/****************************************************************************** * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. * * GPL LICENSE SUMMARY * * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, * USA * * The full GNU General Public License is included in this distribution * in the file called COPYING. * * Contact Information: * Intel Linux Wireless * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * * BSD LICENSE * * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * Neither the name Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * *****************************************************************************/ #include #include #include #include #include #include #include #include #include "iwl-op-mode.h" #include "iwl-io.h" #include "mvm.h" #include "sta.h" #include "time-event.h" #include "iwl-eeprom-parse.h" #include "fw-api-scan.h" #include "iwl-phy-db.h" static const struct ieee80211_iface_limit iwl_mvm_limits[] = { { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP), }, { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_CLIENT) | BIT(NL80211_IFTYPE_P2P_GO), }, { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE), }, }; static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = { { .num_different_channels = 1, .max_interfaces = 3, .limits = iwl_mvm_limits, .n_limits = ARRAY_SIZE(iwl_mvm_limits), }, }; #ifdef CONFIG_PM_SLEEP static const struct nl80211_wowlan_tcp_data_token_feature iwl_mvm_wowlan_tcp_token_feature = { .min_len = 0, .max_len = 255, .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS, }; static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = { .tok = &iwl_mvm_wowlan_tcp_token_feature, .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN - sizeof(struct ethhdr) - sizeof(struct iphdr) - sizeof(struct tcphdr), .data_interval_max = 65535, /* __le16 in API */ .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN - sizeof(struct ethhdr) - sizeof(struct iphdr) - sizeof(struct tcphdr), .seq = true, }; #endif int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) { struct ieee80211_hw *hw = mvm->hw; int num_mac, ret, i; /* Tell mac80211 our characteristics */ hw->flags = IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_SPECTRUM_MGMT | IEEE80211_HW_REPORTS_TX_ACK_STATUS | IEEE80211_HW_QUEUE_CONTROL | IEEE80211_HW_WANT_MONITOR_VIF | IEEE80211_HW_SUPPORTS_PS | IEEE80211_HW_SUPPORTS_DYNAMIC_PS | IEEE80211_HW_AMPDU_AGGREGATION | IEEE80211_HW_TIMING_BEACON_ONLY; hw->queues = IWL_MVM_FIRST_AGG_QUEUE; hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE; hw->rate_control_algorithm = "iwl-mvm-rs"; /* * Enable 11w if advertised by firmware and software crypto * is not enabled (as the firmware will interpret some mgmt * packets, so enabling it with software crypto isn't safe) */ if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP && !iwlwifi_mod_params.sw_crypto) hw->flags |= IEEE80211_HW_MFP_CAPABLE; hw->sta_data_size = sizeof(struct iwl_mvm_sta); hw->vif_data_size = sizeof(struct iwl_mvm_vif); hw->chanctx_data_size = sizeof(struct iwl_mvm_phy_ctxt); hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_P2P_CLIENT) | BIT(NL80211_IFTYPE_AP) | BIT(NL80211_IFTYPE_P2P_GO) | BIT(NL80211_IFTYPE_P2P_DEVICE); hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY | WIPHY_FLAG_DISABLE_BEACON_HINTS | WIPHY_FLAG_IBSS_RSN; hw->wiphy->iface_combinations = iwl_mvm_iface_combinations; hw->wiphy->n_iface_combinations = ARRAY_SIZE(iwl_mvm_iface_combinations); hw->wiphy->max_remain_on_channel_duration = 10000; hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; /* Extract MAC address */ memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); hw->wiphy->addresses = mvm->addresses; hw->wiphy->n_addresses = 1; /* Extract additional MAC addresses if available */ num_mac = (mvm->nvm_data->n_hw_addrs > 1) ? min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1; for (i = 1; i < num_mac; i++) { memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr, ETH_ALEN); mvm->addresses[i].addr[5]++; hw->wiphy->n_addresses++; } /* we create the 802.11 header and a max-length SSID element */ hw->wiphy->max_scan_ie_len = mvm->fw->ucode_capa.max_probe_length - 24 - 34; hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels) hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ]; if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ]; hw->wiphy->hw_version = mvm->trans->hw_id; if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; else hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | NL80211_FEATURE_P2P_GO_OPPPS; mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; #ifdef CONFIG_PM_SLEEP if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len && mvm->trans->ops->d3_suspend && mvm->trans->ops->d3_resume && device_can_wakeup(mvm->trans->dev)) { hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT | WIPHY_WOWLAN_DISCONNECT | WIPHY_WOWLAN_EAP_IDENTITY_REQ | WIPHY_WOWLAN_RFKILL_RELEASE; if (!iwlwifi_mod_params.sw_crypto) hw->wiphy->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | WIPHY_WOWLAN_GTK_REKEY_FAILURE | WIPHY_WOWLAN_4WAY_HANDSHAKE; hw->wiphy->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; hw->wiphy->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; hw->wiphy->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; hw->wiphy->wowlan.tcp = &iwl_mvm_wowlan_tcp_support; } #endif ret = iwl_mvm_leds_init(mvm); if (ret) return ret; return ieee80211_register_hw(mvm->hw); } static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control, struct sk_buff *skb) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); if (test_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status)) { IWL_DEBUG_DROP(mvm, "Dropping - RF KILL\n"); goto drop; } if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE && !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status)) goto drop; if (control->sta) { if (iwl_mvm_tx_skb(mvm, skb, control->sta)) goto drop; return; } if (iwl_mvm_tx_skb_non_sta(mvm, skb)) goto drop; return; drop: ieee80211_free_txskb(hw, skb); } static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, enum ieee80211_ampdu_mlme_action action, struct ieee80211_sta *sta, u16 tid, u16 *ssn, u8 buf_size) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); int ret; IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n", sta->addr, tid, action); if (!(mvm->nvm_data->sku_cap_11n_enable)) return -EACCES; mutex_lock(&mvm->mutex); switch (action) { case IEEE80211_AMPDU_RX_START: if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) { ret = -EINVAL; break; } ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true); break; case IEEE80211_AMPDU_RX_STOP: ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false); break; case IEEE80211_AMPDU_TX_START: if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) { ret = -EINVAL; break; } ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn); break; case IEEE80211_AMPDU_TX_STOP_CONT: ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid); break; case IEEE80211_AMPDU_TX_STOP_FLUSH: case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid); break; case IEEE80211_AMPDU_TX_OPERATIONAL: ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size); break; default: WARN_ON_ONCE(1); ret = -EINVAL; break; } mutex_unlock(&mvm->mutex); return ret; } static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, struct ieee80211_vif *vif) { struct iwl_mvm *mvm = data; struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); mvmvif->uploaded = false; mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; /* does this make sense at all? */ mvmvif->color++; spin_lock_bh(&mvm->time_event_lock); iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data); spin_unlock_bh(&mvm->time_event_lock); if (vif->type != NL80211_IFTYPE_P2P_DEVICE) mvmvif->phy_ctxt = NULL; } static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) { iwl_trans_stop_device(mvm->trans); iwl_trans_stop_hw(mvm->trans, false); mvm->scan_status = IWL_MVM_SCAN_NONE; /* just in case one was running */ ieee80211_remain_on_channel_expired(mvm->hw); ieee80211_iterate_active_interfaces_atomic( mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, iwl_mvm_cleanup_iterator, mvm); memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained)); ieee80211_wake_queues(mvm->hw); mvm->vif_count = 0; } static int iwl_mvm_mac_start(struct ieee80211_hw *hw) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); int ret; mutex_lock(&mvm->mutex); /* Clean up some internal and mac80211 state on restart */ if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) iwl_mvm_restart_cleanup(mvm); ret = iwl_mvm_up(mvm); mutex_unlock(&mvm->mutex); return