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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