BadVPN – Blame information for rev 1
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Rev | Author | Line No. | Line |
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1 | office | 1 | /** |
2 | * @file |
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3 | * lwIP network interface abstraction |
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4 | * |
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5 | * @defgroup netif Network interface (NETIF) |
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6 | * @ingroup callbackstyle_api |
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7 | * |
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8 | * @defgroup netif_ip4 IPv4 address handling |
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9 | * @ingroup netif |
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10 | * |
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11 | * @defgroup netif_ip6 IPv6 address handling |
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12 | * @ingroup netif |
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13 | * |
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14 | * @defgroup netif_cd Client data handling |
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15 | * Store data (void*) on a netif for application usage. |
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16 | * @see @ref LWIP_NUM_NETIF_CLIENT_DATA |
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17 | * @ingroup netif |
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18 | */ |
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19 | |||
20 | /* |
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21 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science. |
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22 | * All rights reserved. |
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23 | * |
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24 | * Redistribution and use in source and binary forms, with or without modification, |
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25 | * are permitted provided that the following conditions are met: |
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26 | * |
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27 | * 1. Redistributions of source code must retain the above copyright notice, |
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28 | * this list of conditions and the following disclaimer. |
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29 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
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30 | * this list of conditions and the following disclaimer in the documentation |
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31 | * and/or other materials provided with the distribution. |
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32 | * 3. The name of the author may not be used to endorse or promote products |
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33 | * derived from this software without specific prior written permission. |
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34 | * |
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35 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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36 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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37 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
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38 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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39 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
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40 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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41 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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42 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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43 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
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44 | * OF SUCH DAMAGE. |
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45 | * |
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46 | * This file is part of the lwIP TCP/IP stack. |
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47 | * |
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48 | * Author: Adam Dunkels <adam@sics.se> |
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49 | */ |
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50 | |||
51 | #include "lwip/opt.h" |
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52 | |||
53 | #include <string.h> /* memset */ |
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54 | #include <stdlib.h> /* atoi */ |
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55 | |||
56 | #include "lwip/def.h" |
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57 | #include "lwip/ip_addr.h" |
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58 | #include "lwip/ip6_addr.h" |
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59 | #include "lwip/netif.h" |
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60 | #include "lwip/priv/tcp_priv.h" |
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61 | #include "lwip/udp.h" |
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62 | #include "lwip/raw.h" |
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63 | #include "lwip/snmp.h" |
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64 | #include "lwip/igmp.h" |
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65 | #include "lwip/etharp.h" |
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66 | #include "lwip/stats.h" |
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67 | #include "lwip/sys.h" |
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68 | #include "lwip/ip.h" |
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69 | #if ENABLE_LOOPBACK |
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70 | #if LWIP_NETIF_LOOPBACK_MULTITHREADING |
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71 | #include "lwip/tcpip.h" |
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72 | #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */ |
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73 | #endif /* ENABLE_LOOPBACK */ |
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74 | |||
75 | #include "netif/ethernet.h" |
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76 | |||
77 | #if LWIP_AUTOIP |
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78 | #include "lwip/autoip.h" |
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79 | #endif /* LWIP_AUTOIP */ |
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80 | #if LWIP_DHCP |
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81 | #include "lwip/dhcp.h" |
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82 | #endif /* LWIP_DHCP */ |
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83 | #if LWIP_IPV6_DHCP6 |
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84 | #include "lwip/dhcp6.h" |
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85 | #endif /* LWIP_IPV6_DHCP6 */ |
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86 | #if LWIP_IPV6_MLD |
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87 | #include "lwip/mld6.h" |
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88 | #endif /* LWIP_IPV6_MLD */ |
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89 | #if LWIP_IPV6 |
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90 | #include "lwip/nd6.h" |
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91 | #endif |
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92 | |||
93 | #if LWIP_NETIF_STATUS_CALLBACK |
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94 | #define NETIF_STATUS_CALLBACK(n) do{ if (n->status_callback) { (n->status_callback)(n); }}while(0) |
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95 | #else |
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96 | #define NETIF_STATUS_CALLBACK(n) |
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97 | #endif /* LWIP_NETIF_STATUS_CALLBACK */ |
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98 | |||
99 | #if LWIP_NETIF_LINK_CALLBACK |
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100 | #define NETIF_LINK_CALLBACK(n) do{ if (n->link_callback) { (n->link_callback)(n); }}while(0) |
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101 | #else |
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102 | #define NETIF_LINK_CALLBACK(n) |
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103 | #endif /* LWIP_NETIF_LINK_CALLBACK */ |
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104 | |||
105 | #if LWIP_NETIF_EXT_STATUS_CALLBACK |
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106 | static netif_ext_callback_t *ext_callback; |
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107 | #endif |
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108 | |||
109 | #if !LWIP_SINGLE_NETIF |
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110 | struct netif *netif_list; |
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111 | #endif /* !LWIP_SINGLE_NETIF */ |
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112 | struct netif *netif_default; |
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113 | |||
114 | #define netif_index_to_num(index) ((index) - 1) |
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115 | static u8_t netif_num; |
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116 | |||
117 | #if LWIP_NUM_NETIF_CLIENT_DATA > 0 |
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118 | static u8_t netif_client_id; |
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119 | #endif |
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120 | |||
121 | #define NETIF_REPORT_TYPE_IPV4 0x01 |
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122 | #define NETIF_REPORT_TYPE_IPV6 0x02 |
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123 | static void netif_issue_reports(struct netif *netif, u8_t report_type); |
