cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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checksum.h (806B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * Copyright (C) 2008 Michal Simek <monstr@monstr.eu>
      4 * Copyright (C) 2006 Atmark Techno, Inc.
      5 */
      6
      7#ifndef _ASM_MICROBLAZE_CHECKSUM_H
      8#define _ASM_MICROBLAZE_CHECKSUM_H
      9
     10/*
     11 * computes the checksum of the TCP/UDP pseudo-header
     12 * returns a 16-bit checksum, already complemented
     13 */
     14#define csum_tcpudp_nofold	csum_tcpudp_nofold
     15static inline __wsum
     16csum_tcpudp_nofold(__be32 saddr, __be32 daddr, __u32 len,
     17		   __u8 proto, __wsum sum)
     18{
     19	__asm__("add %0, %0, %1\n\t"
     20		"addc %0, %0, %2\n\t"
     21		"addc %0, %0, %3\n\t"
     22		"addc %0, %0, r0\n\t"
     23		: "+&d" (sum)
     24		: "d" (saddr), "d" (daddr),
     25#ifdef __MICROBLAZEEL__
     26	"d" ((len + proto) << 8)
     27#else
     28	"d" (len + proto)
     29#endif
     30);
     31	return sum;
     32}
     33
     34#include <asm-generic/checksum.h>
     35
     36#endif /* _ASM_MICROBLAZE_CHECKSUM_H */