cifs: Move more definitions into the shared area

Move SMB2_SessionSetup, SMB2_Close, SMB2_Read, SMB2_Write and
SMB2_ChangeNotify commands into smbfs_common/smb2pdu.h

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

3 files changed, 276 insertions, 226 deletions

diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 0b51372c9719..4fe49b007651 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -1260,7 +1260,7 @@ SMB2_sess_alloc_buffer(struct SMB2_sess_data *sess_data)
 		 * if reconnect, we need to send previous sess id
 		 * otherwise it is 0
 		 */
-		req->PreviousSessionId = sess_data->previous_session;
+		req->PreviousSessionId = cpu_to_le64(sess_data->previous_session);
 		req->Flags = 0; /* MBZ */
 	}
 
@@ -3234,8 +3234,8 @@ SMB2_close_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server,
 	if (rc)
 		return rc;
 
-	req->PersistentFileId = persistent_fid;
-	req->VolatileFileId = volatile_fid;
+	req->PersistentFileId = cpu_to_le64(persistent_fid);
+	req->VolatileFileId = cpu_to_le64(volatile_fid);
 	if (query_attrs)
 		req->Flags = SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB;
 	else
@@ -3598,8 +3598,8 @@ SMB2_notify_init(const unsigned int xid, struct smb_rqst *rqst,
 	if (rc)
 		return rc;
 
-	req->PersistentFileId = persistent_fid;
-	req->VolatileFileId = volatile_fid;
+	req->PersistentFileId = cpu_to_le64(persistent_fid);
+	req->VolatileFileId = cpu_to_le64(volatile_fid);
 	/* See note 354 of MS-SMB2, 64K max */
 	req->OutputBufferLength =
 		cpu_to_le32(SMB2_MAX_BUFFER_SIZE - MAX_SMB2_HDR_SIZE);
@@ -3821,8 +3821,8 @@ SMB2_flush_init(const unsigned int xid, struct smb_rqst *rqst,
 	if (rc)
 		return rc;
 
-	req->PersistentFileId = persistent_fid;
-	req->VolatileFileId = volatile_fid;
+	req->PersistentFileId = cpu_to_le64(persistent_fid);
+	req->VolatileFileId = cpu_to_le64(volatile_fid);
 
 	iov[0].iov_base = (char *)req;
 	iov[0].iov_len = total_len;
@@ -3888,7 +3888,7 @@ smb2_new_read_req(void **buf, unsigned int *total_len,
 	unsigned int remaining_bytes, int request_type)
 {
 	int rc = -EACCES;
-	struct smb2_read_plain_req *req = NULL;
+	struct smb2_read_req *req = NULL;
 	struct smb2_hdr *shdr;
 	struct TCP_Server_Info *server = io_parms->server;
 
@@ -3903,8 +3903,8 @@ smb2_new_read_req(void **buf, unsigned int *total_len,
 	shdr = &req->hdr;
 	shdr->Id.SyncId.ProcessId = cpu_to_le32(io_parms->pid);
 
