Add net.ipv4.tcp_retries2 setting

luci-app-openmptcprouter/luasrc/controller/openmptcprouter.lua

@@ -666,6 +666,10 @@ function settings_add()
 	local tcp_syn_retries = luci.http.formvalue("tcp_syn_retries")
 	luci.sys.exec("sysctl -w net.ipv4.tcp_syn_retries=%s" % tcp_syn_retries)
 	luci.sys.exec("sed -i 's:^net.ipv4.tcp_syn_retries=[0-9]*:net.ipv4.tcp_syn_retries=%s:' /etc/sysctl.d/zzz_openmptcprouter.conf" % tcp_syn_retries)
+
+	--local tcp_retries2 = luci.http.formvalue("tcp_retries2")
+	--luci.sys.exec("sysctl -w net.ipv4.tcp_retries2=%s" % tcp_retries2)
+	--luci.sys.exec("sed -i 's:^net.ipv4.tcp_retries2=[0-9]*:net.ipv4.tcp_retries2=%s:' /etc/sysctl.d/zzz_openmptcprouter.conf" % tcp_retries2)
 	
 	-- Set tcp_fastopen
 	local tcp_fastopen = luci.http.formvalue("tcp_fastopen")

luci-app-openmptcprouter/root/etc/init.d/openmptcprouter

@@ -65,8 +65,8 @@ start_service() {
 		done
 	}
 	# remove sysctl already defined in /etc/sysctl.d/
-	sed -i -e '/tcp_fin_timeout/d' -e '/tcp_keepalive_time/d' -e '/nf_conntrack_max/d' -e '/tcp_syn_retries/d' -e '/tcp_fastopen/d' /etc/sysctl.conf
-	sed -i -e '/tcp_fin_timeout/d' -e '/tcp_keepalive_time/d' -e '/nf_conntrack_max/d' -e '/tcp_syn_retries/d' -e '/tcp_fastopen/d' /etc/sysctl.d/10-default.conf
+	sed -i -e '/tcp_fin_timeout/d' -e '/tcp_keepalive_time/d' -e '/nf_conntrack_max/d' -e '/tcp_syn_retries/d' -e '/tcp_fastopen/d' -e '/tcp_retries2/d' /etc/sysctl.conf
+	sed -i -e '/tcp_fin_timeout/d' -e '/tcp_keepalive_time/d' -e '/nf_conntrack_max/d' -e '/tcp_syn_retries/d' -e '/tcp_fastopen/d' -e '/tcp_retries2/d' /etc/sysctl.d/10-default.conf
 }
 
 reload_service() {

luci-app-openmptcprouter/root/etc/sysctl.d/zzz_openmptcprouter.conf

@@ -2,5 +2,6 @@ net.ipv4.tcp_keepalive_time=7200
 net.ipv6.conf.all.disable_ipv6=0
 net.ipv4.tcp_fin_timeout=60
 net.ipv4.tcp_syn_retries=3
+net.ipv4.tcp_retries2=3
 net.ipv4.tcp_fastopen=3
 net.ipv4.tcp_low_latency=1