daemon: initial pass to revamp how node linking and link management is done, provides a consistent way to link all wired nodes and allows them to be configured for tc for the same behavior across the board
This commit is contained in:
Blake Harnden
parent
d684b8eb5a
commit
cd7f1a641e
19 changed files with 1393 additions and 1556 deletions
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@ -13,11 +13,11 @@ import netaddr
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from core import utils
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from core.configservice.dependencies import ConfigServiceDependencies
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from core.emulator.data import InterfaceData, LinkData
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from core.emulator.enumerations import LinkTypes, MessageFlags, NodeTypes
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from core.emulator.data import InterfaceData, LinkOptions
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from core.emulator.enumerations import LinkTypes, NodeTypes
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from core.errors import CoreCommandError, CoreError
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from core.executables import BASH, MOUNT, TEST, VCMD, VNODED
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from core.nodes.interface import DEFAULT_MTU, CoreInterface, TunTap, Veth
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from core.nodes.interface import DEFAULT_MTU, CoreInterface
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from core.nodes.netclient import LinuxNetClient, get_net_client
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logger = logging.getLogger(__name__)
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@ -74,6 +74,7 @@ class NodeBase(abc.ABC):
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self.icon: Optional[str] = None
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self.position: Position = Position()
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self.up: bool = False
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self.lock: RLock = RLock()
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self.net_client: LinuxNetClient = get_net_client(
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self.session.use_ovs(), self.host_cmd
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)
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@ -96,6 +97,18 @@ class NodeBase(abc.ABC):
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"""
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raise NotImplementedError
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@abc.abstractmethod
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def adopt_iface(self, iface: CoreInterface, name: str) -> None:
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"""
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Adopt an interface, placing within network namespacing for containers
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and setting to bridge masters for network like nodes.
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:param iface: interface to adopt
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:param name: proper name to use for interface
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:return: nothing
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"""
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raise NotImplementedError
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def host_cmd(
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self,
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args: str,
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@ -139,6 +152,70 @@ class NodeBase(abc.ABC):
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"""
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return self.position.get()
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def create_iface(
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self, iface_data: InterfaceData = None, options: LinkOptions = None
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) -> CoreInterface:
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"""
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Creates an interface and adopts it to a node.
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:param iface_data: data to create interface with
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:param options: options to create interface with
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:return: created interface
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"""
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with self.lock:
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if iface_data and iface_data.id is not None:
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if iface_data.id in self.ifaces:
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raise CoreError(
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f"node({self.id}) interface({iface_data.id}) already exists"
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)
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iface_id = iface_data.id
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else:
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iface_id = self.next_iface_id()
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mtu = DEFAULT_MTU
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if iface_data and iface_data.mtu is not None:
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mtu = iface_data.mtu
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name = f"veth{self.id}.{iface_id}.{self.session.short_session_id()}"
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localname = f"{name}p"
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iface = CoreInterface(
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iface_id,
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name,
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localname,
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self.session.use_ovs(),
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mtu,
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node=self,
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server=self.server,
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)
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if iface_data:
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if iface_data.mac:
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iface.set_mac(iface_data.mac)
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for ip in iface_data.get_ips():
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iface.add_ip(ip)
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if options:
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iface.options.update(options)
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self.ifaces[iface_id] = iface
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if self.up:
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iface.startup()
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if iface_data and iface_data.name is not None:
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name = iface_data.name
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else:
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name = iface.name
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self.adopt_iface(iface, name)
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return iface
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def delete_iface(self, iface_id: int) -> CoreInterface:
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"""
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Delete an interface.
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:param iface_id: interface id to delete
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:return: the removed interface
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"""
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if iface_id not in self.ifaces:
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raise CoreError(f"node({self.name}) interface({iface_id}) does not exist")
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iface = self.ifaces.pop(iface_id)
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logger.info("node(%s) removing interface(%s)", self.name, iface.name)
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iface.shutdown()
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return iface
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def get_iface(self, iface_id: int) -> CoreInterface:
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"""
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Retrieve interface based on id.
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@ -191,15 +268,6 @@ class NodeBase(abc.ABC):
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self.iface_id += 1
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return iface_id
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def links(self, flags: MessageFlags = MessageFlags.NONE) -> List[LinkData]:
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"""
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Build link data for this node.
