ip: add classifier-based ACLs support on ip punt
This feature allows one to add classifier-based ACLs on packets punted
from the ip infra, eg. to only whitelist specific sender(s).
Type: feature
Change-Id: Idab37b188583efbca980038875fc3e540cb2e880
Signed-off-by: Benoît Ganne <bganne@cisco.com>
diff --git a/test/test_classifier.py b/test/test_classifier.py
index 1c7fb4c..74851f9 100644
--- a/test/test_classifier.py
+++ b/test/test_classifier.py
@@ -13,6 +13,7 @@
from template_classifier import TestClassifier, VarMask, VarMatch
from vpp_ip_route import VppIpRoute, VppRoutePath
from vpp_ip import INVALID_INDEX
+from vpp_papi import VppEnum
# Tests split to different test case classes because of issue reported in
@@ -843,5 +844,81 @@
# and the table should be gone.
self.assertFalse(self.verify_vrf(self.pbr_vrfid))
+
+class TestClassifierPunt(TestClassifier):
+ """ Classifier punt Test Case """
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestClassifierPunt, cls).setUpClass()
+
+ @classmethod
+ def tearDownClass(cls):
+ super(TestClassifierPunt, cls).tearDownClass()
+
+ def test_punt_udp(self):
+ """ IPv4/UDP protocol punt ACL test
+
+ Test scenario for basic punt ACL with UDP protocol
+ - Create IPv4 stream for pg0 -> pg1 interface.
+ - Create punt ACL with UDP IP protocol.
+ - Send and verify received packets on pg1 interface.
+ """
+
+ sport = 6754
+ dport = 17923
+
+ key = 'ip4_udp_punt'
+ self.create_classify_table(
+ key,
+ self.build_ip_mask(
+ src_ip='ffffffff',
+ proto='ff',
+ src_port='ffff'))
+ table_index = self.acl_tbl_idx.get(key)
+ self.vapi.punt_acl_add_del(ip4_table_index=table_index)
+ self.acl_active_table = key
+
+ # punt udp packets to dport received on pg0 through pg1
+ self.vapi.set_punt(
+ is_add=1,
+ punt={
+ 'type': VppEnum.vl_api_punt_type_t.PUNT_API_TYPE_L4,
+ 'punt': {
+ 'l4': {
+ 'af': VppEnum.vl_api_address_family_t.ADDRESS_IP4,
+ 'protocol': VppEnum.vl_api_ip_proto_t.IP_API_PROTO_UDP,
+ 'port': dport,
+ }}})
+ self.vapi.ip_punt_redirect(punt={
+ 'rx_sw_if_index': self.pg0.sw_if_index,
+ 'tx_sw_if_index': self.pg1.sw_if_index,
+ 'nh': self.pg1.remote_ip4,
+ })
+
+ pkts = [(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+ UDP(sport=sport, dport=dport) /
+ Raw('\x17' * 100))] * 2
+
+ # allow a session but not matching the stream: expect to drop
+ self.create_classify_session(
+ table_index,
+ self.build_ip_match(src_ip=self.pg0.remote_ip4,
+ proto=socket.IPPROTO_UDP, src_port=sport + 10))
+ self.send_and_assert_no_replies(self.pg0, pkts)
+
+ # allow a session matching the stream: expect to pass
+ self.create_classify_session(
+ table_index,
+ self.build_ip_match(src_ip=self.pg0.remote_ip4,
+ proto=socket.IPPROTO_UDP, src_port=sport))
+ self.send_and_expect_only(self.pg0, pkts, self.pg1)
+
+ # cleanup
+ self.acl_active_table = ''
+ self.vapi.punt_acl_add_del(ip4_table_index=table_index, is_add=0)
+
+
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)