2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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3 * All rights reserved.
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5 * Redistribution and use in source and binary forms, with or without modification,
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6 * are permitted provided that the following conditions are met:
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8 * 1. Redistributions of source code must retain the above copyright notice,
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9 * this list of conditions and the following disclaimer.
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10 * 2. Redistributions in binary form must reproduce the above copyright notice,
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11 * this list of conditions and the following disclaimer in the documentation
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12 * and/or other materials provided with the distribution.
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13 * 3. The name of the author may not be used to endorse or promote products
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14 * derived from this software without specific prior written permission.
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16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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27 * This file is part of the lwIP TCP/IP stack.
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29 * Author: Adam Dunkels <adam@sics.se>
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32 #ifndef __LWIP_NETBUF_H__
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33 #define __LWIP_NETBUF_H__
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35 #include "lwip/opt.h"
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36 #include "lwip/pbuf.h"
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43 struct pbuf *p, *ptr;
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44 struct ip_addr *addr;
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48 /* Network buffer functions: */
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49 struct netbuf * netbuf_new (void);
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50 void netbuf_delete (struct netbuf *buf);
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51 void * netbuf_alloc (struct netbuf *buf, u16_t size);
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52 void netbuf_free (struct netbuf *buf);
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53 err_t netbuf_ref (struct netbuf *buf,
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54 const void *dataptr, u16_t size);
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55 void netbuf_chain (struct netbuf *head,
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56 struct netbuf *tail);
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58 u16_t netbuf_len (struct netbuf *buf);
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59 err_t netbuf_data (struct netbuf *buf,
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60 void **dataptr, u16_t *len);
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61 s8_t netbuf_next (struct netbuf *buf);
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62 void netbuf_first (struct netbuf *buf);
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65 #define netbuf_copy_partial(buf, dataptr, len, offset) \
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66 pbuf_copy_partial((buf)->p, (dataptr), (len), (offset))
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67 #define netbuf_copy(buf,dataptr,len) netbuf_copy_partial(buf, dataptr, len, 0)
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68 #define netbuf_len(buf) ((buf)->p->tot_len)
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69 #define netbuf_fromaddr(buf) ((buf)->addr)
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70 #define netbuf_fromport(buf) ((buf)->port)
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76 #endif /* __LWIP_NETBUF_H__ */
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