Hello guys. Im trying to drop all the packets except the ones from a
whitelist. Here is the code that Im using:
@set_ev_cls(ofp_event.EventOFPPacketIn, MAIN_DISPATCHER)
def _packet_in_handler(self, ev):
global flag1
msg = ev.msg
datapath = msg.datapath
ofproto = datapath.ofproto
pkt = packet.Packet(msg.data)
eth = pkt.get_protocol(ethernet.ethernet)
if eth.ethertype == ether_types.ETH_TYPE_LLDP:
# ignore lldp packet
return
dst = eth.dst
src = eth.src
dpid = datapath.id
self.mac_to_port.setdefault(dpid, {})
self.add_flow(datapath,0,0, {},0,0,0) #this creates the drop all
and it works
self.create_allowed_flows() # this creates the flows for the mac
address in the white list
The problem is when I run the ryu-manager mycode.py everything works but
the code get stucked in the packet in handler. So, if I want to update the
whitelist (insert or delete a mac addres), I have to stop the controller
and run again.
Anyone have an idea how to solve this?
Best regards,
--
Alan Helal
Computer Engineer
CREA-ES 041032/D
Mestrando em Informática - Universidade Federal do EspĂrito Santo
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