2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
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
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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
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20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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27 * This file is part of the lwIP TCP/IP stack.
29 * Author: Adam Dunkels <adam@sics.se>
32 #ifndef __LWIP_UDP_H__
33 #define __LWIP_UDP_H__
35 #include "lwip/arch.h"
37 #include "lwip/pbuf.h"
38 #include "lwip/inet.h"
44 PACK_STRUCT_FIELD(u16_t src);
45 PACK_STRUCT_FIELD(u16_t dest); /* src/dest UDP ports */
46 PACK_STRUCT_FIELD(u16_t len);
47 PACK_STRUCT_FIELD(u16_t chksum);
50 #define UDP_FLAGS_NOCHKSUM 0x01U
51 #define UDP_FLAGS_UDPLITE 0x02U
52 #define UDP_FLAGS_CONNECTED 0x04U
55 /* Common members of all PCB types */
58 /* Protocol specific PCB members */
63 u16_t local_port, remote_port;
67 void (* recv)(void *arg, struct udp_pcb *pcb, struct pbuf *p,
68 struct ip_addr *addr, u16_t port);
72 /* The following functions is the application layer interface to the
74 struct udp_pcb * udp_new (void);
75 void udp_remove (struct udp_pcb *pcb);
76 err_t udp_bind (struct udp_pcb *pcb, struct ip_addr *ipaddr,
78 err_t udp_connect (struct udp_pcb *pcb, struct ip_addr *ipaddr,
80 void udp_disconnect (struct udp_pcb *pcb);
81 void udp_recv (struct udp_pcb *pcb,
82 void (* recv)(void *arg, struct udp_pcb *upcb,
87 err_t udp_sendto (struct udp_pcb *pcb, struct pbuf *p, struct ip_addr *dst_ip, u16_t dst_port);
88 err_t udp_send (struct udp_pcb *pcb, struct pbuf *p);
90 #define udp_flags(pcb) ((pcb)->flags)
91 #define udp_setflags(pcb, f) ((pcb)->flags = (f))
93 /* The following functions are the lower layer interface to UDP. */
94 void udp_input (struct pbuf *p, struct netif *inp);
98 void udp_debug_print(struct udp_hdr *udphdr);
100 #define udp_debug_print(udphdr)
102 #endif /* __LWIP_UDP_H__ */