| // Copyright 2017 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef ARC_NETWORK_SUBNET_POOL_H_ |
| #define ARC_NETWORK_SUBNET_POOL_H_ |
| |
| #include <stdint.h> |
| |
| #include <bitset> |
| #include <memory> |
| |
| #include <base/callback.h> |
| #include <base/macros.h> |
| #include <base/memory/weak_ptr.h> |
| #include <brillo/brillo_export.h> |
| |
| #include "arc/network/subnet.h" |
| |
| namespace arc_networkd { |
| |
| // Manages IPv4 subnets that can be assigned to virtual machines and containers. |
| // These use non-publicly routable addresses in the range 100.115.92.0/24. |
| class BRILLO_EXPORT SubnetPool { |
| public: |
| SubnetPool() = default; |
| ~SubnetPool(); |
| |
| // Allocates and returns a new VM Subnet in the range 100.115.92.0/24. Returns |
| // nullptr if no subnets are available. |
| std::unique_ptr<Subnet> AllocateVM(); |
| |
| // Allocates and returns a new Container Subnet in the range 100.115.92.0/24. |
| // Returns nullptr if no subnets are available. |
| std::unique_ptr<Subnet> AllocateContainer(); |
| |
| private: |
| // Called by Subnets on destruction to free a given subnet. |
| void ReleaseVM(size_t index); |
| |
| // Called by Subnets on destruction to free a given subnet. |
| void ReleaseContainer(size_t index); |
| |
| // There are 26 /30 subnets. |
| std::bitset<26> vm_subnets_; |
| |
| // There are 4 /28 subnets. |
| std::bitset<4> container_subnets_; |
| |
| base::WeakPtrFactory<SubnetPool> weak_ptr_factory_{this}; |
| DISALLOW_COPY_AND_ASSIGN(SubnetPool); |
| }; |
| |
| } // namespace arc_networkd |
| |
| #endif // ARC_NETWORK_SUBNET_POOL_H_ |