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authorPatrik Hrnciar <phrnciar@cisco.com>2016-08-03 09:52:05 +0200
committerDave Wallace <dwallacelf@gmail.com>2016-08-09 18:46:06 +0000
commit91961994a4791be18b0a1f2dda2e5162823670f5 (patch)
treecce005b4476152fdb0931773a5efe017a43cb36f /resources/traffic_scripts/dhcp
parent79191b057fe2f8829753c0a51cf33bf7aeeac5ac (diff)
CSIT-341 Refactor DHCPv4 proxy test
Change-Id: Id44ef8677f8b023c9cb6a3fec7dc8e3fc1d979d4 Signed-off-by: Patrik Hrnciar <phrnciar@cisco.com>
Diffstat (limited to 'resources/traffic_scripts/dhcp')
-rwxr-xr-xresources/traffic_scripts/dhcp/send_and_check_proxy_discover.py (renamed from resources/traffic_scripts/dhcp/send_dhcp_discover.py)41
-rwxr-xr-xresources/traffic_scripts/dhcp/send_and_check_proxy_messages.py (renamed from resources/traffic_scripts/dhcp/send_dhcp_messages.py)100
2 files changed, 69 insertions, 72 deletions
diff --git a/resources/traffic_scripts/dhcp/send_dhcp_discover.py b/resources/traffic_scripts/dhcp/send_and_check_proxy_discover.py
index 1715bb1d01..d8089713fd 100755
--- a/resources/traffic_scripts/dhcp/send_dhcp_discover.py
+++ b/resources/traffic_scripts/dhcp/send_and_check_proxy_discover.py
@@ -12,7 +12,8 @@
# See the License for the specific language governing permissions and
# limitations under the License.
-"""Traffic script that sends DHCP DISCOVER packets."""
+"""Traffic script that sends DHCP DISCOVER packet
+ and check if is received on interface."""
import sys
@@ -25,6 +26,20 @@ 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 main():
"""Send DHCP DISCOVER packet."""
@@ -43,7 +58,7 @@ def main():
dhcp_discover = Ether(dst="ff:ff:ff:ff:ff:ff") / \
IP(src=tx_src_ip, dst=tx_dst_ip) / \
- UDP(sport=68, dport=67) / \
+ UDP(sport=UDP_SERVICES.bootpc, dport=UDP_SERVICES.bootps) / \
BOOTP(op=1,) / \
DHCP(options=[("message-type", "discover"),
"end"])
@@ -51,22 +66,12 @@ def main():
sent_packets.append(dhcp_discover)
txq.send(dhcp_discover)
- ether = rxq.recv(2)
-
- if ether is None:
- raise RuntimeError('DHCP DISCOVER timeout')
-
- if ether[UDP].dport != UDP_SERVICES.bootps:
- raise RuntimeError("UDP destination port error.")
- print "UDP destination port: OK."
-
- if ether[UDP].sport != UDP_SERVICES.bootpc:
- raise RuntimeError("UDP source port error.")
- print "UDP source port: OK."
-
- if ether[DHCP].options[0][1] != 1: # 1 - DISCOVER message
- raise RuntimeError("DHCP DISCOVER message error.")
- print "DHCP DISCOVER message OK."
+ for _ in range(10):
+ dhcp_discover = rxq.recv(2)
+ if is_discover(dhcp_discover):
+ break
+ else:
+ raise RuntimeError("DHCP DISCOVER Rx timeout")
sys.exit(0)
diff --git a/resources/traffic_scripts/dhcp/send_dhcp_messages.py b/resources/traffic_scripts/dhcp/send_and_check_proxy_messages.py
index 7881c24afd..27f148c900 100755
--- a/resources/traffic_scripts/dhcp/send_dhcp_messages.py
+++ b/resources/traffic_scripts/dhcp/send_and_check_proxy_messages.py
@@ -25,27 +25,18 @@ from resources.libraries.python.PacketVerifier import RxQueue, TxQueue
from resources.libraries.python.TrafficScriptArg import TrafficScriptArg
-def dhcp_discover(args):
- """Send DHCP DISCOVER packet."""
-
- tx_if = args.get_arg('tx_if')
- rx_if = args.get_arg('rx_if')
+def dhcp_discover(tx_if, rx_if, tx_src_ip, tx_dst_ip, server_ip, proxy_ip,
+ client_mac):
+ """Send and check DHCP DISCOVER proxy packet."""
rxq = RxQueue(rx_if)
txq = TxQueue(tx_if)
- tx_src_ip = "0.0.0.0"
- tx_dst_ip = "255.255.255.255"
-
- server_ip = args.get_arg('server_ip')
- proxy_ip = args.get_arg('proxy_ip')
- client_mac = args.get_arg('client_mac')
-
sent_packets = []
dhcp_discover = Ether(src=client_mac, dst="ff:ff:ff:ff:ff:ff") / \
IP(src=tx_src_ip, dst=tx_dst_ip) / \
- UDP(sport=68, dport=67) / \
+ UDP(sport=UDP_SERVICES.bootpc, dport=UDP_SERVICES.bootps) / \
BOOTP(op=1,) / \
DHCP(options=[("message-type", "discover"),
"end"])
@@ -81,29 +72,22 @@ def dhcp_discover(args):
if ether[DHCP].options[0][1] != 1: # 1 - DISCOVER message
raise RuntimeError("DHCP DISCOVER message error.")
print "DHCP DISCOVER message OK."
- dhcp_offer(args, option_82)
+ return option_82
-def dhcp_offer(args, option_82):
- """Send DHCP OFFER packet."""
