| 1 | /**
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| 2 | * @file
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| 3 | * Modules initialization
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| 4 | *
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| 5 | */
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| 6 |
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| 7 | /*
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| 8 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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| 9 | * All rights reserved.
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| 10 | *
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| 11 | * Redistribution and use in source and binary forms, with or without modification,
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| 12 | * are permitted provided that the following conditions are met:
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| 13 | *
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| 14 | * 1. Redistributions of source code must retain the above copyright notice,
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| 15 | * this list of conditions and the following disclaimer.
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| 16 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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| 17 | * this list of conditions and the following disclaimer in the documentation
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| 18 | * and/or other materials provided with the distribution.
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| 19 | * 3. The name of the author may not be used to endorse or promote products
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| 20 | * derived from this software without specific prior written permission.
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| 21 | *
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| 22 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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| 23 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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| 24 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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| 25 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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| 26 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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| 27 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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| 28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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| 29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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| 30 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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| 31 | * OF SUCH DAMAGE.
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| 32 | *
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| 33 | * This file is part of the lwIP TCP/IP stack.
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| 34 | *
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| 35 | * Author: Adam Dunkels <adam@sics.se>
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| 36 | *
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| 37 | */
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| 38 |
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| 39 | #include "lwip/opt.h"
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| 40 |
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| 41 | #include "lwip/init.h"
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| 42 | #include "lwip/stats.h"
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| 43 | #include "lwip/sys.h"
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| 44 | #include "lwip/mem.h"
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| 45 | #include "lwip/memp.h"
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| 46 | #include "lwip/pbuf.h"
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| 47 | #include "lwip/netif.h"
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| 48 | #include "lwip/sockets.h"
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| 49 | #include "lwip/ip.h"
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| 50 | #include "lwip/raw.h"
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| 51 | #include "lwip/udp.h"
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| 52 | #include "lwip/tcp_impl.h"
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| 53 | #include "lwip/snmp_msg.h"
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| 54 | #include "lwip/autoip.h"
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| 55 | #include "lwip/igmp.h"
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| 56 | #include "lwip/dns.h"
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| 57 | #include "lwip/timers.h"
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| 58 | #include "netif/etharp.h"
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| 59 | #include "lwip/api.h"
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| 60 |
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| 61 | /* Compile-time sanity checks for configuration errors.
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| 62 | * These can be done independently of LWIP_DEBUG, without penalty.
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| 63 | */
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| 64 | #ifndef BYTE_ORDER
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| 65 | #error "BYTE_ORDER is not defined, you have to define it in your cc.h"
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| 66 | #endif
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| 67 | #if (!IP_SOF_BROADCAST && IP_SOF_BROADCAST_RECV)
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| 68 | #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"
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| 69 | #endif
