On some extreme circumstances, the client can't send the whole message out
in a short time. In this case, the server can't receive the whole message
because now server didn't check the integrity of the message.
This patch add this by checking the terminal character of the message.
Tracked-On: #7215
Signed-off-by: Fei Li <fei1.li@intel.com>
1. enlarge receive Service VM message time to 10s. Now in some extreme
environments, Service VM will takes more than 1s to ACK the User VM's
requirements.
2. fix a bug to calculate string pointer size.
Tracked-On: #7215
Signed-off-by: Fei Li <fei1.li@intel.com>
In the uart module, the following functions are implemented:
- init_uart_dev
Allocate UART device instance and initialize UART device
according to device name.
- deinit_uart_dev
Close UART devcie and free UART device instance.
- send_message_by_uart
Set handler to handle received message.
- receive_message_by_uart
Receive message and retry RETRY_RECV_TIMES time to
avoid miss message in some cases.
- get_uart_dev_fd
Get the file descriptor of a UART device
- get_uart_dev_path
Get the name of a UART device
v1-->v2:
Update sync logic between uart in service VM and uart in
user VM, lifecycle manager will not depend on VM boot order.
Add code comments.
v2-->v3:
This module only includes UART device operations, move other
logic into uart channel module.
v3-->v4:
Add parameters check for interface and refine some names.
v4-->v5:
Refine interface parameter type, error value.
v5-->v6:
Update condition check format of deinit_uart_dev.
Tracked-On: #6652
Signed-off-by: Xiangyang Wu <xiangyang.wu@intel.com>
Reviewed-by: fei1.li@intel.com
