ndp.h
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1 /*
2  * Copyright (C) 2015 Martine Lenders <mlenders@inf.fu-berlin.de>
3  *
4  * This file is subject to the terms and conditions of the GNU Lesser
5  * General Public License v2.1. See the file LICENSE in the top level
6  * directory for more details.
7  */
8 
20 #ifndef NET_NDP_H
21 #define NET_NDP_H
22 
23 #include <stdint.h>
24 
25 #include "byteorder.h"
26 #include "net/ipv6/addr.h"
27 
28 #ifdef __cplusplus
29 extern "C" {
30 #endif
31 
37 #define NDP_RTR_ADV_FLAGS_MASK (0xc0)
38 #define NDP_RTR_ADV_FLAGS_M (0x80)
39 #define NDP_RTR_ADV_FLAGS_O (0x40)
49 #define NDP_RTR_ADV_CUR_HL_UNSPEC (0)
55 #define NDP_RTR_ADV_LTIME_SEC_MAX (9000)
56 
61 #define NDP_NBR_ADV_LTIME_NOT_DR (0)
62 
63 #define NDP_NBR_ADV_REACH_TIME (0)
64 #define NDP_NBR_ADV_RETRANS_TIMER (0)
72 #define NDP_NBR_ADV_FLAGS_MASK (0xe0)
73 #define NDP_NBR_ADV_FLAGS_R (0x80)
74 #define NDP_NBR_ADV_FLAGS_S (0x40)
75 #define NDP_NBR_ADV_FLAGS_O (0x20)
86 #define NDP_OPT_SL2A (1)
87 #define NDP_OPT_TL2A (2)
88 #define NDP_OPT_PI (3)
89 #define NDP_OPT_RH (4)
90 #define NDP_OPT_MTU (5)
91 #define NDP_OPT_RI (24)
92 #define NDP_OPT_RDNSS (25)
93 #define NDP_OPT_AR (33)
94 #define NDP_OPT_6CTX (34)
95 #define NDP_OPT_ABR (35)
102 #define NDP_OPT_PI_FLAGS_MASK (0xc0)
103 #define NDP_OPT_PI_FLAGS_L (0x80)
104 #define NDP_OPT_PI_FLAGS_A (0x40)
111 #define NDP_OPT_RI_FLAGS_MASK (0x18)
112 #define NDP_OPT_RI_FLAGS_PRF_NONE (0x10)
113 #define NDP_OPT_RI_FLAGS_PRF_NEG (0x18)
114 #define NDP_OPT_RI_FLAGS_PRF_ZERO (0x0)
115 #define NDP_OPT_RI_FLAGS_PRF_POS (0x8)
123 #define NDP_OPT_PI_VALID_LTIME_INF (UINT32_MAX)
124 #define NDP_OPT_PI_PREF_LTIME_INF (UINT32_MAX)
132 #define NDP_OPT_PI_LEN (4U)
133 #define NDP_OPT_MTU_LEN (1U)
140 #define NDP_OPT_RDNSS_MIN_LEN (3U)
141 
148 #define NDP_MAX_INIT_RA_INTERVAL (16000U)
149 #define NDP_MAX_INIT_RA_NUMOF (3U)
150 #define NDP_MAX_FIN_RA_NUMOF (3U)
151 #define NDP_MIN_MS_DELAY_BETWEEN_RAS (3000U)
152 #define NDP_MAX_RA_DELAY (500U)
153 #define NDP_MAX_RA_INTERVAL_MS (600000U)
154 #define NDP_MIN_RA_INTERVAL_MS (198000U)
155 #define NDP_RTR_LTIME_SEC (1800U)
163 #define NDP_MAX_RS_MS_DELAY (1000U)
164 #define NDP_RS_MS_INTERVAL (4000U)
165 #define NDP_MAX_RS_NUMOF (3U)
173 #define NDP_MAX_MC_SOL_NUMOF (3U)
174 #define NDP_MAX_UC_SOL_NUMOF (3U)
183 #define NDP_DAD_TRANSMIT_NUMOF (1U)
184 #define NDP_MAX_ANYCAST_MS_DELAY (1000U)
185 #define NDP_MAX_NA_NUMOF (3U)
186 #define NDP_REACH_MS (30000U)
187 #define NDP_RETRANS_TIMER_MS (1000U)
193 #define NDP_MAX_RETRANS_TIMER_MS (60000U)
194 
