From c983e966645d292594284c8fca29a4b4ae225e82 Mon Sep 17 00:00:00 2001
From: Conrad Pankoff <deoxxa@fknsrs.biz>
Date: Sun, 8 Sep 2019 19:40:26 +1000
Subject: [PATCH] Kernel: Use timeval_sub for TCP retransmissions and lower
 timer to 500ms

---
 Kernel/Net/TCPSocket.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Kernel/Net/TCPSocket.cpp b/Kernel/Net/TCPSocket.cpp
index 7d411152b8..8f3c15cb5e 100644
--- a/Kernel/Net/TCPSocket.cpp
+++ b/Kernel/Net/TCPSocket.cpp
@@ -1,3 +1,4 @@
+#include <AK/Time.h>
 #include <Kernel/Devices/RandomDevice.h>
 #include <Kernel/FileSystem/FileDescription.h>
 #include <Kernel/Net/NetworkAdapter.h>
@@ -184,7 +185,9 @@ void TCPSocket::send_outgoing_packets()
     auto now = kgettimeofday();
 
     for (auto& packet : m_not_acked) {
-        if (now.tv_sec <= packet.tx_time.tv_sec)
+        timeval diff;
+        timeval_sub(packet.tx_time, now, diff);
+        if (diff.tv_sec < 1 && diff.tv_usec <= 500000)
             continue;
 
         packet.tx_time = now;