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tinyusb/src/class/cdc/cdc_rndis_host.c

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/*
* The MIT License (MIT)
*
* Copyright (c) 2019 Ha Thach (tinyusb.org)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* This file is part of the TinyUSB stack.
*/
#include "tusb_option.h"
#if (TUSB_OPT_HOST_ENABLED && CFG_TUH_CDC && CFG_TUH_CDC_RNDIS)
//--------------------------------------------------------------------+
// INCLUDE
//--------------------------------------------------------------------+
#include "common/tusb_common.h"
#include "cdc_host.h"
#include "cdc_rndis_host.h"
//--------------------------------------------------------------------+
// MACRO CONSTANT TYPEDEF
//--------------------------------------------------------------------+
#define RNDIS_MSG_PAYLOAD_MAX (1024*4)
CFG_TUSB_MEM_SECTION static uint8_t msg_notification[CFG_TUSB_HOST_DEVICE_MAX][8];
CFG_TUSB_MEM_SECTION TU_ATTR_ALIGNED(4) static uint8_t msg_payload[RNDIS_MSG_PAYLOAD_MAX];
static rndish_data_t rndish_data[CFG_TUSB_HOST_DEVICE_MAX];
// TODO Microsoft requires message length for any get command must be at least 4096 bytes
//--------------------------------------------------------------------+
// INTERNAL OBJECT & FUNCTION DECLARATION
//--------------------------------------------------------------------+
static tusb_error_t rndis_body_subtask(void);
static tusb_error_t send_message_get_response_subtask( uint8_t dev_addr, cdch_data_t *p_cdc,
uint8_t * p_mess, uint32_t mess_length,
uint8_t *p_response );
//--------------------------------------------------------------------+
// APPLICATION API
//--------------------------------------------------------------------+
tusb_error_t tusbh_cdc_rndis_get_mac_addr(uint8_t dev_addr, uint8_t mac_address[6])
{
TU_ASSERT( tusbh_cdc_rndis_is_mounted(dev_addr), TUSB_ERROR_CDCH_DEVICE_NOT_MOUNTED);
TU_VERIFY( mac_address, TUSB_ERROR_INVALID_PARA);
memcpy(mac_address, rndish_data[dev_addr-1].mac_address, 6);
return TUSB_ERROR_NONE;
}
//--------------------------------------------------------------------+
// IMPLEMENTATION
//--------------------------------------------------------------------+
// To enable the TASK_ASSERT style (quick return on false condition) in a real RTOS, a task must act as a wrapper
// and is used mainly to call subtasks. Within a subtask return statement can be called freely, the task with
// forever loop cannot have any return at all.
OSAL_TASK_FUNCTION(cdch_rndis_task) (void* param;)
{
OSAL_TASK_BEGIN
rndis_body_subtask();
OSAL_TASK_END
}
static tusb_error_t rndis_body_subtask(void)
{
static uint8_t relative_addr;
OSAL_SUBTASK_BEGIN
for (relative_addr = 0; relative_addr < CFG_TUSB_HOST_DEVICE_MAX; relative_addr++)
{
}
osal_task_delay(100);
OSAL_SUBTASK_END
}
//--------------------------------------------------------------------+
// RNDIS-CDC Driver API
//--------------------------------------------------------------------+
void rndish_init(void)
{
tu_memclr(rndish_data, sizeof(rndish_data_t)*CFG_TUSB_HOST_DEVICE_MAX);
//------------- Task creation -------------//
//------------- semaphore creation for notificaiton pipe -------------//
for(uint8_t i=0; i<CFG_TUSB_HOST_DEVICE_MAX; i++)
{
rndish_data[i].sem_notification_hdl = osal_semaphore_create( OSAL_SEM_REF(rndish_data[i].semaphore_notification) );
}
}
void rndish_close(uint8_t dev_addr)
{
osal_semaphore_reset( rndish_data[dev_addr-1].sem_notification_hdl );
// tu_memclr(&rndish_data[dev_addr-1], sizeof(rndish_data_t)); TODO need to move semaphore & its handle out before memclr
}
static rndis_msg_initialize_t const msg_init =
{
.type = RNDIS_MSG_INITIALIZE,
.length = sizeof(rndis_msg_initialize_t),
.request_id = 1, // TODO should use some magic number
.major_version = 1,
.minor_version = 0,
.max_xfer_size = 0x4000 // TODO mimic windows
};
static rndis_msg_query_t const msg_query_permanent_addr =
{
.type = RNDIS_MSG_QUERY,
.length = sizeof(rndis_msg_query_t)+6,
.request_id = 1,
.oid = RNDIS_OID_802_3_PERMANENT_ADDRESS,
.buffer_length = 6,
.buffer_offset = 20,
};
static rndis_msg_set_t const msg_set_packet_filter =
{
.type = RNDIS_MSG_SET,
.length = sizeof(rndis_msg_set_t)+4,
.request_id = 1,
.oid = RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
.buffer_length = 4,
.buffer_offset = 20,
};
tusb_error_t rndish_open_subtask(uint8_t dev_addr, cdch_data_t *p_cdc)
{
tusb_error_t error;
OSAL_SUBTASK_BEGIN
//------------- Message Initialize -------------//
