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