From: David Spinadel <david.spinadel@xxxxxxxxx>
Currently the FW doesn't support sched scan while associated,
Prevent it.
Signed-off-by: David Spinadel <david.spinadel@xxxxxxxxx>
Reviewed-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Reviewed-by: Luciano Coelho <luciano.coelho@xxxxxxxxx>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
---
drivers/net/wireless/iwlwifi/mvm/mac80211.c | 5 +++++
drivers/net/wireless/iwlwifi/mvm/mvm.h | 3 +++
drivers/net/wireless/iwlwifi/mvm/utils.c | 19 +++++++++++++++++++
3 files changed, 27 insertions(+)
diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
index f0cebf1..593f723 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
@@ -1807,6 +1807,11 @@ static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
mutex_lock(&mvm->mutex);
+ if (iwl_mvm_is_associated(mvm)) {
+ ret = -EBUSY;
+ goto out;
+ }
+
switch (mvm->scan_status) {
case IWL_MVM_SCAN_OS:
IWL_DEBUG_SCAN(mvm, "Stopping previous scan for sched_scan\n");
diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h
index d564233..84c75a1 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h
@@ -1003,6 +1003,9 @@ static inline bool iwl_mvm_vif_low_latency(struct iwl_mvm_vif *mvmvif)
return mvmvif->low_latency;
}
+/* Assoc status */
+bool iwl_mvm_is_associated(struct iwl_mvm *mvm);
+
/* Thermal management and CT-kill */
void iwl_mvm_tt_tx_backoff(struct iwl_mvm *mvm, u32 backoff);
void iwl_mvm_tt_handler(struct iwl_mvm *mvm);
diff --git a/drivers/net/wireless/iwlwifi/mvm/utils.c b/drivers/net/wireless/iwlwifi/mvm/utils.c
index d619851..6fdbef9 100644
--- a/drivers/net/wireless/iwlwifi/mvm/utils.c
+++ b/drivers/net/wireless/iwlwifi/mvm/utils.c
@@ -644,3 +644,22 @@ bool iwl_mvm_low_latency(struct iwl_mvm *mvm)
return result;
}
+
+static void iwl_mvm_assoc_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
+{
+ bool *assoc = _data;
+
+ if (vif->bss_conf.assoc)
+ *assoc = true;
+}
+
+bool iwl_mvm_is_associated(struct iwl_mvm *mvm)
+{
+ bool assoc = false;
+
+ ieee80211_iterate_active_interfaces_atomic(
+ mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
+ iwl_mvm_assoc_iter, &assoc);
+
+ return assoc;
+}
--
1.8.3.2
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