The full output of the daemon helper is added to a NMStrBuf, without
interpreting it as a string (that is, without stopping at the first
NUL character).
However, when we retrieve the content from the NMStrBuf we assume it's
a string. This is fine for certain commands that expect a string
output, but it's not for other commands as the read-file-as-user one.
Add a new argument to nm_utils_spawn_helper() to specify whether the
output is binary or not. Also have different finish functions
depending on the return type.
(cherry picked from commit 1d90d50fc6e8c167581c6831c2511bc4148f234b)
(cherry picked from commit 59df5fc93f)
This is needed to ensure that the right CleanupType is chosen when
calling to nm_device_state_changed() a bit later. With this change
CLEANUP_TYPE_REMOVED will be used instead of CLEANUP_TYPE_DECONFIGURE,
which is wrong because the device has already disappeared.
(cherry picked from commit e06aaba1ca)
As we introduced the ipv4.forwarding property in a8a2e6d727 ('ip-config:
Support configuring per-device IPv4 sysctl forwarding option'), we must
not enable or disable the global forwarding setting in the kernel, as it
affects to all the devices, maybe forcing them to behave in a way
different to what the user requested in ipv4.forwarding.
Instead, we need to selectively enable or disable the per-device forwarding
settings. Specifically, only devices activated with ipv4.forwarding=auto
must have their forwarding enabled or disabled depending on shared
connections. Devices with yes/no must not be affected by shared connections.
Also, devices with ipv4.forwarding=auto must get the proper forwarding value
on activation, but also change it when shared connections appear or
disappear dynamically. Use the new sharing-ipv4-change signal from
nm_manager to achieve it.
Fixes: a8a2e6d727 ('ip-config: Support configuring per-device IPv4 sysctl forwarding option')
(cherry picked from commit 32cbf4c629)
This signal notifies about the "sharing state", that's it, when there
is at least one shared connection active or not. Each device informs
to nm_manager when a shared connection is activated or deactivated
and nm_manager emits this signal when the first shared connection is
activated or the last one is deactivated.
For now we're only interested in IPv4 forwarding as it's the only one
that we need to track from nm_device (in following commits).
Fixes: a8a2e6d727 ('ip-config: Support configuring per-device IPv4 sysctl forwarding option')
(cherry picked from commit 8faa33b9d4)
With the ipv4.forwarding property we may modify the forwarding sysctl of
the device on activation. In next commits, we will also modify it if the
connection is shared, instead of modifying the global forwarding.
Restore the forwarding value to the default one when the device is
deconfigured for any reason.
Fixes: a8a2e6d727 ('ip-config: Support configuring per-device IPv4 sysctl forwarding option')
(cherry picked from commit d58d0a793e)
This reverts commit 2ad5fbf025.
It is actually a partial revert. The changes to documentation don't need
to be reverted.
Fixes: 2ad5fbf025 ('policy: refresh IPv4 forwarding after connection activation and disconnection')
(cherry picked from commit f2a2e49d07)
The flag is used for both sleeping and networking disabled conditions.
This is because internally they share logic, but it's not obvious for
users and it has caused confusion in the past when investigating why
devices didn't become managed. Make it explicit that it can be because
of either reason.
It would be better to create two separate flags, actually, and it
doesn't seem complex, but better not to risk introducing bugs for that
little benefit.
Logs before:
device (enp4s0): state change: disconnected -> unmanaged (reason 'unmanaged-sleeping' ...
Logs before:
device (enp4s0): state change: disconnected -> unmanaged (reason 'unmanaged-nm-disabled' ...
(cherry picked from commit 48fc40e1ca)
When we disable networking with `nmcli networking off` the reason that
is logged is "sleeping". Explain instead that networking is disabled.
Before:
device (lo): state change: activated -> deactivating (reason 'sleeping' ...
After:
device (lo): state change: activated -> deactivating (reason 'networking-off' ...
(cherry picked from commit f6d6a7e2eb)
Uses the `hsr.protocol-version` property defined in the previous
commit to configure the property in the kernel.
