wehub-resource-sync
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69 lines
2.4 KiB
Swift
69 lines
2.4 KiB
Swift
//===----------------------------------------------------------------------===//
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// Copyright © 2026 Apple Inc. and the Containerization project authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//===----------------------------------------------------------------------===//
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#if os(Linux)
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import CloudHypervisor
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import ContainerizationExtras
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/// An `Interface` specialization that can produce a `CloudHypervisor.NetConfig`
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/// describing how the cloud-hypervisor VMM should attach the device.
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public protocol CHInterface {
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func chNetConfig() throws -> CloudHypervisor.NetConfig
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}
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/// A TAP-backed network interface for the cloud-hypervisor backend.
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///
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/// IP configuration on the guest side is delegated to `vminitd` (matching the
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/// macOS path). `chNetConfig()` therefore leaves CH's `ip`/`mask` fields nil —
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/// those would assign an address to the host end of the TAP, which we do not
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/// use. Bringing up the TAP and any bridge/NAT plumbing is the caller's
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/// responsibility.
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public struct TAPInterface: CHInterface, Interface, Sendable {
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public let tapName: String
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public let ipv4Address: CIDRv4
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public let ipv4Gateway: IPv4Address?
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public let macAddress: MACAddress?
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public let mtu: UInt32
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public init(
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tapName: String,
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ipv4Address: CIDRv4,
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ipv4Gateway: IPv4Address? = nil,
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macAddress: MACAddress? = nil,
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mtu: UInt32 = 1500
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) {
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self.tapName = tapName
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self.ipv4Address = ipv4Address
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self.ipv4Gateway = ipv4Gateway
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self.macAddress = macAddress
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self.mtu = mtu
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}
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public func chNetConfig() throws -> CloudHypervisor.NetConfig {
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CloudHypervisor.NetConfig(
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tap: tapName,
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ip: nil,
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mask: nil,
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mac: macAddress?.description,
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mtu: Int(mtu),
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numQueues: nil,
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queueSize: nil,
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id: nil
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)
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}
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}
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#endif
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