diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c | 1452 |
1 files changed, 0 insertions, 1452 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c deleted file mode 100644 index ad7ad720d2e7..000000000000 --- a/drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c +++ /dev/null @@ -1,1452 +0,0 @@ -/****************************************************************************** - * - * 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 - 2014 Intel Corporation. All rights reserved. - * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH - * Copyright(c) 2015 Intel Deutschland GmbH - * - * 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 <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - * BSD LICENSE - * - * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. - * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH - * Copyright(c) 2015 Intel Deutschland GmbH - * 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 <linux/etherdevice.h> -#include <net/mac80211.h> -#include "iwl-io.h" -#include "iwl-prph.h" -#include "fw-api.h" -#include "mvm.h" -#include "time-event.h" - -const u8 iwl_mvm_ac_to_tx_fifo[] = { - IWL_MVM_TX_FIFO_VO, - IWL_MVM_TX_FIFO_VI, - IWL_MVM_TX_FIFO_BE, - IWL_MVM_TX_FIFO_BK, -}; - -struct iwl_mvm_mac_iface_iterator_data { - struct iwl_mvm *mvm; - struct ieee80211_vif *vif; - unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)]; - unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)]; - enum iwl_tsf_id preferred_tsf; - bool found_vif; -}; - -struct iwl_mvm_hw_queues_iface_iterator_data { - struct ieee80211_vif *exclude_vif; - unsigned long used_hw_queues; -}; - -static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac, - struct ieee80211_vif *vif) -{ - struct iwl_mvm_mac_iface_iterator_data *data = _data; - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - u16 min_bi; - - /* Skip the interface for which we are trying to assign a tsf_id */ - if (vif == data->vif) - return; - - /* - * The TSF is a hardware/firmware resource, there are 4 and - * the driver should assign and free them as needed. However, - * there are cases where 2 MACs should share the same TSF ID - * for the purpose of clock sync, an optimization to avoid - * clock drift causing overlapping TBTTs/DTIMs for a GO and - * client in the system. - * - * The firmware will decide according to the MAC type which - * will be the master and slave. Clients that need to sync - * with a remote station will be the master, and an AP or GO - * will be the slave. - * - * Depending on the new interface type it can be slaved to - * or become the master of an existing interface. - */ - switch (data->vif->type) { - case NL80211_IFTYPE_STATION: - /* - * The new interface is a client, so if the one we're iterating - * is an AP, and the beacon interval of the AP is a multiple or - * divisor of the beacon interval of the client, the same TSF - * should be used to avoid drift between the new client and - * existing AP. The existing AP will get drift updates from the - * new client context in this case. - */ - if (vif->type != NL80211_IFTYPE_AP || - data->preferred_tsf != NUM_TSF_IDS || - !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) - break; - - min_bi = min(data->vif->bss_conf.beacon_int, - vif->bss_conf.beacon_int); - - if (!min_bi) - break; - - if ((data->vif->bss_conf.beacon_int - - vif->bss_conf.beacon_int) % min_bi == 0) { - data->preferred_tsf = mvmvif->tsf_id; - return; - } - break; - - case NL80211_IFTYPE_AP: - /* - * The new interface is AP/GO, so if its beacon interval is a - * multiple or a divisor of the beacon interval of an existing - * interface, it should get drift updates from an existing - * client or use the same TSF as an existing GO. There's no - * drift between TSFs internally but if they used different - * TSFs then a new client MAC could update one of them and - * cause drift that way. - */ - if ((vif->type != NL80211_IFTYPE_AP && - vif->type != NL80211_IFTYPE_STATION) || - data->preferred_tsf != NUM_TSF_IDS || - !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) - break; - - min_bi = min(data->vif->bss_conf.beacon_int, - vif->bss_conf.beacon_int); - - if (!min_bi) - break; - - if ((data->vif->bss_conf.beacon_int - - vif->bss_conf.beacon_int) % min_bi == 0) { - data->preferred_tsf = mvmvif->tsf_id; - return; - } - break; - default: - /* - * For all other interface types there's no need to - * take drift into account. Either they're exclusive - * like IBSS and monitor, or we don't care much about - * their TSF (like P2P Device), but we won't be able - * to share the TSF resource. - */ - break; - } - - /* - * Unless we exited above, we can't share the TSF resource - * that the virtual interface we're iterating over is using - * with the new one, so clear the available bit and if this - * was the preferred one, reset that as well. - */ - __clear_bit(mvmvif->tsf_id, data->available_tsf_ids); - - if (data->preferred_tsf == mvmvif->tsf_id) - data->preferred_tsf = NUM_TSF_IDS; -} - -/* - * Get the mask of the queues used by the vif - */ -u32 iwl_mvm_mac_get_queues_mask(struct ieee80211_vif *vif) -{ - u32 qmask = 0, ac; - - if (vif->type == NL80211_IFTYPE_P2P_DEVICE) - return BIT(IWL_MVM_OFFCHANNEL_QUEUE); - - for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { - if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) - qmask |= BIT(vif->hw_queue[ac]); - } - - if (vif->type == NL80211_IFTYPE_AP) - qmask |= BIT(vif->cab_queue); - - return qmask; -} - -static void iwl_mvm_iface_hw_queues_iter(void *_data, u8 *mac, - struct ieee80211_vif *vif) -{ - struct iwl_mvm_hw_queues_iface_iterator_data *data = _data; - - /* exclude the given vif */ - if (vif == data->exclude_vif) - return; - - data->used_hw_queues |= iwl_mvm_mac_get_queues_mask(vif); -} - -static void iwl_mvm_mac_sta_hw_queues_iter(void *_data, - struct ieee80211_sta *sta) -{ - struct iwl_mvm_hw_queues_iface_iterator_data *data = _data; - struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); - - /* Mark the queues used by the sta */ - data->used_hw_queues |= mvmsta->tfd_queue_msk; -} - -unsigned long iwl_mvm_get_used_hw_queues(struct iwl_mvm *mvm, - struct ieee80211_vif *exclude_vif) -{ - u8 sta_id; - struct iwl_mvm_hw_queues_iface_iterator_data data = { - .exclude_vif = exclude_vif, - .used_hw_queues = - BIT(IWL_MVM_OFFCHANNEL_QUEUE) | - BIT(mvm->aux_queue) | - BIT(IWL_MVM_CMD_QUEUE), - }; - - lockdep_assert_held(&mvm->mutex); - - /* mark all VIF used hw queues */ - ieee80211_iterate_active_interfaces_atomic( - mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, - iwl_mvm_iface_hw_queues_iter, &data); - - /* don't assign the same hw queues as TDLS stations */ - ieee80211_iterate_stations_atomic(mvm->hw, - iwl_mvm_mac_sta_hw_queues_iter, - &data); - - /* - * Some TDLS stations may be removed but are in the process of being - * drained. Don't touch their queues. - */ - for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) - data.used_hw_queues |= mvm->tfd_drained[sta_id]; - - return data.used_hw_queues; -} - -static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac, - struct ieee80211_vif *vif) -{ - struct iwl_mvm_mac_iface_iterator_data *data = _data; - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - - /* Iterator may already find the interface being added -- skip it */ - if (vif == data->vif) { - data->found_vif = true; - return; - } - - /* Mark MAC IDs as used by clearing the available bit, and - * (below) mark TSFs as used if their existing use is not - * compatible with the new interface type. - * No locking or atomic bit operations are needed since the - * data is on the stack of the caller function. - */ - __clear_bit(mvmvif->id, data->available_mac_ids); - - /* find a suitable tsf_id */ - iwl_mvm_mac_tsf_id_iter(_data, mac, vif); -} - -void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm, - struct ieee80211_vif *vif) -{ - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - struct iwl_mvm_mac_iface_iterator_data data = { - .mvm = mvm, - .vif = vif, - .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, - /* no preference yet */ - .preferred_tsf = NUM_TSF_IDS, - }; - - ieee80211_iterate_active_interfaces_atomic( - mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, - iwl_mvm_mac_tsf_id_iter, &data); - - if (data.preferred_tsf != NUM_TSF_IDS) - mvmvif->tsf_id = data.preferred_tsf; - else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids)) - mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, - NUM_TSF_IDS); -} - -static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm *mvm, - struct ieee80211_vif *vif) -{ - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - struct iwl_mvm_mac_iface_iterator_data data = { - .mvm = mvm, - .vif = vif, - .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 }, - .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, - /* no preference yet */ - .preferred_tsf = NUM_TSF_IDS, - .found_vif = false, - }; - u32 ac; - int ret, i; - unsigned long used_hw_queues; - - /* - * Allocate a MAC ID and a TSF for this MAC, along with the queues - * and other resources. - */ - - /* - * Before the iterator, we start with all MAC IDs and TSFs available. - * - * During iteration, all MAC IDs are cleared that are in use by other - * virtual interfaces, and all TSF IDs are cleared that can't be used - * by this new virtual interface because they're used by an interface - * that can't share it with the new one. - * At the same time, we check if there's a preferred TSF in the case - * that we should share it with another interface. - */ - - /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */ - switch (vif->type) { - case NL80211_IFTYPE_ADHOC: - break; - case NL80211_IFTYPE_STATION: - if (!vif->p2p) - break; - /* fall through */ - default: - __clear_bit(0, data.available_mac_ids); - } - - ieee80211_iterate_active_interfaces_atomic( - mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, - iwl_mvm_mac_iface_iterator, &data); - - used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, vif); - - /* - * In the case we're getting here during resume, it's similar to - * firmware restart, and with RESUME_ALL the iterator will find - * the vif being added already. - * We don't want to reassign any IDs in either case since doing - * so would probably assign different IDs (as interfaces aren't - * necessarily added in the same order), but the old IDs were - * preserved anyway, so skip ID assignment for both resume and - * recovery. - */ - if (data.found_vif) - return 0; - - /* Therefore, in recovery, we can't get here */ - if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) - return -EBUSY; - - mvmvif->id = find_first_bit(data.available_mac_ids, - NUM_MAC_INDEX_DRIVER); - if (mvmvif->id == NUM_MAC_INDEX_DRIVER) { - IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n"); - ret = -EIO; - goto exit_fail; - } - - if (data.preferred_tsf != NUM_TSF_IDS) - mvmvif->tsf_id = data.preferred_tsf; - else - mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, - NUM_TSF_IDS); - if (mvmvif->tsf_id == NUM_TSF_IDS) { - IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n"); - ret = -EIO; - goto exit_fail; - } - - mvmvif->color = 0; - - INIT_LIST_HEAD(&mvmvif->time_event_data.list); - mvmvif->time_event_data.id = TE_MAX; - - /* No need to allocate data queues to P2P Device MAC.