diff options
| -rw-r--r-- | resources/libraries/robot/dhcp_client.robot | 34 | ||||
| -rw-r--r-- | resources/libraries/robot/ipv4.robot | 29 | ||||
| -rwxr-xr-x | resources/traffic_scripts/dhcp/check_dhcp_request_ack.py | 132 | ||||
| -rwxr-xr-x | resources/traffic_scripts/send_icmp_wait_for_reply.py | 92 | ||||
| -rw-r--r-- | tests/suites/dhcp/dhcp_client.robot | 28 |
5 files changed, 315 insertions, 0 deletions
diff --git a/resources/libraries/robot/dhcp_client.robot b/resources/libraries/robot/dhcp_client.robot index 99a772e273..0dd5e7bbe6 100644 --- a/resources/libraries/robot/dhcp_client.robot +++ b/resources/libraries/robot/dhcp_client.robot @@ -102,3 +102,37 @@ | | ... | ELSE | Catenate | ${args} | --offer_xid | ${offer_xid} | | Run Traffic Script On Node | dhcp/check_dhcp_request.py | | ... | ${tg_node} | ${args} + + +| Send IP configuration to client via DHCP +| | [Documentation] | Run script that sends IP configuration to the DHCP client. +| | ... +| | ... | *Arguments:* +| | ... | - tg_node - TG node. Type: dictionary +| | ... | - tg_interface - TG interface where listen for DHCP DISCOVER, +| | ... | send DHCP OFFER and DHCP ACK after DHCP REQUEST messages. +| | ... | Type: string +| | ... | - server_mac - DHCP server MAC address. Type: string +| | ... | - server_ip - DHCP server IP address. Type: string +| | ... | - client_ip - IP address that is offered to client. Type: string +| | ... | - client_mask - IP netmask that is offered to client. Type: string +| | ... | - lease_time - IP lease time in seconds. Type: integer +| | ... +| | ... | *Return:* +| | ... | - No value returned. +| | ... +| | ... | *Example:* +| | ... +| | ... | \| Send IP configuration to client via DHCP \| ${nodes['TG']} \ +| | ... | \| eth2 \| 08:00:27:66:b8:57 \| 192.168.23.1 \ +| | ... | \| 192.168.23.10 \| 255.255.255.0 \| 86400 \| +| | ... +| | [Arguments] | ${tg_node} | ${tg_interface} +| | ... | ${server_mac} | ${server_ip} | ${client_ip} | ${client_mask} +| | ... | ${lease_time} +| | ${args}= | Catenate | --rx_if | ${tg_interface} +| | ... | --server_mac | ${server_mac} | --server_ip | ${server_ip} +| | ... | --client_ip | ${client_ip} | --client_mask | ${client_mask} +| | ... | --lease_time | ${lease_time} +| | Run Traffic Script On Node | dhcp/check_dhcp_request_ack.py +| | ... | ${tg_node} | ${args} diff --git a/resources/libraries/robot/ipv4.robot b/resources/libraries/robot/ipv4.robot index 9e31076772..4464cbc53c 100644 --- a/resources/libraries/robot/ipv4.robot +++ b/resources/libraries/robot/ipv4.robot @@ -125,3 +125,32 @@ | | :FOR | ${dut_node} | ${interface} | ${address} | ${prefix} | IN | @{args} | | | Set Interface Address | ${dut_node} | ${interface} | ${address} | | | ... | ${prefix} + +| Node replies to ICMP echo request +| | [Documentation] | Run traffic script that waits for ICMP reply and ignores +| | ... | all other packets. +| | ... +| | ... | *Arguments:* +| | ... | - tg_node - TG node where run traffic script. Type: dictionary +| | ... | - tg_interface - TG interface where send ICMP echo request. +| | ... | Type: string +| | ... | - dst_mac - Destination MAC address. Type: string +| | ... | - src_mac - Source MAC address. Type: string +| | ... | - dst_ip - Destination IP address. Type: string +| | ... | - src_ip - Source IP address. Type: string +| | ... | - timeout - Wait timeout in seconds (Default: 10). Type: integer +| | ... +| | ... | *Example:* +| | ... +| | ... | \| Node replies to ICMP echo request \ +| | ... | \| ${nodes['TG']} \| eth2 \ +| | ... | \| 08:00:27:46:2b:4c \| 08:00:27:66:b8:57 \ +| | ... | \| 192.168.23.10 \| 192.168.23.1 \| 10 \| +| | ... +| | [Arguments] | ${tg_node} | ${tg_interface} +| | ... | ${dst_mac} | ${src_mac} | ${dst_ip} | ${src_ip} | ${timeout}=${10} +| | ${args}= | Catenate | --rx_if | ${tg_interface} | --tx_if | ${tg_interface} +| | ... | --dst_mac | ${dst_mac} | --src_mac | ${src_mac} +| | ... | --dst_ip | ${dst_ip} | --src_ip | ${src_ip} | --timeout | ${timeout} +| | Run Traffic Script On Node | send_icmp_wait_for_reply.py +| | ... | ${tg_node} | ${args} diff --git a/resources/traffic_scripts/dhcp/check_dhcp_request_ack.py b/resources/traffic_scripts/dhcp/check_dhcp_request_ack.py new file mode 100755 index 0000000000..8a3839cda7 --- /dev/null +++ b/resources/traffic_scripts/dhcp/check_dhcp_request_ack.py @@ -0,0 +1,132 @@ +#!