Rod Coleman / NetServSB2

Netservices modded to read fragmented HTTP respsonse/payload from special purpose server - 180 bytes only

lwip/include/ipv4/lwip/inet_chksum.h@0:850eacf3e945, 2011-09-08 (annotated)

Committer:
RodColeman
Date:
Thu Sep 08 10:48:09 2011 +0000
Revision:
0:850eacf3e945
revised fixed length to 178 bytes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
RodColeman 0:850eacf3e945 1 /*
RodColeman 0:850eacf3e945 2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
RodColeman 0:850eacf3e945 3 * All rights reserved.
RodColeman 0:850eacf3e945 4 *
RodColeman 0:850eacf3e945 5 * Redistribution and use in source and binary forms, with or without modification,
RodColeman 0:850eacf3e945 6 * are permitted provided that the following conditions are met:
RodColeman 0:850eacf3e945 7 *
RodColeman 0:850eacf3e945 8 * 1. Redistributions of source code must retain the above copyright notice,
RodColeman 0:850eacf3e945 9 * this list of conditions and the following disclaimer.
RodColeman 0:850eacf3e945 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
RodColeman 0:850eacf3e945 11 * this list of conditions and the following disclaimer in the documentation
RodColeman 0:850eacf3e945 12 * and/or other materials provided with the distribution.
RodColeman 0:850eacf3e945 13 * 3. The name of the author may not be used to endorse or promote products
RodColeman 0:850eacf3e945 14 * derived from this software without specific prior written permission.
RodColeman 0:850eacf3e945 15 *
RodColeman 0:850eacf3e945 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
RodColeman 0:850eacf3e945 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
RodColeman 0:850eacf3e945 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
RodColeman 0:850eacf3e945 19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
RodColeman 0:850eacf3e945 20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
RodColeman 0:850eacf3e945 21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
RodColeman 0:850eacf3e945 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
RodColeman 0:850eacf3e945 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
RodColeman 0:850eacf3e945 24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
RodColeman 0:850eacf3e945 25 * OF SUCH DAMAGE.
RodColeman 0:850eacf3e945 26 *
RodColeman 0:850eacf3e945 27 * This file is part of the lwIP TCP/IP stack.
RodColeman 0:850eacf3e945 28 *
RodColeman 0:850eacf3e945 29 * Author: Adam Dunkels <adam@sics.se>
RodColeman 0:850eacf3e945 30 *
RodColeman 0:850eacf3e945 31 */
RodColeman 0:850eacf3e945 32 #ifndef __LWIP_INET_CHKSUM_H__
RodColeman 0:850eacf3e945 33 #define __LWIP_INET_CHKSUM_H__
RodColeman 0:850eacf3e945 34
RodColeman 0:850eacf3e945 35 #include "lwip/opt.h"
RodColeman 0:850eacf3e945 36
RodColeman 0:850eacf3e945 37 #include "lwip/pbuf.h"
RodColeman 0:850eacf3e945 38 #include "lwip/ip_addr.h"
RodColeman 0:850eacf3e945 39
RodColeman 0:850eacf3e945 40 /** Swap the bytes in an u16_t: much like htons() for little-endian */
RodColeman 0:850eacf3e945 41 #ifndef SWAP_BYTES_IN_WORD
