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-rw-r--r--pkg/tcpip/network/arp/arp.go4
-rw-r--r--pkg/tcpip/network/ipv4/ipv4.go8
-rw-r--r--pkg/tcpip/network/ipv6/ipv6.go8
-rw-r--r--pkg/tcpip/stack/forwarder_test.go10
-rw-r--r--pkg/tcpip/stack/nic_test.go4
-rw-r--r--pkg/tcpip/stack/registration.go4
-rw-r--r--pkg/tcpip/stack/stack.go4
-rw-r--r--pkg/tcpip/stack/stack_test.go68
-rw-r--r--pkg/tcpip/tcpip.go16
9 files changed, 54 insertions, 72 deletions
diff --git a/pkg/tcpip/network/arp/arp.go b/pkg/tcpip/network/arp/arp.go
index cbbe5b77f..7aaee08c4 100644
--- a/pkg/tcpip/network/arp/arp.go
+++ b/pkg/tcpip/network/arp/arp.go
@@ -217,12 +217,12 @@ func (*protocol) ResolveStaticAddress(addr tcpip.Address) (tcpip.LinkAddress, bo
}
// SetOption implements stack.NetworkProtocol.SetOption.
-func (*protocol) SetOption(option interface{}) *tcpip.Error {
+func (*protocol) SetOption(tcpip.SettableNetworkProtocolOption) *tcpip.Error {
return tcpip.ErrUnknownProtocolOption
}
// Option implements stack.NetworkProtocol.Option.
-func (*protocol) Option(option interface{}) *tcpip.Error {
+func (*protocol) Option(tcpip.GettableNetworkProtocolOption) *tcpip.Error {
return tcpip.ErrUnknownProtocolOption
}
diff --git a/pkg/tcpip/network/ipv4/ipv4.go b/pkg/tcpip/network/ipv4/ipv4.go
index 55ca94268..fa4ae2012 100644
--- a/pkg/tcpip/network/ipv4/ipv4.go
+++ b/pkg/tcpip/network/ipv4/ipv4.go
@@ -486,10 +486,10 @@ func (*protocol) ParseAddresses(v buffer.View) (src, dst tcpip.Address) {
}
// SetOption implements NetworkProtocol.SetOption.
-func (p *protocol) SetOption(option interface{}) *tcpip.Error {
+func (p *protocol) SetOption(option tcpip.SettableNetworkProtocolOption) *tcpip.Error {
switch v := option.(type) {
- case tcpip.DefaultTTLOption:
- p.SetDefaultTTL(uint8(v))
+ case *tcpip.DefaultTTLOption:
+ p.SetDefaultTTL(uint8(*v))
return nil
default:
return tcpip.ErrUnknownProtocolOption
@@ -497,7 +497,7 @@ func (p *protocol) SetOption(option interface{}) *tcpip.Error {
}
// Option implements NetworkProtocol.Option.
-func (p *protocol) Option(option interface{}) *tcpip.Error {
+func (p *protocol) Option(option tcpip.GettableNetworkProtocolOption) *tcpip.Error {
switch v := option.(type) {
case *tcpip.DefaultTTLOption:
*v = tcpip.DefaultTTLOption(p.DefaultTTL())
diff --git a/pkg/tcpip/network/ipv6/ipv6.go b/pkg/tcpip/network/ipv6/ipv6.go
index 36fbbebf0..af3cd91c6 100644
--- a/pkg/tcpip/network/ipv6/ipv6.go
+++ b/pkg/tcpip/network/ipv6/ipv6.go
@@ -469,10 +469,10 @@ func (p *protocol) NewEndpoint(nicID tcpip.NICID, linkAddrCache stack.LinkAddres
}
// SetOption implements NetworkProtocol.SetOption.
-func (p *protocol) SetOption(option interface{}) *tcpip.Error {
+func (p *protocol) SetOption(option tcpip.SettableNetworkProtocolOption) *tcpip.Error {
switch v := option.(type) {
- case tcpip.DefaultTTLOption:
- p.SetDefaultTTL(uint8(v))
+ case *tcpip.DefaultTTLOption:
+ p.SetDefaultTTL(uint8(*v))
return nil
default:
return tcpip.ErrUnknownProtocolOption
@@ -480,7 +480,7 @@ func (p *protocol) SetOption(option interface{}) *tcpip.Error {
}
// Option implements NetworkProtocol.Option.
