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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2026 Namjae Jeon <linkinjeon@kernel.org>
*/
#ifndef _COMMON_SMB_COMPRESS_H
#define _COMMON_SMB_COMPRESS_H
#include "../smb2pdu.h"
/*
* SMB3_COMPRESS_NONE is valid only in chained payload headers. It is never
* negotiated as a compression algorithm.
*/
static __always_inline bool smb_compress_alg_valid(__le16 alg, bool valid_none)
{
if (alg == SMB3_COMPRESS_NONE)
return valid_none;
return alg == SMB3_COMPRESS_LZ77 || alg == SMB3_COMPRESS_PATTERN;
}
int smb_compression_decompress(__le16 alg, bool allow_chained,
const void *src, u32 slen, void *dst, u32 dlen);
int smb_compression_compress_chained(__le16 alg, bool allow_pattern,
const void *src, u32 slen,
void *dst, u32 *dlen);
#endif /* _COMMON_SMB_COMPRESS_H */
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