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2605 lines
69 KiB
2605 lines
69 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright 2002-2005, Instant802 Networks, Inc. |
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* Copyright 2006-2007 Jiri Benc <[email protected]> |
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* Copyright 2013-2014 Intel Mobile Communications GmbH |
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* Copyright (C) 2015 - 2017 Intel Deutschland GmbH |
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* Copyright (C) 2018-2021 Intel Corporation |
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*/ |
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|
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/etherdevice.h> |
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#include <linux/netdevice.h> |
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#include <linux/types.h> |
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#include <linux/slab.h> |
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#include <linux/skbuff.h> |
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#include <linux/if_arp.h> |
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#include <linux/timer.h> |
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#include <linux/rtnetlink.h> |
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|
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#include <net/codel.h> |
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#include <net/mac80211.h> |
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#include "ieee80211_i.h" |
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#include "driver-ops.h" |
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#include "rate.h" |
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#include "sta_info.h" |
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#include "debugfs_sta.h" |
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#include "mesh.h" |
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#include "wme.h" |
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|
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/** |
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* DOC: STA information lifetime rules |
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* |
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* STA info structures (&struct sta_info) are managed in a hash table |
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* for faster lookup and a list for iteration. They are managed using |
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* RCU, i.e. access to the list and hash table is protected by RCU. |
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* |
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* Upon allocating a STA info structure with sta_info_alloc(), the caller |
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* owns that structure. It must then insert it into the hash table using |
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* either sta_info_insert() or sta_info_insert_rcu(); only in the latter |
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* case (which acquires an rcu read section but must not be called from |
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* within one) will the pointer still be valid after the call. Note that |
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* the caller may not do much with the STA info before inserting it, in |
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* particular, it may not start any mesh peer link management or add |
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* encryption keys. |
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* |
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* When the insertion fails (sta_info_insert()) returns non-zero), the |
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* structure will have been freed by sta_info_insert()! |
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* |
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* Station entries are added by mac80211 when you establish a link with a |
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* peer. This means different things for the different type of interfaces |
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* we support. For a regular station this mean we add the AP sta when we |
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* receive an association response from the AP. For IBSS this occurs when |
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* get to know about a peer on the same IBSS. For WDS we add the sta for |
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* the peer immediately upon device open. When using AP mode we add stations |
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* for each respective station upon request from userspace through nl80211. |
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* |
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* In order to remove a STA info structure, various sta_info_destroy_*() |
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* calls are available. |
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* |
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* There is no concept of ownership on a STA entry, each structure is |
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* owned by the global hash table/list until it is removed. All users of |
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* the structure need to be RCU protected so that the structure won't be |
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* freed before they are done using it. |
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*/ |
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|
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static const struct rhashtable_params sta_rht_params = { |
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.nelem_hint = 3, /* start small */ |
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.automatic_shrinking = true, |
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.head_offset = offsetof(struct sta_info, hash_node), |
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.key_offset = offsetof(struct sta_info, addr), |
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.key_len = ETH_ALEN, |
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.max_size = CONFIG_MAC80211_STA_HASH_MAX_SIZE, |
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}; |
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|
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/* Caller must hold local->sta_mtx */ |
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static int sta_info_hash_del(struct ieee80211_local *local, |
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struct sta_info *sta) |
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{ |
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return rhltable_remove(&local->sta_hash, &sta->hash_node, |
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sta_rht_params); |
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} |
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|
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static void __cleanup_single_sta(struct sta_info *sta) |
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{ |
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int ac, i; |
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struct tid_ampdu_tx *tid_tx; |
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struct ieee80211_sub_if_data *sdata = sta->sdata; |
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struct ieee80211_local *local = sdata->local; |
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struct ps_data *ps; |
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|
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if (test_sta_flag(sta, WLAN_STA_PS_STA) || |
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test_sta_flag(sta, WLAN_STA_PS_DRIVER) || |
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test_sta_flag(sta, WLAN_STA_PS_DELIVER)) { |
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if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
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sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
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ps = &sdata->bss->ps; |
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else if (ieee80211_vif_is_mesh(&sdata->vif)) |
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ps = &sdata->u.mesh.ps; |
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else |
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return; |
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|
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clear_sta_flag(sta, WLAN_STA_PS_STA); |
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clear_sta_flag(sta, WLAN_STA_PS_DRIVER); |
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clear_sta_flag(sta, WLAN_STA_PS_DELIVER); |
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|
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atomic_dec(&ps->num_sta_ps); |
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} |
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|
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if (sta->sta.txq[0]) { |
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for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { |
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struct txq_info *txqi; |
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|
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if (!sta->sta.txq[i]) |
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continue; |
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|
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txqi = to_txq_info(sta->sta.txq[i]); |
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|
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ieee80211_txq_purge(local, txqi); |
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} |
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} |
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|
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for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
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local->total_ps_buffered -= skb_queue_len(&sta->ps_tx_buf[ac]); |
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ieee80211_purge_tx_queue(&local->hw, &sta->ps_tx_buf[ac]); |
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ieee80211_purge_tx_queue(&local->hw, &sta->tx_filtered[ac]); |
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} |
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|
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if (ieee80211_vif_is_mesh(&sdata->vif)) |
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mesh_sta_cleanup(sta); |
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|
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cancel_work_sync(&sta->drv_deliver_wk); |
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|
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/* |
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* Destroy aggregation state here. It would be nice to wait for the |
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* driver to finish aggregation stop and then clean up, but for now |
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* drivers have to handle aggregation stop being requested, followed |
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* directly by station destruction. |
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*/ |