(cherry picked from commit 0b99629278)
Adds support for reapplying the `sriov.vfs` property. Note this
does not include `num_vfs`, as the configuration needs to be reset
and reconfigured from scratch in that case.
Previously, if an existing VF is modified (e.g. if we change the `trust`
flag), we reset all VF configurations, and started from scratch. But in
some cases, this is unnecessarily disruptive.
Resolves: https://issues.redhat.com/browse/RHEL-95844
(cherry picked from commit 4ba3ffee67)
The commit linked below introduced a bug that caused that OVS ports
added externally to NM are always deleted when we delete any OVS
interface. It affects to all externally added ports, including those
that are not related to the deleted interface and even those in
different OVS bridges.
Fix it by only modifying ports and bridges that are ascendants of the
deleted interface, leaving everything else untouched.
Note that bridges and ports still need to have at least one NM-managed
interface, otherwise they will also be purged. For example, an NM-owned
OVS bridge with 2 ports+iface, one NM-owned and one external: if we
delete the NM-owned iface, both ports and the bridge will be deleted.
For now, this is a known limitation that is not being fixed here.
Fixes: 476c89b6f2 ('ovs: only keep bridges and ports with NM interfaces attached')
(cherry picked from commit 93491d76ec)
During disposal we're calling to remove_all_aps that in turns schedules
an auto-activate recheck. As the device is removed, this triggers an
assertion when trying to do the recheck.
Fix that by not scheduling the recheck.
Example of backtrace that this commits fix:
0 __libc_do_syscall () at ../sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:47
1 0xf746e270 in __pthread_kill_implementation (threadid=<optimized out>, signo=6, no_tid=<optimized out>) at pthread_kill.c:43
2 0xf743fbc6 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
3 0xf7431614 in __GI_abort () at abort.c:79
4 0xf775afea in g_assertion_message (domain=domain@entry=0x209a9f "nm", file=file@entry=0x1f7d59 "../NetworkManager-1.43.7/src/core/nm-policy.c", line=line@entry=1665,
func=func@entry=0x1f94d9 <__func__.6> "nm_policy_device_recheck_auto_activate_schedule",
message=message@entry=0x1d3e950 "assertion failed: (g_signal_handler_find(device, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, NM_POLICY_GET_PRIVATE(self)) != 0)")
at ../glib-2.72.3/glib/gtestutils.c:3253
5 0xf775b05e in g_assertion_message_expr (domain=0x209a9f "nm", file=0x1f7d59 "../NetworkManager-1.43.7/src/core/nm-policy.c", line=1665,
func=0x1f94d9 <__func__.6> "nm_policy_device_recheck_auto_activate_schedule",
expr=0x1f8afc "g_signal_handler_find(device, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, NM_POLICY_GET_PRIVATE(self)) != 0") at ../glib-2.72.3/glib/gtestutils.c:3279
6 0x0005f27a in nm_policy_device_recheck_auto_activate_schedule (self=0x1d3e950, device=0x209a9f) at ../NetworkManager-1.43.7/src/core/nm-policy.c:1679
7 0x000548ae in nm_manager_device_recheck_auto_activate_schedule (self=<optimized out>, device=<optimized out>) at ../NetworkManager-1.43.7/src/core/nm-manager.c:3113
8 0x00070622 in nm_device_recheck_auto_activate_schedule (self=<optimized out>) at ../NetworkManager-1.43.7/src/core/devices/nm-device.c:9249
9 0xf693aa8c in ap_add_remove (self=self@entry=0x1ceb0b0, is_adding=0, ap=<optimized out>, recheck_available_connections=0)
at ../NetworkManager-1.43.7/src/core/devices/wifi/nm-device-wifi.c:846
10 0xf693bcda in remove_all_aps (self=self@entry=0x1ceb0b0) at ../NetworkManager-1.43.7/src/core/devices/wifi/nm-device-wifi.c:863
11 0xf693f83c in dispose (object=0x1ceb0b0) at ../NetworkManager-1.43.7/src/core/devices/wifi/nm-device-wifi.c:3809
