[164] | 1 | /*
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| 2 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without modification,
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| 6 | * are permitted provided that the following conditions are met:
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| 7 | *
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| 8 | * 1. Redistributions of source code must retain the above copyright notice,
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| 9 | * this list of conditions and the following disclaimer.
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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| 11 | * this list of conditions and the following disclaimer in the documentation
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| 12 | * and/or other materials provided with the distribution.
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| 13 | * 3. The name of the author may not be used to endorse or promote products
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| 14 | * derived from this software without specific prior written permission.
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| 15 | *
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| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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| 18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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| 19 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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| 20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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| 21 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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| 22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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| 23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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| 24 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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| 25 | * OF SUCH DAMAGE.
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| 26 | *
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| 27 | * This file is part of the lwIP TCP/IP stack.
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| 28 | *
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| 29 | * Author: Adam Dunkels <adam@sics.se>
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| 30 | *
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| 31 | */
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| 32 | #ifndef __LWIP_TCPIP_H__
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| 33 | #define __LWIP_TCPIP_H__
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| 34 |
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| 35 | #include "lwip/opt.h"
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| 36 |
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| 37 | #if !NO_SYS /* don't build if not configured for use in lwipopts.h */
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| 38 |
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| 39 | #include "lwip/api_msg.h"
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| 40 | #include "lwip/netifapi.h"
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| 41 | #include "lwip/pbuf.h"
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| 42 | #include "lwip/api.h"
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| 43 | #include "lwip/sys.h"
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| 44 | #include "lwip/timers.h"
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| 45 | #include "lwip/netif.h"
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| 46 |
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| 47 | #ifdef __cplusplus
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| 48 | extern "C" {
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| 49 | #endif
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| 50 |
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| 51 | /** Define this to something that triggers a watchdog. This is called from
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| 52 | * tcpip_thread after processing a message. */
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| 53 | #ifndef LWIP_TCPIP_THREAD_ALIVE
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| 54 | #define LWIP_TCPIP_THREAD_ALIVE()
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| 55 | #endif
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| 56 |
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| 57 | #if LWIP_TCPIP_CORE_LOCKING
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| 58 | /** The global semaphore to lock the stack. */
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| 59 | extern sys_mutex_t lock_tcpip_core;
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| 60 | #define LOCK_TCPIP_CORE() sys_mutex_lock(&lock_tcpip_core)
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| 61 | #define UNLOCK_TCPIP_CORE() sys_mutex_unlock(&lock_tcpip_core)
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| 62 | #define TCPIP_APIMSG(m) tcpip_apimsg_lock(m)
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| 63 | #define TCPIP_APIMSG_ACK(m)
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| 64 | #define TCPIP_NETIFAPI(m) tcpip_netifapi_lock(m)
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| 65 | #define TCPIP_NETIFAPI_ACK(m)
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| 66 | #else /* LWIP_TCPIP_CORE_LOCKING */
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| 67 | #define LOCK_TCPIP_CORE()
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| 68 | #define UNLOCK_TCPIP_CORE()
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| 69 | #define TCPIP_APIMSG(m) tcpip_apimsg(m)
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| 70 | #define TCPIP_APIMSG_ACK(m) sys_sem_signal(&m->conn->op_completed)
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| 71 | #define TCPIP_NETIFAPI(m) tcpip_netifapi(m)
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| 72 | #define TCPIP_NETIFAPI_ACK(m) sys_sem_signal(&m->sem)
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| 73 | #endif /* LWIP_TCPIP_CORE_LOCKING */
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| 74 |
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| 75 | /** Function prototype for the init_done function passed to tcpip_init */
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| 76 | typedef void (*tcpip_init_done_fn)(void *arg);
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| 77 | /** Function prototype for functions passed to tcpip_callback() */
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| 78 | typedef void (*tcpip_callback_fn)(void *ctx);
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| 79 |
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| 80 | /* Forward declarations */
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| 81 | struct tcpip_callback_msg;
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| 82 |
