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annotate packages/net/common/current/src/network_support.c @ 504:43dbc9753e8f

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* src/network_support.c (init_all_network_interfaces): Define buf as const.
author jlarmour
date Sat, 18 Jan 2003 04:19:25 +0000
parents 87027e29073d
children db3e0a2fda2f
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1 //==========================================================================
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2 //
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3 // network_support.c
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4 //
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5 // Misc network support functions
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6 //
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7 //==========================================================================
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8 //####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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12 // Copyright (C) 2003 Andrew Lunn <andrew.lunn@ascom.ch>
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13 //
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14 // eCos is free software; you can redistribute it and/or modify it under
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15 // the terms of the GNU General Public License as published by the Free
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16 // Software Foundation; either version 2 or (at your option) any later version.
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17 //
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18 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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19 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21 // for more details.
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22 //
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23 // You should have received a copy of the GNU General Public License along
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24 // with eCos; if not, write to the Free Software Foundation, Inc.,
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25 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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26 //
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27 // As a special exception, if other files instantiate templates or use macros
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28 // or inline functions from this file, or you compile this file and link it
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29 // with other works to produce a work based on this file, this file does not
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30 // by itself cause the resulting work to be covered by the GNU General Public
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31 // License. However the source code for this file must still be made available
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32 // in accordance with section (3) of the GNU General Public License.
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33 //
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34 // This exception does not invalidate any other reasons why a work based on
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35 // this file might be covered by the GNU General Public License.
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36 //
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37 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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38 // at http://sources.redhat.com/ecos/ecos-license/
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39 // -------------------------------------------
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40 //####ECOSGPLCOPYRIGHTEND####
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41 //==========================================================================
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42 //#####DESCRIPTIONBEGIN####
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43 //
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44 // Author(s): gthomas
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45 // Contributors: gthomas, sorin@netappi.com ("Sorin Babeanu"), hmt, jlarmour,
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46 // andrew.lunn@ascom.ch
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47 // Date: 2000-01-10
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48 // Purpose:
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49 // Description:
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50 //
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51 //
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52 //####DESCRIPTIONEND####
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53 //
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54 //==========================================================================
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55
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56 // BOOTP support
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57
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58 #include <pkgconf/net.h>
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59 #undef _KERNEL
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60 #include <sys/param.h>
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61 #include <sys/socket.h>
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62 #include <sys/ioctl.h>
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63 #include <sys/errno.h>
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64
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65 #include <net/if.h>
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66 #include <netinet/in.h>
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67 #include <netinet/ip.h>
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68 #include <netinet/ip_icmp.h>
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69 #include <net/route.h>
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70
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71 #include <cyg/infra/diag.h>
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72 #include <cyg/kernel/kapi.h>
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73
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74 #include <stdio.h> // for 'sprintf()'
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75
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76 #include <bootp.h>
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77 #include <network.h>
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78 #include <arpa/inet.h>
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79
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80 #ifdef CYGPKG_IO_PCMCIA
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81 #include <cyg/io/eth/netdev.h>
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82 #endif
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83
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84 #ifdef CYGPKG_NET_DHCP
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85 #include <dhcp.h>
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86 #endif
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87
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88 #ifdef CYGPKG_NS_DNS
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89 #include <pkgconf/ns_dns.h>
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90 #endif
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91
208
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92 #ifdef CYGHWR_NET_DRIVER_ETH0
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93 struct bootp eth0_bootp_data;
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94 cyg_bool_t eth0_up = false;
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95 const char *eth0_name = "eth0";
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96 #endif
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97 #ifdef CYGHWR_NET_DRIVER_ETH1
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98 struct bootp eth1_bootp_data;
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99 cyg_bool_t eth1_up = false;
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100 const char *eth1_name = "eth1";
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101 #endif
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102
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103 #define _string(s) #s
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104 #define string(s) _string(s)
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105
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106 #ifndef CYGPKG_LIBC_STDIO
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107 #define perror(s) diag_printf(#s ": %s\n", strerror(errno))
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108 #endif
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109
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110 #ifdef CYGPKG_NET_NLOOP
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111 #if 0 < CYGPKG_NET_NLOOP
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112 //
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113 // Initialize loopback interface ---------- Added by sorin@netappi.com
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114 //
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115 cyg_bool_t init_loopback_interface(int lo)
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116 {
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117 struct sockaddr_in *addrp;
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118 struct ifreq ifr;
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119 int s;
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120 int one = 1;
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121 struct ecos_rtentry route;
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122 struct in_addr netmask, gateway;
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123
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124 s = socket(AF_INET, SOCK_DGRAM, 0);
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125 if (s < 0) {
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126 perror("socket");
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127 return false;
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128 }
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129 if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, &one, sizeof(one))) {
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130 perror("setsockopt");
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131 return false;
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132 }
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133
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134 addrp = (struct sockaddr_in *) &ifr.ifr_addr;
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135 memset(addrp, 0, sizeof(*addrp));
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136 addrp->sin_family = AF_INET;
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137 addrp->sin_len = sizeof(*addrp);
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138 addrp->sin_port = 0;
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139 // Make an address 127.0.<lo>.1 to manage multiple loopback ifs.
