Thomas Gleixner | d2912cb | 2019-06-04 10:11:33 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2 | /* |
| 3 | * Copyright 2002-2005, Instant802 Networks, Inc. |
| 4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> |
Johannes Berg | d98ad83 | 2014-09-03 15:24:57 +0300 | [diff] [blame] | 5 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
Johannes Berg | dcba665 | 2017-04-26 14:51:20 +0200 | [diff] [blame] | 6 | * Copyright (C) 2015 - 2017 Intel Deutschland GmbH |
Ilan Peer | 52b4810 | 2020-01-31 13:12:56 +0200 | [diff] [blame] | 7 | * Copyright (C) 2018-2020 Intel Corporation |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #include <linux/module.h> |
| 11 | #include <linux/init.h> |
Felix Fietkau | 888d04d | 2012-03-01 15:22:09 +0100 | [diff] [blame] | 12 | #include <linux/etherdevice.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 13 | #include <linux/netdevice.h> |
| 14 | #include <linux/types.h> |
| 15 | #include <linux/slab.h> |
| 16 | #include <linux/skbuff.h> |
| 17 | #include <linux/if_arp.h> |
Johannes Berg | 0d17440 | 2007-12-17 15:07:43 +0100 | [diff] [blame] | 18 | #include <linux/timer.h> |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 19 | #include <linux/rtnetlink.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 20 | |
Toke Høiland-Jørgensen | 484a54c | 2017-04-06 11:38:26 +0200 | [diff] [blame] | 21 | #include <net/codel.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 22 | #include <net/mac80211.h> |
| 23 | #include "ieee80211_i.h" |
Johannes Berg | 2448798 | 2009-04-23 18:52:52 +0200 | [diff] [blame] | 24 | #include "driver-ops.h" |
Johannes Berg | 2c8dccc | 2008-04-08 15:14:40 -0400 | [diff] [blame] | 25 | #include "rate.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 26 | #include "sta_info.h" |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 27 | #include "debugfs_sta.h" |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 28 | #include "mesh.h" |
Johannes Berg | ce662b44 | 2011-09-29 16:04:34 +0200 | [diff] [blame] | 29 | #include "wme.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 30 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 31 | /** |
| 32 | * DOC: STA information lifetime rules |
| 33 | * |
| 34 | * STA info structures (&struct sta_info) are managed in a hash table |
| 35 | * for faster lookup and a list for iteration. They are managed using |
| 36 | * RCU, i.e. access to the list and hash table is protected by RCU. |
| 37 | * |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 38 | * Upon allocating a STA info structure with sta_info_alloc(), the caller |
| 39 | * owns that structure. It must then insert it into the hash table using |
| 40 | * either sta_info_insert() or sta_info_insert_rcu(); only in the latter |
| 41 | * case (which acquires an rcu read section but must not be called from |
| 42 | * within one) will the pointer still be valid after the call. Note that |
| 43 | * the caller may not do much with the STA info before inserting it, in |
| 44 | * particular, it may not start any mesh peer link management or add |
| 45 | * encryption keys. |
Johannes Berg | 93e5deb | 2008-04-01 15:21:00 +0200 | [diff] [blame] | 46 | * |
| 47 | * When the insertion fails (sta_info_insert()) returns non-zero), the |
| 48 | * structure will have been freed by sta_info_insert()! |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 49 | * |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 50 | * Station entries are added by mac80211 when you establish a link with a |
Luis R. Rodriguez | 7e189a1 | 2009-06-02 18:38:14 -0400 | [diff] [blame] | 51 | * peer. This means different things for the different type of interfaces |
| 52 | * we support. For a regular station this mean we add the AP sta when we |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 53 | * receive an association response from the AP. For IBSS this occurs when |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 54 | * get to know about a peer on the same IBSS. For WDS we add the sta for |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 55 | * the peer immediately upon device open. When using AP mode we add stations |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 56 | * for each respective station upon request from userspace through nl80211. |
Luis R. Rodriguez | 7e189a1 | 2009-06-02 18:38:14 -0400 | [diff] [blame] | 57 | * |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 58 | * In order to remove a STA info structure, various sta_info_destroy_*() |
| 59 | * calls are available. |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 60 | * |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 61 | * There is no concept of ownership on a STA entry, each structure is |
| 62 | * owned by the global hash table/list until it is removed. All users of |
| 63 | * the structure need to be RCU protected so that the structure won't be |
| 64 | * freed before they are done using it. |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 65 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 66 | |
Johannes Berg | 7bedd0c | 2015-02-13 21:55:15 +0100 | [diff] [blame] | 67 | static const struct rhashtable_params sta_rht_params = { |
| 68 | .nelem_hint = 3, /* start small */ |
Johannes Berg | caf22d3 | 2015-04-24 11:10:10 +0200 | [diff] [blame] | 69 | .automatic_shrinking = true, |
Johannes Berg | 7bedd0c | 2015-02-13 21:55:15 +0100 | [diff] [blame] | 70 | .head_offset = offsetof(struct sta_info, hash_node), |
Johannes Berg | ac100ce | 2015-06-16 16:22:12 +0200 | [diff] [blame] | 71 | .key_offset = offsetof(struct sta_info, addr), |
Johannes Berg | 7bedd0c | 2015-02-13 21:55:15 +0100 | [diff] [blame] | 72 | .key_len = ETH_ALEN, |
Johannes Berg | ebd82b3 | 2015-04-23 17:26:06 +0200 | [diff] [blame] | 73 | .max_size = CONFIG_MAC80211_STA_HASH_MAX_SIZE, |
Johannes Berg | 7bedd0c | 2015-02-13 21:55:15 +0100 | [diff] [blame] | 74 | }; |
| 75 | |
Johannes Berg | 4d33960 | 2011-12-15 11:24:20 +0100 | [diff] [blame] | 76 | /* Caller must hold local->sta_mtx */ |
Michael Wu | be8755e | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 77 | static int sta_info_hash_del(struct ieee80211_local *local, |
| 78 | struct sta_info *sta) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 79 | { |
Herbert Xu | 83e7e4c | 2016-09-19 19:00:10 +0800 | [diff] [blame] | 80 | return rhltable_remove(&local->sta_hash, &sta->hash_node, |
| 81 | sta_rht_params); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 82 | } |
| 83 | |
Johannes Berg | 5108ca8 | 2014-02-17 20:49:03 +0100 | [diff] [blame] | 84 | static void __cleanup_single_sta(struct sta_info *sta) |
Eliad Peller | b22cfcf | 2012-09-09 14:43:51 +0300 | [diff] [blame] | 85 | { |
Eliad Peller | b22cfcf | 2012-09-09 14:43:51 +0300 | [diff] [blame] | 86 | int ac, i; |
| 87 | struct tid_ampdu_tx *tid_tx; |
| 88 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
| 89 | struct ieee80211_local *local = sdata->local; |
Marco Porsch | d012a60 | 2012-10-10 12:39:50 -0700 | [diff] [blame] | 90 | struct ps_data *ps; |
Eliad Peller | b22cfcf | 2012-09-09 14:43:51 +0300 | [diff] [blame] | 91 | |
Johannes Berg | e3685e0 | 2014-02-20 11:19:58 +0100 | [diff] [blame] | 92 | if (test_sta_flag(sta, WLAN_STA_PS_STA) || |
Johannes Berg | 5ac2e35 | 2014-05-27 16:32:27 +0200 | [diff] [blame] | 93 | test_sta_flag(sta, WLAN_STA_PS_DRIVER) || |
| 94 | test_sta_flag(sta, WLAN_STA_PS_DELIVER)) { |
Marco Porsch | d012a60 | 2012-10-10 12:39:50 -0700 | [diff] [blame] | 95 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
| 96 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
| 97 | ps = &sdata->bss->ps; |
Marco Porsch | 3f52b7e | 2013-01-30 18:14:08 +0100 | [diff] [blame] | 98 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
| 99 | ps = &sdata->u.mesh.ps; |
Marco Porsch | d012a60 | 2012-10-10 12:39:50 -0700 | [diff] [blame] | 100 | else |
| 101 | return; |
Eliad Peller | b22cfcf | 2012-09-09 14:43:51 +0300 | [diff] [blame] | 102 | |
| 103 | clear_sta_flag(sta, WLAN_STA_PS_STA); |
Johannes Berg | e3685e0 | 2014-02-20 11:19:58 +0100 | [diff] [blame] | 104 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); |
Johannes Berg | 5ac2e35 | 2014-05-27 16:32:27 +0200 | [diff] [blame] | 105 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); |
Eliad Peller | b22cfcf | 2012-09-09 14:43:51 +0300 | [diff] [blame] | 106 | |
Marco Porsch | d012a60 | 2012-10-10 12:39:50 -0700 | [diff] [blame] | 107 | atomic_dec(&ps->num_sta_ps); |
Eliad Peller | b22cfcf | 2012-09-09 14:43:51 +0300 | [diff] [blame] | 108 | } |
| 109 | |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 110 | if (sta->sta.txq[0]) { |
| 111 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { |
Johannes Berg | adf8ed0 | 2018-08-31 11:31:08 +0300 | [diff] [blame] | 112 | struct txq_info *txqi; |
| 113 | |
| 114 | if (!sta->sta.txq[i]) |
| 115 | continue; |
| 116 | |
| 117 | txqi = to_txq_info(sta->sta.txq[i]); |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 118 | |
Michal Kazior | fa962b9 | 2016-05-19 10:37:49 +0200 | [diff] [blame] | 119 | ieee80211_txq_purge(local, txqi); |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 120 | } |
| 121 | } |
| 122 | |
Eliad Peller | b22cfcf | 2012-09-09 14:43:51 +0300 | [diff] [blame] | 123 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
| 124 | local->total_ps_buffered -= skb_queue_len(&sta->ps_tx_buf[ac]); |
Felix Fietkau | 1f98ab7 | 2012-11-10 03:44:14 +0100 | [diff] [blame] | 125 | ieee80211_purge_tx_queue(&local->hw, &sta->ps_tx_buf[ac]); |
| 126 | ieee80211_purge_tx_queue(&local->hw, &sta->tx_filtered[ac]); |
Eliad Peller | b22cfcf | 2012-09-09 14:43:51 +0300 | [diff] [blame] | 127 | } |
| 128 | |
Thomas Pedersen | 45b5028 | 2013-02-06 10:17:21 -0800 | [diff] [blame] | 129 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
| 130 | mesh_sta_cleanup(sta); |
Eliad Peller | b22cfcf | 2012-09-09 14:43:51 +0300 | [diff] [blame] | 131 | |
Johannes Berg | 5ac2e35 | 2014-05-27 16:32:27 +0200 | [diff] [blame] | 132 | cancel_work_sync(&sta->drv_deliver_wk); |
Eliad Peller | b22cfcf | 2012-09-09 14:43:51 +0300 | [diff] [blame] | 133 | |
| 134 | /* |
| 135 | * Destroy aggregation state here. It would be nice to wait for the |
| 136 | * driver to finish aggregation stop and then clean up, but for now |
| 137 | * drivers have to handle aggregation stop being requested, followed |
| 138 | * directly by station destruction. |
| 139 | */ |
Johannes Berg | 5a306f5 | 2012-11-14 23:22:21 +0100 | [diff] [blame] | 140 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { |
Johannes Berg | 661eb38 | 2013-06-12 22:47:56 +0200 | [diff] [blame] | 141 | kfree(sta->ampdu_mlme.tid_start_tx[i]); |
Eliad Peller | b22cfcf | 2012-09-09 14:43:51 +0300 | [diff] [blame] | 142 | tid_tx = rcu_dereference_raw(sta->ampdu_mlme.tid_tx[i]); |
| 143 | if (!tid_tx) |
| 144 | continue; |
Felix Fietkau | 1f98ab7 | 2012-11-10 03:44:14 +0100 | [diff] [blame] | 145 | ieee80211_purge_tx_queue(&local->hw, &tid_tx->pending); |
Eliad Peller | b22cfcf | 2012-09-09 14:43:51 +0300 | [diff] [blame] | 146 | kfree(tid_tx); |
| 147 | } |
Johannes Berg | 5108ca8 | 2014-02-17 20:49:03 +0100 | [diff] [blame] | 148 | } |
Eliad Peller | b22cfcf | 2012-09-09 14:43:51 +0300 | [diff] [blame] | 149 | |
Johannes Berg | 5108ca8 | 2014-02-17 20:49:03 +0100 | [diff] [blame] | 150 | static void cleanup_single_sta(struct sta_info *sta) |
| 151 | { |
| 152 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
| 153 | struct ieee80211_local *local = sdata->local; |
| 154 | |
| 155 | __cleanup_single_sta(sta); |
Eliad Peller | b22cfcf | 2012-09-09 14:43:51 +0300 | [diff] [blame] | 156 | sta_info_free(local, sta); |
| 157 | } |
| 158 | |
Herbert Xu | 83e7e4c | 2016-09-19 19:00:10 +0800 | [diff] [blame] | 159 | struct rhlist_head *sta_info_hash_lookup(struct ieee80211_local *local, |
| 160 | const u8 *addr) |
| 161 | { |
| 162 | return rhltable_lookup(&local->sta_hash, addr, sta_rht_params); |
| 163 | } |
| 164 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 165 | /* protected by RCU */ |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 166 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
| 167 | const u8 *addr) |
Johannes Berg | 43ba7e9 | 2008-02-21 14:09:30 +0100 | [diff] [blame] | 168 | { |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 169 | struct ieee80211_local *local = sdata->local; |
Herbert Xu | 83e7e4c | 2016-09-19 19:00:10 +0800 | [diff] [blame] | 170 | struct rhlist_head *tmp; |
Johannes Berg | 60f4b62 | 2015-04-23 14:02:30 +0200 | [diff] [blame] | 171 | struct sta_info *sta; |
Johannes Berg | 43ba7e9 | 2008-02-21 14:09:30 +0100 | [diff] [blame] | 172 | |
Johannes Berg | 60f4b62 | 2015-04-23 14:02:30 +0200 | [diff] [blame] | 173 | rcu_read_lock(); |
Herbert Xu | 83e7e4c | 2016-09-19 19:00:10 +0800 | [diff] [blame] | 174 | for_each_sta_info(local, addr, sta, tmp) { |
Johannes Berg | 60f4b62 | 2015-04-23 14:02:30 +0200 | [diff] [blame] | 175 | if (sta->sdata == sdata) { |
| 176 | rcu_read_unlock(); |
| 177 | /* this is safe as the caller must already hold |
| 178 | * another rcu read section or the mutex |
| 179 | */ |
| 180 | return sta; |
| 181 | } |
| 182 | } |
| 183 | rcu_read_unlock(); |
| 184 | return NULL; |
Johannes Berg | 43ba7e9 | 2008-02-21 14:09:30 +0100 | [diff] [blame] | 185 | } |
| 186 | |
Felix Fietkau | 0e5ded5 | 2010-01-08 18:10:58 +0100 | [diff] [blame] | 187 | /* |
| 188 | * Get sta info either from the specified interface |
| 189 | * or from one of its vlans |
| 190 | */ |
| 191 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, |
| 192 | const u8 *addr) |
| 193 | { |
| 194 | struct ieee80211_local *local = sdata->local; |
Herbert Xu | 83e7e4c | 2016-09-19 19:00:10 +0800 | [diff] [blame] | 195 | struct rhlist_head *tmp; |
Felix Fietkau | 0e5ded5 | 2010-01-08 18:10:58 +0100 | [diff] [blame] | 196 | struct sta_info *sta; |
| 197 | |
Johannes Berg | 7bedd0c | 2015-02-13 21:55:15 +0100 | [diff] [blame] | 198 | rcu_read_lock(); |
Herbert Xu | 83e7e4c | 2016-09-19 19:00:10 +0800 | [diff] [blame] | 199 | for_each_sta_info(local, addr, sta, tmp) { |
Johannes Berg | 7bedd0c | 2015-02-13 21:55:15 +0100 | [diff] [blame] | 200 | if (sta->sdata == sdata || |
| 201 | (sta->sdata->bss && sta->sdata->bss == sdata->bss)) { |
| 202 | rcu_read_unlock(); |
| 203 | /* this is safe as the caller must already hold |
| 204 | * another rcu read section or the mutex |
| 205 | */ |
| 206 | return sta; |
| 207 | } |
Felix Fietkau | 0e5ded5 | 2010-01-08 18:10:58 +0100 | [diff] [blame] | 208 | } |
Johannes Berg | 7bedd0c | 2015-02-13 21:55:15 +0100 | [diff] [blame] | 209 | rcu_read_unlock(); |
| 210 | return NULL; |
Felix Fietkau | 0e5ded5 | 2010-01-08 18:10:58 +0100 | [diff] [blame] | 211 | } |
| 212 | |
Toke Høiland-Jørgensen | 5072f73 | 2019-11-12 14:08:35 +0100 | [diff] [blame] | 213 | struct sta_info *sta_info_get_by_addrs(struct ieee80211_local *local, |
| 214 | const u8 *sta_addr, const u8 *vif_addr) |
| 215 | { |
| 216 | struct rhlist_head *tmp; |
| 217 | struct sta_info *sta; |
| 218 | |
| 219 | for_each_sta_info(local, sta_addr, sta, tmp) { |
| 220 | if (ether_addr_equal(vif_addr, sta->sdata->vif.addr)) |
| 221 | return sta; |
| 222 | } |
| 223 | |
| 224 | return NULL; |
| 225 | } |
| 226 | |
Johannes Berg | 3b53fde8 | 2009-11-16 12:00:37 +0100 | [diff] [blame] | 227 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
| 228 | int idx) |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 229 | { |
Johannes Berg | 3b53fde8 | 2009-11-16 12:00:37 +0100 | [diff] [blame] | 230 | struct ieee80211_local *local = sdata->local; |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 231 | struct sta_info *sta; |
| 232 | int i = 0; |
| 233 | |
Madhuparna Bhowmik | 8ca47eb | 2020-04-09 13:59:06 +0530 | [diff] [blame] | 234 | list_for_each_entry_rcu(sta, &local->sta_list, list, |
| 235 | lockdep_is_held(&local->sta_mtx)) { |
Johannes Berg | 3b53fde8 | 2009-11-16 12:00:37 +0100 | [diff] [blame] | 236 | if (sdata != sta->sdata) |
Luis Carlos Cobo | 2a8ca29 | 2008-02-29 17:51:25 -0800 | [diff] [blame] | 237 | continue; |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 238 | if (i < idx) { |
| 239 | ++i; |
| 240 | continue; |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 241 | } |
Luis Carlos Cobo | 2a8ca29 | 2008-02-29 17:51:25 -0800 | [diff] [blame] | 242 | return sta; |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 243 | } |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 244 | |
| 245 | return NULL; |
| 246 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 247 | |
Johannes Berg | 93e5deb | 2008-04-01 15:21:00 +0200 | [diff] [blame] | 248 | /** |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 249 | * sta_info_free - free STA |
Johannes Berg | 93e5deb | 2008-04-01 15:21:00 +0200 | [diff] [blame] | 250 | * |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 251 | * @local: pointer to the global information |
Johannes Berg | 93e5deb | 2008-04-01 15:21:00 +0200 | [diff] [blame] | 252 | * @sta: STA info to free |
| 253 | * |
| 254 | * This function must undo everything done by sta_info_alloc() |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 255 | * that may happen before sta_info_insert(). It may only be |
| 256 | * called when sta_info_insert() has not been attempted (and |
| 257 | * if that fails, the station is freed anyway.) |
Johannes Berg | 93e5deb | 2008-04-01 15:21:00 +0200 | [diff] [blame] | 258 | */ |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 259 | void sta_info_free(struct ieee80211_local *local, struct sta_info *sta) |
Johannes Berg | 93e5deb | 2008-04-01 15:21:00 +0200 | [diff] [blame] | 260 | { |
Johannes Berg | dcd479e | 2020-10-09 14:17:11 +0200 | [diff] [blame] | 261 | /* |
| 262 | * If we had used sta_info_pre_move_state() then we might not |
| 263 | * have gone through the state transitions down again, so do |
| 264 | * it here now (and warn if it's inserted). |
| 265 | * |
| 266 | * This will clear state such as fast TX/RX that may have been |
| 267 | * allocated during state transitions. |
| 268 | */ |
| 269 | while (sta->sta_state > IEEE80211_STA_NONE) { |
| 270 | int ret; |
| 271 | |
| 272 | WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED)); |
| 273 | |
| 274 | ret = sta_info_move_state(sta, sta->sta_state - 1); |
| 275 | if (WARN_ONCE(ret, "sta_info_move_state() returned %d\n", ret)) |
| 276 | break; |
| 277 | } |
| 278 | |
Johannes Berg | 889cbb9 | 2012-01-17 10:33:29 +0100 | [diff] [blame] | 279 | if (sta->rate_ctrl) |
Johannes Berg | af65cd96 | 2009-11-17 18:18:36 +0100 | [diff] [blame] | 280 | rate_control_free_sta(sta); |
Johannes Berg | 93e5deb | 2008-04-01 15:21:00 +0200 | [diff] [blame] | 281 | |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 282 | sta_dbg(sta->sdata, "Destroyed STA %pM\n", sta->sta.addr); |
Johannes Berg | 93e5deb | 2008-04-01 15:21:00 +0200 | [diff] [blame] | 283 | |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 284 | if (sta->sta.txq[0]) |
| 285 | kfree(to_txq_info(sta->sta.txq[0])); |
Felix Fietkau | 53d0452 | 2014-05-27 22:33:57 +0200 | [diff] [blame] | 286 | kfree(rcu_dereference_raw(sta->sta.rates)); |
Johannes Berg | 433f5bc | 2015-06-17 10:31:00 +0200 | [diff] [blame] | 287 | #ifdef CONFIG_MAC80211_MESH |
| 288 | kfree(sta->mesh); |
| 289 | #endif |
Johannes Berg | c9c5962 | 2016-03-31 20:02:11 +0300 | [diff] [blame] | 290 | free_percpu(sta->pcpu_rx_stats); |
Johannes Berg | 93e5deb | 2008-04-01 15:21:00 +0200 | [diff] [blame] | 291 | kfree(sta); |
| 292 | } |
