Hendrik Lipka / NetServicesMin

Stripped down version of Segundos NetService library (http://mbed.org/users/segundo/libraries/NetServices ). I have removed all NetServices, and all functions which had been disabled. Use this version when you need only pure TCP or UDP functions - this library compiles faster.

Dependencies:   lwip lwip-sys

Dependents:   christmasLights device_server pop3demo device_server_udp ... more

lwip/include/ipv4/lwip/inet_chksum.h@0:8b387bed54c2, 2011-01-10 (annotated)

Committer:
hlipka
Date:
Mon Jan 10 21:03:11 2011 +0000
Revision:
0:8b387bed54c2
initial version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hlipka 0:8b387bed54c2 1 /*
hlipka 0:8b387bed54c2 2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
hlipka 0:8b387bed54c2 3 * All rights reserved.
hlipka 0:8b387bed54c2 4 *
hlipka 0:8b387bed54c2 5 * Redistribution and use in source and binary forms, with or without modification,
hlipka 0:8b387bed54c2 6 * are permitted provided that the following conditions are met:
hlipka 0:8b387bed54c2 7 *
hlipka 0:8b387bed54c2 8 * 1. Redistributions of source code must retain the above copyright notice,
hlipka 0:8b387bed54c2 9 * this list of conditions and the following disclaimer.
hlipka 0:8b387bed54c2 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
hlipka 0:8b387bed54c2 11 * this list of conditions and the following disclaimer in the documentation
hlipka 0:8b387bed54c2 12 * and/or other materials provided with the distribution.
hlipka 0:8b387bed54c2 13 * 3. The name of the author may not be used to endorse or promote products
hlipka 0:8b387bed54c2 14 * derived from this software without specific prior written permission.
hlipka 0:8b387bed54c2 15 *
hlipka 0:8b387bed54c2 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
hlipka 0:8b387bed54c2 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
hlipka 0:8b387bed54c2 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
hlipka 0:8b387bed54c2 19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
hlipka 0:8b387bed54c2 20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
hlipka 0:8b387bed54c2 21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
hlipka 0:8b387bed54c2 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
hlipka 0:8b387bed54c2 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
hlipka 0:8b387bed54c2 24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
hlipka 0:8b387bed54c2 25 * OF SUCH DAMAGE.
hlipka 0:8b387bed54c2 26 *
hlipka 0:8b387bed54c2 27 * This file is part of the lwIP TCP/IP stack.
hlipka 0:8b387bed54c2 28 *
hlipka 0:8b387bed54c2 29 * Author: Adam Dunkels <adam@sics.se>
hlipka 0:8b387bed54c2 30 *
hlipka 0:8b387bed54c2 31 */
hlipka 0:8b387bed54c2 32 #ifndef __LWIP_INET_CHKSUM_H__
hlipka 0:8b387bed54c2 33 #define __LWIP_INET_CHKSUM_H__
hlipka 0:8b387bed54c2 34
hlipka 0:8b387bed54c2 35 #include "lwip/opt.h"
hlipka 0:8b387bed54c2 36
hlipka 0:8b387bed54c2 37 #include "lwip/pbuf.h"
hlipka 0:8b387bed54c2 38 #include "lwip/ip_addr.h"
hlipka 0:8b387bed54c2 39
