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Hi all,
this patchset removes 5 identical crc16 table, replacing them with
one table in lib/crc16.c
Best regards.
-- Andrey Panin | Embedded systems software developer pazke@orbita1.ru | PGP key: wwwkeys.pgp.net--=_courier-16255-1041745920-0001-2 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=patch-crc16
diff -urN -X /usr/share/dontdiff linux-2.5.53.vanilla/include/linux/crc16.h linux-2.5.53/include/linux/crc16.h --- linux-2.5.53.vanilla/include/linux/crc16.h Thu Jan 1 03:00:00 1970 +++ linux-2.5.53/include/linux/crc16.h Mon Dec 30 12:41:31 2002 @@ -0,0 +1,15 @@ +#ifndef _LINUX_CRC16_H +#define _LINUX_CRC16_H + +#include <linux/types.h> + +extern u16 const crc16_table[256]; + +extern u16 crc16(u16 crc, const u8 *buffer, size_t len); + +static inline u16 crc16_byte(u16 crc, const u8 c) +{ + return (crc >> 8) ^ crc16_table[(crc ^ c) & 0xff]; +} + +#endif /* _LINUX_CRC16_H */ diff -urN -X /usr/share/dontdiff linux-2.5.53.vanilla/lib/Kconfig linux-2.5.53/lib/Kconfig --- linux-2.5.53.vanilla/lib/Kconfig Fri Dec 27 19:48:27 2002 +++ linux-2.5.53/lib/Kconfig Mon Dec 30 12:51:39 2002 @@ -4,6 +4,14 @@ menu "Library routines" +config CRC16 + tristate "CRC16 functions" + help + This option is provided for the case where no in-kernel-tree + modules require CRC16 functions, but a module built outside the + kernel tree does. Such modules that use library CRC16 functions + require M here. + config CRC32 tristate "CRC32 functions" help diff -urN -X /usr/share/dontdiff linux-2.5.53.vanilla/lib/Makefile linux-2.5.53/lib/Makefile --- linux-2.5.53.vanilla/lib/Makefile Fri Dec 27 19:48:25 2002 +++ linux-2.5.53/lib/Makefile Mon Dec 30 12:56:35 2002 @@ -22,6 +22,7 @@ obj-y += dec_and_lock.o endif +obj-$(CONFIG_CRC16) += crc16.o obj-$(CONFIG_CRC32) += crc32.o obj-$(CONFIG_ZLIB_INFLATE) += zlib_inflate/ diff -urN -X /usr/share/dontdiff linux-2.5.53.vanilla/lib/crc16.c linux-2.5.53/lib/crc16.c --- linux-2.5.53.vanilla/lib/crc16.c Thu Jan 1 03:00:00 1970 +++ linux-2.5.53/lib/crc16.c Mon Dec 30 12:51:58 2002 @@ -0,0 +1,69 @@ +/* + * linux/lib/crc16.c + * + * This source code is licensed under the GNU General Public License, + * Version 2. See the file COPYING for more details. + */ + +#include <linux/types.h> +#include <linux/module.h> +#include <linux/crc16.h> + +/* + * This mysterious table is just the CRC of each possible byte. It can be + * computed using the standard bit-at-a-time methods. The polynomial can + * be seen in entry 128, 0x8408. This corresponds to x^0 + x^5 + x^12. + * Add the implicit x^16, and you have the standard CRC-CCITT. + */ +u16 const crc16_table[256] = { + 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf, + 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7, + 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e, + 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876, + 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd, + 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, + 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, + 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, + 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, + 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3, + 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a, + 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72, + 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9, + 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1, + 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, + 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, + 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, + 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, + 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036, + 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e, + 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5, + 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd, + 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134, + 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, + 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, + 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, + 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, + 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, + 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1, + 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9, + 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330, + 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78 +}; +EXPORT_SYMBOL(crc16_table); + +/** + * crc16 - recompute the CRC for the data buffer + * @crc - previous CRC value + * @buffer - data pointer + * @len - number of bytes in the buffer + */ +u16 crc16(u16 crc, u8 const *buffer, size_t len) +{ + while (len--) + crc = crc16_byte(crc, *buffer++); + return crc; +} +EXPORT_SYMBOL(crc16); + +MODULE_DESCRIPTION("CRC16 calculations"); +MODULE_LICENSE("GPL");
--=_courier-16255-1041745920-0001-2 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=patch-crc16-hisax
