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4871 lines
126 KiB
4871 lines
126 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 2007 Johannes Berg <[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) 2018-2022 Intel Corporation |
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* |
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* utilities for mac80211 |
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*/ |
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|
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#include <net/mac80211.h> |
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#include <linux/netdevice.h> |
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#include <linux/export.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/etherdevice.h> |
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#include <linux/if_arp.h> |
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#include <linux/bitmap.h> |
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#include <linux/crc32.h> |
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#include <net/net_namespace.h> |
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#include <net/cfg80211.h> |
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#include <net/rtnetlink.h> |
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|
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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 "mesh.h" |
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#include "wme.h" |
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#include "led.h" |
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#include "wep.h" |
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|
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/* privid for wiphys to determine whether they belong to us or not */ |
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const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid; |
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|
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struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy) |
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{ |
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struct ieee80211_local *local; |
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|
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local = wiphy_priv(wiphy); |
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return &local->hw; |
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} |
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EXPORT_SYMBOL(wiphy_to_ieee80211_hw); |
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|
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u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, |
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enum nl80211_iftype type) |
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{ |
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__le16 fc = hdr->frame_control; |
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|
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if (ieee80211_is_data(fc)) { |
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if (len < 24) /* drop incorrect hdr len (data) */ |
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return NULL; |
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|
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if (ieee80211_has_a4(fc)) |
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return NULL; |
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if (ieee80211_has_tods(fc)) |
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return hdr->addr1; |
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if (ieee80211_has_fromds(fc)) |
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return hdr->addr2; |
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|
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return hdr->addr3; |
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} |
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|
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if (ieee80211_is_s1g_beacon(fc)) { |
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struct ieee80211_ext *ext = (void *) hdr; |
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|
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return ext->u.s1g_beacon.sa; |
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} |
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|
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if (ieee80211_is_mgmt(fc)) { |
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if (len < 24) /* drop incorrect hdr len (mgmt) */ |
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return NULL; |
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return hdr->addr3; |
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} |
|
|
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if (ieee80211_is_ctl(fc)) { |
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if (ieee80211_is_pspoll(fc)) |
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return hdr->addr1; |
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|
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if (ieee80211_is_back_req(fc)) { |
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switch (type) { |
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case NL80211_IFTYPE_STATION: |
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return hdr->addr2; |
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case NL80211_IFTYPE_AP: |
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case NL80211_IFTYPE_AP_VLAN: |
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return hdr->addr1; |
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default: |
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break; /* fall through to the return */ |
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} |
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} |
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} |
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|
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return NULL; |
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} |
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EXPORT_SYMBOL(ieee80211_get_bssid); |
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|
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void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) |
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{ |
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struct sk_buff *skb; |
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struct ieee80211_hdr *hdr; |
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|
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skb_queue_walk(&tx->skbs, skb) { |
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hdr = (struct ieee80211_hdr *) skb->data; |
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hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); |
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} |
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} |
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|
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int ieee80211_frame_duration(enum nl80211_band band, size_t len, |
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int rate, int erp, int short_preamble, |
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int shift) |
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{ |
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int dur; |
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|
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/* calculate duration (in microseconds, rounded up to next higher |
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* integer if it includes a fractional microsecond) to send frame of |
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* len bytes (does not include FCS) at the given rate. Duration will |
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* also include SIFS. |
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* |
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* rate is in 100 kbps, so divident is multiplied by 10 in the |
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* DIV_ROUND_UP() operations. |
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* |
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* shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and |
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* is assumed to be 0 otherwise. |
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*/ |
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|
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if (band == NL80211_BAND_5GHZ || erp) { |
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/* |
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* OFDM: |
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* |
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* N_DBPS = DATARATE x 4 |
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* N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) |
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* (16 = SIGNAL time, 6 = tail bits) |
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* TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext |
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* |
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* T_SYM = 4 usec |
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* 802.11a - 18.5.2: aSIFSTime = 16 usec |
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* 802.11g - 19.8.4: aSIFSTime = 10 usec + |
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* signal ext = 6 usec |
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*/ |
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dur = 16; /* SIFS + signal ext */ |
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dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */ |
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dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */ |
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|
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/* IEEE 802.11-2012 18.3.2.4: all values above are: |
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* * times 4 for 5 MHz |
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* * times 2 for 10 MHz |
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*/ |
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dur *= 1 << shift; |
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|
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/* rates should already consider the channel bandwidth, |
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* don't apply divisor again. |
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*/ |
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dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, |
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4 * rate); /* T_SYM x N_SYM */ |
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} else { |
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/* |
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* 802.11b or 802.11g with 802.11b compatibility: |
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* 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + |
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* Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. |
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* |
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* 802.11 (DS): 15.3.3, 802.11b: 18.3.4 |
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* aSIFSTime = 10 usec |
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* aPreambleLength = 144 usec or 72 usec with short preamble |
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* aPLCPHeaderLength = 48 usec or 24 usec with short preamble |
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*/ |
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dur = 10; /* aSIFSTime = 10 usec */ |
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dur += short_preamble ? (72 + 24) : (144 + 48); |
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|
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dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); |
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} |
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|
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return dur; |
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} |
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|
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/* Exported duration function for driver use */ |
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__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
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struct ieee80211_vif *vif, |
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enum nl80211_band band, |
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size_t frame_len, |
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struct ieee80211_rate *rate) |
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{ |
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struct ieee80211_sub_if_data *sdata; |
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u16 dur; |
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int erp, shift = 0; |
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bool short_preamble = false; |
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|
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erp = 0; |
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if (vif) { |
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sdata = vif_to_sdata(vif); |
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short_preamble = sdata->vif.bss_conf.use_short_preamble; |
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if (sdata->deflink.operating_11g_mode) |
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erp = rate->flags & IEEE80211_RATE_ERP_G; |
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shift = ieee80211_vif_get_shift(vif); |
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} |
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|
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dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, |
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short_preamble, shift); |
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|
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return cpu_to_le16(dur); |
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} |
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EXPORT_SYMBOL(ieee80211_generic_frame_duration); |
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|
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__le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
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struct ieee80211_vif *vif, size_t frame_len, |
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const struct ieee80211_tx_info *frame_txctl) |
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{ |
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struct ieee80211_local *local = hw_to_local(hw); |
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struct ieee80211_rate *rate; |
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struct ieee80211_sub_if_data *sdata; |
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bool short_preamble; |
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int erp, shift = 0, bitrate; |
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u16 dur; |
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struct ieee80211_supported_band *sband; |
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|
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sband = local->hw.wiphy->bands[frame_txctl->band]; |
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|
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short_preamble = false; |
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|
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rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
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|
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erp = 0; |
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if (vif) { |
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sdata = vif_to_sdata(vif); |
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short_preamble = sdata->vif.bss_conf.use_short_preamble; |
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if (sdata->deflink.operating_11g_mode) |
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erp = rate->flags & IEEE80211_RATE_ERP_G; |
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shift = ieee80211_vif_get_shift(vif); |
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} |
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|
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bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); |
|
|
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/* CTS duration */ |
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dur = ieee80211_frame_duration(sband->band, 10, bitrate, |
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erp, short_preamble, shift); |
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/* Data frame duration */ |
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dur += ieee80211_frame_duration(sband->band, frame_len, bitrate, |
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erp, short_preamble, shift); |
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/* ACK duration */ |
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dur += ieee80211_frame_duration(sband->band, 10, bitrate, |
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erp, short_preamble, shift); |
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|
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return cpu_to_le16(dur); |
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} |
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EXPORT_SYMBOL(ieee80211_rts_duration); |
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|
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__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
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struct ieee80211_vif *vif, |
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size_t frame_len, |
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const struct ieee80211_tx_info *frame_txctl) |
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{ |
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struct ieee80211_local *local = hw_to_local(hw); |
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struct ieee80211_rate *rate; |
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struct ieee80211_sub_if_data *sdata; |
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bool short_preamble; |
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int erp, shift = 0, bitrate; |
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u16 dur; |
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struct ieee80211_supported_band *sband; |
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|
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sband = local->hw.wiphy->bands[frame_txctl->band]; |
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|
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short_preamble = false; |
