X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=GPL%2Ftraffic_scripts%2Fipsec_interface.py;h=e6e90a25988a595265f4720eddd910283118785e;hp=4b7d758be5d0a6a7dd5ad1a0a795ebf859785315;hb=9f7e749f98f1437b90647749501d43b02a2be5eb;hpb=79f5ba9bf7656972dd988508eff9465562dde42c

diff --git a/GPL/traffic_scripts/ipsec_interface.py b/GPL/traffic_scripts/ipsec_interface.py
index 4b7d758be5..e6e90a2598 100644
--- a/GPL/traffic_scripts/ipsec_interface.py
+++ b/GPL/traffic_scripts/ipsec_interface.py
@@ -1,11 +1,21 @@
 #!/usr/bin/env python3
 
-# Copyright (c) 2020 Cisco and/or its affiliates.
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
+# Copyright (c) 2022 Cisco and/or its affiliates.
+#
+# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+#
+# Licensed under the Apache License 2.0 or
+# GNU General Public License v2.0 or later;  you may not use this file
+# except in compliance with one of these Licenses. You
+# may obtain a copy of the Licenses at:
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
+#     https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html
+#
+# Note: If this file is linked with Scapy, which is GPLv2+, your use of it
+# must be under GPLv2+.  If at any point in the future it is no longer linked
+# with Scapy (or other GPLv2+ licensed software), you are free to choose
+# Apache 2.
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
@@ -19,7 +29,7 @@ import sys
 
 from ipaddress import ip_address
 from scapy.layers.inet import IP
-from scapy.layers.inet6 import IPv6, ICMPv6ND_NS
+from scapy.layers.inet6 import IPv6, ICMPv6ND_NS, ICMPv6MLReport2, ICMPv6ND_RA
 from scapy.layers.ipsec import SecurityAssociation, ESP
 from scapy.layers.l2 import Ether
 from scapy.packet import Raw
@@ -201,19 +211,18 @@ def main():
     sa_in = SecurityAssociation(
         ESP, spi=l_spi, crypt_algo=crypto_alg,
         crypt_key=crypto_key.encode(encoding=u"utf-8"), auth_algo=integ_alg,
-        auth_key=integ_key.encode(encoding=u"utf-8"),
-        tunnel_header=tunnel_in
+        auth_key=integ_key.encode(encoding=u"utf-8"), tunnel_header=tunnel_in
     )
 
     sa_out = SecurityAssociation(
         ESP, spi=r_spi, crypt_algo=crypto_alg,
         crypt_key=crypto_key.encode(encoding=u"utf-8"), auth_algo=integ_alg,
-        auth_key=integ_key.encode(encoding=u"utf-8"),
-        tunnel_header=tunnel_out
+        auth_key=integ_key.encode(encoding=u"utf-8"), tunnel_header=tunnel_out
     )
 
     sent_packets = list()
-    tx_pkt_send = (Ether(src=tx_src_mac, dst=tx_dst_mac) / ip_pkt)
+    tx_pkt_send = (
+        Ether(src=tx_src_mac, dst=tx_dst_mac) / ip_pkt)
     tx_pkt_send /= Raw()
     size_limit = 78 if ip_layer == IPv6 else 64
     if len(tx_pkt_send) < size_limit:
@@ -230,23 +239,30 @@ def main():
         if rx_pkt_recv.haslayer(ICMPv6ND_NS):
             # read another packet in the queue if the current one is ICMPv6ND_NS
             continue
-        else:
-            # otherwise process the current packet
-            break
+        if rx_pkt_recv.haslayer(ICMPv6MLReport2):
+            # read another packet in the queue if the current one is
+            # ICMPv6MLReport2
+            continue
+        if rx_pkt_recv.haslayer(ICMPv6ND_RA):
+            # read another packet in the queue if the current one is
+            # ICMPv6ND_RA
+            continue
+
+        # otherwise process the current packet
+        break
 
     check_ipsec(
         rx_pkt_recv, ip_layer, rx_src_mac, rx_dst_mac, src_tun, dst_tun, src_ip,
         dst_ip, sa_in
     )
 
-    ip_pkt = ip_layer(src=dst_ip, dst=src_ip, proto=61) if ip_layer == IP \
+    rx_ip_pkt = ip_layer(src=dst_ip, dst=src_ip, proto=61) if ip_layer == IP \
         else ip_layer(src=dst_ip, dst=src_ip)
-    ip_pkt /= Raw()
-    if len(ip_pkt) < (size_limit - 14):
-        ip_pkt[Raw].load += (b"\0" * (size_limit - 14 - len(ip_pkt)))
-    e_pkt = sa_out.encrypt(ip_pkt)
-    rx_pkt_send = (Ether(src=rx_dst_mac, dst=rx_src_mac) /
-                   e_pkt)
+    rx_ip_pkt /= Raw()
+    if len(rx_ip_pkt) < (size_limit - 14):
+        rx_ip_pkt[Raw].load += (b"\0" * (size_limit - 14 - len(rx_ip_pkt)))
+    rx_pkt_send = (
+        Ether(src=rx_dst_mac, dst=rx_src_mac) / sa_out.encrypt(rx_ip_pkt))
     rx_txq.send(rx_pkt_send)
 
     while True:
@@ -258,13 +274,18 @@ def main():
         if tx_pkt_recv.haslayer(ICMPv6ND_NS):
             # read another packet in the queue if the current one is ICMPv6ND_NS
             continue
-        else:
-            # otherwise process the current packet
-            break
+        if tx_pkt_recv.haslayer(ICMPv6MLReport2):
+            # read another packet in the queue if the current one is
+            # ICMPv6MLReport2
+            continue
+        if tx_pkt_recv.haslayer(ICMPv6ND_RA):
+            # read another packet in the queue if the current one is
+            # ICMPv6ND_RA
+            continue
 
-    check_ip(tx_pkt_recv, ip_layer, tx_dst_mac, tx_src_mac, dst_ip, src_ip)
+        break
 
-    sys.exit(0)
+    check_ip(tx_pkt_recv, ip_layer, tx_dst_mac, tx_src_mac, dst_ip, src_ip)
 
 
 if __name__ == u"__main__":