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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) \
+ _ (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
+ {
+ ip6_hop_by_hop_ext_t ext_hdr;
+ ip6_router_alert_option_t alert;
+ ip6_padN_option_t pad;
+ icmp46_header_t icmp;
+ u16 rsvd;
+ u16 num_addr_records;
+ icmp6_multicast_address_record_t records[0];
+ }) icmp6_multicast_listener_report_header_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;
+
+/* Router solicitation packet format for ethernet. */
+typedef CLIB_PACKED (struct
+ {
+ ip6_header_t ip;
+ icmp6_neighbor_discovery_header_t neighbor;
+ icmp6_neighbor_discovery_ethernet_link_layer_address_option_t
+ link_layer_option;
+ }) icmp6_router_solicitation_header_t;
+
+/* router advertisement packet format for ethernet. */
+typedef CLIB_PACKED (struct
+ {
+ ip6_header_t ip;
+ icmp6_router_advertisement_header_t router;
+ icmp6_neighbor_discovery_ethernet_link_layer_address_option_t
+ link_layer_option;
+ icmp6_neighbor_discovery_mtu_option_t mtu_option;
+ icmp6_neighbor_discovery_prefix_information_option_t
+ prefix[0];
+ }) icmp6_router_advertisement_packet_t;
+
+/* multicast listener report packet format for ethernet. */
+typedef CLIB_PACKED (struct
+ {
+ ip6_header_t ip;
+ icmp6_multicast_listener_report_header_t report_hdr;
+ }) icmp6_multicast_listener_report_packet_t;
+
+#endif /* included_vnet_icmp46_packet_h */