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1286 lines
37 KiB
1286 lines
37 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 2005-2006, Devicescape Software, Inc. |
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* Copyright 2006-2007 Jiri Benc <[email protected]> |
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* Copyright 2008-2010 Johannes Berg <[email protected]> |
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* Copyright 2013-2014 Intel Mobile Communications GmbH |
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*/ |
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|
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#include <linux/export.h> |
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#include <linux/etherdevice.h> |
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#include <net/mac80211.h> |
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#include <asm/unaligned.h> |
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#include "ieee80211_i.h" |
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#include "rate.h" |
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#include "mesh.h" |
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#include "led.h" |
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#include "wme.h" |
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|
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|
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void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
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struct sk_buff *skb) |
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{ |
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struct ieee80211_local *local = hw_to_local(hw); |
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
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int tmp; |
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|
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skb->pkt_type = IEEE80211_TX_STATUS_MSG; |
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skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ? |
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&local->skb_queue : &local->skb_queue_unreliable, skb); |
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tmp = skb_queue_len(&local->skb_queue) + |
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skb_queue_len(&local->skb_queue_unreliable); |
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while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && |
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(skb = skb_dequeue(&local->skb_queue_unreliable))) { |
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ieee80211_free_txskb(hw, skb); |
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tmp--; |
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I802_DEBUG_INC(local->tx_status_drop); |
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} |
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tasklet_schedule(&local->tasklet); |
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} |
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EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); |
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|
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static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
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struct sta_info *sta, |
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struct sk_buff *skb) |
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{ |
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
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struct ieee80211_hdr *hdr = (void *)skb->data; |
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int ac; |
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|
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if (info->flags & (IEEE80211_TX_CTL_NO_PS_BUFFER | |
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IEEE80211_TX_CTL_AMPDU | |
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IEEE80211_TX_CTL_HW_80211_ENCAP)) { |
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ieee80211_free_txskb(&local->hw, skb); |
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return; |
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} |
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|
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/* |
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* This skb 'survived' a round-trip through the driver, and |
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* hopefully the driver didn't mangle it too badly. However, |
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* we can definitely not rely on the control information |
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* being correct. Clear it so we don't get junk there, and |
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* indicate that it needs new processing, but must not be |
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* modified/encrypted again. |
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*/ |
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memset(&info->control, 0, sizeof(info->control)); |
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|
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info->control.jiffies = jiffies; |
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info->control.vif = &sta->sdata->vif; |
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info->control.flags |= IEEE80211_TX_INTCFL_NEED_TXPROCESSING; |
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info->flags |= IEEE80211_TX_INTFL_RETRANSMISSION; |
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info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS; |
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|
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sta->status_stats.filtered++; |
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|
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/* |
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* Clear more-data bit on filtered frames, it might be set |
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* but later frames might time out so it might have to be |
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* clear again ... It's all rather unlikely (this frame |
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* should time out first, right?) but let's not confuse |
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* peers unnecessarily. |
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*/ |
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if (hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) |
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hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_MOREDATA); |
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|
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if (ieee80211_is_data_qos(hdr->frame_control)) { |
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u8 *p = ieee80211_get_qos_ctl(hdr); |
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int tid = *p & IEEE80211_QOS_CTL_TID_MASK; |
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|
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/* |
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* Clear EOSP if set, this could happen e.g. |
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* if an absence period (us being a P2P GO) |
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* shortens the SP. |
