Signed-off-by: Jan Tluka <jtluka(a)redhat.com>
---
docs/source/gre_lwt_tunnel_recipe.rst | 6 +
docs/source/specific_scenarios.rst | 1 +
lnst/Recipes/ENRT/GreLwtTunnelRecipe.py | 221 ++++++++++++++++++++++++
lnst/Recipes/ENRT/__init__.py | 1 +
4 files changed, 229 insertions(+)
create mode 100644 docs/source/gre_lwt_tunnel_recipe.rst
create mode 100644 lnst/Recipes/ENRT/GreLwtTunnelRecipe.py
diff --git a/docs/source/gre_lwt_tunnel_recipe.rst
b/docs/source/gre_lwt_tunnel_recipe.rst
new file mode 100644
index 00000000..6a3d63e4
--- /dev/null
+++ b/docs/source/gre_lwt_tunnel_recipe.rst
@@ -0,0 +1,6 @@
+GreLwtTunnelRecipe
+^^^^^^^^^^^^^^^^^^^
+
+.. autoclass:: lnst.Recipes.ENRT.GreLwtTunnelRecipe.GreLwtTunnelRecipe
+ :members:
+ :show-inheritance:
diff --git a/docs/source/specific_scenarios.rst b/docs/source/specific_scenarios.rst
index 4b952d48..01459da1 100644
--- a/docs/source/specific_scenarios.rst
+++ b/docs/source/specific_scenarios.rst
@@ -8,6 +8,7 @@ Specific ENRT scenarios
vlans_recipe
vlans_over_bond_recipe
gre_tunnel_recipe
+ gre_lwt_tunnel_recipe
gre_tunnel_over_bond_recipe
ip6gre_tunnel_recipe
ip6gre_netns_tunnel_recipe
diff --git a/lnst/Recipes/ENRT/GreLwtTunnelRecipe.py
b/lnst/Recipes/ENRT/GreLwtTunnelRecipe.py
new file mode 100644
index 00000000..8b8aac6b
--- /dev/null
+++ b/lnst/Recipes/ENRT/GreLwtTunnelRecipe.py
@@ -0,0 +1,221 @@
+from lnst.Controller import HostReq, DeviceReq, RecipeParam
+from lnst.Common.IpAddress import (
+ AF_INET,
+ AF_INET6,
+ ipaddress,
+ Ip4Address,
+ Ip6Address,
+)
+from lnst.Devices import GreDevice, LoopbackDevice
+from lnst.RecipeCommon.Ping.PingEndpoints import PingEndpoints
+from lnst.RecipeCommon.PacketAssert import PacketAssertConf
+from lnst.Common.Parameters import Param, StrParam, ChoiceParam
+from lnst.Recipes.ENRT.BaseTunnelRecipe import BaseTunnelRecipe
+
+
+class GreLwtTunnelRecipe(BaseTunnelRecipe):
+ """
+ This class implements a recipe that configures a simple Gre lightweight
+ tunnel between two hosts.
+
+ .. code-block:: none
+
+ .--------.
+ .------| switch |-----.
+ | '--------' |
+ | |
+ .-------|------. .-------|------.
+ | .--'-. | | .--'-. |
+ | |eth0| | | |eth0| |
+ | '----' | | '----' |
+ | | | | | | | |
+ | ----' '--- | | ----' '--- |
+ | gre tunnel | | gre tunnel |
+ | ---------- | | ---------- |
+ | | | |
+ | host1 | | host2 |
+ '--------------' '--------------'
+
+ The actual test machinery is implemented in the :any:`BaseEnrtRecipe` class.
+
+ The test wide configuration is implemented in the :any:`BaseTunnelRecipe`
+ class.
