forked from mirrors/linux
98849ba2aa
We need to check that cfg80211_defragment_element()
didn't return an error, since it can fail due to bad
input, and we didn't catch that before.
Fixes: 8eb8dd2ffb ("wifi: mac80211: Support link removal using Reconfiguration ML element")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20231211085121.8595a6b67fc0.I1225edd8f98355e007f96502e358e476c7971d8c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8185 lines
236 KiB
C
8185 lines
236 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* BSS client mode implementation
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* Copyright 2003-2008, Jouni Malinen <j@w1.fi>
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* Copyright 2004, Instant802 Networks, Inc.
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* Copyright 2005, Devicescape Software, Inc.
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* Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
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* Copyright 2007, Michael Wu <flamingice@sourmilk.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 - 2023 Intel Corporation
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*/
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|
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#include <linux/delay.h>
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#include <linux/fips.h>
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#include <linux/if_ether.h>
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#include <linux/skbuff.h>
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#include <linux/if_arp.h>
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#include <linux/etherdevice.h>
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#include <linux/moduleparam.h>
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#include <linux/rtnetlink.h>
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#include <linux/crc32.h>
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#include <linux/slab.h>
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#include <linux/export.h>
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#include <net/mac80211.h>
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#include <asm/unaligned.h>
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|
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#include "ieee80211_i.h"
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#include "driver-ops.h"
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#include "rate.h"
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#include "led.h"
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#include "fils_aead.h"
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#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
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#define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2)
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#define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10)
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#define IEEE80211_AUTH_TIMEOUT_SAE (HZ * 2)
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#define IEEE80211_AUTH_MAX_TRIES 3
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#define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
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#define IEEE80211_AUTH_WAIT_SAE_RETRY (HZ * 2)
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#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
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#define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2)
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#define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10)
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#define IEEE80211_ASSOC_MAX_TRIES 3
|
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static int max_nullfunc_tries = 2;
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module_param(max_nullfunc_tries, int, 0644);
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MODULE_PARM_DESC(max_nullfunc_tries,
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"Maximum nullfunc tx tries before disconnecting (reason 4).");
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static int max_probe_tries = 5;
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module_param(max_probe_tries, int, 0644);
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MODULE_PARM_DESC(max_probe_tries,
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"Maximum probe tries before disconnecting (reason 4).");
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/*
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* Beacon loss timeout is calculated as N frames times the
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* advertised beacon interval. This may need to be somewhat
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* higher than what hardware might detect to account for
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* delays in the host processing frames. But since we also
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* probe on beacon miss before declaring the connection lost
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* default to what we want.
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*/
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static int beacon_loss_count = 7;
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module_param(beacon_loss_count, int, 0644);
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MODULE_PARM_DESC(beacon_loss_count,
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"Number of beacon intervals before we decide beacon was lost.");
|
|
|
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/*
|
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* Time the connection can be idle before we probe
|
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* it to see if we can still talk to the AP.
|
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*/
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#define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
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/*
|
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* Time we wait for a probe response after sending
|
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* a probe request because of beacon loss or for
|
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* checking the connection still works.
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*/
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static int probe_wait_ms = 500;
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module_param(probe_wait_ms, int, 0644);
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MODULE_PARM_DESC(probe_wait_ms,
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"Maximum time(ms) to wait for probe response"
|
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" before disconnecting (reason 4).");
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|
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/*
|
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* How many Beacon frames need to have been used in average signal strength
|
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* before starting to indicate signal change events.
|
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*/
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#define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
|
|
|
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/*
|
|
* Extract from the given disabled subchannel bitmap (raw format
|
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* from the EHT Operation Element) the bits for the subchannel
|
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* we're using right now.
|
|
*/
|
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static u16
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ieee80211_extract_dis_subch_bmap(const struct ieee80211_eht_operation *eht_oper,
|
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struct cfg80211_chan_def *chandef, u16 bitmap)
|
|
{
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|
struct ieee80211_eht_operation_info *info = (void *)eht_oper->optional;
|
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struct cfg80211_chan_def ap_chandef = *chandef;
|
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u32 ap_center_freq, local_center_freq;
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|
u32 ap_bw, local_bw;
|
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int ap_start_freq, local_start_freq;
|
|
u16 shift, mask;
|
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|
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if (!(eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT) ||
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!(eht_oper->params &
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IEEE80211_EHT_OPER_DISABLED_SUBCHANNEL_BITMAP_PRESENT))
|
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return 0;
|
|
|
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/* set 160/320 supported to get the full AP definition */
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ieee80211_chandef_eht_oper((const void *)eht_oper->optional,
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true, true, &ap_chandef);
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ap_center_freq = ap_chandef.center_freq1;
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ap_bw = 20 * BIT(u8_get_bits(info->control,
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IEEE80211_EHT_OPER_CHAN_WIDTH));
|
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ap_start_freq = ap_center_freq - ap_bw / 2;
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local_center_freq = chandef->center_freq1;
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local_bw = 20 * BIT(ieee80211_chan_width_to_rx_bw(chandef->width));
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local_start_freq = local_center_freq - local_bw / 2;
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shift = (local_start_freq - ap_start_freq) / 20;
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mask = BIT(local_bw / 20) - 1;
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return (bitmap >> shift) & mask;
|
|
}
|
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|
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/*
|
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* Handle the puncturing bitmap, possibly downgrading bandwidth to get a
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* valid bitmap.
|
|
*/
|
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static void
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ieee80211_handle_puncturing_bitmap(struct ieee80211_link_data *link,
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const struct ieee80211_eht_operation *eht_oper,
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u16 bitmap, u64 *changed)
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|
{
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struct cfg80211_chan_def *chandef = &link->conf->chandef;
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u16 extracted;
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u64 _changed = 0;
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if (!changed)
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changed = &_changed;
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while (chandef->width > NL80211_CHAN_WIDTH_40) {
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extracted =
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ieee80211_extract_dis_subch_bmap(eht_oper, chandef,
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bitmap);
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if (cfg80211_valid_disable_subchannel_bitmap(&bitmap,
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chandef))
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break;
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link->u.mgd.conn_flags |=
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ieee80211_chandef_downgrade(chandef);
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*changed |= BSS_CHANGED_BANDWIDTH;
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}
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if (chandef->width <= NL80211_CHAN_WIDTH_40)
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extracted = 0;
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if (link->conf->eht_puncturing != extracted) {
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link->conf->eht_puncturing = extracted;
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*changed |= BSS_CHANGED_EHT_PUNCTURING;
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}
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}
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|
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/*
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* We can have multiple work items (and connection probing)
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* scheduling this timer, but we need to take care to only
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* reschedule it when it should fire _earlier_ than it was
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* asked for before, or if it's not pending right now. This
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* function ensures that. Note that it then is required to
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* run this function for all timeouts after the first one
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* has happened -- the work that runs from this timer will
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* do that.
|
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*/
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static void run_again(struct ieee80211_sub_if_data *sdata,
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unsigned long timeout)
|
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{
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lockdep_assert_wiphy(sdata->local->hw.wiphy);
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if (!timer_pending(&sdata->u.mgd.timer) ||
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time_before(timeout, sdata->u.mgd.timer.expires))
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mod_timer(&sdata->u.mgd.timer, timeout);
|
|
}
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|
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void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
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{
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if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
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return;
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if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
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return;
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mod_timer(&sdata->u.mgd.bcn_mon_timer,
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round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
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}
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void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
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{
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struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
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if (unlikely(!ifmgd->associated))
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return;
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if (ifmgd->probe_send_count)
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ifmgd->probe_send_count = 0;
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if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
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return;
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mod_timer(&ifmgd->conn_mon_timer,
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round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
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}
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static int ecw2cw(int ecw)
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{
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return (1 << ecw) - 1;
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}
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static ieee80211_conn_flags_t
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ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_link_data *link,
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ieee80211_conn_flags_t conn_flags,
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struct ieee80211_supported_band *sband,
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struct ieee80211_channel *channel,
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u32 vht_cap_info,
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const struct ieee80211_ht_operation *ht_oper,
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const struct ieee80211_vht_operation *vht_oper,
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const struct ieee80211_he_operation *he_oper,
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const struct ieee80211_eht_operation *eht_oper,
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const struct ieee80211_s1g_oper_ie *s1g_oper,
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struct cfg80211_chan_def *chandef, bool tracking)
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{
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struct cfg80211_chan_def vht_chandef;
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struct ieee80211_sta_ht_cap sta_ht_cap;
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ieee80211_conn_flags_t ret;
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u32 ht_cfreq;
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memset(chandef, 0, sizeof(struct cfg80211_chan_def));
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chandef->chan = channel;
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chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
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chandef->center_freq1 = channel->center_freq;
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chandef->freq1_offset = channel->freq_offset;
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if (channel->band == NL80211_BAND_6GHZ) {
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if (!ieee80211_chandef_he_6ghz_oper(sdata, he_oper, eht_oper,
|
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chandef)) {
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mlme_dbg(sdata,
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"bad 6 GHz operation, disabling HT/VHT/HE/EHT\n");
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ret = IEEE80211_CONN_DISABLE_HT |
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IEEE80211_CONN_DISABLE_VHT |
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IEEE80211_CONN_DISABLE_HE |
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IEEE80211_CONN_DISABLE_EHT;
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} else {
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ret = 0;
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|
}
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vht_chandef = *chandef;
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goto out;
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|
} else if (sband->band == NL80211_BAND_S1GHZ) {
|
|
if (!ieee80211_chandef_s1g_oper(s1g_oper, chandef)) {
|
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sdata_info(sdata,
|
|
"Missing S1G Operation Element? Trying operating == primary\n");
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chandef->width = ieee80211_s1g_channel_width(channel);
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|
}
|
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|
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ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_40MHZ |
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IEEE80211_CONN_DISABLE_VHT |
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IEEE80211_CONN_DISABLE_80P80MHZ |
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IEEE80211_CONN_DISABLE_160MHZ;
|
|
goto out;
|
|
}
|
|
|
|
memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
|
|
ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
|
|
|
|
if (!ht_oper || !sta_ht_cap.ht_supported) {
|
|
mlme_dbg(sdata, "HT operation missing / HT not supported\n");
|
|
ret = IEEE80211_CONN_DISABLE_HT |
|
|
IEEE80211_CONN_DISABLE_VHT |
|
|
IEEE80211_CONN_DISABLE_HE |
|
|
IEEE80211_CONN_DISABLE_EHT;
|
|
goto out;
|
|
}
|
|
|
|
chandef->width = NL80211_CHAN_WIDTH_20;
|
|
|
|
ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
|
|
channel->band);
|
|
/* check that channel matches the right operating channel */
|
|
if (!tracking && channel->center_freq != ht_cfreq) {
|
|
/*
|
|
* It's possible that some APs are confused here;
|
|
* Netgear WNDR3700 sometimes reports 4 higher than
|
|
* the actual channel in association responses, but
|
|
* since we look at probe response/beacon data here
|
|
* it should be OK.
|
|
*/
|
|
sdata_info(sdata,
|
|
"Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
|
|
channel->center_freq, ht_cfreq,
|
|
ht_oper->primary_chan, channel->band);
|
|
ret = IEEE80211_CONN_DISABLE_HT |
|
|
IEEE80211_CONN_DISABLE_VHT |
|
|
IEEE80211_CONN_DISABLE_HE |
|
|
IEEE80211_CONN_DISABLE_EHT;
|
|
goto out;
|
|
}
|
|
|
|
/* check 40 MHz support, if we have it */
|
|
if (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
|
|
ieee80211_chandef_ht_oper(ht_oper, chandef);
|
|
} else {
|
|
mlme_dbg(sdata, "40 MHz not supported\n");
|
|
/* 40 MHz (and 80 MHz) must be supported for VHT */
|
|
ret = IEEE80211_CONN_DISABLE_VHT;
|
|
/* also mark 40 MHz disabled */
|
|
ret |= IEEE80211_CONN_DISABLE_40MHZ;
|
|
goto out;
|
|
}
|
|
|
|
if (!vht_oper || !sband->vht_cap.vht_supported) {
|
|
mlme_dbg(sdata, "VHT operation missing / VHT not supported\n");
|
|
ret = IEEE80211_CONN_DISABLE_VHT;
|
|
goto out;
|
|
}
|
|
|
|
vht_chandef = *chandef;
|
|
if (!(conn_flags & IEEE80211_CONN_DISABLE_HE) &&
|
|
he_oper &&
|
|
(le32_to_cpu(he_oper->he_oper_params) &
|
|
IEEE80211_HE_OPERATION_VHT_OPER_INFO)) {
|
|
struct ieee80211_vht_operation he_oper_vht_cap;
|
|
|
|
/*
|
|
* Set only first 3 bytes (other 2 aren't used in
|
|
* ieee80211_chandef_vht_oper() anyway)
|
|
*/
|
|
memcpy(&he_oper_vht_cap, he_oper->optional, 3);
|
|
he_oper_vht_cap.basic_mcs_set = cpu_to_le16(0);
|
|
|
|
if (!ieee80211_chandef_vht_oper(&sdata->local->hw, vht_cap_info,
|
|
&he_oper_vht_cap, ht_oper,
|
|
&vht_chandef)) {
|
|
if (!(conn_flags & IEEE80211_CONN_DISABLE_HE))
|
|
sdata_info(sdata,
|
|
"HE AP VHT information is invalid, disabling HE\n");
|
|
ret = IEEE80211_CONN_DISABLE_HE | IEEE80211_CONN_DISABLE_EHT;
|
|
goto out;
|
|
}
|
|
} else if (!ieee80211_chandef_vht_oper(&sdata->local->hw,
|
|
vht_cap_info,
|
|
vht_oper, ht_oper,
|
|
&vht_chandef)) {
|
|
if (!(conn_flags & IEEE80211_CONN_DISABLE_VHT))
|
|
sdata_info(sdata,
|
|
"AP VHT information is invalid, disabling VHT\n");
|
|
ret = IEEE80211_CONN_DISABLE_VHT;
|
|
goto out;
|
|
}
|
|
|
|
if (!cfg80211_chandef_valid(&vht_chandef)) {
|
|
if (!(conn_flags & IEEE80211_CONN_DISABLE_VHT))
|
|
sdata_info(sdata,
|
|
"AP VHT information is invalid, disabling VHT\n");
|
|
ret = IEEE80211_CONN_DISABLE_VHT;
|
|
goto out;
|
|
}
|
|
|
|
if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
|
|
ret = 0;
|
|
goto out;
|
|
}
|
|
|
|
if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
|
|
if (!(conn_flags & IEEE80211_CONN_DISABLE_VHT))
|
|
sdata_info(sdata,
|
|
"AP VHT information doesn't match HT, disabling VHT\n");
|
|
ret = IEEE80211_CONN_DISABLE_VHT;
|
|
goto out;
|
|
}
|
|
|
|
*chandef = vht_chandef;
|
|
|
|
/*
|
|
* handle the case that the EHT operation indicates that it holds EHT
|
|
* operation information (in case that the channel width differs from
|
|
* the channel width reported in HT/VHT/HE).
