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IPv4: More work on the TCP implementation.

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I can now establish a connection to my little test server on the host.
This commit is contained in:
Andreas Kling 2019-03-14 00:20:44 +01:00
parent 032d9d7065
commit 66d55f8e0c
9 changed files with 36 additions and 18 deletions
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19
Kernel/IPv4Socket.cpp
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@ -42,7 +42,6 @@ Retained<IPv4Socket> IPv4Socket::create(int type, int protocol)
IPv4Socket::IPv4Socket(int type, int protocol)
: Socket(AF_INET, type, protocol)
, m_lock("IPv4Socket")
{
kprintf("%s(%u) IPv4Socket{%p} created with type=%u, protocol=%d\n", current->name().characters(), current->pid(), this, type, protocol);
LOCKER(all_sockets().lock());
@ -103,8 +102,17 @@ KResult IPv4Socket::connect(const sockaddr* address, socklen_t address_size)
auto* adapter = NetworkAdapter::from_ipv4_address(IPv4Address(192, 168, 5, 2));
if (!adapter)
ASSERT_NOT_REACHED();
allocate_source_port_if_needed();
send_tcp_packet(*adapter, TCPFlags::SYN);
m_tcp_state = TCPState::Connecting1;
current->set_blocked_socket(this);
block(Process::BlockedConnect);
Scheduler::yield();
ASSERT(is_connected());
return KSuccess;
}
@ -216,11 +224,12 @@ void IPv4Socket::send_tcp_packet(NetworkAdapter& adapter, word flags, const void
{
auto buffer = ByteBuffer::create_zeroed(sizeof(TCPPacket) + payload_size);
auto& tcp_packet = *(TCPPacket*)(buffer.pointer());
ASSERT(m_source_port);
tcp_packet.set_source_port(m_source_port);
tcp_packet.set_destination_port(m_destination_port);
tcp_packet.set_window_size(1024);
tcp_packet.set_sequence_number(m_tcp_sequence_number);
tcp_packet.set_data_offset(5);
tcp_packet.set_data_offset(sizeof(TCPPacket) / sizeof(dword));
tcp_packet.set_flags(flags);
if (flags & TCPFlags::ACK)
@ -310,7 +319,7 @@ ssize_t IPv4Socket::recvfrom(void* buffer, size_t buffer_length, int flags, sock
ByteBuffer packet_buffer;
{
LOCKER(m_lock);
LOCKER(lock());
if (!m_receive_queue.is_empty()) {
packet_buffer = m_receive_queue.take_first();
m_can_read = !m_receive_queue.is_empty();
@ -322,7 +331,7 @@ ssize_t IPv4Socket::recvfrom(void* buffer, size_t buffer_length, int flags, sock
block(Process::BlockedReceive);
Scheduler::yield();
LOCKER(m_lock);
LOCKER(lock());
if (!m_can_read) {
// Unblocked due to timeout.
return -EAGAIN;
@ -378,7 +387,7 @@ ssize_t IPv4Socket::recvfrom(void* buffer, size_t buffer_length, int flags, sock
void IPv4Socket::did_receive(ByteBuffer&& packet)
{
LOCKER(m_lock);
LOCKER(lock());
m_receive_queue.append(move(packet));
m_can_read = true;
#ifdef IPV4_SOCKET_DEBUG