The hardware address of a VLAN must be kept aligned with the one of
its parent device, and we already used a signal in NMDeviceVlan to
catch changes in parent address and update the VLAN device
accordingly.
But this didn't work in all cases because the change might happen
after the VLAN gets created but before we register the signal, so it
is necessary to add further checks to enforce the alignment during the
device activation.
https://bugzilla.redhat.com/show_bug.cgi?id=1325752
Don't rely on what's already on the device. It could be that the MAC address
set on the device is not meaningful -- the NM crashed while two devices were
teamed together and now they have the same hardware address and now it's
impossible to bond them with mode=5.
- All internal source files (except "examples", which are not internal)
should include "config.h" first. As also all internal source
files should include "nm-default.h", let "config.h" be included
by "nm-default.h" and include "nm-default.h" as first in every
source file.
We already wanted to include "nm-default.h" before other headers
because it might contains some fixes (like "nm-glib.h" compatibility)
that is required first.
- After including "nm-default.h", we optinally allow for including the
corresponding header file for the source file at hand. The idea
is to ensure that each header file is self contained.
- Don't include "config.h" or "nm-default.h" in any header file
(except "nm-sd-adapt.h"). Public headers anyway must not include
these headers, and internal headers are never included after
"nm-default.h", as of the first previous point.
- Include all internal headers with quotes instead of angle brackets.
In practice it doesn't matter, because in our public headers we must
include other headers with angle brackets. As we use our public
headers also to compile our interal source files, effectively the
result must be the same. Still do it for consistency.
- Except for <config.h> itself. Include it with angle brackets as suggested by
https://www.gnu.org/software/autoconf/manual/autoconf.html#Configuration-Headers
Get rid of NM_UNMANAGED_DEFAULT and refine the interaction between
unmanaged flags, device state and managed property.
Previously, the NM_UNMANAGED_DEFAULT was special in that a device was
still considered managed if it had solely the NM_UNMANAGED_DEFAULT flag
set and its state was managed. Thus, whether the device (state) was managed,
depended on the device state too.
Now, a device is considered managed (or unmanaged) based on the unmanaged
flags and realization state alone. At the same time, the device state
directly corresponds to the managed property of the device. Of course,
while changing the unmanaged flags, that invariant is shortly violated
until the state transistion is complete.
Introduce more unmanaged flags whereas some of them are non-authorative.
For example, the EXTERNAL_DOWN flag has only effect as long as the user
didn't explicitly manage the device (NM_UNMANAGED_USER_EXPLICIT). In other
words, certain flags can render other flags ineffective. Whether the device
is considered managed depends on the flags but also at the explicitly unset flags.
In a way, this is similar to previous where NM_UNMANAGED_DEFAULT was ignored
(if no other flags were present).
Also, previously a device that was NM_UNMANAGED_DEFAULT and in disconnected
state would transition back to unmanaged. No longer do that. Once a device is
managed, it stays managed as long as the flags indicate it should be managed.
However, the user can also modify the unmanaged flags via the D-Bus API.
Also get rid or nm_device_finish_init(). That was previously called
by NMManager after add_device(). As we now realize devices (possibly
multiple times) this should be handled during realization.
https://bugzilla.gnome.org/show_bug.cgi?id=746566
When we decide to add a new link, we alredy checked that no such link exists
(ignoring race conditions).
It is wrong to accept a EXITS failure when adding the link. There is no guarantee
that the existing link has all the same properties as the one we intend to add.
More importantly, this link was added externally outside of NetworkManager and it
should not be taken over.
Just treat EXISTS as a failure as any other.
Extract a function update_properties() similar to other device
implementations. It reads the device specific data from platform
and raises property-changed notifications.
update_properties() is now called by realize_start_notify().
NMDeviceVlan:realize() -- which previously implemented something like
update_properties() -- now does nothing. Note that previously
realize() might have failed, but this is different from other device
implementations and it was unclear what a failure really meant.
Ok, it might fail because the link was not found in the platform cache.
But other implementations don't check that either, so why vlan? And
how to handle that properly anyway?
Therefore realize()'s implementation is no longer needed because
nm_device_realize() already calls realize_start_setup(), which
calls realize_start_notify() and update_properties().
update_connection() no longer refreshes the device properties.