-func (p *protocol) Option(option interface{}) *tcpip.Error {
+func (p *protocol) Option(option tcpip.GettableNetworkProtocolOption) *tcpip.Error {
switch v := option.(type) {
case *tcpip.DefaultTTLOption:
*v = tcpip.DefaultTTLOption(p.DefaultTTL())
diff --git a/pkg/tcpip/stack/forwarder_test.go b/pkg/tcpip/stack/forwarder_test.go
index 91165ebc7..54759091a 100644
--- a/pkg/tcpip/stack/forwarder_test.go
+++ b/pkg/tcpip/stack/forwarder_test.go
@@ -154,17 +154,17 @@ func (f *fwdTestNetworkProtocol) NewEndpoint(nicID tcpip.NICID, _ LinkAddressCac
}
}
-func (f *fwdTestNetworkProtocol) SetOption(option interface{}) *tcpip.Error {
+func (*fwdTestNetworkProtocol) SetOption(tcpip.SettableNetworkProtocolOption) *tcpip.Error {
return tcpip.ErrUnknownProtocolOption
}
-func (f *fwdTestNetworkProtocol) Option(option interface{}) *tcpip.Error {
+func (*fwdTestNetworkProtocol) Option(tcpip.GettableNetworkProtocolOption) *tcpip.Error {
return tcpip.ErrUnknownProtocolOption
}
-func (f *fwdTestNetworkProtocol) Close() {}
+func (*fwdTestNetworkProtocol) Close() {}
-func (f *fwdTestNetworkProtocol) Wait() {}
+func (*fwdTestNetworkProtocol) Wait() {}
func (f *fwdTestNetworkProtocol) LinkAddressRequest(addr, localAddr tcpip.Address, remoteLinkAddr tcpip.LinkAddress, linkEP LinkEndpoint) *tcpip.Error {
if f.onLinkAddressResolved != nil {
@@ -182,7 +182,7 @@ func (f *fwdTestNetworkProtocol) ResolveStaticAddress(addr tcpip.Address) (tcpip
return "", false
}
-func (f *fwdTestNetworkProtocol) LinkAddressProtocol() tcpip.NetworkProtocolNumber {
+func (*fwdTestNetworkProtocol) LinkAddressProtocol() tcpip.NetworkProtocolNumber {
return fwdTestNetNumber
}
diff --git a/pkg/tcpip/stack/nic_test.go b/pkg/tcpip/stack/nic_test.go
index 1e065b5c1..dd6474297 100644
--- a/pkg/tcpip/stack/nic_test.go
+++ b/pkg/tcpip/stack/nic_test.go
@@ -201,12 +201,12 @@ func (p *testIPv6Protocol) NewEndpoint(nicID tcpip.NICID, _ LinkAddressCache, _
}
// SetOption implements NetworkProtocol.SetOption.
-func (*testIPv6Protocol) SetOption(interface{}) *tcpip.Error {
+func (*testIPv6Protocol) SetOption(tcpip.SettableNetworkProtocolOption) *tcpip.Error {
return nil
}
// Option implements NetworkProtocol.Option.
-func (*testIPv6Protocol) Option(interface{}) *tcpip.Error {
+func (*testIPv6Protocol) Option(tcpip.GettableNetworkProtocolOption) *tcpip.Error {
return nil
}
diff --git a/pkg/tcpip/stack/registration.go b/pkg/tcpip/stack/registration.go
index 21ac38583..2d88fa1f7 100644
--- a/pkg/tcpip/stack/registration.go
+++ b/pkg/tcpip/stack/registration.go
@@ -303,12 +303,12 @@ type NetworkProtocol interface {
// SetOption allows enabling/disabling protocol specific features.
// SetOption returns an error if the option is not supported or the
// provided option value is invalid.
- SetOption(option interface{}) *tcpip.Error
+ SetOption(option tcpip.SettableNetworkProtocolOption) *tcpip.Error
// Option allows retrieving protocol specific option values.
// Option returns an error if the option is not supported or the
// provided option value is invalid.