-	req->PersistentFileId = io_parms->persistent_fid;
-	req->VolatileFileId = io_parms->volatile_fid;
+	req->PersistentFileId = cpu_to_le64(io_parms->persistent_fid);
+	req->VolatileFileId = cpu_to_le64(io_parms->volatile_fid);
 	req->ReadChannelInfoOffset = 0; /* reserved */
 	req->ReadChannelInfoLength = 0; /* reserved */
 	req->Channel = 0; /* reserved */
@@ -3938,7 +3938,7 @@ smb2_new_read_req(void **buf, unsigned int *total_len,
 		if (need_invalidate)
 			req->Channel = SMB2_CHANNEL_RDMA_V1;
 		req->ReadChannelInfoOffset =
-			cpu_to_le16(offsetof(struct smb2_read_plain_req, Buffer));
+			cpu_to_le16(offsetof(struct smb2_read_req, Buffer));
 		req->ReadChannelInfoLength =
 			cpu_to_le16(sizeof(struct smbd_buffer_descriptor_v1));
 		v1 = (struct smbd_buffer_descriptor_v1 *) &req->Buffer[0];
@@ -3964,8 +3964,8 @@ smb2_new_read_req(void **buf, unsigned int *total_len,
 			 */
 			shdr->SessionId = cpu_to_le64(0xFFFFFFFFFFFFFFFF);
 			shdr->Id.SyncId.TreeId = cpu_to_le32(0xFFFFFFFF);
-			req->PersistentFileId = 0xFFFFFFFFFFFFFFFF;
-			req->VolatileFileId = 0xFFFFFFFFFFFFFFFF;
+			req->PersistentFileId = cpu_to_le64(0xFFFFFFFFFFFFFFFF);
+			req->VolatileFileId = cpu_to_le64(0xFFFFFFFFFFFFFFFF);
 		}
 	}
 	if (remaining_bytes > io_parms->length)
@@ -4142,7 +4142,7 @@ SMB2_read(const unsigned int xid, struct cifs_io_parms *io_parms,
 {
 	struct smb_rqst rqst;
 	int resp_buftype, rc;
-	struct smb2_read_plain_req *req = NULL;
+	struct smb2_read_req *req = NULL;
 	struct smb2_read_rsp *rsp = NULL;
 	struct kvec iov[1];
 	struct kvec rsp_iov;
@@ -4176,19 +4176,22 @@ SMB2_read(const unsigned int xid, struct cifs_io_parms *io_parms,
 		if (rc != -ENODATA) {
 			cifs_stats_fail_inc(io_parms->tcon, SMB2_READ_HE);
 			cifs_dbg(VFS, "Send error in read = %d\n", rc);
-			trace_smb3_read_err(xid, req->PersistentFileId,
+			trace_smb3_read_err(xid,
+					    le64_to_cpu(req->PersistentFileId),
 					    io_parms->tcon->tid, ses->Suid,
 					    io_parms->offset, io_parms->length,
 					    rc);
 		} else
-			trace_smb3_read_done(xid, req->PersistentFileId,
-				    io_parms->tcon->tid, ses->Suid,
-				    io_parms->offset, 0);
+			trace_smb3_read_done(xid,
+					     le64_to_cpu(req->PersistentFileId),
+					     io_parms->tcon->tid, ses->Suid,
+					     io_parms->offset, 0);
 		free_rsp_buf(resp_buftype, rsp_iov.iov_base);
 		cifs_small_buf_release(req);
 		return rc == -ENODATA ? 0 : rc;
 	} else
-		trace_smb3_read_done(xid, req->PersistentFileId,
+		trace_smb3_read_done(xid,
+				     le64_to_cpu(req->PersistentFileId),
 				    io_parms->tcon->tid, ses->Suid,
 				    io_parms->offset, io_parms->length);
 
@@ -4330,8 +4333,8 @@ smb2_async_writev(struct cifs_writedata *wdata,
 	shdr = (struct smb2_hdr *)req;
 	shdr->Id.SyncId.ProcessId = cpu_to_le32(wdata->cfile->pid);
 
-	req->PersistentFileId = wdata->cfile->fid.persistent_fid;
-	req->VolatileFileId = wdata->cfile->fid.volatile_fid;
+	req->PersistentFileId = cpu_to_le64(wdata->cfile->fid.persistent_fid);
+	req->VolatileFileId = cpu_to_le64(wdata->cfile->fid.volatile_fid);
 	req->WriteChannelInfoOffset = 0;
 	req->WriteChannelInfoLength = 0;
 	req->Channel = 0;
@@ -4428,7 +4431,8 @@ smb2_async_writev(struct cifs_writedata *wdata,
 			     wdata, flags, &wdata->credits);
 
 	if (rc) {
-		trace_smb3_write_err(0 /* no xid */, req->PersistentFileId,
+		trace_smb3_write_err(0 /* no xid */,
+				     le64_to_cpu(req->PersistentFileId),
 				     tcon->tid, tcon->ses->Suid, wdata->offset,
 				     wdata->bytes, rc);
 		kref_put(&wdata->refcount, release);
@@ -4481,8 +4485,8 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms,
 
 	req->hdr.Id.SyncId.ProcessId = cpu_to_le32(io_parms->pid);
 
