source: UsbWattMeter/trunk/lwip-1.4.1/src/include/lwip/api_msg.h@ 164

Last change on this file since 164 was 164, checked in by coas-nagasima, 6 years ago

TOPPERS/ECNLサンプルアプリ「USB充電器電力計」を追加

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
  • Property svn:mime-type set to text/x-chdr
File size: 5.8 KB
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1/*
2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
25 * OF SUCH DAMAGE.
26 *
27 * This file is part of the lwIP TCP/IP stack.
28 *
29 * Author: Adam Dunkels <adam@sics.se>
30 *
31 */
32#ifndef __LWIP_API_MSG_H__
33#define __LWIP_API_MSG_H__
34
35#include "lwip/opt.h"
36
37#if LWIP_NETCONN /* don't build if not configured for use in lwipopts.h */
38
39#include <stddef.h> /* for size_t */
40
41#include "lwip/ip_addr.h"
42#include "lwip/err.h"
43#include "lwip/sys.h"
44#include "lwip/igmp.h"
45#include "lwip/api.h"
46
47#ifdef __cplusplus
48extern "C" {
49#endif
50
51/* For the netconn API, these values are use as a bitmask! */
52#define NETCONN_SHUT_RD 1
53#define NETCONN_SHUT_WR 2
54#define NETCONN_SHUT_RDWR (NETCONN_SHUT_RD | NETCONN_SHUT_WR)
55
56/* IP addresses and port numbers are expected to be in
57 * the same byte order as in the corresponding pcb.
58 */
59/** This struct includes everything that is necessary to execute a function
60 for a netconn in another thread context (mainly used to process netconns
61 in the tcpip_thread context to be thread safe). */
62struct api_msg_msg {
63 /** The netconn which to process - always needed: it includes the semaphore
64 which is used to block the application thread until the function finished. */
65 struct netconn *conn;
66 /** The return value of the function executed in tcpip_thread. */
67 err_t err;
68 /** Depending on the executed function, one of these union members is used */
69 union {
70 /** used for do_send */
71 struct netbuf *b;
72 /** used for do_newconn */
73 struct {
74 u8_t proto;
75 } n;
76 /** used for do_bind and do_connect */
77 struct {
78 ip_addr_t *ipaddr;
79 u16_t port;
80 } bc;
81 /** used for do_getaddr */
82 struct {
83 ip_addr_t *ipaddr;
84 u16_t *port;
85 u8_t local;
86 } ad;
87 /** used for do_write */
88 struct {
89 const void *dataptr;
90 size_t len;
91 u8_t apiflags;
92#if LWIP_SO_SNDTIMEO
93 u32_t time_started;
94#endif /* LWIP_SO_SNDTIMEO */
95 } w;
96 /** used for do_recv */
97 struct {
98 u32_t len;
99 } r;
100 /** used for do_close (/shutdown) */
101 struct {
102 u8_t shut;
103 } sd;
104#if LWIP_IGMP
105 /** used for do_join_leave_group */
106 struct {
107 ip_addr_t *multiaddr;
108 ip_addr_t *netif_addr;
109 enum netconn_igmp join_or_leave;
110 } jl;
111#endif /* LWIP_IGMP */
112#if TCP_LISTEN_BACKLOG
113 struct {
114 u8_t backlog;
115 } lb;
116#endif /* TCP_LISTEN_BACKLOG */
117 } msg;
118};
119
120/** This struct contains a function to execute in another thread context and
121 a struct api_msg_msg that serves as an argument for this function.
122 This is passed to tcpip_apimsg to execute functions in tcpip_thread context. */
123struct api_msg {
124 /** function to execute in tcpip_thread context */
125 void (* function)(struct api_msg_msg *msg);
126 /** arguments for this function */
127 struct api_msg_msg msg;
128};
129
130#if LWIP_DNS
131/** As do_gethostbyname requires more arguments but doesn't require a netconn,
132 it has its own struct (to avoid struct api_msg getting bigger than necessary).
133 do_gethostbyname must be called using tcpip_callback instead of tcpip_apimsg
134 (see netconn_gethostbyname). */
135struct dns_api_msg {
136 /** Hostname to query or dotted IP address string */
137 const char *name;
138 /** Rhe resolved address is stored here */
139 ip_addr_t *addr;
140 /** This semaphore is posted when the name is resolved, the application thread
141 should wait on it. */
142 sys_sem_t *sem;
143 /** Errors are given back here */
144 err_t *err;
145};
146#endif /* LWIP_DNS */
147
148void do_newconn ( struct api_msg_msg *msg);
149void do_delconn ( struct api_msg_msg *msg);
150void do_bind ( struct api_msg_msg *msg);
151void do_connect ( struct api_msg_msg *msg);
152void do_disconnect ( struct api_msg_msg *msg);
153void do_listen ( struct api_msg_msg *msg);
154void do_send ( struct api_msg_msg *msg);
155void do_recv ( struct api_msg_msg *msg);
156void do_write ( struct api_msg_msg *msg);
157void do_getaddr ( struct api_msg_msg *msg);
158void do_close ( struct api_msg_msg *msg);
159void do_shutdown ( struct api_msg_msg *msg);
160#if LWIP_IGMP
161void do_join_leave_group( struct api_msg_msg *msg);
162#endif /* LWIP_IGMP */
163
164#if LWIP_DNS
165void do_gethostbyname(void *arg);
166#endif /* LWIP_DNS */
167
168struct netconn* netconn_alloc(enum netconn_type t, netconn_callback callback);
169void netconn_free(struct netconn *conn);
170
171#ifdef __cplusplus
172}
173#endif
174
175#endif /* LWIP_NETCONN */
176
177#endif /* __LWIP_API_MSG_H__ */
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