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annotate packages/net/tcpip/current/include/netinet6/ipv6_var.h @ 2863:7d8c61e6225c default tip

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* Added execute permissions to files missed in conversion from CVS
author alexs
date Thu, 26 Mar 2009 20:39:18 +0000
parents 74dbf4c3f2e1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 //==========================================================================
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2 //
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3 // include/netinet6_ipv6_var.h
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4 //
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5 //
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6 //
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7 //==========================================================================
2729
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8 // ####BSDALTCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // Portions of this software may have been derived from OpenBSD
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11 // or other sources, and if so are covered by the appropriate copyright
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12 // and license included herein.
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13 // -------------------------------------------
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14 // ####BSDALTCOPYRIGHTEND####
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15 //==========================================================================
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16 //#####DESCRIPTIONBEGIN####
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17 //
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18 // Author(s): gthomas
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19 // Contributors: gthomas
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20 // Date: 2000-01-10
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21 // Purpose:
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22 // Description:
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23 //
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24 //
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25 //####DESCRIPTIONEND####
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26 //
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27 //==========================================================================
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28
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29
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30 /*
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31 %%% copyright-nrl-95
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32 This software is Copyright 1995-1998 by Randall Atkinson, Ronald Lee,
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33 Daniel McDonald, Bao Phan, and Chris Winters. All Rights Reserved. All
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34 rights under this copyright have been assigned to the US Naval Research
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35 Laboratory (NRL). The NRL Copyright Notice and License Agreement Version
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36 1.1 (January 17, 1995) applies to this software.
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37 You should have received a copy of the license with this software. If you
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38 didn't get a copy, you may request one from <license@ipv6.nrl.navy.mil>.
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39
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40 */
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41 #ifndef _NETINET6_IPV6_VAR_H
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42 #define _NETINET6_IPV6_VAR_H 1
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43
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44 #include <netinet6/in6.h>
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45
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46 /*
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47 * IPv6 multicast "options". Session state for multicast, including
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48 * weird per-session multicast things.
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49 */
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50
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51 struct ipv6_moptions
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52 {
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53 struct ifnet *i6mo_multicast_ifp; /* ifp for outgoing multicasts */
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54 u_char i6mo_multicast_ttl; /* TTL for outgoing multicasts.
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55 Does this matter in IPv6? */
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56 u_char i6mo_multicast_loop; /* 1 => hear sends if a member */
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57 u_short i6mo_num_memberships; /* no. memberships this socket */
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58 struct in6_multi *i6mo_membership[IN6_MAX_MEMBERSHIPS];
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59 };
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60
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61 /*
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62 * IPv6 stats.
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63 */
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64
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65 #if defined(_BSDI_VERSION) && _BSDI_VERSION >= 199802
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66 #define _IPV6STAT_TYPE u_quad_t
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67 #else /* defined(_BSDI_VERSION) && _BSDI_VERSION >= 199802 */
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68 #define _IPV6STAT_TYPE u_long
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69 #endif /* defined(_BSDI_VERSION) && _BSDI_VERSION >= 199802 */
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70
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71 struct ipv6stat {
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72 _IPV6STAT_TYPE ips_total; /* total packets received */
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73 _IPV6STAT_TYPE ips_tooshort; /* packet too short */
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74 _IPV6STAT_TYPE ips_toosmall; /* not enough data */
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75 _IPV6STAT_TYPE ips_fragments; /* fragments received */
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76 _IPV6STAT_TYPE ips_fragdropped; /* frags dropped (dups, out of space) */
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77 _IPV6STAT_TYPE ips_fragtimeout; /* fragments timed out */
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78 _IPV6STAT_TYPE ips_forward; /* packets forwarded */
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79 _IPV6STAT_TYPE ips_cantforward; /* packets rcvd for unreachable dest */
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80 _IPV6STAT_TYPE ips_redirectsent; /* packets forwarded on same net */
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81 _IPV6STAT_TYPE ips_noproto; /* unknown or unsupported protocol */
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82 _IPV6STAT_TYPE ips_delivered; /* datagrams delivered to upper level*/
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83 _IPV6STAT_TYPE ips_localout; /* total ip packets generated here */
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84 _IPV6STAT_TYPE ips_odropped; /* lost packets due to nobufs, etc. */
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85 _IPV6STAT_TYPE ips_reassembled; /* total packets reassembled ok */
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86 _IPV6STAT_TYPE ips_fragmented; /* datagrams sucessfully fragmented */
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87 _IPV6STAT_TYPE ips_ofragments; /* output fragments created */
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88 _IPV6STAT_TYPE ips_cantfrag; /* don't fragment flag was set, etc. */
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89 _IPV6STAT_TYPE ips_badoptions; /* error in option processing */
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90 _IPV6STAT_TYPE ips_noroute; /* packets discarded due to no route */
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91 _IPV6STAT_TYPE ips_badvers; /* IPv6 version != 6 */
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92 _IPV6STAT_TYPE ips_rawout; /* total raw ip packets generated */
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93 };
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94
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95 #if defined(_KERNEL) || defined(KERNEL)
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96 /*
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97 * The IPv6 fragment queue entry structure.
