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Kernel: Move networking related files into Kernel/Net/.

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This commit is contained in:
Andreas Kling 2019-04-02 19:54:38 +02:00
parent 718bea73b3
commit 649c81a714
26 changed files with 61 additions and 63 deletions
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69
Kernel/Net/TCP.h Normal file
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@ -0,0 +1,69 @@
#pragma once
#include <Kernel/Net/IPv4.h>
struct TCPFlags {
enum : word {
FIN = 0x01,
SYN = 0x02,
RST = 0x04,
PUSH = 0x08,
ACK = 0x10,
URG = 0x20
};
};
class [[gnu::packed]] TCPPacket {
public:
TCPPacket() { }
~TCPPacket() { }
size_t header_size() const { return data_offset() * sizeof(dword); }
word source_port() const { return m_source_port; }
void set_source_port(word port) { m_source_port = port; }
word destination_port() const { return m_destination_port; }
void set_destination_port(word port) { m_destination_port = port; }
dword sequence_number() const { return m_sequence_number; }
void set_sequence_number(dword number) { m_sequence_number = number; }
dword ack_number() const { return m_ack_number; }
void set_ack_number(dword number) { m_ack_number = number; }
word flags() const { return m_flags_and_data_offset & 0x1ff; }
void set_flags(word flags) { m_flags_and_data_offset = (m_flags_and_data_offset & ~0x1ff) | (flags & 0x1ff); }
bool has_syn() const { return flags() & TCPFlags::SYN; }
bool has_ack() const { return flags() & TCPFlags::ACK; }
bool has_fin() const { return flags() & TCPFlags::FIN; }
byte data_offset() const { return (m_flags_and_data_offset & 0xf000) >> 12; }
void set_data_offset(word data_offset) { m_flags_and_data_offset = (m_flags_and_data_offset & ~0xf000) | data_offset << 12; }
word window_size() const { return m_window_size; }
void set_window_size(word window_size) { m_window_size = window_size; }
word checksum() const { return m_checksum; }
void set_checksum(word checksum) { m_checksum = checksum; }
word urgent() const { return m_urgent; }
void set_urgent(word urgent) { m_urgent = urgent; }
const void* payload() const { return ((const byte*)this) + header_size(); }
void* payload() { return ((byte*)this) + header_size(); }
private:
NetworkOrdered<word> m_source_port;
NetworkOrdered<word> m_destination_port;
NetworkOrdered<dword> m_sequence_number;
NetworkOrdered<dword> m_ack_number;
NetworkOrdered<word> m_flags_and_data_offset;
NetworkOrdered<word> m_window_size;
NetworkOrdered<word> m_checksum;
NetworkOrdered<word> m_urgent;
};
static_assert(sizeof(TCPPacket) == 20);