lwip_init.c

00001 /**
00002  * @file
00003  * Modules initialization
00004  *
00005  */
00006 
00007 /*
00008  * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
00009  * All rights reserved.
00010  *
00011  * Redistribution and use in source and binary forms, with or without modification,
00012  * are permitted provided that the following conditions are met:
00013  *
00014  * 1. Redistributions of source code must retain the above copyright notice,
00015  *    this list of conditions and the following disclaimer.
00016  * 2. Redistributions in binary form must reproduce the above copyright notice,
00017  *    this list of conditions and the following disclaimer in the documentation
00018  *    and/or other materials provided with the distribution.
00019  * 3. The name of the author may not be used to endorse or promote products
00020  *    derived from this software without specific prior written permission.
00021  *
00022  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
00023  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
00024  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
00025  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00026  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
00027  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00028  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00029  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
00030  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
00031  * OF SUCH DAMAGE.
00032  *
00033  * This file is part of the lwIP TCP/IP stack.
00034  *
00035  * Author: Adam Dunkels <adam@sics.se>
00036  */
00037 
00038 /**
00039  * @defgroup lwip_nosys Mainloop mode ("NO_SYS")
00040  * @ingroup lwip
00041  * Use this mode if you do not run an OS on your system. \#define NO_SYS to 1.
00042  * Feed incoming packets to netif->input(pbuf, netif) function from mainloop,
00043  * *not* *from* *interrupt* *context*. You can allocate a @ref pbuf in interrupt
00044  * context and put them into a queue which is processed from mainloop.\n
00045  * Call sys_check_timeouts() periodically in the mainloop.\n
00046  * Porting: implement all functions in @ref sys_time and @ref sys_prot.\n
00047  * You can only use @ref callbackstyle_api in this mode.
00048  *
00049  * @defgroup lwip_os OS mode (TCPIP thread)
00050  * @ingroup lwip
00051  * Use this mode if you run an OS on your system. It is recommended to
00052  * use an RTOS that correctly handles priority inversion and
00053  * to use LWIP_TCPIP_CORE_LOCKING.\n
00054  * Porting: implement all functions in @ref sys_layer.\n
00055  * You can use @ref callbackstyle_api together with \#define tcpip_callback,
00056  * and all @ref threadsafe_api.
00057  */
00058 
00059 #include "lwip/opt.h"
00060 
00061 #include "lwip/init.h"
00062 #include "lwip/stats.h"
00063 #include "lwip/sys.h"
00064 #include "lwip/mem.h"
00065 #include "lwip/memp.h"
00066 #include "lwip/pbuf.h"
00067 #include "lwip/netif.h"
00068 #include "lwip/sockets.h"
00069 #include "lwip/ip.h"
00070 #include "lwip/raw.h"
00071 #include "lwip/udp.h"
00072 #include "lwip/priv/tcp_priv.h"
00073 #include "lwip/autoip.h"
00074 #include "lwip/igmp.h"
00075 #include "lwip/dns.h"
00076 #include "lwip/timeouts.h"
00077 #include "lwip/etharp.h"
00078 #include "lwip/ip6.h"
00079 #include "lwip/nd6.h"
00080 #include "lwip/mld6.h"
00081 #include "lwip/api.h"
00082 
00083 #include "netif/ppp/ppp_opts.h"
00084 #include "netif/ppp/ppp_impl.h"
00085 
00086 /* Compile-time sanity checks for configuration errors.
00087  * These can be done independently of LWIP_DEBUG, without penalty.