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98 * Notes:
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99 * Nodes are stored in ttl order.
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100 * prefix comes from whichever packet gets here first.
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101 * data contains a chain of chains of mbufs (m_next down a chain, m_nextpkt
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102 * chaining chains together) where the chains are ordered by assembly
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103 * position. When two chains are contiguous for reassembly, they are
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104 * combined and the frag header disappears.
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105 * The structure is deliberately sized so MALLOC will round up on the order
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106 * of much less than the total size instead of doubling the size.
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107 */
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108
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109 struct ipv6_fragment
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110 {
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111 struct ipv6_fragment *next; /* Next fragment chain */
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112 struct mbuf *prefix; /* Headers before frag header(s) */
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113 struct mbuf *data; /* Frag headers + whatever data */
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114 u_char ttl; /* Fragment chain TTL. */
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115 u_char flags; /* Bit 0 indicates got end of chain */
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116 };
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117
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118 /*
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119 * Structures and definitions for discovery mechanisms in IPv6.
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120 */
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121
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122 /*
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123 * Neighbor cache:
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124 *
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125 * Number of unanswered probes is in discq.
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126 * "Time of next event" will be in rt->rt_rmx.rmx_expire
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127 * (rmx_expire will actually be quite overloaded, actually.)
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128 * Status REACHABLE will be dq_unanswered < 0
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129 * Status PROBE will be dq_unanswered >= 0
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130 * Status INCOMPLETE will be link addr length of 0 if held,
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131 * or deleted if not held.
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132 *
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133 * If held, but INCOMPLETE fails set RTF_REJECT and make sure
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134 * IPv6 and HLP's know how to deal with RTF_REJECT being set.
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135 */
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136
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137 struct discq /* Similar to v4's llinfo_arp, discovery's "neighbor entry". */
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138 {
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139 struct discq *dq_next,*dq_prev; /* For {ins,rem}que(). */
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140 struct rtentry *dq_rt; /* Back pointer to routing entry for
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141 an address that may be dead. */
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142 struct mbuf *dq_queue; /* Queue of outgoing messages. */
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143 int dq_unanswered; /* Number of unanswered probes. */
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144 };
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145
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146 #if !defined(_BSDI_VERSION) || (_BSDI_VERSION < 199802)
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147 /* Routing flag redefinitions */
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148 #define RTF_ISAROUTER RTF_PROTO2 /* Neighbor is a router. */
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149 #define RTF_DEFAULT RTF_PROTO1 /* Default route. */
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150 #endif /* !defined(_BSDI_VERSION) || (_BSDI_VERSION < 199802) */
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151
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152 /*
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153 * These should be configurable parameters, see ipv6_discovery.c.
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154 * All units are in comments besides constants.
