ReactOS  0.4.14-dev-317-g96040ec
inet_chksum.h
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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 
41 #ifndef SWAP_BYTES_IN_WORD
42 #if LWIP_PLATFORM_BYTESWAP && (BYTE_ORDER == LITTLE_ENDIAN)
43 /* little endian and PLATFORM_BYTESWAP defined */
44 #define SWAP_BYTES_IN_WORD(w) LWIP_PLATFORM_HTONS(w)
45 #else /* LWIP_PLATFORM_BYTESWAP && (BYTE_ORDER == LITTLE_ENDIAN) */
46 /* can't use htons on big endian (or PLATFORM_BYTESWAP not defined)... */
47 #define SWAP_BYTES_IN_WORD(w) (((w) & 0xff) << 8) | (((w) & 0xff00) >> 8)
48 #endif /* LWIP_PLATFORM_BYTESWAP && (BYTE_ORDER == LITTLE_ENDIAN)*/
49 #endif /* SWAP_BYTES_IN_WORD */
50 
52 #ifndef FOLD_U32T
53 #define FOLD_U32T(u) (((u) >> 16) + ((u) & 0x0000ffffUL))
54 #endif
55 
56 #if LWIP_CHECKSUM_ON_COPY
57 
59 #ifndef LWIP_CHKSUM_COPY
60 #define LWIP_CHKSUM_COPY(dst, src, len) lwip_chksum_copy(dst, src, len)
61 #ifndef LWIP_CHKSUM_COPY_ALGORITHM
62 #define LWIP_CHKSUM_COPY_ALGORITHM 1
63 #endif /* LWIP_CHKSUM_COPY_ALGORITHM */
64 #endif /* LWIP_CHKSUM_COPY */
65 #else /* LWIP_CHECKSUM_ON_COPY */
66 #define LWIP_CHKSUM_COPY_ALGORITHM 0
67 #endif /* LWIP_CHECKSUM_ON_COPY */
68 
69 #ifdef __cplusplus
70 extern "C" {
71 #endif
72 
74 u16_t inet_chksum_pbuf(struct pbuf *p);
77  u8_t proto, u16_t proto_len);
80  u8_t proto, u16_t proto_len, u16_t chksum_len);
81 #if LWIP_CHKSUM_COPY_ALGORITHM
82 u16_t lwip_chksum_copy(void *dst, const void *src, u16_t len);
83 #endif /* LWIP_CHKSUM_COPY_ALGORITHM */
84 
85 #ifdef __cplusplus
86 }
87 #endif
88 
89 #endif /* __LWIP_INET_H__ */
90 
u16_t inet_chksum_pbuf(struct pbuf *p)
Definition: inet_chksum.c:409
u16_t inet_chksum_pseudo_partial(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest, u8_t proto, u16_t proto_len, u16_t chksum_len)
Definition: inet_chksum.c:332
typedefPACK_STRUCT_END struct ip_addr ip_addr_t
Definition: ip_addr.h:64
u16_t inet_chksum(void *dataptr, u16_t len)
Definition: inet_chksum.c:396
Definition: pbuf.h:79
u16_t inet_chksum_pseudo(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest, u8_t proto, u16_t proto_len)
Definition: inet_chksum.c:272
GLenum GLsizei len
Definition: glext.h:6722
GLenum src
Definition: glext.h:6340
GLenum GLenum dst
Definition: glext.h:6340
unsigned char u8_t
Definition: cc.h:23
int const JOCTET * dataptr
Definition: jpeglib.h:1027
static char * dest
Definition: rtl.c:135
unsigned short u16_t
Definition: cc.h:24
GLfloat GLfloat p
Definition: glext.h:8902