Lorcan Smith / Mbed 2 deprecated Enet_SPI

SNMP agent attached to SPI slave

Dependencies:   mbed

lwip/include/ipv4/lwip/inet_chksum.h@0:2a53a4c3238c, 2012-08-13 (annotated)

Committer:
lorcansmith
Date:
Mon Aug 13 15:07:40 2012 +0000
Revision:
0:2a53a4c3238c
v1.1 release includes ioAlarm traps

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lorcansmith 0:2a53a4c3238c 1 /*
lorcansmith 0:2a53a4c3238c 2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
lorcansmith 0:2a53a4c3238c 3 * All rights reserved.
lorcansmith 0:2a53a4c3238c 4 *
lorcansmith 0:2a53a4c3238c 5 * Redistribution and use in source and binary forms, with or without modification,
lorcansmith 0:2a53a4c3238c 6 * are permitted provided that the following conditions are met:
lorcansmith 0:2a53a4c3238c 7 *
lorcansmith 0:2a53a4c3238c 8 * 1. Redistributions of source code must retain the above copyright notice,
lorcansmith 0:2a53a4c3238c 9 * this list of conditions and the following disclaimer.
lorcansmith 0:2a53a4c3238c 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
lorcansmith 0:2a53a4c3238c 11 * this list of conditions and the following disclaimer in the documentation
lorcansmith 0:2a53a4c3238c 12 * and/or other materials provided with the distribution.
lorcansmith 0:2a53a4c3238c 13 * 3. The name of the author may not be used to endorse or promote products
lorcansmith 0:2a53a4c3238c 14 * derived from this software without specific prior written permission.
lorcansmith 0:2a53a4c3238c 15 *
lorcansmith 0:2a53a4c3238c 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
lorcansmith 0:2a53a4c3238c 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
lorcansmith 0:2a53a4c3238c 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
lorcansmith 0:2a53a4c3238c 19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
lorcansmith 0:2a53a4c3238c 20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
lorcansmith 0:2a53a4c3238c 21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
lorcansmith 0:2a53a4c3238c 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
lorcansmith 0:2a53a4c3238c 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
lorcansmith 0:2a53a4c3238c 24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
lorcansmith 0:2a53a4c3238c 25 * OF SUCH DAMAGE.
lorcansmith 0:2a53a4c3238c 26 *
lorcansmith 0:2a53a4c3238c 27 * This file is part of the lwIP TCP/IP stack.
lorcansmith 0:2a53a4c3238c 28 *
lorcansmith 0:2a53a4c3238c 29 * Author: Adam Dunkels <adam@sics.se>
lorcansmith 0:2a53a4c3238c 30 *
lorcansmith 0:2a53a4c3238c 31 */
lorcansmith 0:2a53a4c3238c 32 #ifndef __LWIP_INET_CHKSUM_H__
lorcansmith 0:2a53a4c3238c 33 #define __LWIP_INET_CHKSUM_H__
lorcansmith 0:2a53a4c3238c 34
lorcansmith 0:2a53a4c3238c 35 #include "lwip/opt.h"
lorcansmith 0:2a53a4c3238c 36
lorcansmith 0:2a53a4c3238c 37 #include "lwip/pbuf.h"
lorcansmith 0:2a53a4c3238c 38 #include "lwip/ip_addr.h"
lorcansmith 0:2a53a4c3238c 39
lorcansmith 0:2a53a4c3238c 40 /** Swap the bytes in an u16_t: much like htons() for little-endian */
lorcansmith 0:2a53a4c3238c 41 #ifndef SWAP_BYTES_IN_WORD
