1 use alloc::{string::String, sync::Arc};
2 use smoltcp::{
3 iface,
4 wire::{self, EthernetAddress},
5 };
6 use sysfs::netdev_register_kobject;
7
8 use super::base::device::Device;
9 use crate::libs::spinlock::SpinLock;
10 use system_error::SystemError;
11
12 pub mod class;
13 mod dma;
14 pub mod e1000e;
15 pub mod irq_handle;
16 pub mod loopback;
17 pub mod sysfs;
18 pub mod virtio_net;
19
20 bitflags! {
21 pub struct NetDeivceState: u16 {
22 /// 表示网络设备已经启动
23 const __LINK_STATE_START = 1 << 0;
24 /// 表示网络设备在系统中存在，即注册到sysfs中
25 const __LINK_STATE_PRESENT = 1 << 1;
26 /// 表示网络设备没有检测到载波信号
27 const __LINK_STATE_NOCARRIER = 1 << 2;
28 /// 表示设备的链路监视操作处于挂起状态
29 const __LINK_STATE_LINKWATCH_PENDING = 1 << 3;
30 /// 表示设备处于休眠状态
31 const __LINK_STATE_DORMANT = 1 << 4;
32 }
33 }
34
35 #[derive(Debug, Copy, Clone)]
36 #[allow(dead_code, non_camel_case_types)]
37 pub enum Operstate {
38 /// 网络接口的状态未知
39 IF_OPER_UNKNOWN = 0,
40 /// 网络接口不存在
41 IF_OPER_NOTPRESENT = 1,
42 /// 网络接口已禁用或未连接
43 IF_OPER_DOWN = 2,
44 /// 网络接口的下层接口已关闭
45 IF_OPER_LOWERLAYERDOWN = 3,
46 /// 网络接口正在测试
47 IF_OPER_TESTING = 4,
48 /// 网络接口处于休眠状态
49 IF_OPER_DORMANT = 5,
50 /// 网络接口已启用
51 IF_OPER_UP = 6,
52 }
53
54 #[allow(dead_code)]
55 pub trait NetDevice: Device {
56 /// @brief 获取网卡的MAC地址
mac(&self) -> EthernetAddress57 fn mac(&self) -> EthernetAddress;
58
iface_name(&self) -> String59 fn iface_name(&self) -> String;
60
61 /// @brief 获取网卡的id
nic_id(&self) -> usize62 fn nic_id(&self) -> usize;
63
poll(&self, sockets: &mut iface::SocketSet) -> Result<(), SystemError>64 fn poll(&self, sockets: &mut iface::SocketSet) -> Result<(), SystemError>;
65
update_ip_addrs(&self, ip_addrs: &[wire::IpCidr]) -> Result<(), SystemError>66 fn update_ip_addrs(&self, ip_addrs: &[wire::IpCidr]) -> Result<(), SystemError>;
67
68 /// @brief 获取smoltcp的网卡接口类型
inner_iface(&self) -> &SpinLock<smoltcp::iface::Interface>69 fn inner_iface(&self) -> &SpinLock<smoltcp::iface::Interface>;
70 // fn as_any_ref(&'static self) -> &'static dyn core::any::Any;
71
addr_assign_type(&self) -> u872 fn addr_assign_type(&self) -> u8;
73
net_device_type(&self) -> u1674 fn net_device_type(&self) -> u16;
75
net_state(&self) -> NetDeivceState76 fn net_state(&self) -> NetDeivceState;
77
set_net_state(&self, state: NetDeivceState)78 fn set_net_state(&self, state: NetDeivceState);
79
operstate(&self) -> Operstate80 fn operstate(&self) -> Operstate;
81
set_operstate(&self, state: Operstate)82 fn set_operstate(&self, state: Operstate);
83 }
84
85 /// 网络设备的公共数据
86 #[derive(Debug)]
87 pub struct NetDeviceCommonData {
88 /// 表示网络接口的地址分配类型
89 pub addr_assign_type: u8,
90 /// 表示网络接口的类型
91 pub net_device_type: u16,
92 /// 表示网络接口的状态
93 pub state: NetDeivceState,
94 /// 表示网络接口的操作状态
95 pub operstate: Operstate,
96 }
97
98 impl Default for NetDeviceCommonData {
default() -> Self99 fn default() -> Self {
100 Self {
101 addr_assign_type: 0,
102 net_device_type: 1,
103 state: NetDeivceState::empty(),
104 operstate: Operstate::IF_OPER_UNKNOWN,
105 }
106 }
107 }
108
109 /// 将网络设备注册到sysfs中
110 /// 参考：https://code.dragonos.org.cn/xref/linux-2.6.39/net/core/dev.c?fi=register_netdev#5373
register_netdevice(dev: Arc<dyn NetDevice>) -> Result<(), SystemError>111 fn register_netdevice(dev: Arc<dyn NetDevice>) -> Result<(), SystemError> {
112 // 在sysfs中注册设备
113 netdev_register_kobject(dev.clone())?;
114
115 // 标识网络设备在系统中存在
116 dev.set_net_state(NetDeivceState::__LINK_STATE_PRESENT);
117
118 return Ok(());
119 }
120