We potentially emit a lot of signals. Don't look up the
signal by name because that adds quite some additional
overhead, like peeking for a GQuark.
Instead pass the numeric signal-id directly.
This enum was unused and meaningless because the platform signals
are emitted as a consequence of netlink messages. It is not clear
whether a netlink message was received due to an external event
or an internal action.
Unslaving from a bridge causes a wrong RTM_DELLINK event for
the former slave.
# ip link add dummy0 type dummy
# ip link add bridge0 type bridge
# ip link set bridge0 up
# ip link set dummy0 master bridge0
# ip monitor link &
# ip link set dummy0 nomaster
18: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop master bridge0 state DOWN group default
link/ether 76:44:5f:b9:38:02 brd ff:ff:ff:ff:ff:ff
18: dummy0: <BROADCAST,NOARP> mtu 1500 master bridge0 state DOWN
link/ether 76:44:5f:b9:38:02
Deleted 18: dummy0: <BROADCAST,NOARP> mtu 1500 master bridge0 state DOWN
link/ether 76:44:5f:b9:38:02
18: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN group default
link/ether 76:44:5f:b9:38:02 brd ff:ff:ff:ff:ff:ff
19: bridge0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
19: bridge0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
Previously, during do_request_link() we would remember the link that is
about to be requested (delayed_deletion) and delay processing a new
RTM_DELLINK message until the end of do_request_link() -- and possibly
forget about about the deletion, if RTM_DELLINK was followed by a
RTM_NEWLINK.
However, this hack does not catch the case where an external command
unslaves the link.
Instead just accept the wrong event and raise a "removed" signal right
away. This brings the cache in an externally visible, wrong state that
will be fixed by a following "added" signal.
Still do that because working around the kernel bug is complicated. Also,
we already might emit wrong "added" signals for devices that are already
removed. As a consequence, a user should not consider the platform signals
until all events are processed.
Listeners to that signal should accept that added/removed link changes
can be wrong and should preferably handle them idly, when the events
have settled.
It can even be worse, that a RTM_DELLINK is not fixed by a following
RTM_NEWLINK:
...
# ip link set dummy0 nomaster
36: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop master bridge0 state DOWN
link/ether e2:f2:20:98:3a:be brd ff:ff:ff:ff:ff:ff
36: dummy0: <BROADCAST,NOARP> mtu 1500 master bridge0 state DOWN
link/ether e2:f2:20:98:3a:be
Deleted 36: dummy0: <BROADCAST,NOARP> mtu 1500 master bridge0 state DOWN
link/ether e2:f2:20:98:3a:be
37: bridge0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN
link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
37: bridge0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN
link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
So, when a slave is deleted, we have to refetch it too.
https://bugzilla.redhat.com/show_bug.cgi?id=1285719
On some kernels (at least RHEL-7.2) we receive a spurious RTM_NEWLINK
message after the RTM_DELLINK message for deleting a bond master.
On RHEL-7, the following commands give:
# ip link add dummy0 type dummy
# ip link add bond0 type bond
# ip link set bond0 up
# ip link set dummy0 master bond0
# ip monitor link &
# ip link del bond0
21: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noqueue state DOWN
link/ether 1e:a6:6c:81:c1:8d brd ff:ff:ff:ff:ff:ff
Deleted 21: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN
link/ether 1e:a6:6c:81:c1:8d brd ff:ff:ff:ff:ff:ff
20: dummy0: <BROADCAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
link/ether 1e:a6:6c:81:c1:8d brd ff:ff:ff:ff:ff:ff
21: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN
link/ether da:ee:58:70:6f:e5 brd ff:ff:ff:ff:ff:ff
^^^^^^^^^^^^^^^ RTM_NEWLINK after RTM_DELLINK (and there follows no
RTM_DELLINK afterwards)
21: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN
link/ether da:ee:58:70:6f:e5 brd ff:ff:ff:ff:ff:ff
20: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noqueue state DOWN
link/ether 1e:a6:6c:81:c1:8d brd ff:ff:ff:ff:ff:ff
20: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noqueue state DOWN
link/ether 1e:a6:6c:81:c1:8d brd ff:ff:ff:ff:ff:ff
Fix that by reverting clear_REFRESH_LINK(). This fix has two downsides:
- on kernels where this hack is not necessary, we unnecessarily refetch
a link
- the platform cache first removes the link, adds it again and removes
it. This is ugly, but should have no real consequences because all
listeners to the platform signals delay processing the signals to an
idle handler.
https://bugzilla.redhat.com/show_bug.cgi?id=1285719
This reverts commit f4f4e1cf09.
