Properly build-tag the Linux kube-proxy backend code

This had to be able to build on OS X before to make verify-typecheck
pass, but now that that's fixed we can tag the code properly as being
linux-only.

cmd/kube-proxy/app/init_linux.go

@@ -1,5 +1,5 @@
-//go:build !windows
+//go:build linux
-// +build !windows
+// +build linux
 
 /*
 Copyright 2018 The Kubernetes Authors.

cmd/kube-proxy/app/server_linux.go

@@ -1,5 +1,5 @@
-//go:build !windows
+//go:build linux
-// +build !windows
+// +build linux
 
 /*
 Copyright 2014 The Kubernetes Authors.

cmd/kube-proxy/app/server_linux_test.go

@@ -1,5 +1,5 @@
-//go:build !windows
+//go:build linux
-// +build !windows
+// +build linux
 
 /*
 Copyright 2018 The Kubernetes Authors.

pkg/proxy/conntrack/cleanup.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2023 The Kubernetes Authors.
 

pkg/proxy/conntrack/conntrack.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2016 The Kubernetes Authors.
 

pkg/proxy/conntrack/conntrack_test.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2015 The Kubernetes Authors.
 

pkg/proxy/iptables/number_generated_rules_test.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2022 The Kubernetes Authors.
 

pkg/proxy/iptables/proxier.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2015 The Kubernetes Authors.
 

pkg/proxy/iptables/proxier_test.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2015 The Kubernetes Authors.
 

pkg/proxy/ipvs/graceful_termination.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2015 The Kubernetes Authors.
 

pkg/proxy/ipvs/graceful_termination_test.go

@@ -1,5 +1,5 @@
-//go:build !windows
+//go:build linux
-// +build !windows
+// +build linux
 
 /*
 Copyright 2019 The Kubernetes Authors.

pkg/proxy/ipvs/ipset.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2017 The Kubernetes Authors.
 

pkg/proxy/ipvs/ipset/ipset.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2017 The Kubernetes Authors.
 

pkg/proxy/ipvs/ipset/ipset_test.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2017 The Kubernetes Authors.
 

pkg/proxy/ipvs/ipset/testing/fake.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2017 The Kubernetes Authors.
 

pkg/proxy/ipvs/ipset/testing/fake_test.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2017 The Kubernetes Authors.
 

pkg/proxy/ipvs/ipset/types.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2017 The Kubernetes Authors.
 

pkg/proxy/ipvs/ipset_test.go

@@ -1,5 +1,5 @@
-//go:build !windows
+//go:build linux
-// +build !windows
+// +build linux
 
 /*
 Copyright 2017 The Kubernetes Authors.

pkg/proxy/ipvs/netlink_unsupported.go

@@ -1,82 +0,0 @@
-//go:build !linux
-// +build !linux
-
-/*
-Copyright 2017 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package ipvs
-
-import (
-	"fmt"
-	"net"
-
-	"k8s.io/apimachinery/pkg/util/sets"
-)
-
-// The type must match the one in proxier_test.go
-type netlinkHandle struct {
-	isIPv6 bool
-}
-
-// NewNetLinkHandle will create an EmptyHandle
-func NewNetLinkHandle(ipv6 bool) NetLinkHandle {
-	return &netlinkHandle{}
-}
-
-// EnsureAddressBind checks if address is bound to the interface and, if not, binds it. If the address is already bound, return true.
-func (h *netlinkHandle) EnsureAddressBind(address, devName string) (exist bool, err error) {
-	return false, fmt.Errorf("netlink not supported for this platform")
-}
-
-// UnbindAddress unbind address from the interface
-func (h *netlinkHandle) UnbindAddress(address, devName string) error {
-	return fmt.Errorf("netlink not supported for this platform")
-}
-
-// EnsureDummyDevice is part of interface
-func (h *netlinkHandle) EnsureDummyDevice(devName string) (bool, error) {
-	return false, fmt.Errorf("netlink is not supported in this platform")
-}
-
-// DeleteDummyDevice is part of interface.
-func (h *netlinkHandle) DeleteDummyDevice(devName string) error {
-	return fmt.Errorf("netlink is not supported in this platform")
-}
-
-// ListBindAddress is part of interface.
-func (h *netlinkHandle) ListBindAddress(devName string) ([]string, error) {
-	return nil, fmt.Errorf("netlink is not supported in this platform")
-}
-
-// GetAllLocalAddresses is part of interface.
-func (h *netlinkHandle) GetAllLocalAddresses() (sets.Set[string], error) {
-	return nil, fmt.Errorf("netlink is not supported in this platform")
-}
-
-// GetLocalAddresses is part of interface.
-func (h *netlinkHandle) GetLocalAddresses(dev string) (sets.Set[string], error) {
-	return nil, fmt.Errorf("netlink is not supported in this platform")
-}
-
-// GetAllLocalAddressesExcept is part of interface.
-func (h *netlinkHandle) GetAllLocalAddressesExcept(dev string) (sets.Set[string], error) {
-	return nil, fmt.Errorf("netlink is not supported in this platform")
-}
-
-// Must match the one in proxier_test.go
-func (h *netlinkHandle) isValidForSet(ip net.IP) bool {
-	return false
-}

pkg/proxy/ipvs/proxier.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2017 The Kubernetes Authors.
 

