4444bc2116
When a running wake_tx_queue() call is aborted due to a hw queue stop
the corresponding iTXQ is not always correctly marked for resumption:
wake_tx_push_queue() can stops the queue run without setting
@IEEE80211_TXQ_STOP_NETIF_TX.
Without the @IEEE80211_TXQ_STOP_NETIF_TX flag __ieee80211_wake_txqs()
will not schedule a new queue run and remaining frames in the queue get
stuck till another frame is queued to it.
Fix the issue for all drivers - also the ones with custom wake_tx_queue
callbacks - by moving the logic into ieee80211_tx_dequeue() and drop the
redundant @txqs_stopped.
@IEEE80211_TXQ_STOP_NETIF_TX is also renamed to @IEEE80211_TXQ_DIRTY to
better describe the flag.
Fixes: c850e31f79
("wifi: mac80211: add internal handler for wake_tx_queue")
Signed-off-by: Alexander Wetzel <alexander@wetzel-home.de>
Link: https://lore.kernel.org/r/20221230121850.218810-1-alexander@wetzel-home.de
Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
4982 lines
129 KiB
C
4982 lines
129 KiB
C
// 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 <jbenc@suse.cz>
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* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
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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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#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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#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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/* 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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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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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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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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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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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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return hdr->addr3;
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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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return ext->u.s1g_beacon.sa;
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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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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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return NULL;
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}
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EXPORT_SYMBOL(ieee80211_get_bssid);
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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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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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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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/* 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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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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/* 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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/* 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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dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
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}
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return dur;
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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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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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dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
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short_preamble, shift);
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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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__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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sband = local->hw.wiphy->bands[frame_txctl->band];
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short_preamble = false;
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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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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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return cpu_to_le16(dur);
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}
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EXPORT_SYMBOL(ieee80211_rts_duration);
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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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sband = local->hw.wiphy->bands[frame_txctl->band];
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short_preamble = false;
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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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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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|
return cpu_to_le16(dur);
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}
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EXPORT_SYMBOL(ieee80211_ctstoself_duration);
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|
|
