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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
| commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
| tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /arch/microblaze/include/asm/checksum.h | |
| parent | Initial commit. (diff) | |
| download | linux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip | |
Adding upstream version 4.19.249.upstream/4.19.249
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/microblaze/include/asm/checksum.h')
| -rw-r--r-- | arch/microblaze/include/asm/checksum.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/microblaze/include/asm/checksum.h b/arch/microblaze/include/asm/checksum.h new file mode 100644 index 000000000..adeecebbb --- /dev/null +++ b/arch/microblaze/include/asm/checksum.h @@ -0,0 +1,39 @@ +/* + * Copyright (C) 2008 Michal Simek <monstr@monstr.eu> + * Copyright (C) 2006 Atmark Techno, Inc. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ + +#ifndef _ASM_MICROBLAZE_CHECKSUM_H +#define _ASM_MICROBLAZE_CHECKSUM_H + +/* + * computes the checksum of the TCP/UDP pseudo-header + * returns a 16-bit checksum, already complemented + */ +#define csum_tcpudp_nofold csum_tcpudp_nofold +static inline __wsum +csum_tcpudp_nofold(__be32 saddr, __be32 daddr, __u32 len, + __u8 proto, __wsum sum) +{ + __asm__("add %0, %0, %1\n\t" + "addc %0, %0, %2\n\t" + "addc %0, %0, %3\n\t" + "addc %0, %0, r0\n\t" + : "+&d" (sum) + : "d" (saddr), "d" (daddr), +#ifdef __MICROBLAZEEL__ + "d" ((len + proto) << 8) +#else + "d" (len + proto) +#endif +); + return sum; +} + +#include <asm-generic/checksum.h> + +#endif /* _ASM_MICROBLAZE_CHECKSUM_H */ |