memcpy(msg_payload, &msg_init, sizeof(rndis_msg_initialize_t));
STASK_INVOKE(
send_message_get_response_subtask( dev_addr, p_cdc,
msg_payload, sizeof(rndis_msg_initialize_t),
msg_payload),
error
);
if ( TUSB_ERROR_NONE != error ) STASK_RETURN(error);
// TODO currently not support multiple data packets per xfer
rndis_msg_initialize_cmplt_t * const p_init_cmpt = (rndis_msg_initialize_cmplt_t *) msg_payload;
STASK_ASSERT(p_init_cmpt->type == RNDIS_MSG_INITIALIZE_CMPLT && p_init_cmpt->status == RNDIS_STATUS_SUCCESS &&
p_init_cmpt->max_packet_per_xfer == 1 && p_init_cmpt->max_xfer_size <= RNDIS_MSG_PAYLOAD_MAX);
rndish_data[dev_addr-1].max_xfer_size = p_init_cmpt->max_xfer_size;
//------------- Message Query 802.3 Permanent Address -------------//
memcpy(msg_payload, &msg_query_permanent_addr, sizeof(rndis_msg_query_t));
tu_memclr(msg_payload + sizeof(rndis_msg_query_t), 6); // 6 bytes for MAC address
STASK_INVOKE(
send_message_get_response_subtask( dev_addr, p_cdc,
msg_payload, sizeof(rndis_msg_query_t) + 6,
msg_payload),
error
);
if ( TUSB_ERROR_NONE != error ) STASK_RETURN(error);
rndis_msg_query_cmplt_t * const p_query_cmpt = (rndis_msg_query_cmplt_t *) msg_payload;
STASK_ASSERT(p_query_cmpt->type == RNDIS_MSG_QUERY_CMPLT && p_query_cmpt->status == RNDIS_STATUS_SUCCESS);
memcpy(rndish_data[dev_addr-1].mac_address, msg_payload + 8 + p_query_cmpt->buffer_offset, 6);
//------------- Set OID_GEN_CURRENT_PACKET_FILTER to (DIRECTED | MULTICAST | BROADCAST) -------------//
memcpy(msg_payload, &msg_set_packet_filter, sizeof(rndis_msg_set_t));
tu_memclr(msg_payload + sizeof(rndis_msg_set_t), 4); // 4 bytes for filter flags
((rndis_msg_set_t*) msg_payload)->oid_buffer[0] = (RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_MULTICAST | RNDIS_PACKET_TYPE_BROADCAST);
STASK_INVOKE(
send_message_get_response_subtask( dev_addr, p_cdc,
msg_payload, sizeof(rndis_msg_set_t) + 4,
msg_payload),
error
);
if ( TUSB_ERROR_NONE != error ) STASK_RETURN(error);
rndis_msg_set_cmplt_t * const p_set_cmpt = (rndis_msg_set_cmplt_t *) msg_payload;
STASK_ASSERT(p_set_cmpt->type == RNDIS_MSG_SET_CMPLT && p_set_cmpt->status == RNDIS_STATUS_SUCCESS);
tusbh_cdc_rndis_mounted_cb(dev_addr);
OSAL_SUBTASK_END
}
void rndish_xfer_isr(cdch_data_t *p_cdc, pipe_handle_t pipe_hdl, xfer_result_t event, uint32_t xferred_bytes)
{
if ( pipehandle_is_equal(pipe_hdl, p_cdc->pipe_notification) )
{
osal_semaphore_post( rndish_data[pipe_hdl.dev_addr-1].sem_notification_hdl );
}
}
//--------------------------------------------------------------------+
// INTERNAL & HELPER
//--------------------------------------------------------------------+
static tusb_error_t send_message_get_response_subtask( uint8_t dev_addr, cdch_data_t *p_cdc,
uint8_t * p_mess, uint32_t mess_length,
uint8_t *p_response)
{
tusb_error_t error;
OSAL_SUBTASK_BEGIN
//------------- Send RNDIS Control Message -------------//
STASK_INVOKE(
usbh_control_xfer_subtask( dev_addr, bm_request_type(TUSB_DIR_OUT, TUSB_REQ_TYPE_CLASS, TUSB_REQ_RCPT_INTERFACE),
CDC_REQUEST_SEND_ENCAPSULATED_COMMAND, 0, p_cdc->interface_number,
mess_length, p_mess),
error
);
if ( TUSB_ERROR_NONE != error ) STASK_RETURN(error);
//------------- waiting for Response Available notification -------------//
(void) hcd_pipe_xfer(p_cdc->pipe_notification, msg_notification[dev_addr-1], 8, true);
osal_semaphore_wait(rndish_data[dev_addr-1].sem_notification_hdl, OSAL_TIMEOUT_NORMAL, &error);
if ( TUSB_ERROR_NONE != error ) STASK_RETURN(error);
STASK_ASSERT(msg_notification[dev_addr-1][0] == 1);
//------------- Get RNDIS Message Initialize Complete -------------//
STASK_INVOKE(
usbh_control_xfer_subtask( dev_addr, bm_request_type(TUSB_DIR_IN, TUSB_REQ_TYPE_CLASS, TUSB_REQ_RCPT_INTERFACE),
CDC_REQUEST_GET_ENCAPSULATED_RESPONSE, 0, p_cdc->interface_number,
RNDIS_MSG_PAYLOAD_MAX, p_response),
error
);
if ( TUSB_ERROR_NONE != error ) STASK_RETURN(error);
OSAL_SUBTASK_END
}
//static tusb_error_t send_process_msg_initialize_subtask(uint8_t dev_addr, cdch_data_t *p_cdc)
//{
// tusb_error_t error;
//
// OSAL_SUBTASK_BEGIN
//
// *((rndis_msg_initialize_t*) msg_payload) = (rndis_msg_initialize_t)
// {
// .type = RNDIS_MSG_INITIALIZE,
// .length = sizeof(rndis_msg_initialize_t),
// .request_id = 1, // TODO should use some magic number
// .major_version = 1,
// .minor_version = 0,
// .max_xfer_size = 0x4000 // TODO mimic windows
// };
//
//
//
// OSAL_SUBTASK_END
//}
#endif
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