00088  */
00089 #ifndef BYTE_ORDER
00090   #error "BYTE_ORDER is not defined, you have to define it in your cc.h"
00091 #endif
00092 #if (!IP_SOF_BROADCAST && IP_SOF_BROADCAST_RECV)
00093   #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"
00094 #endif
00095 #if (!LWIP_UDP && LWIP_UDPLITE)
00096   #error "If you want to use UDP Lite, you have to define LWIP_UDP=1 in your lwipopts.h"
00097 #endif
00098 #if (!LWIP_UDP && LWIP_DHCP)
00099   #error "If you want to use DHCP, you have to define LWIP_UDP=1 in your lwipopts.h"
00100 #endif
00101 #if (!LWIP_UDP && LWIP_MULTICAST_TX_OPTIONS)
00102   #error "If you want to use IGMP/LWIP_MULTICAST_TX_OPTIONS, you have to define LWIP_UDP=1 in your lwipopts.h"
00103 #endif
00104 #if (!LWIP_UDP && LWIP_DNS)
00105   #error "If you want to use DNS, you have to define LWIP_UDP=1 in your lwipopts.h"
00106 #endif
00107 #if !MEMP_MEM_MALLOC /* MEMP_NUM_* checks are disabled when not using the pool allocator */
00108 #if (LWIP_ARP && ARP_QUEUEING && (MEMP_NUM_ARP_QUEUE<=0))
00109   #error "If you want to use ARP Queueing, you have to define MEMP_NUM_ARP_QUEUE>=1 in your lwipopts.h"
00110 #endif
00111 #if (LWIP_RAW && (MEMP_NUM_RAW_PCB<=0))
00112   #error "If you want to use RAW, you have to define MEMP_NUM_RAW_PCB>=1 in your lwipopts.h"
00113 #endif
00114 #if (LWIP_UDP && (MEMP_NUM_UDP_PCB<=0))
00115   #error "If you want to use UDP, you have to define MEMP_NUM_UDP_PCB>=1 in your lwipopts.h"
00116 #endif
00117 #if (LWIP_TCP && (MEMP_NUM_TCP_PCB<=0))
00118   #error "If you want to use TCP, you have to define MEMP_NUM_TCP_PCB>=1 in your lwipopts.h"
00119 #endif
00120 #if (LWIP_IGMP && (MEMP_NUM_IGMP_GROUP<=1))
00121   #error "If you want to use IGMP, you have to define MEMP_NUM_IGMP_GROUP>1 in your lwipopts.h"
00122 #endif
00123 #if (LWIP_IGMP && !LWIP_MULTICAST_TX_OPTIONS)
00124   #error "If you want to use IGMP, you have to define LWIP_MULTICAST_TX_OPTIONS==1 in your lwipopts.h"
00125 #endif
00126 #if (LWIP_IGMP && !LWIP_IPV4)
00127   #error "IGMP needs LWIP_IPV4 enabled in your lwipopts.h"
00128 #endif
00129 #if (LWIP_MULTICAST_TX_OPTIONS && !LWIP_IPV4)
00130   #error "LWIP_MULTICAST_TX_OPTIONS needs LWIP_IPV4 enabled in your lwipopts.h"
00131 #endif
00132 #if ((LWIP_NETCONN || LWIP_SOCKET) && (MEMP_NUM_TCPIP_MSG_API<=0))
00133   #error "If you want to use Sequential API, you have to define MEMP_NUM_TCPIP_MSG_API>=1 in your lwipopts.h"
00134 #endif
00135 /* There must be sufficient timeouts, taking into account requirements of the subsystems. */
00136 #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)))
00137   #error "MEMP_NUM_SYS_TIMEOUT is too low to accomodate all required timeouts"
00138 #endif
00139 #if (IP_REASSEMBLY && (MEMP_NUM_REASSDATA > IP_REASS_MAX_PBUFS))
00140   #error "MEMP_NUM_REASSDATA > IP_REASS_MAX_PBUFS doesn't make sense since each struct ip_reassdata must hold 2 pbufs at least!"
00141 #endif
00142 #endif /* !MEMP_MEM_MALLOC */
00143 #if LWIP_WND_SCALE
00144 #if (LWIP_TCP && (TCP_WND > 0xffffffff))
00145   #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"
00146 #endif
00147 #if (LWIP_TCP && LWIP_WND_SCALE && (TCP_RCV_SCALE > 14))
00148   #error "The maximum valid window scale value is 14!"
00149 #endif
00150 #if (LWIP_TCP && (TCP_WND > (0xFFFFU << TCP_RCV_SCALE)))
00151   #error "TCP_WND is bigger than the configured LWIP_WND_SCALE allows!"
00152 #endif
00153 #if (LWIP_TCP && ((TCP_WND >> TCP_RCV_SCALE) == 0))
00154   #error "TCP_WND is too small for the configured LWIP_WND_SCALE (results in zero window)!"
