示例#1
0
    def runTest(self):
        ing_port = flow_mods_port_map.keys()[0]
        out_port1 = flow_mods_port_map.keys()[1]

        testutils.delete_all_flows(self.controller, self.logger)
        flow_add = message.flow_mod()
        flow_add.buffer_id = 0xffffffff
        flow_add.header.xid = 123
        flow_add.table_id = 0
        flow_add.command = ofp.OFPFC_ADD
        flow_add.match_fields.add(match.eth_type(value=0x86dd))
        flow_add.match_fields.add(match.ipv4_src(value=3232235521))
        flow_add.match_fields.add(match.ipv4_dst(value=3232235522))
        flow_add.match_fields.add(match.metadata(value=0))
        "new a instruction"
        inst = instruction.instruction_write_actions()
        "new a output actions"
        act = action.action_output()
        act.port = out_port1
        inst.actions.add(act)
        flow_add.instructions.add(inst)
        #self.controller.message_send(flow_add)
        #print(flow_add.show())
        testutils.ofmsg_send(self, flow_add)

        (response, raw) = self.controller.poll(ofp.OFPT_ERROR, 2)
        self.assertTrue(response is not None, 'No error message received')
        self.assertEqual(
            ofp.OFPET_BAD_MATCH, response.type,
            'Error message type mismatch: ' + str(ofp.OFPET_BAD_MATCH) +
            " != " + str(response.type))
        self.assertEqual(
            ofp.OFPBMC_BAD_PREREQ, response.code,
            'Error message code mismatch: ' + str(ofp.OFPBMC_BAD_PREREQ) +
            " != " + str(response.code))
示例#2
0
    def runTest(self):
        ing_port = flow_mods_port_map.keys()[0]
        out_port1 = flow_mods_port_map.keys()[1]

        testutils.delete_all_flows(self.controller, self.logger)
        flow_add = message.flow_mod()
        flow_add.buffer_id = 0xffffffff;
        flow_add.header.xid = 123
        flow_add.table_id = 0
        flow_add.command = ofp.OFPFC_ADD
        flow_add.match_fields.add(match.eth_type(value = 0x86dd))
        flow_add.match_fields.add(match.ipv4_src(value = 3232235521))
        flow_add.match_fields.add(match.ipv4_dst(value = 3232235522))
        flow_add.match_fields.add(match.metadata(value = 0))
        "new a instruction"
        inst = instruction.instruction_write_actions()
        "new a output actions"
        act = action.action_output()
        act.port = out_port1
        inst.actions.add(act)
        flow_add.instructions.add(inst)
        #self.controller.message_send(flow_add)
        #print(flow_add.show())
	testutils.ofmsg_send(self, flow_add)

        (response, raw) = self.controller.poll(ofp.OFPT_ERROR, 2)
        self.assertTrue(response is not None, 'No error message received')
        self.assertEqual(ofp.OFPET_BAD_MATCH, response.type,
                       'Error message type mismatch: ' +
                       str(ofp.OFPET_BAD_MATCH) + " != " +
                       str(response.type))
        self.assertEqual(ofp.OFPBMC_BAD_PREREQ, response.code,
                       'Error message code mismatch: ' +
                       str(ofp.OFPBMC_BAD_PREREQ) + " != " +
                       str(response.code))
示例#3
0
def packet_to_flow_match(packet):
    """
    Create a flow match that matches packet with the given wildcards

    @param packet The packet to use as a flow template
    @param pkt_format Currently only L2 is supported.  Will indicate the 
    overall packet type for parsing
    @return An ofp_match object if successful.  None if format is not
    recognized.  The wildcards of the match will be cleared for the
    values extracted from the packet.

    @todo check min length of packet
    @todo Check if packet is other than L2 format
    @todo implement other fields covered by OpenFlow 1.2 
    """
    match_ls = match_list()

    if Ether in packet:
        ether = packet[Ether]
        eth_type = match.eth_type(ether.type)
        eth_dst = match.eth_dst(parse_mac(ether.dst))
        eth_src = match.eth_src(parse_mac(ether.src))
        match_ls.add(eth_type)
        match_ls.add(eth_dst)
        match_ls.add(eth_src)
    else:
        return match_ls

    if Dot1Q in packet:
        #TODO: nicer way to get last vlan tag?
        vlan = packet[Dot1Q:0]
        vlan_vid = match.vlan_vid(vlan.vlan)
        vlan_pcp = match.vlan_pcp(vlan.prio)
        match_ls.add(vlan_vid)
        match_ls.add(vlan_pcp)
        vlan_pl = vlan.payload
        while vlan_pl is not None and vlan_pl.name == Dot1Q.name:
            vlan = vlan_pl
            vlan_pl = vlan.payload
        #We need to overwrite the already
        # inserted eth_type
        eth_index = match.tlvs.index()
        eth_type = match.eth_type(vlan.type)
        match_ls.tlvs.insert(vlan.type, eth_index)
    #TODO ARP

    if MPLS in packet:
        mpls = packet[MPLS:0]
        mpls_label = match.mpls_label(mpls.label)
        mpls_tc = match.mpls_tc(mpls.cos)
        match_ls.add(mpls_label)
        match_ls.add(mpls_tc)
        return match_ls

