RNDIS Impossibile avviare "Dispositivo composito"

Question

Sto sviluppando un dispositivo composito RNDIS che include un dispositivo RNDIS, un dispositivo usbnet, un dispositivo modem e un dispositivo CDC auto-definito.

Il PC esegue Win7 a 32 bit e sto utilizzando il driver RNDIS predefinito. Quando rispondo all'enumerazione di Windows con il solo dispositivo RNDIS, tutto funziona correttamente. Ma quando compongo tutti i 4 dispositivi nel descrittore come dispositivo composito, Windows enumera ancora correttamente e gli altri 3 dispositivi funzionano correttamente, ma il dispositivo RNDIS incontra il problema "Impossibile avviare il codice di errore 10".

Ho tracciato il flusso di dati USB con un analizzatore USB, trovato che il driver RNDIS di Windows non ha inviato i messaggi di inizializzazione RNDIS dopo "Imposta configurazione".

Il descrittore dispositivo composito è come ha scritto:

  devDesc[0] = 0x12; // bLength    - Descriptor length 
     devDesc[1] = 0x01; // bDescriptorType  - Descriptor Type 
     devDesc[2] = bcdUSB_LSB; // bcdUSB (LSB)  - Device Compliant to USB specification .. 
     devDesc[3] = bcdUSB_MSB; // bcdUSB (MSB) 
     devDesc[4] = 0x00; // bDeviceClass  - class of the device 
     devDesc[5] = 0x00; // bDeviceSubClass  - subclass of the device 
     devDesc[6] = 0x00; // bDeviceProtocol  - protocol of the device 
     devDesc[7] = bEp0MaxPacketSize; // bMaxPacketSize0  - Max Packet Size for EP zero 
     devDesc[8] = 0x86; // idVendor (LSB)  - Vendor ID 
     devDesc[9] = 0x12; // idVendor (MSB) 
     devDesc[10] = 0x0E; // idProduct (LSB)  - Product ID 
     devDesc[11] = 0x81; // idProduct (MSB) 
     devDesc[12] = 0x02; // bcdDevice (LSB)  - The device release number 
     devDesc[13] = 0x00; // bcdDevice (MSB) 
     devDesc[14] = 0x01; // iManufacturer  - Index of string descriptor describing Manufacturer 
     devDesc[15] = 0x03; // iProduct   - Index of string descriptor describing Product 
     devDesc[16] = 0x04; // iSerialNumber  - Index of string descriptor describing Serial number 
     devDesc[17] = 0x01; // bNumConfigurations - Number of configurations 

     //Configuration Descriptor 
     configDesc[0] = 0x09; // bLength    - Descriptor length 
     configDesc[1] = 0x02; // bDescriptorType  - Descriptor Type 
     configDesc[2] = 177; // wTotalLength (LSB) - Total Data length for the configuration, 
     configDesc[3] = 0x00; // wTotalLength (MSB) - includes all descriptors for this configuration 
     configDesc[4] = 0x05; // bNumInterfaces  - Number of interfaces this configuration supports 
     configDesc[5] = 0x01; // bConfigurationValue - The Value that should be used to select this configuration 
     configDesc[6] = 0x00; // iConfiguration  - Index of string descriptor describing this configuration 
     configDesc[7] = 0xC0; // bmAttributes   - bit6: Self-Powered, bit5: RemoteWakeup 
     configDesc[8] = 0xfa; // MaxPower    - Maximum power consumption for this configuration (mA) 


     //Interface Descriptor 0 usbnet 
     configDesc[9] = 0x09; // bLength    - Descriptor length 
     configDesc[10] = 0x04; // bDescriptorType  - Descriptor Type 
     configDesc[11] = 0x00; // bInterfaceNumber  - Index (Number) of this interfaces 
     configDesc[12] = 0x00; // bAlternateSetting  - The value to select alternate setting of this interface 
     configDesc[13] = 0x03; // bNumEndpoints   - Number endpoints used by this interface 
     configDesc[14] = 0xff; // bInterfaceClass  - Class of this Interface 
     configDesc[15] = 0xff; // bInterfaceSubClass - Sub class of this Interface 
     configDesc[16] = 0x00; // bInterfaceProtocol - Protocol of this Interface 
     configDesc[17] = 0x05; // iInterface   - Index of string descriptor describing this Interface 