| 293 | |
Johannes Berg | 4d33960 | 2011-12-15 11:24:20 +0100 | [diff] [blame] | 294 | /* Caller must hold local->sta_mtx */ |
Johannes Berg | 62b14b2 | 2016-03-31 17:22:45 +0200 | [diff] [blame] | 295 | static int sta_info_hash_add(struct ieee80211_local *local, |
| 296 | struct sta_info *sta) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 297 | { |
Herbert Xu | 83e7e4c | 2016-09-19 19:00:10 +0800 | [diff] [blame] | 298 | return rhltable_insert(&local->sta_hash, &sta->hash_node, |
| 299 | sta_rht_params); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 300 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 301 | |
Johannes Berg | 5ac2e35 | 2014-05-27 16:32:27 +0200 | [diff] [blame] | 302 | static void sta_deliver_ps_frames(struct work_struct *wk) |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 303 | { |
| 304 | struct sta_info *sta; |
| 305 | |
Johannes Berg | 5ac2e35 | 2014-05-27 16:32:27 +0200 | [diff] [blame] | 306 | sta = container_of(wk, struct sta_info, drv_deliver_wk); |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 307 | |
| 308 | if (sta->dead) |
| 309 | return; |
| 310 | |
Johannes Berg | 5ac2e35 | 2014-05-27 16:32:27 +0200 | [diff] [blame] | 311 | local_bh_disable(); |
| 312 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 313 | ieee80211_sta_ps_deliver_wakeup(sta); |
Johannes Berg | 5ac2e35 | 2014-05-27 16:32:27 +0200 | [diff] [blame] | 314 | else if (test_and_clear_sta_flag(sta, WLAN_STA_PSPOLL)) |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 315 | ieee80211_sta_ps_deliver_poll_response(sta); |
Johannes Berg | 5ac2e35 | 2014-05-27 16:32:27 +0200 | [diff] [blame] | 316 | else if (test_and_clear_sta_flag(sta, WLAN_STA_UAPSD)) |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 317 | ieee80211_sta_ps_deliver_uapsd(sta); |
Johannes Berg | 5ac2e35 | 2014-05-27 16:32:27 +0200 | [diff] [blame] | 318 | local_bh_enable(); |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 319 | } |
| 320 | |
Johannes Berg | af65cd96 | 2009-11-17 18:18:36 +0100 | [diff] [blame] | 321 | static int sta_prepare_rate_control(struct ieee80211_local *local, |
| 322 | struct sta_info *sta, gfp_t gfp) |
| 323 | { |
Johannes Berg | 30686bf | 2015-06-02 21:39:54 +0200 | [diff] [blame] | 324 | if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) |
Johannes Berg | af65cd96 | 2009-11-17 18:18:36 +0100 | [diff] [blame] | 325 | return 0; |
| 326 | |
Johannes Berg | 889cbb9 | 2012-01-17 10:33:29 +0100 | [diff] [blame] | 327 | sta->rate_ctrl = local->rate_ctrl; |
Johannes Berg | af65cd96 | 2009-11-17 18:18:36 +0100 | [diff] [blame] | 328 | sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl, |
Johannes Berg | 35c347a | 2015-03-05 16:10:08 +0100 | [diff] [blame] | 329 | sta, gfp); |
Johannes Berg | 889cbb9 | 2012-01-17 10:33:29 +0100 | [diff] [blame] | 330 | if (!sta->rate_ctrl_priv) |
Johannes Berg | af65cd96 | 2009-11-17 18:18:36 +0100 | [diff] [blame] | 331 | return -ENOMEM; |
Johannes Berg | af65cd96 | 2009-11-17 18:18:36 +0100 | [diff] [blame] | 332 | |
| 333 | return 0; |
| 334 | } |
| 335 | |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 336 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | 5654416 | 2011-12-14 13:28:46 +0100 | [diff] [blame] | 337 | const u8 *addr, gfp_t gfp) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 338 | { |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 339 | struct ieee80211_local *local = sdata->local; |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 340 | struct ieee80211_hw *hw = &local->hw; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 341 | struct sta_info *sta; |
Ron Rindjunsky | 16c5f15 | 2007-12-25 17:00:34 +0200 | [diff] [blame] | 342 | int i; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 343 | |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 344 | sta = kzalloc(sizeof(*sta) + hw->sta_data_size, gfp); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 345 | if (!sta) |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 346 | return NULL; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 347 | |
Johannes Berg | c9c5962 | 2016-03-31 20:02:11 +0300 | [diff] [blame] | 348 | if (ieee80211_hw_check(hw, USES_RSS)) { |
| 349 | sta->pcpu_rx_stats = |
Sara Sharon | 95f3ce6 | 2018-02-19 14:48:37 +0200 | [diff] [blame] | 350 | alloc_percpu_gfp(struct ieee80211_sta_rx_stats, gfp); |
Johannes Berg | c9c5962 | 2016-03-31 20:02:11 +0300 | [diff] [blame] | 351 | if (!sta->pcpu_rx_stats) |
| 352 | goto free; |
| 353 | } |
| 354 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 355 | spin_lock_init(&sta->lock); |
Emmanuel Grumbach | 1d147bf | 2014-02-20 09:22:11 +0200 | [diff] [blame] | 356 | spin_lock_init(&sta->ps_lock); |
Johannes Berg | 5ac2e35 | 2014-05-27 16:32:27 +0200 | [diff] [blame] | 357 | INIT_WORK(&sta->drv_deliver_wk, sta_deliver_ps_frames); |
Johannes Berg | 67c282c | 2010-06-10 10:21:43 +0200 | [diff] [blame] | 358 | INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work); |
Johannes Berg | a93e364 | 2010-06-10 10:21:46 +0200 | [diff] [blame] | 359 | mutex_init(&sta->ampdu_mlme.mtx); |
Thomas Pedersen | 87f59c7 | 2013-03-01 22:02:52 -0800 | [diff] [blame] | 360 | #ifdef CONFIG_MAC80211_MESH |
Johannes Berg | 433f5bc | 2015-06-17 10:31:00 +0200 | [diff] [blame] | 361 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
| 362 | sta->mesh = kzalloc(sizeof(*sta->mesh), gfp); |
| 363 | if (!sta->mesh) |
| 364 | goto free; |
Kees Cook | 4c02d62 | 2017-10-05 10:39:10 -0700 | [diff] [blame] | 365 | sta->mesh->plink_sta = sta; |
Johannes Berg | 433f5bc | 2015-06-17 10:31:00 +0200 | [diff] [blame] | 366 | spin_lock_init(&sta->mesh->plink_lock); |
| 367 | if (ieee80211_vif_is_mesh(&sdata->vif) && |
| 368 | !sdata->u.mesh.user_mpm) |
Kees Cook | 4c02d62 | 2017-10-05 10:39:10 -0700 | [diff] [blame] | 369 | timer_setup(&sta->mesh->plink_timer, mesh_plink_timer, |
| 370 | 0); |
Johannes Berg | 433f5bc | 2015-06-17 10:31:00 +0200 | [diff] [blame] | 371 | sta->mesh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE; |
| 372 | } |
Thomas Pedersen | 87f59c7 | 2013-03-01 22:02:52 -0800 | [diff] [blame] | 373 | #endif |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 374 | |
Johannes Berg | ac100ce | 2015-06-16 16:22:12 +0200 | [diff] [blame] | 375 | memcpy(sta->addr, addr, ETH_ALEN); |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 376 | memcpy(sta->sta.addr, addr, ETH_ALEN); |
Maxim Altshul | 480dd46 | 2016-08-22 17:14:04 +0300 | [diff] [blame] | 377 | sta->sta.max_rx_aggregation_subframes = |
| 378 | local->hw.max_rx_aggregation_subframes; |
| 379 | |
Alexander Wetzel | 96fc6ef | 2019-03-19 21:34:08 +0100 | [diff] [blame] | 380 | /* Extended Key ID needs to install keys for keyid 0 and 1 Rx-only. |
| 381 | * The Tx path starts to use a key as soon as the key slot ptk_idx |
| 382 | * references to is not NULL. To not use the initial Rx-only key |
| 383 | * prematurely for Tx initialize ptk_idx to an impossible PTK keyid |
| 384 | * which always will refer to a NULL key. |
| 385 | */ |
| 386 | BUILD_BUG_ON(ARRAY_SIZE(sta->ptk) <= INVALID_PTK_KEYIDX); |
| 387 | sta->ptk_idx = INVALID_PTK_KEYIDX; |
| 388 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 389 | sta->local = local; |
| 390 | sta->sdata = sdata; |
Johannes Berg | e5a9f8d | 2015-10-16 17:54:47 +0200 | [diff] [blame] | 391 | sta->rx_stats.last_rx = jiffies; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 392 | |
Johannes Berg | 0f9c5a6 | 2016-03-31 20:02:09 +0300 | [diff] [blame] | 393 | u64_stats_init(&sta->rx_stats.syncp); |
| 394 | |
Johannes Berg | 71ec375 | 2012-01-20 13:55:20 +0100 | [diff] [blame] | 395 | sta->sta_state = IEEE80211_STA_NONE; |
| 396 | |
Liad Kaufman | b6da911 | 2014-11-19 13:47:38 +0200 | [diff] [blame] | 397 | /* Mark TID as unreserved */ |
| 398 | sta->reserved_tid = IEEE80211_TID_UNRESERVED; |
| 399 | |
Arnd Bergmann | 84b0060 | 2015-09-30 13:26:36 +0200 | [diff] [blame] | 400 | sta->last_connected = ktime_get_seconds(); |
Johannes Berg | 0be6ed1 | 2016-03-31 20:02:05 +0300 | [diff] [blame] | 401 | ewma_signal_init(&sta->rx_stats_avg.signal); |
Balaji Pothunoori | cc60dbb | 2018-04-16 20:18:41 +0530 | [diff] [blame] | 402 | ewma_avg_signal_init(&sta->status_stats.avg_ack_signal); |
Johannes Berg | 0be6ed1 | 2016-03-31 20:02:05 +0300 | [diff] [blame] | 403 | for (i = 0; i < ARRAY_SIZE(sta->rx_stats_avg.chain_signal); i++) |
| 404 | ewma_signal_init(&sta->rx_stats_avg.chain_signal[i]); |
Bruno Randolf | 541a45a | 2010-12-02 19:12:43 +0900 | [diff] [blame] | 405 | |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 406 | if (local->ops->wake_tx_queue) { |
| 407 | void *txq_data; |
| 408 | int size = sizeof(struct txq_info) + |
| 409 | ALIGN(hw->txq_data_size, sizeof(void *)); |
| 410 | |
| 411 | txq_data = kcalloc(ARRAY_SIZE(sta->sta.txq), size, gfp); |
| 412 | if (!txq_data) |
| 413 | goto free; |
| 414 | |
| 415 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { |
| 416 | struct txq_info *txq = txq_data + i * size; |
| 417 | |
Johannes Berg | adf8ed0 | 2018-08-31 11:31:08 +0300 | [diff] [blame] | 418 | /* might not do anything for the bufferable MMPDU TXQ */ |
Michal Kazior | fa962b9 | 2016-05-19 10:37:49 +0200 | [diff] [blame] | 419 | ieee80211_txq_init(sdata, sta, txq, i); |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 420 | } |
Johannes Berg | abfbc3a | 2015-02-25 10:03:25 +0100 | [diff] [blame] | 421 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 422 | |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 423 | if (sta_prepare_rate_control(local, sta, gfp)) |
| 424 | goto free_txq; |
| 425 | |
Toke Høiland-Jørgensen | b4809e9 | 2018-12-18 17:02:08 -0800 | [diff] [blame] | 426 | sta->airtime_weight = IEEE80211_DEFAULT_AIRTIME_WEIGHT; |
| 427 | |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 428 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
| 429 | skb_queue_head_init(&sta->ps_tx_buf[i]); |
| 430 | skb_queue_head_init(&sta->tx_filtered[i]); |
Toke Høiland-Jørgensen | b4809e9 | 2018-12-18 17:02:08 -0800 | [diff] [blame] | 431 | sta->airtime[i].deficit = sta->airtime_weight; |
Kan Yan | 3ace10f | 2019-11-18 22:06:09 -0800 | [diff] [blame] | 432 | atomic_set(&sta->airtime[i].aql_tx_pending, 0); |
| 433 | sta->airtime[i].aql_limit_low = local->aql_txq_limit_low[i]; |
| 434 | sta->airtime[i].aql_limit_high = local->aql_txq_limit_high[i]; |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 435 | } |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 436 | |
Johannes Berg | 5a306f5 | 2012-11-14 23:22:21 +0100 | [diff] [blame] | 437 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
Alexey Dobriyan | 4be929b | 2010-05-24 14:33:03 -0700 | [diff] [blame] | 438 | sta->last_seq_ctrl[i] = cpu_to_le16(USHRT_MAX); |
Senthil Balasubramanian | cccaec9 | 2009-05-14 18:42:08 +0530 | [diff] [blame] | 439 | |
Johannes Berg | bd718fc | 2019-05-29 15:25:35 +0300 | [diff] [blame] | 440 | for (i = 0; i < NUM_NL80211_BANDS; i++) { |
| 441 | u32 mandatory = 0; |
| 442 | int r; |
| 443 | |
| 444 | if (!hw->wiphy->bands[i]) |
| 445 | continue; |
| 446 | |
| 447 | switch (i) { |
| 448 | case NL80211_BAND_2GHZ: |
| 449 | /* |
| 450 | * We use both here, even if we cannot really know for |
| 451 | * sure the station will support both, but the only use |
| 452 | * for this is when we don't know anything yet and send |
| 453 | * management frames, and then we'll pick the lowest |
| 454 | * possible rate anyway. |
| 455 | * If we don't include _G here, we cannot find a rate |
| 456 | * in P2P, and thus trigger the WARN_ONCE() in rate.c |
| 457 | */ |
| 458 | mandatory = IEEE80211_RATE_MANDATORY_B | |
| 459 | IEEE80211_RATE_MANDATORY_G; |
| 460 | break; |
| 461 | case NL80211_BAND_5GHZ: |
| 462 | mandatory = IEEE80211_RATE_MANDATORY_A; |
| 463 | break; |
| 464 | case NL80211_BAND_60GHZ: |
| 465 | WARN_ON(1); |
| 466 | mandatory = 0; |
| 467 | break; |
| 468 | } |
| 469 | |
| 470 | for (r = 0; r < hw->wiphy->bands[i]->n_bitrates; r++) { |
| 471 | struct ieee80211_rate *rate; |
| 472 | |
| 473 | rate = &hw->wiphy->bands[i]->bitrates[r]; |
| 474 | |
| 475 | if (!(rate->flags & mandatory)) |
| 476 | continue; |
| 477 | sta->sta.supp_rates[i] |= BIT(r); |
| 478 | } |
| 479 | } |
| 480 | |
Johannes Berg | af0ed69 | 2013-02-12 14:21:00 +0100 | [diff] [blame] | 481 | sta->sta.smps_mode = IEEE80211_SMPS_OFF; |
Emmanuel Grumbach | 687da13 | 2013-10-01 16:45:43 +0300 | [diff] [blame] | 482 | if (sdata->vif.type == NL80211_IFTYPE_AP || |
| 483 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
Mohammed Shafi Shajakhan | 21a8e9d | 2017-04-27 12:45:38 +0530 | [diff] [blame] | 484 | struct ieee80211_supported_band *sband; |
| 485 | u8 smps; |
| 486 | |
| 487 | sband = ieee80211_get_sband(sdata); |
| 488 | if (!sband) |
| 489 | goto free_txq; |
| 490 | |
| 491 | smps = (sband->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >> |
| 492 | IEEE80211_HT_CAP_SM_PS_SHIFT; |
Emmanuel Grumbach | 687da13 | 2013-10-01 16:45:43 +0300 | [diff] [blame] | 493 | /* |
| 494 | * Assume that hostapd advertises our caps in the beacon and |
| 495 | * this is the known_smps_mode for a station that just assciated |
| 496 | */ |
| 497 | switch (smps) { |
| 498 | case WLAN_HT_SMPS_CONTROL_DISABLED: |
| 499 | sta->known_smps_mode = IEEE80211_SMPS_OFF; |
| 500 | break; |
| 501 | case WLAN_HT_SMPS_CONTROL_STATIC: |
| 502 | sta->known_smps_mode = IEEE80211_SMPS_STATIC; |
| 503 | break; |
| 504 | case WLAN_HT_SMPS_CONTROL_DYNAMIC: |
| 505 | sta->known_smps_mode = IEEE80211_SMPS_DYNAMIC; |
| 506 | break; |
| 507 | default: |
| 508 | WARN_ON(1); |
| 509 | } |
| 510 | } |
Johannes Berg | af0ed69 | 2013-02-12 14:21:00 +0100 | [diff] [blame] | 511 | |
Felix Fietkau | 6e0456b | 2016-03-03 22:59:00 +0100 | [diff] [blame] | 512 | sta->sta.max_rc_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_BA; |
| 513 | |
Toke Høiland-Jørgensen | 484a54c | 2017-04-06 11:38:26 +0200 | [diff] [blame] | 514 | sta->cparams.ce_threshold = CODEL_DISABLED_THRESHOLD; |
| 515 | sta->cparams.target = MS2TIME(20); |
| 516 | sta->cparams.interval = MS2TIME(100); |
| 517 | sta->cparams.ecn = true; |
| 518 | |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 519 | sta_dbg(sdata, "Allocated STA %pM\n", sta->sta.addr); |
Johannes Berg | ef04a29 | 2014-01-06 15:56:59 +0100 | [diff] [blame] | 520 | |
Johannes Berg | abfbc3a | 2015-02-25 10:03:25 +0100 | [diff] [blame] | 521 | return sta; |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 522 | |
| 523 | free_txq: |
| 524 | if (sta->sta.txq[0]) |
| 525 | kfree(to_txq_info(sta->sta.txq[0])); |
| 526 | free: |
Sara Sharon | d78d9ee | 2018-02-19 14:48:35 +0200 | [diff] [blame] | 527 | free_percpu(sta->pcpu_rx_stats); |
Johannes Berg | 433f5bc | 2015-06-17 10:31:00 +0200 | [diff] [blame] | 528 | #ifdef CONFIG_MAC80211_MESH |
| 529 | kfree(sta->mesh); |
| 530 | #endif |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 531 | kfree(sta); |
| 532 | return NULL; |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 533 | } |
| 534 | |
Guy Eilam | 8c71df7 | 2011-08-17 15:18:14 +0300 | [diff] [blame] | 535 | static int sta_info_insert_check(struct sta_info *sta) |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 536 | { |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 537 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 538 | |
Johannes Berg | 03e4497 | 2008-02-27 09:56:40 +0100 | [diff] [blame] | 539 | /* |
| 540 | * Can't be a WARN_ON because it can be triggered through a race: |
| 541 | * something inserts a STA (on one CPU) without holding the RTNL |
| 542 | * and another CPU turns off the net device. |
| 543 | */ |
Guy Eilam | 8c71df7 | 2011-08-17 15:18:14 +0300 | [diff] [blame] | 544 | if (unlikely(!ieee80211_sdata_running(sdata))) |
| 545 | return -ENETDOWN; |
Johannes Berg | 03e4497 | 2008-02-27 09:56:40 +0100 | [diff] [blame] | 546 | |
Joe Perches | b203ca3 | 2012-05-08 18:56:52 +0000 | [diff] [blame] | 547 | if (WARN_ON(ether_addr_equal(sta->sta.addr, sdata->vif.addr) || |
Guy Eilam | 8c71df7 | 2011-08-17 15:18:14 +0300 | [diff] [blame] | 548 | is_multicast_ether_addr(sta->sta.addr))) |
| 549 | return -EINVAL; |
| 550 | |
Herbert Xu | 83e7e4c | 2016-09-19 19:00:10 +0800 | [diff] [blame] | 551 | /* The RCU read lock is required by rhashtable due to |
| 552 | * asynchronous resize/rehash. We also require the mutex |
| 553 | * for correctness. |
Johannes Berg | 3110489 | 2015-10-22 17:35:19 +0200 | [diff] [blame] | 554 | */ |
| 555 | rcu_read_lock(); |
| 556 | lockdep_assert_held(&sdata->local->sta_mtx); |
| 557 | if (ieee80211_hw_check(&sdata->local->hw, NEEDS_UNIQUE_STA_ADDR) && |
| 558 | ieee80211_find_sta_by_ifaddr(&sdata->local->hw, sta->addr, NULL)) { |
| 559 | rcu_read_unlock(); |
| 560 | return -ENOTUNIQ; |
| 561 | } |
| 562 | rcu_read_unlock(); |
| 563 | |
Guy Eilam | 8c71df7 | 2011-08-17 15:18:14 +0300 | [diff] [blame] | 564 | return 0; |
| 565 | } |
| 566 | |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 567 | static int sta_info_insert_drv_state(struct ieee80211_local *local, |
| 568 | struct ieee80211_sub_if_data *sdata, |
| 569 | struct sta_info *sta) |
| 570 | { |
| 571 | enum ieee80211_sta_state state; |
| 572 | int err = 0; |
| 573 | |
| 574 | for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; state++) { |
| 575 | err = drv_sta_state(local, sdata, sta, state, state + 1); |
| 576 | if (err) |
| 577 | break; |
| 578 | } |
| 579 | |
| 580 | if (!err) { |
Johannes Berg | a4ec45a | 2012-01-20 13:55:22 +0100 | [diff] [blame] | 581 | /* |
| 582 | * Drivers using legacy sta_add/sta_remove callbacks only |
| 583 | * get uploaded set to true after sta_add is called. |
| 584 | */ |
| 585 | if (!local->ops->sta_add) |
| 586 | sta->uploaded = true; |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 587 | return 0; |
| 588 | } |
| 589 | |
| 590 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 591 | sdata_info(sdata, |
| 592 | "failed to move IBSS STA %pM to state %d (%d) - keeping it anyway\n", |
| 593 | sta->sta.addr, state + 1, err); |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 594 | err = 0; |
| 595 | } |
| 596 | |
| 597 | /* unwind on error */ |
| 598 | for (; state > IEEE80211_STA_NOTEXIST; state--) |
| 599 | WARN_ON(drv_sta_state(local, sdata, sta, state, state - 1)); |
| 600 | |
| 601 | return err; |
| 602 | } |
| 603 | |
Gregory Greenman | d405fd8 | 2017-08-05 11:44:36 +0300 | [diff] [blame] | 604 | static void |
| 605 | ieee80211_recalc_p2p_go_ps_allowed(struct ieee80211_sub_if_data *sdata) |
| 606 | { |
| 607 | struct ieee80211_local *local = sdata->local; |
| 608 | bool allow_p2p_go_ps = sdata->vif.p2p; |
| 609 | struct sta_info *sta; |
| 610 | |
| 611 | rcu_read_lock(); |
| 612 | list_for_each_entry_rcu(sta, &local->sta_list, list) { |
| 613 | if (sdata != sta->sdata || |
| 614 | !test_sta_flag(sta, WLAN_STA_ASSOC)) |
| 615 | continue; |
| 616 | if (!sta->sta.support_p2p_ps) { |
| 617 | allow_p2p_go_ps = false; |
| 618 | break; |
| 619 | } |
| 620 | } |
| 621 | rcu_read_unlock(); |
| 622 | |
| 623 | if (allow_p2p_go_ps != sdata->vif.bss_conf.allow_p2p_go_ps) { |
| 624 | sdata->vif.bss_conf.allow_p2p_go_ps = allow_p2p_go_ps; |
| 625 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_P2P_PS); |
| 626 | } |
| 627 | } |
| 628 | |
Guy Eilam | 8c71df7 | 2011-08-17 15:18:14 +0300 | [diff] [blame] | 629 | /* |
| 630 | * should be called with sta_mtx locked |
| 631 | * this function replaces the mutex lock |
| 632 | * with a RCU lock |
| 633 | */ |
