Mercurial > flash_v2

annotate packages/net/tcpip/current/src/lib/network_support.c @ 156:b939e9cada46

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Merge from eCos master repository on 2001-03-29-21:44:39-BST
author jlarmour
date Fri, 06 Apr 2001 17:20:13 +0000
parents 6ed91473a1cd
children
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1 //==========================================================================
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2 //
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3 // lib/net_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 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //####BSDCOPYRIGHTBEGIN####
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32 //
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33 // -------------------------------------------
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34 //
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35 // Portions of this software may have been derived from OpenBSD or other sources,
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36 // and are covered by the appropriate copyright disclaimers included herein.
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37 //
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38 // -------------------------------------------
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39 //
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40 //####BSDCOPYRIGHTEND####
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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
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46 // Date: 2000-01-10
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47 // Purpose:
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48 // Description:
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49 //
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50 //
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51 //####DESCRIPTIONEND####
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52 //
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53 //==========================================================================
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54
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55 // BOOTP support
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56
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57 #include <pkgconf/net.h>
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58 #undef _KERNEL
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59 #include <sys/param.h>
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60 #include <sys/socket.h>
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61 #include <sys/ioctl.h>
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62 #include <sys/errno.h>
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63
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64 #include <net/if.h>
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65 #include <netinet/in.h>
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66 #include <netinet/ip.h>
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67 #include <netinet/ip_icmp.h>
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68 #include <net/route.h>
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69
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70 #include <cyg/infra/diag.h>
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71 #include <cyg/kernel/kapi.h>
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72
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73 #include <stdio.h> // for 'sprintf()'
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74
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75 #include <bootp.h>
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76 #include <network.h>
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77 #include <arpa/inet.h>
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110
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79 #include <eth_drv.h>
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80
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81 #ifdef CYGPKG_NET_DHCP
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82 #include <dhcp.h>
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83 #endif
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84
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85 #ifdef CYGHWR_NET_DRIVER_ETH0
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86 struct bootp eth0_bootp_data;
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87 cyg_bool_t eth0_up = false;
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88 const char *eth0_name = "eth0";
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89 #endif
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90 #ifdef CYGHWR_NET_DRIVER_ETH1
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91 struct bootp eth1_bootp_data;
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92 cyg_bool_t eth1_up = false;
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93 const char *eth1_name = "eth1";
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94 #endif
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95
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96 #define _string(s) #s
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97 #define string(s) _string(s)
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98
115
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99 #ifndef CYGPKG_LIBC_STDIO
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100 #define perror(s) diag_printf(#s ": %s\n", strerror(errno))
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101 #endif
103
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102
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103 #ifdef CYGPKG_NET_NLOOP
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104 #if 0 < CYGPKG_NET_NLOOP
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105 //
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106 // Initialize loopback interface ---------- Added by sorin@netappi.com
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107 //
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108 cyg_bool_t init_loopback_interface(int lo)
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109 {
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110 struct sockaddr_in *addrp;
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111 struct ifreq ifr;
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112 int s;
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113 int one = 1;
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114 struct ecos_rtentry route;
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115 struct in_addr netmask, gateway;
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116
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117 //diag_printf("Init_loopback_interface\n");
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118 s = socket(AF_INET, SOCK_DGRAM, 0);
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119 if (s < 0) {
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120 perror("socket");
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121 return false;
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122 }
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123 if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, &one, sizeof(one))) {
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124 perror("setsockopt");
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125 return false;
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126 }
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127
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128 addrp = (struct sockaddr_in *) &ifr.ifr_addr;
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129 memset(addrp, 0, sizeof(*addrp));
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130 addrp->sin_family = AF_INET;
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131 addrp->sin_len = sizeof(*addrp);
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132 addrp->sin_port = 0;
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133 // Make an address 127.0.<lo>.1 to manage multiple loopback ifs.
