77 lines
1.6 KiB
Go
77 lines
1.6 KiB
Go
package main
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import (
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"errors"
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"fmt"
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"net"
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"sync"
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)
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type RoutingTable struct {
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IPv4 *Trie
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IPv6 *Trie
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mutex sync.RWMutex
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}
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func (table *RoutingTable) Reset() {
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table.mutex.Lock()
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defer table.mutex.Unlock()
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table.IPv4 = nil
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table.IPv6 = nil
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}
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func (table *RoutingTable) RemovePeer(peer *Peer) {
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table.mutex.Lock()
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defer table.mutex.Unlock()
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table.IPv4 = table.IPv4.RemovePeer(peer)
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table.IPv6 = table.IPv6.RemovePeer(peer)
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}
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func (table *RoutingTable) Insert(ip net.IP, cidr uint, peer *Peer) {
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table.mutex.Lock()
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defer table.mutex.Unlock()
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switch len(ip) {
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case net.IPv6len:
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table.IPv6 = table.IPv6.Insert(ip, cidr, peer)
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case net.IPv4len:
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table.IPv4 = table.IPv4.Insert(ip, cidr, peer)
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default:
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panic(errors.New("Inserting unknown address type"))
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}
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}
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func (table *RoutingTable) LookupIPv4(address []byte) *Peer {
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table.mutex.RLock()
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defer table.mutex.RUnlock()
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return table.IPv4.Lookup(address)
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}
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func (table *RoutingTable) LookupIPv6(address []byte) *Peer {
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table.mutex.RLock()
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defer table.mutex.RUnlock()
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return table.IPv6.Lookup(address)
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}
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func OutgoingRoutingWorker(device *Device, queue chan []byte) {
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for {
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packet := <-queue
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switch packet[0] >> 4 {
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case IPv4version:
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dst := packet[IPv4offsetDst : IPv4offsetDst+net.IPv4len]
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peer := device.routingTable.LookupIPv4(dst)
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fmt.Println("IPv4", peer)
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case IPv6version:
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dst := packet[IPv6offsetDst : IPv6offsetDst+net.IPv6len]
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peer := device.routingTable.LookupIPv6(dst)
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fmt.Println("IPv6", peer)
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default:
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// todo: log
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fmt.Println("Unknown IP version")
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}
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}
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}
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