diff options
Diffstat (limited to 'arch/parisc/lib')
| -rw-r--r-- | arch/parisc/lib/Makefile | 2 | ||||
| -rw-r--r-- | arch/parisc/lib/checksum.c | 99 |
2 files changed, 1 insertions, 100 deletions
diff --git a/arch/parisc/lib/Makefile b/arch/parisc/lib/Makefile index 7b197667faf6..d5975d1fb406 100644 --- a/arch/parisc/lib/Makefile +++ b/arch/parisc/lib/Makefile @@ -3,7 +3,7 @@ # Makefile for parisc-specific library files # -lib-y := lusercopy.o bitops.o checksum.o io.o memset.o memcpy.o \ +lib-y := lusercopy.o bitops.o io.o memset.o memcpy.o \ ucmpdi2.o delay.o obj-y := iomap.o diff --git a/arch/parisc/lib/checksum.c b/arch/parisc/lib/checksum.c deleted file mode 100644 index 59d8c15d81bd..000000000000 --- a/arch/parisc/lib/checksum.c +++ /dev/null @@ -1,99 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * INET An implementation of the TCP/IP protocol suite for the LINUX - * operating system. INET is implemented using the BSD Socket - * interface as the means of communication with the user level. - * - * MIPS specific IP/TCP/UDP checksumming routines - * - * Authors: Ralf Baechle, <ralf@waldorf-gmbh.de> - * Lots of code moved from tcp.c and ip.c; see those files - * for more names. - */ -#include <linux/module.h> -#include <linux/types.h> - -#include <net/checksum.h> -#include <asm/byteorder.h> -#include <asm/string.h> -#include <linux/uaccess.h> - -#define addc(_t,_r) \ - __asm__ __volatile__ ( \ -" add %0, %1, %0\n" \ -" addc %0, %%r0, %0\n" \ - : "=r"(_t) \ - : "r"(_r), "0"(_t)); - -static inline unsigned int do_csum(const unsigned char * buff, int len) -{ - int odd, count; - unsigned int result = 0; - - if (len <= 0) - goto out; - odd = 1 & (unsigned long) buff; - if (odd) { - result = be16_to_cpu(*buff); - len--; - buff++; - } - count = len >> 1; /* nr of 16-bit words.. */ - if (count) { - if (2 & (unsigned long) buff) { - result += *(unsigned short *) buff; - count--; - len -= 2; - buff += 2; - } - count >>= 1; /* nr of 32-bit words.. */ - if (count) { - while (count >= 4) { - unsigned int r1, r2, r3, r4; - r1 = *(unsigned int *)(buff + 0); - r2 = *(unsigned int *)(buff + 4); - r3 = *(unsigned int *)(buff + 8); - r4 = *(unsigned int *)(buff + 12); - addc(result, r1); - addc(result, r2); - addc(result, r3); - addc(result, r4); - count -= 4; - buff += 16; - } - while (count) { - unsigned int w = *(unsigned int *) buff; - count--; - buff += 4; - addc(result, w); - } - result = (result & 0xffff) + (result >> 16); - } - if (len & 2) { - result += *(unsigned short *) buff; - buff += 2; - } - } - if (len & 1) - result += le16_to_cpu(*buff); - result = csum_from32to16(result); - if (odd) - result = swab16(result); -out: - return result; -} - -/* - * computes a partial checksum, e.g. for TCP/UDP fragments - */ -/* - * why bother folding? - */ -__wsum csum_partial(const void *buff, int len, __wsum sum) -{ - unsigned int result = do_csum(buff, len); - addc(result, sum); - return (__force __wsum)csum_from32to16(result); -} - -EXPORT_SYMBOL(csum_partial); |
