2 * Copyright (c) 2015 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 * icmp46_packet.h: ip4/ip6 icmp packet format
18 * Copyright (c) 2008 Eliot Dresselhaus
20 * Permission is hereby granted, free of charge, to any person obtaining
21 * a copy of this software and associated documentation files (the
22 * "Software"), to deal in the Software without restriction, including
23 * without limitation the rights to use, copy, modify, merge, publish,
24 * distribute, sublicense, and/or sell copies of the Software, and to
25 * permit persons to whom the Software is furnished to do so, subject to
26 * the following conditions:
28 * The above copyright notice and this permission notice shall be
29 * included in all copies or substantial portions of the Software.
31 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
32 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
33 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
34 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
35 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
36 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
37 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
40 #ifndef included_vnet_icmp46_packet_h
41 #define included_vnet_icmp46_packet_h
43 #include <vnet/ethernet/packet.h>
44 #include <vnet/ip/ip6_packet.h>
46 #define foreach_icmp4_type \
48 _ (3, destination_unreachable) \
49 _ (4, source_quench) \
51 _ (6, alternate_host_address) \
53 _ (9, router_advertisement) \
54 _ (10, router_solicitation) \
55 _ (11, time_exceeded) \
56 _ (12, parameter_problem) \
57 _ (13, timestamp_request) \
58 _ (14, timestamp_reply) \
59 _ (15, information_request) \
60 _ (16, information_reply) \
61 _ (17, address_mask_request) \
62 _ (18, address_mask_reply) \
64 _ (31, datagram_conversion_error) \
65 _ (32, mobile_host_redirect) \
66 _ (33, ip6_where_are_you) \
67 _ (34, ip6_i_am_here) \
68 _ (35, mobile_registration_request) \
69 _ (36, mobile_registration_reply) \
70 _ (37, domain_name_request) \
71 _ (38, domain_name_reply) \
75 #define icmp_no_code 0
77 #define foreach_icmp4_code \
78 _ (destination_unreachable, 0, destination_unreachable_net) \
79 _ (destination_unreachable, 1, destination_unreachable_host) \
80 _ (destination_unreachable, 2, protocol_unreachable) \
81 _ (destination_unreachable, 3, port_unreachable) \
82 _ (destination_unreachable, 4, fragmentation_needed_and_dont_fragment_set) \
83 _ (destination_unreachable, 5, source_route_failed) \
84 _ (destination_unreachable, 6, destination_network_unknown) \
85 _ (destination_unreachable, 7, destination_host_unknown) \
86 _ (destination_unreachable, 8, source_host_isolated) \
87 _ (destination_unreachable, 9, network_administratively_prohibited) \
88 _ (destination_unreachable, 10, host_administratively_prohibited) \
89 _ (destination_unreachable, 11, network_unreachable_for_type_of_service) \
90 _ (destination_unreachable, 12, host_unreachable_for_type_of_service) \
91 _ (destination_unreachable, 13, communication_administratively_prohibited) \
92 _ (destination_unreachable, 14, host_precedence_violation) \
93 _ (destination_unreachable, 15, precedence_cutoff_in_effect) \
94 _ (redirect, 0, network_redirect) \
95 _ (redirect, 1, host_redirect) \
96 _ (redirect, 2, type_of_service_and_network_redirect) \
97 _ (redirect, 3, type_of_service_and_host_redirect) \
98 _ (router_advertisement, 0, normal_router_advertisement) \
99 _ (router_advertisement, 16, does_not_route_common_traffic) \
100 _ (time_exceeded, 0, ttl_exceeded_in_transit) \
101 _ (time_exceeded, 1, fragment_reassembly_time_exceeded) \
102 _ (parameter_problem, 0, pointer_indicates_error) \
103 _ (parameter_problem, 1, missing_required_option) \
104 _ (parameter_problem, 2, bad_length)
107 #define foreach_icmp6_type \