|
|
*/
|
|
if (eht_oper && (eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT)) {
|
|
struct cfg80211_chan_def eht_chandef = *chandef;
|
|
|
|
ieee80211_chandef_eht_oper((const void *)eht_oper->optional,
|
|
eht_chandef.width ==
|
|
NL80211_CHAN_WIDTH_160,
|
|
false, &eht_chandef);
|
|
|
|
if (!cfg80211_chandef_valid(&eht_chandef)) {
|
|
if (!(conn_flags & IEEE80211_CONN_DISABLE_EHT))
|
|
sdata_info(sdata,
|
|
"AP EHT information is invalid, disabling EHT\n");
|
|
ret = IEEE80211_CONN_DISABLE_EHT;
|
|
goto out;
|
|
}
|
|
|
|
if (!cfg80211_chandef_compatible(chandef, &eht_chandef)) {
|
|
if (!(conn_flags & IEEE80211_CONN_DISABLE_EHT))
|
|
sdata_info(sdata,
|
|
"AP EHT information is incompatible, disabling EHT\n");
|
|
ret = IEEE80211_CONN_DISABLE_EHT;
|
|
goto out;
|
|
}
|
|
|
|
*chandef = eht_chandef;
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
out:
|
|
/*
|
|
* When tracking the current AP, don't do any further checks if the
|
|
* new chandef is identical to the one we're currently using for the
|
|
* connection. This keeps us from playing ping-pong with regulatory,
|
|
* without it the following can happen (for example):
|
|
* - connect to an AP with 80 MHz, world regdom allows 80 MHz
|
|
* - AP advertises regdom US
|
|
* - CRDA loads regdom US with 80 MHz prohibited (old database)
|
|
* - the code below detects an unsupported channel, downgrades, and
|
|
* we disconnect from the AP in the caller
|
|
* - disconnect causes CRDA to reload world regdomain and the game
|
|
* starts anew.
|
|
* (see https://bugzilla.kernel.org/show_bug.cgi?id=70881)
|
|
*
|
|
* It seems possible that there are still scenarios with CSA or real
|
|
* bandwidth changes where a this could happen, but those cases are
|
|
* less common and wouldn't completely prevent using the AP.
|
|
*/
|
|
if (tracking &&
|
|
cfg80211_chandef_identical(chandef, &link->conf->chandef))
|
|
return ret;
|
|
|
|
/* don't print the message below for VHT mismatch if VHT is disabled */
|
|
if (ret & IEEE80211_CONN_DISABLE_VHT)
|
|
vht_chandef = *chandef;
|
|
|
|
/*
|
|
* Ignore the DISABLED flag when we're already connected and only
|
|
* tracking the APs beacon for bandwidth changes - otherwise we
|
|
* might get disconnected here if we connect to an AP, update our
|
|
* regulatory information based on the AP's country IE and the
|
|
* information we have is wrong/outdated and disables the channel
|
|
* that we're actually using for the connection to the AP.
|
|
*/
|
|
while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
|
|
tracking ? 0 :
|
|
IEEE80211_CHAN_DISABLED)) {
|
|
if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
|
|
ret = IEEE80211_CONN_DISABLE_HT |
|
|
IEEE80211_CONN_DISABLE_VHT |
|
|
IEEE80211_CONN_DISABLE_HE |
|
|
IEEE80211_CONN_DISABLE_EHT;
|
|
break;
|
|
}
|
|
|
|
ret |= ieee80211_chandef_downgrade(chandef);
|
|
}
|
|
|
|
if (!he_oper || !cfg80211_chandef_usable(sdata->wdev.wiphy, chandef,
|
|
IEEE80211_CHAN_NO_HE))
|
|
ret |= IEEE80211_CONN_DISABLE_HE | IEEE80211_CONN_DISABLE_EHT;
|
|
|
|
if (!eht_oper || !cfg80211_chandef_usable(sdata->wdev.wiphy, chandef,
|
|
IEEE80211_CHAN_NO_EHT))
|
|
ret |= IEEE80211_CONN_DISABLE_EHT;
|
|
|
|
if (chandef->width != vht_chandef.width && !tracking)
|
|
sdata_info(sdata,
|
|
"capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
|
|
|
|
WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
|
|
return ret;
|
|
}
|
|
|
|
static int ieee80211_config_bw(struct ieee80211_link_data *link,
|
|
const struct ieee80211_ht_cap *ht_cap,
|
|
const struct ieee80211_vht_cap *vht_cap,
|
|
const struct ieee80211_ht_operation *ht_oper,
|
|
const struct ieee80211_vht_operation *vht_oper,
|
|
const struct ieee80211_he_operation *he_oper,
|
|
const struct ieee80211_eht_operation *eht_oper,
|
|
const struct ieee80211_s1g_oper_ie *s1g_oper,
|
|
const u8 *bssid, u64 *changed)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = link->sdata;
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct ieee80211_channel *chan = link->conf->chandef.chan;
|
|
struct ieee80211_supported_band *sband =
|
|
local->hw.wiphy->bands[chan->band];
|
|
struct cfg80211_chan_def chandef;
|
|
u16 ht_opmode;
|
|
ieee80211_conn_flags_t flags;
|
|
u32 vht_cap_info = 0;
|
|
int ret;
|
|
|
|
/* if HT was/is disabled, don't track any bandwidth changes */
|
|
if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HT || !ht_oper)
|
|
return 0;
|
|
|
|
/* don't check VHT if we associated as non-VHT station */
|
|
if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_VHT)
|
|
vht_oper = NULL;
|
|
|
|
/* don't check HE if we associated as non-HE station */
|
|
if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HE ||
|
|
!ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif)) {
|
|
he_oper = NULL;
|
|
eht_oper = NULL;
|
|
}
|
|
|
|
/* don't check EHT if we associated as non-EHT station */
|
|
if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_EHT ||
|
|
!ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif))
|
|
eht_oper = NULL;
|
|
|
|
/*
|
|
* if bss configuration changed store the new one -
|
|
* this may be applicable even if channel is identical
|
|
*/
|
|
ht_opmode = le16_to_cpu(ht_oper->operation_mode);
|
|
if (link->conf->ht_operation_mode != ht_opmode) {
|
|
*changed |= BSS_CHANGED_HT;
|
|
link->conf->ht_operation_mode = ht_opmode;
|
|
}
|
|
|
|
if (vht_cap)
|
|
vht_cap_info = le32_to_cpu(vht_cap->vht_cap_info);
|
|
|
|
/* calculate new channel (type) based on HT/VHT/HE operation IEs */
|
|
flags = ieee80211_determine_chantype(sdata, link,
|
|
link->u.mgd.conn_flags,
|
|
sband, chan, vht_cap_info,
|
|
ht_oper, vht_oper,
|
|
he_oper, eht_oper,
|
|
s1g_oper, &chandef, true);
|
|
|
|
/*
|
|
* Downgrade the new channel if we associated with restricted
|
|
* capabilities. For example, if we associated as a 20 MHz STA
|
|
* to a 40 MHz AP (due to regulatory, capabilities or config
|
|
* reasons) then switching to a 40 MHz channel now won't do us
|
|
* any good -- we couldn't use it with the AP.
|
|
*/
|
|
if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_80P80MHZ &&
|
|
chandef.width == NL80211_CHAN_WIDTH_80P80)
|
|
flags |= ieee80211_chandef_downgrade(&chandef);
|
|
if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_160MHZ &&
|
|
chandef.width == NL80211_CHAN_WIDTH_160)
|
|
flags |= ieee80211_chandef_downgrade(&chandef);
|
|
if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_40MHZ &&
|
|
chandef.width > NL80211_CHAN_WIDTH_20)
|
|
flags |= ieee80211_chandef_downgrade(&chandef);
|
|
|
|
if (cfg80211_chandef_identical(&chandef, &link->conf->chandef))
|
|
return 0;
|
|
|
|
link_info(link,
|
|
"AP %pM changed bandwidth, new config is %d.%03d MHz, width %d (%d.%03d/%d MHz)\n",
|
|
link->u.mgd.bssid, chandef.chan->center_freq,
|
|
chandef.chan->freq_offset, chandef.width,
|
|
chandef.center_freq1, chandef.freq1_offset,
|
|
chandef.center_freq2);
|
|
|
|
if (flags != (link->u.mgd.conn_flags &
|
|
(IEEE80211_CONN_DISABLE_HT |
|
|
IEEE80211_CONN_DISABLE_VHT |
|
|
IEEE80211_CONN_DISABLE_HE |
|
|
IEEE80211_CONN_DISABLE_EHT |
|
|
IEEE80211_CONN_DISABLE_40MHZ |
|
|
IEEE80211_CONN_DISABLE_80P80MHZ |
|
|
IEEE80211_CONN_DISABLE_160MHZ |
|
|
IEEE80211_CONN_DISABLE_320MHZ)) ||
|
|
!cfg80211_chandef_valid(&chandef)) {
|
|
sdata_info(sdata,
|
|
"AP %pM changed caps/bw in a way we can't support (0x%x/0x%x) - disconnect\n",
|
|
link->u.mgd.bssid, flags, ifmgd->flags);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = ieee80211_link_change_bandwidth(link, &chandef, changed);
|
|
|
|
if (ret) {
|
|
sdata_info(sdata,
|
|
"AP %pM changed bandwidth to incompatible one - disconnect\n",
|
|
link->u.mgd.bssid);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* frame sending functions */
|
|
|
|
static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
|
|
struct sk_buff *skb, u8 ap_ht_param,
|
|
struct ieee80211_supported_band *sband,
|
|
struct ieee80211_channel *channel,
|
|
enum ieee80211_smps_mode smps,
|
|
ieee80211_conn_flags_t conn_flags)
|
|
{
|
|
u8 *pos;
|
|
u32 flags = channel->flags;
|
|
u16 cap;
|
|
struct ieee80211_sta_ht_cap ht_cap;
|
|
|
|
BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
|
|
|
|
memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
|
|
ieee80211_apply_htcap_overrides(sdata, &ht_cap);
|
|
|
|
/* determine capability flags */
|
|
cap = ht_cap.cap;
|
|
|
|
switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
|
|
case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
|
|
if (flags & IEEE80211_CHAN_NO_HT40PLUS) {
|
|
cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
|
|
cap &= ~IEEE80211_HT_CAP_SGI_40;
|
|
}
|
|
break;
|
|
case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
|
|
if (flags & IEEE80211_CHAN_NO_HT40MINUS) {
|
|
cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
|
|
cap &= ~IEEE80211_HT_CAP_SGI_40;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* If 40 MHz was disabled associate as though we weren't
|
|
* capable of 40 MHz -- some broken APs will never fall
|
|
* back to trying to transmit in 20 MHz.
