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/* $NetBSD: ip6_var.h,v 1.64 2015/01/20 21:27:36 roy Exp $ */
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/* $KAME: ip6_var.h,v 1.33 2000/06/11 14:59:20 jinmei Exp $ */
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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_var.h 8.1 (Berkeley) 6/10/93
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*/
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#ifndef _NETINET6_IP6_VAR_H_
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#define _NETINET6_IP6_VAR_H_
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#include <sys/socketvar.h> |
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#include <net/route.h> |
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/*
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* IP6 reassembly queue structure. Each fragment
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* being reassembled is attached to one of these structures.
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*/
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struct ip6q {
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u_int32_t ip6q_head; |
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u_int16_t ip6q_len; |
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u_int8_t ip6q_nxt; /* ip6f_nxt in first fragment */
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u_int8_t ip6q_hlim; |
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struct ip6asfrag *ip6q_down;
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struct ip6asfrag *ip6q_up;
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u_int32_t ip6q_ident; |
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u_int8_t ip6q_arrive; |
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u_int8_t ip6q_ttl; |
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struct in6_addr ip6q_src, ip6q_dst;
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struct ip6q *ip6q_next;
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struct ip6q *ip6q_prev;
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int ip6q_unfrglen; /* len of unfragmentable part */ |
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#ifdef notyet
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u_char *ip6q_nxtp; |
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#endif
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int ip6q_nfrag; /* # of fragments */ |
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}; |
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struct ip6asfrag {
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u_int32_t ip6af_head; |
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u_int16_t ip6af_len; |
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u_int8_t ip6af_nxt; |
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u_int8_t ip6af_hlim; |
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/* must not override the above members during reassembling */
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struct ip6asfrag *ip6af_down;
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struct ip6asfrag *ip6af_up;
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struct mbuf *ip6af_m;
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int ip6af_offset; /* offset in ip6af_m to next header */ |
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int ip6af_frglen; /* fragmentable part length */ |
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int ip6af_off; /* fragment offset */ |
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u_int16_t ip6af_mff; /* more fragment bit in frag off */
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}; |
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#define IP6_REASS_MBUF(ip6af) ((ip6af)->ip6af_m)
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struct ip6_moptions {
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struct ifnet *im6o_multicast_ifp; /* ifp for outgoing multicasts */ |
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u_char im6o_multicast_hlim; /* hoplimit for outgoing multicasts */
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u_char im6o_multicast_loop; /* 1 >= hear sends if a member */
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LIST_HEAD(, in6_multi_mship) im6o_memberships; |
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}; |
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/*
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* Control options for outgoing packets
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*/
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/* Routing header related info */
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struct ip6po_rhinfo {
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struct ip6_rthdr *ip6po_rhi_rthdr; /* Routing header */ |
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struct route ip6po_rhi_route; /* Route to the 1st hop */ |
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}; |
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#define ip6po_rthdr ip6po_rhinfo.ip6po_rhi_rthdr
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#define ip6po_route ip6po_rhinfo.ip6po_rhi_route
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/* Nexthop related info */
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struct ip6po_nhinfo {
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struct sockaddr *ip6po_nhi_nexthop;
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struct route ip6po_nhi_route; /* Route to the nexthop */ |
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}; |
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#define ip6po_nexthop ip6po_nhinfo.ip6po_nhi_nexthop
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#define ip6po_nextroute ip6po_nhinfo.ip6po_nhi_route
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struct ip6_pktopts {
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int ip6po_hlim; /* Hoplimit for outgoing packets */ |
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struct in6_pktinfo *ip6po_pktinfo; /* Outgoing IF/address information */ |
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struct ip6po_nhinfo ip6po_nhinfo; /* Next-hop address information */ |
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struct ip6_hbh *ip6po_hbh; /* Hop-by-Hop options header */ |
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struct ip6_dest *ip6po_dest1; /* Destination options header(1st part) */ |
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struct ip6po_rhinfo ip6po_rhinfo; /* Routing header related info. */ |
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struct ip6_dest *ip6po_dest2; /* Destination options header(2nd part) */ |
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int ip6po_tclass; /* traffic class */ |
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int ip6po_minmtu; /* fragment vs PMTU discovery policy */ |
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#define IP6PO_MINMTU_MCASTONLY -1 /* default; send at min MTU for multicast*/ |
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#define IP6PO_MINMTU_DISABLE 0 /* always perform pmtu disc */ |
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#define IP6PO_MINMTU_ALL 1 /* always send at min MTU */ |
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int ip6po_prefer_tempaddr; /* whether temporary addresses are |
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* preferred as source address */
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#define IP6PO_TEMPADDR_SYSTEM -1 /* follow the system default */ |
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#define IP6PO_TEMPADDR_NOTPREFER 0 /* not prefer temporary address */ |
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#define IP6PO_TEMPADDR_PREFER 1 /* prefer temporary address */ |
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int ip6po_flags;
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#if 0 /* parameters in this block is obsolete. do not reuse the values. */
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#define IP6PO_REACHCONF 0x01 /* upper-layer reachability confirmation. */
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#define IP6PO_MINMTU 0x02 /* use minimum MTU (IPV6_USE_MIN_MTU) */
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#endif
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#define IP6PO_DONTFRAG 0x04 /* disable fragmentation (IPV6_DONTFRAG) */ |
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}; |
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/*
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* IPv6 statistics.