Instead it only modifies the passed-in NMConnection. It's a bit
ugly that update_connection() uses both cached properties from
NMDeviceVlan (vlan_id) and platform properties (xgress maps).
Also, update_connection() doesn't return early on error but continues
trying to update the NMConnection. The reason is that update_connection()
cannot return a failure status.
All implementations of NMDevice:setup_start() in derived classes
invoke the parent implementation first. Enforce that by moving
NMDevice:setup_start() to realize_start_setup() and only notify
derived classes afterwards via NMDevice:realize_start_notify().
We inconsistently use gulong,guint,int types to store signal handler
id, but the type returned by g_signal_connect() is a gulong.
This has no practical consequences because a int/guint is enough to
store the value, however it is better to use a consistent type, also
because nm_clear_g_signal_handler() accepts a pointer to the signal id
and thus it must be always called with the same pointer type.
Parent MAC can be NULL if the interface has gone, fix the following
failed assertion:
[devices/nm-device-vlan.c:107] parent_hwaddr_changed(): (vlan1): parent hardware address changed
nm_device_set_hw_addr: assertion 'addr != NULL' failed
While at it, improve logging by printing the new MAC address.
Fixes: e6d7fee5a6
Link related functions should have a "nm_platform_link" prefix. Rename.
Naming is a subjective matter and one might argue that omitting
the "link" part from the name is shorter and even preferred.
However, I think functions related to links should have a common
prefix as the underlyings are strongly related.
Let the link-add functions return the internal pointer to the platform
link object. Similar to link-get, which doesn't copy the link either.
Also adjust the sole users of the add-functions (create-and-realize)
to take the pointer.
Eventually we still copy the returned data, because accessing platform can
invalidate the returned pointer. Thus we don't actually safe any copying
by this (at least every use of the function currently leads to the data
being copied).
Still change it, because I think the API of NMPlatform should look like that.
NMPlatformLink is a plain struct (not a GObject, for which we usually
don't use const). We certainly don't want the functions to modify the
passed-in data.
Ensure the platform link with the same interface name as the
NMDevice is actually compatible with it before using the link
for initialization of device properties. If not, remove the
NMDevice and create a new one since there are kernel resources
with a different type.
Unrealized devices aren't backed by kernel resources and so won't know
all of their attributes. That means three things:
1) they must update their attributes when they become realized
2) they must clear those attributes when unrealized
3) they must be looser in checking compatible connections until
they are realized
This requires that the setup() function be split into two parts, start & finish,
because finish must be run after add_device()
Also, we can simplify whether to pay attention to 'recheck-assume', which
is now dependent on priv->is_nm_owned, because the only case where NM should
*not* listen for the 'recheck-assume' signal is when the device is a
software device created by NM itself. That logic was previously spread
across the callers of add_device() but is now consolidated into
nm-manager.c::device_realized() and nm-device.c::nm_device_create_and_realize().
Commit cd3df12c8f reused the
virtual function component_added() to notify the vlan device
about a possibly new parent.
This reuse of the virtual function for another purpose is confusing.
Clean that up by splitting the implementation and add a new
virtual function nm_device_notify_new_device_added() which gets
(only implemented by NMDeviceVlan).
In update_connection(), pickup the configuration of
the vlan interface from platform and create the proper
NMSettingVlan setting.
And during stage1, configure the flags of the device.
Also, change all the ingress/egress mappings at once
instead of having a netlink request for each mapping.
Also, ensure we *clear* all other mappings so that
only those are set, that were configured (done by
the *gress_reset_all argument).
When a VLAN has a bond as parent device the MAC address of the bond
may change when other devices are enslaved and then the VLAN would
have a MAC which is different from parent's one.
Let the VLAN device listen for changes in hw-address property of
parent and update its MAC address accordingly.
https://bugzilla.redhat.com/show_bug.cgi?id=1264322
Clone the connection upon activation. This makes it safe for the user
to modify the original connection while it is activated.
This involves several changes:
- NMActiveConnection gets @settings_connection and @applied_connection.
