import unittest
from scapy.packet import Raw
-from scapy.layers.inet6 import IPv6, Ether, IP, UDP, ICMPv6PacketTooBig
-from scapy.layers.inet6 import ipv6nh, IPerror6
-from scapy.layers.inet import TCP, ICMP
-from scapy.data import ETH_P_IP, ETH_P_IPV6, ETH_P_ARP
+from scapy.layers.inet6 import IPv6, Ether, IP
+from scapy.layers.inet import TCP
-from framework import VppTestCase, VppTestRunner
-from vpp_object import VppObject
-from vpp_interface import VppInterface
+from framework import VppTestCase
+from asfframework import VppTestRunner
""" Test_gro is a subclass of VPPTestCase classes.
class TestGRO(VppTestCase):
- """ GRO Test Case """
+ """GRO Test Case"""
@classmethod
def setUpClass(self):
i.admin_down()
def test_gro(self):
- """ GRO test """
+ """GRO test"""
n_packets = 124
#
# Send 1500 bytes frame with gro disabled
#
- p4 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4,
- flags='DF') /
- TCP(sport=1234, dport=4321) /
- Raw(b'\xa5' * 1460))
+ p4 = (
+ Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+ / IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4, flags="DF")
+ / TCP(sport=1234, dport=4321)
+ / Raw(b"\xa5" * 1460)
+ )
rxs = self.send_and_expect(self.pg0, n_packets * p4, self.pg1)
for rx in rxs:
p = []
s = 0
for n in range(0, n_packets):
- p.append((Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IP(src=self.pg0.remote_ip4, dst=self.pg2.remote_ip4,
- flags='DF') /
- TCP(sport=1234, dport=4321, seq=s, ack=n, flags='A') /
- Raw(b'\xa5' * 1460)))
+ p.append(
+ (
+ Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+ / IP(src=self.pg0.remote_ip4, dst=self.pg2.remote_ip4, flags="DF")
+ / TCP(sport=1234, dport=4321, seq=s, ack=n, flags="A")
+ / Raw(b"\xa5" * 1460)
+ )
+ )
s += 1460
rxs = self.send_and_expect(self.pg0, p, self.pg2, n_rx=2)
self.assertEqual(rx[IP].len, 64280) # 1460 * 44 + 40 < 65536
self.assertEqual(rx[TCP].sport, 1234)
self.assertEqual(rx[TCP].dport, 4321)
- self.assertEqual(rx[TCP].ack, (44*i - 1))
+ self.assertEqual(rx[TCP].ack, (44 * i - 1))
- p4_temp = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
- IP(src=self.pg2.remote_ip4, dst=self.pg0.remote_ip4,
- flags='DF') /
- TCP(sport=1234, dport=4321, flags='F'))
+ p4_temp = (
+ Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac)
+ / IP(src=self.pg2.remote_ip4, dst=self.pg0.remote_ip4, flags="DF")
+ / TCP(sport=1234, dport=4321, flags="F")
+ )
- rxs = self.send_and_expect(self.pg2, 100*[p4_temp], self.pg0, n_rx=100)
+ rxs = self.send_and_expect(self.pg2, 100 * [p4_temp], self.pg0, n_rx=100)
rx_coalesce = self.pg2.get_capture(1, timeout=1)
rx0 = rx_coalesce[0]
self.assertEqual(rx[TCP].sport, 1234)
self.assertEqual(rx[TCP].dport, 4321)
-if __name__ == '__main__':
+ #
+ # Same test with IPv6
+ #
+ p = []
+ s = 0
+ for n in range(0, 88):
+ p.append(
+ (
+ Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+ / IPv6(src=self.pg0.remote_ip6, dst=self.pg2.remote_ip6)
+ / TCP(sport=1234, dport=4321, seq=s, ack=n, flags="A")
+ / Raw(b"\xa5" * 1460)
+ )
+ )
+ s += 1460
+ p[-1][TCP].flags = "AP" # push to flush second packet
+