-	req->PersistentFileId = io_parms->persistent_fid;
-	req->VolatileFileId = io_parms->volatile_fid;
+	req->PersistentFileId = cpu_to_le64(io_parms->persistent_fid);
+	req->VolatileFileId = cpu_to_le64(io_parms->volatile_fid);
 	req->WriteChannelInfoOffset = 0;
 	req->WriteChannelInfoLength = 0;
 	req->Channel = 0;
@@ -4510,7 +4514,8 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms,
 	rsp = (struct smb2_write_rsp *)rsp_iov.iov_base;
 
 	if (rc) {
-		trace_smb3_write_err(xid, req->PersistentFileId,
+		trace_smb3_write_err(xid,
+				     le64_to_cpu(req->PersistentFileId),
 				     io_parms->tcon->tid,
 				     io_parms->tcon->ses->Suid,
 				     io_parms->offset, io_parms->length, rc);
@@ -4518,10 +4523,11 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms,
 		cifs_dbg(VFS, "Send error in write = %d\n", rc);
 	} else {
 		*nbytes = le32_to_cpu(rsp->DataLength);
-		trace_smb3_write_done(xid, req->PersistentFileId,
-				     io_parms->tcon->tid,
-				     io_parms->tcon->ses->Suid,
-				     io_parms->offset, *nbytes);
+		trace_smb3_write_done(xid,
+				      le64_to_cpu(req->PersistentFileId),
+				      io_parms->tcon->tid,
+				      io_parms->tcon->ses->Suid,
+				      io_parms->offset, *nbytes);
 	}
 
 	cifs_small_buf_release(req);
diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
index 2a95768e33b4..56f3cc568028 100644
--- a/fs/cifs/smb2pdu.h
+++ b/fs/cifs/smb2pdu.h
@@ -115,48 +115,6 @@ struct share_redirect_error_context_rsp {
 	/* __u8 ResourceName[] */ /* Name of share as counted Unicode string */
 } __packed;
 
-/* Flags */
-#define SMB2_SESSION_REQ_FLAG_BINDING		0x01
-#define SMB2_SESSION_REQ_FLAG_ENCRYPT_DATA	0x04
-
-struct smb2_sess_setup_req {
-	struct smb2_hdr hdr;
-	__le16 StructureSize; /* Must be 25 */
-	__u8   Flags;
-	__u8   SecurityMode;
-	__le32 Capabilities;
-	__le32 Channel;
-	__le16 SecurityBufferOffset;
-	__le16 SecurityBufferLength;
-	__u64 PreviousSessionId;
-	__u8   Buffer[1];	/* variable length GSS security buffer */
-} __packed;
-
-/* Currently defined SessionFlags */
-#define SMB2_SESSION_FLAG_IS_GUEST	0x0001
-#define SMB2_SESSION_FLAG_IS_NULL	0x0002
-#define SMB2_SESSION_FLAG_ENCRYPT_DATA	0x0004
-struct smb2_sess_setup_rsp {
-	struct smb2_hdr hdr;
-	__le16 StructureSize; /* Must be 9 */
-	__le16 SessionFlags;
-	__le16 SecurityBufferOffset;
-	__le16 SecurityBufferLength;
-	__u8   Buffer[1];	/* variable length GSS security buffer */
-} __packed;
-
-struct smb2_logoff_req {
-	struct smb2_hdr hdr;
-	__le16 StructureSize;	/* Must be 4 */
-	__le16 Reserved;
-} __packed;
-
-struct smb2_logoff_rsp {
-	struct smb2_hdr hdr;
-	__le16 StructureSize;	/* Must be 4 */
-	__le16 Reserved;
-} __packed;
-
 /* File Attrubutes */
 #define FILE_ATTRIBUTE_READONLY			0x00000001
 #define FILE_ATTRIBUTE_HIDDEN			0x00000002
@@ -720,161 +678,6 @@ struct smb2_ioctl_rsp {
 	/* char * buffer[] */
 } __packed;
 
