1 /** 2 * @file 3 * Modules initialization 4 * 5 */ 6 7 /* 8 * Copyright (c) 2001-2004 Swedish Institute of Computer Science. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without modification, 12 * are permitted provided that the following conditions are met: 13 * 14 * 1. Redistributions of source code must retain the above copyright notice, 15 * this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright notice, 17 * this list of conditions and the following disclaimer in the documentation 18 * and/or other materials provided with the distribution. 19 * 3. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 31 * OF SUCH DAMAGE. 32 * 33 * This file is part of the lwIP TCP/IP stack. 34 * 35 * Author: Adam Dunkels <adam@sics.se> 36 */ 37 38 #include "lwip/opt.h" 39 40 #include "lwip/init.h" 41 #include "lwip/stats.h" 42 #include "lwip/sys.h" 43 #include "lwip/mem.h" 44 #include "lwip/memp.h" 45 #include "lwip/pbuf.h" 46 #include "lwip/netif.h" 47 #include "lwip/sockets.h" 48 #include "lwip/ip.h" 49 #include "lwip/raw.h" 50 #include "lwip/udp.h" 51 #include "lwip/priv/tcp_priv.h" 52 #include "lwip/igmp.h" 53 #include "lwip/dns.h" 54 #include "lwip/timeouts.h" 55 #include "lwip/etharp.h" 56 #include "lwip/ip6.h" 57 #include "lwip/nd6.h" 58 #include "lwip/mld6.h" 59 #include "lwip/api.h" 60 61 #include "netif/ppp/ppp_opts.h" 62 #include "netif/ppp/ppp_impl.h" 63 64 #ifndef LWIP_SKIP_PACKING_CHECK 65 66 #ifdef PACK_STRUCT_USE_INCLUDES 67 # include "arch/bpstruct.h" 68 #endif 69 PACK_STRUCT_BEGIN 70 struct packed_struct_test 71 { 72 PACK_STRUCT_FLD_8(u8_t dummy1); 73 PACK_STRUCT_FIELD(u32_t dummy2); 74 } PACK_STRUCT_STRUCT; 75 PACK_STRUCT_END 76 #ifdef PACK_STRUCT_USE_INCLUDES 77 # include "arch/epstruct.h" 78 #endif 79 #define PACKED_STRUCT_TEST_EXPECTED_SIZE 5 80 81 #endif 82 83 /* Compile-time sanity checks for configuration errors. 84 * These can be done independently of LWIP_DEBUG, without penalty. 85 */ 86 #ifndef BYTE_ORDER 87 #error "BYTE_ORDER is not defined, you have to define it in your cc.h" 88 #endif 89 #if (!IP_SOF_BROADCAST && IP_SOF_BROADCAST_RECV) 90 #error "If you want to use broadcast filter per pcb on recv operations, you have to define IP_SOF_BROADCAST=1 in your lwipopts.h" 91 #endif 92 #if (!LWIP_UDP && LWIP_UDPLITE) 93 #error "If you want to use UDP Lite, you have to define LWIP_UDP=1 in your lwipopts.h" 94 #endif 95 #if (!LWIP_UDP && LWIP_DHCP) 96 #error "If you want to use DHCP, you have to define LWIP_UDP=1 in your lwipopts.h" 97 #endif 98 #if (!LWIP_UDP && !LWIP_RAW && LWIP_MULTICAST_TX_OPTIONS) 99 #error "If you want to use LWIP_MULTICAST_TX_OPTIONS, you have to define LWIP_UDP=1 and/or LWIP_RAW=1 in your lwipopts.h" 100 #endif 101 #if (!LWIP_UDP && LWIP_DNS) 102 #error "If you want to use DNS, you have to define LWIP_UDP=1 in your lwipopts.h" 103 #endif 104 #if !MEMP_MEM_MALLOC /* MEMP_NUM_* checks are disabled when not using the pool allocator */ 105 #if (LWIP_ARP && ARP_QUEUEING && (MEMP_NUM_ARP_QUEUE<=0)) 106 #error "If you want to use ARP Queueing, you have to define MEMP_NUM_ARP_QUEUE>=1 in your lwipopts.h" 107 #endif 108 #if (LWIP_RAW && (MEMP_NUM_RAW_PCB<=0)) 109 #error "If you want to use RAW, you have to define MEMP_NUM_RAW_PCB>=1 in your lwipopts.h" 110 #endif 111 #if (LWIP_UDP && (MEMP_NUM_UDP_PCB<=0)) 112 #error "If you want to use UDP, you have to define MEMP_NUM_UDP_PCB>=1 in your lwipopts.h" 113 #endif 114 #if (LWIP_TCP && (MEMP_NUM_TCP_PCB<=0)) 115 #error "If you want to use TCP, you have to define MEMP_NUM_TCP_PCB>=1 in your lwipopts.h" 116 #endif 117 #if (LWIP_IGMP && (MEMP_NUM_IGMP_GROUP<=1)) 118 #error "If you want to use IGMP, you have to define MEMP_NUM_IGMP_GROUP>1 in your lwipopts.h" 119 #endif 120 #if (LWIP_IGMP && !LWIP_MULTICAST_TX_OPTIONS) 121 #error "If you want to use IGMP, you have to define LWIP_MULTICAST_TX_OPTIONS==1 in your lwipopts.h" 122 #endif 123 #if (LWIP_IGMP && !LWIP_IPV4) 124 #error "IGMP needs LWIP_IPV4 enabled in your lwipopts.h" 125 #endif 126 #if ((LWIP_NETCONN || LWIP_SOCKET) && (MEMP_NUM_TCPIP_MSG_API<=0)) 127 #error "If you want to use Sequential API, you have to define MEMP_NUM_TCPIP_MSG_API>=1 in your lwipopts.h" 128 #endif 129 /* There must be sufficient timeouts, taking into account requirements of the subsystems. */ 130 #if LWIP_TIMERS && (MEMP_NUM_SYS_TIMEOUT < (LWIP_TCP + IP_REASSEMBLY + LWIP_ARP + (2*LWIP_DHCP) + LWIP_AUTOIP + LWIP_IGMP + LWIP_DNS + PPP_SUPPORT + (LWIP_IPV6 ? (1 + LWIP_IPV6_REASS + LWIP_IPV6_MLD) : 0))) 131 #error "MEMP_NUM_SYS_TIMEOUT is too low to accomodate all required timeouts" 132 #endif 133 #if (IP_REASSEMBLY && (MEMP_NUM_REASSDATA > IP_REASS_MAX_PBUFS)) 134 #error "MEMP_NUM_REASSDATA > IP_REASS_MAX_PBUFS doesn't make sense since each struct ip_reassdata must hold 2 pbufs at least!" 135 #endif 136 #endif /* !MEMP_MEM_MALLOC */ 137 #if LWIP_WND_SCALE 138 #if (LWIP_TCP && (TCP_WND > 0xffffffff)) 139 #error "If you want to use TCP, TCP_WND must fit in an u32_t, so, you have to reduce it in your lwipopts.h" 140 #endif 141 #if (LWIP_TCP && (TCP_RCV_SCALE > 14)) 142 #error "The maximum valid window scale value is 14!" 143 #endif 144 #if (LWIP_TCP && (TCP_WND > (0xFFFFU << TCP_RCV_SCALE))) 145 #error "TCP_WND is bigger than the configured LWIP_WND_SCALE allows!" 146 #endif 147 #if (LWIP_TCP && ((TCP_WND >> TCP_RCV_SCALE) == 0)) 148 #error "TCP_WND is too small for the configured LWIP_WND_SCALE (results in zero window)!" 