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AutoIpNetStack
Net stack with AutoIP enabled
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tcpip.h
00001 /* 00002 * Copyright (c) 2001-2004 Swedish Institute of Computer Science. 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without modification, 00006 * are permitted provided that the following conditions are met: 00007 * 00008 * 1. Redistributions of source code must retain the above copyright notice, 00009 * this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright notice, 00011 * this list of conditions and the following disclaimer in the documentation 00012 * and/or other materials provided with the distribution. 00013 * 3. The name of the author may not be used to endorse or promote products 00014 * derived from this software without specific prior written permission. 00015 * 00016 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 00017 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 00018 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 00019 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00020 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 00021 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00022 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00023 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 00024 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 00025 * OF SUCH DAMAGE. 00026 * 00027 * This file is part of the lwIP TCP/IP stack. 00028 * 00029 * Author: Adam Dunkels <adam@sics.se> 00030 * 00031 */ 00032 #ifndef __LWIP_TCPIP_H__ 00033 #define __LWIP_TCPIP_H__ 00034 00035 #include "lwip/opt.h" 00036 00037 #if !NO_SYS /* don't build if not configured for use in lwipopts.h */ 00038 00039 #include "lwip/api_msg.h" 00040 #include "lwip/netifapi.h" 00041 #include "lwip/pbuf.h" 00042 #include "lwip/api.h" 00043 #include "lwip/sys.h" 00044 #include "lwip/timers.h" 00045 #include "lwip/netif.h" 00046 00047 #ifdef __cplusplus 00048 extern "C" { 00049 #endif 00050 00051 #if LWIP_TCPIP_CORE_LOCKING 00052 /** The global semaphore to lock the stack. */ 00053 extern sys_mutex_t lock_tcpip_core; 00054 #define LOCK_TCPIP_CORE() sys_mutex_lock(&lock_tcpip_core) 00055 #define UNLOCK_TCPIP_CORE() sys_mutex_unlock(&lock_tcpip_core) 00056 #define TCPIP_APIMSG(m) tcpip_apimsg_lock(m) 00057 #define TCPIP_APIMSG_ACK(m) 00058 #define TCPIP_NETIFAPI(m) tcpip_netifapi_lock(m) 00059 #define TCPIP_NETIFAPI_ACK(m) 00060 #else /* LWIP_TCPIP_CORE_LOCKING */ 00061 #define LOCK_TCPIP_CORE() 00062 #define UNLOCK_TCPIP_CORE() 00063 #define TCPIP_APIMSG(m) tcpip_apimsg(m) 00064 #define TCPIP_APIMSG_ACK(m) sys_sem_signal(&m->conn->op_completed) 00065 #define TCPIP_NETIFAPI(m) tcpip_netifapi(m) 00066 #define TCPIP_NETIFAPI_ACK(m) sys_sem_signal(&m->sem) 00067 #endif /* LWIP_TCPIP_CORE_LOCKING */ 00068 00069 /** Function prototype for the init_done function passed to tcpip_init */ 00070 typedef void (*tcpip_init_done_fn)(void *arg); 00071 /** Function prototype for functions passed to tcpip_callback() */ 00072 typedef void (*tcpip_callback_fn)(void *ctx); 00073 00074 void tcpip_init(tcpip_init_done_fn tcpip_init_done, void *arg); 00075 00076 #if LWIP_NETCONN 00077 err_t tcpip_apimsg(struct api_msg *apimsg); 00078 #if LWIP_TCPIP_CORE_LOCKING 00079 err_t tcpip_apimsg_lock(struct api_msg *apimsg); 00080 #endif /* LWIP_TCPIP_CORE_LOCKING */ 00081 #endif /* LWIP_NETCONN */ 00082 00083 err_t tcpip_input(struct pbuf *p, struct netif *inp); 00084 00085 #if LWIP_NETIF_API 00086 err_t tcpip_netifapi(struct netifapi_msg *netifapimsg); 00087 #if LWIP_TCPIP_CORE_LOCKING 00088 err_t tcpip_netifapi_lock(struct netifapi_msg *netifapimsg); 00089 #endif /* LWIP_TCPIP_CORE_LOCKING */ 00090 #endif /* LWIP_NETIF_API */ 00091 00092 err_t tcpip_callback_with_block(tcpip_callback_fn function, void *ctx, u8_t block); 00093 #define tcpip_callback(f, ctx) tcpip_callback_with_block(f, ctx, 1) 00094 00095 /* free pbufs or heap memory from another context without blocking */ 00096 err_t pbuf_free_callback(struct pbuf *p); 00097 err_t mem_free_callback(void *m); 00098 00099 err_t tcpip_timeout(u32_t msecs, sys_timeout_handler h, void *arg); 00100 err_t tcpip_untimeout(sys_timeout_handler h, void *arg); 00101 00102 enum tcpip_msg_type { 00103 #if LWIP_NETCONN 00104 TCPIP_MSG_API, 00105 #endif /* LWIP_NETCONN */ 00106 TCPIP_MSG_INPKT, 00107 #if LWIP_NETIF_API 00108 TCPIP_MSG_NETIFAPI, 00109 #endif /* LWIP_NETIF_API */ 00110 TCPIP_MSG_CALLBACK, 00111 TCPIP_MSG_TIMEOUT, 00112 TCPIP_MSG_UNTIMEOUT 00113 }; 00114 00115 struct tcpip_msg { 00116 enum tcpip_msg_type type; 00117 sys_sem_t *sem; 00118 union { 00119 #if LWIP_NETCONN 00120 struct api_msg *apimsg; 00121 #endif /* LWIP_NETCONN */ 00122 #if LWIP_NETIF_API 00123 struct netifapi_msg *netifapimsg; 00124 #endif /* LWIP_NETIF_API */ 00125 struct { 00126 struct pbuf *p; 00127 struct netif *netif; 00128 } inp; 00129 struct { 00130 tcpip_callback_fn function; 00131 void *ctx; 00132 } cb; 00133 struct { 00134 u32_t msecs; 00135 sys_timeout_handler h; 00136 void *arg; 00137 } tmo; 00138 } msg; 00139 }; 00140 00141 #ifdef __cplusplus 00142 } 00143 #endif 00144 00145 #endif /* !NO_SYS */ 00146 00147 #endif /* __LWIP_TCPIP_H__ */
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