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|
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rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; |
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erp = 0; |
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if (vif) { |
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sdata = vif_to_sdata(vif); |
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short_preamble = sdata->vif.bss_conf.use_short_preamble; |
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if (sdata->deflink.operating_11g_mode) |
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erp = rate->flags & IEEE80211_RATE_ERP_G; |
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shift = ieee80211_vif_get_shift(vif); |
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} |
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|
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bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); |
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|
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/* Data frame duration */ |
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dur = ieee80211_frame_duration(sband->band, frame_len, bitrate, |
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erp, short_preamble, shift); |
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if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { |
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/* ACK duration */ |
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dur += ieee80211_frame_duration(sband->band, 10, bitrate, |
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erp, short_preamble, shift); |
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} |
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|
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return cpu_to_le16(dur); |
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} |
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EXPORT_SYMBOL(ieee80211_ctstoself_duration); |
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|
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static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac) |
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{ |
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struct ieee80211_local *local = sdata->local; |
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struct ieee80211_vif *vif = &sdata->vif; |
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struct fq *fq = &local->fq; |
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struct ps_data *ps = NULL; |
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struct txq_info *txqi; |
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struct sta_info *sta; |
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int i; |
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|
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local_bh_disable(); |
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spin_lock(&fq->lock); |
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|
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sdata->vif.txqs_stopped[ac] = false; |
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|
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if (!test_bit(SDATA_STATE_RUNNING, &sdata->state)) |
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goto out; |
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if (sdata->vif.type == NL80211_IFTYPE_AP) |
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ps = &sdata->bss->ps; |
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|
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list_for_each_entry_rcu(sta, &local->sta_list, list) { |
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if (sdata != sta->sdata) |
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continue; |
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for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { |
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struct ieee80211_txq *txq = sta->sta.txq[i]; |
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|
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if (!txq) |
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continue; |
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txqi = to_txq_info(txq); |
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|
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if (ac != txq->ac) |
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continue; |
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|
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if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX, |
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&txqi->flags)) |
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continue; |
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|
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spin_unlock(&fq->lock); |
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drv_wake_tx_queue(local, txqi); |
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spin_lock(&fq->lock); |
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} |
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} |
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|
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if (!vif->txq) |
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goto out; |
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|
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txqi = to_txq_info(vif->txq); |
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|
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if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX, &txqi->flags) || |
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(ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac) |
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goto out; |
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|
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spin_unlock(&fq->lock); |
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|
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drv_wake_tx_queue(local, txqi); |
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local_bh_enable(); |
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return; |
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out: |
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spin_unlock(&fq->lock); |
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local_bh_enable(); |
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} |
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|
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static void |
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__releases(&local->queue_stop_reason_lock) |
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__acquires(&local->queue_stop_reason_lock) |
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_ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags) |
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{ |
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struct ieee80211_sub_if_data *sdata; |
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int n_acs = IEEE80211_NUM_ACS; |
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int i; |
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|
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rcu_read_lock(); |
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|
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if (local->hw.queues < IEEE80211_NUM_ACS) |
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n_acs = 1; |
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|
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for (i = 0; i < local->hw.queues; i++) { |
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if (local->queue_stop_reasons[i]) |
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continue; |
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|
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spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags); |
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list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
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int ac; |
|
|
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for (ac = 0; ac < n_acs; ac++) { |
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int ac_queue = sdata->vif.hw_queue[ac]; |
|
|
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if (ac_queue == i || |
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sdata->vif.cab_queue == i) |
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__ieee80211_wake_txqs(sdata, ac); |
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} |
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} |
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spin_lock_irqsave(&local->queue_stop_reason_lock, *flags); |
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} |
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|
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rcu_read_unlock(); |
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} |
|
|
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void ieee80211_wake_txqs(struct tasklet_struct *t) |
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{ |
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struct ieee80211_local *local = from_tasklet(local, t, |
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wake_txqs_tasklet); |
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unsigned long flags; |
|
|
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spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
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_ieee80211_wake_txqs(local, &flags); |
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spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
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} |
|
|
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void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue) |
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{ |
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struct ieee80211_sub_if_data *sdata; |
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int n_acs = IEEE80211_NUM_ACS; |
|
|
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if (local->ops->wake_tx_queue) |
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return; |
|
|
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if (local->hw.queues < IEEE80211_NUM_ACS) |
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n_acs = 1; |
|
|
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list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
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int ac; |
|
|
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if (!sdata->dev) |
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continue; |
|
|
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if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE && |
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local->queue_stop_reasons[sdata->vif.cab_queue] != 0) |
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continue; |
|
|
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for (ac = 0; ac < n_acs; ac++) { |
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int ac_queue = sdata->vif.hw_queue[ac]; |
|
|
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if (ac_queue == queue || |
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(sdata->vif.cab_queue == queue && |
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local->queue_stop_reasons[ac_queue] == 0 && |
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skb_queue_empty(&local->pending[ac_queue]))) |
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netif_wake_subqueue(sdata->dev, ac); |
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} |
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} |
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} |
|
|
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static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, |
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enum queue_stop_reason reason, |
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bool refcounted, |
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unsigned long *flags) |
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{ |
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struct ieee80211_local *local = hw_to_local(hw); |
|
|
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trace_wake_queue(local, queue, reason); |
|
|
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if (WARN_ON(queue >= hw->queues)) |
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return; |
|
|
|
if (!test_bit(reason, &local->queue_stop_reasons[queue])) |
|
return; |
|
|
|
if (!refcounted) { |
|
local->q_stop_reasons[queue][reason] = 0; |
|
} else { |
|
local->q_stop_reasons[queue][reason]--; |
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if (WARN_ON(local->q_stop_reasons[queue][reason] < 0)) |
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local->q_stop_reasons[queue][reason] = 0; |
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} |
|
|
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if (local->q_stop_reasons[queue][reason] == 0) |
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__clear_bit(reason, &local->queue_stop_reasons[queue]); |
|
|
|
if (local->queue_stop_reasons[queue] != 0) |
|
/* someone still has this queue stopped */ |
|
return; |
|
|
|
if (skb_queue_empty(&local->pending[queue])) { |
|
rcu_read_lock(); |
|
ieee80211_propagate_queue_wake(local, queue); |
|
rcu_read_unlock(); |
|
} else |
|
tasklet_schedule(&local->tx_pending_tasklet); |
|
|
|
/* |
|
* Calling _ieee80211_wake_txqs here can be a problem because it may |
|
* release queue_stop_reason_lock which has been taken by |
|
* __ieee80211_wake_queue's caller. It is certainly not very nice to |
|
* release someone's lock, but it is fine because all the callers of |
|
* __ieee80211_wake_queue call it right before releasing the lock. |
|
*/ |
|
if (local->ops->wake_tx_queue) { |
|
if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER) |
|
tasklet_schedule(&local->wake_txqs_tasklet); |
|
else |
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_ieee80211_wake_txqs(local, flags); |
|
} |
|
} |
|
|
|
void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
|
enum queue_stop_reason reason, |
|
bool refcounted) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
|
__ieee80211_wake_queue(hw, queue, reason, refcounted, &flags); |
|
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
|
} |
|
|
|
void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) |
|
{ |
|
ieee80211_wake_queue_by_reason(hw, queue, |
|
IEEE80211_QUEUE_STOP_REASON_DRIVER, |
|
false); |
|
} |
|
EXPORT_SYMBOL(ieee80211_wake_queue); |
|
|
|
static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, |
|
enum queue_stop_reason reason, |
|
bool refcounted) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
struct ieee80211_sub_if_data *sdata; |
|
int n_acs = IEEE80211_NUM_ACS; |
|
|
|
trace_stop_queue(local, queue, reason); |
|
|
|
if (WARN_ON(queue >= hw->queues)) |
|
return; |
|
|
|
if (!refcounted) |
|
local->q_stop_reasons[queue][reason] = 1; |
|
else |
|
local->q_stop_reasons[queue][reason]++; |
|
|
|
if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue])) |
|
return; |
|
|
|
if (local->hw.queues < IEEE80211_NUM_ACS) |
|
n_acs = 1; |
|
|
|
rcu_read_lock(); |
|
list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
|
int ac; |
|
|
|
if (!sdata->dev) |
|
continue; |
|
|
|
for (ac = 0; ac < n_acs; ac++) { |
|
if (sdata->vif.hw_queue[ac] == queue || |
|
sdata->vif.cab_queue == queue) { |
|
if (!local->ops->wake_tx_queue) { |
|
netif_stop_subqueue(sdata->dev, ac); |
|
continue; |
|
} |
|
spin_lock(&local->fq.lock); |
|
sdata->vif.txqs_stopped[ac] = true; |
|
spin_unlock(&local->fq.lock); |
|
} |
|
} |
|
} |
|
rcu_read_unlock(); |
|
} |
|
|
|
void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, |
|
enum queue_stop_reason reason, |
|
bool refcounted) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
|
__ieee80211_stop_queue(hw, queue, reason, refcounted); |
|
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
|
} |
|
|
|
void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) |
|
{ |
|
ieee80211_stop_queue_by_reason(hw, queue, |
|
IEEE80211_QUEUE_STOP_REASON_DRIVER, |
|
false); |
|
} |
|
EXPORT_SYMBOL(ieee80211_stop_queue); |
|
|
|
void ieee80211_add_pending_skb(struct ieee80211_local *local, |
|
struct sk_buff *skb) |
|
{ |
|
struct ieee80211_hw *hw = &local->hw; |
|
unsigned long flags; |
|
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
|
int queue = info->hw_queue; |
|
|
|
if (WARN_ON(!info->control.vif)) { |
|
ieee80211_free_txskb(&local->hw, skb); |
|
return; |
|
} |
|
|
|
spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
|
__ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
|
false); |
|
__skb_queue_tail(&local->pending[queue], skb); |
|
__ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
|
false, &flags); |
|
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
|
} |
|
|
|
void ieee80211_add_pending_skbs(struct ieee80211_local *local, |
|
struct sk_buff_head *skbs) |
|
{ |
|
struct ieee80211_hw *hw = &local->hw; |
|
struct sk_buff *skb; |
|
unsigned long flags; |
|
int queue, i; |
|
|
|
spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
|
while ((skb = skb_dequeue(skbs))) { |
|
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
|
|
|
if (WARN_ON(!info->control.vif)) { |
|
ieee80211_free_txskb(&local->hw, skb); |
|
continue; |
|
} |
|
|
|
queue = info->hw_queue; |
|
|
|
__ieee80211_stop_queue(hw, queue, |
|
IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
|
false); |
|
|
|
__skb_queue_tail(&local->pending[queue], skb); |
|
} |
|
|
|
for (i = 0; i < hw->queues; i++) |
|
__ieee80211_wake_queue(hw, i, |
|
IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
|
false, &flags); |
|
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
|
} |
|
|
|
void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
|
unsigned long queues, |
|
enum queue_stop_reason reason, |
|
bool refcounted) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
unsigned long flags; |
|
int i; |
|
|
|
spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
|
|
|
for_each_set_bit(i, &queues, hw->queues) |
|
__ieee80211_stop_queue(hw, i, reason, refcounted); |
|
|
|
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
|
} |
|
|
|
void ieee80211_stop_queues(struct ieee80211_hw *hw) |
|
{ |
|
ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
|
IEEE80211_QUEUE_STOP_REASON_DRIVER, |
|
false); |
|
} |
|
EXPORT_SYMBOL(ieee80211_stop_queues); |
|
|
|
int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
unsigned long flags; |
|
int ret; |
|
|
|
if (WARN_ON(queue >= hw->queues)) |
|
return true; |
|
|
|
spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
|
ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, |
|
&local->queue_stop_reasons[queue]); |
|
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
|
return ret; |
|
} |
|
EXPORT_SYMBOL(ieee80211_queue_stopped); |
|
|
|
void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
|
unsigned long queues, |
|
enum queue_stop_reason reason, |
|
bool refcounted) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
unsigned long flags; |
|
int i; |
|
|
|
spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
