FreeRTOS/Common/ethernet/lwIP_130/src/include/ipv4/lwip/inet_chksum.h

   1 /*
   2  * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without modification,
   6  * are permitted provided that the following conditions are met:
   7  *
   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.
  15  *
  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
  25  * OF SUCH DAMAGE.
  26  *
  27  * This file is part of the lwIP TCP/IP stack.
  28  *
  29  * Author: Adam Dunkels <adam@sics.se>
  30  *
  31  */
  32 #ifndef __LWIP_INET_CHKSUM_H__
  33 #define __LWIP_INET_CHKSUM_H__
  34
  35 #include "lwip/opt.h"
  36
  37 #include "lwip/pbuf.h"
  38 #include "lwip/ip_addr.h"
  39
  40 #ifdef __cplusplus
  41 extern "C" {
  42 #endif
  43
  44 u16_t inet_chksum(void *dataptr, u16_t len);
  45 u16_t inet_chksum_pbuf(struct pbuf *p);
  46 u16_t inet_chksum_pseudo(struct pbuf *p,
  47        struct ip_addr *src, struct ip_addr *dest,
  48        u8_t proto, u16_t proto_len);
  49 u16_t inet_chksum_pseudo_partial(struct pbuf *p,
  50        struct ip_addr *src, struct ip_addr *dest,
  51        u8_t proto, u16_t proto_len, u16_t chksum_len);
  52
  53 #ifdef __cplusplus
  54 }
  55 #endif
  56
  57 #endif /* __LWIP_INET_H__ */
  58