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140 // (There is normally only 1, so it's the standard 127.0.0.1)
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141 addrp->sin_addr.s_addr = htonl((0x100 * lo) + INADDR_LOOPBACK) ;
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142
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143 #if CYGPKG_NET_NLOOP > 1
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144 // Init the one we were told to
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145 sprintf(ifr.ifr_name, "lo%d", lo);
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146 #else
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147 strcpy(ifr.ifr_name, "lo0");
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148 #endif
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149
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150 if (ioctl(s, SIOCSIFADDR, &ifr)) {
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151 perror("SIOCIFADDR");
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152 return false;
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153 }
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154
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155 #if 1 < CYGPKG_NET_NLOOP
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156 // We cheat to make different nets for multiple loopback devs
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157 addrp->sin_addr.s_addr = netmask.s_addr = htonl(IN_CLASSC_NET);
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158 #else
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159 //
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160 addrp->sin_addr.s_addr = netmask.s_addr = htonl(IN_CLASSA_NET);
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161 #endif
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162 if (ioctl(s, SIOCSIFNETMASK, &ifr)) {
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163 perror("SIOCSIFNETMASK");
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164 return false;
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165 }
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166 ifr.ifr_flags = IFF_UP | IFF_BROADCAST | IFF_RUNNING;
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167 if (ioctl(s, SIOCSIFFLAGS, &ifr)) {
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168 perror("SIOCSIFFLAGS");
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169 return false;
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170 }
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171
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172 gateway.s_addr = htonl(INADDR_LOOPBACK);
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173 memset(&route, 0, sizeof(route));
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174 addrp->sin_family = AF_INET;
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175 addrp->sin_len = sizeof(*addrp);
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176 addrp->sin_port = 0;
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177 addrp->sin_addr.s_addr = htonl((0x100 * lo) + INADDR_LOOPBACK) & netmask.s_addr;
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178 memcpy(&route.rt_dst, addrp, sizeof(*addrp));
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179 addrp->sin_addr = netmask;
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180 memcpy(&route.rt_genmask, addrp, sizeof(*addrp));
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181 addrp->sin_addr = gateway;
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182 memcpy(&route.rt_gateway, addrp, sizeof(*addrp));
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183
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184 route.rt_dev = ifr.ifr_name;
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185 route.rt_flags = RTF_UP|RTF_GATEWAY;
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186 route.rt_metric = 0;
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187
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188 if (ioctl(s, SIOCADDRT, &route)) {
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189 diag_printf("Route - dst: %s", inet_ntoa(((struct sockaddr_in *)&route.rt_dst)->sin_addr));
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190 diag_printf(", mask: %s", inet_ntoa(((struct sockaddr_in *)&route.rt_genmask)->sin_addr));
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191 diag_printf(", gateway: %s\n", inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr));
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192 if (errno != EEXIST) {
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193 perror("SIOCADDRT 3");
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194 return false;
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195 }
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196 }
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197 close(s);
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198 return true;
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199 }
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200 #endif
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201 #endif
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202
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203
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204 //
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205 // Internal function which builds up a fake BOOTP database for
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206 // an interface.