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for (i = 0; i < IEEE80211_NUM_TIDS; i++) { |
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kfree(sta->ampdu_mlme.tid_start_tx[i]); |
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tid_tx = rcu_dereference_raw(sta->ampdu_mlme.tid_tx[i]); |
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if (!tid_tx) |
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continue; |
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ieee80211_purge_tx_queue(&local->hw, &tid_tx->pending); |
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kfree(tid_tx); |
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} |
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} |
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|
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static void cleanup_single_sta(struct sta_info *sta) |
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{ |
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struct ieee80211_sub_if_data *sdata = sta->sdata; |
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struct ieee80211_local *local = sdata->local; |
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|
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__cleanup_single_sta(sta); |
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sta_info_free(local, sta); |
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} |
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|
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struct rhlist_head *sta_info_hash_lookup(struct ieee80211_local *local, |
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const u8 *addr) |
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{ |
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return rhltable_lookup(&local->sta_hash, addr, sta_rht_params); |
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} |
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|
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/* protected by RCU */ |
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struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
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const u8 *addr) |
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{ |
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struct ieee80211_local *local = sdata->local; |
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struct rhlist_head *tmp; |
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struct sta_info *sta; |
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|
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rcu_read_lock(); |
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for_each_sta_info(local, addr, sta, tmp) { |
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if (sta->sdata == sdata) { |
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rcu_read_unlock(); |
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/* this is safe as the caller must already hold |
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* another rcu read section or the mutex |
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*/ |
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return sta; |
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} |
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} |
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rcu_read_unlock(); |
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return NULL; |
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} |
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|
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/* |
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* Get sta info either from the specified interface |
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* or from one of its vlans |
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*/ |
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struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, |
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const u8 *addr) |
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{ |
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struct ieee80211_local *local = sdata->local; |
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struct rhlist_head *tmp; |
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struct sta_info *sta; |
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|
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rcu_read_lock(); |
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for_each_sta_info(local, addr, sta, tmp) { |
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if (sta->sdata == sdata || |
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(sta->sdata->bss && sta->sdata->bss == sdata->bss)) { |
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rcu_read_unlock(); |
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/* this is safe as the caller must already hold |
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* another rcu read section or the mutex |
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*/ |
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return sta; |
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} |
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} |
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rcu_read_unlock(); |
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return NULL; |
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} |
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|
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struct sta_info *sta_info_get_by_addrs(struct ieee80211_local *local, |
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const u8 *sta_addr, const u8 *vif_addr) |
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{ |
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struct rhlist_head *tmp; |
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struct sta_info *sta; |
|
|
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for_each_sta_info(local, sta_addr, sta, tmp) { |
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if (ether_addr_equal(vif_addr, sta->sdata->vif.addr)) |
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return sta; |
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} |
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|
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return NULL; |
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} |
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|
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struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
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int idx) |
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{ |
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struct ieee80211_local *local = sdata->local; |
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struct sta_info *sta; |
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int i = 0; |
|
|
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list_for_each_entry_rcu(sta, &local->sta_list, list, |
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lockdep_is_held(&local->sta_mtx)) { |
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if (sdata != sta->sdata) |
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continue; |
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if (i < idx) { |
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++i; |
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continue; |
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} |
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return sta; |
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} |
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|
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return NULL; |
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} |
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|
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/** |
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* sta_info_free - free STA |
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* |
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* @local: pointer to the global information |
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* @sta: STA info to free |
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* |
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* This function must undo everything done by sta_info_alloc() |
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* that may happen before sta_info_insert(). It may only be |
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* called when sta_info_insert() has not been attempted (and |
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* if that fails, the station is freed anyway.) |
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*/ |
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void sta_info_free(struct ieee80211_local *local, struct sta_info *sta) |
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{ |
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/* |
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* If we had used sta_info_pre_move_state() then we might not |
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* have gone through the state transitions down again, so do |
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* it here now (and warn if it's inserted). |
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* |
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* This will clear state such as fast TX/RX that may have been |
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* allocated during state transitions. |
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*/ |
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while (sta->sta_state > IEEE80211_STA_NONE) { |
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int ret; |
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|
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WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED)); |
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|
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ret = sta_info_move_state(sta, sta->sta_state - 1); |
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if (WARN_ONCE(ret, "sta_info_move_state() returned %d\n", ret)) |
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break; |
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} |
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|
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if (sta->rate_ctrl) |
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rate_control_free_sta(sta); |
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|
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sta_dbg(sta->sdata, "Destroyed STA %pM\n", sta->sta.addr); |
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|
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if (sta->sta.txq[0]) |
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kfree(to_txq_info(sta->sta.txq[0])); |
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kfree(rcu_dereference_raw(sta->sta.rates)); |
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#ifdef CONFIG_MAC80211_MESH |
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kfree(sta->mesh); |
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#endif |
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free_percpu(sta->pcpu_rx_stats); |
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kfree(sta); |
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} |
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|
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/* Caller must hold local->sta_mtx */ |
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static int sta_info_hash_add(struct ieee80211_local *local, |
