Beispiel #1
0
    def runTest(self):
        """
        Add four flow entries:
        First Table; Match IP Src A; goto Second Table
        Second Table; Match IP Src A; send to 1, goto Third Table
        Third Table; Match IP Src A; clear action, goto Fourth Table
        Fourth Table; Match IP Src A; send to 2

        Then send in 2 packets:
        IP A, TCP C; expect out port 1
        IP A, TCP B; expect out port 1

        @param self object instance
        @param EX_ACL_TABLE first table
        @param WC_ACL_TABLE second table
        @param WC_SERV_TABLE third table
        @param EX_L2_TABLE fourth table
        """
        of_ports = testutils.clear_switch(self, pa_port_map.keys(), pa_logger)

        # Set up first match
        #write_goto(self, testutils.EX_ACL_TABLE, testutils.WC_ACL_TABLE)
        act = action.action_set_field()
        field = match.eth_src(parse.parse_mac("aa:aa:aa:aa:aa:aa"))
        act.field.add(field)
        testutils.write_goto_action(self,
                                    testutils.WC_ACL_TABLE,
                                    testutils.WC_SERV_TABLE,
                                    act=act)
        # Set up second match
        testutils.write_goto_output(self, testutils.WC_SERV_TABLE,
                                    testutils.EX_L3_TABLE, of_ports[0],
                                    of_ports[2])
        # Set up third match, "Clear Action"
        inst = instruction.instruction_clear_actions()
        testutils.write_goto(self,
                             testutils.EX_L3_TABLE,
                             testutils.WC_L3_TABLE,
                             of_ports[2],
                             add_inst=inst)
        # Set up fourth match
        testutils.write_output(self, testutils.WC_L3_TABLE, of_ports[1])
        #write_output(self, testutils.EX_L2_TABLE, 4)

        # Generate a packet matching flow 1, 2, and 3; rcv on port[1]
        testutils.reply_check_dp(self,
                                 tcp_sport=1234,
                                 ing_port=of_ports[2],
                                 egr_port=of_ports[1])
Beispiel #2
0
    def runTest(self):
        """
        Add four flow entries:
        First Table; Match IP Src A; goto Second Table
        Second Table; Match IP Src A; send to 1, goto Third Table
        Third Table; Match IP Src A; clear action, goto Fourth Table
        Fourth Table; Match IP Src A; send to 2

        Then send in 2 packets:
        IP A, TCP C; expect out port 1
        IP A, TCP B; expect out port 1

        @param self object instance
        @param EX_ACL_TABLE first table
        @param WC_ACL_TABLE second table
        @param WC_SERV_TABLE third table
        @param EX_L2_TABLE fourth table
        """
        of_ports = testutils.clear_switch(self, pa_port_map.keys(), pa_logger)

        # Set up first match
        #write_goto(self, testutils.EX_ACL_TABLE, testutils.WC_ACL_TABLE)
        act = action.action_set_field()
        field = match.eth_src(parse.parse_mac("aa:aa:aa:aa:aa:aa"))
        act.field.add(field)
        testutils.write_goto_action(self, testutils.WC_ACL_TABLE, testutils.WC_SERV_TABLE ,act = act)
        # Set up second match
        testutils.write_goto_output(self, testutils.WC_SERV_TABLE, testutils.EX_L3_TABLE, of_ports[0], of_ports[2])
        # Set up third match, "Clear Action"
        inst = instruction.instruction_clear_actions()
        testutils.write_goto(self, testutils.EX_L3_TABLE, testutils.WC_L3_TABLE, of_ports[2], add_inst=inst)
        # Set up fourth match
        testutils.write_output(self, testutils.WC_L3_TABLE, of_ports[1])
        #write_output(self, testutils.EX_L2_TABLE, 4)

        # Generate a packet matching flow 1, 2, and 3; rcv on port[1]
        testutils.reply_check_dp(self, tcp_sport=1234,
                       ing_port = of_ports[2], egr_port = of_ports[1])
Beispiel #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
Beispiel #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