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| 70 | #if (!LWIP_UDP && LWIP_UDPLITE)
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| 71 | #error "If you want to use UDP Lite, you have to define LWIP_UDP=1 in your lwipopts.h"
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| 72 | #endif
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| 73 | #if (!LWIP_UDP && LWIP_SNMP)
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| 74 | #error "If you want to use SNMP, you have to define LWIP_UDP=1 in your lwipopts.h"
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| 75 | #endif
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| 76 | #if (!LWIP_UDP && LWIP_DHCP)
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| 77 | #error "If you want to use DHCP, you have to define LWIP_UDP=1 in your lwipopts.h"
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| 78 | #endif
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| 79 | #if (!LWIP_UDP && LWIP_IGMP)
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| 80 | #error "If you want to use IGMP, you have to define LWIP_UDP=1 in your lwipopts.h"
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| 81 | #endif
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| 82 | #if (!LWIP_UDP && LWIP_SNMP)
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| 83 | #error "If you want to use SNMP, you have to define LWIP_UDP=1 in your lwipopts.h"
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| 84 | #endif
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| 85 | #if (!LWIP_UDP && LWIP_DNS)
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| 86 | #error "If you want to use DNS, you have to define LWIP_UDP=1 in your lwipopts.h"
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| 87 | #endif
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| 88 | #if !MEMP_MEM_MALLOC /* MEMP_NUM_* checks are disabled when not using the pool allocator */
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| 89 | #if (LWIP_ARP && ARP_QUEUEING && (MEMP_NUM_ARP_QUEUE<=0))
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| 90 | #error "If you want to use ARP Queueing, you have to define MEMP_NUM_ARP_QUEUE>=1 in your lwipopts.h"
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| 91 | #endif
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| 92 | #if (LWIP_RAW && (MEMP_NUM_RAW_PCB<=0))
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| 93 | #error "If you want to use RAW, you have to define MEMP_NUM_RAW_PCB>=1 in your lwipopts.h"
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| 94 | #endif
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| 95 | #if (LWIP_UDP && (MEMP_NUM_UDP_PCB<=0))
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| 96 | #error "If you want to use UDP, you have to define MEMP_NUM_UDP_PCB>=1 in your lwipopts.h"
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| 97 | #endif
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| 98 | #if (LWIP_TCP && (MEMP_NUM_TCP_PCB<=0))
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| 99 | #error "If you want to use TCP, you have to define MEMP_NUM_TCP_PCB>=1 in your lwipopts.h"
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| 100 | #endif
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| 101 | #if (LWIP_IGMP && (MEMP_NUM_IGMP_GROUP<=1))
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| 102 | #error "If you want to use IGMP, you have to define MEMP_NUM_IGMP_GROUP>1 in your lwipopts.h"
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| 103 | #endif
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| 104 | #if ((LWIP_NETCONN || LWIP_SOCKET) && (MEMP_NUM_TCPIP_MSG_API<=0))
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| 105 | #error "If you want to use Sequential API, you have to define MEMP_NUM_TCPIP_MSG_API>=1 in your lwipopts.h"
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| 106 | #endif
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| 107 | /* There must be sufficient timeouts, taking into account requirements of the subsystems. */
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| 108 | #if LWIP_TIMERS && (MEMP_NUM_SYS_TIMEOUT < (LWIP_TCP + IP_REASSEMBLY + LWIP_ARP + (2*LWIP_DHCP) + LWIP_AUTOIP + LWIP_IGMP + LWIP_DNS + PPP_SUPPORT))
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| 109 | #error "MEMP_NUM_SYS_TIMEOUT is too low to accomodate all required timeouts"
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| 110 | #endif
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| 111 | #if (IP_REASSEMBLY && (MEMP_NUM_REASSDATA > IP_REASS_MAX_PBUFS))
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| 112 | #error "MEMP_NUM_REASSDATA > IP_REASS_MAX_PBUFS doesn't make sense since each struct ip_reassdata must hold 2 pbufs at least!"
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| 113 | #endif
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| 114 | #endif /* !MEMP_MEM_MALLOC */
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| 115 | #if (LWIP_TCP && (TCP_WND > 0xffff))
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| 116 | #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"
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| 117 | #endif
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| 118 | #if (LWIP_TCP && (TCP_SND_QUEUELEN > 0xffff))
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| 119 | #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"
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| 120 | #endif
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| 121 | #if (LWIP_TCP && (TCP_SND_QUEUELEN < 2))
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| 122 | #error "TCP_SND_QUEUELEN must be at least 2 for no-copy TCP writes to work"
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| 123 | #endif
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| 124 | #if (LWIP_TCP && ((TCP_MAXRTX > 12) || (TCP_SYNMAXRTX > 12)))
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| 125 | #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"
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| 126 | #endif
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| 127 | #if (LWIP_TCP && TCP_LISTEN_BACKLOG && (TCP_DEFAULT_LISTEN_BACKLOG < 0) || (TCP_DEFAULT_LISTEN_BACKLOG > 0xff))