     // usbnet Endpoint Descriptor 
     configDesc[18] = 0x07; // bLength    - Descriptor length 
     configDesc[19] = 0x05; // bDescriptorType  - Descriptor Type 
     configDesc[20] = 0x85; // bEndpointAddress  - Endpoint Address & Direction 
     configDesc[21] = 0x03; // bmAttributes   - BULK,ISO,Interrupt 
     configDesc[22] = 0x0F; // wMaxPacketSize (LSB) - Max packet size 
     configDesc[23] = 0x00; // wMaxPacketSize (MSB) 
     configDesc[24] = bInterval; // bInterval    - Polling Interval (ms) 

     configDesc[25] = 0x07; // bLength    - Descriptor length 
     configDesc[26] = 0x05; // bDescriptorType  - Descriptor Type 
     configDesc[27] = 0x81; // bEndpointAddress  - Endpoint Address & Direction 
     configDesc[28] = 0x02; // bmAttributes   - BULK,ISO,Interrupt 
     configDesc[29] = bBulkMaxPacketSize_LSB; // wMaxPacketSize (LSB) - Max packet size 
     configDesc[30] = bBulkMaxPacketSize_MSB; // wMaxPacketSize (MSB) 
     configDesc[31] = 0x00; // bInterval    - Polling Interval (ms) 

     configDesc[32] = 0x07; // bLength    - Descriptor length 
     configDesc[33] = 0x05; // bDescriptorType  - Descriptor Type 
     configDesc[34] = 0x02; // bEndpointAddress  - Endpoint Address & Direction 
     configDesc[35] = 0x02; // bmAttributes   - BULK,ISO,Interrupt 
     configDesc[36] = bBulkMaxPacketSize_LSB; // wMaxPacketSize (LSB) - Max packet size 
     configDesc[37] = bBulkMaxPacketSize_MSB; // wMaxPacketSize (MSB) 
     configDesc[38] = 0x00; // bInterval    - Polling Interval (ms) 

     //Interface descriptor 1 ICAT 
     configDesc[39] = 0x09; // bLength    - Descriptor length 
     configDesc[40] = 0x04; // bDescriptorType  - Descriptor Type 
     configDesc[41] = 0x01; // bInterfaceNumber  - Index (Number) of this interfaces 
     configDesc[42] = 0x00; // bAlternateSetting  - The value to select alternate setting of this interface 
     configDesc[43] = 0x02; // bNumEndpoints   - Number endpoints used by this interface 
     configDesc[44] = 0xFF; // bInterfaceClass  - Class of this Interface 
     configDesc[45] = 0x00; // bInterfaceSubClass - Sub class of this Interface 
     configDesc[46] = 0x00; // bInterfaceProtocol - Protocol of this Interface 
     configDesc[47] = 0x00; // iInterface   - Index of string descriptor describing this Interface 

     //ICAT endpoints 
     configDesc[48] = 0x07; // bLength    - Descriptor length 
     configDesc[49] = 0x05; // bDescriptorType  - Descriptor Type 
     configDesc[50] = 0x87; // bEndpointAddress  - Endpoint Address & Direction 
     configDesc[51] = 0x02; // bmAttributes   - BULK,ISO,Interrupt 
     configDesc[52] = bBulkMaxPacketSize_LSB; // wMaxPacketSize (LSB) - Max packet size 
     configDesc[53] = bBulkMaxPacketSize_MSB; // wMaxPacketSize (MSB) 
     configDesc[54] = 0x00; // bInterval    - Polling Interval (ms) 

     configDesc[55] = 0x07; // bLength    - Descriptor length 
     configDesc[56] = 0x05; // bDescriptorType  - Descriptor Type 
     configDesc[57] = 0x08; // bEndpointAddress  - Endpoint Address & Direction 
     configDesc[58] = 0x02; // bmAttributes   - BULK,ISO,Interrupt 
     configDesc[59] = bBulkMaxPacketSize_LSB; // wMaxPacketSize (LSB) - Max packet size 
     configDesc[60] = bBulkMaxPacketSize_MSB; // wMaxPacketSize (MSB) 
     configDesc[61] = 0x00; // bInterval    - Polling Interval (ms) 