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*/ |
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if (*p & IEEE80211_QOS_CTL_EOSP) |
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*p &= ~IEEE80211_QOS_CTL_EOSP; |
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ac = ieee80211_ac_from_tid(tid); |
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} else { |
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ac = IEEE80211_AC_BE; |
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} |
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|
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/* |
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* Clear the TX filter mask for this STA when sending the next |
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* packet. If the STA went to power save mode, this will happen |
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* when it wakes up for the next time. |
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*/ |
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set_sta_flag(sta, WLAN_STA_CLEAR_PS_FILT); |
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ieee80211_clear_fast_xmit(sta); |
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|
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/* |
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* This code races in the following way: |
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* |
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* (1) STA sends frame indicating it will go to sleep and does so |
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* (2) hardware/firmware adds STA to filter list, passes frame up |
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* (3) hardware/firmware processes TX fifo and suppresses a frame |
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* (4) we get TX status before having processed the frame and |
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* knowing that the STA has gone to sleep. |
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* |
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* This is actually quite unlikely even when both those events are |
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* processed from interrupts coming in quickly after one another or |
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* even at the same time because we queue both TX status events and |
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* RX frames to be processed by a tasklet and process them in the |
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* same order that they were received or TX status last. Hence, there |
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* is no race as long as the frame RX is processed before the next TX |
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* status, which drivers can ensure, see below. |
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* |
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* Note that this can only happen if the hardware or firmware can |
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* actually add STAs to the filter list, if this is done by the |
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* driver in response to set_tim() (which will only reduce the race |
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* this whole filtering tries to solve, not completely solve it) |
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* this situation cannot happen. |
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* |
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* To completely solve this race drivers need to make sure that they |
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* (a) don't mix the irq-safe/not irq-safe TX status/RX processing |
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* functions and |
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* (b) always process RX events before TX status events if ordering |
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* can be unknown, for example with different interrupt status |
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* bits. |
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* (c) if PS mode transitions are manual (i.e. the flag |
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* %IEEE80211_HW_AP_LINK_PS is set), always process PS state |
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* changes before calling TX status events if ordering can be |
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* unknown. |
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*/ |
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if (test_sta_flag(sta, WLAN_STA_PS_STA) && |
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skb_queue_len(&sta->tx_filtered[ac]) < STA_MAX_TX_BUFFER) { |
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skb_queue_tail(&sta->tx_filtered[ac], skb); |
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sta_info_recalc_tim(sta); |
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|
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if (!timer_pending(&local->sta_cleanup)) |
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mod_timer(&local->sta_cleanup, |
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round_jiffies(jiffies + |
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STA_INFO_CLEANUP_INTERVAL)); |
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return; |
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} |
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|
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if (!test_sta_flag(sta, WLAN_STA_PS_STA) && |
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!(info->flags & IEEE80211_TX_INTFL_RETRIED)) { |
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/* Software retry the packet once */ |
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info->flags |= IEEE80211_TX_INTFL_RETRIED; |
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ieee80211_add_pending_skb(local, skb); |
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return; |
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} |
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|
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ps_dbg_ratelimited(sta->sdata, |
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"dropped TX filtered frame, queue_len=%d PS=%d @%lu\n", |
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skb_queue_len(&sta->tx_filtered[ac]), |
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!!test_sta_flag(sta, WLAN_STA_PS_STA), jiffies); |
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ieee80211_free_txskb(&local->hw, skb); |
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} |
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|
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static void ieee80211_check_pending_bar(struct sta_info *sta, u8 *addr, u8 tid) |
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{ |
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struct tid_ampdu_tx *tid_tx; |
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|
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tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]); |
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if (!tid_tx || !tid_tx->bar_pending) |
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return; |
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tid_tx->bar_pending = false; |
