| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Johannes Berg | 9192 | 53.52% | 41 | 22.04% |
| Sara Sharon | 2777 | 16.17% | 33 | 17.74% |
| Liad Kaufman | 2398 | 13.96% | 29 | 15.59% |
| Emmanuel Grumbach | 806 | 4.69% | 28 | 15.05% |
| Andrei Otcheretianski | 314 | 1.83% | 3 | 1.61% |
| striebit | 288 | 1.68% | 1 | 0.54% |
| Ayala Beker | 234 | 1.36% | 3 | 1.61% |
| Avraham Stern | 175 | 1.02% | 5 | 2.69% |
| David Spinadel | 151 | 0.88% | 1 | 0.54% |
| Luciano Coelho | 137 | 0.80% | 11 | 5.91% |
| Chaya Rachel Ivgy | 126 | 0.73% | 1 | 0.54% |
| Mordechai Goodstein | 84 | 0.49% | 1 | 0.54% |
| Arik Nemtsov | 84 | 0.49% | 3 | 1.61% |
| Eliad Peller | 74 | 0.43% | 2 | 1.08% |
| Beni Lev | 66 | 0.38% | 2 | 1.08% |
| Eyal Shapira | 51 | 0.30% | 1 | 0.54% |
| Kees Cook | 38 | 0.22% | 1 | 0.54% |
| Gregory Greenman | 35 | 0.20% | 3 | 1.61% |
| Eytan Lifshitz | 30 | 0.17% | 2 | 1.08% |
| Max Stepanov | 28 | 0.16% | 2 | 1.08% |
| Matti Gottlieb | 17 | 0.10% | 1 | 0.54% |
| Sharon Dvir | 16 | 0.09% | 2 | 1.08% |
| Avri Altman | 15 | 0.09% | 1 | 0.54% |
| Naftali Goldstein | 15 | 0.09% | 3 | 1.61% |
| Ilan Peer | 13 | 0.08% | 2 | 1.08% |
| Ariej Marjieh | 7 | 0.04% | 1 | 0.54% |
| Monam Agarwal | 3 | 0.02% | 1 | 0.54% |
| Wei Yongjun | 1 | 0.01% | 1 | 0.54% |
| John W. Linville | 1 | 0.01% | 1 | 0.54% |
| Total | 17176 | 186 |
/****************************************************************************** * * 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 - 2015 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH * Copyright(c) 2016 - 2017 Intel Deutschland GmbH * Copyright(c) 2018 Intel Corporation * * 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. * * The full GNU General Public License is included in this distribution * in the file called COPYING. * * Contact Information: * Intel Linux Wireless <linuxwifi@intel.com> * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * * BSD LICENSE * * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH * Copyright(c) 2016 - 2017 Intel Deutschland GmbH * Copyright(c) 2018 Intel Corporation * 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 <net/mac80211.h> #include "mvm.h" #include "sta.h" #include "rs.h" static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm); static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, u32 sta_id, struct ieee80211_key_conf *key, bool mcast, u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, u8 key_offset, bool mfp); /* * New version of ADD_STA_sta command added new fields at the end of the * structure, so sending the size of the relevant API's structure is enough to * support both API versions. */ static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) { if (iwl_mvm_has_new_rx_api(mvm) || fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) return sizeof(struct iwl_mvm_add_sta_cmd); else return sizeof(struct iwl_mvm_add_sta_cmd_v7); } static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, enum nl80211_iftype iftype) { int sta_id; u32 reserved_ids = 0; BUILD_BUG_ON(IWL_MVM_STATION_COUNT > 32); WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); lockdep_assert_held(&mvm->mutex); /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ if (iftype != NL80211_IFTYPE_STATION) reserved_ids = BIT(0); /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ for (sta_id = 0; sta_id < ARRAY_SIZE(mvm->fw_id_to_mac_id); sta_id++) { if (BIT(sta_id) & reserved_ids) continue; if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], lockdep_is_held(&mvm->mutex))) return sta_id; } return IWL_MVM_INVALID_STA; } /* send station add/update command to firmware */ int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, bool update, unsigned int flags) { struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); struct iwl_mvm_add_sta_cmd add_sta_cmd = { .sta_id = mvm_sta->sta_id, .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), .add_modify = update ? 1 : 0, .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | STA_FLG_MIMO_EN_MSK | STA_FLG_RTS_MIMO_PROT), .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), }; int ret; u32 status; u32 agg_size = 0, mpdu_dens = 0; if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) add_sta_cmd.station_type = mvm_sta->sta_type; if (!update || (flags & STA_MODIFY_QUEUES)) { memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); if (!iwl_mvm_has_new_tx_api(mvm)) { add_sta_cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); if (flags & STA_MODIFY_QUEUES) add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; } else { WARN_ON(flags & STA_MODIFY_QUEUES); } } switch (sta->bandwidth) { case IEEE80211_STA_RX_BW_160: add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); /* fall through */ case IEEE80211_STA_RX_BW_80: add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); /* fall through */ case IEEE80211_STA_RX_BW_40: add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); /* fall through */ case IEEE80211_STA_RX_BW_20: if (sta->ht_cap.ht_supported) add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_20MHZ); break; } switch (sta->rx_nss) { case 1: add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); break; case 2: add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); break; case 3 ... 8: add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); break; } switch (sta->smps_mode) { case IEEE80211_SMPS_AUTOMATIC: case IEEE80211_SMPS_NUM_MODES: WARN_ON(1); break; case IEEE80211_SMPS_STATIC: /* override NSS */ add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); break; case IEEE80211_SMPS_DYNAMIC: add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); break; case IEEE80211_SMPS_OFF: /* nothing */ break; } if (sta->ht_cap.ht_supported) { add_sta_cmd.station_flags_msk |= cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | STA_FLG_AGG_MPDU_DENS_MSK); mpdu_dens = sta->ht_cap.ampdu_density; } if (sta->vht_cap.vht_supported) { agg_size = sta->vht_cap.cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; agg_size >>= IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; } else if (sta->ht_cap.ht_supported) { agg_size = sta->ht_cap.ampdu_factor; } add_sta_cmd.station_flags |= cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); add_sta_cmd.station_flags |= cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); if (sta->wme) { add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) add_sta_cmd.uapsd_acs |= BIT(AC_BK); if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) add_sta_cmd.uapsd_acs |= BIT(AC_BE); if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) add_sta_cmd.uapsd_acs |= BIT(AC_VI); if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) add_sta_cmd.uapsd_acs |= BIT(AC_VO); add_sta_cmd.uapsd_acs |= add_sta_cmd.uapsd_acs << 4; add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; } status = ADD_STA_SUCCESS; ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, iwl_mvm_add_sta_cmd_size(mvm), &add_sta_cmd, &status); if (ret) return ret; switch (status & IWL_ADD_STA_STATUS_MASK) { case ADD_STA_SUCCESS: IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); break; default: ret = -EIO; IWL_ERR(mvm, "ADD_STA failed\n"); break; } return ret; } static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) { struct iwl_mvm_baid_data *data = from_timer(data, t, session_timer); struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; struct iwl_mvm_baid_data *ba_data; struct ieee80211_sta *sta; struct iwl_mvm_sta *mvm_sta; unsigned long timeout; rcu_read_lock(); ba_data = rcu_dereference(*rcu_ptr); if (WARN_ON(!ba_data)) goto unlock; if (!ba_data->timeout) goto unlock; timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); if (time_is_after_jiffies(timeout)) { mod_timer(&ba_data->session_timer, timeout); goto unlock; } /* Timer expired */ sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); /* * sta should be valid unless the following happens: * The firmware asserts which triggers a reconfig flow, but * the reconfig fails before we set the pointer to sta into * the fw_id_to_mac_id pointer table. Mac80211 can't stop * A-MDPU and hence the timer continues to run. Then, the * timer expires and sta is NULL. */ if (!sta) goto unlock; mvm_sta = iwl_mvm_sta_from_mac80211(sta); ieee80211_rx_ba_timer_expired(mvm_sta->vif, sta->addr, ba_data->tid); unlock: rcu_read_unlock(); } /* Disable aggregations for a bitmap of TIDs for a given station */ static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, unsigned long disable_agg_tids, bool remove_queue) { struct iwl_mvm_add_sta_cmd cmd = {}; struct ieee80211_sta *sta; struct iwl_mvm_sta *mvmsta; u32 status; u8 sta_id; int ret; if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) return -EINVAL; sta_id = mvm->queue_info[queue].ra_sta_id; rcu_read_lock(); sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { rcu_read_unlock(); return -EINVAL; } mvmsta = iwl_mvm_sta_from_mac80211(sta); mvmsta->tid_disable_agg |= disable_agg_tids; cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); cmd.sta_id = mvmsta->sta_id; cmd.add_modify = STA_MODE_MODIFY; cmd.modify_mask = STA_MODIFY_QUEUES; if (disable_agg_tids) cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; if (remove_queue) cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); rcu_read_unlock(); /* Notify FW of queue removal from the STA queues */ status = ADD_STA_SUCCESS; ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, iwl_mvm_add_sta_cmd_size(mvm), &cmd, &status); return ret; } static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue, u8 tid, u8 flags) { struct iwl_scd_txq_cfg_cmd cmd = { .scd_queue = queue, .action = SCD_CFG_DISABLE_QUEUE, }; bool remove_mac_queue = mac80211_queue != IEEE80211_INVAL_HW_QUEUE; int ret; if (WARN_ON(remove_mac_queue && mac80211_queue >= IEEE80211_MAX_QUEUES)) return -EINVAL; if (iwl_mvm_has_new_tx_api(mvm)) { if (remove_mac_queue) mvm->hw_queue_to_mac80211[queue] &= ~BIT(mac80211_queue); iwl_trans_txq_free(mvm->trans, queue); return 0; } if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0)) return 0; mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); /* * If there is another TID with the same AC - don't remove the MAC queue * from the mapping */ if (tid < IWL_MAX_TID_COUNT) { unsigned long tid_bitmap = mvm->queue_info[queue].tid_bitmap; int ac = tid_to_mac80211_ac[tid]; int i; for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT) { if (tid_to_mac80211_ac[i] == ac) remove_mac_queue = false; } } if (remove_mac_queue) mvm->hw_queue_to_mac80211[queue] &= ~BIT(mac80211_queue); cmd.action = mvm->queue_info[queue].tid_bitmap ? SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; if (cmd.action == SCD_CFG_DISABLE_QUEUE) mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; IWL_DEBUG_TX_QUEUES(mvm, "Disabling TXQ #%d tids=0x%x (mac80211 map:0x%x)\n", queue, mvm->queue_info[queue].tid_bitmap, mvm->hw_queue_to_mac80211[queue]); /* If the queue is still enabled - nothing left to do in this func */ if (cmd.action == SCD_CFG_ENABLE_QUEUE) return 0; cmd.sta_id = mvm->queue_info[queue].ra_sta_id; cmd.tid = mvm->queue_info[queue].txq_tid; /* Make sure queue info is correct even though we overwrite it */ WARN(mvm->queue_info[queue].tid_bitmap || mvm->hw_queue_to_mac80211[queue], "TXQ #%d info out-of-sync - mac map=0x%x, tids=0x%x\n", queue, mvm->hw_queue_to_mac80211[queue], mvm->queue_info[queue].tid_bitmap); /* If we are here - the queue is freed and we can zero out these vals */ mvm->queue_info[queue].tid_bitmap = 0; mvm->hw_queue_to_mac80211[queue] = 0; /* Regardless if this is a reserved TXQ for a STA - mark it as false */ mvm->queue_info[queue].reserved = false; iwl_trans_txq_disable(mvm->trans, queue, false); ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, flags, sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); if (ret) IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", queue, ret); return ret; } static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) { struct ieee80211_sta *sta; struct iwl_mvm_sta *mvmsta; unsigned long tid_bitmap; unsigned long agg_tids = 0; u8 sta_id; int tid; lockdep_assert_held(&mvm->mutex); if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) return -EINVAL; sta_id = mvm->queue_info[queue].ra_sta_id; tid_bitmap = mvm->queue_info[queue].tid_bitmap; sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], lockdep_is_held(&mvm->mutex)); if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) return -EINVAL; mvmsta = iwl_mvm_sta_from_mac80211(sta); spin_lock_bh(&mvmsta->lock); for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { if (mvmsta->tid_data[tid].state == IWL_AGG_ON) agg_tids |= BIT(tid); } spin_unlock_bh(&mvmsta->lock); return agg_tids; } /* * Remove a queue from a station's resources. * Note that this only marks as free. It DOESN'T delete a BA agreement, and * doesn't disable the queue */ static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) { struct ieee80211_sta *sta; struct iwl_mvm_sta *mvmsta; unsigned long tid_bitmap; unsigned long disable_agg_tids = 0; u8 sta_id; int tid; lockdep_assert_held(&mvm->mutex); if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) return -EINVAL; sta_id = mvm->queue_info[queue].ra_sta_id; tid_bitmap = mvm->queue_info[queue].tid_bitmap; rcu_read_lock(); sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { rcu_read_unlock(); return 0; } mvmsta = iwl_mvm_sta_from_mac80211(sta); spin_lock_bh(&mvmsta->lock); /* Unmap MAC queues and TIDs from this queue */ for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { if (mvmsta->tid_data[tid].state == IWL_AGG_ON) disable_agg_tids |= BIT(tid); mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; } mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ spin_unlock_bh(&mvmsta->lock); rcu_read_unlock(); /* * The TX path may have been using this TXQ_ID from the tid_data, * so make sure it's no longer running so that we can safely reuse * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE * above, but nothing guarantees we've stopped using them. Thus, * without this, we could get to iwl_mvm_disable_txq() and remove * the queue while still sending frames to it. */ synchronize_net(); return disable_agg_tids; } static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, u8 new_sta_id) { struct iwl_mvm_sta *mvmsta; u8 txq_curr_ac, sta_id, tid; unsigned long disable_agg_tids = 0; bool same_sta; int ret; lockdep_assert_held(&mvm->mutex); if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) return -EINVAL; txq_curr_ac = mvm->queue_info[queue].mac80211_ac; sta_id = mvm->queue_info[queue].ra_sta_id; tid = mvm->queue_info[queue].txq_tid; same_sta = sta_id == new_sta_id; mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); if (WARN_ON(!mvmsta)) return -EINVAL; disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); /* Disable the queue */ if (disable_agg_tids) iwl_mvm_invalidate_sta_queue(mvm, queue, disable_agg_tids, false); ret = iwl_mvm_disable_txq(mvm, queue, mvmsta->vif->hw_queue[txq_curr_ac], tid, 0); if (ret) { IWL_ERR(mvm, "Failed to free inactive queue %d (ret=%d)\n", queue, ret); return ret; } /* If TXQ is allocated to another STA, update removal in FW */ if (!same_sta) iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); return 0; } static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, unsigned long tfd_queue_mask, u8 ac) { int queue = 0; u8 ac_to_queue[IEEE80211_NUM_ACS]; int i; /* * This protects us against grabbing a queue that's being reconfigured * by the inactivity checker. */ lockdep_assert_held(&mvm->mutex); if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) return -EINVAL; memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); /* See what ACs the existing queues for this STA have */ for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { /* Only DATA queues can be shared */ if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) continue; ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; } /* * The queue to share is chosen only from DATA queues as follows (in * descending priority): * 1. An AC_BE queue * 2. Same AC queue * 3. Highest AC queue that is lower than new AC * 4. Any existing AC (there always is at least 1 DATA queue) */ /* Priority 1: An AC_BE queue */ if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) queue = ac_to_queue[IEEE80211_AC_BE]; /* Priority 2: Same AC queue */ else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) queue = ac_to_queue[ac]; /* Priority 3a: If new AC is VO and VI exists - use VI */ else if (ac == IEEE80211_AC_VO && ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) queue = ac_to_queue[IEEE80211_AC_VI]; /* Priority 3b: No BE so only AC less than the new one is BK */ else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) queue = ac_to_queue[IEEE80211_AC_BK]; /* Priority 4a: No BE nor BK - use VI if exists */ else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) queue = ac_to_queue[IEEE80211_AC_VI]; /* Priority 4b: No BE, BK nor VI - use VO if exists */ else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) queue = ac_to_queue[IEEE80211_AC_VO]; /* Make sure queue found (or not) is legal */ if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { IWL_ERR(mvm, "No DATA queues available to share\n"); return -ENOSPC; } return queue; } /* * If a given queue has a higher AC than the TID stream that is being compared * to, the queue needs to be redirected to the lower AC. This function does that * in such a case, otherwise - if no redirection required - it does nothing, * unless the %force param is true. */ static int iwl_mvm_scd_queue_redirect(struct iwl_mvm *mvm, int queue, int tid, int ac, int ssn, unsigned int wdg_timeout, bool force) { struct iwl_scd_txq_cfg_cmd cmd = { .scd_queue = queue, .action = SCD_CFG_DISABLE_QUEUE, }; bool shared_queue; unsigned long mq; int ret; if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) return -EINVAL; /* * If the AC is lower than current one - FIFO needs to be redirected to * the lowest one of the streams in the queue. Check if this is needed * here. * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with * value 3 and VO with value 0, so to check if ac X is lower than ac Y * we need to check if the numerical value of X is LARGER than of Y. */ if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { IWL_DEBUG_TX_QUEUES(mvm, "No redirection needed on TXQ #%d\n", queue); return 0; } cmd.sta_id = mvm->queue_info[queue].ra_sta_id; cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; cmd.tid = mvm->queue_info[queue].txq_tid; mq = mvm->hw_queue_to_mac80211[queue]; shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1; IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", queue, iwl_mvm_ac_to_tx_fifo[ac]); /* Stop MAC queues and wait for this queue to empty */ iwl_mvm_stop_mac_queues(mvm, mq); ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); if (ret) { IWL_ERR(mvm, "Error draining queue %d before reconfig\n", queue); ret = -EIO; goto out; } /* Before redirecting the queue we need to de-activate it */ iwl_trans_txq_disable(mvm->trans, queue, false); ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); if (ret) IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, ret); /* Make sure the SCD wrptr is correctly set before reconfiguring */ iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); /* Update the TID "owner" of the queue */ mvm->queue_info[queue].txq_tid = tid; /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ /* Redirect to lower AC */ iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); /* Update AC marking of the queue */ mvm->queue_info[queue].mac80211_ac = ac; /* * Mark queue as shared in transport if shared * Note this has to be done after queue enablement because enablement * can also set this value, and there is no indication there to shared * queues */ if (shared_queue) iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); out: /* Continue using the MAC queues */ iwl_mvm_start_mac_queues(mvm, mq); return ret; } static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, u8 minq, u8 maxq) { int i; lockdep_assert_held(&mvm->mutex); /* This should not be hit with new TX path */ if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) return -ENOSPC; /* Start by looking for a free queue */ for (i = minq; i <= maxq; i++) if (mvm->queue_info[i].tid_bitmap == 0 && mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) return i; return -ENOSPC; } static int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, int mac80211_queue, u8 sta_id, u8 tid, unsigned int timeout) { int queue, size = IWL_DEFAULT_QUEUE_SIZE; if (tid == IWL_MAX_TID_COUNT) { tid = IWL_MGMT_TID; size = IWL_MGMT_QUEUE_SIZE; } queue = iwl_trans_txq_alloc(mvm->trans, cpu_to_le16(TX_QUEUE_CFG_ENABLE_QUEUE), sta_id, tid, SCD_QUEUE_CFG, size, timeout); if (queue < 0) { IWL_DEBUG_TX_QUEUES(mvm, "Failed allocating TXQ for sta %d tid %d, ret: %d\n", sta_id, tid, queue); return queue; } IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta %d tid %d\n", queue, sta_id, tid); mvm->hw_queue_to_mac80211[queue] |= BIT(mac80211_queue); IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d (mac80211 map:0x%x)\n", queue, mvm->hw_queue_to_mac80211[queue]); return queue; } static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, struct ieee80211_sta *sta, u8 ac, int tid) { struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); unsigned int wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); u8 mac_queue = mvmsta->vif->hw_queue[ac]; int queue = -1; lockdep_assert_held(&mvm->mutex); IWL_DEBUG_TX_QUEUES(mvm, "Allocating queue for sta %d on tid %d\n", mvmsta->sta_id, tid); queue = iwl_mvm_tvqm_enable_txq(mvm, mac_queue, mvmsta->sta_id, tid, wdg_timeout); if (queue < 0) return queue; IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); spin_lock_bh(&mvmsta->lock); mvmsta->tid_data[tid].txq_id = queue; spin_unlock_bh(&mvmsta->lock); return 0; } static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, int queue, int mac80211_queue, u8 sta_id, u8 tid) { bool enable_queue = true; /* Make sure this TID isn't already enabled */ if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", queue, tid); return false; } /* Update mappings and refcounts */ if (mvm->queue_info[queue].tid_bitmap) enable_queue = false; if (mac80211_queue != IEEE80211_INVAL_HW_QUEUE) { WARN(mac80211_queue >= BITS_PER_BYTE * sizeof(mvm->hw_queue_to_mac80211[0]), "cannot track mac80211 queue %d (queue %d, sta %d, tid %d)\n", mac80211_queue, queue, sta_id, tid); mvm->hw_queue_to_mac80211[queue] |= BIT(mac80211_queue); } mvm->queue_info[queue].tid_bitmap |= BIT(tid); mvm->queue_info[queue].ra_sta_id = sta_id; if (enable_queue) { if (tid != IWL_MAX_TID_COUNT) mvm->queue_info[queue].mac80211_ac = tid_to_mac80211_ac[tid]; else mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; mvm->queue_info[queue].txq_tid = tid; } IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d tids=0x%x (mac80211 map:0x%x)\n", queue, mvm->queue_info[queue].tid_bitmap, mvm->hw_queue_to_mac80211[queue]); return enable_queue; } static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue, u16 ssn, const struct iwl_trans_txq_scd_cfg *cfg, unsigned int wdg_timeout) { struct iwl_scd_txq_cfg_cmd cmd = { .scd_queue = queue, .action = SCD_CFG_ENABLE_QUEUE, .window = cfg->frame_limit, .sta_id = cfg->sta_id, .ssn = cpu_to_le16(ssn), .tx_fifo = cfg->fifo, .aggregate = cfg->aggregate, .tid = cfg->tid, }; bool inc_ssn; if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) return false; /* Send the enabling command if we need to */ if (!iwl_mvm_update_txq_mapping(mvm, queue, mac80211_queue, cfg->sta_id, cfg->tid)) return false; inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); if (inc_ssn) le16_add_cpu(&cmd.ssn, 1); WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); return inc_ssn; } static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue) { struct iwl_scd_txq_cfg_cmd cmd = { .scd_queue = queue, .action = SCD_CFG_UPDATE_QUEUE_TID, }; int tid; unsigned long tid_bitmap; int ret; lockdep_assert_held(&mvm->mutex); if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) return; tid_bitmap = mvm->queue_info[queue].tid_bitmap; if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) return; /* Find any TID for queue */ tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); cmd.tid = tid; cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); if (ret) { IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", queue, ret); return; } mvm->queue_info[queue].txq_tid = tid; IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", queue, tid); } static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) { struct ieee80211_sta *sta; struct iwl_mvm_sta *mvmsta; u8 sta_id; int tid = -1; unsigned long tid_bitmap; unsigned int wdg_timeout; int ssn; int ret = true; /* queue sharing is disabled on new TX path */ if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) return; lockdep_assert_held(&mvm->mutex); sta_id = mvm->queue_info[queue].ra_sta_id; tid_bitmap = mvm->queue_info[queue].tid_bitmap; /* Find TID for queue, and make sure it is the only one on the queue */ tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); if (tid_bitmap != BIT(tid)) { IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", queue, tid_bitmap); return; } IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, tid); sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], lockdep_is_held(&mvm->mutex)); if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) return; mvmsta = iwl_mvm_sta_from_mac80211(sta); wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, tid_to_mac80211_ac[tid], ssn, wdg_timeout, true); if (ret) { IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); return; } /* If aggs should be turned back on - do it */ if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { struct iwl_mvm_add_sta_cmd cmd = {0}; mvmsta->tid_disable_agg &= ~BIT(tid); cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); cmd.sta_id = mvmsta->sta_id; cmd.add_modify = STA_MODE_MODIFY; cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, iwl_mvm_add_sta_cmd_size(mvm), &cmd); if (!ret) { IWL_DEBUG_TX_QUEUES(mvm, "TXQ #%d is now aggregated again\n", queue); /* Mark queue intenally as aggregating again */ iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); } } mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; } /* * Remove inactive TIDs of a given queue. * If all queue TIDs are inactive - mark the queue as inactive * If only some the queue TIDs are inactive - unmap them from the queue * * Returns %true if all TIDs were removed and the queue could be reused. */ static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, int queue, unsigned long tid_bitmap, unsigned long *unshare_queues, unsigned long *changetid_queues) { int tid; lockdep_assert_held(&mvmsta->lock); lockdep_assert_held(&mvm->mutex); if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) return false; /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { /* If some TFDs are still queued - don't mark TID as inactive */ if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) tid_bitmap &= ~BIT(tid); /* Don't mark as inactive any TID that has an active BA */ if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) tid_bitmap &= ~BIT(tid); } /* If all TIDs in the queue are inactive - return it can be reused */ if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue); return true; } /* * If we are here, this is a shared queue and not all TIDs timed-out. * Remove the ones that did. */ for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { int mac_queue = mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]]; u16 tid_bitmap; mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; mvm->hw_queue_to_mac80211[queue] &= ~BIT(mac_queue); mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); tid_bitmap = mvm->queue_info[queue].tid_bitmap; /* * We need to take into account a situation in which a TXQ was * allocated to TID x, and then turned shared by adding TIDs y * and z. If TID x becomes inactive and is removed from the TXQ, * ownership must be given to one of the remaining TIDs. * This is mainly because if TID x continues - a new queue can't * be allocated for it as long as it is an owner of another TXQ. * * Mark this queue in the right bitmap, we'll send the command * to the firmware later. */ if (!(tid_bitmap & BIT(mvm->queue_info[queue].txq_tid))) set_bit(queue, changetid_queues); IWL_DEBUG_TX_QUEUES(mvm, "Removing inactive TID %d from shared Q:%d\n", tid, queue); } IWL_DEBUG_TX_QUEUES(mvm, "TXQ #%d left with tid bitmap 0x%x\n", queue, mvm->queue_info[queue].tid_bitmap); /* * There may be different TIDs with the same mac queues, so make * sure all TIDs have existing corresponding mac queues enabled */ tid_bitmap = mvm->queue_info[queue].tid_bitmap; for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { mvm->hw_queue_to_mac80211[queue] |= BIT(mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]]); } /* If the queue is marked as shared - "unshare" it */ if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 && mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", queue); set_bit(queue, unshare_queues); } return false; } /* * Check for inactivity - this includes checking if any queue * can be unshared and finding one (and only one) that can be * reused. * This function is also invoked as a sort of clean-up task, * in which case @alloc_for_sta is IWL_MVM_INVALID_STA. * * Returns the queue number, or -ENOSPC. */ static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta) { unsigned long now = jiffies; unsigned long unshare_queues = 0; unsigned long changetid_queues = 0; int i, ret, free_queue = -ENOSPC; lockdep_assert_held(&mvm->mutex); if (iwl_mvm_has_new_tx_api(mvm)) return -ENOSPC; rcu_read_lock(); /* we skip the CMD queue below by starting at 1 */ BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0); for (i = 1; i < IWL_MAX_HW_QUEUES; i++) { struct ieee80211_sta *sta; struct iwl_mvm_sta *mvmsta; u8 sta_id; int tid; unsigned long inactive_tid_bitmap = 0; unsigned long queue_tid_bitmap; queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; if (!queue_tid_bitmap) continue; /* If TXQ isn't in active use anyway - nothing to do here... */ if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) continue; /* Check to see if there are inactive TIDs on this queue */ for_each_set_bit(tid, &queue_tid_bitmap, IWL_MAX_TID_COUNT + 1) { if (time_after(mvm->queue_info[i].last_frame_time[tid] + IWL_MVM_DQA_QUEUE_TIMEOUT, now)) continue; inactive_tid_bitmap |= BIT(tid); } /* If all TIDs are active - finish check on this queue */ if (!inactive_tid_bitmap) continue; /* * If we are here - the queue hadn't been served recently and is * in use */ sta_id = mvm->queue_info[i].ra_sta_id; sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); /* * If the STA doesn't exist anymore, it isn't an error. It could * be that it was removed since getting the queues, and in this * case it should've inactivated its queues anyway. */ if (IS_ERR_OR_NULL(sta)) continue; mvmsta = iwl_mvm_sta_from_mac80211(sta); spin_lock_bh(&mvmsta->lock); ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, inactive_tid_bitmap, &unshare_queues, &changetid_queues); if (ret >= 0 && free_queue < 0) free_queue = ret; /* only unlock sta lock - we still need the queue info lock */ spin_unlock_bh(&mvmsta->lock); } rcu_read_unlock(); /* Reconfigure queues requiring reconfiguation */ for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES) iwl_mvm_unshare_queue(mvm, i); for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES) iwl_mvm_change_queue_tid(mvm, i); if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) { ret = iwl_mvm_free_inactive_queue(mvm, free_queue, alloc_for_sta); if (ret) return ret; } return free_queue; } static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, struct ieee80211_sta *sta, u8 ac, int tid, struct ieee80211_hdr *hdr) { struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); struct iwl_trans_txq_scd_cfg cfg = { .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), .sta_id = mvmsta->sta_id, .tid = tid, .frame_limit = IWL_FRAME_LIMIT, }; unsigned int wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); u8 mac_queue = mvmsta->vif->hw_queue[ac]; int queue = -1; unsigned long disable_agg_tids = 0; enum iwl_mvm_agg_state queue_state; bool shared_queue = false, inc_ssn; int ssn; unsigned long tfd_queue_mask; int ret; lockdep_assert_held(&mvm->mutex); if (iwl_mvm_has_new_tx_api(mvm)) return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); spin_lock_bh(&mvmsta->lock); tfd_queue_mask = mvmsta->tfd_queue_msk; ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); spin_unlock_bh(&mvmsta->lock); /* * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one * exists */ if (!ieee80211_is_data_qos(hdr->frame_control) || ieee80211_is_qos_nullfunc(hdr->frame_control)) { queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, IWL_MVM_DQA_MIN_MGMT_QUEUE, IWL_MVM_DQA_MAX_MGMT_QUEUE); if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", queue); /* If no such queue is found, we'll use a DATA queue instead */ } if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && (mvm->queue_info[mvmsta->reserved_queue].status == IWL_MVM_QUEUE_RESERVED)) { queue = mvmsta->reserved_queue; mvm->queue_info[queue].reserved = true; IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); } if (queue < 0) queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, IWL_MVM_DQA_MIN_DATA_QUEUE, IWL_MVM_DQA_MAX_DATA_QUEUE); if (queue < 0) { /* try harder - perhaps kill an inactive queue */ queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); } /* No free queue - we'll have to share */ if (queue <= 0) { queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); if (queue > 0) { shared_queue = true; mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; } } /* * Mark TXQ as ready, even though it hasn't been fully configured yet, * to make sure no one else takes it. * This will allow avoiding re-acquiring the lock at the end of the * configuration. On error we'll mark it back as free. */ if (queue > 0 && !shared_queue) mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; /* This shouldn't happen - out of queues */ if (WARN_ON(queue <= 0)) { IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", tid, cfg.sta_id); return queue; } /* * Actual en/disablement of aggregations is through the ADD_STA HCMD, * but for configuring the SCD to send A-MPDUs we need to mark the queue * as aggregatable. * Mark all DATA queues as allowing to be aggregated at some point */ cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); IWL_DEBUG_TX_QUEUES(mvm, "Allocating %squeue #%d to sta %d on tid %d\n", shared_queue ? "shared " : "", queue, mvmsta->sta_id, tid); if (shared_queue) { /* Disable any open aggs on this queue */ disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); if (disable_agg_tids) { IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", queue); iwl_mvm_invalidate_sta_queue(mvm, queue, disable_agg_tids, false); } } inc_ssn = iwl_mvm_enable_txq(mvm, queue, mac_queue, ssn, &cfg, wdg_timeout); /* * Mark queue as shared in transport if shared * Note this has to be done after queue enablement because enablement * can also set this value, and there is no indication there to shared * queues */ if (shared_queue) iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); spin_lock_bh(&mvmsta->lock); /* * This looks racy, but it is not. We have only one packet for * this ra/tid in our Tx path since we stop the Qdisc when we * need to allocate a new TFD queue. */ if (inc_ssn) { mvmsta->tid_data[tid].seq_number += 0x10; ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; } mvmsta->tid_data[tid].txq_id = queue; mvmsta->tfd_queue_msk |= BIT(queue); queue_state = mvmsta->tid_data[tid].state; if (mvmsta->reserved_queue == queue) mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; spin_unlock_bh(&mvmsta->lock); if (!shared_queue) { ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); if (ret) goto out_err; /* If we need to re-enable aggregations... */ if (queue_state == IWL_AGG_ON) { ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); if (ret) goto out_err; } } else { /* Redirect queue, if needed */ ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, ac, ssn, wdg_timeout, false); if (ret) goto out_err; } return 0; out_err: iwl_mvm_disable_txq(mvm, queue, mac_queue, tid, 0); return ret; } static inline u8 iwl_mvm_tid_to_ac_queue(int tid) { if (tid == IWL_MAX_TID_COUNT) return IEEE80211_AC_VO; /* MGMT */ return tid_to_mac80211_ac[tid]; } static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm, struct ieee80211_sta *sta, int