Johannes Berg | 4d33960 | 2011-12-15 11:24:20 +0100 | [diff] [blame] | 634 | static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU) |
Guy Eilam | 8c71df7 | 2011-08-17 15:18:14 +0300 | [diff] [blame] | 635 | { |
| 636 | struct ieee80211_local *local = sta->local; |
| 637 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
Koen Vandeputte | 0c2e384 | 2016-12-14 17:28:59 +0100 | [diff] [blame] | 638 | struct station_info *sinfo = NULL; |
Guy Eilam | 8c71df7 | 2011-08-17 15:18:14 +0300 | [diff] [blame] | 639 | int err = 0; |
| 640 | |
| 641 | lockdep_assert_held(&local->sta_mtx); |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 642 | |
Johannes Berg | 7852e36 | 2012-01-20 13:55:24 +0100 | [diff] [blame] | 643 | /* check if STA exists already */ |
| 644 | if (sta_info_get_bss(sdata, sta->sta.addr)) { |
| 645 | err = -EEXIST; |
| 646 | goto out_err; |
Johannes Berg | 43ba7e9 | 2008-02-21 14:09:30 +0100 | [diff] [blame] | 647 | } |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 648 | |
Koen Vandeputte | 0c2e384 | 2016-12-14 17:28:59 +0100 | [diff] [blame] | 649 | sinfo = kzalloc(sizeof(struct station_info), GFP_KERNEL); |
| 650 | if (!sinfo) { |
| 651 | err = -ENOMEM; |
| 652 | goto out_err; |
| 653 | } |
| 654 | |
Johannes Berg | 7852e36 | 2012-01-20 13:55:24 +0100 | [diff] [blame] | 655 | local->num_sta++; |
| 656 | local->sta_generation++; |
| 657 | smp_mb(); |
Johannes Berg | 4d33960 | 2011-12-15 11:24:20 +0100 | [diff] [blame] | 658 | |
Johannes Berg | 5108ca8 | 2014-02-17 20:49:03 +0100 | [diff] [blame] | 659 | /* simplify things and don't accept BA sessions yet */ |
| 660 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
| 661 | |
Johannes Berg | 7852e36 | 2012-01-20 13:55:24 +0100 | [diff] [blame] | 662 | /* make the station visible */ |
Johannes Berg | 62b14b2 | 2016-03-31 17:22:45 +0200 | [diff] [blame] | 663 | err = sta_info_hash_add(local, sta); |
| 664 | if (err) |
| 665 | goto out_drop_sta; |
Johannes Berg | 4d33960 | 2011-12-15 11:24:20 +0100 | [diff] [blame] | 666 | |
Arik Nemtsov | 2bad7748 | 2014-10-22 12:32:16 +0300 | [diff] [blame] | 667 | list_add_tail_rcu(&sta->list, &local->sta_list); |
Johannes Berg | 83d5cc0 | 2012-01-12 09:31:10 +0100 | [diff] [blame] | 668 | |
Johannes Berg | 5108ca8 | 2014-02-17 20:49:03 +0100 | [diff] [blame] | 669 | /* notify driver */ |
| 670 | err = sta_info_insert_drv_state(local, sdata, sta); |
| 671 | if (err) |
| 672 | goto out_remove; |
| 673 | |
Johannes Berg | 7852e36 | 2012-01-20 13:55:24 +0100 | [diff] [blame] | 674 | set_sta_flag(sta, WLAN_STA_INSERTED); |
Gregory Greenman | d405fd8 | 2017-08-05 11:44:36 +0300 | [diff] [blame] | 675 | |
| 676 | if (sta->sta_state >= IEEE80211_STA_ASSOC) { |
| 677 | ieee80211_recalc_min_chandef(sta->sdata); |
| 678 | if (!sta->sta.support_p2p_ps) |
| 679 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); |
| 680 | } |
| 681 | |
Johannes Berg | 5108ca8 | 2014-02-17 20:49:03 +0100 | [diff] [blame] | 682 | /* accept BA sessions now */ |
| 683 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
Johannes Berg | 4d33960 | 2011-12-15 11:24:20 +0100 | [diff] [blame] | 684 | |
Johannes Berg | 7852e36 | 2012-01-20 13:55:24 +0100 | [diff] [blame] | 685 | ieee80211_sta_debugfs_add(sta); |
| 686 | rate_control_add_sta_debugfs(sta); |
Johannes Berg | 4d33960 | 2011-12-15 11:24:20 +0100 | [diff] [blame] | 687 | |
Arnd Bergmann | 0ef049d | 2016-01-26 23:05:31 +0100 | [diff] [blame] | 688 | sinfo->generation = local->sta_generation; |
| 689 | cfg80211_new_sta(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); |
| 690 | kfree(sinfo); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 691 | |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 692 | sta_dbg(sdata, "Inserted STA %pM\n", sta->sta.addr); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 693 | |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 694 | /* move reference to rcu-protected */ |
| 695 | rcu_read_lock(); |
| 696 | mutex_unlock(&local->sta_mtx); |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 697 | |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 698 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
| 699 | mesh_accept_plinks_update(sdata); |
| 700 | |
| 701 | return 0; |
Johannes Berg | 5108ca8 | 2014-02-17 20:49:03 +0100 | [diff] [blame] | 702 | out_remove: |
| 703 | sta_info_hash_del(local, sta); |
| 704 | list_del_rcu(&sta->list); |
Johannes Berg | 62b14b2 | 2016-03-31 17:22:45 +0200 | [diff] [blame] | 705 | out_drop_sta: |
Johannes Berg | 5108ca8 | 2014-02-17 20:49:03 +0100 | [diff] [blame] | 706 | local->num_sta--; |
| 707 | synchronize_net(); |
Johannes Berg | 7bc40ae | 2020-11-12 11:22:04 +0100 | [diff] [blame] | 708 | cleanup_single_sta(sta); |
Johannes Berg | 4d33960 | 2011-12-15 11:24:20 +0100 | [diff] [blame] | 709 | out_err: |
| 710 | mutex_unlock(&local->sta_mtx); |
Sudip Mukherjee | ea32f06 | 2016-02-02 13:21:14 +0530 | [diff] [blame] | 711 | kfree(sinfo); |
Johannes Berg | 4d33960 | 2011-12-15 11:24:20 +0100 | [diff] [blame] | 712 | rcu_read_lock(); |
| 713 | return err; |
Guy Eilam | 8c71df7 | 2011-08-17 15:18:14 +0300 | [diff] [blame] | 714 | } |
| 715 | |
| 716 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU) |
| 717 | { |
| 718 | struct ieee80211_local *local = sta->local; |
Zhao, Gang | 308f7fc | 2014-04-21 12:53:00 +0800 | [diff] [blame] | 719 | int err; |
Guy Eilam | 8c71df7 | 2011-08-17 15:18:14 +0300 | [diff] [blame] | 720 | |
Johannes Berg | 4d33960 | 2011-12-15 11:24:20 +0100 | [diff] [blame] | 721 | might_sleep(); |
| 722 | |
Johannes Berg | 3110489 | 2015-10-22 17:35:19 +0200 | [diff] [blame] | 723 | mutex_lock(&local->sta_mtx); |
| 724 | |
Guy Eilam | 8c71df7 | 2011-08-17 15:18:14 +0300 | [diff] [blame] | 725 | err = sta_info_insert_check(sta); |
| 726 | if (err) { |
Johannes Berg | 7bc40ae | 2020-11-12 11:22:04 +0100 | [diff] [blame] | 727 | sta_info_free(local, sta); |
Johannes Berg | 3110489 | 2015-10-22 17:35:19 +0200 | [diff] [blame] | 728 | mutex_unlock(&local->sta_mtx); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 729 | rcu_read_lock(); |
Johannes Berg | 7bc40ae | 2020-11-12 11:22:04 +0100 | [diff] [blame] | 730 | return err; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 731 | } |
| 732 | |
Johannes Berg | 7bc40ae | 2020-11-12 11:22:04 +0100 | [diff] [blame] | 733 | return sta_info_insert_finish(sta); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 734 | } |
| 735 | |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 736 | int sta_info_insert(struct sta_info *sta) |
| 737 | { |
| 738 | int err = sta_info_insert_rcu(sta); |
| 739 | |
| 740 | rcu_read_unlock(); |
| 741 | |
| 742 | return err; |
| 743 | } |
| 744 | |
Marco Porsch | d012a60 | 2012-10-10 12:39:50 -0700 | [diff] [blame] | 745 | static inline void __bss_tim_set(u8 *tim, u16 id) |
Johannes Berg | 004c872 | 2008-02-20 11:21:35 +0100 | [diff] [blame] | 746 | { |
| 747 | /* |
| 748 | * This format has been mandated by the IEEE specifications, |
| 749 | * so this line may not be changed to use the __set_bit() format. |
| 750 | */ |
Marco Porsch | d012a60 | 2012-10-10 12:39:50 -0700 | [diff] [blame] | 751 | tim[id / 8] |= (1 << (id % 8)); |
Johannes Berg | 004c872 | 2008-02-20 11:21:35 +0100 | [diff] [blame] | 752 | } |
| 753 | |
Marco Porsch | d012a60 | 2012-10-10 12:39:50 -0700 | [diff] [blame] | 754 | static inline void __bss_tim_clear(u8 *tim, u16 id) |
Johannes Berg | 004c872 | 2008-02-20 11:21:35 +0100 | [diff] [blame] | 755 | { |
| 756 | /* |
| 757 | * This format has been mandated by the IEEE specifications, |
| 758 | * so this line may not be changed to use the __clear_bit() format. |
| 759 | */ |
Marco Porsch | d012a60 | 2012-10-10 12:39:50 -0700 | [diff] [blame] | 760 | tim[id / 8] &= ~(1 << (id % 8)); |
Johannes Berg | 004c872 | 2008-02-20 11:21:35 +0100 | [diff] [blame] | 761 | } |
| 762 | |
Ilan Peer | 3d5839b | 2013-03-05 15:27:20 +0200 | [diff] [blame] | 763 | static inline bool __bss_tim_get(u8 *tim, u16 id) |
| 764 | { |
| 765 | /* |
| 766 | * This format has been mandated by the IEEE specifications, |
| 767 | * so this line may not be changed to use the test_bit() format. |
| 768 | */ |
| 769 | return tim[id / 8] & (1 << (id % 8)); |
| 770 | } |
| 771 | |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 772 | static unsigned long ieee80211_tids_for_ac(int ac) |
Johannes Berg | 004c872 | 2008-02-20 11:21:35 +0100 | [diff] [blame] | 773 | { |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 774 | /* If we ever support TIDs > 7, this obviously needs to be adjusted */ |
| 775 | switch (ac) { |
| 776 | case IEEE80211_AC_VO: |
| 777 | return BIT(6) | BIT(7); |
| 778 | case IEEE80211_AC_VI: |
| 779 | return BIT(4) | BIT(5); |
| 780 | case IEEE80211_AC_BE: |
| 781 | return BIT(0) | BIT(3); |
| 782 | case IEEE80211_AC_BK: |
| 783 | return BIT(1) | BIT(2); |
| 784 | default: |
| 785 | WARN_ON(1); |
| 786 | return 0; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 787 | } |
Johannes Berg | 004c872 | 2008-02-20 11:21:35 +0100 | [diff] [blame] | 788 | } |
| 789 | |
Johannes Berg | 9b7a86f | 2015-01-09 11:40:39 +0100 | [diff] [blame] | 790 | static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending) |
Johannes Berg | 004c872 | 2008-02-20 11:21:35 +0100 | [diff] [blame] | 791 | { |
Johannes Berg | c868cb35 | 2011-09-29 16:04:27 +0200 | [diff] [blame] | 792 | struct ieee80211_local *local = sta->local; |
Marco Porsch | d012a60 | 2012-10-10 12:39:50 -0700 | [diff] [blame] | 793 | struct ps_data *ps; |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 794 | bool indicate_tim = false; |
| 795 | u8 ignore_for_tim = sta->sta.uapsd_queues; |
| 796 | int ac; |
Bob Copeland | a69bd8e | 2015-07-14 08:31:58 -0400 | [diff] [blame] | 797 | u16 id = sta->sta.aid; |
Johannes Berg | 004c872 | 2008-02-20 11:21:35 +0100 | [diff] [blame] | 798 | |
Marco Porsch | d012a60 | 2012-10-10 12:39:50 -0700 | [diff] [blame] | 799 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
| 800 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
| 801 | if (WARN_ON_ONCE(!sta->sdata->bss)) |
| 802 | return; |
| 803 | |
| 804 | ps = &sta->sdata->bss->ps; |
Marco Porsch | 3f52b7e | 2013-01-30 18:14:08 +0100 | [diff] [blame] | 805 | #ifdef CONFIG_MAC80211_MESH |
| 806 | } else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) { |
| 807 | ps = &sta->sdata->u.mesh.ps; |
Marco Porsch | 3f52b7e | 2013-01-30 18:14:08 +0100 | [diff] [blame] | 808 | #endif |
Marco Porsch | d012a60 | 2012-10-10 12:39:50 -0700 | [diff] [blame] | 809 | } else { |
Johannes Berg | c868cb35 | 2011-09-29 16:04:27 +0200 | [diff] [blame] | 810 | return; |
Marco Porsch | d012a60 | 2012-10-10 12:39:50 -0700 | [diff] [blame] | 811 | } |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 812 | |
Johannes Berg | c868cb35 | 2011-09-29 16:04:27 +0200 | [diff] [blame] | 813 | /* No need to do anything if the driver does all */ |
Emmanuel Grumbach | d98937f | 2017-02-20 14:24:36 +0100 | [diff] [blame] | 814 | if (ieee80211_hw_check(&local->hw, AP_LINK_PS) && !local->ops->set_tim) |
Johannes Berg | c868cb35 | 2011-09-29 16:04:27 +0200 | [diff] [blame] | 815 | return; |
Johannes Berg | 004c872 | 2008-02-20 11:21:35 +0100 | [diff] [blame] | 816 | |
Johannes Berg | c868cb35 | 2011-09-29 16:04:27 +0200 | [diff] [blame] | 817 | if (sta->dead) |
| 818 | goto done; |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 819 | |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 820 | /* |
| 821 | * If all ACs are delivery-enabled then we should build |
| 822 | * the TIM bit for all ACs anyway; if only some are then |
| 823 | * we ignore those and build the TIM bit using only the |
| 824 | * non-enabled ones. |
| 825 | */ |
| 826 | if (ignore_for_tim == BIT(IEEE80211_NUM_ACS) - 1) |
| 827 | ignore_for_tim = 0; |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 828 | |
Johannes Berg | 9b7a86f | 2015-01-09 11:40:39 +0100 | [diff] [blame] | 829 | if (ignore_pending) |
| 830 | ignore_for_tim = BIT(IEEE80211_NUM_ACS) - 1; |
| 831 | |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 832 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
| 833 | unsigned long tids; |
| 834 | |
Emmanuel Grumbach | f438ceb | 2016-10-18 23:12:12 +0300 | [diff] [blame] | 835 | if (ignore_for_tim & ieee80211_ac_to_qos_mask[ac]) |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 836 | continue; |
| 837 | |
| 838 | indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) || |
| 839 | !skb_queue_empty(&sta->ps_tx_buf[ac]); |
| 840 | if (indicate_tim) |
| 841 | break; |
| 842 | |
| 843 | tids = ieee80211_tids_for_ac(ac); |
| 844 | |
| 845 | indicate_tim |= |
| 846 | sta->driver_buffered_tids & tids; |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 847 | indicate_tim |= |
| 848 | sta->txq_buffered_tids & tids; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 849 | } |
Johannes Berg | 004c872 | 2008-02-20 11:21:35 +0100 | [diff] [blame] | 850 | |
Johannes Berg | c868cb35 | 2011-09-29 16:04:27 +0200 | [diff] [blame] | 851 | done: |
Johannes Berg | 65f704a | 2013-02-13 17:39:53 +0100 | [diff] [blame] | 852 | spin_lock_bh(&local->tim_lock); |
Johannes Berg | 004c872 | 2008-02-20 11:21:35 +0100 | [diff] [blame] | 853 | |
Ilan Peer | 3d5839b | 2013-03-05 15:27:20 +0200 | [diff] [blame] | 854 | if (indicate_tim == __bss_tim_get(ps->tim, id)) |
| 855 | goto out_unlock; |
| 856 | |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 857 | if (indicate_tim) |
Marco Porsch | d012a60 | 2012-10-10 12:39:50 -0700 | [diff] [blame] | 858 | __bss_tim_set(ps->tim, id); |
Johannes Berg | c868cb35 | 2011-09-29 16:04:27 +0200 | [diff] [blame] | 859 | else |
Marco Porsch | d012a60 | 2012-10-10 12:39:50 -0700 | [diff] [blame] | 860 | __bss_tim_clear(ps->tim, id); |
Johannes Berg | 3e122be | 2008-07-09 14:40:34 +0200 | [diff] [blame] | 861 | |
Johannes Berg | 9b7a86f | 2015-01-09 11:40:39 +0100 | [diff] [blame] | 862 | if (local->ops->set_tim && !WARN_ON(sta->dead)) { |
Johannes Berg | c868cb35 | 2011-09-29 16:04:27 +0200 | [diff] [blame] | 863 | local->tim_in_locked_section = true; |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 864 | drv_set_tim(local, &sta->sta, indicate_tim); |
Johannes Berg | c868cb35 | 2011-09-29 16:04:27 +0200 | [diff] [blame] | 865 | local->tim_in_locked_section = false; |
Johannes Berg | 004c872 | 2008-02-20 11:21:35 +0100 | [diff] [blame] | 866 | } |
Johannes Berg | 004c872 | 2008-02-20 11:21:35 +0100 | [diff] [blame] | 867 | |
Ilan Peer | 3d5839b | 2013-03-05 15:27:20 +0200 | [diff] [blame] | 868 | out_unlock: |
Johannes Berg | 65f704a | 2013-02-13 17:39:53 +0100 | [diff] [blame] | 869 | spin_unlock_bh(&local->tim_lock); |
Johannes Berg | 004c872 | 2008-02-20 11:21:35 +0100 | [diff] [blame] | 870 | } |
| 871 | |
Johannes Berg | 9b7a86f | 2015-01-09 11:40:39 +0100 | [diff] [blame] | 872 | void sta_info_recalc_tim(struct sta_info *sta) |
| 873 | { |
| 874 | __sta_info_recalc_tim(sta, false); |
| 875 | } |
| 876 | |
Johannes Berg | cd0b8d8 | 2011-09-06 14:13:06 +0200 | [diff] [blame] | 877 | static bool sta_info_buffer_expired(struct sta_info *sta, struct sk_buff *skb) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 878 | { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 879 | struct ieee80211_tx_info *info; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 880 | int timeout; |
| 881 | |
| 882 | if (!skb) |
Johannes Berg | cd0b8d8 | 2011-09-06 14:13:06 +0200 | [diff] [blame] | 883 | return false; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 884 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 885 | info = IEEE80211_SKB_CB(skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 886 | |
| 887 | /* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */ |
Johannes Berg | 57c4d7b | 2009-04-23 16:10:04 +0200 | [diff] [blame] | 888 | timeout = (sta->listen_interval * |
| 889 | sta->sdata->vif.bss_conf.beacon_int * |
| 890 | 32 / 15625) * HZ; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 891 | if (timeout < STA_TX_BUFFER_EXPIRE) |
| 892 | timeout = STA_TX_BUFFER_EXPIRE; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 893 | return time_after(jiffies, info->control.jiffies + timeout); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 894 | } |
| 895 | |
| 896 | |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 897 | static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local, |
| 898 | struct sta_info *sta, int ac) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 899 | { |
| 900 | unsigned long flags; |
| 901 | struct sk_buff *skb; |
| 902 | |
Johannes Berg | 6075039 | 2011-09-29 16:04:28 +0200 | [diff] [blame] | 903 | /* |
| 904 | * First check for frames that should expire on the filtered |
| 905 | * queue. Frames here were rejected by the driver and are on |
| 906 | * a separate queue to avoid reordering with normal PS-buffered |
| 907 | * frames. They also aren't accounted for right now in the |
| 908 | * total_ps_buffered counter. |
| 909 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 910 | for (;;) { |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 911 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
| 912 | skb = skb_peek(&sta->tx_filtered[ac]); |
Johannes Berg | 57c4d7b | 2009-04-23 16:10:04 +0200 | [diff] [blame] | 913 | if (sta_info_buffer_expired(sta, skb)) |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 914 | skb = __skb_dequeue(&sta->tx_filtered[ac]); |
Johannes Berg | 836341a | 2008-02-20 02:07:21 +0100 | [diff] [blame] | 915 | else |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 916 | skb = NULL; |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 917 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 918 | |
Johannes Berg | 6075039 | 2011-09-29 16:04:28 +0200 | [diff] [blame] | 919 | /* |
| 920 | * Frames are queued in order, so if this one |
| 921 | * hasn't expired yet we can stop testing. If |
| 922 | * we actually reached the end of the queue we |
| 923 | * also need to stop, of course. |
| 924 | */ |
| 925 | if (!skb) |
| 926 | break; |
Felix Fietkau | d4fa14c | 2012-10-10 22:40:23 +0200 | [diff] [blame] | 927 | ieee80211_free_txskb(&local->hw, skb); |
Johannes Berg | 6075039 | 2011-09-29 16:04:28 +0200 | [diff] [blame] | 928 | } |
| 929 | |
| 930 | /* |
| 931 | * Now also check the normal PS-buffered queue, this will |
| 932 | * only find something if the filtered queue was emptied |
| 933 | * since the filtered frames are all before the normal PS |
| 934 | * buffered frames. |
| 935 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 936 | for (;;) { |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 937 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
| 938 | skb = skb_peek(&sta->ps_tx_buf[ac]); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 939 | if (sta_info_buffer_expired(sta, skb)) |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 940 | skb = __skb_dequeue(&sta->ps_tx_buf[ac]); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 941 | else |
| 942 | skb = NULL; |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 943 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 944 | |
Johannes Berg | 6075039 | 2011-09-29 16:04:28 +0200 | [diff] [blame] | 945 | /* |
| 946 | * frames are queued in order, so if this one |
| 947 | * hasn't expired yet (or we reached the end of |
| 948 | * the queue) we can stop testing |
| 949 | */ |
Johannes Berg | 836341a | 2008-02-20 02:07:21 +0100 | [diff] [blame] | 950 | if (!skb) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 951 | break; |
