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Joachim Wiberg
ddc57ed6ae
When a veth pair has one end in a container and the other in the host
namespace, removing it failed: the container end's teardown deleted the
whole pair, so the host end's own delete then failed ("Cannot find
device") and aborted the teardown, leaving the interface behind.
The host-namespace delete added for the both-ends-in-container case was
emitted for every container veth end. Restrict it to the primary end,
which for a host/container pair is the host end that already deletes the
pair itself.
Extend the container veth tests to remove the pair and verify it is gone,
covering both the single-end (regression) and both-ends teardown paths.
Fixes: #1546
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
35 lines
1.1 KiB
Plaintext
35 lines
1.1 KiB
Plaintext
=== VETH Pair Between Two Containers
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ifdef::topdoc[:imagesdir: {topdoc}../../test/case/containers/internal_link]
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==== Description
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Verify that a VETH pair can connect two containers directly, with *both*
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ends handed to containers and neither remaining in the host namespace.
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....
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.------------. .------------.
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| left | | right |
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| veth0a ===|========= veth ===========|=== veth0b |
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'------------' 10.0.0.1 10.0.0.2 '------------'
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....
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The pair is created in the host namespace then each end is moved into
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its container when starting up. Connectivity is verified by pinging
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across the pair, from inside one container's network namespace to the
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other end's address.
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==== Topology
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image::topology.svg[VETH Pair Between Two Containers topology, align=center, scaledwidth=75%]
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==== Sequence
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. Set up topology and attach to target DUT
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. Create VETH pair with both ends assigned to containers
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. Verify both containers have started
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. Verify {LEFT} reaches {RIGHT} over the internal VETH pair
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. Remove containers and VETH pair, verify clean teardown
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