tid) { struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; struct sk_buff *skb; struct ieee80211_hdr *hdr; struct sk_buff_head deferred_tx; u8 mac_queue; bool no_queue = false; /* Marks if there is a problem with the queue */ u8 ac; lockdep_assert_held(&mvm->mutex); skb = skb_peek(&tid_data->deferred_tx_frames); if (!skb) return; hdr = (void *)skb->data; ac = iwl_mvm_tid_to_ac_queue(tid); mac_queue = IEEE80211_SKB_CB(skb)->hw_queue; if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE && iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) { IWL_ERR(mvm, "Can't alloc TXQ for sta %d tid %d - dropping frame\n", mvmsta->sta_id, tid); /* * Mark queue as problematic so later the deferred traffic is * freed, as we can do nothing with it */ no_queue = true; } __skb_queue_head_init(&deferred_tx); /* Disable bottom-halves when entering TX path */ local_bh_disable(); spin_lock(&mvmsta->lock); skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx); mvmsta->deferred_traffic_tid_map &= ~BIT(tid); spin_unlock(&mvmsta->lock); while ((skb = __skb_dequeue(&deferred_tx))) if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta)) ieee80211_free_txskb(mvm->hw, skb); local_bh_enable(); /* Wake queue */ iwl_mvm_start_mac_queues(mvm, BIT(mac_queue)); } void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) { struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, add_stream_wk); struct ieee80211_sta *sta; struct iwl_mvm_sta *mvmsta; unsigned long deferred_tid_traffic; int sta_id, tid; mutex_lock(&mvm->mutex); iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); /* Go over all stations with deferred traffic */ for_each_set_bit(sta_id, mvm->sta_deferred_frames, IWL_MVM_STATION_COUNT) { clear_bit(sta_id, mvm->sta_deferred_frames); sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], lockdep_is_held(&mvm->mutex)); if (IS_ERR_OR_NULL(sta)) continue; mvmsta = iwl_mvm_sta_from_mac80211(sta); deferred_tid_traffic = mvmsta->deferred_traffic_tid_map; for_each_set_bit(tid, &deferred_tid_traffic, IWL_MAX_TID_COUNT + 1) iwl_mvm_tx_deferred_stream(mvm, sta, tid); } mutex_unlock(&mvm->mutex); } static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, struct ieee80211_sta *sta, enum nl80211_iftype vif_type) { struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); int queue; /* queue reserving is disabled on new TX path */ if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) return 0; /* run the general cleanup/unsharing of queues */ iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); /* Make sure we have free resources for this STA */ if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == IWL_MVM_QUEUE_FREE)) queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; else queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, IWL_MVM_DQA_MIN_DATA_QUEUE, IWL_MVM_DQA_MAX_DATA_QUEUE); if (queue < 0) { /* try again - this time kick out a queue if needed */ queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); if (queue < 0) { IWL_ERR(mvm, "No available queues for new station\n"); return -ENOSPC; } } mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; mvmsta->reserved_queue = queue; IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", queue, mvmsta->sta_id); return 0; } /* * In DQA mode, after a HW restart the queues should be allocated as before, in * order to avoid race conditions when there are shared queues. This function * does the re-mapping and queue allocation. * * Note that re-enabling aggregations isn't done in this function. */ static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvm_sta) { unsigned int wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); int i; struct iwl_trans_txq_scd_cfg cfg = { .sta_id = mvm_sta->sta_id, .frame_limit = IWL_FRAME_LIMIT, }; /* Make sure reserved queue is still marked as such (if allocated) */ if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) mvm->queue_info[mvm_sta->reserved_queue].status = IWL_MVM_QUEUE_RESERVED; for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; int txq_id = tid_data->txq_id; int ac; u8 mac_queue; if (txq_id == IWL_MVM_INVALID_QUEUE) continue; skb_queue_head_init(&tid_data->deferred_tx_frames); ac = tid_to_mac80211_ac[i]; mac_queue = mvm_sta->vif->hw_queue[ac]; if (iwl_mvm_has_new_tx_api(mvm)) { IWL_DEBUG_TX_QUEUES(mvm, "Re-mapping sta %d tid %d\n", mvm_sta->sta_id, i); txq_id = iwl_mvm_tvqm_enable_txq(mvm, mac_queue, mvm_sta->sta_id, i, wdg_timeout); tid_data->txq_id = txq_id; /* * Since we don't set the seq number after reset, and HW * sets it now, FW reset will cause the seq num to start * at 0 again, so driver will need to update it * internally as well, so it keeps in sync with real val */ tid_data->seq_number = 0; } else { u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); cfg.tid = i; cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || txq_id == IWL_MVM_DQA_BSS_CLIENT_QUEUE); IWL_DEBUG_TX_QUEUES(mvm, "Re-mapping sta %d tid %d to queue %d\n", mvm_sta->sta_id, i, txq_id); iwl_mvm_enable_txq(mvm, txq_id, mac_queue, seq, &cfg, wdg_timeout); mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; } } } static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta, const u8 *addr, u16 mac_id, u16 color) { struct iwl_mvm_add_sta_cmd cmd; int ret; u32 status = ADD_STA_SUCCESS; lockdep_assert_held(&mvm->mutex); memset(&cmd, 0, sizeof(cmd)); cmd.sta_id = sta->sta_id; cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, color)); if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) cmd.station_type = sta->type; if (!iwl_mvm_has_new_tx_api(mvm)) cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); cmd.tid_disable_tx = cpu_to_le16(0xffff); if (addr) memcpy(cmd.addr, addr, ETH_ALEN); ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, iwl_mvm_add_sta_cmd_size(mvm), &cmd, &status); if (ret) return ret; switch (status & IWL_ADD_STA_STATUS_MASK) { case ADD_STA_SUCCESS: IWL_DEBUG_INFO(mvm, "Internal station added.\n"); return 0; default: ret = -EIO; IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", status); break; } return ret; } int iwl_mvm_add_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); struct iwl_mvm_rxq_dup_data *dup_data; int i, ret, sta_id; bool sta_update = false; unsigned int sta_flags = 0; lockdep_assert_held(&mvm->mutex); if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) sta_id = iwl_mvm_find_free_sta_id(mvm, ieee80211_vif_type_p2p(vif)); else sta_id = mvm_sta->sta_id; if (sta_id == IWL_MVM_INVALID_STA) return -ENOSPC; spin_lock_init(&mvm_sta->lock); /* if this is a HW restart re-alloc existing queues */ if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { struct iwl_mvm_int_sta tmp_sta = { .sta_id = sta_id, .type = mvm_sta->sta_type, }; /* * First add an empty station since allocating * a queue requires a valid station */ ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, mvmvif->id, mvmvif->color); if (ret) goto err; iwl_mvm_realloc_queues_after_restart(mvm, mvm_sta); sta_update = true; sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; goto update_fw; } mvm_sta->sta_id = sta_id; mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); mvm_sta->vif = vif; if (!mvm->trans->cfg->gen2) mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; else mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; mvm_sta->tx_protection = 0; mvm_sta->tt_tx_protection = false; mvm_sta->sta_type = sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK; /* HW restart, don't assume the memory has been zeroed */ mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ mvm_sta->tfd_queue_msk = 0; /* for HW restart - reset everything but the sequence number */ for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { u16 seq = mvm_sta->tid_data[i].seq_number; memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); mvm_sta->tid_data[i].seq_number = seq; /* * Mark all queues for this STA as unallocated and defer TX * frames until the queue is allocated */ mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames); } mvm_sta->deferred_traffic_tid_map = 0; mvm_sta->agg_tids = 0; if (iwl_mvm_has_new_rx_api(mvm) && !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { int q; dup_data = kcalloc(mvm->trans->num_rx_queues, sizeof(*dup_data), GFP_KERNEL); if (!dup_data) return -ENOMEM; /* * Initialize all the last_seq values to 0xffff which can never * compare equal to the frame's seq_ctrl in the check in * iwl_mvm_is_dup() since the lower 4 bits are the fragment * number and fragmented packets don't reach that function. * * This thus allows receiving a packet with seqno 0 and the * retry bit set as the very first packet on a new TID. */ for (q = 0; q < mvm->trans->num_rx_queues; q++) memset(dup_data[q].last_seq, 0xff, sizeof(dup_data[q].last_seq)); mvm_sta->dup_data = dup_data; } if (!iwl_mvm_has_new_tx_api(mvm)) { ret = iwl_mvm_reserve_sta_stream(mvm, sta, ieee80211_vif_type_p2p(vif)); if (ret) goto err; } /* * if rs is registered with mac80211, then "add station" will be handled * via the corresponding ops, otherwise need to notify rate scaling here */ if (iwl_mvm_has_tlc_offload(mvm)) iwl_mvm_rs_add_sta(mvm, mvm_sta); iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); update_fw: ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); if (ret) goto err; if (vif->type == NL80211_IFTYPE_STATION) { if (!sta->tdls) { WARN_ON(mvmvif->ap_sta_id != IWL_MVM_INVALID_STA); mvmvif->ap_sta_id = sta_id; } else { WARN_ON(mvmvif->ap_sta_id == IWL_MVM_INVALID_STA); } } rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); return 0; err: return ret; } int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, bool drain) { struct iwl_mvm_add_sta_cmd cmd = {}; int ret; u32 status; lockdep_assert_held(&mvm->mutex); cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); cmd.sta_id = mvmsta->sta_id; cmd.add_modify = STA_MODE_MODIFY; cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); status = ADD_STA_SUCCESS; ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, iwl_mvm_add_sta_cmd_size(mvm), &cmd, &status); if (ret) return ret; switch (status & IWL_ADD_STA_STATUS_MASK) { case ADD_STA_SUCCESS: IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", mvmsta->sta_id); break; default: ret = -EIO; IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", mvmsta->sta_id); break; } return ret; } /* * Remove a station from the FW table. Before sending the command to remove * the station validate that the station is indeed known to the driver (sanity * only). */ static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) { struct ieee80211_sta *sta; struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { .sta_id = sta_id, }; int ret; sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], lockdep_is_held(&mvm->mutex)); /* Note: internal stations are marked as error values */ if (!sta) { IWL_ERR(mvm, "Invalid station id\n"); return -EINVAL; } ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, sizeof(rm_sta_cmd), &rm_sta_cmd); if (ret) { IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); return ret; } return 0; } static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct iwl_mvm_sta *mvm_sta) { int ac; int i; lockdep_assert_held(&mvm->mutex); for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) continue; ac = iwl_mvm_tid_to_ac_queue(i); iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id, vif->hw_queue[ac], i, 0); mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; } } int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvm_sta) { int i; for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { u16 txq_id; int ret; spin_lock_bh(&mvm_sta->lock); txq_id = mvm_sta->tid_data[i].txq_id; spin_unlock_bh(&mvm_sta->lock); if (txq_id == IWL_MVM_INVALID_QUEUE) continue; ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); if (ret) return ret; } return 0; } int iwl_mvm_rm_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); u8 sta_id = mvm_sta->sta_id; int ret; lockdep_assert_held(&mvm->mutex); if (iwl_mvm_has_new_rx_api(mvm)) kfree(mvm_sta->dup_data); ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); if (ret) return ret; /* flush its queues here since we are freeing mvm_sta */ ret = iwl_mvm_flush_sta(mvm, mvm_sta, false, 0); if (ret) return ret; if (iwl_mvm_has_new_tx_api(mvm)) { ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); } else { u32 q_mask = mvm_sta->tfd_queue_msk; ret = iwl_trans_wait_tx_queues_empty(mvm->trans, q_mask); } if (ret) return ret; ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta); /* If there is a TXQ still marked as reserved - free it */ if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { u8 reserved_txq = mvm_sta->reserved_queue; enum iwl_mvm_queue_status *status; /* * If no traffic has gone through the reserved TXQ - it * is still marked as IWL_MVM_QUEUE_RESERVED, and * should be manually marked as free again */ status = &mvm->queue_info[reserved_txq].status; if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && (*status != IWL_MVM_QUEUE_FREE), "sta_id %d reserved txq %d status %d", sta_id, reserved_txq, *status)) return -EINVAL; *status = IWL_MVM_QUEUE_FREE; } if (vif->type == NL80211_IFTYPE_STATION && mvmvif->ap_sta_id == sta_id) { /* if associated - we can't remove the AP STA now */ if (vif->bss_conf.assoc) return ret; /* unassoc - go ahead - remove the AP STA now */ mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; /* clear d0i3_ap_sta_id if no longer relevant */ if (mvm->d0i3_ap_sta_id == sta_id) mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; } /* * This shouldn't happen - the TDLS channel switch should be canceled * before the STA is removed. */ if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; cancel_delayed_work(&mvm->tdls_cs.dwork); } /* * Make sure that the tx response code sees the station as -EBUSY and * calls the drain worker. */ spin_lock_bh(&mvm_sta->lock); spin_unlock_bh(&mvm_sta->lock); ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); return ret; } int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, struct ieee80211_vif *vif, u8 sta_id) { int ret = iwl_mvm_rm_sta_common(mvm, sta_id); lockdep_assert_held(&mvm->mutex); RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); return ret; } int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta, u32 qmask, enum nl80211_iftype iftype, enum iwl_sta_type type) { if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || sta->sta_id == IWL_MVM_INVALID_STA) { sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) return -ENOSPC; } sta->tfd_queue_msk = qmask; sta->type = type; /* put a non-NULL value so iterating over the stations won't stop */ rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); return 0; } void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) { RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); sta->sta_id = IWL_MVM_INVALID_STA; } static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 *queue, u8 sta_id, u8 fifo) { unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? mvm->cfg->base_params->wd_timeout : IWL_WATCHDOG_DISABLED; if (iwl_mvm_has_new_tx_api(mvm)) { int tvqm_queue = iwl_mvm_tvqm_enable_txq(mvm, *queue, sta_id, IWL_MAX_TID_COUNT, wdg_timeout); *queue = tvqm_queue; } else { struct iwl_trans_txq_scd_cfg cfg = { .fifo = fifo, .sta_id = sta_id, .tid = IWL_MAX_TID_COUNT, .aggregate = false, .frame_limit = IWL_FRAME_LIMIT, }; iwl_mvm_enable_txq(mvm, *queue, *queue, 0, &cfg, wdg_timeout); } } int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) { int ret; lockdep_assert_held(&mvm->mutex); /* Allocate aux station and assign to it the aux queue */ ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), NL80211_IFTYPE_UNSPECIFIED, IWL_STA_AUX_ACTIVITY); if (ret) return ret; /* Map Aux queue to fifo - needs to happen before adding Aux station */ if (!iwl_mvm_has_new_tx_api(mvm)) iwl_mvm_enable_aux_snif_queue(mvm, &mvm->aux_queue, mvm->aux_sta.sta_id, IWL_MVM_TX_FIFO_MCAST); ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, MAC_INDEX_AUX, 0); if (ret) { iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); return ret; } /* * For 22000 firmware and on we cannot add queue to a station unknown * to firmware so enable queue here - after the station was added */ if (iwl_mvm_has_new_tx_api(mvm)) iwl_mvm_enable_aux_snif_queue(mvm, &mvm->aux_queue, mvm->aux_sta.sta_id, IWL_MVM_TX_FIFO_MCAST); return 0; } int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); int ret; lockdep_assert_held(&mvm->mutex); /* Map snif queue to fifo - must happen before adding snif station */ if (!iwl_mvm_has_new_tx_api(mvm)) iwl_mvm_enable_aux_snif_queue(mvm, &mvm->snif_queue, mvm->snif_sta.sta_id, IWL_MVM_TX_FIFO_BE); ret = iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, mvmvif->id, 0); if (ret) return ret; /* * For 22000 firmware and on we cannot add queue to a station unknown * to firmware so enable queue here - after the station was added */ if (iwl_mvm_has_new_tx_api(mvm)) iwl_mvm_enable_aux_snif_queue(mvm, &mvm->snif_queue, mvm->snif_sta.sta_id, IWL_MVM_TX_FIFO_BE); return 0; } int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { int ret; lockdep_assert_held(&mvm->mutex); iwl_mvm_disable_txq(mvm, mvm->snif_queue, mvm->snif_queue, IWL_MAX_TID_COUNT, 0); ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); if (ret) IWL_WARN(mvm, "Failed sending remove station\n"); return ret; } void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) { iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); } void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) { lockdep_assert_held(&mvm->mutex); iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); } /* * Send the add station command for the vif's broadcast station. * Assumes that the station was already allocated. * * @mvm: the mvm component * @vif: the interface to which the broadcast station is added * @bsta: the broadcast station to add. */ int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; const u8 *baddr = _baddr; int queue; int ret; unsigned int wdg_timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); struct iwl_trans_txq_scd_cfg cfg = { .fifo = IWL_MVM_TX_FIFO_VO, .sta_id = mvmvif->bcast_sta.sta_id, .tid = IWL_MAX_TID_COUNT, .aggregate = false, .frame_limit = IWL_FRAME_LIMIT, }; lockdep_assert_held(&mvm->mutex); if (!iwl_mvm_has_new_tx_api(mvm)) { if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC) queue = mvm->probe_queue; else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) queue = mvm->p2p_dev_queue; else if (WARN(1, "Missing required TXQ for adding bcast STA\n")) return -EINVAL; bsta->tfd_queue_msk |= BIT(queue); iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[0], 0, &cfg, wdg_timeout); } if (vif->type == NL80211_IFTYPE_ADHOC) baddr = vif->bss_conf.bssid; if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) return -ENOSPC; ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, mvmvif->id, mvmvif->color); if (ret) return ret; /* * For 22000 firmware and on we cannot add queue to a station unknown * to firmware so enable queue here - after the station was added */ if (iwl_mvm_has_new_tx_api(mvm)) { queue = iwl_mvm_tvqm_enable_txq(mvm, vif->hw_queue[0], bsta->sta_id, IWL_MAX_TID_COUNT, wdg_timeout); if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC) mvm->probe_queue = queue; else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) mvm->p2p_dev_queue = queue; } return 0; } static void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); int queue; lockdep_assert_held(&mvm->mutex); iwl_mvm_flush_sta(mvm, &mvmvif->bcast_sta, true, 0); switch (vif->type) { case NL80211_IFTYPE_AP: case NL80211_IFTYPE_ADHOC: queue = mvm->probe_queue; break; case NL80211_IFTYPE_P2P_DEVICE: queue = mvm->p2p_dev_queue; break; default: WARN(1, "Can't free bcast queue on vif type %d\n", vif->type); return; } iwl_mvm_disable_txq(mvm, queue, vif->hw_queue[0], IWL_MAX_TID_COUNT, 0); if (iwl_mvm_has_new_tx_api(mvm)) return; WARN_ON(!(mvmvif->bcast_sta.tfd_queue_msk & BIT(queue))); mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(queue); } /* Send the FW a request to remove the station from it's internal data * structures, but DO NOT remove the entry from the local data structures. */ int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); int ret; lockdep_assert_held(&mvm->mutex); iwl_mvm_free_bcast_sta_queues(mvm, vif); ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); if (ret) IWL_WARN(mvm, "Failed sending remove station\n"); return ret; } int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); lockdep_assert_held(&mvm->mutex); return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, 0, ieee80211_vif_type_p2p(vif), IWL_STA_GENERAL_PURPOSE); } /* Allocate a new station entry for the broadcast station to the given vif, * and send it to the FW. * Note that each P2P mac should have its own broadcast station. * * @mvm: the mvm component * @vif: the interface to which the broadcast station is added * @bsta: the broadcast station to add. */ int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; int ret; lockdep_assert_held(&mvm->mutex); ret = iwl_mvm_alloc_bcast_sta(mvm, vif); if (ret) return ret; ret = iwl_mvm_send_add_bcast_sta(mvm, vif); if (ret) iwl_mvm_dealloc_int_sta(mvm, bsta); return ret; } void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); } /* * Send the FW a request to remove the station from it's internal data * structures, and in addition remove it from the local data structure. */ int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { int ret; lockdep_assert_held(&mvm->mutex); ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); iwl_mvm_dealloc_bcast_sta(mvm, vif); return ret; } /* * Allocate a new station entry for the multicast station to the given vif, * and send it to the FW. * Note that each AP/GO mac should have its own multicast station. * * @mvm: the mvm component * @vif: the interface to which the multicast station is added */ int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_mvm_int_sta *msta = &mvmvif->mcast_sta; static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; const u8 *maddr = _maddr; struct iwl_trans_txq_scd_cfg cfg = { .fifo = IWL_MVM_TX_FIFO_MCAST, .sta_id = msta->sta_id, .tid = 0, .aggregate = false, .frame_limit = IWL_FRAME_LIMIT, }; unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); int ret; lockdep_assert_held(&mvm->mutex); if (WARN_ON(vif->type != NL80211_IFTYPE_AP && vif->type != NL80211_IFTYPE_ADHOC)) return -ENOTSUPP; /* * In IBSS, ieee80211_check_queues() sets the cab_queue to be * invalid, so make sure we use the queue we want. * Note that this is done here as we want to avoid making DQA * changes in mac80211 layer. */ if (vif->type == NL80211_IFTYPE_ADHOC) { vif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; mvmvif->cab_queue = vif->cab_queue; } /* * While in previous FWs we had to exclude cab queue from TFD queue * mask, now it is needed as any other queue. */ if (!iwl_mvm_has_new_tx_api(mvm) && fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { iwl_mvm_enable_txq(mvm, vif->cab_queue, vif->cab_queue, 0, &cfg, timeout); msta->tfd_queue_msk |= BIT(vif->cab_queue); } ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, mvmvif->id, mvmvif->color); if (ret) { iwl_mvm_dealloc_int_sta(mvm, msta); return ret; } /* * Enable cab queue after the ADD_STA command is sent. * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG * command with unknown station id, and for FW that doesn't support * station API since the cab queue is not included in the * tfd_queue_mask. */ if (iwl_mvm_has_new_tx_api(mvm)) { int queue = iwl_mvm_tvqm_enable_txq(mvm, vif->cab_queue, msta->sta_id, 0, timeout); mvmvif->cab_queue = queue; } else if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) iwl_mvm_enable_txq(mvm, vif->cab_queue, vif->cab_queue, 0, &cfg, timeout); if (mvmvif->ap_wep_key) { u8 key_offset = iwl_mvm_set_fw_key_idx(mvm); if (key_offset == STA_KEY_IDX_INVALID) return -ENOSPC; ret = iwl_mvm_send_sta_key(mvm, mvmvif->mcast_sta.sta_id, mvmvif->ap_wep_key, 1, 0, NULL, 0, key_offset, 0); if (ret) return ret; } return 0; } /* * Send the FW a request to remove the station from it's internal data * structures, and in addition remove it from the local data structure. */ int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); int ret; lockdep_assert_held(&mvm->mutex); iwl_mvm_flush_sta(mvm, &mvmvif->mcast_sta, true, 0); iwl_mvm_disable_txq(mvm, mvmvif->cab_queue, vif->cab_queue, 0, 0); ret = iwl_mvm_rm_sta_common(mvm, mvmvif->mcast_sta.sta_id); if (ret) IWL_WARN(mvm, "Failed