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207 //
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208
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209 static unsigned char *
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210 add_tag(unsigned char *vp,
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211 unsigned char tag,
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212 void *val,
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213 int len)
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214 {
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215 int i;
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216 unsigned char *xp = (unsigned char *)val;
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217 *vp++ = tag;
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218 *vp++ = len;
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219 for (i = 0; i < len; i++) {
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220 *vp++ = *xp++;
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221 }
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222 return vp;
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223 }
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224
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225 void
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226 build_bootp_record(struct bootp *bp,
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227 const char *if_name,
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228 const char *addrs_ip,
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229 const char *addrs_netmask,
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230 const char *addrs_broadcast,
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231 const char *addrs_gateway,
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232 const char *addrs_server)
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233 {
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234 int i, s;
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235 in_addr_t addr;
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236 unsigned char *vp;
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237 unsigned char cookie[] = VM_RFC1048;
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238 struct ifreq ifr;
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239
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240 bzero(bp, sizeof(struct bootp));
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241 bp->bp_op = BOOTREPLY;
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242 bp->bp_htype = HTYPE_ETHERNET;
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243 bp->bp_hlen = 6;
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244
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245 // Query the hardware address
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246 for (i = 0; i < bp->bp_hlen; i++) {
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247 bp->bp_chaddr[i] = 0xFF; // Unknown
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248 }
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249 s = socket(AF_INET, SOCK_DGRAM, 0);
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250 if (s >= 0) {
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251 strcpy(ifr.ifr_name, if_name);
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252 if (ioctl(s, SIOCGIFHWADDR, &ifr) >= 0) {
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253 bcopy(ifr.ifr_hwaddr.sa_data, bp->bp_chaddr, bp->bp_hlen);
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254 }
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255 close(s);
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256 }
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257
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258 // Fill in the provided IP addresses
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259 bp->bp_ciaddr.s_addr = inet_addr(addrs_ip);
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260 bp->bp_yiaddr.s_addr = inet_addr(addrs_ip);
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261 bp->bp_siaddr.s_addr = inet_addr(addrs_server);
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262 bp->bp_giaddr.s_addr = inet_addr(addrs_gateway);
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263 vp = &bp->bp_vend[0];
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264 bcopy(&cookie, vp, sizeof(cookie));
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265 vp += sizeof(cookie);
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266 addr = inet_addr(addrs_netmask);
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267 vp = add_tag(vp, TAG_SUBNET_MASK, &addr, sizeof(in_addr_t));
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268 addr = inet_addr(addrs_broadcast);
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269 vp = add_tag(vp, TAG_IP_BROADCAST, &addr, sizeof(in_addr_t));
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270 addr = inet_addr(addrs_gateway);
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271 vp = add_tag(vp, TAG_GATEWAY, &addr, sizeof(in_addr_t));
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272 *vp = TAG_END;
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273 }
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274
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275
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276 //
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277 // Initialize network interface[s] using BOOTP/DHCP
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278 //
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279 void
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280 init_all_network_interfaces(void)
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281 {
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282 static volatile int in_init_all_network_interfaces = 0;
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283 #ifdef CYGPKG_IO_PCMCIA
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284 cyg_netdevtab_entry_t *t;
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285 #endif // CYGPKG_IO_PCMCIA
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diff changeset
286
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287 cyg_scheduler_lock();
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diff changeset
288 while ( in_init_all_network_interfaces ) {
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289 // Another thread is doing this...
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290 cyg_scheduler_unlock();
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291 cyg_thread_delay( 10 );
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292 cyg_scheduler_lock();
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293 }
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294 in_init_all_network_interfaces = 1;
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diff changeset
295 cyg_scheduler_unlock();
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diff changeset
296
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297 #ifdef CYGHWR_NET_DRIVER_ETH0
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298 if ( ! eth0_up ) { // Make this call idempotent
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299 #ifdef CYGPKG_IO_PCMCIA
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300 if ((t = eth_drv_netdev("eth0")) != (cyg_netdevtab_entry_t *)NULL) {
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301 int tries = 0;
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302 while (t->status != CYG_NETDEVTAB_STATUS_AVAIL) {
