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✏️ cdc.h
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * USB Communications Device Class (CDC) definitions * * CDC says how to talk to lots of different types of network adapters, * notably ethernet adapters and various modems. It's used mostly with * firmware based USB peripherals. */ #ifndef __UAPI_LINUX_USB_CDC_H #define __UAPI_LINUX_USB_CDC_H #include <linux/types.h> #define USB_CDC_SUBCLASS_ACM 0x02 #define USB_CDC_SUBCLASS_ETHERNET 0x06 #define USB_CDC_SUBCLASS_WHCM 0x08 #define USB_CDC_SUBCLASS_DMM 0x09 #define USB_CDC_SUBCLASS_MDLM 0x0a #define USB_CDC_SUBCLASS_OBEX 0x0b #define USB_CDC_SUBCLASS_EEM 0x0c #define USB_CDC_SUBCLASS_NCM 0x0d #define USB_CDC_SUBCLASS_MBIM 0x0e #define USB_CDC_PROTO_NONE 0 #define USB_CDC_ACM_PROTO_AT_V25TER 1 #define USB_CDC_ACM_PROTO_AT_PCCA101 2 #define USB_CDC_ACM_PROTO_AT_PCCA101_WAKE 3 #define USB_CDC_ACM_PROTO_AT_GSM 4 #define USB_CDC_ACM_PROTO_AT_3G 5 #define USB_CDC_ACM_PROTO_AT_CDMA 6 #define USB_CDC_ACM_PROTO_VENDOR 0xff #define USB_CDC_PROTO_EEM 7 #define USB_CDC_NCM_PROTO_NTB 1 #define USB_CDC_MBIM_PROTO_NTB 2 /*-------------------------------------------------------------------------*/ /* * Class-Specific descriptors ... there are a couple dozen of them */ #define USB_CDC_HEADER_TYPE 0x00 /* header_desc */ #define USB_CDC_CALL_MANAGEMENT_TYPE 0x01 /* call_mgmt_descriptor */ #define USB_CDC_ACM_TYPE 0x02 /* acm_descriptor */ #define USB_CDC_UNION_TYPE 0x06 /* union_desc */ #define USB_CDC_COUNTRY_TYPE 0x07 #define USB_CDC_NETWORK_TERMINAL_TYPE 0x0a /* network_terminal_desc */ #define USB_CDC_ETHERNET_TYPE 0x0f /* ether_desc */ #define USB_CDC_WHCM_TYPE 0x11 #define USB_CDC_MDLM_TYPE 0x12 /* mdlm_desc */ #define USB_CDC_MDLM_DETAIL_TYPE 0x13 /* mdlm_detail_desc */ #define USB_CDC_DMM_TYPE 0x14 #define USB_CDC_OBEX_TYPE 0x15 #define USB_CDC_NCM_TYPE 0x1a #define USB_CDC_MBIM_TYPE 0x1b #define USB_CDC_MBIM_EXTENDED_TYPE 0x1c /* "Header Functional Descriptor" from CDC spec 5.2.3.1 */ struct usb_cdc_header_desc { __u8 bLength; __u8 bDescriptorType; __u8 bDescriptorSubType; __le16 bcdCDC; } __attribute__ ((packed)); /* "Call Management Descriptor" from CDC spec 5.2.3.2 */ struct usb_cdc_call_mgmt_descriptor { __u8 bLength; __u8 bDescriptorType; __u8 bDescriptorSubType; __u8 bmCapabilities; #define USB_CDC_CALL_MGMT_CAP_CALL_MGMT 0x01 #define USB_CDC_CALL_MGMT_CAP_DATA_INTF 0x02 __u8 bDataInterface; } __attribute__ ((packed)); /* "Abstract Control Management Descriptor" from CDC spec 5.2.3.3 */ struct usb_cdc_acm_descriptor { __u8 bLength; __u8 bDescriptorType; __u8 bDescriptorSubType; __u8 bmCapabilities; } __attribute__ ((packed)); /* capabilities from 5.2.3.3 */ #define USB_CDC_COMM_FEATURE 0x01 #define USB_CDC_CAP_LINE 0x02 #define USB_CDC_CAP_BRK 0x04 #define USB_CDC_CAP_NOTIFY 0x08 /* "Union Functional Descriptor" from CDC spec 5.2.3.8 */ struct usb_cdc_union_desc { __u8 