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 */
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