    if IP in packet:
        ip = packet[IP]
        ipv4_src = match.ipv4_src(parse_ip(ip.src))
        ipv4_dst = match.ipv4_dst(parse_ip(ip.dst))
        ip_dscp = match.ip_dscp(ip.tos >> 2)
        ip_ecn = match.ip_ecn(ip.tos & 0x03)
        match_ls.add(ipv4_src)
        match_ls.add(ipv4_dst)
        match_ls.add(ip_dscp)
        match_ls.add(ip_ecn)
    else:
        return match_ls

    if TCP in packet:
        tcp = packet[TCP]
        ip_proto = match.ip_proto(6)
        tcp_src = match.tcp_src(tcp.sport)
        tcp_dst = match.tcp_dst(tcp.dport)
        match_ls.add(ip_proto)
        match_ls.add(tcp_src)
        match_ls.add(tcp_dst)
        return match_ls

    if UDP in packet:
        udp = packet[UDP]
        ip_proto = match.ip_proto(17)
        udp_src = match.tcp_src(udp.sport)
        udp_dst = match.tcp_dst(udp.dport)
        match_ls.add(ip_proto)
        match_ls.add(udp_src)
        match_ls.add(udp_dst)
        returnmatch_ls

    if ICMP in packet:
        icmp = packet[ICMP]
        ip_proto = match.ip_proto(1)
        icmp_type = match.icmp_type(icmp.type)
        icmp_code = match.icmp_code(icmp.code)
        match_ls.add(icmp_type)
        match_ls.add(icmp_code)
        return match_ls

    return match_ls
示例#4
0
def packet_to_flow_match(packet):
    """
    Create a flow match that matches packet with the given wildcards

    @param packet The packet to use as a flow template
    @param pkt_format Currently only L2 is supported.  Will indicate the 
    overall packet type for parsing
    @return An ofp_match object if successful.  None if format is not
    recognized.  The wildcards of the match will be cleared for the
    values extracted from the packet.

    @todo check min length of packet
    @todo Check if packet is other than L2 format
    @todo implement other fields covered by OpenFlow 1.2 
    """
    match_ls = match_list()
    
    if Ether in packet:
        ether = packet[Ether]
        eth_type = match.eth_type(ether.type)
        eth_dst = match.eth_dst(parse_mac(ether.dst))
        eth_src = match.eth_src(parse_mac(ether.src))
        match_ls.add(eth_type)
        match_ls.add(eth_dst)
        match_ls.add(eth_src)
    else:
        return match_ls

    if Dot1Q in packet:
        #TODO: nicer way to get last vlan tag?
        vlan = packet[Dot1Q:0]
        vlan_vid = match.vlan_vid(vlan.vlan)
        vlan_pcp = match.vlan_pcp(vlan.prio)
        match_ls.add(vlan_vid)
        match_ls.add(vlan_pcp)
        vlan_pl = vlan.payload
        while vlan_pl is not None and vlan_pl.name == Dot1Q.name:
            vlan = vlan_pl
            vlan_pl = vlan.payload
        #We need to overwrite the already
        # inserted eth_type    
        eth_index = match.tlvs.index()
        eth_type = match.eth_type(vlan.type)
        match_ls.tlvs.insert(vlan.type,eth_index)
    #TODO ARP

    if MPLS in packet:
        mpls = packet[MPLS:0]
        mpls_label = match.mpls_label(mpls.label)
        mpls_tc =  match.mpls_tc(mpls.cos)
        match_ls.add(mpls_label)
        match_ls.add(mpls_tc)
        return match_ls

    if IP in packet:
        ip = packet[IP]
        ipv4_src = match.ipv4_src(parse_ip(ip.src))
        ipv4_dst = match.ipv4_dst(parse_ip(ip.dst))
        ip_dscp =  match.ip_dscp(ip.tos >> 2) 
        ip_ecn =   match.ip_ecn(ip.tos & 0x03)
        match_ls.add(ipv4_src)
        match_ls.add(ipv4_dst)
        match_ls.add(ip_dscp)
        match_ls.add(ip_ecn)
    else:
        return match_ls
    
    if TCP in packet:
        tcp = packet[TCP]
        ip_proto = match.ip_proto(6)
        tcp_src = match.tcp_src(tcp.sport)
        tcp_dst = match.tcp_dst(tcp.dport)
        match_ls.add(ip_proto)
        match_ls.add(tcp_src)
        match_ls.add(tcp_dst)
        return match_ls

    if UDP in packet:
        udp = packet[UDP]
        ip_proto = match.ip_proto(17)
        udp_src = match.tcp_src(udp.sport)
        udp_dst = match.tcp_dst(udp.dport)
        match_ls.add(ip_proto)
        match_ls.add(udp_src)
        match_ls.add(udp_dst)        
        returnmatch_ls

    if ICMP in packet:
        icmp = packet[ICMP]
        ip_proto = match.ip_proto(1)
        icmp_type = match.icmp_type(icmp.type)
        icmp_code = match.icmp_code(icmp.code)
        match_ls.add(icmp_type)
        match_ls.add(icmp_code)        
        return match_ls

    return match_ls