udp.h
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- /*
- * 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_UDP_H__
- #define __LWIP_UDP_H__
- #include "lwip/arch.h"
- #include "lwip/pbuf.h"
- #include "lwip/inet.h"
- #include "lwip/ip.h"
- #define UDP_HLEN 8
- struct udp_hdr {
- PACK_STRUCT_FIELD(u16_t src);
- PACK_STRUCT_FIELD(u16_t dest); /* src/dest UDP ports */
- PACK_STRUCT_FIELD(u16_t len);
- PACK_STRUCT_FIELD(u16_t chksum);
- } PACK_STRUCT_STRUCT;
- #define UDP_FLAGS_NOCHKSUM 0x01U
- #define UDP_FLAGS_UDPLITE 0x02U
- #define UDP_FLAGS_CONNECTED 0x04U
- struct udp_pcb {
- /* Common members of all PCB types */
- IP_PCB;
- /* Protocol specific PCB members */
- struct udp_pcb *next;
- u8_t flags;
- u16_t local_port, remote_port;
-
- u16_t chksum_len;
- /*
- *modified by skier 2006.01.30
- */
- /*
- void (* recv)(void *arg, struct udp_pcb *pcb, struct pbuf *p,
- struct ip_addr *addr, u16_t port);
- void *recv_arg; */
- void (* recv)(struct pbuf *p);
- };
- /* The following functions is the application layer interface to the
- UDP code. */
- struct udp_pcb * udp_new (void);
- void udp_remove (struct udp_pcb *pcb);
- err_t udp_bind (struct udp_pcb *pcb, struct ip_addr *ipaddr,
- u16_t port);
- err_t udp_connect (struct udp_pcb *pcb, struct ip_addr *ipaddr,
- u16_t port);
- void udp_disconnect (struct udp_pcb *pcb);
- void udp_recv (struct udp_pcb *pcb,
- void (* recv)(void *arg, struct udp_pcb *upcb,
- struct pbuf *p,
- struct ip_addr *addr,
- u16_t port),
- void *recv_arg);
- err_t udp_sendto (struct udp_pcb *pcb, struct pbuf *p, struct ip_addr *dst_ip, u16_t dst_port);
- err_t udp_send (struct udp_pcb *pcb, struct pbuf *p);
- #define udp_flags(pcb) ((pcb)->flags)
- #define udp_setflags(pcb, f) ((pcb)->flags = (f))
- /* The following functions are the lower layer interface to UDP. */
- void udp_input (struct pbuf *p, struct netif *inp);
- void udp_init (void);
- #if UDP_DEBUG
- int udp_debug_print(struct udp_hdr *udphdr);
- #else
- #define udp_debug_print(udphdr)
- #endif
- #endif /* __LWIP_UDP_H__ */