From 88771fa7a3910f5c50f25e952500273fafa375be Mon Sep 17 00:00:00 2001 From: richardbarry Date: Mon, 15 Feb 2010 14:47:29 +0000 Subject: [PATCH] Add back in the uip_arch.h header file. git-svn-id: https://svn.code.sf.net/p/freertos/code/trunk@979 1d2547de-c912-0410-9cb9-b8ca96c0e9e2 --- Demo/Common/ethernet/FreeTCPIP/net/uip_arch.h | 138 ++++++++++++++++++ 1 file changed, 138 insertions(+) create mode 100644 Demo/Common/ethernet/FreeTCPIP/net/uip_arch.h diff --git a/Demo/Common/ethernet/FreeTCPIP/net/uip_arch.h b/Demo/Common/ethernet/FreeTCPIP/net/uip_arch.h new file mode 100644 index 000000000..9ee37578c --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/net/uip_arch.h @@ -0,0 +1,138 @@ +/** + * \addtogroup uip + * {@ + */ + +/** + * \defgroup uiparch Architecture specific uIP functions + * @{ + * + * The functions in the architecture specific module implement the IP + * check sum and 32-bit additions. + * + * The IP checksum calculation is the most computationally expensive + * operation in the TCP/IP stack and it therefore pays off to + * implement this in efficient assembler. The purpose of the uip-arch + * module is to let the checksum functions to be implemented in + * architecture specific assembler. + * + */ + +/** + * \file + * Declarations of architecture specific functions. + * \author Adam Dunkels + */ + +/* + * Copyright (c) 2001, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: uip_arch.h,v 1.1 2006/06/17 22:41:19 adamdunkels Exp $ + * + */ + +#ifndef __UIP_ARCH_H__ +#define __UIP_ARCH_H__ + +#include "net/uip.h" + +/** + * Carry out a 32-bit addition. + * + * Because not all architectures for which uIP is intended has native + * 32-bit arithmetic, uIP uses an external C function for doing the + * required 32-bit additions in the TCP protocol processing. This + * function should add the two arguments and place the result in the + * global variable uip_acc32. + * + * \note The 32-bit integer pointed to by the op32 parameter and the + * result in the uip_acc32 variable are in network byte order (big + * endian). + * + * \param op32 A pointer to a 4-byte array representing a 32-bit + * integer in network byte order (big endian). + * + * \param op16 A 16-bit integer in host byte order. + */ +void uip_add32(u8_t *op32, u16_t op16); + +/** + * Calculate the Internet checksum over a buffer. + * + * The Internet checksum is the one's complement of the one's + * complement sum of all 16-bit words in the buffer. + * + * See RFC1071. + * + * \note This function is not called in the current version of uIP, + * but future versions might make use of it. + * + * \param buf A pointer to the buffer over which the checksum is to be + * computed. + * + * \param len The length of the buffer over which the checksum is to + * be computed. + * + * \return The Internet checksum of the buffer. + */ +u16_t uip_chksum(u16_t *buf, u16_t len); + +/** + * Calculate the IP header checksum of the packet header in uip_buf. + * + * The IP header checksum is the Internet checksum of the 20 bytes of + * the IP header. + * + * \return The IP header checksum of the IP header in the uip_buf + * buffer. + */ +u16_t uip_ipchksum(void); + +/** + * Calculate the TCP checksum of the packet in uip_buf and uip_appdata. + * + * The TCP checksum is the Internet checksum of data contents of the + * TCP segment, and a pseudo-header as defined in RFC793. + * + * \note The uip_appdata pointer that points to the packet data may + * point anywhere in memory, so it is not possible to simply calculate + * the Internet checksum of the contents of the uip_buf buffer. + * + * \return The TCP checksum of the TCP segment in uip_buf and pointed + * to by uip_appdata. + */ +u16_t uip_tcpchksum(void); + +u16_t uip_udpchksum(void); + +/** @} */ +/** @} */ + +#endif /* __UIP_ARCH_H__ */ -- 2.39.5