12 0xf7806e72 in g_object_unref (_object=<optimized out>) at ../glib-2.72.3/gobject/gobject.c:3636
13 g_object_unref (_object=0x1ceb0b0) at ../glib-2.72.3/gobject/gobject.c:3553
14 0x000f7fa4 in _nm_dbus_object_clear_and_unexport (location=location@entry=0xffa50644) at ../NetworkManager-1.43.7/src/core/nm-dbus-object.c:203
15 0x000576e4 in remove_device (self=self@entry=0x1c9c900, device=<optimized out>, quitting=quitting@entry=1) at ../NetworkManager-1.43.7/src/core/nm-manager.c:2289
16 0x0005a864 in nm_manager_stop (self=self@entry=0x1c9c900) at ../NetworkManager-1.43.7/src/core/nm-manager.c:7784
17 0x00023438 in main (argc=<optimized out>, argv=<optimized out>) at ../NetworkManager-1.43.7/src/core/main.c:530
Fixes: 96f40dcdcd ('wifi/ap: explicitly unexport AP and refactor add/remove AP')
Fixes: https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/1791
(cherry picked from commit 3904135150)
NM_SETTING_BOND_OPTION_LACP_ACTIVE is flagged as BOND_OPTFLAG_IFDOWN in
the kernel and hence should not be in OPTIONS_REAPPLY_SUBSET.
Authored-by: Mohith Kumar Thummaluru <mohith.k.kumar.thummaluru@oracle.com>
Signed-off-by: Mohith Kumar Thummaluru <mohith.k.kumar.thummaluru@oracle.com>
Signed-off-by: Pradyumn Rahar <pradyumn.rahar@oracle.com>
(cherry picked from commit 9c48bae3b2)
Unrealized software devices are always available for activation,
hardware devices never.
In nm_manager_get_best_device_for_activation() we call
nm_device_is_available() on candidate devices. Without this fix, any
unrealized software device would be not considered ready for
activation, which is wrong.
A software device can override the default implementation of
is_available(). For example NMDeviceOvsInterface does that and only
checks the OVSDB is ready.
Fixes: ba86c208e0 ('Revert "core: prevent the activation of unavailable OVS interfaces only"')
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/2253
(cherry picked from commit 8b26cb35ee)
When a software device becomes deactivated, we check whether it can
be unrealized (= deleted in kernel), by calling function
delete_on_deactivate_check_and_schedule().
The function returns without doing anything if there is a new
activation enqueued on the device (priv->queued_act_request), because
in that case the device will be reused for the next activation.
This commit fixes a problem seen in NMCI test
@ovs_delete_connecting_interface: sometimes the device is not
unrealized after deleting the connection. That happens because if the
queued activation fails, we never try again to unrealize the device.
Fix that by calling delete_on_deactivate_check_and_schedule() when
there is a failure starting the queued activation.
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/2258
(cherry picked from commit 0b03614b68)
The "notify::controller" signal must be emitted on the port, not on
the controller.
Fixes: 1f05526ed7 ('core: drop NMDevice master and introduce controller')
(cherry picked from commit 012f1cbfac)
The validation of embedded NUL character was skipped due to the wrong
order of arguments to memchr(). Fix it.
Fixes: 4043f82790 ('lldp: cleanup converting binary LLDP fields to string')
(cherry picked from commit ce17284c3f)
Linux UIDs/GIDs are 32-bit unsigned integer, with 4294967295 reserved
as undefined.
Before:
# useradd -u 4294967294 -M testuser
useradd warning: testuser's uid -2 outside of the UID_MIN 1000 and UID_MAX 60000 range.
# nmcli connection add type tun ifname tun1 owner 4294967294 ipv4.method disabled ipv6.method disabled
Error: Failed to add 'tun-tun1' connection: tun.owner: '4294967294': invalid user ID
After:
# useradd -u 4294967294 -M testuser
useradd warning: testuser's uid -2 outside of the UID_MIN 1000 and UID_MAX 60000 range.
