mirror of https://github.com/ARMmbed/mbed-os.git
89 lines
3.4 KiB
C
89 lines
3.4 KiB
C
/*
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* Copyright (c) 2013-2017, Arm Limited and affiliates.
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef IPV6_CONSTANTS_H_
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#define IPV6_CONSTANTS_H_
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#define IPV6_MIN_LINK_MTU 1280 /* All links can transfer 1280-octet IP packets */
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#define IPV6_MIN_FRAG_MRU 1500 /* All hosts can receive 1500-octet fragmented datagrams */
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/*
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* IPv6 header offsets
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*/
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#define IPV6_HDROFF_FLOW_LABEL 1
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#define IPV6_HDROFF_PAYLOAD_LENGTH 4
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#define IPV6_HDROFF_NH 6
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#define IPV6_HDROFF_HOP_LIMIT 7
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#define IPV6_HDROFF_SRC_ADDR 8
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#define IPV6_HDROFF_DST_ADDR 24
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#define IPV6_HDRLEN 40
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/*
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* Standard IPv6 Next Header numbers
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*/
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#define IPV6_NH_HOP_BY_HOP 0
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#define IPV6_NH_TCP 6
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#define IPV6_NH_UDP 17
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#define IPV6_NH_IPV6 41
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#define IPV6_NH_ROUTING 43
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#define IPV6_NH_FRAGMENT 44
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#define IPV6_NH_AUTH 51
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#define IPV6_NH_MOBILITY 55
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#define IPV6_NH_ICMPV6 58
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#define IPV6_NH_NONE 59
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#define IPV6_NH_DEST_OPT 60
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#define IPV6_NH_HIP 139
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#define IPV6_NH_SHIM6 140
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/* Options in IPv6 Destination/Hop-by-Hop Options Headers */
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#define IPV6_OPTION_PAD1 0x00 /* (skip, does not change en-route) */
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#define IPV6_OPTION_PADN 0x01 /* (skip, does not change en-route) */
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#define IPV6_OPTION_ROUTER_ALERT 0x05 /* (skip, does not change en-route) */
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#define IPV6_OPTION_RPL 0x63 /* (discard, may change en-route) */
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#define IPV6_OPTION_MPL 0x6D /* (discard, may change en-route) */
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#define IPV6_OPTION_MPL_EXP 0x7E /* (discard, may change en-route) */
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/* Encoded bits in IPv6 Option numbers; action if unrecognised, and mutability */
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#define IPV6_OPTION_ACTION_MASK 0xC0
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#define IPV6_OPTION_ACTION_SKIP 0x00 /* ignore unrecognised */
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#define IPV6_OPTION_ACTION_DISCARD 0x40 /* discard packet */
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#define IPV6_OPTION_ACTION_ERROR 0x80 /* discard, and send ICMP Parameter Problem */
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#define IPV6_OPTION_ACTION_ERROR_UNICAST 0xC0 /* discard, and send ICMP Parameter Problem if unicast dst */
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#define IPV6_OPTION_CHANGE_MASK 0x20
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#define IPV6_OPTION_CHANGE_DOES_NOT 0x00 /* does not change en-route */
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#define IPV6_OPTION_CHANGE_MAY 0x20 /* may change en-route */
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/* Routing Types */
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#define IPV6_ROUTING_TYPE_RPL 3
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/* Scope values (RFC 7346) */
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#define IPV6_SCOPE_INTERFACE_LOCAL 0x1
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#define IPV6_SCOPE_LINK_LOCAL 0x2
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#define IPV6_SCOPE_REALM_LOCAL 0x3
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#define IPV6_SCOPE_ADMIN_LOCAL 0x4
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#define IPV6_SCOPE_SITE_LOCAL 0x5
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#define IPV6_SCOPE_ORGANIZATION_LOCAL 0x8
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#define IPV6_SCOPE_GLOBAL 0xE
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/* Router Alert values (RFC 2711) */
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#define IPV6_ROUTER_ALERT_MLD 0
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#endif /* IPV6_CONSTANTS_H_ */
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