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ieee80211_send_bar(&sta->sdata->vif, addr, tid, tid_tx->failed_bar_ssn); |
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} |
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|
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static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb) |
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{ |
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struct ieee80211_mgmt *mgmt = (void *) skb->data; |
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struct ieee80211_local *local = sta->local; |
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struct ieee80211_sub_if_data *sdata = sta->sdata; |
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|
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if (ieee80211_is_data_qos(mgmt->frame_control)) { |
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struct ieee80211_hdr *hdr = (void *) skb->data; |
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u8 *qc = ieee80211_get_qos_ctl(hdr); |
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u16 tid = qc[0] & 0xf; |
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ieee80211_check_pending_bar(sta, hdr->addr1, tid); |
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} |
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if (ieee80211_is_action(mgmt->frame_control) && |
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!ieee80211_has_protected(mgmt->frame_control) && |
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mgmt->u.action.category == WLAN_CATEGORY_HT && |
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mgmt->u.action.u.ht_smps.action == WLAN_HT_ACTION_SMPS && |
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ieee80211_sdata_running(sdata)) { |
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enum ieee80211_smps_mode smps_mode; |
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|
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switch (mgmt->u.action.u.ht_smps.smps_control) { |
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case WLAN_HT_SMPS_CONTROL_DYNAMIC: |
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smps_mode = IEEE80211_SMPS_DYNAMIC; |
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break; |
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case WLAN_HT_SMPS_CONTROL_STATIC: |
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smps_mode = IEEE80211_SMPS_STATIC; |
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break; |
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case WLAN_HT_SMPS_CONTROL_DISABLED: |
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default: /* shouldn't happen since we don't send that */ |
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smps_mode = IEEE80211_SMPS_OFF; |
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break; |
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} |
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if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
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/* |
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* This update looks racy, but isn't -- if we come |
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* here we've definitely got a station that we're |
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* talking to, and on a managed interface that can |
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* only be the AP. And the only other place updating |
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* this variable in managed mode is before association. |
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*/ |
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sdata->smps_mode = smps_mode; |
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ieee80211_queue_work(&local->hw, &sdata->recalc_smps); |
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} else if (sdata->vif.type == NL80211_IFTYPE_AP || |
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sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
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sta->known_smps_mode = smps_mode; |
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} |
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} |
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} |
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|
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static void ieee80211_set_bar_pending(struct sta_info *sta, u8 tid, u16 ssn) |
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{ |
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struct tid_ampdu_tx *tid_tx; |
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|
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tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]); |
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if (!tid_tx) |
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return; |
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tid_tx->failed_bar_ssn = ssn; |
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tid_tx->bar_pending = true; |
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} |
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static int ieee80211_tx_radiotap_len(struct ieee80211_tx_info *info, |
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struct ieee80211_tx_status *status) |
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{ |
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int len = sizeof(struct ieee80211_radiotap_header); |
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|
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/* IEEE80211_RADIOTAP_RATE rate */ |
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if (status && status->rate && !(status->rate->flags & |
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(RATE_INFO_FLAGS_MCS | |
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RATE_INFO_FLAGS_DMG | |
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RATE_INFO_FLAGS_EDMG | |
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RATE_INFO_FLAGS_VHT_MCS | |
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RATE_INFO_FLAGS_HE_MCS))) |
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len += 2; |
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else if (info->status.rates[0].idx >= 0 && |
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!(info->status.rates[0].flags & |
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(IEEE80211_TX_RC_MCS | IEEE80211_TX_RC_VHT_MCS))) |
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len += 2; |
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|
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/* IEEE80211_RADIOTAP_TX_FLAGS */ |
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len += 2; |
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/* IEEE80211_RADIOTAP_DATA_RETRIES */ |
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len += 1; |
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|
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/* IEEE80211_RADIOTAP_MCS |
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* IEEE80211_RADIOTAP_VHT */ |
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if (status && status->rate) { |
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if (status->rate->flags & RATE_INFO_FLAGS_MCS) |
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len += 3; |
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else if (status->rate->flags & RATE_INFO_FLAGS_VHT_MCS) |
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len = ALIGN(len, 2) + 12; |
