diff options
Diffstat (limited to 'pkg/tcpip/stack/registration.go')
| -rw-r--r-- | pkg/tcpip/stack/registration.go | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/pkg/tcpip/stack/registration.go b/pkg/tcpip/stack/registration.go index 0ecaa0833..462265281 100644 --- a/pkg/tcpip/stack/registration.go +++ b/pkg/tcpip/stack/registration.go @@ -174,6 +174,10 @@ type NetworkEndpoint interface { // protocol. WritePacket(r *Route, gso *GSO, hdr buffer.Prependable, payload buffer.VectorisedView, protocol tcpip.TransportProtocolNumber, ttl uint8, loop PacketLooping) *tcpip.Error + // WriteHeaderIncludedPacket writes a packet that includes a network + // header to the given destination address. + WriteHeaderIncludedPacket(r *Route, payload buffer.VectorisedView, loop PacketLooping) *tcpip.Error + // ID returns the network protocol endpoint ID. ID() *NetworkEndpointID @@ -357,10 +361,19 @@ type TransportProtocolFactory func() TransportProtocol // instantiate network protocols. type NetworkProtocolFactory func() NetworkProtocol +// UnassociatedEndpointFactory produces endpoints for writing packets not +// associated with a particular transport protocol. Such endpoints can be used +// to write arbitrary packets that include the IP header. +type UnassociatedEndpointFactory interface { + NewUnassociatedRawEndpoint(stack *Stack, netProto tcpip.NetworkProtocolNumber, transProto tcpip.TransportProtocolNumber, waiterQueue *waiter.Queue) (tcpip.Endpoint, *tcpip.Error) +} + var ( transportProtocols = make(map[string]TransportProtocolFactory) networkProtocols = make(map[string]NetworkProtocolFactory) + unassociatedFactory UnassociatedEndpointFactory + linkEPMu sync.RWMutex nextLinkEndpointID tcpip.LinkEndpointID = 1 linkEndpoints = make(map[tcpip.LinkEndpointID]LinkEndpoint) @@ -380,6 +393,13 @@ func RegisterNetworkProtocolFactory(name string, p NetworkProtocolFactory) { networkProtocols[name] = p } +// RegisterUnassociatedFactory registers a factory to produce endpoints not +// associated with any particular transport protocol. This function is intended +// to be called by init() functions of the protocols. +func RegisterUnassociatedFactory(f UnassociatedEndpointFactory) { + unassociatedFactory = f +} + // RegisterLinkEndpoint register a link-layer protocol endpoint and returns an // ID that can be used to refer to it. func RegisterLinkEndpoint(linkEP LinkEndpoint) tcpip.LinkEndpointID { |