From: Steve French <stfrench@microsoft.com>
Date: Sat, 30 May 2020 17:10:16 -0500
Subject: [PATCH] smb3: minor update to compression header definitions
Git-commit: 3563a6f4683eb08f9a437e028dd027ac31092381
References: bsc#1190317
Patch-mainline: v5.8-rc1
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>
Acked-by: Enzo Matsumiya <ematsumiya@suse.de>
---
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 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)
--
2.33.0