-/* Currently defined values for close flags */
-#define SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB	cpu_to_le16(0x0001)
-struct smb2_close_req {
-	struct smb2_hdr hdr;
-	__le16 StructureSize;	/* Must be 24 */
-	__le16 Flags;
-	__le32 Reserved;
-	__u64  PersistentFileId; /* opaque endianness */
-	__u64  VolatileFileId; /* opaque endianness */
-} __packed;
-
-/*
- * Maximum size of a SMB2_CLOSE response is 64 (smb2 header) + 60 (data)
- */
-#define MAX_SMB2_CLOSE_RESPONSE_SIZE 124
-
-struct smb2_close_rsp {
-	struct smb2_hdr hdr;
-	__le16 StructureSize; /* 60 */
-	__le16 Flags;
-	__le32 Reserved;
-	__le64 CreationTime;
-	__le64 LastAccessTime;
-	__le64 LastWriteTime;
-	__le64 ChangeTime;
-	__le64 AllocationSize;	/* Beginning of FILE_STANDARD_INFO equivalent */
-	__le64 EndOfFile;
-	__le32 Attributes;
-} __packed;
-
-struct smb2_flush_req {
-	struct smb2_hdr hdr;
-	__le16 StructureSize;	/* Must be 24 */
-	__le16 Reserved1;
-	__le32 Reserved2;
-	__u64  PersistentFileId; /* opaque endianness */
-	__u64  VolatileFileId; /* opaque endianness */
-} __packed;
-
-struct smb2_flush_rsp {
-	struct smb2_hdr hdr;
-	__le16 StructureSize;
-	__le16 Reserved;
-} __packed;
-
-/* For read request Flags field below, following flag is defined for SMB3.02 */
-#define SMB2_READFLAG_READ_UNBUFFERED	0x01
-#define SMB2_READFLAG_REQUEST_COMPRESSED 0x02 /* See MS-SMB2 2.2.19 */
-
-/* Channel field for read and write: exactly one of following flags can be set*/
-#define SMB2_CHANNEL_NONE	cpu_to_le32(0x00000000)
-#define SMB2_CHANNEL_RDMA_V1	cpu_to_le32(0x00000001) /* SMB3 or later */
-#define SMB2_CHANNEL_RDMA_V1_INVALIDATE cpu_to_le32(0x00000002) /* >= SMB3.02 */
-#define SMB2_CHANNEL_RDMA_TRANSFORM cpu_to_le32(0x00000003) /* >= SMB3.02, only used on write */
-
-/* SMB2 read request without RFC1001 length at the beginning */
-struct smb2_read_plain_req {
-	struct smb2_hdr hdr;
-	__le16 StructureSize; /* Must be 49 */
-	__u8   Padding; /* offset from start of SMB2 header to place read */
-	__u8   Flags; /* MBZ unless SMB3.02 or later */
-	__le32 Length;
-	__le64 Offset;
-	__u64  PersistentFileId; /* opaque endianness */
-	__u64  VolatileFileId; /* opaque endianness */
-	__le32 MinimumCount;
-	__le32 Channel; /* MBZ except for SMB3 or later */
-	__le32 RemainingBytes;
-	__le16 ReadChannelInfoOffset;
-	__le16 ReadChannelInfoLength;
-	__u8   Buffer[1];
-} __packed;
-
-/* Read flags */
-#define SMB2_READFLAG_RESPONSE_NONE	0x00000000
-#define SMB2_READFLAG_RESPONSE_RDMA_TRANSFORM	0x00000001
-
-struct smb2_read_rsp {
-	struct smb2_hdr hdr;
-	__le16 StructureSize; /* Must be 17 */
-	__u8   DataOffset;
-	__u8   Reserved;