00155 #endif
00156 #else /* LWIP_WND_SCALE */
00157 #if (LWIP_TCP && (TCP_WND > 0xffff))
00158   #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)"
00159 #endif
00160 #endif /* LWIP_WND_SCALE */
00161 #if (LWIP_TCP && (TCP_SND_QUEUELEN > 0xffff))
00162   #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"
00163 #endif
00164 #if (LWIP_TCP && (TCP_SND_QUEUELEN < 2))
00165   #error "TCP_SND_QUEUELEN must be at least 2 for no-copy TCP writes to work"
00166 #endif
00167 #if (LWIP_TCP && ((TCP_MAXRTX > 12) || (TCP_SYNMAXRTX > 12)))
00168   #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"
00169 #endif
00170 #if (LWIP_TCP && TCP_LISTEN_BACKLOG && ((TCP_DEFAULT_LISTEN_BACKLOG < 0) || (TCP_DEFAULT_LISTEN_BACKLOG > 0xff)))
00171   #error "If you want to use TCP backlog, TCP_DEFAULT_LISTEN_BACKLOG must fit into an u8_t"
00172 #endif
00173 #if (LWIP_NETIF_API && (NO_SYS==1))
00174   #error "If you want to use NETIF API, you have to define NO_SYS=0 in your lwipopts.h"
00175 #endif
00176 #if ((LWIP_SOCKET || LWIP_NETCONN) && (NO_SYS==1))
00177   #error "If you want to use Sequential API, you have to define NO_SYS=0 in your lwipopts.h"
00178 #endif
00179 #if (LWIP_PPP_API && (NO_SYS==1))
00180   #error "If you want to use PPP API, you have to define NO_SYS=0 in your lwipopts.h"
00181 #endif
00182 #if (LWIP_PPP_API && (PPP_SUPPORT==0))
00183   #error "If you want to use PPP API, you have to enable PPP_SUPPORT in your lwipopts.h"
00184 #endif
00185 #if (((!LWIP_DHCP) || (!LWIP_AUTOIP)) && LWIP_DHCP_AUTOIP_COOP)
00186   #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"
00187 #endif
00188 #if (((!LWIP_DHCP) || (!LWIP_ARP)) && DHCP_DOES_ARP_CHECK)
00189   #error "If you want to use DHCP ARP checking, you have to define LWIP_DHCP=1 and LWIP_ARP=1 in your lwipopts.h"
00190 #endif
00191 #if (!LWIP_ARP && LWIP_AUTOIP)
00192   #error "If you want to use AUTOIP, you have to define LWIP_ARP=1 in your lwipopts.h"
00193 #endif
00194 #if (LWIP_TCP && ((LWIP_EVENT_API && LWIP_CALLBACK_API) || (!LWIP_EVENT_API && !LWIP_CALLBACK_API)))
00195   #error "One and exactly one of LWIP_EVENT_API and LWIP_CALLBACK_API has to be enabled in your lwipopts.h"
00196 #endif
00197 #if (MEM_LIBC_MALLOC && MEM_USE_POOLS)
00198   #error "MEM_LIBC_MALLOC and MEM_USE_POOLS may not both be simultaneously enabled in your lwipopts.h"
00199 #endif
00200 #if (MEM_USE_POOLS && !MEMP_USE_CUSTOM_POOLS)
00201   #error "MEM_USE_POOLS requires custom pools (MEMP_USE_CUSTOM_POOLS) to be enabled in your lwipopts.h"
00202 #endif
00203 #if (PBUF_POOL_BUFSIZE <= MEM_ALIGNMENT)
00204   #error "PBUF_POOL_BUFSIZE must be greater than MEM_ALIGNMENT or the offset may take the full first pbuf"
00205 #endif
00206 #if (DNS_LOCAL_HOSTLIST && !DNS_LOCAL_HOSTLIST_IS_DYNAMIC && !(defined(DNS_LOCAL_HOSTLIST_INIT)))
00207   #error "you have to define define DNS_LOCAL_HOSTLIST_INIT {{'host1', 0x123}, {'host2', 0x234}} to initialize DNS_LOCAL_HOSTLIST"
00208 #endif
00209 #if PPP_SUPPORT && !PPPOS_SUPPORT && !PPPOE_SUPPORT && !PPPOL2TP_SUPPORT
00210   #error "PPP_SUPPORT needs at least one of PPPOS_SUPPORT, PPPOE_SUPPORT or PPPOL2TP_SUPPORT turned on"
00211 #endif
00212 #if PPP_SUPPORT && !PPP_IPV4_SUPPORT && !PPP_IPV6_SUPPORT
00213   #error "PPP_SUPPORT needs PPP_IPV4_SUPPORT and/or PPP_IPV6_SUPPORT turned on"
00214 #endif
