1 | /* |
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2 | * Copyright (c) 1989 Stephen Deering. |
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3 | * Copyright (c) 1992, 1993 |
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4 | * The Regents of the University of California. All rights reserved. |
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5 | * |
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6 | * This code is derived from software contributed to Berkeley by |
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7 | * Stephen Deering of Stanford University. |
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8 | * |
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9 | * Redistribution and use in source and binary forms, with or without |
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10 | * modification, are permitted provided that the following conditions |
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11 | * are met: |
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12 | * 1. Redistributions of source code must retain the above copyright |
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13 | * notice, this list of conditions and the following disclaimer. |
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14 | * 2. Redistributions in binary form must reproduce the above copyright |
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15 | * notice, this list of conditions and the following disclaimer in the |
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16 | * documentation and/or other materials provided with the distribution. |
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17 | * 3. All advertising materials mentioning features or use of this software |
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18 | * must display the following acknowledgement: |
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19 | * This product includes software developed by the University of |
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20 | * California, Berkeley and its contributors. |
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21 | * 4. Neither the name of the University nor the names of its contributors |
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22 | * may be used to endorse or promote products derived from this software |
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23 | * without specific prior written permission. |
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24 | * |
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25 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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26 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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28 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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30 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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31 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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32 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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33 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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34 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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35 | * SUCH DAMAGE. |
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36 | * |
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37 | * @(#)ip_mroute.h 8.1 (Berkeley) 6/10/93 |
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38 | * $Id$ |
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39 | */ |
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40 | |
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41 | #ifndef _NETINET_IP_MROUTE_H_ |
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42 | #define _NETINET_IP_MROUTE_H_ |
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43 | |
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44 | /* |
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45 | * Definitions for IP multicast forwarding. |
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46 | * |
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47 | * Written by David Waitzman, BBN Labs, August 1988. |
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48 | * Modified by Steve Deering, Stanford, February 1989. |
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49 | * Modified by Ajit Thyagarajan, PARC, August 1993. |
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50 | * Modified by Ajit Thyagarajan, PARC, August 1994. |
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51 | * |
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52 | * MROUTING Revision: 3.3.1.3 |
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53 | */ |
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54 | |
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55 | |
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56 | /* |
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57 | * Multicast Routing set/getsockopt commands. |
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58 | */ |
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59 | #define MRT_INIT 100 /* initialize forwarder */ |
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60 | #define MRT_DONE 101 /* shut down forwarder */ |
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61 | #define MRT_ADD_VIF 102 /* create virtual interface */ |
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62 | #define MRT_DEL_VIF 103 /* delete virtual interface */ |
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63 | #define MRT_ADD_MFC 104 /* insert forwarding cache entry */ |
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64 | #define MRT_DEL_MFC 105 /* delete forwarding cache entry */ |
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65 | #define MRT_VERSION 106 /* get kernel version number */ |
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66 | #define MRT_ASSERT 107 /* enable PIM assert processing */ |
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67 | |
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68 | |
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69 | #define GET_TIME(t) microtime(&t) |
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70 | |
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71 | /* |
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72 | * Types and macros for handling bitmaps with one bit per virtual interface. |
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73 | */ |
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74 | #define MAXVIFS 32 |
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75 | typedef u_long vifbitmap_t; |
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76 | typedef u_short vifi_t; /* type of a vif index */ |
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77 | #define ALL_VIFS (vifi_t)-1 |
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78 | |
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79 | #define VIFM_SET(n, m) ((m) |= (1 << (n))) |
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80 | #define VIFM_CLR(n, m) ((m) &= ~(1 << (n))) |
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81 | #define VIFM_ISSET(n, m) ((m) & (1 << (n))) |
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82 | #define VIFM_CLRALL(m) ((m) = 0x00000000) |
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83 | #define VIFM_COPY(mfrom, mto) ((mto) = (mfrom)) |
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84 | #define VIFM_SAME(m1, m2) ((m1) == (m2)) |
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85 | |
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86 | |
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87 | /* |