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* Each counter is an unsigned 64-bit value.
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*/
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#define IP6_STAT_TOTAL 0 /* total packets received */ |
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#define IP6_STAT_TOOSHORT 1 /* packet too short */ |
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#define IP6_STAT_TOOSMALL 2 /* not enough data */ |
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#define IP6_STAT_FRAGMENTS 3 /* fragments received */ |
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#define IP6_STAT_FRAGDROPPED 4 /* frags dropped (dups, out of space) */ |
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#define IP6_STAT_FRAGTIMEOUT 5 /* fragments timed out */ |
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#define IP6_STAT_FRAGOVERFLOW 6 /* fragments that exceed limit */ |
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#define IP6_STAT_FORWARD 7 /* packets forwarded */ |
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#define IP6_STAT_CANTFORWARD 8 /* packets rcvd for uncreachable dst */ |
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#define IP6_STAT_REDIRECTSENT 9 /* packets forwarded on same net */ |
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#define IP6_STAT_DELIVERED 10 /* datagrams delivered to upper level */ |
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#define IP6_STAT_LOCALOUT 11 /* total IP packets generated here */ |
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#define IP6_STAT_ODROPPED 12 /* lost packets due to nobufs, etc. */ |
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#define IP6_STAT_REASSEMBLED 13 /* total packets reassembled ok */ |
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#define IP6_STAT_FRAGMENTED 14 /* datagrams successfully fragmented */ |
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#define IP6_STAT_OFRAGMENTS 15 /* output fragments created */ |
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#define IP6_STAT_CANTFRAG 16 /* don't fragment flag was set, etc. */ |
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#define IP6_STAT_BADOPTIONS 17 /* error in option processing */ |
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#define IP6_STAT_NOROUTE 18 /* packets discarded due to no route */ |
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#define IP6_STAT_BADVERS 19 /* ip6 version != 6 */ |
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#define IP6_STAT_RAWOUT 20 /* total raw ip packets generated */ |
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#define IP6_STAT_BADSCOPE 21 /* scope error */ |
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#define IP6_STAT_NOTMEMBER 22 /* don't join this multicast group */ |
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#define IP6_STAT_NXTHIST 23 /* next header histogram */ |
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/* space for 256 counters */
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#define IP6_STAT_M1 279 /* one mbuf */ |
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#define IP6_STAT_M2M 280 /* two or more mbuf */ |
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/* space for 32 counters */
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#define IP6_STAT_MEXT1 312 /* one ext mbuf */ |
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#define IP6_STAT_MEXT2M 313 /* two or more ext mbuf */ |
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#define IP6_STAT_EXTHDRTOOLONG 314 /* ext hdr are not contiguous */ |
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#define IP6_STAT_NOGIF 315 /* no match gif found */ |
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#define IP6_STAT_TOOMANYHDR 316 /* discarded due to too many headers */ |
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/*
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* statistics for improvement of the source address selection
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* algorithm:
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* XXX: hardcoded 16 = # of ip6 multicast scope types + 1
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*/
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#define IP6_STAT_SOURCES_NONE 317 /* number of times that address |
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selection fails */
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#define IP6_STAT_SOURCES_SAMEIF 318 /* number of times that an address |
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on the outgoing I/F is chosen */
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/* space for 16 counters */
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#define IP6_STAT_SOURCES_OTHERIF 334 /* number of times that an address on |
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a non-outgoing I/F is chosen */
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/* space for 16 counters */
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#define IP6_STAT_SOURCES_SAMESCOPE 350 /* number of times that an address that |
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has the same scope from the dest.
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is chosen */
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/* space for 16 counters */
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#define IP6_STAT_SOURCES_OTHERSCOPE 366 /* number of times that an address that |
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has a different scope from the dest.
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is chosen */
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/* space for 16 counters */
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#define IP6_STAT_SOURCES_DEPRECATED 382 /* number of times that a deprecated |
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address is chosen */
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/* space for 16 counters */
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#define IP6_STAT_FORWARD_CACHEHIT 398 |
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#define IP6_STAT_FORWARD_CACHEMISS 399 |
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#define IP6_STAT_FASTFORWARD 400 /* packets fast forwarded */ |
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#define IP6_STAT_FASTFORWARDFLOWS 401 /* number of fast forward flows */ |
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#define IP6_NSTATS 402 |
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#define IP6FLOW_HASHBITS 6 /* should not be a multiple of 8 */ |
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/*
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* Structure for an IPv6 flow (ip6_fastforward).