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struct sta_info *sta) |
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{ |
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return rhltable_insert(&local->sta_hash, &sta->hash_node, |
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sta_rht_params); |
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} |
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|
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static void sta_deliver_ps_frames(struct work_struct *wk) |
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{ |
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struct sta_info *sta; |
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|
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sta = container_of(wk, struct sta_info, drv_deliver_wk); |
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|
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if (sta->dead) |
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return; |
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|
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local_bh_disable(); |
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if (!test_sta_flag(sta, WLAN_STA_PS_STA)) |
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ieee80211_sta_ps_deliver_wakeup(sta); |
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else if (test_and_clear_sta_flag(sta, WLAN_STA_PSPOLL)) |
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ieee80211_sta_ps_deliver_poll_response(sta); |
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else if (test_and_clear_sta_flag(sta, WLAN_STA_UAPSD)) |
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ieee80211_sta_ps_deliver_uapsd(sta); |
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local_bh_enable(); |
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} |
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|
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static int sta_prepare_rate_control(struct ieee80211_local *local, |
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struct sta_info *sta, gfp_t gfp) |
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{ |
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if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) |
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return 0; |
|
|
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sta->rate_ctrl = local->rate_ctrl; |
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sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl, |
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sta, gfp); |
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if (!sta->rate_ctrl_priv) |
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return -ENOMEM; |
|
|
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return 0; |
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} |
|
|
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struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
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const u8 *addr, gfp_t gfp) |
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{ |
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struct ieee80211_local *local = sdata->local; |
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struct ieee80211_hw *hw = &local->hw; |
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struct sta_info *sta; |
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int i; |
|
|
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sta = kzalloc(sizeof(*sta) + hw->sta_data_size, gfp); |
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if (!sta) |
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return NULL; |
|
|
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if (ieee80211_hw_check(hw, USES_RSS)) { |
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sta->pcpu_rx_stats = |
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alloc_percpu_gfp(struct ieee80211_sta_rx_stats, gfp); |
|
if (!sta->pcpu_rx_stats) |
|
goto free; |
|
} |
|
|
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spin_lock_init(&sta->lock); |
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spin_lock_init(&sta->ps_lock); |
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INIT_WORK(&sta->drv_deliver_wk, sta_deliver_ps_frames); |
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INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work); |
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mutex_init(&sta->ampdu_mlme.mtx); |
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#ifdef CONFIG_MAC80211_MESH |
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if (ieee80211_vif_is_mesh(&sdata->vif)) { |
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sta->mesh = kzalloc(sizeof(*sta->mesh), gfp); |
|
if (!sta->mesh) |
|
goto free; |
|
sta->mesh->plink_sta = sta; |
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spin_lock_init(&sta->mesh->plink_lock); |
|
if (ieee80211_vif_is_mesh(&sdata->vif) && |
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!sdata->u.mesh.user_mpm) |
|
timer_setup(&sta->mesh->plink_timer, mesh_plink_timer, |
|
0); |
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sta->mesh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE; |
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} |
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#endif |
|
|
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memcpy(sta->addr, addr, ETH_ALEN); |
|
memcpy(sta->sta.addr, addr, ETH_ALEN); |
|
sta->sta.max_rx_aggregation_subframes = |
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local->hw.max_rx_aggregation_subframes; |
|
|
|
/* Extended Key ID needs to install keys for keyid 0 and 1 Rx-only. |
|
* The Tx path starts to use a key as soon as the key slot ptk_idx |
|
* references to is not NULL. To not use the initial Rx-only key |
|
* prematurely for Tx initialize ptk_idx to an impossible PTK keyid |
|
* which always will refer to a NULL key. |
|
*/ |
|
BUILD_BUG_ON(ARRAY_SIZE(sta->ptk) <= INVALID_PTK_KEYIDX); |
|
sta->ptk_idx = INVALID_PTK_KEYIDX; |
|
|
|
sta->local = local; |
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sta->sdata = sdata; |
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sta->rx_stats.last_rx = jiffies; |
|
|
|
u64_stats_init(&sta->rx_stats.syncp); |
|
|
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ieee80211_init_frag_cache(&sta->frags); |
|
|
|
sta->sta_state = IEEE80211_STA_NONE; |
|
|
|
/* Mark TID as unreserved */ |
|
sta->reserved_tid = IEEE80211_TID_UNRESERVED; |
|
|
|
sta->last_connected = ktime_get_seconds(); |
|
ewma_signal_init(&sta->rx_stats_avg.signal); |
|
ewma_avg_signal_init(&sta->status_stats.avg_ack_signal); |
|
for (i = 0; i < ARRAY_SIZE(sta->rx_stats_avg.chain_signal); i++) |
|
ewma_signal_init(&sta->rx_stats_avg.chain_signal[i]); |
|
|
|
if (local->ops->wake_tx_queue) { |
|
void *txq_data; |
|
int size = sizeof(struct txq_info) + |
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ALIGN(hw->txq_data_size, sizeof(void *)); |
|
|
|
txq_data = kcalloc(ARRAY_SIZE(sta->sta.txq), size, gfp); |
|
if (!txq_data) |
|
goto free; |
|
|
|
for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { |
|
struct txq_info *txq = txq_data + i * size; |
|
|
|
/* might not do anything for the bufferable MMPDU TXQ */ |
|
ieee80211_txq_init(sdata, sta, txq, i); |
|
} |
|
} |
|
|
|
if (sta_prepare_rate_control(local, sta, gfp)) |
|
goto free_txq; |
|
|
|
|
|
for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
|
skb_queue_head_init(&sta->ps_tx_buf[i]); |
|
skb_queue_head_init(&sta->tx_filtered[i]); |
|
init_airtime_info(&sta->airtime[i], &local->airtime[i]); |
|
} |
|
|
|
for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
|
sta->last_seq_ctrl[i] = cpu_to_le16(USHRT_MAX); |
|
|
|
for (i = 0; i < NUM_NL80211_BANDS; i++) { |
|
u32 mandatory = 0; |
|
int r; |
|
|
|
if (!hw->wiphy->bands[i]) |
|
continue; |
|
|
|
switch (i) { |
|
case NL80211_BAND_2GHZ: |
|
case NL80211_BAND_LC: |
|
/* |
|
* We use both here, even if we cannot really know for |
|
* sure the station will support both, but the only use |
|
* for this is when we don't know anything yet and send |
|
* management frames, and then we'll pick the lowest |
|
* possible rate anyway. |
|
* If we don't include _G here, we cannot find a rate |
|
* in P2P, and thus trigger the WARN_ONCE() in rate.c |
|
*/ |
|
mandatory = IEEE80211_RATE_MANDATORY_B | |
|
IEEE80211_RATE_MANDATORY_G; |
|
break; |
|
case NL80211_BAND_5GHZ: |
|
mandatory = IEEE80211_RATE_MANDATORY_A; |
|
break; |
|
case NL80211_BAND_60GHZ: |
|
WARN_ON(1); |
|
mandatory = 0; |
|
break; |
|
} |
|
|
|
for (r = 0; r < hw->wiphy->bands[i]->n_bitrates; r++) { |
|
struct ieee80211_rate *rate; |
|
|
|
rate = &hw->wiphy->bands[i]->bitrates[r]; |
|
|
|
if (!(rate->flags & mandatory)) |
|
continue; |
|
sta->sta.supp_rates[i] |= BIT(r); |
|
} |
|
} |
|
|
|
sta->sta.smps_mode = IEEE80211_SMPS_OFF; |
|
if (sdata->vif.type == NL80211_IFTYPE_AP || |
|
sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
|
struct ieee80211_supported_band *sband; |
|
u8 smps; |
|
|
|
sband = ieee80211_get_sband(sdata); |
|
if (!sband) |
|
goto free_txq; |
|
|
|
smps = (sband->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >> |
|
IEEE80211_HT_CAP_SM_PS_SHIFT; |
|
/* |
|
* Assume that hostapd advertises our caps in the beacon and |
|
* this is the known_smps_mode for a station that just assciated |
|
*/ |
|
switch (smps) { |
|
case WLAN_HT_SMPS_CONTROL_DISABLED: |
|
sta->known_smps_mode = IEEE80211_SMPS_OFF; |
|
break; |
|
case WLAN_HT_SMPS_CONTROL_STATIC: |
|
sta->known_smps_mode = IEEE80211_SMPS_STATIC; |
|
break; |
|
case WLAN_HT_SMPS_CONTROL_DYNAMIC: |
|
sta->known_smps_mode = IEEE80211_SMPS_DYNAMIC; |
|
break; |
|
default: |
|
WARN_ON(1); |
|
} |
|
} |
|
|
|
sta->sta.max_rc_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_BA; |
|
|
|
sta->cparams.ce_threshold = CODEL_DISABLED_THRESHOLD; |
|
sta->cparams.target = MS2TIME(20); |
|
sta->cparams.interval = MS2TIME(100); |
|
sta->cparams.ecn = true; |
|
sta->cparams.ce_threshold_selector = 0; |
|
sta->cparams.ce_threshold_mask = 0; |
|
|
|
sta_dbg(sdata, "Allocated STA %pM\n", sta->sta.addr); |
|
|
|
return sta; |
|
|
|
free_txq: |
|
if (sta->sta.txq[0]) |
|
kfree(to_txq_info(sta->sta.txq[0])); |
|
free: |
|
free_percpu(sta->pcpu_rx_stats); |
|
#ifdef CONFIG_MAC80211_MESH |
|
kfree(sta->mesh); |
|
#endif |
|
kfree(sta); |
|
return NULL; |
|
} |
|
|
|
static int sta_info_insert_check(struct sta_info *sta) |
|
{ |
|
struct ieee80211_sub_if_data *sdata = sta->sdata; |
|
|
|
/* |
|
* Can't be a WARN_ON because it can be triggered through a race: |
|
* something inserts a STA (on one CPU) without holding the RTNL |
|
* and another CPU turns off the net device. |
|
*/ |
|
if (unlikely(!ieee80211_sdata_running(sdata))) |
|
return -ENETDOWN; |
|
|
|
if (WARN_ON(ether_addr_equal(sta->sta.addr, sdata->vif.addr) || |
|
!is_valid_ether_addr(sta->sta.addr))) |
|
return -EINVAL; |
|
|
|
/* The RCU read lock is required by rhashtable due to |
|
* asynchronous resize/rehash. We also require the mutex |
|
* for correctness. |
|
*/ |
|
rcu_read_lock(); |
|
lockdep_assert_held(&sdata->local->sta_mtx); |
|
if (ieee80211_hw_check(&sdata->local->hw, NEEDS_UNIQUE_STA_ADDR) && |
|
ieee80211_find_sta_by_ifaddr(&sdata->local->hw, sta->addr, NULL)) { |
|
rcu_read_unlock(); |
|
return -ENOTUNIQ; |
|
} |
|
rcu_read_unlock(); |
|
|
|
return 0; |
|
} |
|
|
|
static int sta_info_insert_drv_state(struct ieee80211_local *local, |
|
struct ieee80211_sub_if_data *sdata, |
|
struct sta_info *sta) |
|
{ |
|
enum ieee80211_sta_state state; |
|
int err = 0; |
|
|
|
for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; state++) { |
|
err = drv_sta_state(local, sdata, sta, state, state + 1); |
|
if (err) |
|
break; |
|
} |
|
|
|
if (!err) { |
