From: Johannes Berg Date: Wed, 11 Oct 2023 10:07:29 +0000 (+0300) Subject: wifi: iwlwifi: mvm: fix iwl_mvm_mac_flush_sta() X-Git-Tag: v6.6.17~3503 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=550be5c4196d60003f39ee8956446d806ab348dc;p=platform%2Fkernel%2Flinux-rpi.git 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 Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20231011130030.0b5878e93118.I1093e60163052e7be64d2b01424097cd6a272979@changeid Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index e68026a..a25ea63 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"); }