diff options
Diffstat (limited to 'test/test_ip4.py')
| -rw-r--r-- | test/test_ip4.py | 125 |
1 files changed, 124 insertions, 1 deletions
diff --git a/test/test_ip4.py b/test/test_ip4.py index 79af5492e18..ed364b62cbb 100644 --- a/test/test_ip4.py +++ b/test/test_ip4.py @@ -9,7 +9,7 @@ from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpMRoute, \ VppMRoutePath, MRouteItfFlags, MRouteEntryFlags from scapy.packet import Raw -from scapy.layers.l2 import Ether, Dot1Q +from scapy.layers.l2 import Ether, Dot1Q, ARP from scapy.layers.inet import IP, UDP, ICMP, icmptypes, icmpcodes from util import ppp @@ -643,5 +643,128 @@ class TestIPDisabled(VppTestCase): self.send_and_assert_no_replies(self.pg1, pm, "IP disabled") +class TestIPSubNets(VppTestCase): + """ IPv4 Subnets """ + + def setUp(self): + super(TestIPSubNets, self).setUp() + + # create a 2 pg interfaces + self.create_pg_interfaces(range(2)) + + # pg0 we will use to experiemnt + self.pg0.admin_up() + + # pg1 is setup normally + self.pg1.admin_up() + self.pg1.config_ip4() + self.pg1.resolve_arp() + + def tearDown(self): + super(TestIPSubNets, self).tearDown() + for i in self.pg_interfaces: + i.admin_down() + + def send_and_assert_no_replies(self, intf, pkts, remark): + 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_sub_nets(self): + """ IP Sub Nets """ + + # + # Configure a covering route to forward so we know + # when we are dropping + # + cover_route = VppIpRoute(self, "10.0.0.0", 8, + [VppRoutePath(self.pg1.remote_ip4, + self.pg1.sw_if_index)]) + cover_route.add_vpp_config() + + p = (Ether(src=self.pg1.remote_mac, + dst=self.pg1.local_mac) / + IP(dst="10.10.10.10", src=self.pg0.local_ip4) / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + self.pg1.add_stream(p) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + rx = self.pg1.get_capture(1) + + # + # Configure some non-/24 subnets on an IP interface + # + ip_addr_n = socket.inet_pton(socket.AF_INET, "10.10.10.10") + + self.vapi.sw_interface_add_del_address(self.pg0.sw_if_index, + ip_addr_n, + 16) + + pn = (Ether(src=self.pg1.remote_mac, + dst=self.pg1.local_mac) / + IP(dst="10.10.0.0", src=self.pg0.local_ip4) / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + pb = (Ether(src=self.pg1.remote_mac, + dst=self.pg1.local_mac) / + IP(dst="10.10.255.255", src=self.pg0.local_ip4) / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + self.send_and_assert_no_replies(self.pg1, pn, "IP Network address") + self.send_and_assert_no_replies(self.pg1, pb, "IP Broadcast address") + + # remove the sub-net and we are forwarding via the cover again + self.vapi.sw_interface_add_del_address(self.pg0.sw_if_index, + ip_addr_n, + 16, + is_add=0) + self.pg1.add_stream(pn) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + rx = self.pg1.get_capture(1) + self.pg1.add_stream(pb) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + rx = self.pg1.get_capture(1) + + # + # A /31 is a special case where the 'other-side' is an attached host + # packets to that peer generate ARP requests + # + ip_addr_n = socket.inet_pton(socket.AF_INET, "10.10.10.10") + + self.vapi.sw_interface_add_del_address(self.pg0.sw_if_index, + ip_addr_n, + 31) + + pn = (Ether(src=self.pg1.remote_mac, + dst=self.pg1.local_mac) / + IP(dst="10.10.10.11", src=self.pg0.local_ip4) / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + self.pg1.add_stream(pn) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + rx = self.pg0.get_capture(1) + rx[ARP] + + # remove the sub-net and we are forwarding via the cover again + self.vapi.sw_interface_add_del_address(self.pg0.sw_if_index, + ip_addr_n, + 31, + is_add=0) + self.pg1.add_stream(pn) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + rx = self.pg1.get_capture(1) + + if __name__ == '__main__': unittest.main(testRunner=VppTestRunner) |