Remove Qemu legacy networking support

gns3server/compute/qemu/qemu_vm.py

@@ -146,7 +146,6 @@ class QemuVM(BaseNode):
         self._initrd = ""
         self._kernel_image = ""
         self._kernel_command_line = ""
-        self._legacy_networking = False
         self._replicate_network_connection_state = True
         self._create_config_disk = False
         self._on_close = "power_off"
@@ -679,30 +678,6 @@ class QemuVM(BaseNode):
             )
         )
 
-    @property
-    def legacy_networking(self):
-        """
-        Returns either QEMU legacy networking commands are used.
-
-        :returns: boolean
-        """
-
-        return self._legacy_networking
-
-    @legacy_networking.setter
-    def legacy_networking(self, legacy_networking):
-        """
-        Sets either QEMU legacy networking commands are used.
-
-        :param legacy_networking: boolean
-        """
-
-        if legacy_networking:
-            log.info(f'QEMU VM "{self._name}" [{self._id}] has enabled legacy networking')
-        else:
-            log.info(f'QEMU VM "{self._name}" [{self._id}] has disabled legacy networking')
-        self._legacy_networking = legacy_networking
-
     @property
     def replicate_network_connection_state(self):
         """
@@ -2208,16 +2183,6 @@ class QemuVM(BaseNode):
             ["-net", "none"]
         )  # we do not want any user networking back-end if no adapter is connected.
 
-        patched_qemu = False
-        if self._legacy_networking:
-            qemu_version = await self.manager.get_qemu_version(self.qemu_path)
-            if qemu_version:
-                if parse_version(qemu_version) >= parse_version("2.9.0"):
-                    raise QemuError("Qemu version 2.9.0 and later doesn't support legacy networking mode")
-                if parse_version(qemu_version) < parse_version("1.1.0"):
-                    # this is a patched Qemu if version is below 1.1.0
-                    patched_qemu = True
-
         # Each 32 PCI device we need to add a PCI bridge with max 9 bridges
         pci_devices = 4 + len(self._ethernet_adapters)  # 4 PCI devices are use by default by qemu
         pci_bridges = math.floor(pci_devices / 32)
@@ -2244,38 +2209,6 @@ class QemuVM(BaseNode):
             if custom_mac_address:
                 mac = int_to_macaddress(macaddress_to_int(custom_mac_address))
 
-            if self._legacy_networking:
-                # legacy QEMU networking syntax (-net)
-                if nio:
-                    network_options.extend(["-net", f"nic,vlan={adapter_number},macaddr={mac},model={adapter_type}"])
-                    if isinstance(nio, NIOUDP):
-                        if patched_qemu:
-                            # use patched Qemu syntax
-                            network_options.extend(
-                                [
-                                    "-net",
-                                    "udp,vlan={},name=gns3-{},sport={},dport={},daddr={}".format(
-                                        adapter_number, adapter_number, nio.lport, nio.rport, nio.rhost
-                                    ),
-                                ]
-                            )
-                        else:
-                            # use UDP tunnel support added in Qemu 1.1.0
-                            network_options.extend(
-                                [
-                                    "-net",
-                                    "socket,vlan={},name=gns3-{},udp={}:{},localaddr={}:{}".format(
-                                        adapter_number, adapter_number, nio.rhost, nio.rport, "127.0.0.1", nio.lport
-                                    ),
-                                ]
-                            )
-                    elif isinstance(nio, NIOTAP):
-                        network_options.extend(["-net", f"tap,name=gns3-{adapter_number},ifname={nio.tap_device}"])
-                else:
-                    network_options.extend(["-net", f"nic,vlan={adapter_number},macaddr={mac},model={adapter_type}"])
-
-            else:
-                # newer QEMU networking syntax
             device_string = f"{adapter_type},mac={mac}"
             bridge_id = math.floor(pci_device_id / 32)
             if bridge_id > 0:

gns3server/db/models/templates.py

@@ -201,7 +201,6 @@ class QemuTemplate(Template):
     kernel_image = Column(String)
     bios_image = Column(String)
     kernel_command_line = Column(String)
-    legacy_networking = Column(Boolean)
     replicate_network_connection_state = Column(Boolean)
     create_config_disk = Column(Boolean)
     on_close = Column(String)

gns3server/schemas/compute/qemu_nodes.py

@@ -195,7 +195,6 @@ class QemuBase(BaseModel):
     mac_address: Optional[str] = Field(
         None, description="QEMU MAC address", regex="^([0-9a-fA-F]{2}[:]){5}([0-9a-fA-F]{2})$"
     )
-    legacy_networking: Optional[bool] = Field(None, description="Use QEMU legagy networking commands (-net syntax)")
     replicate_network_connection_state: Optional[bool] = Field(
         None, description="Replicate the network connection state for links in Qemu"
     )

gns3server/schemas/controller/templates/qemu_templates.py

@@ -74,7 +74,6 @@ class QemuTemplate(TemplateBase):
     kernel_image: Optional[str] = Field("", description="QEMU kernel image path")
     bios_image: Optional[str] = Field("", description="QEMU bios image path")
     kernel_command_line: Optional[str] = Field("", description="QEMU kernel command line")
-    legacy_networking: Optional[bool] = Field(False, description="Use QEMU legagy networking commands (-net syntax)")
     replicate_network_connection_state: Optional[bool] = Field(
         True, description="Replicate the network connection state for links in Qemu"
     )

tests/api/routes/controller/test_templates.py

@@ -729,7 +729,6 @@ class TestQemuTemplate:
                                  "initrd": "",
                                  "kernel_command_line": "",
                                  "kernel_image": "",
-                                 "legacy_networking": False,
                                  "linked_clone": True,
                                  "mac_address": "",
                                  "name": "Qemu template",