[457] | 1 | /**
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| 2 | * @file
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| 3 | * TCPIP API internal implementations (do not use in application code)
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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| 8 | * All rights reserved.
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| 9 | *
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| 10 | * Redistribution and use in source and binary forms, with or without modification,
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| 11 | * are permitted provided that the following conditions are met:
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| 12 | *
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| 13 | * 1. Redistributions of source code must retain the above copyright notice,
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| 14 | * this list of conditions and the following disclaimer.
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| 15 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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| 16 | * this list of conditions and the following disclaimer in the documentation
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| 17 | * and/or other materials provided with the distribution.
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| 18 | * 3. The name of the author may not be used to endorse or promote products
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| 19 | * derived from this software without specific prior written permission.
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| 20 | *
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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| 22 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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| 23 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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| 24 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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| 25 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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| 26 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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| 27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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| 28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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| 29 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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| 30 | * OF SUCH DAMAGE.
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| 31 | *
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| 32 | * This file is part of the lwIP TCP/IP stack.
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| 33 | *
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| 34 | * Author: Adam Dunkels <adam@sics.se>
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| 35 | *
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| 36 | */
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| 37 | #ifndef LWIP_HDR_TCPIP_PRIV_H
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| 38 | #define LWIP_HDR_TCPIP_PRIV_H
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| 39 |
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| 40 | #include "lwip/opt.h"
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| 41 |
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| 42 | #if !NO_SYS /* don't build if not configured for use in lwipopts.h */
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| 43 |
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| 44 | #include "lwip/tcpip.h"
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| 45 | #include "lwip/sys.h"
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| 46 | #include "lwip/timeouts.h"
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| 47 |
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| 48 | #ifdef __cplusplus
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| 49 | extern "C" {
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| 50 | #endif
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| 51 |
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| 52 | struct pbuf;
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| 53 | struct netif;
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| 54 |
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| 55 | #if LWIP_MPU_COMPATIBLE
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| 56 | #define API_VAR_REF(name) (*(name))
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| 57 | #define API_VAR_DECLARE(type, name) type * name
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| 58 | #define API_VAR_ALLOC_EXT(type, pool, name, errorblock) do { \
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| 59 | name = (type *)memp_malloc(pool); \
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| 60 | if (name == NULL) { \
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| 61 | errorblock; \
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| 62 | } \
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| 63 | } while(0)
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| 64 | #define API_VAR_ALLOC(type, pool, name, errorval) API_VAR_ALLOC_EXT(type, pool, name, return errorval)
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| 65 | #define API_VAR_ALLOC_POOL(type, pool, name, errorval) do { \
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| 66 | name = (type *)LWIP_MEMPOOL_ALLOC(pool); \
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| 67 | if (name == NULL) { \
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| 68 | return errorval; \
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| 69 | } \
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| 70 | } while(0)
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| 71 | #define API_VAR_FREE(pool, name) memp_free(pool, name)
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| 72 | #define API_VAR_FREE_POOL(pool, name) LWIP_MEMPOOL_FREE(pool, name)
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| 73 | #define API_EXPR_REF(expr) (&(expr))
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| 74 | #if LWIP_NETCONN_SEM_PER_THREAD
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| 75 | #define API_EXPR_REF_SEM(expr) (expr)
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| 76 | #else
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| 77 | #define API_EXPR_REF_SEM(expr) API_EXPR_REF(expr)
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| 78 | #endif
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| 79 | #define API_EXPR_DEREF(expr) expr
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| 80 | #define API_MSG_M_DEF(m) m
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| 81 | #define API_MSG_M_DEF_C(t, m) t m
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| 82 | #else /* LWIP_MPU_COMPATIBLE */
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| 83 | #define API_VAR_REF(name) name
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| 84 | #define API_VAR_DECLARE(type, name) type name