*/ - if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { - for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) - vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE; - - return 0; - } - - /* Find available queues, and allocate them to the ACs */ - for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { - u8 queue = find_first_zero_bit(&used_hw_queues, - mvm->first_agg_queue); - - if (queue >= mvm->first_agg_queue) { - IWL_ERR(mvm, "Failed to allocate queue\n"); - ret = -EIO; - goto exit_fail; - } - - __set_bit(queue, &used_hw_queues); - vif->hw_queue[ac] = queue; - } - - /* Allocate the CAB queue for softAP and GO interfaces */ - if (vif->type == NL80211_IFTYPE_AP) { - u8 queue = find_first_zero_bit(&used_hw_queues, - mvm->first_agg_queue); - - if (queue >= mvm->first_agg_queue) { - IWL_ERR(mvm, "Failed to allocate cab queue\n"); - ret = -EIO; - goto exit_fail; - } - - vif->cab_queue = queue; - } else { - vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; - } - - mvmvif->bcast_sta.sta_id = IWL_MVM_STATION_COUNT; - mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; - - for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) - mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC; - - return 0; - -exit_fail: - memset(mvmvif, 0, sizeof(struct iwl_mvm_vif)); - memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue)); - vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; - return ret; -} - -int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif) -{ - unsigned int wdg_timeout = - iwl_mvm_get_wd_timeout(mvm, vif, false, false); - u32 ac; - int ret; - - lockdep_assert_held(&mvm->mutex); - - ret = iwl_mvm_mac_ctxt_allocate_resources(mvm, vif); - if (ret) - return ret; - - switch (vif->type) { - case NL80211_IFTYPE_P2P_DEVICE: - iwl_mvm_enable_ac_txq(mvm, IWL_MVM_OFFCHANNEL_QUEUE, - IWL_MVM_OFFCHANNEL_QUEUE, - IWL_MVM_TX_FIFO_VO, 0, wdg_timeout); - break; - case NL80211_IFTYPE_AP: - iwl_mvm_enable_ac_txq(mvm, vif->cab_queue, vif->cab_queue, - IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout); - /* fall through */ - default: - for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) - iwl_mvm_enable_ac_txq(mvm, vif->hw_queue[ac], - vif->hw_queue[ac], - iwl_mvm_ac_to_tx_fifo[ac], 0, - wdg_timeout); - break; - } - - return 0; -} - -void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif) -{ - int ac; - - lockdep_assert_held(&mvm->mutex); - - switch (vif->type) { - case NL80211_IFTYPE_P2P_DEVICE: - iwl_mvm_disable_txq(mvm, IWL_MVM_OFFCHANNEL_QUEUE, - IWL_MVM_OFFCHANNEL_QUEUE, IWL_MAX_TID_COUNT, - 0); - break; - case NL80211_IFTYPE_AP: - iwl_mvm_disable_txq(mvm, vif->cab_queue, vif->cab_queue, - IWL_MAX_TID_COUNT, 0); - /* fall through */ - default: - for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) - iwl_mvm_disable_txq(mvm, vif->hw_queue[ac], - vif->hw_queue[ac], - IWL_MAX_TID_COUNT, 0); - } -} - -static void iwl_mvm_ack_rates(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - enum ieee80211_band band, - u8 *cck_rates, u8 *ofdm_rates) -{ - struct ieee80211_supported_band *sband; - unsigned long basic = vif->bss_conf.basic_rates; - int lowest_present_ofdm = 100; - int lowest_present_cck = 100; - u8 cck = 0; - u8 ofdm = 0; - int i; - - sband = mvm->hw->wiphy->bands[band]; - - for_each_set_bit(i, &basic, BITS_PER_LONG) { - int hw = sband->bitrates[i].hw_value; - if (hw >= IWL_FIRST_OFDM_RATE) { - ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE); - if (lowest_present_ofdm > hw) - lowest_present_ofdm = hw; - } else { - BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); - - cck |= BIT(hw); - if (lowest_present_cck > hw) - lowest_present_cck = hw; - } - } - - /* - * Now we've got the basic rates as bitmaps in the ofdm and cck - * variables. This isn't sufficient though, as there might not - * be all the right rates in the bitmap. E.g. if the only basic - * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps - * and 6 Mbps because the 802.11-2007 standard says in 9.6: - * - * [...] a STA responding to a received frame shall transmit - * its Control Response frame [...] at the highest rate in the - * BSSBasicRateSet parameter that is less than or equal to the - * rate of the immediately previous frame in the frame exchange - * sequence ([...]) and that is of the same modulation class - * ([...]) as the received frame. If no rate contained in the - * BSSBasicRateSet parameter meets these conditions, then the - * control frame sent in response to a received frame shall be - * transmitted at the highest mandatory rate of the PHY that is - * less than or equal to the rate of the received frame, and - * that is of the same modulation class as the received frame. - * - * As a consequence, we need to add all mandatory rates that are - * lower than all of the basic rates to these bitmaps. - */ - - if (IWL_RATE_24M_INDEX < lowest_present_ofdm) - ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE; - if (IWL_RATE_12M_INDEX < lowest_present_ofdm) - ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE; - /* 6M already there or needed so always add */ - ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE; - - /* - * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP. - * Note, however: - * - if no CCK rates are basic, it must be ERP since there must - * be some basic rates at all, so they're OFDM => ERP PHY - * (or we're in 5 GHz, and the cck bitmap will never be used) - * - if 11M is a basic rate, it must be ERP as well, so add 5.5M - * - if 5.5M is basic, 1M and 2M are mandatory - * - if 2M is basic, 1M is mandatory - * - if 1M is basic, that's the only valid ACK rate. - * As a consequence, it's not as complicated as it sounds, just add - * any lower rates to the ACK rate bitmap. - */ - if (IWL_RATE_11M_INDEX < lowest_present_cck) - cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE; - if (IWL_RATE_5M_INDEX < lowest_present_cck) - cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE; - if (IWL_RATE_2M_INDEX < lowest_present_cck) - cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE; - /* 1M already there or needed so always add */ - cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE; - - *cck_rates = cck; - *ofdm_rates = ofdm; -} - -static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - struct iwl_mac_ctx_cmd *cmd) -{ - /* for both sta and ap, ht_operation_mode hold the protection_mode */ - u8 protection_mode = vif->bss_conf.ht_operation_mode & - IEEE80211_HT_OP_MODE_PROTECTION; - /* The fw does not distinguish between ht and fat */ - u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT; - - IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode); - /* - * See section 9.23.3.1 of IEEE 80211-2012. - * Nongreenfield HT STAs Present is not supported. - */ - switch (protection_mode) { - case IEEE80211_HT_OP_MODE_PROTECTION_NONE: - break; - case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER: - case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: - cmd->protection_flags |= cpu_to_le32(ht_flag); - break; - case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: - /* Protect when channel wider than 20MHz */ - if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20) - cmd->protection_flags |= cpu_to_le32(ht_flag); - break; - default: - IWL_ERR(mvm, "Illegal protection mode %d\n", - protection_mode); - break; - } -} - -static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - struct iwl_mac_ctx_cmd *cmd, - const u8 *bssid_override, - u32 action) -{ - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - struct ieee80211_chanctx_conf *chanctx; - bool ht_enabled = !!(vif->bss_conf.ht_operation_mode & - IEEE80211_HT_OP_MODE_PROTECTION); - u8 cck_ack_rates, ofdm_ack_rates; - const u8 *bssid = bssid_override ?: vif->bss_conf.bssid; - int i; - - cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, - mvmvif->color)); - cmd->action = cpu_to_le32(action); - - switch (vif->type) { - case NL80211_IFTYPE_STATION: - if (vif->p2p) - cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA); - else - cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA); - break; - case NL80211_IFTYPE_AP: - cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO); - break; - case NL80211_IFTYPE_MONITOR: - cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER); - break; - case NL80211_IFTYPE_P2P_DEVICE: - cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE); - break; - case NL80211_IFTYPE_ADHOC: - cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS); - break; - default: - WARN_ON_ONCE(1); - } - - cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id); - - memcpy(cmd->node_addr, vif->addr, ETH_ALEN); - - if (bssid) - memcpy(cmd->bssid_addr, bssid, ETH_ALEN); - else - eth_broadcast_addr(cmd->bssid_addr); - - rcu_read_lock(); - chanctx = rcu_dereference(vif->chanctx_conf); - iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band - : IEEE80211_BAND_2GHZ, - &cck_ack_rates, &ofdm_ack_rates); - rcu_read_unlock(); - - cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates); - cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates); - - cmd->cck_short_preamble = - cpu_to_le32(vif->bss_conf.use_short_preamble ? - MAC_FLG_SHORT_PREAMBLE : 0); - cmd->short_slot = - cpu_to_le32(vif->bss_conf.use_short_slot ? - MAC_FLG_SHORT_SLOT : 0); - - for (i = 0; i < IEEE80211_NUM_ACS; i++) { - u8 txf = iwl_mvm_ac_to_tx_fifo[i]; - - cmd->ac[txf].cw_min = - cpu_to_le16(mvmvif->queue_params[i].cw_min); - cmd->ac[txf].cw_max = - cpu_to_le16(mvmvif->queue_params[i].cw_max); - cmd->ac[txf].edca_txop = - cpu_to_le16(mvmvif->queue_params[i].txop * 32); - cmd->ac[txf].aifsn = mvmvif->queue_params[i].aifs; - cmd->ac[txf].fifos_mask = BIT(txf); - } - - /* in AP mode, the MCAST FIFO takes the EDCA params from VO */ - if (vif->type == NL80211_IFTYPE_AP) - cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= - BIT(IWL_MVM_TX_FIFO_MCAST); - - if (vif->bss_conf.qos) - cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA); - - if (vif->bss_conf.use_cts_prot) - cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); - - IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n", - vif->bss_conf.use_cts_prot, - vif->bss_conf.ht_operation_mode); - if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) - cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN); - if (ht_enabled) - iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd); - - cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP); -} - -static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm, - struct iwl_mac_ctx_cmd *cmd) -{ - int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, - sizeof(*cmd), cmd); - if (ret) - IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n", - le32_to_cpu(cmd->action), ret); - return ret; -} - -static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - u32 action, bool force_assoc_off, - const u8 *bssid_override) -{ - struct iwl_mac_ctx_cmd cmd = {}; - struct iwl_mac_data_sta *ctxt_sta; - - WARN_ON(vif->type != NL80211_IFTYPE_STATION); - - /* Fill the common data for all mac context types */ - iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action); - - if (vif->p2p) { - struct ieee80211_p2p_noa_attr *noa = - &vif->bss_conf.p2p_noa_attr; - - cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow & - IEEE80211_P2P_OPPPS_CTWINDOW_MASK); - ctxt_sta = &cmd.p2p_sta.sta; - } else { - ctxt_sta = &cmd.sta; - } - - /* We need the dtim_period to set the MAC as associated */ - if (vif->bss_conf.assoc && vif->bss_conf.dtim_period && - !force_assoc_off) { - u32 dtim_offs; - - /* - * The DTIM count counts down, so when it is N that means N - * more beacon intervals happen until the DTIM TBTT. Therefore - * add this to the current time. If that ends up being in the - * future, the firmware will handle it. - * - * Also note that the system_timestamp (which we get here as - * "sync_device_ts") and TSF timestamp aren't at exactly the - * same offset in the frame -- the TSF is at the first symbol - * of the TSF, the system timestamp is at signal acquisition - * time. This means there's an offset between them of at most - * a few hundred microseconds (24 * 8 bits + PLCP time gives - * 384us in the longest case), this is currently not relevant - * as the firmware wakes up around 2ms before the TBTT. - */ - dtim_offs = vif->bss_conf.sync_dtim_count * - vif->bss_conf.beacon_int; - /* convert TU to usecs */ - dtim_offs *= 1024; - - ctxt_sta->dtim_tsf = - cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs); - ctxt_sta->dtim_time = - cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs); - - IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n", - le64_to_cpu(ctxt_sta->dtim_tsf), - le32_to_cpu(ctxt_sta->dtim_time), - dtim_offs); - - ctxt_sta->is_assoc = cpu_to_le32(1); - } else { - ctxt_sta->is_assoc = cpu_to_le32(0); - - /* Allow beacons to pass through as long as we are not - * associated, or we do not have dtim period information. - */ - cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); - } - - ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int); - ctxt_sta->bi_reciprocal = - cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); - ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * - vif->bss_conf.dtim_period); - ctxt_sta->dtim_reciprocal = - cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int * - vif->bss_conf.dtim_period)); - - ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval); - ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid); - - if (vif->probe_req_reg && vif->bss_conf.assoc && vif->p2p) - cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); - - return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); -} - -static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - u32 action) -{ - struct iwl_mac_ctx_cmd cmd = {}; - - WARN_ON(vif->type != NL80211_IFTYPE_MONITOR); - - iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); - - cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC | - MAC_FILTER_IN_CONTROL_AND_MGMT | - MAC_FILTER_IN_BEACON | - MAC_FILTER_IN_PROBE_REQUEST | - MAC_FILTER_IN_CRC32); - ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS); - - return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); -} - -static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - u32 action) -{ - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - struct iwl_mac_ctx_cmd cmd = {}; - - WARN_ON(vif->type != NL80211_IFTYPE_ADHOC); - - iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); - - cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON | - MAC_FILTER_IN_PROBE_REQUEST); - - /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */ - cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int); - cmd.ibss.bi_reciprocal = - cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); - - /* TODO: Assumes that the beacon id == mac context id */ - cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id); - - return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); -} - -struct iwl_mvm_go_iterator_data { - bool go_active; -}; - -static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) -{ - struct iwl_mvm_go_iterator_data *data = _data; - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - - if (vif->type == NL80211_IFTYPE_AP && vif->p2p && - mvmvif->ap_ibss_active) - data->go_active = true; -} - -static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - u32 action) -{ - struct iwl_mac_ctx_cmd cmd = {}; - struct iwl_mvm_go_iterator_data data = {}; - - WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE); - - iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); - - cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); - - /* Override