Xiangyang Wu ed3a110f5f misc: life_mngr: add command handler module ...

In this module, the following functions are implemented:
For uart channel of service VM, implement handlers for sync command,
system shutdown request command, acked  poweroff command, vm poweroff
timeout command.
The uart channel commands of service VM and related actions are
described below:
Command			Actions
---------------------------------------------------------------
sync			Send acked sync
			command to uart in user VM
----------------------------------------------------------------
system shutdown		If this request is valid, send
request			poweroff command to each
			connected user VM through uart,
			Enable message reseding.
----------------------------------------------------------------
acked poweroff		Remove uart of user VM from
command			connection list, stop message polling,
			if connection list is empty, will
			wait for user VM status through check
			ACRN DM process instance, if all user
			VMs are	shutdown, then shutdown
			service VM
---------------------------------------------------------
ACK timeout		If it is timeout of receiving poweroff ACK,
			the action is similar to acked poweroff.
			Ohterwise, just disable message reseding.
---------------------------------------------------------

For uart channel of user VM, implement handlers for acked sync
command, poweroff command, acked system shutdown request command,
ACK timeout command.
The uart channel commands of user VM and related actions are
described below:
Command			Actions
--------------------------------------------------------
acked sync		Print log message
--------------------------------------------------------
poweroff		Disconnect uart channel,
			exit message polling, close
			unix domain socket, shutdown user VM
--------------------------------------------------------
user VM shutdown	Exit message polling, close
			unix domain socket, shutdown user VM
--------------------------------------------------------
acked system		Print log message
shutdown request
-------------------------------------------------------
ACK timeout		Disconnect uart channel,
			exit message polling, close
			unix domain socket
---------------------------------------------------------

For socket server in each VM, implement handler for system
shutdown request.
In user VM, forward this command to service VM through uart.
In service VM, send poweroff command to each connected user VM
through uart.

Implement handler for user VM shutdown request in socket server of
service VM, send user VM shutdown command to user VM which is
specified in the user VM shutdown request message.

v1-->v2:
	Add comments in c file and head file.
v2-->v3:
	Update commit message about allow s5 command and update
	some log message.
v3-->v4:
	Guest shutdown support.
v4-->v5:
	Update command name.
v5-->v6:
	Move uart channel operations into uart channel module.
v6-->v7:
	Set resend requirement for some commands.
	Add ACK receiving timeout handler for user VM.
v7-->v8:
	Update message reseding enable, this interface will be
	called before sending message.
v8-->v9:
	Use strlen to calculate the length of string, this will be
	the parameter of send_message_by_uart.

Tracked-On: #6652

Signed-off-by: Xiangyang Wu <xiangyang.wu@intel.com>
Reviewed-by: fei1.li@intel.com

2021-11-10 18:46:15 +08:00

3.6 KiB

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