feat: set route config

app/tun/config.pb.go

@@ -32,8 +32,9 @@ type Config struct {
 	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"`
+	Tag                   string                    `protobuf:"bytes,5,opt,name=tag,proto3" json:"tag,omitempty"`
+	Ips                   []*routercommon.CIDR      `protobuf:"bytes,6,rep,name=ips,proto3" json:"ips,omitempty"`
+	Routes                []*routercommon.CIDR      `protobuf:"bytes,7,rep,name=routes,proto3" json:"routes,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"`
 }
@@ -112,6 +113,13 @@ func (x *Config) GetIps() []*routercommon.CIDR {
 	return nil
 }
 
+func (x *Config) GetRoutes() []*routercommon.CIDR {
+	if x != nil {
+		return x.Routes
+	}
+	return nil
+}
+
 func (x *Config) GetEnablePromiscuousMode() bool {
 	if x != nil {
 		return x.EnablePromiscuousMode
@@ -138,7 +146,7 @@ var file_app_tun_config_proto_rawDesc = []byte{
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@@ -149,24 +157,28 @@ var file_app_tun_config_proto_rawDesc = []byte{
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 }
 
 var (
@@ -190,11 +202,12 @@ var file_app_tun_config_proto_goTypes = []interface{}{
 var file_app_tun_config_proto_depIdxs = []int32{
 	1, // 0: v2ray.core.app.tun.Config.packet_encoding:type_name -> v2ray.core.net.packetaddr.PacketAddrType
 	2, // 1: v2ray.core.app.tun.Config.ips:type_name -> v2ray.core.app.router.routercommon.CIDR
-	2, // [2:2] is the sub-list for method output_type
-	2, // [2:2] is the sub-list for method input_type
-	2, // [2:2] is the sub-list for extension type_name
-	2, // [2:2] is the sub-list for extension extendee
-	0, // [0:2] is the sub-list for field type_name
+	2, // 2: v2ray.core.app.tun.Config.routes:type_name -> v2ray.core.app.router.routercommon.CIDR
+	3, // [3:3] is the sub-list for method output_type
+	3, // [3:3] is the sub-list for method input_type
+	3, // [3:3] is the sub-list for extension type_name
+	3, // [3:3] is the sub-list for extension extendee
+	0, // [0:3] is the sub-list for field type_name
 }
 
 func init() { file_app_tun_config_proto_init() }

app/tun/config.proto

@@ -20,8 +20,9 @@ message Config {
     uint32 mtu = 2;
     uint32 user_level = 3;
     v2ray.core.net.packetaddr.PacketAddrType packet_encoding = 4;
-    string tag = 6;
-    repeated v2ray.core.app.router.routercommon.CIDR ips = 7;
+    string tag = 5;
+    repeated v2ray.core.app.router.routercommon.CIDR ips = 6;
+    repeated v2ray.core.app.router.routercommon.CIDR routes = 7;
     bool enable_promiscuous_mode = 8;
     bool enable_spoofing = 9;
 }

app/tun/nic.go

@@ -67,3 +67,24 @@ func AddProtocolAddress(id tcpip.NICID, ips []*routercommon.CIDR) StackOption {
 		return nil
 	}
 }
+
+func SetRouteTable(id tcpip.NICID, routes []*routercommon.CIDR) StackOption {
+	return func(s *stack.Stack) error {
+		s.SetRouteTable(func() (table []tcpip.Route) {
+			for _, cidrs := range routes {
+				subnet := tcpip.AddressWithPrefix{
+					Address:   tcpip.AddrFrom4Slice(cidrs.Ip),
+					PrefixLen: int(cidrs.Prefix),
+				}.Subnet()
+				route := tcpip.Route{
+					Destination: subnet,
+					NIC:         id,
+				}
+				table = append(table, route)
+			}
+			return
+		}())
+
+		return nil
+	}
+}

app/tun/stack.go

@@ -34,6 +34,7 @@ func (t *TUN) CreateStack(linkedEndpoint stack.LinkEndpoint) (*stack.Stack, erro
 
 		CreateNIC(nicID, linkedEndpoint),
 		AddProtocolAddress(nicID, t.config.Ips),
+		SetRouteTable(nicID, t.config.Routes),
 		SetPromiscuousMode(nicID, t.config.EnablePromiscuousMode),
 		SetSpoofing(nicID, t.config.EnableSpoofing),
 	}