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124 | |||
125 | #if LWIP_IPV6 |
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126 | static err_t netif_null_output_ip6(struct netif *netif, struct pbuf *p, const ip6_addr_t *ipaddr); |
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127 | #endif /* LWIP_IPV6 */ |
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128 | |||
129 | #if LWIP_HAVE_LOOPIF |
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130 | #if LWIP_IPV4 |
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131 | static err_t netif_loop_output_ipv4(struct netif *netif, struct pbuf *p, const ip4_addr_t *addr); |
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132 | #endif |
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133 | #if LWIP_IPV6 |
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134 | static err_t netif_loop_output_ipv6(struct netif *netif, struct pbuf *p, const ip6_addr_t *addr); |
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135 | #endif |
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136 | |||
137 | |||
138 | static struct netif loop_netif; |
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139 | |||
140 | /** |
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141 | * Initialize a lwip network interface structure for a loopback interface |
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142 | * |
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143 | * @param netif the lwip network interface structure for this loopif |
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144 | * @return ERR_OK if the loopif is initialized |
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145 | * ERR_MEM if private data couldn't be allocated |
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146 | */ |
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147 | static err_t |
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148 | netif_loopif_init(struct netif *netif) |
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149 | { |
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150 | /* initialize the snmp variables and counters inside the struct netif |
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151 | * ifSpeed: no assumption can be made! |
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152 | */ |
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153 | MIB2_INIT_NETIF(netif, snmp_ifType_softwareLoopback, 0); |
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154 | |||
155 | netif->name[0] = 'l'; |
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156 | netif->name[1] = 'o'; |
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157 | #if LWIP_IPV4 |
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158 | netif->output = netif_loop_output_ipv4; |
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159 | #endif |
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160 | #if LWIP_IPV6 |
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161 | netif->output_ip6 = netif_loop_output_ipv6; |
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162 | #endif |
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163 | #if LWIP_LOOPIF_MULTICAST |
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164 | netif_set_flags(netif, NETIF_FLAG_IGMP); |
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165 | #endif |
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166 | return ERR_OK; |
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167 | } |
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168 | #endif /* LWIP_HAVE_LOOPIF */ |
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169 | |||
170 | void |
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171 | netif_init(void) |
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172 | { |
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173 | #if LWIP_HAVE_LOOPIF |
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174 | #if LWIP_IPV4 |
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175 | #define LOOPIF_ADDRINIT &loop_ipaddr, &loop_netmask, &loop_gw, |
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176 | ip4_addr_t loop_ipaddr, loop_netmask, loop_gw; |
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177 | IP4_ADDR(&loop_gw, 127, 0, 0, 1); |
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178 | IP4_ADDR(&loop_ipaddr, 127, 0, 0, 1); |
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179 | IP4_ADDR(&loop_netmask, 255, 0, 0, 0); |
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180 | #else /* LWIP_IPV4 */ |
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181 | #define LOOPIF_ADDRINIT |
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182 | #endif /* LWIP_IPV4 */ |
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183 | |||
184 | #if NO_SYS |
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185 | netif_add(&loop_netif, LOOPIF_ADDRINIT NULL, netif_loopif_init, ip_input); |
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186 | #else /* NO_SYS */ |
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187 | netif_add(&loop_netif, LOOPIF_ADDRINIT NULL, netif_loopif_init, tcpip_input); |
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188 | #endif /* NO_SYS */ |
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189 | |||
190 | #if LWIP_IPV6 |
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191 | IP_ADDR6_HOST(loop_netif.ip6_addr, 0, 0, 0, 0x00000001UL); |
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192 | loop_netif.ip6_addr_state[0] = IP6_ADDR_VALID; |
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193 | #endif /* LWIP_IPV6 */ |
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194 | |||
195 | netif_set_link_up(&loop_netif); |
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196 | netif_set_up(&loop_netif); |
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197 | |||
198 | #endif /* LWIP_HAVE_LOOPIF */ |
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199 | } |
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200 | |||
201 | /** |
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202 | * @ingroup lwip_nosys |
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203 | * Forwards a received packet for input processing with |
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204 | * ethernet_input() or ip_input() depending on netif flags. |
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205 | * Don't call directly, pass to netif_add() and call |
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206 | * netif->input(). |
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207 | * Only works if the netif driver correctly sets |
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208 | * NETIF_FLAG_ETHARP and/or NETIF_FLAG_ETHERNET flag! |
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209 | */ |
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210 | err_t |
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211 | netif_input(struct pbuf *p, struct netif *inp) |
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212 | { |
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213 | #if LWIP_ETHERNET |
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214 | if (inp->flags & (NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET)) { |
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215 | return ethernet_input(p, inp); |
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216 | } else |
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217 | #endif /* LWIP_ETHERNET */ |
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218 | return ip_input(p, inp); |
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219 | } |
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220 | |||
221 | /** |
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222 | * @ingroup netif |
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223 | * Add a network interface to the list of lwIP netifs. |
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224 | * |
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225 | * Same as @ref netif_add but without IPv4 addresses |
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226 | */ |
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227 | struct netif * |
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228 | netif_add_noaddr(struct netif *netif, void *state, netif_init_fn init, netif_input_fn input) |
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229 | { |
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230 | return netif_add(netif, |
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231 | #if LWIP_IPV4 |
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232 | NULL, NULL, NULL, |
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233 | #endif /* LWIP_IPV4*/ |
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234 | state, init, input); |
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235 | } |
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236 | |||
237 | /** |
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238 | * @ingroup netif |
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239 | * Add a network interface to the list of lwIP netifs. |
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240 | * |
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241 | * @param netif a pre-allocated netif structure |
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242 | * @param ipaddr IP address for the new netif |
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243 | * @param netmask network mask for the new netif |
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244 | * @param gw default gateway IP address for the new netif |
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245 | * @param state opaque data passed to the new netif |
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246 | * @param init callback function that initializes the interface |
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247 | * @param input callback function that is called to pass |
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248 | * ingress packets up in the protocol layer stack.\n |