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else if (status->rate->flags & RATE_INFO_FLAGS_HE_MCS) |
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len = ALIGN(len, 2) + 12; |
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} else if (info->status.rates[0].idx >= 0) { |
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if (info->status.rates[0].flags & IEEE80211_TX_RC_MCS) |
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len += 3; |
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else if (info->status.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) |
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len = ALIGN(len, 2) + 12; |
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} |
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return len; |
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} |
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static void |
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ieee80211_add_tx_radiotap_header(struct ieee80211_local *local, |
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struct ieee80211_supported_band *sband, |
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struct sk_buff *skb, int retry_count, |
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int rtap_len, int shift, |
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struct ieee80211_tx_status *status) |
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{ |
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
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struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
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struct ieee80211_radiotap_header *rthdr; |
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unsigned char *pos; |
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u16 legacy_rate = 0; |
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u16 txflags; |
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rthdr = skb_push(skb, rtap_len); |
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memset(rthdr, 0, rtap_len); |
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rthdr->it_len = cpu_to_le16(rtap_len); |
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rthdr->it_present = |
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cpu_to_le32(BIT(IEEE80211_RADIOTAP_TX_FLAGS) | |
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BIT(IEEE80211_RADIOTAP_DATA_RETRIES)); |
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pos = (unsigned char *)(rthdr + 1); |
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|
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/* |
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* XXX: Once radiotap gets the bitmap reset thing the vendor |
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* extensions proposal contains, we can actually report |
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* the whole set of tries we did. |
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*/ |
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|
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/* IEEE80211_RADIOTAP_RATE */ |
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|
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if (status && status->rate) { |
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if (!(status->rate->flags & (RATE_INFO_FLAGS_MCS | |
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RATE_INFO_FLAGS_DMG | |
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RATE_INFO_FLAGS_EDMG | |
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RATE_INFO_FLAGS_VHT_MCS | |
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RATE_INFO_FLAGS_HE_MCS))) |
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legacy_rate = status->rate->legacy; |
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} else if (info->status.rates[0].idx >= 0 && |
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!(info->status.rates[0].flags & (IEEE80211_TX_RC_MCS | |
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IEEE80211_TX_RC_VHT_MCS))) |
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legacy_rate = |
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sband->bitrates[info->status.rates[0].idx].bitrate; |
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|
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if (legacy_rate) { |
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rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_RATE)); |
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*pos = DIV_ROUND_UP(legacy_rate, 5 * (1 << shift)); |
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/* padding for tx flags */ |
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pos += 2; |
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} |
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|
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/* IEEE80211_RADIOTAP_TX_FLAGS */ |
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txflags = 0; |
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if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
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!is_multicast_ether_addr(hdr->addr1)) |
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txflags |= IEEE80211_RADIOTAP_F_TX_FAIL; |
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|
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if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) |
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txflags |= IEEE80211_RADIOTAP_F_TX_CTS; |
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if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) |
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txflags |= IEEE80211_RADIOTAP_F_TX_RTS; |
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|
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put_unaligned_le16(txflags, pos); |
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pos += 2; |
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|
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/* IEEE80211_RADIOTAP_DATA_RETRIES */ |
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/* for now report the total retry_count */ |
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*pos = retry_count; |
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pos++; |
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|
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if (status && status->rate && |
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(status->rate->flags & RATE_INFO_FLAGS_MCS)) { |
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rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_MCS)); |
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pos[0] = IEEE80211_RADIOTAP_MCS_HAVE_MCS | |
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IEEE80211_RADIOTAP_MCS_HAVE_GI | |
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IEEE80211_RADIOTAP_MCS_HAVE_BW; |
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if (status->rate->flags & RATE_INFO_FLAGS_SHORT_GI) |
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pos[1] |= IEEE80211_RADIOTAP_MCS_SGI; |
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if (status->rate->bw == RATE_INFO_BW_40) |
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pos[1] |= IEEE80211_RADIOTAP_MCS_BW_40; |
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pos[2] = status->rate->mcs; |
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pos += 3; |
