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_H__
33 #define __LWIP_API_H__
34 
35 #include "lwip/opt.h"
36 #include "lwip/pbuf.h"
37 #include "lwip/sys.h"
38 
39 #include "lwip/ip.h"
40 
41 #include "lwip/raw.h"
42 #include "lwip/udp.h"
43 #include "lwip/tcp.h"
44 
45 #include "lwip/err.h"
46 
47 #define NETCONN_NOCOPY 0x00
48 #define NETCONN_COPY   0x01
49 
50 enum netconn_type {
51   NETCONN_TCP,
52   NETCONN_UDP,
53   NETCONN_UDPLITE,
54   NETCONN_UDPNOCHKSUM,
55   NETCONN_RAW
56 };
57 
58 enum netconn_state {
59   NETCONN_NONE,
60   NETCONN_WRITE,
61   NETCONN_ACCEPT,
62   NETCONN_RECV,
63   NETCONN_CONNECT,
64   NETCONN_CLOSE
65 };
66 
67 enum netconn_evt {
68   NETCONN_EVTRCVPLUS,
69   NETCONN_EVTRCVMINUS,
70   NETCONN_EVTSENDPLUS,
71   NETCONN_EVTSENDMINUS
72 };
73 
74 struct netbuf {
75   struct pbuf *p, *ptr;
76   struct ip_addr *fromaddr;
77   u16_t fromport;
78   err_t err;
79 };
80 
81 struct netconn {
82 	enum netconn_type type;
83 	enum netconn_state state;
84 	union {
85 		struct tcp_pcb *tcp;
86 		struct udp_pcb *udp;
87 		struct raw_pcb *raw;
88 	} pcb;
89 	err_t err;
90 	sys_sem sem;
91 	sys_mbox mbox;
92 	sys_mbox recvmbox;
93 	sys_mbox acceptmbox;
94 	u16 recvavail;
95 	s32 socket;
96 	void (*callback)(struct netconn *,enum netconn_evt,u32);
97 };
98 
99 #endif /* __LWIP_API_H__ */
100