Johannes Berg | 836341a | 2008-02-20 02:07:21 +0100 | [diff] [blame] | 952 | |
Johannes Berg | 836341a | 2008-02-20 02:07:21 +0100 | [diff] [blame] | 953 | local->total_ps_buffered--; |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 954 | ps_dbg(sta->sdata, "Buffered frame expired (STA %pM)\n", |
| 955 | sta->sta.addr); |
Felix Fietkau | d4fa14c | 2012-10-10 22:40:23 +0200 | [diff] [blame] | 956 | ieee80211_free_txskb(&local->hw, skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 957 | } |
Juuso Oikarinen | 3393a60 | 2010-04-19 10:12:52 +0300 | [diff] [blame] | 958 | |
Johannes Berg | 6075039 | 2011-09-29 16:04:28 +0200 | [diff] [blame] | 959 | /* |
| 960 | * Finally, recalculate the TIM bit for this station -- it might |
| 961 | * now be clear because the station was too slow to retrieve its |
| 962 | * frames. |
| 963 | */ |
| 964 | sta_info_recalc_tim(sta); |
| 965 | |
| 966 | /* |
| 967 | * Return whether there are any frames still buffered, this is |
| 968 | * used to check whether the cleanup timer still needs to run, |
| 969 | * if there are no frames we don't need to rearm the timer. |
| 970 | */ |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 971 | return !(skb_queue_empty(&sta->ps_tx_buf[ac]) && |
| 972 | skb_queue_empty(&sta->tx_filtered[ac])); |
| 973 | } |
| 974 | |
| 975 | static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local, |
| 976 | struct sta_info *sta) |
| 977 | { |
| 978 | bool have_buffered = false; |
| 979 | int ac; |
| 980 | |
Marco Porsch | 3f52b7e | 2013-01-30 18:14:08 +0100 | [diff] [blame] | 981 | /* This is only necessary for stations on BSS/MBSS interfaces */ |
| 982 | if (!sta->sdata->bss && |
| 983 | !ieee80211_vif_is_mesh(&sta->sdata->vif)) |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 984 | return false; |
| 985 | |
| 986 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) |
| 987 | have_buffered |= |
| 988 | sta_info_cleanup_expire_buffered_ac(local, sta, ac); |
| 989 | |
| 990 | return have_buffered; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 991 | } |
| 992 | |
Johannes Berg | d778207 | 2013-12-04 23:12:31 +0100 | [diff] [blame] | 993 | static int __must_check __sta_info_destroy_part1(struct sta_info *sta) |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 994 | { |
| 995 | struct ieee80211_local *local; |
| 996 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | 6d10e46 | 2013-03-06 23:09:11 +0100 | [diff] [blame] | 997 | int ret; |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 998 | |
| 999 | might_sleep(); |
| 1000 | |
| 1001 | if (!sta) |
| 1002 | return -ENOENT; |
| 1003 | |
| 1004 | local = sta->local; |
| 1005 | sdata = sta->sdata; |
| 1006 | |
Johannes Berg | 83d5cc0 | 2012-01-12 09:31:10 +0100 | [diff] [blame] | 1007 | lockdep_assert_held(&local->sta_mtx); |
| 1008 | |
Johannes Berg | 098a607 | 2010-04-06 11:18:47 +0200 | [diff] [blame] | 1009 | /* |
| 1010 | * Before removing the station from the driver and |
| 1011 | * rate control, it might still start new aggregation |
| 1012 | * sessions -- block that to make sure the tear-down |
| 1013 | * will be sufficient. |
| 1014 | */ |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 1015 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
Johannes Berg | c82c4a8 | 2012-07-18 13:31:31 +0200 | [diff] [blame] | 1016 | ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA); |
Johannes Berg | 098a607 | 2010-04-06 11:18:47 +0200 | [diff] [blame] | 1017 | |
Sara Sharon | f59374e | 2016-03-02 23:46:14 +0200 | [diff] [blame] | 1018 | /* |
| 1019 | * Before removing the station from the driver there might be pending |
| 1020 | * rx frames on RSS queues sent prior to the disassociation - wait for |
| 1021 | * all such frames to be processed. |
| 1022 | */ |
| 1023 | drv_sync_rx_queues(local, sta); |
| 1024 | |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1025 | ret = sta_info_hash_del(local, sta); |
Johannes Berg | b01711b | 2013-12-04 20:25:27 +0100 | [diff] [blame] | 1026 | if (WARN_ON(ret)) |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1027 | return ret; |
| 1028 | |
Arik Nemtsov | a7a6bdd | 2014-11-09 18:50:19 +0200 | [diff] [blame] | 1029 | /* |
| 1030 | * for TDLS peers, make sure to return to the base channel before |
| 1031 | * removal. |
| 1032 | */ |
| 1033 | if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) { |
| 1034 | drv_tdls_cancel_channel_switch(local, sdata, &sta->sta); |
| 1035 | clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL); |
| 1036 | } |
| 1037 | |
Arik Nemtsov | 794454c | 2012-06-03 23:32:32 +0300 | [diff] [blame] | 1038 | list_del_rcu(&sta->list); |
Eliad Peller | ef04476 | 2015-11-17 10:24:37 +0200 | [diff] [blame] | 1039 | sta->removed = true; |
Johannes Berg | 4d33960 | 2011-12-15 11:24:20 +0100 | [diff] [blame] | 1040 | |
Johannes Berg | 6a9d1b9 | 2013-12-04 22:39:17 +0100 | [diff] [blame] | 1041 | drv_sta_pre_rcu_remove(local, sta->sdata, sta); |
| 1042 | |
Johannes Berg | a710c81 | 2013-12-04 20:11:06 +0100 | [diff] [blame] | 1043 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && |
| 1044 | rcu_access_pointer(sdata->u.vlan.sta) == sta) |
| 1045 | RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); |
| 1046 | |
Johannes Berg | d778207 | 2013-12-04 23:12:31 +0100 | [diff] [blame] | 1047 | return 0; |
| 1048 | } |
| 1049 | |
| 1050 | static void __sta_info_destroy_part2(struct sta_info *sta) |
| 1051 | { |
| 1052 | struct ieee80211_local *local = sta->local; |
| 1053 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
Arnd Bergmann | 0ef049d | 2016-01-26 23:05:31 +0100 | [diff] [blame] | 1054 | struct station_info *sinfo; |
Johannes Berg | d778207 | 2013-12-04 23:12:31 +0100 | [diff] [blame] | 1055 | int ret; |
| 1056 | |
| 1057 | /* |
| 1058 | * NOTE: This assumes at least synchronize_net() was done |
| 1059 | * after _part1 and before _part2! |
| 1060 | */ |
| 1061 | |
| 1062 | might_sleep(); |
| 1063 | lockdep_assert_held(&local->sta_mtx); |
| 1064 | |
Johannes Berg | 5981fe5 | 2020-08-03 11:02:10 +0200 | [diff] [blame] | 1065 | if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
Johannes Berg | b16798f | 2020-03-26 15:51:35 +0100 | [diff] [blame] | 1066 | ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); |
| 1067 | WARN_ON_ONCE(ret); |
| 1068 | } |
| 1069 | |
Johannes Berg | c878207 | 2013-12-04 23:05:45 +0100 | [diff] [blame] | 1070 | /* now keys can no longer be reached */ |
Johannes Berg | 6d10e46 | 2013-03-06 23:09:11 +0100 | [diff] [blame] | 1071 | ieee80211_free_sta_keys(local, sta); |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1072 | |
Johannes Berg | 9b7a86f | 2015-01-09 11:40:39 +0100 | [diff] [blame] | 1073 | /* disable TIM bit - last chance to tell driver */ |
| 1074 | __sta_info_recalc_tim(sta, true); |
| 1075 | |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1076 | sta->dead = true; |
| 1077 | |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1078 | local->num_sta--; |
| 1079 | local->sta_generation++; |
| 1080 | |
Johannes Berg | 83d5cc0 | 2012-01-12 09:31:10 +0100 | [diff] [blame] | 1081 | while (sta->sta_state > IEEE80211_STA_NONE) { |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 1082 | ret = sta_info_move_state(sta, sta->sta_state - 1); |
| 1083 | if (ret) { |
Johannes Berg | 83d5cc0 | 2012-01-12 09:31:10 +0100 | [diff] [blame] | 1084 | WARN_ON_ONCE(1); |
| 1085 | break; |
| 1086 | } |
| 1087 | } |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 1088 | |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 1089 | if (sta->uploaded) { |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 1090 | ret = drv_sta_state(local, sdata, sta, IEEE80211_STA_NONE, |
| 1091 | IEEE80211_STA_NOTEXIST); |
| 1092 | WARN_ON_ONCE(ret != 0); |
| 1093 | } |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1094 | |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 1095 | sta_dbg(sdata, "Removed STA %pM\n", sta->sta.addr); |
| 1096 | |
Arnd Bergmann | 0ef049d | 2016-01-26 23:05:31 +0100 | [diff] [blame] | 1097 | sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL); |
| 1098 | if (sinfo) |
Johannes Berg | 0fdf149 | 2018-05-18 11:40:44 +0200 | [diff] [blame] | 1099 | sta_set_sinfo(sta, sinfo, true); |
Arnd Bergmann | 0ef049d | 2016-01-26 23:05:31 +0100 | [diff] [blame] | 1100 | cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); |
| 1101 | kfree(sinfo); |
Jouni Malinen | ec15e68 | 2011-03-23 15:29:52 +0200 | [diff] [blame] | 1102 | |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1103 | ieee80211_sta_debugfs_remove(sta); |
| 1104 | |
Johannes Berg | d34ba21 | 2013-12-04 22:46:11 +0100 | [diff] [blame] | 1105 | cleanup_single_sta(sta); |
Johannes Berg | d778207 | 2013-12-04 23:12:31 +0100 | [diff] [blame] | 1106 | } |
| 1107 | |
| 1108 | int __must_check __sta_info_destroy(struct sta_info *sta) |
| 1109 | { |
| 1110 | int err = __sta_info_destroy_part1(sta); |
| 1111 | |
| 1112 | if (err) |
| 1113 | return err; |
| 1114 | |
| 1115 | synchronize_net(); |
| 1116 | |
| 1117 | __sta_info_destroy_part2(sta); |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1118 | |
| 1119 | return 0; |
| 1120 | } |
| 1121 | |
| 1122 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr) |
| 1123 | { |
| 1124 | struct sta_info *sta; |
| 1125 | int ret; |
| 1126 | |
| 1127 | mutex_lock(&sdata->local->sta_mtx); |
Johannes Berg | 7852e36 | 2012-01-20 13:55:24 +0100 | [diff] [blame] | 1128 | sta = sta_info_get(sdata, addr); |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1129 | ret = __sta_info_destroy(sta); |
| 1130 | mutex_unlock(&sdata->local->sta_mtx); |
| 1131 | |
| 1132 | return ret; |
| 1133 | } |
| 1134 | |
| 1135 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
| 1136 | const u8 *addr) |
| 1137 | { |
| 1138 | struct sta_info *sta; |
| 1139 | int ret; |
| 1140 | |
| 1141 | mutex_lock(&sdata->local->sta_mtx); |
Johannes Berg | 7852e36 | 2012-01-20 13:55:24 +0100 | [diff] [blame] | 1142 | sta = sta_info_get_bss(sdata, addr); |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1143 | ret = __sta_info_destroy(sta); |
| 1144 | mutex_unlock(&sdata->local->sta_mtx); |
| 1145 | |
| 1146 | return ret; |
| 1147 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1148 | |
Kees Cook | 34f11cd | 2017-10-16 16:35:49 -0700 | [diff] [blame] | 1149 | static void sta_info_cleanup(struct timer_list *t) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1150 | { |
Kees Cook | 34f11cd | 2017-10-16 16:35:49 -0700 | [diff] [blame] | 1151 | struct ieee80211_local *local = from_timer(local, t, sta_cleanup); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1152 | struct sta_info *sta; |
Juuso Oikarinen | 3393a60 | 2010-04-19 10:12:52 +0300 | [diff] [blame] | 1153 | bool timer_needed = false; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1154 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1155 | rcu_read_lock(); |
| 1156 | list_for_each_entry_rcu(sta, &local->sta_list, list) |
Juuso Oikarinen | 3393a60 | 2010-04-19 10:12:52 +0300 | [diff] [blame] | 1157 | if (sta_info_cleanup_expire_buffered(local, sta)) |
| 1158 | timer_needed = true; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1159 | rcu_read_unlock(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1160 | |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 1161 | if (local->quiescing) |
| 1162 | return; |
| 1163 | |
Juuso Oikarinen | 3393a60 | 2010-04-19 10:12:52 +0300 | [diff] [blame] | 1164 | if (!timer_needed) |
| 1165 | return; |
| 1166 | |
Johannes Berg | 26d5953 | 2011-04-01 13:52:48 +0200 | [diff] [blame] | 1167 | mod_timer(&local->sta_cleanup, |
| 1168 | round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1169 | } |
| 1170 | |
Johannes Berg | 7bedd0c | 2015-02-13 21:55:15 +0100 | [diff] [blame] | 1171 | int sta_info_init(struct ieee80211_local *local) |
| 1172 | { |
| 1173 | int err; |
| 1174 | |
Herbert Xu | 83e7e4c | 2016-09-19 19:00:10 +0800 | [diff] [blame] | 1175 | err = rhltable_init(&local->sta_hash, &sta_rht_params); |
Johannes Berg | 7bedd0c | 2015-02-13 21:55:15 +0100 | [diff] [blame] | 1176 | if (err) |
| 1177 | return err; |
| 1178 | |
Johannes Berg | 4d33960 | 2011-12-15 11:24:20 +0100 | [diff] [blame] | 1179 | spin_lock_init(&local->tim_lock); |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1180 | mutex_init(&local->sta_mtx); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1181 | INIT_LIST_HEAD(&local->sta_list); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1182 | |
Kees Cook | 34f11cd | 2017-10-16 16:35:49 -0700 | [diff] [blame] | 1183 | timer_setup(&local->sta_cleanup, sta_info_cleanup, 0); |
Johannes Berg | 7bedd0c | 2015-02-13 21:55:15 +0100 | [diff] [blame] | 1184 | return 0; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1185 | } |
| 1186 | |
| 1187 | void sta_info_stop(struct ieee80211_local *local) |
| 1188 | { |
Johannes Berg | a56f992 | 2012-12-13 23:08:52 +0100 | [diff] [blame] | 1189 | del_timer_sync(&local->sta_cleanup); |
Herbert Xu | 83e7e4c | 2016-09-19 19:00:10 +0800 | [diff] [blame] | 1190 | rhltable_destroy(&local->sta_hash); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1191 | } |
| 1192 | |
Johannes Berg | 051007d | 2012-12-13 23:49:02 +0100 | [diff] [blame] | 1193 | |
Johannes Berg | e716251 | 2013-12-04 23:18:37 +0100 | [diff] [blame] | 1194 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1195 | { |
Johannes Berg | b998e8b | 2012-12-13 23:07:46 +0100 | [diff] [blame] | 1196 | struct ieee80211_local *local = sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1197 | struct sta_info *sta, *tmp; |
Johannes Berg | d778207 | 2013-12-04 23:12:31 +0100 | [diff] [blame] | 1198 | LIST_HEAD(free_list); |
Johannes Berg | 44213b5 | 2008-02-25 16:27:49 +0100 | [diff] [blame] | 1199 | int ret = 0; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1200 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 1201 | might_sleep(); |
| 1202 | |
Johannes Berg | e716251 | 2013-12-04 23:18:37 +0100 | [diff] [blame] | 1203 | WARN_ON(vlans && sdata->vif.type != NL80211_IFTYPE_AP); |
| 1204 | WARN_ON(vlans && !sdata->bss); |
| 1205 | |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1206 | mutex_lock(&local->sta_mtx); |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1207 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { |
Johannes Berg | e716251 | 2013-12-04 23:18:37 +0100 | [diff] [blame] | 1208 | if (sdata == sta->sdata || |
| 1209 | (vlans && sdata->bss == sta->sdata->bss)) { |
Johannes Berg | d778207 | 2013-12-04 23:12:31 +0100 | [diff] [blame] | 1210 | if (!WARN_ON(__sta_info_destroy_part1(sta))) |
| 1211 | list_add(&sta->free_list, &free_list); |
Johannes Berg | 3431683 | 2012-02-25 21:40:46 +0100 | [diff] [blame] | 1212 | ret++; |
| 1213 | } |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1214 | } |
Johannes Berg | d778207 | 2013-12-04 23:12:31 +0100 | [diff] [blame] | 1215 | |
| 1216 | if (!list_empty(&free_list)) { |
| 1217 | synchronize_net(); |
| 1218 | list_for_each_entry_safe(sta, tmp, &free_list, free_list) |
| 1219 | __sta_info_destroy_part2(sta); |
| 1220 | } |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1221 | mutex_unlock(&local->sta_mtx); |
Johannes Berg | 44213b5 | 2008-02-25 16:27:49 +0100 | [diff] [blame] | 1222 | |
Johannes Berg | 051007d | 2012-12-13 23:49:02 +0100 | [diff] [blame] | 1223 | return ret; |
| 1224 | } |
| 1225 | |
Johannes Berg | 24723d1 | 2008-09-11 00:01:46 +0200 | [diff] [blame] | 1226 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
| 1227 | unsigned long exp_time) |
| 1228 | { |
| 1229 | struct ieee80211_local *local = sdata->local; |
| 1230 | struct sta_info *sta, *tmp; |
Johannes Berg | 24723d1 | 2008-09-11 00:01:46 +0200 | [diff] [blame] | 1231 | |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1232 | mutex_lock(&local->sta_mtx); |
Mohammed Shafi Shajakhan | e46a2cf | 2011-12-26 10:43:29 +0530 | [diff] [blame] | 1233 | |
| 1234 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { |
Johannes Berg | b8da6b6 | 2016-03-31 20:02:07 +0300 | [diff] [blame] | 1235 | unsigned long last_active = ieee80211_sta_last_active(sta); |
| 1236 | |
Marek Lindner | ec2b774 | 2011-12-20 23:16:52 +0800 | [diff] [blame] | 1237 | if (sdata != sta->sdata) |
| 1238 | continue; |
| 1239 | |
Johannes Berg | b8da6b6 | 2016-03-31 20:02:07 +0300 | [diff] [blame] | 1240 | if (time_is_before_jiffies(last_active + exp_time)) { |
Mohammed Shafi Shajakhan | eea57d4 | 2012-10-08 21:33:47 +0530 | [diff] [blame] | 1241 | sta_dbg(sta->sdata, "expiring inactive STA %pM\n", |
| 1242 | sta->sta.addr); |
Marco Porsch | 3f52b7e | 2013-01-30 18:14:08 +0100 | [diff] [blame] | 1243 | |
| 1244 | if (ieee80211_vif_is_mesh(&sdata->vif) && |
| 1245 | test_sta_flag(sta, WLAN_STA_PS_STA)) |
| 1246 | atomic_dec(&sdata->u.mesh.ps.num_sta_ps); |
| 1247 | |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1248 | WARN_ON(__sta_info_destroy(sta)); |
Johannes Berg | 24723d1 | 2008-09-11 00:01:46 +0200 | [diff] [blame] | 1249 | } |
Mohammed Shafi Shajakhan | e46a2cf | 2011-12-26 10:43:29 +0530 | [diff] [blame] | 1250 | } |
| 1251 | |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1252 | mutex_unlock(&local->sta_mtx); |
Johannes Berg | 24723d1 | 2008-09-11 00:01:46 +0200 | [diff] [blame] | 1253 | } |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1254 | |
Ben Greear | 686b9cb | 2010-09-23 09:44:36 -0700 | [diff] [blame] | 1255 | struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, |
Johannes Berg | 7bedd0c | 2015-02-13 21:55:15 +0100 | [diff] [blame] | 1256 | const u8 *addr, |
| 1257 | const u8 *localaddr) |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1258 | { |
Johannes Berg | 7bedd0c | 2015-02-13 21:55:15 +0100 | [diff] [blame] | 1259 | struct ieee80211_local *local = hw_to_local(hw); |
Herbert Xu | 83e7e4c | 2016-09-19 19:00:10 +0800 | [diff] [blame] | 1260 | struct rhlist_head *tmp; |
Johannes Berg | 7bedd0c | 2015-02-13 21:55:15 +0100 | [diff] [blame] | 1261 | struct sta_info *sta; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1262 | |
Ben Greear | 686b9cb | 2010-09-23 09:44:36 -0700 | [diff] [blame] | 1263 | /* |
| 1264 | * Just return a random station if localaddr is NULL |
| 1265 | * ... first in list. |
| 1266 | */ |
Herbert Xu | 83e7e4c | 2016-09-19 19:00:10 +0800 | [diff] [blame] | 1267 | for_each_sta_info(local, addr, sta, tmp) { |
Ben Greear | 686b9cb | 2010-09-23 09:44:36 -0700 | [diff] [blame] | 1268 | if (localaddr && |
Joe Perches | b203ca3 | 2012-05-08 18:56:52 +0000 | [diff] [blame] | 1269 | !ether_addr_equal(sta->sdata->vif.addr, localaddr)) |
Ben Greear | 686b9cb | 2010-09-23 09:44:36 -0700 | [diff] [blame] | 1270 | continue; |
Johannes Berg | f7c6559 | 2010-04-30 13:48:36 +0200 | [diff] [blame] | 1271 | if (!sta->uploaded) |
| 1272 | return NULL; |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 1273 | return &sta->sta; |
Johannes Berg | f7c6559 | 2010-04-30 13:48:36 +0200 | [diff] [blame] | 1274 | } |
| 1275 | |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 1276 | return NULL; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1277 | } |
Ben Greear | 686b9cb | 2010-09-23 09:44:36 -0700 | [diff] [blame] | 1278 | EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_ifaddr); |
Johannes Berg | 5ed176e | 2009-11-04 14:42:28 +0100 | [diff] [blame] | 1279 | |
| 1280 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, |
| 1281 | const u8 *addr) |
| 1282 | { |
Johannes Berg | f7c6559 | 2010-04-30 13:48:36 +0200 | [diff] [blame] | 1283 | struct sta_info *sta; |
