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-rw-r--r--fs/cifs/smb2pdu.h13
1 files changed, 11 insertions, 2 deletions
diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
index 10acf90f858d..3b0e6acf9d7d 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)