149 #endif 150 #else /* LWIP_WND_SCALE */ 151 #if (LWIP_TCP && (TCP_WND > 0xffff)) 152 #error "If you want to use TCP, TCP_WND must fit in an u16_t, so, you have to reduce it in your lwipopts.h (or enable window scaling)" 153 #endif 154 #endif /* LWIP_WND_SCALE */ 155 #if (LWIP_TCP && (TCP_SND_QUEUELEN > 0xffff)) 156 #error "If you want to use TCP, TCP_SND_QUEUELEN must fit in an u16_t, so, you have to reduce it in your lwipopts.h" 157 #endif 158 #if (LWIP_TCP && (TCP_SND_QUEUELEN < 2)) 159 #error "TCP_SND_QUEUELEN must be at least 2 for no-copy TCP writes to work" 160 #endif 161 #if (LWIP_TCP && ((TCP_MAXRTX > 12) || (TCP_SYNMAXRTX > 12))) 162 #error "If you want to use TCP, TCP_MAXRTX and TCP_SYNMAXRTX must less or equal to 12 (due to tcp_backoff table), so, you have to reduce them in your lwipopts.h" 163 #endif 164 #if (LWIP_TCP && TCP_LISTEN_BACKLOG && ((TCP_DEFAULT_LISTEN_BACKLOG < 0) || (TCP_DEFAULT_LISTEN_BACKLOG > 0xff))) 165 #error "If you want to use TCP backlog, TCP_DEFAULT_LISTEN_BACKLOG must fit into an u8_t" 166 #endif 167 #if (LWIP_NETIF_API && (NO_SYS==1)) 168 #error "If you want to use NETIF API, you have to define NO_SYS=0 in your lwipopts.h" 169 #endif 170 #if ((LWIP_SOCKET || LWIP_NETCONN) && (NO_SYS==1)) 171 #error "If you want to use Sequential API, you have to define NO_SYS=0 in your lwipopts.h" 172 #endif 173 #if (LWIP_PPP_API && (NO_SYS==1)) 174 #error "If you want to use PPP API, you have to define NO_SYS=0 in your lwipopts.h" 175 #endif 176 #if (LWIP_PPP_API && (PPP_SUPPORT==0)) 177 #error "If you want to use PPP API, you have to enable PPP_SUPPORT in your lwipopts.h" 178 #endif 179 #if (((!LWIP_DHCP) || (!LWIP_AUTOIP)) && LWIP_DHCP_AUTOIP_COOP) 180 #error "If you want to use DHCP/AUTOIP cooperation mode, you have to define LWIP_DHCP=1 and LWIP_AUTOIP=1 in your lwipopts.h" 181 #endif 182 #if (((!LWIP_DHCP) || (!LWIP_ARP)) && DHCP_DOES_ARP_CHECK) 183 #error "If you want to use DHCP ARP checking, you have to define LWIP_DHCP=1 and LWIP_ARP=1 in your lwipopts.h" 184 #endif 185 #if (!LWIP_ARP && LWIP_AUTOIP) 186 #error "If you want to use AUTOIP, you have to define LWIP_ARP=1 in your lwipopts.h" 187 #endif 188 #if (LWIP_TCP && ((LWIP_EVENT_API && LWIP_CALLBACK_API) || (!LWIP_EVENT_API && !LWIP_CALLBACK_API))) 189 #error "One and exactly one of LWIP_EVENT_API and LWIP_CALLBACK_API has to be enabled in your lwipopts.h" 190 #endif 191 #if (MEM_LIBC_MALLOC && MEM_USE_POOLS) 192 #error "MEM_LIBC_MALLOC and MEM_USE_POOLS may not both be simultaneously enabled in your lwipopts.h" 193 #endif 194 #if (MEM_USE_POOLS && !MEMP_USE_CUSTOM_POOLS) 195 #error "MEM_USE_POOLS requires custom pools (MEMP_USE_CUSTOM_POOLS) to be enabled in your lwipopts.h" 196 #endif 197 #if (PBUF_POOL_BUFSIZE <= MEM_ALIGNMENT) 198 #error "PBUF_POOL_BUFSIZE must be greater than MEM_ALIGNMENT or the offset may take the full first pbuf" 199 #endif 200 #if (DNS_LOCAL_HOSTLIST && !DNS_LOCAL_HOSTLIST_IS_DYNAMIC && !