L4virtio::Svr::Virtio_rng< Rnd_state, Epiface > Class Template Reference

A server implementation of the virtio-rng protocol. More...

#include <virtio-rng-device>

Inheritance diagram for L4virtio::Svr::Virtio_rng< Rnd_state, Epiface >:

Collaboration diagram for L4virtio::Svr::Virtio_rng< Rnd_state, Epiface >:

Data Structures
class	Host_irq
	Handler for the host irq. More...
class	Request_processor
	Handler for the Virtio requests. More...

Public Member Functions
void	reset () override
	reset callback, called for doing a device reset
bool	check_queues () override
	callback for checking if the queues at DRIVER_OK transition
int	reconfig_queue (unsigned idx) override
	callback for client queue-config request
void	trigger_driver_config_irq () override
	callback for triggering configuration change notification IRQ
L4::Cap< L4::Irq >	device_notify_irq () const override
	callback to gather the device notification IRQ (old-style)
void	register_single_driver_irq () override
	callback for registering a single guest IRQ for all queues (old-style)
Public Member Functions inherited from L4virtio::Svr::Device_t< DATA >
virtual bool	check_features ()
	callback for checking the subset of accepted features
virtual void	cfg_changed (unsigned)
	callback for client device configuration changes
virtual void	register_driver_irq (unsigned idx)
	Callback for registering an notification IRQ (multi IRQ).
virtual L4::Cap< L4::Irq >	device_notify_irq (unsigned idx)
	Callback to gather the device notification IRQ (multi IRQ).
virtual unsigned	num_events_supported () const
	Return the highest notification index supported.
	Device_t (Dev_config *dev_config)
	Make a device for the given config.
Mem_list const *	mem_info () const
	Get the memory region list used for this device.
void	reset_queue_config (unsigned idx, unsigned num_max, bool inc_generation=false)
	Trigger reset for the configuration space for queue idx.
void	init_mem_info (unsigned num)
	Initialize the memory region list to the given maximum.
void	device_error ()
	Transition device into DEVICE_NEEDS_RESET state.
bool	setup_queue (Virtqueue *q, unsigned qn, unsigned num_max)
	Enable/disable the specified queue.
bool	handle_mem_cmd_write ()
	Check for a value in the cmd register and handle a write.
void	enable_trusted_ds_validation ()
	Enable trusted dataspace validation.
void	add_trusted_dataspaces (std::shared_ptr< Ds_vector const > ds)
	Provide a list of trusted dataspaces that can be used for validation.
Public Member Functions inherited from L4::Epiface_t< Derived, IFACE, BASE, bool >
l4_msgtag_t	dispatch (l4_msgtag_t tag, unsigned rights, l4_utcb_t *utcb) final
	The abstract handler for client requests to the object.
Public Member Functions inherited from L4::Epiface_t0< RPC_IFACE, BASE >
Type_info::Demand	get_buffer_demand () const
	Get the server-side buffer demand based in IFACE.
Cap< RPC_IFACE >	obj_cap () const
	Get the (typed) capability to this object.
Public Member Functions inherited from L4::Epiface
	Epiface ()
	Make a server object.
virtual	~Epiface ()=0
	Destroy the object.
Stored_cap	obj_cap () const
	Get the capability to the kernel object belonging to this object.
Server_iface *	server_iface () const
	Get pointer to server interface at which the object is currently registered.
int	set_server (Server_iface *srv, Cap< void > cap, bool managed=false)
	Set server registration info for the object.
void	set_obj_cap (Cap< void > const &cap)
	Deprecated server registration function.

Additional Inherited Members
Public Types inherited from L4::Epiface_t0< RPC_IFACE, BASE >
typedef RPC_IFACE	Interface
	Data type of the IPC interface definition.
Public Types inherited from L4::Epiface
typedef Ipc_svr::Server_iface	Server_iface
	Type for abstract server interface.
typedef Ipc_svr::Server_iface::Demand	Demand
	Type for server-side receive buffer demand.
Protected Attributes inherited from L4virtio::Svr::Device_t< DATA >
Mem_list	_mem_info
	Memory region list.

Detailed Description

template<typename Rnd_state, typename Epiface = L4virtio::Device>
class L4virtio::Svr::Virtio_rng< Rnd_state, Epiface >

A server implementation of the virtio-rng protocol.

Template Parameters

Rnd_state	The type that implements the random data generation. Rnd_state::get_random(int len, unsigned char *buf) is called to get len random bytes written into buf TODO: virtio-rng supports providing less random bytes then requested. This API currently does not support that, as I do not have a test case.
Epiface	The Epiface to derive from. Defaults to L4virtio::Device.

Definition at line 33 of file virtio-rng-device.

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The documentation for this class was generated from the following file:

• l4/l4virtio/server/virtio-rng-device