This is a note to let you know that I've just added the patch titled
wifi: iwlwifi: mvm: fix iwl_mvm_mac_flush_sta()
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
wifi-iwlwifi-mvm-fix-iwl_mvm_mac_flush_sta.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 9db9f7dc65fc03428995a11bb8e2d32d503607be
Author: Johannes Berg <johannes.berg@xxxxxxxxx>
Date: Wed Oct 11 13:07:29 2023 +0300
wifi: iwlwifi: mvm: fix iwl_mvm_mac_flush_sta()
[ Upstream commit 43874283ce6c5bd32ac9d30878b2c96a974357cb ]
When I implemented iwl_mvm_mac_flush_sta() I completely botched it;
it basically always happens after the iwl_mvm_sta_pre_rcu_remove()
call, and that already clears mvm->fw_id_to_mac_id[] entries, so we
cannot rely on those at iwl_mvm_mac_flush_sta() time. This means it
never did anything.
Fix this by just going through the station IDs and now with the new
API for iwl_mvm_flush_sta(), call those.
Fixes: a6cc6ccb1c8a ("wifi: iwlwifi: mvm: support new flush_sta method")
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Gregory Greenman <gregory.greenman@xxxxxxxxx>
Link: https://lore.kernel.org/r/20231011130030.0b5878e93118.I1093e60163052e7be64d2b01424097cd6a272979@changeid
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index e68026a657059..a25ea638229b0 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -5602,22 +5602,20 @@ void iwl_mvm_mac_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
void iwl_mvm_mac_flush_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
+ struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- int i;
+ struct iwl_mvm_link_sta *mvm_link_sta;
+ struct ieee80211_link_sta *link_sta;
+ int link_id;
mutex_lock(&mvm->mutex);
- for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {
- struct iwl_mvm_sta *mvmsta;
- struct ieee80211_sta *tmp;
-
- tmp = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
- lockdep_is_held(&mvm->mutex));
- if (tmp != sta)
+ for_each_sta_active_link(vif, sta, link_sta, link_id) {
+ mvm_link_sta = rcu_dereference_protected(mvmsta->link[link_id],
+ lockdep_is_held(&mvm->mutex));
+ if (!mvm_link_sta)
continue;
- mvmsta = iwl_mvm_sta_from_mac80211(sta);
-
- if (iwl_mvm_flush_sta(mvm, mvmsta->deflink.sta_id,
+ if (iwl_mvm_flush_sta(mvm, mvm_link_sta->sta_id,
mvmsta->tfd_queue_msk))
IWL_ERR(mvm, "flush request fail\n");
}
