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 57 fn mac(&self) -> EthernetAddress; 58 59 fn iface_name(&self) -> String; 60 61 /// @brief 获取网卡的id 62 fn nic_id(&self) -> usize; 63 64 fn poll(&self, sockets: &mut iface::SocketSet) -> Result<(), SystemError>; 65 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 69 fn inner_iface(&self) -> &SpinLock<smoltcp::iface::Interface>; 70 // fn as_any_ref(&'static self) -> &'static dyn core::any::Any; 71 72 fn addr_assign_type(&self) -> u8; 73 74 fn net_device_type(&self) -> u16; 75 76 fn net_state(&self) -> NetDeivceState; 77 78 fn set_net_state(&self, state: NetDeivceState); 79 80 fn operstate(&self) -> Operstate; 81 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 { 99 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 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