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acddc0ed 1// SPDX-License-Identifier: ISC
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2/* $OpenBSD$ */
3
4/*
5 * Copyright (c) 2013, 2016 Renato Westphal <renato@openbsd.org>
6 * Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
7 * Copyright (c) 2004, 2005, 2008 Esben Norby <norby@openbsd.org>
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8 */
9
10/* LDP protocol definitions */
11
12#ifndef _LDP_H_
13#define _LDP_H_
14
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15/* misc */
16#define LDP_VERSION 1
17#define LDP_PORT 646
18#define LDP_MAX_LEN 4096
19
20/* All Routers on this Subnet group multicast addresses */
21#define AllRouters_v4 "224.0.0.2"
22#define AllRouters_v6 "ff02::2"
23
24#define LINK_DFLT_HOLDTIME 15
25#define TARGETED_DFLT_HOLDTIME 45
26#define MIN_HOLDTIME 3
27#define MAX_HOLDTIME 0xffff
28#define INFINITE_HOLDTIME 0xffff
29
30#define DEFAULT_KEEPALIVE 180
31#define MIN_KEEPALIVE 3
32#define MAX_KEEPALIVE 0xffff
33#define KEEPALIVE_PER_PERIOD 3
34#define INIT_FSM_TIMEOUT 15
35
36#define DEFAULT_HELLO_INTERVAL 5
37#define MIN_HELLO_INTERVAL 1
38#define MAX_HELLO_INTERVAL 0xffff
39
40#define INIT_DELAY_TMR 15
41#define MAX_DELAY_TMR 120
42
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43#define DFLT_WAIT_FOR_SYNC 10
44
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45#define MIN_PWID_ID 1
46#define MAX_PWID_ID 0xffffffff
47
48#define DEFAULT_L2VPN_MTU 1500
49#define MIN_L2VPN_MTU 512
50#define MAX_L2VPN_MTU 0xffff
51
52/* LDP message types */
53#define MSG_TYPE_NOTIFICATION 0x0001
54#define MSG_TYPE_HELLO 0x0100
55#define MSG_TYPE_INIT 0x0200
56#define MSG_TYPE_KEEPALIVE 0x0201
8819fc38 57#define MSG_TYPE_CAPABILITY 0x0202 /* RFC 5561 */
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58#define MSG_TYPE_ADDR 0x0300
59#define MSG_TYPE_ADDRWITHDRAW 0x0301
60#define MSG_TYPE_LABELMAPPING 0x0400
61#define MSG_TYPE_LABELREQUEST 0x0401
62#define MSG_TYPE_LABELWITHDRAW 0x0402
63#define MSG_TYPE_LABELRELEASE 0x0403
64#define MSG_TYPE_LABELABORTREQ 0x0404
65
66/* LDP TLV types */
67#define TLV_TYPE_FEC 0x0100
68#define TLV_TYPE_ADDRLIST 0x0101
69#define TLV_TYPE_HOPCOUNT 0x0103
70#define TLV_TYPE_PATHVECTOR 0x0104
71#define TLV_TYPE_GENERICLABEL 0x0200
72#define TLV_TYPE_ATMLABEL 0x0201
73#define TLV_TYPE_FRLABEL 0x0202
74#define TLV_TYPE_STATUS 0x0300
75#define TLV_TYPE_EXTSTATUS 0x0301
76#define TLV_TYPE_RETURNEDPDU 0x0302
77#define TLV_TYPE_RETURNEDMSG 0x0303
78#define TLV_TYPE_COMMONHELLO 0x0400
79#define TLV_TYPE_IPV4TRANSADDR 0x0401
80#define TLV_TYPE_CONFIG 0x0402
81#define TLV_TYPE_IPV6TRANSADDR 0x0403
82#define TLV_TYPE_COMMONSESSION 0x0500
83#define TLV_TYPE_ATMSESSIONPAR 0x0501
84#define TLV_TYPE_FRSESSION 0x0502
85#define TLV_TYPE_LABELREQUEST 0x0600
86/* RFC 4447 */
26519d8c 87#define TLV_TYPE_MAC_LIST 0x8404
357db527 88#define TLV_TYPE_PW_STATUS 0x896A
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89#define TLV_TYPE_PW_IF_PARAM 0x096B
90#define TLV_TYPE_PW_GROUP_ID 0x096C
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91/* RFC 5561 */
92#define TLV_TYPE_RETURNED_TLVS 0x8304
93#define TLV_TYPE_DYNAMIC_CAP 0x8506
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94/* RFC 5918 */
95#define TLV_TYPE_TWCARD_CAP 0x850B
