diff options
Diffstat (limited to 'test/test_mpls.py')
| -rw-r--r-- | test/test_mpls.py | 56 |
1 files changed, 55 insertions, 1 deletions
diff --git a/test/test_mpls.py b/test/test_mpls.py index 4cc7a0759f2..d94676b67da 100644 --- a/test/test_mpls.py +++ b/test/test_mpls.py @@ -18,7 +18,8 @@ import scapy.compat from scapy.packet import Raw from scapy.layers.l2 import Ether, ARP from scapy.layers.inet import IP, UDP, ICMP -from scapy.layers.inet6 import IPv6, ICMPv6TimeExceeded, ICMPv6EchoRequest +from scapy.layers.inet6 import IPv6, ICMPv6TimeExceeded, ICMPv6EchoRequest, \ + ICMPv6PacketTooBig from scapy.contrib.mpls import MPLS NUM_PKTS = 67 @@ -425,6 +426,31 @@ class TestMPLS(VppTestCase): except: raise + def verify_capture_fragmented_labelled_ip6(self, src_if, capture, sent, + mpls_labels, ip_ttl=None): + try: + capture = verify_filter(capture, sent) + + for i in range(len(capture)): + tx = sent[0] + rx = capture[i] + tx_ip = tx[IPv6] + rx.show() + rx_ip = IPv6(rx[MPLS].payload) + rx_ip.show() + + verify_mpls_stack(self, rx, mpls_labels) + + self.assertEqual(rx_ip.src, tx_ip.src) + self.assertEqual(rx_ip.dst, tx_ip.dst) + if not ip_ttl: + # IP processing post pop has decremented the hop-limit + self.assertEqual(rx_ip.hlim + 1, tx_ip.hlim) + else: + self.assertEqual(rx_ip.hlim, ip_ttl) + except: + raise + def test_swap(self): """ MPLS label swap tests """ @@ -908,6 +934,11 @@ class TestMPLS(VppTestCase): self.pg0.sw_if_index, labels=[VppMplsLabel(32)])]) route_10_0_0_1.add_vpp_config() + route_1000_1 = VppIpRoute(self, "1000::1", 128, + [VppRoutePath(self.pg0.remote_ip6, + self.pg0.sw_if_index, + labels=[VppMplsLabel(32)])]) + route_1000_1.add_vpp_config() # # a stream that matches the route for 10.0.0.1 @@ -924,6 +955,29 @@ class TestMPLS(VppTestCase): self.verify_capture_fragmented_labelled_ip4(self.pg0, rx, tx, [VppMplsLabel(32)]) + # packets with DF bit set generate ICMP + for t in tx: + t[IP].flags = 'DF' + rxs = self.send_and_expect_some(self.pg0, tx, self.pg0) + + for rx in rxs: + rx[ICMP].code = "fragmentation-needed" + + self.assertEqual(self.statistics.get_err_counter( + "/err/mpls-frag/can't fragment this packet"), + len(tx)) + # + # a stream that matches the route for 1000::1/128 + # PG0 is in the default table + # + tx = self.create_stream_ip6(self.pg0, "1000::1") + for i in range(0, 257): + self.extend_packet(tx[i], 10000) + + rxs = self.send_and_expect_some(self.pg0, tx, self.pg0) + for rx in rxs: + rx[ICMPv6PacketTooBig].mtu = 9000 + # # cleanup # |