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@ -286,20 +286,20 @@ type Conn struct {
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// is named negatively because in early start-up, we don't yet
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// necessarily have a netcheck.Report and don't want to skip
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// logging.
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noV4, noV6 syncs.AtomicBool
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noV4, noV6 atomic.Bool
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// noV4Send is whether IPv4 UDP is known to be unable to transmit
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// at all. This could happen if the socket is in an invalid state
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// (as can happen on darwin after a network link status change).
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noV4Send syncs.AtomicBool
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noV4Send atomic.Bool
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// networkUp is whether the network is up (some interface is up
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// with IPv4 or IPv6). It's used to suppress log spam and prevent
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// new connection that'll fail.
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networkUp syncs.AtomicBool
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networkUp atomic.Bool
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// havePrivateKey is whether privateKey is non-zero.
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havePrivateKey syncs.AtomicBool
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havePrivateKey atomic.Bool
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publicKeyAtomic atomic.Value // of key.NodePublic (or NodeKey zero value if !havePrivateKey)
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// derpMapAtomic is the same as derpMap, but without requiring
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@ -310,7 +310,7 @@ type Conn struct {
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lastNetCheckReport atomic.Pointer[netcheck.Report]
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// port is the preferred port from opts.Port; 0 means auto.
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port syncs.AtomicUint32
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port atomic.Uint32
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// ============================================================
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// mu guards all following fields; see userspaceEngine lock
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@ -531,7 +531,7 @@ func newConn() *Conn {
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}
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c.bind = &connBind{Conn: c, closed: true}
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c.muCond = sync.NewCond(&c.mu)
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c.networkUp.Set(true) // assume up until told otherwise
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c.networkUp.Store(true) // assume up until told otherwise
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return c
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}
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@ -542,7 +542,7 @@ func newConn() *Conn {
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// It doesn't start doing anything until Start is called.
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func NewConn(opts Options) (*Conn, error) {
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c := newConn()
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c.port.Set(uint32(opts.Port))
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c.port.Store(uint32(opts.Port))
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c.logf = opts.logf()
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c.epFunc = opts.endpointsFunc()
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c.derpActiveFunc = opts.derpActiveFunc()
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@ -634,7 +634,7 @@ func (c *Conn) updateEndpoints(why string) {
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c.muCond.Broadcast()
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}()
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c.logf("[v1] magicsock: starting endpoint update (%s)", why)
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if c.noV4Send.Get() && runtime.GOOS != "js" {
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if c.noV4Send.Load() && runtime.GOOS != "js" {
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c.mu.Lock()
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closed := c.closed
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c.mu.Unlock()
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@ -736,9 +736,9 @@ func (c *Conn) updateNetInfo(ctx context.Context) (*netcheck.Report, error) {
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}
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c.lastNetCheckReport.Store(report)
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c.noV4.Set(!report.IPv4)
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c.noV6.Set(!report.IPv6)
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c.noV4Send.Set(!report.IPv4CanSend)
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c.noV4.Store(!report.IPv4)
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c.noV6.Store(!report.IPv6)
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c.noV4Send.Store(!report.IPv4CanSend)
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ni := &tailcfg.NetInfo{
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DERPLatency: map[string]float64{},
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@ -1074,7 +1074,7 @@ func (c *Conn) determineEndpoints(ctx context.Context) ([]tailcfg.Endpoint, erro
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// port mapping on their router to the same explicit
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// port that tailscaled is running with. Worst case
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// it's an invalid candidate mapping.
