From b728a3c8b74127e9a7decd8ecb7dc6cbefb0ab84 Mon Sep 17 00:00:00 2001 From: Alexander Chernavin Date: Wed, 5 Feb 2020 09:05:06 -0500 Subject: map: honor icmp6-unreachables param in map-t With this commit, send ICMPv6 unreachable messages back if security check fails and icmp6-unreachables param enabled in MAP-T. Type: fix Change-Id: I9a8869df7763c764a1672e3faa1fde8dc13ec85a Signed-off-by: Alexander Chernavin --- src/plugins/map/test/test_map.py | 32 +++++++++++++++++++++++++++++++- 1 file changed, 31 insertions(+), 1 deletion(-) (limited to 'src/plugins/map/test/test_map.py') diff --git a/src/plugins/map/test/test_map.py b/src/plugins/map/test/test_map.py index 123fb547a59..c64341bfc19 100644 --- a/src/plugins/map/test/test_map.py +++ b/src/plugins/map/test/test_map.py @@ -13,7 +13,7 @@ from scapy.layers.l2 import Ether from scapy.packet import Raw from scapy.layers.inet import IP, UDP, ICMP, TCP from scapy.layers.inet6 import IPv6, ICMPv6TimeExceeded, IPv6ExtHdrFragment, \ - ICMPv6EchoRequest + ICMPv6EchoRequest, ICMPv6DestUnreach class TestMAP(VppTestCase): @@ -691,6 +691,36 @@ class TestMAP(VppTestCase): for p in rx: self.validate(p[1], p4_translated) + # TCP MSS clamping cleanup + self.vapi.map_param_set_tcp(0) + + # Enable icmp6 param to get back ICMPv6 unreachable messages in case + # of security check fails + self.vapi.map_param_set_icmp6(enable_unreachable=1) + + # Send back an IPv6 packet that will be droppped due to security + # check fail + p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) + p_ip6_sec_check_fail = IPv6(src='2001:db8:1fe::c0a8:1:f', + dst='1234:5678:90ab:cdef:ac:1001:200:0') + payload = TCP(sport=0xabcd, dport=0xabcd) + p6 = (p_ether6 / p_ip6_sec_check_fail / payload) + + self.pg_send(self.pg1, p6*1) + self.pg0.get_capture(0, timeout=1) + rx = self.pg1.get_capture(1) + + icmp6_reply = (IPv6(hlim=255, src=self.pg1.local_ip6, + dst='2001:db8:1fe::c0a8:1:f') / + ICMPv6DestUnreach(code=5) / + p_ip6_sec_check_fail / payload) + + for p in rx: + self.validate(p[1], icmp6_reply) + + # ICMPv6 unreachable messages cleanup + self.vapi.map_param_set_icmp6(enable_unreachable=0) + def test_map_t_ip6_psid(self): """ MAP-T v6->v4 PSID validation""" -- cgit 1.2.3-korg