summaryrefslogtreecommitdiffstats
path: root/src/vnet/ip/icmp46_packet.h
blob: 08e73f6cd7d7cca71ee7820b30abe3125a0569fa (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
/*
 * Copyright (c) 2015 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/*
 * icmp46_packet.h: ip4/ip6 icmp packet format
 *
 * Copyright (c) 2008 Eliot Dresselhaus
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef included_vnet_icmp46_packet_h
#define included_vnet_icmp46_packet_h

#include <vnet/ethernet/packet.h>
#include <vnet/ip/ip6_packet.h>

#define foreach_icmp4_type			\
  _ (0, echo_reply)				\
  _ (3, destination_unreachable)		\
  _ (4, source_quench)				\
  _ (5, redirect)				\
  _ (6, alternate_host_address)			\
  _ (8, echo_request)				\
  _ (9, router_advertisement)			\
  _ (10, router_solicitation)			\
  _ (11, time_exceeded)				\
  _ (12, parameter_problem)			\
  _ (13, timestamp_request)			\
  _ (14, timestamp_reply)			\
  _ (15, information_request)			\
  _ (16, information_reply)			\
  _ (17, address_mask_request)			\
  _ (18, address_mask_reply)			\
  _ (30, traceroute)				\
  _ (31, datagram_conversion_error)		\
  _ (32, mobile_host_redirect)			\
  _ (33, ip6_where_are_you)			\
  _ (34, ip6_i_am_here)				\
  _ (35, mobile_registration_request)		\
  _ (36, mobile_registration_reply)		\
  _ (37, domain_name_request)			\
  _ (38, domain_name_reply)			\
  _ (39, skip)					\
  _ (40, photuris)

#define icmp_no_code 0

#define foreach_icmp4_code						\
  _ (destination_unreachable, 0, destination_unreachable_net)		\
  _ (destination_unreachable, 1, destination_unreachable_host)		\
  _ (destination_unreachable, 2, protocol_unreachable)			\
  _ (destination_unreachable, 3, port_unreachable)			\
  _ (destination_unreachable, 4, fragmentation_needed_and_dont_fragment_set) \
  _ (destination_unreachable, 5, source_route_failed)			\
  _ (destination_unreachable, 6, destination_network_unknown)		\
  _ (destination_unreachable, 7, destination_host_unknown)		\
  _ (destination_unreachable, 8, source_host_isolated)			\
  _ (destination_unreachable, 9, network_administratively_prohibited)	\
  _ (destination_unreachable, 10, host_administratively_prohibited)	\
  _ (destination_unreachable, 11, network_unreachable_for_type_of_service) \
  _ (destination_unreachable, 12, host_unreachable_for_type_of_service)	\
  _ (destination_unreachable, 13, communication_administratively_prohibited) \
  _ (destination_unreachable, 14, host_precedence_violation)		\
  _ (destination_unreachable, 15, precedence_cutoff_in_effect)		\
  _ (redirect, 0, network_redirect)					\
  _ (redirect, 1, host_redirect)					\
  _ (redirect, 2, type_of_service_and_network_redirect)			\
  _ (redirect, 3, type_of_service_and_host_redirect)			\
  _ (router_advertisement, 0, normal_router_advertisement)		\
  _ (router_advertisement, 16, does_not_route_common_traffic)		\
  _ (time_exceeded, 0, ttl_exceeded_in_transit)				\
  _ (time_exceeded, 1, fragment_reassembly_time_exceeded)		\
  _ (parameter_problem, 0, pointer_indicates_error)			\
  _ (parameter_problem, 1, missing_required_option)			\
  _ (parameter_problem, 2, bad_length)

/* ICMPv6 */
#define foreach_icmp6_type			\
  _ (1, destination_unreachable)		\
  _ (2, packet_too_big)				\
  _ (3, time_exceeded)				\
  _ (4, parameter_problem)			\
  _ (128, echo_request)				\
  _ (129, echo_reply)				\
  _ (130, multicast_listener_request)		\
  _ (131, multicast_listener_report)		\
  _ (132, multicast_listener_done)		\
  _ (133, router_solicitation)			\
  _ (134, router_advertisement)			\
  _ (135, neighbor_solicitation)		\
  _ (136, neighbor_advertisement)		\
  _ (137, redirect)				\
  _ (138, router_renumbering)			\
  _ (139, node_information_request)		\
  _ (140, node_information_response)		\
  _ (141, inverse_neighbor_solicitation)	\
  _ (142, inverse_neighbor_advertisement)	\
  _ (143, multicast_listener_report_v2)		\
  _ (144, home_agent_address_discovery_request)	\
  _ (145, home_agent_address_discovery_reply)	\
  _ (146, mobile_prefix_solicitation)		\
  _ (147, mobile_prefix_advertisement)		\
  _ (148, certification_path_solicitation)	\
  _ (149, certification_path_advertisement)	\
  _ (151, multicast_router_advertisement)	\
  _ (152, multicast_router_solicitation)	\
  _ (153, multicast_router_termination)		\
  _ (154, fmipv6_messages)

