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authorSteve French <stfrench@microsoft.com>2020-03-15 17:42:41 -0500
committerSteve French <stfrench@microsoft.com>2020-03-22 22:49:10 -0500
commit2fe4f62de4892b88c16fee7c2832eb37f1d3c4a0 (patch)
tree20bb36f977bf4b2f0f3cf896110e081bbd96214e /fs/cifs
parentcff2def598f866feb5f8072ffd77057d2ea3b5ad (diff)
downloadlinux-2fe4f62de4892b88c16fee7c2832eb37f1d3c4a0.tar.bz2
SMB3: Add new compression flags
Additional compression capabilities can now be negotiated and a new compression algorithm. Add the flags for these. See newly updated MS-SMB2 sections 3.1.4.4.1 and 2.2.3.1.3 Signed-off-by: Steve French <stfrench@microsoft.com> Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
Diffstat (limited to 'fs/cifs')
-rw-r--r--fs/cifs/smb2pdu.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
index 817bc0531536..4a7d154fffae 100644
--- a/fs/cifs/smb2pdu.h
+++ b/fs/cifs/smb2pdu.h
@@ -307,11 +307,17 @@ struct smb2_encryption_neg_context {
#define SMB3_COMPRESS_LZNT1 cpu_to_le16(0x0001)
#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)
+
+/* Compression Flags */
+#define SMB2_COMPRESSION_CAPABILITIES_FLAG_NONE cpu_to_le32(0x00000000)
+#define SMB2_COMPRESSION_CAPABILITIES_FLAG_CHAINED cpu_to_le32(0x00000001)
struct smb2_compression_capabilities_context {
__le16 ContextType; /* 3 */
__le16 DataLength;
- __u32 Reserved;
+ __u32 Flags;
__le16 CompressionAlgorithmCount;
__u16 Padding;
__u32 Reserved1;