4caea9b169
Pad the icmp6stat structure so that we can add more counters in the future without breaking compatibility again, last done in r358620. Annotate the rarely executed error paths with __predict_false while here. Reviewed by: bz, melifaro Sponsored by: NetApp, Inc. Sponsored by: Klara, Inc. Differential Revision: https://reviews.freebsd.org/D26578
790 lines
27 KiB
C
790 lines
27 KiB
C
/* $FreeBSD$ */
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/* $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 itojun Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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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
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* 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 project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1982, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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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
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* 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 University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
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*/
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#ifndef _NETINET_ICMP6_H_
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#define _NETINET_ICMP6_H_
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#define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr)
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- sizeof(struct icmp6_hdr) */
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struct icmp6_hdr {
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u_int8_t icmp6_type; /* type field */
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u_int8_t icmp6_code; /* code field */
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u_int16_t icmp6_cksum; /* checksum field */
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union {
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u_int32_t icmp6_un_data32[1]; /* type-specific field */
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u_int16_t icmp6_un_data16[2]; /* type-specific field */
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u_int8_t icmp6_un_data8[4]; /* type-specific field */
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} icmp6_dataun;
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} __packed;
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#define icmp6_data32 icmp6_dataun.icmp6_un_data32
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#define icmp6_data16 icmp6_dataun.icmp6_un_data16
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#define icmp6_data8 icmp6_dataun.icmp6_un_data8
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#define icmp6_pptr icmp6_data32[0] /* parameter prob */
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#define icmp6_mtu icmp6_data32[0] /* packet too big */
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#define icmp6_id icmp6_data16[0] /* echo request/reply */
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#define icmp6_seq icmp6_data16[1] /* echo request/reply */
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#define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */
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#define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */
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#define ICMP6_PACKET_TOO_BIG 2 /* packet too big */
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#define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */
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#define ICMP6_PARAM_PROB 4 /* ip6 header bad */
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#define ICMP6_ECHO_REQUEST 128 /* echo service */
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#define ICMP6_ECHO_REPLY 129 /* echo reply */
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#define MLD_LISTENER_QUERY 130 /* multicast listener query */
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#define MLD_LISTENER_REPORT 131 /* multicast listener report */
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#define MLD_LISTENER_DONE 132 /* multicast listener done */
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#define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */
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/* RFC2292 decls */
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#define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */
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#define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */
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#define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */
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#ifndef _KERNEL
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/* the followings are for backward compatibility to old KAME apps. */
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#define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY
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#define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT
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#define MLD6_LISTENER_DONE MLD_LISTENER_DONE
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#endif
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#define ND_ROUTER_SOLICIT 133 /* router solicitation */
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#define ND_ROUTER_ADVERT 134 /* router advertisement */
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#define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */
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#define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */
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#define ND_REDIRECT 137 /* redirect */
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#define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */
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#define ICMP6_WRUREQUEST 139 /* who are you request */
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#define ICMP6_WRUREPLY 140 /* who are you reply */
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#define ICMP6_FQDN_QUERY 139 /* FQDN query */
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#define ICMP6_FQDN_REPLY 140 /* FQDN reply */
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#define ICMP6_NI_QUERY 139 /* node information request */
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#define ICMP6_NI_REPLY 140 /* node information reply */
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#define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */
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/* The definitions below are experimental. TBA */
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#define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */
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#define MLD_MTRACE 201 /* mtrace messages */
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#ifndef _KERNEL
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#define MLD6_MTRACE_RESP MLD_MTRACE_RESP
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#define MLD6_MTRACE MLD_MTRACE
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#endif
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#define ICMP6_MAXTYPE 201
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#define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */
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#define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */
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#define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */
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#define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */
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#define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */
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#define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */
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#define ICMP6_DST_UNREACH_POLICY 5 /* failed ingress/egress policy */
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#define ICMP6_DST_UNREACH_REJECT 6 /* Reject route to destination */
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#define ICMP6_DST_UNREACH_SRCROUTE 7 /* Error in source routing header */
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#define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */
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#define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */
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#define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */
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#define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */
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#define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */
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#define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */
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#define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */
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#define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */
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#define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */
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#define ICMP6_NI_SUCCESS 0 /* node information successful reply */
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#define ICMP6_NI_REFUSED 1 /* node information request is refused */
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#define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */
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#define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */
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#define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */
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#define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */
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/* Used in kernel only */
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#define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */
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#define ND_REDIRECT_ROUTER 1 /* redirect to a better router */
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/*
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* Multicast Listener Discovery
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*/
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struct mld_hdr {
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struct icmp6_hdr mld_icmp6_hdr;
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struct in6_addr mld_addr; /* multicast address */
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} __packed;
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/* definitions to provide backward compatibility to old KAME applications */
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#ifndef _KERNEL
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#define mld6_hdr mld_hdr
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#define mld6_type mld_type
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#define mld6_code mld_code
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#define mld6_cksum mld_cksum
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#define mld6_maxdelay mld_maxdelay
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#define mld6_reserved mld_reserved
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#define mld6_addr mld_addr
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#endif
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/* shortcut macro definitions */
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#define mld_type mld_icmp6_hdr.icmp6_type
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#define mld_code mld_icmp6_hdr.icmp6_code
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#define mld_cksum mld_icmp6_hdr.icmp6_cksum
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#define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0]
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#define mld_reserved mld_icmp6_hdr.icmp6_data16[1]
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#define mld_v2_reserved mld_icmp6_hdr.icmp6_data16[0]
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#define mld_v2_numrecs mld_icmp6_hdr.icmp6_data16[1]
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/*
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* Neighbor Discovery
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*/
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struct nd_router_solicit { /* router solicitation */
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struct icmp6_hdr nd_rs_hdr;
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/* could be followed by options */
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} __packed;
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#define nd_rs_type nd_rs_hdr.icmp6_type
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#define nd_rs_code nd_rs_hdr.icmp6_code
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#define nd_rs_cksum nd_rs_hdr.icmp6_cksum
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#define nd_rs_reserved nd_rs_hdr.icmp6_data32[0]
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struct nd_router_advert { /* router advertisement */
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struct icmp6_hdr nd_ra_hdr;
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u_int32_t nd_ra_reachable; /* reachable time */
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u_int32_t nd_ra_retransmit; /* retransmit timer */
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/* could be followed by options */
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} __packed;
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#define nd_ra_type nd_ra_hdr.icmp6_type
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#define nd_ra_code nd_ra_hdr.icmp6_code
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#define nd_ra_cksum nd_ra_hdr.icmp6_cksum
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#define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0]
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#define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1]
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#define ND_RA_FLAG_MANAGED 0x80
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#define ND_RA_FLAG_OTHER 0x40
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#define ND_RA_FLAG_HA 0x20
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/*
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* Router preference values based on draft-draves-ipngwg-router-selection-01.
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* These are non-standard definitions.
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*/
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#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */
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#define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */
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#define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */
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#define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */
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#define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */
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#ifdef EXPERIMENTAL
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#define ND_RA_FLAG_IPV6_ONLY 0x02 /* draft-ietf-6man-ipv6only-flag */
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#endif
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#define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1]
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struct nd_neighbor_solicit { /* neighbor solicitation */
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struct icmp6_hdr nd_ns_hdr;
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struct in6_addr nd_ns_target; /*target address */
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/* could be followed by options */
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} __packed;
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#define nd_ns_type nd_ns_hdr.icmp6_type
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#define nd_ns_code nd_ns_hdr.icmp6_code
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#define nd_ns_cksum nd_ns_hdr.icmp6_cksum
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#define nd_ns_reserved nd_ns_hdr.icmp6_data32[0]
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struct nd_neighbor_advert { /* neighbor advertisement */
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struct icmp6_hdr nd_na_hdr;
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struct in6_addr nd_na_target; /* target address */
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/* could be followed by options */
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} __packed;
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#define nd_na_type nd_na_hdr.icmp6_type
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#define nd_na_code nd_na_hdr.icmp6_code
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#define nd_na_cksum nd_na_hdr.icmp6_cksum
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#define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0]
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#if BYTE_ORDER == BIG_ENDIAN
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#define ND_NA_FLAG_ROUTER 0x80000000
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#define ND_NA_FLAG_SOLICITED 0x40000000
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#define ND_NA_FLAG_OVERRIDE 0x20000000
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#else
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#if BYTE_ORDER == LITTLE_ENDIAN
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#define ND_NA_FLAG_ROUTER 0x80
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#define ND_NA_FLAG_SOLICITED 0x40
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#define ND_NA_FLAG_OVERRIDE 0x20
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#endif
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#endif
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struct nd_redirect { /* redirect */
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struct icmp6_hdr nd_rd_hdr;
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struct in6_addr nd_rd_target; /* target address */
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struct in6_addr nd_rd_dst; /* destination address */
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/* could be followed by options */
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} __packed;
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#define nd_rd_type nd_rd_hdr.icmp6_type
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#define nd_rd_code nd_rd_hdr.icmp6_code
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#define nd_rd_cksum nd_rd_hdr.icmp6_cksum
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#define nd_rd_reserved nd_rd_hdr.icmp6_data32[0]
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struct nd_opt_hdr { /* Neighbor discovery option header */
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u_int8_t nd_opt_type;
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u_int8_t nd_opt_len;
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/* followed by option specific data*/
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} __packed;
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#define ND_OPT_SOURCE_LINKADDR 1
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#define ND_OPT_TARGET_LINKADDR 2
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#define ND_OPT_PREFIX_INFORMATION 3
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#define ND_OPT_REDIRECTED_HEADER 4
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#define ND_OPT_MTU 5
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#define ND_OPT_NONCE 14 /* RFC 3971 */
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#define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */
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#define ND_OPT_RDNSS 25 /* RFC 6106 */
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#define ND_OPT_DNSSL 31 /* RFC 6106 */
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#define ND_OPT_MAX 31
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struct nd_opt_prefix_info { /* prefix information */
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u_int8_t nd_opt_pi_type;
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u_int8_t nd_opt_pi_len;
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u_int8_t nd_opt_pi_prefix_len;
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u_int8_t nd_opt_pi_flags_reserved;
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u_int32_t nd_opt_pi_valid_time;
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u_int32_t nd_opt_pi_preferred_time;
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u_int32_t nd_opt_pi_reserved2;
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struct in6_addr nd_opt_pi_prefix;
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} __packed;
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#define ND_OPT_PI_FLAG_ONLINK 0x80
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#define ND_OPT_PI_FLAG_AUTO 0x40
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struct nd_opt_rd_hdr { /* redirected header */
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u_int8_t nd_opt_rh_type;
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u_int8_t nd_opt_rh_len;
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u_int16_t nd_opt_rh_reserved1;
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u_int32_t nd_opt_rh_reserved2;
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/* followed by IP header and data */
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} __packed;
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struct nd_opt_mtu { /* MTU option */
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u_int8_t nd_opt_mtu_type;
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u_int8_t nd_opt_mtu_len;
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u_int16_t nd_opt_mtu_reserved;
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u_int32_t nd_opt_mtu_mtu;
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} __packed;
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#define ND_OPT_NONCE_LEN ((1 * 8) - 2)
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#if ((ND_OPT_NONCE_LEN + 2) % 8) != 0
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#error "(ND_OPT_NONCE_LEN + 2) must be a multiple of 8."