diff -urN -X /usr/share/dontdiff linux-2.5.53.vanilla/drivers/isdn/hisax/rawhdlc.c linux-2.5.53/drivers/isdn/hisax/rawhdlc.c --- linux-2.5.53.vanilla/drivers/isdn/hisax/rawhdlc.c Fri Dec 27 19:45:53 2002 +++ linux-2.5.53/drivers/isdn/hisax/rawhdlc.c Sun Dec 29 17:34:46 2002 @@ -138,47 +138,6 @@ #include <linux/ppp_defs.h> #include "rawhdlc.h" -/* There's actually an identical copy of this table in the PPP code - * (ppp_crc16_table), but I don't want this code dependent on PPP - */ - -// static -__u16 fcstab[256] = -{ - 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf, - 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7, - 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e, - 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876, - 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd, - 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, - 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, - 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, - 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, - 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3, - 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a, - 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72, - 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9, - 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1, - 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, - 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, - 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, - 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, - 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036, - 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e, - 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5, - 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd, - 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134, - 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, - 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, - 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, - 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, - 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, - 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1, - 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9, - 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330, - 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78 -}; - #define HDLC_ZERO_SEARCH 0 #define HDLC_FLAG_SEARCH 1 #define HDLC_FLAG_FOUND 2 diff -urN -X /usr/share/dontdiff linux-2.5.53.vanilla/drivers/isdn/hisax/st5481_hdlc.c linux-2.5.53/drivers/isdn/hisax/st5481_hdlc.c --- linux-2.5.53.vanilla/drivers/isdn/hisax/st5481_hdlc.c Fri Dec 27 19:45:53 2002 +++ linux-2.5.53/drivers/isdn/hisax/st5481_hdlc.c Mon Dec 30 13:30:45 2002 @@ -10,45 +10,9 @@ * */ +#include <linux/crc16.h> #include "st5481_hdlc.h" -static const unsigned short int crc16_tab[] = { - 0x0000,0x1189,0x2312,0x329b,0x4624,0x57ad,0x6536,0x74bf, - 0x8c48,0x9dc1,0xaf5a,0xbed3,0xca6c,0xdbe5,0xe97e,0xf8f7, - 0x1081,0x0108,0x3393,0x221a,0x56a5,0x472c,0x75b7,0x643e, - 0x9cc9,0x8d40,0xbfdb,0xae52,0xdaed,0xcb64,0xf9ff,0xe876, - 0x2102,0x308b,0x0210,0x1399,0x6726,0x76af,0x4434,0x55bd, - 0xad4a,0xbcc3,0x8e58,0x9fd1,0xeb6e,0xfae7,0xc87c,0xd9f5, - 0x3183,0x200a,0x1291,0x0318,0x77a7,0x662e,0x54b5,0x453c, - 0xbdcb,0xac42,0x9ed9,0x8f50,0xfbef,0xea66,0xd8fd,0xc974, - 0x4204,0x538d,0x6116,0x709f,0x0420,0x15a9,0x2732,0x36bb, - 0xce4c,0xdfc5,0xed5e,0xfcd7,0x8868,0x99e1,0xab7a,0xbaf3, - 0x5285,0x430c,0x7197,0x601e,0x14a1,0x0528,0x37b3,0x263a, - 0xdecd,0xcf44,0xfddf,0xec56,0x98e9,0x8960,0xbbfb,0xaa72, - 0x6306,0x728f,0x4014,0x519d,0x2522,0x34ab,0x0630,0x17b9, - 0xef4e,0xfec7,0xcc5c,0xddd5,0xa96a,0xb8e3,0x8a78,0x9bf1, - 0x7387,0x620e,0x5095,0x411c,0x35a3,0x242a,0x16b1,0x0738, - 0xffcf,0xee46,0xdcdd,0xcd54,0xb9eb,0xa862,0x9af9,0x8b70, - 0x8408,0x9581,0xa71a,0xb693,0xc22c,0xd3a5,0xe13e,0xf0b7, - 0x0840,0x19c9,0x2b52,0x3adb,0x4e64,0x5fed,0x6d76,0x7cff, - 0x9489,0x8500,0xb79b,0xa612,0xd2ad,0xc324,0xf1bf,0xe036, - 0x18c1,0x0948,0x3bd3,0x2a5a,0x5ee5,0x4f6c,0x7df7,0x6c7e, - 0xa50a,0xb483,0x8618,0x9791,0xe32e,0xf2a7,0xc03c,0xd1b5, - 0x2942,0x38cb,0x0a50,0x1bd9,0x6f66,0x7eef,0x4c74,0x5dfd, - 0xb58b,0xa402,0x9699,0x8710,0xf3af,0xe226,0xd0bd,0xc134, - 0x39c3,0x284a,0x1ad1,0x0b58,0x7fe7,0x6e6e,0x5cf5,0x4d7c, - 0xc60c,0xd785,0xe51e,0xf497,0x8028,0x91a1,0xa33a,0xb2b3, - 0x4a44,0x5bcd,0x6956,0x78df,0x0c60,0x1de9,0x2f72,0x3efb, - 0xd68d,0xc704,0xf59f,0xe416,0x90a9,0x8120,0xb3bb,0xa232, - 0x5ac5,0x4b4c,0x79d7,0x685e,0x1ce1,0x0d68,0x3ff3,0x2e7a, - 0xe70e,0xf687,0xc41c,0xd595,0xa12a,0xb0a3,0x8238,0x93b1, - 0x6b46,0x7acf,0x4854,0x59dd,0x2d62,0x3ceb,0x0e70,0x1ff9, - 0xf78f,0xe606,0xd49d,0xc514,0xb1ab,0xa022,0x92b9,0x8330, - 0x7bc7,0x6a4e,0x58d5,0x495c,0x3de3,0x2c6a,0x1ef1,0x0f78 -}; - - - enum { HDLC_FAST_IDLE,HDLC_GET_FLAG_B0,HDLC_GETFLAG_B1A6,HDLC_GETFLAG_B7, HDLC_GET_DATA,HDLC_FAST_FLAG @@ -300,7 +264,7 @@ hdlc->data_bits = 0; hdlc->data_received = 1; cval = (hdlc->crc^hdlc->shift_reg) & 0xff; - hdlc->crc = (hdlc->crc>>8)^crc16_tab[cval]; + hdlc->crc = (hdlc->crc>>8)^crc16_table[cval]; // good byte received if (dsize--) { dst[hdlc->dstpos++] = hdlc->shift_reg; @@ -479,7 +443,7 @@ unsigned cval; cval = (hdlc->crc^hdlc->shift_reg) & 0xff; - hdlc->crc = (hdlc->crc>>8)^crc16_tab[cval]; + hdlc->crc = (hdlc->crc>>8)^crc16_table[cval]; } if(hdlc->shift_reg & 0x01){ hdlc->hdlc_bits1++;
--=_courier-16255-1041745920-0001-2 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=patch-crc16-irda
