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 */
37