static void wake_tx_push_queue(struct ieee80211_local *local,
|
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struct ieee80211_sub_if_data *sdata,
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struct ieee80211_txq *queue)
|
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{
|
|
struct ieee80211_tx_control control = {
|
|
.sta = queue->sta,
|
|
};
|
|
struct sk_buff *skb;
|
|
|
|
while (1) {
|
|
skb = ieee80211_tx_dequeue(&local->hw, queue);
|
|
if (!skb)
|
|
break;
|
|
|
|
drv_tx(local, &control, skb);
|
|
}
|
|
}
|
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|
|
/* wake_tx_queue handler for driver not implementing a custom one*/
|
|
void ieee80211_handle_wake_tx_queue(struct ieee80211_hw *hw,
|
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struct ieee80211_txq *txq)
|
|
{
|
|
struct ieee80211_local *local = hw_to_local(hw);
|
|
struct ieee80211_sub_if_data *sdata = vif_to_sdata(txq->vif);
|
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struct ieee80211_txq *queue;
|
|
|
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/* Use ieee80211_next_txq() for airtime fairness accounting */
|
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ieee80211_txq_schedule_start(hw, txq->ac);
|
|
while ((queue = ieee80211_next_txq(hw, txq->ac))) {
|
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wake_tx_push_queue(local, sdata, queue);
|
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ieee80211_return_txq(hw, queue, false);
|
|
}
|
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ieee80211_txq_schedule_end(hw, txq->ac);
|
|
}
|
|
EXPORT_SYMBOL(ieee80211_handle_wake_tx_queue);
|
|
|
|
static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_vif *vif = &sdata->vif;
|
|
struct fq *fq = &local->fq;
|
|
struct ps_data *ps = NULL;
|
|
struct txq_info *txqi;
|
|
struct sta_info *sta;
|
|
int i;
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|
|
local_bh_disable();
|
|
spin_lock(&fq->lock);
|
|
|
|
if (!test_bit(SDATA_STATE_RUNNING, &sdata->state))
|
|
goto out;
|
|
|
|
if (sdata->vif.type == NL80211_IFTYPE_AP)
|
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ps = &sdata->bss->ps;
|
|
|
|
list_for_each_entry_rcu(sta, &local->sta_list, list) {
|
|
if (sdata != sta->sdata)
|
|
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];
|
|
|
|
if (!txq)
|
|
continue;
|
|
|
|
txqi = to_txq_info(txq);
|
|
|
|
if (ac != txq->ac)
|
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continue;
|
|
|
|
if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY,
|
|
&txqi->flags))
|
|
continue;
|
|
|
|
spin_unlock(&fq->lock);
|
|
drv_wake_tx_queue(local, txqi);
|
|
spin_lock(&fq->lock);
|
|
}
|
|
}
|
|
|
|
if (!vif->txq)
|
|
goto out;
|
|
|
|
txqi = to_txq_info(vif->txq);
|
|
|
|
if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) ||
|
|
(ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac)
|
|
goto out;
|
|
|
|
spin_unlock(&fq->lock);
|
|
|
|
drv_wake_tx_queue(local, txqi);
|
|
local_bh_enable();
|
|
return;
|
|
out:
|
|
spin_unlock(&fq->lock);
|
|
local_bh_enable();
|
|
}
|
|
|
|
static void
|
|
__releases(&local->queue_stop_reason_lock)
|
|
__acquires(&local->queue_stop_reason_lock)
|
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_ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata;
|
|
int n_acs = IEEE80211_NUM_ACS;
|
|
int i;
|
|
|
|
rcu_read_lock();
|
|
|
|
if (local->hw.queues < IEEE80211_NUM_ACS)
|
|
n_acs = 1;
|
|
|
|
for (i = 0; i < local->hw.queues; i++) {
|
|
if (local->queue_stop_reasons[i])
|
|
continue;
|
|
|
|
spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
|
|
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
|
|
int ac;
|
|
|
|
for (ac = 0; ac < n_acs; ac++) {
|
|
int ac_queue = sdata->vif.hw_queue[ac];
|
|
|
|
if (ac_queue == i ||
|
|
sdata->vif.cab_queue == i)
|
|
__ieee80211_wake_txqs(sdata, ac);
|
|
}
|
|
}
|
|
spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
|
|
}
|
|
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
void ieee80211_wake_txqs(struct tasklet_struct *t)
|
|
{
|
|
struct ieee80211_local *local = from_tasklet(local, t,
|
|
wake_txqs_tasklet);
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
|
|
_ieee80211_wake_txqs(local, &flags);
|
|
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
|
|
}
|
|
|
|
static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
|
|
enum queue_stop_reason reason,
|
|
bool refcounted,
|
|
unsigned long *flags)
|
|
{
|
|
struct ieee80211_local *local = hw_to_local(hw);
|
|
|
|
trace_wake_queue(local, queue, reason);
|
|
|
|
if (WARN_ON(queue >= hw->queues))
|
|
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]--;
|
|
if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
|
|
local->q_stop_reasons[queue][reason] = 0;
|
|
}
|
|
|
|
if (local->q_stop_reasons[queue][reason] == 0)
|
|
__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]))
|
|
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 (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
|
|
tasklet_schedule(&local->wake_txqs_tasklet);
|
|
else
|
|
_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);
|
|
|
|
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]++;
|
|
|
|
set_bit(reason, &local->queue_stop_reasons[queue]);
|
|
}
|
|
|
|
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;
|
|
elems->multi_link_len = len;
|
|
}
|
|
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;
|
|
}
|
|
|
|
static void ieee80211_defragment_element(struct ieee802_11_elems *elems,
|
|
void **elem_ptr, size_t *len,
|
|
size_t total_len, u8 frag_id)
|
|
{
|
|
u8 *data = *elem_ptr, *pos, *start;
|
|
const struct element *elem;
|
|
|
|
/*
|
|
* Since 'data' points to the data of the element, not the element
|
|
* itself, allow 254 in case it was an extended element where the
|
|
* extended ID isn't part of the data we see here and thus not part of
|
|
* 'len' either.