diff -urN -X /usr/share/dontdiff linux-2.5.53.vanilla/drivers/net/irda/donauboe.c linux-2.5.53/drivers/net/irda/donauboe.c --- linux-2.5.53.vanilla/drivers/net/irda/donauboe.c Fri Dec 27 19:45:30 2002 +++ linux-2.5.53/drivers/net/irda/donauboe.c Sun Dec 29 17:46:51 2002 @@ -52,10 +52,6 @@ /* See below for a description of the logic in this driver */ -/* Is irda_crc16_table[] exported? not yet */ -/* define this if you get errors about multiple defns of irda_crc16_table */ -#undef CRC_EXPORTED - /* User servicable parts */ /* Enable the code which probes the chip and does a few tests */ /* Probe code is very useful for understanding how the hardware works */ @@ -159,6 +155,7 @@ #include <linux/init.h> #include <linux/pci.h> #include <linux/rtnetlink.h> +#include <linux/crc16.h> #include <asm/system.h> #include <asm/io.h> @@ -205,45 +202,6 @@ /**********************************************************************/ /* Fcs code */ - -#ifdef CRC_EXPORTED -extern __u16 const irda_crc16_table[]; -#else -static __u16 const irda_crc16_table[256] = { - 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf, - 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7, - 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e, - 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876, - 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd, - 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, - 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, - 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, - 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, - 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3, - 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a, - 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72, - 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9, - 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1, - 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, - 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, - 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, - 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, - 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036, - 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e, - 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5, - 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd, - 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134, - 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, - 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, - 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, - 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, - 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, - 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1, - 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9, - 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330, - 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78 -}; -#endif STATIC int toshoboe_checkfcs (unsigned char *buf, int len) diff -urN -X /usr/share/dontdiff linux-2.5.53.vanilla/include/net/irda/crc.h linux-2.5.53/include/net/irda/crc.h --- linux-2.5.53.vanilla/include/net/irda/crc.h Fri Dec 27 19:46:57 2002 +++ linux-2.5.53/include/net/irda/crc.h Mon Dec 30 13:16:08 2002 @@ -15,19 +15,15 @@ #define IRDA_CRC_H #include <linux/types.h> +#include <linux/crc16.h> #define INIT_FCS 0xffff /* Initial FCS value */ #define GOOD_FCS 0xf0b8 /* Good final FCS value */ -extern __u16 const irda_crc16_table[]; - /* Recompute the FCS with one more character appended. */ -static inline __u16 irda_fcs(__u16 fcs, __u8 c) -{ - return (((fcs) >> 8) ^ irda_crc16_table[((fcs) ^ (c)) & 0xff]); -} +#define irda_fcs(fcs, c) crc16_byte(fcs, c) /* Recompute the FCS with len bytes appended. */ -unsigned short irda_calc_crc16( __u16 fcs, __u8 const *buf, size_t len); +#define irda_calc_crc16(fcs, buf, len) crc16(fcs, buf, len) #endif diff -urN -X /usr/share/dontdiff linux-2.5.53.vanilla/net/irda/Makefile linux-2.5.53/net/irda/Makefile --- linux-2.5.53.vanilla/net/irda/Makefile Fri Dec 27 19:48:04 2002 +++ linux-2.5.53/net/irda/Makefile Mon Dec 30 13:18:14 2002 @@ -11,7 +11,7 @@ irda-y := iriap.o iriap_event.o irlmp.o irlmp_event.o irlmp_frame.o \ irlap.o irlap_event.o irlap_frame.o timer.o qos.o irqueue.o \ - irttp.o irda_device.o irias_object.o crc.o wrapper.o af_irda.o \ + irttp.o irda_device.o irias_object.o wrapper.o af_irda.o \ discovery.o parameters.o irsyms.o irda-$(CONFIG_PROC_FS) += irproc.o irda-$(CONFIG_SYSCTL) += irsysctl.o diff -urN -X /usr/share/dontdiff linux-2.5.53.vanilla/net/irda/crc.c linux-2.5.53/net/irda/crc.c --- linux-2.5.53.vanilla/net/irda/crc.c Fri Dec 27 19:48:04 2002 +++ linux-2.5.53/net/irda/crc.c Thu Jan 1 03:00:00 1970 @@ -1,65 +0,0 @@ -/********************************************************************* - * - * Filename: crc.c - * Version: 0.1 - * Description: CRC calculation routines - * Status: Experimental. - * Author: Dag Brattli <dagb@cs.uit.no> - * Created at: Mon Aug 4 20:40:53 1997 - * Modified at: Sun May 2 20:28:08 1999 - * Modified by: Dag Brattli <dagb@cs.uit.no> - * Sources: ppp.c by Michael Callahan <callahan@maths.ox.ac.uk> - * Al Longyear <longyear@netcom.com> - * - ********************************************************************/ - -#include <net/irda/crc.h> - -/* - * This mysterious table is just the CRC of each possible byte. It can be - * computed using the standard bit-at-a-time methods. The polynomial can - * be seen in entry 128, 0x8408. This corresponds to x^0 + x^5 + x^12. - * Add the implicit x^16, and you have the standard CRC-CCITT. - */ -__u16 const irda_crc16_table[256] = -{ - 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf, - 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7, - 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e, - 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876, - 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd, - 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, - 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, - 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, - 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, - 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3, - 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a, - 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72, - 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9, - 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1, - 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, - 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, - 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, - 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, - 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036, - 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e, - 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5, - 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd, - 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134, - 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, - 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, - 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, - 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, - 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, - 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1, - 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9, - 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330, - 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78 -}; - -unsigned short irda_calc_crc16( __u16 fcs, __u8 const *buf, size_t len) -{ - while (len--) - fcs = irda_fcs(fcs, *buf++); - return fcs; -}
--=_courier-16255-1041745920-0001-2 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=patch-crc16-ppp
diff -urN -X /usr/share/dontdiff linux-2.5.53.vanilla/drivers/net/ppp_async.c linux-2.5.53/drivers/net/ppp_async.c --- linux-2.5.53.vanilla/drivers/net/ppp_async.c Fri Dec 27 19:45:42 2002 +++ linux-2.5.53/drivers/net/ppp_async.c Sun Dec 29 19:12:18 2002 @@ -26,6 +26,7 @@ #include <linux/tty.h> #include <linux/netdevice.h> #include <linux/poll.h> +#include <linux/crc16.h> #include <linux/ppp_defs.h> #include <linux/if_ppp.h> #include <linux/ppp_channel.h> @@ -464,43 +465,6 @@ /* * Procedures for encapsulation and framing. */ - -u16 ppp_crc16_table[256] = { - 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf, - 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7, - 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e, - 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876, - 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd, - 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, - 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, - 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, - 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, - 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3, - 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a, - 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72, - 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9, - 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1, - 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, - 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, - 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, - 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, - 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036, - 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e, - 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5, - 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd, - 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134, - 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, - 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, - 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, - 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, - 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, - 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1, - 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9, - 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330, - 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78 -}; -EXPORT_SYMBOL(ppp_crc16_table); -#define fcstab ppp_crc16_table /* for PPP_FCS macro */ /* * Procedure to encode the data for async serial transmission. diff -urN -X /usr/share/dontdiff linux-2.5.53.vanilla/include/linux/ppp_defs.h linux-2.5.53/include/linux/ppp_defs.h --- linux-2.5.53.vanilla/include/linux/ppp_defs.h Fri Dec 27 19:46:49 2002 +++ linux-2.5.53/include/linux/ppp_defs.h Mon Dec 30 12:36:47 2002 @@ -92,7 +92,7 @@ #define PPP_INITFCS 0xffff /* Initial FCS value */ #define PPP_GOODFCS 0xf0b8 /* Good final FCS value */ -#define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff]) +#define PPP_FCS(fcs, c) crc16_byte(fcs, c) /* * Extended asyncmap - allows any character to be escaped.