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88 | * Argument structure for MRT_ADD_VIF. |
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89 | * (MRT_DEL_VIF takes a single vifi_t argument.) |
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90 | */ |
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91 | struct vifctl { |
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92 | vifi_t vifc_vifi; /* the index of the vif to be added */ |
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93 | u_char vifc_flags; /* VIFF_ flags defined below */ |
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94 | u_char vifc_threshold; /* min ttl required to forward on vif */ |
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95 | u_int vifc_rate_limit; /* max rate */ |
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96 | struct in_addr vifc_lcl_addr; /* local interface address */ |
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97 | struct in_addr vifc_rmt_addr; /* remote address (tunnels only) */ |
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98 | }; |
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99 | |
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100 | #define VIFF_TUNNEL 0x1 /* vif represents a tunnel end-point */ |
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101 | #define VIFF_SRCRT 0x2 /* tunnel uses IP source routing */ |
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102 | |
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103 | /* |
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104 | * Argument structure for MRT_ADD_MFC and MRT_DEL_MFC |
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105 | * (mfcc_tos to be added at a future point) |
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106 | */ |
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107 | struct mfcctl { |
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108 | struct in_addr mfcc_origin; /* ip origin of mcasts */ |
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109 | struct in_addr mfcc_mcastgrp; /* multicast group associated*/ |
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110 | vifi_t mfcc_parent; /* incoming vif */ |
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111 | u_char mfcc_ttls[MAXVIFS]; /* forwarding ttls on vifs */ |
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112 | }; |
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113 | |
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114 | /* |
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115 | * The kernel's multicast routing statistics. |
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116 | */ |
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117 | struct mrtstat { |
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118 | u_long mrts_mfc_lookups; /* # forw. cache hash table hits */ |
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119 | u_long mrts_mfc_misses; /* # forw. cache hash table misses */ |
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120 | u_long mrts_upcalls; /* # calls to mrouted */ |
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121 | u_long mrts_no_route; /* no route for packet's origin */ |
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122 | u_long mrts_bad_tunnel; /* malformed tunnel options */ |
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123 | u_long mrts_cant_tunnel; /* no room for tunnel options */ |
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124 | u_long mrts_wrong_if; /* arrived on wrong interface */ |
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125 | u_long mrts_upq_ovflw; /* upcall Q overflow */ |
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126 | u_long mrts_cache_cleanups; /* # entries with no upcalls */ |
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127 | u_long mrts_drop_sel; /* pkts dropped selectively */ |
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128 | u_long mrts_q_overflow; /* pkts dropped - Q overflow */ |
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129 | u_long mrts_pkt2large; /* pkts dropped - size > BKT SIZE */ |
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130 | u_long mrts_upq_sockfull; /* upcalls dropped - socket full */ |
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131 | }; |
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132 | |
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133 | /* |
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134 | * Argument structure used by mrouted to get src-grp pkt counts |
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135 | */ |
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136 | struct sioc_sg_req { |
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137 | struct in_addr src; |
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138 | struct in_addr grp; |
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139 | u_long pktcnt; |
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140 | u_long bytecnt; |
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141 | u_long wrong_if; |
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142 | }; |
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143 | |
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144 | /* |
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145 | * Argument structure used by mrouted to get vif pkt counts |
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146 | */ |
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147 | struct sioc_vif_req { |
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148 | vifi_t vifi; /* vif number */ |
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149 | u_long icount; /* Input packet count on vif */ |
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150 | u_long ocount; /* Output packet count on vif */ |
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151 | u_long ibytes; /* Input byte count on vif */ |
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152 | u_long obytes; /* Output byte count on vif */ |
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153 | }; |
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154 | |
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155 | |
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156 | /* |
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157 | * The kernel's virtual-interface structure. |
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158 | */ |
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159 | struct vif { |
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160 | u_char v_flags; /* VIFF_ flags defined above */ |
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161 | u_char v_threshold; /* min ttl required to forward on vif*/ |
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162 | u_int v_rate_limit; /* max rate */ |
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163 | struct tbf *v_tbf; /* token bucket structure at intf. */ |
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164 | struct in_addr v_lcl_addr; /* local interface address */ |
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165 | struct in_addr v_rmt_addr; /* remote address (tunnels only) */ |
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166 | struct ifnet *v_ifp; /* pointer to interface */ |
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167 | u_long v_pkt_in; /* # pkts in on interface */ |
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168 | u_long v_pkt_out; /* # pkts out on interface */ |
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169 | u_long v_bytes_in; /* # bytes in on interface */ |
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170 | u_long v_bytes_out; /* # bytes out on interface */ |
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171 | struct route v_route; /* cached route if this is a tunnel */ |
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172 | u_int v_rsvp_on; /* RSVP listening on this vif */ |