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| 85 | #define API_VAR_ALLOC_EXT(type, pool, name, errorblock)
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| 86 | #define API_VAR_ALLOC(type, pool, name, errorval)
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| 87 | #define API_VAR_ALLOC_POOL(type, pool, name, errorval)
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| 88 | #define API_VAR_FREE(pool, name)
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| 89 | #define API_VAR_FREE_POOL(pool, name)
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| 90 | #define API_EXPR_REF(expr) expr
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| 91 | #define API_EXPR_REF_SEM(expr) API_EXPR_REF(expr)
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| 92 | #define API_EXPR_DEREF(expr) (*(expr))
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| 93 | #define API_MSG_M_DEF(m) *m
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| 94 | #define API_MSG_M_DEF_C(t, m) const t * m
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| 95 | #endif /* LWIP_MPU_COMPATIBLE */
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| 96 |
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| 97 | err_t tcpip_send_msg_wait_sem(tcpip_callback_fn fn, void *apimsg, sys_sem_t* sem);
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| 98 |
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| 99 | struct tcpip_api_call_data
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| 100 | {
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| 101 | #if !LWIP_TCPIP_CORE_LOCKING
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| 102 | err_t err;
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| 103 | #if !LWIP_NETCONN_SEM_PER_THREAD
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| 104 | sys_sem_t sem;
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| 105 | #endif /* LWIP_NETCONN_SEM_PER_THREAD */
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| 106 | #else /* !LWIP_TCPIP_CORE_LOCKING */
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| 107 | u8_t dummy; /* avoid empty struct :-( */
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| 108 | #endif /* !LWIP_TCPIP_CORE_LOCKING */
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| 109 | };
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| 110 | typedef err_t (*tcpip_api_call_fn)(struct tcpip_api_call_data* call);
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| 111 | err_t tcpip_api_call(tcpip_api_call_fn fn, struct tcpip_api_call_data *call);
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| 112 |
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| 113 | enum tcpip_msg_type {
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| 114 | #if !LWIP_TCPIP_CORE_LOCKING
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| 115 | TCPIP_MSG_API,
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| 116 | TCPIP_MSG_API_CALL,
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| 117 | #endif /* !LWIP_TCPIP_CORE_LOCKING */
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| 118 | #if !LWIP_TCPIP_CORE_LOCKING_INPUT
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| 119 | TCPIP_MSG_INPKT,
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| 120 | #endif /* !LWIP_TCPIP_CORE_LOCKING_INPUT */
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| 121 | #if LWIP_TCPIP_TIMEOUT && LWIP_TIMERS
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| 122 | TCPIP_MSG_TIMEOUT,
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| 123 | TCPIP_MSG_UNTIMEOUT,
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| 124 | #endif /* LWIP_TCPIP_TIMEOUT && LWIP_TIMERS */
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| 125 | TCPIP_MSG_CALLBACK,
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| 126 | TCPIP_MSG_CALLBACK_STATIC
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| 127 | };
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| 128 |
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| 129 | struct tcpip_msg {
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| 130 | enum tcpip_msg_type type;
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| 131 | union {
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| 132 | #if !LWIP_TCPIP_CORE_LOCKING
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| 133 | struct {
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| 134 | tcpip_callback_fn function;
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| 135 | void* msg;
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| 136 | } api_msg;
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| 137 | struct {
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| 138 | tcpip_api_call_fn function;
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| 139 | struct tcpip_api_call_data *arg;
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| 140 | sys_sem_t *sem;
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| 141 | } api_call;
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| 142 | #endif /* LWIP_TCPIP_CORE_LOCKING */
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| 143 | #if !LWIP_TCPIP_CORE_LOCKING_INPUT
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| 144 | struct {
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| 145 | struct pbuf *p;
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| 146 | struct netif *netif;
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| 147 | netif_input_fn input_fn;
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| 148 | } inp;
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| 149 | #endif /* !LWIP_TCPIP_CORE_LOCKING_INPUT */
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| 150 | struct {
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| 151 | tcpip_callback_fn function;
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| 152 | void *ctx;
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| 153 | } cb;
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| 154 | #if LWIP_TCPIP_TIMEOUT && LWIP_TIMERS
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| 155 | struct {
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| 156 | u32_t msecs;
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| 157 | sys_timeout_handler h;
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| 158 | void *arg;
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| 159 | } tmo;
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| 160 | #endif /* LWIP_TCPIP_TIMEOUT && LWIP_TIMERS */
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| 161 | } msg;
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| 162 | };
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| 163 |
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| 164 | #ifdef __cplusplus
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| 165 | }
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| 166 | #endif
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| 167 |
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| 168 | #endif /* !NO_SYS */
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| 169 |
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| 170 | #endif /* LWIP_HDR_TCPIP_PRIV_H */
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