-	__le32 DataLength;
-	__le32 DataRemaining;
-	__u32  Flags;
-	__u8   Buffer[1];
-} __packed;
-
-/* For write request Flags field below the following flags are defined: */
-#define SMB2_WRITEFLAG_WRITE_THROUGH	0x00000001	/* SMB2.1 or later */
-#define SMB2_WRITEFLAG_WRITE_UNBUFFERED	0x00000002	/* SMB3.02 or later */
-
-struct smb2_write_req {
-	struct smb2_hdr hdr;
-	__le16 StructureSize; /* Must be 49 */
-	__le16 DataOffset; /* offset from start of SMB2 header to write data */
-	__le32 Length;
-	__le64 Offset;
-	__u64  PersistentFileId; /* opaque endianness */
-	__u64  VolatileFileId; /* opaque endianness */
-	__le32 Channel; /* MBZ unless SMB3.02 or later */
-	__le32 RemainingBytes;
-	__le16 WriteChannelInfoOffset;
-	__le16 WriteChannelInfoLength;
-	__le32 Flags;
-	__u8   Buffer[1];
-} __packed;
-
-struct smb2_write_rsp {
-	struct smb2_hdr hdr;
-	__le16 StructureSize; /* Must be 17 */
-	__u8   DataOffset;
-	__u8   Reserved;
-	__le32 DataLength;
-	__le32 DataRemaining;
-	__u32  Reserved2;
-	__u8   Buffer[1];
-} __packed;
-
-/* notify flags */
-#define SMB2_WATCH_TREE			0x0001
-
-/* notify completion filter flags. See MS-FSCC 2.6 and MS-SMB2 2.2.35 */
-#define FILE_NOTIFY_CHANGE_FILE_NAME		0x00000001
-#define FILE_NOTIFY_CHANGE_DIR_NAME		0x00000002
-#define FILE_NOTIFY_CHANGE_ATTRIBUTES		0x00000004
-#define FILE_NOTIFY_CHANGE_SIZE			0x00000008
-#define FILE_NOTIFY_CHANGE_LAST_WRITE		0x00000010
-#define FILE_NOTIFY_CHANGE_LAST_ACCESS		0x00000020
-#define FILE_NOTIFY_CHANGE_CREATION		0x00000040
-#define FILE_NOTIFY_CHANGE_EA			0x00000080
-#define FILE_NOTIFY_CHANGE_SECURITY		0x00000100
-#define FILE_NOTIFY_CHANGE_STREAM_NAME		0x00000200
-#define FILE_NOTIFY_CHANGE_STREAM_SIZE		0x00000400
-#define FILE_NOTIFY_CHANGE_STREAM_WRITE		0x00000800
-
-struct smb2_change_notify_req {
-	struct smb2_hdr hdr;
-	__le16	StructureSize;
-	__le16	Flags;
-	__le32	OutputBufferLength;
-	__u64	PersistentFileId; /* opaque endianness */
-	__u64	VolatileFileId; /* opaque endianness */
-	__le32	CompletionFilter;
-	__u32	Reserved;
-} __packed;
-
-struct smb2_change_notify_rsp {
-	struct smb2_hdr hdr;
-	__le16	StructureSize;  /* Must be 9 */
-	__le16	OutputBufferOffset;
-	__le32	OutputBufferLength;
-	__u8	Buffer[1]; /* array of file notify structs */
-} __packed;
-
 #define SMB2_LOCKFLAG_SHARED_LOCK	0x0001
 #define SMB2_LOCKFLAG_EXCLUSIVE_LOCK	0x0002
 #define SMB2_LOCKFLAG_UNLOCK		0x0004
diff --git a/fs/smbfs_common/smb2pdu.h b/fs/smbfs_common/smb2pdu.h
index a1f661a1b89d..0d9c3ebdb773 100644
--- a/fs/smbfs_common/smb2pdu.h
+++ b/fs/smbfs_common/smb2pdu.h
@@ -544,4 +544,245 @@ struct smb2_negotiate_rsp {
 } __packed;
 
