| /* |
| * 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) |
| #ifdef LWIP_DEBUG |
| #define TCIP_APIMSG_SET_ERR(m, e) (m)->msg.err = e /* catch functions that don't set err */ |
| #else |
| #define TCIP_APIMSG_SET_ERR(m, e) |
| #endif |
| #define TCPIP_APIMSG_NOERR(m,f) do { \ |
| TCIP_APIMSG_SET_ERR(m, ERR_VAL); \ |
| LOCK_TCPIP_CORE(); \ |
| f(&((m)->msg)); \ |
| UNLOCK_TCPIP_CORE(); \ |
| } while(0) |
| #define TCPIP_APIMSG(m,f,e) do { \ |
| TCPIP_APIMSG_NOERR(m,f); \ |
| (e) = (m)->msg.err; \ |
| } while(0) |
| #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_NOERR(m,f) do { (m)->function = f; tcpip_apimsg(m); } while(0) |
| #define TCPIP_APIMSG(m,f,e) do { (m)->function = f; (e) = tcpip_apimsg(m); } while(0) |
| #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); |
| typedef void (*tcpip_will_finish_fn)(void *arg); |
| /** Function prototype for functions passed to tcpip_callback() */ |
| typedef void (*tcpip_callback_fn)(void *ctx); |
| |
| /* Forward declarations */ |
| struct tcpip_callback_msg; |
| |
| void tcpip_init(tcpip_init_done_fn tcpip_init_done, void *arg); |
| err_t tcpip_finish(tcpip_will_finish_fn tcpip_will_finish, void *arg); |
| |
| #if LWIP_NETCONN |
| err_t tcpip_apimsg(struct api_msg *apimsg); |
| #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) |
| |
| struct tcpip_callback_msg* tcpip_callbackmsg_new(tcpip_callback_fn function, void *ctx); |
| void tcpip_callbackmsg_delete(struct tcpip_callback_msg* msg); |
| err_t tcpip_trycallback(struct tcpip_callback_msg* msg); |
| |
| /* 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, |
| TCPIP_MSG_CALLBACK_STATIC, |
| TCPIP_MSG_FINISH |
| }; |
| |
| 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__ */ |