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134 // (There is normally only 1, so it's the standard 127.0.0.1)
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135 addrp->sin_addr.s_addr = htonl((0x100 * lo) + INADDR_LOOPBACK) ;
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136
115
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137 #if CYGPKG_NET_NLOOP > 1
103
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138 // Init the one we were told to
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139 sprintf(ifr.ifr_name, "lo%d", lo);
115
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140 #else
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141 strcpy(ifr.ifr_name, "lo0");
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142 #endif
103
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143
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144 if (ioctl(s, SIOCSIFADDR, &ifr)) {
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145 perror("SIOCIFADDR");
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146 return false;
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147 }
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148
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149 #if 1 < CYGPKG_NET_NLOOP
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150 // We cheat to make different nets for multiple loopback devs
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151 addrp->sin_addr.s_addr = netmask.s_addr = htonl(IN_CLASSC_NET);
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152 #else
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153 //
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154 addrp->sin_addr.s_addr = netmask.s_addr = htonl(IN_CLASSA_NET);
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155 #endif
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156 if (ioctl(s, SIOCSIFNETMASK, &ifr)) {
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157 perror("SIOCSIFNETMASK");
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158 return false;
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159 }
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160 ifr.ifr_flags = IFF_UP | IFF_BROADCAST | IFF_RUNNING;
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161 if (ioctl(s, SIOCSIFFLAGS, &ifr)) {
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162 perror("SIOCSIFFLAGS");
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163 return false;
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164 }
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165
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166 gateway.s_addr = htonl(INADDR_LOOPBACK);
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167 memset(&route, 0, sizeof(route));
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168 addrp->sin_family = AF_INET;
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169 addrp->sin_port = 0;
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170 addrp->sin_addr.s_addr = htonl((0x100 * lo) + INADDR_LOOPBACK) & netmask.s_addr;
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171 memcpy(&route.rt_dst, addrp, sizeof(*addrp));
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172 addrp->sin_addr = netmask;
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173 memcpy(&route.rt_genmask, addrp, sizeof(*addrp));
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174 addrp->sin_addr = gateway;
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175 memcpy(&route.rt_gateway, addrp, sizeof(*addrp));
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176
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177 route.rt_dev = ifr.ifr_name;
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178 route.rt_flags = RTF_UP|RTF_GATEWAY;
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179 route.rt_metric = 0;
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180
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181 if (ioctl(s, SIOCADDRT, &route)) {
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182 diag_printf("Route - dst: %s", inet_ntoa(((struct sockaddr_in *)&route.rt_dst)->sin_addr));
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183 diag_printf(", mask: %s", inet_ntoa(((struct sockaddr_in *)&route.rt_genmask)->sin_addr));
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184 diag_printf(", gateway: %s\n", inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr));
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185 if (errno != EEXIST) {
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186 perror("SIOCADDRT 3");
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187 return false;
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188 }
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189 }
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190 close(s);
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191 return true;
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192 }
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193 #endif
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194 #endif
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195
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196
97
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197 //
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198 // Internal function which builds up a fake BOOTP database for
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199 // an interface.
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200 //
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201
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202 static unsigned char *
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203 add_tag(unsigned char *vp,
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204 unsigned char tag,
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205 void *val,
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206 int len)
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207 {
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208 int i;
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209 unsigned char *xp = (unsigned char *)val;
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210 *vp++ = tag;
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211 *vp++ = len;
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212 for (i = 0; i < len; i++) {
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213 *vp++ = *xp++;
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214 }
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215 return vp;
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216 }
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217
110
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218 void
97
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219 build_bootp_record(struct bootp *bp,
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220 const char *addrs_ip,
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221 const char *addrs_netmask,
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222 const char *addrs_broadcast,
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223 const char *addrs_gateway,
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224 const char *addrs_server)
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225 {
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226 int i;
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227 in_addr_t addr;
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228 unsigned char *vp;
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229 unsigned char cookie[] = VM_RFC1048;
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230
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231 bzero(bp, sizeof(struct bootp));
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232 bp->bp_op = BOOTREPLY;
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233 bp->bp_htype = HTYPE_ETHERNET;
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234 bp->bp_hlen = 6;
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235 for (i = 0; i < bp->bp_hlen; i++) {
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236 bp->bp_chaddr[i] = 0xFF;
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237 }
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238 bp->bp_ciaddr.s_addr = inet_addr(addrs_ip);
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239 bp->bp_yiaddr.s_addr = inet_addr(addrs_ip);
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240 bp->bp_siaddr.s_addr = inet_addr(addrs_server);
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241 bp->bp_giaddr.s_addr = inet_addr(addrs_gateway);
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242 vp = &bp->bp_vend[0];
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243 bcopy(&cookie, vp, sizeof(cookie));
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244 vp += sizeof(cookie);
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245 addr = inet_addr(addrs_netmask);
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246 vp = add_tag(vp, TAG_SUBNET_MASK, &addr, sizeof(in_addr_t));
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247 addr = inet_addr(addrs_broadcast);
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248 vp = add_tag(vp, TAG_IP_BROADCAST, &addr, sizeof(in_addr_t));
110
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249 addr = inet_addr(addrs_gateway);
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250 vp = add_tag(vp, TAG_GATEWAY, &addr, sizeof(in_addr_t));
97
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251 *vp = TAG_END;
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252 }
110
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253
97
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254
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255 //
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256 // Initialize network interface[s] using BOOTP/DHCP
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257 //
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258 void
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259 init_all_network_interfaces(void)
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260 {
103
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261 static volatile int in_init_all_network_interfaces = 0;
115
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262 #ifdef CYGPKG_IO_PCMCIA
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263 cyg_netdevtab_entry_t *t;
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264 #endif // CYGPKG_IO_PCMCIA
103
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265
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266 cyg_scheduler_lock();
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267 while ( in_init_all_network_interfaces ) {
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268 // Another thread is doing this...