00215 #if PPP_SUPPORT && PPP_IPV4_SUPPORT && !LWIP_IPV4
00216   #error "PPP_IPV4_SUPPORT needs LWIP_IPV4 turned on"
00217 #endif
00218 #if PPP_SUPPORT && PPP_IPV6_SUPPORT && !LWIP_IPV6
00219   #error "PPP_IPV6_SUPPORT needs LWIP_IPV6 turned on"
00220 #endif
00221 #if !LWIP_ETHERNET && (LWIP_ARP || PPPOE_SUPPORT)
00222   #error "LWIP_ETHERNET needs to be turned on for LWIP_ARP or PPPOE_SUPPORT"
00223 #endif
00224 #if (LWIP_IGMP || LWIP_IPV6) && !defined(LWIP_RAND)
00225   #error "When using IGMP or IPv6, LWIP_RAND() needs to be defined to a random-function returning an u32_t random value"
00226 #endif
00227 #if LWIP_TCPIP_CORE_LOCKING_INPUT && !LWIP_TCPIP_CORE_LOCKING
00228   #error "When using LWIP_TCPIP_CORE_LOCKING_INPUT, LWIP_TCPIP_CORE_LOCKING must be enabled, too"
00229 #endif
00230 #if LWIP_TCP && LWIP_NETIF_TX_SINGLE_PBUF && !TCP_OVERSIZE
00231   #error "LWIP_NETIF_TX_SINGLE_PBUF needs TCP_OVERSIZE enabled to create single-pbuf TCP packets"
00232 #endif
00233 #if IP_FRAG && IP_FRAG_USES_STATIC_BUF && LWIP_NETIF_TX_SINGLE_PBUF
00234   #error "LWIP_NETIF_TX_SINGLE_PBUF does not work with IP_FRAG_USES_STATIC_BUF==1 as that creates pbuf queues"
00235 #endif
00236 #if LWIP_NETCONN && LWIP_TCP
00237 #if NETCONN_COPY != TCP_WRITE_FLAG_COPY
00238   #error "NETCONN_COPY != TCP_WRITE_FLAG_COPY"
00239 #endif
00240 #if NETCONN_MORE != TCP_WRITE_FLAG_MORE
00241   #error "NETCONN_MORE != TCP_WRITE_FLAG_MORE"
00242 #endif
00243 #endif /* LWIP_NETCONN && LWIP_TCP */
00244 #if LWIP_SOCKET
00245 /* Check that the SO_* socket options and SOF_* lwIP-internal flags match */
00246 #if SO_REUSEADDR != SOF_REUSEADDR
00247   #error "WARNING: SO_REUSEADDR != SOF_REUSEADDR"
00248 #endif
00249 #if SO_KEEPALIVE != SOF_KEEPALIVE
00250   #error "WARNING: SO_KEEPALIVE != SOF_KEEPALIVE"
00251 #endif
00252 #if SO_BROADCAST != SOF_BROADCAST
00253   #error "WARNING: SO_BROADCAST != SOF_BROADCAST"
00254 #endif
00255 #endif /* LWIP_SOCKET */
00256 
00257 
00258 /* Compile-time checks for deprecated options.
00259  */
00260 #ifdef MEMP_NUM_TCPIP_MSG
00261   #error "MEMP_NUM_TCPIP_MSG option is deprecated. Remove it from your lwipopts.h."
00262 #endif
00263 #ifdef TCP_REXMIT_DEBUG
00264   #error "TCP_REXMIT_DEBUG option is deprecated. Remove it from your lwipopts.h."
00265 #endif
00266 #ifdef RAW_STATS
00267   #error "RAW_STATS option is deprecated. Remove it from your lwipopts.h."
00268 #endif
00269 #ifdef ETHARP_QUEUE_FIRST
00270   #error "ETHARP_QUEUE_FIRST option is deprecated. Remove it from your lwipopts.h."
00271 #endif
00272 #ifdef ETHARP_ALWAYS_INSERT
00273   #error "ETHARP_ALWAYS_INSERT option is deprecated. Remove it from your lwipopts.h."
00274 #endif
00275 #if !NO_SYS && LWIP_TCPIP_CORE_LOCKING && LWIP_COMPAT_MUTEX && !defined(LWIP_COMPAT_MUTEX_ALLOWED)
00276   #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.)"
00277 #endif
00278 
00279 #ifndef LWIP_DISABLE_TCP_SANITY_CHECKS
00280 #define LWIP_DISABLE_TCP_SANITY_CHECKS  0
00281 #endif
00282 #ifndef LWIP_DISABLE_MEMP_SANITY_CHECKS
00283 #define LWIP_DISABLE_MEMP_SANITY_CHECKS 0
00284 #endif
00285 
00286 /* MEMP sanity checks */
00287 #if MEMP_MEM_MALLOC
00288 #if !LWIP_DISABLE_MEMP_SANITY_CHECKS
00289 #if LWIP_NETCONN || LWIP_SOCKET
00290 #if !MEMP_NUM_NETCONN && LWIP_SOCKET
00291 #error "lwip_sanity_check: WARNING: MEMP_NUM_NETCONN cannot be 0 when using sockets!"