|
|
*/
|
|
if (conn_flags & IEEE80211_CONN_DISABLE_40MHZ) {
|
|
cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
|
|
cap &= ~IEEE80211_HT_CAP_SGI_40;
|
|
}
|
|
|
|
/* set SM PS mode properly */
|
|
cap &= ~IEEE80211_HT_CAP_SM_PS;
|
|
switch (smps) {
|
|
case IEEE80211_SMPS_AUTOMATIC:
|
|
case IEEE80211_SMPS_NUM_MODES:
|
|
WARN_ON(1);
|
|
fallthrough;
|
|
case IEEE80211_SMPS_OFF:
|
|
cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
|
|
IEEE80211_HT_CAP_SM_PS_SHIFT;
|
|
break;
|
|
case IEEE80211_SMPS_STATIC:
|
|
cap |= WLAN_HT_CAP_SM_PS_STATIC <<
|
|
IEEE80211_HT_CAP_SM_PS_SHIFT;
|
|
break;
|
|
case IEEE80211_SMPS_DYNAMIC:
|
|
cap |= WLAN_HT_CAP_SM_PS_DYNAMIC <<
|
|
IEEE80211_HT_CAP_SM_PS_SHIFT;
|
|
break;
|
|
}
|
|
|
|
/* reserve and fill IE */
|
|
pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
|
|
ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
|
|
}
|
|
|
|
/* This function determines vht capability flags for the association
|
|
* and builds the IE.
|
|
* Note - the function returns true to own the MU-MIMO capability
|
|
*/
|
|
static bool ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
|
|
struct sk_buff *skb,
|
|
struct ieee80211_supported_band *sband,
|
|
struct ieee80211_vht_cap *ap_vht_cap,
|
|
ieee80211_conn_flags_t conn_flags)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
u8 *pos;
|
|
u32 cap;
|
|
struct ieee80211_sta_vht_cap vht_cap;
|
|
u32 mask, ap_bf_sts, our_bf_sts;
|
|
bool mu_mimo_owner = false;
|
|
|
|
BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
|
|
|
|
memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
|
|
ieee80211_apply_vhtcap_overrides(sdata, &vht_cap);
|
|
|
|
/* determine capability flags */
|
|
cap = vht_cap.cap;
|
|
|
|
if (conn_flags & IEEE80211_CONN_DISABLE_80P80MHZ) {
|
|
u32 bw = cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
|
|
|
|
cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
|
|
if (bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ ||
|
|
bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
|
|
cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
|
|
}
|
|
|
|
if (conn_flags & IEEE80211_CONN_DISABLE_160MHZ) {
|
|
cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160;
|
|
cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
|
|
}
|
|
|
|
/*
|
|
* Some APs apparently get confused if our capabilities are better
|
|
* than theirs, so restrict what we advertise in the assoc request.
|
|
*/
|
|
if (!(ap_vht_cap->vht_cap_info &
|
|
cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)))
|
|
cap &= ~(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
|
|
IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE);
|
|
else if (!(ap_vht_cap->vht_cap_info &
|
|
cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)))
|
|
cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
|
|
|
|
/*
|
|
* If some other vif is using the MU-MIMO capability we cannot associate
|
|
* using MU-MIMO - this will lead to contradictions in the group-id
|
|
* mechanism.
|
|
* Ownership is defined since association request, in order to avoid
|
|
* simultaneous associations with MU-MIMO.
|
|
*/
|
|
if (cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) {
|
|
bool disable_mu_mimo = false;
|
|
struct ieee80211_sub_if_data *other;
|
|
|
|
list_for_each_entry_rcu(other, &local->interfaces, list) {
|
|
if (other->vif.bss_conf.mu_mimo_owner) {
|
|
disable_mu_mimo = true;
|
|
break;
|
|
}
|
|
}
|
|
if (disable_mu_mimo)
|
|
cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
|
|
else
|
|
mu_mimo_owner = true;
|
|
}
|
|
|
|
mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;
|
|
|
|
ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask;
|
|
our_bf_sts = cap & mask;
|
|
|
|
if (ap_bf_sts < our_bf_sts) {
|
|
cap &= ~mask;
|
|
cap |= ap_bf_sts;
|
|
}
|
|
|
|
/* reserve and fill IE */
|
|
pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
|
|
ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
|
|
|
|
return mu_mimo_owner;
|
|
}
|
|
|
|
/* This function determines HE capability flags for the association
|
|
* and builds the IE.
|
|
*/
|
|
static void ieee80211_add_he_ie(struct ieee80211_sub_if_data *sdata,
|
|
struct sk_buff *skb,
|
|
struct ieee80211_supported_band *sband,
|
|
enum ieee80211_smps_mode smps_mode,
|
|
ieee80211_conn_flags_t conn_flags)
|
|
{
|
|
u8 *pos, *pre_he_pos;
|
|
const struct ieee80211_sta_he_cap *he_cap;
|
|
u8 he_cap_size;
|
|
|
|
he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
|
|
if (WARN_ON(!he_cap))
|
|
return;
|
|
|
|
/* get a max size estimate */
|
|
he_cap_size =
|
|
2 + 1 + sizeof(he_cap->he_cap_elem) +
|
|
ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem) +
|
|
ieee80211_he_ppe_size(he_cap->ppe_thres[0],
|
|
he_cap->he_cap_elem.phy_cap_info);
|
|
pos = skb_put(skb, he_cap_size);
|
|
pre_he_pos = pos;
|
|
pos = ieee80211_ie_build_he_cap(conn_flags,
|
|
pos, he_cap, pos + he_cap_size);
|
|
/* trim excess if any */
|
|
skb_trim(skb, skb->len - (pre_he_pos + he_cap_size - pos));
|
|
|
|
ieee80211_ie_build_he_6ghz_cap(sdata, smps_mode, skb);
|
|
}
|
|
|
|
static void ieee80211_add_eht_ie(struct ieee80211_sub_if_data *sdata,
|
|
struct sk_buff *skb,
|
|
struct ieee80211_supported_band *sband)
|
|
{
|
|
u8 *pos;
|
|
const struct ieee80211_sta_he_cap *he_cap;
|
|
const struct ieee80211_sta_eht_cap *eht_cap;
|
|
u8 eht_cap_size;
|
|
|
|
he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
|
|
eht_cap = ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif);
|
|
|
|
/*
|
|
* EHT capabilities element is only added if the HE capabilities element
|
|
* was added so assume that 'he_cap' is valid and don't check it.
|
|
*/
|
|
if (WARN_ON(!he_cap || !eht_cap))
|
|
return;
|
|
|
|
eht_cap_size =
|
|
2 + 1 + sizeof(eht_cap->eht_cap_elem) +
|
|
ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
|
|
&eht_cap->eht_cap_elem,
|
|
false) +
|
|
ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
|
|
eht_cap->eht_cap_elem.phy_cap_info);
|
|
pos = skb_put(skb, eht_cap_size);
|
|
ieee80211_ie_build_eht_cap(pos, he_cap, eht_cap, pos + eht_cap_size,
|
|
false);
|
|
}
|
|
|
|
static void ieee80211_assoc_add_rates(struct sk_buff *skb,
|
|
enum nl80211_chan_width width,
|
|
struct ieee80211_supported_band *sband,
|
|
struct ieee80211_mgd_assoc_data *assoc_data)
|
|
{
|
|
unsigned int rates_len, supp_rates_len;
|
|
u32 rates = 0;
|
|
int i, count;
|
|
u8 *pos;
|
|
|
|
if (assoc_data->supp_rates_len) {
|
|
/*
|
|
* Get all rates supported by the device and the AP as
|
|
* some APs don't like getting a superset of their rates
|
|
* in the association request (e.g. D-Link DAP 1353 in
|
|
* b-only mode)...
|
|
*/
|
|
rates_len = ieee80211_parse_bitrates(width, sband,
|
|
assoc_data->supp_rates,
|
|
assoc_data->supp_rates_len,
|
|
&rates);
|
|
} else {
|
|
/*
|
|
* In case AP not provide any supported rates information
|
|
* before association, we send information element(s) with
|
|
* all rates that we support.
|
|
*/
|
|
rates_len = sband->n_bitrates;
|
|
for (i = 0; i < sband->n_bitrates; i++)
|
|
rates |= BIT(i);
|
|
}
|
|
|
|
supp_rates_len = rates_len;
|
|
if (supp_rates_len > 8)
|
|
supp_rates_len = 8;
|
|
|
|
pos = skb_put(skb, supp_rates_len + 2);
|
|
*pos++ = WLAN_EID_SUPP_RATES;
|
|
*pos++ = supp_rates_len;
|
|
|
|
count = 0;
|
|
for (i = 0; i < sband->n_bitrates; i++) {
|
|
if (BIT(i) & rates) {
|
|
int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 5);
|
|
*pos++ = (u8)rate;
|
|
if (++count == 8)
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (rates_len > count) {
|
|
pos = skb_put(skb, rates_len - count + 2);
|
|
*pos++ = WLAN_EID_EXT_SUPP_RATES;
|
|
*pos++ = rates_len - count;
|
|
|
|
for (i++; i < sband->n_bitrates; i++) {
|
|
if (BIT(i) & rates) {
|
|
int rate;
|
|
|
|
rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 5);
|
|
*pos++ = (u8)rate;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static size_t ieee80211_add_before_ht_elems(struct sk_buff *skb,
|
|
const u8 *elems,
|
|
size_t elems_len,
|
|
size_t offset)
|
|
{
|
|
size_t noffset;
|
|
|
|
static const u8 before_ht[] = {
|
|
WLAN_EID_SSID,
|
|
WLAN_EID_SUPP_RATES,
|
|
WLAN_EID_EXT_SUPP_RATES,
|
|
WLAN_EID_PWR_CAPABILITY,
|
|
WLAN_EID_SUPPORTED_CHANNELS,
|
|
WLAN_EID_RSN,
|
|
WLAN_EID_QOS_CAPA,
|
|
WLAN_EID_RRM_ENABLED_CAPABILITIES,
|
|
WLAN_EID_MOBILITY_DOMAIN,
|
|
WLAN_EID_FAST_BSS_TRANSITION, /* reassoc only */
|
|
WLAN_EID_RIC_DATA, /* reassoc only */
|
|
WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
|
|
};
|
|
static const u8 after_ric[] = {
|
|
WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
|
|
WLAN_EID_HT_CAPABILITY,
|
|
WLAN_EID_BSS_COEX_2040,
|
|
/* luckily this is almost always there */
|
|
WLAN_EID_EXT_CAPABILITY,
|
|
WLAN_EID_QOS_TRAFFIC_CAPA,
|
|
WLAN_EID_TIM_BCAST_REQ,
|
|
WLAN_EID_INTERWORKING,
|
|
/* 60 GHz (Multi-band, DMG, MMS) can't happen */
|
|
WLAN_EID_VHT_CAPABILITY,
|
|
WLAN_EID_OPMODE_NOTIF,
|
|
};
|
|
|
|
if (!elems_len)
|
|
return offset;
|
|
|
|
noffset = ieee80211_ie_split_ric(elems, elems_len,
|
|
before_ht,
|
|
ARRAY_SIZE(before_ht),
|
|
after_ric,
|
|
ARRAY_SIZE(after_ric),
|
|
offset);
|
|
skb_put_data(skb, elems + offset, noffset - offset);
|
|
|
|
return noffset;
|
|
}
|
|
|
|
static size_t ieee80211_add_before_vht_elems(struct sk_buff *skb,
|
|
const u8 *elems,
|
|
size_t elems_len,
|
|
size_t offset)
|
|
{
|
|
static const u8 before_vht[] = {
|
|
/*
|
|
* no need to list the ones split off before HT
|
|
* or generated here
|
|
*/
|
|
WLAN_EID_BSS_COEX_2040,
|
|
WLAN_EID_EXT_CAPABILITY,
|
|
WLAN_EID_QOS_TRAFFIC_CAPA,
|
|
WLAN_EID_TIM_BCAST_REQ,
|
|
WLAN_EID_INTERWORKING,
|
|
/* 60 GHz (Multi-band, DMG, MMS) can't happen */
|
|
};
|
|
size_t noffset;
|
|
|
|
if (!elems_len)
|
|
return offset;
|
|
|
|
/* RIC already taken care of in ieee80211_add_before_ht_elems() */
|
|
noffset = ieee80211_ie_split(elems, elems_len,
|
|
before_vht, ARRAY_SIZE(before_vht),
|
|
offset);
|
|
skb_put_data(skb, elems + offset, noffset - offset);
|
|
|
|
return noffset;
|
|
}
|
|
|
|
static size_t ieee80211_add_before_he_elems(struct sk_buff *skb,
|
|
const u8 *elems,
|
|
size_t elems_len,
|
|
size_t offset)
|
|
{
|
|
static const u8 before_he[] = {
|
|
/*
|
|
* no need to list the ones split off before VHT
|
|
* or generated here
|
|
*/
|
|
WLAN_EID_OPMODE_NOTIF,
|
|
WLAN_EID_EXTENSION, WLAN_EID_EXT_FUTURE_CHAN_GUIDANCE,
|
|
/* 11ai elements */
|
|
WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_SESSION,
|
|
WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_PUBLIC_KEY,
|
|
WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_KEY_CONFIRM,
|
|
WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_HLP_CONTAINER,
|
|
WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_IP_ADDR_ASSIGN,
|
|
/* TODO: add 11ah/11aj/11ak elements */
|
|
};
|
|
size_t noffset;
|
|
|
|
if (!elems_len)
|
|
return offset;
|
|
|
|
/* RIC already taken care of in ieee80211_add_before_ht_elems() */
|
|
noffset = ieee80211_ie_split(elems, elems_len,
|
|
before_he, ARRAY_SIZE(before_he),
|
|
offset);
|
|
skb_put_data(skb, elems + offset, noffset - offset);
|
|
|
|
return noffset;
|
|
}
|
|
|
|
#define PRESENT_ELEMS_MAX 8
|
|
#define PRESENT_ELEM_EXT_OFFS 0x100
|
|
|
|
static void ieee80211_assoc_add_ml_elem(struct ieee80211_sub_if_data *sdata,
|
|
struct sk_buff *skb, u16 capab,
|
|
const struct element *ext_capa,
|
|
const u16 *present_elems);
|
|
|
|
static size_t ieee80211_assoc_link_elems(struct ieee80211_sub_if_data *sdata,
|
|
struct sk_buff *skb, u16 *capab,
|
|
const struct element *ext_capa,
|
|
const u8 *extra_elems,
|
|
size_t extra_elems_len,
|
|
unsigned int link_id,
|
|
struct ieee80211_link_data *link,
|
|
u16 *present_elems)
|
|
{
|
|
enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
|
|
struct cfg80211_bss *cbss = assoc_data->link[link_id].bss;
|
|
struct ieee80211_channel *chan = cbss->channel;
|
|
const struct ieee80211_sband_iftype_data *iftd;
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_supported_band *sband;
|
|
enum nl80211_chan_width width = NL80211_CHAN_WIDTH_20;
|
|
struct ieee80211_chanctx_conf *chanctx_conf;
|
|
enum ieee80211_smps_mode smps_mode;
|
|
u16 orig_capab = *capab;
|
|
size_t offset = 0;
|
|
int present_elems_len = 0;
|
|
u8 *pos;
|
|
int i;
|
|
|
|
#define ADD_PRESENT_ELEM(id) do { \
|
|
/* need a last for termination - we use 0 == SSID */ \
|
|
if (!WARN_ON(present_elems_len >= PRESENT_ELEMS_MAX - 1)) \
|
|
present_elems[present_elems_len++] = (id); \
|
|
} while (0)
|
|
#define ADD_PRESENT_EXT_ELEM(id) ADD_PRESENT_ELEM(PRESENT_ELEM_EXT_OFFS | (id))
|
|
|
|
if (link)
|
|
smps_mode = link->smps_mode;
|
|
else if (sdata->u.mgd.powersave)
|
|
smps_mode = IEEE80211_SMPS_DYNAMIC;
|
|
else
|
|
smps_mode = IEEE80211_SMPS_OFF;
|
|
|
|
if (link) {
|
|
/*
|
|
* 5/10 MHz scenarios are only viable without MLO, in which
|
|
* case this pointer should be used ... All of this is a bit
|
|
* unclear though, not sure this even works at all.