     //Modem class specific descriptors 
     configDesc[62] = 0x09; // bLength    - Descriptor length 
     configDesc[63] = 0x04; // bDescriptorType  - Descriptor Type 
     configDesc[64] = 0x02; // bInterfaceNumber  - Index (Number) of this interfaces 
     configDesc[65] = 0x00; // bAlternateSetting  - The value to select alternate setting of this interface 
     configDesc[66] = 0x03; // bNumEndpoints   - Number endpoints used by this interface 
     configDesc[67] = 0x02; // bInterfaceClass  - Class of this Interface 
     configDesc[68] = 0x02; // bInterfaceSubClass - Sub class of this Interface 
     configDesc[69] = 0x01; // bInterfaceProtocol - Protocol of this Interface 
     configDesc[70] = 0x00; // iInterface   - Index of string descriptor describing this Interface 

     configDesc[71] = 0x05; // descriptor length Comms Class CS_INTERFACE 'Functional Descriptors' Triplet 
     configDesc[72] = 0x24; // descriptor type 
     configDesc[73] = 0x00; // subtype = header 
     configDesc[74] = 0x10; // BCD 
     configDesc[75] = 0x01; // 

     configDesc[76] = 0x05; // 2. descriptor length - Call Manangement Func Desc 
     configDesc[77] = 0x24; // descriptor type 
     configDesc[78] = 0x01; // subtype = Call management 
     configDesc[79] = 0x00; //bmcapabilities; MS driver usbser.sys seems to ignore this bit and sends AT over the data,interface anyway 
     configDesc[80] = 0x01; // Interface number of data class interface 

     configDesc[81] = 0x04; // 3.descriptor length Abstract Control Func Desc 
     configDesc[82] = 0x24; // descriptor type 
     configDesc[83] = 0x02; // subtype = Abstract CM 
     configDesc[84] = 0x00; // bmcapabilities 

     configDesc[85] = 0x05; // Size of descriptor. Number of interfaces plus 3 bytes of header 
     configDesc[86] = 0x24; // 0x24 - CS_INTERFACE 
     configDesc[87] = 0x06; // 0x06 - See table 25 of document "USB Class definitions for Comms Devices" 
     configDesc[88] = 0x00; 
     configDesc[89] = 0x01; 

     //Endpoint Descriptors MODEM 
     configDesc[90] = 0x07; // bLength    - Descriptor length 
     configDesc[91] = 0x05; // bDescriptorType  - Descriptor Type 
     configDesc[92] = 0x86; // bEndpointAddress  - Endpoint Address & Direction 
     configDesc[93] = 0x03; // bmAttributes   - BULK,ISO,Interrupt 
     configDesc[94] = 0x0F; // wMaxPacketSize (LSB) - Max packet size 
     configDesc[95] = 0x00; // wMaxPacketSize (MSB) 
     configDesc[96] = bInterval; // bInterval    - Polling Interval (ms) 

     configDesc[97] = 0x07; // bLength    - Descriptor length 
     configDesc[98] = 0x05; // bDescriptorType  - Descriptor Type 
     configDesc[99] = 0x83; // bEndpointAddress  - Endpoint Address & Direction 
     configDesc[100] = 0x02; // bmAttributes   - BULK,ISO,Interrupt 
     configDesc[101] = bBulkMaxPacketSize_LSB; // wMaxPacketSize (LSB) - Max packet size 
     configDesc[102] = bBulkMaxPacketSize_MSB; // wMaxPacketSize (MSB) 
     configDesc[103] = 0x00; // bInterval    - Polling Interval (ms) 

     configDesc[104] = 0x07; // bLength    - Descriptor length 
     configDesc[105] = 0x05; // bDescriptorType  - Descriptor Type 
     configDesc[106] = 0x04; // bEndpointAddress  - Endpoint Address & Direction 
     configDesc[107] = 0x02; // bmAttributes   - BULK,ISO,Interrupt 
     configDesc[108] = bBulkMaxPacketSize_LSB; // wMaxPacketSize (LSB) - Max packet size 
     configDesc[109] = bBulkMaxPacketSize_MSB; // wMaxPacketSize (MSB) 
     configDesc[110] = 0x00; // bInterval    - Polling Interval (ms) 


