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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_OIL_H | |
21 | #define PIM_OIL_H | |
22 | ||
23 | #include "pim_mroute.h" | |
24 | ||
25 | /* | |
26 | * Where did we get this (S,G) from? | |
27 | * | |
28 | * IGMP - Learned from IGMP | |
29 | * PIM - Learned from PIM | |
30 | * SOURCE - Learned from Source multicast packet received | |
31 | * STAR - Inherited | |
32 | */ | |
33 | #define PIM_OIF_FLAG_PROTO_IGMP (1 << 0) | |
34 | #define PIM_OIF_FLAG_PROTO_PIM (1 << 1) | |
35 | #define PIM_OIF_FLAG_PROTO_SOURCE (1 << 2) | |
36 | #define PIM_OIF_FLAG_PROTO_STAR (1 << 3) | |
37 | #define PIM_OIF_FLAG_PROTO_ANY \ | |
38 | (PIM_OIF_FLAG_PROTO_IGMP | PIM_OIF_FLAG_PROTO_PIM \ | |
39 | | PIM_OIF_FLAG_PROTO_SOURCE | PIM_OIF_FLAG_PROTO_STAR) | |
40 | ||
41 | /* | |
42 | * We need a pimreg vif id from the kernel. | |
43 | * Since ifindex == vif id for most cases and the number | |
44 | * of expected interfaces is at most 100, using MAXVIFS -1 | |
45 | * is probably ok. | |
46 | * Don't come running to me if this assumption is bad, | |
47 | * fix it. | |
48 | */ | |
49 | #define PIM_OIF_PIM_REGISTER_VIF 0 | |
50 | #define PIM_MAX_USABLE_VIFS (MAXVIFS - 1) | |
51 | ||
52 | struct channel_counts { | |
53 | unsigned long long lastused; | |
54 | unsigned long pktcnt; | |
55 | unsigned long oldpktcnt; | |
56 | unsigned long bytecnt; | |
57 | unsigned long oldbytecnt; | |
58 | unsigned long wrong_if; | |
59 | unsigned long oldwrong_if; | |
60 | }; | |
61 | ||
62 | /* | |
63 | qpim_channel_oil_list holds a list of struct channel_oil. | |
64 | ||
65 | Each channel_oil.oil is used to control an (S,G) entry in the Kernel | |
66 | Multicast Forwarding Cache. | |
67 | */ | |
68 | ||
69 | struct channel_oil { | |
70 | struct pim_instance *pim; | |
71 | ||
72 | struct mfcctl oil; | |
73 | int installed; | |
74 | int oil_inherited_rescan; | |
75 | int oil_size; | |
76 | int oil_ref_count; | |
77 | time_t oif_creation[MAXVIFS]; | |
78 | uint32_t oif_flags[MAXVIFS]; | |
79 | struct channel_counts cc; | |
80 | struct pim_upstream *up; | |
81 | }; | |
82 | ||
83 | extern struct list *pim_channel_oil_list; | |
84 | ||
85 | void pim_oil_init(struct pim_instance *pim); | |
86 | void pim_oil_terminate(struct pim_instance *pim); | |
87 | ||
88 | void pim_channel_oil_free(struct channel_oil *c_oil); | |
89 | struct channel_oil *pim_find_channel_oil(struct pim_instance *pim, | |
90 | struct prefix_sg *sg); | |
91 | struct channel_oil *pim_channel_oil_add(struct pim_instance *pim, | |
92 | struct prefix_sg *sg, | |
93 | int input_vif_index); | |
94 | void pim_channel_oil_del(struct channel_oil *c_oil); | |
95 | ||
96 | int pim_channel_add_oif(struct channel_oil *c_oil, struct interface *oif, | |
97 | uint32_t proto_mask); | |
98 | int pim_channel_del_oif(struct channel_oil *c_oil, struct interface *oif, | |
99 | uint32_t proto_mask); | |
100 | ||
101 | int pim_channel_oil_empty(struct channel_oil *c_oil); | |
102 | ||
103 | char *pim_channel_oil_dump(struct channel_oil *c_oil, char *buf, size_t size); | |
104 | #endif /* PIM_OIL_H */ |