|
|
*/
|
|
rcu_read_lock();
|
|
chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
|
|
if (chanctx_conf)
|
|
width = chanctx_conf->def.width;
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
sband = local->hw.wiphy->bands[chan->band];
|
|
iftd = ieee80211_get_sband_iftype_data(sband, iftype);
|
|
|
|
if (sband->band == NL80211_BAND_2GHZ) {
|
|
*capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
|
|
*capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
|
|
}
|
|
|
|
if ((cbss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
|
|
ieee80211_hw_check(&local->hw, SPECTRUM_MGMT))
|
|
*capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
|
|
|
|
if (sband->band != NL80211_BAND_S1GHZ)
|
|
ieee80211_assoc_add_rates(skb, width, sband, assoc_data);
|
|
|
|
if (*capab & WLAN_CAPABILITY_SPECTRUM_MGMT ||
|
|
*capab & WLAN_CAPABILITY_RADIO_MEASURE) {
|
|
struct cfg80211_chan_def chandef = {
|
|
.width = width,
|
|
.chan = chan,
|
|
};
|
|
|
|
pos = skb_put(skb, 4);
|
|
*pos++ = WLAN_EID_PWR_CAPABILITY;
|
|
*pos++ = 2;
|
|
*pos++ = 0; /* min tx power */
|
|
/* max tx power */
|
|
*pos++ = ieee80211_chandef_max_power(&chandef);
|
|
ADD_PRESENT_ELEM(WLAN_EID_PWR_CAPABILITY);
|
|
}
|
|
|
|
/*
|
|
* Per spec, we shouldn't include the list of channels if we advertise
|
|
* support for extended channel switching, but we've always done that;
|
|
* (for now?) apply this restriction only on the (new) 6 GHz band.
|
|
*/
|
|
if (*capab & WLAN_CAPABILITY_SPECTRUM_MGMT &&
|
|
(sband->band != NL80211_BAND_6GHZ ||
|
|
!ext_capa || ext_capa->datalen < 1 ||
|
|
!(ext_capa->data[0] & WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING))) {
|
|
/* TODO: get this in reg domain format */
|
|
pos = skb_put(skb, 2 * sband->n_channels + 2);
|
|
*pos++ = WLAN_EID_SUPPORTED_CHANNELS;
|
|
*pos++ = 2 * sband->n_channels;
|
|
for (i = 0; i < sband->n_channels; i++) {
|
|
int cf = sband->channels[i].center_freq;
|
|
|
|
*pos++ = ieee80211_frequency_to_channel(cf);
|
|
*pos++ = 1; /* one channel in the subband*/
|
|
}
|
|
ADD_PRESENT_ELEM(WLAN_EID_SUPPORTED_CHANNELS);
|
|
}
|
|
|
|
/* if present, add any custom IEs that go before HT */
|
|
offset = ieee80211_add_before_ht_elems(skb, extra_elems,
|
|
extra_elems_len,
|
|
offset);
|
|
|
|
if (sband->band != NL80211_BAND_6GHZ &&
|
|
!(assoc_data->link[link_id].conn_flags & IEEE80211_CONN_DISABLE_HT)) {
|
|
ieee80211_add_ht_ie(sdata, skb,
|
|
assoc_data->link[link_id].ap_ht_param,
|
|
sband, chan, smps_mode,
|
|
assoc_data->link[link_id].conn_flags);
|
|
ADD_PRESENT_ELEM(WLAN_EID_HT_CAPABILITY);
|
|
}
|
|
|
|
/* if present, add any custom IEs that go before VHT */
|
|
offset = ieee80211_add_before_vht_elems(skb, extra_elems,
|
|
extra_elems_len,
|
|
offset);
|
|
|
|
if (sband->band != NL80211_BAND_6GHZ &&
|
|
!(assoc_data->link[link_id].conn_flags & IEEE80211_CONN_DISABLE_VHT)) {
|
|
bool mu_mimo_owner =
|
|
ieee80211_add_vht_ie(sdata, skb, sband,
|
|
&assoc_data->link[link_id].ap_vht_cap,
|
|
assoc_data->link[link_id].conn_flags);
|
|
|
|
if (link)
|
|
link->conf->mu_mimo_owner = mu_mimo_owner;
|
|
ADD_PRESENT_ELEM(WLAN_EID_VHT_CAPABILITY);
|
|
}
|
|
|
|
/*
|
|
* If AP doesn't support HT, mark HE and EHT as disabled.
|
|
* If on the 5GHz band, make sure it supports VHT.
|
|
*/
|
|
if (assoc_data->link[link_id].conn_flags & IEEE80211_CONN_DISABLE_HT ||
|
|
(sband->band == NL80211_BAND_5GHZ &&
|
|
assoc_data->link[link_id].conn_flags & IEEE80211_CONN_DISABLE_VHT))
|
|
assoc_data->link[link_id].conn_flags |=
|
|
IEEE80211_CONN_DISABLE_HE |
|
|
IEEE80211_CONN_DISABLE_EHT;
|
|
|
|
/* if present, add any custom IEs that go before HE */
|
|
offset = ieee80211_add_before_he_elems(skb, extra_elems,
|
|
extra_elems_len,
|
|
offset);
|
|
|
|
if (!(assoc_data->link[link_id].conn_flags & IEEE80211_CONN_DISABLE_HE)) {
|
|
ieee80211_add_he_ie(sdata, skb, sband, smps_mode,
|
|
assoc_data->link[link_id].conn_flags);
|
|
ADD_PRESENT_EXT_ELEM(WLAN_EID_EXT_HE_CAPABILITY);
|
|
}
|
|
|
|
/*
|
|
* careful - need to know about all the present elems before
|
|
* calling ieee80211_assoc_add_ml_elem(), so add this one if
|
|
* we're going to put it after the ML element
|
|
*/
|
|
if (!(assoc_data->link[link_id].conn_flags & IEEE80211_CONN_DISABLE_EHT))
|
|
ADD_PRESENT_EXT_ELEM(WLAN_EID_EXT_EHT_CAPABILITY);
|
|
|
|
if (link_id == assoc_data->assoc_link_id)
|
|
ieee80211_assoc_add_ml_elem(sdata, skb, orig_capab, ext_capa,
|
|
present_elems);
|
|
|
|
/* crash if somebody gets it wrong */
|
|
present_elems = NULL;
|
|
|
|
if (!(assoc_data->link[link_id].conn_flags & IEEE80211_CONN_DISABLE_EHT))
|
|
ieee80211_add_eht_ie(sdata, skb, sband);
|
|
|
|
if (sband->band == NL80211_BAND_S1GHZ) {
|
|
ieee80211_add_aid_request_ie(sdata, skb);
|
|
ieee80211_add_s1g_capab_ie(sdata, &sband->s1g_cap, skb);
|
|
}
|
|
|
|
if (iftd && iftd->vendor_elems.data && iftd->vendor_elems.len)
|
|
skb_put_data(skb, iftd->vendor_elems.data, iftd->vendor_elems.len);
|
|
|
|
if (link)
|
|
link->u.mgd.conn_flags = assoc_data->link[link_id].conn_flags;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static void ieee80211_add_non_inheritance_elem(struct sk_buff *skb,
|
|
const u16 *outer,
|
|
const u16 *inner)
|
|
{
|
|
unsigned int skb_len = skb->len;
|
|
bool at_extension = false;
|
|
bool added = false;
|
|
int i, j;
|
|
u8 *len, *list_len = NULL;
|
|
|
|
skb_put_u8(skb, WLAN_EID_EXTENSION);
|
|
len = skb_put(skb, 1);
|
|
skb_put_u8(skb, WLAN_EID_EXT_NON_INHERITANCE);
|
|
|
|
for (i = 0; i < PRESENT_ELEMS_MAX && outer[i]; i++) {
|
|
u16 elem = outer[i];
|
|
bool have_inner = false;
|
|
|
|
/* should at least be sorted in the sense of normal -> ext */
|
|
WARN_ON(at_extension && elem < PRESENT_ELEM_EXT_OFFS);
|
|
|
|
/* switch to extension list */
|
|
if (!at_extension && elem >= PRESENT_ELEM_EXT_OFFS) {
|
|
at_extension = true;
|
|
if (!list_len)
|
|
skb_put_u8(skb, 0);
|
|
list_len = NULL;
|
|
}
|
|
|
|
for (j = 0; j < PRESENT_ELEMS_MAX && inner[j]; j++) {
|
|
if (elem == inner[j]) {
|
|
have_inner = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (have_inner)
|
|
continue;
|
|
|
|
if (!list_len) {
|
|
list_len = skb_put(skb, 1);
|
|
*list_len = 0;
|
|
}
|
|
*list_len += 1;
|
|
skb_put_u8(skb, (u8)elem);
|
|
added = true;
|
|
}
|
|
|
|
/* if we added a list but no extension list, make a zero-len one */
|
|
if (added && (!at_extension || !list_len))
|
|
skb_put_u8(skb, 0);
|
|
|
|
/* if nothing added remove extension element completely */
|
|
if (!added)
|
|
skb_trim(skb, skb_len);
|
|
else
|
|
*len = skb->len - skb_len - 2;
|
|
}
|
|
|
|
static void ieee80211_assoc_add_ml_elem(struct ieee80211_sub_if_data *sdata,
|
|
struct sk_buff *skb, u16 capab,
|
|
const struct element *ext_capa,
|
|
const u16 *outer_present_elems)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
|
|
struct ieee80211_multi_link_elem *ml_elem;
|
|
struct ieee80211_mle_basic_common_info *common;
|
|
const struct wiphy_iftype_ext_capab *ift_ext_capa;
|
|
__le16 eml_capa = 0, mld_capa_ops = 0;
|
|
unsigned int link_id;
|
|
u8 *ml_elem_len;
|
|
void *capab_pos;
|
|
|
|
if (!ieee80211_vif_is_mld(&sdata->vif))
|
|
return;
|
|
|
|
ift_ext_capa = cfg80211_get_iftype_ext_capa(local->hw.wiphy,
|
|
ieee80211_vif_type_p2p(&sdata->vif));
|
|
if (ift_ext_capa) {
|
|
eml_capa = cpu_to_le16(ift_ext_capa->eml_capabilities);
|
|
mld_capa_ops = cpu_to_le16(ift_ext_capa->mld_capa_and_ops);
|
|
}
|
|
|
|
skb_put_u8(skb, WLAN_EID_EXTENSION);
|
|
ml_elem_len = skb_put(skb, 1);
|
|
skb_put_u8(skb, WLAN_EID_EXT_EHT_MULTI_LINK);
|
|
ml_elem = skb_put(skb, sizeof(*ml_elem));
|
|
ml_elem->control =
|
|
cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC |
|
|
IEEE80211_MLC_BASIC_PRES_MLD_CAPA_OP);
|
|
common = skb_put(skb, sizeof(*common));
|
|
common->len = sizeof(*common) +
|
|
2; /* MLD capa/ops */
|
|
memcpy(common->mld_mac_addr, sdata->vif.addr, ETH_ALEN);
|
|
|
|
/* add EML_CAPA only if needed, see Draft P802.11be_D2.1, 35.3.17 */
|
|
if (eml_capa &
|
|
cpu_to_le16((IEEE80211_EML_CAP_EMLSR_SUPP |
|
|
IEEE80211_EML_CAP_EMLMR_SUPPORT))) {
|
|
common->len += 2; /* EML capabilities */
|
|
ml_elem->control |=
|
|
cpu_to_le16(IEEE80211_MLC_BASIC_PRES_EML_CAPA);
|
|
skb_put_data(skb, &eml_capa, sizeof(eml_capa));
|
|
}
|
|
/* need indication from userspace to support this */
|
|
mld_capa_ops &= ~cpu_to_le16(IEEE80211_MLD_CAP_OP_TID_TO_LINK_MAP_NEG_SUPP);
|
|
skb_put_data(skb, &mld_capa_ops, sizeof(mld_capa_ops));
|
|
|
|
for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
|
|
u16 link_present_elems[PRESENT_ELEMS_MAX] = {};
|
|
const u8 *extra_elems;
|
|
size_t extra_elems_len;
|
|
size_t extra_used;
|
|
u8 *subelem_len = NULL;
|
|
__le16 ctrl;
|
|
|
|
if (!assoc_data->link[link_id].bss ||
|
|
link_id == assoc_data->assoc_link_id)
|
|
continue;
|
|
|
|
extra_elems = assoc_data->link[link_id].elems;
|
|
extra_elems_len = assoc_data->link[link_id].elems_len;
|
|
|
|
skb_put_u8(skb, IEEE80211_MLE_SUBELEM_PER_STA_PROFILE);
|
|
subelem_len = skb_put(skb, 1);
|
|
|
|
ctrl = cpu_to_le16(link_id |
|
|
IEEE80211_MLE_STA_CONTROL_COMPLETE_PROFILE |
|
|
IEEE80211_MLE_STA_CONTROL_STA_MAC_ADDR_PRESENT);
|
|
skb_put_data(skb, &ctrl, sizeof(ctrl));
|
|
skb_put_u8(skb, 1 + ETH_ALEN); /* STA Info Length */
|
|
skb_put_data(skb, assoc_data->link[link_id].addr,
|
|
ETH_ALEN);
|
|
/*
|
|
* Now add the contents of the (re)association request,
|
|
* but the "listen interval" and "current AP address"
|
|
* (if applicable) are skipped. So we only have
|
|
* the capability field (remember the position and fill
|
|
* later), followed by the elements added below by
|
|
* calling ieee80211_assoc_link_elems().