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*/
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struct ip6flow {
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LIST_ENTRY(ip6flow) ip6f_list; /* next in active list */
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LIST_ENTRY(ip6flow) ip6f_hash; /* next ip6flow in bucket */
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struct in6_addr ip6f_dst; /* destination address */ |
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struct in6_addr ip6f_src; /* source address */ |
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struct route ip6f_ro; /* associated route entry */ |
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u_int32_t ip6f_flow; /* flow (tos) */
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u_quad_t ip6f_uses; /* number of uses in this period */
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u_quad_t ip6f_last_uses; /* number of uses in last period */
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u_quad_t ip6f_dropped; /* ENOBUFS returned by if_output */
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u_quad_t ip6f_forwarded; /* packets forwarded */
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u_int ip6f_timer; /* lifetime timer */
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}; |
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#ifdef _KERNEL
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/*
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* Auxiliary attributes of incoming IPv6 packets, which is initialized when we
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* come into ip6_input().
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* XXX do not make it a kitchen sink!
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*/
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struct ip6aux {
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/* ip6.ip6_dst */
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struct in6_addr ip6a_src;
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uint32_t ip6a_scope_id; |
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int ip6a_flags;
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}; |
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/* flags passed to ip6_output as last parameter */
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#define IPV6_UNSPECSRC 0x01 /* allow :: as the source address */ |
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#define IPV6_FORWARDING 0x02 /* most of IPv6 header exists */ |
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#define IPV6_MINMTU 0x04 /* use minimum MTU (IPV6_USE_MIN_MTU) */ |
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extern u_int32_t ip6_id; /* fragment identifier */ |
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extern int ip6_defhlim; /* default hop limit */ |
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extern int ip6_defmcasthlim; /* default multicast hop limit */ |
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extern int ip6_forwarding; /* act as router? */ |
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extern int ip6_sendredirect; /* send ICMPv6 redirect? */ |
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extern int ip6_forward_srcrt; /* forward src-routed? */ |
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extern int ip6_use_deprecated; /* allow deprecated addr as source */ |
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extern int ip6_rr_prune; /* router renumbering prefix |
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* walk list every 5 sec. */
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extern int ip6_mcast_pmtu; /* enable pMTU discovery for multicast? */ |
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extern int ip6_v6only; |
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extern int ip6_neighborgcthresh; /* Threshold # of NDP entries for GC */ |
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extern int ip6_maxifprefixes; /* Max acceptable prefixes via RA per IF */ |
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extern int ip6_maxifdefrouters; /* Max acceptable def routers via RA */ |
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extern int ip6_maxdynroutes; /* Max # of routes created via redirect */ |
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extern struct socket *ip6_mrouter; /* multicast routing daemon */ |
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extern int ip6_sendredirects; /* send IP redirects when forwarding? */ |
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extern int ip6_maxfragpackets; /* Maximum packets in reassembly queue */ |
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extern int ip6_maxfrags; /* Maximum fragments in reassembly queue */ |
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extern int ip6_sourcecheck; /* Verify source interface */ |
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extern int ip6_sourcecheck_interval; /* Interval between log messages */ |
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extern int ip6_accept_rtadv; /* Acts as a host not a router */ |
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extern int ip6_rtadv_maxroutes; /* maximum number of routes via rtadv */ |
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extern int ip6_keepfaith; /* Firewall Aided Internet Translator */ |
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extern int ip6_log_interval; |
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extern time_t ip6_log_time;
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extern int ip6_hdrnestlimit; /* upper limit of # of extension headers */ |
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extern int ip6_dad_count; /* DupAddrDetectionTransmits */ |
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extern int ip6_auto_flowlabel; |
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extern int ip6_auto_linklocal; |
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extern int ip6_anonportmin; /* minimum ephemeral port */ |
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extern int ip6_anonportmax; /* maximum ephemeral port */ |
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extern int ip6_lowportmin; /* minimum reserved port */ |
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extern int ip6_lowportmax; /* maximum reserved port */ |
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extern int ip6_use_tempaddr; /* whether to use temporary addresses. */ |
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extern int ip6_prefer_tempaddr; /* whether to prefer temporary addresses |
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in the source address selection */
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extern int ip6_use_defzone; /* whether to use the default scope zone |