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| 128 | #error "If you want to use TCP backlog, TCP_DEFAULT_LISTEN_BACKLOG must fit into an u8_t"
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| 129 | #endif
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| 130 | #if (LWIP_NETIF_API && (NO_SYS==1))
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| 131 | #error "If you want to use NETIF API, you have to define NO_SYS=0 in your lwipopts.h"
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| 132 | #endif
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| 133 | #if ((LWIP_SOCKET || LWIP_NETCONN) && (NO_SYS==1))
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| 134 | #error "If you want to use Sequential API, you have to define NO_SYS=0 in your lwipopts.h"
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| 135 | #endif
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| 136 | #if (!LWIP_NETCONN && LWIP_SOCKET)
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| 137 | #error "If you want to use Socket API, you have to define LWIP_NETCONN=1 in your lwipopts.h"
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| 138 | #endif
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| 139 | #if (((!LWIP_DHCP) || (!LWIP_AUTOIP)) && LWIP_DHCP_AUTOIP_COOP)
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| 140 | #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"
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| 141 | #endif
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| 142 | #if (((!LWIP_DHCP) || (!LWIP_ARP)) && DHCP_DOES_ARP_CHECK)
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| 143 | #error "If you want to use DHCP ARP checking, you have to define LWIP_DHCP=1 and LWIP_ARP=1 in your lwipopts.h"
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| 144 | #endif
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| 145 | #if (!LWIP_ARP && LWIP_AUTOIP)
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| 146 | #error "If you want to use AUTOIP, you have to define LWIP_ARP=1 in your lwipopts.h"
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| 147 | #endif
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| 148 | #if (LWIP_SNMP && (SNMP_CONCURRENT_REQUESTS<=0))
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| 149 | #error "If you want to use SNMP, you have to define SNMP_CONCURRENT_REQUESTS>=1 in your lwipopts.h"
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| 150 | #endif
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| 151 | #if (LWIP_SNMP && (SNMP_TRAP_DESTINATIONS<=0))
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| 152 | #error "If you want to use SNMP, you have to define SNMP_TRAP_DESTINATIONS>=1 in your lwipopts.h"
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| 153 | #endif
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| 154 | #if (LWIP_TCP && ((LWIP_EVENT_API && LWIP_CALLBACK_API) || (!LWIP_EVENT_API && !LWIP_CALLBACK_API)))
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| 155 | #error "One and exactly one of LWIP_EVENT_API and LWIP_CALLBACK_API has to be enabled in your lwipopts.h"
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| 156 | #endif
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| 157 | #if (MEM_LIBC_MALLOC && MEM_USE_POOLS)
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| 158 | #error "MEM_LIBC_MALLOC and MEM_USE_POOLS may not both be simultaneously enabled in your lwipopts.h"
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| 159 | #endif
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| 160 | #if (MEM_USE_POOLS && !MEMP_USE_CUSTOM_POOLS)
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| 161 | #error "MEM_USE_POOLS requires custom pools (MEMP_USE_CUSTOM_POOLS) to be enabled in your lwipopts.h"
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| 162 | #endif
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| 163 | #if (PBUF_POOL_BUFSIZE <= MEM_ALIGNMENT)
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| 164 | #error "PBUF_POOL_BUFSIZE must be greater than MEM_ALIGNMENT or the offset may take the full first pbuf"
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| 165 | #endif
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| 166 | #if (DNS_LOCAL_HOSTLIST && !DNS_LOCAL_HOSTLIST_IS_DYNAMIC && !(defined(DNS_LOCAL_HOSTLIST_INIT)))
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| 167 | #error "you have to define define DNS_LOCAL_HOSTLIST_INIT {{'host1', 0x123}, {'host2', 0x234}} to initialize DNS_LOCAL_HOSTLIST"
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| 168 | #endif
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| 169 | #if PPP_SUPPORT && !PPPOS_SUPPORT & !PPPOE_SUPPORT
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| 170 | #error "PPP_SUPPORT needs either PPPOS_SUPPORT or PPPOE_SUPPORT turned on"
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| 171 | #endif
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| 172 | #if !LWIP_ETHERNET && (LWIP_ARP || PPPOE_SUPPORT)
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| 173 | #error "LWIP_ETHERNET needs to be turned on for LWIP_ARP or PPPOE_SUPPORT"
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| 174 | #endif
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| 175 | #if LWIP_IGMP && !defined(LWIP_RAND)
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| 176 | #error "When using IGMP, LWIP_RAND() needs to be defined to a random-function returning an u32_t random value"
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| 177 | #endif
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| 178 | #if LWIP_TCPIP_CORE_LOCKING_INPUT && !LWIP_TCPIP_CORE_LOCKING
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| 179 | #error "When using LWIP_TCPIP_CORE_LOCKING_INPUT, LWIP_TCPIP_CORE_LOCKING must be enabled, too"
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| 180 | #endif
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| 181 | #if LWIP_TCP && LWIP_NETIF_TX_SINGLE_PBUF && !TCP_OVERSIZE
