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Kernel: Refactor TCP/IP stack
This has several significant changes to the networking stack. * Significant refactoring of the TCP state machine. Right now it's probably more fragile than it used to be, but handles quite a lot more of the handshake process. * `TCPSocket` holds a `NetworkAdapter*`, assigned during `connect()` or `bind()`, whichever comes first. * `listen()` is now virtual in `Socket` and intended to be implemented in its child classes * `listen()` no longer works without `bind()` - this is a bit of a regression, but listening sockets didn't work at all before, so it's not possible to observe the regression. * A file is exposed at `/proc/net_tcp`, which is a JSON document listing the current TCP sockets with a bit of metadata. * There's an `ETHERNET_VERY_DEBUG` flag for dumping packet's content out to `kprintf`. It is, indeed, _very debug_.
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parent
c973a51a23
commit
73c998dbfc
12 changed files with 446 additions and 84 deletions
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@ -1,8 +1,8 @@
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#pragma once
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#include <AK/HashTable.h>
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#include <AK/RefPtr.h>
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#include <AK/RefCounted.h>
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#include <AK/RefPtr.h>
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#include <AK/Vector.h>
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#include <Kernel/FileSystem/File.h>
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#include <Kernel/KResult.h>
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@ -35,10 +35,10 @@ public:
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bool can_accept() const { return !m_pending.is_empty(); }
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RefPtr<Socket> accept();
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bool is_connected() const { return m_connected; }
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KResult listen(int backlog);
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virtual KResult bind(const sockaddr*, socklen_t) = 0;
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virtual KResult connect(FileDescription&, const sockaddr*, socklen_t, ShouldBlock) = 0;
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virtual KResult listen(int) = 0;
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virtual bool get_local_address(sockaddr*, socklen_t*) = 0;
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virtual bool get_peer_address(sockaddr*, socklen_t*) = 0;
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virtual bool is_local() const { return false; }
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@ -73,6 +73,9 @@ protected:
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void load_receive_deadline();
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void load_send_deadline();
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int backlog() const { return m_backlog; }
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void set_backlog(int backlog) { m_backlog = backlog; }
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virtual const char* class_name() const override { return "Socket"; }
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private:
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