mirror of
https://github.com/kernelkit/infix.git
synced 2026-07-30 04:33:00 +02:00
Mattias Walström
34cb229965
All mgmt links should be lightgrey, all mgmt ports should be named mgmt links between duts should be named link.
139 lines
5.9 KiB
Python
Executable File
139 lines
5.9 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# Add join the group 224.1.1.1 from data1 on the host. Send to that
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# group from `msend`, verify that `mrecv` receives it and that `!memb`
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# does not.
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#
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"""
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IGMP basic
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Verify that all multicast get flooded when no IGMP join exists in the system and
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the flooding stops as soon a join arrives
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.1
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.---------------------------.
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| DUT |
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'-data1-----data2-----data3-'
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| | | 10.0.0.0/24
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.-data1-. .-data2-. .-data3-.
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| msend | | mrecv | | !memb |
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'-------' '-------' '-------'
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.2 .3 .4
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HOST
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"""
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import infamy
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import time
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import infamy.multicast as mcast
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query_interval = 4
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with infamy.Test() as test:
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with test.step("Set up topology and attach to target DUTs"):
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env = infamy.Env()
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target = env.attach("target", "mgmt")
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_, msend = env.ltop.xlate("target", "data1")
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_, mreceive = env.ltop.xlate("target", "data2")
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_, nojoin = env.ltop.xlate("target", "data3")
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with test.step("Configure device"):
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target.put_config_dict("ietf-interfaces",
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{
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"interfaces": {
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"interface": [
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{
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"name": msend,
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"enabled": True,
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"infix-interfaces:bridge-port": {
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"bridge": "br0"
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}
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},
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{
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"name": mreceive,
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"enabled": True,
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"infix-interfaces:bridge-port": {
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"bridge": "br0"
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}
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},
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{
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"name": nojoin,
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"enabled": True,
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"infix-interfaces:bridge-port": {
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"bridge": "br0"
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}
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},
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{
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"name": "br0",
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"enabled": True,
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"type": "infix-if-type:bridge",
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"ipv4": {
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"address": [
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{
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"ip": "10.0.0.1",
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"prefix-length": 24
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}
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]
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},
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"bridge": {
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"multicast": {
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"query-interval": query_interval,
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"snooping": True
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}
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}
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}
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]
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}
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})
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_, hsend = env.ltop.xlate("host", "data1")
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_, hreceive = env.ltop.xlate("host", "data2")
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_, hnojoin = env.ltop.xlate("host", "data3")
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with infamy.IsolatedMacVlan(hsend) as send_ns, \
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infamy.IsolatedMacVlan(hreceive) as receive_ns, \
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infamy.IsolatedMacVlan(hnojoin) as nojoin_ns:
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with test.step("Start multicast sender on host:data0, group 224.1.1.1"):
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send_ns.addip("10.0.0.2")
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receive_ns.addip("10.0.0.3")
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nojoin_ns.addip("10.0.0.4")
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send_ns.must_reach("10.0.0.1")
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receive_ns.must_reach("10.0.0.1")
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nojoin_ns.must_reach("10.0.0.1")
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with mcast.MCastSender(send_ns, "224.1.1.1"):
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with test.step("Verify that the group 224.1.1.1 is flooded on host:data2 and host:data3"):
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infamy.parallel(lambda: receive_ns.must_receive("ip dst 224.1.1.1"),
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lambda: nojoin_ns.must_receive("ip dst 224.1.1.1"))
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with test.step("Join multicast group 224.1.1.1 on host:data2"):
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with mcast.MCastReceiver(receive_ns, "224.1.1.1"):
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with test.step("Verify group 224.1.1.1 is received on host:data2"):
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receive_ns.must_receive("ip dst 224.1.1.1")
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with test.step("Verify that the group 224.1.1.1 is no longer received on host:data3"):
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attempt = 0
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# This retry loop exists to handle the case where the first query is lost due
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# to the network just starting up. In particular there's a case where a newly
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# created bridge uses the "NOOP" scheduler (noop_enqueue()) for a split second
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# while it's starting up, which might drop the first query msg.
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while attempt <= query_interval:
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try:
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nojoin_ns.must_not_receive("ip dst 224.1.1.1")
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break
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except Exception as e:
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attempt += 1
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if attempt > query_interval:
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test.fail()
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else:
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print(f"Got mcast flood, retrying ({attempt}/{query_interval})")
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test.succeed()
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