pkg/proxy/ipvs/proxier_test.go

@@ -1,5 +1,5 @@
-//go:build !windows
+//go:build linux
-// +build !windows
+// +build linux
 
 /*
 Copyright 2017 The Kubernetes Authors.

pkg/proxy/ipvs/testing/fake.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2017 The Kubernetes Authors.
 

pkg/proxy/ipvs/testing/fake_test.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2017 The Kubernetes Authors.
 

pkg/proxy/ipvs/testing/util.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2017 The Kubernetes Authors.
 

pkg/proxy/ipvs/util/ipvs.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2017 The Kubernetes Authors.
 

pkg/proxy/ipvs/util/ipvs_test.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2017 The Kubernetes Authors.
 

pkg/proxy/ipvs/util/ipvs_unsupported.go

@@ -1,79 +0,0 @@
-//go:build !linux
-// +build !linux
-
-/*
-Copyright 2017 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package ipvs
-
-import (
-	"fmt"
-	"time"
-)
-
-// New returns a dummy Interface for unsupported platform.
-func New() Interface {
-	return &runner{}
-}
-
-type runner struct {
-}
-
-func (runner *runner) Flush() error {
-	return fmt.Errorf("IPVS not supported for this platform")
-}
-
-func (runner *runner) AddVirtualServer(*VirtualServer) error {
-	return fmt.Errorf("IPVS not supported for this platform")
-}
-
-func (runner *runner) UpdateVirtualServer(*VirtualServer) error {
-	return fmt.Errorf("IPVS not supported for this platform")
-}
-
-func (runner *runner) DeleteVirtualServer(*VirtualServer) error {
-	return fmt.Errorf("IPVS not supported for this platform")
-}
-
-func (runner *runner) GetVirtualServer(*VirtualServer) (*VirtualServer, error) {
-	return nil, fmt.Errorf("IPVS not supported for this platform")
-}
-
-func (runner *runner) GetVirtualServers() ([]*VirtualServer, error) {
-	return nil, fmt.Errorf("IPVS not supported for this platform")
-}
-
-func (runner *runner) AddRealServer(*VirtualServer, *RealServer) error {
-	return fmt.Errorf("IPVS not supported for this platform")
-}
-
-func (runner *runner) GetRealServers(*VirtualServer) ([]*RealServer, error) {
-	return nil, fmt.Errorf("IPVS not supported for this platform")
-}
-
-func (runner *runner) DeleteRealServer(*VirtualServer, *RealServer) error {
-	return fmt.Errorf("IPVS not supported for this platform")
-}
-
-func (runner *runner) UpdateRealServer(*VirtualServer, *RealServer) error {
-	return fmt.Errorf("IPVS not supported for this platform")
-}
-
-func (runner *runner) ConfigureTimeouts(time.Duration, time.Duration, time.Duration) error {
-	return fmt.Errorf("IPVS not supported for this platform")
-}
-
-var _ = Interface(&runner{})

pkg/proxy/ipvs/util/testing/fake.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2017 The Kubernetes Authors.
 

pkg/proxy/ipvs/util/testing/fake_test.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2017 The Kubernetes Authors.
 

pkg/proxy/nftables/helpers_test.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2015 The Kubernetes Authors.
 

pkg/proxy/nftables/proxier.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2015 The Kubernetes Authors.
 

pkg/proxy/nftables/proxier_test.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2015 The Kubernetes Authors.
 

pkg/util/iptables/iptables.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2014 The Kubernetes Authors.
 

pkg/util/iptables/iptables_unsupported.go

@@ -1,33 +0,0 @@
-//go:build !linux
-// +build !linux
-
-/*
-Copyright 2017 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package iptables
-
-import (
-	"fmt"
-	"os"
-)
-
-func grabIptablesLocks(lock14filePath, lock16filePath string) (iptablesLocker, error) {
-	return nil, fmt.Errorf("iptables unsupported on this platform")
-}
-
-func grabIptablesFileLock(f *os.File) error {
-	return fmt.Errorf("iptables unsupported on this platform")
-}

pkg/util/iptables/save_restore.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2014 The Kubernetes Authors.
 

pkg/util/iptables/save_restore_test.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2018 The Kubernetes Authors.
 

pkg/util/iptables/testing/fake.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2015 The Kubernetes Authors.
 

pkg/util/iptables/testing/fake_test.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2022 The Kubernetes Authors.
 

pkg/util/iptables/testing/parse.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2022 The Kubernetes Authors.
 

pkg/util/iptables/testing/parse_test.go

@@ -1,3 +1,6 @@
+//go:build linux
+// +build linux
+
 /*
 Copyright 2022 The Kubernetes Authors.