sending remove station\n"); return ret; } #define IWL_MAX_RX_BA_SESSIONS 16 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) { struct iwl_mvm_delba_notif notif = { .metadata.type = IWL_MVM_RXQ_NOTIF_DEL_BA, .metadata.sync = 1, .delba.baid = baid, }; iwl_mvm_sync_rx_queues_internal(mvm, (void *)¬if, sizeof(notif)); }; static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, struct iwl_mvm_baid_data *data) { int i; iwl_mvm_sync_rxq_del_ba(mvm, data->baid); for (i = 0; i < mvm->trans->num_rx_queues; i++) { int j; struct iwl_mvm_reorder_buffer *reorder_buf = &data->reorder_buf[i]; struct iwl_mvm_reorder_buf_entry *entries = &data->entries[i * data->entries_per_queue]; spin_lock_bh(&reorder_buf->lock); if (likely(!reorder_buf->num_stored)) { spin_unlock_bh(&reorder_buf->lock); continue; } /* * This shouldn't happen in regular DELBA since the internal * delBA notification should trigger a release of all frames in * the reorder buffer. */ WARN_ON(1); for (j = 0; j < reorder_buf->buf_size; j++) __skb_queue_purge(&entries[j].e.frames); /* * Prevent timer re-arm. This prevents a very far fetched case * where we timed out on the notification. There may be prior * RX frames pending in the RX queue before the notification * that might get processed between now and the actual deletion * and we would re-arm the timer although we are deleting the * reorder buffer. */ reorder_buf->removed = true; spin_unlock_bh(&reorder_buf->lock); del_timer_sync(&reorder_buf->reorder_timer); } } static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, struct iwl_mvm_baid_data *data, u16 ssn, u16 buf_size) { int i; for (i = 0; i < mvm->trans->num_rx_queues; i++) { struct iwl_mvm_reorder_buffer *reorder_buf = &data->reorder_buf[i]; struct iwl_mvm_reorder_buf_entry *entries = &data->entries[i * data->entries_per_queue]; int j; reorder_buf->num_stored = 0; reorder_buf->head_sn = ssn; reorder_buf->buf_size = buf_size; /* rx reorder timer */ timer_setup(&reorder_buf->reorder_timer, iwl_mvm_reorder_timer_expired, 0); spin_lock_init(&reorder_buf->lock); reorder_buf->mvm = mvm; reorder_buf->queue = i; reorder_buf->valid = false; for (j = 0; j < reorder_buf->buf_size; j++) __skb_queue_head_init(&entries[j].e.frames); } } int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) { struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); struct iwl_mvm_add_sta_cmd cmd = {}; struct iwl_mvm_baid_data *baid_data = NULL; int ret; u32 status; lockdep_assert_held(&mvm->mutex); if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); return -ENOSPC; } if (iwl_mvm_has_new_rx_api(mvm) && start) { u16 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); /* sparse doesn't like the __align() so don't check */ #ifndef __CHECKER__ /* * The division below will be OK if either the cache line size * can be divided by the entry size (ALIGN will round up) or if * if the entry size can be divided by the cache line size, in * which case the ALIGN() will do nothing. */ BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); #endif /* * Upward align the reorder buffer size to fill an entire cache * line for each queue, to avoid sharing cache lines between * different queues. */ reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); /* * Allocate here so if allocation fails we can bail out early * before starting the BA session in the firmware */ baid_data = kzalloc(sizeof(*baid_data) + mvm->trans->num_rx_queues * reorder_buf_size, GFP_KERNEL); if (!baid_data) return -ENOMEM; /* * This division is why we need the above BUILD_BUG_ON(), * if that doesn't hold then this will not be right. */ baid_data->entries_per_queue = reorder_buf_size / sizeof(baid_data->entries[0]); } cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); cmd.sta_id = mvm_sta->sta_id; cmd.add_modify = STA_MODE_MODIFY; if (start) { cmd.add_immediate_ba_tid = (u8) tid; cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); cmd.rx_ba_window = cpu_to_le16(buf_size); } else { cmd.remove_immediate_ba_tid = (u8) tid; } cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : STA_MODIFY_REMOVE_BA_TID; status = ADD_STA_SUCCESS; ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, iwl_mvm_add_sta_cmd_size(mvm), &cmd, &status); if (ret) goto out_free; switch (status & IWL_ADD_STA_STATUS_MASK) { case ADD_STA_SUCCESS: IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", start ? "start" : "stopp"); break; case ADD_STA_IMMEDIATE_BA_FAILURE: IWL_WARN(mvm, "RX BA Session refused by fw\n"); ret = -ENOSPC; break; default: ret = -EIO; IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", start ? "start" : "stopp", status); break; } if (ret) goto out_free; if (start) { u8 baid; mvm->rx_ba_sessions++; if (!iwl_mvm_has_new_rx_api(mvm)) return 0; if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) { ret = -EINVAL; goto out_free; } baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >> IWL_ADD_STA_BAID_SHIFT); baid_data->baid = baid; baid_data->timeout = timeout; baid_data->last_rx = jiffies; baid_data->rcu_ptr = &mvm->baid_map[baid]; timer_setup(&baid_data->session_timer, iwl_mvm_rx_agg_session_expired, 0); baid_data->mvm = mvm; baid_data->tid = tid; baid_data->sta_id = mvm_sta->sta_id; mvm_sta->tid_to_baid[tid] = baid; if (timeout) mod_timer(&baid_data->session_timer, TU_TO_EXP_TIME(timeout * 2)); iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); /* * protect the BA data with RCU to cover a case where our * internal RX sync mechanism will timeout (not that it's * supposed to happen) and we will free the session data while * RX is being processed in parallel */ IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", mvm_sta->sta_id, tid, baid); WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); rcu_assign_pointer(mvm->baid_map[baid], baid_data); } else { u8 baid = mvm_sta->tid_to_baid[tid]; if (mvm->rx_ba_sessions > 0) /* check that restart flow didn't zero the counter */ mvm->rx_ba_sessions--; if (!iwl_mvm_has_new_rx_api(mvm)) return 0; if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) return -EINVAL; baid_data = rcu_access_pointer(mvm->baid_map[baid]); if (WARN_ON(!baid_data)) return -EINVAL; /* synchronize all rx queues so we can safely delete */ iwl_mvm_free_reorder(mvm, baid_data); del_timer_sync(&baid_data->session_timer); RCU_INIT_POINTER(mvm->baid_map[baid], NULL); kfree_rcu(baid_data, rcu_head); IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); } return 0; out_free: kfree(baid_data); return ret; } int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, int tid, u8 queue, bool start) { struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); struct iwl_mvm_add_sta_cmd cmd = {}; int ret; u32 status; lockdep_assert_held(&mvm->mutex); if (start) { mvm_sta->tfd_queue_msk |= BIT(queue); mvm_sta->tid_disable_agg &= ~BIT(tid); } else { /* In DQA-mode the queue isn't removed on agg termination */ mvm_sta->tid_disable_agg |= BIT(tid); } cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); cmd.sta_id = mvm_sta->sta_id; cmd.add_modify = STA_MODE_MODIFY; if (!iwl_mvm_has_new_tx_api(mvm)) cmd.modify_mask = STA_MODIFY_QUEUES; cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); status = ADD_STA_SUCCESS; ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, iwl_mvm_add_sta_cmd_size(mvm), &cmd, &status); if (ret) return ret; switch (status & IWL_ADD_STA_STATUS_MASK) { case ADD_STA_SUCCESS: break; default: ret = -EIO; IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", start ? "start" : "stopp", status); break; } return ret; } const u8 tid_to_mac80211_ac[] = { IEEE80211_AC_BE, IEEE80211_AC_BK, IEEE80211_AC_BK, IEEE80211_AC_BE, IEEE80211_AC_VI, IEEE80211_AC_VI, IEEE80211_AC_VO, IEEE80211_AC_VO, IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ }; static const u8 tid_to_ucode_ac[] = { AC_BE, AC_BK, AC_BK, AC_BE, AC_VI, AC_VI, AC_VO, AC_VO, }; int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_sta *sta, u16 tid, u16 *ssn) { struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); struct iwl_mvm_tid_data *tid_data; u16 normalized_ssn; int txq_id; int ret; if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) return -EINVAL; if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && mvmsta->tid_data[tid].state != IWL_AGG_OFF) { IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", mvmsta->tid_data[tid].state); return -ENXIO; } lockdep_assert_held(&mvm->mutex); if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && iwl_mvm_has_new_tx_api(mvm)) { u8 ac = tid_to_mac80211_ac[tid]; ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); if (ret) return ret; } spin_lock_bh(&mvmsta->lock); /* possible race condition - we entered D0i3 while starting agg */ if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { spin_unlock_bh(&mvmsta->lock); IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); return -EIO; } /* * Note the possible cases: * 1. An enabled TXQ - TXQ needs to become agg'ed * 2. The TXQ hasn't yet been enabled, so find a free one and mark * it as reserved */ txq_id = mvmsta->tid_data[tid].txq_id; if (txq_id == IWL_MVM_INVALID_QUEUE) { txq_id = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, IWL_MVM_DQA_MIN_DATA_QUEUE, IWL_MVM_DQA_MAX_DATA_QUEUE); if (txq_id < 0) { ret = txq_id; IWL_ERR(mvm, "Failed to allocate agg queue\n"); goto out; } /* TXQ hasn't yet been enabled, so mark it only as reserved */ mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; } else if (unlikely(mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_SHARED)) { ret = -ENXIO; IWL_DEBUG_TX_QUEUES(mvm, "Can't start tid %d agg on shared queue!\n", tid); goto out; } IWL_DEBUG_TX_QUEUES(mvm, "AGG for tid %d will be on queue #%d\n", tid, txq_id); tid_data = &mvmsta->tid_data[tid]; tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); tid_data->txq_id = txq_id; *ssn = tid_data->ssn; IWL_DEBUG_TX_QUEUES(mvm, "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", mvmsta->sta_id, tid, txq_id, tid_data->ssn, tid_data->next_reclaimed); /* * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need * to align the wrap around of ssn so we compare relevant values. */ normalized_ssn = tid_data->ssn; if (mvm->trans->cfg->gen2) normalized_ssn &= 0xff; if (normalized_ssn == tid_data->next_reclaimed) { tid_data->state = IWL_AGG_STARTING; ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); } else { tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; } ret = 0; out: spin_unlock_bh(&mvmsta->lock); return ret; } int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_sta *sta, u16 tid, u16 buf_size, bool amsdu) { struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; unsigned int wdg_timeout = iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); int queue, ret; bool alloc_queue = true; enum iwl_mvm_queue_status queue_status; u16 ssn; struct iwl_trans_txq_scd_cfg cfg = { .sta_id = mvmsta->sta_id, .tid = tid, .frame_limit = buf_size, .aggregate = true, }; /* * When FW supports TLC_OFFLOAD, it also implements Tx aggregation * manager, so this function should never be called in this case. */ if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) return -EINVAL; BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) != IWL_MAX_TID_COUNT); spin_lock_bh(&mvmsta->lock); ssn = tid_data->ssn; queue = tid_data->txq_id; tid_data->state = IWL_AGG_ON; mvmsta->agg_tids |= BIT(tid); tid_data->ssn = 0xffff; tid_data->amsdu_in_ampdu_allowed = amsdu; spin_unlock_bh(&mvmsta->lock); if (iwl_mvm_has_new_tx_api(mvm)) { /* * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() * would have failed, so if we are here there is no need to * allocate a queue. * However, if aggregation size is different than the default * size, the scheduler should be reconfigured. * We cannot do this with the new TX API, so return unsupported * for now, until it will be offloaded to firmware.. * Note that if SCD default value changes - this condition * should be updated as well. */ if (buf_size < IWL_FRAME_LIMIT) return -ENOTSUPP; ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); if (ret) return -EIO; goto out; } cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; queue_status = mvm->queue_info[queue].status; /* Maybe there is no need to even alloc a queue... */ if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) alloc_queue = false; /* * Only reconfig the SCD for the queue if the window size has * changed from current (become smaller) */ if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { /* * If reconfiguring an existing queue, it first must be * drained */ ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); if (ret) { IWL_ERR(mvm, "Error draining queue before reconfig\n"); return ret; } ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, mvmsta->sta_id, tid, buf_size, ssn); if (ret) { IWL_ERR(mvm, "Error reconfiguring TXQ #%d\n", queue); return ret; } } if (alloc_queue) iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[tid_to_mac80211_ac[tid]], ssn, &cfg, wdg_timeout); /* Send ADD_STA command to enable aggs only if the queue isn't shared */ if (queue_status != IWL_MVM_QUEUE_SHARED) { ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); if (ret) return -EIO; } /* No need to mark as reserved */ mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; out: /* * Even though in theory the peer could have different * aggregation reorder buffer sizes for different sessions, * our ucode doesn't allow for that and has a global limit * for each station. Therefore, use the minimum of all the * aggregation sessions and our default value. */ mvmsta->max_agg_bufsize = min(mvmsta->max_agg_bufsize, buf_size); mvmsta->lq_sta.rs_drv.