mirror of
https://github.com/RGBCube/serenity
synced 2025-07-25 17:47:44 +00:00
IPv4: More hacking on bringing up TCP support.
This was a bit more complicated than I expected, but it's moving forward.
This commit is contained in:
parent
7aba68d51c
commit
032d9d7065
7 changed files with 193 additions and 33 deletions
25
Kernel/TCP.h
25
Kernel/TCP.h
|
@ -2,6 +2,17 @@
|
|||
|
||||
#include <Kernel/IPv4.h>
|
||||
|
||||
struct TCPFlags {
|
||||
enum : word {
|
||||
FIN = 0x01,
|
||||
SYN = 0x02,
|
||||
RST = 0x04,
|
||||
PUSH = 0x08,
|
||||
ACK = 0x10,
|
||||
URG = 0x20
|
||||
};
|
||||
};
|
||||
|
||||
class [[gnu::packed]] TCPPacket {
|
||||
public:
|
||||
TCPPacket() { }
|
||||
|
@ -19,8 +30,14 @@ public:
|
|||
dword ack_number() const { return m_ack_number; }
|
||||
void set_ack_number(dword number) { m_ack_number = number; }
|
||||
|
||||
word flags() const { return m_flags; }
|
||||
void set_flags(word flags) { m_flags = flags; }
|
||||
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; }
|
||||
|
||||
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; }
|
||||
|
@ -40,10 +57,10 @@ private:
|
|||
NetworkOrdered<dword> m_sequence_number;
|
||||
NetworkOrdered<dword> m_ack_number;
|
||||
|
||||
NetworkOrdered<word> m_flags;
|
||||
NetworkOrdered<word> m_flags_and_data_offset;
|
||||
NetworkOrdered<word> m_window_size;
|
||||
NetworkOrdered<word> m_checksum;
|
||||
NetworkOrdered<word> m_urgent;
|
||||
};
|
||||
|
||||
static_assert(sizeof(UDPPacket) == 8);
|
||||
static_assert(sizeof(TCPPacket) == 20);
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue