From 3563a6f4683eb08f9a437e028dd027ac31092381 Mon Sep 17 00:00:00 2001 From: Steve French Date: Sat, 30 May 2020 17:10:16 -0500 Subject: [PATCH] smb3: minor update to compression header definitions MS-SMB2 specification was updated in March. Make minor additions and corrections to compression related definitions in smb2pdu.h Signed-off-by: Steve French Reviewed-by: Aurelien Aptel --- fs/cifs/smb2pdu.h | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h index 10acf90..3b0e6ac 100644 --- a/fs/cifs/smb2pdu.h +++ b/fs/cifs/smb2pdu.h @@ -143,8 +143,17 @@ struct smb2_transform_hdr { __u64 SessionId; } __packed; +/* See MS-SMB2 2.2.42 */ +struct smb2_compression_transform_hdr { + __le32 ProtocolId; /* 0xFC 'S' 'M' 'B' */ + __le32 OriginalCompressedSegmentSize; + __le16 CompressionAlgorithm; + __le16 Flags; + __le16 Length; /* if chained it is length, else offset */ +} __packed; + /* See MS-SMB2 2.2.42.1 */ -struct compression_playload_header { +struct compression_payload_header { __le16 AlgorithmId; __le16 Reserved; __le32 Length; @@ -333,7 +342,7 @@ struct smb2_encryption_neg_context { #define SMB3_COMPRESS_LZ77 cpu_to_le16(0x0002) #define SMB3_COMPRESS_LZ77_HUFF cpu_to_le16(0x0003) /* Pattern scanning algorithm See MS-SMB2 3.1.4.4.1 */ -#define SMB3_COMPRESS_PATTERN cpu_to_le16(0x0004) +#define SMB3_COMPRESS_PATTERN cpu_to_le16(0x0004) /* Pattern_V1 */ /* Compression Flags */ #define SMB2_COMPRESSION_CAPABILITIES_FLAG_NONE cpu_to_le32(0x00000000) -- 2.7.4