Trim Network/Transport Endpoint/Protocol

* Remove Capabilities and NICID methods from NetworkEndpoint.

* Remove linkEP and stack parameters from NetworkProtocol.NewEndpoint.
The LinkEndpoint can be fetched from the NetworkInterface. The stack
is passed to the NetworkProtocol when it is created so the
NetworkEndpoint can get it from its protocol.

* Remove stack parameter from TransportProtocol.NewEndpoint.
Like the NetworkProtocol/Endpoint, the stack is passed to the
TransportProtocol when it is created.

PiperOrigin-RevId: 334332721

1 files changed, 2 insertions, 10 deletions

diff --git a/pkg/tcpip/stack/forwarder_test.go b/pkg/tcpip/stack/forwarder_test.go
index 572a2c3b6..4e4b00a92 100644
--- a/pkg/tcpip/stack/forwarder_test.go
+++ b/pkg/tcpip/stack/forwarder_test.go
@@ -70,10 +70,6 @@ func (f *fwdTestNetworkEndpoint) MTU() uint32 {
 	return f.ep.MTU() - uint32(f.MaxHeaderLength())
 }
 
-func (f *fwdTestNetworkEndpoint) NICID() tcpip.NICID {
-	return f.nicID
-}
-
 func (*fwdTestNetworkEndpoint) DefaultTTL() uint8 {
 	return 123
 }
@@ -91,10 +87,6 @@ func (f *fwdTestNetworkEndpoint) PseudoHeaderChecksum(protocol tcpip.TransportPr
 	return 0
 }
 
-func (f *fwdTestNetworkEndpoint) Capabilities() LinkEndpointCapabilities {
-	return f.ep.Capabilities()
-}
-
 func (f *fwdTestNetworkEndpoint) NetworkProtocolNumber() tcpip.NetworkProtocolNumber {
 	return f.proto.Number()
 }
@@ -165,12 +157,12 @@ func (*fwdTestNetworkProtocol) Parse(pkt *PacketBuffer) (tcpip.TransportProtocol
 	return tcpip.TransportProtocolNumber(netHeader[protocolNumberOffset]), true, true
 }
 
-func (f *fwdTestNetworkProtocol) NewEndpoint(nic NetworkInterface, _ LinkAddressCache, _ NUDHandler, dispatcher TransportDispatcher, ep LinkEndpoint, _ *Stack) NetworkEndpoint {
+func (f *fwdTestNetworkProtocol) NewEndpoint(nic NetworkInterface, _ LinkAddressCache, _ NUDHandler, dispatcher TransportDispatcher) NetworkEndpoint {
 	e := &fwdTestNetworkEndpoint{
 		nicID:      nic.ID(),
 		proto:      f,
 		dispatcher: dispatcher,
-		ep:         ep,
+		ep:         nic.LinkEndpoint(),
 	}
 	e.AddressableEndpointState.Init(e)
 	return e