USB: cdc.h: ncm: add missed constants and structures

Make a dedicated structure for datagram pointer entry. There is no
explicit declaration in the spec, but it's used by the host
implementation and makes the structure more clear.

Add some missed constants from the spec
Signed-off-by: NYauheni Kaliuta <yauheni.kaliuta@nokia.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

include/linux/usb/cdc.h

@@ -32,6 +32,8 @@
 
 #define USB_CDC_PROTO_EEM			7
 
+#define USB_CDC_NCM_PROTO_NTB			1
+
 /*-------------------------------------------------------------------------*/
 
 /*
@@ -325,14 +327,26 @@ struct usb_cdc_ncm_nth32 {
 #define USB_CDC_NCM_NDP32_CRC_SIGN	0x316D636E /* ncm1 */
 #define USB_CDC_NCM_NDP32_NOCRC_SIGN	0x306D636E /* ncm0 */
 
+/* 16-bit NCM Datagram Pointer Entry */
+struct usb_cdc_ncm_dpe16 {
+	__le16	wDatagramIndex;
+	__le16	wDatagramLength;
+} __attribute__((__packed__));
+
 /* 16-bit NCM Datagram Pointer Table */
 struct usb_cdc_ncm_ndp16 {
 	__le32	dwSignature;
 	__le16	wLength;
 	__le16	wNextFpIndex;
-	__u8	data[0];
+	struct	usb_cdc_ncm_dpe16 dpe16[0];
 } __attribute__ ((packed));
 
+/* 32-bit NCM Datagram Pointer Entry */
+struct usb_cdc_ncm_dpe32 {
+	__le32	wDatagramIndex;
+	__le32	wDatagramLength;
+} __attribute__((__packed__));
+
 /* 32-bit NCM Datagram Pointer Table */
 struct usb_cdc_ncm_ndp32 {
 	__le32	dwSignature;
@@ -340,7 +354,46 @@ struct usb_cdc_ncm_ndp32 {
 	__le16	wReserved6;
 	__le32	dwNextNdpIndex;
 	__le32	dwReserved12;
-	__u8	data[0];
+	struct	usb_cdc_ncm_dpe32 dpe32[0];
 } __attribute__ ((packed));
 
+/* CDC NCM subclass 3.2.1 and 3.2.2 */
+#define USB_CDC_NCM_NDP16_INDEX_MIN			0x000C
+#define USB_CDC_NCM_NDP32_INDEX_MIN			0x0010
+
+/* CDC NCM subclass 3.3.3 Datagram Formatting */
+#define USB_CDC_NCM_DATAGRAM_FORMAT_CRC			0x30
+#define USB_CDC_NCM_DATAGRAM_FORMAT_NOCRC		0X31
+
+/* CDC NCM subclass 4.2 NCM Communications Interface Protocol Code */
+#define USB_CDC_NCM_PROTO_CODE_NO_ENCAP_COMMANDS	0x00
+#define USB_CDC_NCM_PROTO_CODE_EXTERN_PROTO		0xFE
+
+/* CDC NCM subclass 5.2.1 NCM Functional Descriptor, bmNetworkCapabilities */
+#define USB_CDC_NCM_NCAP_ETH_FILTER			(1 << 0)
+#define USB_CDC_NCM_NCAP_NET_ADDRESS			(1 << 1)
+#define USB_CDC_NCM_NCAP_ENCAP_COMMAND			(1 << 2)
+#define USB_CDC_NCM_NCAP_MAX_DATAGRAM_SIZE		(1 << 3)
+#define USB_CDC_NCM_NCAP_CRC_MODE			(1 << 4)
+
+/* CDC NCM subclass Table 6-3: NTB Parameter Structure */
+#define USB_CDC_NCM_NTB16_SUPPORTED			(1 << 0)
+#define USB_CDC_NCM_NTB32_SUPPORTED			(1 << 1)
+
+/* CDC NCM subclass Table 6-3: NTB Parameter Structure */
+#define USB_CDC_NCM_NDP_ALIGN_MIN_SIZE			0x04
+#define USB_CDC_NCM_NTB_MAX_LENGTH			0x1C
+
+/* CDC NCM subclass 6.2.5 SetNtbFormat */
+#define USB_CDC_NCM_NTB16_FORMAT			0x00
+#define USB_CDC_NCM_NTB32_FORMAT			0x01
+
+/* CDC NCM subclass 6.2.7 SetNtbInputSize */
+#define USB_CDC_NCM_NTB_MIN_IN_SIZE			2048
+#define USB_CDC_NCM_NTB_MIN_OUT_SIZE			2048
+
+/* CDC NCM subclass 6.2.11 SetCrcMode */
+#define USB_CDC_NCM_CRC_NOT_APPENDED			0x00
+#define USB_CDC_NCM_CRC_APPENDED			0x01
+
 #endif /* __LINUX_USB_CDC_H */