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when unspecified */
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#ifdef GATEWAY
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extern int ip6_maxflows; /* maximum amount of flows for ip6ff */ |
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extern int ip6_hashsize; /* size of hash table */ |
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#endif
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struct in6pcb;
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extern const struct pr_usrreqs rip6_usrreqs; |
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int icmp6_ctloutput(int, struct socket *, struct sockopt *); |
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struct mbuf;
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void ip6_init(void); |
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void ip6_input(struct mbuf *); |
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const struct ip6aux *ip6_getdstifaddr(struct mbuf *); |
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void ip6_freepcbopts(struct ip6_pktopts *); |
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void ip6_freemoptions(struct ip6_moptions *); |
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int ip6_unknown_opt(u_int8_t *, struct mbuf *, int); |
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u_int8_t *ip6_get_prevhdr(struct mbuf *, int); |
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int ip6_nexthdr(struct mbuf *, int, int, int *); |
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int ip6_lasthdr(struct mbuf *, int, int, int *); |
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struct m_tag *ip6_addaux(struct mbuf *); |
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struct m_tag *ip6_findaux(struct mbuf *); |
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void ip6_delaux(struct mbuf *); |
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struct ip6_hdr;
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int ip6_mforward(struct ip6_hdr *, struct ifnet *, struct mbuf *); |
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int ip6_hopopts_input(u_int32_t *, u_int32_t *, struct mbuf **, int *); |
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void ip6_savecontrol(struct in6pcb *, struct mbuf **, struct ip6_hdr *, |
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struct mbuf *);
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void ip6_notify_pmtu(struct in6pcb *, const struct sockaddr_in6 *, |
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u_int32_t *); |
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int ip6_sysctl(int *, u_int, void *, size_t *, void *, size_t); |
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void ip6_forward(struct mbuf *, int); |
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void ip6_mloopback(struct ifnet *, struct mbuf *, |
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const struct sockaddr_in6 *); |
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int ip6_output(struct mbuf *, struct ip6_pktopts *, |
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struct route *, int, |
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struct ip6_moptions *, struct socket *, |
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struct ifnet **);
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int ip6_ctloutput(int, struct socket *, struct sockopt *); |
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int ip6_raw_ctloutput(int, struct socket *, struct sockopt *); |
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void ip6_initpktopts(struct ip6_pktopts *); |
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int ip6_setpktopts(struct mbuf *, struct ip6_pktopts *, |
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struct ip6_pktopts *, kauth_cred_t, int); |
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void ip6_clearpktopts(struct ip6_pktopts *, int); |
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struct ip6_pktopts *ip6_copypktopts(struct ip6_pktopts *, int); |
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int ip6_optlen(struct in6pcb *); |
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void ip6_statinc(u_int);
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int route6_input(struct mbuf **, int *, int); |
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void frag6_init(void); |
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int frag6_input(struct mbuf **, int *, int); |
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int ip6_reass_packet(struct mbuf **, int); |
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void frag6_slowtimo(void); |
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void frag6_fasttimo(void); |
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void frag6_drain(void); |
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void frag6_drainstub(void); |
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int ip6flow_init(int); |
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void ip6flow_poolinit(void); |
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struct ip6flow *ip6flow_reap(int); |
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void ip6flow_create(const struct route *, struct mbuf *); |
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void ip6flow_slowtimo(void); |
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int ip6flow_invalidate_all(int); |
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void rip6_init(void); |
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int rip6_input(struct mbuf **, int *, int); |
| 385 |
void *rip6_ctlinput(int, const struct sockaddr *, void *); |
| 386 |
int rip6_ctloutput(int, struct socket *, struct sockopt *); |
| 387 |
int rip6_output(struct mbuf *, struct socket *, struct sockaddr_in6 *, |
| 388 |
struct mbuf *);
|
| 389 |
int rip6_attach(struct socket *, int); |
| 390 |
int rip6_usrreq(struct socket *, |
| 391 |
int, struct mbuf *, struct mbuf *, struct mbuf *, struct lwp *); |
| 392 |
|
| 393 |
int dest6_input(struct mbuf **, int *, int); |
| 394 |
int none_input(struct mbuf **, int *, int); |
| 395 |
|
| 396 |
struct route;
|
| 397 |
|
| 398 |
struct in6_addr *in6_selectsrc(struct sockaddr_in6 *, |
| 399 |
struct ip6_pktopts *, struct ip6_moptions *, struct route *, |
| 400 |
struct in6_addr *, struct ifnet **, int *); |
| 401 |
int in6_selectroute(struct sockaddr_in6 *, struct ip6_pktopts *, |
| 402 |
struct ip6_moptions *, struct route *, struct ifnet **, |
| 403 |
struct rtentry **, int); |
| 404 |
int ip6_get_membership(const struct sockopt *, struct ifnet **, void *, |
| 405 |
size_t); |
| 406 |
|
| 407 |
u_int32_t ip6_randomid(void);
|
| 408 |
u_int32_t ip6_randomflowlabel(void);
|
| 409 |
#endif /* _KERNEL */ |
| 410 |
|
| 411 |
#endif /* !_NETINET6_IP6_VAR_H_ */ |