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| 182 | #error "LWIP_NETIF_TX_SINGLE_PBUF needs TCP_OVERSIZE enabled to create single-pbuf TCP packets"
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| 183 | #endif
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| 184 | #if IP_FRAG && IP_FRAG_USES_STATIC_BUF && LWIP_NETIF_TX_SINGLE_PBUF
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| 185 | #error "LWIP_NETIF_TX_SINGLE_PBUF does not work with IP_FRAG_USES_STATIC_BUF==1 as that creates pbuf queues"
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| 186 | #endif
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| 187 | #if LWIP_NETCONN && LWIP_TCP
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| 188 | #if NETCONN_COPY != TCP_WRITE_FLAG_COPY
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| 189 | #error "NETCONN_COPY != TCP_WRITE_FLAG_COPY"
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| 190 | #endif
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| 191 | #if NETCONN_MORE != TCP_WRITE_FLAG_MORE
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| 192 | #error "NETCONN_MORE != TCP_WRITE_FLAG_MORE"
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| 193 | #endif
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| 194 | #endif /* LWIP_NETCONN && LWIP_TCP */
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| 195 | #if LWIP_SOCKET
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| 196 | /* Check that the SO_* socket options and SOF_* lwIP-internal flags match */
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| 197 | #if SO_ACCEPTCONN != SOF_ACCEPTCONN
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| 198 | #error "SO_ACCEPTCONN != SOF_ACCEPTCONN"
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| 199 | #endif
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| 200 | #if SO_REUSEADDR != SOF_REUSEADDR
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| 201 | #error "WARNING: SO_REUSEADDR != SOF_REUSEADDR"
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| 202 | #endif
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| 203 | #if SO_KEEPALIVE != SOF_KEEPALIVE
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| 204 | #error "WARNING: SO_KEEPALIVE != SOF_KEEPALIVE"
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| 205 | #endif
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| 206 | #if SO_BROADCAST != SOF_BROADCAST
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| 207 | #error "WARNING: SO_BROADCAST != SOF_BROADCAST"
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| 208 | #endif
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| 209 | #if SO_LINGER != SOF_LINGER
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| 210 | #error "WARNING: SO_LINGER != SOF_LINGER"
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| 211 | #endif
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| 212 | #endif /* LWIP_SOCKET */
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| 213 |
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| 214 |
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| 215 | /* Compile-time checks for deprecated options.
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| 216 | */
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| 217 | #ifdef MEMP_NUM_TCPIP_MSG
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| 218 | #error "MEMP_NUM_TCPIP_MSG option is deprecated. Remove it from your lwipopts.h."
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| 219 | #endif
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| 220 | #ifdef MEMP_NUM_API_MSG
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| 221 | #error "MEMP_NUM_API_MSG option is deprecated. Remove it from your lwipopts.h."
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| 222 | #endif
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| 223 | #ifdef TCP_REXMIT_DEBUG
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| 224 | #error "TCP_REXMIT_DEBUG option is deprecated. Remove it from your lwipopts.h."
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| 225 | #endif
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| 226 | #ifdef RAW_STATS
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| 227 | #error "RAW_STATS option is deprecated. Remove it from your lwipopts.h."
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| 228 | #endif
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| 229 | #ifdef ETHARP_QUEUE_FIRST
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| 230 | #error "ETHARP_QUEUE_FIRST option is deprecated. Remove it from your lwipopts.h."
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| 231 | #endif
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| 232 | #ifdef ETHARP_ALWAYS_INSERT
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| 233 | #error "ETHARP_ALWAYS_INSERT option is deprecated. Remove it from your lwipopts.h."
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| 234 | #endif
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| 235 |
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| 236 | #ifndef LWIP_DISABLE_TCP_SANITY_CHECKS
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| 237 | #define LWIP_DISABLE_TCP_SANITY_CHECKS 0
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| 238 | #endif
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| 239 | #ifndef LWIP_DISABLE_MEMP_SANITY_CHECKS
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| 240 | #define LWIP_DISABLE_MEMP_SANITY_CHECKS 0
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| 241 | #endif
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| 242 |
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| 243 | /* MEMP sanity checks */
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| 244 | #if !LWIP_DISABLE_MEMP_SANITY_CHECKS
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| 245 | #if LWIP_NETCONN
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| 246 | #if MEMP_MEM_MALLOC
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| 247 | #if !MEMP_NUM_NETCONN && LWIP_SOCKET
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| 248 | #error "lwip_sanity_check: WARNING: MEMP_NUM_NETCONN cannot be 0 when using sockets!"