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249 | * It is recommended to use a function that passes the input directly |
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250 | * to the stack (netif_input(), NO_SYS=1 mode) or via sending a |
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251 | * message to TCPIP thread (tcpip_input(), NO_SYS=0 mode).\n |
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252 | * These functions use netif flags NETIF_FLAG_ETHARP and NETIF_FLAG_ETHERNET |
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253 | * to decide whether to forward to ethernet_input() or ip_input(). |
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254 | * In other words, the functions only work when the netif |
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255 | * driver is implemented correctly!\n |
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256 | * Most members of struct netif should be be initialized by the |
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257 | * netif init function = netif driver (init parameter of this function).\n |
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258 | * IPv6: Don't forget to call netif_create_ip6_linklocal_address() after |
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259 | * setting the MAC address in struct netif.hwaddr |
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260 | * (IPv6 requires a link-local address). |
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261 | * |
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262 | * @return netif, or NULL if failed. |
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263 | */ |
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264 | struct netif * |
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265 | netif_add(struct netif *netif, |
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266 | #if LWIP_IPV4 |
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267 | const ip4_addr_t *ipaddr, const ip4_addr_t *netmask, const ip4_addr_t *gw, |
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268 | #endif /* LWIP_IPV4 */ |
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269 | void *state, netif_init_fn init, netif_input_fn input) |
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270 | { |
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271 | #if LWIP_IPV6 |
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272 | s8_t i; |
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273 | #endif |
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274 | |||
275 | #if LWIP_SINGLE_NETIF |
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276 | if (netif_default != NULL) { |
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277 | LWIP_ASSERT("single netif already set", 0); |
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278 | return NULL; |
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279 | } |
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280 | #endif |
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281 | |||
282 | LWIP_ASSERT("No init function given", init != NULL); |
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283 | |||
284 | #if LWIP_IPV4 |
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285 | if (ipaddr == NULL) { |
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286 | ipaddr = ip_2_ip4(IP4_ADDR_ANY); |
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287 | } |
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288 | if (netmask == NULL) { |
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289 | netmask = ip_2_ip4(IP4_ADDR_ANY); |
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290 | } |
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291 | if (gw == NULL) { |
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292 | gw = ip_2_ip4(IP4_ADDR_ANY); |
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293 | } |
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294 | |||
295 | /* reset new interface configuration state */ |
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296 | ip_addr_set_zero_ip4(&netif->ip_addr); |
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297 | ip_addr_set_zero_ip4(&netif->netmask); |
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298 | ip_addr_set_zero_ip4(&netif->gw); |
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299 | #endif /* LWIP_IPV4 */ |
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300 | #if LWIP_IPV6 |
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301 | for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { |
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302 | ip_addr_set_zero_ip6(&netif->ip6_addr[i]); |
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303 | netif->ip6_addr_state[i] = IP6_ADDR_INVALID; |
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304 | #if LWIP_IPV6_ADDRESS_LIFETIMES |
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305 | netif->ip6_addr_valid_life[i] = IP6_ADDR_LIFE_STATIC; |
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306 | netif->ip6_addr_pref_life[i] = IP6_ADDR_LIFE_STATIC; |
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307 | #endif /* LWIP_IPV6_ADDRESS_LIFETIMES */ |
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308 | } |
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309 | netif->output_ip6 = netif_null_output_ip6; |
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310 | #endif /* LWIP_IPV6 */ |
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311 | NETIF_SET_CHECKSUM_CTRL(netif, NETIF_CHECKSUM_ENABLE_ALL); |
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312 | netif->flags = 0; |
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313 | #ifdef netif_get_client_data |
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314 | memset(netif->client_data, 0, sizeof(netif->client_data)); |
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315 | #endif /* LWIP_NUM_NETIF_CLIENT_DATA */ |
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316 | #if LWIP_IPV6_AUTOCONFIG |
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317 | /* IPv6 address autoconfiguration not enabled by default */ |
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318 | netif->ip6_autoconfig_enabled = 0; |
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319 | #endif /* LWIP_IPV6_AUTOCONFIG */ |
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320 | #if LWIP_IPV6_SEND_ROUTER_SOLICIT |
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321 | netif->rs_count = LWIP_ND6_MAX_MULTICAST_SOLICIT; |
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322 | #endif /* LWIP_IPV6_SEND_ROUTER_SOLICIT */ |
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323 | #if LWIP_NETIF_STATUS_CALLBACK |
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324 | netif->status_callback = NULL; |
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325 | #endif /* LWIP_NETIF_STATUS_CALLBACK */ |
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326 | #if LWIP_NETIF_LINK_CALLBACK |
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327 | netif->link_callback = NULL; |
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328 | #endif /* LWIP_NETIF_LINK_CALLBACK */ |
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329 | #if LWIP_IGMP |
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330 | netif->igmp_mac_filter = NULL; |
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331 | #endif /* LWIP_IGMP */ |
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332 | #if LWIP_IPV6 && LWIP_IPV6_MLD |
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333 | netif->mld_mac_filter = NULL; |
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334 | #endif /* LWIP_IPV6 && LWIP_IPV6_MLD */ |
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335 | #if ENABLE_LOOPBACK |
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336 | netif->loop_first = NULL; |
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337 | netif->loop_last = NULL; |
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338 | #endif /* ENABLE_LOOPBACK */ |
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339 | |||
340 | /* remember netif specific state information data */ |
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341 | netif->state = state; |
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342 | netif->num = netif_num; |
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343 | netif->input = input; |
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344 | |||
345 | NETIF_RESET_HINTS(netif); |
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346 | #if ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS |
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347 | netif->loop_cnt_current = 0; |
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348 | #endif /* ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS */ |
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349 | |||
350 | #if LWIP_IPV4 |
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351 | netif_set_addr(netif, ipaddr, netmask, gw); |
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352 | #endif /* LWIP_IPV4 */ |
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353 | |||
354 | /* call user specified initialization function for netif */ |
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355 | if (init(netif) != ERR_OK) { |
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356 | return NULL; |
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357 | } |
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358 | |||
359 | #if !LWIP_SINGLE_NETIF |
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360 | /* Assign a unique netif number in the range [0..254], so that (num+1) can |
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361 | serve as an interface index that fits in a u8_t. |
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362 | We assume that the new netif has not yet been added to the list here. |
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363 | This algorithm is O(n^2), but that should be OK for lwIP. |
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364 | */ |
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365 | { |