|
|
|
for_each_set_bit(i, &queues, hw->queues) |
|
__ieee80211_wake_queue(hw, i, reason, refcounted, &flags); |
|
|
|
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
|
} |
|
|
|
void ieee80211_wake_queues(struct ieee80211_hw *hw) |
|
{ |
|
ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
|
IEEE80211_QUEUE_STOP_REASON_DRIVER, |
|
false); |
|
} |
|
EXPORT_SYMBOL(ieee80211_wake_queues); |
|
|
|
static unsigned int |
|
ieee80211_get_vif_queues(struct ieee80211_local *local, |
|
struct ieee80211_sub_if_data *sdata) |
|
{ |
|
unsigned int queues; |
|
|
|
if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) { |
|
int ac; |
|
|
|
queues = 0; |
|
|
|
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) |
|
queues |= BIT(sdata->vif.hw_queue[ac]); |
|
if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) |
|
queues |= BIT(sdata->vif.cab_queue); |
|
} else { |
|
/* all queues */ |
|
queues = BIT(local->hw.queues) - 1; |
|
} |
|
|
|
return queues; |
|
} |
|
|
|
void __ieee80211_flush_queues(struct ieee80211_local *local, |
|
struct ieee80211_sub_if_data *sdata, |
|
unsigned int queues, bool drop) |
|
{ |
|
if (!local->ops->flush) |
|
return; |
|
|
|
/* |
|
* If no queue was set, or if the HW doesn't support |
|
* IEEE80211_HW_QUEUE_CONTROL - flush all queues |
|
*/ |
|
if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) |
|
queues = ieee80211_get_vif_queues(local, sdata); |
|
|
|
ieee80211_stop_queues_by_reason(&local->hw, queues, |
|
IEEE80211_QUEUE_STOP_REASON_FLUSH, |
|
false); |
|
|
|
drv_flush(local, sdata, queues, drop); |
|
|
|
ieee80211_wake_queues_by_reason(&local->hw, queues, |
|
IEEE80211_QUEUE_STOP_REASON_FLUSH, |
|
false); |
|
} |
|
|
|
void ieee80211_flush_queues(struct ieee80211_local *local, |
|
struct ieee80211_sub_if_data *sdata, bool drop) |
|
{ |
|
__ieee80211_flush_queues(local, sdata, 0, drop); |
|
} |
|
|
|
void ieee80211_stop_vif_queues(struct ieee80211_local *local, |
|
struct ieee80211_sub_if_data *sdata, |
|
enum queue_stop_reason reason) |
|
{ |
|
ieee80211_stop_queues_by_reason(&local->hw, |
|
ieee80211_get_vif_queues(local, sdata), |
|
reason, true); |
|
} |
|
|
|
void ieee80211_wake_vif_queues(struct ieee80211_local *local, |
|
struct ieee80211_sub_if_data *sdata, |
|
enum queue_stop_reason reason) |
|
{ |
|
ieee80211_wake_queues_by_reason(&local->hw, |
|
ieee80211_get_vif_queues(local, sdata), |
|
reason, true); |
|
} |
|
|
|
static void __iterate_interfaces(struct ieee80211_local *local, |
|
u32 iter_flags, |
|
void (*iterator)(void *data, u8 *mac, |
|
struct ieee80211_vif *vif), |
|
void *data) |
|
{ |
|
struct ieee80211_sub_if_data *sdata; |
|
bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE; |
|
|
|
list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
|
switch (sdata->vif.type) { |
|
case NL80211_IFTYPE_MONITOR: |
|
if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)) |
|
continue; |
|
break; |
|
case NL80211_IFTYPE_AP_VLAN: |
|
continue; |
|
default: |
|
break; |
|
} |
|
if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && |
|
active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) |
|
continue; |
|
if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) && |
|
!(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) |
|
continue; |
|
if (ieee80211_sdata_running(sdata) || !active_only) |
|
iterator(data, sdata->vif.addr, |
|
&sdata->vif); |
|
} |
|
|
|
sdata = rcu_dereference_check(local->monitor_sdata, |
|
lockdep_is_held(&local->iflist_mtx) || |
|
lockdep_is_held(&local->hw.wiphy->mtx)); |
|
if (sdata && |
|
(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only || |
|
sdata->flags & IEEE80211_SDATA_IN_DRIVER)) |
|
iterator(data, sdata->vif.addr, &sdata->vif); |
|
} |
|
|
|
void ieee80211_iterate_interfaces( |
|
struct ieee80211_hw *hw, u32 iter_flags, |
|
void (*iterator)(void *data, u8 *mac, |
|
struct ieee80211_vif *vif), |
|
void *data) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
|
|
mutex_lock(&local->iflist_mtx); |
|
__iterate_interfaces(local, iter_flags, iterator, data); |
|
mutex_unlock(&local->iflist_mtx); |
|
} |
|
EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces); |
|
|
|
void ieee80211_iterate_active_interfaces_atomic( |
|
struct ieee80211_hw *hw, u32 iter_flags, |
|
void (*iterator)(void *data, u8 *mac, |
|
struct ieee80211_vif *vif), |
|
void *data) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
|
|
rcu_read_lock(); |
|
__iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, |
|
iterator, data); |
|
rcu_read_unlock(); |
|
} |
|
EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); |
|
|
|
void ieee80211_iterate_active_interfaces_mtx( |
|
struct ieee80211_hw *hw, u32 iter_flags, |
|
void (*iterator)(void *data, u8 *mac, |
|
struct ieee80211_vif *vif), |
|
void *data) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
|
|
lockdep_assert_wiphy(hw->wiphy); |
|
|
|
__iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, |
|
iterator, data); |
|
} |
|
EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_mtx); |
|
|
|
static void __iterate_stations(struct ieee80211_local *local, |
|
void (*iterator)(void *data, |
|
struct ieee80211_sta *sta), |
|
void *data) |
|
{ |
|
struct sta_info *sta; |
|
|
|
list_for_each_entry_rcu(sta, &local->sta_list, list) { |
|
if (!sta->uploaded) |
|
continue; |
|
|
|
iterator(data, &sta->sta); |
|
} |
|
} |
|
|
|
void ieee80211_iterate_stations(struct ieee80211_hw *hw, |
|
void (*iterator)(void *data, |
|
struct ieee80211_sta *sta), |
|
void *data) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
|
|
mutex_lock(&local->sta_mtx); |
|
__iterate_stations(local, iterator, data); |
|
mutex_unlock(&local->sta_mtx); |
|
} |
|
EXPORT_SYMBOL_GPL(ieee80211_iterate_stations); |
|
|
|
void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, |
|
void (*iterator)(void *data, |
|
struct ieee80211_sta *sta), |
|
void *data) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
|
|
rcu_read_lock(); |
|
__iterate_stations(local, iterator, data); |
|
rcu_read_unlock(); |
|
} |
|
EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic); |
|
|
|
struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) |
|
{ |
|
struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); |
|
|
|
if (!ieee80211_sdata_running(sdata) || |
|
!(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) |
|
return NULL; |
|
return &sdata->vif; |
|
} |
|
EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); |
|
|
|
struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif) |
|
{ |
|
if (!vif) |
|
return NULL; |
|
|
|
return &vif_to_sdata(vif)->wdev; |
|
} |
|
EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev); |
|
|
|
/* |
|
* Nothing should have been stuffed into the workqueue during |
|
* the suspend->resume cycle. Since we can't check each caller |
|
* of this function if we are already quiescing / suspended, |
|
* check here and don't WARN since this can actually happen when |
|
* the rx path (for example) is racing against __ieee80211_suspend |
|
* and suspending / quiescing was set after the rx path checked |
|
* them. |
|
*/ |
|
static bool ieee80211_can_queue_work(struct ieee80211_local *local) |
|
{ |
|
if (local->quiescing || (local->suspended && !local->resuming)) { |
|
pr_warn("queueing ieee80211 work while going to suspend\n"); |
|
return false; |
|
} |
|
|
|
return true; |
|
} |
|
|
|
void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
|
|
if (!ieee80211_can_queue_work(local)) |
|
return; |
|
|
|
queue_work(local->workqueue, work); |
|
} |
|
EXPORT_SYMBOL(ieee80211_queue_work); |
|
|
|
void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, |
|
struct delayed_work *dwork, |
|
unsigned long delay) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
|
|
if (!ieee80211_can_queue_work(local)) |
|
return; |
|
|
|
queue_delayed_work(local->workqueue, dwork, delay); |
|
} |
|
EXPORT_SYMBOL(ieee80211_queue_delayed_work); |
|
|
|
static void |
|
ieee80211_parse_extension_element(u32 *crc, |
|
const struct element *elem, |
|
struct ieee802_11_elems *elems, |
|
struct ieee80211_elems_parse_params *params) |
|
{ |
|
const void *data = elem->data + 1; |
|
u8 len; |
|
|
|
if (!elem->datalen) |
|
return; |
|
|
|
len = elem->datalen - 1; |
|
|
|
switch (elem->data[0]) { |
|
case WLAN_EID_EXT_HE_MU_EDCA: |
|
if (len >= sizeof(*elems->mu_edca_param_set)) { |
|
elems->mu_edca_param_set = data; |
|
if (crc) |
|
*crc = crc32_be(*crc, (void *)elem, |
|
elem->datalen + 2); |
|
} |
|
break; |
|
case WLAN_EID_EXT_HE_CAPABILITY: |
|
if (ieee80211_he_capa_size_ok(data, len)) { |
|
elems->he_cap = data; |
|
elems->he_cap_len = len; |
|
} |
|
break; |
|
case WLAN_EID_EXT_HE_OPERATION: |
|
if (len >= sizeof(*elems->he_operation) && |
|
len >= ieee80211_he_oper_size(data) - 1) { |
|
if (crc) |
|
*crc = crc32_be(*crc, (void *)elem, |
|
elem->datalen + 2); |
|
elems->he_operation = data; |
|
} |
|
break; |
|
case WLAN_EID_EXT_UORA: |
|
if (len >= 1) |
|
elems->uora_element = data; |
|
break; |
|
case WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME: |
|
if (len == 3) |
|
elems->max_channel_switch_time = data; |
|
break; |
|
case WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION: |
|
if (len >= sizeof(*elems->mbssid_config_ie)) |
|
elems->mbssid_config_ie = data; |
|
break; |
|
case WLAN_EID_EXT_HE_SPR: |
|
if (len >= sizeof(*elems->he_spr) && |
|
len >= ieee80211_he_spr_size(data)) |
|
elems->he_spr = data; |
|
break; |
|
case WLAN_EID_EXT_HE_6GHZ_CAPA: |
|
if (len >= sizeof(*elems->he_6ghz_capa)) |
|
elems->he_6ghz_capa = data; |
|
break; |
|
case WLAN_EID_EXT_EHT_CAPABILITY: |
|
if (ieee80211_eht_capa_size_ok(elems->he_cap, |
|
data, len, |
|
params->from_ap)) { |
|
elems->eht_cap = data; |
|
elems->eht_cap_len = len; |
|
} |
|
break; |
|
case WLAN_EID_EXT_EHT_OPERATION: |
|
if (ieee80211_eht_oper_size_ok(data, len)) |
|
elems->eht_operation = data; |
|
break; |
|
case WLAN_EID_EXT_EHT_MULTI_LINK: |
|
if (ieee80211_mle_size_ok(data, len)) |
|
elems->multi_link = (void *)data; |
|
break; |
|
} |
|
} |
|
|
|
static u32 |
|
_ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params, |
|
struct ieee802_11_elems *elems, |
|
const struct element *check_inherit) |
|
{ |
|
const struct element *elem; |
|
bool calc_crc = params->filter != 0; |
|
DECLARE_BITMAP(seen_elems, 256); |
|
u32 crc = params->crc; |
|
const u8 *ie; |
|
|
|
bitmap_zero(seen_elems, 256); |
|
|
|
for_each_element(elem, params->start, params->len) { |
|
bool elem_parse_failed; |
|
u8 id = elem->id; |
|
u8 elen = elem->datalen; |
|
const u8 *pos = elem->data; |
|
|
|
if (check_inherit && |
|
!cfg80211_is_element_inherited(elem, |
|
check_inherit)) |
|
continue; |
|
|
|
switch (id) { |
|
case WLAN_EID_SSID: |
|
case WLAN_EID_SUPP_RATES: |
|
case WLAN_EID_FH_PARAMS: |
|
case WLAN_EID_DS_PARAMS: |
|
case WLAN_EID_CF_PARAMS: |
|
case WLAN_EID_TIM: |
|
case WLAN_EID_IBSS_PARAMS: |
|
case WLAN_EID_CHALLENGE: |
|
case WLAN_EID_RSN: |
|
case WLAN_EID_ERP_INFO: |
|
case WLAN_EID_EXT_SUPP_RATES: |
|
case WLAN_EID_HT_CAPABILITY: |
|
case WLAN_EID_HT_OPERATION: |
|
case WLAN_EID_VHT_CAPABILITY: |
|
case WLAN_EID_VHT_OPERATION: |
|
case WLAN_EID_MESH_ID: |
|
case WLAN_EID_MESH_CONFIG: |
|
case WLAN_EID_PEER_MGMT: |
|
case WLAN_EID_PREQ: |
|
case WLAN_EID_PREP: |
|
case WLAN_EID_PERR: |
|
case WLAN_EID_RANN: |
|
case WLAN_EID_CHANNEL_SWITCH: |
|
case WLAN_EID_EXT_CHANSWITCH_ANN: |
|
case WLAN_EID_COUNTRY: |
|
case WLAN_EID_PWR_CONSTRAINT: |
|
case WLAN_EID_TIMEOUT_INTERVAL: |
|
case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
|
case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
|
case WLAN_EID_CHAN_SWITCH_PARAM: |
|
case WLAN_EID_EXT_CAPABILITY: |
|
case WLAN_EID_CHAN_SWITCH_TIMING: |
|
case WLAN_EID_LINK_ID: |
|
case WLAN_EID_BSS_MAX_IDLE_PERIOD: |
|
case WLAN_EID_RSNX: |
|
case WLAN_EID_S1G_BCN_COMPAT: |
|
case WLAN_EID_S1G_CAPABILITIES: |
|
case WLAN_EID_S1G_OPERATION: |
|
case WLAN_EID_AID_RESPONSE: |
|
case WLAN_EID_S1G_SHORT_BCN_INTERVAL: |
|
/* |
|
* not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible |
|
* that if the content gets bigger it might be needed more than once |
|
*/ |
|
if (test_bit(id, seen_elems)) { |
|
elems->parse_error = true; |
|
continue; |
|
} |
|
break; |
|
} |
|
|
|
if (calc_crc && id < 64 && (params->filter & (1ULL << id))) |
|
crc = crc32_be(crc, pos - 2, elen + 2); |
|
|
|
elem_parse_failed = false; |
|
|
|
switch (id) { |
|
case WLAN_EID_LINK_ID: |
|
if (elen + 2 < sizeof(struct ieee80211_tdls_lnkie)) { |
|
elem_parse_failed = true; |
|
break; |
|
} |
|
elems->lnk_id = (void *)(pos - 2); |
|
break; |
|
case WLAN_EID_CHAN_SWITCH_TIMING: |
|
if (elen < sizeof(struct ieee80211_ch_switch_timing)) { |
|
elem_parse_failed = true; |
|
break; |
|
} |
|
elems->ch_sw_timing = (void *)pos; |
|
break; |
|
case WLAN_EID_EXT_CAPABILITY: |
|
elems->ext_capab = pos; |
|
elems->ext_capab_len = elen; |
|
break; |
|
case WLAN_EID_SSID: |
|
elems->ssid = pos; |
|
elems->ssid_len = elen; |
|
break; |
|
case WLAN_EID_SUPP_RATES: |
|
elems->supp_rates = pos; |
|
elems->supp_rates_len = elen; |
|
break; |
|
case WLAN_EID_DS_PARAMS: |
|
if (elen >= 1) |
|
elems->ds_params = pos; |
|
else |
|
elem_parse_failed = true; |
|
break; |
|
case WLAN_EID_TIM: |
|
if (elen >= sizeof(struct ieee80211_tim_ie)) { |
|
elems->tim = (void *)pos; |
|
elems->tim_len = elen; |
|
} else |
|
elem_parse_failed = true; |
|
break; |
|
case WLAN_EID_VENDOR_SPECIFIC: |
|
if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && |
|
pos[2] == 0xf2) { |
|
/* Microsoft OUI (00:50:F2) */ |
|
|
|
if (calc_crc) |
|
crc = crc32_be(crc, pos - 2, elen + 2); |
|
|
|
if (elen >= 5 && pos[3] == 2) { |
|
/* OUI Type 2 - WMM IE */ |
|
if (pos[4] == 0) { |
|
elems->wmm_info = pos; |
|
elems->wmm_info_len = elen; |
|
} else if (pos[4] == 1) { |
|
elems->wmm_param = pos; |
|
elems->wmm_param_len = elen; |
|
} |
|
} |
|
} |
|
break; |
|
case WLAN_EID_RSN: |
|
elems->rsn = pos; |
|
elems->rsn_len = elen; |
|
break; |
|
case WLAN_EID_ERP_INFO: |
|
if (elen >= 1) |
|
elems->erp_info = pos; |
|
else |
|
elem_parse_failed = true; |
|
break; |
|
case WLAN_EID_EXT_SUPP_RATES: |
|
elems->ext_supp_rates = pos; |
|
elems->ext_supp_rates_len = elen; |
|
break; |
|
case WLAN_EID_HT_CAPABILITY: |
|
if (elen >= sizeof(struct ieee80211_ht_cap)) |
|
elems->ht_cap_elem = (void *)pos; |
|
else |
|
elem_parse_failed = true; |
|
break; |
|
case WLAN_EID_HT_OPERATION: |
|
if (elen >= sizeof(struct ieee80211_ht_operation)) |
|
elems->ht_operation = (void *)pos; |
|
else |
|
elem_parse_failed = true; |
|
break; |
|
case WLAN_EID_VHT_CAPABILITY: |
|
if (elen >= sizeof(struct ieee80211_vht_cap)) |
|
elems->vht_cap_elem = (void *)pos; |
|
else |
|
elem_parse_failed = true; |
|
break; |
|
case WLAN_EID_VHT_OPERATION: |
|
if (elen >= sizeof(struct ieee80211_vht_operation)) { |
|
elems->vht_operation = (void *)pos; |
|
if (calc_crc) |
|
crc = crc32_be(crc, pos - 2, elen + 2); |
|
break; |
|
} |
|
elem_parse_failed = true; |
|
break; |
|
case WLAN_EID_OPMODE_NOTIF: |
|
if (elen > 0) { |
|
elems->opmode_notif = pos; |
|
if (calc_crc) |
|
crc = crc32_be(crc, pos - 2, elen + 2); |
|
break; |
|
} |
|
elem_parse_failed = true; |
|
break; |
|
case WLAN_EID_MESH_ID: |
|
elems->mesh_id = pos; |
|
elems->mesh_id_len = elen; |
|
break; |
|
case WLAN_EID_MESH_CONFIG: |
|
if (elen >= sizeof(struct ieee80211_meshconf_ie)) |
|
elems->mesh_config = (void *)pos; |
|
else |
|
elem_parse_failed = true; |
|
break; |
|
case WLAN_EID_PEER_MGMT: |
|
elems->peering = pos; |
|
elems->peering_len = elen; |
|
break; |
|
case WLAN_EID_MESH_AWAKE_WINDOW: |
|
if (elen >= 2) |
|
elems->awake_window = (void *)pos; |
|
break; |
|
case WLAN_EID_PREQ: |
|
elems->preq = pos; |
|
elems->preq_len = elen; |
|
break; |
|
case WLAN_EID_PREP: |
|
elems->prep = pos; |
|
elems->prep_len = elen; |
|
break; |
|
case WLAN_EID_PERR: |
|
elems->perr = pos; |
|
elems->perr_len = elen; |
|
break; |
|
case WLAN_EID_RANN: |
|
if (elen >= sizeof(struct ieee80211_rann_ie)) |
|
elems->rann = (void *)pos; |
|
else |
|
elem_parse_failed = true; |
|
break; |
|
case WLAN_EID_CHANNEL_SWITCH: |
|
if (elen != sizeof(struct ieee80211_channel_sw_ie)) { |
|
elem_parse_failed = true; |
|
break; |
|
} |
|
elems->ch_switch_ie = (void *)pos; |
|
break; |
|
case WLAN_EID_EXT_CHANSWITCH_ANN: |
|
if (elen != sizeof(struct ieee80211_ext_chansw_ie)) { |
|
elem_parse_failed = true; |
|
break; |
|
} |
|
elems->ext_chansw_ie = (void *)pos; |
|
break; |
|
case WLAN_EID_SECONDARY_CHANNEL_OFFSET: |
|
if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) { |
|
elem_parse_failed = true; |
|
break; |
|
} |
|
elems->sec_chan_offs = (void *)pos; |
|
break; |
|
case WLAN_EID_CHAN_SWITCH_PARAM: |
|
if (elen < |
|
sizeof(*elems->mesh_chansw_params_ie)) { |
|
elem_parse_failed = true; |
|
break; |
|
} |
|
elems->mesh_chansw_params_ie = (void *)pos; |
|
break; |
|
case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: |
|
if (!params->action || |
|
elen < sizeof(*elems->wide_bw_chansw_ie)) { |
|
elem_parse_failed = true; |
|
break; |
|
} |
|
elems->wide_bw_chansw_ie = (void *)pos; |
|
break; |
|
case WLAN_EID_CHANNEL_SWITCH_WRAPPER: |
|
if (params->action) { |
|
elem_parse_failed = true; |
|
break; |
|
} |
|
/* |
|
* This is a bit tricky, but as we only care about |
|
* the wide bandwidth channel switch element, so |
|
* just parse it out manually. |
|
*/ |
|
ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH, |
|
pos, elen); |
|
if (ie) { |
|
if (ie[1] >= sizeof(*elems->wide_bw_chansw_ie)) |
|
elems->wide_bw_chansw_ie = |
|
(void *)(ie + 2); |
|
else |
|
elem_parse_failed = true; |
|
} |
|
break; |
|
case WLAN_EID_COUNTRY: |
|
elems->country_elem = pos; |
|
elems->country_elem_len = elen; |
|
break; |
|
case WLAN_EID_PWR_CONSTRAINT: |
|
if (elen != 1) { |
|
elem_parse_failed = true; |
|
break; |
|
} |
|
elems->pwr_constr_elem = pos; |
|
break; |
|
case WLAN_EID_CISCO_VENDOR_SPECIFIC: |
|
/* Lots of different options exist, but we only care |
|
* about the Dynamic Transmit Power Control element. |
|
* First check for the Cisco OUI, then for the DTPC |
|
* tag (0x00). |
|
*/ |
|
if (elen < 4) { |
|
elem_parse_failed = true; |
|
break; |
|
} |
|
|
|
if (pos[0] != 0x00 || pos[1] != 0x40 || |
|
pos[2] != 0x96 || pos[3] != 0x00) |
|
break; |
|
|
|
if (elen != 6) { |
|
elem_parse_failed = true; |
|
break; |
|
} |
|
|
|
if (calc_crc) |
|
crc = crc32_be(crc, pos - 2, elen + 2); |
|
|
|
elems->cisco_dtpc_elem = pos; |
|
break; |
|
case WLAN_EID_ADDBA_EXT: |
|
if (elen < sizeof(struct ieee80211_addba_ext_ie)) { |
|
elem_parse_failed = true; |
|
break; |
|
} |
|
elems->addba_ext_ie = (void *)pos; |
|
break; |
|
case WLAN_EID_TIMEOUT_INTERVAL: |
|
if (elen >= sizeof(struct ieee80211_timeout_interval_ie)) |
|
elems->timeout_int = (void *)pos; |
|
else |
|
elem_parse_failed = true; |
|
break; |
|
case WLAN_EID_BSS_MAX_IDLE_PERIOD: |
|
if (elen >= sizeof(*elems->max_idle_period_ie)) |
|
elems->max_idle_period_ie = (void *)pos; |
|
break; |
|
case WLAN_EID_RSNX: |
|
elems->rsnx = pos; |
|
elems->rsnx_len = elen; |
|
break; |
|
case WLAN_EID_TX_POWER_ENVELOPE: |
|
if (elen < 1 || |
|
elen > sizeof(struct ieee80211_tx_pwr_env)) |
|
break; |
|
|
|
if (elems->tx_pwr_env_num >= ARRAY_SIZE(elems->tx_pwr_env)) |
|
break; |
|
|
|
elems->tx_pwr_env[elems->tx_pwr_env_num] = (void *)pos; |
|
elems->tx_pwr_env_len[elems->tx_pwr_env_num] = elen; |
|
elems->tx_pwr_env_num++; |
|
break; |
|
case WLAN_EID_EXTENSION: |
|
ieee80211_parse_extension_element(calc_crc ? |
|
&crc : NULL, |
|
elem, elems, params); |
|
break; |
|
case WLAN_EID_S1G_CAPABILITIES: |
|
if (elen >= sizeof(*elems->s1g_capab)) |
|
elems->s1g_capab = (void *)pos; |
|
else |
|
elem_parse_failed = true; |
|
break; |
|
case WLAN_EID_S1G_OPERATION: |
|
if (elen == sizeof(*elems->s1g_oper)) |
|
elems->s1g_oper = (void *)pos; |
|
else |
|