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| 249 | #endif
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| 250 | #else /* MEMP_MEM_MALLOC */
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| 251 | #if MEMP_NUM_NETCONN > (MEMP_NUM_TCP_PCB+MEMP_NUM_TCP_PCB_LISTEN+MEMP_NUM_UDP_PCB+MEMP_NUM_RAW_PCB)
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| 252 | #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."
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| 253 | #endif
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| 254 | #endif /* MEMP_MEM_MALLOC */
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| 255 | #endif /* LWIP_NETCONN */
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| 256 | #endif /* !LWIP_DISABLE_MEMP_SANITY_CHECKS */
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| 257 |
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| 258 | /* TCP sanity checks */
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| 259 | #if !LWIP_DISABLE_TCP_SANITY_CHECKS
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| 260 | #if LWIP_TCP
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| 261 | #if !MEMP_MEM_MALLOC && (MEMP_NUM_TCP_SEG < TCP_SND_QUEUELEN)
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| 262 | #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."
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| 263 | #endif
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| 264 | #if TCP_SND_BUF < (2 * TCP_MSS)
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| 265 | #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."
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| 266 | #endif
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| 267 | #if TCP_SND_QUEUELEN < (2 * (TCP_SND_BUF / TCP_MSS))
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| 268 | #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."
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| 269 | #endif
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| 270 | #if TCP_SNDLOWAT >= TCP_SND_BUF
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| 271 | #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."
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| 272 | #endif
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| 273 | #if TCP_SNDQUEUELOWAT >= TCP_SND_QUEUELEN
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| 274 | #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."
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| 275 | #endif
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| 276 | #if !MEMP_MEM_MALLOC && (TCP_WND > (PBUF_POOL_SIZE * (PBUF_POOL_BUFSIZE - (PBUF_LINK_HLEN + PBUF_IP_HLEN + PBUF_TRANSPORT_HLEN))))
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| 277 | #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."
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| 278 | #endif
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| 279 | #if TCP_WND < TCP_MSS
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| 280 | #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."
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| 281 | #endif
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| 282 | #endif /* LWIP_TCP */
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| 283 | #endif /* !LWIP_DISABLE_TCP_SANITY_CHECKS */
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| 284 |
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| 285 | /**
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| 286 | * Perform Sanity check of user-configurable values, and initialize all modules.
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| 287 | */
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| 288 | void
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| 289 | lwip_init(void)
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| 290 | {
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| 291 | /* Modules initialization */
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| 292 | stats_init();
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| 293 | #if !NO_SYS
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| 294 | sys_init();
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| 295 | #endif /* !NO_SYS */
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| 296 | mem_init();
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| 297 | memp_init();
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| 298 | pbuf_init();
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| 299 | netif_init();
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| 300 | #if LWIP_SOCKET
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| 301 | lwip_socket_init();
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| 302 | #endif /* LWIP_SOCKET */
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| 303 | ip_init();
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| 304 | #if LWIP_ARP
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| 305 | etharp_init();
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| 306 | #endif /* LWIP_ARP */
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| 307 | #if LWIP_RAW
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| 308 | raw_init();
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| 309 | #endif /* LWIP_RAW */
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| 310 | #if LWIP_UDP
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| 311 | udp_init();
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| 312 | #endif /* LWIP_UDP */
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| 313 | #if LWIP_TCP
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| 314 | tcp_init();
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| 315 | #endif /* LWIP_TCP */
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| 316 | #if LWIP_SNMP
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| 317 | snmp_init();
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| 318 | #endif /* LWIP_SNMP */
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| 319 | #if LWIP_AUTOIP
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| 320 | autoip_init();
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| 321 | #endif /* LWIP_AUTOIP */
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| 322 | #if LWIP_IGMP
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| 323 | igmp_init();
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| 324 | #endif /* LWIP_IGMP */
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| 325 | #if LWIP_DNS
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| 326 | dns_init();
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| 327 | #endif /* LWIP_DNS */
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| 328 |
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| 329 | #if LWIP_TIMERS
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| 330 | sys_timeouts_init();
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| 331 | #endif /* LWIP_TIMERS */
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| 332 | }
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