/usr/bin/env python +# 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. + +"""Traffic script that sends a DHCP ACK message when DHCP REQUEST message is +received.""" + +import sys + +from scapy.layers.l2 import Ether +from scapy.layers.inet import IP, UDP +from scapy.layers.dhcp import BOOTP, DHCP + +from resources.libraries.python.PacketVerifier import RxQueue, TxQueue +from resources.libraries.python.TrafficScriptArg import TrafficScriptArg + + +def is_discover(pkt): + """If DHCP message type option is set to dhcp discover return True, + else return False. False is returned also if exception occurs.""" + dhcp_discover = 1 + try: + dhcp_options = pkt['BOOTP']['DHCP options'].options + message_type = filter(lambda x: x[0] == 'message-type', + dhcp_options) + message_type = message_type[0][1] + return message_type == dhcp_discover + except: + return False + + +def is_request(pkt): + """If DHCP message type option is DHCP REQUEST return True, + else return False. False is returned also if exception occurs.""" + dhcp_request = 3 + try: + dhcp_options = pkt['BOOTP']['DHCP options'].options + message_type = filter(lambda x: x[0] == 'message-type', + dhcp_options) + message_type = message_type[0][1] + return message_type == dhcp_request + except: + return False + + +def main(): + """Main function of the script file.""" + args = TrafficScriptArg(['server_mac', 'server_ip', 'client_ip', + 'client_mask', 'lease_time']) + + server_if = args.get_arg('rx_if') + server_mac = args.get_arg('server_mac') + server_ip = args.get_arg('server_ip') + + client_ip = args.get_arg('client_ip') + client_mask = args.get_arg('client_mask') + + lease_time = int(args.get_arg('lease_time')) + + rxq = RxQueue(server_if) + txq = TxQueue(server_if) + sent_packets = [] + + for _ in range(10): + dhcp_discover = rxq.recv(10) + if is_discover(dhcp_discover): + break + else: + raise RuntimeError("DHCP DISCOVER Rx error.") + + dhcp_offer = Ether(src=server_mac, dst=dhcp_discover.src) + dhcp_offer /= IP(src=server_ip, dst="255.255.255.255") + dhcp_offer /= UDP(sport=67, dport=68) + dhcp_offer /= BOOTP(op=2, + xid=dhcp_discover['BOOTP'].xid, + yiaddr=client_ip, + siaddr=server_ip, + chaddr=dhcp_discover['BOOTP'].chaddr) + dhcp_offer_options = [("message-type", "offer"), # Option 53 + ("subnet_mask", client_mask), # Option 1 + ("server_id", server_ip), # Option 54, dhcp server + ("lease_time", lease_time), # Option 51 + "end"] + dhcp_offer /= DHCP(options=dhcp_offer_options) + + txq.send(dhcp_offer) + sent_packets.append(dhcp_offer) + + max_other_pkts = 10 + for _ in range(0, max_other_pkts): + dhcp_request = rxq.recv(5, sent_packets) + if not dhcp_request: + raise RuntimeError("DHCP REQUEST Rx timeout.") + if is_request(dhcp_request): + break + else: + raise RuntimeError("Max RX packet limit reached.") + + # Send dhcp ack + dhcp_ack = Ether(src=server_mac, dst=dhcp_request.src) + dhcp_ack /= IP(src=server_ip, dst="255.255.255.255") + dhcp_ack /= UDP(sport=67, dport=68) + dhcp_ack /= BOOTP(op=2, + xid=dhcp_request['BOOTP'].xid, + yiaddr=client_ip, + siaddr=server_ip, + flags=dhcp_request['BOOTP'].flags, + chaddr=dhcp_request['BOOTP'].chaddr) + dhcp_ack_options = [("message-type", "ack"), # Option 53. 5: ACK, 6: NAK + ("subnet_mask", client_mask), # Option 1 + ("server_id", server_ip), # Option 54, dhcp server + ("lease_time", lease_time), # Option 51, + "end"] + dhcp_ack /= DHCP(options=dhcp_ack_options) + + txq.send(dhcp_ack) + sent_packets.append(dhcp_ack) + + sys.exit(0) + +if __name__ == "__main__": + main() diff --git a/resources/traffic_scripts/send_icmp_wait_for_reply.py b/resources/traffic_scripts/send_icmp_wait_for_reply.py new file mode 100755 index 0000000000..3c8b71abc8 --- /dev/null +++ b/resources/traffic_scripts/send_icmp_wait_for_reply.py @@ -0,0 +1,92 @@ +#!