feat: add promiscuous mode and spoofing config

app/tun/config.pb.go

@@ -28,12 +28,14 @@ type Config struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Name           string                    `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
-	Mtu            uint32                    `protobuf:"varint,2,opt,name=mtu,proto3" json:"mtu,omitempty"`
-	UserLevel      uint32                    `protobuf:"varint,3,opt,name=user_level,json=userLevel,proto3" json:"user_level,omitempty"`
-	PacketEncoding packetaddr.PacketAddrType `protobuf:"varint,4,opt,name=packet_encoding,json=packetEncoding,proto3,enum=v2ray.core.net.packetaddr.PacketAddrType" json:"packet_encoding,omitempty"`
-	Tag            string                    `protobuf:"bytes,6,opt,name=tag,proto3" json:"tag,omitempty"`
-	Ips            []*routercommon.CIDR      `protobuf:"bytes,7,rep,name=ips,proto3" json:"ips,omitempty"`
+	Name                  string                    `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	Mtu                   uint32                    `protobuf:"varint,2,opt,name=mtu,proto3" json:"mtu,omitempty"`
+	UserLevel             uint32                    `protobuf:"varint,3,opt,name=user_level,json=userLevel,proto3" json:"user_level,omitempty"`
+	PacketEncoding        packetaddr.PacketAddrType `protobuf:"varint,4,opt,name=packet_encoding,json=packetEncoding,proto3,enum=v2ray.core.net.packetaddr.PacketAddrType" json:"packet_encoding,omitempty"`
+	Tag                   string                    `protobuf:"bytes,6,opt,name=tag,proto3" json:"tag,omitempty"`
+	Ips                   []*routercommon.CIDR      `protobuf:"bytes,7,rep,name=ips,proto3" json:"ips,omitempty"`
+	EnablePromiscuousMode bool                      `protobuf:"varint,8,opt,name=enable_promiscuous_mode,json=enablePromiscuousMode,proto3" json:"enable_promiscuous_mode,omitempty"`
+	EnableSpoofing        bool                      `protobuf:"varint,9,opt,name=enable_spoofing,json=enableSpoofing,proto3" json:"enable_spoofing,omitempty"`
 }
 
 func (x *Config) Reset() {
@@ -110,6 +112,20 @@ func (x *Config) GetIps() []*routercommon.CIDR {
 	return nil
 }
 
+func (x *Config) GetEnablePromiscuousMode() bool {
+	if x != nil {
+		return x.EnablePromiscuousMode
+	}
+	return false
+}
+
+func (x *Config) GetEnableSpoofing() bool {
+	if x != nil {
+		return x.EnableSpoofing
+	}
+	return false
+}
+
 var File_app_tun_config_proto protoreflect.FileDescriptor
 