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:param flags: message flags
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:return: list of link data
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"""
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return []
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class CoreNodeBase(NodeBase):
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"""
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@ -227,14 +295,6 @@ class CoreNodeBase(NodeBase):
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self.directory: Optional[Path] = None
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self.tmpnodedir: bool = False
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@abc.abstractmethod
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def startup(self) -> None:
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raise NotImplementedError
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@abc.abstractmethod
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def shutdown(self) -> None:
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raise NotImplementedError
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@abc.abstractmethod
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def create_dir(self, dir_path: Path) -> None:
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"""
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@ -293,19 +353,6 @@ class CoreNodeBase(NodeBase):
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"""
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raise NotImplementedError
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@abc.abstractmethod
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def new_iface(
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self, net: "CoreNetworkBase", iface_data: InterfaceData
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) -> CoreInterface:
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"""
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Create a new interface.
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:param net: network to associate with
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:param iface_data: interface data for new interface
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:return: interface index
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"""
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raise NotImplementedError
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@abc.abstractmethod
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def path_exists(self, path: str) -> bool:
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"""
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@ -318,7 +365,7 @@ class CoreNodeBase(NodeBase):
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def host_path(self, path: Path, is_dir: bool = False) -> Path:
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"""
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Return the name of a node"s file on the host filesystem.
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Return the name of a node's file on the host filesystem.
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:param path: path to translate to host path
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:param is_dir: True if path is a directory path, False otherwise
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@ -393,54 +440,6 @@ class CoreNodeBase(NodeBase):
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if self.tmpnodedir:
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self.host_cmd(f"rm -rf {self.directory}")
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def add_iface(self, iface: CoreInterface, iface_id: int) -> None:
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"""
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Add network interface to node and set the network interface index if successful.
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:param iface: network interface to add
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:param iface_id: interface id
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:return: nothing
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"""
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if iface_id in self.ifaces:
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raise CoreError(f"interface({iface_id}) already exists")
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self.ifaces[iface_id] = iface
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iface.node_id = iface_id
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def delete_iface(self, iface_id: int) -> None:
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"""
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Delete a network interface
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:param iface_id: interface index to delete
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:return: nothing
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"""
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if iface_id not in self.ifaces:
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raise CoreError(f"node({self.name}) interface({iface_id}) does not exist")
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iface = self.ifaces.pop(iface_id)
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logger.info("node(%s) removing interface(%s)", self.name, iface.name)
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iface.detachnet()
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iface.shutdown()
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def attachnet(self, iface_id: int, net: "CoreNetworkBase") -> None:
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"""
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Attach a network.
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:param iface_id: interface of index to attach
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:param net: network to attach
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:return: nothing
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"""
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iface = self.get_iface(iface_id)
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iface.attachnet(net)
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def detachnet(self, iface_id: int) -> None:
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"""
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Detach network interface.
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:param iface_id: interface id to detach
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:return: nothing
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"""
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iface = self.get_iface(iface_id)
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iface.detachnet()
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def setposition(self, x: float = None, y: float = None, z: float = None) -> None:
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"""
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Set position.
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@ -455,25 +454,6 @@ class CoreNodeBase(NodeBase):
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for iface in self.get_ifaces():
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iface.setposition()
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def commonnets(
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self, node: "CoreNodeBase", want_ctrl: bool = False
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) -> List[Tuple["CoreNetworkBase", CoreInterface, CoreInterface]]:
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"""
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Given another node or net object, return common networks between
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this node and that object. A list of tuples is returned, with each tuple
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consisting of (network, interface1, interface2).