RodColeman 0:850eacf3e945 42 #if LWIP_PLATFORM_BYTESWAP && (BYTE_ORDER == LITTLE_ENDIAN)
RodColeman 0:850eacf3e945 43 /* little endian and PLATFORM_BYTESWAP defined */
RodColeman 0:850eacf3e945 44 #define SWAP_BYTES_IN_WORD(w) LWIP_PLATFORM_HTONS(w)
RodColeman 0:850eacf3e945 45 #else /* LWIP_PLATFORM_BYTESWAP && (BYTE_ORDER == LITTLE_ENDIAN) */
RodColeman 0:850eacf3e945 46 /* can't use htons on big endian (or PLATFORM_BYTESWAP not defined)... */
RodColeman 0:850eacf3e945 47 #define SWAP_BYTES_IN_WORD(w) (((w) & 0xff) << 8) | (((w) & 0xff00) >> 8)
RodColeman 0:850eacf3e945 48 #endif /* LWIP_PLATFORM_BYTESWAP && (BYTE_ORDER == LITTLE_ENDIAN)*/
RodColeman 0:850eacf3e945 49 #endif /* SWAP_BYTES_IN_WORD */
RodColeman 0:850eacf3e945 50
RodColeman 0:850eacf3e945 51 /** Split an u32_t in two u16_ts and add them up */
RodColeman 0:850eacf3e945 52 #ifndef FOLD_U32T
RodColeman 0:850eacf3e945 53 #define FOLD_U32T(u) (((u) >> 16) + ((u) & 0x0000ffffUL))
RodColeman 0:850eacf3e945 54 #endif
RodColeman 0:850eacf3e945 55
RodColeman 0:850eacf3e945 56 #if LWIP_CHECKSUM_ON_COPY
RodColeman 0:850eacf3e945 57 /** Function-like macro: same as MEMCPY but returns the checksum of copied data
RodColeman 0:850eacf3e945 58 as u16_t */
RodColeman 0:850eacf3e945 59 #ifndef LWIP_CHKSUM_COPY
RodColeman 0:850eacf3e945 60 #define LWIP_CHKSUM_COPY(dst, src, len) lwip_chksum_copy(dst, src, len)
RodColeman 0:850eacf3e945 61 #ifndef LWIP_CHKSUM_COPY_ALGORITHM
RodColeman 0:850eacf3e945 62 #define LWIP_CHKSUM_COPY_ALGORITHM 1
RodColeman 0:850eacf3e945 63 #endif /* LWIP_CHKSUM_COPY_ALGORITHM */
RodColeman 0:850eacf3e945 64 #endif /* LWIP_CHKSUM_COPY */
RodColeman 0:850eacf3e945 65 #else /* LWIP_CHECKSUM_ON_COPY */
RodColeman 0:850eacf3e945 66 #define LWIP_CHKSUM_COPY_ALGORITHM 0
RodColeman 0:850eacf3e945 67 #endif /* LWIP_CHECKSUM_ON_COPY */
RodColeman 0:850eacf3e945 68
RodColeman 0:850eacf3e945 69 #ifdef __cplusplus
RodColeman 0:850eacf3e945 70 extern "C" {
RodColeman 0:850eacf3e945 71 #endif
RodColeman 0:850eacf3e945 72
RodColeman 0:850eacf3e945 73 u16_t inet_chksum(void *dataptr, u16_t len);
RodColeman 0:850eacf3e945 74 u16_t inet_chksum_pbuf(struct pbuf *p);
RodColeman 0:850eacf3e945 75 u16_t inet_chksum_pseudo(struct pbuf *p,
RodColeman 0:850eacf3e945 76 ip_addr_t *src, ip_addr_t *dest,
RodColeman 0:850eacf3e945 77 u8_t proto, u16_t proto_len);
RodColeman 0:850eacf3e945 78 u16_t inet_chksum_pseudo_partial(struct pbuf *p,
RodColeman 0:850eacf3e945 79 ip_addr_t *src, ip_addr_t *dest,
RodColeman 0:850eacf3e945 80 u8_t proto, u16_t proto_len, u16_t chksum_len);
RodColeman 0:850eacf3e945 81 #if LWIP_CHKSUM_COPY_ALGORITHM
RodColeman 0:850eacf3e945 82 u16_t lwip_chksum_copy(void *dst, const void *src, u16_t len);
RodColeman 0:850eacf3e945 83 #endif /* LWIP_CHKSUM_COPY_ALGORITHM */
RodColeman 0:850eacf3e945 84
RodColeman 0:850eacf3e945 85 #ifdef __cplusplus
RodColeman 0:850eacf3e945 86 }
RodColeman 0:850eacf3e945 87 #endif
RodColeman 0:850eacf3e945 88
RodColeman 0:850eacf3e945 89 #endif /* __LWIP_INET_H__ */
RodColeman 0:850eacf3e945 90