diff options
Diffstat (limited to 'resources/libraries/python')
| -rw-r--r-- | resources/libraries/python/Classify.py | 38 | ||||
| -rw-r--r-- | resources/libraries/python/IPFIXSetup.py | 129 | ||||
| -rw-r--r-- | resources/libraries/python/IPFIXUtil.py | 102 | ||||
| -rw-r--r-- | resources/libraries/python/PacketVerifier.py | 22 |
4 files changed, 283 insertions, 8 deletions
diff --git a/resources/libraries/python/Classify.py b/resources/libraries/python/Classify.py index dfa5c3377d..8dbe3fb25f 100644 --- a/resources/libraries/python/Classify.py +++ b/resources/libraries/python/Classify.py @@ -37,6 +37,7 @@ class Classify(object): :rtype: tuple(int, int, int) :raises RuntimeError: If VPP can't create table. """ + output = VatExecutor.cmd_from_template(node, "classify_add_table.vat", ip_version=ip_version, direction=direction) @@ -205,6 +206,43 @@ class Classify(object): hex_value=hex_value) @staticmethod + def vpp_configures_classify_session_generic(node, session_type, table_index, + skip_n, match_n, match, + match2=''): + """Configuration of classify session. + + :param node: VPP node to setup classify session. + :param session_type: Session type - hit-next, l2-hit-next, acl-hit-next + or policer-hit-next, and their respective parameters. + :param table_index: Classify table index. + :param skip_n: Number of skip vectors based on mask. + :param match_n: Number of match vectors based on mask. + :param match: Match value - l2, l3, l4 or hex, and their + respective parameters. + :param match2: Additional match values, to avoid using overly long + variables in RobotFramework. + :type node: dict + :type session_type: str + :type table_index: int + :type skip_n: int + :type match_n: int + :type match: str + :type match2: str + """ + + match = ' '.join((match, match2)) + + with VatTerminal(node) as vat: + vat.vat_terminal_exec_cmd_from_template( + "classify_add_session_generic.vat", + type=session_type, + table_index=table_index, + skip_n=skip_n, + match_n=match_n, + match=match, + ) + + @staticmethod def compute_classify_hex_mask(ip_version, protocol, direction): """Compute classify hex mask for TCP or UDP packet matching. diff --git a/resources/libraries/python/IPFIXSetup.py b/resources/libraries/python/IPFIXSetup.py new file mode 100644 index 0000000000..f0f35f3bc6 --- /dev/null +++ b/resources/libraries/python/IPFIXSetup.py @@ -0,0 +1,129 @@ +# Copyright (c) 2016 Cisco and/or its affiliates. +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +"""IPFIX setup library""" + +from resources.libraries.python.topology import Topology +from resources.libraries.python.VatExecutor import VatTerminal + + +class IPFIXSetup(object): + """Class contains methods for seting up IPFIX reporting on DUTs.""" + + def __init__(self): + """Initializer.""" + pass + + @staticmethod + def setup_ipfix_exporter(node, collector, source, fib=None, mtu=None, + interval=None): + """Setup an IPFIX exporter on node to export collected flow data. + + :param node: DUT node. + :param collector: IP address of flow data collector. + :param source: IP address of local interface to send flow data from. + :param fib: fib table ID. + :param mtu: Maximum transfer unit of path to collector. + :param interval: Frequency of sending template packets, in seconds. + :type node: dict + :type collector: str + :type source: str + :type fib: int + :type mtu: int + :type interval: int + """ + + fib = "vrf_id {0}".format(fib) if fib else '' + mtu = "path_mtu {0}".format(mtu) if mtu else '' + interval = "template_interval {0}".format(interval) if interval else '' + + with VatTerminal(node, json_param=False) as vat: + vat.vat_terminal_exec_cmd_from_template('ipfix_exporter_set.vat', + collector=collector, + source=source, + fib=fib, + mtu=mtu, + interval=interval) + + @staticmethod + def assign_interface_to_flow_table(node, interface, table_id, + ip_version='ip4'): + """Assigns a VPP interface to the specified classify table for IPFIX + flow data collection. + + :param node: DUT node. + :param interface: An interface on the DUT node. + :param table_id: ID of a classify table. + :param ip_version: Version of IP protocol. Valid options are ip4, ip6. + :type node: dict + :type interface: str or int + :type table_id: int + :type ip_version: str + """ + + if isinstance(interface, basestring): + sw_if_index = Topology.get_interface_sw_index(node, interface) + elif isinstance(interface, int): + sw_if_index = interface + else: + raise TypeError + + table = "{0}-table {1}".format(ip_version, table_id) + + with VatTerminal(node, json_param=False) as vat: + vat.vat_terminal_exec_cmd_from_template( + "ipfix_interface_enable.vat", + interface=sw_if_index, + table=table, + delete='') + + @staticmethod + def set_ipfix_stream(node, domain=None, src_port=None): + """Set an IPFIX export stream. Can be used to break up IPFIX reports + into separate reporting domains. + + :param node: DUT node. + :param domain: Desired index number of exporting domain. + :param src_port: Source port to use when sending IPFIX packets. Default + is the standard IPFIX port 4739. + :type node: dict + :type domain: int + :type src_port: int + """ + + domain = "domain {0}".format(domain) if domain else '' + src_port = "src_port {0}".format(src_port) if src_port else '' + + with VatTerminal(node, json_param=False) as vat: + vat.vat_terminal_exec_cmd_from_template("ipfix_stream_set.vat", + domain=domain, + src_port=src_port) + + @staticmethod + def assign_classify_table_to_exporter(node, table_id, ip_version='ip4'): + """Assign a classify table to an IPFIX exporter. Classified packets will + be included in the IPFIX flow report. + + :param node: DUT node. + :param table_id: ID of a classify table. + :param ip_version: Version of IP protocol. Valid options are ip4, ip6. + :type node: dict + :type table_id: int + :type ip_version: str + """ + + with VatTerminal(node, json_param=False) as vat: + vat.vat_terminal_exec_cmd_from_template("ipfix_table_add.vat", + table=table_id, + ip_version=ip_version, + add_del='add') diff --git a/resources/libraries/python/IPFIXUtil.py b/resources/libraries/python/IPFIXUtil.py new file mode 100644 index 0000000000..f3247a8982 --- /dev/null +++ b/resources/libraries/python/IPFIXUtil.py @@ -0,0 +1,102 @@ +# Copyright (c) 2016 Cisco and/or its affiliates. +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +"""IPFIX utilities library. Provides classes that allow scapy to work +with IPFIX packets. + + Note: + Template and data sets in one packet are not supported. + Option template sets (Set_ID = 3) are not supported. + """ + + +from scapy.all import Packet, bind_layers +from scapy.fields import * +from scapy.layers.inet import UDP +from scapy.contrib.ppi_geotag import UTCTimeField + + +class IPFIXHandler(object): + """Class for handling IPFIX packets. To use, create instance of class before + dissecting IPFIX packets with scapy, then run update_template every time + an IPFIX template packet is received.""" + + template_elements = { + 4: ByteField("Protocol_ID", 0x00), + 7: ShortField("src_port", 0), + 8: IPField("IPv4_src", ""), + 11: ShortField("dst_port", 0), + 12: IPField("IPv4_dst", ""), + 86: LongField("packetTotalCount", 0), + 180: ShortField("udp_src_port", 0), + 181: ShortField("udp_dst_port", 0), + 182: ShortField("tcp_src_port", 0), + 183: ShortField("tcp_dst_port", 0), + } + + def __init__(self): + """Initializer, registers IPFIX header and template layers with scapy. + """ + bind_layers(UDP, IPFIXHeader, dport=4739) + bind_layers(IPFIXHeader, IPFIXTemplate, Set_ID=2) + + def