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366 | struct netif *netif2; |
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367 | int num_netifs; |
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368 | do { |
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369 | if (netif->num == 255) { |
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370 | netif->num = 0; |
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371 | } |
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372 | num_netifs = 0; |
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373 | for (netif2 = netif_list; netif2 != NULL; netif2 = netif2->next) { |
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374 | num_netifs++; |
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375 | LWIP_ASSERT("too many netifs, max. supported number is 255", num_netifs <= 255); |
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376 | if (netif2->num == netif->num) { |
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377 | netif->num++; |
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378 | break; |
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379 | } |
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380 | } |
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381 | } while (netif2 != NULL); |
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382 | } |
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383 | if (netif->num == 254) { |
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384 | netif_num = 0; |
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385 | } else { |
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386 | netif_num = (u8_t)(netif->num + 1); |
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387 | } |
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388 | |||
389 | /* add this netif to the list */ |
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390 | netif->next = netif_list; |
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391 | netif_list = netif; |
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392 | #endif /* "LWIP_SINGLE_NETIF */ |
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393 | mib2_netif_added(netif); |
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394 | |||
395 | #if LWIP_IGMP |
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396 | /* start IGMP processing */ |
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397 | if (netif->flags & NETIF_FLAG_IGMP) { |
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398 | igmp_start(netif); |
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399 | } |
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400 | #endif /* LWIP_IGMP */ |
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401 | |||
402 | LWIP_DEBUGF(NETIF_DEBUG, ("netif: added interface %c%c IP", |
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403 | netif->name[0], netif->name[1])); |
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404 | #if LWIP_IPV4 |
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405 | LWIP_DEBUGF(NETIF_DEBUG, (" addr ")); |
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406 | ip4_addr_debug_print(NETIF_DEBUG, ipaddr); |
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407 | LWIP_DEBUGF(NETIF_DEBUG, (" netmask ")); |
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408 | ip4_addr_debug_print(NETIF_DEBUG, netmask); |
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409 | LWIP_DEBUGF(NETIF_DEBUG, (" gw ")); |
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410 | ip4_addr_debug_print(NETIF_DEBUG, gw); |
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411 | #endif /* LWIP_IPV4 */ |
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412 | LWIP_DEBUGF(NETIF_DEBUG, ("\n")); |
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413 | |||
414 | netif_invoke_ext_callback(netif, LWIP_NSC_NETIF_ADDED, NULL); |
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415 | |||
416 | return netif; |
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417 | } |
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418 | |||
419 | #if LWIP_IPV4 |
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420 | /** |
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421 | * @ingroup netif_ip4 |
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422 | * Change IP address configuration for a network interface (including netmask |
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423 | * and default gateway). |
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424 | * |
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425 | * @param netif the network interface to change |
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426 | * @param ipaddr the new IP address |
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427 | * @param netmask the new netmask |
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428 | * @param gw the new default gateway |
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429 | */ |
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430 | void |
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431 | netif_set_addr(struct netif *netif, const ip4_addr_t *ipaddr, const ip4_addr_t *netmask, |
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432 | const ip4_addr_t *gw) |
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433 | { |
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434 | #if LWIP_NETIF_EXT_STATUS_CALLBACK |
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435 | u8_t something_changed = 0; |
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436 | |||
437 | if ((ip4_addr_cmp(ipaddr, netif_ip4_addr(netif)) == 0) || |
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438 | (ip4_addr_cmp(gw, netif_ip4_gw(netif)) == 0) || |
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439 | (ip4_addr_cmp(netmask, netif_ip4_netmask(netif)) == 0)) { |
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440 | something_changed = 1; |
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441 | } |
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442 | #endif |
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443 | |||
444 | if (ip4_addr_isany(ipaddr)) { |
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445 | /* when removing an address, we have to remove it *before* changing netmask/gw |
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446 | to ensure that tcp RST segment can be sent correctly */ |
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447 | netif_set_ipaddr(netif, ipaddr); |
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448 | netif_set_netmask(netif, netmask); |
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449 | netif_set_gw(netif, gw); |
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450 | } else { |
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451 | netif_set_netmask(netif, netmask); |
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452 | netif_set_gw(netif, gw); |
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453 | /* set ipaddr last to ensure netmask/gw have been set when status callback is called */ |
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454 | netif_set_ipaddr(netif, ipaddr); |
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455 | } |
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456 | |||
457 | #if LWIP_NETIF_EXT_STATUS_CALLBACK |
||
458 | if (something_changed != 0) { |
||
459 | netif_invoke_ext_callback(netif, LWIP_NSC_IPV4_SETTINGS_CHANGED, NULL); |
||
460 | } |
||
461 | #endif |
||
462 | } |
||
463 | #endif /* LWIP_IPV4*/ |
||
464 | |||
465 | /** |
||
466 | * @ingroup netif |
||
467 | * Remove a network interface from the list of lwIP netifs. |
||
468 | * |
||
469 | * @param netif the network interface to remove |
||
470 | */ |
||
471 | void |
||
472 | netif_remove(struct netif *netif) |
||
473 | { |
||
474 | #if LWIP_IPV6 |
||
475 | int i; |
||
476 | #endif |
||
477 | |||
478 | if (netif == NULL) { |
||
479 | return; |
||
480 | } |
||
481 | |||
482 | netif_invoke_ext_callback(netif, LWIP_NSC_NETIF_REMOVED, NULL); |
||
483 | |||
484 | #if LWIP_IPV4 |
||
485 | if (!ip4_addr_isany_val(*netif_ip4_addr(netif))) { |
||
486 | #if LWIP_TCP |
||
487 | tcp_netif_ip_addr_changed(netif_ip_addr4(netif), NULL); |
||
488 | #endif /* LWIP_TCP */ |
||
489 | #if LWIP_UDP |
||
490 | udp_netif_ip_addr_changed(netif_ip_addr4(netif), NULL); |
||
491 | #endif /* LWIP_UDP */ |
||
492 | #if LWIP_RAW |
||
493 | raw_netif_ip_addr_changed(netif_ip_addr4(netif), NULL); |
||
494 | #endif /* LWIP_RAW */ |
||
495 | } |
||
496 | |||
497 | #if LWIP_IGMP |
||
498 | /* stop IGMP processing */ |
||
499 | if (netif->flags & NETIF_FLAG_IGMP) { |
||
500 | igmp_stop(netif); |
||
501 | } |
||
502 | #endif /* LWIP_IGMP */ |
||
503 | #endif /* LWIP_IPV4*/ |
||
504 | |||
505 | #if LWIP_IPV6 |
||
506 | for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { |
||
507 | if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i))) { |
||
508 | #if LWIP_TCP |
||
509 | tcp_netif_ip_addr_changed(netif_ip_addr6(netif, i), NULL); |
||
510 | #endif /* LWIP_TCP */ |
||
511 | #if LWIP_UDP |
||
512 | udp_netif_ip_addr_changed(netif_ip_addr6(netif, i), NULL); |
||
513 | #endif /* LWIP_UDP */ |
||
514 | #if LWIP_RAW |
||
515 | raw_netif_ip_addr_changed(netif_ip_addr6(netif, i), NULL); |
||
516 | #endif /* LWIP_RAW */ |
||
517 | } |
||
518 | } |
||
519 | #if LWIP_IPV6_MLD |
||
520 | /* stop MLD processing */ |
||
521 | mld6_stop(netif); |
||
522 | #endif /* LWIP_IPV6_MLD */ |
||
523 | #endif /* LWIP_IPV6 */ |
||
524 | if (netif_is_up(netif)) { |
||
525 | /* set netif down before removing (call callback function) */ |
||
526 | netif_set_down(netif); |
||
527 | } |
||
528 | |||
529 | mib2_remove_ip4(netif); |
||
530 | |||
531 | /* this netif is default? */ |
||
532 | if (netif_default == netif) { |
||
533 | /* reset default netif */ |
||
534 | netif_set_default(NULL); |
||
535 | } |
||
536 | #if !LWIP_SINGLE_NETIF |
||
537 | /* is it the first netif? */ |
||
538 | if (netif_list == netif) { |
||
539 | netif_list = netif->next; |
||
540 | } else { |
||
541 | /* look for netif further down the list */ |
||
542 | struct netif *tmp_netif; |
||
543 | for (tmp_netif = netif_list; tmp_netif != NULL; tmp_netif = tmp_netif->next) { |
||
544 | if (tmp_netif->next == netif) { |
||
545 | tmp_netif->next = netif->next; |
||
546 | break; |
||
547 | } |
||
548 | } |
||
549 | if (tmp_netif == NULL) { |
||
550 | return; /* netif is not on the list */ |
||
551 | } |
||
552 | } |
||
553 | #endif /* !LWIP_SINGLE_NETIF */ |
||
554 | mib2_netif_removed(netif); |
||
555 | #if LWIP_NETIF_REMOVE_CALLBACK |
||
556 | if (netif->remove_callback) { |
||
557 | netif->remove_callback(netif); |
||
558 | } |
||
559 | #endif /* LWIP_NETIF_REMOVE_CALLBACK */ |
||
560 | LWIP_DEBUGF( NETIF_DEBUG, ("netif_remove: removed netif\n") ); |
||
561 | } |
||
562 | |||
563 | #if LWIP_IPV4 |
||
564 | /** |
||
565 | * @ingroup netif_ip4 |
||
566 | * Change the IP address of a network interface |
||
567 | * |
||
568 | * @param netif the network interface to change |
||
569 | * @param ipaddr the new IP address |
||
570 | * |
||
571 | * @note call netif_set_addr() if you also want to change netmask and |
||
572 | * default gateway |
||
573 | */ |
||
574 | void |
||
575 | netif_set_ipaddr(struct netif *netif, const ip4_addr_t *ipaddr) |
||
576 | { |
||
577 | ip_addr_t new_addr; |
||
578 | *ip_2_ip4(&new_addr) = (ipaddr ? *ipaddr : *IP4_ADDR_ANY4); |
||
579 | IP_SET_TYPE_VAL(new_addr, IPADDR_TYPE_V4); |
||
580 | |||
581 | /* address is actually being changed? */ |
||
582 | if (ip4_addr_cmp(ip_2_ip4(&new_addr), netif_ip4_addr(netif)) == 0) { |
||
583 | ip_addr_t old_addr; |
||
584 | ip_addr_copy(old_addr, *netif_ip_addr4(netif)); |
||
585 | |||
586 | LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_set_ipaddr: netif address being changed\n")); |
||
587 | #if LWIP_TCP |
||
588 | tcp_netif_ip_addr_changed(&old_addr, &new_addr); |
||
589 | #endif /* LWIP_TCP */ |
||
590 | #if LWIP_UDP |
||
591 | udp_netif_ip_addr_changed(&old_addr, &new_addr); |
||
592 | #endif /* LWIP_UDP */ |
||
593 | #if LWIP_RAW |
||
594 | raw_netif_ip_addr_changed(&old_addr, &new_addr); |
||
595 | #endif /* LWIP_RAW */ |
||
596 | |||
597 | mib2_remove_ip4(netif); |
||
598 | mib2_remove_route_ip4(0, netif); |
||
599 | /* set new IP address to netif */ |
||
600 | ip4_addr_set(ip_2_ip4(&netif->ip_addr), ipaddr); |
||
601 | IP_SET_TYPE_VAL(netif->ip_addr, IPADDR_TYPE_V4); |
||
602 | mib2_add_ip4(netif); |
||
603 | mib2_add_route_ip4(0, netif); |
||
604 | |||
605 | netif_issue_reports(netif, NETIF_REPORT_TYPE_IPV4); |
||
606 | |||
607 | NETIF_STATUS_CALLBACK(netif); |
||
608 | #if LWIP_NETIF_EXT_STATUS_CALLBACK |
||
609 | { |
||
610 | netif_ext_callback_args_t args; |
||
611 | args.ipv4_changed.old_address = &old_addr; |
||
612 | netif_invoke_ext_callback(netif, LWIP_NSC_IPV4_ADDRESS_CHANGED, &args); |
||
613 | } |
||
614 | #endif |
||
615 | } |
||
616 | |||
617 | LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("netif: IP address of interface %c%c set to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", |
||
618 | netif->name[0], netif->name[1], |
||
619 | ip4_addr1_16(netif_ip4_addr(netif)), |
||
620 | ip4_addr2_16(netif_ip4_addr(netif)), |
||
621 | ip4_addr3_16(netif_ip4_addr(netif)), |
||
622 | ip4_addr4_16(netif_ip4_addr(netif)))); |
||
623 | } |
||
624 | |||
625 | /** |
||
626 | * @ingroup netif_ip4 |
||
627 | * Change the default gateway for a network interface |
||
628 | * |
||
629 | * @param netif the network interface to change |
||
630 | * @param gw the new default gateway |
||
631 | * |
||
632 | * @note call netif_set_addr() if you also want to change ip address and netmask |
||
633 | */ |
||
634 | void |
||
635 | netif_set_gw(struct netif *netif, const ip4_addr_t *gw) |
||
636 | { |
||
637 | const ip4_addr_t *safe_gw = gw ? gw : IP4_ADDR_ANY4; |
||
638 | #if LWIP_NETIF_EXT_STATUS_CALLBACK |
||
639 | netif_ext_callback_args_t args; |
||
640 | ip_addr_t old_addr; |
||
641 | ip_addr_copy(old_addr, *netif_ip_gw4(netif)); |
||
642 | args.ipv4_gw_changed.old_address = &old_addr; |
||
643 | #endif |
||
644 | |||
645 | /* address is actually being changed? */ |
||
646 | if (ip4_addr_cmp(safe_gw, netif_ip4_gw(netif)) == 0) { |
||
647 | ip4_addr_set(ip_2_ip4(&netif->gw), gw); |
||
648 | IP_SET_TYPE_VAL(netif->gw, IPADDR_TYPE_V4); |
||
649 | LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("netif: GW address of interface %c%c set to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", |
||
650 | netif->name[0], netif->name[1], |
||
651 | ip4_addr1_16(netif_ip4_gw(netif)), |
||
652 | ip4_addr2_16(netif_ip4_gw(netif)), |
||
653 | ip4_addr3_16(netif_ip4_gw(netif)), |
||
654 | ip4_addr4_16(netif_ip4_gw(netif)))); |
||
655 | |||
656 | netif_invoke_ext_callback(netif, LWIP_NSC_IPV4_GATEWAY_CHANGED, &args); |
||
657 | } |
||
658 | } |
||
659 | |||
660 | void netif_set_pretend_tcp (struct netif *netif, u8_t pretend) |
||
661 | { |
||
662 | if (pretend) { |
||
663 | netif->flags |= NETIF_FLAG_PRETEND_TCP; |
||
664 | } else { |
||
665 | netif->flags &= ~NETIF_FLAG_PRETEND_TCP; |
||
666 | } |
||
667 | } |
||
668 | |||
669 | /** |
||
670 | * @ingroup netif_ip4 |
||
671 | * Change the netmask of a network interface |
||
672 | * |
||
673 | * @param netif the network interface to change |
||
674 | * @param netmask the new netmask |
||
675 | * |
||
676 | * @note call netif_set_addr() if you also want to change ip address and |
||
677 | * default gateway |
||
678 | */ |
||
679 | void |
||
680 | netif_set_netmask(struct netif *netif, const ip4_addr_t *netmask) |
||
681 | { |
||
682 | const ip4_addr_t *safe_netmask = netmask ? netmask : IP4_ADDR_ANY4; |
||
683 | #if LWIP_NETIF_EXT_STATUS_CALLBACK |
||
684 | netif_ext_callback_args_t args; |
||
685 | ip_addr_t old_addr; |
||
686 | ip_addr_copy(old_addr, *netif_ip_netmask4(netif)); |
||
687 | args.ipv4_nm_changed.old_address = &old_addr; |
||
688 | #endif |
||
689 | |||
690 | /* address is actually being changed? */ |
||
691 | if (ip4_addr_cmp(safe_netmask, netif_ip4_netmask(netif)) == 0) { |
||
692 | mib2_remove_route_ip4(0, netif); |
||
693 | /* set new netmask to netif */ |
||
694 | ip4_addr_set(ip_2_ip4(&netif->netmask), netmask); |
||
695 | IP_SET_TYPE_VAL(netif->netmask, IPADDR_TYPE_V4); |
||
696 | mib2_add_route_ip4(0, netif); |
||
697 | LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("netif: netmask of interface %c%c set to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", |
||
698 | netif->name[0], netif->name[1], |
||
699 | ip4_addr1_16(netif_ip4_netmask(netif)), |
||
700 | ip4_addr2_16(netif_ip4_netmask(netif)), |
||
701 | ip4_addr3_16(netif_ip4_netmask(netif)), |
||
702 | ip4_addr4_16(netif_ip4_netmask(netif)))); |
||
703 | |||
704 | netif_invoke_ext_callback(netif, LWIP_NSC_IPV4_NETMASK_CHANGED, &args); |
||
705 | } |
||
706 | } |
||
707 | #endif /* LWIP_IPV4 */ |
||
708 | |||
709 | int netif_is_named (struct netif *netif, const char name[3]) |
||
710 | { |
||
711 | u8_t num = name[2] - '0'; |
||
712 | |||
713 | return (!memcmp(netif->name, name, 2) && netif->num == num); |
||
714 | } |
||
715 | |||
716 | /** |
||
717 | * @ingroup netif |
||
718 | * Set a network interface as the default network interface |
||
719 | * (used to output all packets for which no specific route is found) |
||
720 | * |
||
721 | * @param netif the default network interface |
||
722 | */ |
||
723 | void |
||
724 | netif_set_default(struct netif *netif) |
||
725 | { |
||
726 | if (netif == NULL) { |
||
727 | /* remove default route */ |
||
728 | mib2_remove_route_ip4(1, netif); |
||
729 | } else { |
||
730 | /* install default route */ |
||
731 | mib2_add_route_ip4(1, netif); |
||
732 | } |
||
733 | netif_default = netif; |
||
734 | LWIP_DEBUGF(NETIF_DEBUG, ("netif: setting default interface %c%c\n", |
||
735 | netif ? netif->name[0] : '\'', netif ? netif->name[1] : '\'')); |
||
736 | } |
||
737 | |||
738 | /** |
||
739 | * @ingroup netif |
||
740 | * Bring an interface up, available for processing |
||
741 | * traffic. |
||
742 | */ |
||
743 | void |
||
744 | netif_set_up(struct netif *netif) |
||
745 | { |
||
746 | if (!(netif->flags & NETIF_FLAG_UP)) { |
||
747 | netif_set_flags(netif, NETIF_FLAG_UP); |
||
748 | |||
749 | MIB2_COPY_SYSUPTIME_TO(&netif->ts); |
||
750 | |||
751 | NETIF_STATUS_CALLBACK(netif); |
||
752 | |||
753 | #if LWIP_NETIF_EXT_STATUS_CALLBACK |
||
754 | { |
||
755 | netif_ext_callback_args_t args; |
||
756 | args.status_changed.state = 1; |
||
757 | netif_invoke_ext_callback(netif, LWIP_NSC_STATUS_CHANGED, &args); |
||
758 | } |
||
759 | #endif |
||
760 | |||
761 | if (netif->flags & NETIF_FLAG_LINK_UP) { |
||
762 | netif_issue_reports(netif, NETIF_REPORT_TYPE_IPV4 | NETIF_REPORT_TYPE_IPV6); |
||
763 | } |
||
764 | } |
||
765 | } |
||
766 | |||
767 | /** Send ARP/IGMP/MLD/RS events, e.g. on link-up/netif-up or addr-change |
||
768 | */ |
||
769 | static void |
||
770 | netif_issue_reports(struct netif *netif, u8_t report_type) |
||
771 | { |
||
772 | #if LWIP_IPV4 |
||
773 | if ((report_type & NETIF_REPORT_TYPE_IPV4) && |
||
774 | !ip4_addr_isany_val(*netif_ip4_addr(netif))) { |
||
775 | #if LWIP_ARP |
||
776 | /* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */ |
||
777 | if (netif->flags & (NETIF_FLAG_ETHARP)) { |
||
778 | etharp_gratuitous(netif); |
||
779 | } |
||
780 | #endif /* LWIP_ARP */ |
||
781 | |||
782 | #if LWIP_IGMP |
||
783 | /* resend IGMP memberships */ |
||
784 | if (netif->flags & NETIF_FLAG_IGMP) { |
||
785 | igmp_report_groups(netif); |
||
786 | } |
||
787 | #endif /* LWIP_IGMP */ |
||
788 | } |
||
789 | #endif /* LWIP_IPV4 */ |
||
790 | |||
791 | #if LWIP_IPV6 |
||
792 | if (report_type & NETIF_REPORT_TYPE_IPV6) { |
||
793 | #if LWIP_IPV6_MLD |
||
794 | /* send mld memberships */ |
||
795 | mld6_report_groups(netif); |
||
796 | #endif /* LWIP_IPV6_MLD */ |
||
797 | #if LWIP_IPV6_SEND_ROUTER_SOLICIT |
||
798 | /* Send Router Solicitation messages. */ |
||
799 | netif->rs_count = LWIP_ND6_MAX_MULTICAST_SOLICIT; |
||
800 | #endif /* LWIP_IPV6_SEND_ROUTER_SOLICIT */ |
||
801 | } |
||
802 | #endif /* LWIP_IPV6 */ |
||
803 | } |
||
804 | |||
805 | /** |
||
806 | * @ingroup netif |
||
807 | * Bring an interface down, disabling any traffic processing. |
||
808 | */ |
||
809 | void |
||
810 | netif_set_down(struct netif *netif) |
||
811 | { |
||
812 | if (netif->flags & NETIF_FLAG_UP) { |
||
813 | #if LWIP_NETIF_EXT_STATUS_CALLBACK |
||
