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smb3: minor update to compression header definitions

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MS-SMB2 specification was updated in March.  Make minor additions
and corrections to compression related definitions in smb2pdu.h

Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
This commit is contained in:
Steve French 2020-05-30 17:10:16 -05:00
parent adbb2dafe7
commit 3563a6f468
1 changed files with 11 additions and 2 deletions
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13
fs/cifs/smb2pdu.h
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@ -143,8 +143,17 @@ struct smb2_transform_hdr {
__u64 SessionId; __u64 SessionId;
} __packed; } __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 */ /* See MS-SMB2 2.2.42.1 */
struct compression_playload_header { struct compression_payload_header {
__le16 AlgorithmId; __le16 AlgorithmId;
__le16 Reserved; __le16 Reserved;
__le32 Length; __le32 Length;
@ -333,7 +342,7 @@ struct smb2_encryption_neg_context {
#define SMB3_COMPRESS_LZ77 cpu_to_le16(0x0002) #define SMB3_COMPRESS_LZ77 cpu_to_le16(0x0002)
#define SMB3_COMPRESS_LZ77_HUFF cpu_to_le16(0x0003) #define SMB3_COMPRESS_LZ77_HUFF cpu_to_le16(0x0003)
/* Pattern scanning algorithm See MS-SMB2 3.1.4.4.1 */ /* 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 */ /* Compression Flags */
#define SMB2_COMPRESSION_CAPABILITIES_FLAG_NONE cpu_to_le32(0x00000000) #define SMB2_COMPRESSION_CAPABILITIES_FLAG_NONE cpu_to_le32(0x00000000)