mirror of
https://github.com/DragonOS-Community/DragonOS.git
synced 2025-06-14 20:26:48 +00:00
289 lines
8.8 KiB
Rust
289 lines
8.8 KiB
Rust
use alloc::{fmt, vec::Vec};
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use alloc::{string::String, sync::Arc};
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use smoltcp::{
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iface,
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wire::{self, EthernetAddress},
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};
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use sysfs::netdev_register_kobject;
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use crate::{
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libs::{rwlock::RwLock, spinlock::SpinLock},
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net::socket::inet::{common::PortManager, InetSocket},
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process::ProcessState,
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};
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use smoltcp;
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use system_error::SystemError;
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pub mod class;
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mod dma;
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pub mod e1000e;
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pub mod irq_handle;
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pub mod loopback;
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pub mod sysfs;
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pub mod virtio_net;
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bitflags! {
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pub struct NetDeivceState: u16 {
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/// 表示网络设备已经启动
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const __LINK_STATE_START = 1 << 0;
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/// 表示网络设备在系统中存在，即注册到sysfs中
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const __LINK_STATE_PRESENT = 1 << 1;
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/// 表示网络设备没有检测到载波信号
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const __LINK_STATE_NOCARRIER = 1 << 2;
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/// 表示设备的链路监视操作处于挂起状态
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const __LINK_STATE_LINKWATCH_PENDING = 1 << 3;
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/// 表示设备处于休眠状态
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const __LINK_STATE_DORMANT = 1 << 4;
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}
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}
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#[derive(Debug, Copy, Clone)]
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#[allow(dead_code, non_camel_case_types)]
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pub enum Operstate {
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/// 网络接口的状态未知
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IF_OPER_UNKNOWN = 0,
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/// 网络接口不存在
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IF_OPER_NOTPRESENT = 1,
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/// 网络接口已禁用或未连接
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IF_OPER_DOWN = 2,
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/// 网络接口的下层接口已关闭
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IF_OPER_LOWERLAYERDOWN = 3,
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/// 网络接口正在测试
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IF_OPER_TESTING = 4,
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/// 网络接口处于休眠状态
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IF_OPER_DORMANT = 5,
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/// 网络接口已启用
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IF_OPER_UP = 6,
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}
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#[allow(dead_code)]
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pub trait Iface: crate::driver::base::device::Device {
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/// # `common`
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/// 获取网卡的公共信息
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fn common(&self) -> &IfaceCommon;
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/// # `mac`
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/// 获取网卡的MAC地址
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fn mac(&self) -> smoltcp::wire::EthernetAddress;
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/// # `name`
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/// 获取网卡名
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fn iface_name(&self) -> String;
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/// # `nic_id`
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/// 获取网卡id
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fn nic_id(&self) -> usize {
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self.common().iface_id
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}
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/// # `poll`
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/// 用于轮询接口的状态。
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/// ## 参数
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/// - `sockets` ：一个可变引用到 `smoltcp::iface::SocketSet`，表示要轮询的套接字集
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/// ## 返回值
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/// - 成功返回 `Ok(())`
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/// - 如果轮询失败，返回 `Err(SystemError::EAGAIN_OR_EWOULDBLOCK)`，表示需要再次尝试或者操作会阻塞
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fn poll(&self);
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/// # `update_ip_addrs`
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/// 用于更新接口的 IP 地址
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/// ## 参数
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/// - `ip_addrs` ：一个包含 `smoltcp::wire::IpCidr` 的切片，表示要设置的 IP 地址和子网掩码
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/// ## 返回值
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/// - 如果 `ip_addrs` 的长度不为 1，返回 `Err(SystemError::EINVAL)`，表示输入参数无效
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fn update_ip_addrs(&self, ip_addrs: &[smoltcp::wire::IpCidr]) -> Result<(), SystemError> {
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self.common().update_ip_addrs(ip_addrs)
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}
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/// @brief 获取smoltcp的网卡接口类型
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#[inline(always)]
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fn smol_iface(&self) -> &SpinLock<smoltcp::iface::Interface> {
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&self.common().smol_iface
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}
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// fn as_any_ref(&'static self) -> &'static dyn core::any::Any;
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/// # `sockets`
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/// 获取网卡的套接字集
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fn sockets(&self) -> &SpinLock<smoltcp::iface::SocketSet<'static>> {
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&self.common().sockets
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}
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/// # `port_manager`
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/// 用于管理网卡的端口
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fn port_manager(&self) -> &PortManager {
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&self.common().port_manager
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}
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fn addr_assign_type(&self) -> u8;
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fn net_device_type(&self) -> u16;
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fn net_state(&self) -> NetDeivceState;
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fn set_net_state(&self, state: NetDeivceState);
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fn operstate(&self) -> Operstate;
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fn set_operstate(&self, state: Operstate);
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}
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/// 网络设备的公共数据
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#[derive(Debug)]
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pub struct NetDeviceCommonData {
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/// 表示网络接口的地址分配类型
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pub addr_assign_type: u8,
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/// 表示网络接口的类型
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pub net_device_type: u16,
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/// 表示网络接口的状态
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pub state: NetDeivceState,
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/// 表示网络接口的操作状态
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pub operstate: Operstate,
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}
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impl Default for NetDeviceCommonData {
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fn default() -> Self {
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Self {
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addr_assign_type: 0,
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net_device_type: 1,
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state: NetDeivceState::empty(),