+ rxs = self.send_and_expect(self.pg0, p, self.pg2, n_rx=2)
+
+ i = 0
+ for rx in rxs:
+ i += 1
+ self.assertEqual(rx[Ether].src, self.pg2.local_mac)
+ self.assertEqual(rx[Ether].dst, self.pg2.remote_mac)
+ self.assertEqual(rx[IPv6].src, self.pg0.remote_ip6)
+ self.assertEqual(rx[IPv6].dst, self.pg2.remote_ip6)
+ self.assertEqual(rx[IPv6].plen, 64260) # 1460 * 44 + 20 < 65536
+ self.assertEqual(rx[TCP].sport, 1234)
+ self.assertEqual(rx[TCP].dport, 4321)
+ self.assertEqual(rx[TCP].ack, (44 * i - 1))
+
+ #
+ # Send a series of 1500 bytes packets each followed by a packet with a
+ # PSH flag. Verify that GRO stops everytime a PSH flag is encountered
+ #
+ p = []
+ s = 0
+ for n in range(0, n_packets):
+ p.append(
+ (
+ Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+ / IP(src=self.pg0.remote_ip4, dst=self.pg2.remote_ip4, flags="DF")
+ / TCP(sport=1234, dport=4321, seq=s, ack=2 * n, flags="A")
+ / Raw(b"\xa5" * 1460)
+ )
+ )
+ s += 1460
+ p.append(
+ (
+ Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+ / IP(src=self.pg0.remote_ip4, dst=self.pg2.remote_ip4, flags="DF")
+ / TCP(sport=1234, dport=4321, seq=s, ack=2 * n + 1, flags="AP")
+ / Raw(b"\xa5" * 1340)
+ )
+ )
+ s += 1340
+
+ rxs = self.send_and_expect(self.pg0, p, self.pg2, n_rx=n_packets)
+
+ i = 0
+ for rx in rxs:
+ self.assertEqual(rx[Ether].src, self.pg2.local_mac)
+ self.assertEqual(rx[Ether].dst, self.pg2.remote_mac)
+ self.assertEqual(rx[IP].src, self.pg0.remote_ip4)
+ self.assertEqual(rx[IP].dst, self.pg2.remote_ip4)
+ self.assertEqual(rx[IP].len, 40 + 1460 + 1340)
+ self.assertEqual(rx[TCP].sport, 1234)
+ self.assertEqual(rx[TCP].dport, 4321)
+ self.assertEqual(rx[TCP].ack, (2 * i + 1))
+ i += 1
+
+ #
+ # Send a series of 1500 bytes packets each followed by a short packet
+ # with padding. Verify that GRO removes the padding and stops on short
+ # packets
+ #
+ p = []
+ s = 0
+ for n in range(0, n_packets):
+ i = self.pg0
+ p.append(
+ (
+ Ether(src=i.remote_mac, dst=i.local_mac)
+ / IP(src=i.remote_ip4, dst=self.pg2.remote_ip4, flags="DF")
+ / TCP(sport=1234, dport=4321, seq=s, ack=2 * n, flags="A")
+ / Raw(b"\xa5" * 1459)
+ )
+ )
+ s += 1459
+ p2 = (
+ Ether(src=i.remote_mac, dst=i.local_mac)
+ / IP(src=i.remote_ip4, dst=self.pg2.remote_ip4, flags="DF", len=41)
+ / TCP(sport=1234, dport=4321, seq=s, ack=2 * n + 1, flags="A")
+ / Raw(b"\xa5")
+ )
+ # first compute csum of pkt w/o padding to work around scapy bug
+ p2 = Ether(bytes(p2))
+ p.append(p2 / Raw(b"\xa5" * 5)) # 1 byte data + 5 bytes padding
+ s += 1
+
+ rxs = self.send_and_expect(self.pg0, p, self.pg2, n_rx=n_packets)
+
+ i = 0
+ for rx in rxs:
+ self.assertEqual(rx[Ether].src, self.pg2.local_mac)
+ self.assertEqual(rx[Ether].dst, self.pg2.remote_mac)
+ self.assertEqual(rx[IP].src, self.pg0.remote_ip4)
+ self.assertEqual(rx[IP].dst, self.pg2.remote_ip4)
+ self.assertEqual(rx[IP].len, 40 + 1459 + 1)
+ self.assertEqual(rx[TCP].sport, 1234)
+ self.assertEqual(rx[TCP].dport, 4321)
+ self.assertEqual(rx[TCP].ack, (2 * i + 1))
+ i += 1
+
+
+if __name__ == "__main__":
unittest.main(testRunner=VppTestRunner)
Code Review / vpp.git / blobdiff