|
|
*/
|
|
capab_pos = skb_put(skb, 2);
|
|
|
|
extra_used = ieee80211_assoc_link_elems(sdata, skb, &capab,
|
|
ext_capa,
|
|
extra_elems,
|
|
extra_elems_len,
|
|
link_id, NULL,
|
|
link_present_elems);
|
|
if (extra_elems)
|
|
skb_put_data(skb, extra_elems + extra_used,
|
|
extra_elems_len - extra_used);
|
|
|
|
put_unaligned_le16(capab, capab_pos);
|
|
|
|
ieee80211_add_non_inheritance_elem(skb, outer_present_elems,
|
|
link_present_elems);
|
|
|
|
ieee80211_fragment_element(skb, subelem_len,
|
|
IEEE80211_MLE_SUBELEM_FRAGMENT);
|
|
}
|
|
|
|
ieee80211_fragment_element(skb, ml_elem_len, WLAN_EID_FRAGMENT);
|
|
}
|
|
|
|
static int ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
|
|
struct ieee80211_link_data *link;
|
|
struct sk_buff *skb;
|
|
struct ieee80211_mgmt *mgmt;
|
|
u8 *pos, qos_info, *ie_start;
|
|
size_t offset, noffset;
|
|
u16 capab = WLAN_CAPABILITY_ESS, link_capab;
|
|
__le16 listen_int;
|
|
struct element *ext_capa = NULL;
|
|
enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
|
|
struct ieee80211_prep_tx_info info = {};
|
|
unsigned int link_id, n_links = 0;
|
|
u16 present_elems[PRESENT_ELEMS_MAX] = {};
|
|
void *capab_pos;
|
|
size_t size;
|
|
int ret;
|
|
|
|
/* we know it's writable, cast away the const */
|
|
if (assoc_data->ie_len)
|
|
ext_capa = (void *)cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY,
|
|
assoc_data->ie,
|
|
assoc_data->ie_len);
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
size = local->hw.extra_tx_headroom +
|
|
sizeof(*mgmt) + /* bit too much but doesn't matter */
|
|
2 + assoc_data->ssid_len + /* SSID */
|
|
assoc_data->ie_len + /* extra IEs */
|
|
(assoc_data->fils_kek_len ? 16 /* AES-SIV */ : 0) +
|
|
9; /* WMM */
|
|
|
|
for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
|
|
struct cfg80211_bss *cbss = assoc_data->link[link_id].bss;
|
|
const struct ieee80211_sband_iftype_data *iftd;
|
|
struct ieee80211_supported_band *sband;
|
|
|
|
if (!cbss)
|
|
continue;
|
|
|
|
sband = local->hw.wiphy->bands[cbss->channel->band];
|
|
|
|
n_links++;
|
|
/* add STA profile elements length */
|
|
size += assoc_data->link[link_id].elems_len;
|
|
/* and supported rates length */
|
|
size += 4 + sband->n_bitrates;
|
|
/* supported channels */
|
|
size += 2 + 2 * sband->n_channels;
|
|
|
|
iftd = ieee80211_get_sband_iftype_data(sband, iftype);
|
|
if (iftd)
|
|
size += iftd->vendor_elems.len;
|
|
|
|
/* power capability */
|
|
size += 4;
|
|
|
|
/* HT, VHT, HE, EHT */
|
|
size += 2 + sizeof(struct ieee80211_ht_cap);
|
|
size += 2 + sizeof(struct ieee80211_vht_cap);
|
|
size += 2 + 1 + sizeof(struct ieee80211_he_cap_elem) +
|
|
sizeof(struct ieee80211_he_mcs_nss_supp) +
|
|
IEEE80211_HE_PPE_THRES_MAX_LEN;
|
|
|
|
if (sband->band == NL80211_BAND_6GHZ)
|
|
size += 2 + 1 + sizeof(struct ieee80211_he_6ghz_capa);
|
|
|
|
size += 2 + 1 + sizeof(struct ieee80211_eht_cap_elem) +
|
|
sizeof(struct ieee80211_eht_mcs_nss_supp) +
|
|
IEEE80211_EHT_PPE_THRES_MAX_LEN;
|
|
|
|
/* non-inheritance element */
|
|
size += 2 + 2 + PRESENT_ELEMS_MAX;
|
|
|
|
/* should be the same across all BSSes */
|
|
if (cbss->capability & WLAN_CAPABILITY_PRIVACY)
|
|
capab |= WLAN_CAPABILITY_PRIVACY;
|
|
}
|
|
|
|
if (ieee80211_vif_is_mld(&sdata->vif)) {
|
|
/* consider the multi-link element with STA profile */
|
|
size += sizeof(struct ieee80211_multi_link_elem);
|
|
/* max common info field in basic multi-link element */
|
|
size += sizeof(struct ieee80211_mle_basic_common_info) +
|
|
2 + /* capa & op */
|
|
2; /* EML capa */
|
|
|
|
/*
|
|
* The capability elements were already considered above;
|
|
* note this over-estimates a bit because there's no
|
|
* STA profile for the assoc link.
|
|
*/
|
|
size += (n_links - 1) *
|
|
(1 + 1 + /* subelement ID/length */
|
|
2 + /* STA control */
|
|
1 + ETH_ALEN + 2 /* STA Info field */);
|
|
}
|
|
|
|
link = sdata_dereference(sdata->link[assoc_data->assoc_link_id], sdata);
|
|
if (WARN_ON(!link))
|
|
return -EINVAL;
|
|
|
|
if (WARN_ON(!assoc_data->link[assoc_data->assoc_link_id].bss))
|
|
return -EINVAL;
|
|
|
|
skb = alloc_skb(size, GFP_KERNEL);
|
|
if (!skb)
|
|
return -ENOMEM;
|
|
|
|
skb_reserve(skb, local->hw.extra_tx_headroom);
|
|
|
|
if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM)
|
|
capab |= WLAN_CAPABILITY_RADIO_MEASURE;
|
|
|
|
/* Set MBSSID support for HE AP if needed */
|
|
if (ieee80211_hw_check(&local->hw, SUPPORTS_ONLY_HE_MULTI_BSSID) &&
|
|
!(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HE) &&
|
|
ext_capa && ext_capa->datalen >= 3)
|
|
ext_capa->data[2] |= WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT;
|
|
|
|
mgmt = skb_put_zero(skb, 24);
|
|
memcpy(mgmt->da, sdata->vif.cfg.ap_addr, ETH_ALEN);
|
|
memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
|
|
memcpy(mgmt->bssid, sdata->vif.cfg.ap_addr, ETH_ALEN);
|
|
|
|
listen_int = cpu_to_le16(assoc_data->s1g ?
