From f7d6ef33a779c866721eea2b980f51bda1994a04 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Sun, 17 Jan 2021 13:10:32 +0200
Subject: iwlwifi: mvm: handle CCA-EXT delay firmware notification
If there are frequent CCA delays due to the extension channel
as detected by the firmware, and we're on 2.4 GHz, then handle
this by disconnecting (with a reconnect hint).
When we disconnect, we'll also update our capabilities to use
only 20 MHz on the next connection (if it's on 2.4 GHz) as to
avoid the use of the extension channel that has too much noise.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210117130510.4de9c363b0b5.I709b7e6f73a7537c53f22d7418927691259de8a8@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
---
drivers/net/wireless/intel/iwlwifi/mvm/utils.c | 30 ++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
(limited to 'drivers/net/wireless/intel/iwlwifi/mvm/utils.c')
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
index ee2e0cb47584..cf1bee04041a 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
@@ -832,6 +832,36 @@ struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm)
return bss_iter_data.vif;
}
+struct iwl_bss_find_iter_data {
+ struct ieee80211_vif *vif;
+ u32 macid;
+};
+
+static void iwl_mvm_bss_find_iface_iterator(void *_data, u8 *mac,
+ struct ieee80211_vif *vif)
+{
+ struct iwl_bss_find_iter_data *data = _data;
+ struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+
+ if (mvmvif->id == data->macid)
+ data->vif = vif;
+}
+
+struct ieee80211_vif *iwl_mvm_get_vif_by_macid(struct iwl_mvm *mvm, u32 macid)
+{
+ struct iwl_bss_find_iter_data data = {
+ .macid = macid,
+ };
+
+ lockdep_assert_held(&mvm->mutex);
+
+ ieee80211_iterate_active_interfaces_atomic(
+ mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
+ iwl_mvm_bss_find_iface_iterator, &data);
+
+ return data.vif;
+}
+
struct iwl_sta_iter_data {
bool assoc;
};
--
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