--- /dev/null
+/*
+ * 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_API_MSG_H__
+#define __LWIP_API_MSG_H__
+
+#include "lwip/opt.h"
+
+#if LWIP_NETCONN /* don't build if not configured for use in lwipopts.h */
+
+#include "lwip/ip_addr.h"
+#include "lwip/err.h"
+#include "lwip/sys.h"
+#include "lwip/igmp.h"
+#include "lwip/api.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* IP addresses and port numbers are expected to be in
+ * the same byte order as in the corresponding pcb.
+ */
+/** This struct includes everything that is necessary to execute a function
+ for a netconn in another thread context (mainly used to process netconns
+ in the tcpip_thread context to be thread safe). */
+struct api_msg_msg {
+ /** The netconn which to process - always needed: it includes the semaphore
+ which is used to block the application thread until the function finished. */
+ struct netconn *conn;
+ /** Depending on the executed function, one of these union members is used */
+ union {
+ /** used for do_send */
+ struct netbuf *b;
+ /** used for do_newconn */
+ struct {
+ u8_t proto;
+ } n;
+ /** used for do_bind and do_connect */
+ struct {
+ struct ip_addr *ipaddr;
+ u16_t port;
+ } bc;
+ /** used for do_getaddr */
+ struct {
+ struct ip_addr *ipaddr;
+ u16_t *port;
+ u8_t local;
+ } ad;
+ /** used for do_write */
+ struct {
+ const void *dataptr;
+ int len;
+ u8_t apiflags;
+ } w;
+ /** used ofr do_recv */
+ struct {
+ u16_t len;
+ } r;
+#if LWIP_IGMP
+ /** used for do_join_leave_group */
+ struct {
+ struct ip_addr *multiaddr;
+ struct ip_addr *interface;
+ enum netconn_igmp join_or_leave;
+ } jl;
+#endif /* LWIP_IGMP */
+#if TCP_LISTEN_BACKLOG
+ struct {
+ u8_t backlog;
+ } lb;
+#endif /* TCP_LISTEN_BACKLOG */
+ } msg;
+};
+
+/** This struct contains a function to execute in another thread context and
+ a struct api_msg_msg that serves as an argument for this function.
+ This is passed to tcpip_apimsg to execute functions in tcpip_thread context. */
+struct api_msg {
+ /** function to execute in tcpip_thread context */
+ void (* function)(struct api_msg_msg *msg);
+ /** arguments for this function */
+ struct api_msg_msg msg;
+};
+
+#if LWIP_DNS
+/** As do_gethostbyname requires more arguments but doesn't require a netconn,
+ it has its own struct (to avoid struct api_msg getting bigger than necessary).
+ do_gethostbyname must be called using tcpip_callback instead of tcpip_apimsg
+ (see netconn_gethostbyname). */
+struct dns_api_msg {
+ /** Hostname to query or dotted IP address string */
+ const char *name;
+ /** Rhe resolved address is stored here */
+ struct ip_addr *addr;
+ /** This semaphore is posted when the name is resolved, the application thread
+ should wait on it. */
+ sys_sem_t sem;
+ /** Errors are given back here */
+ err_t *err;
+};
+#endif /* LWIP_DNS */
+
+void do_newconn ( struct api_msg_msg *msg);
+void do_delconn ( struct api_msg_msg *msg);
+void do_bind ( struct api_msg_msg *msg);
+void do_connect ( struct api_msg_msg *msg);
+void do_disconnect ( struct api_msg_msg *msg);
+void do_listen ( struct api_msg_msg *msg);
+void do_send ( struct api_msg_msg *msg);
+void do_recv ( struct api_msg_msg *msg);
+void do_write ( struct api_msg_msg *msg);
+void do_getaddr ( struct api_msg_msg *msg);
+void do_close ( struct api_msg_msg *msg);
+#if LWIP_IGMP
+void do_join_leave_group( struct api_msg_msg *msg);
+#endif /* LWIP_IGMP */
+
+#if LWIP_DNS
+void do_gethostbyname(void *arg);
+#endif /* LWIP_DNS */
+
+struct netconn* netconn_alloc(enum netconn_type t, netconn_callback callback);
+void netconn_free(struct netconn *conn);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LWIP_NETCONN */
+
+#endif /* __LWIP_API_MSG_H__ */
