scripts: replace scripts required for using socket pktio

When using linux interfaces as socket pktios we need to block
access to those interfaces for applications and some functions
of Linux network stack (ping, etc.).

Signed-off-by: Bogdan Pricope <[email protected]>
Reviewed-by: Matias Elo <[email protected]>

scripts/ofp_linux_interface_acquire.sh

@@ -0,0 +1,38 @@
+#!/bin/bash
+
+# Use this script to block access to a linux interface for other
+# applications before it is utilized as a socket pktio, in OFP
+# example applications.
+
+# Check arguments
+if [ "$#" -ne 1 ]; then
+	echo "Error: Invalid number of parameters."
+	echo "Usage:"
+	echo "  "${0}" <interface_name>"
+	exit 1
+fi
+
+linux_intf=${1}
+ifconfig $linux_intf &> /dev/null
+if [ $? -ne 0 ]; then
+	echo "Error: Invalid interface '"$linux_intf"'."
+	exit 1
+fi
+
+# Check rights
+if [ "$EUID" -ne 0 ]; then
+	echo "Error: Script must be executed with superuser rights."
+	exit 1
+fi
+
+# Set iptables: append drop rules
+iptables -A FORWARD -i $linux_intf -j DROP
+iptables -A INPUT -i $linux_intf -j DROP
+ip6tables -A FORWARD -i $linux_intf -j DROP
+ip6tables -A INPUT -i $linux_intf -j DROP
+
+# Disable arp
+ifconfig $linux_intf -arp
+
+# Flush addresses
+ip addr flush dev $linux_intf

scripts/ofp_linux_interface_release.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+# Use this script to restore access to a linux interface for other
+# applications after it was blocked with ofp_linux_interface_acquire.sh.
+
+# Check arguments
+if [ "$#" -ne 1 ]; then
+	echo "Error: Invalid number of parameters."
+	echo "Usage:"
+	echo "  "${0}" <interface_name>"
+	exit 1
+fi
+
+linux_intf=${1}
+ifconfig $linux_intf &> /dev/null
+if [ $? -ne 0 ]; then
+	echo "Error: Invalid interface '"$linux_intf"'."
+	exit 1
+fi
+
+# Check rights
+if [ "$EUID" -ne 0 ]; then
+	echo "Error: Script must be executed with superuser rights."
+	exit 1
+fi
+
+# Set iptables: delete drop rules
+iptables -D FORWARD -i $linux_intf -j DROP
+iptables -D INPUT -i $linux_intf -j DROP
+ip6tables -D FORWARD -i $linux_intf -j DROP
+ip6tables -D INPUT -i $linux_intf -j DROP
+
+# Enable arp
+ifconfig $linux_intf arp