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155 */
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156
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157 #define MAX_INITIAL_RTR_ADVERT_INTERVAL 16 /* seconds */
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158 #define MAX_INITIAL_RTR_ADVERTISEMENTS 3 /* transmissions */
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159 #define MAX_RTR_RESPONSE_DELAY 2 /* seconds */
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160
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161 #define MAX_RTR_SOLICITATION_DELAY 1 /* second */
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162 #define RTR_SOLICITATION_INTERVAL 3 /* seconds */
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163 #define MAX_RTR_SOLICITATIONS 3 /* transmissions */
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164
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165 #define MAX_MULTICAST_SOLICIT 3 /* transmissions */
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166 #define MAX_UNICAST_SOLICIT 3 /* transmissions */
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167 #define MAX_ANYCAST_DELAY_TIME 1 /* seconds */
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168 #define MAX_NEIGHBOR_ADVERTISEMENTS 3 /* transmissions */
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169 #define MIN_NEIGHBOR_ADVERT_INTERVAL 16 /* seconds */
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170 #define REACHABLE_TIME 30 /* seconds */
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171 #define RETRANS_TIMER 3 /* seconds */
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172 #define DELAY_FIRST_PROBE_TIME 3 /* seconds */
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173 /* Need to somehow define random factors. */
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174
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175 #define NEXTHOP_CLEAN_INTERVAL 600 /* seconds */
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176 #define REJECT_TIMER 20 /* seconds */
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177
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178 /*
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179 * Child of a router or tunnel. Is a "meta-entry" for garbage collection.
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180 */
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181
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182 struct v6child
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183 {
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184 struct v6child *v6c_next,*v6c_prev; /* For {ins,rem}que() */
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185 struct v6router *v6c_parent; /* Parent router. I'm null if
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186 I'm the router, or a tunnel
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187 child. */
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188 struct rtentry *v6c_route; /* Next-hop cache entry. I won't
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189 be holding it, but I'm attached
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190 to it, like discq is to neighbor
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191 cache entries. */
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192 };
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193
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194 /*
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195 * Default router list entry. Should be inserted
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196 * in priority order. Will also have entries for non-
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197 * default routers, because I may be a router myself.
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198 */
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199
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200 struct v6router
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201 {
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202 struct v6router *v6r_next,*v6r_prev; /* For {ins,rem}que() */
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203 struct rtentry *v6r_rt; /* Route for this. Could be neighbor,
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204 could be tunnel. */
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205 struct v6child v6r_children; /* Children of this router. */
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206
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207 /* Metric information? */
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208 uint32_t v6r_expire; /* Expiration time. */
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209 };
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210 #define V6R_SIN6(v6r) ((struct sockaddr_in6 *)rt_key((v6r)->v6r_rt))
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211
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212 /*
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213 * Flags for "flags" argument in ipv6_output().
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214 */
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215
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216 #define IPV6_FORWARDING 0x1 /* Most of IPv6 header exists? */
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217 #define IPV6_RAWOUTPUT 0x2 /* Raw IPv6 packet! */
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218 #define IPV6_ROUTETOIF SO_DONTROUTE /* Include sys/socket.h... */
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219
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220 void ipv6_init __P((void));
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221 void ipv6_drain __P((void));
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222 void ipv6_slowtimo __P((void));
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223 int ipv6_sysctl __P((int *, uint, void *, size_t *, void *, size_t));
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224 struct route6;
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225
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226 #if __FreeBSD__
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227 int ipv6_ctloutput __P((struct socket *, struct sockopt *));
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228 int ripv6_ctloutput __P((struct socket *, struct sockopt *));
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229 #else /* __FreeBSD__ */
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230 int ipv6_ctloutput __P((int, struct socket *,int,int, struct mbuf **));
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231 int ripv6_ctloutput __P((int, struct socket *, int, int, struct mbuf **));
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232 #endif /* __FreeBSD__ */
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233 void ripv6_init __P((void));
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234 #if __OpenBSD__
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235 void ripv6_input __P((struct mbuf *, ...));
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236 int ripv6_output __P((struct mbuf *, ...));
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237 #else /* __OpenBSD__ */
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238 void ripv6_input __P((struct mbuf *, int));
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239 int ripv6_output __P((struct mbuf *, struct socket *, struct in6_addr *, struct mbuf *));
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240 #endif /* __OpenBSD__ */
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241
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242 #if __NetBSD__ || __FreeBSD__
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243 int ripv6_usrreq_send(struct socket *, int, struct mbuf *, struct sockaddr *,
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244 struct mbuf *, struct proc *);
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245 #else /* __NetBSD__ || __FreeBSD__ */
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246 int ripv6_usrreq_send(struct socket *, int, struct mbuf *, struct sockaddr *,
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247 struct mbuf *);
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248 #endif /* __NetBSD__ || __FreeBSD__ */
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249
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250 #if __FreeBSD__
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251 int ripv6_usrreq_abort(struct socket *);