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#endif
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struct nd_opt_nonce { /* nonce option */
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u_int8_t nd_opt_nonce_type;
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u_int8_t nd_opt_nonce_len;
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u_int8_t nd_opt_nonce[ND_OPT_NONCE_LEN];
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} __packed;
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struct nd_opt_route_info { /* route info */
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u_int8_t nd_opt_rti_type;
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u_int8_t nd_opt_rti_len;
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u_int8_t nd_opt_rti_prefixlen;
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u_int8_t nd_opt_rti_flags;
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u_int32_t nd_opt_rti_lifetime;
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/* prefix follows */
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} __packed;
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struct nd_opt_rdnss { /* RDNSS option (RFC 6106) */
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u_int8_t nd_opt_rdnss_type;
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u_int8_t nd_opt_rdnss_len;
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u_int16_t nd_opt_rdnss_reserved;
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u_int32_t nd_opt_rdnss_lifetime;
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/* followed by list of recursive DNS servers */
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} __packed;
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struct nd_opt_dnssl { /* DNSSL option (RFC 6106) */
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u_int8_t nd_opt_dnssl_type;
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u_int8_t nd_opt_dnssl_len;
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u_int16_t nd_opt_dnssl_reserved;
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u_int32_t nd_opt_dnssl_lifetime;
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/* followed by list of DNS search domains */
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} __packed;
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/*
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* icmp6 namelookup
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*/
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struct icmp6_namelookup {
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struct icmp6_hdr icmp6_nl_hdr;
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u_int8_t icmp6_nl_nonce[8];
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int32_t icmp6_nl_ttl;
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#if 0
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u_int8_t icmp6_nl_len;
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u_int8_t icmp6_nl_name[3];
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#endif
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/* could be followed by options */
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} __packed;
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/*
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* icmp6 node information
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*/
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struct icmp6_nodeinfo {
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struct icmp6_hdr icmp6_ni_hdr;
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u_int8_t icmp6_ni_nonce[8];
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/* could be followed by reply data */
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} __packed;
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#define ni_type icmp6_ni_hdr.icmp6_type
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#define ni_code icmp6_ni_hdr.icmp6_code
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#define ni_cksum icmp6_ni_hdr.icmp6_cksum
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#define ni_qtype icmp6_ni_hdr.icmp6_data16[0]
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#define ni_flags icmp6_ni_hdr.icmp6_data16[1]
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#define NI_QTYPE_NOOP 0 /* NOOP */
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#define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */
|
|
#define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */
|
|
#define NI_QTYPE_DNSNAME 2 /* DNS Name */
|
|
#define NI_QTYPE_NODEADDR 3 /* Node Addresses */
|
|
#define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */
|
|
|
|
#if BYTE_ORDER == BIG_ENDIAN
|
|
#define NI_SUPTYPE_FLAG_COMPRESS 0x1
|
|
#define NI_FQDN_FLAG_VALIDTTL 0x1
|
|
#elif BYTE_ORDER == LITTLE_ENDIAN
|
|
#define NI_SUPTYPE_FLAG_COMPRESS 0x0100
|
|
#define NI_FQDN_FLAG_VALIDTTL 0x0100
|
|
#endif
|
|
|
|
#ifdef NAME_LOOKUPS_04
|
|
#if BYTE_ORDER == BIG_ENDIAN
|
|
#define NI_NODEADDR_FLAG_LINKLOCAL 0x1
|
|
#define NI_NODEADDR_FLAG_SITELOCAL 0x2
|
|
#define NI_NODEADDR_FLAG_GLOBAL 0x4
|
|
#define NI_NODEADDR_FLAG_ALL 0x8
|
|
#define NI_NODEADDR_FLAG_TRUNCATE 0x10
|
|
#define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */
|
|
#elif BYTE_ORDER == LITTLE_ENDIAN
|
|
#define NI_NODEADDR_FLAG_LINKLOCAL 0x0100
|
|
#define NI_NODEADDR_FLAG_SITELOCAL 0x0200
|
|
#define NI_NODEADDR_FLAG_GLOBAL 0x0400
|
|
#define NI_NODEADDR_FLAG_ALL 0x0800
|
|
#define NI_NODEADDR_FLAG_TRUNCATE 0x1000
|
|
#define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */
|
|
#endif
|
|
#else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */
|
|
#if BYTE_ORDER == BIG_ENDIAN
|
|
#define NI_NODEADDR_FLAG_TRUNCATE 0x1
|
|
#define NI_NODEADDR_FLAG_ALL 0x2
|
|
#define NI_NODEADDR_FLAG_COMPAT 0x4
|
|
#define NI_NODEADDR_FLAG_LINKLOCAL 0x8
|
|
#define NI_NODEADDR_FLAG_SITELOCAL 0x10
|
|
#define NI_NODEADDR_FLAG_GLOBAL 0x20
|
|
#define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */
|
|
#elif BYTE_ORDER == LITTLE_ENDIAN
|
|
#define NI_NODEADDR_FLAG_TRUNCATE 0x0100
|
|
#define NI_NODEADDR_FLAG_ALL 0x0200
|
|
#define NI_NODEADDR_FLAG_COMPAT 0x0400
|
|
#define NI_NODEADDR_FLAG_LINKLOCAL 0x0800
|
|
#define NI_NODEADDR_FLAG_SITELOCAL 0x1000
|
|
#define NI_NODEADDR_FLAG_GLOBAL 0x2000
|
|
#define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */
|
|
#endif
|
|
#endif
|
|
|
|
struct ni_reply_fqdn {
|
|
u_int32_t ni_fqdn_ttl; /* TTL */
|
|
u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
|
|
u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
|
|
} __packed;
|
|
|
|
/*
|
|
* Router Renumbering. as router-renum-08.txt
|
|
*/
|
|
struct icmp6_router_renum { /* router renumbering header */
|
|
struct icmp6_hdr rr_hdr;
|
|
u_int8_t rr_segnum;
|
|
u_int8_t rr_flags;
|
|
u_int16_t rr_maxdelay;
|
|
u_int32_t rr_reserved;
|
|
} __packed;
|
|
|
|
#define ICMP6_RR_FLAGS_TEST 0x80
|
|
#define ICMP6_RR_FLAGS_REQRESULT 0x40
|
|
#define ICMP6_RR_FLAGS_FORCEAPPLY 0x20
|
|
#define ICMP6_RR_FLAGS_SPECSITE 0x10
|
|
#define ICMP6_RR_FLAGS_PREVDONE 0x08
|
|
|
|
#define rr_type rr_hdr.icmp6_type
|
|
#define rr_code rr_hdr.icmp6_code
|
|
#define rr_cksum rr_hdr.icmp6_cksum
|
|
#define rr_seqnum rr_hdr.icmp6_data32[0]
|
|
|
|
struct rr_pco_match { /* match prefix part */
|
|
u_int8_t rpm_code;
|
|
u_int8_t rpm_len;
|
|
u_int8_t rpm_ordinal;
|
|
u_int8_t rpm_matchlen;
|
|
u_int8_t rpm_minlen;
|
|
u_int8_t rpm_maxlen;
|
|
u_int16_t rpm_reserved;
|
|
struct in6_addr rpm_prefix;
|
|
} __packed;
|
|
|
|
#define RPM_PCO_ADD 1
|
|
#define RPM_PCO_CHANGE 2
|
|
#define RPM_PCO_SETGLOBAL 3
|
|
#define RPM_PCO_MAX 4
|
|
|
|
struct rr_pco_use { /* use prefix part */
|
|
u_int8_t rpu_uselen;
|
|
u_int8_t rpu_keeplen;
|
|
u_int8_t rpu_ramask;
|
|
u_int8_t rpu_raflags;
|
|
u_int32_t rpu_vltime;
|
|
u_int32_t rpu_pltime;
|
|
u_int32_t rpu_flags;
|
|
struct in6_addr rpu_prefix;
|
|
} __packed;
|
|
#define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80
|
|
#define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40
|
|
|
|
#if BYTE_ORDER == BIG_ENDIAN
|
|
#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000
|
|
#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000
|
|
#elif BYTE_ORDER == LITTLE_ENDIAN
|
|
#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80
|
|
#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40
|
|
#endif
|
|
|
|
struct rr_result { /* router renumbering result message */
|
|
u_int16_t rrr_flags;
|
|
u_int8_t rrr_ordinal;
|
|
u_int8_t rrr_matchedlen;
|
|
u_int32_t rrr_ifid;
|
|
struct in6_addr rrr_prefix;
|
|
} __packed;
|
|
#if BYTE_ORDER == BIG_ENDIAN
|
|
#define ICMP6_RR_RESULT_FLAGS_OOB 0x0002
|
|
#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001
|
|
#elif BYTE_ORDER == LITTLE_ENDIAN
|
|
#define ICMP6_RR_RESULT_FLAGS_OOB 0x0200
|
|
#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100
|
|
#endif
|
|
|
|
/*
|
|
* icmp6 filter structures.