 
+/*
+ * SMB2_SESSION_SETUP  See MS-SMB2 section 2.2.5
+ */
+/* Flags */
+#define SMB2_SESSION_REQ_FLAG_BINDING		0x01
+#define SMB2_SESSION_REQ_FLAG_ENCRYPT_DATA	0x04
+
+struct smb2_sess_setup_req {
+	struct smb2_hdr hdr;
+	__le16 StructureSize; /* Must be 25 */
+	__u8   Flags;
+	__u8   SecurityMode;
+	__le32 Capabilities;
+	__le32 Channel;
+	__le16 SecurityBufferOffset;
+	__le16 SecurityBufferLength;
+	__le64 PreviousSessionId;
+	__u8   Buffer[1];	/* variable length GSS security buffer */
+} __packed;
+
+/* Currently defined SessionFlags */
+#define SMB2_SESSION_FLAG_IS_GUEST        0x0001
+#define SMB2_SESSION_FLAG_IS_GUEST_LE     cpu_to_le16(0x0001)
+#define SMB2_SESSION_FLAG_IS_NULL         0x0002
+#define SMB2_SESSION_FLAG_IS_NULL_LE      cpu_to_le16(0x0002)
+#define SMB2_SESSION_FLAG_ENCRYPT_DATA    0x0004
+#define SMB2_SESSION_FLAG_ENCRYPT_DATA_LE cpu_to_le16(0x0004)
+
+struct smb2_sess_setup_rsp {
+	struct smb2_hdr hdr;
+	__le16 StructureSize; /* Must be 9 */
+	__le16 SessionFlags;
+	__le16 SecurityBufferOffset;
+	__le16 SecurityBufferLength;
+	__u8   Buffer[1];	/* variable length GSS security buffer */
+} __packed;
+
+
+/*
+ * SMB2_LOGOFF  See MS-SMB2 section 2.2.7
+ */
+struct smb2_logoff_req {
+	struct smb2_hdr hdr;
+	__le16 StructureSize;	/* Must be 4 */
+	__le16 Reserved;
+} __packed;
+
+struct smb2_logoff_rsp {
+	struct smb2_hdr hdr;
+	__le16 StructureSize;	/* Must be 4 */
+	__le16 Reserved;
+} __packed;
+
+
+/*
+ * SMB2_CLOSE  See MS-SMB2 section 2.2.15
+ */
+/* Currently defined values for close flags */
+#define SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB	cpu_to_le16(0x0001)
+struct smb2_close_req {
+	struct smb2_hdr hdr;
+	__le16 StructureSize;	/* Must be 24 */
+	__le16 Flags;
+	__le32 Reserved;
+	__le64  PersistentFileId; /* opaque endianness */
+	__le64  VolatileFileId; /* opaque endianness */
+} __packed;
+
+/*
+ * Maximum size of a SMB2_CLOSE response is 64 (smb2 header) + 60 (data)
+ */
+#define MAX_SMB2_CLOSE_RESPONSE_SIZE 124
+
+struct smb2_close_rsp {
+	struct smb2_hdr hdr;
+	__le16 StructureSize; /* 60 */
+	__le16 Flags;
+	__le32 Reserved;
+	__le64 CreationTime;
+	__le64 LastAccessTime;
+	__le64 LastWriteTime;
+	__le64 ChangeTime;
+	__le64 AllocationSize;	/* Beginning of FILE_STANDARD_INFO equivalent */
+	__le64 EndOfFile;
+	__le32 Attributes;
+} __packed;
+
+
+/*
+ * SMB2_READ  See MS-SMB2 section 2.2.19
+ */
+/* For read request Flags field below, following flag is defined for SMB3.02 */
+#define SMB2_READFLAG_READ_UNBUFFERED	0x01
+#define SMB2_READFLAG_REQUEST_COMPRESSED 0x02 /* See MS-SMB2 2.2.19 */
+
+/* Channel field for read and write: exactly one of following flags can be set*/
+#define SMB2_CHANNEL_NONE               cpu_to_le32(0x00000000)
+#define SMB2_CHANNEL_RDMA_V1            cpu_to_le32(0x00000001)
+#define SMB2_CHANNEL_RDMA_V1_INVALIDATE cpu_to_le32(0x00000002)
+#define SMB2_CHANNEL_RDMA_TRANSFORM     cpu_to_le32(0x00000003)
+
+/* SMB2 read request without RFC1001 length at the beginning */
+struct smb2_read_req {
+	struct smb2_hdr hdr;
+	__le16 StructureSize; /* Must be 49 */
+	__u8   Padding; /* offset from start of SMB2 header to place read */
+	__u8   Flags; /* MBZ unless SMB3.02 or later */
+	__le32 Length;
+	__le64 Offset;
+	__le64  PersistentFileId;
+	__le64  VolatileFileId;
+	__le32 MinimumCount;
+	__le32 Channel; /* MBZ except for SMB3 or later */
+	__le32 RemainingBytes;
+	__le16 ReadChannelInfoOffset;
+	__le16 ReadChannelInfoLength;
+	__u8   Buffer[1];
+} __packed;
+
+/* Read flags */
+#define SMB2_READFLAG_RESPONSE_NONE            cpu_to_le32(0x00000000)