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if port := c.port.Get(); nr.MappingVariesByDestIP.EqualBool(true) && port != 0 {
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if port := c.port.Load(); nr.MappingVariesByDestIP.EqualBool(true) && port != 0 {
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if ip, _, err := net.SplitHostPort(nr.GlobalV4); err == nil {
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addAddr(ipp(net.JoinHostPort(ip, strconv.Itoa(int(port)))), tailcfg.EndpointSTUN4LocalPort)
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}
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@ -1167,7 +1167,7 @@ func (c *Conn) LocalPort() uint16 {
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var errNetworkDown = errors.New("magicsock: network down")
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func (c *Conn) networkDown() bool { return !c.networkUp.Get() }
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func (c *Conn) networkDown() bool { return !c.networkUp.Load() }
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func (c *Conn) Send(b []byte, ep conn.Endpoint) error {
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metricSendData.Add(1)
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@ -1207,7 +1207,7 @@ func (c *Conn) sendUDPStd(addr netip.AddrPort, b []byte) (sent bool, err error)
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switch {
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case addr.Addr().Is4():
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_, err = c.pconn4.WriteToUDPAddrPort(b, addr)
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if err != nil && (c.noV4.Get() || neterror.TreatAsLostUDP(err)) {
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if err != nil && (c.noV4.Load() || neterror.TreatAsLostUDP(err)) {
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return false, nil
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}
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case addr.Addr().Is6():
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@ -1216,7 +1216,7 @@ func (c *Conn) sendUDPStd(addr netip.AddrPort, b []byte) (sent bool, err error)
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return false, nil
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}
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_, err = c.pconn6.WriteToUDPAddrPort(b, addr)
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if err != nil && (c.noV6.Get() || neterror.TreatAsLostUDP(err)) {
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if err != nil && (c.noV6.Load() || neterror.TreatAsLostUDP(err)) {
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return false, nil
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}
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default:
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@ -1674,7 +1674,7 @@ func (c *Conn) receiveIP(b []byte, ipp netip.AddrPort, cache *ippEndpointCache)
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if c.handleDiscoMessage(b, ipp, key.NodePublic{}) {
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return nil, false
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}
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if !c.havePrivateKey.Get() {
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if !c.havePrivateKey.Load() {
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// If we have no private key, we're logged out or
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// stopped. Don't try to pass these wireguard packets
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// up to wireguard-go; it'll just complain (issue 1167).
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@ -2140,12 +2140,12 @@ func (c *Conn) discoInfoLocked(k key.DiscoPublic) *discoInfo {
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func (c *Conn) SetNetworkUp(up bool) {
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c.mu.Lock()
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defer c.mu.Unlock()
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if c.networkUp.Get() == up {
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if c.networkUp.Load() == up {
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return
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}
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c.logf("magicsock: SetNetworkUp(%v)", up)
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c.networkUp.Set(up)
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c.networkUp.Store(up)
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if up {
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c.startDerpHomeConnectLocked()
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@ -2157,10 +2157,10 @@ func (c *Conn) SetNetworkUp(up bool) {
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// SetPreferredPort sets the connection's preferred local port.
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func (c *Conn) SetPreferredPort(port uint16) {
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if uint16(c.port.Get()) == port {
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if uint16(c.port.Load()) == port {
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return
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}
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c.port.Set(uint32(port))
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c.port.Store(uint32(port))
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if err := c.rebind(dropCurrentPort); err != nil {
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c.logf("%w", err)
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@ -2185,7 +2185,7 @@ func (c *Conn) SetPrivateKey(privateKey key.NodePrivate) error {
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return nil
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}
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c.privateKey = newKey
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c.havePrivateKey.Set(!newKey.IsZero())
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c.havePrivateKey.Store(!newKey.IsZero())
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if newKey.IsZero() {
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c.publicKeyAtomic.Store(key.NodePublic{})
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@ -2835,7 +2835,7 @@ func (c *Conn) bindSocket(rucPtr **RebindingUDPConn, network string, curPortFate
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// Second best is the port that is currently in use.
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// If those fail, fall back to 0.
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var ports []uint16
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if port := uint16(c.port.Get()); port != 0 {
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if port := uint16(c.port.Load()); port != 0 {
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ports = append(ports, port)
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}
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if ruc.pconn != nil && curPortFate == keepCurrentPort {
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Brad Fitzpatrick
2 years ago
committed by