+
+ The recipe provides additional parameter:
+
+ :param carrier_ipversion:
+ This parameter specifies whether IPv4 or IPv6 addresses are
+ used for the underlying (carrier) network. The value is either
+ **ipv4** or **ipv6**
+ """
+
+ host1 = HostReq()
+ host1.eth0 = DeviceReq(label="net1",
driver=RecipeParam("driver"))
+
+ host2 = HostReq()
+ host2.eth0 = DeviceReq(label="net1",
driver=RecipeParam("driver"))
+
+ offload_combinations = Param(
+ default=(
+ dict(gro="on", gso="on", tso="on"),
+ dict(gro="off", gso="on", tso="on"),
+ dict(gro="on", gso="off", tso="off"),
+ dict(gro="on", gso="on", tso="off"),
+ )
+ )
+
+ # TODO: ping over IPv6 does not work yet
+ ip_versions = Param(default=("ipv4",))
+ carrier_ipversion = ChoiceParam(type=StrParam, choices=set(["ipv4",
"ipv6"]))
+
+ def configure_underlying_network(self, configuration):
+ """
+ The underlying network for the tunnel consists of the Ethernet
+ devices on the matched hosts.
+ """
+ host1, host2 = self.matched.host1, self.matched.host2
+ for i, device in enumerate([host1.eth0, host2.eth0]):
+ if self.params.carrier_ipversion == "ipv4":
+ device.ip_add(ipaddress("192.168.101." + str(i + 1) +
"/24"))
+ else:
+ device.ip_add(ipaddress("fc00::" + str(i + 1) +
"/64"))
+ device.up()
+ configuration.test_wide_devices.append(device)
+
+ self.wait_tentative_ips(configuration.test_wide_devices)
+ configuration.tunnel_endpoints = (host1.eth0, host2.eth0)
+
+ def create_tunnel(self, configuration):
+ """
+ The Gre tunnel devices are created with external flag specified
+ so that the encapsulation can be defined externally by routes.
+
+ Routes for IPv4 and IPv6 networks to be tunneled through the Gre are
+ added.
+
+ IPv4 and IPv6 addresses of the tunneled networks are configured on
+ the loopback devices of the matched hosts.
+ """
+ endpoint1, endpoint2 = configuration.tunnel_endpoints
+ m1 = endpoint1.netns
+ m2 = endpoint2.netns
+ if self.params.carrier_ipversion == "ipv4":
+ ip_filter = {"family": AF_INET}
+ else:
+ ip_filter = {"family": AF_INET6, "is_link_local": False}
+
+ endpoint1_ip = endpoint1.ips_filter(**ip_filter)[0]
+ endpoint2_ip = endpoint2.ips_filter(**ip_filter)[0]
+
+ m1_dummy_ip = ipaddress("172.16.10.1/32")
+ m1_dummy_ip6 = ipaddress("fc00:a::1/128")
+ m2_dummy_ip = ipaddress("172.16.20.1/32")
+ m2_dummy_ip6 = ipaddress("fc00:b::1/128")
+
+ m1.gre_tunnel = GreDevice(external=True)
+ m2.gre_tunnel = GreDevice(external=True)
+ m1.lo = LoopbackDevice()
+ m2.lo = LoopbackDevice()
+
+ # A
+ m1.lo.ip_add(m1_dummy_ip)
+ m1.lo.ip_add(m1_dummy_ip6)
+ m1.gre_tunnel.mtu = 1400
+ m1.gre_tunnel.up()
+
+ # B
+ m2.lo.ip_add(m2_dummy_ip)
+ m2.lo.ip_add(m2_dummy_ip6)
+ m2.gre_tunnel.mtu = 1400
+ m2.gre_tunnel.up()
+
+ tunnel_id = 1234
+ encap = "ip" if self.params.carrier_ipversion == "ipv4" else
"ip6"
+ m1.run(
+ "ip route add {} encap {} id {} dst {} dev {}".format(
+ m2_dummy_ip, encap, tunnel_id, endpoint2_ip, m1.gre_tunnel.name
+ )
+ )
+ m2.run(
+ "ip route add {} encap {} id {} dst {} dev {}".format(
+ m1_dummy_ip, encap, tunnel_id, endpoint1_ip, m2.gre_tunnel.name
+ )
+ )
+ m1.run(
+ "ip route add {} encap {} id {} dst {} dev {}".format(
+ m2_dummy_ip6, encap, tunnel_id, endpoint2_ip, m1.gre_tunnel.name
+ )
+ )
+ m2.run(
+ "ip route add {} encap {} id {} dst {} dev {}".format(
+ m1_dummy_ip6, encap, tunnel_id, endpoint1_ip, m2.gre_tunnel.name
+ )
+ )
+
+ configuration.tunnel_devices.extend([m1.gre_tunnel, m2.gre_tunnel])
+ self.wait_tentative_ips([m1.lo, m2.lo])
+
+ def generate_ping_endpoints(self, config):
+ """
+ The ping endpoints for this recipe are the loopback devices that
+ are configured with IP addresses of the tunnelled networks.
