Virtio_net_request Class Reference

Abstraction for a network request. More...

#include <request.h>

Collaboration diagram for Virtio_net_request:

Public Member Functions
const uint8_t *	buffer (size_t *size) const
	Get the location and size of the current buffer.
Mac_addr	dst_mac () const
	Get the Mac address of the destination port.
Mac_addr	src_mac () const
	Get the Mac address of the source port.

Static Public Member Functions
static void	drop_requests (Virtio_net *dev, L4virtio::Svr::Virtqueue *queue)
	Drop all requests of a specific queue.
static std::optional< Virtio_net_request >	get_request (Virtio_net *dev, L4virtio::Svr::Virtqueue *queue)
	Construct a request from the next entry of a provided queue.

Detailed Description

Abstraction for a network request.

A Virtio_net_request is constructed by the source port, using the static function get_request() as part of Virtio_port::get_tx_request().

On destruction, finish() will be called, which, will trigger the client IRQ of the source client.

Definition at line 35 of file request.h.

Member Function Documentation

buffer()

const uint8_t * Virtio_net_request::buffer ( size_t *  size ) const

inline

Get the location and size of the current buffer.

Parameters

[out]

size

Size of the current buffer.

Returns

Address of the current buffer.

This function returns the address and size of the currently active buffer for this request. The buffer might only be a part of the request, which may consist of more than one buffer.

Definition at line 90 of file request.h.

References L4virtio::Svr::Data_buffer::left, and L4virtio::Svr::Data_buffer::pos.

drop_requests()

static void Virtio_net_request::drop_requests ( Virtio_net *  dev, L4virtio::Svr::Virtqueue *  queue  )

inlinestatic

Drop all requests of a specific queue.

This function is used for example to drop all requests in the transmission queue of a monitor port, since monitor ports are not allowed to transmit data.

Parameters

dev	Port of the provided virtqueue.
queue	Virtqueue to drop all requests of.

Definition at line 222 of file request.h.

References L4virtio::Svr::Virtqueue::desc_avail(), L4virtio::Svr::Virtqueue::finish(), L4_UNLIKELY, L4virtio::Svr::Device_t< DATA >::mem_info(), L4virtio::Svr::Virtqueue::next_avail(), L4virtio::Virtqueue::ready(), and L4virtio::Svr::Request_processor::start().

Referenced by Virtio_port::drop_requests().

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get_request()

static std::optional< Virtio_net_request > Virtio_net_request::get_request ( Virtio_net *  dev, L4virtio::Svr::Virtqueue *  queue  )

inlinestatic

Construct a request from the next entry of a provided queue.

Parameters

dev	Port of the provided virtqueue.
queue	Virtqueue to extract next entry from.

Definition at line 249 of file request.h.

References L4_UNLIKELY, L4virtio::Svr::Virtqueue::next_avail(), and L4virtio::Virtqueue::ready().

Referenced by Virtio_port::get_tx_request().

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

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