- rx_if = args.get_arg('tx_if')
- tx_if = args.get_arg('rx_if')
+def dhcp_offer(rx_if, tx_if, tx_dst_ip, server_ip, proxy_ip, client_ip,
+ server_mac, option_82):
+ """Send and check DHCP OFFER proxy packet."""
rxq = RxQueue(rx_if)
txq = TxQueue(tx_if)
- tx_dst_ip = "255.255.255.255"
- server_ip = args.get_arg('server_ip')
- server_mac = args.get_arg('server_mac')
- client_ip = args.get_arg('client_ip')
- proxy_ip = args.get_arg('proxy_ip')
-
sent_packets = []
dhcp_offer = Ether(src=server_mac, dst="ff:ff:ff:ff:ff:ff") / \
IP(src=server_ip, dst=tx_dst_ip) / \
- UDP(sport=67, dport=68) / \
+ UDP(sport=UDP_SERVICES.bootps, dport=UDP_SERVICES.bootpc) / \
BOOTP(op=2,
yiaddr=client_ip,
siaddr=server_ip) / \
@@ -148,29 +132,20 @@ def dhcp_offer(args, option_82):
if ether[DHCP].options[0][1] != 2: # 2 - OFFER message
raise RuntimeError("DHCP OFFER message error.")
print "DHCP OFFER message OK."
- dhcp_request(args)
-def dhcp_request(args):
- """Send DHCP REQUEST packet."""
-
- tx_if = args.get_arg('tx_if')
- rx_if = args.get_arg('rx_if')
+def dhcp_request(tx_if, rx_if, tx_src_ip, tx_dst_ip, server_ip, proxy_ip,
+ client_ip, client_mac):
+ """Send and check DHCP REQUEST proxy packet."""
rxq = RxQueue(rx_if)
txq = TxQueue(tx_if)
- tx_dst_ip = "255.255.255.255"
- server_ip = args.get_arg('server_ip')
- client_ip = args.get_arg('client_ip')
- client_mac = args.get_arg('client_mac')
- proxy_ip = args.get_arg('proxy_ip')
-
sent_packets = []
dhcp_request = Ether(src=client_mac, dst="ff:ff:ff:ff:ff:ff") / \
- IP(src="0.0.0.0", dst=tx_dst_ip) / \
- UDP(sport=68, dport=67) / \
+ IP(src=tx_src_ip, dst=tx_dst_ip) / \
+ UDP(sport=UDP_SERVICES.bootpc, dport=UDP_SERVICES.bootps) / \
BOOTP(op=1,
giaddr=proxy_ip,
siaddr=server_ip) / \
@@ -213,35 +188,26 @@ def dhcp_request(args):
if ether[DHCP].options[3][0] != 'relay_agent_Information': # option 82
raise RuntimeError("Relay agent information error.")
- option_82 = ether[DHCP].options[3][1]
if ether[DHCP].options[0][1] != 3: # 2 - REQUEST message
raise RuntimeError("DHCP REQUEST message error.")
print "DHCP REQUEST message: OK."
- dhcp_ack(args, option_82)
-
-def dhcp_ack(args, option_82):
- """Send DHCP ACK packet."""
- rx_if = args.get_arg('tx_if')
- tx_if = args.get_arg('rx_if')
+def dhcp_ack(rx_if, tx_if, tx_dst_ip, server_ip, proxy_ip, client_ip,
+ server_mac, option_82):
+ """Send and check DHCP ACK proxy packet."""
rxq = RxQueue(rx_if)
txq = TxQueue(tx_if)
- tx_dst_ip = "255.255.255.255"
- server_ip = args.get_arg('server_ip')
- server_mac = args.get_arg('server_mac')
- client_ip = args.get_arg('client_ip')
- proxy_ip = args.get_arg('proxy_ip')
lease_time = 43200 # 12 hours
sent_packets = []
dhcp_ack = Ether(src=server_mac, dst="ff:ff:ff:ff:ff:ff") / \
IP(src=server_ip, dst=tx_dst_ip) / \
- UDP(sport=67, dport=68) / \
+ UDP(sport=UDP_SERVICES.bootps, dport=UDP_SERVICES.bootpc) / \
BOOTP(op=2,
yiaddr=client_ip,
siaddr=server_ip) / \
@@ -294,12 +260,38 @@ def dhcp_ack(args, option_82):
def main():
- """Send DHCP messages."""
+ """Send DHCP proxy messages."""
args = TrafficScriptArg(['server_ip', 'server_mac', 'client_ip',
'client_mac', 'proxy_ip'])
- dhcp_discover(args)
+ tx_if = args.get_arg('tx_if')
+ rx_if = args.get_arg('rx_if')
+
+ tx_src_ip = "0.0.0.0"
+ tx_dst_ip = "255.255.255.255"
+
+ server_ip = args.get_arg('server_ip')
+ client_ip = args.get_arg('client_ip')
+ proxy_ip = args.get_arg('proxy_ip')
+ client_mac = args.get_arg('client_mac')
+ server_mac = args.get_arg('server_mac')
+
+ # DHCP DISCOVER
+ option_82 = dhcp_discover(tx_if, rx_if, tx_src_ip, tx_dst_ip, server_ip,
+ proxy_ip, client_mac)
+
+ # DHCP OFFER
+ dhcp_offer(tx_if, rx_if, tx_dst_ip, server_ip, proxy_ip, client_ip,
+ server_mac, option_82)
+
+ # DHCP REQUEST
+ dhcp_request(tx_if, rx_if, tx_src_ip, tx_dst_ip, server_ip, proxy_ip,
+ client_ip, client_mac)
+
+ # DHCP ACK
+ dhcp_ack(tx_if, rx_if, tx_dst_ip, server_ip, proxy_ip, client_ip,
+ server_mac, option_82)
sys.exit(0)