+#define SMB2_READFLAG_RESPONSE_RDMA_TRANSFORM  cpu_to_le32(0x00000001)
+
+struct smb2_read_rsp {
+	struct smb2_hdr hdr;
+	__le16 StructureSize; /* Must be 17 */
+	__u8   DataOffset;
+	__u8   Reserved;
+	__le32 DataLength;
+	__le32 DataRemaining;
+	__le32 Flags;
+	__u8   Buffer[1];
+} __packed;
+
+
+/*
+ * SMB2_WRITE  See MS-SMB2 section 2.2.21
+ */
+/* For write request Flags field below the following flags are defined: */
+#define SMB2_WRITEFLAG_WRITE_THROUGH	0x00000001	/* SMB2.1 or later */
+#define SMB2_WRITEFLAG_WRITE_UNBUFFERED	0x00000002	/* SMB3.02 or later */
+
+struct smb2_write_req {
+	struct smb2_hdr hdr;
+	__le16 StructureSize; /* Must be 49 */
+	__le16 DataOffset; /* offset from start of SMB2 header to write data */
+	__le32 Length;
+	__le64 Offset;
+	__le64  PersistentFileId; /* opaque endianness */
+	__le64  VolatileFileId; /* opaque endianness */
+	__le32 Channel; /* MBZ unless SMB3.02 or later */
+	__le32 RemainingBytes;
+	__le16 WriteChannelInfoOffset;
+	__le16 WriteChannelInfoLength;
+	__le32 Flags;
+	__u8   Buffer[1];
+} __packed;
+
+struct smb2_write_rsp {
+	struct smb2_hdr hdr;
+	__le16 StructureSize; /* Must be 17 */
+	__u8   DataOffset;
+	__u8   Reserved;
+	__le32 DataLength;
+	__le32 DataRemaining;
+	__u32  Reserved2;
+	__u8   Buffer[1];
+} __packed;
+
+
+/*
+ * SMB2_FLUSH  See MS-SMB2 section 2.2.17
+ */
+struct smb2_flush_req {
+	struct smb2_hdr hdr;
+	__le16 StructureSize;	/* Must be 24 */
+	__le16 Reserved1;
+	__le32 Reserved2;
+	__le64  PersistentFileId;
+	__le64  VolatileFileId;
+} __packed;
+
+struct smb2_flush_rsp {
+	struct smb2_hdr hdr;
+	__le16 StructureSize;
+	__le16 Reserved;
+} __packed;
+
+
+/*
+ * SMB2_NOTIFY  See MS-SMB2 section 2.2.35
+ */
+/* notify flags */
+#define SMB2_WATCH_TREE			0x0001
+
+/* notify completion filter flags. See MS-FSCC 2.6 and MS-SMB2 2.2.35 */
+#define FILE_NOTIFY_CHANGE_FILE_NAME		0x00000001
+#define FILE_NOTIFY_CHANGE_DIR_NAME		0x00000002
+#define FILE_NOTIFY_CHANGE_ATTRIBUTES		0x00000004
+#define FILE_NOTIFY_CHANGE_SIZE			0x00000008
+#define FILE_NOTIFY_CHANGE_LAST_WRITE		0x00000010
+#define FILE_NOTIFY_CHANGE_LAST_ACCESS		0x00000020
+#define FILE_NOTIFY_CHANGE_CREATION		0x00000040
+#define FILE_NOTIFY_CHANGE_EA			0x00000080
+#define FILE_NOTIFY_CHANGE_SECURITY		0x00000100
+#define FILE_NOTIFY_CHANGE_STREAM_NAME		0x00000200
+#define FILE_NOTIFY_CHANGE_STREAM_SIZE		0x00000400
+#define FILE_NOTIFY_CHANGE_STREAM_WRITE		0x00000800
+
+/* SMB2 Notify Action Flags */
+#define FILE_ACTION_ADDED                       0x00000001
+#define FILE_ACTION_REMOVED                     0x00000002
+#define FILE_ACTION_MODIFIED                    0x00000003
+#define FILE_ACTION_RENAMED_OLD_NAME            0x00000004
+#define FILE_ACTION_RENAMED_NEW_NAME            0x00000005
+#define FILE_ACTION_ADDED_STREAM                0x00000006
+#define FILE_ACTION_REMOVED_STREAM              0x00000007
+#define FILE_ACTION_MODIFIED_STREAM             0x00000008
+#define FILE_ACTION_REMOVED_BY_DELETE           0x00000009
+
+struct smb2_change_notify_req {
+	struct smb2_hdr hdr;
+	__le16	StructureSize;
+	__le16	Flags;
+	__le32	OutputBufferLength;
+	__le64	PersistentFileId; /* opaque endianness */
+	__le64	VolatileFileId; /* opaque endianness */
+	__le32	CompletionFilter;
+	__u32	Reserved;
+} __packed;
+
+struct smb2_change_notify_rsp {
+	struct smb2_hdr hdr;
+	__le16	StructureSize;  /* Must be 9 */
+	__le16	OutputBufferOffset;
+	__le32	OutputBufferLength;
+	__u8	Buffer[1]; /* array of file notify structs */
+} __packed;
+
+
+
 #endif				/* _COMMON_SMB2PDU_H */