diff options
Diffstat (limited to 'pkg/tcpip/stack/nic.go')
| -rw-r--r-- | pkg/tcpip/stack/nic.go | 30 |
1 files changed, 22 insertions, 8 deletions
diff --git a/pkg/tcpip/stack/nic.go b/pkg/tcpip/stack/nic.go index 1089fdf35..4452a1302 100644 --- a/pkg/tcpip/stack/nic.go +++ b/pkg/tcpip/stack/nic.go @@ -202,7 +202,7 @@ func (n *NIC) enable() *tcpip.Error { Address: addr, PrefixLen: header.IPv6LinkLocalPrefix.PrefixLen, }, - }, CanBePrimaryEndpoint); err != nil { + }, CanBePrimaryEndpoint, static, false /* deprecated */); err != nil { return err } } @@ -533,7 +533,12 @@ func (n *NIC) getRefOrCreateTemp(protocol tcpip.NetworkProtocolNumber, address t return ref } -func (n *NIC) addPermanentAddressLocked(protocolAddress tcpip.ProtocolAddress, peb PrimaryEndpointBehavior) (*referencedNetworkEndpoint, *tcpip.Error) { +// addPermanentAddressLocked adds a permanent address to n. +// +// If n already has the address in a non-permanent state, +// addPermanentAddressLocked will promote it to permanent and update the +// endpoint with the properties provided. +func (n *NIC) addPermanentAddressLocked(protocolAddress tcpip.ProtocolAddress, peb PrimaryEndpointBehavior, configType networkEndpointConfigType, deprecated bool) (*referencedNetworkEndpoint, *tcpip.Error) { id := NetworkEndpointID{protocolAddress.AddressWithPrefix.Address} if ref, ok := n.endpoints[id]; ok { switch ref.getKind() { @@ -541,10 +546,14 @@ func (n *NIC) addPermanentAddressLocked(protocolAddress tcpip.ProtocolAddress, p // The NIC already have a permanent endpoint with that address. return nil, tcpip.ErrDuplicateAddress case permanentExpired, temporary: - // Promote the endpoint to become permanent and respect - // the new peb. + // Promote the endpoint to become permanent and respect the new peb, + // configType and deprecated status. if ref.tryIncRef() { + // TODO(b/147748385): Perform Duplicate Address Detection when promoting + // an IPv6 endpoint to permanent. ref.setKind(permanent) + ref.deprecated = deprecated + ref.configType = configType refs := n.primary[ref.protocol] for i, r := range refs { @@ -576,9 +585,13 @@ func (n *NIC) addPermanentAddressLocked(protocolAddress tcpip.ProtocolAddress, p } } - return n.addAddressLocked(protocolAddress, peb, permanent, static, false) + return n.addAddressLocked(protocolAddress, peb, permanent, configType, deprecated) } +// addAddressLocked adds a new protocolAddress to n. +// +// If the address is already known by n (irrespective of the state it is in), +// addAddressLocked does nothing and returns tcpip.ErrDuplicateAddress. func (n *NIC) addAddressLocked(protocolAddress tcpip.ProtocolAddress, peb PrimaryEndpointBehavior, kind networkEndpointKind, configType networkEndpointConfigType, deprecated bool) (*referencedNetworkEndpoint, *tcpip.Error) { // TODO(b/141022673): Validate IP address before adding them. @@ -653,7 +666,7 @@ func (n *NIC) addAddressLocked(protocolAddress tcpip.ProtocolAddress, peb Primar func (n *NIC) AddAddress(protocolAddress tcpip.ProtocolAddress, peb PrimaryEndpointBehavior) *tcpip.Error { // Add the endpoint. n.mu.Lock() - _, err := n.addPermanentAddressLocked(protocolAddress, peb) + _, err := n.addPermanentAddressLocked(protocolAddress, peb, static, false /* deprecated */) n.mu.Unlock() return err @@ -935,7 +948,7 @@ func (n *NIC) joinGroupLocked(protocol tcpip.NetworkProtocolNumber, addr tcpip.A Address: addr, PrefixLen: netProto.DefaultPrefixLen(), }, - }, NeverPrimaryEndpoint); err != nil { + }, NeverPrimaryEndpoint, static, false /* deprecated */); err != nil { return err } } @@ -1313,7 +1326,8 @@ type referencedNetworkEndpoint struct { kind networkEndpointKind // configType is the method that was used to configure this endpoint. - // This must never change after the endpoint is added to a NIC. + // This must never change except during endpoint creation and promotion to + // permanent. configType networkEndpointConfigType // deprecated indicates whether or not the endpoint should be considered |