+
+ Returned as::
+
+ [PingEndpoints(self.matched.host1.lo, self.matched.host2.lo)]
+ """
+ return [PingEndpoints(self.matched.host1.lo, self.matched.host2.lo)]
+
+ def get_packet_assert_config(self, ping_config):
+ """
+ The packet assert test configuration contains filter for gre protocol
+ and grep patterns to match the ICMP or ICMP6 echo requests encapsulated
+ by Gre.
+ """
+ if self.params.carrier_ipversion == "ipv4":
+ ip_filter = {"family": AF_INET}
+ else:
+ ip_filter = {"family": AF_INET6, "is_link_local": False}
+
+ m1_carrier = self.matched.host1.eth0
+ m2_carrier = self.matched.host2.eth0
+ m1_carrier_ip = m1_carrier.ips_filter(**ip_filter)[0]
+ m2_carrier_ip = m2_carrier.ips_filter(**ip_filter)[0]
+
+ ip1 = ping_config.client_bind
+ ip2 = ping_config.destination_address
+
+ pa_kwargs = {}
+ pa_kwargs["p_filter"] = "proto gre"
+
+ if isinstance(ip2, Ip4Address):
+ pat1 = "{} > {}: GREv0, .* IP {} > {}: ICMP echo
request".format(
+ m1_carrier_ip, m2_carrier_ip, ip1, ip2
+ )
+ pat2 = "{} > {}: GREv0 \| {} > {}: ICMP echo
request".format(
+ m1_carrier_ip, m2_carrier_ip, ip1, ip2
+ )
+ grep_pattern = ["({})|({})".format(pat1, pat2)]
+ elif isinstance(ip2, Ip6Address):
+ pat1 = "{} > {}: GREv0, .* IP6 {} > {}: ICMP6, echo
request".format(
+ m1_carrier_ip, m2_carrier_ip, ip1, ip2
+ )
+ pat2 = "{} > {}: GREv0 \| {} > {}: ICMP6, echo
request".format(
+ m1_carrier_ip, m2_carrier_ip, ip1, ip2
+ )
+ grep_pattern = ["({})|({})".format(pat1, pat2)]
+ else:
+ raise Exception("The destination address is nor IPv4 or IPv6
address")
+
+ pa_kwargs["grep_for"] = grep_pattern
+
+ if ping_config.count:
+ pa_kwargs["p_min"] = ping_config.count
+ m2 = ping_config.destination
+ pa_config = PacketAssertConf(m2, m2_carrier, **pa_kwargs)
+
+ return pa_config
+
+ @property
+ def offload_nics(self):
+ return [self.matched.host1.eth0, self.matched.host2.eth0]
diff --git a/lnst/Recipes/ENRT/__init__.py b/lnst/Recipes/ENRT/__init__.py
index eb91b4c8..454ab296 100644
--- a/lnst/Recipes/ENRT/__init__.py
+++ b/lnst/Recipes/ENRT/__init__.py
@@ -82,6 +82,7 @@ from lnst.Recipes.ENRT.VxlanMulticastRecipe import VxlanMulticastRecipe
from lnst.Recipes.ENRT.VxlanRemoteRecipe import VxlanRemoteRecipe
from lnst.Recipes.ENRT.GreTunnelRecipe import GreTunnelRecipe
from lnst.Recipes.ENRT.GreTunnelOverBondRecipe import GreTunnelOverBondRecipe
+from lnst.Recipes.ENRT.GreLwtTunnelRecipe import GreLwtTunnelRecipe
from lnst.Recipes.ENRT.Ip6GreTunnelRecipe import Ip6GreTunnelRecipe
from lnst.Recipes.ENRT.Ip6GreNetnsTunnelRecipe import Ip6GreNetnsTunnelRecipe
from lnst.Recipes.ENRT.SitTunnelRecipe import SitTunnelRecipe
--
2.26.3