62 lines
1.5 KiB
C++
62 lines
1.5 KiB
C++
#pragma once
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#include <kernel/Networking/NetworkInterface.h>
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namespace Kernel
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{
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class LoopbackInterface : public NetworkInterface
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{
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public:
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static constexpr size_t buffer_size = BAN::numeric_limits<uint16_t>::max() + 1;
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static constexpr size_t buffer_count = 32;
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public:
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static BAN::ErrorOr<BAN::RefPtr<LoopbackInterface>> create();
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BAN::MACAddress get_mac_address() const override { return {}; }
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bool link_up() override { return true; }
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int link_speed() override { return 1000; }
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size_t payload_mtu() const override { return buffer_size - sizeof(EthernetHeader); }
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protected:
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LoopbackInterface()
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: NetworkInterface(Type::Loopback)
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{}
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~LoopbackInterface();
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BAN::ErrorOr<void> send_bytes(BAN::MACAddress destination, EtherType protocol, BAN::Span<const BAN::ConstByteSpan> payload) override;
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bool can_read_impl() const override { return false; }
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bool can_write_impl() const override { return false; }
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bool has_error_impl() const override { return false; }
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bool has_hungup_impl() const override { return false; }
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private:
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void receive_thread();
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private:
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struct Descriptor
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{
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uint8_t* addr;
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uint32_t size;
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uint8_t state;
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};
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private:
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Mutex m_buffer_lock;
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BAN::UniqPtr<VirtualRange> m_buffer;
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uint32_t m_buffer_tail { 0 };
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uint32_t m_buffer_head { 0 };
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Descriptor m_descriptors[buffer_count] {};
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bool m_thread_should_die { false };
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BAN::Atomic<bool> m_thread_is_dead { true };
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ThreadBlocker m_thread_blocker;
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};
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}
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