netstack/tcpip/stack/nic.go

package stack

import (
	"sync"

	"github.com/impact-eintr/netstack/tcpip"
)

type referencedNetworkEndpoint struct {
	//ilist.Entry
	//refs     int32
	//ep       NetworkEndpoint
	//nic      *NIC
	//protocol tcpip.NetworkProtocolNumber
	//linkCache LinkAddressCache
	//holdsInserRef bool
}

// 代表一个网卡对象
type NIC struct {
	stack *Stack
	// 每个网卡唯一的标识号
	id tcpip.NICID
	// 网卡名 可有可无
	name string
	// 链路层端
	linkEP LinkEndpoint
	// 传输层的解复用
	demux *transportDemuxer

	mu          sync.RWMutex
	spoofing    bool
	promiscuous bool
	primary     map[tcpip.NetworkProtocolNumber]*ilist.List
	// 网络层端的记录
	endpoints map[tcpip.NetworkEndpointID]*referencedNetworkEndpoint
	// 子网的记录
	subnets []tcpip.Subnet
}