     //rndis IAD 
     configDesc[111] = 0x08; // bLength 
     configDesc[112] = 0x0b; // INTERFACE ASSOCIATION DESCRIPTOR bDescriptorType 
     configDesc[113] = 0x03; // bFirstInterface 
     configDesc[114] = 0x02; // bInterfaceCount 
     configDesc[115] = 0x02; // bFunctionClass 
     configDesc[116] = 0x02; // bFunctionSubClass 
     configDesc[117] = 0xFF; // bFunctionProtocol 
     configDesc[118] = 0x03; // Index of string descriptor describing this function 

     //rndis comm interface 
     configDesc[119] = 0x09; // bLength    - Descriptor length 
     configDesc[120] = 0x04; // bDescriptorType  - Descriptor Type 
     configDesc[121] = 0x03; //bInterfaceNumber  - for RNDIS 
     configDesc[122] = 0x00; // bAlt 
     configDesc[123] = 0x01; // bNumEnd 
     configDesc[124] = 0x02; //bInterfaceClass 
     configDesc[125] = 0x02; // bInterfaceSubclass 
     configDesc[126] = 0xFF; // bInterfaceprotocol 
     configDesc[127] = 0x00; // iInterface +++++++++++++++++++++++++++++++++++++need modified 


     // Class specified descriptor 

     configDesc[128] = 0x05; // 
     configDesc[129] = 0x24; // bDescriptorType 
     configDesc[130] = 0x00; //bDescriptorSubtype 
     configDesc[131] = 0x10; // BCD 
     configDesc[132] = 0x01; // 

     configDesc[133] = 0x05; // 
     configDesc[134] = 0x24; // bDescriptorType 
     configDesc[135] = 0x01; // bDescriptorSubtype 
     configDesc[136] = 0x00; // bmCapabilities 
     configDesc[137] = 0x04; //bDataInterface 

     configDesc[138] = 0x04; // 
     configDesc[139] = 0x24; // bDescriptorType 
     configDesc[140] = 0x02; // bDescriptorSubtype 
     configDesc[141] = 0x00; // bmCapabilities 

     configDesc[142] = 0x05; // 
     configDesc[143] = 0x24; // bDescriptorType 
     configDesc[144] = 0x06; // bDescriptorSubtype 
     configDesc[145] = 0x03; // bControlInterface 
     configDesc[146] = 0x04; // bsubordinateInterface 

     //Interrupt In endpoint 
     configDesc[147] = 0x07; // 
     configDesc[148] = 0x05; // 
     configDesc[149] = 0x8C; //bendpointAddress 
     configDesc[150] = 0x03; //bmAttributes 
     configDesc[151] = 0x08; // wMaxPacketSize 
     configDesc[152] = 0x00; // 
     configDesc[153] = 0x01; // bInterval 

     //rndis data interface 
     configDesc[154] = 0x09; // bLength    - Descriptor length 
     configDesc[155] = 0x04; // bDescriptorType  - Descriptor Type 
     configDesc[156] = 0x04; //bInterfaceNumber  --- for RNDIS 
     configDesc[157] = 0x00; // bAlt 
     configDesc[158] = 0x02; // NumEndpoints 
     configDesc[159] = 0x0a; //bInterfaceClass 
     configDesc[160] = 0x00; // bInterfaceSubclass 
     configDesc[161] = 0x00; // bInterfaceprotocol 
     configDesc[162] = 0x00; // iInterface +++++++++++++++++++++++++++++++++++++need modified 

     //Bulk In endpoint 
     configDesc[163] = 0x07; // 
     configDesc[164] = 0x05; // 
     configDesc[165] = 0x8E; //bendpointAddress 
     configDesc[166] = 0x02; //bmAttributes 
     configDesc[167] = 0x00; // wMaxPacketSize 
     configDesc[168] = 0x02; // 
     configDesc[169] = 0x00; // bInterval 

     //Bulk Out endpoint 
     configDesc[170] = 0x07; // 
     configDesc[171] = 0x05; // 
     configDesc[172] = 0x0D; //bendpointAddress 
     configDesc[173] = 0x02; //bmAttributes 
     configDesc[174] = 0x00; // wMaxPacketSize 
     configDesc[175] = 0x02; // 
     configDesc[176] = 0x00; // bInterva 

Answer 1

Permettetemi di rispondere alla mia domanda, io ho capito questo problema:

L'interfaccia RNDIS IAD deve essere il primo e il secondo di il dispositivo composito. Sebbene il problema sia risolto, mi imbarazza ancora.

Spero che questa nota aiuti gli altri ad affrontare problemi simili.