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