|
|
ieee80211_encode_usf(local->hw.conf.listen_interval) :
|
|
local->hw.conf.listen_interval);
|
|
if (!is_zero_ether_addr(assoc_data->prev_ap_addr)) {
|
|
skb_put(skb, 10);
|
|
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
|
|
IEEE80211_STYPE_REASSOC_REQ);
|
|
capab_pos = &mgmt->u.reassoc_req.capab_info;
|
|
mgmt->u.reassoc_req.listen_interval = listen_int;
|
|
memcpy(mgmt->u.reassoc_req.current_ap,
|
|
assoc_data->prev_ap_addr, ETH_ALEN);
|
|
info.subtype = IEEE80211_STYPE_REASSOC_REQ;
|
|
} else {
|
|
skb_put(skb, 4);
|
|
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
|
|
IEEE80211_STYPE_ASSOC_REQ);
|
|
capab_pos = &mgmt->u.assoc_req.capab_info;
|
|
mgmt->u.assoc_req.listen_interval = listen_int;
|
|
info.subtype = IEEE80211_STYPE_ASSOC_REQ;
|
|
}
|
|
|
|
/* SSID */
|
|
pos = skb_put(skb, 2 + assoc_data->ssid_len);
|
|
ie_start = pos;
|
|
*pos++ = WLAN_EID_SSID;
|
|
*pos++ = assoc_data->ssid_len;
|
|
memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
|
|
|
|
/* add the elements for the assoc (main) link */
|
|
link_capab = capab;
|
|
offset = ieee80211_assoc_link_elems(sdata, skb, &link_capab,
|
|
ext_capa,
|
|
assoc_data->ie,
|
|
assoc_data->ie_len,
|
|
assoc_data->assoc_link_id, link,
|
|
present_elems);
|
|
put_unaligned_le16(link_capab, capab_pos);
|
|
|
|
/* if present, add any custom non-vendor IEs */
|
|
if (assoc_data->ie_len) {
|
|
noffset = ieee80211_ie_split_vendor(assoc_data->ie,
|
|
assoc_data->ie_len,
|
|
offset);
|
|
skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
|
|
offset = noffset;
|
|
}
|
|
|
|
if (assoc_data->wmm) {
|
|
if (assoc_data->uapsd) {
|
|
qos_info = ifmgd->uapsd_queues;
|
|
qos_info |= (ifmgd->uapsd_max_sp_len <<
|
|
IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT);
|
|
} else {
|
|
qos_info = 0;
|
|
}
|
|
|
|
pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info);
|
|
}
|
|
|
|
/* add any remaining custom (i.e. vendor specific here) IEs */
|
|
if (assoc_data->ie_len) {
|
|
noffset = assoc_data->ie_len;
|
|
skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
|
|
}
|
|
|
|
if (assoc_data->fils_kek_len) {
|
|
ret = fils_encrypt_assoc_req(skb, assoc_data);
|
|
if (ret < 0) {
|
|
dev_kfree_skb(skb);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
pos = skb_tail_pointer(skb);
|
|
kfree(ifmgd->assoc_req_ies);
|
|
ifmgd->assoc_req_ies = kmemdup(ie_start, pos - ie_start, GFP_ATOMIC);
|
|
if (!ifmgd->assoc_req_ies) {
|
|
dev_kfree_skb(skb);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ifmgd->assoc_req_ies_len = pos - ie_start;
|
|
|
|
info.link_id = assoc_data->assoc_link_id;
|
|
drv_mgd_prepare_tx(local, sdata, &info);
|
|
|
|
IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
|
|
if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
|
|
IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
|
|
IEEE80211_TX_INTFL_MLME_CONN_TX;
|
|
ieee80211_tx_skb(sdata, skb);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void ieee80211_send_pspoll(struct ieee80211_local *local,
|
|
struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_pspoll *pspoll;
|
|
struct sk_buff *skb;
|
|
|
|
skb = ieee80211_pspoll_get(&local->hw, &sdata->vif);
|
|
if (!skb)
|
|
return;
|
|
|
|
pspoll = (struct ieee80211_pspoll *) skb->data;
|
|
pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
|
|
|
|
IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
|
|
ieee80211_tx_skb(sdata, skb);
|
|
}
|
|
|
|
void ieee80211_send_nullfunc(struct ieee80211_local *local,
|
|
struct ieee80211_sub_if_data *sdata,
|
|
bool powersave)
|
|
{
|
|
struct sk_buff *skb;
|
|
struct ieee80211_hdr_3addr *nullfunc;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
|
|
skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif, -1,
|
|
!ieee80211_hw_check(&local->hw,
|
|
DOESNT_SUPPORT_QOS_NDP));
|
|
if (!skb)
|
|
return;
|
|
|
|
nullfunc = (struct ieee80211_hdr_3addr *) skb->data;
|
|
if (powersave)
|
|
nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
|
|
|
|
IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
|
|
IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
|
|
|
|
if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
|
|
IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
|
|
|
|
if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
|
|
IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
|
|
|
|
ieee80211_tx_skb(sdata, skb);
|
|
}
|
|
|
|
void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
|
|
struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct sk_buff *skb;
|
|
struct ieee80211_hdr *nullfunc;
|
|
__le16 fc;
|
|
|
|
if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
|
|
return;
|
|
|
|
skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
|
|
if (!skb)
|
|
return;
|
|
|
|
skb_reserve(skb, local->hw.extra_tx_headroom);
|
|
|
|
nullfunc = skb_put_zero(skb, 30);
|
|
fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
|
|
IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
|
|
nullfunc->frame_control = fc;
|
|
memcpy(nullfunc->addr1, sdata->deflink.u.mgd.bssid, ETH_ALEN);
|
|
memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
|
|
memcpy(nullfunc->addr3, sdata->deflink.u.mgd.bssid, ETH_ALEN);
|
|
memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
|
|
|
|
IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
|
|
IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
|
|
ieee80211_tx_skb(sdata, skb);
|
|
}
|
|
|
|
/* spectrum management related things */
|
|
static void ieee80211_chswitch_work(struct wiphy *wiphy,
|
|
struct wiphy_work *work)
|
|
{
|
|
struct ieee80211_link_data *link =
|
|
container_of(work, struct ieee80211_link_data,
|
|
u.mgd.chswitch_work.work);
|
|
struct ieee80211_sub_if_data *sdata = link->sdata;
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
int ret;
|
|
|
|
if (!ieee80211_sdata_running(sdata))
|
|
return;
|
|
|
|
lockdep_assert_wiphy(local->hw.wiphy);
|
|
|
|
if (!ifmgd->associated)
|
|
return;
|
|
|
|
if (!link->conf->csa_active)
|
|
return;
|
|
|
|
/*
|
|
* using reservation isn't immediate as it may be deferred until later
|
|
* with multi-vif. once reservation is complete it will re-schedule the
|
|
* work with no reserved_chanctx so verify chandef to check if it
|
|
* completed successfully
|
|
*/
|
|
|
|
if (link->reserved_chanctx) {
|
|
/*
|
|
* with multi-vif csa driver may call ieee80211_csa_finish()
|
|
* many times while waiting for other interfaces to use their
|
|
* reservations
|
|
*/
|
|
if (link->reserved_ready)
|
|
return;
|
|
|
|
ret = ieee80211_link_use_reserved_context(link);
|
|
if (ret) {
|
|
sdata_info(sdata,
|
|
"failed to use reserved channel context, disconnecting (err=%d)\n",
|
|
ret);
|
|
wiphy_work_queue(sdata->local->hw.wiphy,
|
|
&ifmgd->csa_connection_drop_work);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (!cfg80211_chandef_identical(&link->conf->chandef,
|
|
&link->csa_chandef)) {
|
|
sdata_info(sdata,
|
|
"failed to finalize channel switch, disconnecting\n");
|
|
wiphy_work_queue(sdata->local->hw.wiphy,
|
|
&ifmgd->csa_connection_drop_work);
|
|
return;
|
|
}
|
|
|
|
link->u.mgd.csa_waiting_bcn = true;
|
|
|
|
ieee80211_sta_reset_beacon_monitor(sdata);
|
|
ieee80211_sta_reset_conn_monitor(sdata);
|
|
}
|
|
|
|
static void ieee80211_chswitch_post_beacon(struct ieee80211_link_data *link)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = link->sdata;
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
int ret;
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
WARN_ON(!link->conf->csa_active);
|
|
|
|
if (link->csa_block_tx) {
|
|
ieee80211_wake_vif_queues(local, sdata,
|
|
IEEE80211_QUEUE_STOP_REASON_CSA);
|
|
link->csa_block_tx = false;
|
|
}
|
|
|
|
link->conf->csa_active = false;
|
|
link->u.mgd.csa_waiting_bcn = false;
|
|
/*
|
|
* If the CSA IE is still present on the beacon after the switch,
|
|
* we need to consider it as a new CSA (possibly to self).
|
|
*/
|
|
link->u.mgd.beacon_crc_valid = false;
|
|
|
|
ret = drv_post_channel_switch(link);
|
|
if (ret) {
|
|
sdata_info(sdata,
|
|
"driver post channel switch failed, disconnecting\n");
|
|
wiphy_work_queue(sdata->local->hw.wiphy,
|
|
&ifmgd->csa_connection_drop_work);
|
|
return;
|
|
}
|
|
|
|
cfg80211_ch_switch_notify(sdata->dev, &link->reserved_chandef,
|
|
link->link_id, 0);
|
|
}
|
|
|
|
void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success,
|
|
unsigned int link_id)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
|
|
|
|
trace_api_chswitch_done(sdata, success, link_id);
|
|
|
|
rcu_read_lock();
|
|
|
|
if (!success) {
|
|
sdata_info(sdata,
|
|
"driver channel switch failed, disconnecting\n");
|
|
wiphy_work_queue(sdata->local->hw.wiphy,
|
|
&sdata->u.mgd.csa_connection_drop_work);
|
|
} else {
|
|
struct ieee80211_link_data *link =
|
|
rcu_dereference(sdata->link[link_id]);
|
|
|
|
if (WARN_ON(!link)) {
|
|
rcu_read_unlock();
|
|
return;
|
|
}
|
|
|
|
wiphy_delayed_work_queue(sdata->local->hw.wiphy,
|
|
&link->u.mgd.chswitch_work, 0);
|
|
}
|
|
|
|
rcu_read_unlock();
|
|
}
|
|
EXPORT_SYMBOL(ieee80211_chswitch_done);
|
|
|
|
static void
|
|
ieee80211_sta_abort_chanswitch(struct ieee80211_link_data *link)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = link->sdata;
|
|
struct ieee80211_local *local = sdata->local;
|
|
|
|
lockdep_assert_wiphy(local->hw.wiphy);
|
|
|
|
if (!local->ops->abort_channel_switch)
|
|
return;
|
|
|
|
ieee80211_link_unreserve_chanctx(link);
|
|
|
|
if (link->csa_block_tx)
|
|
ieee80211_wake_vif_queues(local, sdata,
|
|
IEEE80211_QUEUE_STOP_REASON_CSA);
|
|
|
|
link->csa_block_tx = false;
|
|
link->conf->csa_active = false;
|
|
|
|
drv_abort_channel_switch(sdata);
|
|
}
|
|
|
|
static void
|
|
ieee80211_sta_process_chanswitch(struct ieee80211_link_data *link,
|
|
u64 timestamp, u32 device_timestamp,
|
|
struct ieee802_11_elems *elems,
|
|
bool beacon)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = link->sdata;
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct cfg80211_bss *cbss = link->u.mgd.bss;
|
|
struct ieee80211_chanctx_conf *conf;
|
|
struct ieee80211_chanctx *chanctx;
|
|
enum nl80211_band current_band;
|
|
struct ieee80211_csa_ie csa_ie;
|
|
struct ieee80211_channel_switch ch_switch;
|
|
struct ieee80211_bss *bss;
|
|
unsigned long timeout;
|
|
int res;
|
|
|
|
lockdep_assert_wiphy(local->hw.wiphy);
|
|
|
|
if (!cbss)
|
|
return;
|
|
|
|
current_band = cbss->channel->band;
|
|
bss = (void *)cbss->priv;
|
|
res = ieee80211_parse_ch_switch_ie(sdata, elems, current_band,
|
|
bss->vht_cap_info,
|
|
link->u.mgd.conn_flags,
|
|
link->u.mgd.bssid, &csa_ie);
|
|
|
|
if (!res) {
|
|
ch_switch.timestamp = timestamp;
|
|
ch_switch.device_timestamp = device_timestamp;
|
|
ch_switch.block_tx = csa_ie.mode;
|
|
ch_switch.chandef = csa_ie.chandef;
|
|
ch_switch.count = csa_ie.count;
|
|
ch_switch.delay = csa_ie.max_switch_time;
|
|
}
|
|
|
|
if (res < 0)
|
|
goto drop_connection;
|
|
|
|
if (beacon && link->conf->csa_active &&
|
|
!link->u.mgd.csa_waiting_bcn) {
|
|
if (res)
|
|
ieee80211_sta_abort_chanswitch(link);
|
|
else
|
|
drv_channel_switch_rx_beacon(sdata, &ch_switch);
|
|
return;
|
|
} else if (link->conf->csa_active || res) {
|
|
/* disregard subsequent announcements if already processing */
|
|
return;
|
|
}
|
|
|
|
if (link->conf->chandef.chan->band !=
|
|
csa_ie.chandef.chan->band) {
|
|
sdata_info(sdata,
|
|
"AP %pM switches to different band (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
|
|
link->u.mgd.bssid,
|
|
csa_ie.chandef.chan->center_freq,
|
|
csa_ie.chandef.width, csa_ie.chandef.center_freq1,
|
|
csa_ie.chandef.center_freq2);
|
|
goto drop_connection;
|
|
}
|
|
|
|
if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef,
|
|
IEEE80211_CHAN_DISABLED)) {
|
|
sdata_info(sdata,
|
|
"AP %pM switches to unsupported channel "
|
|
"(%d.%03d MHz, width:%d, CF1/2: %d.%03d/%d MHz), "
|
|
"disconnecting\n",
|
|
link->u.mgd.bssid,
|
|
csa_ie.chandef.chan->center_freq,
|
|
csa_ie.chandef.chan->freq_offset,
|
|
csa_ie.chandef.width, csa_ie.chandef.center_freq1,
|
|
csa_ie.chandef.freq1_offset,
|
|
csa_ie.chandef.center_freq2);
|
|
goto drop_connection;
|
|
}
|
|
|
|
if (cfg80211_chandef_identical(&csa_ie.chandef,
|
|
&link->conf->chandef) &&
|
|
(!csa_ie.mode || !beacon)) {
|
|
if (link->u.mgd.csa_ignored_same_chan)
|
|
return;
|
|
sdata_info(sdata,
|
|
"AP %pM tries to chanswitch to same channel, ignore\n",
|
|
link->u.mgd.bssid);
|
|
link->u.mgd.csa_ignored_same_chan = true;
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Drop all TDLS peers - either we disconnect or move to a different
|
|
* channel from this point on. There's no telling what our peer will do.
|
|
* The TDLS WIDER_BW scenario is also problematic, as peers might now
|
|
* have an incompatible wider chandef.
|
|
*/
|
|
ieee80211_teardown_tdls_peers(sdata);
|
|
|
|
conf = rcu_dereference_protected(link->conf->chanctx_conf,
|
|
lockdep_is_held(&local->hw.wiphy->mtx));
|
|
if (!conf) {
|
|
sdata_info(sdata,
|
|
"no channel context assigned to vif?, disconnecting\n");
|
|
goto drop_connection;
|
|
}
|
|
|
|
chanctx = container_of(conf, struct ieee80211_chanctx, conf);
|
|
|
|
if (local->use_chanctx &&
|
|
!ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) {
|
|
sdata_info(sdata,
|
|
"driver doesn't support chan-switch with channel contexts\n");
|
|
goto drop_connection;
|
|
}
|
|
|
|
if (drv_pre_channel_switch(sdata, &ch_switch)) {
|
|
sdata_info(sdata,
|
|
"preparing for channel switch failed, disconnecting\n");
|
|
goto drop_connection;
|
|
}
|
|
|
|
res = ieee80211_link_reserve_chanctx(link, &csa_ie.chandef,
|
|
chanctx->mode, false);
|
|
if (res) {
|
|
sdata_info(sdata,
|
|
"failed to reserve channel context for channel switch, disconnecting (err=%d)\n",
|
|
res);
|
|
goto drop_connection;
|
|
}
|
|
|
|
link->conf->csa_active = true;
|
|
link->csa_chandef = csa_ie.chandef;
|
|
link->csa_block_tx = csa_ie.mode;
|
|
link->u.mgd.csa_ignored_same_chan = false;
|
|
link->u.mgd.beacon_crc_valid = false;
|
|
|
|
if (link->csa_block_tx)
|
|
ieee80211_stop_vif_queues(local, sdata,
|
|
IEEE80211_QUEUE_STOP_REASON_CSA);
|
|
|
|
cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef,
|
|
link->link_id, csa_ie.count,
|
|
csa_ie.mode, 0);
|
|
|
|
if (local->ops->channel_switch) {
|
|
/* use driver's channel switch callback */
|
|
drv_channel_switch(local, sdata, &ch_switch);
|
|
return;
|
|
}
|
|
|
|
/* channel switch handled in software */
|
|
timeout = TU_TO_JIFFIES((max_t(int, csa_ie.count, 1) - 1) *
|
|
cbss->beacon_interval);
|
|
wiphy_delayed_work_queue(local->hw.wiphy,
|
|
&link->u.mgd.chswitch_work,
|
|
timeout);
|
|
return;
|
|
drop_connection:
|
|
/*
|
|
* This is just so that the disconnect flow will know that
|
|
* we were trying to switch channel and failed. In case the
|
|
* mode is 1 (we are not allowed to Tx), we will know not to
|
|
* send a deauthentication frame. Those two fields will be
|
|
* reset when the disconnection worker runs.
|
|
*/
|
|
link->conf->csa_active = true;
|
|
link->csa_block_tx = csa_ie.mode;
|
|
|
|
wiphy_work_queue(sdata->local->hw.wiphy,
|
|
&ifmgd->csa_connection_drop_work);
|
|
}
|
|
|
|
static bool
|
|
ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_channel *channel,
|
|
const u8 *country_ie, u8 country_ie_len,
|
|
const u8 *pwr_constr_elem,
|
|
int *chan_pwr, int *pwr_reduction)
|
|
{
|
|
struct ieee80211_country_ie_triplet *triplet;
|
|
int chan = ieee80211_frequency_to_channel(channel->center_freq);
|
|
int i, chan_increment;
|
|
bool have_chan_pwr = false;
|
|
|
|
/* Invalid IE */
|
|
if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
|
|
return false;
|
|
|
|
triplet = (void *)(country_ie + 3);
|
|
country_ie_len -= 3;
|
|
|
|
switch (channel->band) {
|
|
default:
|
|
WARN_ON_ONCE(1);
|
|
fallthrough;
|
|
case NL80211_BAND_2GHZ:
|
|
case NL80211_BAND_60GHZ:
|
|
case NL80211_BAND_LC:
|
|
chan_increment = 1;
|
|
break;
|
|
case NL80211_BAND_5GHZ:
|
|
chan_increment = 4;
|
|
break;
|
|
case NL80211_BAND_6GHZ:
|
|
/*
|
|
* In the 6 GHz band, the "maximum transmit power level"
|
|
* field in the triplets is reserved, and thus will be
|
|
* zero and we shouldn't use it to control TX power.
|
|
* The actual TX power will be given in the transmit
|
|
* power envelope element instead.
|
|
*/
|
|
return false;
|
|
}
|
|
|
|
/* find channel */
|
|
while (country_ie_len >= 3) {
|
|
u8 first_channel = triplet->chans.first_channel;
|
|
|
|
if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
|
|
goto next;
|
|
|
|
for (i = 0; i < triplet->chans.num_channels; i++) {
|
|
if (first_channel + i * chan_increment == chan) {
|
|
have_chan_pwr = true;
|
|
*chan_pwr = triplet->chans.max_power;
|
|
break;
|
|
}
|
|
}
|
|
if (have_chan_pwr)
|
|
break;
|
|
|
|
next:
|
|
triplet++;
|
|
country_ie_len -= 3;
|
|
}
|
|
|
|
if (have_chan_pwr && pwr_constr_elem)
|
|
*pwr_reduction = *pwr_constr_elem;
|
|
else
|
|
*pwr_reduction = 0;
|
|
|
|
return have_chan_pwr;
|
|
}
|
|
|
|
static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_channel *channel,
|
|
const u8 *cisco_dtpc_ie,
|
|
int *pwr_level)
|
|
{
|
|
/* From practical testing, the first data byte of the DTPC element
|
|
* seems to contain the requested dBm level, and the CLI on Cisco
|
|
* APs clearly state the range is -127 to 127 dBm, which indicates
|
|
* a signed byte, although it seemingly never actually goes negative.
|
|
* The other byte seems to always be zero.
|
|
*/
|
|
*pwr_level = (__s8)cisco_dtpc_ie[4];
|
|
}
|
|
|
|
static u64 ieee80211_handle_pwr_constr(struct ieee80211_link_data *link,
|
|
struct ieee80211_channel *channel,
|
|
struct ieee80211_mgmt *mgmt,
|
|
const u8 *country_ie, u8 country_ie_len,
|
|
const u8 *pwr_constr_ie,
|
|
const u8 *cisco_dtpc_ie)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = link->sdata;
|
|
bool has_80211h_pwr = false, has_cisco_pwr = false;
|
|
int chan_pwr = 0, pwr_reduction_80211h = 0;
|
|
int pwr_level_cisco, pwr_level_80211h;
|
|
int new_ap_level;
|
|
__le16 capab = mgmt->u.probe_resp.capab_info;
|
|
|
|
if (ieee80211_is_s1g_beacon(mgmt->frame_control))
|
|
return 0; /* TODO */
|
|
|
|
if (country_ie &&
|
|
(capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) ||
|
|
capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) {
|
|
has_80211h_pwr = ieee80211_find_80211h_pwr_constr(
|
|
sdata, channel, country_ie, country_ie_len,
|
|
pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h);
|
|
pwr_level_80211h =
|
|
max_t(int, 0, chan_pwr - pwr_reduction_80211h);
|
|
}
|
|
|
|
if (cisco_dtpc_ie) {
|
|
ieee80211_find_cisco_dtpc(
|
|
sdata, channel, cisco_dtpc_ie, &pwr_level_cisco);
|
|
has_cisco_pwr = true;
|
|
}
|
|
|
|
if (!has_80211h_pwr && !has_cisco_pwr)
|
|
return 0;
|
|
|
|
/* If we have both 802.11h and Cisco DTPC, apply both limits
|
|
* by picking the smallest of the two power levels advertised.
|
|
*/
|
|
if (has_80211h_pwr &&
|
|
(!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) {
|
|
new_ap_level = pwr_level_80211h;
|
|
|
|
if (link->ap_power_level == new_ap_level)
|
|
return 0;
|
|
|
|
sdata_dbg(sdata,
|
|
"Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
|
|
pwr_level_80211h, chan_pwr, pwr_reduction_80211h,
|
|
link->u.mgd.bssid);
|
|
} else { /* has_cisco_pwr is always true here. */
|
|
new_ap_level = pwr_level_cisco;
|
|
|
|
if (link->ap_power_level == new_ap_level)
|
|
return 0;
|
|
|
|
sdata_dbg(sdata,
|
|
"Limiting TX power to %d dBm as advertised by %pM\n",
|
|
pwr_level_cisco, link->u.mgd.bssid);
|
|
}
|
|
|
|
link->ap_power_level = new_ap_level;
|
|
if (__ieee80211_recalc_txpower(sdata))
|
|
return BSS_CHANGED_TXPOWER;
|
|
return 0;
|
|
}
|
|
|
|
/* powersave */
|
|
static void ieee80211_enable_ps(struct ieee80211_local *local,
|
|
struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_conf *conf = &local->hw.conf;
|
|
|
|
/*
|
|
* If we are scanning right now then the parameters will
|
|
* take effect when scan finishes.
|
|
*/
|
|
if (local->scanning)
|
|
return;
|
|
|
|
if (conf->dynamic_ps_timeout > 0 &&
|
|
!ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) {
|
|
mod_timer(&local->dynamic_ps_timer, jiffies +
|
|
msecs_to_jiffies(conf->dynamic_ps_timeout));
|
|
} else {
|
|
if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK))
|
|
ieee80211_send_nullfunc(local, sdata, true);
|
|
|
|
if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
|
|
ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
|
|
return;
|
|
|
|
conf->flags |= IEEE80211_CONF_PS;
|
|
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
|
|
}
|
|
}
|
|
|
|
static void ieee80211_change_ps(struct ieee80211_local *local)
|
|
{
|
|
struct ieee80211_conf *conf = &local->hw.conf;
|
|
|
|
if (local->ps_sdata) {
|
|
ieee80211_enable_ps(local, local->ps_sdata);
|
|
} else if (conf->flags & IEEE80211_CONF_PS) {
|
|
conf->flags &= ~IEEE80211_CONF_PS;
|
|
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
|
|
del_timer_sync(&local->dynamic_ps_timer);
|
|
wiphy_work_cancel(local->hw.wiphy,
|
|
&local->dynamic_ps_enable_work);
|
|
}
|
|
}
|
|
|
|
static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *mgd = &sdata->u.mgd;
|
|
struct sta_info *sta = NULL;
|
|
bool authorized = false;
|
|
|
|
if (!mgd->powersave)
|
|
return false;
|
|
|
|
if (mgd->broken_ap)
|
|
return false;
|
|
|
|
if (!mgd->associated)
|
|
return false;
|
|
|
|
if (mgd->flags & IEEE80211_STA_CONNECTION_POLL)
|
|
return false;
|
|
|
|
if (!(local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO) &&
|
|
!sdata->deflink.u.mgd.have_beacon)
|
|
return false;
|
|
|
|
rcu_read_lock();
|
|
sta = sta_info_get(sdata, sdata->vif.cfg.ap_addr);
|
|
if (sta)
|
|
authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
|
|
rcu_read_unlock();
|
|
|
|
return authorized;
|
|
}
|
|
|
|
/* need to hold RTNL or interface lock */
|
|
void ieee80211_recalc_ps(struct ieee80211_local *local)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata, *found = NULL;
|
|
int count = 0;
|
|
int timeout;
|
|
|
|
if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS) ||
|
|
ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) {
|
|
local->ps_sdata = NULL;
|
|
return;
|
|
}
|
|
|
|
list_for_each_entry(sdata, &local->interfaces, list) {
|
|
if (!ieee80211_sdata_running(sdata))
|
|
continue;
|
|
if (sdata->vif.type == NL80211_IFTYPE_AP) {
|
|
/* If an AP vif is found, then disable PS
|
|
* by setting the count to zero thereby setting
|
|
* ps_sdata to NULL.
|
|
*/
|
|
count = 0;
|
|
break;
|
|
}
|
|
if (sdata->vif.type != NL80211_IFTYPE_STATION)
|
|
continue;
|
|
found = sdata;
|
|
count++;
|
|
}
|
|
|
|
if (count == 1 && ieee80211_powersave_allowed(found)) {
|
|
u8 dtimper = found->deflink.u.mgd.dtim_period;
|
|
|
|
timeout = local->dynamic_ps_forced_timeout;
|
|
if (timeout < 0)
|
|
timeout = 100;
|
|
local->hw.conf.dynamic_ps_timeout = timeout;
|
|
|
|
/* If the TIM IE is invalid, pretend the value is 1 */
|
|
if (!dtimper)
|
|
dtimper = 1;
|
|
|
|
local->hw.conf.ps_dtim_period = dtimper;
|
|
local->ps_sdata = found;
|
|
} else {
|
|
local->ps_sdata = NULL;
|
|
}
|
|
|
|
ieee80211_change_ps(local);
|
|
}
|
|
|
|
void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
bool ps_allowed = ieee80211_powersave_allowed(sdata);
|
|
|
|
if (sdata->vif.cfg.ps != ps_allowed) {
|
|
sdata->vif.cfg.ps = ps_allowed;
|
|
ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_PS);
|
|
}
|
|
}
|
|
|
|
void ieee80211_dynamic_ps_disable_work(struct wiphy *wiphy,
|
|
struct wiphy_work *work)
|
|
{
|
|
struct ieee80211_local *local =
|
|
container_of(work, struct ieee80211_local,
|
|
dynamic_ps_disable_work);
|
|
|
|
if (local->hw.conf.flags & IEEE80211_CONF_PS) {
|
|
local->hw.conf.flags &= ~IEEE80211_CONF_PS;
|
|
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
|
|
}
|
|
|
|
ieee80211_wake_queues_by_reason(&local->hw,
|
|
IEEE80211_MAX_QUEUE_MAP,
|
|
IEEE80211_QUEUE_STOP_REASON_PS,
|
|
false);
|
|
}
|
|
|
|
void ieee80211_dynamic_ps_enable_work(struct wiphy *wiphy,
|
|
struct wiphy_work *work)
|
|
{
|
|
struct ieee80211_local *local =
|
|
container_of(work, struct ieee80211_local,
|
|
dynamic_ps_enable_work);
|
|
struct ieee80211_sub_if_data *sdata = local->ps_sdata;
|
|
struct ieee80211_if_managed *ifmgd;
|
|
unsigned long flags;
|
|
int q;
|
|
|
|
/* can only happen when PS was just disabled anyway */
|
|
if (!sdata)
|
|
return;
|
|
|
|
ifmgd = &sdata->u.mgd;
|
|
|
|
if (local->hw.conf.flags & IEEE80211_CONF_PS)
|
|
return;
|
|
|
|
if (local->hw.conf.dynamic_ps_timeout > 0) {
|
|
/* don't enter PS if TX frames are pending */
|
|
if (drv_tx_frames_pending(local)) {
|
|
mod_timer(&local->dynamic_ps_timer, jiffies +
|
|
msecs_to_jiffies(
|
|
local->hw.conf.dynamic_ps_timeout));
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* transmission can be stopped by others which leads to
|
|
* dynamic_ps_timer expiry. Postpone the ps timer if it
|
|
* is not the actual idle state.
