pass
-class SpdFlowCacheTemplate(VppTestCase):
+class IPSecIPv4Fwd(VppTestCase):
+ """ Test IPSec by capturing and verifying IPv4 forwarded pkts """
@classmethod
def setUpConstants(cls):
- super(SpdFlowCacheTemplate, cls).setUpConstants()
- # Override this method with required cmdline parameters e.g.
- # cls.vpp_cmdline.extend(["ipsec", "{",
- # "ipv4-outbound-spd-flow-cache on",
- # "}"])
- # cls.logger.info("VPP modified cmdline is %s" % " "
- # .join(cls.vpp_cmdline))
+ super(IPSecIPv4Fwd, cls).setUpConstants()
def setUp(self):
- super(SpdFlowCacheTemplate, self).setUp()
+ super(IPSecIPv4Fwd, self).setUp()
# store SPD objects so we can remove configs on tear down
self.spd_objs = []
self.spd_policies = []
for pg in self.pg_interfaces:
pg.unconfig_ip4()
pg.admin_down()
- super(SpdFlowCacheTemplate, self).tearDown()
+ super(IPSecIPv4Fwd, self).tearDown()
def create_interfaces(self, num_ifs=2):
# create interfaces pg0 ... pg<num_ifs>
"Policy %s matched: %d pkts", str(spdEntry), matched_pkts)
self.assert_equal(pkt_count, matched_pkts)
+
+class SpdFlowCacheTemplate(IPSecIPv4Fwd):
+ @classmethod
+ def setUpConstants(cls):
+ super(SpdFlowCacheTemplate, cls).setUpConstants()
+ # Override this method with required cmdline parameters e.g.
+ # cls.vpp_cmdline.extend(["ipsec", "{",
+ # "ipv4-outbound-spd-flow-cache on",
+ # "}"])
+ # cls.logger.info("VPP modified cmdline is %s" % " "
+ # .join(cls.vpp_cmdline))
+
+ def setUp(self):
+ super(SpdFlowCacheTemplate, self).setUp()
+
+ def tearDown(self):
+ super(SpdFlowCacheTemplate, self).tearDown()
+
def get_spd_flow_cache_entries(self):
""" 'show ipsec spd' output:
ip4-outbound-spd-flow-cache-entries: 0
self.logger.info("\ncrc32 NOT supported:\n" + cpu_info)
return False
-
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
--- /dev/null
+import socket
+import unittest
+
+from util import ppp
+from framework import VppTestRunner
+from template_ipsec import IPSecIPv4Fwd
+
+"""
+When an IPSec SPD is configured on an interface, any inbound packets
+not matching inbound policies, or outbound packets not matching outbound
+policies, must be dropped by default as per RFC4301.
+
+This test uses simple IPv4 forwarding on interfaces with IPSec enabled
+to check if packets with no matching rules are dropped by default.
+
+The basic setup is a single SPD bound to two interfaces, pg0 and pg1.
+
+ ┌────┐ ┌────┐
+ │SPD1│ │SPD1│
+ ├────┤ ─────> ├────┤
+ │PG0 │ │PG1 │
+ └────┘ └────┘
+
+First, both inbound and outbound BYPASS policies are configured allowing
+traffic to pass from pg0 -> pg1.
+
+Packets are captured and verified at pg1.
+
+Then either the inbound or outbound policies are removed and we verify
+packets are dropped as expected.
+
+"""
+
+
+class IPSecInboundDefaultDrop(IPSecIPv4Fwd):
+ """ IPSec: inbound packets drop by default with no matching rule """
+ def test_ipsec_inbound_default_drop(self):
+ # configure two interfaces and bind the same SPD to both
+ self.create_interfaces(2)
+ self.spd_create_and_intf_add(1, self.pg_interfaces)
+ pkt_count = 5
+
+ # catch-all inbound BYPASS policy, all interfaces
+ inbound_policy = self.spd_add_rem_policy(
+ 1, None, None, socket.IPPROTO_UDP, is_out=0, priority=10,
+ policy_type="bypass", all_ips=True)
+
+ # outbound BYPASS policy allowing traffic from pg0->pg1
+ outbound_policy = self.spd_add_rem_policy(
+ 1, self.pg0, self.pg1, socket.IPPROTO_UDP,
+ is_out=1, priority=10, policy_type="bypass")
+
+ # create a packet stream pg0->pg1 + add to pg0
+ packets0 = self.create_stream(self.pg0, self.pg1, pkt_count)
+ self.pg0.add_stream(packets0)
+
+ # with inbound BYPASS rule at pg0, we expect to see forwarded
+ # packets on pg1
+ self.pg_interfaces[1].enable_capture()
+ self.pg_start()
+ cap1 = self.pg1.get_capture()
+ for packet in cap1:
+ try:
+ self.logger.debug(ppp("SPD - Got packet:", packet))
+ except Exception:
+ self.logger.error(
+ ppp("Unexpected or invalid packet:", packet))
+ raise
+ self.logger.debug("SPD: Num packets: %s", len(cap1.res))
+ # verify captures on pg1
+ self.verify_capture(self.pg0, self.pg1, cap1)
+ # verify policies matched correct number of times
+ self.verify_policy_match(pkt_count, inbound_policy)
+ self.verify_policy_match(pkt_count, outbound_policy)
+
+ # remove inbound catch-all BYPASS rule, traffic should now be dropped
+ self.spd_add_rem_policy( # inbound, all interfaces
+ 1, None, None, socket.IPPROTO_UDP, is_out=0, priority=10,
+ policy_type="bypass", all_ips=True, remove=True)
