static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { u32 tfd_msk = 0, ac; for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) tfd_msk |= BIT(vif->hw_queue[ac]); if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE) tfd_msk |= BIT(vif->cab_queue); if (tfd_msk) { mutex_lock(&mvm->mutex); iwl_mvm_flush_tx_path(mvm, tfd_msk, true); mutex_unlock(&mvm->mutex); } if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { /* * Flush the ROC worker which will flush the OFFCHANNEL queue. * We assume here that all the packets sent to the OFFCHANNEL * queue are sent in ROC session. */ flush_work(&mvm->roc_done_wk); } else { /* * By now, all the AC queues are empty. The AGG queues are * empty too. We already got all the Tx responses for all the * packets in the queues. The drain work can have been * triggered. Flush it. This work item takes the mutex, so kill * it before we take it. */ flush_work(&mvm->sta_drained_wk); } }
static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); u32 tfd_msk = 0, ac; for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) tfd_msk |= BIT(vif->hw_queue[ac]); if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE) tfd_msk |= BIT(vif->cab_queue); if (tfd_msk) { mutex_lock(&mvm->mutex); iwl_mvm_flush_tx_path(mvm, tfd_msk, true); mutex_unlock(&mvm->mutex); } if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { /* * Flush the ROC worker which will flush the OFFCHANNEL queue. * We assume here that all the packets sent to the OFFCHANNEL * queue are sent in ROC session. */ flush_work(&mvm->roc_done_wk); } else { /* * By now, all the AC queues are empty. The AGG queues are * empty too. We already got all the Tx responses for all the * packets in the queues. The drain work can have been * triggered. Flush it. This work item takes the mutex, so kill * it before we take it. */ flush_work(&mvm->sta_drained_wk); } mutex_lock(&mvm->mutex); /* * For AP/GO interface, the tear down of the resources allocated to the * interface should be handled as part of the bss_info_changed flow. */ if (vif->type == NL80211_IFTYPE_AP) { iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); goto out_release; } if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { mvm->p2p_device_vif = NULL; iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta); iwl_mvm_binding_remove_vif(mvm, vif); iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt); mvmvif->phy_ctxt = NULL; } /* * TODO: remove this temporary code. * Currently MVM FW supports power management only on single MAC. * Check if only one additional interface remains after removing * current one. Update power mode on the remaining interface. */ if (mvm->vif_count) mvm->vif_count--; IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n", mvm->vif_count); if (mvm->vif_count == 1) { ieee80211_iterate_active_interfaces( mvm->hw, IEEE80211_IFACE_ITER_NORMAL, iwl_mvm_power_update_iterator, mvm); } iwl_mvm_mac_ctxt_remove(mvm, vif); out_release: iwl_mvm_mac_ctxt_release(mvm, vif); mutex_unlock(&mvm->mutex); }