from scapy.layers.inet6 import IPv6, Ether, IP, UDP, ICMPv6PacketTooBig
from scapy.layers.inet import ICMP
from framework import VppTestCase, VppTestRunner
-from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto
+from vpp_ip import DpoProto
+from vpp_ip_route import VppIpRoute, VppRoutePath
from socket import AF_INET, AF_INET6, inet_pton
import StringIO
cls.create_pg_interfaces(range(2))
cls.interfaces = list(cls.pg_interfaces)
- def setUp(cls):
- super(TestMTU, cls).setUp()
- for i in cls.interfaces:
+ def setUp(self):
+ super(TestMTU, self).setUp()
+ for i in self.interfaces:
i.admin_up()
i.config_ip4()
i.config_ip6()
# n.show2()
self.validate_bytes(str(p[1]), icmp4_reply)
- '''
# Now with DF off. Expect fragments.
# First go with 1500 byte packets.
p_payload = UDP(sport=1234, dport=1234) / self.payload(
p4 = p_ether / p_ip4 / p_payload
p4.flags = 0
p4_reply = p_ip4 / p_payload
- p4_reply.ttl = 62 # check this
+ p4_reply.ttl = 62 # check this
p4_reply.flags = 0
p4_reply.id = 256
self.pg_enable_capture()
self.pg0.add_stream(p4*1)
self.pg_start()
rx = self.pg1.get_capture(3)
- print('RX', len(rx))
reass_pkt = reassemble(rx)
self.validate(reass_pkt, p4_reply)
+
'''
# Now what happens with a 9K frame
- '''
p_payload = UDP(sport=1234, dport=1234) / self.payload(
current_mtu - 20 - 8)
p4 = p_ether / p_ip4 / p_payload
p4_reply.show2()
self.validate(reass_pkt, p4_reply)
'''
+
# Reset MTU
self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
[current_mtu, 0, 0, 0])
p_icmp6 = ICMPv6PacketTooBig(mtu=1280, cksum=0x4c7a)
icmp6_reply = (IPv6(src=self.pg0.local_ip6,
dst=self.pg0.remote_ip6,
- hlim=254, plen=1240) /
+ hlim=255, plen=1240) /
p_icmp6 / p_ip6 / p_payload)
icmp6_reply[2].hlim -= 1
n = icmp6_reply.__class__(str(icmp6_reply))
s = str(icmp6_reply)
- icmp6_reply = s[0:1280]
+ icmp6_reply_str = s[0:1280]
rx = self.send_and_expect(self.pg0, p6*9, self.pg0)
for p in rx:
- self.validate_bytes(str(p[1]), icmp6_reply)
+ self.validate_bytes(str(p[1]), icmp6_reply_str)
# Reset MTU
self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,