FD.io VPP  v16.09
Vector Packet Processing
igmp_packet.h
Go to the documentation of this file.
1 /*
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:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
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.
14  */
15 /*
16  * igmp_packet.h: igmp packet format
17  *
18  * Copyright (c) 2011 Eliot Dresselhaus
19  *
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:
27  *
28  * The above copyright notice and this permission notice shall be
29  * included in all copies or substantial portions of the Software.
30  *
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.
38  */
39 
40 #ifndef included_vnet_igmp_packet_h
41 #define included_vnet_igmp_packet_h
42 
43 #include <vnet/ip/ip4_packet.h>
44 #include <vnet/ip/ip6_packet.h>
45 
46 #define foreach_igmp_type \
47  _ (0x11, membership_query) \
48  _ (0x12, membership_report_v1) \
49  _ (0x13, dvmrp) \
50  _ (0x14, pim_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)
60 
61 typedef enum {
62 #define _(n,f) IGMP_TYPE_##f = n,
64 #undef _
65 } igmp_type_t;
66 
67 typedef struct {
69 
71 
74 
75 typedef struct {
76  /* membership_query, version <= 2 reports. */
78 
79  /* Multicast destination address. */
82 
83 #define foreach_igmp_membership_group_v3_type \
84  _ (1, mode_is_filter_include) \
85  _ (2, mode_is_filter_exclude) \
86  _ (3, change_to_filter_include) \
87  _ (4, change_to_filter_exclude) \
88  _ (5, allow_new_sources) \
89  _ (6, block_old_sources)
90 
91 typedef enum {
92 #define _(n,f) IGMP_MEMBERSHIP_GROUP_##f = n,
94 #undef _
96 
97 typedef struct {
99 
100  /* Number of 32 bit words of aux data after source addresses. */
102 
103  /* Number of source addresses that follow. */
105 
106  /* Destination multicast address. */
108 
109  ip4_address_t src_addresses[0];
111 
114 {
115  return ((void *) g
116  + g->n_src_addresses * sizeof (g->src_addresses[0])
117  + g->n_aux_u32s * sizeof (u32));
118 }
119 
120 typedef struct {
121  /* Type 0x22. */
123 
125 
126  /* Number of groups which follow. */
128 
131 
132 /* IP6 flavor of IGMP is called MLD which is embedded in ICMP6. */
133 typedef struct {
134  /* Preceeded by ICMP v6 header. */
138 } mld_header_t;
139 
140 #endif /* included_vnet_igmp_packet_h */
static igmp_membership_group_v3_t * igmp_membership_group_v3_next(igmp_membership_group_v3_t *g)
Definition: igmp_packet.h:113
bad routing header type(not 4)") sr_error (NO_MORE_SEGMENTS
igmp_membership_group_v3_type_t
Definition: igmp_packet.h:91
#define foreach_igmp_membership_group_v3_type
Definition: igmp_packet.h:83
#define always_inline
Definition: clib.h:84
ip6_address_t dst
Definition: igmp_packet.h:137
igmp_header_t header
Definition: igmp_packet.h:77
#define foreach_igmp_type
Definition: igmp_packet.h:46
unsigned int u32
Definition: types.h:88
unsigned short u16
Definition: types.h:57
unsigned char u8
Definition: types.h:56
u16 max_response_delay_in_milliseconds
Definition: igmp_packet.h:135
ip4_address_t src_addresses[0]
Definition: igmp_packet.h:109
igmp_type_t
Definition: igmp_packet.h:61
ip4_address_t dst
Definition: igmp_packet.h:80