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:param node: node to get common network with
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:param want_ctrl: flag set to determine if control network are wanted
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:return: tuples of common networks
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"""
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common = []
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for iface1 in self.get_ifaces(control=want_ctrl):
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for iface2 in node.get_ifaces():
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if iface1.net == iface2.net:
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common.append((iface1.net, iface1, iface2))
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return common
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class CoreNode(CoreNodeBase):
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"""
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@ -504,7 +484,6 @@ class CoreNode(CoreNodeBase):
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self.directory: Optional[Path] = directory
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self.ctrlchnlname: Path = self.session.directory / self.name
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self.pid: Optional[int] = None
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self.lock: RLock = RLock()
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self._mounts: List[Tuple[Path, Path]] = []
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self.node_net_client: LinuxNetClient = self.create_node_net_client(
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self.session.use_ovs()
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@ -585,6 +564,10 @@ class CoreNode(CoreNodeBase):
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self._mounts = []
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# shutdown all interfaces
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for iface in self.get_ifaces():
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try:
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self.node_net_client.device_flush(iface.name)
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except CoreCommandError:
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pass
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iface.shutdown()
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# kill node process if present
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try:
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@ -691,150 +674,6 @@ class CoreNode(CoreNodeBase):
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self.cmd(f"{MOUNT} -n --bind {src_path} {target_path}")
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self._mounts.append((src_path, target_path))
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def next_iface_id(self) -> int:
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"""
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Retrieve a new interface index.
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:return: new interface index
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"""
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with self.lock:
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return super().next_iface_id()
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def newveth(self, iface_id: int = None, ifname: str = None, mtu: int = None) -> int:
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"""
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Create a new interface.
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:param iface_id: id for the new interface
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:param ifname: name for the new interface
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:param mtu: mtu for interface
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:return: nothing
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"""
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with self.lock:
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mtu = mtu if mtu is not None else DEFAULT_MTU
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iface_id = iface_id if iface_id is not None else self.next_iface_id()
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ifname = ifname if ifname is not None else f"eth{iface_id}"
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sessionid = self.session.short_session_id()
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try:
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suffix = f"{self.id:x}.{iface_id}.{sessionid}"
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except TypeError:
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suffix = f"{self.id}.{iface_id}.{sessionid}"
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localname = f"veth{suffix}"
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name = f"{localname}p"
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veth = Veth(self.session, name, localname, mtu, self.server, self)
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veth.adopt_node(iface_id, ifname, self.up)
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return iface_id
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def newtuntap(self, iface_id: int = None, ifname: str = None) -> int:
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"""
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Create a new tunnel tap.
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:param iface_id: interface id
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:param ifname: interface name
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:return: interface index
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"""
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with self.lock:
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iface_id = iface_id if iface_id is not None else self.next_iface_id()
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ifname = ifname if ifname is not None else f"eth{iface_id}"
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sessionid = self.session.short_session_id()
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localname = f"tap{self.id}.{iface_id}.{sessionid}"
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name = ifname
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tuntap = TunTap(self.session, name, localname, node=self)
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if self.up:
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tuntap.startup()
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try:
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self.add_iface(tuntap, iface_id)
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except CoreError as e:
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tuntap.shutdown()
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raise e
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return iface_id
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def set_mac(self, iface_id: int, mac: str) -> None:
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"""
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Set hardware address for an interface.
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:param iface_id: id of interface to set hardware address for
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:param mac: mac address to set
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:return: nothing
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:raises CoreCommandError: when a non-zero exit status occurs
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"""
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iface = self.get_iface(iface_id)
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iface.set_mac(mac)
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if self.up:
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self.node_net_client.device_mac(iface.name, str(iface.mac))
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def add_ip(self, iface_id: int, ip: str) -> None:
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"""
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Add an ip address to an interface in the format "10.0.0.1/24".
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:param iface_id: id of interface to add address to
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:param ip: address to add to interface
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:return: nothing
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:raises CoreError: when ip address provided is invalid
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:raises CoreCommandError: when a non-zero exit status occurs
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"""
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iface = self.get_iface(iface_id)
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iface.add_ip(ip)
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if self.up:
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# ipv4 check
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broadcast = None
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if netaddr.valid_ipv4(ip):
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broadcast = "+"
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self.node_net_client.create_address(iface.name, ip, broadcast)
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def remove_ip(self, iface_id: int, ip: str) -> None:
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"""
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Remove an ip address from an interface in the format "10.0.0.1/24".