(defined(DNS_LOCAL_HOSTLIST_INIT))) 201 #error "you have to define define DNS_LOCAL_HOSTLIST_INIT {{'host1', 0x123}, {'host2', 0x234}} to initialize DNS_LOCAL_HOSTLIST" 202 #endif 203 #if PPP_SUPPORT && !PPPOS_SUPPORT && !PPPOE_SUPPORT && !PPPOL2TP_SUPPORT 204 #error "PPP_SUPPORT needs at least one of PPPOS_SUPPORT, PPPOE_SUPPORT or PPPOL2TP_SUPPORT turned on" 205 #endif 206 #if PPP_SUPPORT && !PPP_IPV4_SUPPORT && !PPP_IPV6_SUPPORT 207 #error "PPP_SUPPORT needs PPP_IPV4_SUPPORT and/or PPP_IPV6_SUPPORT turned on" 208 #endif 209 #if PPP_SUPPORT && PPP_IPV4_SUPPORT && !LWIP_IPV4 210 #error "PPP_IPV4_SUPPORT needs LWIP_IPV4 turned on" 211 #endif 212 #if PPP_SUPPORT && PPP_IPV6_SUPPORT && !LWIP_IPV6 213 #error "PPP_IPV6_SUPPORT needs LWIP_IPV6 turned on" 214 #endif 215 #if !LWIP_ETHERNET && (LWIP_ARP || PPPOE_SUPPORT) 216 #error "LWIP_ETHERNET needs to be turned on for LWIP_ARP or PPPOE_SUPPORT" 217 #endif 218 #if LWIP_TCPIP_CORE_LOCKING_INPUT && !LWIP_TCPIP_CORE_LOCKING 219 #error "When using LWIP_TCPIP_CORE_LOCKING_INPUT, LWIP_TCPIP_CORE_LOCKING must be enabled, too" 220 #endif 221 #if LWIP_TCP && LWIP_NETIF_TX_SINGLE_PBUF && !TCP_OVERSIZE 222 #error "LWIP_NETIF_TX_SINGLE_PBUF needs TCP_OVERSIZE enabled to create single-pbuf TCP packets" 223 #endif 224 #if LWIP_NETCONN && LWIP_TCP 225 #if NETCONN_COPY != TCP_WRITE_FLAG_COPY 226 #error "NETCONN_COPY != TCP_WRITE_FLAG_COPY" 227 #endif 228 #if NETCONN_MORE != TCP_WRITE_FLAG_MORE 229 #error "NETCONN_MORE != TCP_WRITE_FLAG_MORE" 230 #endif 231 #endif /* LWIP_NETCONN && LWIP_TCP */ 232 #if LWIP_SOCKET 233 /* Check that the SO_* socket options and SOF_* lwIP-internal flags match */ 234 #if SO_REUSEADDR != SOF_REUSEADDR 235 #error "WARNING: SO_REUSEADDR != SOF_REUSEADDR" 236 #endif 237 #if SO_KEEPALIVE != SOF_KEEPALIVE 238 #error "WARNING: SO_KEEPALIVE != SOF_KEEPALIVE" 239 #endif 240 #if SO_BROADCAST != SOF_BROADCAST 241 #error "WARNING: SO_BROADCAST != SOF_BROADCAST" 242 #endif 243 #endif /* LWIP_SOCKET */ 244 245 246 /* Compile-time checks for deprecated options. 