elem_parse_failed = true; |
|
break; |
|
case WLAN_EID_S1G_BCN_COMPAT: |
|
if (elen == sizeof(*elems->s1g_bcn_compat)) |
|
elems->s1g_bcn_compat = (void *)pos; |
|
else |
|
elem_parse_failed = true; |
|
break; |
|
case WLAN_EID_AID_RESPONSE: |
|
if (elen == sizeof(struct ieee80211_aid_response_ie)) |
|
elems->aid_resp = (void *)pos; |
|
else |
|
elem_parse_failed = true; |
|
break; |
|
default: |
|
break; |
|
} |
|
|
|
if (elem_parse_failed) |
|
elems->parse_error = true; |
|
else |
|
__set_bit(id, seen_elems); |
|
} |
|
|
|
if (!for_each_element_completed(elem, params->start, params->len)) |
|
elems->parse_error = true; |
|
|
|
return crc; |
|
} |
|
|
|
static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len, |
|
struct ieee802_11_elems *elems, |
|
struct cfg80211_bss *bss, |
|
u8 *nontransmitted_profile) |
|
{ |
|
const struct element *elem, *sub; |
|
size_t profile_len = 0; |
|
bool found = false; |
|
|
|
if (!bss || !bss->transmitted_bss) |
|
return profile_len; |
|
|
|
for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) { |
|
if (elem->datalen < 2) |
|
continue; |
|
if (elem->data[0] < 1 || elem->data[0] > 8) |
|
continue; |
|
|
|
for_each_element(sub, elem->data + 1, elem->datalen - 1) { |
|
u8 new_bssid[ETH_ALEN]; |
|
const u8 *index; |
|
|
|
if (sub->id != 0 || sub->datalen < 4) { |
|
/* not a valid BSS profile */ |
|
continue; |
|
} |
|
|
|
if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP || |
|
sub->data[1] != 2) { |
|
/* The first element of the |
|
* Nontransmitted BSSID Profile is not |
|
* the Nontransmitted BSSID Capability |
|
* element. |
|
*/ |
|
continue; |
|
} |
|
|
|
memset(nontransmitted_profile, 0, len); |
|
profile_len = cfg80211_merge_profile(start, len, |
|
elem, |
|
sub, |
|
nontransmitted_profile, |
|
len); |
|
|
|
/* found a Nontransmitted BSSID Profile */ |
|
index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX, |
|
nontransmitted_profile, |
|
profile_len); |
|
if (!index || index[1] < 1 || index[2] == 0) { |
|
/* Invalid MBSSID Index element */ |
|
continue; |
|
} |
|
|
|
cfg80211_gen_new_bssid(bss->transmitted_bss->bssid, |
|
elem->data[0], |
|
index[2], |
|
new_bssid); |
|
if (ether_addr_equal(new_bssid, bss->bssid)) { |
|
found = true; |
|
elems->bssid_index_len = index[1]; |
|
elems->bssid_index = (void *)&index[2]; |
|
break; |
|
} |
|
} |
|
} |
|
|
|
return found ? profile_len : 0; |
|
} |
|
|
|
struct ieee802_11_elems * |
|
ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params) |
|
{ |
|
struct ieee802_11_elems *elems; |
|
const struct element *non_inherit = NULL; |
|
u8 *nontransmitted_profile; |
|
int nontransmitted_profile_len = 0; |
|
size_t scratch_len = params->len; |
|
|
|
elems = kzalloc(sizeof(*elems) + scratch_len, GFP_ATOMIC); |
|
if (!elems) |
|
return NULL; |
|
elems->ie_start = params->start; |
|
elems->total_len = params->len; |
|
elems->scratch_len = scratch_len; |
|
elems->scratch_pos = elems->scratch; |
|
|
|
nontransmitted_profile = elems->scratch_pos; |
|
nontransmitted_profile_len = |
|
ieee802_11_find_bssid_profile(params->start, params->len, |
|
elems, params->bss, |
|
nontransmitted_profile); |
|
elems->scratch_pos += nontransmitted_profile_len; |
|
elems->scratch_len -= nontransmitted_profile_len; |
|
non_inherit = cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE, |
|
nontransmitted_profile, |
|
nontransmitted_profile_len); |
|
|
|
elems->crc = _ieee802_11_parse_elems_full(params, elems, non_inherit); |
|
|
|
/* Override with nontransmitted profile, if found */ |
|
if (nontransmitted_profile_len) { |
|
struct ieee80211_elems_parse_params sub = { |
|
.start = nontransmitted_profile, |
|
.len = nontransmitted_profile_len, |
|
.action = params->action, |
|
.link_id = params->link_id, |
|
}; |
|
|
|
_ieee802_11_parse_elems_full(&sub, elems, NULL); |
|
} |
|
|
|
if (elems->tim && !elems->parse_error) { |
|
const struct ieee80211_tim_ie *tim_ie = elems->tim; |
|
|
|
elems->dtim_period = tim_ie->dtim_period; |
|
elems->dtim_count = tim_ie->dtim_count; |
|
} |
|
|
|
/* Override DTIM period and count if needed */ |
|
if (elems->bssid_index && |
|
elems->bssid_index_len >= |
|
offsetofend(struct ieee80211_bssid_index, dtim_period)) |
|
elems->dtim_period = elems->bssid_index->dtim_period; |
|
|
|
if (elems->bssid_index && |
|
elems->bssid_index_len >= |
|
offsetofend(struct ieee80211_bssid_index, dtim_count)) |
|
elems->dtim_count = elems->bssid_index->dtim_count; |
|
|
|
return elems; |
|
} |
|
|
|
void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, |
|
struct ieee80211_tx_queue_params |
|
*qparam, int ac) |
|
{ |
|
struct ieee80211_chanctx_conf *chanctx_conf; |
|
const struct ieee80211_reg_rule *rrule; |
|
const struct ieee80211_wmm_ac *wmm_ac; |
|
u16 center_freq = 0; |
|
|
|
if (sdata->vif.type != NL80211_IFTYPE_AP && |
|
sdata->vif.type != NL80211_IFTYPE_STATION) |
|
return; |
|
|
|
rcu_read_lock(); |
|
chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); |
|
if (chanctx_conf) |
|
center_freq = chanctx_conf->def.chan->center_freq; |
|
|
|
if (!center_freq) { |
|
rcu_read_unlock(); |
|
return; |
|
} |
|
|
|
rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq)); |
|
|
|
if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) { |
|
rcu_read_unlock(); |
|
return; |
|
} |
|
|
|
if (sdata->vif.type == NL80211_IFTYPE_AP) |
|
wmm_ac = &rrule->wmm_rule.ap[ac]; |
|
else |
|
wmm_ac = &rrule->wmm_rule.client[ac]; |
|
qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min); |
|
qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max); |
|
qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn); |
|
qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32); |
|
rcu_read_unlock(); |
|
} |
|
|
|
void ieee80211_set_wmm_default(struct ieee80211_link_data *link, |
|
bool bss_notify, bool enable_qos) |
|
{ |
|
struct ieee80211_sub_if_data *sdata = link->sdata; |
|
struct ieee80211_local *local = sdata->local; |
|
struct ieee80211_tx_queue_params qparam; |
|
struct ieee80211_chanctx_conf *chanctx_conf; |
|
int ac; |
|
bool use_11b; |
|
bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */ |
|
int aCWmin, aCWmax; |
|
|
|
if (!local->ops->conf_tx) |
|
return; |
|
|
|
if (local->hw.queues < IEEE80211_NUM_ACS) |
|
return; |
|
|
|
memset(&qparam, 0, sizeof(qparam)); |
|
|
|
rcu_read_lock(); |
|
chanctx_conf = rcu_dereference(link->conf->chanctx_conf); |
|
use_11b = (chanctx_conf && |
|
chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) && |
|
!link->operating_11g_mode; |
|
rcu_read_unlock(); |
|
|
|
is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB); |
|
|
|
/* Set defaults according to 802.11-2007 Table 7-37 */ |
|
aCWmax = 1023; |
|
if (use_11b) |
|
aCWmin = 31; |
|
else |
|
aCWmin = 15; |
|
|
|
/* Confiure old 802.11b/g medium access rules. */ |
|
qparam.cw_max = aCWmax; |
|
qparam.cw_min = aCWmin; |
|
qparam.txop = 0; |
|
qparam.aifs = 2; |
|
|
|
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
|
/* Update if QoS is enabled. */ |
|
if (enable_qos) { |
|
switch (ac) { |
|
case IEEE80211_AC_BK: |
|
qparam.cw_max = aCWmax; |
|
qparam.cw_min = aCWmin; |
|
qparam.txop = 0; |
|
if (is_ocb) |
|
qparam.aifs = 9; |
|
else |
|
qparam.aifs = 7; |
|
break; |
|
/* never happens but let's not leave undefined */ |
|
default: |
|
case IEEE80211_AC_BE: |
|
qparam.cw_max = aCWmax; |
|
qparam.cw_min = aCWmin; |
|
qparam.txop = 0; |
|
if (is_ocb) |
|
qparam.aifs = 6; |
|
else |
|
qparam.aifs = 3; |
|
break; |
|
case IEEE80211_AC_VI: |
|
qparam.cw_max = aCWmin; |
|
qparam.cw_min = (aCWmin + 1) / 2 - 1; |
|
if (is_ocb) |
|
qparam.txop = 0; |
|
else if (use_11b) |
|
qparam.txop = 6016/32; |
|
else |
|
qparam.txop = 3008/32; |
|
|
|
if (is_ocb) |
|
qparam.aifs = 3; |
|
else |
|
qparam.aifs = 2; |
|
break; |
|
case IEEE80211_AC_VO: |
|
qparam.cw_max = (aCWmin + 1) / 2 - 1; |
|
qparam.cw_min = (aCWmin + 1) / 4 - 1; |
|
if (is_ocb) |
|
qparam.txop = 0; |
|
else if (use_11b) |
|
qparam.txop = 3264/32; |
|
else |
|
qparam.txop = 1504/32; |
|
qparam.aifs = 2; |
|
break; |
|
} |
|
} |
|
ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac); |
|
|
|
qparam.uapsd = false; |
|
|
|
link->tx_conf[ac] = qparam; |
|
drv_conf_tx(local, link, ac, &qparam); |
|
} |
|
|
|
if (sdata->vif.type != NL80211_IFTYPE_MONITOR && |
|
sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && |
|
sdata->vif.type != NL80211_IFTYPE_NAN) { |
|
link->conf->qos = enable_qos; |
|
if (bss_notify) |
|
ieee80211_link_info_change_notify(sdata, link, |
|
BSS_CHANGED_QOS); |
|
} |
|
} |
|
|
|
void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
|
u16 transaction, u16 auth_alg, u16 status, |
|
const u8 *extra, size_t extra_len, const u8 *da, |
|
const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, |
|
u32 tx_flags) |
|
{ |
|
struct ieee80211_local *local = sdata->local; |
|
struct sk_buff *skb; |
|
struct ieee80211_mgmt *mgmt; |
|
bool multi_link = sdata->vif.valid_links; |
|
struct { |
|
u8 id; |
|
u8 len; |
|
u8 ext_id; |
|
struct ieee80211_multi_link_elem ml; |
|
struct ieee80211_mle_basic_common_info basic; |
|
} __packed mle = { |
|
.id = WLAN_EID_EXTENSION, |
|
.len = sizeof(mle) - 2, |
|
.ext_id = WLAN_EID_EXT_EHT_MULTI_LINK, |
|
.ml.control = cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC), |
|
.basic.len = sizeof(mle.basic), |
|
}; |
|
int err; |
|
|
|
memcpy(mle.basic.mld_mac_addr, sdata->vif.addr, ETH_ALEN); |
|
|
|
/* 24 + 6 = header + auth_algo + auth_transaction + status_code */ |
|
skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN + |
|
24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN + |
|
multi_link * sizeof(mle)); |
|
if (!skb) |
|
return; |
|
|
|
skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN); |
|
|
|
mgmt = skb_put_zero(skb, 24 + 6); |
|
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
|
IEEE80211_STYPE_AUTH); |
|
memcpy(mgmt->da, da, ETH_ALEN); |
|
memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
|
memcpy(mgmt->bssid, bssid, ETH_ALEN); |
|
mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); |
|
mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); |
|
mgmt->u.auth.status_code = cpu_to_le16(status); |
|
if (extra) |
|
skb_put_data(skb, extra, extra_len); |
|
if (multi_link) |
|
skb_put_data(skb, &mle, sizeof(mle)); |
|
|
|
if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { |
|
mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); |
|
err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); |
|
if (WARN_ON(err)) { |
|
kfree_skb(skb); |
|
return; |
|
} |
|
} |
|
|
|
IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
|
tx_flags; |
|
ieee80211_tx_skb(sdata, skb); |
|
} |
|
|
|
void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
|
const u8 *da, const u8 *bssid, |
|
u16 stype, u16 reason, |
|
bool send_frame, u8 *frame_buf) |
|
{ |
|
struct ieee80211_local *local = sdata->local; |
|
struct sk_buff *skb; |
|
struct ieee80211_mgmt *mgmt = (void *)frame_buf; |
|
|
|
/* build frame */ |
|
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); |
|
mgmt->duration = 0; /* initialize only */ |
|
mgmt->seq_ctrl = 0; /* initialize only */ |
|
memcpy(mgmt->da, da, ETH_ALEN); |
|
memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
|
memcpy(mgmt->bssid, bssid, ETH_ALEN); |
|
/* u.deauth.reason_code == u.disassoc.reason_code */ |
|
mgmt->u.deauth.reason_code = cpu_to_le16(reason); |
|
|
|
if (send_frame) { |
|
skb = dev_alloc_skb(local->hw.extra_tx_headroom + |
|
IEEE80211_DEAUTH_FRAME_LEN); |
|
if (!skb) |
|
return; |
|
|
|
skb_reserve(skb, local->hw.extra_tx_headroom); |
|
|
|
/* copy in frame */ |
|
skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN); |
|
|
|
if (sdata->vif.type != NL80211_IFTYPE_STATION || |
|
!(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) |
|
IEEE80211_SKB_CB(skb)->flags |= |
|
IEEE80211_TX_INTFL_DONT_ENCRYPT; |
|
|
|
ieee80211_tx_skb(sdata, skb); |
|
} |
|
} |
|
|
|
static u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end) |
|
{ |
|
if ((end - pos) < 5) |
|
return pos; |
|
|
|
*pos++ = WLAN_EID_EXTENSION; |
|
*pos++ = 1 + sizeof(cap); |
|
*pos++ = WLAN_EID_EXT_HE_6GHZ_CAPA; |
|
memcpy(pos, &cap, sizeof(cap)); |
|
|
|
return pos + 2; |
|
} |
|
|
|
static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata, |
|
u8 *buffer, size_t buffer_len, |
|
const u8 *ie, size_t ie_len, |
|
enum nl80211_band band, |
|
u32 rate_mask, |
|
struct cfg80211_chan_def *chandef, |
|
size_t *offset, u32 flags) |
|
{ |
|
struct ieee80211_local *local = sdata->local; |
|
struct ieee80211_supported_band *sband; |
|
const struct ieee80211_sta_he_cap *he_cap; |
|
const struct ieee80211_sta_eht_cap *eht_cap; |
|
u8 *pos = buffer, *end = buffer + buffer_len; |
|
size_t noffset; |
|
int supp_rates_len, i; |
|
u8 rates[32]; |
|
int num_rates; |
|
int ext_rates_len; |
|
int shift; |
|
u32 rate_flags; |
|
bool have_80mhz = false; |
|
|
|
*offset = 0; |
|
|
|
sband = local->hw.wiphy->bands[band]; |
|
if (WARN_ON_ONCE(!sband)) |
|
return 0; |
|
|
|
rate_flags = ieee80211_chandef_rate_flags(chandef); |
|
shift = ieee80211_chandef_get_shift(chandef); |
|
|
|
num_rates = 0; |
|
for (i = 0; i < sband->n_bitrates; i++) { |
|
if ((BIT(i) & rate_mask) == 0) |
|
continue; /* skip rate */ |
|
if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
|
continue; |
|
|
|
rates[num_rates++] = |
|
(u8) DIV_ROUND_UP(sband->bitrates[i].bitrate, |
|
(1 << shift) * 5); |
|
} |
|
|
|
supp_rates_len = min_t(int, num_rates, 8); |
|
|
|
if (end - pos < 2 + supp_rates_len) |
|
goto out_err; |
|
*pos++ = WLAN_EID_SUPP_RATES; |
|
*pos++ = supp_rates_len; |
|
memcpy(pos, rates, supp_rates_len); |
|
pos += supp_rates_len; |
|
|
|
/* insert "request information" if in custom IEs */ |
|
if (ie && ie_len) { |
|
static const u8 before_extrates[] = { |
|
WLAN_EID_SSID, |
|
WLAN_EID_SUPP_RATES, |
|
WLAN_EID_REQUEST, |
|
}; |
|
noffset = ieee80211_ie_split(ie, ie_len, |
|
before_extrates, |
|
ARRAY_SIZE(before_extrates), |
|
*offset); |
|
if (end - pos < noffset - *offset) |
|
goto out_err; |
|
memcpy(pos, ie + *offset, noffset - *offset); |
|
pos += noffset - *offset; |
|
*offset = noffset; |
|
} |
|
|
|
ext_rates_len = num_rates - supp_rates_len; |
|
if (ext_rates_len > 0) { |
|
if (end - pos < 2 + ext_rates_len) |
|
goto out_err; |
|
*pos++ = WLAN_EID_EXT_SUPP_RATES; |
|
*pos++ = ext_rates_len; |
|
memcpy(pos, rates + supp_rates_len, ext_rates_len); |
|
pos += ext_rates_len; |
|
} |
|
|
|
if (chandef->chan && sband->band == NL80211_BAND_2GHZ) { |
|
if (end - pos < 3) |
|
goto out_err; |
|
*pos++ = WLAN_EID_DS_PARAMS; |
|
*pos++ = 1; |
|
*pos++ = ieee80211_frequency_to_channel( |
|
chandef->chan->center_freq); |
|
} |
|
|
|
if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT) |
|
goto done; |
|
|
|
/* insert custom IEs that go before HT */ |
|
if (ie && ie_len) { |
|
static const u8 before_ht[] = { |
|
/* |
|
* no need to list the ones split off already |
|
* (or generated here) |
|
*/ |
|
WLAN_EID_DS_PARAMS, |
|
WLAN_EID_SUPPORTED_REGULATORY_CLASSES, |
|
}; |
|
noffset = ieee80211_ie_split(ie, ie_len, |
|
before_ht, ARRAY_SIZE(before_ht), |
|
*offset); |
|
if (end - pos < noffset - *offset) |
|
goto out_err; |
|
memcpy(pos, ie + *offset, noffset - *offset); |
|
pos += noffset - *offset; |
|
*offset = noffset; |
|
} |
|
|
|
if (sband->ht_cap.ht_supported) { |
|
if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) |
|
goto out_err; |
|
pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, |
|
sband->ht_cap.cap); |
|
} |
|
|
|
/* insert custom IEs that go before VHT */ |
|
if (ie && ie_len) { |
|
static const u8 before_vht[] = { |
|
/* |
|
* no need to list the ones split off already |
|
* (or generated here) |
|
*/ |
|
WLAN_EID_BSS_COEX_2040, |
|
WLAN_EID_EXT_CAPABILITY, |
|
WLAN_EID_SSID_LIST, |
|
WLAN_EID_CHANNEL_USAGE, |
|
WLAN_EID_INTERWORKING, |
|
WLAN_EID_MESH_ID, |
|
/* 60 GHz (Multi-band, DMG, MMS) can't happen */ |
|
}; |
|
noffset = ieee80211_ie_split(ie, ie_len, |
|
before_vht, ARRAY_SIZE(before_vht), |
|
*offset); |
|
if (end - pos < noffset - *offset) |
|
goto out_err; |
|
memcpy(pos, ie + *offset, noffset - *offset); |
|
pos += noffset - *offset; |
|
*offset = noffset; |
|
} |
|
|
|
/* Check if any channel in this sband supports at least 80 MHz */ |
|
for (i = 0; i < sband->n_channels; i++) { |
|
if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | |
|
IEEE80211_CHAN_NO_80MHZ)) |
|
continue; |
|
|
|
have_80mhz = true; |
|
break; |
|
} |
|
|
|
if (sband->vht_cap.vht_supported && have_80mhz) { |
|
if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) |
|
goto out_err; |
|
pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, |
|
sband->vht_cap.cap); |
|
} |
|
|
|
/* insert custom IEs that go before HE */ |
|
if (ie && ie_len) { |
|
static const u8 before_he[] = { |
|
/* |
|
* no need to list the ones split off before VHT |
|
* or generated here |
|
*/ |
|
WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS, |
|
WLAN_EID_AP_CSN, |
|
/* TODO: add 11ah/11aj/11ak elements */ |
|
}; |
|
noffset = ieee80211_ie_split(ie, ie_len, |
|
before_he, ARRAY_SIZE(before_he), |
|
*offset); |
|
if (end - pos < noffset - *offset) |
|
goto out_err; |
|
memcpy(pos, ie + *offset, noffset - *offset); |
|
pos += noffset - *offset; |
|
*offset = noffset; |
|
} |
|
|
|
he_cap = ieee80211_get_he_iftype_cap(sband, |
|
ieee80211_vif_type_p2p(&sdata->vif)); |
|
if (he_cap && |
|
cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), |
|
IEEE80211_CHAN_NO_HE)) { |
|
pos = ieee80211_ie_build_he_cap(0, pos, he_cap, end); |
|
if (!pos) |
|
goto out_err; |
|
} |
|
|
|
eht_cap = ieee80211_get_eht_iftype_cap(sband, |
|
ieee80211_vif_type_p2p(&sdata->vif)); |
|
|
|
if (eht_cap && |
|
cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), |
|
IEEE80211_CHAN_NO_HE | |
|
IEEE80211_CHAN_NO_EHT)) { |
|
pos = ieee80211_ie_build_eht_cap(pos, he_cap, eht_cap, end, |
|
sdata->vif.type == NL80211_IFTYPE_AP); |
|
if (!pos) |
|
goto out_err; |
|
} |
|
|
|
if (cfg80211_any_usable_channels(local->hw.wiphy, |
|
BIT(NL80211_BAND_6GHZ), |
|
IEEE80211_CHAN_NO_HE)) { |
|
struct ieee80211_supported_band *sband6; |
|
|
|
sband6 = local->hw.wiphy->bands[NL80211_BAND_6GHZ]; |
|
he_cap = ieee80211_get_he_iftype_cap(sband6, |
|
ieee80211_vif_type_p2p(&sdata->vif)); |
|
|
|
if (he_cap) { |
|
enum nl80211_iftype iftype = |
|
ieee80211_vif_type_p2p(&sdata->vif); |
|
__le16 cap = ieee80211_get_he_6ghz_capa(sband6, iftype); |
|
|
|
pos = ieee80211_write_he_6ghz_cap(pos, cap, end); |
|
} |
|
} |
|
|
|
/* |
|
* If adding more here, adjust code in main.c |
|
* that calculates local->scan_ies_len. |
|
*/ |
|
|
|
return pos - buffer; |
|
out_err: |
|
WARN_ONCE(1, "not enough space for preq IEs\n"); |
|
done: |
|
return pos - buffer; |
|
} |
|
|
|
int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, |
|
size_t buffer_len, |
|
struct ieee80211_scan_ies *ie_desc, |
|
const u8 *ie, size_t ie_len, |
|
u8 bands_used, u32 *rate_masks, |
|
struct cfg80211_chan_def *chandef, |
|
u32 flags) |
|
{ |
|
size_t pos = 0, old_pos = 0, custom_ie_offset = 0; |
|
int i; |
|
|
|
memset(ie_desc, 0, sizeof(*ie_desc)); |
|
|
|
for (i = 0; i < NUM_NL80211_BANDS; i++) { |
|
if (bands_used & BIT(i)) { |
|
pos += ieee80211_build_preq_ies_band(sdata, |
|
buffer + pos, |
|
buffer_len - pos, |
|
ie, ie_len, i, |
|
rate_masks[i], |
|
chandef, |
|
&custom_ie_offset, |
|
flags); |
|
ie_desc->ies[i] = buffer + old_pos; |
|
ie_desc->len[i] = pos - old_pos; |
|
old_pos = pos; |
|
} |
|
} |
|
|
|
/* add any remaining custom IEs */ |
|
if (ie && ie_len) { |
|
if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset, |
|
"not enough space for preq custom IEs\n")) |
|
return pos; |
|
memcpy(buffer + pos, ie + custom_ie_offset, |
|
ie_len - custom_ie_offset); |
|
ie_desc->common_ies = buffer + pos; |
|
ie_desc->common_ie_len = ie_len - custom_ie_offset; |
|
pos += ie_len - custom_ie_offset; |
