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iwd
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scan: filter user-disabled bands for periodic scans. 

To support user-disabled bands periodic scans need to specify a
frequency list filtered by any bands that are disabled. This was
needed in scan.c since periodic scans don't provide a frequency
list in the scan request.

If no bands are disabled the allowed freqs API should still
result in the same scan behavior as if a frequency list is left
out i.e. IWD just filters the frequencies as opposed to the kernel.
This commit is contained in:
James Prestwood 2023-09-28 05:41:26 -07:00 committed by Denis Kenzior
parent 6463fa2561
commit e83070e074
1 changed files with 36 additions and 0 deletions
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36
src/scan.c
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@ -987,9 +987,43 @@ static void scan_periodic_destroy(void *user_data)
sc->sp.id = 0;
}
static struct scan_freq_set *scan_periodic_get_freqs(struct scan_context *sc)
{
uint32_t band_mask = 0;
struct scan_freq_set *freqs;
const struct scan_freq_set *supported =
wiphy_get_supported_freqs(sc->wiphy);
if (RANK_2G_FACTOR)
band_mask |= BAND_FREQ_2_4_GHZ;
if (RANK_5G_FACTOR)
band_mask |= BAND_FREQ_5_GHZ;
if (RANK_6G_FACTOR)
band_mask |= BAND_FREQ_6_GHZ;
freqs = scan_freq_set_clone(supported, band_mask);
if (scan_freq_set_isempty(freqs)) {
scan_freq_set_free(freqs);
freqs = NULL;
}
return freqs;
}
static bool scan_periodic_queue(struct scan_context *sc)
{
struct scan_parameters params = {};
struct scan_freq_set *freqs = scan_periodic_get_freqs(sc);
/*
* If this happens its due to the user disabling all bands. This will
* cause IWD to never issue another periodic scan so warn the user of
* this.
*/
if (L_WARN_ON(!freqs))
return false;
params.freqs = freqs;
if (sc->sp.needs_active_scan && known_networks_has_hidden()) {
params.randomize_mac_addr_hint = true;
@ -1007,6 +1041,8 @@ static bool scan_periodic_queue(struct scan_context *sc)
scan_periodic_notify, sc,
scan_periodic_destroy);
scan_freq_set_free(freqs);
return sc->sp.id != 0;
}