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12e41d03 DL |
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 | |
12e41d03 DL |
19 | */ |
20 | ||
21 | #ifndef PIM_MSG_H | |
22 | #define PIM_MSG_H | |
23 | ||
24 | #include <netinet/in.h> | |
25 | ||
982bff89 | 26 | #include "pim_jp_agg.h" |
12e41d03 DL |
27 | /* |
28 | Number Description | |
29 | ---------- ------------------ | |
30 | 0 Reserved | |
31 | 1 IP (IP version 4) | |
32 | 2 IP6 (IP version 6) | |
33 | ||
34 | From: | |
35 | http://www.iana.org/assignments/address-family-numbers | |
36 | */ | |
37 | #define PIM_MSG_ADDRESS_FAMILY_IPV4 (1) | |
38 | ||
70ce34ae DS |
39 | /* |
40 | * Network Order pim_msg_hdr | |
41 | */ | |
42 | struct pim_msg_header { | |
43 | uint8_t type:4; | |
44 | uint8_t ver:4; | |
45 | uint8_t reserved; | |
46 | uint16_t checksum; | |
47 | } __attribute__ ((packed)); | |
48 | ||
74ac496f DS |
49 | struct pim_encoded_ipv4_unicast { |
50 | uint8_t family; | |
51 | uint8_t reserved; | |
52 | struct in_addr addr; | |
53 | } __attribute__ ((packed)); | |
54 | ||
55 | struct pim_encoded_group_ipv4 { | |
56 | uint8_t ne; | |
57 | uint8_t family; | |
58 | uint8_t reserved; | |
59 | uint8_t mask; | |
60 | struct in_addr addr; | |
61 | } __attribute__ ((packed)); | |
62 | ||
63 | struct pim_encoded_source_ipv4 { | |
64 | uint8_t ne; | |
65 | uint8_t family; | |
66 | uint8_t bits; | |
67 | uint8_t mask; | |
68 | struct in_addr addr; | |
69 | } __attribute__ ((packed)); | |
70 | ||
71 | struct pim_jp_groups { | |
72 | struct pim_encoded_group_ipv4 g; | |
73 | uint16_t joins; | |
74 | uint16_t prunes; | |
75 | struct pim_encoded_source_ipv4 s[1]; | |
76 | } __attribute__ ((packed)); | |
77 | ||
78 | struct pim_jp { | |
79 | struct pim_msg_header header; | |
80 | struct pim_encoded_ipv4_unicast addr; | |
81 | uint8_t reserved; | |
82 | uint8_t num_groups; | |
83 | uint16_t holdtime; | |
84 | struct pim_jp_groups groups[1]; | |
85 | } __attribute__ ((packed)); | |
86 | ||
f8e7d799 DS |
87 | void pim_msg_build_header(uint8_t *pim_msg, size_t pim_msg_size, uint8_t pim_msg_type); |
88 | uint8_t *pim_msg_addr_encode_ipv4_ucast(uint8_t *buf, struct in_addr addr); | |
89 | uint8_t *pim_msg_addr_encode_ipv4_group(uint8_t *buf, struct in_addr addr); | |
984c84f4 DS |
90 | |
91 | #define PIM_ENCODE_SPARSE_BIT 0x04 | |
92 | #define PIM_ENCODE_WC_BIT 0x02 | |
93 | #define PIM_ENCODE_RPT_BIT 0x01 | |
12e41d03 | 94 | uint8_t *pim_msg_addr_encode_ipv4_source(uint8_t *buf, |
f8e7d799 | 95 | struct in_addr addr, uint8_t bits); |
12e41d03 | 96 | |
346cffe3 | 97 | |
982bff89 | 98 | size_t pim_msg_get_jp_group_size (struct list *sources); |
e7eefda4 | 99 | size_t pim_msg_build_jp_groups (struct pim_jp_groups *grp, struct pim_jp_agg_group *sgs, size_t size); |
12e41d03 | 100 | #endif /* PIM_MSG_H */ |