#define foreach_icmp6_code						\
  _ (destination_unreachable, 0, no_route_to_destination)		\
  _ (destination_unreachable, 1, destination_administratively_prohibited) \
  _ (destination_unreachable, 2, beyond_scope_of_source_address)	\
  _ (destination_unreachable, 3, address_unreachable)			\
  _ (destination_unreachable, 4, port_unreachable)			\
  _ (destination_unreachable, 5, source_address_failed_policy)		\
  _ (destination_unreachable, 6, reject_route_to_destination)		\
  _ (time_exceeded, 0, ttl_exceeded_in_transit)				\
  _ (time_exceeded, 1, fragment_reassembly_time_exceeded)		\
  _ (parameter_problem, 0, erroneous_header_field)			\
  _ (parameter_problem, 1, unrecognized_next_header)			\
  _ (parameter_problem, 2, unrecognized_option)				\
  _ (parameter_problem, 3, first_fragment_has_incomplete_header_chain)  \
  _ (router_renumbering, 0, command)					\
  _ (router_renumbering, 1, result)					\
  _ (node_information_request, 0, data_contains_ip6_address)		\
  _ (node_information_request, 1, data_contains_name)			\
  _ (node_information_request, 2, data_contains_ip4_address)		\
  _ (node_information_response, 0, success)				\
  _ (node_information_response, 1, failed)				\
  _ (node_information_response, 2, unknown_request)

typedef enum
{
#define _(n,f) ICMP4_##f = n,
  foreach_icmp4_type
#undef _
} icmp4_type_t;

typedef enum
{
#define _(t,n,f) ICMP4_##t##_##f = n,
  foreach_icmp4_code
#undef _
} icmp4_code_t;

typedef enum
{
#define _(n,f) ICMP6_##f = n,
  foreach_icmp6_type
#undef _
} icmp6_type_t;

typedef enum
{
#define _(t,n,f) ICMP6_##t##_##f = n,
  foreach_icmp6_code
#undef _
} icmp6_code_t;

typedef CLIB_PACKED (struct
{
    u8 type;
    u8 code;
    /* IP checksum of icmp header plus data which follows. */
    u16 checksum;
}) icmp46_header_t;

/* ip6 neighbor discovery */
#define foreach_icmp6_neighbor_discovery_option	\
  _ (1, source_link_layer_address)		\
  _ (2, target_link_layer_address)		\
  _ (3, prefix_information)			\
  _ (4, redirected_header)			\
  _ (5, mtu)					\
  _ (6, nbma_shortcut_limit)			\
  _ (7, advertisement_interval)			\
  _ (8, home_agent_information)			\
  _ (9, source_address_list)			\
  _ (10, target_address_list)			\
  _ (11, cryptographically_generated_address)	\
  _ (12, rsa_signature)				\
  _ (13, timestamp)				\
  _ (14, nonce)					\
  _ (15, trust_anchor)				\
  _ (16, certificate)				\
  _ (17, ip_address_and_prefix)			\
  _ (18, new_router_prefix_information)		\
  _ (19, mobile_link_layer_address)		\
  _ (20, neighbor_advertisement_acknowledgment)	\
  _ (23, map)					\
  _ (24, route_information)			\
  _ (25, recursive_dns_server)			\
  _ (26, ra_flags_extension)			\
  _ (27, handover_key_request)			\
  _ (28, handover_key_reply)			\
  _ (29, handover_assist_information)		\
  _ (30, mobile_node_identifier)		\
  _ (31, dns_search_list)			\
  _ (138, card_request)				\
  _ (139, card_reply)

typedef enum icmp6_neighbor_discovery_option_type
{
#define _(n,f) ICMP6_NEIGHBOR_DISCOVERY_OPTION_##f = n,
  foreach_icmp6_neighbor_discovery_option
#undef _
} icmp6_neighbor_discovery_option_type_t;