lorcansmith 0:2a53a4c3238c 42 #if LWIP_PLATFORM_BYTESWAP && (BYTE_ORDER == LITTLE_ENDIAN)
lorcansmith 0:2a53a4c3238c 43 /* little endian and PLATFORM_BYTESWAP defined */
lorcansmith 0:2a53a4c3238c 44 #define SWAP_BYTES_IN_WORD(w) LWIP_PLATFORM_HTONS(w)
lorcansmith 0:2a53a4c3238c 45 #else /* LWIP_PLATFORM_BYTESWAP && (BYTE_ORDER == LITTLE_ENDIAN) */
lorcansmith 0:2a53a4c3238c 46 /* can't use htons on big endian (or PLATFORM_BYTESWAP not defined)... */
lorcansmith 0:2a53a4c3238c 47 #define SWAP_BYTES_IN_WORD(w) (((w) & 0xff) << 8) | (((w) & 0xff00) >> 8)
lorcansmith 0:2a53a4c3238c 48 #endif /* LWIP_PLATFORM_BYTESWAP && (BYTE_ORDER == LITTLE_ENDIAN)*/
lorcansmith 0:2a53a4c3238c 49 #endif /* SWAP_BYTES_IN_WORD */
lorcansmith 0:2a53a4c3238c 50
lorcansmith 0:2a53a4c3238c 51 /** Split an u32_t in two u16_ts and add them up */
lorcansmith 0:2a53a4c3238c 52 #ifndef FOLD_U32T
lorcansmith 0:2a53a4c3238c 53 #define FOLD_U32T(u) (((u) >> 16) + ((u) & 0x0000ffffUL))
lorcansmith 0:2a53a4c3238c 54 #endif
lorcansmith 0:2a53a4c3238c 55
lorcansmith 0:2a53a4c3238c 56 #if LWIP_CHECKSUM_ON_COPY
lorcansmith 0:2a53a4c3238c 57 /** Function-like macro: same as MEMCPY but returns the checksum of copied data
lorcansmith 0:2a53a4c3238c 58 as u16_t */
lorcansmith 0:2a53a4c3238c 59 #ifndef LWIP_CHKSUM_COPY
lorcansmith 0:2a53a4c3238c 60 #define LWIP_CHKSUM_COPY(dst, src, len) lwip_chksum_copy(dst, src, len)
lorcansmith 0:2a53a4c3238c 61 #ifndef LWIP_CHKSUM_COPY_ALGORITHM
lorcansmith 0:2a53a4c3238c 62 #define LWIP_CHKSUM_COPY_ALGORITHM 1
lorcansmith 0:2a53a4c3238c 63 #endif /* LWIP_CHKSUM_COPY_ALGORITHM */
lorcansmith 0:2a53a4c3238c 64 #endif /* LWIP_CHKSUM_COPY */
lorcansmith 0:2a53a4c3238c 65 #else /* LWIP_CHECKSUM_ON_COPY */
lorcansmith 0:2a53a4c3238c 66 #define LWIP_CHKSUM_COPY_ALGORITHM 0
lorcansmith 0:2a53a4c3238c 67 #endif /* LWIP_CHECKSUM_ON_COPY */
lorcansmith 0:2a53a4c3238c 68
lorcansmith 0:2a53a4c3238c 69 #ifdef __cplusplus
lorcansmith 0:2a53a4c3238c 70 extern "C" {
lorcansmith 0:2a53a4c3238c 71 #endif
lorcansmith 0:2a53a4c3238c 72
lorcansmith 0:2a53a4c3238c 73 u16_t inet_chksum(void *dataptr, u16_t len);
lorcansmith 0:2a53a4c3238c 74 u16_t inet_chksum_pbuf(struct pbuf *p);
lorcansmith 0:2a53a4c3238c 75 u16_t inet_chksum_pseudo(struct pbuf *p,
lorcansmith 0:2a53a4c3238c 76 ip_addr_t *src, ip_addr_t *dest,
lorcansmith 0:2a53a4c3238c 77 u8_t proto, u16_t proto_len);
lorcansmith 0:2a53a4c3238c 78 u16_t inet_chksum_pseudo_partial(struct pbuf *p,
lorcansmith 0:2a53a4c3238c 79 ip_addr_t *src, ip_addr_t *dest,
lorcansmith 0:2a53a4c3238c 80 u8_t proto, u16_t proto_len, u16_t chksum_len);
lorcansmith 0:2a53a4c3238c 81 #if LWIP_CHKSUM_COPY_ALGORITHM
lorcansmith 0:2a53a4c3238c 82 u16_t lwip_chksum_copy(void *dst, const void *src, u16_t len);
lorcansmith 0:2a53a4c3238c 83 #endif /* LWIP_CHKSUM_COPY_ALGORITHM */
lorcansmith 0:2a53a4c3238c 84
lorcansmith 0:2a53a4c3238c 85 #ifdef __cplusplus
lorcansmith 0:2a53a4c3238c 86 }
lorcansmith 0:2a53a4c3238c 87 #endif
lorcansmith 0:2a53a4c3238c 88
lorcansmith 0:2a53a4c3238c 89 #endif /* __LWIP_INET_H__ */
lorcansmith 0:2a53a4c3238c 90