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
14 * derived from this software without specific prior written permission.
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
19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
27 * This file is part of the lwIP TCP/IP stack.
29 * Author: Adam Dunkels <adam@sics.se>
32 #ifndef __LWIP_NETBUF_H__
33 #define __LWIP_NETBUF_H__
36 #include "lwip/pbuf.h"
48 /* Network buffer functions: */
49 struct netbuf * netbuf_new (void);
50 void netbuf_delete (struct netbuf *buf);
51 void * netbuf_alloc (struct netbuf *buf, u16_t size);
52 void netbuf_free (struct netbuf *buf);
53 err_t netbuf_ref (struct netbuf *buf,
54 const void *dataptr, u16_t size);
55 void netbuf_chain (struct netbuf *head,
58 u16_t netbuf_len (struct netbuf *buf);
59 err_t netbuf_data (struct netbuf *buf,
60 void **dataptr, u16_t *len);
61 s8_t netbuf_next (struct netbuf *buf);
62 void netbuf_first (struct netbuf *buf);
65 #define netbuf_copy_partial(buf, dataptr, len, offset) \
66 pbuf_copy_partial((buf)->p, (dataptr), (len), (offset))
67 #define netbuf_copy(buf,dataptr,len) netbuf_copy_partial(buf, dataptr, len, 0)
68 #define netbuf_len(buf) ((buf)->p->tot_len)
69 #define netbuf_fromaddr(buf) ((buf)->addr)
70 #define netbuf_fromport(buf) ((buf)->port)
76 #endif /* __LWIP_NETBUF_H__ */