To support add-and-activate, we constructing a NMActiveConnection with
no connection set. Previously, we would set the "connection" field to
a temporary NMConnection. Now NMManager piggybacks this temporary
connection as object-data (TAG_ACTIVE_CONNETION_ADD_AND_ACTIVATE).
- get rid of the functions nm_active_connection_get_connection_type()
and nm_active_connection_get_connection_uuid(). From their names
it is unclear whether this returns the settings or applied connection.
The (few) callers should figure that out themselves.
- rename nm_active_connection_get_id() to
nm_active_connection_get_settings_connection_id(). This function
is only used internally for logging.
- dispatcher calls now get two connections as well. The
applied-connection is used for the connection data, while
the settings-connection is used for the connection path.
- needs special handling for properties that apply immediately
when changed (nm_device_reapply_settings_immediately()).
Co-Authored-By: Thomas Haller <thaller@redhat.com>
https://bugzilla.gnome.org/show_bug.cgi?id=724041
Program received signal SIGSEGV, Segmentation fault.
0x0000555555646b59 in platform_link_added (self=self@entry=0x5555559fe1d0,
ifindex=<optimized out>, plink=plink@entry=0x555555b10a70)
at nm-manager.c:1889
1889 nm_log_warn (LOGD_HW, "%s: factory failed to create device: %s",
(gdb) bt
#0 0x0000555555646b59 in platform_link_added (self=self@entry=0x5555559fe1d0, ifindex=<optimized out>, plink=plink@entry=0x555555b10a70) at nm-manager.c:1889
#1 0x000055555564980c in nm_manager_start (self=0x5555559fe1d0)
at nm-manager.c:1988
#2 0x000055555564980c in nm_manager_start (self=0x5555559fe1d0, error=error@entry=0x7fffffffe658) at nm-manager.c:4212
#3 0x00005555555ae173 in main (argc=1, argv=0x7fffffffe7c8) at main.c:428
(gdb)
The parent of a link (IFLA_LINK) can be in another network namespace and
thus invisible to NM.
This requires the netlink attribute IFLA_LINK_NETNSID which is supported
by recent versions of kernel and libnl.
In this case, set the parent field to NM_PLATFORM_LINK_OTHER_NETNS
and properly handle this special case.
It might just be that we didn't see it yet; either on daemon startup on in a
race. The nm_platform_*_add() deals with the device already being there in
_link_add_check_existing().
NetworkManager:ERROR:devices/nm-device-bridge.c:402:create_and_realize: assertion failed: (nm_device_get_ifindex (device) <= 0)
Program received signal SIGABRT, Aborted.
0x00007ffff46965d7 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
56 return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
Missing separate debuginfos, use: debuginfo-install bluez-libs-5.23-4.el7.x86_64
(gdb) bt
#0 0x00007ffff46965d7 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1 0x00007ffff4697cc8 in __GI_abort () at abort.c:90
#2 0x00007ffff4a916d5 in g_assertion_message (domain=domain@entry=0x5a5088 "NetworkManager", file=file@entry=0x59b0f2 "devices/nm-device-bridge.c", line=line@entry=402, func=func@entry=0x59b3f0 <__FUNCTION__.29169> "create_and_realize", message=message@entry=0xa76a30 "assertion failed: (nm_device_get_ifindex (device) <= 0)") at gtestutils.c:2292
#3 0x00007ffff4a9176a in g_assertion_message_expr (domain=domain@entry=0x5a5088 "NetworkManager", file=file@entry=0x59b0f2 "devices/nm-device-bridge.c", line=line@entry=402, func=func@entry=0x59b3f0 <__FUNCTION__.29169> "create_and_realize", expr=expr@entry=0x59aef8 "nm_device_get_ifindex (device) <= 0") at gtestutils.c:2307
#4 0x0000000000447cb6 in create_and_realize (device=0xa77f40 [NMDeviceBridge], connection=0x8d0200, parent=<optimized out>, out_plink=0x7fffffffd700, error=0x0) at devices/nm-device-bridge.c:402
#5 0x000000000045d560 in nm_device_create_and_realize (self=self@entry=0xa77f40 [NMDeviceBridge], connection=connection@entry=0x8d0200, parent=<optimized out>, error=error@entry=0x0)
at devices/nm-device.c:1594
#6 0x00000000004d4b64 in system_create_virtual_device (self=self@entry=0x8802b0 [NMManager], connection=connection@entry=0x8d0200, error=error@entry=0x0) at nm-manager.c:983
#7 0x00000000004d4d71 in system_create_virtual_devices (self=0x8802b0 [NMManager]) at nm-manager.c:1022
#8 0x00000000004d47a5 in add_device (self=<optimized out>, device=<optimized out>, try_assume=<optimized out>) at nm-manager.c:1785
#9 0x00000000004d501f in platform_link_added (self=self@entry=0x8802b0 [NMManager], ifindex=<optimized out>, plink=plink@entry=0xa7f810) at nm-manager.c:1887
#10 0x00000000004d7c24 in nm_manager_start (self=0x8802b0 [NMManager]) at nm-manager.c:1959
#11 0x00000000004d7c24 in nm_manager_start (self=self@entry=0x8802b0 [NMManager], error=error@entry=0x7fffffffd930) at nm-manager.c:4178
#12 0x00000000004459ec in main (argc=1, argv=0x7fffffffda88) at main.c:442
(gdb)
The localization headers are now included via "nm-default.h".
