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 * igmp_packet.h: igmp packet format
18 * Copyright (c) 2011 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_igmp_packet_h
41 #define included_vnet_igmp_packet_h
43 #include <vnet/ip/ip4_packet.h>
44 #include <vnet/ip/ip6_packet.h>
46 #define foreach_igmp_type \
47 _ (0x11, membership_query) \
48 _ (0x12, membership_report_v1) \
51 _ (0x15, cisco_trace) \
52 _ (0x16, membership_report_v2) \
53 _ (0x17, leave_group_v2) \
54 _ (0x1e, traceroute_response) \
55 _ (0x1f, traceroute_request) \
56 _ (0x22, membership_report_v3) \
57 _ (0x30, router_advertisement) \
58 _ (0x31, router_solicitation) \
59 _ (0x32, router_termination)
63 #define _(n,f) IGMP_TYPE_##f = n,
79 /* membership_query, version <= 2 reports. */
82 /* Multicast destination address. */
88 /* type 0x11 (IGMPv3) */
93 /* Reserved, Suppress Router-Side Processing flag and
94 Querier's Robustness Variable RRRRSQQQ. */
97 /* Querier's Query Interval Code */
101 ip4_address_t src_addresses[0];
102 } igmp_membership_query_v3_t;
104 #define foreach_igmp_membership_group_v3_type \
105 _ (1, mode_is_filter_include) \
106 _ (2, mode_is_filter_exclude) \
107 _ (3, change_to_filter_include) \
108 _ (4, change_to_filter_exclude) \
109 _ (5, allow_new_sources) \
110 _ (6, block_old_sources)
114 #define _(n,f) IGMP_MEMBERSHIP_GROUP_##f = n,
115 foreach_igmp_membership_group_v3_type
117 } igmp_membership_group_v3_type_t;
121 igmp_membership_group_v3_type_t type:8;
123 /* Number of 32 bit words of aux data after source addresses. */
126 /* Number of source addresses that follow. */
129 /* Destination multicast address. */
130 ip4_address_t dst_address;
132 ip4_address_t src_addresses[0];
133 } igmp_membership_group_v3_t;
135 always_inline igmp_membership_group_v3_t *
136 igmp_membership_group_v3_next (igmp_membership_group_v3_t * g)
139 + g->n_src_addresses * sizeof (g->src_addresses[0])
140 + g->n_aux_u32s * sizeof (u32));
146 igmp_header_t header;
150 /* Number of groups which follow. */
153 igmp_membership_group_v3_t groups[0];
154 } igmp_membership_report_v3_t;
156 /* IP6 flavor of IGMP is called MLD which is embedded in ICMP6. */
159 /* Preceeded by ICMP v6 header. */
160 u16 max_response_delay_in_milliseconds;
165 #endif /* included_vnet_igmp_packet_h */
168 * fd.io coding-style-patch-verification: ON
171 * eval: (c-set-style "gnu")