|
} |
|
|
|
return pos; |
|
}; |
|
|
|
struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, |
|
const u8 *src, const u8 *dst, |
|
u32 ratemask, |
|
struct ieee80211_channel *chan, |
|
const u8 *ssid, size_t ssid_len, |
|
const u8 *ie, size_t ie_len, |
|
u32 flags) |
|
{ |
|
struct ieee80211_local *local = sdata->local; |
|
struct cfg80211_chan_def chandef; |
|
struct sk_buff *skb; |
|
struct ieee80211_mgmt *mgmt; |
|
int ies_len; |
|
u32 rate_masks[NUM_NL80211_BANDS] = {}; |
|
struct ieee80211_scan_ies dummy_ie_desc; |
|
|
|
/* |
|
* Do not send DS Channel parameter for directed probe requests |
|
* in order to maximize the chance that we get a response. Some |
|
* badly-behaved APs don't respond when this parameter is included. |
|
*/ |
|
chandef.width = sdata->vif.bss_conf.chandef.width; |
|
if (flags & IEEE80211_PROBE_FLAG_DIRECTED) |
|
chandef.chan = NULL; |
|
else |
|
chandef.chan = chan; |
|
|
|
skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len, |
|
local->scan_ies_len + ie_len); |
|
if (!skb) |
|
return NULL; |
|
|
|
rate_masks[chan->band] = ratemask; |
|
ies_len = ieee80211_build_preq_ies(sdata, skb_tail_pointer(skb), |
|
skb_tailroom(skb), &dummy_ie_desc, |
|
ie, ie_len, BIT(chan->band), |
|
rate_masks, &chandef, flags); |
|
skb_put(skb, ies_len); |
|
|
|
if (dst) { |
|
mgmt = (struct ieee80211_mgmt *) skb->data; |
|
memcpy(mgmt->da, dst, ETH_ALEN); |
|
memcpy(mgmt->bssid, dst, ETH_ALEN); |
|
} |
|
|
|
IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
|
|
|
return skb; |
|
} |
|
|
|
u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, |
|
struct ieee802_11_elems *elems, |
|
enum nl80211_band band, u32 *basic_rates) |
|
{ |
|
struct ieee80211_supported_band *sband; |
|
size_t num_rates; |
|
u32 supp_rates, rate_flags; |
|
int i, j, shift; |
|
|
|
sband = sdata->local->hw.wiphy->bands[band]; |
|
if (WARN_ON(!sband)) |
|
return 1; |
|
|
|
rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); |
|
shift = ieee80211_vif_get_shift(&sdata->vif); |
|
|
|
num_rates = sband->n_bitrates; |
|
supp_rates = 0; |
|
for (i = 0; i < elems->supp_rates_len + |
|
elems->ext_supp_rates_len; i++) { |
|
u8 rate = 0; |
|
int own_rate; |
|
bool is_basic; |
|
if (i < elems->supp_rates_len) |
|
rate = elems->supp_rates[i]; |
|
else if (elems->ext_supp_rates) |
|
rate = elems->ext_supp_rates |
|
[i - elems->supp_rates_len]; |
|
own_rate = 5 * (rate & 0x7f); |
|
is_basic = !!(rate & 0x80); |
|
|
|
if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) |
|
continue; |
|
|
|
for (j = 0; j < num_rates; j++) { |
|
int brate; |
|
if ((rate_flags & sband->bitrates[j].flags) |
|
!= rate_flags) |
|
continue; |
|
|
|
brate = DIV_ROUND_UP(sband->bitrates[j].bitrate, |
|
1 << shift); |
|
|
|
if (brate == own_rate) { |
|
supp_rates |= BIT(j); |
|
if (basic_rates && is_basic) |
|
*basic_rates |= BIT(j); |
|
} |
|
} |
|
} |
|
return supp_rates; |
|
} |
|
|
|
void ieee80211_stop_device(struct ieee80211_local *local) |
|
{ |
|
ieee80211_led_radio(local, false); |
|
ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); |
|
|
|
cancel_work_sync(&local->reconfig_filter); |
|
|
|
flush_workqueue(local->workqueue); |
|
drv_stop(local); |
|
} |
|
|
|
static void ieee80211_flush_completed_scan(struct ieee80211_local *local, |
|
bool aborted) |
|
{ |
|
/* It's possible that we don't handle the scan completion in |
|
* time during suspend, so if it's still marked as completed |
|
* here, queue the work and flush it to clean things up. |
|
* Instead of calling the worker function directly here, we |
|
* really queue it to avoid potential races with other flows |
|
* scheduling the same work. |
|
*/ |
|
if (test_bit(SCAN_COMPLETED, &local->scanning)) { |
|
/* If coming from reconfiguration failure, abort the scan so |
|
* we don't attempt to continue a partial HW scan - which is |
|
* possible otherwise if (e.g.) the 2.4 GHz portion was the |
|
* completed scan, and a 5 GHz portion is still pending. |
|
*/ |
|
if (aborted) |
|
set_bit(SCAN_ABORTED, &local->scanning); |
|
ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0); |
|
flush_delayed_work(&local->scan_work); |
|
} |
|
} |
|
|
|
static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) |
|
{ |
|
struct ieee80211_sub_if_data *sdata; |
|
struct ieee80211_chanctx *ctx; |
|
|
|
/* |
|
* We get here if during resume the device can't be restarted properly. |
|
* We might also get here if this happens during HW reset, which is a |
|
* slightly different situation and we need to drop all connections in |
|
* the latter case. |
|
* |
|
* Ask cfg80211 to turn off all interfaces, this will result in more |
|
* warnings but at least we'll then get into a clean stopped state. |
|
*/ |
|
|
|
local->resuming = false; |
|
local->suspended = false; |
|
local->in_reconfig = false; |
|
|
|
ieee80211_flush_completed_scan(local, true); |
|
|
|
/* scheduled scan clearly can't be running any more, but tell |
|
* cfg80211 and clear local state |
|
*/ |
|
ieee80211_sched_scan_end(local); |
|
|
|
list_for_each_entry(sdata, &local->interfaces, list) |
|
sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; |
|
|
|
/* Mark channel contexts as not being in the driver any more to avoid |
|
* removing them from the driver during the shutdown process... |
|
*/ |
|
mutex_lock(&local->chanctx_mtx); |
|
list_for_each_entry(ctx, &local->chanctx_list, list) |
|
ctx->driver_present = false; |
|
mutex_unlock(&local->chanctx_mtx); |
|
} |
|
|
|
static void ieee80211_assign_chanctx(struct ieee80211_local *local, |
|
struct ieee80211_sub_if_data *sdata, |
|
struct ieee80211_link_data *link) |
|
{ |
|
struct ieee80211_chanctx_conf *conf; |
|
struct ieee80211_chanctx *ctx; |
|
|
|
if (!local->use_chanctx) |
|
return; |
|
|
|
mutex_lock(&local->chanctx_mtx); |
|
conf = rcu_dereference_protected(link->conf->chanctx_conf, |
|
lockdep_is_held(&local->chanctx_mtx)); |
|
if (conf) { |
|
ctx = container_of(conf, struct ieee80211_chanctx, conf); |
|
drv_assign_vif_chanctx(local, sdata, link->conf, ctx); |
|
} |
|
mutex_unlock(&local->chanctx_mtx); |
|
} |
|
|
|
static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata) |
|
{ |
|
struct ieee80211_local *local = sdata->local; |
|
struct sta_info *sta; |
|
|
|
/* add STAs back */ |
|
mutex_lock(&local->sta_mtx); |
|
list_for_each_entry(sta, &local->sta_list, list) { |
|
enum ieee80211_sta_state state; |
|
|
|
if (!sta->uploaded || sta->sdata != sdata) |
|
continue; |
|
|
|
for (state = IEEE80211_STA_NOTEXIST; |
|
state < sta->sta_state; state++) |
|
WARN_ON(drv_sta_state(local, sta->sdata, sta, state, |
|
state + 1)); |
|
} |
|
mutex_unlock(&local->sta_mtx); |
|
} |
|
|
|
static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata) |
|
{ |
|
struct cfg80211_nan_func *func, **funcs; |
|
int res, id, i = 0; |
|
|
|
res = drv_start_nan(sdata->local, sdata, |
|
&sdata->u.nan.conf); |
|
if (WARN_ON(res)) |
|
return res; |
|
|
|
funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1, |
|
sizeof(*funcs), |
|
GFP_KERNEL); |
|
if (!funcs) |
|
return -ENOMEM; |
|
|
|
/* Add all the functions: |
|
* This is a little bit ugly. We need to call a potentially sleeping |
|
* callback for each NAN function, so we can't hold the spinlock. |
|
*/ |
|
spin_lock_bh(&sdata->u.nan.func_lock); |
|
|
|
idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) |
|
funcs[i++] = func; |
|
|
|
spin_unlock_bh(&sdata->u.nan.func_lock); |
|
|
|
for (i = 0; funcs[i]; i++) { |
|
res = drv_add_nan_func(sdata->local, sdata, funcs[i]); |
|
if (WARN_ON(res)) |
|
ieee80211_nan_func_terminated(&sdata->vif, |
|
funcs[i]->instance_id, |
|
NL80211_NAN_FUNC_TERM_REASON_ERROR, |
|
GFP_KERNEL); |
|
} |
|
|
|
kfree(funcs); |
|
|
|
return 0; |
|
} |
|
|
|
int ieee80211_reconfig(struct ieee80211_local *local) |
|
{ |
|
struct ieee80211_hw *hw = &local->hw; |
|
struct ieee80211_sub_if_data *sdata; |
|
struct ieee80211_chanctx *ctx; |
|
struct sta_info *sta; |
|
int res, i; |
|
bool reconfig_due_to_wowlan = false; |
|
struct ieee80211_sub_if_data *sched_scan_sdata; |
|
struct cfg80211_sched_scan_request *sched_scan_req; |
|
bool sched_scan_stopped = false; |
|
bool suspended = local->suspended; |
|
bool in_reconfig = false; |
|
|
|
/* nothing to do if HW shouldn't run */ |
|
if (!local->open_count) |
|
goto wake_up; |
|
|
|
#ifdef CONFIG_PM |
|
if (suspended) |
|
local->resuming = true; |
|
|
|
if (local->wowlan) { |
|
/* |
|
* In the wowlan case, both mac80211 and the device |
|
* are functional when the resume op is called, so |
|
* clear local->suspended so the device could operate |
|
* normally (e.g. pass rx frames). |
|
*/ |
|
local->suspended = false; |
|
res = drv_resume(local); |
|
local->wowlan = false; |
|
if (res < 0) { |
|
local->resuming = false; |
|
return res; |
|
} |
|
if (res == 0) |
|
goto wake_up; |
|
WARN_ON(res > 1); |
|
/* |
|
* res is 1, which means the driver requested |
|
* to go through a regular reset on wakeup. |
|
* restore local->suspended in this case. |
|
*/ |
|
reconfig_due_to_wowlan = true; |
|
local->suspended = true; |
|
} |
|
#endif |
|
|
|
/* |
|
* In case of hw_restart during suspend (without wowlan), |
|
* cancel restart work, as we are reconfiguring the device |
|
* anyway. |
|
* Note that restart_work is scheduled on a frozen workqueue, |
|
* so we can't deadlock in this case. |
|
*/ |
|
if (suspended && local->in_reconfig && !reconfig_due_to_wowlan) |
|
cancel_work_sync(&local->restart_work); |
|
|
|
local->started = false; |
|
|
|
/* |
|
* Upon resume hardware can sometimes be goofy due to |
|
* various platform / driver / bus issues, so restarting |
|
* the device may at times not work immediately. Propagate |
|
* the error. |
|
*/ |
|
res = drv_start(local); |
|
if (res) { |
|
if (suspended) |
|
WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); |
|
else |
|
WARN(1, "Hardware became unavailable during restart.\n"); |
|
ieee80211_handle_reconfig_failure(local); |
|
return res; |
|
} |
|
|
|
/* setup fragmentation threshold */ |
|
drv_set_frag_threshold(local, hw->wiphy->frag_threshold); |
|
|
|
/* setup RTS threshold */ |
|
drv_set_rts_threshold(local, hw->wiphy->rts_threshold); |
|
|
|
/* reset coverage class */ |
|
drv_set_coverage_class(local, hw->wiphy->coverage_class); |
|
|
|
ieee80211_led_radio(local, true); |
|
ieee80211_mod_tpt_led_trig(local, |
|
IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); |
|
|
|
/* add interfaces */ |
|
sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); |
|
if (sdata) { |
|
/* in HW restart it exists already */ |
|
WARN_ON(local->resuming); |
|
res = drv_add_interface(local, sdata); |
|
if (WARN_ON(res)) { |
|
RCU_INIT_POINTER(local->monitor_sdata, NULL); |
|
synchronize_net(); |
|
kfree(sdata); |
|
} |
|
} |
|
|
|
list_for_each_entry(sdata, &local->interfaces, list) { |
|
if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && |
|
sdata->vif.type != NL80211_IFTYPE_MONITOR && |
|
ieee80211_sdata_running(sdata)) { |
|
res = drv_add_interface(local, sdata); |
|
if (WARN_ON(res)) |
|
break; |
|
} |
|
} |
|
|
|
/* If adding any of the interfaces failed above, roll back and |
|
* report failure. |
|
*/ |
|
if (res) { |
|
list_for_each_entry_continue_reverse(sdata, &local->interfaces, |
|
list) |
|
if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && |
|
sdata->vif.type != NL80211_IFTYPE_MONITOR && |
|
ieee80211_sdata_running(sdata)) |
|
drv_remove_interface(local, sdata); |
|
ieee80211_handle_reconfig_failure(local); |
|
return res; |
|
} |
|
|
|
/* add channel contexts */ |
|
if (local->use_chanctx) { |
|
mutex_lock(&local->chanctx_mtx); |
|
list_for_each_entry(ctx, &local->chanctx_list, list) |
|
if (ctx->replace_state != |
|
IEEE80211_CHANCTX_REPLACES_OTHER) |
|
WARN_ON(drv_add_chanctx(local, ctx)); |
|
mutex_unlock(&local->chanctx_mtx); |
|
|
|
sdata = wiphy_dereference(local->hw.wiphy, |
|
local->monitor_sdata); |
|
if (sdata && ieee80211_sdata_running(sdata)) |
|
ieee80211_assign_chanctx(local, sdata, &sdata->deflink); |
|
} |
|
|
|
/* reconfigure hardware */ |
|
ieee80211_hw_config(local, ~0); |
|
|
|
ieee80211_configure_filter(local); |
|
|
|
/* Finally also reconfigure all the BSS information */ |
|
list_for_each_entry(sdata, &local->interfaces, list) { |
|
unsigned int link_id; |
|
u32 changed; |
|
|
|
if (!ieee80211_sdata_running(sdata)) |
|
continue; |
|
|
|
sdata_lock(sdata); |
|
for (link_id = 0; |
|
link_id < ARRAY_SIZE(sdata->vif.link_conf); |
|
link_id++) { |
|
struct ieee80211_link_data *link; |
|
|
|
link = sdata_dereference(sdata->link[link_id], sdata); |
|
if (link) |
|
ieee80211_assign_chanctx(local, sdata, link); |
|
} |
|
|
|
switch (sdata->vif.type) { |
|
case NL80211_IFTYPE_AP_VLAN: |
|
case NL80211_IFTYPE_MONITOR: |
|
break; |
|
case NL80211_IFTYPE_ADHOC: |
|
if (sdata->vif.cfg.ibss_joined) |
|
WARN_ON(drv_join_ibss(local, sdata)); |
|
fallthrough; |
|
default: |
|
ieee80211_reconfig_stations(sdata); |
|
fallthrough; |
|
case NL80211_IFTYPE_AP: /* AP stations are handled later */ |
|
for (i = 0; i < IEEE80211_NUM_ACS; i++) |
|
drv_conf_tx(local, &sdata->deflink, i, |
|
&sdata->deflink.tx_conf[i]); |
|
break; |
|
} |
|
sdata_unlock(sdata); |
|
|
|
/* common change flags for all interface types */ |
|
changed = BSS_CHANGED_ERP_CTS_PROT | |
|
BSS_CHANGED_ERP_PREAMBLE | |
|
BSS_CHANGED_ERP_SLOT | |
|
BSS_CHANGED_HT | |
|
BSS_CHANGED_BASIC_RATES | |
|
BSS_CHANGED_BEACON_INT | |
|
BSS_CHANGED_BSSID | |
|
BSS_CHANGED_CQM | |
|
BSS_CHANGED_QOS | |
|
BSS_CHANGED_IDLE | |
|
BSS_CHANGED_TXPOWER | |
|
BSS_CHANGED_MCAST_RATE; |
|
|
|
if (sdata->vif.bss_conf.mu_mimo_owner) |
|
changed |= BSS_CHANGED_MU_GROUPS; |
|
|
|
switch (sdata->vif.type) { |
|
case NL80211_IFTYPE_STATION: |
|
changed |= BSS_CHANGED_ASSOC | |
|
BSS_CHANGED_ARP_FILTER | |
|
BSS_CHANGED_PS; |
|
|
|
/* Re-send beacon info report to the driver */ |
|
if (sdata->deflink.u.mgd.have_beacon) |
|
changed |= BSS_CHANGED_BEACON_INFO; |
|
|
|
if (sdata->vif.bss_conf.max_idle_period || |
|
sdata->vif.bss_conf.protected_keep_alive) |
|
changed |= BSS_CHANGED_KEEP_ALIVE; |
|
|
|
sdata_lock(sdata); |
|
ieee80211_bss_info_change_notify(sdata, changed); |
|
sdata_unlock(sdata); |
|
break; |
|
case NL80211_IFTYPE_OCB: |
|
changed |= BSS_CHANGED_OCB; |
|
ieee80211_bss_info_change_notify(sdata, changed); |
|
break; |
|
case NL80211_IFTYPE_ADHOC: |
|
changed |= BSS_CHANGED_IBSS; |
|
fallthrough; |
|
case NL80211_IFTYPE_AP: |
|
changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS; |
|
|
|
if (sdata->vif.bss_conf.ftm_responder == 1 && |
|
wiphy_ext_feature_isset(sdata->local->hw.wiphy, |
|
NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER)) |
|
changed |= BSS_CHANGED_FTM_RESPONDER; |
|
|
|
if (sdata->vif.type == NL80211_IFTYPE_AP) { |
|
changed |= BSS_CHANGED_AP_PROBE_RESP; |
|
|
|
if (rcu_access_pointer(sdata->deflink.u.ap.beacon)) |
|
drv_start_ap(local, sdata, |
|
sdata->deflink.conf); |
|
} |
|
fallthrough; |
|
case NL80211_IFTYPE_MESH_POINT: |
|
if (sdata->vif.bss_conf.enable_beacon) { |
|
changed |= BSS_CHANGED_BEACON | |
|
BSS_CHANGED_BEACON_ENABLED; |
|
ieee80211_bss_info_change_notify(sdata, changed); |
|
} |
|
break; |
|
case NL80211_IFTYPE_NAN: |
|
res = ieee80211_reconfig_nan(sdata); |
|
if (res < 0) { |
|
ieee80211_handle_reconfig_failure(local); |
|
return res; |
|
} |
|
break; |
|
case NL80211_IFTYPE_AP_VLAN: |
|
case NL80211_IFTYPE_MONITOR: |
|
case NL80211_IFTYPE_P2P_DEVICE: |
|
/* nothing to do */ |
|
break; |
|
case NL80211_IFTYPE_UNSPECIFIED: |
|
case NUM_NL80211_IFTYPES: |
|
case NL80211_IFTYPE_P2P_CLIENT: |
|
case NL80211_IFTYPE_P2P_GO: |
|
case NL80211_IFTYPE_WDS: |
|
WARN_ON(1); |
|
break; |
|
} |
|
} |
|
|
|
ieee80211_recalc_ps(local); |
|
|
|
/* |
|
* The sta might be in psm against the ap (e.g. because |
|
* this was the state before a hw restart), so we |
|
* explicitly send a null packet in order to make sure |
|
* it'll sync against the ap (and get out of psm). |
|
*/ |
|
if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { |
|
list_for_each_entry(sdata, &local->interfaces, list) { |
|
if (sdata->vif.type != NL80211_IFTYPE_STATION) |
|
continue; |
|
if (!sdata->u.mgd.associated) |
|
continue; |
|
|
|
ieee80211_send_nullfunc(local, sdata, false); |
|
} |
|
} |
|
|
|
/* APs are now beaconing, add back stations */ |
|
list_for_each_entry(sdata, &local->interfaces, list) { |
|
if (!ieee80211_sdata_running(sdata)) |
|
continue; |
|
|
|
sdata_lock(sdata); |
|
switch (sdata->vif.type) { |
|
case NL80211_IFTYPE_AP_VLAN: |
|
case NL80211_IFTYPE_AP: |
|
ieee80211_reconfig_stations(sdata); |
|
break; |
|
default: |
|
break; |
|
} |
|
sdata_unlock(sdata); |
|
} |
|
|
|
/* add back keys */ |
|
list_for_each_entry(sdata, &local->interfaces, list) |
|
ieee80211_reenable_keys(sdata); |
|
|
|
/* Reconfigure sched scan if it was interrupted by FW restart */ |
|
mutex_lock(&local->mtx); |
|
sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, |
|
lockdep_is_held(&local->mtx)); |
|
sched_scan_req = rcu_dereference_protected(local->sched_scan_req, |
|
lockdep_is_held(&local->mtx)); |
|
if (sched_scan_sdata && sched_scan_req) |
|
/* |
|
* Sched scan stopped, but we don't want to report it. Instead, |
|
* we're trying to reschedule. However, if more than one scan |
|
* plan was set, we cannot reschedule since we don't know which |
|
* scan plan was currently running (and some scan plans may have |
|
* already finished). |
|
*/ |
|
if (sched_scan_req->n_scan_plans > 1 || |
|
__ieee80211_request_sched_scan_start(sched_scan_sdata, |
|
sched_scan_req)) { |
|
RCU_INIT_POINTER(local->sched_scan_sdata, NULL); |
|
RCU_INIT_POINTER(local->sched_scan_req, NULL); |
|
sched_scan_stopped = true; |
|
} |
|
mutex_unlock(&local->mtx); |
|
|
|
if (sched_scan_stopped) |
|
cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0); |
|
|
|
wake_up: |
|
|
|
if (local->monitors == local->open_count && local->monitors > 0) |
|
ieee80211_add_virtual_monitor(local); |
|
|
|
/* |
|
* Clear the WLAN_STA_BLOCK_BA flag so new aggregation |
|
* sessions can be established after a resume. |
|
* |
|
* Also tear down aggregation sessions since reconfiguring |
|
* them in a hardware restart scenario is not easily done |
|
* right now, and the hardware will have lost information |
|
* about the sessions, but we and the AP still think they |
|
* are active. This is really a workaround though. |
|
*/ |
|
if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) { |
|
mutex_lock(&local->sta_mtx); |
|
|
|
list_for_each_entry(sta, &local->sta_list, list) { |
|
if (!local->resuming) |
|
ieee80211_sta_tear_down_BA_sessions( |
|
sta, AGG_STOP_LOCAL_REQUEST); |
|
clear_sta_flag(sta, WLAN_STA_BLOCK_BA); |
|
} |
|
|
|
mutex_unlock(&local->sta_mtx); |
|
} |
|
|
|
/* |
|
* If this is for hw restart things are still running. |
|
* We may want to change that later, however. |
|
*/ |
|
if (local->open_count && (!suspended || reconfig_due_to_wowlan)) |
|
drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART); |
|
|
|
if (local->in_reconfig) { |
|
in_reconfig = local->in_reconfig; |
|
local->in_reconfig = false; |
|
barrier(); |
|
|
|
/* Restart deferred ROCs */ |
|
mutex_lock(&local->mtx); |
|
ieee80211_start_next_roc(local); |
|
mutex_unlock(&local->mtx); |
|
|
|
/* Requeue all works */ |
|
list_for_each_entry(sdata, &local->interfaces, list) |
|
ieee80211_queue_work(&local->hw, &sdata->work); |
|
} |
|
|
|
ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
|
IEEE80211_QUEUE_STOP_REASON_SUSPEND, |
|
false); |
|
|
|
if (in_reconfig) { |
|
list_for_each_entry(sdata, &local->interfaces, list) { |
|
if (!ieee80211_sdata_running(sdata)) |
|
continue; |
|
if (sdata->vif.type == NL80211_IFTYPE_STATION) |
|
ieee80211_sta_restart(sdata); |
|
} |
|
} |
|
|
|
if (!suspended) |
|
return 0; |
|
|
|
#ifdef CONFIG_PM |
|
/* first set suspended false, then resuming */ |
|
local->suspended = false; |
|
mb(); |
|