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} else if (status && status->rate && |
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(status->rate->flags & RATE_INFO_FLAGS_VHT_MCS)) { |
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u16 known = local->hw.radiotap_vht_details & |
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(IEEE80211_RADIOTAP_VHT_KNOWN_GI | |
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IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH); |
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|
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rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_VHT)); |
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|
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/* required alignment from rthdr */ |
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pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2); |
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|
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/* u16 known - IEEE80211_RADIOTAP_VHT_KNOWN_* */ |
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put_unaligned_le16(known, pos); |
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pos += 2; |
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|
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/* u8 flags - IEEE80211_RADIOTAP_VHT_FLAG_* */ |
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if (status->rate->flags & RATE_INFO_FLAGS_SHORT_GI) |
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*pos |= IEEE80211_RADIOTAP_VHT_FLAG_SGI; |
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pos++; |
|
|
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/* u8 bandwidth */ |
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switch (status->rate->bw) { |
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case RATE_INFO_BW_160: |
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*pos = 11; |
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break; |
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case RATE_INFO_BW_80: |
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*pos = 4; |
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break; |
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case RATE_INFO_BW_40: |
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*pos = 1; |
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break; |
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default: |
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*pos = 0; |
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break; |
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} |
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pos++; |
|
|
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/* u8 mcs_nss[4] */ |
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*pos = (status->rate->mcs << 4) | status->rate->nss; |
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pos += 4; |
|
|
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/* u8 coding */ |
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pos++; |
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/* u8 group_id */ |
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pos++; |
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/* u16 partial_aid */ |
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pos += 2; |
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} else if (status && status->rate && |
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(status->rate->flags & RATE_INFO_FLAGS_HE_MCS)) { |
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struct ieee80211_radiotap_he *he; |
|
|
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rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_HE)); |
|
|
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/* required alignment from rthdr */ |
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pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2); |
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he = (struct ieee80211_radiotap_he *)pos; |
|
|
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he->data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_SU | |
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IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN | |
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IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN | |
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IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN); |
|
|
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he->data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN); |
|
|
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#define HE_PREP(f, val) le16_encode_bits(val, IEEE80211_RADIOTAP_HE_##f) |
|
|
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he->data6 |= HE_PREP(DATA6_NSTS, status->rate->nss); |
|
|
|
#define CHECK_GI(s) \ |
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BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA5_GI_##s != \ |
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(int)NL80211_RATE_INFO_HE_GI_##s) |
|
|
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CHECK_GI(0_8); |
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CHECK_GI(1_6); |
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CHECK_GI(3_2); |
|
|
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he->data3 |= HE_PREP(DATA3_DATA_MCS, status->rate->mcs); |
|
he->data3 |= HE_PREP(DATA3_DATA_DCM, status->rate->he_dcm); |
|
|
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he->data5 |= HE_PREP(DATA5_GI, status->rate->he_gi); |
|
|
|
switch (status->rate->bw) { |
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case RATE_INFO_BW_20: |
|
he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, |
|
IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_20MHZ); |
|
break; |
|
case RATE_INFO_BW_40: |
|
he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, |
|
IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_40MHZ); |
|
break; |
|
case RATE_INFO_BW_80: |
|
he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, |
|
IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_80MHZ); |
|
break; |
|
case RATE_INFO_BW_160: |
|
he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, |
|
IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_160MHZ); |
|
break; |
|
case RATE_INFO_BW_HE_RU: |
|
#define CHECK_RU_ALLOC(s) \ |
|
BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_##s##T != \ |
|
NL80211_RATE_INFO_HE_RU_ALLOC_##s + 4) |
|
|
|
CHECK_RU_ALLOC(26); |
|
CHECK_RU_ALLOC(52); |
|
CHECK_RU_ALLOC(106); |
|
CHECK_RU_ALLOC(242); |
|
CHECK_RU_ALLOC(484); |
|
CHECK_RU_ALLOC(996); |
|
CHECK_RU_ALLOC(2x996); |
|
|
|
he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, |
|
status->rate->he_ru_alloc + 4); |
|
break; |
|
default: |
|
WARN_ONCE(1, "Invalid SU BW %d\n", status->rate->bw); |
|
} |
|
|
|
pos += sizeof(struct ieee80211_radiotap_he); |
|
} |
|
|
|
if ((status && status->rate) || info->status.rates[0].idx < 0) |
|
return; |
|
|
|
/* IEEE80211_RADIOTAP_MCS |
|
* IEEE80211_RADIOTAP_VHT */ |
|
if (info->status.rates[0].flags & IEEE80211_TX_RC_MCS) { |
|
rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_MCS)); |
|
pos[0] = IEEE80211_RADIOTAP_MCS_HAVE_MCS | |
|
IEEE80211_RADIOTAP_MCS_HAVE_GI | |
|
IEEE80211_RADIOTAP_MCS_HAVE_BW; |
|
if (info->status.rates[0].flags & IEEE80211_TX_RC_SHORT_GI) |
|
pos[1] |= IEEE80211_RADIOTAP_MCS_SGI; |
|
if (info->status.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) |
|
pos[1] |= IEEE80211_RADIOTAP_MCS_BW_40; |
|