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252 int ripv6_usrreq_attach(struct socket *, int , struct proc *);
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253 int ripv6_usrreq_bind(struct socket *, struct sockaddr *, struct proc *);
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254 int ripv6_usrreq_connect(struct socket *, struct sockaddr *, struct proc *);
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255 int ripv6_usrreq_control(struct socket *, u_long, caddr_t, struct ifnet *,
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256 struct proc *);
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257 int ripv6_usrreq_detach(struct socket *);
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258 int ripv6_usrreq_peeraddr(struct socket *, struct sockaddr **);
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259 int ripv6_usrreq_sense(struct socket *, struct stat *);
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260 int ripv6_usrreq_shutdown(struct socket *);
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261 int ripv6_usrreq_sockaddr(struct socket *, struct sockaddr **);
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262 #else /* __FreeBSD__ */
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263 #if __NetBSD__
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264 int ripv6_usrreq __P((struct socket *, int, struct mbuf *, struct mbuf *,
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265 struct mbuf *, struct proc *));
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266 #else /* __NetBSD__ */
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267 int ripv6_usrreq __P((struct socket *, int, struct mbuf *, struct mbuf *,
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268 struct mbuf *));
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269 #endif /* __NetBSD__ */
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270 #endif /* __FreeBSD__ */
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271
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272 #if __OpenBSD__
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273 void ipv6_input __P((struct mbuf *, ...));
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274 int ipv6_output __P((struct mbuf *, ...));
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275 #else /* __OpenBSD__ */
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276 void ipv6_input __P((struct mbuf *, int));
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277 int ipv6_output __P((struct mbuf *, struct route6 *, int, struct ipv6_moptions *, struct ifnet *, struct socket *));
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278 #endif /* __OpenBSD__ */
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279 void ipv6_reasm __P((struct mbuf *, int));
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280 void ipv6_hop __P((struct mbuf *, int));
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281
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282 #if __FreeBSD__
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283 int in6_control __P((struct socket *,int, caddr_t, struct ifnet *,int, struct proc *));
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284 #else /* __FreeBSD__ */
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285 #if __NetBSD__
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286 int in6_control __P((struct socket *,u_long, caddr_t, struct ifnet *,int, struct proc *));
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287 #else /* __NetBSD__ */
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288 int in6_control __P((struct socket *,int, caddr_t, struct ifnet *,int));
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289 #endif /* __NetBSD__ */
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290 #endif /* __FreeBSD__ */
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291 void ipv6_stripoptions __P((struct mbuf *, int));
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292 struct in6_multi *in6_addmulti __P((struct in6_addr *,struct ifnet *));
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293 void in6_delmulti __P((struct in6_multi *));
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294
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295 #if __FreeBSD__
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296 /* ripv6_usrreq and ipv6_icmp_usrreq functions */
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297 extern struct pr_usrreqs ripv6_usrreqs;
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298 extern struct pr_usrreqs ipv6_icmp_usrreqs;
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299
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300 extern int ripv6_usr_attach(struct socket *, int , struct proc *);
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301 extern int ripv6_usr_disconnect(struct socket *);
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302 extern int ripv6_usr_abort(struct socket *);
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303 extern int ripv6_usr_detach(struct socket *);
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304 extern int ripv6_usr_bind(struct socket *, struct sockaddr *, struct proc *);
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305 extern int ripv6_usr_connect(struct socket *, struct sockaddr *, struct proc *);
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306 extern int ripv6_usr_shutdown(struct socket *);
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307 extern int ripv6_usr_send(struct socket *, int, struct mbuf *,
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308 struct sockaddr *, struct mbuf *, struct proc *);
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309 extern int ripv6_usr_control(struct socket *, int, caddr_t,
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310 struct ifnet *, struct proc *);
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311 extern int ripv6_usr_sense(struct socket *, struct stat *);
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312 extern int ripv6_usr_sockaddr(struct socket *, struct sockaddr **);
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313 extern int ripv6_usr_peeraddr(struct socket *, struct sockaddr **);
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314 #endif /* __FreeBSD__ */
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315
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316 extern int ipv6_icmp_send(struct socket *, int, struct mbuf *,
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317 struct sockaddr *, struct mbuf *, struct proc *);
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318
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319 #if __OpenBSD__
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320 #ifdef NRL_IPSEC
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321 void *ipv6_trans_ctlinput __P((int, struct sockaddr *, void *, struct mbuf *));
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322 #else /* NRL_IPSEC */
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323 void *ipv6_trans_ctlinput __P((int, struct sockaddr *, void *));
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324 #endif /* NRL_IPSEC */
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325 #else /* __OpenBSD__ */
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326 struct ip;
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327 #ifdef NRL_IPSEC
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328 void ipv6_trans_ctlinput __P((int, struct sockaddr *, struct ip *, struct mbuf *));
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329 #else /* NRL_IPSEC */
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330 void ipv6_trans_ctlinput __P((int, struct sockaddr *, struct ip *));
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331 #endif /* NRL_IPSEC */
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332 #endif /* __OpenBSD__ */
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333
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334 /* These might belong in in_pcb.h */
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335 struct inpcb;
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336 #if __FreeBSD__
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337 /*
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338 * FreeBSD, having done away with the *_usrreq() functions no longer needs to
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339 * pass mbufs to these functions. Thus they pass in sockaddrs instead.