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96/* RFC 5919 */
97#define TLV_TYPE_UNOTIF_CAP 0x8603
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98/* RFC 7552 */
99#define TLV_TYPE_DUALSTACK 0x8701
100
101/* LDP header */
102struct ldp_hdr {
103 uint16_t version;
104 uint16_t length;
105 uint32_t lsr_id;
106 uint16_t lspace_id;
eac6e3f0 107} __attribute__ ((packed));
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108
109#define LDP_HDR_SIZE 10 /* actual size of the LDP header */
110#define LDP_HDR_PDU_LEN 6 /* minimum "PDU Length" */
111#define LDP_HDR_DEAD_LEN 4
112
113/* TLV record */
114struct tlv {
115 uint16_t type;
116 uint16_t length;
117};
118#define TLV_HDR_SIZE 4
119
120struct ldp_msg {
121 uint16_t type;
122 uint16_t length;
123 uint32_t id;
124 /* Mandatory Parameters */
125 /* Optional Parameters */
eac6e3f0 126} __attribute__ ((packed));
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127
128#define LDP_MSG_SIZE 8 /* minimum size of LDP message */
129#define LDP_MSG_LEN 4 /* minimum "Message Length" */
130#define LDP_MSG_DEAD_LEN 4
131
132#define UNKNOWN_FLAG 0x8000
133#define FORWARD_FLAG 0xc000
134
135struct hello_prms_tlv {
136 uint16_t type;
137 uint16_t length;
138 uint16_t holdtime;
139 uint16_t flags;
140};
141#define F_HELLO_TARGETED 0x8000
142#define F_HELLO_REQ_TARG 0x4000
143#define F_HELLO_GTSM 0x2000
144
145struct hello_prms_opt4_tlv {
146 uint16_t type;
147 uint16_t length;
148 uint32_t value;
149};
150
151struct hello_prms_opt16_tlv {
152 uint16_t type;
153 uint16_t length;
154 uint8_t value[16];
155};
156
157#define DUAL_STACK_LDPOV4 4
158#define DUAL_STACK_LDPOV6 6
159
160#define F_HELLO_TLV_RCVD_ADDR 0x01
161#define F_HELLO_TLV_RCVD_CONF 0x02
162#define F_HELLO_TLV_RCVD_DS 0x04
163
164#define S_SUCCESS 0x00000000
165#define S_BAD_LDP_ID 0x80000001
166#define S_BAD_PROTO_VER 0x80000002
167#define S_BAD_PDU_LEN 0x80000003
168#define S_UNKNOWN_MSG 0x00000004
169#define S_BAD_MSG_LEN 0x80000005
170#define S_UNKNOWN_TLV 0x00000006
171#define S_BAD_TLV_LEN 0x80000007
172#define S_BAD_TLV_VAL 0x80000008
173#define S_HOLDTIME_EXP 0x80000009
174#define S_SHUTDOWN 0x8000000A
175#define S_LOOP_DETECTED 0x0000000B
176#define S_UNKNOWN_FEC 0x0000000C
177#define S_NO_ROUTE 0x0000000D
178#define S_NO_LABEL_RES 0x0000000E
179#define S_AVAILABLE 0x0000000F
180#define S_NO_HELLO 0x80000010
181#define S_PARM_ADV_MODE 0x80000011
182#define S_MAX_PDU_LEN 0x80000012
183#define S_PARM_L_RANGE 0x80000013
184#define S_KEEPALIVE_TMR 0x80000014
185#define S_LAB_REQ_ABRT 0x00000015
186#define S_MISS_MSG 0x00000016
187#define S_UNSUP_ADDR 0x00000017
188#define S_KEEPALIVE_BAD 0x80000018
189#define S_INTERN_ERR 0x80000019
190/* RFC 4447 */
191#define S_ILLEGAL_CBIT 0x00000024
192#define S_WRONG_CBIT 0x00000025
193#define S_INCPT_BITRATE 0x00000026
194#define S_CEP_MISCONF 0x00000027
195#define S_PW_STATUS 0x00000028
196#define S_UNASSIGN_TAI 0x00000029
197#define S_MISCONF_ERR 0x0000002A
198#define S_WITHDRAW_MTHD 0x0000002B
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199/* RFC 5561 */
200#define S_UNSSUPORTDCAP 0x0000002E
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201/* RFC 5919 */
202#define S_ENDOFLIB 0x0000002F
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203/* RFC 7552 */
204#define S_TRANS_MISMTCH 0x80000032
205#define S_DS_NONCMPLNCE 0x80000033
206