if (info->status.rates[0].flags & IEEE80211_TX_RC_GREEN_FIELD) |
|
pos[1] |= IEEE80211_RADIOTAP_MCS_FMT_GF; |
|
pos[2] = info->status.rates[0].idx; |
|
pos += 3; |
|
} else if (info->status.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) { |
|
u16 known = local->hw.radiotap_vht_details & |
|
(IEEE80211_RADIOTAP_VHT_KNOWN_GI | |
|
IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH); |
|
|
|
rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_VHT)); |
|
|
|
/* required alignment from rthdr */ |
|
pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2); |
|
|
|
/* u16 known - IEEE80211_RADIOTAP_VHT_KNOWN_* */ |
|
put_unaligned_le16(known, pos); |
|
pos += 2; |
|
|
|
/* u8 flags - IEEE80211_RADIOTAP_VHT_FLAG_* */ |
|
if (info->status.rates[0].flags & IEEE80211_TX_RC_SHORT_GI) |
|
*pos |= IEEE80211_RADIOTAP_VHT_FLAG_SGI; |
|
pos++; |
|
|
|
/* u8 bandwidth */ |
|
if (info->status.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) |
|
*pos = 1; |
|
else if (info->status.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH) |
|
*pos = 4; |
|
else if (info->status.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH) |
|
*pos = 11; |
|
else /* IEEE80211_TX_RC_{20_MHZ_WIDTH,FIXME:DUP_DATA} */ |
|
*pos = 0; |
|
pos++; |
|
|
|
/* u8 mcs_nss[4] */ |
|
*pos = (ieee80211_rate_get_vht_mcs(&info->status.rates[0]) << 4) | |
|
ieee80211_rate_get_vht_nss(&info->status.rates[0]); |
|
pos += 4; |
|
|
|
/* u8 coding */ |
|
pos++; |
|
/* u8 group_id */ |
|
pos++; |
|
/* u16 partial_aid */ |
|
pos += 2; |
|
} |
|
} |
|
|
|
/* |
|
* Handles the tx for TDLS teardown frames. |
|
* If the frame wasn't ACKed by the peer - it will be re-sent through the AP |
|
*/ |
|
static void ieee80211_tdls_td_tx_handle(struct ieee80211_local *local, |
|
struct ieee80211_sub_if_data *sdata, |
|
struct sk_buff *skb, u32 flags) |
|
{ |
|
struct sk_buff *teardown_skb; |
|
struct sk_buff *orig_teardown_skb; |
|
bool is_teardown = false; |
|
|
|
/* Get the teardown data we need and free the lock */ |
|
spin_lock(&sdata->u.mgd.teardown_lock); |
|
teardown_skb = sdata->u.mgd.teardown_skb; |
|
orig_teardown_skb = sdata->u.mgd.orig_teardown_skb; |
|
if ((skb == orig_teardown_skb) && teardown_skb) { |
|
sdata->u.mgd.teardown_skb = NULL; |
|
sdata->u.mgd.orig_teardown_skb = NULL; |
|
is_teardown = true; |
|
} |
|
spin_unlock(&sdata->u.mgd.teardown_lock); |
|
|
|
if (is_teardown) { |
|
/* This mechanism relies on being able to get ACKs */ |
|
WARN_ON(!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)); |
|
|
|
/* Check if peer has ACKed */ |
|
if (flags & IEEE80211_TX_STAT_ACK) { |
|
dev_kfree_skb_any(teardown_skb); |
|
} else { |
|
tdls_dbg(sdata, |
|
"TDLS Resending teardown through AP\n"); |
|
|
|
ieee80211_subif_start_xmit(teardown_skb, skb->dev); |
|
} |
|
} |
|
} |
|
|
|
static struct ieee80211_sub_if_data * |
|
ieee80211_sdata_from_skb(struct ieee80211_local *local, struct sk_buff *skb) |
|
{ |
|
struct ieee80211_sub_if_data *sdata; |
|
|
|
if (skb->dev) { |
|
list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
|
if (!sdata->dev) |
|
continue; |
|
|
|
if (skb->dev == sdata->dev) |
|
return sdata; |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
return rcu_dereference(local->p2p_sdata); |
|
} |
|
|
|
static void ieee80211_report_ack_skb(struct ieee80211_local *local, |
|
struct ieee80211_tx_info *info, |
|
bool acked, bool dropped) |
|
{ |
|
struct sk_buff *skb; |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&local->ack_status_lock, flags); |
|
skb = idr_remove(&local->ack_status_frames, info->ack_frame_id); |
|
spin_unlock_irqrestore(&local->ack_status_lock, flags); |
|
|
|
if (!skb) |
|
return; |
|
|
|
if (info->flags & IEEE80211_TX_INTFL_NL80211_FRAME_TX) { |
|
u64 cookie = IEEE80211_SKB_CB(skb)->ack.cookie; |
|
struct ieee80211_sub_if_data *sdata; |
|
struct ieee80211_hdr *hdr = (void *)skb->data; |
|
|
|
rcu_read_lock(); |
|
sdata = ieee80211_sdata_from_skb(local, skb); |
|
if (sdata) { |
|
if (skb->protocol == sdata->control_port_protocol || |
|
skb->protocol == cpu_to_be16(ETH_P_PREAUTH)) |
|
cfg80211_control_port_tx_status(&sdata->wdev, |
|
cookie, |
|
skb->data, |
|
skb->len, |
|
acked, |
|
GFP_ATOMIC); |
|
else if (ieee80211_is_any_nullfunc(hdr->frame_control)) |
|
cfg80211_probe_status(sdata->dev, hdr->addr1, |
|
cookie, acked, |
|
info->status.ack_signal, |
|
info->status.is_valid_ack_signal, |
|
GFP_ATOMIC); |
|
else if (ieee80211_is_mgmt(hdr->frame_control)) |
|
cfg80211_mgmt_tx_status(&sdata->wdev, cookie, |
|
skb->data, skb->len, |
|
acked, GFP_ATOMIC); |
|
else |
|
pr_warn("Unknown status report in ack skb\n"); |
|
|
|
} |
|
rcu_read_unlock(); |
|
|
|
dev_kfree_skb_any(skb); |
|
} else if (dropped) { |
|
dev_kfree_skb_any(skb); |
|
} else { |
|
/* consumes skb */ |
|
skb_complete_wifi_ack(skb, acked); |
|
} |
|
} |
|
|
|
static void ieee80211_report_used_skb(struct ieee80211_local *local, |
|
struct sk_buff *skb, bool dropped) |
|
{ |
|
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
|
u16 tx_time_est = ieee80211_info_get_tx_time_est(info); |
|
struct ieee80211_hdr *hdr = (void *)skb->data; |
|
bool acked = info->flags & IEEE80211_TX_STAT_ACK; |
|
|
|
if (dropped) |
|
acked = false; |
|
|
|
if (tx_time_est) { |
|
struct sta_info *sta; |
|
|
|
rcu_read_lock(); |
|
|
|
sta = sta_info_get_by_addrs(local, hdr->addr1, hdr->addr2); |
|
ieee80211_sta_update_pending_airtime(local, sta, |
|
skb_get_queue_mapping(skb), |
|
tx_time_est, |
|
true); |
|
rcu_read_unlock(); |
|
} |
|
|
|
if (info->flags & IEEE80211_TX_INTFL_MLME_CONN_TX) { |
|
struct ieee80211_sub_if_data *sdata; |
|
|
|
rcu_read_lock(); |
|
|
|
sdata = ieee80211_sdata_from_skb(local, skb); |
|
|
|
if (!sdata) { |
|
skb->dev = NULL; |
|
} else { |
|
unsigned int hdr_size = |
|
ieee80211_hdrlen(hdr->frame_control); |
|
|
|
/* Check to see if packet is a TDLS teardown packet */ |
|
if (ieee80211_is_data(hdr->frame_control) && |
|
(ieee80211_get_tdls_action(skb, hdr_size) == |
|
WLAN_TDLS_TEARDOWN)) { |
|
ieee80211_tdls_td_tx_handle(local, sdata, skb, |
|
info->flags); |
|
} else if (ieee80211_s1g_is_twt_setup(skb)) { |
|
if (!acked) { |
|
struct sk_buff *qskb; |
|
|
|
qskb = skb_clone(skb, GFP_ATOMIC); |
|
if (qskb) { |
|
skb_queue_tail(&sdata->status_queue, |
|
qskb); |
|
ieee80211_queue_work(&local->hw, |
|
&sdata->work); |
|
} |
|
} |
|
} else { |
|
ieee80211_mgd_conn_tx_status(sdata, |
|
hdr->frame_control, |
|
acked); |
|
} |
|
} |
|
|
|
rcu_read_unlock(); |
|
} else if (info->ack_frame_id) { |
|
ieee80211_report_ack_skb(local, info, acked, dropped); |
|
} |
|
|
|
if (!dropped && skb->destructor) { |
|
skb->wifi_acked_valid = 1; |
|
skb->wifi_acked = acked; |
|
} |
|
|
|
ieee80211_led_tx(local); |
|
|
|
if (skb_has_frag_list(skb)) { |
|
kfree_skb_list(skb_shinfo(skb)->frag_list); |
|
skb_shinfo(skb)->frag_list = NULL; |
|
} |
|
} |
|
|
|
/* |
|
* Use a static threshold for now, best value to be determined |
|
* by testing ... |
|
* Should it depend on: |
|
* - on # of retransmissions |
|
* - current throughput (higher value for higher tpt)? |
|
*/ |
|
#define STA_LOST_PKT_THRESHOLD 50 |
|
#define STA_LOST_PKT_TIME HZ /* 1 sec since last ACK */ |
|
#define STA_LOST_TDLS_PKT_THRESHOLD 10 |
|
#define STA_LOST_TDLS_PKT_TIME (10*HZ) /* 10secs since last ACK */ |
|
|
|
static void ieee80211_lost_packet(struct sta_info *sta, |
|
struct ieee80211_tx_info *info) |
|
{ |
|
unsigned long pkt_time = STA_LOST_PKT_TIME; |
|
unsigned int pkt_thr = STA_LOST_PKT_THRESHOLD; |
|
|
|
/* If driver relies on its own algorithm for station kickout, skip |
|
* mac80211 packet loss mechanism. |
|
*/ |
|
if (ieee80211_hw_check(&sta->local->hw, REPORTS_LOW_ACK)) |
|
return; |
|
|
|