bLength; __u8 bDescriptorType; __u8 bDescriptorSubType; __u8 bMasterInterface0; __u8 bSlaveInterface0; /* ... and there could be other slave interfaces */ } __attribute__ ((packed)); /* "Country Selection Functional Descriptor" from CDC spec 5.2.3.9 */ struct usb_cdc_country_functional_desc { __u8 bLength; __u8 bDescriptorType; __u8 bDescriptorSubType; __u8 iCountryCodeRelDate; __le16 wCountyCode0; /* ... and there can be a lot of country codes */ } __attribute__ ((packed)); /* "Network Channel Terminal Functional Descriptor" from CDC spec 5.2.3.11 */ struct usb_cdc_network_terminal_desc { __u8 bLength; __u8 bDescriptorType; __u8 bDescriptorSubType; __u8 bEntityId; __u8 iName; __u8 bChannelIndex; __u8 bPhysicalInterface; } __attribute__ ((packed)); /* "Ethernet Networking Functional Descriptor" from CDC spec 5.2.3.16 */ struct usb_cdc_ether_desc { __u8 bLength; __u8 bDescriptorType; __u8 bDescriptorSubType; __u8 iMACAddress; __le32 bmEthernetStatistics; __le16 wMaxSegmentSize; __le16 wNumberMCFilters; __u8 bNumberPowerFilters; } __attribute__ ((packed)); /* "Telephone Control Model Functional Descriptor" from CDC WMC spec 6.3..3 */ struct usb_cdc_dmm_desc { __u8 bFunctionLength; __u8 bDescriptorType; __u8 bDescriptorSubtype; __u16 bcdVersion; __le16 wMaxCommand; } __attribute__ ((packed)); /* "MDLM Functional Descriptor" from CDC WMC spec 6.7.2.3 */ struct usb_cdc_mdlm_desc { __u8 bLength; __u8 bDescriptorType; __u8 bDescriptorSubType; __le16 bcdVersion; __u8 bGUID[16]; } __attribute__ ((packed)); /* "MDLM Detail Functional Descriptor" from CDC WMC spec 6.7.2.4 */ struct usb_cdc_mdlm_detail_desc { __u8 bLength; __u8 bDescriptorType; __u8 bDescriptorSubType; /* type is associated with mdlm_desc.bGUID */ __u8 bGuidDescriptorType; __u8 bDetailData[0]; } __attribute__ ((packed)); /* "OBEX Control Model Functional Descriptor" */ struct usb_cdc_obex_desc { __u8 bLength; __u8 bDescriptorType; __u8 bDescriptorSubType; __le16 bcdVersion; } __attribute__ ((packed)); /* "NCM Control Model Functional Descriptor" */ struct usb_cdc_ncm_desc { __u8 bLength; __u8 bDescriptorType; __u8 bDescriptorSubType; __le16 bcdNcmVersion; __u8 bmNetworkCapabilities; } __attribute__ ((packed)); /* "MBIM Control Model Functional Descriptor" */ struct usb_cdc_mbim_desc { __u8 bLength; __u8 bDescriptorType; __u8 bDescriptorSubType; __le16 bcdMBIMVersion; __le16 wMaxControlMessage; __u8 bNumberFilters; __u8 bMaxFilterSize; __le16 wMaxSegmentSize; __u8 bmNetworkCapabilities; } __attribute__ ((packed)); /* "MBIM Extended Functional Descriptor" from CDC MBIM spec 1.0 errata-1 */ struct usb_cdc_mbim_extended_desc { __u8 bLength; __u8 bDescriptorType; __u8 bDescriptorSubType; __le16 bcdMBIMExtendedVersion; __u8 bMaxOutstandingCommandMessages; __le16 wMTU; } __attribute__ ((packed)); /*-------------------------------------------------------------------------*/ /* * Class-Specific Control Requests (6.2) * * section 3.6.2.1 