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operstate: Operstate::IF_OPER_UNKNOWN,
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}
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}
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}
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/// 将网络设备注册到sysfs中
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/// 参考：https://code.dragonos.org.cn/xref/linux-2.6.39/net/core/dev.c?fi=register_netdev#5373
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fn register_netdevice(dev: Arc<dyn Iface>) -> Result<(), SystemError> {
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// 在sysfs中注册设备
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netdev_register_kobject(dev.clone())?;
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// 标识网络设备在系统中存在
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dev.set_net_state(NetDeivceState::__LINK_STATE_PRESENT);
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return Ok(());
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}
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pub struct IfaceCommon {
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iface_id: usize,
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smol_iface: SpinLock<smoltcp::iface::Interface>,
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/// 存smoltcp网卡的套接字集
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sockets: SpinLock<smoltcp::iface::SocketSet<'static>>,
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/// 存 kernel wrap smoltcp socket 的集合
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bounds: RwLock<Vec<Arc<dyn InetSocket>>>,
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/// 端口管理器
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port_manager: PortManager,
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/// 下次轮询的时间
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poll_at_ms: core::sync::atomic::AtomicU64,
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}
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impl fmt::Debug for IfaceCommon {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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f.debug_struct("IfaceCommon")
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.field("iface_id", &self.iface_id)
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.field("sockets", &self.sockets)
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.field("bounds", &self.bounds)
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.field("port_manager", &self.port_manager)
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.field("poll_at_ms", &self.poll_at_ms)
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.finish()
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}
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}
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impl IfaceCommon {
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pub fn new(iface_id: usize, iface: smoltcp::iface::Interface) -> Self {
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IfaceCommon {
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iface_id,
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smol_iface: SpinLock::new(iface),
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sockets: SpinLock::new(smoltcp::iface::SocketSet::new(Vec::new())),
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bounds: RwLock::new(Vec::new()),
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port_manager: PortManager::new(),
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poll_at_ms: core::sync::atomic::AtomicU64::new(0),
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}
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}
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pub fn poll<D>(&self, device: &mut D)
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where
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D: smoltcp::phy::Device + ?Sized,
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{
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let timestamp = crate::time::Instant::now().into();
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let mut sockets = self.sockets.lock_irqsave();
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let mut interface = self.smol_iface.lock_irqsave();
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let (has_events, poll_at) = {
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let mut has_events = false;
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let mut poll_at;
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loop {
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has_events |= interface.poll(timestamp, device, &mut sockets);
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poll_at = interface.poll_at(timestamp, &sockets);
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let Some(instant) = poll_at else {
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break;
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};
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if instant > timestamp {
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break;
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}
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}
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(has_events, poll_at)
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};
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// drop sockets here to avoid deadlock
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drop(interface);
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drop(sockets);
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use core::sync::atomic::Ordering;
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if let Some(instant) = poll_at {
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let _old_instant = self.poll_at_ms.load(Ordering::Relaxed);
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let new_instant = instant.total_millis() as u64;
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self.poll_at_ms.store(new_instant, Ordering::Relaxed);
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// if old_instant == 0 || new_instant < old_instant {
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// self.polling_wait_queue.wake_all();
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// }
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} else {
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self.poll_at_ms.store(0, Ordering::Relaxed);
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}
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// if has_events {
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// log::debug!("IfaceCommon::poll: has_events");
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// We never try to hold the write lock in the IRQ context, and we disable IRQ when
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// holding the write lock. So we don't need to disable IRQ when holding the read lock.
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self.bounds.read().iter().for_each(|bound_socket| {
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bound_socket.on_iface_events();
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if has_events {
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bound_socket
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.wait_queue()
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.wakeup(Some(ProcessState::Blocked(true)));
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}
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});
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// let closed_sockets = self
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// .closing_sockets
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// .lock_irq_disabled()
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// .extract_if(|closing_socket| closing_socket.is_closed())
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// .collect::<Vec<_>>();
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// drop(closed_sockets);
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// }
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}
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pub fn update_ip_addrs(&self, ip_addrs: &[smoltcp::wire::IpCidr]) -> Result<(), SystemError> {
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if ip_addrs.len() != 1 {
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return Err(SystemError::EINVAL);
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}
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self.smol_iface.lock().update_ip_addrs(|addrs| {
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let dest = addrs.iter_mut().next();
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if let Some(dest) = dest {
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*dest = ip_addrs[0];
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} else {
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addrs.push(ip_addrs[0]).expect("Push ipCidr failed: full");
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}
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});
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return Ok(());
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}
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// 需要bounds储存具体的Inet Socket信息，以提供不同种类inet socket的事件分发
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pub fn bind_socket(&self, socket: Arc<dyn InetSocket>) {
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self.bounds.write().push(socket);
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}
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}
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