|
/* |
|
* Drivers using legacy sta_add/sta_remove callbacks only |
|
* get uploaded set to true after sta_add is called. |
|
*/ |
|
if (!local->ops->sta_add) |
|
sta->uploaded = true; |
|
return 0; |
|
} |
|
|
|
if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
|
sdata_info(sdata, |
|
"failed to move IBSS STA %pM to state %d (%d) - keeping it anyway\n", |
|
sta->sta.addr, state + 1, err); |
|
err = 0; |
|
} |
|
|
|
/* unwind on error */ |
|
for (; state > IEEE80211_STA_NOTEXIST; state--) |
|
WARN_ON(drv_sta_state(local, sdata, sta, state, state - 1)); |
|
|
|
return err; |
|
} |
|
|
|
static void |
|
ieee80211_recalc_p2p_go_ps_allowed(struct ieee80211_sub_if_data *sdata) |
|
{ |
|
struct ieee80211_local *local = sdata->local; |
|
bool allow_p2p_go_ps = sdata->vif.p2p; |
|
struct sta_info *sta; |
|
|
|
rcu_read_lock(); |
|
list_for_each_entry_rcu(sta, &local->sta_list, list) { |
|
if (sdata != sta->sdata || |
|
!test_sta_flag(sta, WLAN_STA_ASSOC)) |
|
continue; |
|
if (!sta->sta.support_p2p_ps) { |
|
allow_p2p_go_ps = false; |
|
break; |
|
} |
|
} |
|
rcu_read_unlock(); |
|
|
|
if (allow_p2p_go_ps != sdata->vif.bss_conf.allow_p2p_go_ps) { |
|
sdata->vif.bss_conf.allow_p2p_go_ps = allow_p2p_go_ps; |
|
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_P2P_PS); |
|
} |
|
} |
|
|
|
/* |
|
* should be called with sta_mtx locked |
|
* this function replaces the mutex lock |
|
* with a RCU lock |
|
*/ |
|
static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU) |
|
{ |
|
struct ieee80211_local *local = sta->local; |
|
struct ieee80211_sub_if_data *sdata = sta->sdata; |
|
struct station_info *sinfo = NULL; |
|
int err = 0; |
|
|
|
lockdep_assert_held(&local->sta_mtx); |
|
|
|
/* check if STA exists already */ |
|
if (sta_info_get_bss(sdata, sta->sta.addr)) { |
|
err = -EEXIST; |
|
goto out_cleanup; |
|
} |
|
|
|
sinfo = kzalloc(sizeof(struct station_info), GFP_KERNEL); |
|
if (!sinfo) { |
|
err = -ENOMEM; |
|
goto out_cleanup; |
|
} |
|
|
|
local->num_sta++; |
|
local->sta_generation++; |
|
smp_mb(); |
|
|
|
/* simplify things and don't accept BA sessions yet */ |
|
set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
|
|
|
/* make the station visible */ |
|
err = sta_info_hash_add(local, sta); |
|
if (err) |
|
goto out_drop_sta; |
|
|
|
list_add_tail_rcu(&sta->list, &local->sta_list); |
|
|
|
/* update channel context before notifying the driver about state |
|
* change, this enables driver using the updated channel context right away. |
|
*/ |
|
if (sta->sta_state >= IEEE80211_STA_ASSOC) { |
|
ieee80211_recalc_min_chandef(sta->sdata); |
|
if (!sta->sta.support_p2p_ps) |
|
ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); |
|
} |
|
|
|
/* notify driver */ |
|
err = sta_info_insert_drv_state(local, sdata, sta); |
|
if (err) |
|
goto out_remove; |
|
|
|
set_sta_flag(sta, WLAN_STA_INSERTED); |
|
|
|
/* accept BA sessions now */ |
|
clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
|
|
|
ieee80211_sta_debugfs_add(sta); |
|
rate_control_add_sta_debugfs(sta); |
|
|
|
sinfo->generation = local->sta_generation; |
|
cfg80211_new_sta(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); |
|
kfree(sinfo); |
|
|
|
sta_dbg(sdata, "Inserted STA %pM\n", sta->sta.addr); |
|
|
|
/* move reference to rcu-protected */ |
|
rcu_read_lock(); |
|
mutex_unlock(&local->sta_mtx); |
|
|
|
if (ieee80211_vif_is_mesh(&sdata->vif)) |
|
mesh_accept_plinks_update(sdata); |
|
|
|
return 0; |
|
out_remove: |
|
sta_info_hash_del(local, sta); |
|
list_del_rcu(&sta->list); |
|
out_drop_sta: |
|
local->num_sta--; |
|
synchronize_net(); |
|
out_cleanup: |
|
cleanup_single_sta(sta); |
|
mutex_unlock(&local->sta_mtx); |
|
kfree(sinfo); |
|
rcu_read_lock(); |
|
return err; |
|
} |
|
|
|
int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU) |
|
{ |
|
struct ieee80211_local *local = sta->local; |
|
int err; |
|
|
|
might_sleep(); |
|
|
|
mutex_lock(&local->sta_mtx); |
|
|
|
err = sta_info_insert_check(sta); |
|
if (err) { |
|
sta_info_free(local, sta); |
|
mutex_unlock(&local->sta_mtx); |
|
rcu_read_lock(); |
|
return err; |
|
} |
|
|
|
return sta_info_insert_finish(sta); |
|
} |
|
|
|
int sta_info_insert(struct sta_info *sta) |
|
{ |
|
int err = sta_info_insert_rcu(sta); |
|
|
|
rcu_read_unlock(); |
|
|
|
return err; |
|
} |
|
|
|
static inline void __bss_tim_set(u8 *tim, u16 id) |
|
{ |
|
/* |
|
* This format has been mandated by the IEEE specifications, |
|
* so this line may not be changed to use the __set_bit() format. |
|
*/ |
|
tim[id / 8] |= (1 << (id % 8)); |
|
} |
|
|
|
static inline void __bss_tim_clear(u8 *tim, u16 id) |
|
{ |
|
/* |
|
* This format has been mandated by the IEEE specifications, |
|
* so this line may not be changed to use the __clear_bit() format. |
|
*/ |
|
tim[id / 8] &= ~(1 << (id % 8)); |
|
} |
|
|
|
static inline bool __bss_tim_get(u8 *tim, u16 id) |
|
{ |
|
/* |
|
* This format has been mandated by the IEEE specifications, |
|
* so this line may not be changed to use the test_bit() format. |
|
*/ |
|
return tim[id / 8] & (1 << (id % 8)); |
|
} |
|
|
|
static unsigned long ieee80211_tids_for_ac(int ac) |
|
{ |
|
/* If we ever support TIDs > 7, this obviously needs to be adjusted */ |
|
switch (ac) { |
|
case IEEE80211_AC_VO: |
|
return BIT(6) | BIT(7); |
|
case IEEE80211_AC_VI: |
|
return BIT(4) | BIT(5); |
|
case IEEE80211_AC_BE: |
|
return BIT(0) | BIT(3); |
|
case IEEE80211_AC_BK: |
|
return BIT(1) | BIT(2); |
|
default: |
|
WARN_ON(1); |
|
return 0; |
|
} |
|
} |
|
|
|
static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending) |
|
{ |
|
struct ieee80211_local *local = sta->local; |
|
struct ps_data *ps; |
|
bool indicate_tim = false; |
|
u8 ignore_for_tim = sta->sta.uapsd_queues; |
|
int ac; |
|
u16 id = sta->sta.aid; |
|
|
|
if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
|
sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
|
if (WARN_ON_ONCE(!sta->sdata->bss)) |
|
return; |
|
|
|
ps = &sta->sdata->bss->ps; |
|
#ifdef CONFIG_MAC80211_MESH |
|
} else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) { |
|
ps = &sta->sdata->u.mesh.ps; |
|
#endif |
|
} else { |
|
return; |
|
} |
|
|
|
/* No need to do anything if the driver does all */ |
|
if (ieee80211_hw_check(&local->hw, AP_LINK_PS) && !local->ops->set_tim) |
|
return; |
|
|
|
if (sta->dead) |
|
goto done; |
|
|
|
/* |
|
* If all ACs are delivery-enabled then we should build |
|
* the TIM bit for all ACs anyway; if only some are then |
|
* we ignore those and build the TIM bit using only the |
|
* non-enabled ones. |
|
*/ |
|
if (ignore_for_tim == BIT(IEEE80211_NUM_ACS) - 1) |
|
ignore_for_tim = 0; |
|
|
|
if (ignore_pending) |
|
ignore_for_tim = BIT(IEEE80211_NUM_ACS) - 1; |
|
|
|
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
|
unsigned long tids; |
|
|
|
if (ignore_for_tim & ieee80211_ac_to_qos_mask[ac]) |
|
continue; |
|
|
|
indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) || |
|
!skb_queue_empty(&sta->ps_tx_buf[ac]); |
|
if (indicate_tim) |
|
break; |
|
|
|
tids = ieee80211_tids_for_ac(ac); |
|
|
|
indicate_tim |= |
|
sta->driver_buffered_tids & tids; |
|
indicate_tim |= |
|
sta->txq_buffered_tids & tids; |
|
} |
|
|
|
done: |
|
spin_lock_bh(&local->tim_lock); |
|
|
|
if (indicate_tim == __bss_tim_get(ps->tim, id)) |
|
goto out_unlock; |
|
|
|
if (indicate_tim) |
|
__bss_tim_set(ps->tim, id); |
|
else |
|
__bss_tim_clear(ps->tim, id); |
|
|
|
if (local->ops->set_tim && !WARN_ON(sta->dead)) { |
|
local->tim_in_locked_section = true; |
|
drv_set_tim(local, &sta->sta, indicate_tim); |
|
local->tim_in_locked_section = false; |
|
} |
|
|
|
out_unlock: |
|
spin_unlock_bh(&local->tim_lock); |
|
} |
|
|
|
void sta_info_recalc_tim(struct sta_info *sta) |
|
{ |
|
__sta_info_recalc_tim(sta, false); |
|
} |
|
|
|
static bool sta_info_buffer_expired(struct sta_info *sta, struct sk_buff *skb) |
|
{ |
|
struct ieee80211_tx_info *info; |
|
int timeout; |
|
|
|
if (!skb) |
|
return false; |
|
|
|
info = IEEE80211_SKB_CB(skb); |
|
|
|
/* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */ |
|
timeout = (sta->listen_interval * |
|
sta->sdata->vif.bss_conf.beacon_int * |
|
32 / 15625) * HZ; |
|
if (timeout < STA_TX_BUFFER_EXPIRE) |
|
timeout = STA_TX_BUFFER_EXPIRE; |
|
return time_after(jiffies, info->control.jiffies + timeout); |
|
} |
|
|
|
|
|
static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local, |
|
struct sta_info *sta, int ac) |
|
{ |
|
unsigned long flags; |
|
struct sk_buff *skb; |
|
|
|
/* |
|
* First check for frames that should expire on the filtered |
|
* queue. Frames here were rejected by the driver and are on |
|
* a separate queue to avoid reordering with normal PS-buffered |
|
* frames. They also aren't accounted for right now in the |
|
* total_ps_buffered counter. |
|
*/ |
|
for (;;) { |
|
spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
|
skb = skb_peek(&sta->tx_filtered[ac]); |
|
if (sta_info_buffer_expired(sta, skb)) |
|
skb = __skb_dequeue(&sta->tx_filtered[ac]); |
|
else |
|
skb = NULL; |
|
spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
|
|
|
/* |
|
* Frames are queued in order, so if this one |
|
* hasn't expired yet we can stop testing. If |
|
* we actually reached the end of the queue we |
|
* also need to stop, of course. |
|
*/ |
|
if (!skb) |
|
break; |
|
ieee80211_free_txskb(&local->hw, skb); |
|
} |
|
|
|
/* |
|
* Now also check the normal PS-buffered queue, this will |
|
* only find something if the filtered queue was emptied |
|
* since the filtered frames are all before the normal PS |
|
* buffered frames. |
|
*/ |
|
for (;;) { |
|
spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
|
skb = skb_peek(&sta->ps_tx_buf[ac]); |
|
if (sta_info_buffer_expired(sta, skb)) |
|
skb = __skb_dequeue(&sta->ps_tx_buf[ac]); |
|
else |
|
skb = NULL; |
|
spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
|
|
|
/* |
|
* frames are queued in order, so if this one |
|
* hasn't expired yet (or we reached the end of |
|
* the queue) we can stop testing |
|
*/ |
|
if (!skb) |
|
break; |
|
|
|
local->total_ps_buffered--; |
|
ps_dbg(sta->sdata, "Buffered frame expired (STA %pM)\n", |
|
sta->sta.addr); |
|
ieee80211_free_txskb(&local->hw, skb); |
|
} |
|
|
|
/* |
|
* Finally, recalculate the TIM bit for this station -- it might |
|
* now be clear because the station was too slow to retrieve its |
|
* frames. |
|
*/ |
|
sta_info_recalc_tim(sta); |
|
|
|
/* |
|
* Return whether there are any frames still buffered, this is |
|
* used to check whether the cleanup timer still needs to run, |
|
* if there are no frames we don't need to rearm the timer. |
|
*/ |
|
return !(skb_queue_empty(&sta->ps_tx_buf[ac]) && |
|
skb_queue_empty(&sta->tx_filtered[ac])); |
|
} |
|
|
|
static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local, |
|
struct sta_info *sta) |
|
{ |
|
bool have_buffered = false; |
|
int ac; |
|
|
|
/* This is only necessary for stations on BSS/MBSS interfaces */ |
|
if (!sta->sdata->bss && |
|
!ieee80211_vif_is_mesh(&sta->sdata->vif)) |
|
return false; |
|
|
|
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) |
|
have_buffered |= |
|
sta_info_cleanup_expire_buffered_ac(local, sta, ac); |
|
|
|
return have_buffered; |
|
} |
|
|
|
static int __must_check __sta_info_destroy_part1(struct sta_info *sta) |
|
{ |
|
struct ieee80211_local *local; |
|
struct ieee80211_sub_if_data *sdata; |
|
int ret; |
|
|
|
might_sleep(); |
|
|
|
if (!sta) |
|
return -ENOENT; |
|
|
|
local = sta->local; |
|
sdata = sta->sdata; |
|
|
|
lockdep_assert_held(&local->sta_mtx); |
|
|
|
/* |
|
* Before removing the station from the driver and |
|
* rate control, it might still start new aggregation |
|
* sessions -- block that to make sure the tear-down |
|
* will be sufficient. |
|
*/ |
|
set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
|
ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA); |
|
|
|
/* |
|
* Before removing the station from the driver there might be pending |
|