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173 | struct socket *v_rsvpd; /* RSVP daemon socket */ |
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174 | }; |
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175 | |
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176 | /* |
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177 | * The kernel's multicast forwarding cache entry structure |
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178 | * (A field for the type of service (mfc_tos) is to be added |
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179 | * at a future point) |
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180 | */ |
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181 | struct mfc { |
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182 | struct in_addr mfc_origin; /* IP origin of mcasts */ |
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183 | struct in_addr mfc_mcastgrp; /* multicast group associated*/ |
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184 | vifi_t mfc_parent; /* incoming vif */ |
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185 | u_char mfc_ttls[MAXVIFS]; /* forwarding ttls on vifs */ |
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186 | u_long mfc_pkt_cnt; /* pkt count for src-grp */ |
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187 | u_long mfc_byte_cnt; /* byte count for src-grp */ |
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188 | u_long mfc_wrong_if; /* wrong if for src-grp */ |
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189 | int mfc_expire; /* time to clean entry up */ |
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190 | struct timeval mfc_last_assert; /* last time I sent an assert*/ |
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191 | }; |
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192 | |
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193 | /* |
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194 | * Struct used to communicate from kernel to multicast router |
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195 | * note the convenient similarity to an IP packet |
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196 | */ |
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197 | struct igmpmsg { |
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198 | u_long unused1; |
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199 | u_long unused2; |
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200 | u_char im_msgtype; /* what type of message */ |
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201 | #define IGMPMSG_NOCACHE 1 |
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202 | #define IGMPMSG_WRONGVIF 2 |
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203 | u_char im_mbz; /* must be zero */ |
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204 | u_char im_vif; /* vif rec'd on */ |
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205 | u_char unused3; |
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206 | struct in_addr im_src, im_dst; |
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207 | }; |
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208 | |
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209 | /* |
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210 | * Argument structure used for pkt info. while upcall is made |
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211 | */ |
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212 | struct rtdetq { |
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213 | struct mbuf *m; /* A copy of the packet */ |
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214 | struct ifnet *ifp; /* Interface pkt came in on */ |
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215 | vifi_t xmt_vif; /* Saved copy of imo_multicast_vif */ |
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216 | #ifdef UPCALL_TIMING |
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217 | struct timeval t; /* Timestamp */ |
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218 | #endif /* UPCALL_TIMING */ |
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219 | }; |
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220 | |
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221 | #define MFCTBLSIZ 256 |
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222 | #if (MFCTBLSIZ & (MFCTBLSIZ - 1)) == 0 /* from sys:route.h */ |
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223 | #define MFCHASHMOD(h) ((h) & (MFCTBLSIZ - 1)) |
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224 | #else |
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225 | #define MFCHASHMOD(h) ((h) % MFCTBLSIZ) |
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226 | #endif |
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227 | |
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228 | #define MAX_UPQ 4 /* max. no of pkts in upcall Q */ |
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229 | |
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230 | /* |
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231 | * Token Bucket filter code |
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232 | */ |
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233 | #define MAX_BKT_SIZE 10000 /* 10K bytes size */ |
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234 | #define MAXQSIZE 10 /* max # of pkts in queue */ |
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235 | |
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236 | /* |
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237 | * the token bucket filter at each vif |
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238 | */ |
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239 | struct tbf |
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240 | { |
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241 | struct timeval tbf_last_pkt_t; /* arr. time of last pkt */ |
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242 | u_long tbf_n_tok; /* no of tokens in bucket */ |
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243 | u_long tbf_q_len; /* length of queue at this vif */ |
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244 | u_long tbf_max_q_len; /* max. queue length */ |
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245 | struct mbuf *tbf_q; /* Packet queue */ |
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246 | struct mbuf *tbf_t; /* tail-insertion pointer */ |
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247 | }; |
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248 | |
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249 | #ifdef _KERNEL |
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250 | |
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251 | extern int (*ip_mrouter_set) __P((int, struct socket *, struct mbuf *)); |
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252 | extern int (*ip_mrouter_get) __P((int, struct socket *, struct mbuf **)); |
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253 | extern int (*ip_mrouter_done) __P((void)); |
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254 | #ifdef MROUTING |
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255 | extern int (*mrt_ioctl) __P((int, caddr_t)); |
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256 | #else |
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257 | extern int (*mrt_ioctl) __P((int, caddr_t, struct proc *)); |
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258 | #endif |
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259 | |
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260 | #endif /* _KERNEL */ |
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261 | |
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262 | #endif /* _NETINET_IP_MROUTE_H_ */ |
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