[Bug 1781597] [NEW] [SRU] WoWLAN settings are not supported

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Alfonso Sanchez-Beato (alfonsosanchezbeato):

[Impact]

WoWLAN lets us wake up the system by sending wake packets over the wifi
connection. This is something requested by some OEM projects, for bionic
server images.

NM 1.12 supports configuring this feature, so this can be achieved by
backporting that support to 1.10 (bionic version). These are the MPs for
cosmic and bionic:

https://code.launchpad.net/~alfonsosanchezbeato/network-manager/+git/network-manager/+merge/349468
https://code.launchpad.net/~alfonsosanchezbeato/network-manager/+git/network-manager/+merge/349465

[Test Case]

First, the wifi card must support WoWLAN. This can be checked by running

$ iw phy

and searching for "WoWLAN support:" in the output. If it is supported,
with the patch applied a connection configured with wowlan can be
created with:

$ sudo nmcli d wifi connect <ssid> password <password>
$ sudo nmcli c modify <ssid> 802-11-wireless.wake-on-wlan 8
$ sudo nmcli c down <ssid>
$ sudo nmcli c up <ssid>

We can check with 'iw' that WoWLAN is active for the connection:

$ iw phy phy0 wowlan show
WoWLAN is enabled:
 * wake up on magic packet

In this case we have configured the connection to wake up the system
when a 'magic' packet is received. We can then suspend the system with

$ sudo systemctl suspend

And we should be able to wake the system from another device with the
command

$ sudo etherwake -i <wifi_iface> <destination_MAC_address>

[Regression Potential]

Although the patch is not especially small, it is a backport of changes
that have been merged upstream, with very little modifications to make
it compile in 1.10. It is also a rather isolated feature that should not
conflict with existing ones. The feature will be activated only if
configured from the command line, so the risk of regressions should be
small. Note also that the patch will be removed as soon as Ubuntu moves
to NM 1.12.

** Affects: network-manager (Ubuntu)
     Importance: Wishlist
         Status: Fix Released

** Affects: network-manager (Ubuntu Bionic)
     Importance: Wishlist
     Assignee: Sebastien Bacher (seb128)
         Status: Triaged

** Affects: network-manager (Ubuntu Cosmic)
     Importance: Wishlist
         Status: Fix Released


** Tags: verification-done-cosmic
-- 
[SRU] WoWLAN settings are not supported
https://bugs.launchpad.net/bugs/1781597
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