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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 | |
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_TLV_H | |
24 | #define PIM_TLV_H | |
25 | ||
26 | #include <zebra.h> | |
27 | ||
28 | #include "config.h" | |
29 | #include "if.h" | |
30 | #include "linklist.h" | |
31 | ||
32 | #ifdef HAVE_INTTYPES_H | |
33 | #include <inttypes.h> | |
34 | #endif /* HAVE_INTTYPES_H */ | |
35 | ||
36 | #define PIM_MSG_OPTION_TYPE_HOLDTIME (1) | |
37 | #define PIM_MSG_OPTION_TYPE_LAN_PRUNE_DELAY (2) | |
38 | #define PIM_MSG_OPTION_TYPE_DR_PRIORITY (19) | |
39 | #define PIM_MSG_OPTION_TYPE_GENERATION_ID (20) | |
40 | #define PIM_MSG_OPTION_TYPE_DM_STATE_REFRESH (21) | |
41 | #define PIM_MSG_OPTION_TYPE_ADDRESS_LIST (24) | |
42 | ||
43 | typedef uint32_t pim_hello_options; | |
44 | #define PIM_OPTION_MASK_HOLDTIME (1 << 0) /* recv holdtime */ | |
45 | #define PIM_OPTION_MASK_LAN_PRUNE_DELAY (1 << 1) /* recv lan_prune_delay */ | |
46 | #define PIM_OPTION_MASK_DR_PRIORITY (1 << 2) /* recv dr_priority */ | |
47 | #define PIM_OPTION_MASK_GENERATION_ID (1 << 3) /* recv generation_id */ | |
48 | #define PIM_OPTION_MASK_ADDRESS_LIST (1 << 4) /* recv secondary address list */ | |
49 | #define PIM_OPTION_MASK_CAN_DISABLE_JOIN_SUPPRESSION (1 << 5) /* T bit value (valid if recv lan_prune_delay) */ | |
50 | ||
51 | #define PIM_RPT_BIT_MASK (1 << 0) | |
52 | #define PIM_WILDCARD_BIT_MASK (1 << 1) | |
53 | ||
54 | #define PIM_OPTION_SET(options, option_mask) ((options) |= (option_mask)) | |
55 | #define PIM_OPTION_UNSET(options, option_mask) ((options) &= ~(option_mask)) | |
56 | #define PIM_OPTION_IS_SET(options, option_mask) ((options) & (option_mask)) | |
57 | ||
58 | #define PIM_TLV_GET_UINT16(buf) ntohs(*(const uint16_t *)(buf)) | |
59 | #define PIM_TLV_GET_UINT32(buf) ntohl(*(const uint32_t *)(buf)) | |
60 | #define PIM_TLV_GET_TYPE(buf) PIM_TLV_GET_UINT16(buf) | |
61 | #define PIM_TLV_GET_LENGTH(buf) PIM_TLV_GET_UINT16(buf) | |
62 | #define PIM_TLV_GET_HOLDTIME(buf) PIM_TLV_GET_UINT16(buf) | |
63 | #define PIM_TLV_GET_PROPAGATION_DELAY(buf) (PIM_TLV_GET_UINT16(buf) & 0x7FFF) | |
64 | #define PIM_TLV_GET_OVERRIDE_INTERVAL(buf) PIM_TLV_GET_UINT16(buf) | |
65 | #define PIM_TLV_GET_CAN_DISABLE_JOIN_SUPPRESSION(buf) ((*(const uint8_t *)(buf)) & 0x80) | |
66 | #define PIM_TLV_GET_DR_PRIORITY(buf) PIM_TLV_GET_UINT32(buf) | |
67 | #define PIM_TLV_GET_GENERATION_ID(buf) PIM_TLV_GET_UINT32(buf) | |
68 | ||
69 | #define PIM_TLV_TYPE_SIZE (2) | |
70 | #define PIM_TLV_LENGTH_SIZE (2) | |
71 | #define PIM_TLV_MIN_SIZE (PIM_TLV_TYPE_SIZE + PIM_TLV_LENGTH_SIZE) | |
72 | #define PIM_TLV_OPTION_SIZE(option_len) (PIM_TLV_MIN_SIZE + (option_len)) | |
73 | ||
74 | uint8_t *pim_tlv_append_uint16(uint8_t *buf, | |
75 | const uint8_t *buf_pastend, | |
76 | uint16_t option_type, | |
77 | uint16_t option_value); | |
78 | uint8_t *pim_tlv_append_2uint16(uint8_t *buf, | |
79 | const uint8_t *buf_pastend, | |
80 | uint16_t option_type, | |
81 | uint16_t option_value1, | |
82 | uint16_t option_value2); | |
83 | uint8_t *pim_tlv_append_uint32(uint8_t *buf, | |
84 | const uint8_t *buf_pastend, | |
85 | uint16_t option_type, | |
86 | uint32_t option_value); | |
87 | uint8_t *pim_tlv_append_addrlist_ucast(uint8_t *buf, | |
88 | const uint8_t *buf_pastend, | |
89 | struct list *ifconnected); | |
90 | ||
91 | int pim_tlv_parse_holdtime(const char *ifname, struct in_addr src_addr, | |
92 | pim_hello_options *hello_options, | |
93 | uint16_t *hello_option_holdtime, | |
94 | uint16_t option_len, | |
95 | const uint8_t *tlv_curr); | |
96 | int pim_tlv_parse_lan_prune_delay(const char *ifname, struct in_addr src_addr, | |
97 | pim_hello_options *hello_options, | |
98 | uint16_t *hello_option_propagation_delay, | |
99 | uint16_t *hello_option_override_interval, | |
100 | uint16_t option_len, | |
101 | const uint8_t *tlv_curr); | |
102 | int pim_tlv_parse_dr_priority(const char *ifname, struct in_addr src_addr, | |
103 | pim_hello_options *hello_options, | |
104 | uint32_t *hello_option_dr_priority, | |
105 | uint16_t option_len, | |
106 | const uint8_t *tlv_curr); | |
107 | int pim_tlv_parse_generation_id(const char *ifname, struct in_addr src_addr, | |
108 | pim_hello_options *hello_options, | |
109 | uint32_t *hello_option_generation_id, | |
110 | uint16_t option_len, | |
111 | const uint8_t *tlv_curr); | |
112 | int pim_tlv_parse_addr_list(const char *ifname, struct in_addr src_addr, | |
113 | pim_hello_options *hello_options, | |
114 | struct list **hello_option_addr_list, | |
115 | uint16_t option_len, | |
116 | const uint8_t *tlv_curr); | |
117 | ||
118 | int pim_parse_addr_ucast(const char *ifname, struct in_addr src_addr, | |
119 | struct prefix *p, | |
120 | const uint8_t *buf, | |
121 | int buf_size); | |
122 | int pim_parse_addr_group(const char *ifname, struct in_addr src_addr, | |
123 | struct prefix *p, | |
124 | const uint8_t *buf, | |
125 | int buf_size); | |
126 | int pim_parse_addr_source(const char *ifname, | |
127 | struct in_addr src_addr, | |
128 | struct prefix *p, | |
129 | uint8_t *flags, | |
130 | const uint8_t *buf, | |
131 | int buf_size); | |
132 | ||
133 | #endif /* PIM_TLV_H */ |