Johannes Berg | 5ed176e | 2009-11-04 14:42:28 +0100 | [diff] [blame] | 1284 | |
| 1285 | if (!vif) |
| 1286 | return NULL; |
| 1287 | |
Johannes Berg | f7c6559 | 2010-04-30 13:48:36 +0200 | [diff] [blame] | 1288 | sta = sta_info_get_bss(vif_to_sdata(vif), addr); |
| 1289 | if (!sta) |
| 1290 | return NULL; |
Johannes Berg | 5ed176e | 2009-11-04 14:42:28 +0100 | [diff] [blame] | 1291 | |
Johannes Berg | f7c6559 | 2010-04-30 13:48:36 +0200 | [diff] [blame] | 1292 | if (!sta->uploaded) |
| 1293 | return NULL; |
| 1294 | |
| 1295 | return &sta->sta; |
Johannes Berg | 5ed176e | 2009-11-04 14:42:28 +0100 | [diff] [blame] | 1296 | } |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1297 | EXPORT_SYMBOL(ieee80211_find_sta); |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1298 | |
Johannes Berg | e3685e0 | 2014-02-20 11:19:58 +0100 | [diff] [blame] | 1299 | /* powersave support code */ |
| 1300 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta) |
Johannes Berg | 50a9432 | 2010-11-16 11:50:28 -0800 | [diff] [blame] | 1301 | { |
Helmut Schaa | 608383b | 2012-01-30 15:18:00 +0100 | [diff] [blame] | 1302 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
Johannes Berg | e3685e0 | 2014-02-20 11:19:58 +0100 | [diff] [blame] | 1303 | struct ieee80211_local *local = sdata->local; |
| 1304 | struct sk_buff_head pending; |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 1305 | int filtered = 0, buffered = 0, ac, i; |
Johannes Berg | e3685e0 | 2014-02-20 11:19:58 +0100 | [diff] [blame] | 1306 | unsigned long flags; |
Marco Porsch | d012a60 | 2012-10-10 12:39:50 -0700 | [diff] [blame] | 1307 | struct ps_data *ps; |
| 1308 | |
Felix Fietkau | 3918edb | 2014-07-25 16:20:23 +0200 | [diff] [blame] | 1309 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
| 1310 | sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, |
| 1311 | u.ap); |
| 1312 | |
| 1313 | if (sdata->vif.type == NL80211_IFTYPE_AP) |
Marco Porsch | d012a60 | 2012-10-10 12:39:50 -0700 | [diff] [blame] | 1314 | ps = &sdata->bss->ps; |
Marco Porsch | 3f52b7e | 2013-01-30 18:14:08 +0100 | [diff] [blame] | 1315 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
| 1316 | ps = &sdata->u.mesh.ps; |
Marco Porsch | d012a60 | 2012-10-10 12:39:50 -0700 | [diff] [blame] | 1317 | else |
| 1318 | return; |
Johannes Berg | 50a9432 | 2010-11-16 11:50:28 -0800 | [diff] [blame] | 1319 | |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 1320 | clear_sta_flag(sta, WLAN_STA_SP); |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 1321 | |
Johannes Berg | 5a306f5 | 2012-11-14 23:22:21 +0100 | [diff] [blame] | 1322 | BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS) > 1); |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 1323 | sta->driver_buffered_tids = 0; |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 1324 | sta->txq_buffered_tids = 0; |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 1325 | |
Johannes Berg | 30686bf | 2015-06-02 21:39:54 +0200 | [diff] [blame] | 1326 | if (!ieee80211_hw_check(&local->hw, AP_LINK_PS)) |
Arik Nemtsov | d057e5a | 2011-01-31 22:29:13 +0200 | [diff] [blame] | 1327 | drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta); |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1328 | |
Johannes Berg | adf8ed0 | 2018-08-31 11:31:08 +0300 | [diff] [blame] | 1329 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { |
| 1330 | if (!sta->sta.txq[i] || !txq_has_queue(sta->sta.txq[i])) |
| 1331 | continue; |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 1332 | |
Toke Høiland-Jørgensen | 1866760 | 2018-12-18 17:02:06 -0800 | [diff] [blame] | 1333 | schedule_and_wake_txq(local, to_txq_info(sta->sta.txq[i])); |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 1334 | } |
| 1335 | |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 1336 | skb_queue_head_init(&pending); |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1337 | |
Emmanuel Grumbach | 1d147bf | 2014-02-20 09:22:11 +0200 | [diff] [blame] | 1338 | /* sync with ieee80211_tx_h_unicast_ps_buf */ |
| 1339 | spin_lock(&sta->ps_lock); |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1340 | /* Send all buffered frames to the station */ |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 1341 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
| 1342 | int count = skb_queue_len(&pending), tmp; |
| 1343 | |
Arik Nemtsov | 987c285 | 2012-11-05 10:27:52 +0200 | [diff] [blame] | 1344 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 1345 | skb_queue_splice_tail_init(&sta->tx_filtered[ac], &pending); |
Arik Nemtsov | 987c285 | 2012-11-05 10:27:52 +0200 | [diff] [blame] | 1346 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 1347 | tmp = skb_queue_len(&pending); |
| 1348 | filtered += tmp - count; |
| 1349 | count = tmp; |
| 1350 | |
Arik Nemtsov | 987c285 | 2012-11-05 10:27:52 +0200 | [diff] [blame] | 1351 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 1352 | skb_queue_splice_tail_init(&sta->ps_tx_buf[ac], &pending); |
Arik Nemtsov | 987c285 | 2012-11-05 10:27:52 +0200 | [diff] [blame] | 1353 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 1354 | tmp = skb_queue_len(&pending); |
| 1355 | buffered += tmp - count; |
| 1356 | } |
| 1357 | |
Johannes Berg | e3685e0 | 2014-02-20 11:19:58 +0100 | [diff] [blame] | 1358 | ieee80211_add_pending_skbs(local, &pending); |
Johannes Berg | 5ac2e35 | 2014-05-27 16:32:27 +0200 | [diff] [blame] | 1359 | |
| 1360 | /* now we're no longer in the deliver code */ |
| 1361 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); |
| 1362 | |
| 1363 | /* The station might have polled and then woken up before we responded, |
| 1364 | * so clear these flags now to avoid them sticking around. |
| 1365 | */ |
| 1366 | clear_sta_flag(sta, WLAN_STA_PSPOLL); |
| 1367 | clear_sta_flag(sta, WLAN_STA_UAPSD); |
Emmanuel Grumbach | 1d147bf | 2014-02-20 09:22:11 +0200 | [diff] [blame] | 1368 | spin_unlock(&sta->ps_lock); |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 1369 | |
Johannes Berg | e3685e0 | 2014-02-20 11:19:58 +0100 | [diff] [blame] | 1370 | atomic_dec(&ps->num_sta_ps); |
| 1371 | |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1372 | local->total_ps_buffered -= buffered; |
| 1373 | |
Johannes Berg | c868cb35 | 2011-09-29 16:04:27 +0200 | [diff] [blame] | 1374 | sta_info_recalc_tim(sta); |
| 1375 | |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 1376 | ps_dbg(sdata, |
Sara Sharon | 2595d25 | 2017-02-20 14:24:39 +0100 | [diff] [blame] | 1377 | "STA %pM aid %d sending %d filtered/%d PS frames since STA woke up\n", |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 1378 | sta->sta.addr, sta->sta.aid, filtered, buffered); |
Johannes Berg | 17c18bf | 2015-03-21 15:25:43 +0100 | [diff] [blame] | 1379 | |
| 1380 | ieee80211_check_fast_xmit(sta); |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1381 | } |
| 1382 | |
Emmanuel Grumbach | 0ead251 | 2015-11-17 10:24:36 +0200 | [diff] [blame] | 1383 | static void ieee80211_send_null_response(struct sta_info *sta, int tid, |
Johannes Berg | b77cf4f | 2014-01-09 00:00:38 +0100 | [diff] [blame] | 1384 | enum ieee80211_frame_release_type reason, |
Emmanuel Grumbach | 0ead251 | 2015-11-17 10:24:36 +0200 | [diff] [blame] | 1385 | bool call_driver, bool more_data) |
Johannes Berg | ce662b44 | 2011-09-29 16:04:34 +0200 | [diff] [blame] | 1386 | { |
Emmanuel Grumbach | 0ead251 | 2015-11-17 10:24:36 +0200 | [diff] [blame] | 1387 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
Johannes Berg | ce662b44 | 2011-09-29 16:04:34 +0200 | [diff] [blame] | 1388 | struct ieee80211_local *local = sdata->local; |
| 1389 | struct ieee80211_qos_hdr *nullfunc; |
| 1390 | struct sk_buff *skb; |
| 1391 | int size = sizeof(*nullfunc); |
| 1392 | __le16 fc; |
Johannes Berg | a74a8c8 | 2014-07-22 14:50:47 +0200 | [diff] [blame] | 1393 | bool qos = sta->sta.wme; |
Johannes Berg | ce662b44 | 2011-09-29 16:04:34 +0200 | [diff] [blame] | 1394 | struct ieee80211_tx_info *info; |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 1395 | struct ieee80211_chanctx_conf *chanctx_conf; |
Johannes Berg | ce662b44 | 2011-09-29 16:04:34 +0200 | [diff] [blame] | 1396 | |
Luca Coelho | 41cbb0f | 2018-06-09 09:14:44 +0300 | [diff] [blame] | 1397 | /* Don't send NDPs when STA is connected HE */ |
| 1398 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
| 1399 | !(sdata->u.mgd.flags & IEEE80211_STA_DISABLE_HE)) |
| 1400 | return; |
| 1401 | |
Johannes Berg | ce662b44 | 2011-09-29 16:04:34 +0200 | [diff] [blame] | 1402 | if (qos) { |
| 1403 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | |
| 1404 | IEEE80211_STYPE_QOS_NULLFUNC | |
| 1405 | IEEE80211_FCTL_FROMDS); |
| 1406 | } else { |
| 1407 | size -= 2; |
| 1408 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | |
| 1409 | IEEE80211_STYPE_NULLFUNC | |
| 1410 | IEEE80211_FCTL_FROMDS); |
| 1411 | } |
| 1412 | |
| 1413 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); |
| 1414 | if (!skb) |
| 1415 | return; |
| 1416 | |
| 1417 | skb_reserve(skb, local->hw.extra_tx_headroom); |
| 1418 | |
Johannes Berg | 4df864c | 2017-06-16 14:29:21 +0200 | [diff] [blame] | 1419 | nullfunc = skb_put(skb, size); |
Johannes Berg | ce662b44 | 2011-09-29 16:04:34 +0200 | [diff] [blame] | 1420 | nullfunc->frame_control = fc; |
| 1421 | nullfunc->duration_id = 0; |
| 1422 | memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); |
| 1423 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); |
| 1424 | memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); |
Johannes Berg | 864a604 | 2014-03-04 13:46:53 +0100 | [diff] [blame] | 1425 | nullfunc->seq_ctrl = 0; |
Johannes Berg | ce662b44 | 2011-09-29 16:04:34 +0200 | [diff] [blame] | 1426 | |
Johannes Berg | 59b6625 | 2011-10-13 13:19:19 +0200 | [diff] [blame] | 1427 | skb->priority = tid; |
| 1428 | skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]); |
Johannes Berg | ce662b44 | 2011-09-29 16:04:34 +0200 | [diff] [blame] | 1429 | if (qos) { |
Johannes Berg | ce662b44 | 2011-09-29 16:04:34 +0200 | [diff] [blame] | 1430 | nullfunc->qos_ctrl = cpu_to_le16(tid); |
| 1431 | |
Emmanuel Grumbach | 0ead251 | 2015-11-17 10:24:36 +0200 | [diff] [blame] | 1432 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) { |
Johannes Berg | ce662b44 | 2011-09-29 16:04:34 +0200 | [diff] [blame] | 1433 | nullfunc->qos_ctrl |= |
| 1434 | cpu_to_le16(IEEE80211_QOS_CTL_EOSP); |
Emmanuel Grumbach | 0ead251 | 2015-11-17 10:24:36 +0200 | [diff] [blame] | 1435 | if (more_data) |
| 1436 | nullfunc->frame_control |= |
| 1437 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); |
| 1438 | } |
Johannes Berg | ce662b44 | 2011-09-29 16:04:34 +0200 | [diff] [blame] | 1439 | } |
| 1440 | |
| 1441 | info = IEEE80211_SKB_CB(skb); |
| 1442 | |
| 1443 | /* |
| 1444 | * Tell TX path to send this frame even though the |
| 1445 | * STA may still remain is PS mode after this frame |
Johannes Berg | deeaee19 | 2011-09-29 16:04:35 +0200 | [diff] [blame] | 1446 | * exchange. Also set EOSP to indicate this packet |
| 1447 | * ends the poll/service period. |
Johannes Berg | ce662b44 | 2011-09-29 16:04:34 +0200 | [diff] [blame] | 1448 | */ |
Johannes Berg | 02f2f1a | 2012-02-27 12:18:30 +0100 | [diff] [blame] | 1449 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER | |
Johannes Berg | deeaee19 | 2011-09-29 16:04:35 +0200 | [diff] [blame] | 1450 | IEEE80211_TX_STATUS_EOSP | |
| 1451 | IEEE80211_TX_CTL_REQ_TX_STATUS; |
Johannes Berg | ce662b44 | 2011-09-29 16:04:34 +0200 | [diff] [blame] | 1452 | |
Sujith Manoharan | 6b127c7 | 2014-12-10 21:26:10 +0530 | [diff] [blame] | 1453 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; |
| 1454 | |
Johannes Berg | b77cf4f | 2014-01-09 00:00:38 +0100 | [diff] [blame] | 1455 | if (call_driver) |
| 1456 | drv_allow_buffered_frames(local, sta, BIT(tid), 1, |
| 1457 | reason, false); |
Johannes Berg | 40b9640 | 2011-09-29 16:04:38 +0200 | [diff] [blame] | 1458 | |
Johannes Berg | 89afe61 | 2013-02-13 15:39:57 +0100 | [diff] [blame] | 1459 | skb->dev = sdata->dev; |
| 1460 | |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 1461 | rcu_read_lock(); |
| 1462 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); |
| 1463 | if (WARN_ON(!chanctx_conf)) { |
| 1464 | rcu_read_unlock(); |
| 1465 | kfree_skb(skb); |
| 1466 | return; |
| 1467 | } |
| 1468 | |
Johannes Berg | 73c4e19 | 2014-11-09 18:50:09 +0200 | [diff] [blame] | 1469 | info->band = chanctx_conf->def.chan->band; |
Mathy Vanhoef | 08aca29 | 2020-07-23 14:01:52 +0400 | [diff] [blame] | 1470 | ieee80211_xmit(sdata, sta, skb); |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 1471 | rcu_read_unlock(); |
Johannes Berg | ce662b44 | 2011-09-29 16:04:34 +0200 | [diff] [blame] | 1472 | } |
| 1473 | |
Johannes Berg | 0a1cb80 | 2014-01-09 11:05:31 +0100 | [diff] [blame] | 1474 | static int find_highest_prio_tid(unsigned long tids) |
| 1475 | { |
| 1476 | /* lower 3 TIDs aren't ordered perfectly */ |
| 1477 | if (tids & 0xF8) |
| 1478 | return fls(tids) - 1; |
| 1479 | /* TID 0 is BE just like TID 3 */ |
| 1480 | if (tids & BIT(0)) |
| 1481 | return 0; |
| 1482 | return fls(tids) - 1; |
| 1483 | } |
| 1484 | |
Emmanuel Grumbach | 0ead251 | 2015-11-17 10:24:36 +0200 | [diff] [blame] | 1485 | /* Indicates if the MORE_DATA bit should be set in the last |
| 1486 | * frame obtained by ieee80211_sta_ps_get_frames. |
| 1487 | * Note that driver_release_tids is relevant only if |
| 1488 | * reason = IEEE80211_FRAME_RELEASE_PSPOLL |
| 1489 | */ |
| 1490 | static bool |
| 1491 | ieee80211_sta_ps_more_data(struct sta_info *sta, u8 ignored_acs, |
| 1492 | enum ieee80211_frame_release_type reason, |
| 1493 | unsigned long driver_release_tids) |
| 1494 | { |
| 1495 | int ac; |
| 1496 | |
| 1497 | /* If the driver has data on more than one TID then |
| 1498 | * certainly there's more data if we release just a |
| 1499 | * single frame now (from a single TID). This will |
| 1500 | * only happen for PS-Poll. |
| 1501 | */ |
| 1502 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL && |
| 1503 | hweight16(driver_release_tids) > 1) |
| 1504 | return true; |
| 1505 | |
| 1506 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
Emmanuel Grumbach | f438ceb | 2016-10-18 23:12:12 +0300 | [diff] [blame] | 1507 | if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
Emmanuel Grumbach | 0ead251 | 2015-11-17 10:24:36 +0200 | [diff] [blame] | 1508 | continue; |
| 1509 | |
| 1510 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || |
| 1511 | !skb_queue_empty(&sta->ps_tx_buf[ac])) |
| 1512 | return true; |
| 1513 | } |
| 1514 | |
| 1515 | return false; |
| 1516 | } |
| 1517 | |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 1518 | static void |
Emmanuel Grumbach | 0ead251 | 2015-11-17 10:24:36 +0200 | [diff] [blame] | 1519 | ieee80211_sta_ps_get_frames(struct sta_info *sta, int n_frames, u8 ignored_acs, |
| 1520 | enum ieee80211_frame_release_type reason, |
| 1521 | struct sk_buff_head *frames, |
| 1522 | unsigned long *driver_release_tids) |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1523 | { |
| 1524 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
| 1525 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 1526 | int ac; |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1527 | |
Johannes Berg | f9f760b | 2014-01-08 17:45:07 +0100 | [diff] [blame] | 1528 | /* Get response frame(s) and more data bit for the last one. */ |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 1529 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
Johannes Berg | 4049e09 | 2011-09-29 16:04:32 +0200 | [diff] [blame] | 1530 | unsigned long tids; |
| 1531 | |
Emmanuel Grumbach | f438ceb | 2016-10-18 23:12:12 +0300 | [diff] [blame] | 1532 | if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 1533 | continue; |
| 1534 | |
Johannes Berg | 4049e09 | 2011-09-29 16:04:32 +0200 | [diff] [blame] | 1535 | tids = ieee80211_tids_for_ac(ac); |
| 1536 | |
Johannes Berg | f9f760b | 2014-01-08 17:45:07 +0100 | [diff] [blame] | 1537 | /* if we already have frames from software, then we can't also |
| 1538 | * release from hardware queues |
| 1539 | */ |
Emmanuel Grumbach | 0ead251 | 2015-11-17 10:24:36 +0200 | [diff] [blame] | 1540 | if (skb_queue_empty(frames)) { |
| 1541 | *driver_release_tids |= |
| 1542 | sta->driver_buffered_tids & tids; |
| 1543 | *driver_release_tids |= sta->txq_buffered_tids & tids; |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 1544 | } |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 1545 | |
Emmanuel Grumbach | 0ead251 | 2015-11-17 10:24:36 +0200 | [diff] [blame] | 1546 | if (!*driver_release_tids) { |
Johannes Berg | f9f760b | 2014-01-08 17:45:07 +0100 | [diff] [blame] | 1547 | struct sk_buff *skb; |
| 1548 | |
| 1549 | while (n_frames > 0) { |
| 1550 | skb = skb_dequeue(&sta->tx_filtered[ac]); |
| 1551 | if (!skb) { |
| 1552 | skb = skb_dequeue( |
| 1553 | &sta->ps_tx_buf[ac]); |
| 1554 | if (skb) |
| 1555 | local->total_ps_buffered--; |
| 1556 | } |
| 1557 | if (!skb) |
| 1558 | break; |
| 1559 | n_frames--; |
Emmanuel Grumbach | 0ead251 | 2015-11-17 10:24:36 +0200 | [diff] [blame] | 1560 | __skb_queue_tail(frames, skb); |
Johannes Berg | f9f760b | 2014-01-08 17:45:07 +0100 | [diff] [blame] | 1561 | } |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 1562 | } |
| 1563 | |
Emmanuel Grumbach | 0ead251 | 2015-11-17 10:24:36 +0200 | [diff] [blame] | 1564 | /* If we have more frames buffered on this AC, then abort the |
| 1565 | * loop since we can't send more data from other ACs before |
| 1566 | * the buffered frames from this. |
Johannes Berg | f9f760b | 2014-01-08 17:45:07 +0100 | [diff] [blame] | 1567 | */ |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 1568 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || |
Emmanuel Grumbach | 0ead251 | 2015-11-17 10:24:36 +0200 | [diff] [blame] | 1569 | !skb_queue_empty(&sta->ps_tx_buf[ac])) |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 1570 | break; |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1571 | } |
Emmanuel Grumbach | 0ead251 | 2015-11-17 10:24:36 +0200 | [diff] [blame] | 1572 | } |
| 1573 | |
| 1574 | static void |
| 1575 | ieee80211_sta_ps_deliver_response(struct sta_info *sta, |
| 1576 | int n_frames, u8 ignored_acs, |
| 1577 | enum ieee80211_frame_release_type reason) |
| 1578 | { |
| 1579 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
| 1580 | struct ieee80211_local *local = sdata->local; |
| 1581 | unsigned long driver_release_tids = 0; |
| 1582 | struct sk_buff_head frames; |
| 1583 | bool more_data; |
| 1584 | |
| 1585 | /* Service or PS-Poll period starts */ |
| 1586 | set_sta_flag(sta, WLAN_STA_SP); |
| 1587 | |
| 1588 | __skb_queue_head_init(&frames); |
| 1589 | |
| 1590 | ieee80211_sta_ps_get_frames(sta, n_frames, ignored_acs, reason, |
| 1591 | &frames, &driver_release_tids); |
| 1592 | |
| 1593 | more_data = ieee80211_sta_ps_more_data(sta, ignored_acs, reason, driver_release_tids); |
| 1594 | |
Emmanuel Grumbach | 1a57081 | 2015-12-20 13:50:00 +0200 | [diff] [blame] | 1595 | if (driver_release_tids && reason == IEEE80211_FRAME_RELEASE_PSPOLL) |
Emmanuel Grumbach | 0ead251 | 2015-11-17 10:24:36 +0200 | [diff] [blame] | 1596 | driver_release_tids = |
| 1597 | BIT(find_highest_prio_tid(driver_release_tids)); |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1598 | |
Johannes Berg | f9f760b | 2014-01-08 17:45:07 +0100 | [diff] [blame] | 1599 | if (skb_queue_empty(&frames) && !driver_release_tids) { |
