/* * 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_RAW_H__#define __LWIP_RAW_H__#include "lwip/opt.h"#if LWIP_RAW /* don't build if not configured for use in lwipopts.h */#include "lwip/pbuf.h"#include "lwip/inet.h"#include "lwip/ip.h"#include "lwip/ip_addr.h"#ifdef __cplusplusextern "C" {#endifstruct raw_pcb {/* Common members of all PCB types */  IP_PCB;  struct raw_pcb *next;  u8_t protocol;  /* receive callback function   * @param arg user supplied argument (raw_pcb.recv_arg)   * @param pcb the raw_pcb which received data   * @param p the packet buffer that was received   * @param addr the remote IP address from which the packet was received   * @return 1 if the packet was 'eaten' (aka. deleted),   *         0 if the packet lives on   * If returning 1, the callback is responsible for freeing the pbuf   * if it's not used any more.   */  u8_t (* recv)(void *arg, struct raw_pcb *pcb, struct pbuf *p,    struct ip_addr *addr);  /* user-supplied argument for the recv callback */  void *recv_arg;};/* The following functions is the application layer interface to the   RAW code. */struct raw_pcb * raw_new        (u8_t proto);void             raw_remove     (struct raw_pcb *pcb);err_t            raw_bind       (struct raw_pcb *pcb, struct ip_addr *ipaddr);err_t            raw_connect    (struct raw_pcb *pcb, struct ip_addr *ipaddr);void             raw_recv       (struct raw_pcb *pcb,                                 u8_t (* recv)(void *arg, struct raw_pcb *pcb,                                              struct pbuf *p,                                              struct ip_addr *addr),                                 void *recv_arg);err_t            raw_sendto     (struct raw_pcb *pcb, struct pbuf *p, struct ip_addr *ipaddr);err_t            raw_send       (struct raw_pcb *pcb, struct pbuf *p);/* The following functions are the lower layer interface to RAW. */u8_t             raw_input      (struct pbuf *p, struct netif *inp);#define raw_init() /* Compatibility define, not init needed. */#ifdef __cplusplus}#endif#endif /* LWIP_RAW */#endif /* __LWIP_RAW_H__ */