zte's code,first commit

Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/app/Script/scripts/psext_down.sh b/ap/app/Script/scripts/psext_down.sh
new file mode 100755
index 0000000..b9d3877
--- /dev/null
+++ b/ap/app/Script/scripts/psext_down.sh
@@ -0,0 +1,65 @@
+#!/bin/sh
+test_log=`nv get telog_path`
+if [ "$test_log" == "" ]; then
+	test_log=`nv get path_log`"te.log"
+fi
+echo "Info: psext_down.sh $1 start" >> $test_log
+c_id=$1
+ps_if=`nv get pswan`$c_id
+eth_if=`nv get "ps_ext"$c_id`
+ext_br="br"$c_id
+
+#ɾ³ý¶ÔÓ¦µÄ·ÓɹæÔò
+route_del()
+{
+    pdp_ip=`nv get $ps_if"_pdp_ip"`
+	ps_ip=`nv get $ps_if"_ip"`
+	br_ip=`nv get $ext_br"_ip"`
+	marknum=`expr $c_id + 10`
+	rt_num=`expr $c_id + 100`
+	
+	iptables -t mangle -D PREROUTING -i $ext_br -j MARK --set-mark $marknum
+	ip rule del from $pdp_ip fwmark $marknum table $rt_num 
+    ip route del default dev $ps_if table $rt_num
+	
+    marknum=`expr $c_id + 20`
+	rt_num=`expr $c_id + 120`
+    iptables -t mangle -D PREROUTING -i $ps_if -j MARK --set-mark $marknum
+	ip rule del to $pdp_ip fwmark $marknum table $rt_num
+    ip route del default dev $ext_br table $rt_num 
+	#±¾µØÍøÂçÅäÖÃ
+    iptables -t nat -D POSTROUTING -s $ps_ip -o $ps_if -j SNAT --to $pdp_ip
+    if [ $? -ne 0 ];then
+        echo "cmd <<iptables -t nat -D POSTROUTING -s $ps_ip -o $ps_if -j SNAT --to $pdp_ip>> exec failed"  >> $test_log
+    fi
+    route delete default dev $ps_if
+    if [ $? -ne 0 ];then
+        echo "cmd <<route delete default dev $ps_if>> exec failed"  >> $test_log
+    fi
+	
+    ifconfig $ext_br 0.0.0.0
+	ifconfig $ext_br down 2>>$test_log
+	if [ $? -ne 0 ];then
+	    echo "Error: ifconfig $ext_br down failed." >> $test_log
+    fi
+    
+    ifconfig $ps_if 0.0.0.0
+	ifconfig $ps_if down 2>>$test_log
+	if [ $? -ne 0 ];then
+	    echo "Error: ifconfig $ps_if down failed." >> $test_log
+    fi
+	
+    #reset nv
+    nv set $ext_br"_ip"=0.0.0.0
+    nv set $ext_br"_nm"=0.0.0.0
+    nv set $ps_if"_pdp_ip"=0.0.0.0
+    nv set $ps_if"_pridns"=0.0.0.0
+    nv set $ps_if"_secdns"=0.0.0.0
+    nv set $ps_if"_ip"=0.0.0.0
+}
+tc_tbf.sh down $c_id
+route_del
+ifconfig $eth_if down
+ifconfig $ext_br down
+brctl delif $ext_br $eth_if
+brctl delbr $ext_br