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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [Common/] [ethernet/] [lwIP_130/] [src/] [include/] [lwip/] [netbuf.h] - Rev 610
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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_NETBUF_H__ #define __LWIP_NETBUF_H__ #include "lwip/opt.h" #include "lwip/pbuf.h" #ifdef __cplusplus extern "C" { #endif struct netbuf { struct pbuf *p, *ptr; struct ip_addr *addr; u16_t port; }; /* Network buffer functions: */ struct netbuf * netbuf_new (void); void netbuf_delete (struct netbuf *buf); void * netbuf_alloc (struct netbuf *buf, u16_t size); void netbuf_free (struct netbuf *buf); err_t netbuf_ref (struct netbuf *buf, const void *dataptr, u16_t size); void netbuf_chain (struct netbuf *head, struct netbuf *tail); u16_t netbuf_len (struct netbuf *buf); err_t netbuf_data (struct netbuf *buf, void **dataptr, u16_t *len); s8_t netbuf_next (struct netbuf *buf); void netbuf_first (struct netbuf *buf); #define netbuf_copy_partial(buf, dataptr, len, offset) \ pbuf_copy_partial((buf)->p, (dataptr), (len), (offset)) #define netbuf_copy(buf,dataptr,len) netbuf_copy_partial(buf, dataptr, len, 0) #define netbuf_len(buf) ((buf)->p->tot_len) #define netbuf_fromaddr(buf) ((buf)->addr) #define netbuf_fromport(buf) ((buf)->port) #ifdef __cplusplus } #endif #endif /* __LWIP_NETBUF_H__ */
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