|
|
*/
|
|
if (!data || (*len != 254 && *len != 255))
|
|
return;
|
|
|
|
start = elems->scratch_pos;
|
|
|
|
if (WARN_ON(*len > (elems->scratch + elems->scratch_len -
|
|
elems->scratch_pos)))
|
|
return;
|
|
|
|
memcpy(elems->scratch_pos, data, *len);
|
|
elems->scratch_pos += *len;
|
|
|
|
pos = data + *len;
|
|
total_len -= *len;
|
|
for_each_element(elem, pos, total_len) {
|
|
if (elem->id != frag_id)
|
|
break;
|
|
|
|
if (WARN_ON(elem->datalen >
|
|
(elems->scratch + elems->scratch_len -
|
|
elems->scratch_pos)))
|
|
return;
|
|
|
|
memcpy(elems->scratch_pos, elem->data, elem->datalen);
|
|
elems->scratch_pos += elem->datalen;
|
|
|
|
*len += elem->datalen;
|
|
}
|
|
|
|
*elem_ptr = start;
|
|
}
|
|
|
|
static void ieee80211_mle_get_sta_prof(struct ieee802_11_elems *elems,
|
|
u8 link_id)
|
|
{
|
|
const struct ieee80211_multi_link_elem *ml = elems->multi_link;
|
|
size_t ml_len = elems->multi_link_len;
|
|
const struct element *sub;
|
|
|
|
if (!ml || !ml_len)
|
|
return;
|
|
|
|
if (le16_get_bits(ml->control, IEEE80211_ML_CONTROL_TYPE) !=
|
|
IEEE80211_ML_CONTROL_TYPE_BASIC)
|
|
return;
|
|
|
|
for_each_mle_subelement(sub, (u8 *)ml, ml_len) {
|
|
struct ieee80211_mle_per_sta_profile *prof = (void *)sub->data;
|
|
u16 control;
|
|
|
|
if (sub->id != IEEE80211_MLE_SUBELEM_PER_STA_PROFILE)
|
|
continue;
|
|
|
|
if (!ieee80211_mle_sta_prof_size_ok(sub->data, sub->datalen))
|
|
return;
|
|
|
|
control = le16_to_cpu(prof->control);
|
|
|
|
if (link_id != u16_get_bits(control,
|
|
IEEE80211_MLE_STA_CONTROL_LINK_ID))
|
|
continue;
|
|
|
|
if (!(control & IEEE80211_MLE_STA_CONTROL_COMPLETE_PROFILE))
|
|
return;
|
|
|
|
elems->prof = prof;
|
|
elems->sta_prof_len = sub->datalen;
|
|
|
|
/* the sub element can be fragmented */
|
|
ieee80211_defragment_element(elems, (void **)&elems->prof,
|
|
&elems->sta_prof_len,
|
|
ml_len - (sub->data - (u8 *)ml),
|
|
IEEE80211_MLE_SUBELEM_FRAGMENT);
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void ieee80211_mle_parse_link(struct ieee802_11_elems *elems,
|
|
struct ieee80211_elems_parse_params *params)
|
|
{
|
|
struct ieee80211_mle_per_sta_profile *prof;
|
|
struct ieee80211_elems_parse_params sub = {
|
|
.action = params->action,
|
|
.from_ap = params->from_ap,
|
|
.link_id = -1,
|
|
};
|
|
const struct element *non_inherit = NULL;
|
|
const u8 *end;
|
|
|
|
if (params->link_id == -1)
|
|
return;
|
|
|
|
ieee80211_defragment_element(elems, (void **)&elems->multi_link,
|
|
&elems->multi_link_len,
|
|
elems->total_len - ((u8 *)elems->multi_link -
|
|
elems->ie_start),
|
|
WLAN_EID_FRAGMENT);
|
|
|
|
ieee80211_mle_get_sta_prof(elems, params->link_id);
|
|
prof = elems->prof;
|
|
|
|
if (!prof)
|
|
return;
|
|
|
|
/* check if we have the 4 bytes for the fixed part in assoc response */
|
|
if (elems->sta_prof_len < sizeof(*prof) + prof->sta_info_len - 1 + 4) {
|
|
elems->prof = NULL;
|
|
elems->sta_prof_len = 0;
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Skip the capability information and the status code that are expected
|
|
* as part of the station profile in association response frames. Note
|
|
* the -1 is because the 'sta_info_len' is accounted to as part of the
|
|
* per-STA profile, but not part of the 'u8 variable[]' portion.
|
|
*/
|
|
sub.start = prof->variable + prof->sta_info_len - 1 + 4;
|
|
end = (const u8 *)prof + elems->sta_prof_len;
|
|
sub.len = end - sub.start;
|
|
|
|
non_inherit = cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
|
|
sub.start, sub.len);
|
|
_ieee802_11_parse_elems_full(&sub, elems, non_inherit);
|
|
}
|
|
|
|
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->scratch_len ?: 3 * 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);
|
|
}
|
|
|
|
ieee80211_mle_parse_link(elems, params);
|
|
|
|
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;
|
|
}
|