
87 : struct pim_ifchannel {
88 : RB_ENTRY(rb_ifchannel) pim_ifp_rb;
89 :
90 : struct pim_ifchannel *parent;
91 : struct list *sources;
92 : pim_sgaddr sg;
93 : char sg_str[PIM_SG_LEN];
94 : struct interface *interface; /* backpointer to interface */
95 : uint32_t flags;
96 :
97 : /* IGMPv3 determined interface has local members for (S,G) ? */
98 : enum pim_ifmembership local_ifmembership;
99 :
100 : /* Per-interface (S,G) Join/Prune State (Section 4.1.4 of RFC4601) */
101 : enum pim_ifjoin_state ifjoin_state;
102 : struct thread *t_ifjoin_expiry_timer;
103 : struct thread *t_ifjoin_prune_pending_timer;
104 : int64_t ifjoin_creation; /* Record uptime of ifjoin state */
105 :
106 : /* Per-interface (S,G) Assert State (Section 4.6.1 of RFC4601) */
107 : enum pim_ifassert_state ifassert_state;
108 : struct thread *t_ifassert_timer;
109 : pim_addr ifassert_winner;
110 : struct pim_assert_metric ifassert_winner_metric;
111 : int64_t ifassert_creation; /* Record uptime of ifassert state */
112 : struct pim_assert_metric ifassert_my_metric;
113 :
114 : /* Upstream (S,G) state */
115 : struct pim_upstream *upstream;
116 : };
117 :
118 : RB_HEAD(pim_ifchannel_rb, pim_ifchannel);
119 521 : RB_PROTOTYPE(pim_ifchannel_rb, pim_ifchannel, pim_ifp_rb,
120 : pim_ifchannel_compare);
121 :
122 : void pim_ifchannel_delete(struct pim_ifchannel *ch);
123 : void pim_ifchannel_delete_all(struct interface *ifp);
124 : void pim_ifchannel_membership_clear(struct interface *ifp);
125 : void pim_ifchannel_delete_on_noinfo(struct interface *ifp);
126 : struct pim_ifchannel *pim_ifchannel_find(struct interface *ifp, pim_sgaddr *sg);
127 : struct pim_ifchannel *pim_ifchannel_add(struct interface *ifp, pim_sgaddr *sg,
128 : uint8_t ch_flags, int up_flags);
129 : void pim_ifchannel_join_add(struct interface *ifp, pim_addr neigh_addr,
130 : pim_addr upstream, pim_sgaddr *sg,
131 : uint8_t source_flags, uint16_t holdtime);
132 : void pim_ifchannel_prune(struct interface *ifp, pim_addr upstream,
133 : pim_sgaddr *sg, uint8_t source_flags,
134 : uint16_t holdtime);
135 : int pim_ifchannel_local_membership_add(struct interface *ifp, pim_sgaddr *sg,
136 : bool is_vxlan);
137 : void pim_ifchannel_local_membership_del(struct interface *ifp, pim_sgaddr *sg);
138 :
139 : void pim_ifchannel_ifjoin_switch(const char *caller, struct pim_ifchannel *ch,
140 : enum pim_ifjoin_state new_state);
141 : const char *pim_ifchannel_ifjoin_name(enum pim_ifjoin_state ifjoin_state,
142 : int flags);
143 : const char *pim_ifchannel_ifassert_name(enum pim_ifassert_state ifassert_state);
144 :
145 : int pim_ifchannel_isin_oiflist(struct pim_ifchannel *ch);
146 :
147 : void reset_ifassert_state(struct pim_ifchannel *ch);
148 :
149 : void pim_ifchannel_update_could_assert(struct pim_ifchannel *ch);
150 : void pim_ifchannel_update_my_assert_metric(struct pim_ifchannel *ch);
151 : void pim_ifchannel_update_assert_tracking_desired(struct pim_ifchannel *ch);
152 :
153 : void pim_ifchannel_scan_forward_start(struct interface *new_ifp);
154 : void pim_ifchannel_set_star_g_join_state(struct pim_ifchannel *ch, int eom,
155 : uint8_t join);
156 :
157 : int pim_ifchannel_compare(const struct pim_ifchannel *ch1,
158 : const struct pim_ifchannel *ch2);
159 :
160 : void delete_on_noinfo(struct pim_ifchannel *ch);
161 : #endif /* PIM_IFCHANNEL_H */
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