Virtio_net Class Reference

The Base class of a Port. More...

#include <virtio_net.h>

Inheritance diagram for Virtio_net:

Collaboration diagram for Virtio_net:

Public Member Functions
void	reset () override
	reset callback, called for doing a device reset
int	reconfig_queue (unsigned index) override
	callback for client queue-config request
bool	check_features () override
	callback for checking the subset of accepted features
bool	check_queues () override
	Check whether both virtqueues are ready.
void	register_single_driver_irq () override
	Save the _kick_guest_irq that the client sent via device_notification_irq().
void	trigger_driver_config_irq () override
	callback for triggering configuration change notification IRQ
void	notify_queue (L4virtio::Svr::Virtqueue *queue)
	Trigger the _kick_guest_irq IRQ.
Virtqueue *	tx_q ()
	Getter for the transmission queue.
Virtqueue *	rx_q ()
	Getter for the receive queue.
Virtqueue const *	tx_q () const
	Getter for the transmission queue.
Virtqueue const *	rx_q () const
	Getter for the receive queue.
Public Member Functions inherited from L4virtio::Svr::Device_t< No_custom_data >
virtual void	cfg_changed (unsigned)
	callback for client device configuration changes
virtual L4::Cap< L4::Irq >	device_notify_irq () const
	callback to gather the device notification IRQ (old-style)
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_t0< L4virtio::Device, L4::Epiface >
Type_info::Demand	get_buffer_demand () const
	Get the server-side buffer demand based in IFACE.
Cap< L4virtio::Device >	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< L4virtio::Device, L4::Epiface >
typedef L4virtio::Device	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< No_custom_data >
Mem_list	_mem_info
	Memory region list.

Detailed Description

The Base class of a Port.

This class provides the Virtio network protocol specific implementation aspects of a port.

Virtio_net comprises the virtqueues for both, the incoming and the outgoing network requests:

• The transmission queue, containing requests to be transmitted to other ports. The transmission queue is filled by the client, this port relates to.
• The receive queue, containing requests that have been transmitted from other ports. The receive queue is filled by the switch.

Definition at line 71 of file virtio_net.h.

Member Function Documentation

notify_queue()

void Virtio_net::notify_queue ( L4virtio::Svr::Virtqueue * queue )

inline

Trigger the _kick_guest_irq IRQ.

This function gets called on the receiving port, when a request was successfully transmitted by the switch.

Definition at line 269 of file virtio_net.h.

References L4VIRTIO_IRQ_STATUS_VRING.

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

• pkg/virtio-net-switch/server/switch/virtio_net.h