# nmcli connection add type tun ifname tun1 owner 4294967294 ipv4.method disabled ipv6.method disabled
Connection 'tun-tun1' (5da24d19-1723-45d5-8e04-c976f7a251d0) successfully added.
# ip -d link show tun1
2421: tun1: <NO-CARRIER,POINTOPOINT,MULTICAST,NOARP,UP> mtu 1500 qdisc fq_codel state DOWN mode DEFAULT group default qlen 500
link/none promiscuity 0 allmulti 0 minmtu 68 maxmtu 65535
tun type tun pi off vnet_hdr off persist on user testuser ...
^^^^^^^^^^^^^
Fixes: 1f30147a7a ('libnm-core: add NMSettingTun')
(cherry picked from commit 253800238e)
Currently the bug is hidden because the macro is only called with
NM_SETTING_BOND_OPTION_ARP_IP_TARGET.
Fixes: 45c95e9314 ('device/bond: rework setting of arp_ip_target bond options')
(cherry picked from commit 1229fe5abd)
When resolving the system hostname from DNS lookup, we use
nm_utils_validate_hostname() which checks that the result is a valid
hostname. A valid hostname is at most 64 characters on Linux. Anything
longer is discarded.
However, the reverse DNS lookup doesn't return a hostname, it returns
a DNS name. The DNS name can have multiple labels, each limited to 63
characters. The maximum length of the DNS name is 253 characters.
If the result is longer than 64 characters because it has multiple
labels, we should still accept it, provided that it is a valid DNS
name. Then when setting the hostname in the system, only the first
label will be kept.
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/2243
Resolves: https://issues.redhat.com/browse/RHEL-104357
(cherry picked from commit b019883a9a)
Commit c5d1e35f99 ('device: support reapplying bridge-port VLANs')
didn't update can_reapply_change() to accept the "bridge-port.vlans"
property during a reapply. So, it was only possible to change the
bridge port VLANs by updating the "bridge.vlan-default-pvid" property
and doing a reapply. Fix that.
Fixes: c5d1e35f99 ('device: support reapplying bridge-port VLANs')
(cherry picked from commit 261fa8db33)
If the bridge default-pvid is zero, it means that the default PVID is
disabled. That is, the bridge PVID is not propagated to ports.
Currently NM tries to merge the existing bridge VLANs on the port with
the default PVID from the bridge, even when the PVID is zero. This
causes an error when setting the new VLAN list in the kernel, because
it rejects VLAN zero.
Skip the merge of the default PVID when zero.
Fixes: c5d1e35f99 ('device: support reapplying bridge-port VLANs')
(cherry picked from commit bf79fbd678)
Currently, when a call to Reapply() results in stage3 being re-run, IPv6
ends up messed up. Like this:
$ nmcli device modify eth0 ipv4.address ''
$ nmcli device modify eth0 ipv4.address 172.31.13.37/24
$
NetworkManager[666]: <debug> [1751286095.2070] device[c95ca04a69467d81] (eth0): ip4: reapply...
...
NetworkManager[666]: <debug> [1751286095.2104] device[c95ca04a69467d81] (eth0): ip6: addrgenmode6: set none (already set)
NetworkManager[666]: <debug> [1751286095.2105] device[c95ca04a69467d81] (eth0): ip6: addrgenmode6: toggle disable_ipv6 sysctl after disabling addr-gen-mode
NetworkManager[666]: <debug> [1751286095.2105] platform-linux: sysctl: setting '/proc/sys/net/ipv6/conf/eth0/disable_ipv6' to '1' (current value is '0')
NetworkManager[666]: <debug> [1751286095.2106] platform-linux: sysctl: setting '/proc/sys/net/ipv6/conf/eth0/disable_ipv6' to '0' (current value is '1')
NetworkManager[666]: <debug> [1751286095.2106] platform-linux: sysctl: setting '/proc/sys/net/ipv6/conf/eth0/accept_ra' to '0' (current value is identical)
NetworkManager[666]: <debug> [1751286095.2106] platform-linux: sysctl: setting '/proc/sys/net/ipv6/conf/eth0/disable_ipv6' to '0' (current value is identical)
Not only is this unnecessary because addr-gen-mode already has the
desired value (as is logged), but also wipes off all IPv6 configuration.