--=_courier-16255-1041745920-0001-2 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=patch-crc16-l1
diff -urN -X /usr/share/dontdiff linux-2.5.53.vanilla/arch/ia64/sn/io/l1.c linux-2.5.53/arch/ia64/sn/io/l1.c --- linux-2.5.53.vanilla/arch/ia64/sn/io/l1.c Fri Dec 27 19:45:14 2002 +++ linux-2.5.53/arch/ia64/sn/io/l1.c Mon Dec 30 14:31:20 2002 @@ -29,6 +29,7 @@ #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/delay.h> +#include <linux/crc16.h> #include <asm/sn/sgi.h> #include <asm/sn/io.h> #include <asm/sn/iograph.h> @@ -740,49 +741,9 @@ * These are based on RFC 1662 ("PPP in HDLC-like framing"). */ -static unsigned short fcstab[256] = { - 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf, - 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7, - 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e, - 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876, - 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd, - 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, - 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, - 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, - 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, - 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3, - 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a, - 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72, - 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9, - 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1, - 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, - 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, - 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, - 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, - 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036, - 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e, - 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5, - 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd, - 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134, - 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, - 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, - 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, - 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, - 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, - 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1, - 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9, - 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330, - 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78 -}; - #define INIT_CRC 0xFFFF /* initial CRC value */ #define GOOD_CRC 0xF0B8 /* "good" final CRC value */ -static unsigned short crc16_calc( unsigned short crc, u_char c ) -{ - return( (crc >> 8) ^ fcstab[(crc ^ c) & 0xff] ); -} - /*********************************************************************** * The following functions implement the PPP-like bedrock/L1 protocol @@ -941,7 +902,7 @@ *send_ptr++ = BRL1_FLAG_CH; *send_ptr++ = type_and_subch; pkt_len += 2; - crc = crc16_calc( crc, type_and_subch ); + crc = crc16_byte(crc, type_and_subch); /* limit number of characters accepted to max payload size */ if( len > (BRL1_QSIZE - 1) ) @@ -970,7 +931,7 @@ *send_ptr++ = *msg; pkt_len++; } - crc = crc16_calc( crc, *msg ); + crc = crc16_byte(crc, *msg); msg++; } crc ^= 0xffff; @@ -1345,12 +1306,12 @@ * ending with the transmitted CRC. This should * result in a known good value. */ - crc = crc16_calc( INIT_CRC, LAST_HDR_GET(sc) ); + crc = crc16_byte(INIT_CRC, LAST_HDR_GET(sc)); for( i = (q->ipos + (IS_TTY_PKT(sc) ? 0 : 2)) % BRL1_QSIZE; i != q->tent_next; i = (i + 1) % BRL1_QSIZE ) { - crc = crc16_calc( crc, q->buf[i] ); + crc = crc16_byte(crc, q->buf[i]); } /* verify the caclulated crc against the "good" crc value; @@ -2005,7 +1966,7 @@ PUTCHAR( BRL1_FLAG_CH ); PUTCHAR( BRL1_EVENT | SC_CONS_SYSTEM ); - crc = crc16_calc( crc, (BRL1_EVENT | SC_CONS_SYSTEM) ); + crc = crc16_byte(crc, (BRL1_EVENT | SC_CONS_SYSTEM)); while( len ) { @@ -2017,7 +1978,7 @@ PUTCHAR( *str ); } - crc = crc16_calc( crc, *str ); + crc = crc16_byte(crc, *str); str++; len--; }
--=_courier-16255-1041745920-0001-2--