local->resuming = false; |
|
|
|
ieee80211_flush_completed_scan(local, false); |
|
|
|
if (local->open_count && !reconfig_due_to_wowlan) |
|
drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND); |
|
|
|
list_for_each_entry(sdata, &local->interfaces, list) { |
|
if (!ieee80211_sdata_running(sdata)) |
|
continue; |
|
if (sdata->vif.type == NL80211_IFTYPE_STATION) |
|
ieee80211_sta_restart(sdata); |
|
} |
|
|
|
mod_timer(&local->sta_cleanup, jiffies + 1); |
|
#else |
|
WARN_ON(1); |
|
#endif |
|
|
|
return 0; |
|
} |
|
|
|
static void ieee80211_reconfig_disconnect(struct ieee80211_vif *vif, u8 flag) |
|
{ |
|
struct ieee80211_sub_if_data *sdata; |
|
struct ieee80211_local *local; |
|
struct ieee80211_key *key; |
|
|
|
if (WARN_ON(!vif)) |
|
return; |
|
|
|
sdata = vif_to_sdata(vif); |
|
local = sdata->local; |
|
|
|
if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_RESUME && |
|
!local->resuming)) |
|
return; |
|
|
|
if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_HW_RESTART && |
|
!local->in_reconfig)) |
|
return; |
|
|
|
if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) |
|
return; |
|
|
|
sdata->flags |= flag; |
|
|
|
mutex_lock(&local->key_mtx); |
|
list_for_each_entry(key, &sdata->key_list, list) |
|
key->flags |= KEY_FLAG_TAINTED; |
|
mutex_unlock(&local->key_mtx); |
|
} |
|
|
|
void ieee80211_hw_restart_disconnect(struct ieee80211_vif *vif) |
|
{ |
|
ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_HW_RESTART); |
|
} |
|
EXPORT_SYMBOL_GPL(ieee80211_hw_restart_disconnect); |
|
|
|
void ieee80211_resume_disconnect(struct ieee80211_vif *vif) |
|
{ |
|
ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_RESUME); |
|
} |
|
EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); |
|
|
|
void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata, |
|
struct ieee80211_link_data *link) |
|
{ |
|
struct ieee80211_local *local = sdata->local; |
|
struct ieee80211_chanctx_conf *chanctx_conf; |
|
struct ieee80211_chanctx *chanctx; |
|
|
|
mutex_lock(&local->chanctx_mtx); |
|
|
|
chanctx_conf = rcu_dereference_protected(link->conf->chanctx_conf, |
|
lockdep_is_held(&local->chanctx_mtx)); |
|
|
|
/* |
|
* This function can be called from a work, thus it may be possible |
|
* that the chanctx_conf is removed (due to a disconnection, for |
|
* example). |
|
* So nothing should be done in such case. |
|
*/ |
|
if (!chanctx_conf) |
|
goto unlock; |
|
|
|
chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); |
|
ieee80211_recalc_smps_chanctx(local, chanctx); |
|
unlock: |
|
mutex_unlock(&local->chanctx_mtx); |
|
} |
|
|
|
void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata, |
|
int link_id) |
|
{ |
|
struct ieee80211_local *local = sdata->local; |
|
struct ieee80211_chanctx_conf *chanctx_conf; |
|
struct ieee80211_chanctx *chanctx; |
|
int i; |
|
|
|
mutex_lock(&local->chanctx_mtx); |
|
|
|
for (i = 0; i < ARRAY_SIZE(sdata->vif.link_conf); i++) { |
|
struct ieee80211_bss_conf *bss_conf; |
|
|
|
if (link_id >= 0 && link_id != i) |
|
continue; |
|
|
|
rcu_read_lock(); |
|
bss_conf = rcu_dereference(sdata->vif.link_conf[i]); |
|
if (!bss_conf) { |
|
rcu_read_unlock(); |
|
continue; |
|
} |
|
|
|
chanctx_conf = rcu_dereference_protected(bss_conf->chanctx_conf, |
|
lockdep_is_held(&local->chanctx_mtx)); |
|
/* |
|
* Since we hold the chanctx_mtx (checked above) |
|
* we can take the chanctx_conf pointer out of the |
|
* RCU critical section, it cannot go away without |
|
* the mutex. Just the way we reached it could - in |
|
* theory - go away, but we don't really care and |
|
* it really shouldn't happen anyway. |
|
*/ |
|
rcu_read_unlock(); |
|
|
|
if (!chanctx_conf) |
|
goto unlock; |
|
|
|
chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, |
|
conf); |
|
ieee80211_recalc_chanctx_min_def(local, chanctx); |
|
} |
|
unlock: |
|
mutex_unlock(&local->chanctx_mtx); |
|
} |
|
|
|
size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) |
|
{ |
|
size_t pos = offset; |
|
|
|
while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) |
|
pos += 2 + ies[pos + 1]; |
|
|
|
return pos; |
|
} |
|
|
|
u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
|
u16 cap) |
|
{ |
|
__le16 tmp; |
|
|
|
*pos++ = WLAN_EID_HT_CAPABILITY; |
|
*pos++ = sizeof(struct ieee80211_ht_cap); |
|
memset(pos, 0, sizeof(struct ieee80211_ht_cap)); |
|
|
|
/* capability flags */ |
|
tmp = cpu_to_le16(cap); |
|
memcpy(pos, &tmp, sizeof(u16)); |
|
pos += sizeof(u16); |
|
|
|
/* AMPDU parameters */ |
|
*pos++ = ht_cap->ampdu_factor | |
|
(ht_cap->ampdu_density << |
|
IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); |
|
|
|
/* MCS set */ |
|
memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); |
|
pos += sizeof(ht_cap->mcs); |
|
|
|
/* extended capabilities */ |
|
pos += sizeof(__le16); |
|
|
|
/* BF capabilities */ |
|
pos += sizeof(__le32); |
|
|
|
/* antenna selection */ |
|
pos += sizeof(u8); |
|
|
|
return pos; |
|
} |
|
|
|
u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
|
u32 cap) |
|
{ |
|
__le32 tmp; |
|
|
|
*pos++ = WLAN_EID_VHT_CAPABILITY; |
|
*pos++ = sizeof(struct ieee80211_vht_cap); |
|
memset(pos, 0, sizeof(struct ieee80211_vht_cap)); |
|
|
|
/* capability flags */ |
|
tmp = cpu_to_le32(cap); |
|
memcpy(pos, &tmp, sizeof(u32)); |
|
pos += sizeof(u32); |
|
|
|
/* VHT MCS set */ |
|
memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); |
|
pos += sizeof(vht_cap->vht_mcs); |
|
|
|
return pos; |
|
} |
|
|
|
u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype) |
|
{ |
|
const struct ieee80211_sta_he_cap *he_cap; |
|
struct ieee80211_supported_band *sband; |
|
u8 n; |
|
|
|
sband = ieee80211_get_sband(sdata); |
|
if (!sband) |
|
return 0; |
|
|
|
he_cap = ieee80211_get_he_iftype_cap(sband, iftype); |
|
if (!he_cap) |
|
return 0; |
|
|
|
n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem); |
|
return 2 + 1 + |
|
sizeof(he_cap->he_cap_elem) + n + |
|
ieee80211_he_ppe_size(he_cap->ppe_thres[0], |
|
he_cap->he_cap_elem.phy_cap_info); |
|
} |
|
|
|
u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos, |
|
const struct ieee80211_sta_he_cap *he_cap, |
|
u8 *end) |
|
{ |
|
struct ieee80211_he_cap_elem elem; |
|
u8 n; |
|
u8 ie_len; |
|
u8 *orig_pos = pos; |
|
|
|
/* Make sure we have place for the IE */ |
|
/* |
|
* TODO: the 1 added is because this temporarily is under the EXTENSION |
|
* IE. Get rid of it when it moves. |
|
*/ |
|
if (!he_cap) |
|
return orig_pos; |
|
|
|
/* modify on stack first to calculate 'n' and 'ie_len' correctly */ |
|
elem = he_cap->he_cap_elem; |
|
|
|
if (disable_flags & IEEE80211_CONN_DISABLE_40MHZ) |
|
elem.phy_cap_info[0] &= |
|
~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G | |
|
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G); |
|
|
|
if (disable_flags & IEEE80211_CONN_DISABLE_160MHZ) |
|
elem.phy_cap_info[0] &= |
|
~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; |
|
|
|
if (disable_flags & IEEE80211_CONN_DISABLE_80P80MHZ) |
|
elem.phy_cap_info[0] &= |
|
~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; |
|
|
|
n = ieee80211_he_mcs_nss_size(&elem); |
|
ie_len = 2 + 1 + |
|
sizeof(he_cap->he_cap_elem) + n + |
|
ieee80211_he_ppe_size(he_cap->ppe_thres[0], |
|
he_cap->he_cap_elem.phy_cap_info); |
|
|
|
if ((end - pos) < ie_len) |
|
return orig_pos; |
|
|
|
*pos++ = WLAN_EID_EXTENSION; |
|
pos++; /* We'll set the size later below */ |
|
*pos++ = WLAN_EID_EXT_HE_CAPABILITY; |
|
|
|
/* Fixed data */ |
|
memcpy(pos, &elem, sizeof(elem)); |
|
pos += sizeof(elem); |
|
|
|
memcpy(pos, &he_cap->he_mcs_nss_supp, n); |
|
pos += n; |
|
|
|
/* Check if PPE Threshold should be present */ |
|
if ((he_cap->he_cap_elem.phy_cap_info[6] & |
|
IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0) |
|
goto end; |
|
|
|
/* |
|
* Calculate how many PPET16/PPET8 pairs are to come. Algorithm: |
|
* (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK) |
|
*/ |
|
n = hweight8(he_cap->ppe_thres[0] & |
|
IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK); |
|
n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >> |
|
IEEE80211_PPE_THRES_NSS_POS)); |
|
|
|
/* |
|
* Each pair is 6 bits, and we need to add the 7 "header" bits to the |
|
* total size. |
|
*/ |
|
n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7; |
|
n = DIV_ROUND_UP(n, 8); |
|
|
|
/* Copy PPE Thresholds */ |
|
memcpy(pos, &he_cap->ppe_thres, n); |
|
pos += n; |
|
|
|
end: |
|
orig_pos[1] = (pos - orig_pos) - 2; |
|
return pos; |
|
} |
|
|
|
void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata, |
|
enum ieee80211_smps_mode smps_mode, |
|
struct sk_buff *skb) |
|
{ |
|
struct ieee80211_supported_band *sband; |
|
const struct ieee80211_sband_iftype_data *iftd; |
|
enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif); |
|
u8 *pos; |
|
u16 cap; |
|
|
|
if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy, |
|
BIT(NL80211_BAND_6GHZ), |
|
IEEE80211_CHAN_NO_HE)) |
|
return; |
|
|
|
sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ]; |
|
|
|
iftd = ieee80211_get_sband_iftype_data(sband, iftype); |
|
if (!iftd) |
|
return; |
|
|
|
/* Check for device HE 6 GHz capability before adding element */ |
|
if (!iftd->he_6ghz_capa.capa) |
|
return; |
|
|
|
cap = le16_to_cpu(iftd->he_6ghz_capa.capa); |
|
cap &= ~IEEE80211_HE_6GHZ_CAP_SM_PS; |
|
|
|
switch (smps_mode) { |
|
case IEEE80211_SMPS_AUTOMATIC: |
|
case IEEE80211_SMPS_NUM_MODES: |
|
WARN_ON(1); |
|
fallthrough; |
|
case IEEE80211_SMPS_OFF: |
|
cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED, |
|
IEEE80211_HE_6GHZ_CAP_SM_PS); |
|
break; |
|
case IEEE80211_SMPS_STATIC: |
|
cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC, |
|
IEEE80211_HE_6GHZ_CAP_SM_PS); |
|
break; |
|
case IEEE80211_SMPS_DYNAMIC: |
|
cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC, |
|
IEEE80211_HE_6GHZ_CAP_SM_PS); |
|
break; |
|
} |
|
|
|
pos = skb_put(skb, 2 + 1 + sizeof(cap)); |
|
ieee80211_write_he_6ghz_cap(pos, cpu_to_le16(cap), |
|
pos + 2 + 1 + sizeof(cap)); |
|
} |
|
|
|
u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
|
const struct cfg80211_chan_def *chandef, |
|
u16 prot_mode, bool rifs_mode) |
|
{ |
|
struct ieee80211_ht_operation *ht_oper; |
|
/* Build HT Information */ |
|
*pos++ = WLAN_EID_HT_OPERATION; |
|
*pos++ = sizeof(struct ieee80211_ht_operation); |
|
ht_oper = (struct ieee80211_ht_operation *)pos; |
|
ht_oper->primary_chan = ieee80211_frequency_to_channel( |
|
chandef->chan->center_freq); |
|
switch (chandef->width) { |
|
case NL80211_CHAN_WIDTH_160: |
|
case NL80211_CHAN_WIDTH_80P80: |
|
case NL80211_CHAN_WIDTH_80: |
|
case NL80211_CHAN_WIDTH_40: |
|
if (chandef->center_freq1 > chandef->chan->center_freq) |
|
ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; |
|
else |
|
ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; |
|
break; |
|
case NL80211_CHAN_WIDTH_320: |
|
/* HT information element should not be included on 6GHz */ |
|
WARN_ON(1); |
|
return pos; |
|
default: |
|
ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; |
|
break; |
|
} |
|
if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && |
|
chandef->width != NL80211_CHAN_WIDTH_20_NOHT && |
|
chandef->width != NL80211_CHAN_WIDTH_20) |
|
ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; |
|
|
|
if (rifs_mode) |
|
ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE; |
|
|
|
ht_oper->operation_mode = cpu_to_le16(prot_mode); |
|
ht_oper->stbc_param = 0x0000; |
|
|
|
/* It seems that Basic MCS set and Supported MCS set |
|
are identical for the first 10 bytes */ |
|
memset(&ht_oper->basic_set, 0, 16); |
|
memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); |
|
|
|
return pos + sizeof(struct ieee80211_ht_operation); |
|
} |
|
|
|
void ieee80211_ie_build_wide_bw_cs(u8 *pos, |
|
const struct cfg80211_chan_def *chandef) |
|
{ |
|
*pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */ |
|
*pos++ = 3; /* IE length */ |
|
/* New channel width */ |
|
switch (chandef->width) { |
|
case NL80211_CHAN_WIDTH_80: |
|
*pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ; |
|
break; |
|
case NL80211_CHAN_WIDTH_160: |
|
*pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ; |
|
break; |
|
case NL80211_CHAN_WIDTH_80P80: |
|
*pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ; |
|
break; |
|
case NL80211_CHAN_WIDTH_320: |
|
/* The behavior is not defined for 320 MHz channels */ |
|
WARN_ON(1); |
|
fallthrough; |
|
default: |
|
*pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT; |
|
} |
|
|
|
/* new center frequency segment 0 */ |
|
*pos++ = ieee80211_frequency_to_channel(chandef->center_freq1); |
|
/* new center frequency segment 1 */ |
|
if (chandef->center_freq2) |
|
*pos++ = ieee80211_frequency_to_channel(chandef->center_freq2); |
|
else |
|
*pos++ = 0; |
|
} |
|
|
|
u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, |
|
const struct cfg80211_chan_def *chandef) |
|
{ |
|
struct ieee80211_vht_operation *vht_oper; |
|
|
|
*pos++ = WLAN_EID_VHT_OPERATION; |
|
*pos++ = sizeof(struct ieee80211_vht_operation); |
|
vht_oper = (struct ieee80211_vht_operation *)pos; |
|
vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel( |
|
chandef->center_freq1); |
|
if (chandef->center_freq2) |
|
vht_oper->center_freq_seg1_idx = |
|
ieee80211_frequency_to_channel(chandef->center_freq2); |
|
else |
|
vht_oper->center_freq_seg1_idx = 0x00; |
|
|
|
switch (chandef->width) { |
|
case NL80211_CHAN_WIDTH_160: |
|
/* |
|
* Convert 160 MHz channel width to new style as interop |
|
* workaround. |
|
*/ |
|
vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; |
|
vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx; |
|
if (chandef->chan->center_freq < chandef->center_freq1) |
|
vht_oper->center_freq_seg0_idx -= 8; |
|
else |
|
vht_oper->center_freq_seg0_idx += 8; |
|
break; |
|
case NL80211_CHAN_WIDTH_80P80: |
|
/* |
|
* Convert 80+80 MHz channel width to new style as interop |
|
* workaround. |
|
*/ |
|
vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; |
|
break; |
|
case NL80211_CHAN_WIDTH_80: |
|
vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; |
|
break; |
|
case NL80211_CHAN_WIDTH_320: |
|
/* VHT information element should not be included on 6GHz */ |
|
WARN_ON(1); |
|
return pos; |
|
default: |
|
vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT; |
|
break; |
|
} |
|
|
|
/* don't require special VHT peer rates */ |
|
vht_oper->basic_mcs_set = cpu_to_le16(0xffff); |
|
|
|
return pos + sizeof(struct ieee80211_vht_operation); |
|
} |
|
|
|
u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef) |
|
{ |
|
struct ieee80211_he_operation *he_oper; |
|
struct ieee80211_he_6ghz_oper *he_6ghz_op; |
|
u32 he_oper_params; |
|
u8 ie_len = 1 + sizeof(struct ieee80211_he_operation); |
|
|
|
if (chandef->chan->band == NL80211_BAND_6GHZ) |
|
ie_len += sizeof(struct ieee80211_he_6ghz_oper); |
|
|
|
*pos++ = WLAN_EID_EXTENSION; |
|
*pos++ = ie_len; |
|
*pos++ = WLAN_EID_EXT_HE_OPERATION; |
|
|
|
he_oper_params = 0; |
|
he_oper_params |= u32_encode_bits(1023, /* disabled */ |
|
IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK); |
|
he_oper_params |= u32_encode_bits(1, |
|
IEEE80211_HE_OPERATION_ER_SU_DISABLE); |
|
he_oper_params |= u32_encode_bits(1, |
|
IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED); |
|
if (chandef->chan->band == NL80211_BAND_6GHZ) |
|
he_oper_params |= u32_encode_bits(1, |
|
IEEE80211_HE_OPERATION_6GHZ_OP_INFO); |
|
|
|
he_oper = (struct ieee80211_he_operation *)pos; |
|
he_oper->he_oper_params = cpu_to_le32(he_oper_params); |
|
|
|
/* don't require special HE peer rates */ |
|
he_oper->he_mcs_nss_set = cpu_to_le16(0xffff); |
|
pos += sizeof(struct ieee80211_he_operation); |
|
|
|
if (chandef->chan->band != NL80211_BAND_6GHZ) |
|
goto out; |
|
|
|
/* TODO add VHT operational */ |
|
he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos; |
|
he_6ghz_op->minrate = 6; /* 6 Mbps */ |
|
he_6ghz_op->primary = |
|
ieee80211_frequency_to_channel(chandef->chan->center_freq); |
|
he_6ghz_op->ccfs0 = |
|
ieee80211_frequency_to_channel(chandef->center_freq1); |
|
if (chandef->center_freq2) |
|
he_6ghz_op->ccfs1 = |
|
ieee80211_frequency_to_channel(chandef->center_freq2); |
|
else |
|
he_6ghz_op->ccfs1 = 0; |
|
|
|
switch (chandef->width) { |
|
case NL80211_CHAN_WIDTH_320: |
|
/* |
|
* TODO: mesh operation is not defined over 6GHz 320 MHz |
|
* channels. |
|
*/ |
|
WARN_ON(1); |
|
break; |
|
case NL80211_CHAN_WIDTH_160: |
|
/* Convert 160 MHz channel width to new style as interop |
|
* workaround. |
|
*/ |
|
he_6ghz_op->control = |
|
IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ; |
|
he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0; |
|
if (chandef->chan->center_freq < chandef->center_freq1) |
|
he_6ghz_op->ccfs0 -= 8; |
|
else |
|
he_6ghz_op->ccfs0 += 8; |
|
fallthrough; |
|
case NL80211_CHAN_WIDTH_80P80: |
|
he_6ghz_op->control = |
|
IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ; |
|
break; |
|
case NL80211_CHAN_WIDTH_80: |
|
he_6ghz_op->control = |
|
IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ; |
|
break; |
|
case NL80211_CHAN_WIDTH_40: |
|
he_6ghz_op->control = |
|
IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ; |
|
break; |
|
default: |
|
he_6ghz_op->control = |
|
IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ; |
|
break; |
|
} |
|
|
|
pos += sizeof(struct ieee80211_he_6ghz_oper); |
|
|
|
out: |
|
return pos; |
|
} |
|
|
|
bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, |
|
struct cfg80211_chan_def *chandef) |
|
{ |
|
enum nl80211_channel_type channel_type; |
|
|
|
if (!ht_oper) |
|
return false; |
|
|
|
switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
|
case IEEE80211_HT_PARAM_CHA_SEC_NONE: |
|
channel_type = NL80211_CHAN_HT20; |
|
break; |
|
case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
|
channel_type = NL80211_CHAN_HT40PLUS; |
|
break; |
|
case IEEE80211_HT_PARAM_CHA_SEC_BELOW: |
|
channel_type = NL80211_CHAN_HT40MINUS; |
|
break; |
|
default: |
|
return false; |
|
} |
|
|
|
cfg80211_chandef_create(chandef, chandef->chan, channel_type); |
|
return true; |
|
} |
|
|
|
bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, |
|
const struct ieee80211_vht_operation *oper, |
|
const struct ieee80211_ht_operation *htop, |
|
struct cfg80211_chan_def *chandef) |
|
{ |
|
struct cfg80211_chan_def new = *chandef; |
|
int cf0, cf1; |
|
int ccfs0, ccfs1, ccfs2; |
|
int ccf0, ccf1; |
|
u32 vht_cap; |
|
bool support_80_80 = false; |
|
bool support_160 = false; |
|
u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info, |
|
IEEE80211_VHT_CAP_EXT_NSS_BW_MASK); |
|
u8 supp_chwidth = u32_get_bits(vht_cap_info, |
|
IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK); |
|
|
|
if (!oper || !htop) |
|
return false; |
|
|
|
vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap; |
|
support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK | |
|
IEEE80211_VHT_CAP_EXT_NSS_BW_MASK)); |
|
support_80_80 = ((vht_cap & |
|
IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) || |
|
(vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ && |
|
vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) || |
|
((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >> |
|
IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1)); |
|
ccfs0 = oper->center_freq_seg0_idx; |
|
ccfs1 = oper->center_freq_seg1_idx; |
|
ccfs2 = (le16_to_cpu(htop->operation_mode) & |
|
IEEE80211_HT_OP_MODE_CCFS2_MASK) |
|
>> IEEE80211_HT_OP_MODE_CCFS2_SHIFT; |
|
|
|
ccf0 = ccfs0; |
|
|
|
/* if not supported, parse as though we didn't understand it */ |
|
if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW)) |
|
ext_nss_bw_supp = 0; |
|
|
|
/* |
|
* Cf. IEEE 802.11 Table 9-250 |
|
* |
|
* We really just consider that because it's inefficient to connect |
|
* at a higher bandwidth than we'll actually be able to use. |
|
*/ |
|
switch ((supp_chwidth << 4) | ext_nss_bw_supp) { |
