Commit 3563a6f4 authored by Steve French's avatar Steve French
Browse files

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: default avatarSteve French <stfrench@microsoft.com>
Reviewed-by: default avatarAurelien Aptel <aaptel@suse.com>
parent adbb2daf

fs/cifs/smb2pdu.h

+11 −2
Original line number Diff line number Diff line
@@ -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)

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