98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
/**
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* @file igmp_proto.h
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* @author Ambroz Bizjak <ambrop7@gmail.com>
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*
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* @section LICENSE
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @section DESCRIPTION
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*
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* Definitions for the IGMP protocol.
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*/
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#ifndef BADVPN_MISC_IGMP_PROTO_H
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#define BADVPN_MISC_IGMP_PROTO_H
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#include <stdint.h>
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#include <misc/packed.h>
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#define IGMP_TYPE_MEMBERSHIP_QUERY 0x11
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#define IGMP_TYPE_V1_MEMBERSHIP_REPORT 0x12
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#define IGMP_TYPE_V2_MEMBERSHIP_REPORT 0x16
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#define IGMP_TYPE_V3_MEMBERSHIP_REPORT 0x22
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#define IGMP_TYPE_V2_LEAVE_GROUP 0x17
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#define IGMP_RECORD_TYPE_MODE_IS_INCLUDE 1
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#define IGMP_RECORD_TYPE_MODE_IS_EXCLUDE 2
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#define IGMP_RECORD_TYPE_CHANGE_TO_INCLUDE_MODE 3
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#define IGMP_RECORD_TYPE_CHANGE_TO_EXCLUDE_MODE 4
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B_START_PACKED
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struct igmp_source {
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uint32_t addr;
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} B_PACKED;
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B_END_PACKED
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B_START_PACKED
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struct igmp_base {
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uint8_t type;
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uint8_t max_resp_code;
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uint16_t checksum;
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} B_PACKED;
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B_END_PACKED
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B_START_PACKED
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struct igmp_v3_query_extra {
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uint32_t group;
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uint8_t reserved4_suppress1_qrv3;
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uint8_t qqic;
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uint16_t number_of_sources;
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} B_PACKED;
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B_END_PACKED
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B_START_PACKED
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struct igmp_v3_report_extra {
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uint16_t reserved;
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uint16_t number_of_group_records;
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} B_PACKED;
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B_END_PACKED
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B_START_PACKED
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struct igmp_v3_report_record {
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uint8_t type;
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uint8_t aux_data_len;
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uint16_t number_of_sources;
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uint32_t group;
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} B_PACKED;
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B_END_PACKED
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B_START_PACKED
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struct igmp_v2_extra {
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uint32_t group;
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} B_PACKED;
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B_END_PACKED
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#endif
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