/* * 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; /* *INDENT-OFF* */ typedef CLIB_PACKED (struct { u8 type; u8 code; /* IP checksum of icmp header plus data which follows. */ u16 checksum; }) icmp46_header_t; /* *INDENT-ON* */ /* 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; /* *INDENT-OFF* */ 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; /* *INDENT-ON* */ #endif /* included_vnet_icmp46_packet_h */