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:param iface_id: id of interface to delete address from
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:param ip: ip address to remove from interface
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:return: nothing
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:raises CoreError: when ip address provided is invalid
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:raises CoreCommandError: when a non-zero exit status occurs
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"""
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iface = self.get_iface(iface_id)
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iface.remove_ip(ip)
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if self.up:
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self.node_net_client.delete_address(iface.name, ip)
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def ifup(self, iface_id: int) -> None:
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"""
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Bring an interface up.
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:param iface_id: index of interface to bring up
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:return: nothing
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"""
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if self.up:
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iface = self.get_iface(iface_id)
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self.node_net_client.device_up(iface.name)
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def new_iface(
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self, net: "CoreNetworkBase", iface_data: InterfaceData
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) -> CoreInterface:
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"""
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Create a new network interface.
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:param net: network to associate with
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:param iface_data: interface data for new interface
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:return: interface index
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"""
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with self.lock:
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if net.has_custom_iface:
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return net.custom_iface(self, iface_data)
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else:
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iface_id = iface_data.id
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if iface_id is not None and iface_id in self.ifaces:
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raise CoreError(
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f"node({self.name}) already has interface({iface_id})"
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)
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iface_id = self.newveth(iface_id, iface_data.name, iface_data.mtu)
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self.attachnet(iface_id, net)
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if iface_data.mac:
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self.set_mac(iface_id, iface_data.mac)
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for ip in iface_data.get_ips():
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self.add_ip(iface_id, ip)
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self.ifup(iface_id)
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return self.get_iface(iface_id)
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def _find_parent_path(self, path: Path) -> Optional[Path]:
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"""
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Check if there is a mounted parent directory created for this node.
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@ -910,6 +749,47 @@ class CoreNode(CoreNodeBase):
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if mode is not None:
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self.host_cmd(f"chmod {mode:o} {host_path}")
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def adopt_iface(self, iface: CoreInterface, name: str) -> None:
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"""
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Adopt interface to the network namespace of the node and setting
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the proper name provided.
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:param iface: interface to adopt
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:param name: proper name for interface
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:return: nothing
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"""
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# TODO: container, checksums off (container only?)
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# TODO: container, get flow id (container only?)
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# validate iface belongs to node and get id
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iface_id = self.get_iface_id(iface)
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if iface_id == -1:
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raise CoreError(f"adopting unknown iface({iface.name})")
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# add iface to container namespace
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self.net_client.device_ns(iface.name, str(self.pid))
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# update iface name to container name
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name = name if name else f"eth{iface_id}"
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self.node_net_client.device_name(iface.name, name)
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iface.name = name
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# turn checksums off
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self.node_net_client.checksums_off(iface.name)
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# retrieve flow id for container
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iface.flow_id = self.node_net_client.get_ifindex(iface.name)
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logger.debug("interface flow index: %s - %s", iface.name, iface.flow_id)
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# set mac address
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self.node_net_client.device_mac(iface.name, str(iface.mac))
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logger.debug("interface mac: %s - %s", iface.name, iface.mac)
|
||||
# set all addresses
|
||||
for ip in iface.ips():
|
||||
# ipv4 check
|
||||
broadcast = None
|
||||
if netaddr.valid_ipv4(ip):
|
||||
broadcast = "+"
|
||||
self.node_net_client.create_address(iface.name, str(ip), broadcast)
|
||||
# configure iface options
|
||||
iface.set_config(self)
|
||||
# set iface up
|
||||
self.node_net_client.device_up(iface.name)
|
||||
|
||||
|
||||
class CoreNetworkBase(NodeBase):
|
||||
"""
|
||||
|
|
@ -917,7 +797,6 @@ class CoreNetworkBase(NodeBase):
|
|||
"""
|
||||
|
||||
linktype: LinkTypes = LinkTypes.WIRED
|
||||
has_custom_iface: bool = False
|
||||
|
||||
def __init__(
|
||||
self,
|
||||
|
|
@ -941,57 +820,6 @@ class CoreNetworkBase(NodeBase):
|
|||
self.linked: Dict[CoreInterface, Dict[CoreInterface, bool]] = {}
|
||||
self.linked_lock: threading.Lock = threading.Lock()
|
||||
|
||||
@abc.abstractmethod
|
||||
def startup(self) -> None:
|
||||
"""
|
||||
Each object implements its own startup method.