814 | { |
||
815 | netif_ext_callback_args_t args; |
||
816 | args.status_changed.state = 0; |
||
817 | netif_invoke_ext_callback(netif, LWIP_NSC_STATUS_CHANGED, &args); |
||
818 | } |
||
819 | #endif |
||
820 | |||
821 | netif_clear_flags(netif, NETIF_FLAG_UP); |
||
822 | MIB2_COPY_SYSUPTIME_TO(&netif->ts); |
||
823 | |||
824 | #if LWIP_IPV4 && LWIP_ARP |
||
825 | if (netif->flags & NETIF_FLAG_ETHARP) { |
||
826 | etharp_cleanup_netif(netif); |
||
827 | } |
||
828 | #endif /* LWIP_IPV4 && LWIP_ARP */ |
||
829 | |||
830 | #if LWIP_IPV6 |
||
831 | nd6_cleanup_netif(netif); |
||
832 | #endif /* LWIP_IPV6 */ |
||
833 | |||
834 | NETIF_STATUS_CALLBACK(netif); |
||
835 | } |
||
836 | } |
||
837 | |||
838 | #if LWIP_NETIF_STATUS_CALLBACK |
||
839 | /** |
||
840 | * @ingroup netif |
||
841 | * Set callback to be called when interface is brought up/down or address is changed while up |
||
842 | */ |
||
843 | void |
||
844 | netif_set_status_callback(struct netif *netif, netif_status_callback_fn status_callback) |
||
845 | { |
||
846 | if (netif) { |
||
847 | netif->status_callback = status_callback; |
||
848 | } |
||
849 | } |
||
850 | #endif /* LWIP_NETIF_STATUS_CALLBACK */ |
||
851 | |||
852 | #if LWIP_NETIF_REMOVE_CALLBACK |
||
853 | /** |
||
854 | * @ingroup netif |
||
855 | * Set callback to be called when the interface has been removed |
||
856 | */ |
||
857 | void |
||
858 | netif_set_remove_callback(struct netif *netif, netif_status_callback_fn remove_callback) |
||
859 | { |
||
860 | if (netif) { |
||
861 | netif->remove_callback = remove_callback; |
||
862 | } |
||
863 | } |
||
864 | #endif /* LWIP_NETIF_REMOVE_CALLBACK */ |
||
865 | |||
866 | /** |
||
867 | * @ingroup netif |
||
868 | * Called by a driver when its link goes up |
||
869 | */ |
||
870 | void |
||
871 | netif_set_link_up(struct netif *netif) |
||
872 | { |
||
873 | if (!(netif->flags & NETIF_FLAG_LINK_UP)) { |
||
874 | netif_set_flags(netif, NETIF_FLAG_LINK_UP); |
||
875 | |||
876 | #if LWIP_DHCP |
||
877 | dhcp_network_changed(netif); |
||
878 | #endif /* LWIP_DHCP */ |
||
879 | |||
880 | #if LWIP_AUTOIP |
||
881 | autoip_network_changed(netif); |
||
882 | #endif /* LWIP_AUTOIP */ |
||
883 | |||
884 | if (netif->flags & NETIF_FLAG_UP) { |
||
885 | netif_issue_reports(netif, NETIF_REPORT_TYPE_IPV4 | NETIF_REPORT_TYPE_IPV6); |
||
886 | } |
||
887 | NETIF_LINK_CALLBACK(netif); |
||
888 | #if LWIP_NETIF_EXT_STATUS_CALLBACK |
||
889 | { |
||
890 | netif_ext_callback_args_t args; |
||
891 | args.link_changed.state = 1; |
||
892 | netif_invoke_ext_callback(netif, LWIP_NSC_LINK_CHANGED, &args); |
||
893 | } |
||
894 | #endif |
||
895 | } |
||
896 | } |
||
897 | |||
898 | /** |
||
899 | * @ingroup netif |
||
900 | * Called by a driver when its link goes down |
||
901 | */ |
||
902 | void |
||
903 | netif_set_link_down(struct netif *netif ) |
||
904 | { |
||
905 | if (netif->flags & NETIF_FLAG_LINK_UP) { |
||
906 | netif_clear_flags(netif, NETIF_FLAG_LINK_UP); |
||
907 | NETIF_LINK_CALLBACK(netif); |
||
908 | #if LWIP_NETIF_EXT_STATUS_CALLBACK |
||
909 | { |
||
910 | netif_ext_callback_args_t args; |
||
911 | args.link_changed.state = 0; |
||
912 | netif_invoke_ext_callback(netif, LWIP_NSC_LINK_CHANGED, &args); |
||
913 | } |
||
914 | #endif |
||
915 | } |
||
916 | } |
||
917 | |||
918 | #if LWIP_NETIF_LINK_CALLBACK |
||
919 | /** |
||
920 | * @ingroup netif |
||
921 | * Set callback to be called when link is brought up/down |
||
922 | */ |
||
923 | void |
||
924 | netif_set_link_callback(struct netif *netif, netif_status_callback_fn link_callback) |
||
925 | { |
||
926 | if (netif) { |
||
927 | netif->link_callback = link_callback; |
||
928 | } |
||
929 | } |
||
930 | #endif /* LWIP_NETIF_LINK_CALLBACK */ |
||
931 | |||
932 | #if ENABLE_LOOPBACK |
||
933 | /** |
||
934 | * @ingroup netif |
||
935 | * Send an IP packet to be received on the same netif (loopif-like). |
||
936 | * The pbuf is simply copied and handed back to netif->input. |
||
937 | * In multithreaded mode, this is done directly since netif->input must put |
||
938 | * the packet on a queue. |
||
939 | * In callback mode, the packet is put on an internal queue and is fed to |
||
940 | * netif->input by netif_poll(). |
||
941 | * |
||
942 | * @param netif the lwip network interface structure |
||
943 | * @param p the (IP) packet to 'send' |
||
944 | * @return ERR_OK if the packet has been sent |
||
945 | * ERR_MEM if the pbuf used to copy the packet couldn't be allocated |
||
946 | */ |
||
947 | err_t |
||
948 | netif_loop_output(struct netif *netif, struct pbuf *p) |
||
949 | { |
||
950 | struct pbuf *r; |
||
951 | err_t err; |
||
952 | struct pbuf *last; |
||
953 | #if LWIP_LOOPBACK_MAX_PBUFS |
||
954 | u16_t clen = 0; |
||
955 | #endif /* LWIP_LOOPBACK_MAX_PBUFS */ |
||
956 | /* If we have a loopif, SNMP counters are adjusted for it, |
||
957 | * if not they are adjusted for 'netif'. */ |
||
958 | #if MIB2_STATS |
||
959 | #if LWIP_HAVE_LOOPIF |
||
960 | struct netif *stats_if = &loop_netif; |
||
961 | #else /* LWIP_HAVE_LOOPIF */ |
||
962 | struct netif *stats_if = netif; |
||
963 | #endif /* LWIP_HAVE_LOOPIF */ |
||
964 | #endif /* MIB2_STATS */ |
||
965 | SYS_ARCH_DECL_PROTECT(lev); |
||
966 | |||
967 | /* Allocate a new pbuf */ |
||
968 | r = pbuf_alloc(PBUF_LINK, p->tot_len, PBUF_RAM); |
||
969 | if (r == NULL) { |
||
970 | LINK_STATS_INC(link.memerr); |
||
971 | LINK_STATS_INC(link.drop); |
||
972 | MIB2_STATS_NETIF_INC(stats_if, ifoutdiscards); |
||
973 | return ERR_MEM; |
||
974 | } |
||
975 | #if LWIP_LOOPBACK_MAX_PBUFS |
||
976 | clen = pbuf_clen(r); |
||
977 | /* check for overflow or too many pbuf on queue */ |
||
978 | if (((netif->loop_cnt_current + clen) < netif->loop_cnt_current) || |
||
979 | ((netif->loop_cnt_current + clen) > LWIP_MIN(LWIP_LOOPBACK_MAX_PBUFS, 0xFFFF))) { |
||
980 | pbuf_free(r); |
||
981 | LINK_STATS_INC(link.memerr); |
||
982 | LINK_STATS_INC(link.drop); |
||
983 | MIB2_STATS_NETIF_INC(stats_if, ifoutdiscards); |
||
984 | return ERR_MEM; |
||
985 | } |
||
986 | netif->loop_cnt_current = (u16_t)(netif->loop_cnt_current + clen); |
||
987 | #endif /* LWIP_LOOPBACK_MAX_PBUFS */ |
||
988 | |||
989 | /* Copy the whole pbuf queue p into the single pbuf r */ |
||
990 | if ((err = pbuf_copy(r, p)) != ERR_OK) { |
||
991 | pbuf_free(r); |
||
992 | LINK_STATS_INC(link.memerr); |
||
993 | LINK_STATS_INC(link.drop); |
||
994 | MIB2_STATS_NETIF_INC(stats_if, ifoutdiscards); |
||
995 | return err; |
||
996 | } |
||
997 | |||
998 | /* Put the packet on a linked list which gets emptied through calling |
||
999 | netif_poll(). */ |
||
1000 | |||
1001 | /* let last point to the last pbuf in chain r */ |
||
1002 | for (last = r; last->next != NULL; last = last->next) { |
||
1003 | /* nothing to do here, just get to the last pbuf */ |
||
1004 | } |
||
1005 | |||
1006 | SYS_ARCH_PROTECT(lev); |
||
1007 | if (netif->loop_first != NULL) { |
||
1008 | LWIP_ASSERT("if first != NULL, last must also be != NULL", netif->loop_last != NULL); |
||
1009 | netif->loop_last->next = r; |
||
1010 | netif->loop_last = last; |
||
1011 | } else { |
||
1012 | netif->loop_first = r; |
||
1013 | netif->loop_last = last; |
||
1014 | } |
||
1015 | SYS_ARCH_UNPROTECT(lev); |
||
1016 | |||
1017 | LINK_STATS_INC(link.xmit); |
||
1018 | MIB2_STATS_NETIF_ADD(stats_if, ifoutoctets, p->tot_len); |
||
1019 | MIB2_STATS_NETIF_INC(stats_if, ifoutucastpkts); |
||
1020 | |||
1021 | #if LWIP_NETIF_LOOPBACK_MULTITHREADING |
||
1022 | /* For multithreading environment, schedule a call to netif_poll */ |
||
1023 | tcpip_try_callback((tcpip_callback_fn)netif_poll, netif); |
||
1024 | #endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */ |
||
1025 | |||
1026 | return ERR_OK; |
||
1027 | } |
||
1028 | |||
1029 | #if LWIP_HAVE_LOOPIF |
||
1030 | #if LWIP_IPV4 |
||
1031 | static err_t |
||
1032 | netif_loop_output_ipv4(struct netif *netif, struct pbuf *p, const ip4_addr_t *addr) |
||
1033 | { |
||
1034 | LWIP_UNUSED_ARG(addr); |
||
1035 | return netif_loop_output(netif, p); |
||
1036 | } |
||
1037 | #endif /* LWIP_IPV4 */ |
||
1038 | |||
1039 | #if LWIP_IPV6 |
||
1040 | static err_t |
||
1041 | netif_loop_output_ipv6(struct netif *netif, struct pbuf *p, const ip6_addr_t *addr) |
||
1042 | { |
||
1043 | LWIP_UNUSED_ARG(addr); |
||
1044 | return netif_loop_output(netif, p); |
||
1045 | } |
||
1046 | #endif /* LWIP_IPV6 */ |
||
1047 | #endif /* LWIP_HAVE_LOOPIF */ |
||
1048 | |||
1049 | |||
1050 | /** |
||
1051 | * Call netif_poll() in the main loop of your application. This is to prevent |
||
1052 | * reentering non-reentrant functions like tcp_input(). Packets passed to |
||
1053 | * netif_loop_output() are put on a list that is passed to netif->input() by |
||
1054 | * netif_poll(). |
||
1055 | */ |
||
1056 | void |
||
1057 | netif_poll(struct netif *netif) |
||
1058 | { |
||
1059 | /* If we have a loopif, SNMP counters are adjusted for it, |
||
1060 | * if not they are adjusted for 'netif'. */ |
||
1061 | #if MIB2_STATS |
||
1062 | #if LWIP_HAVE_LOOPIF |
||
1063 | struct netif *stats_if = &loop_netif; |
||
1064 | #else /* LWIP_HAVE_LOOPIF */ |
||
1065 | struct netif *stats_if = netif; |
||
1066 | #endif /* LWIP_HAVE_LOOPIF */ |
||
1067 | #endif /* MIB2_STATS */ |
||
1068 | SYS_ARCH_DECL_PROTECT(lev); |
||
1069 | |||
1070 | /* Get a packet from the list. With SYS_LIGHTWEIGHT_PROT=1, this is protected */ |
||
1071 | SYS_ARCH_PROTECT(lev); |
||
1072 | while (netif->loop_first != NULL) { |
||
1073 | struct pbuf *in, *in_end; |
||
1074 | #if LWIP_LOOPBACK_MAX_PBUFS |
||
1075 | u8_t clen = 1; |
||
1076 | #endif /* LWIP_LOOPBACK_MAX_PBUFS */ |
||
1077 | |||
1078 | in = in_end = netif->loop_first; |
||
1079 | while (in_end->len != in_end->tot_len) { |
||
1080 | LWIP_ASSERT("bogus pbuf: len != tot_len but next == NULL!", in_end->next != NULL); |
||
1081 | in_end = in_end->next; |
||
1082 | #if LWIP_LOOPBACK_MAX_PBUFS |
||
1083 | clen++; |
||
1084 | #endif /* LWIP_LOOPBACK_MAX_PBUFS */ |
||
1085 | } |
||
1086 | #if LWIP_LOOPBACK_MAX_PBUFS |
||
1087 | /* adjust the number of pbufs on queue */ |
||
1088 | LWIP_ASSERT("netif->loop_cnt_current underflow", |
||
1089 | ((netif->loop_cnt_current - clen) < netif->loop_cnt_current)); |
||
1090 | netif->loop_cnt_current = (u16_t)(netif->loop_cnt_current - clen); |
||