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| 83 | void tcpip_init(tcpip_init_done_fn tcpip_init_done, void *arg);
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| 84 |
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| 85 | #if LWIP_NETCONN
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| 86 | err_t tcpip_apimsg(struct api_msg *apimsg);
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| 87 | #if LWIP_TCPIP_CORE_LOCKING
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| 88 | err_t tcpip_apimsg_lock(struct api_msg *apimsg);
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| 89 | #endif /* LWIP_TCPIP_CORE_LOCKING */
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| 90 | #endif /* LWIP_NETCONN */
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| 91 |
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| 92 | err_t tcpip_input(struct pbuf *p, struct netif *inp);
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| 93 |
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| 94 | #if LWIP_NETIF_API
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| 95 | err_t tcpip_netifapi(struct netifapi_msg *netifapimsg);
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| 96 | #if LWIP_TCPIP_CORE_LOCKING
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| 97 | err_t tcpip_netifapi_lock(struct netifapi_msg *netifapimsg);
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| 98 | #endif /* LWIP_TCPIP_CORE_LOCKING */
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| 99 | #endif /* LWIP_NETIF_API */
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| 100 |
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| 101 | err_t tcpip_callback_with_block(tcpip_callback_fn function, void *ctx, u8_t block);
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| 102 | #define tcpip_callback(f, ctx) tcpip_callback_with_block(f, ctx, 1)
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| 103 |
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| 104 | struct tcpip_callback_msg* tcpip_callbackmsg_new(tcpip_callback_fn function, void *ctx);
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| 105 | void tcpip_callbackmsg_delete(struct tcpip_callback_msg* msg);
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| 106 | err_t tcpip_trycallback(struct tcpip_callback_msg* msg);
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| 107 |
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| 108 | /* free pbufs or heap memory from another context without blocking */
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| 109 | err_t pbuf_free_callback(struct pbuf *p);
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| 110 | err_t mem_free_callback(void *m);
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| 111 |
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| 112 | #if LWIP_TCPIP_TIMEOUT
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| 113 | err_t tcpip_timeout(u32_t msecs, sys_timeout_handler h, void *arg);
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| 114 | err_t tcpip_untimeout(sys_timeout_handler h, void *arg);
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| 115 | #endif /* LWIP_TCPIP_TIMEOUT */
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| 116 |
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| 117 | enum tcpip_msg_type {
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| 118 | #if LWIP_NETCONN
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| 119 | TCPIP_MSG_API,
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| 120 | #endif /* LWIP_NETCONN */
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| 121 | TCPIP_MSG_INPKT,
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| 122 | #if LWIP_NETIF_API
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| 123 | TCPIP_MSG_NETIFAPI,
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| 124 | #endif /* LWIP_NETIF_API */
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| 125 | #if LWIP_TCPIP_TIMEOUT
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| 126 | TCPIP_MSG_TIMEOUT,
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| 127 | TCPIP_MSG_UNTIMEOUT,
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| 128 | #endif /* LWIP_TCPIP_TIMEOUT */
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| 129 | TCPIP_MSG_CALLBACK,
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| 130 | TCPIP_MSG_CALLBACK_STATIC
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| 131 | };
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| 132 |
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| 133 | struct tcpip_msg {
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| 134 | enum tcpip_msg_type type;
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| 135 | sys_sem_t *sem;
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| 136 | union {
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| 137 | #if LWIP_NETCONN
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| 138 | struct api_msg *apimsg;
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| 139 | #endif /* LWIP_NETCONN */
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| 140 | #if LWIP_NETIF_API
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| 141 | struct netifapi_msg *netifapimsg;
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| 142 | #endif /* LWIP_NETIF_API */
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| 143 | struct {
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| 144 | struct pbuf *p;
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| 145 | struct netif *netif;
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| 146 | } inp;
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| 147 | struct {
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| 148 | tcpip_callback_fn function;
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| 149 | void *ctx;
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| 150 | } cb;
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| 151 | #if LWIP_TCPIP_TIMEOUT
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| 152 | struct {
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| 153 | u32_t msecs;
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| 154 | sys_timeout_handler h;
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| 155 | void *arg;
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| 156 | } tmo;
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| 157 | #endif /* LWIP_TCPIP_TIMEOUT */
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| 158 | } msg;
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| 159 | };
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| 160 |
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| 161 | #ifdef __cplusplus
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| 162 | }
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| 163 | #endif
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| 164 |
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| 165 | #endif /* !NO_SYS */
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| 166 |
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| 167 | #endif /* __LWIP_TCPIP_H__ */
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