ret; } static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); int ret; mutex_lock(&mvm->mutex); clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); ret = iwl_mvm_update_quotas(mvm, NULL); if (ret) IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", ret); mutex_unlock(&mvm->mutex); } static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); flush_work(&mvm->async_handlers_wk); mutex_lock(&mvm->mutex); /* async_handlers_wk is now blocked */ /* * The work item could be running or queued if the * ROC time event stops just as we get here. */ cancel_work_sync(&mvm->roc_done_wk); iwl_trans_stop_device(mvm->trans); iwl_trans_stop_hw(mvm->trans, false); iwl_mvm_async_handlers_purge(mvm); /* async_handlers_list is empty and will stay empty: HW is stopped */ /* the fw is stopped, the aux sta is dead: clean up driver state */ iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); mutex_unlock(&mvm->mutex); /* * The worker might have been waiting for the mutex, let it run and * discover that its list is now empty. */ cancel_work_sync(&mvm->async_handlers_wk); } static void iwl_mvm_pm_disable_iterator(void *data, u8 *mac, struct ieee80211_vif *vif) { struct iwl_mvm *mvm = data; int ret; ret = iwl_mvm_power_disable(mvm, vif); if (ret) IWL_ERR(mvm, "failed to disable power management\n"); } static void iwl_mvm_power_update_iterator(void *data, u8 *mac, struct ieee80211_vif *vif) { struct iwl_mvm *mvm = data; iwl_mvm_power_update_mode(mvm, vif); } static int iwl_mvm_mac_add_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); int ret; /* * Not much to do here. The stack will not allow interface * types or combinations that we didn't advertise, so we * don't really have to check the types. */ mutex_lock(&mvm->mutex); /* Allocate resources for the MAC context, and add it the the fw */ ret = iwl_mvm_mac_ctxt_init(mvm, vif); if (ret) goto out_unlock; /* * The AP binding flow can be done only after the beacon * template is configured (which happens only in the mac80211 * start_ap() flow), and adding the broadcast station can happen * only after the binding. * In addition, since modifying the MAC before adding a bcast * station is not allowed by the FW, delay the adding of MAC context to * the point where we can also add the bcast station. * In short: there's not much we can do at this point, other than * allocating resources :) */ if (vif->type == NL80211_IFTYPE_AP) { u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif); ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask); if (ret) { IWL_ERR(mvm, "Failed to allocate bcast sta\n"); goto out_release; } goto out_unlock; } /* * TODO: remove this temporary code. * Currently MVM FW supports power management only on single MAC. * If new interface added, disable PM on existing interface. * P2P device is a special case, since it is handled by FW similary to * scan. If P2P deviced is added, PM remains enabled on existing * interface. * Note: the method below does not count the new interface being added * at this moment. */ if (vif->type != NL80211_IFTYPE_P2P_DEVICE) mvm->vif_count++; if (mvm->vif_count > 1) { IWL_DEBUG_MAC80211(mvm, "Disable power on existing interfaces\n"); ieee80211_iterate_active_interfaces_atomic( mvm->hw, IEEE80211_IFACE_ITER_NORMAL, iwl_mvm_pm_disable_iterator, mvm); } ret = iwl_mvm_mac_ctxt_add(mvm, vif); if (ret) goto out_release; /* * Update power state on the new interface. Admittedly, based on * mac80211 logics this power update will disable power management */ iwl_mvm_power_update_mode(mvm, vif); /* beacon filtering */ if (!mvm->bf_allowed_vif && vif->type == NL80211_IFTYPE_STATION && !vif->p2p){ mvm->bf_allowed_vif = mvmvif; vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER; } ret = iwl_mvm_disable_beacon_filter(mvm, vif); if (ret) goto out_release; /* * P2P_DEVICE interface does not have a channel context assigned to it, * so a dedicated PHY context is allocated to it and the corresponding * MAC context is bound to it at this stage. */ if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { struct ieee80211_channel *chan; struct cfg80211_chan_def chandef; mvmvif->phy_ctxt = &mvm->phy_ctxt_roc; /* * The channel used here isn't relevant as it's * going to be overwritten as part of the ROC flow. * For now use the first channel we have. */ chan = &mvm->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0]; cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT); ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef, 1, 1); if (ret) goto out_remove_mac; ret = iwl_mvm_binding_add_vif(mvm, vif); if (ret) goto out_remove_phy; ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta); if (ret) goto out_unbind; /* Save a pointer to p2p device vif, so it can later be used to * update the p2p device MAC when a GO is started/stopped */ mvm->p2p_device_vif = vif; } iwl_mvm_vif_dbgfs_register(mvm, vif); goto out_unlock; out_unbind: iwl_mvm_binding_remove_vif(mvm, vif); out_remove_phy: iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt); out_remove_mac: mvmvif->phy_ctxt = NULL; iwl_mvm_mac_ctxt_remove(mvm, vif); out_release: /* * TODO: remove this temporary code. * Currently MVM FW supports power management only on single MAC. * Check if only one additional interface remains after releasing * current one. Update power mode on the remaining interface. */ if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 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_release(mvm, vif); out_unlock: mutex_unlock(&mvm->mutex); return ret; } 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); iwl_mvm_prepare_mac_removal(mvm, vif); mutex_lock(&mvm->mutex); if (mvm->bf_allowed_vif == mvmvif) { mvm->bf_allowed_vif = NULL; vif->driver_flags &= ~IEEE80211_VIF_BEACON_FILTER; } iwl_mvm_vif_dbgfs_clean(mvm, vif); /* * For AP/GO interface, the tear down of the resources allocated to the * interface is be handled as part of the stop_ap 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 && vif->type != NL80211_IFTYPE_P2P_DEVICE) 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); } static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) { return 0; } static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, unsigned int *total_flags, u64 multicast) { *total_flags = 0; } static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_bss_conf *bss_conf, u32 changes) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); int ret; ret = iwl_mvm_mac_ctxt_changed(mvm, vif); if (ret) IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); if (changes & BSS_CHANGED_ASSOC) { if (bss_conf->assoc) { /* add quota for this interface */ ret = iwl_mvm_update_quotas(mvm, vif); if (ret) { IWL_ERR(mvm, "failed to update quotas\n"); return; } iwl_mvm_bt_coex_vif_assoc(mvm, vif); } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { /* remove AP station now that the MAC is unassoc */ ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id); if (ret) IWL_ERR(mvm, "failed to remove AP station\n"); mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; /* remove quota for this interface */ ret = iwl_mvm_update_quotas(mvm, NULL); if (ret) IWL_ERR(mvm, "failed to update quotas\n"); } } else if (changes & BSS_CHANGED_DTIM_PERIOD) { /* * We received a beacon _after_ association so * remove the session protection. */ iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); } else if (changes & BSS_CHANGED_PS) { /* * TODO: remove this temporary code. * Currently MVM FW supports power management only on single * MAC. Avoid power mode update if more than one interface * is active. */ IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n", mvm->vif_count); if (mvm->vif_count == 1) { ret = iwl_mvm_power_update_mode(mvm, vif); if (ret) IWL_ERR(mvm, "failed to update power mode\n"); } } } static int iwl_mvm_start_ap(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); int ret; mutex_lock(&mvm->mutex); /* Send the beacon template */ ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); if (ret) goto out_unlock; /* Add the mac context */ ret = iwl_mvm_mac_ctxt_add(mvm, vif); if (ret) goto out_unlock; /* Perform the binding */ ret = iwl_mvm_binding_add_vif(mvm, vif); if (ret) goto out_remove; mvmvif->ap_active = true; /* Send the bcast station. At this stage the TBTT and DTIM time events * are added and applied to the scheduler */ ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta); if (ret) goto out_unbind; ret = iwl_mvm_update_quotas(mvm, vif); if (ret) goto out_rm_bcast; /* Need to update the P2P Device MAC */ if (vif->p2p && mvm->p2p_device_vif) iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif); mutex_unlock(&mvm->mutex); return 0; out_rm_bcast: iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta); out_unbind: iwl_mvm_binding_remove_vif(mvm, vif); out_remove: iwl_mvm_mac_ctxt_remove(mvm, vif); out_unlock: mutex_unlock(&mvm->mutex); return ret; } static void iwl_mvm_stop_ap(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); iwl_mvm_prepare_mac_removal(mvm, vif); mutex_lock(&mvm->mutex); mvmvif->ap_active = false; /* Need to update the P2P Device MAC */ if (vif->p2p && mvm->p2p_device_vif) iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif); iwl_mvm_update_quotas(mvm, NULL); iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta); iwl_mvm_binding_remove_vif(mvm, vif); iwl_mvm_mac_ctxt_remove(mvm, vif); mutex_unlock(&mvm->mutex); } static void iwl_mvm_bss_info_changed_ap(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_bss_conf *bss_conf, u32 changes) { /* Need to send a new beacon template to the FW */ if (changes & BSS_CHANGED_BEACON) { if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) IWL_WARN(mvm, "Failed updating beacon data\n"); } } static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_bss_conf *bss_conf, u32 changes) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); mutex_lock(&mvm->mutex); switch (vif->type) { case NL80211_IFTYPE_STATION: iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); break; case NL80211_IFTYPE_AP: iwl_mvm_bss_info_changed_ap(mvm, vif, bss_conf, changes); break; default: /* shouldn't happen */ WARN_ON_ONCE(1); } mutex_unlock(&mvm->mutex); } static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct cfg80211_scan_request *req) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); int ret; if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS) return -EINVAL; mutex_lock(&mvm->mutex); if (mvm->scan_status == IWL_MVM_SCAN_NONE) ret = iwl_mvm_scan_request(mvm, vif, req); else ret = -EBUSY; mutex_unlock(&mvm->mutex); return ret; } static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); mutex_lock(&mvm->mutex); iwl_mvm_cancel_scan(mvm); mutex_unlock(&mvm->mutex); } static void iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u16 tid, int num_frames, enum ieee80211_frame_release_type reason, bool more_data) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); /* TODO: how do we tell the fw to send frames for a specific TID */ /* * The fw will send EOSP notification when the last frame will be * transmitted. */ iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames); } static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, struct ieee80211_vif *vif, enum sta_notify_cmd cmd, struct ieee80211_sta *sta) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv; switch (cmd) { case STA_NOTIFY_SLEEP: if (atomic_read(&mvmsta->pending_frames) > 0) ieee80211_sta_block_awake(hw, sta, true); /* * The fw updates the STA to be asleep. Tx packets on the Tx * queues to this station will not be transmitted. The fw will * send a Tx response with TX_STATUS_FAIL_DEST_PS. */ break; case STA_NOTIFY_AWAKE: if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT)) break; iwl_mvm_sta_modify_ps_wake(mvm, sta); break; default: break; } } static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta, enum ieee80211_sta_state old_state, enum ieee80211_sta_state new_state) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); int ret; IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", sta->addr, old_state, new_state); /* this would be a mac80211 bug ... but don't crash */ if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) return -EINVAL; /* if a STA is being removed, reuse its ID */ flush_work(&mvm->sta_drained_wk); mutex_lock(&mvm->mutex); if (old_state == IEEE80211_STA_NOTEXIST && new_state == IEEE80211_STA_NONE) { ret = iwl_mvm_add_sta(mvm, vif, sta); } else if (old_state == IEEE80211_STA_NONE && new_state == IEEE80211_STA_AUTH) { ret = 0; } else if (old_state == IEEE80211_STA_AUTH && new_state == IEEE80211_STA_ASSOC) { ret = iwl_mvm_update_sta(mvm, vif, sta); if (ret == 0) iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band); } else if (old_state == IEEE80211_STA_ASSOC && new_state == IEEE80211_STA_AUTHORIZED) { /* enable beacon filtering */ WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif)); ret = 0; } else if (old_state == IEEE80211_STA_AUTHORIZED && new_state == IEEE80211_STA_ASSOC) { /* disable beacon