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IPv4: Rename source/destination in socket classes to local/peer.

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It was way too ambiguous who's the source and who's the destination, and it
didn't really follow a logical pattern. "Local port" vs "Peer port" is super
obvious, so let's call it that.
This commit is contained in:
Andreas Kling 2019-05-04 16:40:34 +02:00
parent 780d2a08c4
commit 5e938868a2
7 changed files with 80 additions and 88 deletions
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34
Kernel/Net/TCPSocket.cpp
View file

@ -36,7 +36,7 @@ TCPSocket::TCPSocket(int protocol)
TCPSocket::~TCPSocket()
{
LOCKER(sockets_by_port().lock());
sockets_by_port().resource().remove(source_port());
sockets_by_port().resource().remove(local_port());
}
Retained<TCPSocket> TCPSocket::create(int protocol)
@ -60,7 +60,7 @@ int TCPSocket::protocol_receive(const ByteBuffer& packet_buffer, void* buffer, s
int TCPSocket::protocol_send(const void* data, int data_length)
{
auto* adapter = adapter_for_route_to(destination_address());
auto* adapter = adapter_for_route_to(peer_address());
if (!adapter)
return -EHOSTUNREACH;
send_tcp_packet(TCPFlags::PUSH | TCPFlags::ACK, data, data_length);
@ -70,14 +70,14 @@ int TCPSocket::protocol_send(const void* data, int data_length)
void TCPSocket::send_tcp_packet(word flags, const void* payload, int payload_size)
{
// FIXME: Maybe the socket should be bound to an adapter instead of looking it up every time?
auto* adapter = adapter_for_route_to(destination_address());
auto* adapter = adapter_for_route_to(peer_address());
ASSERT(adapter);
auto buffer = ByteBuffer::create_zeroed(sizeof(TCPPacket) + payload_size);
auto& tcp_packet = *(TCPPacket*)(buffer.pointer());
ASSERT(source_port());
tcp_packet.set_source_port(source_port());
tcp_packet.set_destination_port(destination_port());
ASSERT(local_port());
tcp_packet.set_source_port(local_port());
tcp_packet.set_destination_port(peer_port());
tcp_packet.set_window_size(1024);
tcp_packet.set_sequence_number(m_sequence_number);
tcp_packet.set_data_offset(sizeof(TCPPacket) / sizeof(dword));
@ -93,18 +93,18 @@ void TCPSocket::send_tcp_packet(word flags, const void* payload, int payload_siz
}
memcpy(tcp_packet.payload(), payload, payload_size);
tcp_packet.set_checksum(compute_tcp_checksum(adapter->ipv4_address(), destination_address(), tcp_packet, payload_size));
tcp_packet.set_checksum(compute_tcp_checksum(adapter->ipv4_address(), peer_address(), tcp_packet, payload_size));
kprintf("sending tcp packet from %s:%u to %s:%u with (%s %s) seq_no=%u, ack_no=%u\n",
adapter->ipv4_address().to_string().characters(),
source_port(),
destination_address().to_string().characters(),
destination_port(),
local_port(),
peer_address().to_string().characters(),
peer_port(),
tcp_packet.has_syn() ? "SYN" : "",
tcp_packet.has_ack() ? "ACK" : "",
tcp_packet.sequence_number(),
tcp_packet.ack_number()
);
adapter->send_ipv4(MACAddress(), destination_address(), IPv4Protocol::TCP, move(buffer));
adapter->send_ipv4(MACAddress(), peer_address(), IPv4Protocol::TCP, move(buffer));
}
NetworkOrdered<word> TCPSocket::compute_tcp_checksum(const IPv4Address& source, const IPv4Address& destination, const TCPPacket& packet, word payload_size)
@ -150,11 +150,11 @@ NetworkOrdered<word> TCPSocket::compute_tcp_checksum(const IPv4Address& source,
KResult TCPSocket::protocol_connect(FileDescriptor& descriptor, ShouldBlock should_block)
{
auto* adapter = adapter_for_route_to(destination_address());
auto* adapter = adapter_for_route_to(peer_address());
if (!adapter)
return KResult(-EHOSTUNREACH);
allocate_source_port_if_needed();
allocate_local_port_if_needed();
m_sequence_number = 0;
m_ack_number = 0;
@ -171,7 +171,7 @@ KResult TCPSocket::protocol_connect(FileDescriptor& descriptor, ShouldBlock shou
return KResult(-EINPROGRESS);
}
int TCPSocket::protocol_allocate_source_port()
int TCPSocket::protocol_allocate_local_port()
{
static const word first_ephemeral_port = 32768;
static const word last_ephemeral_port = 60999;
@ -182,7 +182,7 @@ int TCPSocket::protocol_allocate_source_port()
for (word port = first_scan_port;;) {
auto it = sockets_by_port().resource().find(port);
if (it == sockets_by_port().resource().end()) {
set_source_port(port);
set_local_port(port);
sockets_by_port().resource().set(port, this);
return port;
}
@ -203,8 +203,8 @@ bool TCPSocket::protocol_is_disconnected() const
KResult TCPSocket::protocol_bind()
{
LOCKER(sockets_by_port().lock());
if (sockets_by_port().resource().contains(source_port()))
if (sockets_by_port().resource().contains(local_port()))
return KResult(-EADDRINUSE);
sockets_by_port().resource().set(source_port(), this);
sockets_by_port().resource().set(local_port(), this);
return KSuccess;
}