160 lines
5.0 KiB
C
160 lines
5.0 KiB
C
/*
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* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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*/
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#ifndef __LWIP_TCPIP_H__
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#define __LWIP_TCPIP_H__
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#include "lwip/opt.h"
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#if !NO_SYS /* don't build if not configured for use in lwipopts.h */
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#include "lwip/api_msg.h"
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#include "lwip/netifapi.h"
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#include "lwip/pbuf.h"
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#include "lwip/api.h"
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#include "lwip/sys.h"
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#include "lwip/timers.h"
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#include "lwip/netif.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** Define this to something that triggers a watchdog. This is called from
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* tcpip_thread after processing a message. */
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#ifndef LWIP_TCPIP_THREAD_ALIVE
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#define LWIP_TCPIP_THREAD_ALIVE()
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#endif
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#if LWIP_TCPIP_CORE_LOCKING
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/** The global semaphore to lock the stack. */
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extern sys_mutex_t lock_tcpip_core;
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#define LOCK_TCPIP_CORE() sys_mutex_lock(&lock_tcpip_core)
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#define UNLOCK_TCPIP_CORE() sys_mutex_unlock(&lock_tcpip_core)
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#define TCPIP_APIMSG(m) tcpip_apimsg_lock(m)
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#define TCPIP_APIMSG_ACK(m)
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#define TCPIP_NETIFAPI(m) tcpip_netifapi_lock(m)
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#define TCPIP_NETIFAPI_ACK(m)
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#else /* LWIP_TCPIP_CORE_LOCKING */
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#define LOCK_TCPIP_CORE()
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#define UNLOCK_TCPIP_CORE()
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#define TCPIP_APIMSG(m) tcpip_apimsg(m)
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#define TCPIP_APIMSG_ACK(m) sys_sem_signal(&m->conn->op_completed)
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#define TCPIP_NETIFAPI(m) tcpip_netifapi(m)
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#define TCPIP_NETIFAPI_ACK(m) sys_sem_signal(&m->sem)
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#endif /* LWIP_TCPIP_CORE_LOCKING */
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/** Function prototype for the init_done function passed to tcpip_init */
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typedef void (*tcpip_init_done_fn)(void *arg);
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/** Function prototype for functions passed to tcpip_callback() */
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typedef void (*tcpip_callback_fn)(void *ctx);
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void tcpip_init(tcpip_init_done_fn tcpip_init_done, void *arg);
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#if LWIP_NETCONN
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err_t tcpip_apimsg(struct api_msg *apimsg);
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#if LWIP_TCPIP_CORE_LOCKING
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err_t tcpip_apimsg_lock(struct api_msg *apimsg);
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#endif /* LWIP_TCPIP_CORE_LOCKING */
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#endif /* LWIP_NETCONN */
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err_t tcpip_input(struct pbuf *p, struct netif *inp);
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#if LWIP_NETIF_API
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err_t tcpip_netifapi(struct netifapi_msg *netifapimsg);
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#if LWIP_TCPIP_CORE_LOCKING
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err_t tcpip_netifapi_lock(struct netifapi_msg *netifapimsg);
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#endif /* LWIP_TCPIP_CORE_LOCKING */
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#endif /* LWIP_NETIF_API */
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err_t tcpip_callback_with_block(tcpip_callback_fn function, void *ctx, u8_t block);
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#define tcpip_callback(f, ctx) tcpip_callback_with_block(f, ctx, 1)
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/* free pbufs or heap memory from another context without blocking */
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err_t pbuf_free_callback(struct pbuf *p);
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err_t mem_free_callback(void *m);
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#if LWIP_TCPIP_TIMEOUT
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err_t tcpip_timeout(u32_t msecs, sys_timeout_handler h, void *arg);
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err_t tcpip_untimeout(sys_timeout_handler h, void *arg);
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#endif /* LWIP_TCPIP_TIMEOUT */
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enum tcpip_msg_type {
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#if LWIP_NETCONN
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TCPIP_MSG_API,
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#endif /* LWIP_NETCONN */
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TCPIP_MSG_INPKT,
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#if LWIP_NETIF_API
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TCPIP_MSG_NETIFAPI,
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#endif /* LWIP_NETIF_API */
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#if LWIP_TCPIP_TIMEOUT
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TCPIP_MSG_TIMEOUT,
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TCPIP_MSG_UNTIMEOUT,
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#endif /* LWIP_TCPIP_TIMEOUT */
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TCPIP_MSG_CALLBACK
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};
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struct tcpip_msg {
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enum tcpip_msg_type type;
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sys_sem_t *sem;
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union {
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#if LWIP_NETCONN
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struct api_msg *apimsg;
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#endif /* LWIP_NETCONN */
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#if LWIP_NETIF_API
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struct netifapi_msg *netifapimsg;
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#endif /* LWIP_NETIF_API */
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struct {
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struct pbuf *p;
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struct netif *netif;
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} inp;
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struct {
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tcpip_callback_fn function;
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void *ctx;
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} cb;
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#if LWIP_TCPIP_TIMEOUT
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struct {
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u32_t msecs;
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sys_timeout_handler h;
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void *arg;
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} tmo;
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#endif /* LWIP_TCPIP_TIMEOUT */
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} msg;
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};
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#ifdef __cplusplus
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}
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#endif
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#endif /* !NO_SYS */
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#endif /* __LWIP_TCPIP_H__ */
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