1 | /**
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2 | * @file
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3 | * Functions to sync with TCPIP thread
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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_H
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38 | #define LWIP_HDR_TCPIP_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/err.h"
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45 | #include "lwip/timeouts.h"
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46 | #include "lwip/netif.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 | #if LWIP_TCPIP_CORE_LOCKING
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53 | /** The global semaphore to lock the stack. */
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54 | extern sys_mutex_t lock_tcpip_core;
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55 | #if !defined LOCK_TCPIP_CORE || defined __DOXYGEN__
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56 | /** Lock lwIP core mutex (needs @ref LWIP_TCPIP_CORE_LOCKING 1) */
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57 | #define LOCK_TCPIP_CORE() sys_mutex_lock(&lock_tcpip_core)
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58 | /** Unlock lwIP core mutex (needs @ref LWIP_TCPIP_CORE_LOCKING 1) */
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59 | #define UNLOCK_TCPIP_CORE() sys_mutex_unlock(&lock_tcpip_core)
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60 | #endif /* LOCK_TCPIP_CORE */
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61 | #else /* LWIP_TCPIP_CORE_LOCKING */
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62 | #define LOCK_TCPIP_CORE()
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63 | #define UNLOCK_TCPIP_CORE()
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64 | #endif /* LWIP_TCPIP_CORE_LOCKING */
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65 |
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66 | struct pbuf;
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67 | struct netif;
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68 |
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69 | /** Function prototype for the init_done function passed to tcpip_init */
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70 | typedef void (*tcpip_init_done_fn)(void *arg);
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71 | /** Function prototype for functions passed to tcpip_callback() */
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72 | typedef void (*tcpip_callback_fn)(void *ctx);
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73 |
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74 | /* Forward declarations */
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75 | struct tcpip_callback_msg;
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76 |
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77 | void tcpip_init(tcpip_init_done_fn tcpip_init_done, void *arg);
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78 |
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79 | err_t tcpip_inpkt(struct pbuf *p, struct netif *inp, netif_input_fn input_fn);
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80 | err_t tcpip_input(struct pbuf *p, struct netif *inp);
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81 |
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82 | err_t tcpip_try_callback(tcpip_callback_fn function, void *ctx);
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83 | err_t tcpip_callback(tcpip_callback_fn function, void *ctx);
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84 | /** @ingroup lwip_os
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85 | * @deprecated use tcpip_try_callback() or tcpip_callback() instead
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86 | */
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87 | #define tcpip_callback_with_block(function, ctx, block) ((block != 0)? tcpip_callback(function, ctx) : tcpip_try_callback(function, ctx))
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88 |
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89 | struct tcpip_callback_msg* tcpip_callbackmsg_new(tcpip_callback_fn function, void *ctx);
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90 | void tcpip_callbackmsg_delete(struct tcpip_callback_msg* msg);
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91 | err_t tcpip_callbackmsg_trycallback(struct tcpip_callback_msg* msg);
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92 | err_t tcpip_callbackmsg_trycallback_fromisr(struct tcpip_callback_msg* msg);
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93 |
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94 | /* free pbufs or heap memory from another context without blocking */
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95 | err_t pbuf_free_callback(struct pbuf *p);
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96 | err_t mem_free_callback(void *m);
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97 |
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98 | #if LWIP_TCPIP_TIMEOUT && LWIP_TIMERS
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99 | err_t tcpip_timeout(u32_t msecs, sys_timeout_handler h, void *arg);
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100 | err_t tcpip_untimeout(sys_timeout_handler h, void *arg);
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101 | #endif /* LWIP_TCPIP_TIMEOUT && LWIP_TIMERS */
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102 |
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103 | #ifdef TCPIP_THREAD_TEST
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104 | int tcpip_thread_poll_one(void);
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105 | #endif
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106 |
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107 | #ifdef __cplusplus
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108 | }
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109 | #endif
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110 |
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111 | #endif /* !NO_SYS */
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112 |
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113 | #endif /* LWIP_HDR_TCPIP_H */
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