Also fixes several places, where we wrongly included <glib/gi18n-lib.h>
instead of <glib/gi18n.h>. For example under "clients/" directory.
Future patches will create devices long before they are backed by
kernel resources, so we need to split NMDevice object creation from
actual setup based on the backing resources.
This patch combines the NMDeviceFactory's new_link() and
create_virtual_device_for_connection() class methods into a single
create_device() method that simply creates an unrealized NMDevice
object; this method is not expected to fail unless the device is
supposed to be ignored. This also means that the NMDevice
'platform-device' property is removed, because a platform link
object may not be available at NMDevice object creation time.
After the device is created, it is then "realized" at some later
time from a platform link (for existing/hardware devices via the
realize() method) or from an NMConnection (for newly created software
devices via the create_and_realize() NMDeviceClass methods).
https://bugzilla.gnome.org/show_bug.cgi?id=737458
Move D-Bus export/unexport handling into NMExportedObject and remove
type-specific export/get_path methods (export paths are now specified
at the class level, and NMExportedObject handles the counters for all
exported types automatically).
Since all exportable objects now use the same get_path() method, we
can also add some helper methods to simplify get_property()
implementations for object-path and object-path-array properties.
Add NMExportedObject, make it the base class of all D-Bus-exported
types, and move the nm-properties-changed-signal logic into it. (Also,
make NMSettings use the same properties-changed code as everything
else, which it was not previously doing, presumably for historical
reasons).
(This is mostly just shuffling code around at this point, but
NMExportedObject will be more important in the gdbus port, since
gdbus-codegen doesn't do a very good job of supporting objects that
export multiple interfaces [as each NMDevice subclass does, for
example], so we will need more glue/helper code in NMExportedObject
then.)
Rather than randomly including one or more of <glib.h>,
<glib-object.h>, and <gio/gio.h> everywhere (and forgetting to include
"nm-glib-compat.h" most of the time), rename nm-glib-compat.h to
nm-glib.h, include <gio/gio.h> from there, and then change all .c
files in NM to include "nm-glib.h" rather than including the glib
headers directly.
(Public headers files still have to include the real glib headers,
since nm-glib.h isn't installed...)
Also, remove glib includes from header files that are already
including a base object header file (which must itself already include
the glib headers).
Later remove nm_platform_get_error() and signal errors via return
error codes.
Also, fix nm_platform_infiniband_partition_add() and
nm_platform_vlan_add() to check the type of the existing link
and fail with WRONG_TYPE otherwise.
We need to know whether we can create interfaces of any given
NMDevice subclass or not. So don't rely on just the NMPlatformLink
for that information, because we won't have a platform link for
software devices before we create them.
Instead of hacky stuff in the Manager, let plugins themselves indicate
which links should be ignored (because they are really child links that
are controlled by a different device that the plugin handles).
Ethernet, WiFi, and VLAN used the same implementation for initial address.
Ethernet and WiFi used the same implementation (and duplicated code) for
permanent MAC address, plus they both used ethtool in what should be
generic code, which is better done in the platform.
