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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [lwIP_MCF5235_GCC/] [lwip/] [src/] [include/] [lwip/] [udp.h] - Blame information for rev 583

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1 583 jeremybenn
/*
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 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without modification,
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 * are permitted provided that the following conditions are met:
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 *
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 * 1. Redistributions of source code must retain the above copyright notice,
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 *    this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright notice,
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 *    this list of conditions and the following disclaimer in the documentation
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 *    and/or other materials provided with the distribution.
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 * 3. The name of the author may not be used to endorse or promote products
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 *    derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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 * OF SUCH DAMAGE.
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 *
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 * This file is part of the lwIP TCP/IP stack.
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 *
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 * Author: Adam Dunkels <adam@sics.se>
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 *
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 */
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#ifndef __LWIP_UDP_H__
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#define __LWIP_UDP_H__
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#include "lwip/arch.h"
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#include "lwip/pbuf.h"
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#include "lwip/inet.h"
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#include "lwip/ip.h"
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#define UDP_HLEN 8
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struct udp_hdr {
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  PACK_STRUCT_FIELD(u16_t src);
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  PACK_STRUCT_FIELD(u16_t dest);  /* src/dest UDP ports */
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  PACK_STRUCT_FIELD(u16_t len);
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  PACK_STRUCT_FIELD(u16_t chksum);
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} PACK_STRUCT_STRUCT;
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#define UDP_FLAGS_NOCHKSUM 0x01U
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#define UDP_FLAGS_UDPLITE  0x02U
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#define UDP_FLAGS_CONNECTED  0x04U
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struct udp_pcb {
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/* Common members of all PCB types */
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  IP_PCB;
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/* Protocol specific PCB members */
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  struct udp_pcb *next;
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  u8_t flags;
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  u16_t local_port, remote_port;
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  u16_t chksum_len;
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  void (* recv)(void *arg, struct udp_pcb *pcb, struct pbuf *p,
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    struct ip_addr *addr, u16_t port);
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  void *recv_arg;
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};
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/* The following functions is the application layer interface to the
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   UDP code. */
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struct udp_pcb * udp_new        (void);
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void             udp_remove     (struct udp_pcb *pcb);
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err_t            udp_bind       (struct udp_pcb *pcb, struct ip_addr *ipaddr,
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                 u16_t port);
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err_t            udp_connect    (struct udp_pcb *pcb, struct ip_addr *ipaddr,
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                 u16_t port);
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void             udp_disconnect    (struct udp_pcb *pcb);
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void             udp_recv       (struct udp_pcb *pcb,
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         void (* recv)(void *arg, struct udp_pcb *upcb,
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                 struct pbuf *p,
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                 struct ip_addr *addr,
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                 u16_t port),
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         void *recv_arg);
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err_t            udp_sendto     (struct udp_pcb *pcb, struct pbuf *p, struct ip_addr *dst_ip, u16_t dst_port);
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err_t            udp_send       (struct udp_pcb *pcb, struct pbuf *p);
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#define          udp_flags(pcb)  ((pcb)->flags)
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#define          udp_setflags(pcb, f)  ((pcb)->flags = (f))
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/* The following functions are the lower layer interface to UDP. */
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void             udp_input      (struct pbuf *p, struct netif *inp);
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void             udp_init       (void);
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#if UDP_DEBUG
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void udp_debug_print(struct udp_hdr *udphdr);
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#else
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#define udp_debug_print(udphdr)
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#endif
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#endif /* __LWIP_UDP_H__ */
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