/* This packet was aggregated but doesn't carry status info */ |
|
if ((info->flags & IEEE80211_TX_CTL_AMPDU) && |
|
!(info->flags & IEEE80211_TX_STAT_AMPDU)) |
|
return; |
|
|
|
sta->status_stats.lost_packets++; |
|
if (sta->sta.tdls) { |
|
pkt_time = STA_LOST_TDLS_PKT_TIME; |
|
pkt_thr = STA_LOST_PKT_THRESHOLD; |
|
} |
|
|
|
/* |
|
* If we're in TDLS mode, make sure that all STA_LOST_TDLS_PKT_THRESHOLD |
|
* of the last packets were lost, and that no ACK was received in the |
|
* last STA_LOST_TDLS_PKT_TIME ms, before triggering the CQM packet-loss |
|
* mechanism. |
|
* For non-TDLS, use STA_LOST_PKT_THRESHOLD and STA_LOST_PKT_TIME |
|
*/ |
|
if (sta->status_stats.lost_packets < pkt_thr || |
|
!time_after(jiffies, sta->status_stats.last_pkt_time + pkt_time)) |
|
return; |
|
|
|
cfg80211_cqm_pktloss_notify(sta->sdata->dev, sta->sta.addr, |
|
sta->status_stats.lost_packets, GFP_ATOMIC); |
|
sta->status_stats.lost_packets = 0; |
|
} |
|
|
|
static int ieee80211_tx_get_rates(struct ieee80211_hw *hw, |
|
struct ieee80211_tx_info *info, |
|
int *retry_count) |
|
{ |
|
int count = -1; |
|
int i; |
|
|
|
for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { |
|
if ((info->flags & IEEE80211_TX_CTL_AMPDU) && |
|
!(info->flags & IEEE80211_TX_STAT_AMPDU)) { |
|
/* just the first aggr frame carry status info */ |
|
info->status.rates[i].idx = -1; |
|
info->status.rates[i].count = 0; |
|
break; |
|
} else if (info->status.rates[i].idx < 0) { |
|
break; |
|
} else if (i >= hw->max_report_rates) { |
|
/* the HW cannot have attempted that rate */ |
|
info->status.rates[i].idx = -1; |
|
info->status.rates[i].count = 0; |
|
break; |
|
} |
|
|
|
count += info->status.rates[i].count; |
|
} |
|
|
|
if (count < 0) |
|
count = 0; |
|
|
|
*retry_count = count; |
|
return i - 1; |
|
} |
|
|
|
void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, |
|
struct ieee80211_supported_band *sband, |
|
int retry_count, int shift, bool send_to_cooked, |
|
struct ieee80211_tx_status *status) |
|
{ |
|
struct sk_buff *skb2; |
|
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
|
struct ieee80211_sub_if_data *sdata; |
|
struct net_device *prev_dev = NULL; |
|
int rtap_len; |
|
|
|
/* send frame to monitor interfaces now */ |
|
rtap_len = ieee80211_tx_radiotap_len(info, status); |
|
if (WARN_ON_ONCE(skb_headroom(skb) < rtap_len)) { |
|
pr_err("ieee80211_tx_status: headroom too small\n"); |
|
dev_kfree_skb(skb); |
|
return; |
|
} |
|
ieee80211_add_tx_radiotap_header(local, sband, skb, retry_count, |
|
rtap_len, shift, status); |
|
|
|
/* XXX: is this sufficient for BPF? */ |
|
skb_reset_mac_header(skb); |
|
skb->ip_summed = CHECKSUM_UNNECESSARY; |
|
skb->pkt_type = PACKET_OTHERHOST; |
|
skb->protocol = htons(ETH_P_802_2); |
|
memset(skb->cb, 0, sizeof(skb->cb)); |
|
|
|
rcu_read_lock(); |
|
list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
|
if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { |
|
if (!ieee80211_sdata_running(sdata)) |
|
continue; |
|
|
|
if ((sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) && |
|
!send_to_cooked) |
|
continue; |
|
|
|
if (prev_dev) { |
|
skb2 = skb_clone(skb, GFP_ATOMIC); |
|
if (skb2) { |
|
skb2->dev = prev_dev; |
|
netif_rx(skb2); |
|
} |
|
} |
|
|
|
prev_dev = sdata->dev; |
|
} |
|
} |
|
if (prev_dev) { |
|
skb->dev = prev_dev; |
|
netif_rx(skb); |
|
skb = NULL; |
|
} |
|
rcu_read_unlock(); |
|
dev_kfree_skb(skb); |
|
} |
|
|
|
static void __ieee80211_tx_status(struct ieee80211_hw *hw, |
|
struct ieee80211_tx_status *status, |
|
int rates_idx, int retry_count) |
|
{ |
|
struct sk_buff *skb = status->skb; |
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
struct ieee80211_tx_info *info = status->info; |
|
struct sta_info *sta; |
|
__le16 fc; |
|
struct ieee80211_supported_band *sband; |
|
bool send_to_cooked; |
|
bool acked; |
|
bool noack_success; |
|
struct ieee80211_bar *bar; |
|
int shift = 0; |
|
int tid = IEEE80211_NUM_TIDS; |
|
|
|
sband = local->hw.wiphy->bands[info->band]; |
|
fc = hdr->frame_control; |
|
|
|
if (status->sta) { |
|
sta = container_of(status->sta, struct sta_info, sta); |
|
shift = ieee80211_vif_get_shift(&sta->sdata->vif); |
|
|
|
if (info->flags & IEEE80211_TX_STATUS_EOSP) |
|
clear_sta_flag(sta, WLAN_STA_SP); |
|
|
|
acked = !!(info->flags & IEEE80211_TX_STAT_ACK); |
|
noack_success = !!(info->flags & |
|
IEEE80211_TX_STAT_NOACK_TRANSMITTED); |
|
|
|
/* mesh Peer Service Period support */ |
|
if (ieee80211_vif_is_mesh(&sta->sdata->vif) && |
|
ieee80211_is_data_qos(fc)) |
|
ieee80211_mpsp_trigger_process( |
|
ieee80211_get_qos_ctl(hdr), sta, true, acked); |
|
|
|
if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL) && |
|
(ieee80211_is_data(hdr->frame_control)) && |
|
(rates_idx != -1)) |
|
sta->tx_stats.last_rate = |
|
info->status.rates[rates_idx]; |
|
|
|
if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && |
|
(ieee80211_is_data_qos(fc))) { |
|
u16 ssn; |
|
u8 *qc; |
|
|
|
qc = ieee80211_get_qos_ctl(hdr); |
|
tid = qc[0] & 0xf; |
|
ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) |
|
& IEEE80211_SCTL_SEQ); |
|
ieee80211_send_bar(&sta->sdata->vif, hdr->addr1, |
|
tid, ssn); |
|
} else if (ieee80211_is_data_qos(fc)) { |
|
u8 *qc = ieee80211_get_qos_ctl(hdr); |
|
|
|
tid = qc[0] & 0xf; |
|
} |
|
|
|
if (!acked && ieee80211_is_back_req(fc)) { |
|
u16 control; |
|
|
|
/* |
|
* BAR failed, store the last SSN and retry sending |
|
* the BAR when the next unicast transmission on the |
|
* same TID succeeds. |
|
*/ |
|
bar = (struct ieee80211_bar *) skb->data; |
|
control = le16_to_cpu(bar->control); |
|
if (!(control & IEEE80211_BAR_CTRL_MULTI_TID)) { |
|
u16 ssn = le16_to_cpu(bar->start_seq_num); |
|
|
|
tid = (control & |
|
IEEE80211_BAR_CTRL_TID_INFO_MASK) >> |
|
IEEE80211_BAR_CTRL_TID_INFO_SHIFT; |
|
|
|
ieee80211_set_bar_pending(sta, tid, ssn); |
|
} |
|
} |
|
|
|
if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
|
ieee80211_handle_filtered_frame(local, sta, skb); |
|
return; |
|
} else if (ieee80211_is_data_present(fc)) { |
|
if (!acked && !noack_success) |
|
sta->status_stats.msdu_failed[tid]++; |
|
|
|
sta->status_stats.msdu_retries[tid] += |
|
retry_count; |
|
} |
|
|
|
if (!(info->flags & IEEE80211_TX_CTL_INJECTED) && acked) |
|
ieee80211_frame_acked(sta, skb); |
|
|
|
} else if (wiphy_ext_feature_isset(local->hw.wiphy, |
|
NL80211_EXT_FEATURE_AIRTIME_FAIRNESS)) { |
|
struct ieee80211_sub_if_data *sdata; |
|
struct ieee80211_txq *txq; |
|
u32 airtime; |
|
|
|
/* Account airtime to multicast queue */ |
|
sdata = ieee80211_sdata_from_skb(local, skb); |
|
|
|
if (sdata && (txq = sdata->vif.txq)) { |
|
airtime = info->status.tx_time ?: |
|
ieee80211_calc_expected_tx_airtime(hw, |
|
&sdata->vif, |
|
NULL, |
|
skb->len, |
|
false); |
|
|
|
ieee80211_register_airtime(txq, airtime, 0); |
|
} |
|
} |
|
|
|
/* SNMP counters |
|
* Fragments are passed to low-level drivers as separate skbs, so these |
|
* are actually fragments, not frames. Update frame counters only for |
|
* the first fragment of the frame. */ |
|
if ((info->flags & IEEE80211_TX_STAT_ACK) || |
|
(info->flags & IEEE80211_TX_STAT_NOACK_TRANSMITTED)) { |
|
if (ieee80211_is_first_frag(hdr->seq_ctrl)) { |
|
I802_DEBUG_INC(local->dot11TransmittedFrameCount); |
|
if (is_multicast_ether_addr(ieee80211_get_DA(hdr))) |
|
I802_DEBUG_INC(local->dot11MulticastTransmittedFrameCount); |
|
if (retry_count > 0) |
|
I802_DEBUG_INC(local->dot11RetryCount); |
|
if (retry_count > 1) |
|
I802_DEBUG_INC(local->dot11MultipleRetryCount); |
|
} |
|
|
|
/* This counter shall be incremented for an acknowledged MPDU |
|
* with an individual address in the address 1 field or an MPDU |
|
* with a multicast address in the address 1 field of type Data |