This is fine on initial configuration, but not on Reapply().
Let's look at the device state first: if we've progressed past ip-config
state, then we can't possibly ever touch the offending sysctls. It's
okay -- we don't need to: addr-gen-mode is going to be set right if we
went through ip-config before.
Resolves: https://issues.redhat.com/browse/NMT-1681https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/2232
(cherry picked from commit 9bbb113987)
It is useful when there is an already active device and we want to
bring it down preserving the SR-IOV VFs. For example:
$ nmcli connection add type ethernet ifname eni1np1 sriov.total-vfs 2 ipv4.method disabled ipv6.method disabled
$ nmcli connection up ethernet-eni1np1
$ ip link show eni1np1
342: eni1np1: <BROADCAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/ether 6e:cf:f0:08:74:f4 brd ff:ff:ff:ff:ff:ff
vf 0 link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff, ...
vf 1 link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff, ...
$ nmcli device modify eni1np1 sriov.preserve-on-down yes
$ nmcli connection down ethernet-eni1np1
$ ip link show eni1np1
342: eni1np1: <BROADCAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/ether 6e:cf:f0:08:74:f4 brd ff:ff:ff:ff:ff:ff
vf 0 link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff, ...
vf 1 link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff, ...
(cherry picked from commit 6f219aa649)
When using the netdev datapath, we wait that the tun link appears, we
call nm_device_set_ip_ifindex() (which also brings the link up) and
then we check that the link is ready, i.e. that udev has announced the
link and the MAC address is correct. After that, we schedule stage3
(ip-config).
In this, there is a race condition that occurs sometimes in NMCI test
ovs_datapath_type_netdev_with_cloned_mac. In rare conditions,
nm_device_set_ip_ifindex() bring the interface up but then ovs-vswitch
changes again the flags of the interface without IFF_UP. The result is
that the interface stays down, breaking communications.
To fix this, we need to always call nm_device_bring_up() after the tun
device is ready. The problem is that we can't do it in
_netdev_tun_link_cb() because that function is already invoked
synchronously from platform code.
Instead, simplify the handling of the netdev datapath. Every
"link-changed" event from platform is handled by
_netdev_tun_link_cb(), which always schedule a delayed function
_netdev_tun_link_cb_in_idle(). This function just assigns the
ip-ifindex to the device if missing, and starts stage3 if the link is
ready. While doing so, it also bring the interface up.
Fixes: 99a6c6eda6 ('ovs, dpdk: fix creating ovs-interface when the ovs-bridge is netdev')
https://issues.redhat.com/browse/RHEL-17358https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/2218
(cherry picked from commit 46e0d2b4e4)
It is not clear whether we can actually respect this value. For example,
we should not restore the kernel's default value on deactivation or
device's state change, but it is unclear if we can ensure that we'll
still have the connection's configuration in all possible changes of
state.
Also, it is unclear if it's a desirable value that we want to support.
At this point it is mostly clear that trying to configure NM managed
devices externally always ends being dissapointing, no matter how hard
we try.
Remove this value for now, while we discuss whether it makes sense or
not, so it doesn't become stable in the new 1.54 release.
(cherry picked from commit 82692cc75c)
The Open VSwitch interfaces have corresponding platform links. When an
Open VSwitch interface is created while NetworkManager is running, the
OVS factory usually sees an OVSDB entry appear first, then creates a
NMDevice. After that, when a platform link appears, the device is
already there.
Upon a (re-)start, the link might be seen first, and then things
go south. The OVS factory rejects the device, which results in Generic
device being created instead. Another device, this time of an
appropriate is created for the same link once the OVSDB entry is seen.
