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Kernel: Merge do_retransmit_packets() into retransmit_packets()

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This commit is contained in:
Gunnar Beutner 2021-05-13 11:34:38 +02:00 committed by Andreas Kling
parent 08aa3a91e3
commit c22296505c
Notes: sideshowbarker 2024-07-18 18:09:36 +09:00 
Author: https://github.com/gunnarbeutner
Commit: https://github.com/SerenityOS/serenity/commit/c22296505ca
Pull-request: https://github.com/SerenityOS/serenity/pull/7078
Reviewed-by: https://github.com/awesomekling
2 changed files with 46 additions and 52 deletions
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97
Kernel/Net/TCPSocket.cpp
View file

@ -242,56 +242,6 @@ KResult TCPSocket::send_tcp_packet(u16 flags, const UserOrKernelBuffer* payload,
return KSuccess;
}
void TCPSocket::do_retransmit_packets()
{
auto routing_decision = route_to(peer_address(), local_address(), bound_interface());
if (routing_decision.is_zero())
return;
Locker locker(m_not_acked_lock, Lock::Mode::Shared);
for (auto& packet : m_not_acked) {
packet.tx_counter++;
if constexpr (TCP_SOCKET_DEBUG) {
auto& tcp_packet = *(const TCPPacket*)(packet.buffer.data());
dbgln("Sending TCP packet from {}:{} to {}:{} with ({}{}{}{}) seq_no={}, ack_no={}, tx_counter={}",
local_address(), local_port(),
peer_address(), peer_port(),
(tcp_packet.has_syn() ? "SYN " : ""),
(tcp_packet.has_ack() ? "ACK " : ""),
(tcp_packet.has_fin() ? "FIN " : ""),
(tcp_packet.has_rst() ? "RST " : ""),
tcp_packet.sequence_number(),
tcp_packet.ack_number(),
packet.tx_counter);
}
auto packet_buffer = UserOrKernelBuffer::for_kernel_buffer(packet.buffer.data());
int err = routing_decision.adapter->send_ipv4(
local_address(), routing_decision.next_hop, peer_address(),
IPv4Protocol::TCP, packet_buffer, packet.buffer.size(), ttl());
if (err < 0) {
auto& tcp_packet = *(const TCPPacket*)(packet.buffer.data());
dmesgln("Error ({}) sending TCP packet from {}:{} to {}:{} with ({}{}{}{}) seq_no={}, ack_no={}, tx_counter={}",
err,
local_address(),
local_port(),
peer_address(),
peer_port(),
(tcp_packet.has_syn() ? "SYN " : ""),
(tcp_packet.has_ack() ? "ACK " : ""),
(tcp_packet.has_fin() ? "FIN " : ""),
(tcp_packet.has_rst() ? "RST " : ""),
tcp_packet.sequence_number(),
tcp_packet.ack_number(),
packet.tx_counter);
} else {
m_packets_out++;
m_bytes_out += packet.buffer.size();
}
}
}
void TCPSocket::receive_tcp_packet(const TCPPacket& packet, u16 size)
{
if (packet.has_ack()) {
@ -566,7 +516,52 @@ void TCPSocket::retransmit_packets()
return;
}
do_retransmit_packets();
auto routing_decision = route_to(peer_address(), local_address(), bound_interface());
if (routing_decision.is_zero())
return;
Locker locker(m_not_acked_lock, Lock::Mode::Shared);
for (auto& packet : m_not_acked) {
packet.tx_counter++;
if constexpr (TCP_SOCKET_DEBUG) {
auto& tcp_packet = *(const TCPPacket*)(packet.buffer.data());
dbgln("Sending TCP packet from {}:{} to {}:{} with ({}{}{}{}) seq_no={}, ack_no={}, tx_counter={}",
local_address(), local_port(),
peer_address(), peer_port(),
(tcp_packet.has_syn() ? "SYN " : ""),
(tcp_packet.has_ack() ? "ACK " : ""),
(tcp_packet.has_fin() ? "FIN " : ""),
(tcp_packet.has_rst() ? "RST " : ""),
tcp_packet.sequence_number(),
tcp_packet.ack_number(),
packet.tx_counter);
}
auto packet_buffer = UserOrKernelBuffer::for_kernel_buffer(packet.buffer.data());
int err = routing_decision.adapter->send_ipv4(
local_address(), routing_decision.next_hop, peer_address(),
IPv4Protocol::TCP, packet_buffer, packet.buffer.size(), ttl());
if (err < 0) {
auto& tcp_packet = *(const TCPPacket*)(packet.buffer.data());
dmesgln("Error ({}) sending TCP packet from {}:{} to {}:{} with ({}{}{}{}) seq_no={}, ack_no={}, tx_counter={}",
err,
local_address(),
local_port(),
peer_address(),
peer_port(),
(tcp_packet.has_syn() ? "SYN " : ""),
(tcp_packet.has_ack() ? "ACK " : ""),
(tcp_packet.has_fin() ? "FIN " : ""),
(tcp_packet.has_rst() ? "RST " : ""),
tcp_packet.sequence_number(),
tcp_packet.ack_number(),
packet.tx_counter);
} else {
m_packets_out++;
m_bytes_out += packet.buffer.size();
}
}
}
}

1
Kernel/Net/TCPSocket.h
View file

@ -176,7 +176,6 @@ private:
virtual KResult protocol_bind() override;
virtual KResult protocol_listen() override;
void do_retransmit_packets();
void enqueue_for_retransmit();
void dequeue_for_retransmit();