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ipsec: handle UDP keepalives

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Type: feature

Change-Id: I87cc1168466f267e8c4bbec318401982f4bdf03a
Signed-off-by: Neale Ranns <nranns@cisco.com>
This commit is contained in:
Neale Ranns
2019-07-16 06:19:35 -07:00
parent 37dab437be
commit 41afb33efe
11 changed files with 360 additions and 47 deletions
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19
test/template_ipsec.py
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@ -558,6 +558,8 @@ class IpsecTun4(object):
def verify_encrypted(self, p, sa, rxs):
decrypt_pkts = []
for rx in rxs:
if p.nat_header:
self.assertEqual(rx[UDP].dport, 4500)
self.assert_packet_checksums_valid(rx)
self.assertEqual(len(rx) - len(Ether()), rx[IP].len)
try:
@ -642,6 +644,23 @@ class IpsecTun4(object):
self.verify_counters4(p, count)
def verify_keepalive(self, p):
pkt = (Ether(src=self.tun_if.remote_mac, dst=self.tun_if.local_mac) /
IP(src=p.remote_tun_if_host, dst=self.tun_if.local_ip4) /
UDP(sport=333, dport=4500) /
Raw(0xff))
self.send_and_assert_no_replies(self.tun_if, pkt*31)
self.assert_error_counter_equal(
'/err/%s/NAT Keepalive' % self.tun4_input_node, 31)
pkt = (Ether(src=self.tun_if.remote_mac, dst=self.tun_if.local_mac) /
IP(src=p.remote_tun_if_host, dst=self.tun_if.local_ip4) /
UDP(sport=333, dport=4500) /
Raw(0xfe))
self.send_and_assert_no_replies(self.tun_if, pkt*31)
self.assert_error_counter_equal(
'/err/%s/Too Short' % self.tun4_input_node, 31)
class IpsecTun4Tests(IpsecTun4):
""" UT test methods for Tunnel v4 """