- Option(option interface{}) *tcpip.Error
+ Option(option tcpip.GettableNetworkProtocolOption) *tcpip.Error
// Close requests that any worker goroutines owned by the protocol
// stop.
diff --git a/pkg/tcpip/stack/stack.go b/pkg/tcpip/stack/stack.go
index 7f5ed9e83..c86ee1c13 100644
--- a/pkg/tcpip/stack/stack.go
+++ b/pkg/tcpip/stack/stack.go
@@ -785,7 +785,7 @@ func (s *Stack) UniqueID() uint64 {
// options. This method returns an error if the protocol is not supported or
// option is not supported by the protocol implementation or the provided value
// is incorrect.
-func (s *Stack) SetNetworkProtocolOption(network tcpip.NetworkProtocolNumber, option interface{}) *tcpip.Error {
+func (s *Stack) SetNetworkProtocolOption(network tcpip.NetworkProtocolNumber, option tcpip.SettableNetworkProtocolOption) *tcpip.Error {
netProto, ok := s.networkProtocols[network]
if !ok {
return tcpip.ErrUnknownProtocol
@@ -802,7 +802,7 @@ func (s *Stack) SetNetworkProtocolOption(network tcpip.NetworkProtocolNumber, op
// if err != nil {
// ...
// }
-func (s *Stack) NetworkProtocolOption(network tcpip.NetworkProtocolNumber, option interface{}) *tcpip.Error {
+func (s *Stack) NetworkProtocolOption(network tcpip.NetworkProtocolNumber, option tcpip.GettableNetworkProtocolOption) *tcpip.Error {
netProto, ok := s.networkProtocols[network]
if !ok {
return tcpip.ErrUnknownProtocol
diff --git a/pkg/tcpip/stack/stack_test.go b/pkg/tcpip/stack/stack_test.go
index 1deeccb89..60b54c244 100644
--- a/pkg/tcpip/stack/stack_test.go
+++ b/pkg/tcpip/stack/stack_test.go
@@ -158,23 +158,13 @@ func (*fakeNetworkEndpoint) WriteHeaderIncludedPacket(r *stack.Route, pkt *stack
func (*fakeNetworkEndpoint) Close() {}
-type fakeNetGoodOption bool
-
-type fakeNetBadOption bool
-
-type fakeNetInvalidValueOption int
-
-type fakeNetOptions struct {
- good bool
-}
-
// fakeNetworkProtocol is a network-layer protocol descriptor. It aggregates the
// number of packets sent and received via endpoints of this protocol. The index
// where packets are added is given by the packet's destination address MOD 10.
type fakeNetworkProtocol struct {
packetCount [10]int
sendPacketCount [10]int
- opts fakeNetOptions
+ defaultTTL uint8
}
func (f *fakeNetworkProtocol) Number() tcpip.NetworkProtocolNumber {
@@ -206,22 +196,20 @@ func (f *fakeNetworkProtocol) NewEndpoint(nicID tcpip.NICID, _ stack.LinkAddress
}
}
-func (f *fakeNetworkProtocol) SetOption(option interface{}) *tcpip.Error {
+func (f *fakeNetworkProtocol) SetOption(option tcpip.SettableNetworkProtocolOption) *tcpip.Error {
switch v := option.(type) {
- case fakeNetGoodOption:
- f.opts.good = bool(v)
+ case *tcpip.DefaultTTLOption:
+ f.defaultTTL = uint8(*v)
return nil
- case fakeNetInvalidValueOption:
- return tcpip.ErrInvalidOptionValue
default:
return tcpip.ErrUnknownProtocolOption
}
}
-func (f *fakeNetworkProtocol) Option(option interface{}) *tcpip.Error {
+func (f *fakeNetworkProtocol) Option(option tcpip.GettableNetworkProtocolOption) *tcpip.Error {
switch v := option.(type) {
- case *fakeNetGoodOption:
- *v = fakeNetGoodOption(f.opts.good)
+ case *tcpip.DefaultTTLOption:
+ *v = tcpip.DefaultTTLOption(f.defaultTTL)
return nil
default:
return tcpip.ErrUnknownProtocolOption
@@ -1640,46 +1628,24 @@ func TestMulticastOrIPv6LinkLocalNeedsNoRoute(t *testing.T) {
}
}
-func TestNetworkOptions(t *testing.T) {
+func TestNetworkOption(t *testing.T) {
s := stack.New(stack.Options{
NetworkProtocols: []stack.NetworkProtocol{fakeNetFactory()},
TransportProtocols: []stack.TransportProtocol{},
})
- // Try an unsupported network protocol.
