ReactOS 0.4.15-dev-8219-ge8b88cf
udp.h
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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_UDP_H__
33#define __LWIP_UDP_H__
34
35#include "lwip/opt.h"
36
37#if LWIP_UDP /* don't build if not configured for use in lwipopts.h */
38
39#include "lwip/pbuf.h"
40#include "lwip/netif.h"
41#include "lwip/ip_addr.h"
42#include "lwip/ip.h"
43
44#ifdef __cplusplus
45extern "C" {
46#endif
47
48#define UDP_HLEN 8
49
50/* Fields are (of course) in network byte order. */
51#ifdef PACK_STRUCT_USE_INCLUDES
52# include "arch/bpstruct.h"
53#endif
55struct udp_hdr {
57 PACK_STRUCT_FIELD(u16_t dest); /* src/dest UDP ports */
62#ifdef PACK_STRUCT_USE_INCLUDES
63# include "arch/epstruct.h"
64#endif
65
66#define UDP_FLAGS_NOCHKSUM 0x01U
67#define UDP_FLAGS_UDPLITE 0x02U
68#define UDP_FLAGS_CONNECTED 0x04U
69#define UDP_FLAGS_MULTICAST_LOOP 0x08U
70
71struct udp_pcb;
72
87typedef void (*udp_recv_fn)(void *arg, struct udp_pcb *pcb, struct pbuf *p,
89
90
91struct udp_pcb {
92/* Common members of all PCB types */
93 IP_PCB;
94
95/* Protocol specific PCB members */
96
97 struct udp_pcb *next;
98
99 u8_t flags;
101 u16_t local_port, remote_port;
102
103#if LWIP_IGMP
105 ip_addr_t multicast_ip;
106#endif /* LWIP_IGMP */
107
108#if LWIP_UDPLITE
110 u16_t chksum_len_rx, chksum_len_tx;
111#endif /* LWIP_UDPLITE */
112
114 udp_recv_fn recv;
116 void *recv_arg;
117};
118/* udp_pcbs export for exernal reference (e.g. SNMP agent) */
119extern struct udp_pcb *udp_pcbs;
120
121/* The following functions is the application layer interface to the
122 UDP code. */
123struct udp_pcb * udp_new (void);
124void udp_remove (struct udp_pcb *pcb);
125err_t udp_bind (struct udp_pcb *pcb, ip_addr_t *ipaddr,
126 u16_t port);
127err_t udp_connect (struct udp_pcb *pcb, ip_addr_t *ipaddr,
128 u16_t port);
129void udp_disconnect (struct udp_pcb *pcb);
130void udp_recv (struct udp_pcb *pcb, udp_recv_fn recv,
131 void *recv_arg);
132err_t udp_sendto_if (struct udp_pcb *pcb, struct pbuf *p,
133 ip_addr_t *dst_ip, u16_t dst_port,
134 struct netif *netif);
135err_t udp_sendto (struct udp_pcb *pcb, struct pbuf *p,
136 ip_addr_t *dst_ip, u16_t dst_port);
137err_t udp_send (struct udp_pcb *pcb, struct pbuf *p);
138
139#if LWIP_CHECKSUM_ON_COPY
140err_t udp_sendto_if_chksum(struct udp_pcb *pcb, struct pbuf *p,
141 ip_addr_t *dst_ip, u16_t dst_port,
142 struct netif *netif, u8_t have_chksum,
143 u16_t chksum);
144err_t udp_sendto_chksum(struct udp_pcb *pcb, struct pbuf *p,
145 ip_addr_t *dst_ip, u16_t dst_port,
146 u8_t have_chksum, u16_t chksum);
147err_t udp_send_chksum(struct udp_pcb *pcb, struct pbuf *p,
148 u8_t have_chksum, u16_t chksum);
149#endif /* LWIP_CHECKSUM_ON_COPY */
150
151#define udp_flags(pcb) ((pcb)->flags)
152#define udp_setflags(pcb, f) ((pcb)->flags = (f))
153
154/* The following functions are the lower layer interface to UDP. */
155void udp_input (struct pbuf *p, struct netif *inp);
156
157void udp_init (void);
158
159#if UDP_DEBUG
160void udp_debug_print(struct udp_hdr *udphdr);
161#else
162#define udp_debug_print(udphdr)
163#endif
164
165#ifdef __cplusplus
166}
167#endif
168
169#endif /* LWIP_UDP */
170
171#endif /* __LWIP_UDP_H__ */
#define PACK_STRUCT_END
Definition: arch.h:64
#define PACK_STRUCT_BEGIN
Definition: arch.h:60
#define PACK_STRUCT_FIELD(x)
Definition: arch.h:68
USHORT port
Definition: uri.c:228
INT WSAAPI recv(IN SOCKET s, OUT CHAR FAR *buf, IN INT len, IN INT flags)
Definition: recv.c:23
#define PACK_STRUCT_STRUCT
Definition: cc.h:59
unsigned char u8_t
Definition: cc.h:23
unsigned short u16_t
Definition: cc.h:24
#define IP_PCB
Definition: ip.h:76
s8_t err_t
Definition: err.h:47
GLenum src
Definition: glext.h:6340
GLbitfield flags
Definition: glext.h:7161
GLenum const GLvoid * addr
Definition: glext.h:9621
GLfloat GLfloat p
Definition: glext.h:8902
GLenum GLsizei len
Definition: glext.h:6722
static u32_t chksum(void *dataptr, u16_t len)
Definition: inet6.c:55
typedefPACK_STRUCT_END struct ip_addr ip_addr_t
Definition: ip_addr.h:64
static char * dest
Definition: rtl.c:135
static unsigned __int64 next
Definition: rand_nt.c:6
Definition: netif.h:136
Definition: pbuf.h:79
Definition: dhcpd.h:79
void * arg
Definition: msvc.h:10