/usr/bin/env python +# 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. + +"""Traffic script that sends an IP ICMPv4.""" + +import sys + +from scapy.layers.inet import ICMP, IP +from scapy.all import Ether + +from resources.libraries.python.PacketVerifier import RxQueue, TxQueue +from resources.libraries.python.TrafficScriptArg import TrafficScriptArg + + +def is_icmp_reply(pkt): + """Return True if pkt is echo reply, else return False. If exception occurs + return False.""" + try: + if pkt['IP']['ICMP'].type == 0: # 0 - echo-reply + return True + else: + return False + except: + return False + + +def address_check(request, reply): + """Compare request packet source address with reply destination address + and vice versa. If exception occurs return False.""" + try: + return reply['IP'].src == request['IP'].dst \ + and reply['IP'].dst == request['IP'].src + except: + return False + + +def main(): + """Send ICMP echo request and wait for ICMP echo reply. It ignores all other + packets.""" + args = TrafficScriptArg(['dst_mac', 'src_mac', 'dst_ip', 'src_ip', + 'timeout']) + + dst_mac = args.get_arg('dst_mac') + src_mac = args.get_arg('src_mac') + dst_ip = args.get_arg('dst_ip') + src_ip = args.get_arg('src_ip') + tx_if = args.get_arg('tx_if') + rx_if = args.get_arg('rx_if') + timeout = int(args.get_arg('timeout')) + wait_step = 1 + + rxq = RxQueue(rx_if) + txq = TxQueue(tx_if) + sent_packets = [] + + # Create empty ip ICMP packet + icmp_request = (Ether(src=src_mac, dst=dst_mac) / + IP(src=src_ip, dst=dst_ip) / + ICMP()) + # Send created packet on the interface + sent_packets.append(icmp_request) + txq.send(icmp_request) + + for _ in range(1000): + icmp_reply = rxq.recv(wait_step) + if icmp_reply is None: + timeout -= wait_step + if timeout < 0: + raise RuntimeError("ICMP echo Rx timeout") + elif is_icmp_reply(icmp_reply): + if address_check(icmp_request, icmp_reply): + break + else: + raise RuntimeError("Max packet count limit reached") + + print "ICMP echo reply received." + + sys.exit(0) + +if __name__ == "__main__": + main() diff --git a/tests/suites/dhcp/dhcp_client.robot b/tests/suites/dhcp/dhcp_client.robot index 44a6d54c2a..bf019320ad 100644 --- a/tests/suites/dhcp/dhcp_client.robot +++ b/tests/suites/dhcp/dhcp_client.robot @@ -29,6 +29,7 @@ | ${client_mask}= | 255.255.255.0 | ${server_ip}= | 192.168.23.1 | ${own_xid}= | 11112222 +| ${lease_time}= | ${15} *** Test Cases *** | VPP sends a DHCP DISCOVER @@ -87,3 +88,30 @@ | | ... | ${tg_to_dut_if1_mac} | ${server_ip} | | ... | ${dut_to_tg_if1_mac} | ${client_ip} | ${client_mask} | | ... | offer_xid=${own_xid} + +| VPP honors DHCPv4 lease time +| | [Documentation] | Send IP configuration to the VPP client via DHCP. Address +| | ... | is checked with ICMP echo request and there should be no +| | ... | reply for echo request when lease has expired. +| | ... +| | Given Path for 2-node testing is set +| | ... | ${nodes['TG']} | ${nodes['DUT1']} | ${nodes['TG']} +| | And Interfaces in 2-node path are up +| | And VPP Route Add | ${dut_node} | 255.255.255.255 | 32 | ${NONE} | local +| | ... | ${FALSE} | ${NONE} +| | When Set DHCP client on Interface | ${dut_node} | ${dut_to_tg_if1} +| | And Send IP configuration to client via DHCP +| | ... | ${tg_node} | ${tg_to_dut_if1} +| | ... | ${tg_to_dut_if1_mac} | ${server_ip} +| | ... | ${client_ip} | ${client_mask} +| | ... | ${lease_time} +| | And Add Arp On Dut | ${dut_node} | ${dut_to_tg_if1} | ${server_ip} +| | ... | ${tg_to_dut_if1_mac} +| | Then Node replies to ICMP echo request | ${tg_node} | ${tg_to_dut_if1} +| | ... | ${dut_to_tg_if1_mac} | ${tg_to_dut_if1_mac} | ${client_ip} +| | ... | ${server_ip} +| | And Sleep | ${lease_time} +| | And Run Keyword And Expect Error | ICMP echo Rx timeout +| | ... | Node replies to ICMP echo request | ${tg_node} +| | ... | ${tg_to_dut_if1} | ${dut_to_tg_if1_mac} | ${tg_to_dut_if1_mac} +| | ... | ${client_ip} | ${server_ip}
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