- if err := s.SetNetworkProtocolOption(tcpip.NetworkProtocolNumber(99999), fakeNetGoodOption(false)); err != tcpip.ErrUnknownProtocol {
- t.Fatalf("SetNetworkProtocolOption(fakeNet2, blah, false) = %v, want = tcpip.ErrUnknownProtocol", err)
+ opt := tcpip.DefaultTTLOption(5)
+ if err := s.SetNetworkProtocolOption(fakeNetNumber, &opt); err != nil {
+ t.Fatalf("s.SetNetworkProtocolOption(%d, &%T(%d)): %s", fakeNetNumber, opt, opt, err)
}
- testCases := []struct {
- option interface{}
- wantErr *tcpip.Error
- verifier func(t *testing.T, p stack.NetworkProtocol)
- }{
- {fakeNetGoodOption(true), nil, func(t *testing.T, p stack.NetworkProtocol) {
- t.Helper()
- fakeNet := p.(*fakeNetworkProtocol)
- if fakeNet.opts.good != true {
- t.Fatalf("fakeNet.opts.good = false, want = true")
- }
- var v fakeNetGoodOption
- if err := s.NetworkProtocolOption(fakeNetNumber, &v); err != nil {
- t.Fatalf("s.NetworkProtocolOption(fakeNetNumber, &v) = %v, want = nil, where v is option %T", v, err)
- }
- if v != true {
- t.Fatalf("s.NetworkProtocolOption(fakeNetNumber, &v) returned v = %v, want = true", v)
- }
- }},
- {fakeNetBadOption(true), tcpip.ErrUnknownProtocolOption, nil},
- {fakeNetInvalidValueOption(1), tcpip.ErrInvalidOptionValue, nil},
+ var optGot tcpip.DefaultTTLOption
+ if err := s.NetworkProtocolOption(fakeNetNumber, &optGot); err != nil {
+ t.Fatalf("s.NetworkProtocolOption(%d, &%T): %s", fakeNetNumber, optGot, err)
}
- for _, tc := range testCases {
- if got := s.SetNetworkProtocolOption(fakeNetNumber, tc.option); got != tc.wantErr {
- t.Errorf("s.SetNetworkProtocolOption(fakeNet, %v) = %v, want = %v", tc.option, got, tc.wantErr)
- }
- if tc.verifier != nil {
- tc.verifier(t, s.NetworkProtocolInstance(fakeNetNumber))
- }
+
+ if opt != optGot {
+ t.Errorf("got optGot = %d, want = %d", optGot, opt)
}
}
diff --git a/pkg/tcpip/tcpip.go b/pkg/tcpip/tcpip.go
index cd72d4f02..47a8d7c86 100644
--- a/pkg/tcpip/tcpip.go
+++ b/pkg/tcpip/tcpip.go
@@ -841,10 +841,26 @@ const (
PMTUDiscoveryProbe
)
+// GettableNetworkProtocolOption is a marker interface for network protocol
+// options that may be queried.
+type GettableNetworkProtocolOption interface {
+ isGettableNetworkProtocolOption()
+}
+
+// SettableNetworkProtocolOption is a marker interface for network protocol
+// options that may be set.
+type SettableNetworkProtocolOption interface {
+ isSettableNetworkProtocolOption()
+}
+
// DefaultTTLOption is used by stack.(*Stack).NetworkProtocolOption to specify
// a default TTL.
type DefaultTTLOption uint8
+func (*DefaultTTLOption) isGettableNetworkProtocolOption() {}
+
+func (*DefaultTTLOption) isSettableNetworkProtocolOption() {}
+
// AvailableCongestionControlOption is used to query the supported congestion
// control algorithms.
type AvailableCongestionControlOption string
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 23:11:14 +0000