* rx frames on RSS queues sent prior to the disassociation - wait for |
|
* all such frames to be processed. |
|
*/ |
|
drv_sync_rx_queues(local, sta); |
|
|
|
ret = sta_info_hash_del(local, sta); |
|
if (WARN_ON(ret)) |
|
return ret; |
|
|
|
/* |
|
* for TDLS peers, make sure to return to the base channel before |
|
* removal. |
|
*/ |
|
if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) { |
|
drv_tdls_cancel_channel_switch(local, sdata, &sta->sta); |
|
clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL); |
|
} |
|
|
|
list_del_rcu(&sta->list); |
|
sta->removed = true; |
|
|
|
drv_sta_pre_rcu_remove(local, sta->sdata, sta); |
|
|
|
if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && |
|
rcu_access_pointer(sdata->u.vlan.sta) == sta) |
|
RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); |
|
|
|
return 0; |
|
} |
|
|
|
static void __sta_info_destroy_part2(struct sta_info *sta) |
|
{ |
|
struct ieee80211_local *local = sta->local; |
|
struct ieee80211_sub_if_data *sdata = sta->sdata; |
|
struct station_info *sinfo; |
|
int ret; |
|
|
|
/* |
|
* NOTE: This assumes at least synchronize_net() was done |
|
* after _part1 and before _part2! |
|
*/ |
|
|
|
might_sleep(); |
|
lockdep_assert_held(&local->sta_mtx); |
|
|
|
if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
|
ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); |
|
WARN_ON_ONCE(ret); |
|
} |
|
|
|
/* now keys can no longer be reached */ |
|
ieee80211_free_sta_keys(local, sta); |
|
|
|
/* disable TIM bit - last chance to tell driver */ |
|
__sta_info_recalc_tim(sta, true); |
|
|
|
sta->dead = true; |
|
|
|
local->num_sta--; |
|
local->sta_generation++; |
|
|
|
while (sta->sta_state > IEEE80211_STA_NONE) { |
|
ret = sta_info_move_state(sta, sta->sta_state - 1); |
|
if (ret) { |
|
WARN_ON_ONCE(1); |
|
break; |
|
} |
|
} |
|
|
|
if (sta->uploaded) { |
|
ret = drv_sta_state(local, sdata, sta, IEEE80211_STA_NONE, |
|
IEEE80211_STA_NOTEXIST); |
|
WARN_ON_ONCE(ret != 0); |
|
} |
|
|
|
sta_dbg(sdata, "Removed STA %pM\n", sta->sta.addr); |
|
|
|
sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL); |
|
if (sinfo) |
|
sta_set_sinfo(sta, sinfo, true); |
|
cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); |
|
kfree(sinfo); |
|
|
|
ieee80211_sta_debugfs_remove(sta); |
|
|
|
ieee80211_destroy_frag_cache(&sta->frags); |
|
|
|
cleanup_single_sta(sta); |
|
} |
|
|
|
int __must_check __sta_info_destroy(struct sta_info *sta) |
|
{ |
|
int err = __sta_info_destroy_part1(sta); |
|
|
|
if (err) |
|
return err; |
|
|
|
synchronize_net(); |
|
|
|
__sta_info_destroy_part2(sta); |
|
|
|
return 0; |
|
} |
|
|
|
int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr) |
|
{ |
|
struct sta_info *sta; |
|
int ret; |
|
|
|
mutex_lock(&sdata->local->sta_mtx); |
|
sta = sta_info_get(sdata, addr); |
|
ret = __sta_info_destroy(sta); |
|
mutex_unlock(&sdata->local->sta_mtx); |
|
|
|
return ret; |
|
} |
|
|
|
int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
|
const u8 *addr) |
|
{ |
|
struct sta_info *sta; |
|
int ret; |
|
|
|
mutex_lock(&sdata->local->sta_mtx); |
|
sta = sta_info_get_bss(sdata, addr); |
|
ret = __sta_info_destroy(sta); |
|
mutex_unlock(&sdata->local->sta_mtx); |
|
|
|
return ret; |
|
} |
|
|
|
static void sta_info_cleanup(struct timer_list *t) |
|
{ |
|
struct ieee80211_local *local = from_timer(local, t, sta_cleanup); |
|
struct sta_info *sta; |
|
bool timer_needed = false; |
|
|
|
rcu_read_lock(); |
|
list_for_each_entry_rcu(sta, &local->sta_list, list) |
|
if (sta_info_cleanup_expire_buffered(local, sta)) |
|
timer_needed = true; |
|
rcu_read_unlock(); |
|
|
|
if (local->quiescing) |
|
return; |
|
|
|
if (!timer_needed) |
|
return; |
|
|
|
mod_timer(&local->sta_cleanup, |
|
round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL)); |
|
} |
|
|
|
int sta_info_init(struct ieee80211_local *local) |
|
{ |
|
int err; |
|
|
|
err = rhltable_init(&local->sta_hash, &sta_rht_params); |
|
if (err) |
|
return err; |
|
|
|
spin_lock_init(&local->tim_lock); |
|
mutex_init(&local->sta_mtx); |
|
INIT_LIST_HEAD(&local->sta_list); |
|
|
|
timer_setup(&local->sta_cleanup, sta_info_cleanup, 0); |
|
return 0; |
|
} |
|
|
|
void sta_info_stop(struct ieee80211_local *local) |
|
{ |
|
del_timer_sync(&local->sta_cleanup); |
|
rhltable_destroy(&local->sta_hash); |
|
} |
|
|
|
|
|
int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans) |
|
{ |
|
struct ieee80211_local *local = sdata->local; |
|
struct sta_info *sta, *tmp; |
|
LIST_HEAD(free_list); |
|
int ret = 0; |
|
|
|
might_sleep(); |
|
|
|
WARN_ON(vlans && sdata->vif.type != NL80211_IFTYPE_AP); |
|
WARN_ON(vlans && !sdata->bss); |
|
|
|
mutex_lock(&local->sta_mtx); |
|
list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { |
|
if (sdata == sta->sdata || |
|
(vlans && sdata->bss == sta->sdata->bss)) { |
|
if (!WARN_ON(__sta_info_destroy_part1(sta))) |
|
list_add(&sta->free_list, &free_list); |
|
ret++; |
|
} |
|
} |
|
|
|
if (!list_empty(&free_list)) { |
|
synchronize_net(); |
|
list_for_each_entry_safe(sta, tmp, &free_list, free_list) |
|
__sta_info_destroy_part2(sta); |
|
} |
|
mutex_unlock(&local->sta_mtx); |
|
|
|
return ret; |
|
} |
|
|
|
void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
|
unsigned long exp_time) |
|
{ |
|
struct ieee80211_local *local = sdata->local; |
|
struct sta_info *sta, *tmp; |
|
|
|
mutex_lock(&local->sta_mtx); |
|
|
|
list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { |
|
unsigned long last_active = ieee80211_sta_last_active(sta); |
|
|
|
if (sdata != sta->sdata) |
|
continue; |
|
|
|
if (time_is_before_jiffies(last_active + exp_time)) { |
|
sta_dbg(sta->sdata, "expiring inactive STA %pM\n", |
|
sta->sta.addr); |
|
|
|
if (ieee80211_vif_is_mesh(&sdata->vif) && |
|
test_sta_flag(sta, WLAN_STA_PS_STA)) |
|
atomic_dec(&sdata->u.mesh.ps.num_sta_ps); |
|
|
|
WARN_ON(__sta_info_destroy(sta)); |
|
} |
|
} |
|
|
|
mutex_unlock(&local->sta_mtx); |
|
} |
|
|
|
struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, |
|
const u8 *addr, |
|
const u8 *localaddr) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
struct rhlist_head *tmp; |
|
struct sta_info *sta; |
|
|
|
/* |
|
* Just return a random station if localaddr is NULL |
|
* ... first in list. |
|
*/ |
|
for_each_sta_info(local, addr, sta, tmp) { |
|
if (localaddr && |
|
!ether_addr_equal(sta->sdata->vif.addr, localaddr)) |
|
continue; |
|
if (!sta->uploaded) |
|
return NULL; |
|
return &sta->sta; |
|
} |
|
|
|
return NULL; |
|
} |
|
EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_ifaddr); |
|
|
|
struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, |
|
const u8 *addr) |
|
{ |
|
struct sta_info *sta; |
|
|
|
if (!vif) |
|
return NULL; |
|
|
|
sta = sta_info_get_bss(vif_to_sdata(vif), addr); |
|
if (!sta) |
|
return NULL; |
|
|
|
if (!sta->uploaded) |
|
return NULL; |
|
|
|
return &sta->sta; |
|
} |
|
EXPORT_SYMBOL(ieee80211_find_sta); |
|
|
|
/* powersave support code */ |
|
void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta) |
|
{ |
|
struct ieee80211_sub_if_data *sdata = sta->sdata; |
|
struct ieee80211_local *local = sdata->local; |
|
struct sk_buff_head pending; |
|
int filtered = 0, buffered = 0, ac, i; |
|
unsigned long flags; |
|
struct ps_data *ps; |
|
|
|
if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
|
sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, |
|
u.ap); |
|
|
|
if (sdata->vif.type == NL80211_IFTYPE_AP) |
|
ps = &sdata->bss->ps; |
|
else if (ieee80211_vif_is_mesh(&sdata->vif)) |
|
ps = &sdata->u.mesh.ps; |
|
else |
|
return; |
|
|
|
clear_sta_flag(sta, WLAN_STA_SP); |
|
|
|
BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS) > 1); |
|
sta->driver_buffered_tids = 0; |
|
sta->txq_buffered_tids = 0; |
|
|
|
if (!ieee80211_hw_check(&local->hw, AP_LINK_PS)) |
|
drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta); |
|
|
|
for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { |
|
if (!sta->sta.txq[i] || !txq_has_queue(sta->sta.txq[i])) |
|
continue; |
|
|
|
schedule_and_wake_txq(local, to_txq_info(sta->sta.txq[i])); |
|
} |
|
|
|
skb_queue_head_init(&pending); |
|
|
|
/* sync with ieee80211_tx_h_unicast_ps_buf */ |
|
spin_lock(&sta->ps_lock); |
|
/* Send all buffered frames to the station */ |
|
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
|
int count = skb_queue_len(&pending), tmp; |
|
|
|
spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
|
skb_queue_splice_tail_init(&sta->tx_filtered[ac], &pending); |
|
spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
|
tmp = skb_queue_len(&pending); |
|
filtered += tmp - count; |
|
count = tmp; |
|
|
|
spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
|
skb_queue_splice_tail_init(&sta->ps_tx_buf[ac], &pending); |
|
spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
|
tmp = skb_queue_len(&pending); |
|
buffered += tmp - count; |
|
} |
|
|
|
ieee80211_add_pending_skbs(local, &pending); |
|
|
|
/* now we're no longer in the deliver code */ |
|
clear_sta_flag(sta, WLAN_STA_PS_DELIVER); |
|
|
|
/* The station might have polled and then woken up before we responded, |
|
* so clear these flags now to avoid them sticking around. |
|
*/ |
|
clear_sta_flag(sta, WLAN_STA_PSPOLL); |
|
clear_sta_flag(sta, WLAN_STA_UAPSD); |
|
spin_unlock(&sta->ps_lock); |
|
|
|
atomic_dec(&ps->num_sta_ps); |
|
|
|
local->total_ps_buffered -= buffered; |
|
|
|
sta_info_recalc_tim(sta); |
|
|
|
ps_dbg(sdata, |
|
"STA %pM aid %d sending %d filtered/%d PS frames since STA woke up\n", |
|
sta->sta.addr, sta->sta.aid, filtered, buffered); |
|
|
|
ieee80211_check_fast_xmit(sta); |
|
} |
|
|
|
static void ieee80211_send_null_response(struct sta_info *sta, int tid, |
|
enum ieee80211_frame_release_type reason, |
|
bool call_driver, bool more_data) |
|
{ |
|
struct ieee80211_sub_if_data *sdata = sta->sdata; |
|
struct ieee80211_local *local = sdata->local; |
|
struct ieee80211_qos_hdr *nullfunc; |
|
struct sk_buff *skb; |
|
int size = sizeof(*nullfunc); |
|
__le16 fc; |
|
bool qos = sta->sta.wme; |
|
struct ieee80211_tx_info *info; |
|
struct ieee80211_chanctx_conf *chanctx_conf; |
|
|
|
if (qos) { |
|
fc = cpu_to_le16(IEEE80211_FTYPE_DATA | |
|
IEEE80211_STYPE_QOS_NULLFUNC | |
|
IEEE80211_FCTL_FROMDS); |
|
} else { |
|
size -= 2; |
|
fc = cpu_to_le16(IEEE80211_FTYPE_DATA | |
|
IEEE80211_STYPE_NULLFUNC | |
|
IEEE80211_FCTL_FROMDS); |
|
} |
|
|
|
skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); |
|
if (!skb) |
|
return; |
|
|
|
skb_reserve(skb, local->hw.extra_tx_headroom); |
|
|
|
nullfunc = skb_put(skb, size); |
|
nullfunc->frame_control = fc; |
|
nullfunc->duration_id = 0; |
|
memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); |
|
memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); |
|
memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); |
|
nullfunc->seq_ctrl = 0; |
|
|
|
skb->priority = tid; |
|
skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]); |
|
if (qos) { |
|
nullfunc->qos_ctrl = cpu_to_le16(tid); |
|
|
|
if (reason == IEEE80211_FRAME_RELEASE_UAPSD) { |
|
nullfunc->qos_ctrl |= |
|
cpu_to_le16(IEEE80211_QOS_CTL_EOSP); |
|
if (more_data) |
|
nullfunc->frame_control |= |
|
cpu_to_le16(IEEE80211_FCTL_MOREDATA); |
|
} |
|
} |
|
|
|
info = IEEE80211_SKB_CB(skb); |
|
|
|
/* |
|
* Tell TX path to send this frame even though the |
|
* STA may still remain is PS mode after this frame |
|
* exchange. Also set EOSP to indicate this packet |
|
* ends the poll/service period. |
|
*/ |
|
info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER | |
|
IEEE80211_TX_STATUS_EOSP | |
|
IEEE80211_TX_CTL_REQ_TX_STATUS; |
|
|
|
info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; |
|
|
|
if (call_driver) |
|
drv_allow_buffered_frames(local, sta, BIT(tid), 1, |
|
reason, false); |
|
|
|
skb->dev = sdata->dev; |
|
|
|
rcu_read_lock(); |
|
chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); |
|
if (WARN_ON(!chanctx_conf)) { |
|
rcu_read_unlock(); |
|
kfree_skb(skb); |
|
return; |