108 _ (1, destination_unreachable) \
109 _ (2, packet_too_big) \
110 _ (3, time_exceeded) \
111 _ (4, parameter_problem) \
112 _ (128, echo_request) \
113 _ (129, echo_reply) \
114 _ (130, multicast_listener_request) \
115 _ (131, multicast_listener_report) \
116 _ (132, multicast_listener_done) \
117 _ (133, router_solicitation) \
118 _ (134, router_advertisement) \
119 _ (135, neighbor_solicitation) \
120 _ (136, neighbor_advertisement) \
122 _ (138, router_renumbering) \
123 _ (139, node_information_request) \
124 _ (140, node_information_response) \
125 _ (141, inverse_neighbor_solicitation) \
126 _ (142, inverse_neighbor_advertisement) \
127 _ (143, multicast_listener_report_v2) \
128 _ (144, home_agent_address_discovery_request) \
129 _ (145, home_agent_address_discovery_reply) \
130 _ (146, mobile_prefix_solicitation) \
131 _ (147, mobile_prefix_advertisement) \
132 _ (148, certification_path_solicitation) \
133 _ (149, certification_path_advertisement) \
134 _ (151, multicast_router_advertisement) \
135 _ (152, multicast_router_solicitation) \
136 _ (153, multicast_router_termination) \
137 _ (154, fmipv6_messages)
139 #define foreach_icmp6_code \
140 _ (destination_unreachable, 0, no_route_to_destination) \
141 _ (destination_unreachable, 1, destination_administratively_prohibited) \
142 _ (destination_unreachable, 2, beyond_scope_of_source_address) \
143 _ (destination_unreachable, 3, address_unreachable) \
144 _ (destination_unreachable, 4, port_unreachable) \
145 _ (destination_unreachable, 5, source_address_failed_policy) \
146 _ (destination_unreachable, 6, reject_route_to_destination) \
147 _ (time_exceeded, 0, ttl_exceeded_in_transit) \
148 _ (time_exceeded, 1, fragment_reassembly_time_exceeded) \
149 _ (parameter_problem, 0, erroneous_header_field) \
150 _ (parameter_problem, 1, unrecognized_next_header) \
151 _ (parameter_problem, 2, unrecognized_option) \
152 _ (parameter_problem, 3, first_fragment_has_incomplete_header_chain) \
153 _ (router_renumbering, 0, command) \
154 _ (router_renumbering, 1, result) \
155 _ (node_information_request, 0, data_contains_ip6_address) \
156 _ (node_information_request, 1, data_contains_name) \
157 _ (node_information_request, 2, data_contains_ip4_address) \
158 _ (node_information_response, 0, success) \
159 _ (node_information_response, 1, failed) \
160 _ (node_information_response, 2, unknown_request)
164 #define _(n,f) ICMP4_##f = n,
171 #define _(t,n,f) ICMP4_##t##_##f = n,
178 #define _(n,f) ICMP6_##f = n,
185 #define _(t,n,f) ICMP6_##t##_##f = n,
191 typedef CLIB_PACKED (struct
195 /* IP checksum of icmp header plus data which follows. */
200 /* ip6 neighbor discovery */
201 #define foreach_icmp6_neighbor_discovery_option \
202 _ (1, source_link_layer_address) \
203 _ (2, target_link_layer_address) \
204 _ (3, prefix_information) \
205 _ (4, redirected_header) \
207 _ (6, nbma_shortcut_limit) \
208 _ (7, advertisement_interval) \
209 _ (8, home_agent_information) \
210 _ (9, source_address_list) \
211 _ (10, target_address_list) \
212 _ (11, cryptographically_generated_address) \
213 _ (12, rsa_signature) \
216 _ (15, trust_anchor) \
217 _ (16, certificate) \
218 _ (17, ip_address_and_prefix) \
219 _ (18, new_router_prefix_information) \
220 _ (19, mobile_link_layer_address) \
221 _ (20, neighbor_advertisement_acknowledgment) \
223 _ (24, route_information) \
224 _ (25, recursive_dns_server) \
225 _ (26, ra_flags_extension) \
226 _ (27, handover_key_request) \
227 _ (28, handover_key_reply) \
228 _ (29, handover_assist_information) \
229 _ (30, mobile_node_identifier) \
230 _ (31, dns_search_list) \
231 _ (138, card_request) \
234 typedef enum icmp6_neighbor_discovery_option_type
236 #define _(n,f) ICMP6_NEIGHBOR_DISCOVERY_OPTION_##f = n,
