Mercurial > flash_v2

annotate packages/net/tcpip/current/src/lib/network_support.c @ 97:ced4577552cd ecos-sw-2000-06-06

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Merge from eCos master repository on 2000-06-06-08:44:00-BST
author jlarmour
date Tue, 06 Jun 2000 08:39:36 +0000
parents
children 95f3e12a6327
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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
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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 <bootp.h>
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74 #include <network.h>
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75 #include <arpa/inet.h>
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76
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77 #ifdef CYGHWR_NET_DRIVER_ETH0
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78 struct bootp eth0_bootp_data;
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79 cyg_bool_t eth0_up = false;
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80 const char *eth0_name = "eth0";
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81 #endif
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82 #ifdef CYGHWR_NET_DRIVER_ETH1
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83 struct bootp eth1_bootp_data;
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84 cyg_bool_t eth1_up = false;
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85 const char *eth1_name = "eth1";
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86 #endif
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87
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88 #define _string(s) #s
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89 #define string(s) _string(s)
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90
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91 #if defined(CYGHWR_NET_DRIVER_ETH0_ADDRS_IP) \
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92 || defined(CYGHWR_NET_DRIVER_ETH1_ADDRS_IP)
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93 //
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94 // Internal function which builds up a fake BOOTP database for
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95 // an interface.
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96 //
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97
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98 static unsigned char *
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99 add_tag(unsigned char *vp,
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100 unsigned char tag,
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101 void *val,
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102 int len)
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103 {
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104 int i;
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105 unsigned char *xp = (unsigned char *)val;
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106 *vp++ = tag;
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107 *vp++ = len;
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108 for (i = 0; i < len; i++) {
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109 *vp++ = *xp++;
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110 }
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111 return vp;
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112 }
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113
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114 static void
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115 build_bootp_record(struct bootp *bp,
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116 const char *addrs_ip,
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117 const char *addrs_netmask,
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118 const char *addrs_broadcast,
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119 const char *addrs_gateway,
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120 const char *addrs_server)
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121 {
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122 int i;
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123 in_addr_t addr;
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124 unsigned char *vp;
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125 unsigned char cookie[] = VM_RFC1048;
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126
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127 bzero(bp, sizeof(struct bootp));
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128 bp->bp_op = BOOTREPLY;
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129 bp->bp_htype = HTYPE_ETHERNET;
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130 bp->bp_hlen = 6;
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131 for (i = 0; i < bp->bp_hlen; i++) {
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132 bp->bp_chaddr[i] = 0xFF;
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133 }
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134 bp->bp_ciaddr.s_addr = inet_addr(addrs_ip);
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135 bp->bp_yiaddr.s_addr = inet_addr(addrs_ip);
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136 bp->bp_siaddr.s_addr = inet_addr(addrs_server);
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137 bp->bp_giaddr.s_addr = inet_addr(addrs_gateway);
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138 vp = &bp->bp_vend[0];
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139 bcopy(&cookie, vp, sizeof(cookie));
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140 vp += sizeof(cookie);
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141 addr = inet_addr(addrs_netmask);
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142 vp = add_tag(vp, TAG_SUBNET_MASK, &addr, sizeof(in_addr_t));
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143 addr = inet_addr(addrs_broadcast);
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144 vp = add_tag(vp, TAG_IP_BROADCAST, &addr, sizeof(in_addr_t));
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145 *vp = TAG_END;
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146 }
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147 #endif
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148
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149 //
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150 // Initialize network interface[s] using BOOTP/DHCP
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151 //
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152 void
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153 init_all_network_interfaces(void)
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154 {
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155 #ifdef CYGHWR_NET_DRIVER_ETH0
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156 if ( ! eth0_up ) { // Make this call idempotent
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157 #ifdef CYGHWR_NET_DRIVER_ETH0_BOOTP
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158 // Perform a complete initialization, using BOOTP/DHCP
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159 eth0_up = true;
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160 if (do_bootp(eth0_name, &eth0_bootp_data)) {
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161 #ifdef CYGHWR_NET_DRIVER_ETH0_BOOTP_SHOW
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162 show_bootp(eth0_name, &eth0_bootp_data);
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163 #endif
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164 } else {
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165 diag_printf("BOOTP failed on eth0\n");
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166 eth0_up = false;
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167 }
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168 #elif defined(CYGHWR_NET_DRIVER_ETH0_ADDRS_IP)
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169 eth0_up = true;
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170 build_bootp_record(&eth0_bootp_data,
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171 string(CYGHWR_NET_DRIVER_ETH0_ADDRS_IP),
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172 string(CYGHWR_NET_DRIVER_ETH0_ADDRS_NETMASK),
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173 string(CYGHWR_NET_DRIVER_ETH0_ADDRS_BROADCAST),
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174 string(CYGHWR_NET_DRIVER_ETH0_ADDRS_GATEWAY),
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175 string(CYGHWR_NET_DRIVER_ETH0_ADDRS_SERVER));
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176 show_bootp(eth0_name, &eth0_bootp_data);
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177 #endif
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178 }
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179 #endif // CYGHWR_NET_DRIVER_ETH0
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180 #ifdef CYGHWR_NET_DRIVER_ETH1
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181 if ( ! eth1_up ) { // Make this call idempotent
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182 #ifdef CYGHWR_NET_DRIVER_ETH1_BOOTP
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183 // Perform a complete initialization, using BOOTP/DHCP
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184 eth1_up = true;
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185 if (do_bootp(eth1_name, &eth1_bootp_data)) {
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186 #ifdef CYGHWR_NET_DRIVER_ETH1_BOOTP_SHOW
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187 show_bootp(eth1_name, &eth1_bootp_data);
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188 #endif
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189 } else {
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190 diag_printf("BOOTP failed on eth1\n");
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191 eth1_up = false;
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192 }
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193 #elif defined(CYGHWR_NET_DRIVER_ETH1_ADDRS_IP)
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194 eth1_up = true;
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195 build_bootp_record(&eth1_bootp_data,
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196 string(CYGHWR_NET_DRIVER_ETH1_ADDRS_IP),
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197 string(CYGHWR_NET_DRIVER_ETH1_ADDRS_NETMASK),
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198 string(CYGHWR_NET_DRIVER_ETH1_ADDRS_BROADCAST),
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199 string(CYGHWR_NET_DRIVER_ETH1_ADDRS_GATEWAY),
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200 string(CYGHWR_NET_DRIVER_ETH1_ADDRS_SERVER));
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201 show_bootp(eth1_name, &eth1_bootp_data);
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202 #endif
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203 }
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204 #endif // CYGHWR_NET_DRIVER_ETH1
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205 #ifdef CYGHWR_NET_DRIVER_ETH0
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206 #ifndef CYGHWR_NET_DRIVER_ETH0_MANUAL
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207 if (eth0_up) {
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208 if (!init_net(eth0_name, &eth0_bootp_data)) {
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209 diag_printf("Network initialization failed for eth0\n");
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210 eth0_up = false;
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211 }
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212 }
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213 #endif
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214 #endif
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215 #ifdef CYGHWR_NET_DRIVER_ETH1
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216 #ifndef CYGHWR_NET_DRIVER_ETH1_MANUAL
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217 if (eth1_up) {
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218 if (!init_net(eth1_name, &eth1_bootp_data)) {
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219 diag_printf("Network initialization failed for eth1\n");
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220 eth1_up = false;
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221 }
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222 }
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223 #endif
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224 #endif
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225 }