00292 #endif
00293 #else /* MEMP_MEM_MALLOC */
00294 #if MEMP_NUM_NETCONN > (MEMP_NUM_TCP_PCB+MEMP_NUM_TCP_PCB_LISTEN+MEMP_NUM_UDP_PCB+MEMP_NUM_RAW_PCB)
00295 #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."
00296 #endif
00297 #endif /* LWIP_NETCONN || LWIP_SOCKET */
00298 #endif /* !LWIP_DISABLE_MEMP_SANITY_CHECKS */
00299 #if MEM_USE_POOLS
00300 #error "MEMP_MEM_MALLOC and MEM_USE_POOLS cannot be enabled at the same time"
00301 #endif
00302 #ifdef LWIP_HOOK_MEMP_AVAILABLE
00303 #error "LWIP_HOOK_MEMP_AVAILABLE doesn't make sense with MEMP_MEM_MALLOC"
00304 #endif
00305 #endif /* MEMP_MEM_MALLOC */
00306 
00307 /* TCP sanity checks */
00308 #if !LWIP_DISABLE_TCP_SANITY_CHECKS
00309 #if LWIP_TCP
00310 #if !MEMP_MEM_MALLOC && (MEMP_NUM_TCP_SEG < TCP_SND_QUEUELEN)
00311   #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."
00312 #endif
00313 #if TCP_SND_BUF < (2 * TCP_MSS)
00314   #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."
00315 #endif
00316 #if TCP_SND_QUEUELEN < (2 * (TCP_SND_BUF / TCP_MSS))
00317   #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."
00318 #endif
00319 #if TCP_SNDLOWAT >= TCP_SND_BUF
00320   #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."
00321 #endif
00322 #if TCP_SNDLOWAT >= (0xFFFF - (4 * TCP_MSS))
00323   #error "lwip_sanity_check: WARNING: TCP_SNDLOWAT must at least be 4*MSS below u16_t overflow!"
00324 #endif
00325 #if TCP_SNDQUEUELOWAT >= TCP_SND_QUEUELEN
00326   #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."
00327 #endif
00328 #if !MEMP_MEM_MALLOC && (PBUF_POOL_BUFSIZE <= (PBUF_LINK_ENCAPSULATION_HLEN + PBUF_LINK_HLEN + PBUF_IP_HLEN + PBUF_TRANSPORT_HLEN))
00329   #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."
00330 #endif
00331 #if !MEMP_MEM_MALLOC && (TCP_WND > (PBUF_POOL_SIZE * (PBUF_POOL_BUFSIZE - (PBUF_LINK_ENCAPSULATION_HLEN + PBUF_LINK_HLEN + PBUF_IP_HLEN + PBUF_TRANSPORT_HLEN))))
00332   #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."
00333 #endif
00334 #if TCP_WND < TCP_MSS
00335   #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."
00336 #endif
00337 #endif /* LWIP_TCP */
00338 #endif /* !LWIP_DISABLE_TCP_SANITY_CHECKS */
00339 
00340 /**
00341  * @ingroup lwip_nosys
00342  * Initialize all modules.
00343  * Use this in NO_SYS mode. Use tcpip_init() otherwise.
00344  */
00345 void
00346 lwip_init(void)
00347 {
00348   /* Modules initialization */
00349   stats_init();
00350 #if !NO_SYS
00351   sys_init();
00352 #endif /* !NO_SYS */
00353   mem_init();
00354   memp_init();
00355   pbuf_init();
00356   netif_init();
00357 #if LWIP_IPV4
00358   ip_init();
00359 #if LWIP_ARP
00360   etharp_init();
00361 #endif /* LWIP_ARP */
00362 #endif /* LWIP_IPV4 */
00363 #if LWIP_RAW
00364   raw_init();
00365 #endif /* LWIP_RAW */
00366 #if LWIP_UDP
00367   udp_init();
00368 #endif /* LWIP_UDP */
00369 #if LWIP_TCP
00370   tcp_init();
00371 #endif /* LWIP_TCP */
00372 #if LWIP_AUTOIP
00373   autoip_init();
00374 #endif /* LWIP_AUTOIP */
00375 #if LWIP_IGMP
00376   igmp_init();
00377 #endif /* LWIP_IGMP */
00378 #if LWIP_DNS
00379   dns_init();
00380 #endif /* LWIP_DNS */
00381 #if PPP_SUPPORT
00382   ppp_init();
00383 #endif
00384  
00385 #if LWIP_TIMERS
00386   sys_timeouts_init();
00387 #endif /* LWIP_TIMERS */
00388 }