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/*
* 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 */
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