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340 */
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341 int in6_pcbbind(struct inpcb *, struct sockaddr *);
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342 int in6_pcbconnect(struct inpcb *, struct sockaddr *);
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343 int in6_setsockaddr(struct inpcb *, struct sockaddr **);
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344 int in6_setpeeraddr(struct inpcb *, struct sockaddr **);
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345 #else /* __FreeBSD__ */
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346 int in6_pcbbind(struct inpcb *, struct mbuf *);
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347 int in6_pcbconnect(struct inpcb *, struct mbuf *);
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348 int in6_setsockaddr(struct inpcb *, struct mbuf *);
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349 int in6_setpeeraddr(struct inpcb *, struct mbuf *);
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350 #endif /* __FreeBSD__ */
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351 void ipv6_onlink_query(struct sockaddr_in6 *);
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352 int ipv6_verify_onlink(struct sockaddr_in6 *);
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353
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354 #if __FreeBSD__
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355 struct inpcbhead; /* XXX? Forward declaration needed. */
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356 #define __IN6_PCBNOTIFY_FIRSTARG struct inpcbhead *
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357 #endif /* __FreeBSD__ */
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358 #if __NetBSD__ || __OpenBSD__
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359 struct inpcbtable;
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360 #define __IN6_PCBNOTIFY_FIRSTARG struct inpcbtable *
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361 #endif /* __NetBSD__ || __OpenBSD__ */
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362 #if __bsdi__
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363 struct inpcb;
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364 #define __IN6_PCBNOTIFY_FIRSTARG struct inpcb *
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365 #endif /* __bsdi__ */
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366
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367 #if (!__OpenBSD__ && defined(IPSEC)) || (__OpenBSD__ && defined(NRL_IPSEC))
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368 int in6_pcbnotify __P((__IN6_PCBNOTIFY_FIRSTARG, struct sockaddr *, uint,
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369 struct in6_addr *, uint, int, void (*)(struct inpcb *,
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370 int), struct mbuf *, int));
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371 #else /* (!__OpenBSD__ && defined(IPSEC)) || (__OpenBSD__ && defined(NRL_IPSEC)) */
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372 int in6_pcbnotify __P((__IN6_PCBNOTIFY_FIRSTARG, struct sockaddr *, uint,
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373 struct in6_addr *, uint, int, void (*)(struct inpcb *,
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374 int)));
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375 #endif /* (!__OpenBSD__ && defined(IPSEC)) || (__OpenBSD__ && defined(NRL_IPSEC)) */
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376
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377 #undef __IN6_PCBNOTIFY_FIRSTARG
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378
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379 void ipv6_freemoptions __P((struct ipv6_moptions *));
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380
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381 int ipv6_controltoheader(struct mbuf **m, struct mbuf *control, struct ifnet **forceifp, int *);
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382 struct mbuf *ipv6_headertocontrol(struct mbuf *m, int extra, int inp_flags);
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383 #endif /* defined(_KERNEL) || defined(KERNEL) */
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384
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385 #endif /* _NETINET6_IPV6_VAR_H */