typedef CLIB_PACKED (struct
{
    /* Option type. */
    u8 type;
    /* Length of this header plus option data in 8 byte units. */
    u8 n_data_u64s;
    /* Option data follows. */
    u8 data[0];
}) icmp6_neighbor_discovery_option_header_t;

typedef CLIB_PACKED (struct
{
    icmp6_neighbor_discovery_option_header_t header;
    u8 dst_address_length;
    u8 flags;
#define ICMP6_NEIGHBOR_DISCOVERY_PREFIX_INFORMATION_FLAG_ON_LINK (1 << 7)
#define ICMP6_NEIGHBOR_DISCOVERY_PREFIX_INFORMATION_AUTO (1 << 6)
    u32 valid_time;
    u32 preferred_time;
    u32 unused; ip6_address_t dst_address;
}) icmp6_neighbor_discovery_prefix_information_option_t;

typedef CLIB_PACKED (struct
{
    u8 type;
    u8 aux_data_len_u32s;
    u16 num_sources;
    ip6_address_t mcast_addr; ip6_address_t source_addr[0];
}) icmp6_multicast_address_record_t;

typedef CLIB_PACKED (struct
{
    icmp6_neighbor_discovery_option_header_t header;
    u8 reserved[6];
    /* IP6 header plus payload follows. */
    u8 data[0];
}) icmp6_neighbor_discovery_redirected_header_option_t;

typedef CLIB_PACKED (struct
{
    icmp6_neighbor_discovery_option_header_t header;
    u16 unused; u32 mtu;
}) icmp6_neighbor_discovery_mtu_option_t;

typedef CLIB_PACKED (struct
{
    icmp6_neighbor_discovery_option_header_t header;
    u8 ethernet_address[6];
}) icmp6_neighbor_discovery_ethernet_link_layer_address_option_t;

typedef CLIB_PACKED (struct
{
    icmp6_neighbor_discovery_option_header_t header;
    u8 max_l2_address[6 + 8];
}) icmp6_neighbor_discovery_max_link_layer_address_option_t;

/* Generic neighbor discover header.  Used for router solicitations,
   etc. */
typedef CLIB_PACKED (struct
{
    icmp46_header_t icmp; u32 reserved_must_be_zero;
}) icmp6_neighbor_discovery_header_t;

/* Router advertisement packet formats. */
typedef CLIB_PACKED (struct
{
    icmp46_header_t icmp;
    /* Current hop limit to use for outgoing packets. */
    u8 current_hop_limit;
    u8 flags;
#define ICMP6_ROUTER_DISCOVERY_FLAG_ADDRESS_CONFIG_VIA_DHCP (1 << 7)
#define ICMP6_ROUTER_DISCOVERY_FLAG_OTHER_CONFIG_VIA_DHCP (1 << 6)
    /* Zero means unspecified. */
    u16 router_lifetime_in_sec;
    /* Zero means unspecified. */
    u32 neighbor_reachable_time_in_msec;
    /* Zero means unspecified. */
    u32
    time_in_msec_between_retransmitted_neighbor_solicitations;
    /* Options that may follow: source_link_layer_address, mtu, prefix_information. */
}) icmp6_router_advertisement_header_t;

/* Neighbor solicitation/advertisement header. */
typedef CLIB_PACKED (struct
{
    icmp46_header_t icmp;
    /* Zero for solicitation; flags for advertisement. */
    u32 advertisement_flags;
    /* Set when sent by a router. */
#define ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_ROUTER (1 << 31)
    /* Set when response to solicitation. */
#define ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED (1 << 30)
#define ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE (1 << 29)
    ip6_address_t target_address;
    /* Options that may follow: source_link_layer_address
       (for solicitation) target_link_layer_address (for advertisement). */
}) icmp6_neighbor_solicitation_or_advertisement_header_t;

typedef CLIB_PACKED (struct
{
    icmp46_header_t icmp;
    u32 reserved_must_be_zero;
    /* Better next hop to use for given destination. */
    ip6_address_t better_next_hop_address;
    ip6_address_t dst_address;
    /* Options that may follow: target_link_layer_address,
       redirected_header. */
}) icmp6_redirect_header_t;

/* Solicitation/advertisement packet format for ethernet. */
typedef CLIB_PACKED (struct
{
    ip6_header_t ip;
    icmp6_neighbor_solicitation_or_advertisement_header_t
    neighbor;
    icmp6_neighbor_discovery_ethernet_link_layer_address_option_t
    link_layer_option;
}) icmp6_neighbor_solicitation_header_t;

#endif /* included_vnet_icmp46_packet_h */