mirror of
https://github.com/DragonOS-Community/DragonOS.git
synced 2025-06-09 19:36:47 +00:00
289 lines
8.8 KiB
Rust
289 lines
8.8 KiB
Rust
use alloc::{fmt, vec::Vec};
|
||
use alloc::{string::String, sync::Arc};
|
||
use smoltcp::{
|
||
iface,
|
||
wire::{self, EthernetAddress},
|
||
};
|
||
use sysfs::netdev_register_kobject;
|
||
|
||
use crate::{
|
||
libs::{rwlock::RwLock, spinlock::SpinLock},
|
||
net::socket::inet::{common::PortManager, InetSocket},
|
||
process::ProcessState,
|
||
};
|
||
use smoltcp;
|
||
use system_error::SystemError;
|
||
|
||
pub mod class;
|
||
mod dma;
|
||
pub mod e1000e;
|
||
pub mod irq_handle;
|
||
pub mod loopback;
|
||
pub mod sysfs;
|
||
pub mod virtio_net;
|
||
|
||
bitflags! {
|
||
pub struct NetDeivceState: u16 {
|
||
/// 表示网络设备已经启动
|
||
const __LINK_STATE_START = 1 << 0;
|
||
/// 表示网络设备在系统中存在，即注册到sysfs中
|
||
const __LINK_STATE_PRESENT = 1 << 1;
|
||
/// 表示网络设备没有检测到载波信号
|
||
const __LINK_STATE_NOCARRIER = 1 << 2;
|
||
/// 表示设备的链路监视操作处于挂起状态
|
||
const __LINK_STATE_LINKWATCH_PENDING = 1 << 3;
|
||
/// 表示设备处于休眠状态
|
||
const __LINK_STATE_DORMANT = 1 << 4;
|
||
}
|
||
}
|
||
|
||
#[derive(Debug, Copy, Clone)]
|
||
#[allow(dead_code, non_camel_case_types)]
|
||
pub enum Operstate {
|
||
/// 网络接口的状态未知
|
||
IF_OPER_UNKNOWN = 0,
|
||
/// 网络接口不存在
|
||
IF_OPER_NOTPRESENT = 1,
|
||
/// 网络接口已禁用或未连接
|
||
IF_OPER_DOWN = 2,
|
||
/// 网络接口的下层接口已关闭
|
||
IF_OPER_LOWERLAYERDOWN = 3,
|
||
/// 网络接口正在测试
|
||
IF_OPER_TESTING = 4,
|
||
/// 网络接口处于休眠状态
|
||
IF_OPER_DORMANT = 5,
|
||
/// 网络接口已启用
|
||
IF_OPER_UP = 6,
|
||
}
|
||
|
||
#[allow(dead_code)]
|
||
pub trait Iface: crate::driver::base::device::Device {
|
||
/// # `common`
|
||
/// 获取网卡的公共信息
|
||
fn common(&self) -> &IfaceCommon;
|
||
|
||
/// # `mac`
|
||
/// 获取网卡的MAC地址
|
||
fn mac(&self) -> smoltcp::wire::EthernetAddress;
|
||
|
||
/// # `name`
|
||
/// 获取网卡名
|
||
fn iface_name(&self) -> String;
|
||
|
||
/// # `nic_id`
|
||
/// 获取网卡id
|
||
fn nic_id(&self) -> usize {
|
||
self.common().iface_id
|
||
}
|
||
|
||
/// # `poll`
|
||
/// 用于轮询接口的状态。
|
||
/// ## 参数
|
||
/// - `sockets` ：一个可变引用到 `smoltcp::iface::SocketSet`，表示要轮询的套接字集
|
||
/// ## 返回值
|
||
/// - 成功返回 `Ok(())`
|
||
/// - 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
|
||
fn poll(&self);
|
||
|
||
/// # `update_ip_addrs`
|
||
/// 用于更新接口的 IP 地址
|
||
/// ## 参数
|
||
/// - `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
|
||
/// ## 返回值
|
||
/// - 如果 `ip_addrs` 的长度不为 1，返回 `Err(SystemError::EINVAL)`，表示输入参数无效
|
||
fn update_ip_addrs(&self, ip_addrs: &[smoltcp::wire::IpCidr]) -> Result<(), SystemError> {
|
||
self.common().update_ip_addrs(ip_addrs)
|
||
}
|
||
|
||
/// @brief 获取smoltcp的网卡接口类型
|
||
#[inline(always)]
|
||
