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authorNeale Ranns <nranns@cisco.com>2017-07-31 02:30:50 -0700
committerDamjan Marion <dmarion.lists@gmail.com>2017-10-10 16:42:39 +0000
commitd91c1dbdb31f80db7d967f2f57c43d0a81d65297 (patch)
treec7d323cd6980b6fc7c5d96157607a07e51efa468 /test/test_ip4.py
parent268e64e312257b0ab36e0d5b9124cc3f2a1841a7 (diff)
punt and drop features:
- new IPv4 and IPv6 feature arcs on the punt and drop nodes - new features: - redirect punted traffic to an interface and nexthop - police punted traffic. Change-Id: I53be8bf4e06545add8a3619e462de5ffedd0a95c Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'test/test_ip4.py')
-rw-r--r--test/test_ip4.py112
1 files changed, 111 insertions, 1 deletions
diff --git a/test/test_ip4.py b/test/test_ip4.py
index 55d16735a01..5bd50ce3ea4 100644
--- a/test/test_ip4.py
+++ b/test/test_ip4.py
@@ -11,7 +11,7 @@ from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpMRoute, \
from scapy.packet import Raw
from scapy.layers.l2 import Ether, Dot1Q, ARP
-from scapy.layers.inet import IP, UDP, ICMP, icmptypes, icmpcodes
+from scapy.layers.inet import IP, UDP, TCP, ICMP, icmptypes, icmpcodes
from util import ppp
from scapy.contrib.mpls import MPLS
@@ -1009,5 +1009,115 @@ class TestIPVlan0(VppTestCase):
self.send_and_expect(self.pg0, pkts, self.pg1)
+class TestIPPunt(VppTestCase):
+ """ IPv4 Punt Police/Redirect """
+
+ def setUp(self):
+ super(TestIPPunt, self).setUp()
+
+ self.create_pg_interfaces(range(2))
+
+ for i in self.pg_interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+
+ def tearDown(self):
+ super(TestIPPunt, self).tearDown()
+ for i in self.pg_interfaces:
+ i.unconfig_ip4()
+ i.admin_down()
+
+ def send_and_expect(self, input, pkts, output):
+ self.vapi.cli("clear trace")
+ input.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ rx = output.get_capture(len(pkts))
+ return rx
+
+ def send_and_assert_no_replies(self, intf, pkts, remark):
+ self.vapi.cli("clear trace")
+ intf.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ for i in self.pg_interfaces:
+ i.get_capture(0)
+ i.assert_nothing_captured(remark=remark)
+
+ def test_ip_punt(self):
+ """ IP punt police and redirect """
+
+ p = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+ TCP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100))
+
+ pkts = p * 1025
+
+ #
+ # Configure a punt redirect via pg1.
+ #
+ nh_addr = socket.inet_pton(socket.AF_INET,
+ self.pg1.remote_ip4)
+ self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
+ self.pg1.sw_if_index,
+ nh_addr)
+
+ self.send_and_expect(self.pg0, pkts, self.pg1)
+
+ #
+ # add a policer
+ #
+ policer = self.vapi.policer_add_del("ip4-punt", 400, 0, 10, 0,
+ rate_type=1)
+ self.vapi.ip_punt_police(policer.policer_index)
+
+ self.vapi.cli("clear trace")
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ #
+ # the number of packet recieved should be greater than 0,
+ # but not equal to the number sent, since some were policed
+ #
+ rx = self.pg1._get_capture(1)
+ self.assertTrue(len(rx) > 0)
+ self.assertTrue(len(rx) < len(pkts))
+
+ #
+ # remove the poilcer. back to full rx
+ #
+ self.vapi.ip_punt_police(policer.policer_index, is_add=0)
+ self.vapi.policer_add_del("ip4-punt", 400, 0, 10, 0,
+ rate_type=1, is_add=0)
+ self.send_and_expect(self.pg0, pkts, self.pg1)
+
+ #
+ # remove the redirect. expect full drop.
+ #
+ self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
+ self.pg1.sw_if_index,
+ nh_addr,
+ is_add=0)
+ self.send_and_assert_no_replies(self.pg0, pkts,
+ "IP no punt config")
+
+ #
+ # Add a redirect that is not input port selective
+ #
+ self.vapi.ip_punt_redirect(0xffffffff,
+ self.pg1.sw_if_index,
+ nh_addr)
+ self.send_and_expect(self.pg0, pkts, self.pg1)
+
+ self.vapi.ip_punt_redirect(0xffffffff,
+ self.pg1.sw_if_index,
+ nh_addr,
+ is_add=0)
+
+
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)