From 639f6571458948b5112be2cf00c0c2c04db2897d Mon Sep 17 00:00:00 2001 From: Bryan Wu Date: Wed, 27 Aug 2008 10:51:02 +0800 Subject: Blackfin arch: move include/asm-blackfin header files to arch/blackfin Signed-off-by: Bryan Wu --- include/asm-blackfin/checksum.h | 100 ---------------------------------------- 1 file changed, 100 deletions(-) delete mode 100644 include/asm-blackfin/checksum.h (limited to 'include/asm-blackfin/checksum.h') diff --git a/include/asm-blackfin/checksum.h b/include/asm-blackfin/checksum.h deleted file mode 100644 index 6f6af2b8e9e0..000000000000 --- a/include/asm-blackfin/checksum.h +++ /dev/null @@ -1,100 +0,0 @@ -#ifndef _BFIN_CHECKSUM_H -#define _BFIN_CHECKSUM_H - -/* - * MODIFIED FOR BFIN April 30, 2001 akbar.hussain@lineo.com - * - * computes the checksum of a memory block at buff, length len, - * and adds in "sum" (32-bit) - * - * returns a 32-bit number suitable for feeding into itself - * or csum_tcpudp_magic - * - * this function must be called with even lengths, except - * for the last fragment, which may be odd - * - * it's best to have buff aligned on a 32-bit boundary - */ -__wsum csum_partial(const void *buff, int len, __wsum sum); - -/* - * the same as csum_partial, but copies from src while it - * checksums - * - * here even more important to align src and dst on a 32-bit (or even - * better 64-bit) boundary - */ - -__wsum csum_partial_copy(const void *src, void *dst, - int len, __wsum sum); - -/* - * the same as csum_partial_copy, but copies from user space. - * - * here even more important to align src and dst on a 32-bit (or even - * better 64-bit) boundary - */ - -extern __wsum csum_partial_copy_from_user(const void __user *src, void *dst, - int len, __wsum sum, int *csum_err); - -#define csum_partial_copy_nocheck(src, dst, len, sum) \ - csum_partial_copy((src), (dst), (len), (sum)) - -__sum16 ip_fast_csum(unsigned char *iph, unsigned int ihl); - -/* - * Fold a partial checksum - */ - -static inline __sum16 csum_fold(__wsum sum) -{ - while (sum >> 16) - sum = (sum & 0xffff) + (sum >> 16); - return ((~(sum << 16)) >> 16); -} - -/* - * computes the checksum of the TCP/UDP pseudo-header - * returns a 16-bit checksum, already complemented - */ - -static inline __wsum -csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len, - unsigned short proto, __wsum sum) -{ - - __asm__ ("%0 = %0 + %1;\n\t" - "CC = AC0;\n\t" - "if !CC jump 4;\n\t" - "%0 = %0 + %4;\n\t" - "%0 = %0 + %2;\n\t" - "CC = AC0;\n\t" - "if !CC jump 4;\n\t" - "%0 = %0 + %4;\n\t" - "%0 = %0 + %3;\n\t" - "CC = AC0;\n\t" - "if !CC jump 4;\n\t" - "%0 = %0 + %4;\n\t" - "NOP;\n\t" - : "=d" (sum) - : "d" (daddr), "d" (saddr), "d" ((ntohs(len)<<16)+proto*256), "d" (1), "0"(sum)); - - return (sum); -} - -static inline __sum16 -csum_tcpudp_magic(__be32 saddr, __be32 daddr, unsigned short len, - unsigned short proto, __wsum sum) -{ - return csum_fold(csum_tcpudp_nofold(saddr, daddr, len, proto, sum)); -} - -/* - * this routine is used for miscellaneous IP-like checksums, mainly - * in icmp.c - */ - -extern __sum16 ip_compute_csum(const void *buff, int len); - -#endif /* _BFIN_CHECKSUM_H */ -- cgit v1.2.3