smb: common: add SMB3_COMPRESS_MAX_ALGS

Set it to number of currently defined algorithms (6 as of now).

Signed-off-by: Enzo Matsumiya <[email protected]>
Signed-off-by: Steve French <[email protected]>

Author: ematsumiya

fs/smb/common/smb2pdu.h

@@ -510,6 +510,8 @@ struct smb2_encryption_neg_context {
 /* Pattern scanning algorithm See MS-SMB2 3.1.4.4.1 */
 #define SMB3_COMPRESS_PATTERN	cpu_to_le16(0x0004) /* Pattern_V1 */
 #define SMB3_COMPRESS_LZ4	cpu_to_le16(0x0005)
+/* Account for NONE for easier array indexing */
+#define SMB3_COMPRESS_MAX_ALGS	6
 
 /* Compression Flags */
 #define SMB2_COMPRESSION_CAPABILITIES_FLAG_NONE		cpu_to_le32(0x00000000)