fn smol_iface(&self) -> &SpinLock<smoltcp::iface::Interface> {
|
||
&self.common().smol_iface
|
||
}
|
||
// fn as_any_ref(&'static self) -> &'static dyn core::any::Any;
|
||
|
||
/// # `sockets`
|
||
/// 获取网卡的套接字集
|
||
fn sockets(&self) -> &SpinLock<smoltcp::iface::SocketSet<'static>> {
|
||
&self.common().sockets
|
||
}
|
||
|
||
/// # `port_manager`
|
||
/// 用于管理网卡的端口
|
||
fn port_manager(&self) -> &PortManager {
|
||
&self.common().port_manager
|
||
}
|
||
|
||
fn addr_assign_type(&self) -> u8;
|
||
|
||
fn net_device_type(&self) -> u16;
|
||
|
||
fn net_state(&self) -> NetDeivceState;
|
||
|
||
fn set_net_state(&self, state: NetDeivceState);
|
||
|
||
fn operstate(&self) -> Operstate;
|
||
|
||
fn set_operstate(&self, state: Operstate);
|
||
}
|
||
|
||
/// 网络设备的公共数据
|
||
#[derive(Debug)]
|
||
pub struct NetDeviceCommonData {
|
||
/// 表示网络接口的地址分配类型
|
||
pub addr_assign_type: u8,
|
||
/// 表示网络接口的类型
|
||
pub net_device_type: u16,
|
||
/// 表示网络接口的状态
|
||
pub state: NetDeivceState,
|
||
/// 表示网络接口的操作状态
|
||
pub operstate: Operstate,
|
||
}
|
||
|
||
impl Default for NetDeviceCommonData {
|
||
fn default() -> Self {
|
||
Self {
|
||
addr_assign_type: 0,
|
||
net_device_type: 1,
|
||
state: NetDeivceState::empty(),
|
||
operstate: Operstate::IF_OPER_UNKNOWN,
|
||
}
|
||
}
|
||
}
|
||
|
||
/// 将网络设备注册到sysfs中
|
||
/// 参考：https://code.dragonos.org.cn/xref/linux-2.6.39/net/core/dev.c?fi=register_netdev#5373
|
||
fn register_netdevice(dev: Arc<dyn Iface>) -> Result<(), SystemError> {
|
||
// 在sysfs中注册设备
|
||
netdev_register_kobject(dev.clone())?;
|
||
|
||
// 标识网络设备在系统中存在
|
||
dev.set_net_state(NetDeivceState::__LINK_STATE_PRESENT);
|
||
|
||
return Ok(());
|
||
}
|
||
|
||
pub struct IfaceCommon {
|
||
iface_id: usize,
|
||
smol_iface: SpinLock<smoltcp::iface::Interface>,
|
||
/// 存smoltcp网卡的套接字集
|
||
sockets: SpinLock<smoltcp::iface::SocketSet<'static>>,
|
||
/// 存 kernel wrap smoltcp socket 的集合
|
||
bounds: RwLock<Vec<Arc<dyn InetSocket>>>,
|
||
/// 端口管理器
|
||
port_manager: PortManager,
|
||
/// 下次轮询的时间
|
||
poll_at_ms: core::sync::atomic::AtomicU64,
|
||
}
|
||
|
||
impl fmt::Debug for IfaceCommon {
|
||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||
f.debug_struct("IfaceCommon")
|
||
.field("iface_id", &self.iface_id)
|
||
.field("sockets", &self.sockets)
|
||
.field("bounds", &self.bounds)
|
||
.field("port_manager", &self.port_manager)
|
||
.field("poll_at_ms", &self.poll_at_ms)
|
||
.finish()
|
||
}
|
||
}
|
||
|
||
impl IfaceCommon {
|
||
pub fn new(iface_id: usize, iface: smoltcp::iface::Interface) -> Self {
|
||
IfaceCommon {
|
||
iface_id,
|
||
smol_iface: SpinLock::new(iface),
|
||
sockets: SpinLock::new(smoltcp::iface::SocketSet::new(Vec::new())),