207struct sess_prms_tlv {
208 uint16_t type;
209 uint16_t length;
210 uint16_t proto_version;
211 uint16_t keepalive_time;
212 uint8_t reserved;
213 uint8_t pvlim;
214 uint16_t max_pdu_len;
215 uint32_t lsr_id;
216 uint16_t lspace_id;
eac6e3f0 217} __attribute__ ((packed));
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218
219#define SESS_PRMS_SIZE 18
220#define SESS_PRMS_LEN 14
221
222struct status_tlv {
223 uint16_t type;
224 uint16_t length;
225 uint32_t status_code;
226 uint32_t msg_id;
227 uint16_t msg_type;
eac6e3f0 228} __attribute__ ((packed));
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229
230#define STATUS_SIZE 14
231#define STATUS_TLV_LEN 10
232#define STATUS_FATAL 0x80000000
233
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234struct capability_tlv {
235 uint16_t type;
236 uint16_t length;
237 uint8_t reserved;
238};
239#define STATE_BIT 0x80
240
241#define F_CAP_TLV_RCVD_DYNAMIC 0x01
d4afb819 242#define F_CAP_TLV_RCVD_TWCARD 0x02
257799cd 243#define F_CAP_TLV_RCVD_UNOTIF 0x04
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244
245#define CAP_TLV_DYNAMIC_SIZE 5
246#define CAP_TLV_DYNAMIC_LEN 1
247
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248#define CAP_TLV_TWCARD_SIZE 5
249#define CAP_TLV_TWCARD_LEN 1
250
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251#define CAP_TLV_UNOTIF_SIZE 5
252#define CAP_TLV_UNOTIF_LEN 1
253
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254#define AF_IPV4 0x1
255#define AF_IPV6 0x2
256
257struct address_list_tlv {
258 uint16_t type;
259 uint16_t length;
260 uint16_t family;
261 /* address entries */
eac6e3f0 262} __attribute__ ((packed));
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263
264#define ADDR_LIST_SIZE 6
265
266#define FEC_ELM_WCARD_LEN 1
267#define FEC_ELM_PREFIX_MIN_LEN 4
268#define FEC_PWID_ELM_MIN_LEN 8
05aac414 269#define FEC_PWID_SIZE 4
d4afb819 270#define FEC_ELM_TWCARD_MIN_LEN 3
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271
272#define MAP_TYPE_WILDCARD 0x01
273#define MAP_TYPE_PREFIX 0x02
d4afb819 274#define MAP_TYPE_TYPED_WCARD 0x05
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275#define MAP_TYPE_PWID 0x80
276#define MAP_TYPE_GENPWID 0x81
277
278#define CONTROL_WORD_FLAG 0x8000
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279#define DEFAULT_PW_TYPE PW_TYPE_ETHERNET
280
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281#define PW_TWCARD_RESERVED_BIT 0x8000
282
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283/* RFC 4447 Sub-TLV record */
284struct subtlv {
285 uint8_t type;
286 uint8_t length;
287};
288#define SUBTLV_HDR_SIZE 2
289
290#define SUBTLV_IFMTU 0x01
291#define SUBTLV_VLANID 0x06
292
293#define FEC_SUBTLV_IFMTU_SIZE 4
294#define FEC_SUBTLV_VLANID_SIZE 4
295
296struct label_tlv {
297 uint16_t type;
298 uint16_t length;
299 uint32_t label;
300};
301#define LABEL_TLV_SIZE 8
302#define LABEL_TLV_LEN 4
303
304struct reqid_tlv {
305 uint16_t type;
306 uint16_t length;
307 uint32_t reqid;
308};
309#define REQID_TLV_SIZE 8
310#define REQID_TLV_LEN 4
311
312struct pw_status_tlv {
313 uint16_t type;
314 uint16_t length;
315 uint32_t value;
316};
317#define PW_STATUS_TLV_SIZE 8
318#define PW_STATUS_TLV_LEN 4
319
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320#define NO_LABEL UINT32_MAX
321
322#endif /* !_LDP_H_ */