BadVPN – Blame information for rev 1
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1 | office | 1 | /** |
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 | |||
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 | |||
40 | #include "lwip/opt.h" |
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41 | |||
42 | #if !NO_SYS /* don't build if not configured for use in lwipopts.h */ |
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43 | |||
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 | |||
48 | #ifdef __cplusplus |
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49 | extern "C" { |
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50 | #endif |
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51 | |||
52 | struct pbuf; |
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53 | struct netif; |
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54 | |||
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 | |||
97 | err_t tcpip_send_msg_wait_sem(tcpip_callback_fn fn, void *apimsg, sys_sem_t* sem); |
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98 | |||
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 | |||
113 | enum tcpip_msg_type { |
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114 | TCPIP_MSG_API, |
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115 | TCPIP_MSG_API_CALL, |
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116 | TCPIP_MSG_INPKT, |
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117 | #if LWIP_TCPIP_TIMEOUT && LWIP_TIMERS |
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118 | TCPIP_MSG_TIMEOUT, |
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119 | TCPIP_MSG_UNTIMEOUT, |
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120 | #endif /* LWIP_TCPIP_TIMEOUT && LWIP_TIMERS */ |
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121 | TCPIP_MSG_CALLBACK, |
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122 | TCPIP_MSG_CALLBACK_STATIC |
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123 | }; |
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124 | |||
125 | struct tcpip_msg { |
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126 | enum tcpip_msg_type type; |
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127 | union { |
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128 | struct { |
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129 | tcpip_callback_fn function; |
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130 | void* msg; |
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131 | } api_msg; |
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132 | struct { |
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133 | tcpip_api_call_fn function; |
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134 | struct tcpip_api_call_data *arg; |
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135 | sys_sem_t *sem; |
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136 | } api_call; |
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137 | struct { |
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138 | struct pbuf *p; |
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139 | struct netif *netif; |
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140 | netif_input_fn input_fn; |
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141 | } inp; |
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142 | struct { |
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143 | tcpip_callback_fn function; |
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144 | void *ctx; |
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145 | } cb; |
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146 | #if LWIP_TCPIP_TIMEOUT && LWIP_TIMERS |
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147 | struct { |
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148 | u32_t msecs; |
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149 | sys_timeout_handler h; |
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150 | void *arg; |
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151 | } tmo; |
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152 | #endif /* LWIP_TCPIP_TIMEOUT && LWIP_TIMERS */ |
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153 | } msg; |
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154 | }; |
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155 | |||
156 | #ifdef __cplusplus |
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157 | } |
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158 | #endif |
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159 | |||
160 | #endif /* !NO_SYS */ |
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161 | |||
162 | #endif /* LWIP_HDR_TCPIP_PRIV_H */ |