Needless to say, with two NMDevices for the same platform link existing,
no end of mayhem ensues (an assertion is tripped).
Resolves: https://issues.redhat.com/browse/NMT-1634https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/2207
A device has the "external-down" unmanaged flag when:
!is-created-by-nm AND (!is-up OR (!has-address AND !is-controller))
When the "is-up" or the "has-address" conditions change, we properly update
the unmanaged flag by calling _dev_unmanaged_check_external_down() in
_dev_l3_cfg_notify_cb(PLATFORM_CHANGE_ON_IDLE).
The "is-controller" condition changes when another link indicates the
current device as controller. We currently don't update the unmanaged flag
when that happens and so it's possible that the device stays unmanaged even
if it has a port. This can be easily reproduced by running this commands:
ip link add veth0 type veth peer name veth1
ip link add vrf0 type vrf table 10
ip link set vrf0 up
ip link set veth0 master vrf0
Sometimes, the device shows as "unmanaged" instead of "connected
(externally)".
Fix this by re-evaluating the "external-down" unmanaged flags on the
controller when a port is attached or detached.
Fixes: c3586ce01a ('device: consider a device with slaves configured')
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/2209
When calling to nm_device_is_available, the device types that requires a
parent like VLAN or MACVLAN checks that their parent exists.
nm_device_is_available is a function to check if the device is available
to activate a connection, so it makes sense that if the parent is not
present it can't be activated.
However, this is wrong for 2 reasons:
1. Most of they are virtual devices that might be unrealized when
checking its availability. If they're unrealized, their parent hasn't
been set yet.
2. Even if they're realized, their current parent might not be the one
that is defined in the connection that is being activated.
This is causing that unrealized devices are not being activated as ports
because nm_manager_get_best_device_for_connection thinks that they are
not available.
Get rid of these checks for the parent in the is_available callbacks.
Fixes: ba86c208e0 ('Revert "core: prevent the activation of unavailable OVS interfaces only"')
Fixes: 774badb151 ('core: prevent the activation of unavailable devices')
NMDevices have a special "can_reapply_change_ovs_external_ids" boolean
field indicating whether the device type supports reapplying the
ovs-external-ids and ovs-other-config settings.
Remove this field and use the standard can_reapply_change() method. No
change in behavior is expected.
If a OVS bridge created via NM has a port created externally, when the
bridge connections goes down then NM detaches the NM-created
port. However, it finds that the bridge still has a port (the external
one) and so it doesn't remove the bridge from ovsdb.
This is a problem, because it means that an explicity deactivation of
the bridge leaves the bridge up. To fix this, only track the number of
port in the bridge actually created by NM. Also, leave alone bridges
not created by NM.
Previously, when a generated connection was edited, and the
machine was rebooted, the connection would not apply, and a
new generated connection would be made, because autoconnect
was set to FALSE.
Set autoconnect to be true by default, so that the modified
generated connection is applied.
Make sure nm_device_update_dynamic_ip_setup is called every time a carrier was down before and the link is now up again.
Previously the dhcp lease was not renewed if the carrier went down and then up again quickly enough.
This led to cases where an old IP was retained even though the device was connected to a different network with a different DHCP server.
This commit introduces device_link_carrier_changed_down
Fixes: d6429d3ddb ('device: ensure DHCP is restarted every time the link goes up')
Detected by coverity, the ping_op pointers are used after being freed in
cleanup_ping_operations. Although calling to g_list_remove is probably
safe because it only needs the value of the pointer, not to dereference
it, better to follow best practices. One of the use after free was
actually an error because we dereference ping_op->log_domain.
Fixes: 658aef0fa1 ('connection: Support connection.ip-ping-addresses')
If we cannot get current FEC value probably we won't be able to set it a
few lines later. Also, if it fails to set, we try to use the value of
the old one that we tried to retrieve without success. In that case, the
variable old_fec_mode would be uninitialized. Fix it by returning early
if we cannot get the current value.
Fixes: 19bed3121f ('ethtool: support Forward Error Correction(fec)')
