virtio::SplitVirtqueue::Desc Struct Reference

Virtqueue 描述符表条目 More...

#include <split.hpp>

Collaboration diagram for virtio::SplitVirtqueue::Desc:

Public Attributes
uint64_t	addr
	缓冲区的客户机物理地址 (little-endian)
uint32_t	len
	缓冲区长度(字节) (little-endian)
uint16_t	flags
	标志位: DescFlags (little-endian)
uint16_t	next
	下一个描述符的索引(当 flags & kDescFNext 时有效) (little-endian)

Static Public Attributes
static constexpr size_t	kAlign = 16
	Descriptor Table 对齐要求(字节)

Detailed Description

Virtqueue 描述符表条目

描述符表引用驱动程序使用的缓冲区。每个描述符描述一个缓冲区， 该缓冲区对设备是只读的("设备可读")或只写的("设备可写")。

Note

16 字节对齐

See also

virtio-v1.2#2.7.5 The Virtqueue Descriptor Table

Definition at line 80 of file split.hpp.

Member Data Documentation

addr

uint64_t virtio::SplitVirtqueue::Desc::addr

缓冲区的客户机物理地址 (little-endian)

Definition at line 84 of file split.hpp.

flags

uint16_t virtio::SplitVirtqueue::Desc::flags

标志位: DescFlags (little-endian)

Definition at line 88 of file split.hpp.

kAlign

constexpr size_t virtio::SplitVirtqueue::Desc::kAlign = 16

staticconstexpr

Descriptor Table 对齐要求(字节)

Definition at line 82 of file split.hpp.

len

uint32_t virtio::SplitVirtqueue::Desc::len

缓冲区长度(字节) (little-endian)

Definition at line 86 of file split.hpp.

next

uint16_t virtio::SplitVirtqueue::Desc::next

下一个描述符的索引(当 flags & kDescFNext 时有效) (little-endian)

Definition at line 90 of file split.hpp.

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

• /workspaces/SimpleKernel/src/device/virtio/virt_queue/split.hpp