|
} |
|
|
|
info->band = chanctx_conf->def.chan->band; |
|
ieee80211_xmit(sdata, sta, skb); |
|
rcu_read_unlock(); |
|
} |
|
|
|
static int find_highest_prio_tid(unsigned long tids) |
|
{ |
|
/* lower 3 TIDs aren't ordered perfectly */ |
|
if (tids & 0xF8) |
|
return fls(tids) - 1; |
|
/* TID 0 is BE just like TID 3 */ |
|
if (tids & BIT(0)) |
|
return 0; |
|
return fls(tids) - 1; |
|
} |
|
|
|
/* Indicates if the MORE_DATA bit should be set in the last |
|
* frame obtained by ieee80211_sta_ps_get_frames. |
|
* Note that driver_release_tids is relevant only if |
|
* reason = IEEE80211_FRAME_RELEASE_PSPOLL |
|
*/ |
|
static bool |
|
ieee80211_sta_ps_more_data(struct sta_info *sta, u8 ignored_acs, |
|
enum ieee80211_frame_release_type reason, |
|
unsigned long driver_release_tids) |
|
{ |
|
int ac; |
|
|
|
/* If the driver has data on more than one TID then |
|
* certainly there's more data if we release just a |
|
* single frame now (from a single TID). This will |
|
* only happen for PS-Poll. |
|
*/ |
|
if (reason == IEEE80211_FRAME_RELEASE_PSPOLL && |
|
hweight16(driver_release_tids) > 1) |
|
return true; |
|
|
|
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
|
if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
|
continue; |
|
|
|
if (!skb_queue_empty(&sta->tx_filtered[ac]) || |
|
!skb_queue_empty(&sta->ps_tx_buf[ac])) |
|
return true; |
|
} |
|
|
|
return false; |
|
} |
|
|
|
static void |
|
ieee80211_sta_ps_get_frames(struct sta_info *sta, int n_frames, u8 ignored_acs, |
|
enum ieee80211_frame_release_type reason, |
|
struct sk_buff_head *frames, |
|
unsigned long *driver_release_tids) |
|
{ |
|
struct ieee80211_sub_if_data *sdata = sta->sdata; |
|
struct ieee80211_local *local = sdata->local; |
|
int ac; |
|
|
|
/* Get response frame(s) and more data bit for the last one. */ |
|
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
|
unsigned long tids; |
|
|
|
if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
|
continue; |
|
|
|
tids = ieee80211_tids_for_ac(ac); |
|
|
|
/* if we already have frames from software, then we can't also |
|
* release from hardware queues |
|
*/ |
|
if (skb_queue_empty(frames)) { |
|
*driver_release_tids |= |
|
sta->driver_buffered_tids & tids; |
|
*driver_release_tids |= sta->txq_buffered_tids & tids; |
|
} |
|
|
|
if (!*driver_release_tids) { |
|
struct sk_buff *skb; |
|
|
|
while (n_frames > 0) { |
|
skb = skb_dequeue(&sta->tx_filtered[ac]); |
|
if (!skb) { |
|
skb = skb_dequeue( |
|
&sta->ps_tx_buf[ac]); |
|
if (skb) |
|
local->total_ps_buffered--; |
|
} |
|
if (!skb) |
|
break; |
|
n_frames--; |
|
__skb_queue_tail(frames, skb); |
|
} |
|
} |
|
|
|
/* If we have more frames buffered on this AC, then abort the |
|
* loop since we can't send more data from other ACs before |
|
* the buffered frames from this. |
|
*/ |
|
if (!skb_queue_empty(&sta->tx_filtered[ac]) || |
|
!skb_queue_empty(&sta->ps_tx_buf[ac])) |
|
break; |
|
} |
|
} |
|
|
|
static void |
|
ieee80211_sta_ps_deliver_response(struct sta_info *sta, |
|
int n_frames, u8 ignored_acs, |
|
enum ieee80211_frame_release_type reason) |
|
{ |
|
struct ieee80211_sub_if_data *sdata = sta->sdata; |
|
struct ieee80211_local *local = sdata->local; |
|
unsigned long driver_release_tids = 0; |
|
struct sk_buff_head frames; |
|
bool more_data; |
|
|
|
/* Service or PS-Poll period starts */ |
|
set_sta_flag(sta, WLAN_STA_SP); |
|
|
|
__skb_queue_head_init(&frames); |
|
|
|
ieee80211_sta_ps_get_frames(sta, n_frames, ignored_acs, reason, |
|
&frames, &driver_release_tids); |
|
|
|
more_data = ieee80211_sta_ps_more_data(sta, ignored_acs, reason, driver_release_tids); |
|
|
|
if (driver_release_tids && reason == IEEE80211_FRAME_RELEASE_PSPOLL) |
|
driver_release_tids = |
|
BIT(find_highest_prio_tid(driver_release_tids)); |
|
|
|
if (skb_queue_empty(&frames) && !driver_release_tids) { |
|
int tid, ac; |
|
|
|
/* |
|
* For PS-Poll, this can only happen due to a race condition |
|
* when we set the TIM bit and the station notices it, but |
|
* before it can poll for the frame we expire it. |
|
* |
|
* For uAPSD, this is said in the standard (11.2.1.5 h): |
|
* At each unscheduled SP for a non-AP STA, the AP shall |
|
* attempt to transmit at least one MSDU or MMPDU, but no |
|
* more than the value specified in the Max SP Length field |
|
* in the QoS Capability element from delivery-enabled ACs, |
|
* that are destined for the non-AP STA. |
|
* |
|
* Since we have no other MSDU/MMPDU, transmit a QoS null frame. |
|
*/ |
|
|
|
/* This will evaluate to 1, 3, 5 or 7. */ |
|
for (ac = IEEE80211_AC_VO; ac < IEEE80211_NUM_ACS; ac++) |
|
if (!(ignored_acs & ieee80211_ac_to_qos_mask[ac])) |
|
break; |
|
tid = 7 - 2 * ac; |
|
|
|
ieee80211_send_null_response(sta, tid, reason, true, false); |
|
} else if (!driver_release_tids) { |
|
struct sk_buff_head pending; |
|
struct sk_buff *skb; |
|
int num = 0; |
|
u16 tids = 0; |
|
bool need_null = false; |
|
|
|
skb_queue_head_init(&pending); |
|
|
|
while ((skb = __skb_dequeue(&frames))) { |
|
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
|
struct ieee80211_hdr *hdr = (void *) skb->data; |
|
u8 *qoshdr = NULL; |
|
|
|
num++; |
|
|
|
/* |
|
* Tell TX path to send this frame even though the |
|
* STA may still remain is PS mode after this frame |
|
* exchange. |
|
*/ |
|
info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER; |
|
info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; |
|
|
|
/* |
|
* Use MoreData flag to indicate whether there are |
|
* more buffered frames for this STA |
|
*/ |
|
if (more_data || !skb_queue_empty(&frames)) |
|
hdr->frame_control |= |
|
cpu_to_le16(IEEE80211_FCTL_MOREDATA); |
|
else |
|
hdr->frame_control &= |
|
cpu_to_le16(~IEEE80211_FCTL_MOREDATA); |
|
|
|
if (ieee80211_is_data_qos(hdr->frame_control) || |
|
ieee80211_is_qos_nullfunc(hdr->frame_control)) |
|
qoshdr = ieee80211_get_qos_ctl(hdr); |
|
|
|
tids |= BIT(skb->priority); |
|
|
|
__skb_queue_tail(&pending, skb); |
|
|
|
/* end service period after last frame or add one */ |
|
if (!skb_queue_empty(&frames)) |
|
continue; |
|
|
|
if (reason != IEEE80211_FRAME_RELEASE_UAPSD) { |
|
/* for PS-Poll, there's only one frame */ |
|
info->flags |= IEEE80211_TX_STATUS_EOSP | |
|
IEEE80211_TX_CTL_REQ_TX_STATUS; |
|
break; |
|
} |
|
|
|
/* For uAPSD, things are a bit more complicated. If the |
|
* last frame has a QoS header (i.e. is a QoS-data or |
|
* QoS-nulldata frame) then just set the EOSP bit there |
|
* and be done. |
|
* If the frame doesn't have a QoS header (which means |
|
* it should be a bufferable MMPDU) then we can't set |
|
* the EOSP bit in the QoS header; add a QoS-nulldata |
|
* frame to the list to send it after the MMPDU. |
|
* |
|
* Note that this code is only in the mac80211-release |
|
* code path, we assume that the driver will not buffer |
|
* anything but QoS-data frames, or if it does, will |
|
* create the QoS-nulldata frame by itself if needed. |
|
* |
|
* Cf. 802.11-2012 10.2.1.10 (c). |
|
*/ |
|
if (qoshdr) { |
|
*qoshdr |= IEEE80211_QOS_CTL_EOSP; |
|
|
|
info->flags |= IEEE80211_TX_STATUS_EOSP | |
|
IEEE80211_TX_CTL_REQ_TX_STATUS; |
|
} else { |
|
/* The standard isn't completely clear on this |
|
* as it says the more-data bit should be set |
|
* if there are more BUs. The QoS-Null frame |
|
* we're about to send isn't buffered yet, we |
|
* only create it below, but let's pretend it |
|
* was buffered just in case some clients only |
|
* expect more-data=0 when eosp=1. |
|
*/ |
|
hdr->frame_control |= |
|
cpu_to_le16(IEEE80211_FCTL_MOREDATA); |
|
need_null = true; |
|
num++; |
|
} |
|
break; |
|
} |
|
|
|
drv_allow_buffered_frames(local, sta, tids, num, |
|
reason, more_data); |
|
|
|
ieee80211_add_pending_skbs(local, &pending); |
|
|
|
if (need_null) |
|
ieee80211_send_null_response( |
|
sta, find_highest_prio_tid(tids), |
|
reason, false, false); |
|
|
|
sta_info_recalc_tim(sta); |
|
} else { |
|
int tid; |
|
|
|
/* |
|
* We need to release a frame that is buffered somewhere in the |
|
* driver ... it'll have to handle that. |
|
* Note that the driver also has to check the number of frames |
|
* on the TIDs we're releasing from - if there are more than |
|
* n_frames it has to set the more-data bit (if we didn't ask |
|
* it to set it anyway due to other buffered frames); if there |
|
* are fewer than n_frames it has to make sure to adjust that |
|
* to allow the service period to end properly. |
|
*/ |
|
drv_release_buffered_frames(local, sta, driver_release_tids, |
|
n_frames, reason, more_data); |
|
|
|
/* |
|
* Note that we don't recalculate the TIM bit here as it would |
|
* most likely have no effect at all unless the driver told us |
|
* that the TID(s) became empty before returning here from the |
|
* release function. |
|
* Either way, however, when the driver tells us that the TID(s) |
|
* became empty or we find that a txq became empty, we'll do the |
|
* TIM recalculation. |
|
*/ |
|
|
|
if (!sta->sta.txq[0]) |
|
return; |
|
|
|
for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) { |
|
if (!sta->sta.txq[tid] || |
|
!(driver_release_tids & BIT(tid)) || |
|
txq_has_queue(sta->sta.txq[tid])) |
|
continue; |
|
|
|
sta_info_recalc_tim(sta); |
|
break; |
|
} |
|
} |
|
} |
|
|
|
void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta) |
|
{ |
|
u8 ignore_for_response = sta->sta.uapsd_queues; |
|
|
|
/* |
|
* If all ACs are delivery-enabled then we should reply |
|
* from any of them, if only some are enabled we reply |
|
* only from the non-enabled ones. |
|
*/ |
|
if (ignore_for_response == BIT(IEEE80211_NUM_ACS) - 1) |
|
ignore_for_response = 0; |
|
|
|
ieee80211_sta_ps_deliver_response(sta, 1, ignore_for_response, |
|
IEEE80211_FRAME_RELEASE_PSPOLL); |
|
} |
|
|
|
void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta) |
|
{ |
|
int n_frames = sta->sta.max_sp; |
|
u8 delivery_enabled = sta->sta.uapsd_queues; |
|
|
|
/* |
|
* If we ever grow support for TSPEC this might happen if |
|
* the TSPEC update from hostapd comes in between a trigger |
|
* frame setting WLAN_STA_UAPSD in the RX path and this |
|
* actually getting called. |
|
*/ |
|
if (!delivery_enabled) |
|
return; |
|
|
|
switch (sta->sta.max_sp) { |
|
case 1: |
|
n_frames = 2; |
|
break; |
|
case 2: |
|
n_frames = 4; |
|
break; |
|
case 3: |
|
n_frames = 6; |
|
break; |
|
case 0: |
|
/* XXX: what is a good value? */ |
|
n_frames = 128; |
|
break; |
|
} |
|
|
|
ieee80211_sta_ps_deliver_response(sta, n_frames, ~delivery_enabled, |
|
IEEE80211_FRAME_RELEASE_UAPSD); |
|
} |
|
|
|
void ieee80211_sta_block_awake(struct ieee80211_hw *hw, |
|
struct ieee80211_sta *pubsta, bool block) |
|
{ |
|
struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
|
|
|
trace_api_sta_block_awake(sta->local, pubsta, block); |
|
|
|
if (block) { |
|
set_sta_flag(sta, WLAN_STA_PS_DRIVER); |
|
ieee80211_clear_fast_xmit(sta); |
|
return; |
|
} |
|
|
|
if (!test_sta_flag(sta, WLAN_STA_PS_DRIVER)) |
|
return; |
|
|
|
if (!test_sta_flag(sta, WLAN_STA_PS_STA)) { |
|
set_sta_flag(sta, WLAN_STA_PS_DELIVER); |
|
clear_sta_flag(sta, WLAN_STA_PS_DRIVER); |
|
ieee80211_queue_work(hw, &sta->drv_deliver_wk); |
|
} else if (test_sta_flag(sta, WLAN_STA_PSPOLL) || |
|
test_sta_flag(sta, WLAN_STA_UAPSD)) { |
|
/* must be asleep in this case */ |
|
clear_sta_flag(sta, WLAN_STA_PS_DRIVER); |
|
ieee80211_queue_work(hw, &sta->drv_deliver_wk); |
|
} else { |
|
clear_sta_flag(sta, WLAN_STA_PS_DRIVER); |
|
ieee80211_check_fast_xmit(sta); |
|
} |
|
} |
|
EXPORT_SYMBOL(ieee80211_sta_block_awake); |
|
|
|
void ieee80211_sta_eosp(struct ieee80211_sta *pubsta) |
|
{ |
|
struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
|
struct ieee80211_local *local = sta->local; |
|
|
|
trace_api_eosp(local, pubsta); |
|
|
|
clear_sta_flag(sta, WLAN_STA_SP); |
|
} |
|
EXPORT_SYMBOL(ieee80211_sta_eosp); |
|
|
|
void ieee80211_send_eosp_nullfunc(struct ieee80211_sta *pubsta, int tid) |
|
{ |
|
struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