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303 if (tries == 0) {
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304 diag_printf("... Waiting for PCMCIA device 'eth0'\n");
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305 }
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306 if (++tries == 5) {
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307 diag_printf("... Giving up on PCMCIA device 'eth0'\n");
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308 goto bail_eth0;
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309 }
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310 cyg_thread_delay(100);
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311 }
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312 }
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313 #endif // CYGPKG_IO_PCMCIA
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314 #ifdef CYGHWR_NET_DRIVER_ETH0_BOOTP
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315 // Perform a complete initialization, using BOOTP/DHCP
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316 eth0_up = true;
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317 #ifdef CYGHWR_NET_DRIVER_ETH0_DHCP
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318 eth0_dhcpstate = 0; // Says that initialization is external to dhcp
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319 if (do_dhcp(eth0_name, &eth0_bootp_data, &eth0_dhcpstate, &eth0_lease))
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320 #else
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321 #ifdef CYGPKG_NET_DHCP
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322 eth0_dhcpstate = DHCPSTATE_BOOTP_FALLBACK;
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323 // so the dhcp machine does no harm if called
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324 #endif
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325 if (do_bootp(eth0_name, &eth0_bootp_data))
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326 #endif
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327 {
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328 #ifdef CYGHWR_NET_DRIVER_ETH0_BOOTP_SHOW
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329 show_bootp(eth0_name, &eth0_bootp_data);
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330 #endif
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331 } else {
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332 diag_printf("BOOTP/DHCP failed on eth0\n");
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333 eth0_up = false;
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334 }
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335 #elif defined(CYGHWR_NET_DRIVER_ETH0_ADDRS_IP)
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336 eth0_up = true;
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337 build_bootp_record(&eth0_bootp_data,
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338 eth0_name,
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339 string(CYGHWR_NET_DRIVER_ETH0_ADDRS_IP),
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340 string(CYGHWR_NET_DRIVER_ETH0_ADDRS_NETMASK),
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341 string(CYGHWR_NET_DRIVER_ETH0_ADDRS_BROADCAST),
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342 string(CYGHWR_NET_DRIVER_ETH0_ADDRS_GATEWAY),
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343 string(CYGHWR_NET_DRIVER_ETH0_ADDRS_SERVER));
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344 show_bootp(eth0_name, &eth0_bootp_data);
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345 #endif
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346 #ifdef CYGPKG_IO_PCMCIA
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347 bail_eth0:
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diff changeset
348 #endif
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349 }
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350 #endif // CYGHWR_NET_DRIVER_ETH0
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351 #ifdef CYGHWR_NET_DRIVER_ETH1
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352 if ( ! eth1_up ) { // Make this call idempotent
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353 #ifdef CYGPKG_IO_PCMCIA
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354 if ((t = eth_drv_netdev("eth1")) != (cyg_netdevtab_entry_t *)NULL) {
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355 int tries = 0;
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356 while (t->status != CYG_NETDEVTAB_STATUS_AVAIL) {
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357 if (tries == 0) {
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358 diag_printf("... Waiting for PCMCIA device 'eth1'\n");
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359 }
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diff changeset
360 if (++tries == 5) {
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361 diag_printf("... Giving up on PCMCIA device 'eth1'\n");
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362 goto bail_eth1;
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363 }
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364 cyg_thread_delay(100);
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365 }
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366 }
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367 #endif // CYGPKG_IO_PCMCIA
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368 #ifdef CYGHWR_NET_DRIVER_ETH1_BOOTP
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369 // Perform a complete initialization, using BOOTP/DHCP
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370 eth1_up = true;
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371 #ifdef CYGHWR_NET_DRIVER_ETH1_DHCP
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372 eth1_dhcpstate = 0; // Says that initialization is external to dhcp
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373 if (do_dhcp(eth1_name, &eth1_bootp_data, &eth1_dhcpstate, &eth1_lease))
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diff changeset
374 #else
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375 #ifdef CYGPKG_NET_DHCP
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376 eth1_dhcpstate = DHCPSTATE_BOOTP_FALLBACK;
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377 // so the dhcp machine does no harm if called
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diff changeset
378 #endif
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379 if (do_bootp(eth1_name, &eth1_bootp_data))
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diff changeset
380 #endif
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381 {
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382 #ifdef CYGHWR_NET_DRIVER_ETH1_BOOTP_SHOW
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383 show_bootp(eth1_name, &eth1_bootp_data);
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diff changeset
384 #endif
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385 } else {
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386 diag_printf("BOOTP/DHCP failed on eth1\n");
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387 eth1_up = false;
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diff changeset
388 }
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diff changeset
389 #elif defined(CYGHWR_NET_DRIVER_ETH1_ADDRS_IP)
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390 eth1_up = true;
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diff changeset
391 build_bootp_record(&eth1_bootp_data,
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diff changeset
392 eth1_name,