1091 | #endif /* LWIP_LOOPBACK_MAX_PBUFS */ |
||
1092 | |||
1093 | /* 'in_end' now points to the last pbuf from 'in' */ |
||
1094 | if (in_end == netif->loop_last) { |
||
1095 | /* this was the last pbuf in the list */ |
||
1096 | netif->loop_first = netif->loop_last = NULL; |
||
1097 | } else { |
||
1098 | /* pop the pbuf off the list */ |
||
1099 | netif->loop_first = in_end->next; |
||
1100 | LWIP_ASSERT("should not be null since first != last!", netif->loop_first != NULL); |
||
1101 | } |
||
1102 | /* De-queue the pbuf from its successors on the 'loop_' list. */ |
||
1103 | in_end->next = NULL; |
||
1104 | SYS_ARCH_UNPROTECT(lev); |
||
1105 | |||
1106 | in->if_idx = netif_get_index(netif); |
||
1107 | |||
1108 | LINK_STATS_INC(link.recv); |
||
1109 | MIB2_STATS_NETIF_ADD(stats_if, ifinoctets, in->tot_len); |
||
1110 | MIB2_STATS_NETIF_INC(stats_if, ifinucastpkts); |
||
1111 | /* loopback packets are always IP packets! */ |
||
1112 | if (ip_input(in, netif) != ERR_OK) { |
||
1113 | pbuf_free(in); |
||
1114 | } |
||
1115 | SYS_ARCH_PROTECT(lev); |
||
1116 | } |
||
1117 | SYS_ARCH_UNPROTECT(lev); |
||
1118 | } |
||
1119 | |||
1120 | #if !LWIP_NETIF_LOOPBACK_MULTITHREADING |
||
1121 | /** |
||
1122 | * Calls netif_poll() for every netif on the netif_list. |
||
1123 | */ |
||
1124 | void |
||
1125 | netif_poll_all(void) |
||
1126 | { |
||
1127 | struct netif *netif; |
||
1128 | /* loop through netifs */ |
||
1129 | NETIF_FOREACH(netif) { |
||
1130 | netif_poll(netif); |
||
1131 | } |
||
1132 | } |
||
1133 | #endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */ |
||
1134 | #endif /* ENABLE_LOOPBACK */ |
||
1135 | |||
1136 | #if LWIP_NUM_NETIF_CLIENT_DATA > 0 |
||
1137 | /** |
||
1138 | * @ingroup netif_cd |
||
1139 | * Allocate an index to store data in client_data member of struct netif. |
||
1140 | * Returned value is an index in mentioned array. |
||
1141 | * @see LWIP_NUM_NETIF_CLIENT_DATA |
||
1142 | */ |
||
1143 | u8_t |
||
1144 | netif_alloc_client_data_id(void) |
||
1145 | { |
||
1146 | u8_t result = netif_client_id; |
||
1147 | netif_client_id++; |
||
1148 | |||
1149 | #if LWIP_NUM_NETIF_CLIENT_DATA > 256 |
||
1150 | #error LWIP_NUM_NETIF_CLIENT_DATA must be <= 256 |
||
1151 | #endif |
||
1152 | LWIP_ASSERT("Increase LWIP_NUM_NETIF_CLIENT_DATA in lwipopts.h", result < LWIP_NUM_NETIF_CLIENT_DATA); |
||
1153 | return (u8_t)(result + LWIP_NETIF_CLIENT_DATA_INDEX_MAX); |
||
1154 | } |
||
1155 | #endif |
||
1156 | |||
1157 | #if LWIP_IPV6 |
||
1158 | /** |
||
1159 | * @ingroup netif_ip6 |
||
1160 | * Change an IPv6 address of a network interface |
||
1161 | * |
||
1162 | * @param netif the network interface to change |
||
1163 | * @param addr_idx index of the IPv6 address |
||
1164 | * @param addr6 the new IPv6 address |
||
1165 | * |
||
1166 | * @note call netif_ip6_addr_set_state() to set the address valid/temptative |
||
1167 | */ |
||
1168 | void |
||
1169 | netif_ip6_addr_set(struct netif *netif, s8_t addr_idx, const ip6_addr_t *addr6) |
||
1170 | { |
||
1171 | LWIP_ASSERT("addr6 != NULL", addr6 != NULL); |
||
1172 | netif_ip6_addr_set_parts(netif, addr_idx, addr6->addr[0], addr6->addr[1], |
||
1173 | addr6->addr[2], addr6->addr[3]); |
||
1174 | } |
||
1175 | |||
1176 | /* |
||
1177 | * Change an IPv6 address of a network interface (internal version taking 4 * u32_t) |
||
1178 | * |
||
1179 | * @param netif the network interface to change |
||
1180 | * @param addr_idx index of the IPv6 address |
||
1181 | * @param i0 word0 of the new IPv6 address |
||
1182 | * @param i1 word1 of the new IPv6 address |
||
1183 | * @param i2 word2 of the new IPv6 address |
||
1184 | * @param i3 word3 of the new IPv6 address |
||
1185 | */ |
||
1186 | void |
||
1187 | netif_ip6_addr_set_parts(struct netif *netif, s8_t addr_idx, u32_t i0, u32_t i1, u32_t i2, u32_t i3) |
||
1188 | { |
||
1189 | ip_addr_t old_addr; |
||
1190 | ip_addr_t new_ipaddr; |
||
1191 | LWIP_ASSERT("netif != NULL", netif != NULL); |
||
1192 | LWIP_ASSERT("invalid index", addr_idx < LWIP_IPV6_NUM_ADDRESSES); |
||
1193 | |||
1194 | ip6_addr_copy(*ip_2_ip6(&old_addr), *netif_ip6_addr(netif, addr_idx)); |
||
1195 | IP_SET_TYPE_VAL(old_addr, IPADDR_TYPE_V6); |
||
1196 | |||
1197 | /* address is actually being changed? */ |
||
1198 | if ((ip_2_ip6(&old_addr)->addr[0] != i0) || (ip_2_ip6(&old_addr)->addr[1] != i1) || |
||
1199 | (ip_2_ip6(&old_addr)->addr[2] != i2) || (ip_2_ip6(&old_addr)->addr[3] != i3)) { |
||
1200 | LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_ip6_addr_set: netif address being changed\n")); |
||
1201 | |||
1202 | IP_ADDR6(&new_ipaddr, i0, i1, i2, i3); |
||
1203 | ip6_addr_assign_zone(ip_2_ip6(&new_ipaddr), IP6_UNICAST, netif); |
||
1204 | |||
1205 | if (netif_ip6_addr_state(netif, addr_idx) & IP6_ADDR_VALID) { |
||
1206 | #if LWIP_TCP |
||
1207 | tcp_netif_ip_addr_changed(netif_ip_addr6(netif, addr_idx), &new_ipaddr); |
||
1208 | #endif /* LWIP_TCP */ |
||
1209 | #if LWIP_UDP |
||
1210 | udp_netif_ip_addr_changed(netif_ip_addr6(netif, addr_idx), &new_ipaddr); |
||
1211 | #endif /* LWIP_UDP */ |
||
1212 | #if LWIP_RAW |
||
1213 | raw_netif_ip_addr_changed(netif_ip_addr6(netif, addr_idx), &new_ipaddr); |
||
1214 | #endif /* LWIP_RAW */ |
||
1215 | } |
||
1216 | /* @todo: remove/readd mib2 ip6 entries? */ |
||
1217 | |||
1218 | ip_addr_copy(netif->ip6_addr[addr_idx], new_ipaddr); |
||
1219 | |||
1220 | if (netif_ip6_addr_state(netif, addr_idx) & IP6_ADDR_VALID) { |
||
1221 | netif_issue_reports(netif, NETIF_REPORT_TYPE_IPV6); |
||
1222 | NETIF_STATUS_CALLBACK(netif); |
||
1223 | } |
||
1224 | |||
1225 | #if LWIP_NETIF_EXT_STATUS_CALLBACK |
||
1226 | { |
||
1227 | netif_ext_callback_args_t args; |
||
1228 | args.ipv6_set.addr_index = addr_idx; |
||
1229 | args.ipv6_set.old_address = &old_addr; |
||
1230 | netif_invoke_ext_callback(netif, LWIP_NSC_IPV6_SET, &args); |
||
1231 | } |
||
1232 | #endif |
||
1233 | } |
||
1234 | |||
1235 | LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("netif: IPv6 address %d of interface %c%c set to %s/0x%"X8_F"\n", |
||
1236 | addr_idx, netif->name[0], netif->name[1], ip6addr_ntoa(netif_ip6_addr(netif, addr_idx)), |
||
1237 | netif_ip6_addr_state(netif, addr_idx))); |
||
1238 | } |
||
1239 | |||
1240 | /** |
||
1241 | * @ingroup netif_ip6 |
||
1242 | * Change the state of an IPv6 address of a network interface |
||
1243 | * (INVALID, TEMPTATIVE, PREFERRED, DEPRECATED, where TEMPTATIVE |
||
1244 | * includes the number of checks done, see ip6_addr.h) |
||
1245 | * |
||
1246 | * @param netif the network interface to change |
||
1247 | * @param addr_idx index of the IPv6 address |
||
1248 | * @param state the new IPv6 address state |
||
1249 | */ |
||
1250 | void |
||
1251 | netif_ip6_addr_set_state(struct netif *netif, s8_t addr_idx, u8_t state) |
||
1252 | { |
||
1253 | u8_t old_state; |
||
1254 | LWIP_ASSERT("netif != NULL", netif != NULL); |
||
1255 | LWIP_ASSERT("invalid index", addr_idx < LWIP_IPV6_NUM_ADDRESSES); |
||
1256 | |||
1257 | old_state = netif_ip6_addr_state(netif, addr_idx); |
||
1258 | /* state is actually being changed? */ |
||
1259 | if (old_state != state) { |
||
1260 | u8_t old_valid = old_state & IP6_ADDR_VALID; |
||
1261 | u8_t new_valid = state & IP6_ADDR_VALID; |
||
1262 | LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_ip6_addr_set_state: netif address state being changed\n")); |
||
1263 | |||
1264 | #if LWIP_IPV6_MLD |
||
1265 | /* Reevaluate solicited-node multicast group membership. */ |
||
1266 | if (netif->flags & NETIF_FLAG_MLD6) { |
||
1267 | nd6_adjust_mld_membership(netif, addr_idx, state); |
||
1268 | } |
||
1269 | #endif /* LWIP_IPV6_MLD */ |
||
1270 | |||
1271 | if (old_valid && !new_valid) { |
||
1272 | /* address about to be removed by setting invalid */ |
||
1273 | #if LWIP_TCP |
||
1274 | tcp_netif_ip_addr_changed(netif_ip_addr6(netif, addr_idx), NULL); |
||
1275 | #endif /* LWIP_TCP */ |
||
1276 | #if LWIP_UDP |
||
1277 | udp_netif_ip_addr_changed(netif_ip_addr6(netif, addr_idx), NULL); |
||
1278 | #endif /* LWIP_UDP */ |
||
1279 | #if LWIP_RAW |
||
1280 | raw_netif_ip_addr_changed(netif_ip_addr6(netif, addr_idx), NULL); |
||
1281 | #endif /* LWIP_RAW */ |
||
1282 | /* @todo: remove mib2 ip6 entries? */ |
||
1283 | } |
||
1284 | netif->ip6_addr_state[addr_idx] = state; |
||
1285 | |||
1286 | if (!old_valid && new_valid) { |
||
1287 | /* address added by setting valid */ |
||
1288 | /* This is a good moment to check that the address is properly zoned. */ |
||
1289 | IP6_ADDR_ZONECHECK_NETIF(netif_ip6_addr(netif, addr_idx), netif); |
||
1290 | /* @todo: add mib2 ip6 entries? */ |
||
1291 | netif_issue_reports(netif, NETIF_REPORT_TYPE_IPV6); |
||
1292 | } |
||
1293 | if ((old_state & ~IP6_ADDR_TENTATIVE_COUNT_MASK) != |
||
1294 | (state & ~IP6_ADDR_TENTATIVE_COUNT_MASK)) { |
||
1295 | /* address state has changed -> call the callback function */ |
||
1296 | NETIF_STATUS_CALLBACK(netif); |
||
1297 | } |
||
1298 | } |
||
1299 | |||
1300 | #if LWIP_NETIF_EXT_STATUS_CALLBACK |
||
1301 | { |
||
1302 | netif_ext_callback_args_t args; |
||
1303 | args.ipv6_addr_state_changed.addr_index = addr_idx; |
||
1304 | args.ipv6_addr_state_changed.address = netif_ip_addr6(netif, addr_idx); |
||
1305 | netif_invoke_ext_callback(netif, LWIP_NSC_IPV6_ADDR_STATE_CHANGED, &args); |
||
1306 | } |
||
1307 | #endif |
||
1308 | |||
1309 | LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("netif: IPv6 address %d of interface %c%c set to %s/0x%"X8_F"\n", |
||
1310 | addr_idx, netif->name[0], netif->name[1], ip6addr_ntoa(netif_ip6_addr(netif, addr_idx)), |
||
1311 | netif_ip6_addr_state(netif, addr_idx))); |
||
1312 | } |
||
1313 | |||
1314 | /** |
||
1315 | * Checks if a specific local address is present on the netif and returns its |
||
1316 | * index. Depending on its state, it may or may not be assigned to the |
||
1317 | * interface (as per RFC terminology). |
||
1318 | * |
||
1319 | * The given address may or may not be zoned (i.e., have a zone index other |
||
1320 | * than IP6_NO_ZONE). If the address is zoned, it must have the correct zone |
||
1321 | * for the given netif, or no match will be found. |
||
1322 | * |
||
1323 | * @param netif the netif to check |
||
1324 | * @param ip6addr the IPv6 address to find |
||
1325 | * @return >= 0: address found, this is its index |