 var file_app_tun_config_proto_rawDesc = []byte{
@@ -122,7 +138,7 @@ var file_app_tun_config_proto_rawDesc = []byte{
 	0x6b, 0x65, 0x74, 0x61, 0x64, 0x64, 0x72, 0x2f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2e, 0x70,
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-	0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x83, 0x02, 0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69,
+	0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xe4, 0x02, 0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69,
 	0x67, 0x12, 0x12, 0x0a, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52,
 	0x04, 0x6e, 0x61, 0x6d, 0x65, 0x12, 0x10, 0x0a, 0x03, 0x6d, 0x74, 0x75, 0x18, 0x02, 0x20, 0x01,
 	0x28, 0x0d, 0x52, 0x03, 0x6d, 0x74, 0x75, 0x12, 0x1d, 0x0a, 0x0a, 0x75, 0x73, 0x65, 0x72, 0x5f,
@@ -137,14 +153,20 @@ var file_app_tun_config_proto_rawDesc = []byte{
 	0x69, 0x70, 0x73, 0x18, 0x07, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x28, 0x2e, 0x76, 0x32, 0x72, 0x61,
 	0x79, 0x2e, 0x63, 0x6f, 0x72, 0x65, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65,
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-	0x49, 0x44, 0x52, 0x52, 0x03, 0x69, 0x70, 0x73, 0x3a, 0x12, 0x82, 0xb5, 0x18, 0x0e, 0x0a, 0x07,
-	0x73, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x12, 0x03, 0x74, 0x75, 0x6e, 0x42, 0x57, 0x0a, 0x16,
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-	0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x76, 0x35, 0x2f, 0x61, 0x70, 0x70, 0x2f, 0x74, 0x75, 0x6e,
-	0xaa, 0x02, 0x12, 0x56, 0x32, 0x52, 0x61, 0x79, 0x2e, 0x43, 0x6f, 0x72, 0x65, 0x2e, 0x41, 0x70,
-	0x70, 0x2e, 0x54, 0x75, 0x6e, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x49, 0x44, 0x52, 0x52, 0x03, 0x69, 0x70, 0x73, 0x12, 0x36, 0x0a, 0x17, 0x65, 0x6e, 0x61, 0x62,
+	0x6c, 0x65, 0x5f, 0x70, 0x72, 0x6f, 0x6d, 0x69, 0x73, 0x63, 0x75, 0x6f, 0x75, 0x73, 0x5f, 0x6d,
+	0x6f, 0x64, 0x65, 0x18, 0x08, 0x20, 0x01, 0x28, 0x08, 0x52, 0x15, 0x65, 0x6e, 0x61, 0x62, 0x6c,
+	0x65, 0x50, 0x72, 0x6f, 0x6d, 0x69, 0x73, 0x63, 0x75, 0x6f, 0x75, 0x73, 0x4d, 0x6f, 0x64, 0x65,
+	0x12, 0x27, 0x0a, 0x0f, 0x65, 0x6e, 0x61, 0x62, 0x6c, 0x65, 0x5f, 0x73, 0x70, 0x6f, 0x6f, 0x66,
+	0x69, 0x6e, 0x67, 0x18, 0x09, 0x20, 0x01, 0x28, 0x08, 0x52, 0x0e, 0x65, 0x6e, 0x61, 0x62, 0x6c,
+	0x65, 0x53, 0x70, 0x6f, 0x6f, 0x66, 0x69, 0x6e, 0x67, 0x3a, 0x12, 0x82, 0xb5, 0x18, 0x0e, 0x0a,
+	0x07, 0x73, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x12, 0x03, 0x74, 0x75, 0x6e, 0x42, 0x57, 0x0a,
+	0x16, 0x63, 0x6f, 0x6d, 0x2e, 0x76, 0x32, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x72, 0x65, 0x2e,
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+	0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x76, 0x32, 0x66, 0x6c, 0x79, 0x2f, 0x76, 0x32, 0x72, 0x61,
+	0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x76, 0x35, 0x2f, 0x61, 0x70, 0x70, 0x2f, 0x74, 0x75,
+	0x6e, 0xaa, 0x02, 0x12, 0x56, 0x32, 0x52, 0x61, 0x79, 0x2e, 0x43, 0x6f, 0x72, 0x65, 0x2e, 0x41,
+	0x70, 0x70, 0x2e, 0x54, 0x75, 0x6e, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (

app/tun/config.proto

@@ -22,4 +22,6 @@ message Config {
     v2ray.core.net.packetaddr.PacketAddrType packet_encoding = 4;
     string tag = 6;
     repeated v2ray.core.app.router.routercommon.CIDR ips = 7;
+    bool enable_promiscuous_mode = 8;
+    bool enable_spoofing = 9;
 }

app/tun/nic.go

@@ -8,9 +8,9 @@ import (
 	"gvisor.dev/gvisor/pkg/tcpip/stack"
 )
 
-func CreateNIC(nicID tcpip.NICID, linkEndpoint stack.LinkEndpoint) StackOption {
+func CreateNIC(id tcpip.NICID, linkEndpoint stack.LinkEndpoint) StackOption {
 	return func(s *stack.Stack) error {
-		if err := s.CreateNICWithOptions(nicID, linkEndpoint,
+		if err := s.CreateNICWithOptions(id, linkEndpoint,
 			stack.NICOptions{
 				Disabled: false,
 				QDisc:    nil,
@@ -21,6 +21,24 @@ func CreateNIC(nicID tcpip.NICID, linkEndpoint stack.LinkEndpoint) StackOption {
 	}
 }
 
+func SetPromiscuousMode(id tcpip.NICID, enable bool) StackOption {
+	return func(s *stack.Stack) error {
+		if err := s.SetPromiscuousMode(id, enable); err != nil {
+			return newError("failed to set promiscuous mode:", err)
+		}
+		return nil
+	}
+}
+
+func SetSpoofing(id tcpip.NICID, enable bool) StackOption {
+	return func(s *stack.Stack) error {
+		if err := s.SetSpoofing(id, enable); err != nil {
+			return newError("failed to set spoofing:", err)
+		}
+		return nil
+	}
+}
+
 func AddProtocolAddress(id tcpip.NICID, ips []*routercommon.CIDR) StackOption {
 	return func(s *stack.Stack) error {
 		for _, ip := range ips {

app/tun/stack.go

@@ -34,6 +34,8 @@ func (t *TUN) CreateStack(linkedEndpoint stack.LinkEndpoint) (*stack.Stack, erro
 
 		CreateNIC(nicID, linkedEndpoint),
 		AddProtocolAddress(nicID, t.config.Ips),
+		SetPromiscuousMode(nicID, t.config.EnablePromiscuousMode),
+		SetSpoofing(nicID, t.config.EnableSpoofing),
 	}
 
 	for _, opt := range opts {