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policy: add roam-scan timeout

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Add an optional timeout when a better roaming candidate is not found
after the scan-retry limit. The roam state-machine will not retry
scanning before this timeout has expired.

If the timeout is set to 0, the client is kicked instead, which
resembles the behavior prior this commit.

This is added, as without this patch, if a forced disconnect
is not desired before roam_scan_trigger is exceeded the client will
repeatedly be asked to return active beacon-reports. For battery powered
clients this can result in a noticeable battery drain.

Signed-off-by: David Bauer <mail@david-bauer.net>
This commit is contained in:
David Bauer
2021-12-21 15:30:14 +01:00
parent 7e999e0874
commit 9a78412ac5
6 changed files with 41 additions and 7 deletions
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2
usteer.h
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@@ -172,6 +172,7 @@ struct usteer_config {
uint32_t roam_process_timeout;
uint32_t roam_scan_tries;
uint32_t roam_scan_timeout;
uint32_t roam_scan_interval;
int32_t roam_trigger_snr;
@@ -229,6 +230,7 @@ struct sta_info {
uint64_t roam_event;
uint64_t roam_kick;
uint64_t roam_scan_done;
uint64_t roam_scan_timeout_start;
int kick_count;