|
default: |
|
case 0x00: |
|
ccf1 = 0; |
|
support_160 = false; |
|
support_80_80 = false; |
|
break; |
|
case 0x01: |
|
support_80_80 = false; |
|
fallthrough; |
|
case 0x02: |
|
case 0x03: |
|
ccf1 = ccfs2; |
|
break; |
|
case 0x10: |
|
ccf1 = ccfs1; |
|
break; |
|
case 0x11: |
|
case 0x12: |
|
if (!ccfs1) |
|
ccf1 = ccfs2; |
|
else |
|
ccf1 = ccfs1; |
|
break; |
|
case 0x13: |
|
case 0x20: |
|
case 0x23: |
|
ccf1 = ccfs1; |
|
break; |
|
} |
|
|
|
cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band); |
|
cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band); |
|
|
|
switch (oper->chan_width) { |
|
case IEEE80211_VHT_CHANWIDTH_USE_HT: |
|
/* just use HT information directly */ |
|
break; |
|
case IEEE80211_VHT_CHANWIDTH_80MHZ: |
|
new.width = NL80211_CHAN_WIDTH_80; |
|
new.center_freq1 = cf0; |
|
/* If needed, adjust based on the newer interop workaround. */ |
|
if (ccf1) { |
|
unsigned int diff; |
|
|
|
diff = abs(ccf1 - ccf0); |
|
if ((diff == 8) && support_160) { |
|
new.width = NL80211_CHAN_WIDTH_160; |
|
new.center_freq1 = cf1; |
|
} else if ((diff > 8) && support_80_80) { |
|
new.width = NL80211_CHAN_WIDTH_80P80; |
|
new.center_freq2 = cf1; |
|
} |
|
} |
|
break; |
|
case IEEE80211_VHT_CHANWIDTH_160MHZ: |
|
/* deprecated encoding */ |
|
new.width = NL80211_CHAN_WIDTH_160; |
|
new.center_freq1 = cf0; |
|
break; |
|
case IEEE80211_VHT_CHANWIDTH_80P80MHZ: |
|
/* deprecated encoding */ |
|
new.width = NL80211_CHAN_WIDTH_80P80; |
|
new.center_freq1 = cf0; |
|
new.center_freq2 = cf1; |
|
break; |
|
default: |
|
return false; |
|
} |
|
|
|
if (!cfg80211_chandef_valid(&new)) |
|
return false; |
|
|
|
*chandef = new; |
|
return true; |
|
} |
|
|
|
void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation *eht_oper, |
|
bool support_160, bool support_320, |
|
struct cfg80211_chan_def *chandef) |
|
{ |
|
struct ieee80211_eht_operation_info *info = (void *)eht_oper->optional; |
|
|
|
chandef->center_freq1 = |
|
ieee80211_channel_to_frequency(info->ccfs0, |
|
chandef->chan->band); |
|
|
|
switch (u8_get_bits(info->control, |
|
IEEE80211_EHT_OPER_CHAN_WIDTH)) { |
|
case IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ: |
|
chandef->width = NL80211_CHAN_WIDTH_20; |
|
break; |
|
case IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ: |
|
chandef->width = NL80211_CHAN_WIDTH_40; |
|
break; |
|
case IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ: |
|
chandef->width = NL80211_CHAN_WIDTH_80; |
|
break; |
|
case IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ: |
|
if (support_160) { |
|
chandef->width = NL80211_CHAN_WIDTH_160; |
|
chandef->center_freq1 = |
|
ieee80211_channel_to_frequency(info->ccfs1, |
|
chandef->chan->band); |
|
} else { |
|
chandef->width = NL80211_CHAN_WIDTH_80; |
|
} |
|
break; |
|
case IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ: |
|
if (support_320) { |
|
chandef->width = NL80211_CHAN_WIDTH_320; |
|
chandef->center_freq1 = |
|
ieee80211_channel_to_frequency(info->ccfs1, |
|
chandef->chan->band); |
|
} else if (support_160) { |
|
chandef->width = NL80211_CHAN_WIDTH_160; |
|
} else { |
|
chandef->width = NL80211_CHAN_WIDTH_80; |
|
|
|
if (chandef->center_freq1 > chandef->chan->center_freq) |
|
chandef->center_freq1 -= 40; |
|
else |
|
chandef->center_freq1 += 40; |
|
} |
|
break; |
|
} |
|
} |
|
|
|
bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata, |
|
const struct ieee80211_he_operation *he_oper, |
|
const struct ieee80211_eht_operation *eht_oper, |
|
struct cfg80211_chan_def *chandef) |
|
{ |
|
struct ieee80211_local *local = sdata->local; |
|
struct ieee80211_supported_band *sband; |
|
enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif); |
|
const struct ieee80211_sta_he_cap *he_cap; |
|
const struct ieee80211_sta_eht_cap *eht_cap; |
|
struct cfg80211_chan_def he_chandef = *chandef; |
|
const struct ieee80211_he_6ghz_oper *he_6ghz_oper; |
|
struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
|
bool support_80_80, support_160, support_320; |
|
u8 he_phy_cap, eht_phy_cap; |
|
u32 freq; |
|
|
|
if (chandef->chan->band != NL80211_BAND_6GHZ) |
|
return true; |
|
|
|
sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ]; |
|
|
|
he_cap = ieee80211_get_he_iftype_cap(sband, iftype); |
|
if (!he_cap) { |
|
sdata_info(sdata, "Missing iftype sband data/HE cap"); |
|
return false; |
|
} |
|
|
|
he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0]; |
|
support_160 = |
|
he_phy_cap & |
|
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; |
|
support_80_80 = |
|
he_phy_cap & |
|
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; |
|
|
|
if (!he_oper) { |
|
sdata_info(sdata, |
|
"HE is not advertised on (on %d MHz), expect issues\n", |
|
chandef->chan->center_freq); |
|
return false; |
|
} |
|
|
|
eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype); |
|
if (!eht_cap) { |
|
sdata_info(sdata, "Missing iftype sband data/EHT cap"); |
|
eht_oper = NULL; |
|
} |
|
|
|
he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper); |
|
|
|
if (!he_6ghz_oper) { |
|
sdata_info(sdata, |
|
"HE 6GHz operation missing (on %d MHz), expect issues\n", |
|
chandef->chan->center_freq); |
|
return false; |
|
} |
|
|
|
/* |
|
* The EHT operation IE does not contain the primary channel so the |
|
* primary channel frequency should be taken from the 6 GHz operation |
|
* information. |
|
*/ |
|
freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary, |
|
NL80211_BAND_6GHZ); |
|
he_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq); |
|
|
|
switch (u8_get_bits(he_6ghz_oper->control, |
|
IEEE80211_HE_6GHZ_OPER_CTRL_REG_INFO)) { |
|
case IEEE80211_6GHZ_CTRL_REG_LPI_AP: |
|
bss_conf->power_type = IEEE80211_REG_LPI_AP; |
|
break; |
|
case IEEE80211_6GHZ_CTRL_REG_SP_AP: |
|
bss_conf->power_type = IEEE80211_REG_SP_AP; |
|
break; |
|
default: |
|
bss_conf->power_type = IEEE80211_REG_UNSET_AP; |
|
break; |
|
} |
|
|
|
if (!eht_oper || |
|
!(eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT)) { |
|
switch (u8_get_bits(he_6ghz_oper->control, |
|
IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) { |
|
case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ: |
|
he_chandef.width = NL80211_CHAN_WIDTH_20; |
|
break; |
|
case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ: |
|
he_chandef.width = NL80211_CHAN_WIDTH_40; |
|
break; |
|
case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ: |
|
he_chandef.width = NL80211_CHAN_WIDTH_80; |
|
break; |
|
case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ: |
|
he_chandef.width = NL80211_CHAN_WIDTH_80; |
|
if (!he_6ghz_oper->ccfs1) |
|
break; |
|
if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) { |
|
if (support_160) |
|
he_chandef.width = NL80211_CHAN_WIDTH_160; |
|
} else { |
|
if (support_80_80) |
|
he_chandef.width = NL80211_CHAN_WIDTH_80P80; |
|
} |
|
break; |
|
} |
|
|
|
if (he_chandef.width == NL80211_CHAN_WIDTH_160) { |
|
he_chandef.center_freq1 = |
|
ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1, |
|
NL80211_BAND_6GHZ); |
|
} else { |
|
he_chandef.center_freq1 = |
|
ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0, |
|
NL80211_BAND_6GHZ); |
|
if (support_80_80 || support_160) |
|
he_chandef.center_freq2 = |
|
ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1, |
|
NL80211_BAND_6GHZ); |
|
} |
|
} else { |
|
eht_phy_cap = eht_cap->eht_cap_elem.phy_cap_info[0]; |
|
support_320 = |
|
eht_phy_cap & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ; |
|
|
|
ieee80211_chandef_eht_oper(eht_oper, support_160, |
|
support_320, &he_chandef); |
|
} |
|
|
|
if (!cfg80211_chandef_valid(&he_chandef)) { |
|
sdata_info(sdata, |
|
"HE 6GHz operation resulted in invalid chandef: %d MHz/%d/%d MHz/%d MHz\n", |
|
he_chandef.chan ? he_chandef.chan->center_freq : 0, |
|
he_chandef.width, |
|
he_chandef.center_freq1, |
|
he_chandef.center_freq2); |
|
return false; |
|
} |
|
|
|
*chandef = he_chandef; |
|
|
|
return true; |
|
} |
|
|
|
bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper, |
|
struct cfg80211_chan_def *chandef) |
|
{ |
|
u32 oper_freq; |
|
|
|
if (!oper) |
|
return false; |
|
|
|
switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) { |
|
case IEEE80211_S1G_CHANWIDTH_1MHZ: |
|
chandef->width = NL80211_CHAN_WIDTH_1; |
|
break; |
|
case IEEE80211_S1G_CHANWIDTH_2MHZ: |
|
chandef->width = NL80211_CHAN_WIDTH_2; |
|
break; |
|
case IEEE80211_S1G_CHANWIDTH_4MHZ: |
|
chandef->width = NL80211_CHAN_WIDTH_4; |
|
break; |
|
case IEEE80211_S1G_CHANWIDTH_8MHZ: |
|
chandef->width = NL80211_CHAN_WIDTH_8; |
|
break; |
|
case IEEE80211_S1G_CHANWIDTH_16MHZ: |
|
chandef->width = NL80211_CHAN_WIDTH_16; |
|
break; |
|
default: |
|
return false; |
|
} |
|
|
|
oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch, |
|
NL80211_BAND_S1GHZ); |
|
chandef->center_freq1 = KHZ_TO_MHZ(oper_freq); |
|
chandef->freq1_offset = oper_freq % 1000; |
|
|
|
return true; |
|
} |
|
|
|
int ieee80211_parse_bitrates(enum nl80211_chan_width width, |
|
const struct ieee80211_supported_band *sband, |
|
const u8 *srates, int srates_len, u32 *rates) |
|
{ |
|
u32 rate_flags = ieee80211_chanwidth_rate_flags(width); |
|
int shift = ieee80211_chanwidth_get_shift(width); |
|
struct ieee80211_rate *br; |
|
int brate, rate, i, j, count = 0; |
|
|
|
*rates = 0; |
|
|
|
for (i = 0; i < srates_len; i++) { |
|
rate = srates[i] & 0x7f; |
|
|
|
for (j = 0; j < sband->n_bitrates; j++) { |
|
br = &sband->bitrates[j]; |
|
if ((rate_flags & br->flags) != rate_flags) |
|
continue; |
|
|
|
brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); |
|
if (brate == rate) { |
|
*rates |= BIT(j); |
|
count++; |
|
break; |
|
} |
|
} |
|
} |
|
return count; |
|
} |
|
|
|
int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, |
|
struct sk_buff *skb, bool need_basic, |
|
enum nl80211_band band) |
|
{ |
|
struct ieee80211_local *local = sdata->local; |
|
struct ieee80211_supported_band *sband; |
|
int rate, shift; |
|
u8 i, rates, *pos; |
|
u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
|
u32 rate_flags; |
|
|
|
shift = ieee80211_vif_get_shift(&sdata->vif); |
|
rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); |
|
sband = local->hw.wiphy->bands[band]; |
|
rates = 0; |
|
for (i = 0; i < sband->n_bitrates; i++) { |
|
if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
|
continue; |
|
rates++; |
|
} |
|
if (rates > 8) |
|
rates = 8; |
|
|
|
if (skb_tailroom(skb) < rates + 2) |
|
return -ENOMEM; |
|
|
|
pos = skb_put(skb, rates + 2); |
|
*pos++ = WLAN_EID_SUPP_RATES; |
|
*pos++ = rates; |
|
for (i = 0; i < rates; i++) { |
|
u8 basic = 0; |
|
if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
|
continue; |
|
|
|
if (need_basic && basic_rates & BIT(i)) |
|
basic = 0x80; |
|
rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
|
5 * (1 << shift)); |
|
*pos++ = basic | (u8) rate; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, |
|
struct sk_buff *skb, bool need_basic, |
|
enum nl80211_band band) |
|
{ |
|
struct ieee80211_local *local = sdata->local; |
|
struct ieee80211_supported_band *sband; |
|
int rate, shift; |
|
u8 i, exrates, *pos; |
|
u32 basic_rates = sdata->vif.bss_conf.basic_rates; |
|
u32 rate_flags; |
|
|
|
rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); |
|
shift = ieee80211_vif_get_shift(&sdata->vif); |
|
|
|
sband = local->hw.wiphy->bands[band]; |
|
exrates = 0; |
|
for (i = 0; i < sband->n_bitrates; i++) { |
|
if ((rate_flags & sband->bitrates[i].flags) != rate_flags) |
|
continue; |
|
exrates++; |
|
} |
|
|
|
if (exrates > 8) |
|
exrates -= 8; |
|
else |
|
exrates = 0; |
|
|
|
if (skb_tailroom(skb) < exrates + 2) |
|
return -ENOMEM; |
|
|
|
if (exrates) { |
|
pos = skb_put(skb, exrates + 2); |
|
*pos++ = WLAN_EID_EXT_SUPP_RATES; |
|
*pos++ = exrates; |
|
for (i = 8; i < sband->n_bitrates; i++) { |
|
u8 basic = 0; |
|
if ((rate_flags & sband->bitrates[i].flags) |
|
!= rate_flags) |
|
continue; |
|
if (need_basic && basic_rates & BIT(i)) |
|
basic = 0x80; |
|
rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
|
5 * (1 << shift)); |
|
*pos++ = basic | (u8) rate; |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
int ieee80211_ave_rssi(struct ieee80211_vif *vif) |
|
{ |
|
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
|
|
|
if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) |
|
return 0; |
|
|
|
return -ewma_beacon_signal_read(&sdata->deflink.u.mgd.ave_beacon_signal); |
|
} |
|
EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); |
|
|
|
u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) |
|
{ |
|
if (!mcs) |
|
return 1; |
|
|
|
/* TODO: consider rx_highest */ |
|
|
|
if (mcs->rx_mask[3]) |
|
return 4; |
|
if (mcs->rx_mask[2]) |
|
return 3; |
|
if (mcs->rx_mask[1]) |
|
return 2; |
|
return 1; |
|
} |
|
|
|
/** |
|
* ieee80211_calculate_rx_timestamp - calculate timestamp in frame |
|
* @local: mac80211 hw info struct |
|
* @status: RX status |
|
* @mpdu_len: total MPDU length (including FCS) |
|
* @mpdu_offset: offset into MPDU to calculate timestamp at |
|
* |
|
* This function calculates the RX timestamp at the given MPDU offset, taking |
|
* into account what the RX timestamp was. An offset of 0 will just normalize |
|
* the timestamp to TSF at beginning of MPDU reception. |
|
*/ |
|
u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, |
|
struct ieee80211_rx_status *status, |
|
unsigned int mpdu_len, |
|
unsigned int mpdu_offset) |
|
{ |
|
u64 ts = status->mactime; |
|
struct rate_info ri; |
|
u16 rate; |
|
u8 n_ltf; |
|
|
|
if (WARN_ON(!ieee80211_have_rx_timestamp(status))) |
|
return 0; |
|
|
|
memset(&ri, 0, sizeof(ri)); |
|
|
|
ri.bw = status->bw; |
|
|
|
/* Fill cfg80211 rate info */ |
|
switch (status->encoding) { |
|
case RX_ENC_HE: |
|
ri.flags |= RATE_INFO_FLAGS_HE_MCS; |
|
ri.mcs = status->rate_idx; |
|
ri.nss = status->nss; |
|
ri.he_ru_alloc = status->he_ru; |
|
if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) |
|
ri.flags |= RATE_INFO_FLAGS_SHORT_GI; |
|
|
|
/* |
|
* See P802.11ax_D6.0, section 27.3.4 for |
|
* VHT PPDU format. |
|
*/ |
|
if (status->flag & RX_FLAG_MACTIME_PLCP_START) { |
|
mpdu_offset += 2; |
|
ts += 36; |
|
|
|
/* |
|
* TODO: |
|
* For HE MU PPDU, add the HE-SIG-B. |
|
* For HE ER PPDU, add 8us for the HE-SIG-A. |
|
* For HE TB PPDU, add 4us for the HE-STF. |
|
* Add the HE-LTF durations - variable. |
|
*/ |
|
} |
|
|
|
break; |
|
case RX_ENC_HT: |
|
ri.mcs = status->rate_idx; |
|
ri.flags |= RATE_INFO_FLAGS_MCS; |
|
if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) |
|
ri.flags |= RATE_INFO_FLAGS_SHORT_GI; |
|
|
|
/* |
|
* See P802.11REVmd_D3.0, section 19.3.2 for |
|
* HT PPDU format. |
|
*/ |
|
if (status->flag & RX_FLAG_MACTIME_PLCP_START) { |
|
mpdu_offset += 2; |
|
if (status->enc_flags & RX_ENC_FLAG_HT_GF) |
|
ts += 24; |
|
else |
|
ts += 32; |
|
|
|
/* |
|
* Add Data HT-LTFs per streams |
|
* TODO: add Extension HT-LTFs, 4us per LTF |
|
*/ |
|
n_ltf = ((ri.mcs >> 3) & 3) + 1; |
|
n_ltf = n_ltf == 3 ? 4 : n_ltf; |
|
ts += n_ltf * 4; |
|
} |
|
|
|
break; |
|
case RX_ENC_VHT: |
|
ri.flags |= RATE_INFO_FLAGS_VHT_MCS; |
|
ri.mcs = status->rate_idx; |
|
ri.nss = status->nss; |
|
if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) |
|
ri.flags |= RATE_INFO_FLAGS_SHORT_GI; |
|
|
|
/* |
|
* See P802.11REVmd_D3.0, section 21.3.2 for |
|
* VHT PPDU format. |
|
*/ |
|
if (status->flag & RX_FLAG_MACTIME_PLCP_START) { |
|
mpdu_offset += 2; |
|
ts += 36; |
|
|
|
/* |
|
* Add VHT-LTFs per streams |
|
*/ |
|
n_ltf = (ri.nss != 1) && (ri.nss % 2) ? |
|
ri.nss + 1 : ri.nss; |
|
ts += 4 * n_ltf; |
|
} |
|
|
|
break; |
|
default: |
|
WARN_ON(1); |
|
fallthrough; |
|
case RX_ENC_LEGACY: { |
|
struct ieee80211_supported_band *sband; |
|
int shift = 0; |
|
int bitrate; |
|
|
|
switch (status->bw) { |
|
case RATE_INFO_BW_10: |
|
shift = 1; |
|
break; |
|
case RATE_INFO_BW_5: |
|
shift = 2; |
|
break; |
|
} |
|
|
|
sband = local->hw.wiphy->bands[status->band]; |
|
bitrate = sband->bitrates[status->rate_idx].bitrate; |
|
ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift)); |
|
|
|
if (status->flag & RX_FLAG_MACTIME_PLCP_START) { |
|
if (status->band == NL80211_BAND_5GHZ) { |
|
ts += 20 << shift; |
|
mpdu_offset += 2; |
|
} else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) { |
|
ts += 96; |
|
} else { |
|
ts += 192; |
|
} |
|
} |
|
break; |
|
} |
|
} |
|
|
|
rate = cfg80211_calculate_bitrate(&ri); |
|
if (WARN_ONCE(!rate, |
|
"Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n", |
|
(unsigned long long)status->flag, status->rate_idx, |
|
status->nss)) |
|
return 0; |
|
|
|
/* rewind from end of MPDU */ |
|
if (status->flag & RX_FLAG_MACTIME_END) |
|
ts -= mpdu_len * 8 * 10 / rate; |
|
|
|
ts += mpdu_offset * 8 * 10 / rate; |
|
|
|
return ts; |
|
} |
|
|
|
void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) |
|
{ |
|
struct ieee80211_sub_if_data *sdata; |
|
struct cfg80211_chan_def chandef; |
|
|
|
/* for interface list, to avoid linking iflist_mtx and chanctx_mtx */ |
|
lockdep_assert_wiphy(local->hw.wiphy); |
|
|
|
mutex_lock(&local->mtx); |
|
list_for_each_entry(sdata, &local->interfaces, list) { |
|
/* it might be waiting for the local->mtx, but then |
|
* by the time it gets it, sdata->wdev.cac_started |
|
* will no longer be true |
|
*/ |
|
cancel_delayed_work(&sdata->deflink.dfs_cac_timer_work); |
|
|
|
if (sdata->wdev.cac_started) { |
|
chandef = sdata->vif.bss_conf.chandef; |
|
ieee80211_link_release_channel(&sdata->deflink); |
|
cfg80211_cac_event(sdata->dev, |
|
&chandef, |
|
NL80211_RADAR_CAC_ABORTED, |
|
GFP_KERNEL); |
|
} |
|
} |
|
mutex_unlock(&local->mtx); |
|
} |
|
|
|
void ieee80211_dfs_radar_detected_work(struct work_struct *work) |
|
{ |
|
struct ieee80211_local *local = |
|
container_of(work, struct ieee80211_local, radar_detected_work); |
|
struct cfg80211_chan_def chandef = local->hw.conf.chandef; |
|
struct ieee80211_chanctx *ctx; |
|
int num_chanctx = 0; |
|
|
|
mutex_lock(&local->chanctx_mtx); |
|
list_for_each_entry(ctx, &local->chanctx_list, list) { |
|
if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) |
|
continue; |
|
|
|
num_chanctx++; |
|
chandef = ctx->conf.def; |
|
} |
|
mutex_unlock(&local->chanctx_mtx); |
|
|
|
wiphy_lock(local->hw.wiphy); |
|
ieee80211_dfs_cac_cancel(local); |
|
wiphy_unlock(local->hw.wiphy); |
|
|
|
if (num_chanctx > 1) |
|
/* XXX: multi-channel is not supported yet */ |
|
WARN_ON(1); |
|
else |
|
cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); |
|
} |
|
|
|
void ieee80211_radar_detected(struct ieee80211_hw *hw) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
|
|
trace_api_radar_detected(local); |
|
|
|
schedule_work(&local->radar_detected_work); |
|
} |
|
EXPORT_SYMBOL(ieee80211_radar_detected); |
|
|
|
ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c) |
|
{ |
|
ieee80211_conn_flags_t ret; |
|
int tmp; |
|
|
|
switch (c->width) { |
|
case NL80211_CHAN_WIDTH_20: |
|
c->width = NL80211_CHAN_WIDTH_20_NOHT; |
|
ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT; |
|
break; |
|
case NL80211_CHAN_WIDTH_40: |
|
c->width = NL80211_CHAN_WIDTH_20; |
|
c->center_freq1 = c->chan->center_freq; |
|
ret = IEEE80211_CONN_DISABLE_40MHZ | |
|
IEEE80211_CONN_DISABLE_VHT; |
|
break; |
|
case NL80211_CHAN_WIDTH_80: |
|
tmp = (30 + c->chan->center_freq - c->center_freq1)/20; |
|
/* n_P40 */ |
|
tmp /= 2; |
|
/* freq_P40 */ |
|
c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; |
|
c->width = NL80211_CHAN_WIDTH_40; |
|
ret = IEEE80211_CONN_DISABLE_VHT; |
|
break; |
|
case NL80211_CHAN_WIDTH_80P80: |
|
c->center_freq2 = 0; |
|
c->width = NL80211_CHAN_WIDTH_80; |
|
ret = IEEE80211_CONN_DISABLE_80P80MHZ | |
|
IEEE80211_CONN_DISABLE_160MHZ; |
|
break; |
|
case NL80211_CHAN_WIDTH_160: |
|
/* n_P20 */ |
|
tmp = (70 + c->chan->center_freq - c->center_freq1)/20; |
|
/* n_P80 */ |
|
tmp /= 4; |
|
c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; |