202 #define NDP_MAX_NS_NUMOF (17U)
203 #define NDP_DELAY_FIRST_PROBE_MS (5000U)
204 #define NDP_MIN_RANDOM_FACTOR (500U)
205 #define NDP_MAX_RANDOM_FACTOR (1500U)
218 #define NDP_HOP_LIMIT (255U)
219 
226 typedef struct __attribute__((packed)) {
227  uint8_t type;
228  uint8_t code;
231 } ndp_rtr_sol_t;
232 
239 typedef struct __attribute__((packed)) {
240  uint8_t type;
241  uint8_t code;
243  uint8_t cur_hl;
244  uint8_t flags;
248 } ndp_rtr_adv_t;
249 
256 typedef struct __attribute__((packed)) {
257  uint8_t type;
258  uint8_t code;
262 } ndp_nbr_sol_t;
263 
270 typedef struct __attribute__((packed)) {
271  uint8_t type;
272  uint8_t code;
274  uint8_t flags;
275  uint8_t resv[3];
277 } ndp_nbr_adv_t;
278 
285 typedef struct __attribute__((packed)) {
286  uint8_t type;
287  uint8_t code;
293 
298 typedef struct __attribute__((packed)) {
299  uint8_t type;
300  uint8_t len;
301 } ndp_opt_t;
302 
303 /* XXX: slla and tlla are just ndp_opt_t with variable link layer address
304  * appended */
305 
312 typedef struct __attribute__((packed)) {
313  uint8_t type;
314  uint8_t len;
315  uint8_t prefix_len;
316  uint8_t flags;
321 } ndp_opt_pi_t;
322 
329 typedef struct __attribute__((packed)) {
330  uint8_t type;
331  uint8_t len;
332  uint8_t prefix_len;
333  uint8_t flags;
336 } ndp_opt_ri_t;
337 
344 typedef struct __attribute__((packed)) {
345  uint8_t type;
346  uint8_t len;
347  uint8_t resv[6];
348 } ndp_opt_rh_t;
349 
356 typedef struct __attribute__((packed)) {
357  uint8_t type;
358  uint8_t len;
361 } ndp_opt_mtu_t;
362 
370 typedef struct __attribute__((packed)) {
371  uint8_t type;
372  uint8_t len;
376 
377 #ifndef __cplusplus
386 typedef struct __attribute__((packed)) {
387  uint8_t type;
388  uint8_t len;
391  ipv6_addr_t addrs[];
393 #endif
394 
395 #ifdef __cplusplus
396 }
397 #endif
398 
399 #endif /* NET_NDP_H */
Functions to work with different byte orders.
Definitions for IPv6 addresses.
Neighbor advertisement message format.
Definition: ndp.h:270
network_uint16_t csum
checksum
Definition: ndp.h:273
ipv6_addr_t tgt
target address
Definition: ndp.h:276
uint8_t code
message code
Definition: ndp.h:272
uint8_t flags
flags
Definition: ndp.h:274
uint8_t type
message type
Definition: ndp.h:271
Neighbor solicitation message format.
Definition: ndp.h:256
uint8_t type
message type
Definition: ndp.h:257
network_uint16_t csum
checksum
Definition: ndp.h:259
network_uint32_t resv
reserved field
Definition: ndp.h:260
uint8_t code
message code
Definition: ndp.h:258
ipv6_addr_t tgt
target address
Definition: ndp.h:261
MTU option format.