The related bug rh#1262908 in kernel causes missing netlink notifications
when moving a IFA_LINK interface to another netns.
Add a test for our workaround.
Related: https://bugzilla.redhat.com/show_bug.cgi?id=1262908
The related bug rh#1285827 in kernel causes a missing IFLA_LINK/parent
attribute when creating a veth pair:
# ip monitor link &
[1] 6745
# ip link add dev vm1 type veth peer name vm2
30: vm2@NONE: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
link/ether be:e3:b7:0e:14:52 brd ff:ff:ff:ff:ff:ff
31: vm1@vm2: <BROADCAST,MULTICAST,M-DOWN> mtu 1500 qdisc noop state DOWN
link/ether da:e6:a6:c5:42:54 brd ff:ff:ff:ff:ff:ff
Add a workaround and test.
Related: https://bugzilla.redhat.com/show_bug.cgi?id=1285827
Due to kernel bugs [1], the first netlink event about a new link
sometimes lacks the IFLA_LINKINFO with the link-type lnk data.
In the case the data is missing, schedule a re-fetch the link
hoping that it gets send.
[1] https://bugzilla.redhat.com/show_bug.cgi?id=1284001
"platform" implements a iproute2 like command-line
tool based on NMPlatform.
It is badly maintained and mostly unused. If we want
to test something, we should write tests that are run
automatically during `make check`. Manual tests just
don't fly.
Can't just substitute sysconfdir into a header file -- it's meant to be
expanded in a Makefile. Otherwise, unexpanded ${prefix} will end up in a
header file.
We do that for NMCONFDIR already, let's use it here too.
Fixes: 2144457fab
Instead of reimplementing constructed() just to call
nm_exported_object_export(), use the 'export_on_construction' flag
which does this automatically. This also fixes the following error:
nm_exported_object_export: assertion failed: (priv->_constructed)
Fixes: 8a8ecc46ca
When @src didn't have a gateway and @dst did, the function left @dst's
gateway set to 0.0.0.0; fix this and unset the gateway in such case.
Fixes: 063677101a
Since libnm is the preferred way to interact with NM now, we don't
want to add new device types to libnm-glib.
Make libnm-glib recognize TUN devices as generic ones and modify
NMDeviceGeneric to use the correct D-Bus interface based on the actual
device type.
Refactor nm-device.c to expose a private _nm_device_type_for_path()
function which can be used by subclasses to query the actual device
type. In particular, NMDeviceGeneric will use the result of this
function to figure out which interface to use for the D-Bus proxy.
Makes Zanata unhappy, in the Java way.
for i in po/*.po; do awk '
/^" 0 = / { print "\"%s\""; n=1; next; }
/^" 8 = / { n=0; next }
{ if (!n) print }' $i >x
mv x $i
done
Fixes: 3641ddb00a
When you want to run valgrind for a test, you either had to
invoke valgrind manually, or doing it via `make check` (provided
you configured --with-valgrind).
Make it more convenient to run valgrind by passing the test
to run to the "run-test-valgrind.sh" wrapper.
This also allows to pass -p/-s to the test, which is not possible
during `make check` because selecting tests conflicts with "--tap".
The following invocations are largely equivalent and work as
expected:
$ ./tools/run-test-valgrind.sh ./src/platform/tests/test-link-linux -p /link/software/detect/vlan
$ NMTST_DEBUG=no-debug,p=/link/software/detect/vlan ./tools/run-test-valgrind.sh ./src/platform/tests/test-link-linux
For tests based on glib's test framework, you can select which tests to
run by passing -p/-s on the command line.
Usually, we want to invoke our tests via `make check` which conveniently
calls valgrind (run-test-valgrind.sh) or spawns a private D-Bus server
(libnm-test-launch.sh, libnm-glib-test-launch.sh). At that point, it is
not directly possible to specify command line arguments for the tests,
which is why it is convenient to specify arguments via $NMTST_DEBUG
environment variable.
Parse "p" and "s" arguments from $NMTST_DEBUG and pass them to g_test_init()
to select which tests to run.
NMTST_DEBUG=p=/core/general/test_setting_ip4_changed_signal ./libnm-core/tests/test-general
However, there is a problem here: in gtestutils, -p/-s conflicts with --tap,
which is how our Makefile invokes the tests. Thus the new options explicitly
don't work when being called during `make check`. Which makes this much
less useful. I only noticed that afterwards, so still keep the patch
because it might still be convenient during developing tests to set the
environment variable once, and then repeatedly spawn the tests, without
specifying -p/-s.
