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authorVladislav Grishenko <themiron@yandex-team.ru>2022-12-04 15:02:03 +0500
committerMatthew Smith <mgsmith@netgate.com>2022-12-15 13:19:57 +0000
commit3abb32c6fe038d757493381b9ea19c19682ca026 (patch)
treec20bd11738527235a292b3302dbb7dc0e29f6eef /test/test_nat44_ei.py
parent243a0433ff05a37113d6890bbeb163bbea033687 (diff)
nat: disable nat44-ed/ei features on interface deletion
After deleting a sw interface with nat44 features, the next created sw interface will get the same sw_index reused and therefore will erroneously have the same nat features enabled. Type: fix Change-Id: I1d84f842ab7ab2a757668ae1a111efe67e1e924d Signed-off-by: Vladislav Grishenko <themiron@yandex-team.ru>
Diffstat (limited to 'test/test_nat44_ei.py')
-rw-r--r--test/test_nat44_ei.py55
1 files changed, 54 insertions, 1 deletions
diff --git a/test/test_nat44_ei.py b/test/test_nat44_ei.py
index 259c445ea5b..955dbb52547 100644
--- a/test/test_nat44_ei.py
+++ b/test/test_nat44_ei.py
@@ -9,7 +9,7 @@ from io import BytesIO
import scapy.compat
from framework import tag_fixme_debian11, is_distro_debian11
-from framework import VppTestCase, VppTestRunner
+from framework import VppTestCase, VppTestRunner, VppLoInterface
from ipfix import IPFIX, Set, Template, Data, IPFIXDecoder
from scapy.all import (
bind_layers,
@@ -4061,6 +4061,59 @@ class TestNAT44EI(MethodHolder):
# a nonzero default should be reported for user_sessions
self.assertNotEqual(nat44_ei_config.user_sessions, 0)
+ def test_delete_interface(self):
+ """NAT44EI delete nat interface"""
+
+ self.nat44_add_address(self.nat_addr)
+
+ interfaces = self.create_loopback_interfaces(4)
+
+ self.vapi.nat44_ei_interface_add_del_feature(
+ sw_if_index=interfaces[0].sw_if_index, is_add=1
+ )
+ flags = self.config_flags.NAT44_EI_IF_INSIDE
+ self.vapi.nat44_ei_interface_add_del_feature(
+ sw_if_index=interfaces[1].sw_if_index, flags=flags, is_add=1
+ )
+ flags |= self.config_flags.NAT44_EI_IF_OUTSIDE
+ self.vapi.nat44_ei_interface_add_del_feature(
+ sw_if_index=interfaces[2].sw_if_index, flags=flags, is_add=1
+ )
+ self.vapi.nat44_ei_add_del_output_interface(
+ sw_if_index=interfaces[3].sw_if_index, is_add=1
+ )
+
+ nat_sw_if_indices = [
+ i.sw_if_index
+ for i in self.vapi.nat44_ei_interface_dump()
+ + list(self.vapi.vpp.details_iter(self.vapi.nat44_ei_output_interface_get))
+ ]
+ self.assertEqual(len(nat_sw_if_indices), len(interfaces))
+
+ loopbacks = []
+ for i in interfaces:
+ # delete nat-enabled interface
+ self.assertIn(i.sw_if_index, nat_sw_if_indices)
+ i.remove_vpp_config()
+
+ # create interface with the same index
+ lo = VppLoInterface(self)
+ loopbacks.append(lo)
+ self.assertEqual(lo.sw_if_index, i.sw_if_index)
+
+ # check interface is not nat-enabled
+ nat_sw_if_indices = [
+ i.sw_if_index
+ for i in self.vapi.nat44_ei_interface_dump()
+ + list(
+ self.vapi.vpp.details_iter(self.vapi.nat44_ei_output_interface_get)
+ )
+ ]
+ self.assertNotIn(lo.sw_if_index, nat_sw_if_indices)
+
+ for i in loopbacks:
+ i.remove_vpp_config()
+
class TestNAT44Out2InDPO(MethodHolder):
"""NAT44EI Test Cases using out2in DPO"""