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", sta->addr, tid); return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.rs_drv.lq, false); } static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, struct iwl_mvm_tid_data *tid_data) { u16 txq_id = tid_data->txq_id; lockdep_assert_held(&mvm->mutex); if (iwl_mvm_has_new_tx_api(mvm)) return; /* * The TXQ is marked as reserved only if no traffic came through yet * This means no traffic has been sent on this TID (agg'd or not), so * we no longer have use for the queue. Since it hasn't even been * allocated through iwl_mvm_enable_txq, so we can just mark it back as * free. */ if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; tid_data->txq_id = IWL_MVM_INVALID_QUEUE; } } int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_sta *sta, u16 tid) { struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; u16 txq_id; int err; /* * If mac80211 is cleaning its state, then say that we finished since * our state has been cleared anyway. */ if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); return 0; } spin_lock_bh(&mvmsta->lock); txq_id = tid_data->txq_id; IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", mvmsta->sta_id, tid, txq_id, tid_data->state); mvmsta->agg_tids &= ~BIT(tid); iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); switch (tid_data->state) { case IWL_AGG_ON: tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); IWL_DEBUG_TX_QUEUES(mvm, "ssn = %d, next_recl = %d\n", tid_data->ssn, tid_data->next_reclaimed); tid_data->ssn = 0xffff; tid_data->state = IWL_AGG_OFF; spin_unlock_bh(&mvmsta->lock); ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); return 0; case IWL_AGG_STARTING: case IWL_EMPTYING_HW_QUEUE_ADDBA: /* * The agg session has been stopped before it was set up. This * can happen when the AddBA timer times out for example. */ /* No barriers since we are under mutex */ lockdep_assert_held(&mvm->mutex); ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); tid_data->state = IWL_AGG_OFF; err = 0; break; default: IWL_ERR(mvm, "Stopping AGG while state not ON or starting for %d on %d (%d)\n", mvmsta->sta_id, tid, tid_data->state); IWL_ERR(mvm, "\ttid_data->txq_id = %d\n", tid_data->txq_id); err = -EINVAL; } spin_unlock_bh(&mvmsta->lock); return err; } int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_sta *sta, u16 tid) { struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; u16 txq_id; enum iwl_mvm_agg_state old_state; /* * First set the agg state to OFF to avoid calling * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. */ spin_lock_bh(&mvmsta->lock); txq_id = tid_data->txq_id; IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", mvmsta->sta_id, tid, txq_id, tid_data->state); old_state = tid_data->state; tid_data->state = IWL_AGG_OFF; mvmsta->agg_tids &= ~BIT(tid); spin_unlock_bh(&mvmsta->lock); iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); if (old_state >= IWL_AGG_ON) { iwl_mvm_drain_sta(mvm, mvmsta, true); if (iwl_mvm_has_new_tx_api(mvm)) { if (iwl_mvm_flush_sta_tids(mvm, mvmsta->sta_id, BIT(tid), 0)) IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); iwl_trans_wait_txq_empty(mvm->trans, txq_id); } else { if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); } iwl_mvm_drain_sta(mvm, mvmsta, false); iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); } return 0; } static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) { int i, max = -1, max_offs = -1; lockdep_assert_held(&mvm->mutex); /* Pick the unused key offset with the highest 'deleted' * counter. Every time a key is deleted, all the counters * are incremented and the one that was just deleted is * reset to zero. Thus, the highest counter is the one * that was deleted longest ago. Pick that one. */ for (i = 0; i < STA_KEY_MAX_NUM; i++) { if (test_bit(i, mvm->fw_key_table)) continue; if (mvm->fw_key_deleted[i] > max) { max = mvm->fw_key_deleted[i]; max_offs = i; } } if (max_offs < 0) return STA_KEY_IDX_INVALID; return max_offs; } static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); if (sta) return iwl_mvm_sta_from_mac80211(sta); /* * The device expects GTKs for station interfaces to be * installed as GTKs for the AP station. If we have no * station ID, then use AP's station ID. */ if (vif->type == NL80211_IFTYPE_STATION && mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { u8 sta_id = mvmvif->ap_sta_id; sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], lockdep_is_held(&mvm->mutex)); /* * It is possible that the 'sta' parameter is NULL, * for example when a GTK is removed - the sta_id will then * be the AP ID, and no station was passed by mac80211. */ if (IS_ERR_OR_NULL(sta)) return NULL; return iwl_mvm_sta_from_mac80211(sta); } return NULL; } static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, u32 sta_id, struct ieee80211_key_conf *key, bool mcast, u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, u8 key_offset, bool mfp) { union { struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; struct iwl_mvm_add_sta_key_cmd cmd; } u = {}; __le16 key_flags; int ret; u32 status; u16 keyidx; u64 pn = 0; int i, size; bool new_api = fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TKIP_MIC_KEYS); if (sta_id == IWL_MVM_INVALID_STA) return -EINVAL; keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & STA_KEY_FLG_KEYID_MSK; key_flags = cpu_to_le16(keyidx); key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); switch (key->cipher) { case WLAN_CIPHER_SUITE_TKIP: key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); if (new_api) { memcpy((void *)&u.cmd.tx_mic_key, &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], IWL_MIC_KEY_SIZE); memcpy((void *)&u.cmd.rx_mic_key, &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], IWL_MIC_KEY_SIZE); pn = atomic64_read(&key->tx_pn); } else { u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; for (i = 0; i < 5; i++) u.cmd_v1.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); } memcpy(u.cmd.common.key, key->key, key->keylen); break; case WLAN_CIPHER_SUITE_CCMP: key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); memcpy(u.cmd.common.key, key->key, key->keylen); if (new_api) pn = atomic64_read(&key->tx_pn); break; case WLAN_CIPHER_SUITE_WEP104: key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); /* fall through */ case WLAN_CIPHER_SUITE_WEP40: key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); memcpy(u.cmd.common.key + 3, key->key, key->keylen); break; case WLAN_CIPHER_SUITE_GCMP_256: key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); /* fall through */ case WLAN_CIPHER_SUITE_GCMP: key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); memcpy(u.cmd.common.key, key->key, key->keylen); if (new_api) pn = atomic64_read(&key->tx_pn); break; default: key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); memcpy(u.cmd.common.key, key->key, key->keylen); } if (mcast) key_flags |= cpu_to_le16(STA_KEY_MULTICAST); if (mfp) key_flags |= cpu_to_le16(STA_KEY_MFP); u.cmd.common.key_offset = key_offset; u.cmd.common.key_flags = key_flags; u.cmd.common.sta_id = sta_id; if (new_api) { u.cmd.transmit_seq_cnt = cpu_to_le64(pn); size = sizeof(u.cmd); } else { size = sizeof(u.cmd_v1); } status = ADD_STA_SUCCESS; if (cmd_flags & CMD_ASYNC) ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, &u.cmd); else ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, &status); switch (status) { case ADD_STA_SUCCESS: IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); break; default: ret = -EIO; IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); break; } return ret; } static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, struct ieee80211_key_conf *keyconf, u8 sta_id, bool remove_key) { struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; /* verify the key details match the required command's expectations */ if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || (keyconf->keyidx != 4 && keyconf->keyidx != 5) || (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) return -EINVAL; if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) return -EINVAL; igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); igtk_cmd.sta_id = cpu_to_le32(sta_id); if (remove_key) { igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); } else { struct ieee80211_key_seq seq; const u8 *pn; switch (keyconf->cipher) { case WLAN_CIPHER_SUITE_AES_CMAC: igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); break; case WLAN_CIPHER_SUITE_BIP_GMAC_128: case WLAN_CIPHER_SUITE_BIP_GMAC_256: igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); break; default: return -EINVAL; } memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); ieee80211_get_key_rx_seq(keyconf, 0, &seq); pn = seq.aes_cmac.pn; igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | ((u64) pn[4] << 8) | ((u64) pn[3] << 16) | ((u64) pn[2] << 24) | ((u64) pn[1] << 32) | ((u64) pn[0] << 40)); } IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", remove_key ? "removing" : "installing", igtk_cmd.sta_id); if (!iwl_mvm_has_new_rx_api(mvm)) { struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { .ctrl_flags = igtk_cmd.ctrl_flags, .key_id = igtk_cmd.key_id, .sta_id = igtk_cmd.sta_id, .receive_seq_cnt = igtk_cmd.receive_seq_cnt }; memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, ARRAY_SIZE(igtk_cmd_v1.igtk)); return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, sizeof(igtk_cmd_v1), &igtk_cmd_v1); } return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, sizeof(igtk_cmd), &igtk_cmd); } static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); if (sta) return sta->addr; if (vif->type == NL80211_IFTYPE_STATION && mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { u8 sta_id = mvmvif->ap_sta_id; sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], lockdep_is_held(&mvm->mutex)); return sta->addr; } return NULL; } static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct ieee80211_key_conf *keyconf, u8 key_offset, bool mcast) { int ret; const u8 *addr; struct ieee80211_key_seq seq; u16 p1k[5]; u32 sta_id; bool mfp = false; if (sta) { struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); sta_id = mvm_sta->sta_id; mfp = sta->mfp; } else if (vif->type == NL80211_IFTYPE_AP && !