tests: add ping flood test

Signed-off-by: Christian Hopps <[email protected]>

tests/flood/common

@@ -0,0 +1 @@
+../common

tests/flood/munet.yaml

@@ -0,0 +1,44 @@
+topology:
+  ipv6-enable: true
+  networks-autonumber: true
+  dns-network: "mgmt0"
+  networks:
+    - name: mgmt0
+      ip: 192.168.0.254/24
+      ipv6: "fd00::ff/64"
+      nat: true
+    - name: net0
+      ip: 10.0.0.0/24
+      ipv6: "fc00::/64"
+    - name: net1
+      ip: 10.0.1.0/24
+      ipv6: "fc00:0:0:1::/64"
+    - name: net2
+      ip: 10.0.2.0/24
+      ipv6: "fc00:0:0:2::/64"
+  nodes:
+    - name: h1
+      connections:
+        - to: mgmt0
+        - to: net0
+    - name: r1
+      kind: linux
+      connections:
+        - to: mgmt0
+        - to: net0
+        - to: net1
+          # eth2 is router interconnect
+    - name: r2
+      kind: linux
+      connections:
+        - to: mgmt0
+          name: eth0
+        - to: net2
+          name: eth1
+        - to: net1
+          # eth2 is router interconnect
+          name: eth2
+    - name: h2
+      connections:
+        - to: mgmt0
+        - to: net2

tests/flood/test_flood.py

@@ -0,0 +1,109 @@
+# -*- coding: utf-8 eval: (blacken-mode 1) -*-
+#
+# February 9 2022, Christian Hopps <[email protected]>
+#
+# Copyright 2022, LabN Consulting, L.L.C.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; see the file COPYING; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#
+"Simple virtual interface qemu based iptfs test."
+import logging
+import os
+
+import pytest
+from common.config import _network_up, setup_policy_tun, setup_routed_tun
+from common.tests import _test_net_up
+
+# All tests are coroutines
+pytestmark = pytest.mark.asyncio
+
+SRCDIR = os.path.dirname(os.path.abspath(__file__))
+
+
+@pytest.fixture(scope="module", autouse=True)
+async def network_up(unet):
+    await _network_up(unet, ipv6=True)
+
+
+#                       192.168.0.0/24  fd00::/64
+#   --+-------------------+------ mgmt0 ------+-------------------+---
+#     | .1                | .2                | .3                | .4
+#   +----+              +----+              +----+              +----+
+#   | h1 | --- net0 --- | r1 | --- net1 --- | r2 | --- net2 --- | r1 |
+#   +----+ .1        .2 +----+ .2        .3 +----+ .3        .4 +----+
+#          10.0.0.0/24         10.0.1.0/24         10.0.2.0/24
+
+
+async def test_net_up(unet, astepf):
+    await astepf("Before test network up")
+    await _test_net_up(unet, ipv6=True)
+
+
+async def do_ping(h1, astepf):
+    count = 3000
+
+    await astepf("first IPv6 ping")
+    logging.debug(h1.cmd_raises("ping -c1 fc00:0:0:2::4"))
+    await astepf(f"flood {count} IPv6 ping")
+    logging.debug(h1.cmd_raises(f"ping -f -c{count} fc00:0:0:2::4"))
+
+    await astepf("first IPv4 ping")
+    logging.debug(h1.cmd_raises("ping -c1 10.0.2.4"))
+    await astepf(f"flood {count} IPv4 ping")
+    logging.debug(h1.cmd_raises(f"ping -f -c{count} 10.0.2.4"))
+
+
+async def test_policy_tun4_up(unet, astepf, pytestconfig):
+    h1 = unet.hosts["h1"]
+
+    opts = pytestconfig.getoption("--iptfs-opts", "dont-frag")
+    await setup_policy_tun(
+        unet, mode="iptfs", iptfs_opts=opts, ipv6=True, tun_ipv6=False
+    )
+
+    await do_ping(h1, astepf)
+
+
+async def test_routed_tun4_up(unet, astepf, pytestconfig):
+    h1 = unet.hosts["h1"]
+
+    opts = pytestconfig.getoption("--iptfs-opts", "")
+    await setup_routed_tun(
+        unet, mode="iptfs", iptfs_opts=opts, ipv6=True, tun_ipv6=False
+    )
+
+    await do_ping(h1, astepf)
+
+
+async def test_policy_tun6_up(unet, astepf, pytestconfig):
+    h1 = unet.hosts["h1"]
+
+    opts = pytestconfig.getoption("--iptfs-opts", "dont-frag")
+    await setup_policy_tun(
+        unet, mode="iptfs", iptfs_opts=opts, ipv6=True, tun_ipv6=True
+    )
+
+    await do_ping(h1, astepf)
+
+
+async def test_routed_tun6_up(unet, astepf, pytestconfig):
+    h1 = unet.hosts["h1"]
+
+    opts = pytestconfig.getoption("--iptfs-opts", "")
+    await setup_routed_tun(
+        unet, mode="iptfs", iptfs_opts=opts, ipv6=True, tun_ipv6=True
+    )
+
+    await do_ping(h1, astepf)

tests/simplenet/test_simplenet.py

@@ -23,7 +23,7 @@
 import os
 
 import pytest
-from common.config import _network_up, get_sa_values, setup_policy_tun, setup_routed_tun
+from common.config import _network_up, setup_policy_tun, setup_routed_tun
 from common.tests import _test_net_up
 
 # All tests are coroutines