|
enum ieee80211_frame_release_type reason; |
|
bool more_data; |
|
|
|
trace_api_send_eosp_nullfunc(sta->local, pubsta, tid); |
|
|
|
reason = IEEE80211_FRAME_RELEASE_UAPSD; |
|
more_data = ieee80211_sta_ps_more_data(sta, ~sta->sta.uapsd_queues, |
|
reason, 0); |
|
|
|
ieee80211_send_null_response(sta, tid, reason, false, more_data); |
|
} |
|
EXPORT_SYMBOL(ieee80211_send_eosp_nullfunc); |
|
|
|
void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, |
|
u8 tid, bool buffered) |
|
{ |
|
struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
|
|
|
if (WARN_ON(tid >= IEEE80211_NUM_TIDS)) |
|
return; |
|
|
|
trace_api_sta_set_buffered(sta->local, pubsta, tid, buffered); |
|
|
|
if (buffered) |
|
set_bit(tid, &sta->driver_buffered_tids); |
|
else |
|
clear_bit(tid, &sta->driver_buffered_tids); |
|
|
|
sta_info_recalc_tim(sta); |
|
} |
|
EXPORT_SYMBOL(ieee80211_sta_set_buffered); |
|
|
|
void ieee80211_register_airtime(struct ieee80211_txq *txq, |
|
u32 tx_airtime, u32 rx_airtime) |
|
{ |
|
struct ieee80211_sub_if_data *sdata = vif_to_sdata(txq->vif); |
|
struct ieee80211_local *local = sdata->local; |
|
u64 weight_sum, weight_sum_reciprocal; |
|
struct airtime_sched_info *air_sched; |
|
struct airtime_info *air_info; |
|
u32 airtime = 0; |
|
|
|
air_sched = &local->airtime[txq->ac]; |
|
air_info = to_airtime_info(txq); |
|
|
|
if (local->airtime_flags & AIRTIME_USE_TX) |
|
airtime += tx_airtime; |
|
if (local->airtime_flags & AIRTIME_USE_RX) |
|
airtime += rx_airtime; |
|
|
|
/* Weights scale so the unit weight is 256 */ |
|
airtime <<= 8; |
|
|
|
spin_lock_bh(&air_sched->lock); |
|
|
|
air_info->tx_airtime += tx_airtime; |
|
air_info->rx_airtime += rx_airtime; |
|
|
|
if (air_sched->weight_sum) { |
|
weight_sum = air_sched->weight_sum; |
|
weight_sum_reciprocal = air_sched->weight_sum_reciprocal; |
|
} else { |
|
weight_sum = air_info->weight; |
|
weight_sum_reciprocal = air_info->weight_reciprocal; |
|
} |
|
|
|
/* Round the calculation of global vt */ |
|
air_sched->v_t += (u64)((airtime + (weight_sum >> 1)) * |
|
weight_sum_reciprocal) >> IEEE80211_RECIPROCAL_SHIFT_64; |
|
air_info->v_t += (u32)((airtime + (air_info->weight >> 1)) * |
|
air_info->weight_reciprocal) >> IEEE80211_RECIPROCAL_SHIFT_32; |
|
ieee80211_resort_txq(&local->hw, txq); |
|
|
|
spin_unlock_bh(&air_sched->lock); |
|
} |
|
|
|
void ieee80211_sta_register_airtime(struct ieee80211_sta *pubsta, u8 tid, |
|
u32 tx_airtime, u32 rx_airtime) |
|
{ |
|
struct ieee80211_txq *txq = pubsta->txq[tid]; |
|
|
|
if (!txq) |
|
return; |
|
|
|
ieee80211_register_airtime(txq, tx_airtime, rx_airtime); |
|
} |
|
EXPORT_SYMBOL(ieee80211_sta_register_airtime); |
|
|
|
void ieee80211_sta_update_pending_airtime(struct ieee80211_local *local, |
|
struct sta_info *sta, u8 ac, |
|
u16 tx_airtime, bool tx_completed) |
|
{ |
|
int tx_pending; |
|
|
|
if (!wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_AQL)) |
|
return; |
|
|
|
if (!tx_completed) { |
|
if (sta) |
|
atomic_add(tx_airtime, |
|
&sta->airtime[ac].aql_tx_pending); |
|
|
|
atomic_add(tx_airtime, &local->aql_total_pending_airtime); |
|
return; |
|
} |
|
|
|
if (sta) { |
|
tx_pending = atomic_sub_return(tx_airtime, |
|
&sta->airtime[ac].aql_tx_pending); |
|
if (tx_pending < 0) |
|
atomic_cmpxchg(&sta->airtime[ac].aql_tx_pending, |
|
tx_pending, 0); |
|
} |
|
|
|
tx_pending = atomic_sub_return(tx_airtime, |
|
&local->aql_total_pending_airtime); |
|
if (WARN_ONCE(tx_pending < 0, |
|
"Device %s AC %d pending airtime underflow: %u, %u", |
|
wiphy_name(local->hw.wiphy), ac, tx_pending, |
|
tx_airtime)) |
|
atomic_cmpxchg(&local->aql_total_pending_airtime, |
|
tx_pending, 0); |
|
} |
|
|
|
int sta_info_move_state(struct sta_info *sta, |
|
enum ieee80211_sta_state new_state) |
|
{ |
|
might_sleep(); |
|
|
|
if (sta->sta_state == new_state) |
|
return 0; |
|
|
|
/* check allowed transitions first */ |
|
|
|
switch (new_state) { |
|
case IEEE80211_STA_NONE: |
|
if (sta->sta_state != IEEE80211_STA_AUTH) |
|
return -EINVAL; |
|
break; |
|
case IEEE80211_STA_AUTH: |
|
if (sta->sta_state != IEEE80211_STA_NONE && |
|
sta->sta_state != IEEE80211_STA_ASSOC) |
|
return -EINVAL; |
|
break; |
|
case IEEE80211_STA_ASSOC: |
|
if (sta->sta_state != IEEE80211_STA_AUTH && |
|
sta->sta_state != IEEE80211_STA_AUTHORIZED) |
|
return -EINVAL; |
|
break; |
|
case IEEE80211_STA_AUTHORIZED: |
|
if (sta->sta_state != IEEE80211_STA_ASSOC) |
|
return -EINVAL; |
|
break; |
|
default: |
|
WARN(1, "invalid state %d", new_state); |
|
return -EINVAL; |
|
} |
|
|
|
sta_dbg(sta->sdata, "moving STA %pM to state %d\n", |
|
sta->sta.addr, new_state); |
|
|
|
/* |
|
* notify the driver before the actual changes so it can |
|
* fail the transition |
|
*/ |
|
if (test_sta_flag(sta, WLAN_STA_INSERTED)) { |
|
int err = drv_sta_state(sta->local, sta->sdata, sta, |
|
sta->sta_state, new_state); |
|
if (err) |
|
return err; |
|
} |
|
|
|
/* reflect the change in all state variables */ |
|
|
|
switch (new_state) { |
|
case IEEE80211_STA_NONE: |
|
if (sta->sta_state == IEEE80211_STA_AUTH) |
|
clear_bit(WLAN_STA_AUTH, &sta->_flags); |
|
break; |
|
case IEEE80211_STA_AUTH: |
|
if (sta->sta_state == IEEE80211_STA_NONE) { |
|
set_bit(WLAN_STA_AUTH, &sta->_flags); |
|
} else if (sta->sta_state == IEEE80211_STA_ASSOC) { |
|
clear_bit(WLAN_STA_ASSOC, &sta->_flags); |
|
ieee80211_recalc_min_chandef(sta->sdata); |
|
if (!sta->sta.support_p2p_ps) |
|
ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); |
|
} |
|
break; |
|
case IEEE80211_STA_ASSOC: |
|
if (sta->sta_state == IEEE80211_STA_AUTH) { |
|
set_bit(WLAN_STA_ASSOC, &sta->_flags); |
|
sta->assoc_at = ktime_get_boottime_ns(); |
|
ieee80211_recalc_min_chandef(sta->sdata); |
|
if (!sta->sta.support_p2p_ps) |
|
ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); |
|
} else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
|
ieee80211_vif_dec_num_mcast(sta->sdata); |
|
clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
|
ieee80211_clear_fast_xmit(sta); |
|
ieee80211_clear_fast_rx(sta); |
|
} |
|
break; |
|
case IEEE80211_STA_AUTHORIZED: |
|
if (sta->sta_state == IEEE80211_STA_ASSOC) { |
|
ieee80211_vif_inc_num_mcast(sta->sdata); |
|
set_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
|
ieee80211_check_fast_xmit(sta); |
|
ieee80211_check_fast_rx(sta); |
|
} |
|
if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
|
sta->sdata->vif.type == NL80211_IFTYPE_AP) |
|
cfg80211_send_layer2_update(sta->sdata->dev, |
|
sta->sta.addr); |
|
break; |
|
default: |
|
break; |
|
} |
|
|
|
sta->sta_state = new_state; |
|
|
|
return 0; |
|
} |
|
|
|
u8 sta_info_tx_streams(struct sta_info *sta) |
|
{ |
|
struct ieee80211_sta_ht_cap *ht_cap = &sta->sta.ht_cap; |
|
u8 rx_streams; |
|
|
|
if (!sta->sta.ht_cap.ht_supported) |
|
return 1; |
|
|
|
if (sta->sta.vht_cap.vht_supported) { |
|
int i; |
|
u16 tx_mcs_map = |
|
le16_to_cpu(sta->sta.vht_cap.vht_mcs.tx_mcs_map); |
|
|
|
for (i = 7; i >= 0; i--) |
|
if ((tx_mcs_map & (0x3 << (i * 2))) != |
|
IEEE80211_VHT_MCS_NOT_SUPPORTED) |
|
return i + 1; |
|
} |
|
|
|
if (ht_cap->mcs.rx_mask[3]) |
|
rx_streams = 4; |
|
else if (ht_cap->mcs.rx_mask[2]) |
|
rx_streams = 3; |
|
else if (ht_cap->mcs.rx_mask[1]) |
|
rx_streams = 2; |
|
else |
|
rx_streams = 1; |
|
|
|
if (!(ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_RX_DIFF)) |
|
return rx_streams; |
|
|
|
return ((ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) |
|
>> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT) + 1; |
|
} |
|
|
|
static struct ieee80211_sta_rx_stats * |
|
sta_get_last_rx_stats(struct sta_info *sta) |
|
{ |
|
struct ieee80211_sta_rx_stats *stats = &sta->rx_stats; |
|
int cpu; |
|
|
|
if (!sta->pcpu_rx_stats) |
|
return stats; |
|
|
|
for_each_possible_cpu(cpu) { |
|
struct ieee80211_sta_rx_stats *cpustats; |
|
|
|
cpustats = per_cpu_ptr(sta->pcpu_rx_stats, cpu); |
|
|
|
if (time_after(cpustats->last_rx, stats->last_rx)) |
|
stats = cpustats; |
|
} |
|
|
|
return stats; |
|
} |
|
|
|
static void sta_stats_decode_rate(struct ieee80211_local *local, u32 rate, |
|
struct rate_info *rinfo) |
|
{ |
|
rinfo->bw = STA_STATS_GET(BW, rate); |
|
|
|
switch (STA_STATS_GET(TYPE, rate)) { |
|
case STA_STATS_RATE_TYPE_VHT: |
|
rinfo->flags = RATE_INFO_FLAGS_VHT_MCS; |
|
rinfo->mcs = STA_STATS_GET(VHT_MCS, rate); |
|
rinfo->nss = STA_STATS_GET(VHT_NSS, rate); |
|
if (STA_STATS_GET(SGI, rate)) |
|
rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; |
|
break; |
|
case STA_STATS_RATE_TYPE_HT: |
|
rinfo->flags = RATE_INFO_FLAGS_MCS; |
|
rinfo->mcs = STA_STATS_GET(HT_MCS, rate); |
|
if (STA_STATS_GET(SGI, rate)) |
|
rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; |
|
break; |
|
case STA_STATS_RATE_TYPE_LEGACY: { |
|
struct ieee80211_supported_band *sband; |
|
u16 brate; |
|
unsigned int shift; |
|
int band = STA_STATS_GET(LEGACY_BAND, rate); |
|
int rate_idx = STA_STATS_GET(LEGACY_IDX, rate); |
|
|
|
sband = local->hw.wiphy->bands[band]; |
|
|
|
if (WARN_ON_ONCE(!sband->bitrates)) |
|
break; |
|
|
|
brate = sband->bitrates[rate_idx].bitrate; |
|
if (rinfo->bw == RATE_INFO_BW_5) |
|
shift = 2; |
|
else if (rinfo->bw == RATE_INFO_BW_10) |
|
shift = 1; |
|
else |
|
shift = 0; |
|
rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); |
|
break; |
|
} |
|
case STA_STATS_RATE_TYPE_HE: |
|
rinfo->flags = RATE_INFO_FLAGS_HE_MCS; |
|
rinfo->mcs = STA_STATS_GET(HE_MCS, rate); |
|
rinfo->nss = STA_STATS_GET(HE_NSS, rate); |
|
rinfo->he_gi = STA_STATS_GET(HE_GI, rate); |
|
rinfo->he_ru_alloc = STA_STATS_GET(HE_RU, rate); |
|
rinfo->he_dcm = STA_STATS_GET(HE_DCM, rate); |
|
break; |
|
} |
|
} |
|
|
|
static int sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) |
|
{ |
|
u16 rate = READ_ONCE(sta_get_last_rx_stats(sta)->last_rate); |
|
|
|
if (rate == STA_STATS_RATE_INVALID) |
|
return -EINVAL; |
|
|
|
sta_stats_decode_rate(sta->local, rate, rinfo); |
|
return 0; |
|
} |
|
|
|
static inline u64 sta_get_tidstats_msdu(struct ieee80211_sta_rx_stats *rxstats, |
|
int tid) |
|
{ |
|
unsigned int start; |
|
u64 value; |
|
|
|
do { |
|
start = u64_stats_fetch_begin(&rxstats->syncp); |
|
value = rxstats->msdu[tid]; |
|
} while (u64_stats_fetch_retry(&rxstats->syncp, start)); |
|
|
|
return value; |
|
} |
|
|
|
static void sta_set_tidstats(struct sta_info *sta, |
|
struct cfg80211_tid_stats *tidstats, |
|
int tid) |
|
{ |
|
struct ieee80211_local *local = sta->local; |
|
int cpu; |
|
|
|
if (!(tidstats->filled & BIT(NL80211_TID_STATS_RX_MSDU))) { |
|
tidstats->rx_msdu += sta_get_tidstats_msdu(&sta->rx_stats, tid); |
|
|
|
if (sta->pcpu_rx_stats) { |
|
for_each_possible_cpu(cpu) { |
|
struct ieee80211_sta_rx_stats *cpurxs; |
|
|
|
cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); |
|
tidstats->rx_msdu += |
|
sta_get_tidstats_msdu(cpurxs, tid); |
|
} |
|
} |
|
|
|
tidstats->filled |= BIT(NL80211_TID_STATS_RX_MSDU); |
|
} |
|
|
|
if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU))) { |
|
tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU); |
|
tidstats->tx_msdu = sta->tx_stats.msdu[tid]; |
|
} |
|
|
|
if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_RETRIES)) && |
|
ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
|
tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_RETRIES); |
|
tidstats->tx_msdu_retries = sta->status_stats.msdu_retries[tid]; |
|
} |
|
|
|
if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_FAILED)) && |
|
ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
|
tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_FAILED); |
|
tidstats->tx_msdu_failed = sta->status_stats.msdu_failed[tid]; |
|
} |
|
|
|
if (local->ops->wake_tx_queue && tid < IEEE80211_NUM_TIDS) { |
|
spin_lock_bh(&local->fq.lock); |
|
rcu_read_lock(); |
|
|
|
tidstats->filled |= BIT(NL80211_TID_STATS_TXQ_STATS); |
|
ieee80211_fill_txq_stats(&tidstats->txq_stats, |
|
to_txq_info(sta->sta.txq[tid])); |
|
|
|
rcu_read_unlock(); |
|
spin_unlock_bh(&local->fq.lock); |
|
} |
|
} |
|
|
|