|
* or Management. */ |
|
if (!is_multicast_ether_addr(hdr->addr1) || |
|
ieee80211_is_data(fc) || |
|
ieee80211_is_mgmt(fc)) |
|
I802_DEBUG_INC(local->dot11TransmittedFragmentCount); |
|
} else { |
|
if (ieee80211_is_first_frag(hdr->seq_ctrl)) |
|
I802_DEBUG_INC(local->dot11FailedCount); |
|
} |
|
|
|
if (ieee80211_is_any_nullfunc(fc) && |
|
ieee80211_has_pm(fc) && |
|
ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) && |
|
!(info->flags & IEEE80211_TX_CTL_INJECTED) && |
|
local->ps_sdata && !(local->scanning)) { |
|
if (info->flags & IEEE80211_TX_STAT_ACK) |
|
local->ps_sdata->u.mgd.flags |= |
|
IEEE80211_STA_NULLFUNC_ACKED; |
|
mod_timer(&local->dynamic_ps_timer, |
|
jiffies + msecs_to_jiffies(10)); |
|
} |
|
|
|
ieee80211_report_used_skb(local, skb, false); |
|
|
|
/* this was a transmitted frame, but now we want to reuse it */ |
|
skb_orphan(skb); |
|
|
|
/* Need to make a copy before skb->cb gets cleared */ |
|
send_to_cooked = !!(info->flags & IEEE80211_TX_CTL_INJECTED) || |
|
!(ieee80211_is_data(fc)); |
|
|
|
/* |
|
* This is a bit racy but we can avoid a lot of work |
|
* with this test... |
|
*/ |
|
if (!local->monitors && (!send_to_cooked || !local->cooked_mntrs)) { |
|
if (status->free_list) |
|
list_add_tail(&skb->list, status->free_list); |
|
else |
|
dev_kfree_skb(skb); |
|
return; |
|
} |
|
|
|
/* send to monitor interfaces */ |
|
ieee80211_tx_monitor(local, skb, sband, retry_count, shift, |
|
send_to_cooked, status); |
|
} |
|
|
|
void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) |
|
{ |
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
struct ieee80211_tx_status status = { |
|
.skb = skb, |
|
.info = IEEE80211_SKB_CB(skb), |
|
}; |
|
struct sta_info *sta; |
|
|
|
rcu_read_lock(); |
|
|
|
sta = sta_info_get_by_addrs(local, hdr->addr1, hdr->addr2); |
|
if (sta) |
|
status.sta = &sta->sta; |
|
|
|
ieee80211_tx_status_ext(hw, &status); |
|
rcu_read_unlock(); |
|
} |
|
EXPORT_SYMBOL(ieee80211_tx_status); |
|
|
|
void ieee80211_tx_status_ext(struct ieee80211_hw *hw, |
|
struct ieee80211_tx_status *status) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
struct ieee80211_tx_info *info = status->info; |
|
struct ieee80211_sta *pubsta = status->sta; |
|
struct sk_buff *skb = status->skb; |
|
struct ieee80211_supported_band *sband; |
|
struct sta_info *sta = NULL; |
|
int rates_idx, retry_count; |
|
bool acked, noack_success; |
|
u16 tx_time_est; |
|
|
|
if (pubsta) { |
|
sta = container_of(pubsta, struct sta_info, sta); |
|
|
|
if (status->rate) |
|
sta->tx_stats.last_rate_info = *status->rate; |
|
} |
|
|
|
if (skb && (tx_time_est = |
|
ieee80211_info_get_tx_time_est(IEEE80211_SKB_CB(skb))) > 0) { |
|
/* Do this here to avoid the expensive lookup of the sta |
|
* in ieee80211_report_used_skb(). |
|
*/ |
|
ieee80211_sta_update_pending_airtime(local, sta, |
|
skb_get_queue_mapping(skb), |
|
tx_time_est, |
|
true); |
|
ieee80211_info_set_tx_time_est(IEEE80211_SKB_CB(skb), 0); |
|
} |
|
|
|
if (!status->info) |
|
goto free; |
|
|
|
rates_idx = ieee80211_tx_get_rates(hw, info, &retry_count); |
|
|
|
sband = hw->wiphy->bands[info->band]; |
|
|
|
acked = !!(info->flags & IEEE80211_TX_STAT_ACK); |
|
noack_success = !!(info->flags & IEEE80211_TX_STAT_NOACK_TRANSMITTED); |
|
|
|
if (pubsta) { |
|
struct ieee80211_sub_if_data *sdata = sta->sdata; |
|
|
|
if (!acked && !noack_success) |
|
sta->status_stats.retry_failed++; |
|
sta->status_stats.retry_count += retry_count; |
|
|
|
if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
|
if (sdata->vif.type == NL80211_IFTYPE_STATION && |
|
skb && !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP)) |
|
ieee80211_sta_tx_notify(sdata, (void *) skb->data, |
|
acked, info->status.tx_time); |
|
|
|
if (acked) { |
|
sta->status_stats.last_ack = jiffies; |
|
|
|
if (sta->status_stats.lost_packets) |
|
sta->status_stats.lost_packets = 0; |
|
|
|
/* Track when last packet was ACKed */ |
|
sta->status_stats.last_pkt_time = jiffies; |
|
|
|
/* Reset connection monitor */ |
|
if (sdata->vif.type == NL80211_IFTYPE_STATION && |
|
unlikely(sdata->u.mgd.probe_send_count > 0)) |
|
sdata->u.mgd.probe_send_count = 0; |
|
|
|
if (info->status.is_valid_ack_signal) { |
|
sta->status_stats.last_ack_signal = |
|
(s8)info->status.ack_signal; |
|
sta->status_stats.ack_signal_filled = true; |
|
ewma_avg_signal_add(&sta->status_stats.avg_ack_signal, |
|
-info->status.ack_signal); |
|
} |
|
} else if (test_sta_flag(sta, WLAN_STA_PS_STA)) { |
|
/* |
|
* The STA is in power save mode, so assume |
|
* that this TX packet failed because of that. |
|
*/ |
|
if (skb) |
|
ieee80211_handle_filtered_frame(local, sta, skb); |
|
return; |
|
} else if (noack_success) { |
|
/* nothing to do here, do not account as lost */ |
|
} else { |
|
ieee80211_lost_packet(sta, info); |
|
} |
|
} |
|
|
|
rate_control_tx_status(local, sband, status); |
|
if (ieee80211_vif_is_mesh(&sta->sdata->vif)) |
|
ieee80211s_update_metric(local, sta, status); |
|
} |
|
|
|
if (skb && !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP)) |
|
return __ieee80211_tx_status(hw, status, rates_idx, |
|
retry_count); |
|
|
|
if (acked || noack_success) { |
|
I802_DEBUG_INC(local->dot11TransmittedFrameCount); |
|
if (!pubsta) |
|
I802_DEBUG_INC(local->dot11MulticastTransmittedFrameCount); |
|
if (retry_count > 0) |
|
I802_DEBUG_INC(local->dot11RetryCount); |
|
if (retry_count > 1) |
|
I802_DEBUG_INC(local->dot11MultipleRetryCount); |
|
} else { |
|
I802_DEBUG_INC(local->dot11FailedCount); |
|
} |
|
|
|
free: |
|
if (!skb) |
|
return; |
|
|
|
ieee80211_report_used_skb(local, skb, false); |
|
if (status->free_list) |
|
list_add_tail(&skb->list, status->free_list); |
|
else |
|
dev_kfree_skb(skb); |
|
} |
|
EXPORT_SYMBOL(ieee80211_tx_status_ext); |
|
|
|
void ieee80211_tx_rate_update(struct ieee80211_hw *hw, |
|
struct ieee80211_sta *pubsta, |
|
struct ieee80211_tx_info *info) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
struct ieee80211_supported_band *sband = hw->wiphy->bands[info->band]; |
|
struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
|
struct ieee80211_tx_status status = { |
|
.info = info, |
|
.sta = pubsta, |
|
}; |
|
|
|
rate_control_tx_status(local, sband, &status); |
|
|
|
if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) |
|
sta->tx_stats.last_rate = info->status.rates[0]; |
|
} |
|
EXPORT_SYMBOL(ieee80211_tx_rate_update); |
|
|
|
void ieee80211_tx_status_8023(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
struct sk_buff *skb) |
|
{ |
|
struct ieee80211_sub_if_data *sdata; |
|
struct ieee80211_tx_status status = { |
|
.skb = skb, |
|
.info = IEEE80211_SKB_CB(skb), |
|
}; |
|
struct sta_info *sta; |
|
|
|
sdata = vif_to_sdata(vif); |
|
|
|
rcu_read_lock(); |
|
|
|
if (!ieee80211_lookup_ra_sta(sdata, skb, &sta) && !IS_ERR(sta)) |
|
status.sta = &sta->sta; |
|
|
|
ieee80211_tx_status_ext(hw, &status); |
|
|
|
rcu_read_unlock(); |
|
} |
|
EXPORT_SYMBOL(ieee80211_tx_status_8023); |
|
|
|
void ieee80211_report_low_ack(struct ieee80211_sta *pubsta, u32 num_packets) |
|
{ |
|
struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
|
cfg80211_cqm_pktloss_notify(sta->sdata->dev, sta->sta.addr, |
|
num_packets, GFP_ATOMIC); |
|
} |
|
EXPORT_SYMBOL(ieee80211_report_low_ack); |
|
|
|
void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
|
|
ieee80211_report_used_skb(local, skb, true); |
|
dev_kfree_skb_any(skb); |
|
} |
|
EXPORT_SYMBOL(ieee80211_free_txskb); |
|
|
|
void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, |
|
struct sk_buff_head *skbs) |
|
{ |
|
struct sk_buff *skb; |
|
|
|
while ((skb = __skb_dequeue(skbs))) |
|
ieee80211_free_txskb(hw, skb); |
|
}
|
|
|