237 foreach_icmp6_neighbor_discovery_option
239 } icmp6_neighbor_discovery_option_type_t;
242 typedef CLIB_PACKED (struct
246 /* Length of this header plus option data in 8 byte units. */
248 /* Option data follows. */
250 }) icmp6_neighbor_discovery_option_header_t;
252 typedef CLIB_PACKED (struct
254 icmp6_neighbor_discovery_option_header_t header;
255 u8 dst_address_length;
257 #define ICMP6_NEIGHBOR_DISCOVERY_PREFIX_INFORMATION_FLAG_ON_LINK (1 << 7)
258 #define ICMP6_NEIGHBOR_DISCOVERY_PREFIX_INFORMATION_AUTO (1 << 6)
261 u32 unused; ip6_address_t dst_address;
262 }) icmp6_neighbor_discovery_prefix_information_option_t;
264 typedef CLIB_PACKED (struct
267 u8 aux_data_len_u32s;
269 ip6_address_t mcast_addr; ip6_address_t source_addr[0];
270 }) icmp6_multicast_address_record_t;
272 typedef CLIB_PACKED (struct
274 icmp6_neighbor_discovery_option_header_t header;
276 /* IP6 header plus payload follows. */
278 }) icmp6_neighbor_discovery_redirected_header_option_t;
280 typedef CLIB_PACKED (struct
282 icmp6_neighbor_discovery_option_header_t header;
284 }) icmp6_neighbor_discovery_mtu_option_t;
286 typedef CLIB_PACKED (struct
288 icmp6_neighbor_discovery_option_header_t header;
289 u8 ethernet_address[6];
290 }) icmp6_neighbor_discovery_ethernet_link_layer_address_option_t;
292 typedef CLIB_PACKED (struct
294 icmp6_neighbor_discovery_option_header_t header;
295 u8 max_l2_address[6 + 8];
296 }) icmp6_neighbor_discovery_max_link_layer_address_option_t;
298 /* Generic neighbor discover header. Used for router solicitations,
300 typedef CLIB_PACKED (struct
302 icmp46_header_t icmp; u32 reserved_must_be_zero;
303 }) icmp6_neighbor_discovery_header_t;
305 /* Router advertisement packet formats. */
306 typedef CLIB_PACKED (struct
308 icmp46_header_t icmp;
309 /* Current hop limit to use for outgoing packets. */
310 u8 current_hop_limit;
312 #define ICMP6_ROUTER_DISCOVERY_FLAG_ADDRESS_CONFIG_VIA_DHCP (1 << 7)
313 #define ICMP6_ROUTER_DISCOVERY_FLAG_OTHER_CONFIG_VIA_DHCP (1 << 6)
314 /* Zero means unspecified. */
315 u16 router_lifetime_in_sec;
316 /* Zero means unspecified. */
317 u32 neighbor_reachable_time_in_msec;
318 /* Zero means unspecified. */
320 time_in_msec_between_retransmitted_neighbor_solicitations;
321 /* Options that may follow: source_link_layer_address, mtu, prefix_information. */
322 }) icmp6_router_advertisement_header_t;
324 /* Neighbor solicitation/advertisement header. */
325 typedef CLIB_PACKED (struct
327 icmp46_header_t icmp;
328 /* Zero for solicitation; flags for advertisement. */
329 u32 advertisement_flags;
330 /* Set when sent by a router. */
331 #define ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_ROUTER (1 << 31)
332 /* Set when response to solicitation. */
333 #define ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED (1 << 30)
334 #define ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE (1 << 29)
335 ip6_address_t target_address;
336 /* Options that may follow: source_link_layer_address
337 (for solicitation) target_link_layer_address (for advertisement). */
338 }) icmp6_neighbor_solicitation_or_advertisement_header_t;
340 typedef CLIB_PACKED (struct
342 icmp46_header_t icmp;
343 u32 reserved_must_be_zero;
344 /* Better next hop to use for given destination. */
345 ip6_address_t better_next_hop_address;
346 ip6_address_t dst_address;
347 /* Options that may follow: target_link_layer_address,
348 redirected_header. */
349 }) icmp6_redirect_header_t;
351 /* Solicitation/advertisement packet format for ethernet. */
352 typedef CLIB_PACKED (struct
355 icmp6_neighbor_solicitation_or_advertisement_header_t
357 icmp6_neighbor_discovery_ethernet_link_layer_address_option_t
359 }) icmp6_neighbor_solicitation_header_t;
362 #endif /* included_vnet_icmp46_packet_h */