static inline u64 sta_get_stats_bytes(struct ieee80211_sta_rx_stats *rxstats) |
|
{ |
|
unsigned int start; |
|
u64 value; |
|
|
|
do { |
|
start = u64_stats_fetch_begin(&rxstats->syncp); |
|
value = rxstats->bytes; |
|
} while (u64_stats_fetch_retry(&rxstats->syncp, start)); |
|
|
|
return value; |
|
} |
|
|
|
void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo, |
|
bool tidstats) |
|
{ |
|
struct ieee80211_sub_if_data *sdata = sta->sdata; |
|
struct ieee80211_local *local = sdata->local; |
|
u32 thr = 0; |
|
int i, ac, cpu; |
|
struct ieee80211_sta_rx_stats *last_rxstats; |
|
|
|
last_rxstats = sta_get_last_rx_stats(sta); |
|
|
|
sinfo->generation = sdata->local->sta_generation; |
|
|
|
/* do before driver, so beacon filtering drivers have a |
|
* chance to e.g. just add the number of filtered beacons |
|
* (or just modify the value entirely, of course) |
|
*/ |
|
if (sdata->vif.type == NL80211_IFTYPE_STATION) |
|
sinfo->rx_beacon = sdata->u.mgd.count_beacon_signal; |
|
|
|
drv_sta_statistics(local, sdata, &sta->sta, sinfo); |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_INACTIVE_TIME) | |
|
BIT_ULL(NL80211_STA_INFO_STA_FLAGS) | |
|
BIT_ULL(NL80211_STA_INFO_BSS_PARAM) | |
|
BIT_ULL(NL80211_STA_INFO_CONNECTED_TIME) | |
|
BIT_ULL(NL80211_STA_INFO_ASSOC_AT_BOOTTIME) | |
|
BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC); |
|
|
|
if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
|
sinfo->beacon_loss_count = sdata->u.mgd.beacon_loss_count; |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_LOSS); |
|
} |
|
|
|
sinfo->connected_time = ktime_get_seconds() - sta->last_connected; |
|
sinfo->assoc_at = sta->assoc_at; |
|
sinfo->inactive_time = |
|
jiffies_to_msecs(jiffies - ieee80211_sta_last_active(sta)); |
|
|
|
if (!(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES64) | |
|
BIT_ULL(NL80211_STA_INFO_TX_BYTES)))) { |
|
sinfo->tx_bytes = 0; |
|
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) |
|
sinfo->tx_bytes += sta->tx_stats.bytes[ac]; |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BYTES64); |
|
} |
|
|
|
if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_PACKETS))) { |
|
sinfo->tx_packets = 0; |
|
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) |
|
sinfo->tx_packets += sta->tx_stats.packets[ac]; |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_PACKETS); |
|
} |
|
|
|
if (!(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES64) | |
|
BIT_ULL(NL80211_STA_INFO_RX_BYTES)))) { |
|
sinfo->rx_bytes += sta_get_stats_bytes(&sta->rx_stats); |
|
|
|
if (sta->pcpu_rx_stats) { |
|
for_each_possible_cpu(cpu) { |
|
struct ieee80211_sta_rx_stats *cpurxs; |
|
|
|
cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); |
|
sinfo->rx_bytes += sta_get_stats_bytes(cpurxs); |
|
} |
|
} |
|
|
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BYTES64); |
|
} |
|
|
|
if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_PACKETS))) { |
|
sinfo->rx_packets = sta->rx_stats.packets; |
|
if (sta->pcpu_rx_stats) { |
|
for_each_possible_cpu(cpu) { |
|
struct ieee80211_sta_rx_stats *cpurxs; |
|
|
|
cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); |
|
sinfo->rx_packets += cpurxs->packets; |
|
} |
|
} |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_PACKETS); |
|
} |
|
|
|
if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_RETRIES))) { |
|
sinfo->tx_retries = sta->status_stats.retry_count; |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_RETRIES); |
|
} |
|
|
|
if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED))) { |
|
sinfo->tx_failed = sta->status_stats.retry_failed; |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_FAILED); |
|
} |
|
|
|
if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_DURATION))) { |
|
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) |
|
sinfo->rx_duration += sta->airtime[ac].rx_airtime; |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_DURATION); |
|
} |
|
|
|
if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_DURATION))) { |
|
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) |
|
sinfo->tx_duration += sta->airtime[ac].tx_airtime; |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_DURATION); |
|
} |
|
|
|
if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT))) { |
|
sinfo->airtime_weight = sta->airtime[0].weight; |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT); |
|
} |
|
|
|
sinfo->rx_dropped_misc = sta->rx_stats.dropped; |
|
if (sta->pcpu_rx_stats) { |
|
for_each_possible_cpu(cpu) { |
|
struct ieee80211_sta_rx_stats *cpurxs; |
|
|
|
cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); |
|
sinfo->rx_dropped_misc += cpurxs->dropped; |
|
} |
|
} |
|
|
|
if (sdata->vif.type == NL80211_IFTYPE_STATION && |
|
!(sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)) { |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX) | |
|
BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); |
|
sinfo->rx_beacon_signal_avg = ieee80211_ave_rssi(&sdata->vif); |
|
} |
|
|
|
if (ieee80211_hw_check(&sta->local->hw, SIGNAL_DBM) || |
|
ieee80211_hw_check(&sta->local->hw, SIGNAL_UNSPEC)) { |
|
if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_SIGNAL))) { |
|
sinfo->signal = (s8)last_rxstats->last_signal; |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL); |
|
} |
|
|
|
if (!sta->pcpu_rx_stats && |
|
!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG))) { |
|
sinfo->signal_avg = |
|
-ewma_signal_read(&sta->rx_stats_avg.signal); |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); |
|
} |
|
} |
|
|
|
/* for the average - if pcpu_rx_stats isn't set - rxstats must point to |
|
* the sta->rx_stats struct, so the check here is fine with and without |
|
* pcpu statistics |
|
*/ |
|
if (last_rxstats->chains && |
|
!(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL) | |
|
BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)))) { |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL); |
|
if (!sta->pcpu_rx_stats) |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG); |
|
|
|
sinfo->chains = last_rxstats->chains; |
|
|
|
for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { |
|
sinfo->chain_signal[i] = |
|
last_rxstats->chain_signal_last[i]; |
|
sinfo->chain_signal_avg[i] = |
|
-ewma_signal_read(&sta->rx_stats_avg.chain_signal[i]); |
|
} |
|
} |
|
|
|
if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) { |
|
sta_set_rate_info_tx(sta, &sta->tx_stats.last_rate, |
|
&sinfo->txrate); |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); |
|
} |
|
|
|
if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE))) { |
|
if (sta_set_rate_info_rx(sta, &sinfo->rxrate) == 0) |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BITRATE); |
|
} |
|
|
|
if (tidstats && !cfg80211_sinfo_alloc_tid_stats(sinfo, GFP_KERNEL)) { |
|
for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) |
|
sta_set_tidstats(sta, &sinfo->pertid[i], i); |
|
} |
|
|
|
if (ieee80211_vif_is_mesh(&sdata->vif)) { |
|
#ifdef CONFIG_MAC80211_MESH |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_LLID) | |
|
BIT_ULL(NL80211_STA_INFO_PLID) | |
|
BIT_ULL(NL80211_STA_INFO_PLINK_STATE) | |
|
BIT_ULL(NL80211_STA_INFO_LOCAL_PM) | |
|
BIT_ULL(NL80211_STA_INFO_PEER_PM) | |
|
BIT_ULL(NL80211_STA_INFO_NONPEER_PM) | |
|
BIT_ULL(NL80211_STA_INFO_CONNECTED_TO_GATE) | |
|
BIT_ULL(NL80211_STA_INFO_CONNECTED_TO_AS); |
|
|
|
sinfo->llid = sta->mesh->llid; |
|
sinfo->plid = sta->mesh->plid; |
|
sinfo->plink_state = sta->mesh->plink_state; |
|
if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_T_OFFSET); |
|
sinfo->t_offset = sta->mesh->t_offset; |
|
} |
|
sinfo->local_pm = sta->mesh->local_pm; |
|
sinfo->peer_pm = sta->mesh->peer_pm; |
|
sinfo->nonpeer_pm = sta->mesh->nonpeer_pm; |
|
sinfo->connected_to_gate = sta->mesh->connected_to_gate; |
|
sinfo->connected_to_as = sta->mesh->connected_to_as; |
|
#endif |
|
} |
|
|
|
sinfo->bss_param.flags = 0; |
|
if (sdata->vif.bss_conf.use_cts_prot) |
|
sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; |
|
if (sdata->vif.bss_conf.use_short_preamble) |
|
sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; |
|
if (sdata->vif.bss_conf.use_short_slot) |
|
sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; |
|
sinfo->bss_param.dtim_period = sdata->vif.bss_conf.dtim_period; |
|
sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; |
|
|
|
sinfo->sta_flags.set = 0; |
|
sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | |
|
BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | |
|
BIT(NL80211_STA_FLAG_WME) | |
|
BIT(NL80211_STA_FLAG_MFP) | |
|
BIT(NL80211_STA_FLAG_AUTHENTICATED) | |
|
BIT(NL80211_STA_FLAG_ASSOCIATED) | |
|
BIT(NL80211_STA_FLAG_TDLS_PEER); |
|
if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) |
|
sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); |
|
if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) |
|
sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); |
|
if (sta->sta.wme) |
|
sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); |
|
if (test_sta_flag(sta, WLAN_STA_MFP)) |
|
sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); |
|
if (test_sta_flag(sta, WLAN_STA_AUTH)) |
|
sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); |
|
if (test_sta_flag(sta, WLAN_STA_ASSOC)) |
|
sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); |
|
if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) |
|
sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); |
|
|
|
thr = sta_get_expected_throughput(sta); |
|
|
|
if (thr != 0) { |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_EXPECTED_THROUGHPUT); |
|
sinfo->expected_throughput = thr; |
|
} |
|
|
|
if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL)) && |
|
sta->status_stats.ack_signal_filled) { |
|
sinfo->ack_signal = sta->status_stats.last_ack_signal; |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL); |
|
} |
|
|
|
if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG)) && |
|
sta->status_stats.ack_signal_filled) { |
|
sinfo->avg_ack_signal = |
|
-(s8)ewma_avg_signal_read( |
|
&sta->status_stats.avg_ack_signal); |
|
sinfo->filled |= |
|
BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG); |
|
} |
|
|
|
if (ieee80211_vif_is_mesh(&sdata->vif)) { |
|
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_AIRTIME_LINK_METRIC); |
|
sinfo->airtime_link_metric = |
|
airtime_link_metric_get(local, sta); |
|
} |
|
} |
|
|
|
u32 sta_get_expected_throughput(struct sta_info *sta) |
|
{ |
|
struct ieee80211_sub_if_data *sdata = sta->sdata; |
|
struct ieee80211_local *local = sdata->local; |
|
struct rate_control_ref *ref = NULL; |
|
u32 thr = 0; |
|
|
|
if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) |
|
ref = local->rate_ctrl; |
|
|
|
/* check if the driver has a SW RC implementation */ |
|
if (ref && ref->ops->get_expected_throughput) |
|
thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv); |
|
else |
|
thr = drv_get_expected_throughput(local, sta); |
|
|
|
return thr; |
|
} |
|
|
|
unsigned long ieee80211_sta_last_active(struct sta_info *sta) |
|
{ |
|
struct ieee80211_sta_rx_stats *stats = sta_get_last_rx_stats(sta); |
|
|
|
if (!sta->status_stats.last_ack || |
|
time_after(stats->last_rx, sta->status_stats.last_ack)) |
|
return stats->last_rx; |
|
return sta->status_stats.last_ack; |
|
} |
|
|
|
static void sta_update_codel_params(struct sta_info *sta, u32 thr) |
|
{ |
|
if (!sta->sdata->local->ops->wake_tx_queue) |
|
return; |
|
|
|
if (thr && thr < STA_SLOW_THRESHOLD * sta->local->num_sta) { |
|
sta->cparams.target = MS2TIME(50); |
|
sta->cparams.interval = MS2TIME(300); |
|
sta->cparams.ecn = false; |
|
} else { |
|
sta->cparams.target = MS2TIME(20); |
|
sta->cparams.interval = MS2TIME(100); |
|
sta->cparams.ecn = true; |
|
} |
|
} |
|
|
|
void ieee80211_sta_set_expected_throughput(struct ieee80211_sta *pubsta, |
|
u32 thr) |
|
{ |
|
struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
|
|
|
sta_update_codel_params(sta, thr); |
|
}
|
|
|