hlipka 0:8b387bed54c2 40 /** Swap the bytes in an u16_t: much like htons() for little-endian */
hlipka 0:8b387bed54c2 41 #ifndef SWAP_BYTES_IN_WORD
hlipka 0:8b387bed54c2 42 #if LWIP_PLATFORM_BYTESWAP && (BYTE_ORDER == LITTLE_ENDIAN)
hlipka 0:8b387bed54c2 43 /* little endian and PLATFORM_BYTESWAP defined */
hlipka 0:8b387bed54c2 44 #define SWAP_BYTES_IN_WORD(w) LWIP_PLATFORM_HTONS(w)
hlipka 0:8b387bed54c2 45 #else /* LWIP_PLATFORM_BYTESWAP && (BYTE_ORDER == LITTLE_ENDIAN) */
hlipka 0:8b387bed54c2 46 /* can't use htons on big endian (or PLATFORM_BYTESWAP not defined)... */
hlipka 0:8b387bed54c2 47 #define SWAP_BYTES_IN_WORD(w) (((w) & 0xff) << 8) | (((w) & 0xff00) >> 8)
hlipka 0:8b387bed54c2 48 #endif /* LWIP_PLATFORM_BYTESWAP && (BYTE_ORDER == LITTLE_ENDIAN)*/
hlipka 0:8b387bed54c2 49 #endif /* SWAP_BYTES_IN_WORD */
hlipka 0:8b387bed54c2 50
hlipka 0:8b387bed54c2 51 /** Split an u32_t in two u16_ts and add them up */
hlipka 0:8b387bed54c2 52 #ifndef FOLD_U32T
hlipka 0:8b387bed54c2 53 #define FOLD_U32T(u) (((u) >> 16) + ((u) & 0x0000ffffUL))
hlipka 0:8b387bed54c2 54 #endif
hlipka 0:8b387bed54c2 55
hlipka 0:8b387bed54c2 56 #if LWIP_CHECKSUM_ON_COPY
hlipka 0:8b387bed54c2 57 /** Function-like macro: same as MEMCPY but returns the checksum of copied data
hlipka 0:8b387bed54c2 58 as u16_t */
hlipka 0:8b387bed54c2 59 #ifndef LWIP_CHKSUM_COPY
hlipka 0:8b387bed54c2 60 #define LWIP_CHKSUM_COPY(dst, src, len) lwip_chksum_copy(dst, src, len)
hlipka 0:8b387bed54c2 61 #ifndef LWIP_CHKSUM_COPY_ALGORITHM
hlipka 0:8b387bed54c2 62 #define LWIP_CHKSUM_COPY_ALGORITHM 1
hlipka 0:8b387bed54c2 63 #endif /* LWIP_CHKSUM_COPY_ALGORITHM */
hlipka 0:8b387bed54c2 64 #endif /* LWIP_CHKSUM_COPY */
hlipka 0:8b387bed54c2 65 #else /* LWIP_CHECKSUM_ON_COPY */
hlipka 0:8b387bed54c2 66 #define LWIP_CHKSUM_COPY_ALGORITHM 0
hlipka 0:8b387bed54c2 67 #endif /* LWIP_CHECKSUM_ON_COPY */
hlipka 0:8b387bed54c2 68
hlipka 0:8b387bed54c2 69 #ifdef __cplusplus
hlipka 0:8b387bed54c2 70 extern "C" {
hlipka 0:8b387bed54c2 71 #endif
hlipka 0:8b387bed54c2 72
hlipka 0:8b387bed54c2 73 u16_t inet_chksum(void *dataptr, u16_t len);
hlipka 0:8b387bed54c2 74 u16_t inet_chksum_pbuf(struct pbuf *p);
hlipka 0:8b387bed54c2 75 u16_t inet_chksum_pseudo(struct pbuf *p,
hlipka 0:8b387bed54c2 76 ip_addr_t *src, ip_addr_t *dest,
hlipka 0:8b387bed54c2 77 u8_t proto, u16_t proto_len);
hlipka 0:8b387bed54c2 78 u16_t inet_chksum_pseudo_partial(struct pbuf *p,
hlipka 0:8b387bed54c2 79 ip_addr_t *src, ip_addr_t *dest,
hlipka 0:8b387bed54c2 80 u8_t proto, u16_t proto_len, u16_t chksum_len);
hlipka 0:8b387bed54c2 81 #if LWIP_CHKSUM_COPY_ALGORITHM
hlipka 0:8b387bed54c2 82 u16_t lwip_chksum_copy(void *dst, const void *src, u16_t len);
hlipka 0:8b387bed54c2 83 #endif /* LWIP_CHKSUM_COPY_ALGORITHM */
hlipka 0:8b387bed54c2 84
hlipka 0:8b387bed54c2 85 #ifdef __cplusplus
hlipka 0:8b387bed54c2 86 }
hlipka 0:8b387bed54c2 87 #endif
hlipka 0:8b387bed54c2 88
hlipka 0:8b387bed54c2 89 #endif /* __LWIP_INET_H__ */
hlipka 0:8b387bed54c2 90