CIFS: SMB2/SMB3 Copy offload support (refcopy) phase 1

[~andy/linux] / fs / cifs / smb2pdu.h

diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
index 36b0d37ea69b8d9f7bab7d1e1e3fcd167afe34e3..b50a129572cd58149eacb2c2d93fa125f34ef9ff 100644 (file)
--- a/fs/cifs/smb2pdu.h
+++ b/fs/cifs/smb2pdu.h
@@ -150,6 +150,20 @@ struct smb2_err_rsp {
        __u8   ErrorData[1];  /* variable length */
 } __packed;
 
+struct smb2_symlink_err_rsp {
+       __le32 SymLinkLength;
+       __le32 SymLinkErrorTag;
+       __le32 ReparseTag;
+       __le16 ReparseDataLength;
+       __le16 UnparsedPathLength;
+       __le16 SubstituteNameOffset;
+       __le16 SubstituteNameLength;
+       __le16 PrintNameOffset;
+       __le16 PrintNameLength;
+       __le32 Flags;
+       __u8  PathBuffer[0];
+} __packed;
+
 #define SMB2_CLIENT_GUID_SIZE 16
 
 extern __u8 cifs_client_guid[SMB2_CLIENT_GUID_SIZE];
@@ -462,6 +476,10 @@ struct create_context {
        __u8 Buffer[0];
 } __packed;
 
+#define SMB2_LEASE_READ_CACHING_HE     0x01
+#define SMB2_LEASE_HANDLE_CACHING_HE   0x02
+#define SMB2_LEASE_WRITE_CACHING_HE    0x04
+
 #define SMB2_LEASE_NONE                        __constant_cpu_to_le32(0x00)
 #define SMB2_LEASE_READ_CACHING                __constant_cpu_to_le32(0x01)
 #define SMB2_LEASE_HANDLE_CACHING      __constant_cpu_to_le32(0x02)
@@ -479,12 +497,31 @@ struct lease_context {
        __le64 LeaseDuration;
 } __packed;
 
+struct lease_context_v2 {
+       __le64 LeaseKeyLow;
+       __le64 LeaseKeyHigh;
+       __le32 LeaseState;
+       __le32 LeaseFlags;
+       __le64 LeaseDuration;
+       __le64 ParentLeaseKeyLow;
+       __le64 ParentLeaseKeyHigh;
+       __le16 Epoch;
+       __le16 Reserved;
+} __packed;
+
 struct create_lease {
        struct create_context ccontext;
        __u8   Name[8];
        struct lease_context lcontext;
 } __packed;
 
+struct create_lease_v2 {
+       struct create_context ccontext;
+       __u8   Name[8];
+       struct lease_context_v2 lcontext;
+       __u8   Pad[4];
+} __packed;
+
 struct create_durable {
        struct create_context ccontext;
        __u8   Name[8];
@@ -497,9 +534,16 @@ struct create_durable {
        } Data;
 } __packed;
 
+#define COPY_CHUNK_RES_KEY_SIZE        24
+struct resume_key_req {
+       char ResumeKey[COPY_CHUNK_RES_KEY_SIZE];
+       __le32  ContextLength;  /* MBZ */
+       char    Context[0];     /* ignored, Windows sets to 4 bytes of zero */
+} __packed;
+
 /* this goes in the ioctl buffer when doing a copychunk request */
 struct copychunk_ioctl {
-       char SourceKey[24];
+       char SourceKey[COPY_CHUNK_RES_KEY_SIZE];
        __le32 ChunkCount; /* we are only sending 1 */
        __le32 Reserved;
        /* array will only be one chunk long for us */
@@ -509,6 +553,12 @@ struct copychunk_ioctl {
        __u32 Reserved2;
 } __packed;
 
+struct copychunk_ioctl_rsp {
+       __le32 ChunksWritten;
+       __le32 ChunkBytesWritten;
+       __le32 TotalBytesWritten;
+} __packed;
+
 /* Response and Request are the same format */
 struct validate_negotiate_info {
        __le32 Capabilities;
@@ -532,6 +582,10 @@ struct network_interface_info_ioctl_rsp {
 
 #define NO_FILE_ID 0xFFFFFFFFFFFFFFFFULL /* general ioctls to srv not to file */
 
+struct compress_ioctl {
+       __le16 CompressionState; /* See cifspdu.h for possible flag values */
+} __packed;
+
 struct smb2_ioctl_req {
        struct smb2_hdr hdr;
        __le16 StructureSize;   /* Must be 57 */
@@ -547,7 +601,7 @@ struct smb2_ioctl_req {
        __le32 MaxOutputResponse;
        __le32 Flags;
        __u32  Reserved2;
-       char   Buffer[0];
+       __u8   Buffer[0];
 } __packed;
 
 struct smb2_ioctl_rsp {
@@ -833,14 +887,16 @@ struct smb2_lease_ack {
 
 /* File System Information Classes */
 #define FS_VOLUME_INFORMATION          1 /* Query */
-#define FS_LABEL_INFORMATION           2 /* Set */
+#define FS_LABEL_INFORMATION           2 /* Local only */
 #define FS_SIZE_INFORMATION            3 /* Query */
 #define FS_DEVICE_INFORMATION          4 /* Query */
 #define FS_ATTRIBUTE_INFORMATION       5 /* Query */
 #define FS_CONTROL_INFORMATION         6 /* Query, Set */
 #define FS_FULL_SIZE_INFORMATION       7 /* Query */
 #define FS_OBJECT_ID_INFORMATION       8 /* Query, Set */
-#define FS_DRIVER_PATH_INFORMATION     9 /* Query */
+#define FS_DRIVER_PATH_INFORMATION     9 /* Local only */
+#define FS_VOLUME_FLAGS_INFORMATION    10 /* Local only */
+#define FS_SECTOR_SIZE_INFORMATION     11 /* SMB3 or later. Query */
 
 struct smb2_fs_full_size_info {
        __le64 TotalAllocationUnits;
@@ -850,6 +906,22 @@ struct smb2_fs_full_size_info {
        __le32 BytesPerSector;
 } __packed;
 
+#define SSINFO_FLAGS_ALIGNED_DEVICE            0x00000001
+#define SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE 0x00000002
+#define SSINFO_FLAGS_NO_SEEK_PENALTY           0x00000004
+#define SSINFO_FLAGS_TRIM_ENABLED              0x00000008
+
+/* sector size info struct */
+struct smb3_fs_ss_info {
+       __le32 LogicalBytesPerSector;
+       __le32 PhysicalBytesPerSectorForAtomicity;
+       __le32 PhysicalBytesPerSectorForPerf;
+       __le32 FileSystemEffectivePhysicalBytesPerSectorForAtomicity;
+       __le32 Flags;
+       __le32 ByteOffsetForSectorAlignment;
+       __le32 ByteOffsetForPartitionAlignment;
+} __packed;
+
 /* partial list of QUERY INFO levels */
 #define FILE_DIRECTORY_INFORMATION     1
 #define FILE_FULL_DIRECTORY_INFORMATION 2