Emmanuel Grumbach | f438ceb | 2016-10-18 23:12:12 +0300 | [diff] [blame] | 1600 | int tid, ac; |
Johannes Berg | 4049e09 | 2011-09-29 16:04:32 +0200 | [diff] [blame] | 1601 | |
Johannes Berg | ce662b44 | 2011-09-29 16:04:34 +0200 | [diff] [blame] | 1602 | /* |
| 1603 | * For PS-Poll, this can only happen due to a race condition |
| 1604 | * when we set the TIM bit and the station notices it, but |
| 1605 | * before it can poll for the frame we expire it. |
| 1606 | * |
| 1607 | * For uAPSD, this is said in the standard (11.2.1.5 h): |
| 1608 | * At each unscheduled SP for a non-AP STA, the AP shall |
| 1609 | * attempt to transmit at least one MSDU or MMPDU, but no |
| 1610 | * more than the value specified in the Max SP Length field |
| 1611 | * in the QoS Capability element from delivery-enabled ACs, |
| 1612 | * that are destined for the non-AP STA. |
| 1613 | * |
| 1614 | * Since we have no other MSDU/MMPDU, transmit a QoS null frame. |
| 1615 | */ |
| 1616 | |
| 1617 | /* This will evaluate to 1, 3, 5 or 7. */ |
Emmanuel Grumbach | f438ceb | 2016-10-18 23:12:12 +0300 | [diff] [blame] | 1618 | for (ac = IEEE80211_AC_VO; ac < IEEE80211_NUM_ACS; ac++) |
Emmanuel Grumbach | d7f8424 | 2016-10-25 10:32:16 +0300 | [diff] [blame] | 1619 | if (!(ignored_acs & ieee80211_ac_to_qos_mask[ac])) |
| 1620 | break; |
Emmanuel Grumbach | f438ceb | 2016-10-18 23:12:12 +0300 | [diff] [blame] | 1621 | tid = 7 - 2 * ac; |
Johannes Berg | ce662b44 | 2011-09-29 16:04:34 +0200 | [diff] [blame] | 1622 | |
Emmanuel Grumbach | 0ead251 | 2015-11-17 10:24:36 +0200 | [diff] [blame] | 1623 | ieee80211_send_null_response(sta, tid, reason, true, false); |
Johannes Berg | f9f760b | 2014-01-08 17:45:07 +0100 | [diff] [blame] | 1624 | } else if (!driver_release_tids) { |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 1625 | struct sk_buff_head pending; |
| 1626 | struct sk_buff *skb; |
Johannes Berg | 40b9640 | 2011-09-29 16:04:38 +0200 | [diff] [blame] | 1627 | int num = 0; |
| 1628 | u16 tids = 0; |
Johannes Berg | b77cf4f | 2014-01-09 00:00:38 +0100 | [diff] [blame] | 1629 | bool need_null = false; |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1630 | |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 1631 | skb_queue_head_init(&pending); |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1632 | |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 1633 | while ((skb = __skb_dequeue(&frames))) { |
| 1634 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| 1635 | struct ieee80211_hdr *hdr = (void *) skb->data; |
Johannes Berg | 40b9640 | 2011-09-29 16:04:38 +0200 | [diff] [blame] | 1636 | u8 *qoshdr = NULL; |
| 1637 | |
| 1638 | num++; |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1639 | |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 1640 | /* |
| 1641 | * Tell TX path to send this frame even though the |
| 1642 | * STA may still remain is PS mode after this frame |
| 1643 | * exchange. |
| 1644 | */ |
Sujith Manoharan | 6b127c7 | 2014-12-10 21:26:10 +0530 | [diff] [blame] | 1645 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER; |
| 1646 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1647 | |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 1648 | /* |
| 1649 | * Use MoreData flag to indicate whether there are |
| 1650 | * more buffered frames for this STA |
| 1651 | */ |
Janusz.Dziedzic@tieto.com | 24b9c37 | 2011-11-07 09:47:47 +0200 | [diff] [blame] | 1652 | if (more_data || !skb_queue_empty(&frames)) |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 1653 | hdr->frame_control |= |
| 1654 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); |
Janusz.Dziedzic@tieto.com | 24b9c37 | 2011-11-07 09:47:47 +0200 | [diff] [blame] | 1655 | else |
| 1656 | hdr->frame_control &= |
| 1657 | cpu_to_le16(~IEEE80211_FCTL_MOREDATA); |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 1658 | |
Johannes Berg | 40b9640 | 2011-09-29 16:04:38 +0200 | [diff] [blame] | 1659 | if (ieee80211_is_data_qos(hdr->frame_control) || |
| 1660 | ieee80211_is_qos_nullfunc(hdr->frame_control)) |
| 1661 | qoshdr = ieee80211_get_qos_ctl(hdr); |
| 1662 | |
Johannes Berg | b77cf4f | 2014-01-09 00:00:38 +0100 | [diff] [blame] | 1663 | tids |= BIT(skb->priority); |
| 1664 | |
| 1665 | __skb_queue_tail(&pending, skb); |
| 1666 | |
| 1667 | /* end service period after last frame or add one */ |
| 1668 | if (!skb_queue_empty(&frames)) |
| 1669 | continue; |
| 1670 | |
| 1671 | if (reason != IEEE80211_FRAME_RELEASE_UAPSD) { |
| 1672 | /* for PS-Poll, there's only one frame */ |
| 1673 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
| 1674 | IEEE80211_TX_CTL_REQ_TX_STATUS; |
| 1675 | break; |
| 1676 | } |
| 1677 | |
| 1678 | /* For uAPSD, things are a bit more complicated. If the |
| 1679 | * last frame has a QoS header (i.e. is a QoS-data or |
| 1680 | * QoS-nulldata frame) then just set the EOSP bit there |
| 1681 | * and be done. |
| 1682 | * If the frame doesn't have a QoS header (which means |
| 1683 | * it should be a bufferable MMPDU) then we can't set |
| 1684 | * the EOSP bit in the QoS header; add a QoS-nulldata |
| 1685 | * frame to the list to send it after the MMPDU. |
| 1686 | * |
| 1687 | * Note that this code is only in the mac80211-release |
| 1688 | * code path, we assume that the driver will not buffer |
| 1689 | * anything but QoS-data frames, or if it does, will |
| 1690 | * create the QoS-nulldata frame by itself if needed. |
| 1691 | * |
| 1692 | * Cf. 802.11-2012 10.2.1.10 (c). |
| 1693 | */ |
| 1694 | if (qoshdr) { |
| 1695 | *qoshdr |= IEEE80211_QOS_CTL_EOSP; |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 1696 | |
Marco Porsch | 52a3f20 | 2012-03-16 15:30:26 +0100 | [diff] [blame] | 1697 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
| 1698 | IEEE80211_TX_CTL_REQ_TX_STATUS; |
Johannes Berg | b77cf4f | 2014-01-09 00:00:38 +0100 | [diff] [blame] | 1699 | } else { |
| 1700 | /* The standard isn't completely clear on this |
| 1701 | * as it says the more-data bit should be set |
| 1702 | * if there are more BUs. The QoS-Null frame |
| 1703 | * we're about to send isn't buffered yet, we |
| 1704 | * only create it below, but let's pretend it |
| 1705 | * was buffered just in case some clients only |
| 1706 | * expect more-data=0 when eosp=1. |
| 1707 | */ |
| 1708 | hdr->frame_control |= |
| 1709 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); |
| 1710 | need_null = true; |
| 1711 | num++; |
Marco Porsch | 52a3f20 | 2012-03-16 15:30:26 +0100 | [diff] [blame] | 1712 | } |
Johannes Berg | b77cf4f | 2014-01-09 00:00:38 +0100 | [diff] [blame] | 1713 | break; |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 1714 | } |
| 1715 | |
Johannes Berg | 40b9640 | 2011-09-29 16:04:38 +0200 | [diff] [blame] | 1716 | drv_allow_buffered_frames(local, sta, tids, num, |
| 1717 | reason, more_data); |
| 1718 | |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 1719 | ieee80211_add_pending_skbs(local, &pending); |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1720 | |
Johannes Berg | b77cf4f | 2014-01-09 00:00:38 +0100 | [diff] [blame] | 1721 | if (need_null) |
| 1722 | ieee80211_send_null_response( |
Emmanuel Grumbach | 0ead251 | 2015-11-17 10:24:36 +0200 | [diff] [blame] | 1723 | sta, find_highest_prio_tid(tids), |
| 1724 | reason, false, false); |
Johannes Berg | b77cf4f | 2014-01-09 00:00:38 +0100 | [diff] [blame] | 1725 | |
Johannes Berg | c868cb35 | 2011-09-29 16:04:27 +0200 | [diff] [blame] | 1726 | sta_info_recalc_tim(sta); |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1727 | } else { |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 1728 | int tid; |
| 1729 | |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1730 | /* |
Johannes Berg | 4049e09 | 2011-09-29 16:04:32 +0200 | [diff] [blame] | 1731 | * We need to release a frame that is buffered somewhere in the |
| 1732 | * driver ... it'll have to handle that. |
Johannes Berg | f9f760b | 2014-01-08 17:45:07 +0100 | [diff] [blame] | 1733 | * Note that the driver also has to check the number of frames |
| 1734 | * on the TIDs we're releasing from - if there are more than |
| 1735 | * n_frames it has to set the more-data bit (if we didn't ask |
| 1736 | * it to set it anyway due to other buffered frames); if there |
| 1737 | * are fewer than n_frames it has to make sure to adjust that |
| 1738 | * to allow the service period to end properly. |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1739 | */ |
Johannes Berg | 4049e09 | 2011-09-29 16:04:32 +0200 | [diff] [blame] | 1740 | drv_release_buffered_frames(local, sta, driver_release_tids, |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 1741 | n_frames, reason, more_data); |
Johannes Berg | 4049e09 | 2011-09-29 16:04:32 +0200 | [diff] [blame] | 1742 | |
| 1743 | /* |
| 1744 | * Note that we don't recalculate the TIM bit here as it would |
| 1745 | * most likely have no effect at all unless the driver told us |
Johannes Berg | f9f760b | 2014-01-08 17:45:07 +0100 | [diff] [blame] | 1746 | * that the TID(s) became empty before returning here from the |
Johannes Berg | 4049e09 | 2011-09-29 16:04:32 +0200 | [diff] [blame] | 1747 | * release function. |
Johannes Berg | f9f760b | 2014-01-08 17:45:07 +0100 | [diff] [blame] | 1748 | * Either way, however, when the driver tells us that the TID(s) |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 1749 | * became empty or we find that a txq became empty, we'll do the |
| 1750 | * TIM recalculation. |
Johannes Berg | 4049e09 | 2011-09-29 16:04:32 +0200 | [diff] [blame] | 1751 | */ |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 1752 | |
| 1753 | if (!sta->sta.txq[0]) |
| 1754 | return; |
| 1755 | |
| 1756 | for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) { |
Johannes Berg | adf8ed0 | 2018-08-31 11:31:08 +0300 | [diff] [blame] | 1757 | if (!sta->sta.txq[tid] || |
| 1758 | !(driver_release_tids & BIT(tid)) || |
Johannes Berg | 1e1430d | 2016-10-04 09:22:19 +0200 | [diff] [blame] | 1759 | txq_has_queue(sta->sta.txq[tid])) |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 1760 | continue; |
| 1761 | |
| 1762 | sta_info_recalc_tim(sta); |
| 1763 | break; |
| 1764 | } |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1765 | } |
| 1766 | } |
| 1767 | |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1768 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta) |
| 1769 | { |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 1770 | u8 ignore_for_response = sta->sta.uapsd_queues; |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1771 | |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 1772 | /* |
| 1773 | * If all ACs are delivery-enabled then we should reply |
| 1774 | * from any of them, if only some are enabled we reply |
| 1775 | * only from the non-enabled ones. |
| 1776 | */ |
| 1777 | if (ignore_for_response == BIT(IEEE80211_NUM_ACS) - 1) |
| 1778 | ignore_for_response = 0; |
| 1779 | |
| 1780 | ieee80211_sta_ps_deliver_response(sta, 1, ignore_for_response, |
| 1781 | IEEE80211_FRAME_RELEASE_PSPOLL); |
| 1782 | } |
| 1783 | |
| 1784 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta) |
| 1785 | { |
| 1786 | int n_frames = sta->sta.max_sp; |
| 1787 | u8 delivery_enabled = sta->sta.uapsd_queues; |
| 1788 | |
| 1789 | /* |
| 1790 | * If we ever grow support for TSPEC this might happen if |
| 1791 | * the TSPEC update from hostapd comes in between a trigger |
| 1792 | * frame setting WLAN_STA_UAPSD in the RX path and this |
| 1793 | * actually getting called. |
| 1794 | */ |
| 1795 | if (!delivery_enabled) |
| 1796 | return; |
| 1797 | |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 1798 | switch (sta->sta.max_sp) { |
| 1799 | case 1: |
| 1800 | n_frames = 2; |
| 1801 | break; |
| 1802 | case 2: |
| 1803 | n_frames = 4; |
| 1804 | break; |
| 1805 | case 3: |
| 1806 | n_frames = 6; |
| 1807 | break; |
| 1808 | case 0: |
| 1809 | /* XXX: what is a good value? */ |
Andrei Otcheretianski | 13a8098 | 2014-11-04 11:33:04 +0200 | [diff] [blame] | 1810 | n_frames = 128; |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 1811 | break; |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1812 | } |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1813 | |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 1814 | ieee80211_sta_ps_deliver_response(sta, n_frames, ~delivery_enabled, |
| 1815 | IEEE80211_FRAME_RELEASE_UAPSD); |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1816 | } |
| 1817 | |
| 1818 | void ieee80211_sta_block_awake(struct ieee80211_hw *hw, |
| 1819 | struct ieee80211_sta *pubsta, bool block) |
| 1820 | { |
| 1821 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
| 1822 | |
Johannes Berg | b5878a2 | 2010-04-07 16:48:40 +0200 | [diff] [blame] | 1823 | trace_api_sta_block_awake(sta->local, pubsta, block); |
| 1824 | |
Johannes Berg | 5ac2e35 | 2014-05-27 16:32:27 +0200 | [diff] [blame] | 1825 | if (block) { |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 1826 | set_sta_flag(sta, WLAN_STA_PS_DRIVER); |
Johannes Berg | 17c18bf | 2015-03-21 15:25:43 +0100 | [diff] [blame] | 1827 | ieee80211_clear_fast_xmit(sta); |
Johannes Berg | 5ac2e35 | 2014-05-27 16:32:27 +0200 | [diff] [blame] | 1828 | return; |
| 1829 | } |
| 1830 | |
| 1831 | if (!test_sta_flag(sta, WLAN_STA_PS_DRIVER)) |
| 1832 | return; |
| 1833 | |
| 1834 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) { |
| 1835 | set_sta_flag(sta, WLAN_STA_PS_DELIVER); |
| 1836 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); |
| 1837 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); |
| 1838 | } else if (test_sta_flag(sta, WLAN_STA_PSPOLL) || |
| 1839 | test_sta_flag(sta, WLAN_STA_UAPSD)) { |
| 1840 | /* must be asleep in this case */ |
| 1841 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); |
| 1842 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); |
| 1843 | } else { |
| 1844 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); |
Johannes Berg | 17c18bf | 2015-03-21 15:25:43 +0100 | [diff] [blame] | 1845 | ieee80211_check_fast_xmit(sta); |
Johannes Berg | 5ac2e35 | 2014-05-27 16:32:27 +0200 | [diff] [blame] | 1846 | } |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 1847 | } |
| 1848 | EXPORT_SYMBOL(ieee80211_sta_block_awake); |
Felix Fietkau | dcf55fb | 2011-04-17 17:45:00 +0200 | [diff] [blame] | 1849 | |
Johannes Berg | e943789 | 2013-02-15 21:38:08 +0100 | [diff] [blame] | 1850 | void ieee80211_sta_eosp(struct ieee80211_sta *pubsta) |
Johannes Berg | 37fbd90 | 2011-09-29 16:04:39 +0200 | [diff] [blame] | 1851 | { |
| 1852 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
| 1853 | struct ieee80211_local *local = sta->local; |
Johannes Berg | 37fbd90 | 2011-09-29 16:04:39 +0200 | [diff] [blame] | 1854 | |
| 1855 | trace_api_eosp(local, pubsta); |
| 1856 | |
Johannes Berg | e943789 | 2013-02-15 21:38:08 +0100 | [diff] [blame] | 1857 | clear_sta_flag(sta, WLAN_STA_SP); |
Johannes Berg | 37fbd90 | 2011-09-29 16:04:39 +0200 | [diff] [blame] | 1858 | } |
Johannes Berg | e943789 | 2013-02-15 21:38:08 +0100 | [diff] [blame] | 1859 | EXPORT_SYMBOL(ieee80211_sta_eosp); |
Johannes Berg | 37fbd90 | 2011-09-29 16:04:39 +0200 | [diff] [blame] | 1860 | |
Emmanuel Grumbach | 0ead251 | 2015-11-17 10:24:36 +0200 | [diff] [blame] | 1861 | void ieee80211_send_eosp_nullfunc(struct ieee80211_sta *pubsta, int tid) |
| 1862 | { |
| 1863 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
| 1864 | enum ieee80211_frame_release_type reason; |
| 1865 | bool more_data; |
| 1866 | |
| 1867 | trace_api_send_eosp_nullfunc(sta->local, pubsta, tid); |
| 1868 | |
| 1869 | reason = IEEE80211_FRAME_RELEASE_UAPSD; |
| 1870 | more_data = ieee80211_sta_ps_more_data(sta, ~sta->sta.uapsd_queues, |
| 1871 | reason, 0); |
| 1872 | |
| 1873 | ieee80211_send_null_response(sta, tid, reason, false, more_data); |
| 1874 | } |
| 1875 | EXPORT_SYMBOL(ieee80211_send_eosp_nullfunc); |
| 1876 | |
Johannes Berg | 042ec45 | 2011-09-29 16:04:26 +0200 | [diff] [blame] | 1877 | void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, |
| 1878 | u8 tid, bool buffered) |
Felix Fietkau | dcf55fb | 2011-04-17 17:45:00 +0200 | [diff] [blame] | 1879 | { |
| 1880 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
| 1881 | |
Johannes Berg | 5a306f5 | 2012-11-14 23:22:21 +0100 | [diff] [blame] | 1882 | if (WARN_ON(tid >= IEEE80211_NUM_TIDS)) |
Johannes Berg | 042ec45 | 2011-09-29 16:04:26 +0200 | [diff] [blame] | 1883 | return; |
| 1884 | |
Johannes Berg | 1b00078 | 2013-12-19 10:47:48 +0100 | [diff] [blame] | 1885 | trace_api_sta_set_buffered(sta->local, pubsta, tid, buffered); |
| 1886 | |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 1887 | if (buffered) |
| 1888 | set_bit(tid, &sta->driver_buffered_tids); |
| 1889 | else |
| 1890 | clear_bit(tid, &sta->driver_buffered_tids); |
| 1891 | |
Johannes Berg | c868cb35 | 2011-09-29 16:04:27 +0200 | [diff] [blame] | 1892 | sta_info_recalc_tim(sta); |
Felix Fietkau | dcf55fb | 2011-04-17 17:45:00 +0200 | [diff] [blame] | 1893 | } |
Johannes Berg | 042ec45 | 2011-09-29 16:04:26 +0200 | [diff] [blame] | 1894 | EXPORT_SYMBOL(ieee80211_sta_set_buffered); |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 1895 | |
Toke Høiland-Jørgensen | b4809e9 | 2018-12-18 17:02:08 -0800 | [diff] [blame] | 1896 | void ieee80211_sta_register_airtime(struct ieee80211_sta *pubsta, u8 tid, |
| 1897 | u32 tx_airtime, u32 rx_airtime) |
| 1898 | { |
| 1899 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
| 1900 | struct ieee80211_local *local = sta->sdata->local; |
| 1901 | u8 ac = ieee80211_ac_from_tid(tid); |
| 1902 | u32 airtime = 0; |
| 1903 | |
| 1904 | if (sta->local->airtime_flags & AIRTIME_USE_TX) |
| 1905 | airtime += tx_airtime; |
| 1906 | if (sta->local->airtime_flags & AIRTIME_USE_RX) |
| 1907 | airtime += rx_airtime; |
| 1908 | |
| 1909 | spin_lock_bh(&local->active_txq_lock[ac]); |
| 1910 | sta->airtime[ac].tx_airtime += tx_airtime; |
| 1911 | sta->airtime[ac].rx_airtime += rx_airtime; |
| 1912 | sta->airtime[ac].deficit -= airtime; |
| 1913 | spin_unlock_bh(&local->active_txq_lock[ac]); |
| 1914 | } |
| 1915 | EXPORT_SYMBOL(ieee80211_sta_register_airtime); |
| 1916 | |
Kan Yan | 3ace10f | 2019-11-18 22:06:09 -0800 | [diff] [blame] | 1917 | void ieee80211_sta_update_pending_airtime(struct ieee80211_local *local, |
| 1918 | struct sta_info *sta, u8 ac, |
| 1919 | u16 tx_airtime, bool tx_completed) |
| 1920 | { |
| 1921 | int tx_pending; |
| 1922 | |
Toke Høiland-Jørgensen | 911bde0 | 2019-12-12 12:14:37 +0100 | [diff] [blame] | 1923 | if (!wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_AQL)) |
| 1924 | return; |
| 1925 | |
Kan Yan | 3ace10f | 2019-11-18 22:06:09 -0800 | [diff] [blame] | 1926 | if (!tx_completed) { |
| 1927 | if (sta) |
| 1928 | atomic_add(tx_airtime, |
| 1929 | &sta->airtime[ac].aql_tx_pending); |
| 1930 | |
| 1931 | atomic_add(tx_airtime, &local->aql_total_pending_airtime); |
| 1932 | return; |
| 1933 | } |
| 1934 | |
| 1935 | if (sta) { |
| 1936 | tx_pending = atomic_sub_return(tx_airtime, |
| 1937 | &sta->airtime[ac].aql_tx_pending); |
Felix Fietkau | 04e35ca | 2020-07-25 10:45:33 +0200 | [diff] [blame] | 1938 | if (tx_pending < 0) |
Kan Yan | 3ace10f | 2019-11-18 22:06:09 -0800 | [diff] [blame] | 1939 | atomic_cmpxchg(&sta->airtime[ac].aql_tx_pending, |
| 1940 | tx_pending, 0); |
| 1941 | } |
| 1942 | |
| 1943 | tx_pending = atomic_sub_return(tx_airtime, |
| 1944 | &local->aql_total_pending_airtime); |
| 1945 | if (WARN_ONCE(tx_pending < 0, |
| 1946 | "Device %s AC %d pending airtime underflow: %u, %u", |
