refactor

core/optun_linux.go

@@ -7,6 +7,7 @@ package openp2p
 import (
 	"fmt"
 	"net"
+	"os"
 	"os/exec"
 	"strings"
 
@@ -17,6 +18,9 @@ import (
 const (
 	tunIfaceName = "optun"
 	PIHeaderSize = 0
+	// sdwan
+	ReadTunBuffSize = 2048
+	ReadTunBuffNum  = 16
 )
 
 var previousIP = ""
@@ -24,10 +28,14 @@ var previousIP = ""
 func (t *optun) Start(localAddr string, detail *SDWANInfo) error {
 	var err error
 	t.tunName = tunIfaceName
-	t.dev, err = tun.CreateTUN(t.tunName, 1420)
+	t.dev, err = tun.CreateTUN(t.tunName, int(detail.Mtu))
 	if err != nil {
 		return err
 	}
+	err = os.WriteFile("/proc/sys/net/ipv4/ip_forward", []byte("1"), 0644)
+	if err != nil {
+		gLog.e("write ip_forward error:%s", err)
+	}
 	return nil
 }
 
@@ -44,8 +52,8 @@ func setTunAddr(ifname, localAddr, remoteAddr string, wintun interface{}) error
 	if err != nil {
 		return err
 	}
-	netlink.LinkSetMTU(ifce, 1375)
-	netlink.LinkSetTxQLen(ifce, 100)
+	netlink.LinkSetMTU(ifce, int(gConf.getSDWAN().Mtu))
+	netlink.LinkSetTxQLen(ifce, 1000)
 	netlink.LinkSetUp(ifce)
 
 	ln, err := netlink.ParseIPNet(localAddr)
@@ -124,10 +132,10 @@ func delRoutesByGateway(gateway string) error {
 			delCmd := exec.Command("route", "del", "-net", fields[0], "gw", gateway)
 			err := delCmd.Run()
 			if err != nil {
-				gLog.Printf(LvERROR, "Delete route %s error:%s", fields[0], err)
+				gLog.e("Delete route %s error:%s", fields[0], err)
 				continue
 			}
-			gLog.Printf(LvINFO, "Delete route ok: %s %s %s\n", fields[0], fields[1], gateway)
+			gLog.i("Delete route ok: %s %s %s\n", fields[0], fields[1], gateway)
 		}
 	}
 	return nil