1 use core::{ 2 fmt::{self, Debug}, 3 sync::atomic::AtomicUsize, 4 }; 5 6 use alloc::{collections::BTreeMap, sync::Arc}; 7 8 use crate::{driver::net::NetDevice, libs::rwlock::RwLock}; 9 use smoltcp::wire::IpEndpoint; 10 11 use self::socket::SocketInode; 12 13 pub mod event_poll; 14 pub mod net_core; 15 pub mod socket; 16 pub mod syscall; 17 18 lazy_static! { 19 /// # 所有网络接口的列表 20 /// 这个列表在中断上下文会使用到，因此需要irqsave 21 pub static ref NET_DEVICES: RwLock<BTreeMap<usize, Arc<dyn NetDevice>>> = RwLock::new(BTreeMap::new()); 22 } 23 24 /// 生成网络接口的id (全局自增) 25 pub fn generate_iface_id() -> usize { 26 static IFACE_ID: AtomicUsize = AtomicUsize::new(0); 27 return IFACE_ID.fetch_add(1, core::sync::atomic::Ordering::SeqCst); 28 } 29 30 bitflags! { 31 /// @brief 用于指定socket的关闭类型 32 /// 参考：https://code.dragonos.org.cn/xref/linux-6.1.9/include/net/sock.h?fi=SHUTDOWN_MASK#1573 33 pub struct ShutdownType: u8 { 34 const RCV_SHUTDOWN = 1; 35 const SEND_SHUTDOWN = 2; 36 const SHUTDOWN_MASK = 3; 37 } 38 } 39 40 #[derive(Debug, Clone)] 41 pub enum Endpoint { 42 /// 链路层端点 43 LinkLayer(LinkLayerEndpoint), 44 /// 网络层端点 45 Ip(Option<IpEndpoint>), 46 /// inode端点 47 Inode(Option<Arc<SocketInode>>), 48 // todo: 增加NetLink机制后，增加NetLink端点 49 } 50 51 /// @brief 链路层端点 52 #[derive(Debug, Clone)] 53 pub struct LinkLayerEndpoint { 54 /// 网卡的接口号 55 pub interface: usize, 56 } 57 58 impl LinkLayerEndpoint { 59 /// @brief 创建一个链路层端点 60 /// 61 /// @param interface 网卡的接口号 62 /// 63 /// @return 返回创建的链路层端点 64 pub fn new(interface: usize) -> Self { 65 Self { interface } 66 } 67 } 68 69 /// IP datagram encapsulated protocol. 70 #[derive(Debug, PartialEq, Eq, Clone, Copy)] 71 #[repr(u8)] 72 pub enum Protocol { 73 HopByHop = 0x00, 74 Icmp = 0x01, 75 Igmp = 0x02, 76 Tcp = 0x06, 77 Udp = 0x11, 78 Ipv6Route = 0x2b, 79 Ipv6Frag = 0x2c, 80 Icmpv6 = 0x3a, 81 Ipv6NoNxt = 0x3b, 82 Ipv6Opts = 0x3c, 83 Unknown(u8), 84 } 85 86 impl fmt::Display for Protocol { 87 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { 88 match *self { 89 Protocol::HopByHop => write!(f, "Hop-by-Hop"), 90 Protocol::Icmp => write!(f, "ICMP"), 91 Protocol::Igmp => write!(f, "IGMP"), 92 Protocol::Tcp => write!(f, "TCP"), 93 Protocol::Udp => write!(f, "UDP"), 94 Protocol::Ipv6Route => write!(f, "IPv6-Route"), 95 Protocol::Ipv6Frag => write!(f, "IPv6-Frag"), 96 Protocol::Icmpv6 => write!(f, "ICMPv6"), 97 Protocol::Ipv6NoNxt => write!(f, "IPv6-NoNxt"), 98 Protocol::Ipv6Opts => write!(f, "IPv6-Opts"), 99 Protocol::Unknown(id) => write!(f, "0x{id:02x}"), 100 } 101 } 102 } 103 104 impl From<smoltcp::wire::IpProtocol> for Protocol { 105 fn from(value: smoltcp::wire::IpProtocol) -> Self { 106 let x: u8 = value.into(); 107 Protocol::from(x) 108 } 109 } 110 111 impl From<u8> for Protocol { 112 fn from(value: u8) -> Self { 113 match value { 114 0x00 => Protocol::HopByHop, 115 0x01 => Protocol::Icmp, 116 0x02 => Protocol::Igmp, 117 0x06 => Protocol::Tcp, 118 0x11 => Protocol::Udp, 119 0x2b => Protocol::Ipv6Route, 120 0x2c => Protocol::Ipv6Frag, 121 0x3a => Protocol::Icmpv6, 122 0x3b => Protocol::Ipv6NoNxt, 123 0x3c => Protocol::Ipv6Opts, 124 _ => Protocol::Unknown(value), 125 } 126 } 127 } 128 129 impl From<Protocol> for u8 { 130 fn from(value: Protocol) -> Self { 131 match value { 132 Protocol::HopByHop => 0x00, 133 Protocol::Icmp => 0x01, 134 Protocol::Igmp => 0x02, 135 Protocol::Tcp => 0x06, 136 Protocol::Udp => 0x11, 137 Protocol::Ipv6Route => 0x2b, 138 Protocol::Ipv6Frag => 0x2c, 139 Protocol::Icmpv6 => 0x3a, 140 Protocol::Ipv6NoNxt => 0x3b, 141 Protocol::Ipv6Opts => 0x3c, 142 Protocol::Unknown(id) => id, 143 } 144 } 145 } 146