| 1947 | wiphy_name(local->hw.wiphy), ac, tx_pending, |
| 1948 | tx_airtime)) |
| 1949 | atomic_cmpxchg(&local->aql_total_pending_airtime, |
| 1950 | tx_pending, 0); |
| 1951 | } |
| 1952 | |
Johannes Berg | 83d5cc0 | 2012-01-12 09:31:10 +0100 | [diff] [blame] | 1953 | int sta_info_move_state(struct sta_info *sta, |
| 1954 | enum ieee80211_sta_state new_state) |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 1955 | { |
Johannes Berg | 8bf11d8 | 2011-12-15 11:17:37 +0100 | [diff] [blame] | 1956 | might_sleep(); |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 1957 | |
| 1958 | if (sta->sta_state == new_state) |
| 1959 | return 0; |
| 1960 | |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 1961 | /* check allowed transitions first */ |
| 1962 | |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 1963 | switch (new_state) { |
| 1964 | case IEEE80211_STA_NONE: |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 1965 | if (sta->sta_state != IEEE80211_STA_AUTH) |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 1966 | return -EINVAL; |
| 1967 | break; |
| 1968 | case IEEE80211_STA_AUTH: |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 1969 | if (sta->sta_state != IEEE80211_STA_NONE && |
| 1970 | sta->sta_state != IEEE80211_STA_ASSOC) |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 1971 | return -EINVAL; |
| 1972 | break; |
| 1973 | case IEEE80211_STA_ASSOC: |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 1974 | if (sta->sta_state != IEEE80211_STA_AUTH && |
| 1975 | sta->sta_state != IEEE80211_STA_AUTHORIZED) |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 1976 | return -EINVAL; |
| 1977 | break; |
| 1978 | case IEEE80211_STA_AUTHORIZED: |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 1979 | if (sta->sta_state != IEEE80211_STA_ASSOC) |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 1980 | return -EINVAL; |
| 1981 | break; |
| 1982 | default: |
| 1983 | WARN(1, "invalid state %d", new_state); |
| 1984 | return -EINVAL; |
| 1985 | } |
| 1986 | |
Johannes Berg | bdcbd8e | 2012-06-22 11:29:50 +0200 | [diff] [blame] | 1987 | sta_dbg(sta->sdata, "moving STA %pM to state %d\n", |
| 1988 | sta->sta.addr, new_state); |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 1989 | |
| 1990 | /* |
| 1991 | * notify the driver before the actual changes so it can |
| 1992 | * fail the transition |
| 1993 | */ |
| 1994 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) { |
| 1995 | int err = drv_sta_state(sta->local, sta->sdata, sta, |
| 1996 | sta->sta_state, new_state); |
| 1997 | if (err) |
| 1998 | return err; |
| 1999 | } |
| 2000 | |
| 2001 | /* reflect the change in all state variables */ |
| 2002 | |
| 2003 | switch (new_state) { |
| 2004 | case IEEE80211_STA_NONE: |
| 2005 | if (sta->sta_state == IEEE80211_STA_AUTH) |
| 2006 | clear_bit(WLAN_STA_AUTH, &sta->_flags); |
| 2007 | break; |
| 2008 | case IEEE80211_STA_AUTH: |
Ilan Peer | a7201a6 | 2015-12-13 13:41:43 +0200 | [diff] [blame] | 2009 | if (sta->sta_state == IEEE80211_STA_NONE) { |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 2010 | set_bit(WLAN_STA_AUTH, &sta->_flags); |
Ilan Peer | a7201a6 | 2015-12-13 13:41:43 +0200 | [diff] [blame] | 2011 | } else if (sta->sta_state == IEEE80211_STA_ASSOC) { |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 2012 | clear_bit(WLAN_STA_ASSOC, &sta->_flags); |
Ilan Peer | a7201a6 | 2015-12-13 13:41:43 +0200 | [diff] [blame] | 2013 | ieee80211_recalc_min_chandef(sta->sdata); |
Ayala Beker | 52cfa1d | 2016-03-17 15:41:39 +0200 | [diff] [blame] | 2014 | if (!sta->sta.support_p2p_ps) |
| 2015 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); |
Ilan Peer | a7201a6 | 2015-12-13 13:41:43 +0200 | [diff] [blame] | 2016 | } |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 2017 | break; |
| 2018 | case IEEE80211_STA_ASSOC: |
| 2019 | if (sta->sta_state == IEEE80211_STA_AUTH) { |
| 2020 | set_bit(WLAN_STA_ASSOC, &sta->_flags); |
Ben Greear | 9cf0233 | 2019-08-09 11:00:01 -0700 | [diff] [blame] | 2021 | sta->assoc_at = ktime_get_boottime_ns(); |
Ilan Peer | a7201a6 | 2015-12-13 13:41:43 +0200 | [diff] [blame] | 2022 | ieee80211_recalc_min_chandef(sta->sdata); |
Ayala Beker | 52cfa1d | 2016-03-17 15:41:39 +0200 | [diff] [blame] | 2023 | if (!sta->sta.support_p2p_ps) |
| 2024 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 2025 | } else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
Michael Braun | 72f15d5 | 2016-10-10 19:12:21 +0200 | [diff] [blame] | 2026 | ieee80211_vif_dec_num_mcast(sta->sdata); |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 2027 | clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
Johannes Berg | 17c18bf | 2015-03-21 15:25:43 +0100 | [diff] [blame] | 2028 | ieee80211_clear_fast_xmit(sta); |
Johannes Berg | 49ddf8e | 2016-03-31 20:02:10 +0300 | [diff] [blame] | 2029 | ieee80211_clear_fast_rx(sta); |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 2030 | } |
| 2031 | break; |
| 2032 | case IEEE80211_STA_AUTHORIZED: |
| 2033 | if (sta->sta_state == IEEE80211_STA_ASSOC) { |
Michael Braun | 72f15d5 | 2016-10-10 19:12:21 +0200 | [diff] [blame] | 2034 | ieee80211_vif_inc_num_mcast(sta->sdata); |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 2035 | set_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
Johannes Berg | 17c18bf | 2015-03-21 15:25:43 +0100 | [diff] [blame] | 2036 | ieee80211_check_fast_xmit(sta); |
Johannes Berg | 49ddf8e | 2016-03-31 20:02:10 +0300 | [diff] [blame] | 2037 | ieee80211_check_fast_rx(sta); |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 2038 | } |
Jouni Malinen | 3e49317 | 2019-09-11 16:03:05 +0300 | [diff] [blame] | 2039 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
| 2040 | sta->sdata->vif.type == NL80211_IFTYPE_AP) |
| 2041 | cfg80211_send_layer2_update(sta->sdata->dev, |
| 2042 | sta->sta.addr); |
Johannes Berg | f09603a | 2012-01-20 13:55:21 +0100 | [diff] [blame] | 2043 | break; |
| 2044 | default: |
| 2045 | break; |
| 2046 | } |
| 2047 | |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 2048 | sta->sta_state = new_state; |
| 2049 | |
| 2050 | return 0; |
| 2051 | } |
Emmanuel Grumbach | 687da13 | 2013-10-01 16:45:43 +0300 | [diff] [blame] | 2052 | |
| 2053 | u8 sta_info_tx_streams(struct sta_info *sta) |
| 2054 | { |
| 2055 | struct ieee80211_sta_ht_cap *ht_cap = &sta->sta.ht_cap; |
| 2056 | u8 rx_streams; |
| 2057 | |
| 2058 | if (!sta->sta.ht_cap.ht_supported) |
| 2059 | return 1; |
| 2060 | |
| 2061 | if (sta->sta.vht_cap.vht_supported) { |
| 2062 | int i; |
| 2063 | u16 tx_mcs_map = |
| 2064 | le16_to_cpu(sta->sta.vht_cap.vht_mcs.tx_mcs_map); |
| 2065 | |
| 2066 | for (i = 7; i >= 0; i--) |
| 2067 | if ((tx_mcs_map & (0x3 << (i * 2))) != |
| 2068 | IEEE80211_VHT_MCS_NOT_SUPPORTED) |
| 2069 | return i + 1; |
| 2070 | } |
| 2071 | |
| 2072 | if (ht_cap->mcs.rx_mask[3]) |
| 2073 | rx_streams = 4; |
| 2074 | else if (ht_cap->mcs.rx_mask[2]) |
| 2075 | rx_streams = 3; |
| 2076 | else if (ht_cap->mcs.rx_mask[1]) |
| 2077 | rx_streams = 2; |
| 2078 | else |
| 2079 | rx_streams = 1; |
| 2080 | |
| 2081 | if (!(ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_RX_DIFF)) |
| 2082 | return rx_streams; |
| 2083 | |
| 2084 | return ((ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) |
| 2085 | >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT) + 1; |
| 2086 | } |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2087 | |
Johannes Berg | c9c5962 | 2016-03-31 20:02:11 +0300 | [diff] [blame] | 2088 | static struct ieee80211_sta_rx_stats * |
| 2089 | sta_get_last_rx_stats(struct sta_info *sta) |
| 2090 | { |
| 2091 | struct ieee80211_sta_rx_stats *stats = &sta->rx_stats; |
| 2092 | struct ieee80211_local *local = sta->local; |
| 2093 | int cpu; |
| 2094 | |
| 2095 | if (!ieee80211_hw_check(&local->hw, USES_RSS)) |
| 2096 | return stats; |
| 2097 | |
| 2098 | for_each_possible_cpu(cpu) { |
| 2099 | struct ieee80211_sta_rx_stats *cpustats; |
| 2100 | |
| 2101 | cpustats = per_cpu_ptr(sta->pcpu_rx_stats, cpu); |
| 2102 | |
| 2103 | if (time_after(cpustats->last_rx, stats->last_rx)) |
| 2104 | stats = cpustats; |
| 2105 | } |
| 2106 | |
| 2107 | return stats; |
| 2108 | } |
| 2109 | |
Luca Coelho | 41cbb0f | 2018-06-09 09:14:44 +0300 | [diff] [blame] | 2110 | static void sta_stats_decode_rate(struct ieee80211_local *local, u32 rate, |
Johannes Berg | 4f6b1b3 | 2016-03-31 20:02:08 +0300 | [diff] [blame] | 2111 | struct rate_info *rinfo) |
Johannes Berg | fbd6ff5 | 2015-10-14 18:31:30 +0200 | [diff] [blame] | 2112 | { |
Johannes Berg | dcba665 | 2017-04-26 14:51:20 +0200 | [diff] [blame] | 2113 | rinfo->bw = STA_STATS_GET(BW, rate); |
Johannes Berg | fbd6ff5 | 2015-10-14 18:31:30 +0200 | [diff] [blame] | 2114 | |
Johannes Berg | dcba665 | 2017-04-26 14:51:20 +0200 | [diff] [blame] | 2115 | switch (STA_STATS_GET(TYPE, rate)) { |
Johannes Berg | 7f406cd | 2017-02-15 15:02:09 +0100 | [diff] [blame] | 2116 | case STA_STATS_RATE_TYPE_VHT: |
Johannes Berg | 4f6b1b3 | 2016-03-31 20:02:08 +0300 | [diff] [blame] | 2117 | rinfo->flags = RATE_INFO_FLAGS_VHT_MCS; |
Johannes Berg | dcba665 | 2017-04-26 14:51:20 +0200 | [diff] [blame] | 2118 | rinfo->mcs = STA_STATS_GET(VHT_MCS, rate); |
| 2119 | rinfo->nss = STA_STATS_GET(VHT_NSS, rate); |
| 2120 | if (STA_STATS_GET(SGI, rate)) |
| 2121 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; |
Johannes Berg | 7f406cd | 2017-02-15 15:02:09 +0100 | [diff] [blame] | 2122 | break; |
| 2123 | case STA_STATS_RATE_TYPE_HT: |
Johannes Berg | 4f6b1b3 | 2016-03-31 20:02:08 +0300 | [diff] [blame] | 2124 | rinfo->flags = RATE_INFO_FLAGS_MCS; |
Johannes Berg | dcba665 | 2017-04-26 14:51:20 +0200 | [diff] [blame] | 2125 | rinfo->mcs = STA_STATS_GET(HT_MCS, rate); |
| 2126 | if (STA_STATS_GET(SGI, rate)) |
| 2127 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; |
Johannes Berg | 7f406cd | 2017-02-15 15:02:09 +0100 | [diff] [blame] | 2128 | break; |
| 2129 | case STA_STATS_RATE_TYPE_LEGACY: { |
Johannes Berg | fbd6ff5 | 2015-10-14 18:31:30 +0200 | [diff] [blame] | 2130 | struct ieee80211_supported_band *sband; |
Johannes Berg | fbd6ff5 | 2015-10-14 18:31:30 +0200 | [diff] [blame] | 2131 | u16 brate; |
Johannes Berg | 4f6b1b3 | 2016-03-31 20:02:08 +0300 | [diff] [blame] | 2132 | unsigned int shift; |
Johannes Berg | dcba665 | 2017-04-26 14:51:20 +0200 | [diff] [blame] | 2133 | int band = STA_STATS_GET(LEGACY_BAND, rate); |
| 2134 | int rate_idx = STA_STATS_GET(LEGACY_IDX, rate); |
Johannes Berg | fbd6ff5 | 2015-10-14 18:31:30 +0200 | [diff] [blame] | 2135 | |
Johannes Berg | dcba665 | 2017-04-26 14:51:20 +0200 | [diff] [blame] | 2136 | sband = local->hw.wiphy->bands[band]; |
Thomas Pedersen | 8b783d1 | 2020-10-05 09:45:21 -0700 | [diff] [blame] | 2137 | |
| 2138 | if (WARN_ON_ONCE(!sband->bitrates)) |
| 2139 | break; |
| 2140 | |
Johannes Berg | dcba665 | 2017-04-26 14:51:20 +0200 | [diff] [blame] | 2141 | brate = sband->bitrates[rate_idx].bitrate; |
Johannes Berg | 4f6b1b3 | 2016-03-31 20:02:08 +0300 | [diff] [blame] | 2142 | if (rinfo->bw == RATE_INFO_BW_5) |
| 2143 | shift = 2; |
| 2144 | else if (rinfo->bw == RATE_INFO_BW_10) |
| 2145 | shift = 1; |
| 2146 | else |
| 2147 | shift = 0; |
Johannes Berg | fbd6ff5 | 2015-10-14 18:31:30 +0200 | [diff] [blame] | 2148 | rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); |
Johannes Berg | 7f406cd | 2017-02-15 15:02:09 +0100 | [diff] [blame] | 2149 | break; |
| 2150 | } |
Luca Coelho | 41cbb0f | 2018-06-09 09:14:44 +0300 | [diff] [blame] | 2151 | case STA_STATS_RATE_TYPE_HE: |
| 2152 | rinfo->flags = RATE_INFO_FLAGS_HE_MCS; |
| 2153 | rinfo->mcs = STA_STATS_GET(HE_MCS, rate); |
| 2154 | rinfo->nss = STA_STATS_GET(HE_NSS, rate); |
| 2155 | rinfo->he_gi = STA_STATS_GET(HE_GI, rate); |
| 2156 | rinfo->he_ru_alloc = STA_STATS_GET(HE_RU, rate); |
| 2157 | rinfo->he_dcm = STA_STATS_GET(HE_DCM, rate); |
| 2158 | break; |
Johannes Berg | fbd6ff5 | 2015-10-14 18:31:30 +0200 | [diff] [blame] | 2159 | } |
Johannes Berg | 4f6b1b3 | 2016-03-31 20:02:08 +0300 | [diff] [blame] | 2160 | } |
Johannes Berg | fbd6ff5 | 2015-10-14 18:31:30 +0200 | [diff] [blame] | 2161 | |
Ben Greear | a17d93f | 2016-12-14 11:30:38 -0800 | [diff] [blame] | 2162 | static int sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) |
Johannes Berg | 4f6b1b3 | 2016-03-31 20:02:08 +0300 | [diff] [blame] | 2163 | { |
Mark Rutland | 6aa7de0 | 2017-10-23 14:07:29 -0700 | [diff] [blame] | 2164 | u16 rate = READ_ONCE(sta_get_last_rx_stats(sta)->last_rate); |
Johannes Berg | 4f6b1b3 | 2016-03-31 20:02:08 +0300 | [diff] [blame] | 2165 | |
| 2166 | if (rate == STA_STATS_RATE_INVALID) |
Ben Greear | a17d93f | 2016-12-14 11:30:38 -0800 | [diff] [blame] | 2167 | return -EINVAL; |
| 2168 | |
| 2169 | sta_stats_decode_rate(sta->local, rate, rinfo); |
| 2170 | return 0; |
Johannes Berg | fbd6ff5 | 2015-10-14 18:31:30 +0200 | [diff] [blame] | 2171 | } |
| 2172 | |
Seevalamuthu Mariappan | b255b72 | 2020-03-18 15:45:55 +0530 | [diff] [blame] | 2173 | static inline u64 sta_get_tidstats_msdu(struct ieee80211_sta_rx_stats *rxstats, |
| 2174 | int tid) |
| 2175 | { |
| 2176 | unsigned int start; |
| 2177 | u64 value; |
| 2178 | |
| 2179 | do { |
| 2180 | start = u64_stats_fetch_begin(&rxstats->syncp); |
| 2181 | value = rxstats->msdu[tid]; |
| 2182 | } while (u64_stats_fetch_retry(&rxstats->syncp, start)); |
| 2183 | |
| 2184 | return value; |
| 2185 | } |
| 2186 | |
Johannes Berg | 0f9c5a6 | 2016-03-31 20:02:09 +0300 | [diff] [blame] | 2187 | static void sta_set_tidstats(struct sta_info *sta, |
| 2188 | struct cfg80211_tid_stats *tidstats, |
| 2189 | int tid) |
| 2190 | { |
| 2191 | struct ieee80211_local *local = sta->local; |
Seevalamuthu Mariappan | b255b72 | 2020-03-18 15:45:55 +0530 | [diff] [blame] | 2192 | int cpu; |
Johannes Berg | 0f9c5a6 | 2016-03-31 20:02:09 +0300 | [diff] [blame] | 2193 | |
| 2194 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_RX_MSDU))) { |
Seevalamuthu Mariappan | b255b72 | 2020-03-18 15:45:55 +0530 | [diff] [blame] | 2195 | if (!ieee80211_hw_check(&local->hw, USES_RSS)) |
| 2196 | tidstats->rx_msdu += |
| 2197 | sta_get_tidstats_msdu(&sta->rx_stats, tid); |
Johannes Berg | 0f9c5a6 | 2016-03-31 20:02:09 +0300 | [diff] [blame] | 2198 | |
Seevalamuthu Mariappan | b255b72 | 2020-03-18 15:45:55 +0530 | [diff] [blame] | 2199 | if (sta->pcpu_rx_stats) { |
| 2200 | for_each_possible_cpu(cpu) { |
| 2201 | struct ieee80211_sta_rx_stats *cpurxs; |
| 2202 | |
| 2203 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); |
| 2204 | tidstats->rx_msdu += |
| 2205 | sta_get_tidstats_msdu(cpurxs, tid); |
| 2206 | } |
| 2207 | } |
Johannes Berg | 0f9c5a6 | 2016-03-31 20:02:09 +0300 | [diff] [blame] | 2208 | |
| 2209 | tidstats->filled |= BIT(NL80211_TID_STATS_RX_MSDU); |
| 2210 | } |
| 2211 | |
| 2212 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU))) { |
| 2213 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU); |
| 2214 | tidstats->tx_msdu = sta->tx_stats.msdu[tid]; |
| 2215 | } |
| 2216 | |
| 2217 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_RETRIES)) && |
| 2218 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
| 2219 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_RETRIES); |
| 2220 | tidstats->tx_msdu_retries = sta->status_stats.msdu_retries[tid]; |
| 2221 | } |
| 2222 | |
| 2223 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_FAILED)) && |
| 2224 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
| 2225 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_FAILED); |
| 2226 | tidstats->tx_msdu_failed = sta->status_stats.msdu_failed[tid]; |
| 2227 | } |
Toke Høiland-Jørgensen | 2fe4a29 | 2018-05-08 13:03:50 +0200 | [diff] [blame] | 2228 | |
| 2229 | if (local->ops->wake_tx_queue && tid < IEEE80211_NUM_TIDS) { |
| 2230 | spin_lock_bh(&local->fq.lock); |
| 2231 | rcu_read_lock(); |
| 2232 | |
| 2233 | tidstats->filled |= BIT(NL80211_TID_STATS_TXQ_STATS); |
| 2234 | ieee80211_fill_txq_stats(&tidstats->txq_stats, |
| 2235 | to_txq_info(sta->sta.txq[tid])); |
| 2236 | |
| 2237 | rcu_read_unlock(); |
| 2238 | spin_unlock_bh(&local->fq.lock); |
| 2239 | } |
Johannes Berg | 0f9c5a6 | 2016-03-31 20:02:09 +0300 | [diff] [blame] | 2240 | } |
| 2241 | |
Johannes Berg | c9c5962 | 2016-03-31 20:02:11 +0300 | [diff] [blame] | 2242 | static inline u64 sta_get_stats_bytes(struct ieee80211_sta_rx_stats *rxstats) |
| 2243 | { |
| 2244 | unsigned int start; |
| 2245 | u64 value; |
| 2246 | |
| 2247 | do { |
| 2248 | start = u64_stats_fetch_begin(&rxstats->syncp); |
| 2249 | value = rxstats->bytes; |
| 2250 | } while (u64_stats_fetch_retry(&rxstats->syncp, start)); |
| 2251 | |
| 2252 | return value; |
| 2253 | } |
| 2254 | |
Johannes Berg | 0fdf149 | 2018-05-18 11:40:44 +0200 | [diff] [blame] | 2255 | void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo, |
| 2256 | bool tidstats) |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2257 | { |
| 2258 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
| 2259 | struct ieee80211_local *local = sdata->local; |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2260 | u32 thr = 0; |
Johannes Berg | c9c5962 | 2016-03-31 20:02:11 +0300 | [diff] [blame] | 2261 | int i, ac, cpu; |
| 2262 | struct ieee80211_sta_rx_stats *last_rxstats; |
| 2263 | |
| 2264 | last_rxstats = sta_get_last_rx_stats(sta); |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2265 | |
| 2266 | sinfo->generation = sdata->local->sta_generation; |
| 2267 | |
Johannes Berg | 225b818 | 2015-01-21 21:09:02 +0100 | [diff] [blame] | 2268 | /* do before driver, so beacon filtering drivers have a |
| 2269 | * chance to e.g. just add the number of filtered beacons |
| 2270 | * (or just modify the value entirely, of course) |
| 2271 | */ |
| 2272 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
| 2273 | sinfo->rx_beacon = sdata->u.mgd.count_beacon_signal; |
| 2274 | |
Johannes Berg | 2b9a7e1 | 2014-11-17 11:35:23 +0100 | [diff] [blame] | 2275 | drv_sta_statistics(local, sdata, &sta->sta, sinfo); |
| 2276 | |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2277 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_INACTIVE_TIME) | |
| 2278 | BIT_ULL(NL80211_STA_INFO_STA_FLAGS) | |
| 2279 | BIT_ULL(NL80211_STA_INFO_BSS_PARAM) | |
| 2280 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TIME) | |
Ben Greear | 9cf0233 | 2019-08-09 11:00:01 -0700 | [diff] [blame] | 2281 | BIT_ULL(NL80211_STA_INFO_ASSOC_AT_BOOTTIME) | |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2282 | BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC); |
Johannes Berg | 976bd9e | 2015-10-16 17:18:11 +0200 | [diff] [blame] | 2283 | |
| 2284 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
| 2285 | sinfo->beacon_loss_count = sdata->u.mgd.beacon_loss_count; |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2286 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_LOSS); |
Johannes Berg | 976bd9e | 2015-10-16 17:18:11 +0200 | [diff] [blame] | 2287 | } |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2288 | |
Arnd Bergmann | 84b0060 | 2015-09-30 13:26:36 +0200 | [diff] [blame] | 2289 | sinfo->connected_time = ktime_get_seconds() - sta->last_connected; |
Ben Greear | 9cf0233 | 2019-08-09 11:00:01 -0700 | [diff] [blame] | 2290 | sinfo->assoc_at = sta->assoc_at; |
Johannes Berg | e5a9f8d | 2015-10-16 17:54:47 +0200 | [diff] [blame] | 2291 | sinfo->inactive_time = |
Johannes Berg | b8da6b6 | 2016-03-31 20:02:07 +0300 | [diff] [blame] | 2292 | jiffies_to_msecs(jiffies - ieee80211_sta_last_active(sta)); |