the filter flags to accept only probe requests */ - cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); - - /* - * This flag should be set to true when the P2P Device is - * discoverable and there is at least another active P2P GO. Settings - * this flag will allow the P2P Device to be discoverable on other - * channels in addition to its listen channel. - * Note that this flag should not be set in other cases as it opens the - * Rx filters on all MAC and increases the number of interrupts. - */ - ieee80211_iterate_active_interfaces_atomic( - mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, - iwl_mvm_go_iterator, &data); - - cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0); - return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); -} - -static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm, - struct iwl_mac_beacon_cmd *beacon_cmd, - u8 *beacon, u32 frame_size) -{ - u32 tim_idx; - struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; - - /* The index is relative to frame start but we start looking at the - * variable-length part of the beacon. */ - tim_idx = mgmt->u.beacon.variable - beacon; - - /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ - while ((tim_idx < (frame_size - 2)) && - (beacon[tim_idx] != WLAN_EID_TIM)) - tim_idx += beacon[tim_idx+1] + 2; - - /* If TIM field was found, set variables */ - if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { - beacon_cmd->tim_idx = cpu_to_le32(tim_idx); - beacon_cmd->tim_size = cpu_to_le32((u32)beacon[tim_idx+1]); - } else { - IWL_WARN(mvm, "Unable to find TIM Element in beacon\n"); - } -} - -static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - struct sk_buff *beacon) -{ - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - struct iwl_host_cmd cmd = { - .id = BEACON_TEMPLATE_CMD, - .flags = CMD_ASYNC, - }; - struct iwl_mac_beacon_cmd beacon_cmd = {}; - struct ieee80211_tx_info *info; - u32 beacon_skb_len; - u32 rate, tx_flags; - - if (WARN_ON(!beacon)) - return -EINVAL; - - beacon_skb_len = beacon->len; - - /* TODO: for now the beacon template id is set to be the mac context id. - * Might be better to handle it as another resource ... */ - beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); - info = IEEE80211_SKB_CB(beacon); - - /* Set up TX command fields */ - beacon_cmd.tx.len = cpu_to_le16((u16)beacon_skb_len); - beacon_cmd.tx.sta_id = mvmvif->bcast_sta.sta_id; - beacon_cmd.tx.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); - tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF; - tx_flags |= - iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) << - TX_CMD_FLG_BT_PRIO_POS; - beacon_cmd.tx.tx_flags = cpu_to_le32(tx_flags); - - mvm->mgmt_last_antenna_idx = - iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm), - mvm->mgmt_last_antenna_idx); - - beacon_cmd.tx.rate_n_flags = - cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) << - RATE_MCS_ANT_POS); - - if (info->band == IEEE80211_BAND_5GHZ || vif->p2p) { - rate = IWL_FIRST_OFDM_RATE; - } else { - rate = IWL_FIRST_CCK_RATE; - beacon_cmd.tx.rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK); - } - beacon_cmd.tx.rate_n_flags |= - cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate)); - - /* Set up TX beacon command fields */ - if (vif->type == NL80211_IFTYPE_AP) - iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd, - beacon->data, - beacon_skb_len); - - /* Submit command */ - cmd.len[0] = sizeof(beacon_cmd); - cmd.data[0] = &beacon_cmd; - cmd.dataflags[0] = 0; - cmd.len[1] = beacon_skb_len; - cmd.data[1] = beacon->data; - cmd.dataflags[1] = IWL_HCMD_DFL_DUP; - - return iwl_mvm_send_cmd(mvm, &cmd); -} - -/* The beacon template for the AP/GO/IBSS has changed and needs update */ -int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm, - struct ieee80211_vif *vif) -{ - struct sk_buff *beacon; - int ret; - - WARN_ON(vif->type != NL80211_IFTYPE_AP && - vif->type != NL80211_IFTYPE_ADHOC); - - beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL); - if (!beacon) - return -ENOMEM; - - ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon); - dev_kfree_skb(beacon); - return ret; -} - -struct iwl_mvm_mac_ap_iterator_data { - struct iwl_mvm *mvm; - struct ieee80211_vif *vif; - u32 beacon_device_ts; - u16 beacon_int; -}; - -/* Find the beacon_device_ts and beacon_int for a managed interface */ -static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac, - struct ieee80211_vif *vif) -{ - struct iwl_mvm_mac_ap_iterator_data *data = _data; - - if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc) - return; - - /* Station client has higher priority over P2P client*/ - if (vif->p2p && data->beacon_device_ts) - return; - - data->beacon_device_ts = vif->bss_conf.sync_device_ts; - data->beacon_int = vif->bss_conf.beacon_int; -} - -/* - * Fill the specific data for mac context of type AP of P2P GO - */ -static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - struct iwl_mac_data_ap *ctxt_ap, - bool add) -{ - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - struct iwl_mvm_mac_ap_iterator_data data = { - .mvm = mvm, - .vif = vif, - .beacon_device_ts = 0 - }; - - ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int); - ctxt_ap->bi_reciprocal = - cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); - ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * - vif->bss_conf.dtim_period); - ctxt_ap->dtim_reciprocal = - cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int * - vif->bss_conf.dtim_period)); - - ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue); - - /* - * Only set the beacon time when the MAC is being added, when we - * just modify the MAC then we should keep the time -- the firmware - * can otherwise have a "jumping" TBTT. - */ - if (add) { - /* - * If there is a station/P2P client interface which is - * associated, set the AP's TBTT far enough from the station's - * TBTT. Otherwise, set it to the current system time - */ - ieee80211_iterate_active_interfaces_atomic( - mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, - iwl_mvm_mac_ap_iterator, &data); - - if (data.beacon_device_ts) { - u32 rand = (prandom_u32() % (64 - 36)) + 36; - mvmvif->ap_beacon_time = data.beacon_device_ts + - ieee80211_tu_to_usec(data.beacon_int * rand / - 100); - } else { - mvmvif->ap_beacon_time = - iwl_read_prph(mvm->trans, - DEVICE_SYSTEM_TIME_REG); - } - } - - ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time); - ctxt_ap->beacon_tsf = 0; /* unused */ - - /* TODO: Assume that the beacon id == mac context id */ - ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id); -} - -static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - u32 action) -{ - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - struct iwl_mac_ctx_cmd cmd = {}; - - WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p); - - /* Fill the common data for all mac context types */ - iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); - - /* - * pass probe requests and beacons from other APs (needed - * for ht protection); when there're no any associated station - * don't ask FW to pass beacons to prevent unnecessary wake-ups. - */ - cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); - if (mvmvif->ap_assoc_sta_count) { - cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); - IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n"); - } else { - IWL_DEBUG_HC(mvm, "No need to receive beacons\n"); - } - - /* Fill the data specific for ap mode */ - iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.ap, - action == FW_CTXT_ACTION_ADD); - - return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); -} - -static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - u32 action) -{ - struct iwl_mac_ctx_cmd cmd = {}; - struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr; - - WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p); - - /* Fill the common data for all mac context types */ - iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); - - /* - * pass probe requests and beacons from other APs (needed - * for ht protection) - */ - cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST | - MAC_FILTER_IN_BEACON); - - /* Fill the data specific for GO mode */ - iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.go.ap, - action == FW_CTXT_ACTION_ADD); - - cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow & - IEEE80211_P2P_OPPPS_CTWINDOW_MASK); - cmd.go.opp_ps_enabled = - cpu_to_le32(!!(noa->oppps_ctwindow & - IEEE80211_P2P_OPPPS_ENABLE_BIT)); - - return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); -} - -static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif, - u32 action, bool force_assoc_off, - const u8 *bssid_override) -{ - switch (vif->type) { - case NL80211_IFTYPE_STATION: - return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action, - force_assoc_off, - bssid_override); - break; - case NL80211_IFTYPE_AP: - if (!vif->p2p) - return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action); - else - return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action); - break; - case NL80211_IFTYPE_MONITOR: - return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action); - case NL80211_IFTYPE_P2P_DEVICE: - return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action); - case NL80211_IFTYPE_ADHOC: - return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action); - default: - break; - } - - return -EOPNOTSUPP; -} - -int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif) -{ - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - int ret; - - if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n", - vif->addr, ieee80211_vif_type_p2p(vif))) - return -EIO; - - ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD, - true, NULL); - if (ret) - return ret; - - /* will only do anything at resume from D3 time */ - iwl_mvm_set_last_nonqos_seq(mvm, vif); - - mvmvif->uploaded = true; - return 0; -} - -int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif, - bool force_assoc_off, const u8 *bssid_override) -{ - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - - if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n", - vif->addr, ieee80211_vif_type_p2p(vif))) - return -EIO; - - return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY, - force_assoc_off, bssid_override); -} - -int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif) -{ - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - struct iwl_mac_ctx_cmd cmd; - int ret; - - if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n", - vif->addr, ieee80211_vif_type_p2p(vif))) - return -EIO; - - memset(&cmd, 0, sizeof(cmd)); - - cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, - mvmvif->color)); - cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE); - - ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, - sizeof(cmd), &cmd); - if (ret) { - IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret); - return ret; - } - - mvmvif->uploaded = false; - - if (vif->type == NL80211_IFTYPE_MONITOR) - __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags); - - return 0; -} - -static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm, - struct ieee80211_vif *csa_vif, u32 gp2, - bool tx_success) -{ - struct iwl_mvm_vif *mvmvif = - iwl_mvm_vif_from_mac80211(csa_vif); - - /* Don't start to countdown from a failed beacon */ - if (!tx_success && !mvmvif->csa_countdown) - return; - - mvmvif->csa_countdown = true; - - if (!ieee80211_csa_is_complete(csa_vif)) { - int c = ieee80211_csa_update_counter(csa_vif); - - iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif); - if (csa_vif->p2p && - !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 && - tx_success) { - u32 rel_time = (c + 1) * - csa_vif->bss_conf.beacon_int - - IWL_MVM_CHANNEL_SWITCH_TIME_GO; - u32 apply_time = gp2 + rel_time * 1024; - - iwl_mvm_schedule_csa_period(mvm, csa_vif, - IWL_MVM_CHANNEL_SWITCH_TIME_GO - - IWL_MVM_CHANNEL_SWITCH_MARGIN, - apply_time); - } - } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) { - /* we don't have CSA NoA scheduled yet, switch now */ - ieee80211_csa_finish(csa_vif); - RCU_INIT_POINTER(mvm->csa_vif, NULL); - } -} - -void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm, - struct iwl_rx_cmd_buffer *rxb) -{ - struct iwl_rx_packet *pkt = rxb_addr(rxb); - struct iwl_extended_beacon_notif *beacon = (void *)pkt->data; - struct iwl_mvm_tx_resp *beacon_notify_hdr; - struct ieee80211_vif *csa_vif; - struct ieee80211_vif *tx_blocked_vif; - u16 status; - - lockdep_assert_held(&mvm->mutex); - - beacon_notify_hdr = &beacon->beacon_notify_hdr; - mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2); - - status = le16_to_cpu(beacon_notify_hdr->status.status) & TX_STATUS_MSK; - IWL_DEBUG_RX(mvm, - "beacon status %#x retries:%d tsf:0x%16llX gp2:0x%X rate:%d\n", - status, beacon_notify_hdr->failure_frame, - le64_to_cpu(beacon->tsf), - mvm->ap_last_beacon_gp2, - le32_to_cpu(beacon_notify_hdr->initial_rate)); - - csa_vif = rcu_dereference_protected(mvm->csa_vif, - lockdep_is_held(&mvm->mutex)); - if (unlikely(csa_vif && csa_vif->csa_active)) - iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2, - (status == TX_STATUS_SUCCESS)); - - tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif, - lockdep_is_held(&mvm->mutex)); - if (unlikely(tx_blocked_vif)) { - struct iwl_mvm_vif *mvmvif = - iwl_mvm_vif_from_mac80211(tx_blocked_vif); - - /* - * The channel switch is started and we have blocked the - * stations. If this is the first beacon (the timeout wasn't - * set), set the unblock timeout, otherwise countdown - */ - if (!mvm->csa_tx_block_bcn_timeout) - mvm->csa_tx_block_bcn_timeout = - IWL_MVM_CS_UNBLOCK_TX_TIMEOUT; - else - mvm->csa_tx_block_bcn_timeout--; - - /* Check if the timeout is expired, and unblock tx */ - if (mvm->csa_tx_block_bcn_timeout == 0) { - iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); - RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); - } - } -} - -static void iwl_mvm_beacon_loss_iterator(void *_data, u8 *mac, - struct ieee80211_vif *vif) -{ - struct iwl_missed_beacons_notif *missed_beacons = _data; - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - struct iwl_mvm *mvm = mvmvif->mvm; - struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig; - struct iwl_fw_dbg_trigger_tlv *trigger; - u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx; - u32 rx_missed_bcon, rx_missed_bcon_since_rx; - - if (mvmvif->id != (u16)le32_to_cpu(missed_beacons->mac_id)) - return; - - rx_missed_bcon = le32_to_cpu(missed_beacons->consec_missed_beacons); - rx_missed_bcon_since_rx = - le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx); - /* - * TODO: the threshold should be adjusted based on latency conditions, - * and/or in case of a CS flow on one of the other AP vifs. - */ - if (le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx) > - IWL_MVM_MISSED_BEACONS_THRESHOLD) - ieee80211_beacon_loss(vif); - - if (!iwl_fw_dbg_trigger_enabled(mvm->fw, - FW_DBG_TRIGGER_MISSED_BEACONS)) - return; - - trigger = iwl_fw_dbg_get_trigger(mvm->fw, - FW_DBG_TRIGGER_MISSED_BEACONS); - bcon_trig = (void *)trigger->data; - stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon); - stop_trig_missed_bcon_since_rx = - le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx); - - /* TODO: implement start trigger */ - - if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trigger)) - return; - - if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx || - rx_missed_bcon >= stop_trig_missed_bcon) - iwl_mvm_fw_dbg_collect_trig(mvm, trigger, NULL); -} - -void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm, - struct iwl_rx_cmd_buffer *rxb) -{ - struct iwl_rx_packet *pkt = rxb_addr(rxb); - struct iwl_missed_beacons_notif *mb = (void *)pkt->data; - - IWL_DEBUG_INFO(mvm, - "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n", - le32_to_cpu(mb->mac_id), - le32_to_cpu(mb->consec_missed_beacons), - le32_to_cpu(mb->consec_missed_beacons_since_last_rx), - le32_to_cpu(mb->num_recvd_beacons), - le32_to_cpu(mb->num_expected_beacons)); - - ieee80211_iterate_active_interfaces_atomic(mvm->hw, - IEEE80211_IFACE_ITER_NORMAL, - iwl_mvm_beacon_loss_iterator, - mb); -} |