update_template(self, packet): + """Updates IPFIXData class with new data template. Registers IPFIX data + layer with scapy using the new template. + + :param packet: Packet containing an IPFIX template. + :type packet: scapy.Ether + """ + template_list = packet['IPFIX template'].Template + template_id = packet['IPFIX template'].Template_ID + + IPFIXData.fields_desc = [] + for item in template_list[::2]: + try: + IPFIXData.fields_desc.append(self.template_elements[item]) + except KeyError: + raise KeyError( + "Unknown IPFIX template element with ID {0}".format(item)) + bind_layers(IPFIXHeader, IPFIXData, Set_ID=template_id) + # if the packet doesn't end here, assume it contains more data sets + bind_layers(IPFIXData, IPFIXData) + + +class IPFIXHeader(Packet): + """Class for IPFIX header.""" + name = "IPFIX header" + fields_desc = [StrFixedLenField("Version", 0x000a, length=2), + ShortField("Message Length", 0), + UTCTimeField("Timestamp(UTC)", ""), + IntField("Sequence Number", 0), + IntField("Observation Domain ID", 0), + ShortField("Set_ID", 0), + ShortField("Set_Length", 0) + ] + + +class IPFIXTemplate(Packet): + """Class for IPFIX template layer.""" + name = "IPFIX template" + fields_desc = [ShortField("Template_ID", 256), + ShortField("nFields", 2), + FieldListField("Template", [], ShortField("type_len", ""), + count_from=lambda p: p.nFields*2) + ] + + +class IPFIXData(Packet): + """Class for IPFIX data layer. Needs to be updated with + a template before use.""" + name = "IPFIX flow data" + fields_desc = [] diff --git a/resources/libraries/python/PacketVerifier.py b/resources/libraries/python/PacketVerifier.py index 78c3670135..59ea2db5a3 100644 --- a/resources/libraries/python/PacketVerifier.py +++ b/resources/libraries/python/PacketVerifier.py @@ -204,7 +204,7 @@ class RxQueue(PacketVerifier): def __init__(self, interface_name): PacketVerifier.__init__(self, interface_name) - def recv(self, timeout=3, ignore=None): + def recv(self, timeout=3, ignore=None, verbose=True): """Read next received packet. Returns scapy's Ether() object created from next packet in the queue. @@ -212,9 +212,11 @@ class RxQueue(PacketVerifier): arrives in given timeout queue.Empty exception will be risen. :param timeout: How many seconds to wait for next packet. - :param ignore: Packet list that should be ignored. + :param ignore: List of packets that should be ignored. + :param verbose: Used to suppress detailed logging of received packets. :type timeout: int :type ignore: list + :type verbose: bool :return: Ether() initialized object from packet data. :rtype: scapy.Ether @@ -226,8 +228,9 @@ class RxQueue(PacketVerifier): pkt = self._sock.recv(0x7fff) pkt_pad = auto_pad(pkt) print 'Received packet on {0} of len {1}'.format(self._ifname, len(pkt)) - Ether(pkt).show2() - print + if verbose: + Ether(pkt).show2() + print if ignore is not None: for i, ig_pkt in enumerate(ignore): @@ -238,7 +241,7 @@ class RxQueue(PacketVerifier): # Found the packet in ignore list, get another one # TODO: subtract timeout - time_spent in here ignore.remove(ig_pkt) - return self.recv(timeout, ignore) + return self.recv(timeout, ignore, verbose) return Ether(pkt) @@ -254,16 +257,19 @@ class TxQueue(PacketVerifier): def __init__(self, interface_name): PacketVerifier.__init__(self, interface_name) - def send(self, pkt): + def send(self, pkt, verbose=True): """Send packet out of the bound interface. :param pkt: Packet to send. + :param verbose: Used to supress detailed logging of sent packets. :type pkt: string or scapy Packet derivative. + :type verbose: bool """ print 'Sending packet out of {0} of len {1}'.format(self._ifname, len(pkt)) - Ether(str(pkt)).show2() - print + if verbose: + Ether(str(pkt)).show2() + print pkt = auto_pad(str(pkt)) self._sock.send(pkt) |