wifi: rework scanning of Wi-Fi device

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Handling the scanning is complicated.

- we want to have periodic scans. But only at certain times,
and with an increasing back off timeout.

- the user can initiate explicit scans via D-Bus. Thereby a list
of SSIDs scan be provided.

- if there are any hidden Wi-Fi profiles configured, we want
to explicitly scan for their SSIDs.

- explicit scans are not possible at any time. But we should not reject
the scan request, but instead remember to scan later, when possible.

This is a heavy rework. It also aims to fix issues of scanning since
the recent rework of supplicant handling in commit b83f07916a
('supplicant: large rework of wpa_supplicant handling') that can render
Wi-Fi scanning broken.

Fixes: b83f07916a ('supplicant: large rework of wpa_supplicant handling'):
(cherry picked from commit e07fc217ec)

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This commit is contained in:

Thomas Haller

2020-04-24 16:54:35 +02:00

parent 1fea82083e

commit 7500e90b53

1 changed files with 554 additions and 334 deletions

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src/devices/wifi/nm-device-wifi.c

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