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diff changeset
393 string(CYGHWR_NET_DRIVER_ETH1_ADDRS_IP),
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diff changeset
394 string(CYGHWR_NET_DRIVER_ETH1_ADDRS_NETMASK),
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395 string(CYGHWR_NET_DRIVER_ETH1_ADDRS_BROADCAST),
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diff changeset
396 string(CYGHWR_NET_DRIVER_ETH1_ADDRS_GATEWAY),
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diff changeset
397 string(CYGHWR_NET_DRIVER_ETH1_ADDRS_SERVER));
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diff changeset
398 show_bootp(eth1_name, &eth1_bootp_data);
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diff changeset
399 #endif
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diff changeset
400 #ifdef CYGPKG_IO_PCMCIA
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diff changeset
401 bail_eth1:
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diff changeset
402 #endif
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diff changeset
403 }
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diff changeset
404 #endif // CYGHWR_NET_DRIVER_ETH1
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diff changeset
405 #ifdef CYGHWR_NET_DRIVER_ETH0
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diff changeset
406 #ifndef CYGHWR_NET_DRIVER_ETH0_MANUAL
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diff changeset
407 if (eth0_up) {
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diff changeset
408 if (!init_net(eth0_name, &eth0_bootp_data)) {
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diff changeset
409 diag_printf("Network initialization failed for eth0\n");
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diff changeset
410 eth0_up = false;
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diff changeset
411 }
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diff changeset
412 #ifdef CYGHWR_NET_DRIVER_ETH0_IPV6_PREFIX
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diff changeset
413 if (!init_net_IPv6(eth0_name, &eth0_bootp_data,
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diff changeset
414 string(CYGHWR_NET_DRIVER_ETH0_IPV6_PREFIX))) {
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415 diag_printf("Static IPv6 network initialization failed for eth0\n");
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416 eth0_up = false; // ???
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417 }
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418 #endif
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419 }
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420 #endif
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421 #endif
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422 #ifdef CYGHWR_NET_DRIVER_ETH1
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423 #ifndef CYGHWR_NET_DRIVER_ETH1_MANUAL
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424 if (eth1_up) {
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425 if (!init_net(eth1_name, &eth1_bootp_data)) {
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426 diag_printf("Network initialization failed for eth1\n");
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427 eth1_up = false;
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428 }
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429 #ifdef CYGHWR_NET_DRIVER_ETH1_IPV6_PREFIX
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430 if (!init_net_IPv6(eth1_name, &eth1_bootp_data,
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431 string(CYGHWR_NET_DRIVER_ETH1_IPV6_PREFIX))) {
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432 diag_printf("Static IPv6 network initialization failed for eth1\n");
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433 eth1_up = false; // ???
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434 }
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435 #endif
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436 }
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437 #endif
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438 #endif
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439
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440 #ifdef CYGPKG_NET_NLOOP
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441 #if 0 < CYGPKG_NET_NLOOP
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442 {
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443 static int loop_init = 0;
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444 int i;
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445 if ( 0 == loop_init++ )
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446 for ( i = 0; i < CYGPKG_NET_NLOOP; i++ )
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447 init_loopback_interface( i );
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448 }
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449 #endif
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450 #endif
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451
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452 #ifdef CYGOPT_NET_DHCP_DHCP_THREAD
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453 dhcp_start_dhcp_mgt_thread();
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454 #endif
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455
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456 #ifdef CYGOPT_NET_IPV6_ROUTING_THREAD
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457 ipv6_start_routing_thread();
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458 #endif
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459
499
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460 #ifdef CYGDAT_NS_DNS_DEFAULT_SERVER
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461 #define _SERVER string(CYGDAT_NS_DNS_DEFAULT_SERVER)
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462
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463 {
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464 struct in_addr server;
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465
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466 inet_aton(_SERVER, &server);
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467 cyg_dns_res_init(&server);
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468 }
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469 #endif
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470
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471 #ifdef CYGDAT_NS_DNS_DOMAINNAME_NAME
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472 #define _NAME string(CYGDAT_NS_DNS_DOMAINNAME_NAME)
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473 {
504
43dbc9753e8f * src/network_support.c (init_all_network_interfaces): Define buf
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474 const char buf[] = _NAME;
499
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475 int len = strlen(_NAME);
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476
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477 setdomainname(buf,len);
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478 }
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479 #endif
208
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480 // Open the monitor to other threads.
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481 in_init_all_network_interfaces = 0;
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482
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483 }
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484
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485 // EOF network_support.c