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269 cyg_scheduler_unlock();
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270 cyg_thread_delay( 10 );
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271 cyg_scheduler_lock();
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272 }
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273 in_init_all_network_interfaces = 1;
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274 cyg_scheduler_unlock();
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275
97
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276 #ifdef CYGHWR_NET_DRIVER_ETH0
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277 if ( ! eth0_up ) { // Make this call idempotent
115
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278 #ifdef CYGPKG_IO_PCMCIA
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279 if ((t = eth_drv_netdev("eth0")) != (cyg_netdevtab_entry_t *)NULL) {
156
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280 int tries = 0;
115
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281 while (t->status != CYG_NETDEVTAB_STATUS_AVAIL) {
156
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282 if (tries == 0) {
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283 diag_printf("... Waiting for PCMCIA device 'eth0'\n");
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284 }
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285 if (++tries == 5) {
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286 diag_printf("... Giving up on PCMCIA device 'eth0'\n");
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287 goto bail_eth0;
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288 }
115
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289 cyg_thread_delay(100);
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290 }
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291 }
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292 #endif // CYGPKG_IO_PCMCIA
97
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293 #ifdef CYGHWR_NET_DRIVER_ETH0_BOOTP
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294 // Perform a complete initialization, using BOOTP/DHCP
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295 eth0_up = true;
110
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296 #ifdef CYGHWR_NET_DRIVER_ETH0_DHCP
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297 eth0_dhcpstate = 0; // Says that initialization is external to dhcp
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298 if (do_dhcp(eth0_name, &eth0_bootp_data, &eth0_dhcpstate, &eth0_lease))
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299 #else
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300 #ifdef CYGPKG_NET_DHCP
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301 eth0_dhcpstate = DHCPSTATE_BOOTP_FALLBACK;
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302 // so the dhcp machine does no harm if called
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303 #endif
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304 if (do_bootp(eth0_name, &eth0_bootp_data))
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305 #endif
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306 {
97
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307 #ifdef CYGHWR_NET_DRIVER_ETH0_BOOTP_SHOW
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308 show_bootp(eth0_name, &eth0_bootp_data);
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309 #endif
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310 } else {
110
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311 diag_printf("BOOTP/DHCP failed on eth0\n");
97
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312 eth0_up = false;
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313 }
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314 #elif defined(CYGHWR_NET_DRIVER_ETH0_ADDRS_IP)
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315 eth0_up = true;
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316 build_bootp_record(&eth0_bootp_data,
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317 string(CYGHWR_NET_DRIVER_ETH0_ADDRS_IP),
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318 string(CYGHWR_NET_DRIVER_ETH0_ADDRS_NETMASK),
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319 string(CYGHWR_NET_DRIVER_ETH0_ADDRS_BROADCAST),
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320 string(CYGHWR_NET_DRIVER_ETH0_ADDRS_GATEWAY),
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321 string(CYGHWR_NET_DRIVER_ETH0_ADDRS_SERVER));
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322 show_bootp(eth0_name, &eth0_bootp_data);
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323 #endif
156
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324 bail_eth0:
97
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325 }
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326 #endif // CYGHWR_NET_DRIVER_ETH0
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327 #ifdef CYGHWR_NET_DRIVER_ETH1
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328 if ( ! eth1_up ) { // Make this call idempotent
115
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329 #ifdef CYGPKG_IO_PCMCIA
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330 if ((t = eth_drv_netdev("eth1")) != (cyg_netdevtab_entry_t *)NULL) {
156
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331 int tries = 0;
115
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332 while (t->status != CYG_NETDEVTAB_STATUS_AVAIL) {
156
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333 if (tries == 0) {
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334 diag_printf("... Waiting for PCMCIA device 'eth1'\n");
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335 }
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336 if (++tries == 5) {
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337 diag_printf("... Giving up on PCMCIA device 'eth1'\n");
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338 goto bail_eth1;
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339 }
115
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340 cyg_thread_delay(100);
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341 }
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342 }
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343 #endif // CYGPKG_IO_PCMCIA
97
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344 #ifdef CYGHWR_NET_DRIVER_ETH1_BOOTP