247 */ 248 #ifdef MEMP_NUM_TCPIP_MSG 249 #error "MEMP_NUM_TCPIP_MSG option is deprecated. Remove it from your lwipopts.h." 250 #endif 251 #ifdef TCP_REXMIT_DEBUG 252 #error "TCP_REXMIT_DEBUG option is deprecated. Remove it from your lwipopts.h." 253 #endif 254 #ifdef RAW_STATS 255 #error "RAW_STATS option is deprecated. Remove it from your lwipopts.h." 256 #endif 257 #ifdef ETHARP_QUEUE_FIRST 258 #error "ETHARP_QUEUE_FIRST option is deprecated. Remove it from your lwipopts.h." 259 #endif 260 #ifdef ETHARP_ALWAYS_INSERT 261 #error "ETHARP_ALWAYS_INSERT option is deprecated. Remove it from your lwipopts.h." 262 #endif 263 #if !NO_SYS && LWIP_TCPIP_CORE_LOCKING && LWIP_COMPAT_MUTEX && !defined(LWIP_COMPAT_MUTEX_ALLOWED) 264 #error "LWIP_COMPAT_MUTEX cannot prevent priority inversion. It is recommended to implement priority-aware mutexes. (Define LWIP_COMPAT_MUTEX_ALLOWED to disable this error.)" 265 #endif 266 267 #ifndef LWIP_DISABLE_TCP_SANITY_CHECKS 268 #define LWIP_DISABLE_TCP_SANITY_CHECKS 0 269 #endif 270 #ifndef LWIP_DISABLE_MEMP_SANITY_CHECKS 271 #define LWIP_DISABLE_MEMP_SANITY_CHECKS 0 272 #endif 273 274 /* MEMP sanity checks */ 275 #if MEMP_MEM_MALLOC 276 #if !LWIP_DISABLE_MEMP_SANITY_CHECKS 277 #if LWIP_NETCONN || LWIP_SOCKET 278 #if !MEMP_NUM_NETCONN && LWIP_SOCKET 279 #error "lwip_sanity_check: WARNING: MEMP_NUM_NETCONN cannot be 0 when using sockets!" 280 #endif 281 #else /* MEMP_MEM_MALLOC */ 282 #if MEMP_NUM_NETCONN > (MEMP_NUM_TCP_PCB+MEMP_NUM_TCP_PCB_LISTEN+MEMP_NUM_UDP_PCB+MEMP_NUM_RAW_PCB) 283 #error "lwip_sanity_check: WARNING: MEMP_NUM_NETCONN should be less than the sum of MEMP_NUM_{TCP,RAW,UDP}_PCB+MEMP_NUM_TCP_PCB_LISTEN. If you know what you are doing, define LWIP_DISABLE_MEMP_SANITY_CHECKS to 1 to disable this error." 284 #endif 285 #endif /* LWIP_NETCONN || LWIP_SOCKET */ 286 #endif /* !LWIP_DISABLE_MEMP_SANITY_CHECKS */ 287 #if MEM_USE_POOLS 288 #error "MEMP_MEM_MALLOC and MEM_USE_POOLS cannot be enabled at the same time" 289 #endif 290 #ifdef LWIP_HOOK_MEMP_AVAILABLE 291 #error "LWIP_HOOK_MEMP_AVAILABLE doesn't make sense with MEMP_MEM_MALLOC" 292 #endif 293 #endif /* MEMP_MEM_MALLOC */ 294 295 /* TCP sanity checks */ 296 #if !LWIP_DISABLE_TCP_SANITY_CHECKS 297 #if LWIP_TCP 298 #if !MEMP_MEM_MALLOC && (MEMP_NUM_TCP_SEG < TCP_SND_QUEUELEN) 299 #error "lwip_sanity_check: WARNING: MEMP_NUM_TCP_SEG should be at least as big as TCP_SND_QUEUELEN. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error." 300 #endif 301 #if TCP_SND_BUF < (2 * TCP_MSS) 302 #error "lwip_sanity_check: WARNING: TCP_SND_BUF must be at least as much as (2 * TCP_MSS) for things to work smoothly. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error." 303 #endif 304 #if TCP_SND_QUEUELEN < (2 * (TCP_SND_BUF / TCP_MSS)) 305 #error "lwip_sanity_check: WARNING: TCP_SND_QUEUELEN must be at least as much as (2 * TCP_SND_BUF/TCP_MSS) for things to work. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error." 306 #endif 307 #if TCP_SNDLOWAT >= TCP_SND_BUF 308 #error "lwip_sanity_check: WARNING: TCP_SNDLOWAT must be less than TCP_SND_BUF. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error." 309 #endif 310 #if TCP_SNDLOWAT >= (0xFFFF - (4 * TCP_MSS)) 311 #error "lwip_sanity_check: WARNING: TCP_SNDLOWAT must at least be 4*MSS below u16_t overflow!" 312 #endif 313 #if TCP_SNDQUEUELOWAT >= TCP_SND_QUEUELEN 314 #error "lwip_sanity_check: WARNING: TCP_SNDQUEUELOWAT must be less than TCP_SND_QUEUELEN. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error." 315 #endif 316 #if !MEMP_MEM_MALLOC && PBUF_POOL_SIZE && (PBUF_POOL_BUFSIZE <= (PBUF_LINK_ENCAPSULATION_HLEN + PBUF_LINK_HLEN + PBUF_IP_HLEN + PBUF_TRANSPORT_HLEN)) 317 #error "lwip_sanity_check: WARNING: PBUF_POOL_BUFSIZE does not provide enough space for protocol headers. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error." 318 #endif 319 #if !MEMP_MEM_MALLOC && PBUF_POOL_SIZE && (TCP_WND > (PBUF_POOL_SIZE * (PBUF_POOL_BUFSIZE - (PBUF_LINK_ENCAPSULATION_HLEN + PBUF_LINK_HLEN + PBUF_IP_HLEN + PBUF_TRANSPORT_HLEN)))) 320 #error "lwip_sanity_check: WARNING: TCP_WND is larger than space provided by PBUF_POOL_SIZE * (PBUF_POOL_BUFSIZE - protocol headers). If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error." 321 #endif 322 #if TCP_WND < TCP_MSS 323 #error "lwip_sanity_check: WARNING: TCP_WND is smaller than MSS. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error." 324 #endif 325 #endif /* LWIP_TCP */ 326 #endif /* !LWIP_DISABLE_TCP_SANITY_CHECKS */ 327 328 /** 329 * @ingroup lwip_nosys 330 * Initialize all modules. 331 * Use this in NO_SYS mode. Use tcpip_init() otherwise. 332 */ 333 void 334 lwip_init(void) 335 { 336 #ifndef LWIP_SKIP_CONST_CHECK 337 int a; 338 LWIP_UNUSED_ARG(a); 339 LWIP_ASSERT("LWIP_CONST_CAST not implemented correctly. Check your lwIP port.", LWIP_CONST_CAST(void*, &a) == &a); 340 #endif 341 #ifndef LWIP_SKIP_PACKING_CHECK 342 LWIP_ASSERT("Struct packing not implemented correctly. Check your lwIP port.", sizeof(struct packed_struct_test) == PACKED_STRUCT_TEST_EXPECTED_SIZE); 343 #endif 344 345 /* Modules initialization */ 346 stats_init(); 347 #if !NO_SYS 348 sys_init(); 349 #endif /* !NO_SYS */ 350 mem_init(); 351 memp_init(); 352 pbuf_init(); 353 netif_init(); 354 #if LWIP_IPV4 355 ip_init(); 356 #if LWIP_ARP 357 etharp_init(); 358 #endif /* LWIP_ARP */ 359 #endif /* LWIP_IPV4 */ 360 #if LWIP_RAW 361 raw_init(); 362 #endif /* LWIP_RAW */ 363 #if LWIP_UDP 364 udp_init(); 365 #endif /* LWIP_UDP */ 366 #if LWIP_TCP 367 tcp_init(); 368 #endif /* LWIP_TCP */ 369 #if LWIP_IGMP 370 igmp_init(); 371 #endif /* LWIP_IGMP */ 372 #if LWIP_DNS 373 dns_init(); 374 #endif /* LWIP_DNS */ 375 #if PPP_SUPPORT 376 ppp_init(); 377 #endif 378 379 #if LWIP_TIMERS 380 sys_timeouts_init(); 381 #endif /* LWIP_TIMERS */ 382 } 383