|
|
*/
|
|
|
|
struct icmp6_filter {
|
|
u_int32_t icmp6_filt[8];
|
|
};
|
|
|
|
#ifdef _KERNEL
|
|
#define ICMP6_FILTER_SETPASSALL(filterp) \
|
|
do { \
|
|
int i; u_char *p; \
|
|
p = (u_char *)filterp; \
|
|
for (i = 0; i < sizeof(struct icmp6_filter); i++) \
|
|
p[i] = 0xff; \
|
|
} while (/*CONSTCOND*/ 0)
|
|
#define ICMP6_FILTER_SETBLOCKALL(filterp) \
|
|
bzero(filterp, sizeof(struct icmp6_filter))
|
|
#else /* _KERNEL */
|
|
#define ICMP6_FILTER_SETPASSALL(filterp) \
|
|
memset(filterp, 0xff, sizeof(struct icmp6_filter))
|
|
#define ICMP6_FILTER_SETBLOCKALL(filterp) \
|
|
memset(filterp, 0x00, sizeof(struct icmp6_filter))
|
|
#endif /* _KERNEL */
|
|
|
|
#define ICMP6_FILTER_SETPASS(type, filterp) \
|
|
(((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31)))
|
|
#define ICMP6_FILTER_SETBLOCK(type, filterp) \
|
|
(((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31)))
|
|
#define ICMP6_FILTER_WILLPASS(type, filterp) \
|
|
((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
|
|
#define ICMP6_FILTER_WILLBLOCK(type, filterp) \
|
|
((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
|
|
|
|
/*
|
|
* Variables related to this implementation
|
|
* of the internet control message protocol version 6.
|
|
*/
|
|
struct icmp6errstat {
|
|
uint64_t icp6errs_dst_unreach_noroute;
|
|
uint64_t icp6errs_dst_unreach_admin;
|
|
uint64_t icp6errs_dst_unreach_beyondscope;
|
|
uint64_t icp6errs_dst_unreach_addr;
|
|
uint64_t icp6errs_dst_unreach_noport;
|
|
uint64_t icp6errs_packet_too_big;
|
|
uint64_t icp6errs_time_exceed_transit;
|
|
uint64_t icp6errs_time_exceed_reassembly;
|
|
uint64_t icp6errs_paramprob_header;
|
|
uint64_t icp6errs_paramprob_nextheader;
|
|
uint64_t icp6errs_paramprob_option;
|
|
uint64_t icp6errs_redirect; /* we regard redirect as an error here */
|
|
uint64_t icp6errs_unknown;
|
|
};
|
|
|
|
struct icmp6stat {
|
|
/* statistics related to icmp6 packets generated */
|
|
uint64_t icp6s_error; /* # of calls to icmp6_error */
|
|
uint64_t icp6s_canterror; /* no error 'cuz old was icmp */
|
|
uint64_t icp6s_toofreq; /* no error 'cuz rate limitation */
|
|
uint64_t icp6s_outhist[256];
|
|
/* statistics related to input message processed */
|
|
uint64_t icp6s_badcode; /* icmp6_code out of range */
|
|
uint64_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */
|
|
uint64_t icp6s_checksum; /* bad checksum */
|
|
uint64_t icp6s_badlen; /* calculated bound mismatch */
|
|
/*
|
|
* number of responses: this member is inherited from netinet code, but
|
|
* for netinet6 code, it is already available in icp6s_outhist[].
