1/** 2 * @file 3 * Functions to sync with TCPIP thread 4 */ 5 6/* 7 * Copyright (c) 2001-2004 Swedish Institute of Computer Science. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without modification, 11 * are permitted provided that the following conditions are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright notice, 14 * this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright notice, 16 * this list of conditions and the following disclaimer in the documentation 17 * and/or other materials provided with the distribution. 18 * 3. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 22 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 23 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 24 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 26 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 29 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 30 * OF SUCH DAMAGE. 31 * 32 * This file is part of the lwIP TCP/IP stack. 33 * 34 * Author: Adam Dunkels <adam@sics.se> 35 * 36 */ 37#ifndef LWIP_HDR_TCPIP_H 38#define LWIP_HDR_TCPIP_H 39 40#include "lwip/opt.h" 41 42#if !NO_SYS /* don't build if not configured for use in lwipopts.h */ 43 44#include "lwip/err.h" 45#include "lwip/timeouts.h" 46#include "lwip/netif.h" 47 48#ifdef __cplusplus 49extern "C" { 50#endif 51 52#if LWIP_TCPIP_CORE_LOCKING 53/** The global semaphore to lock the stack. */ 54extern sys_mutex_t lock_tcpip_core; 55/** Lock lwIP core mutex (needs @ref LWIP_TCPIP_CORE_LOCKING 1) */ 56#define LOCK_TCPIP_CORE() sys_mutex_lock(&lock_tcpip_core) 57/** Unlock lwIP core mutex (needs @ref LWIP_TCPIP_CORE_LOCKING 1) */ 58#define UNLOCK_TCPIP_CORE() sys_mutex_unlock(&lock_tcpip_core) 59#else /* LWIP_TCPIP_CORE_LOCKING */ 60#define LOCK_TCPIP_CORE() 61#define UNLOCK_TCPIP_CORE() 62#endif /* LWIP_TCPIP_CORE_LOCKING */ 63 64struct pbuf; 65struct netif; 66 67/** Function prototype for the init_done function passed to tcpip_init */ 68typedef void (*tcpip_init_done_fn)(void *arg); 69/** Function prototype for functions passed to tcpip_callback() */ 70typedef void (*tcpip_callback_fn)(void *ctx); 71 72/* Forward declarations */ 73struct tcpip_callback_msg; 74 75void tcpip_init(tcpip_init_done_fn tcpip_init_done, void *arg); 76 77err_t tcpip_inpkt(struct pbuf *p, struct netif *inp, netif_input_fn input_fn); 78err_t tcpip_input(struct pbuf *p, struct netif *inp); 79 80err_t tcpip_callback_with_block(tcpip_callback_fn function, void *ctx, u8_t block); 81/** 82 * @ingroup lwip_os 83 * @see tcpip_callback_with_block 84 */ 85#define tcpip_callback(f, ctx) tcpip_callback_with_block(f, ctx, 1) 86 87struct tcpip_callback_msg* tcpip_callbackmsg_new(tcpip_callback_fn function, void *ctx); 88void tcpip_callbackmsg_delete(struct tcpip_callback_msg* msg); 89err_t tcpip_trycallback(struct tcpip_callback_msg* msg); 90 91/* free pbufs or heap memory from another context without blocking */ 92err_t pbuf_free_callback(struct pbuf *p); 93err_t mem_free_callback(void *m); 94 95#if LWIP_TCPIP_TIMEOUT && LWIP_TIMERS 96err_t tcpip_timeout(u32_t msecs, sys_timeout_handler h, void *arg); 97err_t tcpip_untimeout(sys_timeout_handler h, void *arg); 98#endif /* LWIP_TCPIP_TIMEOUT && LWIP_TIMERS */ 99 100#ifdef __cplusplus 101} 102#endif 103 104#endif /* !NO_SYS */ 105 106#endif /* LWIP_HDR_TCPIP_H */ 107