+
+ # create another packet stream pg0->pg1 + add to pg0
+ packets1 = self.create_stream(self.pg0, self.pg1, pkt_count)
+ self.pg0.add_stream(packets1)
+ self.pg_interfaces[1].enable_capture()
+ self.pg_start()
+ # confirm traffic has now been dropped
+ self.pg1.assert_nothing_captured("inbound pkts with no matching \
+ rules NOT dropped by default")
+ # both policies should not have matched any further packets
+ # since we've dropped at input stage
+ self.verify_policy_match(pkt_count, outbound_policy)
+ self.verify_policy_match(pkt_count, inbound_policy)
+
+
+class IPSecOutboundDefaultDrop(IPSecIPv4Fwd):
+ """ IPSec: outbound packets drop by default with no matching rule """
+ def test_ipsec_inbound_default_drop(self):
+ # configure two interfaces and bind the same SPD to both
+ self.create_interfaces(2)
+ self.spd_create_and_intf_add(1, self.pg_interfaces)
+ pkt_count = 5
+
+ # catch-all inbound BYPASS policy, all interfaces
+ inbound_policy = self.spd_add_rem_policy(
+ 1, None, None, socket.IPPROTO_UDP, is_out=0, priority=10,
+ policy_type="bypass", all_ips=True)
+
+ # outbound BYPASS policy allowing traffic from pg0->pg1
+ outbound_policy = self.spd_add_rem_policy(
+ 1, self.pg0, self.pg1, socket.IPPROTO_UDP,
+ is_out=1, priority=10, policy_type="bypass")
+
+ # create a packet stream pg0->pg1 + add to pg0
+ packets0 = self.create_stream(self.pg0, self.pg1, pkt_count)
+ self.pg0.add_stream(packets0)
+
+ # with outbound BYPASS rule allowing pg0->pg1, we expect to see
+ # forwarded packets on pg1
+ self.pg_interfaces[1].enable_capture()
+ self.pg_start()
+ cap1 = self.pg1.get_capture()
+ for packet in cap1:
+ try:
+ self.logger.debug(ppp("SPD - Got packet:", packet))
+ except Exception:
+ self.logger.error(
+ ppp("Unexpected or invalid packet:", packet))
+ raise
+ self.logger.debug("SPD: Num packets: %s", len(cap1.res))
+ # verify captures on pg1
+ self.verify_capture(self.pg0, self.pg1, cap1)
+ # verify policies matched correct number of times
+ self.verify_policy_match(pkt_count, inbound_policy)
+ self.verify_policy_match(pkt_count, outbound_policy)
+
+ # remove outbound rule
+ self.spd_add_rem_policy(
+ 1, self.pg0, self.pg1, socket.IPPROTO_UDP,
+ is_out=1, priority=10, policy_type="bypass",
+ remove=True)
+
+ # create another packet stream pg0->pg1 + add to pg0
+ packets1 = self.create_stream(self.pg0, self.pg1, pkt_count)
+ self.pg0.add_stream(packets1)
+ self.pg_interfaces[1].enable_capture()
+ self.pg_start()
+ # confirm traffic was dropped and not forwarded
+ self.pg1.assert_nothing_captured("outbound pkts with no matching \
+ rules NOT dropped by default")
+ # inbound rule should have matched twice the # of pkts now
+ self.verify_policy_match(pkt_count*2, inbound_policy)
+ # as dropped at outbound, outbound policy is the same
+ self.verify_policy_match(pkt_count, outbound_policy)
+
+if __name__ == '__main__':
+ unittest.main(testRunner=VppTestRunner)
1, self.pg2, self.pg0, socket.IPPROTO_UDP,
is_out=1, priority=10, policy_type="discard")
+ # interfaces bound to an SPD, will by default drop inbound
+ # traffic with no matching policies. add catch-all inbound
+ # bypass rule to SPD:
+ self.spd_add_rem_policy( # inbound, all interfaces
+ 1, None, None, socket.IPPROTO_UDP, is_out=0, priority=10,
+ policy_type="bypass", all_ips=True)
+
# check flow cache is empty (0 active elements) before sending traffic
self.verify_num_outbound_flow_cache_entries(0)
1, self.pg2, self.pg0, socket.IPPROTO_UDP,
is_out=1, priority=10, policy_type="discard")
+ # interfaces bound to an SPD, will by default drop inbound
+ # traffic with no matching policies. add catch-all inbound
+ # bypass rule to SPD:
+ self.spd_add_rem_policy( # inbound, all interfaces
+ 1, None, None, socket.IPPROTO_UDP, is_out=0, priority=10,
+ policy_type="bypass", all_ips=True)
+
# check flow cache is empty (0 active elements) before sending traffic
self.verify_num_outbound_flow_cache_entries(0)
1, self.pg2, self.pg0, socket.IPPROTO_UDP,
is_out=1, priority=10, policy_type="bypass")
+ # interfaces bound to an SPD, will by default drop inbound
+ # traffic with no matching policies. add catch-all inbound
+ # bypass rule to SPD:
+ self.spd_add_rem_policy( # inbound, all interfaces
+ 1, None, None, socket.IPPROTO_UDP, is_out=0, priority=10,
+ policy_type="bypass", all_ips=True)
+
# check flow cache is empty (0 active elements) before sending traffic
self.verify_num_outbound_flow_cache_entries(0)
Code Review / vpp.git / commitdiff