//-----------------------------------------------------------------
// usb_cdc_process_request:
//-----------------------------------------------------------------
void usb_cdc_process_request(unsigned char req, unsigned short wValue, unsigned short WIndex, unsigned char *data, unsigned short wLength)
{
switch ( req )
{
case CDC_SEND_ENCAPSULATED_COMMAND:
log_printf(USBLOG_CDC_INFO, "CDC: Send encap\n");
cdc_send_encapsulated_command();
break;
case CDC_GET_ENCAPSULATED_RESPONSE:
log_printf(USBLOG_CDC_INFO, "CDC: Get encap\n");
cdc_get_encapsulated_response(wLength);
break;
case CDC_SET_LINE_CODING:
log_printf(USBLOG_CDC_INFO, "CDC: Set line coding\n");
cdc_set_line_coding(data);
break;
case CDC_GET_LINE_CODING:
log_printf(USBLOG_CDC_INFO, "CDC: Get line coding\n");
cdc_get_line_coding(wLength);
break;
case CDC_SET_CONTROL_LINE_STATE:
log_printf(USBLOG_CDC_INFO, "CDC: Set line state\n");
cdc_set_control_line_state();
break;
case CDC_SEND_BREAK:
log_printf(USBLOG_CDC_INFO, "CDC: Send break\n");
cdc_send_break();
break;
default:
log_printf(USBLOG_CDC_INFO, "CDC: Unknown command\n");
usbhw_control_endpoint_stall();
break;
}
}
/**
* Receive control packet
*
* @v acm USB RNDIS device
* @ret rc Return status code
*/
static int acm_control_receive ( struct acm_device *acm ) {
struct rndis_device *rndis = acm->rndis;
struct usb_device *usb = acm->usb;
struct io_buffer *iobuf;
struct rndis_header *header;
size_t mtu = ACM_RESPONSE_MTU;
size_t len;
int rc;
/* Allocate I/O buffer */
iobuf = alloc_iob ( mtu );
if ( ! iobuf ) {
rc = -ENOMEM;
goto err_alloc;
}
/* Get encapsulated response */
if ( ( rc = cdc_get_encapsulated_response ( usb, acm->usbnet.comms,
iobuf->data, mtu ) ) != 0 ){
DBGC ( acm, "ACM %p could not get encapsulated response: %s\n",
acm, strerror ( rc ) );
goto err_get_response;
}
/* Fix up buffer length */
header = iobuf->data;
len = le32_to_cpu ( header->len );
if ( len > mtu ) {
DBGC ( acm, "ACM %p overlength encapsulated response\n", acm );
DBGC_HDA ( acm, 0, iobuf->data, mtu );
rc = -EPROTO;
goto err_len;
}
iob_put ( iobuf, len );
/* Hand off to RNDIS */
rndis_rx ( rndis, iob_disown ( iobuf ) );
return 0;
err_len:
err_get_response:
free_iob ( iobuf );
err_alloc:
return rc;
}
