From: Gregory Greenman <gregory.greenman@xxxxxxxxx>
Clean up data for all allocated links of a vif.
Invalidate all link sta pointers.
Signed-off-by: Gregory Greenman <gregory.greenman@xxxxxxxxx>
---
.../net/wireless/intel/iwlwifi/mvm/mac80211.c | 32 +++++++++++++++----
1 file changed, 25 insertions(+), 7 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index f778ac69c671..9e825e3cf630 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -983,18 +983,23 @@ static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
{
struct iwl_mvm *mvm = data;
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+ unsigned int link_id;
mvmvif->uploaded = false;
- mvmvif->deflink.ap_sta_id = IWL_MVM_INVALID_STA;
spin_lock_bh(&mvm->time_event_lock);
iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
spin_unlock_bh(&mvm->time_event_lock);
- mvmvif->deflink.phy_ctxt = NULL;
memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
- memset(&mvmvif->deflink.probe_resp_data, 0,
- sizeof(mvmvif->deflink.probe_resp_data));
+
+ for_each_mvm_vif_valid_link(mvmvif, link_id) {
+ mvmvif->link[link_id]->ap_sta_id = IWL_MVM_INVALID_STA;
+ mvmvif->link[link_id]->fw_link_id = IWL_MVM_FW_LINK_ID_INVALID;
+ mvmvif->link[link_id]->phy_ctxt = NULL;
+ memset(&mvmvif->link[link_id]->probe_resp_data, 0,
+ sizeof(mvmvif->link[link_id]->probe_resp_data));
+ }
}
static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
@@ -3251,6 +3256,7 @@ void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
+ unsigned int link_id;
/*
* This is called before mac80211 does RCU synchronisation,
@@ -3259,12 +3265,24 @@ void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
* be able to find the station this way, and we don't rely
* on further RCU synchronisation after the sta_state()
* callback deleted the station.
+ * Since there's mvm->mutex here, no need to have RCU lock for
+ * mvm_sta->link access.
*/
mutex_lock(&mvm->mutex);
- if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id]))
- rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id],
- ERR_PTR(-ENOENT));
+ for (link_id = 0; link_id < ARRAY_SIZE(mvm_sta->link); link_id++) {
+ struct iwl_mvm_link_sta *link_sta;
+ u32 sta_id;
+
+ if (!mvm_sta->link[link_id])
+ continue;
+ link_sta = rcu_dereference_protected(mvm_sta->link[link_id],
+ lockdep_is_held(&mvm->mutex));
+ sta_id = link_sta->sta_id;
+ if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[sta_id]))
+ rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id],
+ ERR_PTR(-ENOENT));
+ }
mutex_unlock(&mvm->mutex);
}
--
2.38.1