filtering */ WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif)); ret = 0; } else if (old_state == IEEE80211_STA_ASSOC && new_state == IEEE80211_STA_AUTH) { ret = 0; } else if (old_state == IEEE80211_STA_AUTH && new_state == IEEE80211_STA_NONE) { ret = 0; } else if (old_state == IEEE80211_STA_NONE && new_state == IEEE80211_STA_NOTEXIST) { ret = iwl_mvm_rm_sta(mvm, vif, sta); } else { ret = -EIO; } mutex_unlock(&mvm->mutex); return ret; } static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); mvm->rts_threshold = value; return 0; } static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 ac, const struct ieee80211_tx_queue_params *params) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); mvmvif->queue_params[ac] = *params; /* * No need to update right away, we'll get BSS_CHANGED_QOS * The exception is P2P_DEVICE interface which needs immediate update. */ if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { int ret; mutex_lock(&mvm->mutex); ret = iwl_mvm_mac_ctxt_changed(mvm, vif); mutex_unlock(&mvm->mutex); return ret; } return 0; } static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS, 200 + vif->bss_conf.beacon_int); u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS, 100 + vif->bss_conf.beacon_int); if (WARN_ON_ONCE(vif->bss_conf.assoc)) return; mutex_lock(&mvm->mutex); /* Try really hard to protect the session and hear a beacon */ iwl_mvm_protect_session(mvm, vif, duration, min_duration); mutex_unlock(&mvm->mutex); } static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct ieee80211_key_conf *key) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); int ret; if (iwlwifi_mod_params.sw_crypto) { IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n"); return -EOPNOTSUPP; } switch (key->cipher) { case WLAN_CIPHER_SUITE_TKIP: key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; /* fall-through */ case WLAN_CIPHER_SUITE_CCMP: key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; break; case WLAN_CIPHER_SUITE_AES_CMAC: WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE)); break; case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_WEP104: /* * Support for TX only, at least for now, so accept * the key and do nothing else. Then mac80211 will * pass it for TX but we don't have to use it for RX. */ return 0; default: return -EOPNOTSUPP; } mutex_lock(&mvm->mutex); switch (cmd) { case SET_KEY: if (vif->type == NL80211_IFTYPE_AP && !sta) { /* GTK on AP interface is a TX-only key, return 0 */ ret = 0; key->hw_key_idx = STA_KEY_IDX_INVALID; break; } IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false); if (ret) { IWL_WARN(mvm, "set key failed\n"); /* * can't add key for RX, but we don't need it * in the device for TX so still return 0 */ key->hw_key_idx = STA_KEY_IDX_INVALID; ret = 0; } break; case DISABLE_KEY: if (key->hw_key_idx == STA_KEY_IDX_INVALID) { ret = 0; break; } IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); break; default: ret = -EINVAL; } mutex_unlock(&mvm->mutex); return ret; } static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_key_conf *keyconf, struct ieee80211_sta *sta, u32 iv32, u16 *phase1key) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); } static int iwl_mvm_roc(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_channel *channel, int duration, enum ieee80211_roc_type type) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct cfg80211_chan_def chandef; int ret; if (vif->type != NL80211_IFTYPE_P2P_DEVICE) { IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type); return -EINVAL; } IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, duration, type); mutex_lock(&mvm->mutex); cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); ret = iwl_mvm_phy_ctxt_changed(mvm, &mvm->phy_ctxt_roc, &chandef, 1, 1); /* Schedule the time events */ ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); mutex_unlock(&mvm->mutex); IWL_DEBUG_MAC80211(mvm, "leave\n"); return ret; } static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); IWL_DEBUG_MAC80211(mvm, "enter\n"); mutex_lock(&mvm->mutex); iwl_mvm_stop_p2p_roc(mvm); mutex_unlock(&mvm->mutex); IWL_DEBUG_MAC80211(mvm, "leave\n"); return 0; } static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *ctx) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv; int ret; mutex_lock(&mvm->mutex); IWL_DEBUG_MAC80211(mvm, "Add