||
1326 | * -1: address not found on this netif |
||
1327 | */ |
||
1328 | s8_t |
||
1329 | netif_get_ip6_addr_match(struct netif *netif, const ip6_addr_t *ip6addr) |
||
1330 | { |
||
1331 | s8_t i; |
||
1332 | |||
1333 | #if LWIP_IPV6_SCOPES |
||
1334 | if (ip6_addr_has_zone(ip6addr) && !ip6_addr_test_zone(ip6addr, netif)) { |
||
1335 | return -1; /* wrong zone, no match */ |
||
1336 | } |
||
1337 | #endif /* LWIP_IPV6_SCOPES */ |
||
1338 | |||
1339 | for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { |
||
1340 | if (!ip6_addr_isinvalid(netif_ip6_addr_state(netif, i)) && |
||
1341 | ip6_addr_cmp_zoneless(netif_ip6_addr(netif, i), ip6addr)) { |
||
1342 | return i; |
||
1343 | } |
||
1344 | } |
||
1345 | return -1; |
||
1346 | } |
||
1347 | |||
1348 | /** |
||
1349 | * @ingroup netif_ip6 |
||
1350 | * Create a link-local IPv6 address on a netif (stored in slot 0) |
||
1351 | * |
||
1352 | * @param netif the netif to create the address on |
||
1353 | * @param from_mac_48bit if != 0, assume hwadr is a 48-bit MAC address (std conversion) |
||
1354 | * if == 0, use hwaddr directly as interface ID |
||
1355 | */ |
||
1356 | void |
||
1357 | netif_create_ip6_linklocal_address(struct netif *netif, u8_t from_mac_48bit) |
||
1358 | { |
||
1359 | u8_t i, addr_index; |
||
1360 | |||
1361 | /* Link-local prefix. */ |
||
1362 | ip_2_ip6(&netif->ip6_addr[0])->addr[0] = PP_HTONL(0xfe800000ul); |
||
1363 | ip_2_ip6(&netif->ip6_addr[0])->addr[1] = 0; |
||
1364 | |||
1365 | /* Generate interface ID. */ |
||
1366 | if (from_mac_48bit) { |
||
1367 | /* Assume hwaddr is a 48-bit IEEE 802 MAC. Convert to EUI-64 address. Complement Group bit. */ |
||
1368 | ip_2_ip6(&netif->ip6_addr[0])->addr[2] = lwip_htonl((((u32_t)(netif->hwaddr[0] ^ 0x02)) << 24) | |
||
1369 | ((u32_t)(netif->hwaddr[1]) << 16) | |
||
1370 | ((u32_t)(netif->hwaddr[2]) << 8) | |
||
1371 | (0xff)); |
||
1372 | ip_2_ip6(&netif->ip6_addr[0])->addr[3] = lwip_htonl((u32_t)(0xfeul << 24) | |
||
1373 | ((u32_t)(netif->hwaddr[3]) << 16) | |
||
1374 | ((u32_t)(netif->hwaddr[4]) << 8) | |
||
1375 | (netif->hwaddr[5])); |
||
1376 | } else { |
||
1377 | /* Use hwaddr directly as interface ID. */ |
||
1378 | ip_2_ip6(&netif->ip6_addr[0])->addr[2] = 0; |
||
1379 | ip_2_ip6(&netif->ip6_addr[0])->addr[3] = 0; |
||
1380 | |||
1381 | addr_index = 3; |
||
1382 | for (i = 0; (i < 8) && (i < netif->hwaddr_len); i++) { |
||
1383 | if (i == 4) { |
||
1384 | addr_index--; |
||
1385 | } |
||
1386 | ip_2_ip6(&netif->ip6_addr[0])->addr[addr_index] |= ((u32_t)(netif->hwaddr[netif->hwaddr_len - i - 1])) << (8 * (i & 0x03)); |
||
1387 | } |
||
1388 | } |
||
1389 | |||
1390 | /* Set a link-local zone. Even though the zone is implied by the owning |
||
1391 | * netif, setting the zone anyway has two important conceptual advantages: |
||
1392 | * 1) it avoids the need for a ton of exceptions in internal code, allowing |
||
1393 | * e.g. ip6_addr_cmp() to be used on local addresses; |
||
1394 | * 2) the properly zoned address is visible externally, e.g. when any outside |
||
1395 | * code enumerates available addresses or uses one to bind a socket. |
||
1396 | * Any external code unaware of address scoping is likely to just ignore the |
||
1397 | * zone field, so this should not create any compatibility problems. */ |
||
1398 | ip6_addr_assign_zone(ip_2_ip6(&netif->ip6_addr[0]), IP6_UNICAST, netif); |
||
1399 | |||
1400 | /* Set address state. */ |
||
1401 | #if LWIP_IPV6_DUP_DETECT_ATTEMPTS |
||
1402 | /* Will perform duplicate address detection (DAD). */ |
||
1403 | netif_ip6_addr_set_state(netif, 0, IP6_ADDR_TENTATIVE); |
||
1404 | #else |
||
1405 | /* Consider address valid. */ |
||
1406 | netif_ip6_addr_set_state(netif, 0, IP6_ADDR_PREFERRED); |
||
1407 | #endif /* LWIP_IPV6_AUTOCONFIG */ |
||
1408 | } |
||
1409 | |||
1410 | /** |
||
1411 | * @ingroup netif_ip6 |
||
1412 | * This function allows for the easy addition of a new IPv6 address to an interface. |
||
1413 | * It takes care of finding an empty slot and then sets the address tentative |
||
1414 | * (to make sure that all the subsequent processing happens). |
||
1415 | * |
||
1416 | * @param netif netif to add the address on |
||
1417 | * @param ip6addr address to add |
||
1418 | * @param chosen_idx if != NULL, the chosen IPv6 address index will be stored here |
||
1419 | */ |
||
1420 | err_t |
||
1421 | netif_add_ip6_address(struct netif *netif, const ip6_addr_t *ip6addr, s8_t *chosen_idx) |
||
1422 | { |
||
1423 | s8_t i; |
||
1424 | |||
1425 | i = netif_get_ip6_addr_match(netif, ip6addr); |
||
1426 | if (i >= 0) { |
||
1427 | /* Address already added */ |
||
1428 | if (chosen_idx != NULL) { |
||
1429 | *chosen_idx = i; |
||
1430 | } |
||
1431 | return ERR_OK; |
||
1432 | } |
||
1433 | |||
1434 | /* Find a free slot. The first one is reserved for link-local addresses. */ |
||
1435 | for (i = ip6_addr_islinklocal(ip6addr) ? 0 : 1; i < LWIP_IPV6_NUM_ADDRESSES; i++) { |
||
1436 | if (ip6_addr_isinvalid(netif_ip6_addr_state(netif, i))) { |
||
1437 | ip_addr_copy_from_ip6(netif->ip6_addr[i], *ip6addr); |
||
1438 | ip6_addr_assign_zone(ip_2_ip6(&netif->ip6_addr[i]), IP6_UNICAST, netif); |
||
1439 | netif_ip6_addr_set_state(netif, i, IP6_ADDR_TENTATIVE); |
||
1440 | if (chosen_idx != NULL) { |
||
1441 | *chosen_idx = i; |
||
1442 | } |
||
1443 | return ERR_OK; |
||
1444 | } |
||
1445 | } |
||
1446 | |||
1447 | if (chosen_idx != NULL) { |
||
1448 | *chosen_idx = -1; |
||
1449 | } |
||
1450 | return ERR_VAL; |
||
1451 | } |
||
1452 | |||
1453 | /** Dummy IPv6 output function for netifs not supporting IPv6 |
||
1454 | */ |
||
1455 | static err_t |
||
1456 | netif_null_output_ip6(struct netif *netif, struct pbuf *p, const ip6_addr_t *ipaddr) |
||
1457 | { |
||
1458 | LWIP_UNUSED_ARG(netif); |
||
1459 | LWIP_UNUSED_ARG(p); |
||
1460 | LWIP_UNUSED_ARG(ipaddr); |
||
1461 | |||
1462 | return ERR_IF; |
||
1463 | } |
||
1464 | #endif /* LWIP_IPV6 */ |
||
1465 | |||
1466 | /** |
||
1467 | * @ingroup netif |
||
1468 | * Return the interface index for the netif with name |
||
1469 | * or NETIF_NO_INDEX if not found/on error |
||
1470 | * |
||
1471 | * @param name the name of the netif |
||
1472 | */ |
||
1473 | u8_t |
||
1474 | netif_name_to_index(const char *name) |
||
1475 | { |
||
1476 | struct netif *netif = netif_find(name); |
||
1477 | if (netif != NULL) { |
||
1478 | return netif_get_index(netif); |
||
1479 | } |
||
1480 | /* No name found, return invalid index */ |
||
1481 | return NETIF_NO_INDEX; |
||
1482 | } |
||
1483 | |||
1484 | /** |
||
1485 | * @ingroup netif |
||
1486 | * Return the interface name for the netif matching index |
||
1487 | * or NULL if not found/on error |
||
1488 | * |
||
1489 | * @param idx the interface index of the netif |
||
1490 | * @param name char buffer of at least NETIF_NAMESIZE bytes |
||
1491 | */ |
||
1492 | char * |
||
1493 | netif_index_to_name(u8_t idx, char *name) |
||
1494 | { |
||
1495 | struct netif *netif = netif_get_by_index(idx); |
||
1496 | |||
1497 | if (netif != NULL) { |
||
1498 | name[0] = netif->name[0]; |
||
1499 | name[1] = netif->name[1]; |
||
1500 | lwip_itoa(&name[2], NETIF_NAMESIZE - 2, netif_index_to_num(idx)); |
||
1501 | return name; |
||
1502 | } |
||
1503 | return NULL; |
||
1504 | } |
||
1505 | |||
1506 | /** |
||
1507 | * @ingroup netif |
||
1508 | * Return the interface for the netif index |
||
1509 | * |
||
1510 | * @param idx index of netif to find |
||
1511 | */ |
||
1512 | struct netif * |
||
1513 | netif_get_by_index(u8_t idx) |
||
1514 | { |
||
1515 | struct netif *netif; |
||
1516 | |||
1517 | if (idx != NETIF_NO_INDEX) { |
||
1518 | NETIF_FOREACH(netif) { |
||
1519 | if (idx == netif_get_index(netif)) { |
||
1520 | return netif; /* found! */ |
||
1521 | } |
||
1522 | } |
||
1523 | } |
||
1524 | |||
1525 | return NULL; |
||
1526 | } |
||
1527 | |||
1528 | /** |
||
1529 | * @ingroup netif |
||
1530 | * Find a network interface by searching for its name |
||
1531 | * |
||
1532 | * @param name the name of the netif (like netif->name) plus concatenated number |
||
1533 | * in ascii representation (e.g. 'en0') |
||
1534 | */ |
||
1535 | struct netif * |
||
1536 | netif_find(const char *name) |
||
1537 | { |
||
1538 | struct netif *netif; |
||
1539 | u8_t num; |
||
1540 | |||
1541 | if (name == NULL) { |
||
1542 | return NULL; |
||
1543 | } |
||
1544 | |||
1545 | num = (u8_t)atoi(&name[2]); |
||
1546 | |||
1547 | NETIF_FOREACH(netif) { |
||
1548 | if (num == netif->num && |
||
1549 | name[0] == netif->name[0] && |
||
1550 | name[1] == netif->name[1]) { |
||
1551 | LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: found %c%c\n", name[0], name[1])); |
||
1552 | return netif; |
||
1553 | } |
||
1554 | } |
||
1555 | LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: didn't find %c%c\n", name[0], name[1])); |
||
1556 | return NULL; |
||
1557 | } |
||
1558 | |||
1559 | #if LWIP_NETIF_EXT_STATUS_CALLBACK |
||
1560 | /** |
||
1561 | * @ingroup netif |
||
1562 | * Add extended netif events listener |
||
1563 | * @param callback pointer to listener structure |
||
1564 | * @param fn callback function |
||
1565 | */ |
||
1566 | void netif_add_ext_callback(netif_ext_callback_t *callback, netif_ext_callback_fn fn) |
||
1567 | { |
||
1568 | LWIP_ASSERT("callback must be != NULL", callback != NULL); |
||
1569 | LWIP_ASSERT("fn must be != NULL", fn != NULL); |
||
1570 | |||
1571 | callback->callback_fn = fn; |
||
1572 | callback->next = ext_callback; |
||
1573 | ext_callback = callback; |
||
1574 | } |
||
1575 | |||
1576 | /** |
||
1577 | * Invoke extended netif status event |
||
1578 | * @param netif netif that is affected by change |
||
1579 | * @param reason change reason |
||
1580 | * @param args depends on reason, see reason description |
||
1581 | */ |
||
1582 | void netif_invoke_ext_callback(struct netif *netif, netif_nsc_reason_t reason, const netif_ext_callback_args_t *args) |
||
1583 | { |
||
1584 | netif_ext_callback_t *callback = ext_callback; |
||
1585 | |||
1586 | LWIP_ASSERT("netif must be != NULL", netif != NULL); |
||
1587 | |||
1588 | while (callback != NULL) { |
||
1589 | callback->callback_fn(netif, reason, args); |
||
1590 | callback = callback->next; |
||
1591 | } |
||
1592 | } |
||
1593 | #endif /* LWIP_NETIF_EXT_STATUS_CALLBACK */ |