[PATCH 5.15 272/846] iwlwifi: mvm: perform 6GHz passive scan after suspend
From: Greg Kroah-Hartman
Date: Mon Jan 24 2022 - 17:47:44 EST
From: Avraham Stern <avraham.stern@xxxxxxxxx>
[ Upstream commit f4745cbb17572209a7fa27a6796ed70e7ada860b ]
The 6GHz passive scan is performed only once every 50 minutes.
However, in case of suspend/resume, the regulatory information
is reset, so 6GHz channels may become disabled.
Fix it by performing a 6GHz passive scan within 60 seconds after
suspend/resume even if the 50 minutes timeout did not expire yet.
Signed-off-by: Avraham Stern <avraham.stern@xxxxxxxxx>
Fixes: e8fe3b41c3a3 ("iwlwifi: mvm: Add support for 6GHz passive scan")
Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx>
Link: https://lore.kernel.org/r/iwlwifi.20211219121514.6d5c043372cf.I251dd5618a3f0b8febbcca788eb861f1cd6039bc@changeid
Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/wireless/intel/iwlwifi/mvm/scan.c | 21 ++++++++-----------
1 file changed, 9 insertions(+), 12 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
index d78e436fa8b53..d4d562779d0a2 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
@@ -1924,22 +1924,19 @@ static void iwl_mvm_scan_6ghz_passive_scan(struct iwl_mvm *mvm,
}
/*
- * 6GHz passive scan is allowed while associated in a defined time
- * interval following HW reset or resume flow
+ * 6GHz passive scan is allowed in a defined time interval following HW
+ * reset or resume flow, or while not associated and a large interval
+ * has passed since the last 6GHz passive scan.
*/
- if (vif->bss_conf.assoc &&
+ if ((vif->bss_conf.assoc ||
+ time_after(mvm->last_6ghz_passive_scan_jiffies +
+ (IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) &&
(time_before(mvm->last_reset_or_resume_time_jiffies +
(IWL_MVM_6GHZ_PASSIVE_SCAN_ASSOC_TIMEOUT * HZ),
jiffies))) {
- IWL_DEBUG_SCAN(mvm, "6GHz passive scan: associated\n");
- return;
- }
-
- /* No need for 6GHz passive scan if not enough time elapsed */
- if (time_after(mvm->last_6ghz_passive_scan_jiffies +
- (IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) {
- IWL_DEBUG_SCAN(mvm,
- "6GHz passive scan: timeout did not expire\n");
+ IWL_DEBUG_SCAN(mvm, "6GHz passive scan: %s\n",
+ vif->bss_conf.assoc ? "associated" :
+ "timeout did not expire");
return;
}
--
2.34.1