|
|
*/
|
|
uint64_t icp6s_reflect;
|
|
uint64_t icp6s_inhist[256];
|
|
uint64_t icp6s_nd_toomanyopt; /* too many ND options */
|
|
struct icmp6errstat icp6s_outerrhist;
|
|
#define icp6s_odst_unreach_noroute \
|
|
icp6s_outerrhist.icp6errs_dst_unreach_noroute
|
|
#define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin
|
|
#define icp6s_odst_unreach_beyondscope \
|
|
icp6s_outerrhist.icp6errs_dst_unreach_beyondscope
|
|
#define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr
|
|
#define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport
|
|
#define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big
|
|
#define icp6s_otime_exceed_transit \
|
|
icp6s_outerrhist.icp6errs_time_exceed_transit
|
|
#define icp6s_otime_exceed_reassembly \
|
|
icp6s_outerrhist.icp6errs_time_exceed_reassembly
|
|
#define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header
|
|
#define icp6s_oparamprob_nextheader \
|
|
icp6s_outerrhist.icp6errs_paramprob_nextheader
|
|
#define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option
|
|
#define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect
|
|
#define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown
|
|
uint64_t icp6s_pmtuchg; /* path MTU changes */
|
|
uint64_t icp6s_nd_badopt; /* bad ND options */
|
|
uint64_t icp6s_badns; /* bad neighbor solicitation */
|
|
uint64_t icp6s_badna; /* bad neighbor advertisement */
|
|
uint64_t icp6s_badrs; /* bad router solicitation */
|
|
uint64_t icp6s_badra; /* bad router advertisement */
|
|
uint64_t icp6s_badredirect; /* bad redirect message */
|
|
uint64_t icp6s_overflowdefrtr; /* Too many default routers. */
|
|
uint64_t icp6s_overflowprfx; /* Too many prefixes. */
|
|
uint64_t icp6s_overflownndp; /* Too many neighbour entries. */
|
|
uint64_t icp6s_overflowredirect;/* Too many redirects. */
|
|
uint64_t icp6s_invlhlim; /* Invalid hop limit. */
|
|
uint64_t icp6s_spare[32];
|
|
};
|
|
|
|
#ifdef _KERNEL
|
|
#include <sys/counter.h>
|
|
|
|
VNET_PCPUSTAT_DECLARE(struct icmp6stat, icmp6stat);
|
|
/*
|
|
* In-kernel consumers can use these accessor macros directly to update
|
|
* stats.
|
|
*/
|
|
#define ICMP6STAT_ADD(name, val) \
|
|
VNET_PCPUSTAT_ADD(struct icmp6stat, icmp6stat, name, (val))
|
|
#define ICMP6STAT_INC(name) ICMP6STAT_ADD(name, 1)
|
|
|
|
/*
|
|
* Kernel module consumers must use this accessor macro.
|
|
*/
|
|
void kmod_icmp6stat_inc(int statnum);
|
|
#define KMOD_ICMP6STAT_INC(name) \
|
|
kmod_icmp6stat_inc(offsetof(struct icmp6stat, name) / sizeof(uint64_t))
|
|
#endif
|
|
|
|
/*
|
|
* Names for ICMP sysctl objects
|
|
*/
|
|
#define ICMPV6CTL_STATS 1
|
|
#define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */
|
|
#define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */
|
|
#if 0 /*obsoleted*/
|
|
#define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */
|
|
#endif
|
|
#define ICMPV6CTL_ND6_PRUNE 6
|
|
#define ICMPV6CTL_ND6_DELAY 8
|
|
#define ICMPV6CTL_ND6_UMAXTRIES 9
|
|
#define ICMPV6CTL_ND6_MMAXTRIES 10
|
|
#define ICMPV6CTL_ND6_USELOOPBACK 11
|
|
/*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */
|
|
#define ICMPV6CTL_NODEINFO 13
|
|
#define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */
|
|
#define ICMPV6CTL_ND6_MAXNUDHINT 15
|
|
#define ICMPV6CTL_MTUDISC_HIWAT 16
|
|
#define ICMPV6CTL_MTUDISC_LOWAT 17
|
|
#define ICMPV6CTL_ND6_DEBUG 18
|
|
#define ICMPV6CTL_ND6_DRLIST 19
|
|
#define ICMPV6CTL_ND6_PRLIST 20
|
|
#define ICMPV6CTL_MLD_MAXSRCFILTER 21