Johannes Berg | 2b9a7e1 | 2014-11-17 11:35:23 +0100 | [diff] [blame] | 2293 | |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2294 | if (!(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES64) | |
| 2295 | BIT_ULL(NL80211_STA_INFO_TX_BYTES)))) { |
Johannes Berg | 2b9a7e1 | 2014-11-17 11:35:23 +0100 | [diff] [blame] | 2296 | sinfo->tx_bytes = 0; |
| 2297 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) |
Johannes Berg | e5a9f8d | 2015-10-16 17:54:47 +0200 | [diff] [blame] | 2298 | sinfo->tx_bytes += sta->tx_stats.bytes[ac]; |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2299 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BYTES64); |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2300 | } |
Johannes Berg | 2b9a7e1 | 2014-11-17 11:35:23 +0100 | [diff] [blame] | 2301 | |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2302 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_PACKETS))) { |
Johannes Berg | 2b9a7e1 | 2014-11-17 11:35:23 +0100 | [diff] [blame] | 2303 | sinfo->tx_packets = 0; |
| 2304 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) |
Johannes Berg | e5a9f8d | 2015-10-16 17:54:47 +0200 | [diff] [blame] | 2305 | sinfo->tx_packets += sta->tx_stats.packets[ac]; |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2306 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_PACKETS); |
Johannes Berg | 2b9a7e1 | 2014-11-17 11:35:23 +0100 | [diff] [blame] | 2307 | } |
| 2308 | |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2309 | if (!(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES64) | |
| 2310 | BIT_ULL(NL80211_STA_INFO_RX_BYTES)))) { |
Seevalamuthu Mariappan | b255b72 | 2020-03-18 15:45:55 +0530 | [diff] [blame] | 2311 | if (!ieee80211_hw_check(&local->hw, USES_RSS)) |
| 2312 | sinfo->rx_bytes += sta_get_stats_bytes(&sta->rx_stats); |
Johannes Berg | 0f9c5a6 | 2016-03-31 20:02:09 +0300 | [diff] [blame] | 2313 | |
Johannes Berg | c9c5962 | 2016-03-31 20:02:11 +0300 | [diff] [blame] | 2314 | if (sta->pcpu_rx_stats) { |
| 2315 | for_each_possible_cpu(cpu) { |
| 2316 | struct ieee80211_sta_rx_stats *cpurxs; |
| 2317 | |
| 2318 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); |
| 2319 | sinfo->rx_bytes += sta_get_stats_bytes(cpurxs); |
| 2320 | } |
| 2321 | } |
| 2322 | |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2323 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BYTES64); |
Johannes Berg | 2b9a7e1 | 2014-11-17 11:35:23 +0100 | [diff] [blame] | 2324 | } |
| 2325 | |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2326 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_PACKETS))) { |
Johannes Berg | e5a9f8d | 2015-10-16 17:54:47 +0200 | [diff] [blame] | 2327 | sinfo->rx_packets = sta->rx_stats.packets; |
Johannes Berg | c9c5962 | 2016-03-31 20:02:11 +0300 | [diff] [blame] | 2328 | if (sta->pcpu_rx_stats) { |
| 2329 | for_each_possible_cpu(cpu) { |
| 2330 | struct ieee80211_sta_rx_stats *cpurxs; |
| 2331 | |
| 2332 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); |
| 2333 | sinfo->rx_packets += cpurxs->packets; |
| 2334 | } |
| 2335 | } |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2336 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_PACKETS); |
Johannes Berg | 2b9a7e1 | 2014-11-17 11:35:23 +0100 | [diff] [blame] | 2337 | } |
| 2338 | |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2339 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_RETRIES))) { |
Johannes Berg | e5a9f8d | 2015-10-16 17:54:47 +0200 | [diff] [blame] | 2340 | sinfo->tx_retries = sta->status_stats.retry_count; |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2341 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_RETRIES); |
Johannes Berg | 2b9a7e1 | 2014-11-17 11:35:23 +0100 | [diff] [blame] | 2342 | } |
| 2343 | |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2344 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED))) { |
Johannes Berg | e5a9f8d | 2015-10-16 17:54:47 +0200 | [diff] [blame] | 2345 | sinfo->tx_failed = sta->status_stats.retry_failed; |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2346 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_FAILED); |
Johannes Berg | 2b9a7e1 | 2014-11-17 11:35:23 +0100 | [diff] [blame] | 2347 | } |
| 2348 | |
Toke Høiland-Jørgensen | b4809e9 | 2018-12-18 17:02:08 -0800 | [diff] [blame] | 2349 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_DURATION))) { |
| 2350 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) |
| 2351 | sinfo->rx_duration += sta->airtime[ac].rx_airtime; |
| 2352 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_DURATION); |
| 2353 | } |
| 2354 | |
| 2355 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_DURATION))) { |
| 2356 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) |
| 2357 | sinfo->tx_duration += sta->airtime[ac].tx_airtime; |
| 2358 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_DURATION); |
| 2359 | } |
| 2360 | |
| 2361 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT))) { |
| 2362 | sinfo->airtime_weight = sta->airtime_weight; |
| 2363 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT); |
| 2364 | } |
| 2365 | |
Johannes Berg | e5a9f8d | 2015-10-16 17:54:47 +0200 | [diff] [blame] | 2366 | sinfo->rx_dropped_misc = sta->rx_stats.dropped; |
Johannes Berg | c9c5962 | 2016-03-31 20:02:11 +0300 | [diff] [blame] | 2367 | if (sta->pcpu_rx_stats) { |
| 2368 | for_each_possible_cpu(cpu) { |
| 2369 | struct ieee80211_sta_rx_stats *cpurxs; |
| 2370 | |
| 2371 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); |
Johannes Berg | e165bc0 | 2017-06-01 21:26:03 +0200 | [diff] [blame] | 2372 | sinfo->rx_dropped_misc += cpurxs->dropped; |
Johannes Berg | c9c5962 | 2016-03-31 20:02:11 +0300 | [diff] [blame] | 2373 | } |
| 2374 | } |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2375 | |
Johannes Berg | 225b818 | 2015-01-21 21:09:02 +0100 | [diff] [blame] | 2376 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
| 2377 | !(sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)) { |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2378 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX) | |
| 2379 | BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); |
Johannes Berg | 225b818 | 2015-01-21 21:09:02 +0100 | [diff] [blame] | 2380 | sinfo->rx_beacon_signal_avg = ieee80211_ave_rssi(&sdata->vif); |
| 2381 | } |
| 2382 | |
Johannes Berg | 30686bf | 2015-06-02 21:39:54 +0200 | [diff] [blame] | 2383 | if (ieee80211_hw_check(&sta->local->hw, SIGNAL_DBM) || |
| 2384 | ieee80211_hw_check(&sta->local->hw, SIGNAL_UNSPEC)) { |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2385 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_SIGNAL))) { |
Johannes Berg | c9c5962 | 2016-03-31 20:02:11 +0300 | [diff] [blame] | 2386 | sinfo->signal = (s8)last_rxstats->last_signal; |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2387 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL); |
Johannes Berg | 2b9a7e1 | 2014-11-17 11:35:23 +0100 | [diff] [blame] | 2388 | } |
| 2389 | |
Johannes Berg | c9c5962 | 2016-03-31 20:02:11 +0300 | [diff] [blame] | 2390 | if (!sta->pcpu_rx_stats && |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2391 | !(sinfo->filled & BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG))) { |
Johannes Berg | 40d9a38 | 2015-07-13 12:26:46 +0200 | [diff] [blame] | 2392 | sinfo->signal_avg = |
Johannes Berg | 0be6ed1 | 2016-03-31 20:02:05 +0300 | [diff] [blame] | 2393 | -ewma_signal_read(&sta->rx_stats_avg.signal); |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2394 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); |
Johannes Berg | 2b9a7e1 | 2014-11-17 11:35:23 +0100 | [diff] [blame] | 2395 | } |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2396 | } |
Johannes Berg | 2b9a7e1 | 2014-11-17 11:35:23 +0100 | [diff] [blame] | 2397 | |
Johannes Berg | c9c5962 | 2016-03-31 20:02:11 +0300 | [diff] [blame] | 2398 | /* for the average - if pcpu_rx_stats isn't set - rxstats must point to |
| 2399 | * the sta->rx_stats struct, so the check here is fine with and without |
| 2400 | * pcpu statistics |
| 2401 | */ |
| 2402 | if (last_rxstats->chains && |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2403 | !(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL) | |
| 2404 | BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)))) { |
| 2405 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL); |
Johannes Berg | c9c5962 | 2016-03-31 20:02:11 +0300 | [diff] [blame] | 2406 | if (!sta->pcpu_rx_stats) |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2407 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG); |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2408 | |
Johannes Berg | c9c5962 | 2016-03-31 20:02:11 +0300 | [diff] [blame] | 2409 | sinfo->chains = last_rxstats->chains; |
| 2410 | |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2411 | for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { |
Johannes Berg | e5a9f8d | 2015-10-16 17:54:47 +0200 | [diff] [blame] | 2412 | sinfo->chain_signal[i] = |
Johannes Berg | c9c5962 | 2016-03-31 20:02:11 +0300 | [diff] [blame] | 2413 | last_rxstats->chain_signal_last[i]; |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2414 | sinfo->chain_signal_avg[i] = |
Johannes Berg | 0be6ed1 | 2016-03-31 20:02:05 +0300 | [diff] [blame] | 2415 | -ewma_signal_read(&sta->rx_stats_avg.chain_signal[i]); |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2416 | } |
| 2417 | } |
| 2418 | |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2419 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) { |
Johannes Berg | e5a9f8d | 2015-10-16 17:54:47 +0200 | [diff] [blame] | 2420 | sta_set_rate_info_tx(sta, &sta->tx_stats.last_rate, |
| 2421 | &sinfo->txrate); |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2422 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); |
Johannes Berg | 2b9a7e1 | 2014-11-17 11:35:23 +0100 | [diff] [blame] | 2423 | } |
| 2424 | |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2425 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE))) { |
Ben Greear | a17d93f | 2016-12-14 11:30:38 -0800 | [diff] [blame] | 2426 | if (sta_set_rate_info_rx(sta, &sinfo->rxrate) == 0) |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2427 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BITRATE); |
Johannes Berg | 2b9a7e1 | 2014-11-17 11:35:23 +0100 | [diff] [blame] | 2428 | } |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2429 | |
Johannes Berg | 0fdf149 | 2018-05-18 11:40:44 +0200 | [diff] [blame] | 2430 | if (tidstats && !cfg80211_sinfo_alloc_tid_stats(sinfo, GFP_KERNEL)) { |
Johannes Berg | 6af8354 | 2018-11-09 11:13:15 +0100 | [diff] [blame] | 2431 | for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) |
| 2432 | sta_set_tidstats(sta, &sinfo->pertid[i], i); |
Johannes Berg | 79c892b | 2014-11-21 14:26:31 +0100 | [diff] [blame] | 2433 | } |
| 2434 | |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2435 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
| 2436 | #ifdef CONFIG_MAC80211_MESH |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2437 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_LLID) | |
| 2438 | BIT_ULL(NL80211_STA_INFO_PLID) | |
| 2439 | BIT_ULL(NL80211_STA_INFO_PLINK_STATE) | |
| 2440 | BIT_ULL(NL80211_STA_INFO_LOCAL_PM) | |
| 2441 | BIT_ULL(NL80211_STA_INFO_PEER_PM) | |
Bob Copeland | dbdaee7 | 2018-10-25 15:48:53 -0400 | [diff] [blame] | 2442 | BIT_ULL(NL80211_STA_INFO_NONPEER_PM) | |
Markus Theil | 1303a51 | 2020-06-11 16:02:38 +0200 | [diff] [blame] | 2443 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TO_GATE) | |
| 2444 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TO_AS); |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2445 | |
Johannes Berg | 433f5bc | 2015-06-17 10:31:00 +0200 | [diff] [blame] | 2446 | sinfo->llid = sta->mesh->llid; |
| 2447 | sinfo->plid = sta->mesh->plid; |
| 2448 | sinfo->plink_state = sta->mesh->plink_state; |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2449 | if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2450 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_T_OFFSET); |
Johannes Berg | 433f5bc | 2015-06-17 10:31:00 +0200 | [diff] [blame] | 2451 | sinfo->t_offset = sta->mesh->t_offset; |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2452 | } |
Johannes Berg | 433f5bc | 2015-06-17 10:31:00 +0200 | [diff] [blame] | 2453 | sinfo->local_pm = sta->mesh->local_pm; |
| 2454 | sinfo->peer_pm = sta->mesh->peer_pm; |
| 2455 | sinfo->nonpeer_pm = sta->mesh->nonpeer_pm; |
Bob Copeland | dbdaee7 | 2018-10-25 15:48:53 -0400 | [diff] [blame] | 2456 | sinfo->connected_to_gate = sta->mesh->connected_to_gate; |
Markus Theil | 1303a51 | 2020-06-11 16:02:38 +0200 | [diff] [blame] | 2457 | sinfo->connected_to_as = sta->mesh->connected_to_as; |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2458 | #endif |
| 2459 | } |
| 2460 | |
| 2461 | sinfo->bss_param.flags = 0; |
| 2462 | if (sdata->vif.bss_conf.use_cts_prot) |
| 2463 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; |
| 2464 | if (sdata->vif.bss_conf.use_short_preamble) |
| 2465 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; |
| 2466 | if (sdata->vif.bss_conf.use_short_slot) |
| 2467 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; |
Emmanuel Grumbach | 785e21a | 2014-09-03 15:25:04 +0300 | [diff] [blame] | 2468 | sinfo->bss_param.dtim_period = sdata->vif.bss_conf.dtim_period; |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2469 | sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; |
| 2470 | |
| 2471 | sinfo->sta_flags.set = 0; |
| 2472 | sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | |
| 2473 | BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | |
| 2474 | BIT(NL80211_STA_FLAG_WME) | |
| 2475 | BIT(NL80211_STA_FLAG_MFP) | |
| 2476 | BIT(NL80211_STA_FLAG_AUTHENTICATED) | |
| 2477 | BIT(NL80211_STA_FLAG_ASSOCIATED) | |
| 2478 | BIT(NL80211_STA_FLAG_TDLS_PEER); |
| 2479 | if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) |
| 2480 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); |
| 2481 | if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) |
| 2482 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); |
Johannes Berg | a74a8c8 | 2014-07-22 14:50:47 +0200 | [diff] [blame] | 2483 | if (sta->sta.wme) |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2484 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); |
| 2485 | if (test_sta_flag(sta, WLAN_STA_MFP)) |
| 2486 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); |
| 2487 | if (test_sta_flag(sta, WLAN_STA_AUTH)) |
| 2488 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); |
| 2489 | if (test_sta_flag(sta, WLAN_STA_ASSOC)) |
| 2490 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); |
| 2491 | if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) |
| 2492 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); |
| 2493 | |
Maxim Altshul | 3b17fbf | 2016-07-11 17:15:24 +0300 | [diff] [blame] | 2494 | thr = sta_get_expected_throughput(sta); |
| 2495 | |
| 2496 | if (thr != 0) { |
Omer Efrat | a421775 | 2018-06-17 13:06:25 +0300 | [diff] [blame] | 2497 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_EXPECTED_THROUGHPUT); |
Maxim Altshul | 3b17fbf | 2016-07-11 17:15:24 +0300 | [diff] [blame] | 2498 | sinfo->expected_throughput = thr; |
| 2499 | } |
Venkateswara Naralasetty | a78b26f | 2018-02-13 11:04:46 +0530 | [diff] [blame] | 2500 | |
| 2501 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL)) && |
| 2502 | sta->status_stats.ack_signal_filled) { |
| 2503 | sinfo->ack_signal = sta->status_stats.last_ack_signal; |
| 2504 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL); |
| 2505 | } |
Balaji Pothunoori | cc60dbb | 2018-04-16 20:18:41 +0530 | [diff] [blame] | 2506 | |
Balaji Pothunoori | 9c06602 | 2018-07-19 18:56:27 +0530 | [diff] [blame] | 2507 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG)) && |
| 2508 | sta->status_stats.ack_signal_filled) { |
Balaji Pothunoori | cc60dbb | 2018-04-16 20:18:41 +0530 | [diff] [blame] | 2509 | sinfo->avg_ack_signal = |
| 2510 | -(s8)ewma_avg_signal_read( |
| 2511 | &sta->status_stats.avg_ack_signal); |
| 2512 | sinfo->filled |= |
Balaji Pothunoori | 9c06602 | 2018-07-19 18:56:27 +0530 | [diff] [blame] | 2513 | BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG); |
Balaji Pothunoori | cc60dbb | 2018-04-16 20:18:41 +0530 | [diff] [blame] | 2514 | } |
Narayanraddi Masti | ab60633 | 2019-02-07 12:16:05 -0800 | [diff] [blame] | 2515 | |
| 2516 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
| 2517 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_AIRTIME_LINK_METRIC); |
| 2518 | sinfo->airtime_link_metric = |
| 2519 | airtime_link_metric_get(local, sta); |
| 2520 | } |
Maxim Altshul | 3b17fbf | 2016-07-11 17:15:24 +0300 | [diff] [blame] | 2521 | } |
| 2522 | |
| 2523 | u32 sta_get_expected_throughput(struct sta_info *sta) |
| 2524 | { |
| 2525 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
| 2526 | struct ieee80211_local *local = sdata->local; |
| 2527 | struct rate_control_ref *ref = NULL; |
| 2528 | u32 thr = 0; |
| 2529 | |
| 2530 | if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) |
| 2531 | ref = local->rate_ctrl; |
| 2532 | |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2533 | /* check if the driver has a SW RC implementation */ |
| 2534 | if (ref && ref->ops->get_expected_throughput) |
| 2535 | thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv); |
| 2536 | else |
Maxim Altshul | 4fdbc67a | 2016-08-11 13:38:16 +0300 | [diff] [blame] | 2537 | thr = drv_get_expected_throughput(local, sta); |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2538 | |
Maxim Altshul | 3b17fbf | 2016-07-11 17:15:24 +0300 | [diff] [blame] | 2539 | return thr; |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 2540 | } |
Johannes Berg | b8da6b6 | 2016-03-31 20:02:07 +0300 | [diff] [blame] | 2541 | |
| 2542 | unsigned long ieee80211_sta_last_active(struct sta_info *sta) |
| 2543 | { |
Johannes Berg | c9c5962 | 2016-03-31 20:02:11 +0300 | [diff] [blame] | 2544 | struct ieee80211_sta_rx_stats *stats = sta_get_last_rx_stats(sta); |
| 2545 | |
Ahmed Zaki | 285531f | 2019-10-31 06:12:43 -0600 | [diff] [blame] | 2546 | if (!sta->status_stats.last_ack || |
| 2547 | time_after(stats->last_rx, sta->status_stats.last_ack)) |
Johannes Berg | c9c5962 | 2016-03-31 20:02:11 +0300 | [diff] [blame] | 2548 | return stats->last_rx; |
Johannes Berg | b8da6b6 | 2016-03-31 20:02:07 +0300 | [diff] [blame] | 2549 | return sta->status_stats.last_ack; |
| 2550 | } |
Toke Høiland-Jørgensen | 484a54c | 2017-04-06 11:38:26 +0200 | [diff] [blame] | 2551 | |
| 2552 | static void sta_update_codel_params(struct sta_info *sta, u32 thr) |
| 2553 | { |
| 2554 | if (!sta->sdata->local->ops->wake_tx_queue) |
| 2555 | return; |
| 2556 | |
| 2557 | if (thr && thr < STA_SLOW_THRESHOLD * sta->local->num_sta) { |
| 2558 | sta->cparams.target = MS2TIME(50); |
| 2559 | sta->cparams.interval = MS2TIME(300); |
| 2560 | sta->cparams.ecn = false; |
| 2561 | } else { |
| 2562 | sta->cparams.target = MS2TIME(20); |
| 2563 | sta->cparams.interval = MS2TIME(100); |
| 2564 | sta->cparams.ecn = true; |
| 2565 | } |
| 2566 | } |
| 2567 | |
| 2568 | void ieee80211_sta_set_expected_throughput(struct ieee80211_sta *pubsta, |
| 2569 | u32 thr) |
| 2570 | { |
| 2571 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
| 2572 | |
| 2573 | sta_update_codel_params(sta, thr); |
| 2574 | } |