| 787 | } |
| 788 | |
| 789 | func (e *userspaceEngine) Reconfig(cfg *wgcfg.Config, routerCfg *router.Config, dnsCfg *dns.Config) error { |
| 790 | if routerCfg == nil { |
| 791 | panic("routerCfg must not be nil") |
| 792 | } |
| 793 | if dnsCfg == nil { |
| 794 | panic("dnsCfg must not be nil") |
| 795 | } |
| 796 | |
| 797 | e.isLocalAddr.Store(ipset.NewContainsIPFunc(views.SliceOf(routerCfg.LocalAddrs))) |
| 798 | |
| 799 | e.wgLock.Lock() |
| 800 | defer e.wgLock.Unlock() |
| 801 | e.tundev.SetWGConfig(cfg) |
| 802 | |
| 803 | peerSet := make(set.Set[key.NodePublic], len(cfg.Peers)) |
| 804 | |
| 805 | e.mu.Lock() |
| 806 | seq := make([]key.NodePublic, 0, len(cfg.Peers)) |
| 807 | for _, p := range cfg.Peers { |
| 808 | seq = append(seq, p.PublicKey) |
| 809 | peerSet.Add(p.PublicKey) |
| 810 | } |
| 811 | e.peerSequence = views.SliceOf(seq) |
| 812 | |
| 813 | nm := e.netMap |
| 814 | e.mu.Unlock() |
| 815 | |
| 816 | listenPort := e.confListenPort |
| 817 | if e.controlKnobs != nil && e.controlKnobs.RandomizeClientPort.Load() { |
| 818 | listenPort = 0 |
| 819 | } |
| 820 | |
| 821 | peerMTUEnable := e.magicConn.ShouldPMTUD() |
| 822 | |
| 823 | isSubnetRouter := false |
| 824 | if buildfeatures.HasBird && e.birdClient != nil && nm != nil && nm.SelfNode.Valid() { |
| 825 | isSubnetRouter = hasOverlap(nm.SelfNode.PrimaryRoutes(), nm.SelfNode.Hostinfo().RoutableIPs()) |
| 826 | e.logf("[v1] Reconfig: hasOverlap(%v, %v) = %v; isSubnetRouter=%v lastIsSubnetRouter=%v", |
| 827 | nm.SelfNode.PrimaryRoutes(), nm.SelfNode.Hostinfo().RoutableIPs(), |
| 828 | isSubnetRouter, isSubnetRouter, e.lastIsSubnetRouter) |
| 829 | } |
| 830 | isSubnetRouterChanged := buildfeatures.HasAdvertiseRoutes && isSubnetRouter != e.lastIsSubnetRouter |
| 831 | |
| 832 | engineChanged := !e.lastCfgFull.Equal(cfg) |
| 833 | routerChanged := checkchange.Update(&e.lastRouter, routerCfg) |
| 834 | dnsChanged := buildfeatures.HasDNS && !e.lastDNSConfig.Equal(dnsCfg.View()) |
| 835 | if dnsChanged { |
| 836 | e.lastDNSConfig = dnsCfg.View() |
| 837 | } |
| 838 | |
| 839 | listenPortChanged := listenPort != e.magicConn.LocalPort() |
| 840 | peerMTUChanged := peerMTUEnable != e.magicConn.PeerMTUEnabled() |
| 841 | if !engineChanged && !routerChanged && !dnsChanged && !listenPortChanged && !isSubnetRouterChanged && !peerMTUChanged { |
| 842 | return ErrNoChanges |
| 843 | } |
| 844 | newLogIDs := cfg.NetworkLogging |
| 845 | oldLogIDs := e.lastCfgFull.NetworkLogging |
| 846 | netLogIDsNowValid := !newLogIDs.NodeID.IsZero() && !newLogIDs.DomainID.IsZero() |