|
|
#define ICMPV6CTL_MLD_SOMAXSRC 22
|
|
#define ICMPV6CTL_MLD_VERSION 23
|
|
#define ICMPV6CTL_ND6_MAXQLEN 24
|
|
#define ICMPV6CTL_NODEINFO_OLDMCPREFIX 25
|
|
#define ICMPV6CTL_MAXID 26
|
|
|
|
#ifdef _KERNEL
|
|
# ifdef __STDC__
|
|
struct nhop_object;
|
|
struct rttimer;
|
|
struct in6_multi;
|
|
# endif
|
|
void icmp6_paramerror(struct mbuf *, int);
|
|
void icmp6_error(struct mbuf *, int, int, int);
|
|
void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *);
|
|
int icmp6_input(struct mbuf **, int *, int);
|
|
void icmp6_fasttimo(void);
|
|
void icmp6_slowtimo(void);
|
|
void icmp6_prepare(struct mbuf *);
|
|
void icmp6_redirect_input(struct mbuf *, int);
|
|
void icmp6_redirect_output(struct mbuf *, struct nhop_object *);
|
|
|
|
struct ip6ctlparam;
|
|
void icmp6_mtudisc_update(struct ip6ctlparam *, int);
|
|
|
|
/* XXX: is this the right place for these macros? */
|
|
#define icmp6_ifstat_inc(ifp, tag) \
|
|
do { \
|
|
if (ifp) \
|
|
counter_u64_add(((struct in6_ifextra *) \
|
|
((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat[\
|
|
offsetof(struct icmp6_ifstat, tag) / sizeof(uint64_t)], 1);\
|
|
} while (/*CONSTCOND*/ 0)
|
|
|
|
#define icmp6_ifoutstat_inc(ifp, type, code) \
|
|
do { \
|
|
icmp6_ifstat_inc(ifp, ifs6_out_msg); \
|
|
if (type < ICMP6_INFOMSG_MASK) \
|
|
icmp6_ifstat_inc(ifp, ifs6_out_error); \
|
|
switch (type) { \
|
|
case ICMP6_DST_UNREACH: \
|
|
icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \
|
|
if (code == ICMP6_DST_UNREACH_ADMIN) \
|
|
icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \
|
|
break; \
|
|
case ICMP6_PACKET_TOO_BIG: \
|
|
icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \
|
|
break; \
|
|
case ICMP6_TIME_EXCEEDED: \
|
|
icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \
|
|
break; \
|
|
case ICMP6_PARAM_PROB: \
|
|
icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \
|
|
break; \
|
|
case ICMP6_ECHO_REQUEST: \
|
|
icmp6_ifstat_inc(ifp, ifs6_out_echo); \
|
|
break; \
|
|
case ICMP6_ECHO_REPLY: \
|
|
icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \
|
|
break; \
|
|
case MLD_LISTENER_QUERY: \
|
|
icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \
|
|
break; \
|
|
case MLD_LISTENER_REPORT: \
|
|
icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \
|
|
break; \
|
|
case MLD_LISTENER_DONE: \
|
|
icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \
|
|
break; \
|
|
case ND_ROUTER_SOLICIT: \
|
|
icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \
|
|
break; \
|
|
case ND_ROUTER_ADVERT: \
|
|
icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \
|
|
break; \
|
|
case ND_NEIGHBOR_SOLICIT: \
|
|
icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \
|
|
break; \
|
|
case ND_NEIGHBOR_ADVERT: \
|
|
icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \
|
|
break; \
|
|
case ND_REDIRECT: \
|
|
icmp6_ifstat_inc(ifp, ifs6_out_redirect); \
|
|
break; \
|
|
} \
|
|
} while (/*CONSTCOND*/ 0)
|
|
|
|
VNET_DECLARE(int, icmp6_rediraccept); /* accept/process redirects */
|
|
VNET_DECLARE(int, icmp6_redirtimeout); /* cache time for redirect routes */
|
|
|
|
#define V_icmp6_rediraccept VNET(icmp6_rediraccept)
|
|
#define V_icmp6_redirtimeout VNET(icmp6_redirtimeout)
|
|
|
|
#define ICMP6_NODEINFO_FQDNOK 0x1
|
|
#define ICMP6_NODEINFO_NODEADDROK 0x2
|
|
#define ICMP6_NODEINFO_TMPADDROK 0x4
|
|
#define ICMP6_NODEINFO_GLOBALOK 0x8
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* not _NETINET_ICMP6_H_ */
|