|
||
bounds: RwLock::new(Vec::new()),
|
||
port_manager: PortManager::new(),
|
||
poll_at_ms: core::sync::atomic::AtomicU64::new(0),
|
||
}
|
||
}
|
||
|
||
pub fn poll<D>(&self, device: &mut D)
|
||
where
|
||
D: smoltcp::phy::Device + ?Sized,
|
||
{
|
||
let timestamp = crate::time::Instant::now().into();
|
||
let mut sockets = self.sockets.lock_irqsave();
|
||
let mut interface = self.smol_iface.lock_irqsave();
|
||
|
||
let (has_events, poll_at) = {
|
||
let mut has_events = false;
|
||
let mut poll_at;
|
||
loop {
|
||
has_events |= interface.poll(timestamp, device, &mut sockets);
|
||
poll_at = interface.poll_at(timestamp, &sockets);
|
||
let Some(instant) = poll_at else {
|
||
break;
|
||
};
|
||
if instant > timestamp {
|
||
break;
|
||
}
|
||
}
|
||
(has_events, poll_at)
|
||
};
|
||
|
||
// drop sockets here to avoid deadlock
|
||
drop(interface);
|
||
drop(sockets);
|
||
|
||
use core::sync::atomic::Ordering;
|
||
if let Some(instant) = poll_at {
|
||
let _old_instant = self.poll_at_ms.load(Ordering::Relaxed);
|
||
let new_instant = instant.total_millis() as u64;
|
||
self.poll_at_ms.store(new_instant, Ordering::Relaxed);
|
||
|
||
// if old_instant == 0 || new_instant < old_instant {
|
||
// self.polling_wait_queue.wake_all();
|
||
// }
|
||
} else {
|
||
self.poll_at_ms.store(0, Ordering::Relaxed);
|
||
}
|
||
|
||
// if has_events {
|
||
|
||
// log::debug!("IfaceCommon::poll: has_events");
|
||
// We never try to hold the write lock in the IRQ context, and we disable IRQ when
|
||
// holding the write lock. So we don't need to disable IRQ when holding the read lock.
|
||
self.bounds.read().iter().for_each(|bound_socket| {
|
||
bound_socket.on_iface_events();
|
||
if has_events {
|
||
bound_socket
|
||
.wait_queue()
|
||
.wakeup(Some(ProcessState::Blocked(true)));
|
||
}
|
||
});
|
||
|
||
// let closed_sockets = self
|
||
// .closing_sockets
|
||
// .lock_irq_disabled()
|
||
// .extract_if(|closing_socket| closing_socket.is_closed())
|
||
// .collect::<Vec<_>>();
|
||
// drop(closed_sockets);
|
||
// }
|
||
}
|
||
|
||
pub fn update_ip_addrs(&self, ip_addrs: &[smoltcp::wire::IpCidr]) -> Result<(), SystemError> {
|
||
if ip_addrs.len() != 1 {
|
||
return Err(SystemError::EINVAL);
|
||
}
|
||
|
||
self.smol_iface.lock().update_ip_addrs(|addrs| {
|
||
let dest = addrs.iter_mut().next();
|
||
|
||
if let Some(dest) = dest {
|
||
*dest = ip_addrs[0];
|
||
} else {
|
||
addrs.push(ip_addrs[0]).expect("Push ipCidr failed: full");
|
||
}
|
||
});
|
||
return Ok(());
|
||
}
|
||
|
||
// 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
|
||
pub fn bind_socket(&self, socket: Arc<dyn InetSocket>) {
|
||
self.bounds.write().push(socket);
|
||
}
|
||
}
|