Definition: ndp.h:356
uint8_t type
option type
Definition: ndp.h:357
network_uint16_t resv
reserved field
Definition: ndp.h:359
network_uint32_t mtu
MTU.
Definition: ndp.h:360
uint8_t len
length in units of 8 octets
Definition: ndp.h:358
Prefix information option format.
Definition: ndp.h:312
uint8_t flags
flags
Definition: ndp.h:316
uint8_t type
option type
Definition: ndp.h:313
uint8_t prefix_len
prefix length
Definition: ndp.h:315
network_uint32_t pref_ltime
preferred lifetime
Definition: ndp.h:318
network_uint32_t resv
reserved field
Definition: ndp.h:319
network_uint32_t valid_ltime
valid lifetime
Definition: ndp.h:317
uint8_t len
length in units of 8 octets
Definition: ndp.h:314
ipv6_addr_t prefix
prefix
Definition: ndp.h:320
Recursive DNS server option format with payload.
Definition: ndp.h:386
uint8_t type
option type
Definition: ndp.h:387
network_uint16_t resv
reserved field
Definition: ndp.h:389
uint8_t len
length in units of 8 octets
Definition: ndp.h:388
network_uint32_t ltime
lifetime in seconds
Definition: ndp.h:390
Recursive DNS server option format without payload.
Definition: ndp.h:370
uint8_t type
option type
Definition: ndp.h:371
network_uint16_t resv
reserved field
Definition: ndp.h:373
uint8_t len
length in units of 8 octets
Definition: ndp.h:372
network_uint32_t ltime
lifetime in seconds
Definition: ndp.h:374
Redirected header option format.
Definition: ndp.h:344
uint8_t len
length in units of 8 octets
Definition: ndp.h:346
uint8_t type
option type
Definition: ndp.h:345
Route information option format.
Definition: ndp.h:329
uint8_t prefix_len
prefix length
Definition: ndp.h:332
network_uint32_t route_ltime
route lifetime
Definition: ndp.h:334
uint8_t len
length in units of 8 octets
Definition: ndp.h:331
uint8_t type
option type
Definition: ndp.h:330
ipv6_addr_t prefix
prefix
Definition: ndp.h:335
uint8_t flags
flags
Definition: ndp.h:333
General NDP option format.
Definition: ndp.h:298
uint8_t len
length in units of 8 octets
Definition: ndp.h:300
uint8_t type
option type
Definition: ndp.h:299
Redirect message format.
Definition: ndp.h:285
ipv6_addr_t tgt
target address
Definition: ndp.h:290
uint8_t code
message code
Definition: ndp.h:287
uint8_t type
message type
Definition: ndp.h:286
ipv6_addr_t dst
destination address
Definition: ndp.h:291
network_uint32_t resv
reserved field
Definition: ndp.h:289
network_uint16_t csum
checksum
Definition: ndp.h:288
Router advertisement message format.
Definition: ndp.h:239
uint8_t code
message code
Definition: ndp.h:241
uint8_t flags
flags
Definition: ndp.h:244
network_uint32_t reach_time
reachable time
Definition: ndp.h:246
network_uint16_t csum
checksum
Definition: ndp.h:242
uint8_t type
message type
Definition: ndp.h:240
uint8_t cur_hl
current hop limit
Definition: ndp.h:243
network_uint32_t retrans_timer
retransmission timer
Definition: ndp.h:247
network_uint16_t ltime
router lifetime
Definition: ndp.h:245
Router solicitation message format.
Definition: ndp.h:226
network_uint16_t csum
checksum
Definition: ndp.h:229
network_uint32_t resv
reserved field
Definition: ndp.h:230
uint8_t type
message type
Definition: ndp.h:227
uint8_t code
message code
Definition: ndp.h:228
A 16 bit integer in big endian aka network byte order.
Definition: byteorder.h:77
A 32 bit integer in big endian aka network byte order.
Definition: byteorder.h:87
Data type to represent an IPv6 address.
Definition: addr.h:72