PHY context\n"); ret = iwl_mvm_phy_ctxt_add(mvm, phy_ctxt, &ctx->def, ctx->rx_chains_static, ctx->rx_chains_dynamic); mutex_unlock(&mvm->mutex); return ret; } static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *ctx) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv; mutex_lock(&mvm->mutex); iwl_mvm_phy_ctxt_remove(mvm, phy_ctxt); mutex_unlock(&mvm->mutex); } static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *ctx, u32 changed) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv; mutex_lock(&mvm->mutex); iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def, ctx->rx_chains_static, ctx->rx_chains_dynamic); mutex_unlock(&mvm->mutex); } static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_chanctx_conf *ctx) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct iwl_mvm_phy_ctxt *phyctx = (void *)ctx->drv_priv; struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); int ret; mutex_lock(&mvm->mutex); mvmvif->phy_ctxt = phyctx; switch (vif->type) { case NL80211_IFTYPE_AP: /* * The AP binding flow is handled as part of the start_ap flow * (in bss_info_changed). */ ret = 0; goto out_unlock; case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_ADHOC: case NL80211_IFTYPE_MONITOR: break; default: ret = -EINVAL; goto out_unlock; } ret = iwl_mvm_binding_add_vif(mvm, vif); if (ret) goto out_unlock; /* * Setting the quota at this stage is only required for monitor * interfaces. For the other types, the bss_info changed flow * will handle quota settings. */ if (vif->type == NL80211_IFTYPE_MONITOR) { mvmvif->monitor_active = true; ret = iwl_mvm_update_quotas(mvm, vif); if (ret) goto out_remove_binding; } goto out_unlock; out_remove_binding: iwl_mvm_binding_remove_vif(mvm, vif); out_unlock: mutex_unlock(&mvm->mutex); if (ret) mvmvif->phy_ctxt = NULL; return ret; } static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_chanctx_conf *ctx) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); mutex_lock(&mvm->mutex); iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); if (vif->type == NL80211_IFTYPE_AP) goto out_unlock; switch (vif->type) { case NL80211_IFTYPE_MONITOR: mvmvif->monitor_active = false; iwl_mvm_update_quotas(mvm, NULL); break; default: break; } iwl_mvm_binding_remove_vif(mvm, vif); out_unlock: mvmvif->phy_ctxt = NULL; mutex_unlock(&mvm->mutex); } static int iwl_mvm_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv; if (!mvm_sta || !mvm_sta->vif) { IWL_ERR(mvm, "Station is not associated to a vif\n"); return -EINVAL; } return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); } static void iwl_mvm_mac_rssi_callback(struct ieee80211_hw *hw, struct ieee80211_vif *vif, enum ieee80211_rssi_event rssi_event) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); iwl_mvm_bt_rssi_event(mvm, vif, rssi_event); } struct ieee80211_ops iwl_mvm_hw_ops = { .tx = iwl_mvm_mac_tx, .ampdu_action = iwl_mvm_mac_ampdu_action, .start = iwl_mvm_mac_start, .restart_complete = iwl_mvm_mac_restart_complete, .stop = iwl_mvm_mac_stop, .add_interface = iwl_mvm_mac_add_interface, .remove_interface = iwl_mvm_mac_remove_interface, .config = iwl_mvm_mac_config, .configure_filter = iwl_mvm_configure_filter, .bss_info_changed = iwl_mvm_bss_info_changed, .hw_scan = iwl_mvm_mac_hw_scan, .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, .sta_state = iwl_mvm_mac_sta_state, .sta_notify = iwl_mvm_mac_sta_notify, .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, .conf_tx = iwl_mvm_mac_conf_tx, .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, .set_key = iwl_mvm_mac_set_key, .update_tkip_key = iwl_mvm_mac_update_tkip_key, .remain_on_channel = iwl_mvm_roc, .cancel_remain_on_channel = iwl_mvm_cancel_roc, .rssi_callback = iwl_mvm_mac_rssi_callback, .add_chanctx = iwl_mvm_add_chanctx, .remove_chanctx = iwl_mvm_remove_chanctx, .change_chanctx = iwl_mvm_change_chanctx, .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, .start_ap = iwl_mvm_start_ap, .stop_ap = iwl_mvm_stop_ap, .set_tim = iwl_mvm_set_tim, #ifdef CONFIG_PM_SLEEP /* look at d3.c */ .suspend = iwl_mvm_suspend, .resume = iwl_mvm_resume, .set_wakeup = iwl_mvm_set_wakeup, .set_rekey_data = iwl_mvm_set_rekey_data, #if IS_ENABLED(CONFIG_IPV6) .ipv6_addr_change = iwl_mvm_ipv6_addr_change, #endif .set_default_unicast_key = iwl_mvm_set_default_unicast_key, #endif };