|
c->width = NL80211_CHAN_WIDTH_80; |
|
ret = IEEE80211_CONN_DISABLE_80P80MHZ | |
|
IEEE80211_CONN_DISABLE_160MHZ; |
|
break; |
|
case NL80211_CHAN_WIDTH_320: |
|
/* n_P20 */ |
|
tmp = (150 + c->chan->center_freq - c->center_freq1) / 20; |
|
/* n_P160 */ |
|
tmp /= 8; |
|
c->center_freq1 = c->center_freq1 - 80 + 160 * tmp; |
|
c->width = NL80211_CHAN_WIDTH_160; |
|
ret = IEEE80211_CONN_DISABLE_320MHZ; |
|
break; |
|
default: |
|
case NL80211_CHAN_WIDTH_20_NOHT: |
|
WARN_ON_ONCE(1); |
|
c->width = NL80211_CHAN_WIDTH_20_NOHT; |
|
ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT; |
|
break; |
|
case NL80211_CHAN_WIDTH_1: |
|
case NL80211_CHAN_WIDTH_2: |
|
case NL80211_CHAN_WIDTH_4: |
|
case NL80211_CHAN_WIDTH_8: |
|
case NL80211_CHAN_WIDTH_16: |
|
case NL80211_CHAN_WIDTH_5: |
|
case NL80211_CHAN_WIDTH_10: |
|
WARN_ON_ONCE(1); |
|
/* keep c->width */ |
|
ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT; |
|
break; |
|
} |
|
|
|
WARN_ON_ONCE(!cfg80211_chandef_valid(c)); |
|
|
|
return ret; |
|
} |
|
|
|
/* |
|
* Returns true if smps_mode_new is strictly more restrictive than |
|
* smps_mode_old. |
|
*/ |
|
bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, |
|
enum ieee80211_smps_mode smps_mode_new) |
|
{ |
|
if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || |
|
smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) |
|
return false; |
|
|
|
switch (smps_mode_old) { |
|
case IEEE80211_SMPS_STATIC: |
|
return false; |
|
case IEEE80211_SMPS_DYNAMIC: |
|
return smps_mode_new == IEEE80211_SMPS_STATIC; |
|
case IEEE80211_SMPS_OFF: |
|
return smps_mode_new != IEEE80211_SMPS_OFF; |
|
default: |
|
WARN_ON(1); |
|
} |
|
|
|
return false; |
|
} |
|
|
|
int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, |
|
struct cfg80211_csa_settings *csa_settings) |
|
{ |
|
struct sk_buff *skb; |
|
struct ieee80211_mgmt *mgmt; |
|
struct ieee80211_local *local = sdata->local; |
|
int freq; |
|
int hdr_len = offsetofend(struct ieee80211_mgmt, |
|
u.action.u.chan_switch); |
|
u8 *pos; |
|
|
|
if (sdata->vif.type != NL80211_IFTYPE_ADHOC && |
|
sdata->vif.type != NL80211_IFTYPE_MESH_POINT) |
|
return -EOPNOTSUPP; |
|
|
|
skb = dev_alloc_skb(local->tx_headroom + hdr_len + |
|
5 + /* channel switch announcement element */ |
|
3 + /* secondary channel offset element */ |
|
5 + /* wide bandwidth channel switch announcement */ |
|
8); /* mesh channel switch parameters element */ |
|
if (!skb) |
|
return -ENOMEM; |
|
|
|
skb_reserve(skb, local->tx_headroom); |
|
mgmt = skb_put_zero(skb, hdr_len); |
|
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
|
IEEE80211_STYPE_ACTION); |
|
|
|
eth_broadcast_addr(mgmt->da); |
|
memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
|
if (ieee80211_vif_is_mesh(&sdata->vif)) { |
|
memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); |
|
} else { |
|
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; |
|
memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); |
|
} |
|
mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; |
|
mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; |
|
pos = skb_put(skb, 5); |
|
*pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ |
|
*pos++ = 3; /* IE length */ |
|
*pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ |
|
freq = csa_settings->chandef.chan->center_freq; |
|
*pos++ = ieee80211_frequency_to_channel(freq); /* channel */ |
|
*pos++ = csa_settings->count; /* count */ |
|
|
|
if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { |
|
enum nl80211_channel_type ch_type; |
|
|
|
skb_put(skb, 3); |
|
*pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ |
|
*pos++ = 1; /* IE length */ |
|
ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); |
|
if (ch_type == NL80211_CHAN_HT40PLUS) |
|
*pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; |
|
else |
|
*pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; |
|
} |
|
|
|
if (ieee80211_vif_is_mesh(&sdata->vif)) { |
|
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; |
|
|
|
skb_put(skb, 8); |
|
*pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ |
|
*pos++ = 6; /* IE length */ |
|
*pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ |
|
*pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ |
|
*pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; |
|
*pos++ |= csa_settings->block_tx ? |
|
WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; |
|
put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ |
|
pos += 2; |
|
put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ |
|
pos += 2; |
|
} |
|
|
|
if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 || |
|
csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 || |
|
csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) { |
|
skb_put(skb, 5); |
|
ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef); |
|
} |
|
|
|
ieee80211_tx_skb(sdata, skb); |
|
return 0; |
|
} |
|
|
|
static bool |
|
ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) |
|
{ |
|
s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); |
|
int skip; |
|
|
|
if (end > 0) |
|
return false; |
|
|
|
/* One shot NOA */ |
|
if (data->count[i] == 1) |
|
return false; |
|
|
|
if (data->desc[i].interval == 0) |
|
return false; |
|
|
|
/* End time is in the past, check for repetitions */ |
|
skip = DIV_ROUND_UP(-end, data->desc[i].interval); |
|
if (data->count[i] < 255) { |
|
if (data->count[i] <= skip) { |
|
data->count[i] = 0; |
|
return false; |
|
} |
|
|
|
data->count[i] -= skip; |
|
} |
|
|
|
data->desc[i].start += skip * data->desc[i].interval; |
|
|
|
return true; |
|
} |
|
|
|
static bool |
|
ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, |
|
s32 *offset) |
|
{ |
|
bool ret = false; |
|
int i; |
|
|
|
for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { |
|
s32 cur; |
|
|
|
if (!data->count[i]) |
|
continue; |
|
|
|
if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) |
|
ret = true; |
|
|
|
cur = data->desc[i].start - tsf; |
|
if (cur > *offset) |
|
continue; |
|
|
|
cur = data->desc[i].start + data->desc[i].duration - tsf; |
|
if (cur > *offset) |
|
*offset = cur; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static u32 |
|
ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) |
|
{ |
|
s32 offset = 0; |
|
int tries = 0; |
|
/* |
|
* arbitrary limit, used to avoid infinite loops when combined NoA |
|
* descriptors cover the full time period. |
|
*/ |
|
int max_tries = 5; |
|
|
|
ieee80211_extend_absent_time(data, tsf, &offset); |
|
do { |
|
if (!ieee80211_extend_absent_time(data, tsf, &offset)) |
|
break; |
|
|
|
tries++; |
|
} while (tries < max_tries); |
|
|
|
return offset; |
|
} |
|
|
|
void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) |
|
{ |
|
u32 next_offset = BIT(31) - 1; |
|
int i; |
|
|
|
data->absent = 0; |
|
data->has_next_tsf = false; |
|
for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { |
|
s32 start; |
|
|
|
if (!data->count[i]) |
|
continue; |
|
|
|
ieee80211_extend_noa_desc(data, tsf, i); |
|
start = data->desc[i].start - tsf; |
|
if (start <= 0) |
|
data->absent |= BIT(i); |
|
|
|
if (next_offset > start) |
|
next_offset = start; |
|
|
|
data->has_next_tsf = true; |
|
} |
|
|
|
if (data->absent) |
|
next_offset = ieee80211_get_noa_absent_time(data, tsf); |
|
|
|
data->next_tsf = tsf + next_offset; |
|
} |
|
EXPORT_SYMBOL(ieee80211_update_p2p_noa); |
|
|
|
int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, |
|
struct ieee80211_noa_data *data, u32 tsf) |
|
{ |
|
int ret = 0; |
|
int i; |
|
|
|
memset(data, 0, sizeof(*data)); |
|
|
|
for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { |
|
const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; |
|
|
|
if (!desc->count || !desc->duration) |
|
continue; |
|
|
|
data->count[i] = desc->count; |
|
data->desc[i].start = le32_to_cpu(desc->start_time); |
|
data->desc[i].duration = le32_to_cpu(desc->duration); |
|
data->desc[i].interval = le32_to_cpu(desc->interval); |
|
|
|
if (data->count[i] > 1 && |
|
data->desc[i].interval < data->desc[i].duration) |
|
continue; |
|
|
|
ieee80211_extend_noa_desc(data, tsf, i); |
|
ret++; |
|
} |
|
|
|
if (ret) |
|
ieee80211_update_p2p_noa(data, tsf); |
|
|
|
return ret; |
|
} |
|
EXPORT_SYMBOL(ieee80211_parse_p2p_noa); |
|
|
|
void ieee80211_recalc_dtim(struct ieee80211_local *local, |
|
struct ieee80211_sub_if_data *sdata) |
|
{ |
|
u64 tsf = drv_get_tsf(local, sdata); |
|
u64 dtim_count = 0; |
|
u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; |
|
u8 dtim_period = sdata->vif.bss_conf.dtim_period; |
|
struct ps_data *ps; |
|
u8 bcns_from_dtim; |
|
|
|
if (tsf == -1ULL || !beacon_int || !dtim_period) |
|
return; |
|
|
|
if (sdata->vif.type == NL80211_IFTYPE_AP || |
|
sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
|
if (!sdata->bss) |
|
return; |
|
|
|
ps = &sdata->bss->ps; |
|
} else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
|
ps = &sdata->u.mesh.ps; |
|
} else { |
|
return; |
|
} |
|
|
|
/* |
|
* actually finds last dtim_count, mac80211 will update in |
|
* __beacon_add_tim(). |
|
* dtim_count = dtim_period - (tsf / bcn_int) % dtim_period |
|
*/ |
|
do_div(tsf, beacon_int); |
|
bcns_from_dtim = do_div(tsf, dtim_period); |
|
/* just had a DTIM */ |
|
if (!bcns_from_dtim) |
|
dtim_count = 0; |
|
else |
|
dtim_count = dtim_period - bcns_from_dtim; |
|
|
|
ps->dtim_count = dtim_count; |
|
} |
|
|
|
static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local, |
|
struct ieee80211_chanctx *ctx) |
|
{ |
|
struct ieee80211_link_data *link; |
|
u8 radar_detect = 0; |
|
|
|
lockdep_assert_held(&local->chanctx_mtx); |
|
|
|
if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)) |
|
return 0; |
|
|
|
list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list) |
|
if (link->reserved_radar_required) |
|
radar_detect |= BIT(link->reserved_chandef.width); |
|
|
|
/* |
|
* An in-place reservation context should not have any assigned vifs |
|
* until it replaces the other context. |
|
*/ |
|
WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER && |
|
!list_empty(&ctx->assigned_links)); |
|
|
|
list_for_each_entry(link, &ctx->assigned_links, assigned_chanctx_list) { |
|
if (!link->radar_required) |
|
continue; |
|
|
|
radar_detect |= |
|
BIT(link->conf->chandef.width); |
|
} |
|
|
|
return radar_detect; |
|
} |
|
|
|
int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, |
|
const struct cfg80211_chan_def *chandef, |
|
enum ieee80211_chanctx_mode chanmode, |
|
u8 radar_detect) |
|
{ |
|
struct ieee80211_local *local = sdata->local; |
|
struct ieee80211_sub_if_data *sdata_iter; |
|
enum nl80211_iftype iftype = sdata->wdev.iftype; |
|
struct ieee80211_chanctx *ctx; |
|
int total = 1; |
|
struct iface_combination_params params = { |
|
.radar_detect = radar_detect, |
|
}; |
|
|
|
lockdep_assert_held(&local->chanctx_mtx); |
|
|
|
if (WARN_ON(hweight32(radar_detect) > 1)) |
|
return -EINVAL; |
|
|
|
if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED && |
|
!chandef->chan)) |
|
return -EINVAL; |
|
|
|
if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) |
|
return -EINVAL; |
|
|
|
if (sdata->vif.type == NL80211_IFTYPE_AP || |
|
sdata->vif.type == NL80211_IFTYPE_MESH_POINT) { |
|
/* |
|
* always passing this is harmless, since it'll be the |
|
* same value that cfg80211 finds if it finds the same |
|
* interface ... and that's always allowed |
|
*/ |
|
params.new_beacon_int = sdata->vif.bss_conf.beacon_int; |
|
} |
|
|
|
/* Always allow software iftypes */ |
|
if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) { |
|
if (radar_detect) |
|
return -EINVAL; |
|
return 0; |
|
} |
|
|
|
if (chandef) |
|
params.num_different_channels = 1; |
|
|
|
if (iftype != NL80211_IFTYPE_UNSPECIFIED) |
|
params.iftype_num[iftype] = 1; |
|
|
|
list_for_each_entry(ctx, &local->chanctx_list, list) { |
|
if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) |
|
continue; |
|
params.radar_detect |= |
|
ieee80211_chanctx_radar_detect(local, ctx); |
|
if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) { |
|
params.num_different_channels++; |
|
continue; |
|
} |
|
if (chandef && chanmode == IEEE80211_CHANCTX_SHARED && |
|
cfg80211_chandef_compatible(chandef, |
|
&ctx->conf.def)) |
|
continue; |
|
params.num_different_channels++; |
|
} |
|
|
|
list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) { |
|
struct wireless_dev *wdev_iter; |
|
|
|
wdev_iter = &sdata_iter->wdev; |
|
|
|
if (sdata_iter == sdata || |
|
!ieee80211_sdata_running(sdata_iter) || |
|
cfg80211_iftype_allowed(local->hw.wiphy, |
|
wdev_iter->iftype, 0, 1)) |
|
continue; |
|
|
|
params.iftype_num[wdev_iter->iftype]++; |
|
total++; |
|
} |
|
|
|
if (total == 1 && !params.radar_detect) |
|
return 0; |
|
|
|
return cfg80211_check_combinations(local->hw.wiphy, ¶ms); |
|
} |
|
|
|
static void |
|
ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, |
|
void *data) |
|
{ |
|
u32 *max_num_different_channels = data; |
|
|
|
*max_num_different_channels = max(*max_num_different_channels, |
|
c->num_different_channels); |
|
} |
|
|
|
int ieee80211_max_num_channels(struct ieee80211_local *local) |
|
{ |
|
struct ieee80211_sub_if_data *sdata; |
|
struct ieee80211_chanctx *ctx; |
|
u32 max_num_different_channels = 1; |
|
int err; |
|
struct iface_combination_params params = {0}; |
|
|
|
lockdep_assert_held(&local->chanctx_mtx); |
|
|
|
list_for_each_entry(ctx, &local->chanctx_list, list) { |
|
if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) |
|
continue; |
|
|
|
params.num_different_channels++; |
|
|
|
params.radar_detect |= |
|
ieee80211_chanctx_radar_detect(local, ctx); |
|
} |
|
|
|
list_for_each_entry_rcu(sdata, &local->interfaces, list) |
|
params.iftype_num[sdata->wdev.iftype]++; |
|
|
|
err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms, |
|
ieee80211_iter_max_chans, |
|
&max_num_different_channels); |
|
if (err < 0) |
|
return err; |
|
|
|
return max_num_different_channels; |
|
} |
|
|
|
void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, |
|
struct ieee80211_sta_s1g_cap *caps, |
|
struct sk_buff *skb) |
|
{ |
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
|
struct ieee80211_s1g_cap s1g_capab; |
|
u8 *pos; |
|
int i; |
|
|
|
if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) |
|
return; |
|
|
|
if (!caps->s1g) |
|
return; |
|
|
|
memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap)); |
|
memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs)); |
|
|
|
/* override the capability info */ |
|
for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) { |
|
u8 mask = ifmgd->s1g_capa_mask.capab_info[i]; |
|
|
|
s1g_capab.capab_info[i] &= ~mask; |
|
s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask; |
|
} |
|
|
|
/* then MCS and NSS set */ |
|
for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) { |
|
u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i]; |
|
|
|
s1g_capab.supp_mcs_nss[i] &= ~mask; |
|
s1g_capab.supp_mcs_nss[i] |= |
|
ifmgd->s1g_capa.supp_mcs_nss[i] & mask; |
|
} |
|
|
|
pos = skb_put(skb, 2 + sizeof(s1g_capab)); |
|
*pos++ = WLAN_EID_S1G_CAPABILITIES; |
|
*pos++ = sizeof(s1g_capab); |
|
|
|
memcpy(pos, &s1g_capab, sizeof(s1g_capab)); |
|
} |
|
|
|
void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, |
|
struct sk_buff *skb) |
|
{ |
|
u8 *pos = skb_put(skb, 3); |
|
|
|
*pos++ = WLAN_EID_AID_REQUEST; |
|
*pos++ = 1; |
|
*pos++ = 0; |
|
} |
|
|
|
u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo) |
|
{ |
|
*buf++ = WLAN_EID_VENDOR_SPECIFIC; |
|
*buf++ = 7; /* len */ |
|
*buf++ = 0x00; /* Microsoft OUI 00:50:F2 */ |
|
*buf++ = 0x50; |
|
*buf++ = 0xf2; |
|
*buf++ = 2; /* WME */ |
|
*buf++ = 0; /* WME info */ |
|
*buf++ = 1; /* WME ver */ |
|
*buf++ = qosinfo; /* U-APSD no in use */ |
|
|
|
return buf; |
|
} |
|
|
|
void ieee80211_txq_get_depth(struct ieee80211_txq *txq, |
|
unsigned long *frame_cnt, |
|
unsigned long *byte_cnt) |
|
{ |
|
struct txq_info *txqi = to_txq_info(txq); |
|
u32 frag_cnt = 0, frag_bytes = 0; |
|
struct sk_buff *skb; |
|
|
|
skb_queue_walk(&txqi->frags, skb) { |
|
frag_cnt++; |
|
frag_bytes += skb->len; |
|
} |
|
|
|
if (frame_cnt) |
|
*frame_cnt = txqi->tin.backlog_packets + frag_cnt; |
|
|
|
if (byte_cnt) |
|
*byte_cnt = txqi->tin.backlog_bytes + frag_bytes; |
|
} |
|
EXPORT_SYMBOL(ieee80211_txq_get_depth); |
|
|
|
const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = { |
|
IEEE80211_WMM_IE_STA_QOSINFO_AC_VO, |
|
IEEE80211_WMM_IE_STA_QOSINFO_AC_VI, |
|
IEEE80211_WMM_IE_STA_QOSINFO_AC_BE, |
|
IEEE80211_WMM_IE_STA_QOSINFO_AC_BK |
|
}; |
|
|
|
u16 ieee80211_encode_usf(int listen_interval) |
|
{ |
|
static const int listen_int_usf[] = { 1, 10, 1000, 10000 }; |
|
u16 ui, usf = 0; |
|
|
|
/* find greatest USF */ |
|
while (usf < IEEE80211_MAX_USF) { |
|
if (listen_interval % listen_int_usf[usf + 1]) |
|
break; |
|
usf += 1; |
|
} |
|
ui = listen_interval / listen_int_usf[usf]; |
|
|
|
/* error if there is a remainder. Should've been checked by user */ |
|
WARN_ON_ONCE(ui > IEEE80211_MAX_UI); |
|
listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) | |
|
FIELD_PREP(LISTEN_INT_UI, ui); |
|
|
|
return (u16) listen_interval; |
|
} |
|
|
|
u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype) |
|
{ |
|
const struct ieee80211_sta_he_cap *he_cap; |
|
const struct ieee80211_sta_eht_cap *eht_cap; |
|
struct ieee80211_supported_band *sband; |
|
bool is_ap; |
|
u8 n; |
|
|
|
sband = ieee80211_get_sband(sdata); |
|
if (!sband) |
|
return 0; |
|
|
|
he_cap = ieee80211_get_he_iftype_cap(sband, iftype); |
|
eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype); |
|
if (!he_cap || !eht_cap) |
|
return 0; |
|
|
|
is_ap = iftype == NL80211_IFTYPE_AP || |
|
iftype == NL80211_IFTYPE_P2P_GO; |
|
|
|
n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, |
|
&eht_cap->eht_cap_elem, |
|
is_ap); |
|
return 2 + 1 + |
|
sizeof(he_cap->he_cap_elem) + n + |
|
ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], |
|
eht_cap->eht_cap_elem.phy_cap_info); |
|
return 0; |
|
} |
|
|
|
u8 *ieee80211_ie_build_eht_cap(u8 *pos, |
|
const struct ieee80211_sta_he_cap *he_cap, |
|
const struct ieee80211_sta_eht_cap *eht_cap, |
|
u8 *end, |
|
bool for_ap) |
|
{ |
|
u8 mcs_nss_len, ppet_len; |
|
u8 ie_len; |
|
u8 *orig_pos = pos; |
|
|
|
/* Make sure we have place for the IE */ |
|
if (!he_cap || !eht_cap) |
|
return orig_pos; |
|
|
|
mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, |
|
&eht_cap->eht_cap_elem, |
|
for_ap); |
|
ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], |
|
eht_cap->eht_cap_elem.phy_cap_info); |
|
|
|
ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len; |
|
if ((end - pos) < ie_len) |
|
return orig_pos; |
|
|
|
*pos++ = WLAN_EID_EXTENSION; |
|
*pos++ = ie_len - 2; |
|
*pos++ = WLAN_EID_EXT_EHT_CAPABILITY; |
|
|
|
/* Fixed data */ |
|
memcpy(pos, &eht_cap->eht_cap_elem, sizeof(eht_cap->eht_cap_elem)); |
|
pos += sizeof(eht_cap->eht_cap_elem); |
|
|
|
memcpy(pos, &eht_cap->eht_mcs_nss_supp, mcs_nss_len); |
|
pos += mcs_nss_len; |
|
|
|
if (ppet_len) { |
|
memcpy(pos, &eht_cap->eht_ppe_thres, ppet_len); |
|
pos += ppet_len; |
|
} |
|
|
|
return pos; |
|
} |
|
|
|
void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos) |
|
{ |
|
unsigned int elem_len; |
|
|
|
if (!len_pos) |
|
return; |
|
|
|
elem_len = skb->data + skb->len - len_pos - 1; |
|
|
|
while (elem_len > 255) { |
|
/* this one is 255 */ |
|
*len_pos = 255; |
|
/* remaining data gets smaller */ |
|
elem_len -= 255; |
|
/* make space for the fragment ID/len in SKB */ |
|
skb_put(skb, 2); |
|
/* shift back the remaining data to place fragment ID/len */ |
|
memmove(len_pos + 255 + 3, len_pos + 255 + 1, elem_len); |
|
/* place the fragment ID */ |
|
len_pos += 255 + 1; |
|
*len_pos = WLAN_EID_FRAGMENT; |
|
/* and point to fragment length to update later */ |
|
len_pos++; |
|
} |
|
|
|
*len_pos = elem_len; |
|
}
|
|
|