table 4 has the ACM profile, for modems. * section 3.8.2 table 10 has the ethernet profile. * * Microsoft's RNDIS stack for Ethernet is a vendor-specific CDC ACM variant, * heavily dependent on the encapsulated (proprietary) command mechanism. */ #define USB_CDC_SEND_ENCAPSULATED_COMMAND 0x00 #define USB_CDC_GET_ENCAPSULATED_RESPONSE 0x01 #define USB_CDC_REQ_SET_LINE_CODING 0x20 #define USB_CDC_REQ_GET_LINE_CODING 0x21 #define USB_CDC_REQ_SET_CONTROL_LINE_STATE 0x22 #define USB_CDC_REQ_SEND_BREAK 0x23 #define USB_CDC_SET_ETHERNET_MULTICAST_FILTERS 0x40 #define USB_CDC_SET_ETHERNET_PM_PATTERN_FILTER 0x41 #define USB_CDC_GET_ETHERNET_PM_PATTERN_FILTER 0x42 #define USB_CDC_SET_ETHERNET_PACKET_FILTER 0x43 #define USB_CDC_GET_ETHERNET_STATISTIC 0x44 #define USB_CDC_GET_NTB_PARAMETERS 0x80 #define USB_CDC_GET_NET_ADDRESS 0x81 #define USB_CDC_SET_NET_ADDRESS 0x82 #define USB_CDC_GET_NTB_FORMAT 0x83 #define USB_CDC_SET_NTB_FORMAT 0x84 #define USB_CDC_GET_NTB_INPUT_SIZE 0x85 #define USB_CDC_SET_NTB_INPUT_SIZE 0x86 #define USB_CDC_GET_MAX_DATAGRAM_SIZE 0x87 #define USB_CDC_SET_MAX_DATAGRAM_SIZE 0x88 #define USB_CDC_GET_CRC_MODE 0x89 #define USB_CDC_SET_CRC_MODE 0x8a /* Line Coding Structure from CDC spec 6.2.13 */ struct usb_cdc_line_coding { __le32 dwDTERate; __u8 bCharFormat; #define USB_CDC_1_STOP_BITS 0 #define USB_CDC_1_5_STOP_BITS 1 #define USB_CDC_2_STOP_BITS 2 __u8 bParityType; #define USB_CDC_NO_PARITY 0 #define USB_CDC_ODD_PARITY 1 #define USB_CDC_EVEN_PARITY 2 #define USB_CDC_MARK_PARITY 3 #define USB_CDC_SPACE_PARITY 4 __u8 bDataBits; } __attribute__ ((packed)); /* Control Signal Bitmap Values from 6.2.14 SetControlLineState */ #define USB_CDC_CTRL_DTR (1 << 0) #define USB_CDC_CTRL_RTS (1 << 1) /* table 62; bits in multicast filter */ #define USB_CDC_PACKET_TYPE_PROMISCUOUS (1 << 0) #define USB_CDC_PACKET_TYPE_ALL_MULTICAST (1 << 1) /* no filter */ #define USB_CDC_PACKET_TYPE_DIRECTED (1 << 2) #define USB_CDC_PACKET_TYPE_BROADCAST (1 << 3) #define USB_CDC_PACKET_TYPE_MULTICAST (1 << 4) /* filtered */ /*-------------------------------------------------------------------------*/ /* * Class-Specific Notifications (6.3) sent by interrupt transfers * * section 3.8.2 table 11 of the CDC spec lists Ethernet notifications * section 3.6.2.1 table 5 specifies ACM notifications, accepted by RNDIS * RNDIS also defines its own bit-incompatible notifications */ #define USB_CDC_NOTIFY_NETWORK_CONNECTION 0x00 #define USB_CDC_NOTIFY_RESPONSE_AVAILABLE 0x01 #define USB_CDC_NOTIFY_SERIAL_STATE 0x20 #define USB_CDC_NOTIFY_SPEED_CHANGE 0x2a struct usb_cdc_notification { __u8 bmRequestType; __u8 bNotificationType; __le16 wValue; __le16 wIndex; __le16 wLength; } __attribute__ ((packed)); /* UART State Bitmap Values from 6.3.5 SerialState */ #define USB_CDC_SERIAL_STATE_DCD (1 << 0) #define USB_CDC_SERIAL_STATE_DSR (1 << 1) #define USB_CDC_SERIAL_STATE_BREAK (1 << 2) #define USB_CDC_SERIAL_STATE_RING_SIGNAL (1 << 3) #define USB_CDC_SERIAL_STATE_FRAMING (1 << 4) #define USB_CDC_SERIAL_STATE_PARITY (1 << 5) #define USB_CDC_SERIAL_STATE_OVERRUN (1 << 6) struct usb_cdc_speed_change { __le32 DLBitRRate; /* contains the downlink bit rate (IN pipe) */ __le32 ULBitRate; /* contains the uplink bit rate (OUT pipe) */ } __attribute__ ((packed)); /*-------------------------------------------------------------------------*/ /* * Class Specific structures and constants * * CDC NCM NTB parameters structure, CDC NCM subclass 6.2.1 * */ struct usb_cdc_ncm_ntb_parameters { __le16 wLength; __le16 bmNtbFormatsSupported; __le32 dwNtbInMaxSize; __le16 wNdpInDivisor; __le16 wNdpInPayloadRemainder; __le16 wNdpInAlignment; __le16 wPadding1; __le32 dwNtbOutMaxSize; __le16 wNdpOutDivisor; __le16 wNdpOutPayloadRemainder; __le16 wNdpOutAlignment; __le16 wNtbOutMaxDatagrams; } __attribute__ ((packed)); /* * CDC NCM transfer headers, CDC NCM subclass 3.2 */ #define USB_CDC_NCM_NTH16_SIGN 0x484D434E /* NCMH */ #define USB_CDC_NCM_NTH32_SIGN 0x686D636E /* ncmh */ struct usb_cdc_ncm_nth16 { __le32 dwSignature; __le16 wHeaderLength; __le16 wSequence; __le16 wBlockLength; __le16 wNdpIndex; } __attribute__ ((packed)); struct usb_cdc_ncm_nth32 { __le32 dwSignature; __le16 wHeaderLength; __le16 wSequence; __le32 dwBlockLength; __le32 dwNdpIndex; } __attribute__ ((packed)); /* * CDC NCM datagram pointers, CDC NCM subclass 3.3 */ #define USB_CDC_NCM_NDP16_CRC_SIGN 0x314D434E /* NCM1 */ #define USB_CDC_NCM_NDP16_NOCRC_SIGN 0x304D434E /* NCM0 */ #define USB_CDC_NCM_NDP32_CRC_SIGN 0x316D636E /* ncm1 */ #define USB_CDC_NCM_NDP32_NOCRC_SIGN 0x306D636E /* ncm0 */ #define USB_CDC_MBIM_NDP16_IPS_SIGN 0x00535049 /* IPS<sessionID> : IPS0 for now */ #define USB_CDC_MBIM_NDP32_IPS_SIGN 0x00737069 /* ips<sessionID> : ips0 for now */ #define USB_CDC_MBIM_NDP16_DSS_SIGN 0x00535344 /* DSS<sessionID> */ #define USB_CDC_MBIM_NDP32_DSS_SIGN 0x00737364 /* dss<sessionID> */ /* 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 wNextNdpIndex; struct usb_cdc_ncm_dpe16 dpe16[0]; } __attribute__ ((packed)); /* 32-bit NCM Datagram Pointer Entry */ struct usb_cdc_ncm_dpe32 { __le32 dwDatagramIndex; __le32 dwDatagramLength; } __attribute__((__packed__)); /* 32-bit NCM Datagram Pointer Table */ struct usb_cdc_ncm_ndp32 { __le32 dwSignature; __le16 wLength; __le16 wReserved6; __le32 dwNextNdpIndex; __le32 dwReserved12; 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) #define USB_CDC_NCM_NCAP_NTB_INPUT_SIZE (1 << 5) /* 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 /* NTB Input Size Structure */ struct usb_cdc_ncm_ndp_input_size { __le32 dwNtbInMaxSize; __le16 wNtbInMaxDatagrams; __le16 wReserved; } __attribute__ ((packed)); /* CDC NCM subclass 6.2.11 SetCrcMode */ #define USB_CDC_NCM_CRC_NOT_APPENDED 0x00 #define USB_CDC_NCM_CRC_APPENDED 0x01 #endif /* __UAPI_LINUX_USB_CDC_H */
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