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345 // Perform a complete initialization, using BOOTP/DHCP
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346 eth1_up = true;
110
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347 #ifdef CYGHWR_NET_DRIVER_ETH1_DHCP
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348 eth1_dhcpstate = 0; // Says that initialization is external to dhcp
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349 if (do_dhcp(eth1_name, &eth1_bootp_data, &eth1_dhcpstate, &eth1_lease))
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350 #else
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351 #ifdef CYGPKG_NET_DHCP
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352 eth1_dhcpstate = DHCPSTATE_BOOTP_FALLBACK;
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353 // so the dhcp machine does no harm if called
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354 #endif
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355 if (do_bootp(eth1_name, &eth1_bootp_data))
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diff changeset
356 #endif
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357 {
97
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358 #ifdef CYGHWR_NET_DRIVER_ETH1_BOOTP_SHOW
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359 show_bootp(eth1_name, &eth1_bootp_data);
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360 #endif
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361 } else {
110
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362 diag_printf("BOOTP/DHCP failed on eth1\n");
97
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363 eth1_up = false;
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364 }
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365 #elif defined(CYGHWR_NET_DRIVER_ETH1_ADDRS_IP)
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366 eth1_up = true;
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367 build_bootp_record(&eth1_bootp_data,
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368 string(CYGHWR_NET_DRIVER_ETH1_ADDRS_IP),
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369 string(CYGHWR_NET_DRIVER_ETH1_ADDRS_NETMASK),
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370 string(CYGHWR_NET_DRIVER_ETH1_ADDRS_BROADCAST),
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371 string(CYGHWR_NET_DRIVER_ETH1_ADDRS_GATEWAY),
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372 string(CYGHWR_NET_DRIVER_ETH1_ADDRS_SERVER));
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373 show_bootp(eth1_name, &eth1_bootp_data);
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374 #endif
156
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diff changeset
375 bail_eth1:
97
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376 }
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377 #endif // CYGHWR_NET_DRIVER_ETH1
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378 #ifdef CYGHWR_NET_DRIVER_ETH0
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379 #ifndef CYGHWR_NET_DRIVER_ETH0_MANUAL
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380 if (eth0_up) {
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381 if (!init_net(eth0_name, &eth0_bootp_data)) {
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382 diag_printf("Network initialization failed for eth0\n");
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383 eth0_up = false;
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384 }
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385 }
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386 #endif
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387 #endif
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388 #ifdef CYGHWR_NET_DRIVER_ETH1
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389 #ifndef CYGHWR_NET_DRIVER_ETH1_MANUAL
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390 if (eth1_up) {
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391 if (!init_net(eth1_name, &eth1_bootp_data)) {
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392 diag_printf("Network initialization failed for eth1\n");
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393 eth1_up = false;
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394 }
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395 }
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396 #endif
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397 #endif
103
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diff changeset
398
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diff changeset
399 #ifdef CYGPKG_NET_NLOOP
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diff changeset
400 #if 0 < CYGPKG_NET_NLOOP
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diff changeset
401 {
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diff changeset
402 static int loop_init = 0;
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diff changeset
403 int i;
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404 if ( 0 == loop_init++ )
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diff changeset
405 for ( i = 0; i < CYGPKG_NET_NLOOP; i++ )
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diff changeset
406 init_loopback_interface( i );
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diff changeset
407 }
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diff changeset
408 #endif
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diff changeset
409 #endif
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diff changeset
410
110
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diff changeset
411 #ifdef CYGOPT_NET_DHCP_DHCP_THREAD
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diff changeset
412 dhcp_start_dhcp_mgt_thread();
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diff changeset
413 #endif
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diff changeset
414
103
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diff changeset
415 // Open the monitor to other threads.
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diff changeset
416 in_init_all_network_interfaces = 0;
110
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diff changeset
417
97
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418 }
110
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diff changeset
419
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diff changeset
420 // EOF network_support.c