JustinAzoff · January 15, 2016 20:22 · Nov 30, 2015 · Apr 9, 2015
diff --git a/InterfaceSetup.py b/InterfaceSetup.py
@@ -25,7 +25,7 @@ def init(self):
         return True
 
     def options(self):
-        return [("mtu", "int", "9000", "Interface MTU"),
+        return [("mtu", "int", "9710", "Interface MTU"),
                 ("enabled", "string", "0", "Set to enable plugin")]
 
     def cmd_start_pre(self, nodes):
@@ -38,7 +38,7 @@ def cmd_start_pre(self, nodes):
         host_nodes = {}
         for n in nodes:
             if n.interface:
-                host_nodes[n.host] = n
+                host_nodes[(n.host, n.interface)] = n
 
         cmds = []
         for n in host_nodes.values():

diff --git a/InterfaceSetup.py b/InterfaceSetup.py
@@ -0,0 +1,50 @@
+#
+# A plugin to setup capture interfaces
+# The plugin is off by default. To enable it, add "interfacesetup.enabled=1" to broctl.cfg.
+#
+
+import BroControl.plugin
+
+class InterfaceSetupPlugin(BroControl.plugin.Plugin):
+    def __init__(self):
+        super(InterfaceSetupPlugin, self).__init__(apiversion=1)
+
+    def name(self):
+        return "InterfaceSetupPlugin"
+
+    def prefix(self):
+        return "interfacesetup"
+
+    def pluginVersion(self):
+        return 1
+
+    def init(self):
+        if self.getOption("enabled") == "0":
+            return False
+
+        return True
+
+    def options(self):
+        return [("mtu", "int", "9000", "Interface MTU"),
+                ("enabled", "string", "0", "Set to enable plugin")]
+
+    def cmd_start_pre(self, nodes):
+        if not nodes:
+            return
+
+        mtu = self.getOption("mtu")
+        self.message("InterfaceSetupPlugin: mtu=%s" % (mtu))
+
+        host_nodes = {}
+        for n in nodes:
+            if n.interface:
+                host_nodes[n.host] = n
+
+        cmds = []
+        for n in host_nodes.values():
+            cmd = "/sbin/ifconfig %s up mtu %s" % (n.interface, mtu)
+            cmds.append((n, cmd))
+            cmd = "/sbin/ethtool -K %s gro off lro off rx off tx off gso off" % (n.interface)
+            cmds.append((n, cmd))
+
+        self.executeParallel(cmds)