|
||||
|
||||
:return: nothing
|
||||
"""
|
||||
raise NotImplementedError
|
||||
|
||||
@abc.abstractmethod
|
||||
def shutdown(self) -> None:
|
||||
"""
|
||||
Each object implements its own shutdown method.
|
||||
|
||||
:return: nothing
|
||||
"""
|
||||
raise NotImplementedError
|
||||
|
||||
@abc.abstractmethod
|
||||
def linknet(self, net: "CoreNetworkBase") -> CoreInterface:
|
||||
"""
|
||||
Link network to another.
|
||||
|
||||
:param net: network to link with
|
||||
:return: created interface
|
||||
"""
|
||||
raise NotImplementedError
|
||||
|
||||
@abc.abstractmethod
|
||||
def custom_iface(self, node: CoreNode, iface_data: InterfaceData) -> CoreInterface:
|
||||
"""
|
||||
Defines custom logic for creating an interface, if required.
|
||||
|
||||
:param node: node to create interface for
|
||||
:param iface_data: data for creating interface
|
||||
:return: created interface
|
||||
"""
|
||||
raise NotImplementedError
|
||||
|
||||
def get_linked_iface(self, net: "CoreNetworkBase") -> Optional[CoreInterface]:
|
||||
"""
|
||||
Return the interface that links this net with another net.
|
||||
|
||||
:param net: interface to get link for
|
||||
:return: interface the provided network is linked to
|
||||
"""
|
||||
for iface in self.get_ifaces():
|
||||
if iface.othernet == net:
|
||||
return iface
|
||||
return None
|
||||
|
||||
def attach(self, iface: CoreInterface) -> None:
|
||||
"""
|
||||
Attach network interface.
|
||||
|
|
@ -1001,6 +829,7 @@ class CoreNetworkBase(NodeBase):
|
|||
"""
|
||||
i = self.next_iface_id()
|
||||
self.ifaces[i] = iface
|
||||
iface.net = self
|
||||
iface.net_id = i
|
||||
with self.linked_lock:
|
||||
self.linked[iface] = {}
|
||||
|
|
@ -1013,56 +842,11 @@ class CoreNetworkBase(NodeBase):
|
|||
:return: nothing
|
||||
"""
|
||||
del self.ifaces[iface.net_id]
|
||||
iface.net = None
|
||||
iface.net_id = None
|
||||
with self.linked_lock:
|
||||
del self.linked[iface]
|
||||
|
||||
def links(self, flags: MessageFlags = MessageFlags.NONE) -> List[LinkData]:
|
||||
"""
|
||||
Build link data objects for this network. Each link object describes a link
|
||||
between this network and a node.
|
||||
|
||||
:param flags: message type
|
||||
:return: list of link data
|
||||
"""
|
||||
all_links = []
|
||||
# build a link message from this network node to each node having a
|
||||
# connected interface
|
||||
for iface in self.get_ifaces():
|
||||
unidirectional = 0
|
||||
linked_node = iface.node
|
||||
if linked_node is None:
|
||||
# two layer-2 switches/hubs linked together
|
||||
if not iface.othernet:
|
||||
continue
|
||||
linked_node = iface.othernet
|
||||
if linked_node.id == self.id:
|
||||
continue
|
||||
if iface.local_options != iface.options:
|
||||
unidirectional = 1
|
||||
iface_data = iface.get_data()
|
||||
link_data = LinkData(
|
||||
message_type=flags,
|
||||
type=self.linktype,
|
||||
node1_id=self.id,
|
||||
node2_id=linked_node.id,
|
||||
iface2=iface_data,
|
||||
options=iface.local_options,
|
||||
)
|
||||
link_data.options.unidirectional = unidirectional
|
||||
all_links.append(link_data)
|
||||
if unidirectional:
|
||||
link_data = LinkData(
|
||||
message_type=MessageFlags.NONE,
|
||||
type=self.linktype,
|
||||
node1_id=linked_node.id,
|
||||
node2_id=self.id,
|
||||
options=iface.options,
|
||||
)
|
||||
link_data.options.unidirectional = unidirectional
|
||||
all_links.append(link_data)
|
||||
return all_links
|
||||
|
||||
|
||||
class Position:
|
||||
"""
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue