Joshua Wise's Git repositories - netwatch.git/blob - lwip/src/include/ipv4/lwip/inet

1 /*

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__

35 #include "lwip/opt.h"

37 #include "lwip/pbuf.h"

38 #include "lwip/ip_addr.h"

40 #ifdef __cplusplus

41 extern "C" {

42 #endif

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);

53 #ifdef __cplusplus

54 }

55 #endif

57 #endif /* __LWIP_INET_H__ */