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); sta_id = mvmvif->mcast_sta.sta_id; } else { IWL_ERR(mvm, "Failed to find station id\n"); return -EINVAL; } switch (keyconf->cipher) { case WLAN_CIPHER_SUITE_TKIP: addr = iwl_mvm_get_mac_addr(mvm, vif, sta); /* get phase 1 key from mac80211 */ ieee80211_get_key_rx_seq(keyconf, 0, &seq); ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, seq.tkip.iv32, p1k, 0, key_offset, mfp); break; case WLAN_CIPHER_SUITE_CCMP: case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_WEP104: case WLAN_CIPHER_SUITE_GCMP: case WLAN_CIPHER_SUITE_GCMP_256: ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 0, NULL, 0, key_offset, mfp); break; default: ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 0, NULL, 0, key_offset, mfp); } return ret; } static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, struct ieee80211_key_conf *keyconf, bool mcast) { union { struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; struct iwl_mvm_add_sta_key_cmd cmd; } u = {}; bool new_api = fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TKIP_MIC_KEYS); __le16 key_flags; int ret, size; u32 status; /* This is a valid situation for GTK removal */ if (sta_id == IWL_MVM_INVALID_STA) return 0; key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & STA_KEY_FLG_KEYID_MSK); key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); if (mcast) key_flags |= cpu_to_le16(STA_KEY_MULTICAST); /* * The fields assigned here are in the same location at the start * of the command, so we can do this union trick. */ u.cmd.common.key_flags = key_flags; u.cmd.common.key_offset = keyconf->hw_key_idx; u.cmd.common.sta_id = sta_id; size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); status = ADD_STA_SUCCESS; ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, &status); switch (status) { case ADD_STA_SUCCESS: IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); break; default: ret = -EIO; IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); break; } return ret; } int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct ieee80211_key_conf *keyconf, u8 key_offset) { bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); struct iwl_mvm_sta *mvm_sta; u8 sta_id = IWL_MVM_INVALID_STA; int ret; static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; lockdep_assert_held(&mvm->mutex); if (vif->type != NL80211_IFTYPE_AP || keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { /* Get the station id from the mvm local station table */ mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); if (!mvm_sta) { IWL_ERR(mvm, "Failed to find station\n"); return -EINVAL; } sta_id = mvm_sta->sta_id; /* * It is possible that the 'sta' parameter is NULL, and thus * there is a need to retrieve the sta from the local station * table. */ if (!sta) { sta = rcu_dereference_protected( mvm->fw_id_to_mac_id[sta_id], lockdep_is_held(&mvm->mutex)); if (IS_ERR_OR_NULL(sta)) { IWL_ERR(mvm, "Invalid station id\n"); return -EINVAL; } } if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) return -EINVAL; } else { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); sta_id = mvmvif->mcast_sta.sta_id; } if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); goto end; } /* If the key_offset is not pre-assigned, we need to find a * new offset to use. In normal cases, the offset is not * pre-assigned, but during HW_RESTART we want to reuse the * same indices, so we pass them when this function is called. * * In D3 entry, we need to hardcoded the indices (because the * firmware hardcodes the PTK offset to 0). In this case, we * need to make sure we don't overwrite the hw_key_idx in the * keyconf structure, because otherwise we cannot configure * the original ones back when resuming. */ if (key_offset == STA_KEY_IDX_INVALID) { key_offset = iwl_mvm_set_fw_key_idx(mvm); if (key_offset == STA_KEY_IDX_INVALID) return -ENOSPC; keyconf->hw_key_idx = key_offset; } ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); if (ret) goto end; /* * For WEP, the same key is used for multicast and unicast. Upload it * again, using the same key offset, and now pointing the other one * to the same key slot (offset). * If this fails, remove the original as well. */ if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && sta) { ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, !mcast); if (ret) { __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); goto end; } } __set_bit(key_offset, mvm->fw_key_table); end: IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", keyconf->cipher, keyconf->keylen, keyconf->keyidx, sta ? sta->addr : zero_addr, ret); return ret; } int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct ieee80211_key_conf *keyconf) { bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); struct iwl_mvm_sta *mvm_sta; u8 sta_id = IWL_MVM_INVALID_STA; int ret, i; lockdep_assert_held(&mvm->mutex); /* Get the station from the mvm local station table */ mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); if (mvm_sta) sta_id = mvm_sta->sta_id; else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) sta_id = iwl_mvm_vif_from_mac80211(vif)->mcast_sta.sta_id; IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", keyconf->keyidx, sta_id); if (mvm_sta && (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)) return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { IWL_ERR(mvm, "offset %d not used in fw key table.\n", keyconf->hw_key_idx); return -ENOENT; } /* track which key was deleted last */ for (i = 0; i < STA_KEY_MAX_NUM; i++) { if (mvm->fw_key_deleted[i] < U8_MAX) mvm->fw_key_deleted[i]++; } mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; if (sta && !mvm_sta) { IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); return 0; } ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); if (ret) return ret; /* delete WEP key twice to get rid of (now useless) offset */ if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); return ret; } void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_key_conf *keyconf, struct ieee80211_sta *sta, u32 iv32, u16 *phase1key) { struct iwl_mvm_sta *mvm_sta; bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); bool mfp = sta ? sta->mfp : false; rcu_read_lock(); mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); if (WARN_ON_ONCE(!mvm_sta)) goto unlock; iwl_mvm_send_sta_key(mvm, mvm_sta->sta_id, keyconf, mcast, iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, mfp); unlock: rcu_read_unlock(); } void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, struct ieee80211_sta *sta) { struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); struct iwl_mvm_add_sta_cmd cmd = { .add_modify = STA_MODE_MODIFY, .sta_id = mvmsta->sta_id, .station_flags_msk = cpu_to_le32(STA_FLG_PS), .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), }; int ret; ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, iwl_mvm_add_sta_cmd_size(mvm), &cmd); if (ret) IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); } void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, struct ieee80211_sta *sta, enum ieee80211_frame_release_type reason, u16 cnt, u16 tids, bool more_data, bool single_sta_queue) { struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); struct iwl_mvm_add_sta_cmd cmd = { .add_modify = STA_MODE_MODIFY, .sta_id = mvmsta->sta_id, .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, .sleep_tx_count = cpu_to_le16(cnt), .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), }; int tid, ret; unsigned long _tids = tids; /* convert TIDs to ACs - we don't support TSPEC so that's OK * Note that this field is reserved and unused by firmware not * supporting GO uAPSD, so it's safe to always do this. */ for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); /* If we're releasing frames from aggregation or dqa queues then check * if all the queues that we're releasing frames from, combined, have: * - more frames than the service period, in which case more_data * needs to be set * - fewer than 'cnt' frames, in which case we need to adjust the * firmware command (but do that unconditionally) */ if (single_sta_queue) { int remaining = cnt; int sleep_tx_count; spin_lock_bh(&mvmsta->lock); for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { struct iwl_mvm_tid_data *tid_data; u16 n_queued; tid_data = &mvmsta->tid_data[tid]; n_queued = iwl_mvm_tid_queued(mvm, tid_data); if (n_queued > remaining) { more_data = true; remaining = 0; break; } remaining -= n_queued; } sleep_tx_count = cnt - remaining; if (reason == IEEE80211_FRAME_RELEASE_UAPSD) mvmsta->sleep_tx_count = sleep_tx_count; spin_unlock_bh(&mvmsta->lock); cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); if (WARN_ON(cnt - remaining == 0)) { ieee80211_sta_eosp(sta); return; } } /* Note: this is ignored by firmware not supporting GO uAPSD */ if (more_data) cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { mvmsta->next_status_eosp = true; cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; } else { cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; } /* block the Tx queues until the FW updated the sleep Tx count */ iwl_trans_block_txq_ptrs(mvm->trans, true); ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, iwl_mvm_add_sta_cmd_size(mvm), &cmd); if (ret) IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); } void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; struct ieee80211_sta *sta; u32 sta_id = le32_to_cpu(notif->sta_id); if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) return; rcu_read_lock(); sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); if (!IS_ERR_OR_NULL(sta)) ieee80211_sta_eosp(sta); rcu_read_unlock(); } void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, bool disable) { struct iwl_mvm_add_sta_cmd cmd = { .add_modify = STA_MODE_MODIFY, .sta_id = mvmsta->sta_id, .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), }; int ret; ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, iwl_mvm_add_sta_cmd_size(mvm), &cmd); if (ret) IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); } void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, struct ieee80211_sta *sta, bool disable) { struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); spin_lock_bh(&mvm_sta->lock); if (mvm_sta->disable_tx == disable) { spin_unlock_bh(&mvm_sta->lock); return; } mvm_sta->disable_tx = disable; /* Tell mac80211 to start/stop queuing tx for this station */ ieee80211_sta_block_awake(mvm->hw, sta, disable); iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); spin_unlock_bh(&mvm_sta->lock); } static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, struct iwl_mvm_vif *mvmvif, struct iwl_mvm_int_sta *sta, bool disable) { u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); struct iwl_mvm_add_sta_cmd cmd = { .add_modify = STA_MODE_MODIFY, .sta_id = sta->sta_id, .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), .mac_id_n_color = cpu_to_le32(id), }; int ret; ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 0, iwl_mvm_add_sta_cmd_size(mvm), &cmd); if (ret) IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); } void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, struct iwl_mvm_vif *mvmvif, bool disable) { struct ieee80211_sta *sta; struct iwl_mvm_sta *mvm_sta; int i; lockdep_assert_held(&mvm->mutex); /* Block/unblock all the stations of the given mvmvif */ for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], lockdep_is_held(&mvm->mutex)); if (IS_ERR_OR_NULL(sta)) continue; mvm_sta = iwl_mvm_sta_from_mac80211(sta); if (mvm_sta->mac_id_n_color != FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) continue; iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); } if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) return; /* Need to block/unblock also multicast station */ if (mvmvif->mcast_sta.sta_id != IWL_MVM_INVALID_STA) iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, &mvmvif->mcast_sta, disable); /* * Only unblock the broadcast station (FW blocks it for immediate * quiet, not the driver) */ if (!disable && mvmvif->bcast_sta.sta_id != IWL_MVM_INVALID_STA) iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, &mvmvif->bcast_sta, disable); } void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_mvm_sta *mvmsta; rcu_read_lock(); mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); if (!WARN_ON(!mvmsta)) iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); rcu_read_unlock(); } u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) { u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); /* * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need * to align the wrap around of ssn so we compare relevant values. */ if (mvm->trans->cfg->gen2) sn &= 0xff; return ieee80211_sn_sub(sn, tid_data->next_reclaimed); }
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