Vhost tests

Change-Id: I03722afe13722941e084bc01161f7c2af30e3cb1
Signed-off-by: Matej Klotton <mklotton@cisco.com>
(cherry picked from commit 0fc813b1694a6ae70b759e7ca96741f21f81b051)

2 files changed, 123 insertions, 0 deletions

diff --git a/resources/traffic_scripts/send_vxlan_check_vxlan.py b/resources/traffic_scripts/send_vxlan_check_vxlan.py
new file mode 100755
index 0000000000..3bf273d17a
--- /dev/null
+++ b/resources/traffic_scripts/send_vxlan_check_vxlan.py
@@ -0,0 +1,106 @@
+#!/usr/bin/env python
+# Copyright (c) 2016 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Traffic script that sends an IP ICMPv4/ICMPv6 packet from one interface to
+the other one. Dot1q or Dot1ad tagging of the ethernet frame can be set.
+"""
+
+import sys
+
+import vxlan
+
+from scapy.layers.inet import IP, UDP, Raw
+from scapy.layers.l2 import Ether
+from resources.libraries.python.PacketVerifier import RxQueue, TxQueue
+from resources.libraries.python.TrafficScriptArg import TrafficScriptArg
+
+
+def main():
+    """Send IP ICMPv4/ICMPv6 packet from one traffic generator interface to
+    the other one. Dot1q or Dot1ad tagging of the ethernet frame can be set.
+    """
+    args = TrafficScriptArg(['tx_src_mac', 'tx_dst_mac', 'tx_src_ip',
+                             'tx_dst_ip', 'tx_vni', 'rx_src_ip', 'rx_dst_ip',
+                             'rx_vni'])
+
+    tx_if = args.get_arg('tx_if')
+    rx_if = args.get_arg('rx_if')
+    tx_src_mac = args.get_arg('tx_src_mac')
+    tx_dst_mac = args.get_arg('tx_dst_mac')
+    tx_src_ip = args.get_arg('tx_src_ip')
+    tx_dst_ip = args.get_arg('tx_dst_ip')
+    tx_vni = args.get_arg('tx_vni')
+    rx_src_ip = args.get_arg('rx_src_ip')
+    rx_dst_ip = args.get_arg('rx_dst_ip')
+    rx_vni = args.get_arg('rx_vni')
+
+    rxq = RxQueue(rx_if)
+    txq = TxQueue(tx_if)
+
+    sent_packets = []
+
+    tx_pkt_p = (Ether(src='02:00:00:00:00:01', dst='02:00:00:00:00:02') /
+                IP(src='192.168.1.1', dst='192.168.1.2') /
+                UDP(sport=12345, dport=1234) /
+                Raw('rew data'))
+
+    pkt_raw = (Ether(src=tx_src_mac, dst=tx_dst_mac) /
+               IP(src=tx_src_ip, dst=tx_dst_ip) /
+               UDP(sport=23456) /
+               vxlan.VXLAN(vni=int(tx_vni)) /
+               tx_pkt_p)
+
+    # Send created packet on one interface and receive on the other
+    sent_packets.append(pkt_raw)
+    txq.send(pkt_raw)
+
+    ether = rxq.recv(2, ignore=sent_packets)
+
+    # Check whether received packet contains layers Ether, IP and VXLAN
+    if ether is None:
+        raise RuntimeError('Packet Rx timeout')
+    ip = ether.payload
+
+    if ip.src != rx_src_ip:
+        raise RuntimeError('IP src mismatch {} != {}'.format(ip.src, rx_src_ip))
+    if ip.dst != rx_dst_ip:
+        raise RuntimeError('IP dst mismatch {} != {}'.format(ip.dst, rx_dst_ip))
+    if ip.payload.dport != 4789:
+        raise RuntimeError('VXLAN UDP port mismatch {} != {}'.
+                           format(ip.payload.dport, 4789))
+    vxlan_pkt = ip.payload.payload
+
+    if int(vxlan_pkt.vni) != int(rx_vni):
+        raise RuntimeError('vxlan mismatch')
+    rx_pkt_p = vxlan_pkt.payload
+
+    if rx_pkt_p.src != tx_pkt_p.src:
+        raise RuntimeError('RX encapsulated MAC src mismatch {} != {}'.
+                           format(rx_pkt_p.src, tx_pkt_p.src))
+    if rx_pkt_p.dst != tx_pkt_p.dst:
+        raise RuntimeError('RX encapsulated MAC dst mismatch {} != {}'.
+                           format(rx_pkt_p.dst, tx_pkt_p.dst))
+    if rx_pkt_p['IP'].src != tx_pkt_p['IP'].src:
+        raise RuntimeError('RX encapsulated IP src mismatch {} != {}'.
+                           format(rx_pkt_p['IP'].src, tx_pkt_p['IP'].src))
+    if rx_pkt_p['IP'].dst != tx_pkt_p['IP'].dst:
+        raise RuntimeError('RX encapsulated IP dst mismatch {} != {}'.
+                           format(rx_pkt_p['IP'].dst, tx_pkt_p['IP'].dst))
+
+    # TODO: verify inner Ether()
+
+    sys.exit(0)
+
+if __name__ == "__main__":
+    main()
diff --git a/resources/traffic_scripts/vxlan.py b/resources/traffic_scripts/vxlan.py
new file mode 100644
index 0000000000..bf86f179a8
--- /dev/null
+++ b/resources/traffic_scripts/vxlan.py
@@ -0,0 +1,17 @@
+from scapy.fields import BitField, XByteField, X3BytesField
+from scapy.packet import Packet, bind_layers
+from scapy.layers.l2 import Ether
+from scapy.layers.inet import UDP
+
+
+class VXLAN(Packet):
+    name = "VXLAN"
+    fields_desc = [BitField("flags", 0x08000000, 32),
+                   X3BytesField("vni", 0),
+                   XByteField("reserved", 0x00)]
+
+    def mysummary(self):
+        return self.sprintf("VXLAN (vni=%VXLAN.vni%)")
+
+bind_layers(UDP, VXLAN, dport=4789)
+bind_layers(VXLAN, Ether)