|
|
*/
|
|
spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
|
|
for (q = 0; q < local->hw.queues; q++) {
|
|
if (local->queue_stop_reasons[q]) {
|
|
spin_unlock_irqrestore(&local->queue_stop_reason_lock,
|
|
flags);
|
|
mod_timer(&local->dynamic_ps_timer, jiffies +
|
|
msecs_to_jiffies(
|
|
local->hw.conf.dynamic_ps_timeout));
|
|
return;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
|
|
}
|
|
|
|
if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
|
|
!(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
|
|
if (drv_tx_frames_pending(local)) {
|
|
mod_timer(&local->dynamic_ps_timer, jiffies +
|
|
msecs_to_jiffies(
|
|
local->hw.conf.dynamic_ps_timeout));
|
|
} else {
|
|
ieee80211_send_nullfunc(local, sdata, true);
|
|
/* Flush to get the tx status of nullfunc frame */
|
|
ieee80211_flush_queues(local, sdata, false);
|
|
}
|
|
}
|
|
|
|
if (!(ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) &&
|
|
ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) ||
|
|
(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
|
|
ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
|
|
local->hw.conf.flags |= IEEE80211_CONF_PS;
|
|
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
|
|
}
|
|
}
|
|
|
|
void ieee80211_dynamic_ps_timer(struct timer_list *t)
|
|
{
|
|
struct ieee80211_local *local = from_timer(local, t, dynamic_ps_timer);
|
|
|
|
wiphy_work_queue(local->hw.wiphy, &local->dynamic_ps_enable_work);
|
|
}
|
|
|
|
void ieee80211_dfs_cac_timer_work(struct wiphy *wiphy, struct wiphy_work *work)
|
|
{
|
|
struct ieee80211_link_data *link =
|
|
container_of(work, struct ieee80211_link_data,
|
|
dfs_cac_timer_work.work);
|
|
struct cfg80211_chan_def chandef = link->conf->chandef;
|
|
struct ieee80211_sub_if_data *sdata = link->sdata;
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
if (sdata->wdev.cac_started) {
|
|
ieee80211_link_release_channel(link);
|
|
cfg80211_cac_event(sdata->dev, &chandef,
|
|
NL80211_RADAR_CAC_FINISHED,
|
|
GFP_KERNEL);
|
|
}
|
|
}
|
|
|
|
static bool
|
|
__ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
bool ret = false;
|
|
int ac;
|
|
|
|
if (local->hw.queues < IEEE80211_NUM_ACS)
|
|
return false;
|
|
|
|
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
|
|
struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
|
|
int non_acm_ac;
|
|
unsigned long now = jiffies;
|
|
|
|
if (tx_tspec->action == TX_TSPEC_ACTION_NONE &&
|
|
tx_tspec->admitted_time &&
|
|
time_after(now, tx_tspec->time_slice_start + HZ)) {
|
|
tx_tspec->consumed_tx_time = 0;
|
|
tx_tspec->time_slice_start = now;
|
|
|
|
if (tx_tspec->downgraded)
|
|
tx_tspec->action =
|
|
TX_TSPEC_ACTION_STOP_DOWNGRADE;
|
|
}
|
|
|
|
switch (tx_tspec->action) {
|
|
case TX_TSPEC_ACTION_STOP_DOWNGRADE:
|
|
/* take the original parameters */
|
|
if (drv_conf_tx(local, &sdata->deflink, ac,
|
|
&sdata->deflink.tx_conf[ac]))
|
|
link_err(&sdata->deflink,
|
|
"failed to set TX queue parameters for queue %d\n",
|
|
ac);
|
|
tx_tspec->action = TX_TSPEC_ACTION_NONE;
|
|
tx_tspec->downgraded = false;
|
|
ret = true;
|
|
break;
|
|
case TX_TSPEC_ACTION_DOWNGRADE:
|
|
if (time_after(now, tx_tspec->time_slice_start + HZ)) {
|
|
tx_tspec->action = TX_TSPEC_ACTION_NONE;
|
|
ret = true;
|
|
break;
|
|
}
|
|
/* downgrade next lower non-ACM AC */
|
|
for (non_acm_ac = ac + 1;
|
|
non_acm_ac < IEEE80211_NUM_ACS;
|
|
non_acm_ac++)
|
|
if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac)))
|
|
break;
|
|
/* Usually the loop will result in using BK even if it
|
|
* requires admission control, but such a configuration
|
|
* makes no sense and we have to transmit somehow - the
|
|
* AC selection does the same thing.
|
|
* If we started out trying to downgrade from BK, then
|
|
* the extra condition here might be needed.
|
|
*/
|
|
if (non_acm_ac >= IEEE80211_NUM_ACS)
|
|
non_acm_ac = IEEE80211_AC_BK;
|
|
if (drv_conf_tx(local, &sdata->deflink, ac,
|
|
&sdata->deflink.tx_conf[non_acm_ac]))
|
|
link_err(&sdata->deflink,
|
|
"failed to set TX queue parameters for queue %d\n",
|
|
ac);
|
|
tx_tspec->action = TX_TSPEC_ACTION_NONE;
|
|
ret = true;
|
|
wiphy_delayed_work_queue(local->hw.wiphy,
|
|
&ifmgd->tx_tspec_wk,
|
|
tx_tspec->time_slice_start +
|
|
HZ - now + 1);
|
|
break;
|
|
case TX_TSPEC_ACTION_NONE:
|
|
/* nothing now */
|
|
break;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
if (__ieee80211_sta_handle_tspec_ac_params(sdata))
|
|
ieee80211_link_info_change_notify(sdata, &sdata->deflink,
|
|
BSS_CHANGED_QOS);
|
|
}
|
|
|
|
static void ieee80211_sta_handle_tspec_ac_params_wk(struct wiphy *wiphy,
|
|
struct wiphy_work *work)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata;
|
|
|
|
sdata = container_of(work, struct ieee80211_sub_if_data,
|
|
u.mgd.tx_tspec_wk.work);
|
|
ieee80211_sta_handle_tspec_ac_params(sdata);
|
|
}
|
|
|
|
void ieee80211_mgd_set_link_qos_params(struct ieee80211_link_data *link)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = link->sdata;
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct ieee80211_tx_queue_params *params = link->tx_conf;
|
|
u8 ac;
|
|
|
|
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
|
|
mlme_dbg(sdata,
|
|
"WMM AC=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n",
|
|
ac, params[ac].acm,
|
|
params[ac].aifs, params[ac].cw_min, params[ac].cw_max,
|
|
params[ac].txop, params[ac].uapsd,
|
|
ifmgd->tx_tspec[ac].downgraded);
|
|
if (!ifmgd->tx_tspec[ac].downgraded &&
|
|
drv_conf_tx(local, link, ac, ¶ms[ac]))
|
|
link_err(link,
|
|
"failed to set TX queue parameters for AC %d\n",
|
|
ac);
|
|
}
|
|
}
|
|
|
|
/* MLME */
|
|
static bool
|
|
ieee80211_sta_wmm_params(struct ieee80211_local *local,
|
|
struct ieee80211_link_data *link,
|
|
const u8 *wmm_param, size_t wmm_param_len,
|
|
const struct ieee80211_mu_edca_param_set *mu_edca)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = link->sdata;
|
|
struct ieee80211_tx_queue_params params[IEEE80211_NUM_ACS];
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
size_t left;
|
|
int count, mu_edca_count, ac;
|
|
const u8 *pos;
|
|
u8 uapsd_queues = 0;
|
|
|
|
if (!local->ops->conf_tx)
|
|
return false;
|
|
|
|
if (local->hw.queues < IEEE80211_NUM_ACS)
|
|
return false;
|
|
|
|
if (!wmm_param)
|
|
return false;
|
|
|
|
if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
|
|
return false;
|
|
|
|
if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
|
|
uapsd_queues = ifmgd->uapsd_queues;
|
|
|
|
count = wmm_param[6] & 0x0f;
|
|
/* -1 is the initial value of ifmgd->mu_edca_last_param_set.
|
|
* if mu_edca was preset before and now it disappeared tell
|
|
* the driver about it.
|
|
*/
|
|
mu_edca_count = mu_edca ? mu_edca->mu_qos_info & 0x0f : -1;
|
|
if (count == link->u.mgd.wmm_last_param_set &&
|
|
mu_edca_count == link->u.mgd.mu_edca_last_param_set)
|
|
return false;
|
|
link->u.mgd.wmm_last_param_set = count;
|
|
link->u.mgd.mu_edca_last_param_set = mu_edca_count;
|
|
|
|
pos = wmm_param + 8;
|
|
left = wmm_param_len - 8;
|
|
|
|
memset(¶ms, 0, sizeof(params));
|
|
|
|
sdata->wmm_acm = 0;
|
|
for (; left >= 4; left -= 4, pos += 4) {
|
|
int aci = (pos[0] >> 5) & 0x03;
|
|
int acm = (pos[0] >> 4) & 0x01;
|
|
bool uapsd = false;
|
|
|
|
switch (aci) {
|
|
case 1: /* AC_BK */
|
|
ac = IEEE80211_AC_BK;
|
|
if (acm)
|
|
sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */
|
|
if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
|
|
uapsd = true;
|
|
params[ac].mu_edca = !!mu_edca;
|
|
if (mu_edca)
|
|
params[ac].mu_edca_param_rec = mu_edca->ac_bk;
|
|
break;
|
|
case 2: /* AC_VI */
|
|
ac = IEEE80211_AC_VI;
|
|
if (acm)
|
|
sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
|
|
if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
|
|
uapsd = true;
|
|
params[ac].mu_edca = !!mu_edca;
|
|
if (mu_edca)
|
|
params[ac].mu_edca_param_rec = mu_edca->ac_vi;
|
|
break;
|
|
case 3: /* AC_VO */
|
|
ac = IEEE80211_AC_VO;
|
|
if (acm)
|
|
sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
|
|
if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
|
|
uapsd = true;
|
|
params[ac].mu_edca = !!mu_edca;
|
|
if (mu_edca)
|
|
params[ac].mu_edca_param_rec = mu_edca->ac_vo;
|
|
break;
|
|
case 0: /* AC_BE */
|
|
default:
|
|
ac = IEEE80211_AC_BE;
|
|
if (acm)
|
|
sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
|
|
if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
|
|
uapsd = true;
|
|
params[ac].mu_edca = !!mu_edca;
|
|
if (mu_edca)
|
|
params[ac].mu_edca_param_rec = mu_edca->ac_be;
|
|
break;
|
|
}
|
|
|
|
params[ac].aifs = pos[0] & 0x0f;
|
|
|
|
if (params[ac].aifs < 2) {
|
|
link_info(link,
|
|
"AP has invalid WMM params (AIFSN=%d for ACI %d), will use 2\n",
|
|
params[ac].aifs, aci);
|
|
params[ac].aifs = 2;
|
|
}
|
|
params[ac].cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
|
|
params[ac].cw_min = ecw2cw(pos[1] & 0x0f);
|
|
params[ac].txop = get_unaligned_le16(pos + 2);
|
|
params[ac].acm = acm;
|
|
params[ac].uapsd = uapsd;
|
|
|
|
if (params[ac].cw_min == 0 ||
|
|
params[ac].cw_min > params[ac].cw_max) {
|
|
link_info(link,
|
|
"AP has invalid WMM params (CWmin/max=%d/%d for ACI %d), using defaults\n",
|
|
params[ac].cw_min, params[ac].cw_max, aci);
|
|
return false;
|
|
}
|
|
ieee80211_regulatory_limit_wmm_params(sdata, ¶ms[ac], ac);
|
|
}
|
|
|
|
/* WMM specification requires all 4 ACIs. */
|
|
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
|
|
if (params[ac].cw_min == 0) {
|
|
link_info(link,
|
|
"AP has invalid WMM params (missing AC %d), using defaults\n",
|
|
ac);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
|
|
link->tx_conf[ac] = params[ac];
|
|
|
|
ieee80211_mgd_set_link_qos_params(link);
|
|
|
|
/* enable WMM or activate new settings */
|
|
link->conf->qos = true;
|
|
return true;
|
|
}
|
|
|
|
static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL;
|
|
ieee80211_run_deferred_scan(sdata->local);
|
|
}
|
|
|
|
static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
__ieee80211_stop_poll(sdata);
|
|
}
|
|
|
|
static u64 ieee80211_handle_bss_capability(struct ieee80211_link_data *link,
|
|
u16 capab, bool erp_valid, u8 erp)
|
|
{
|
|
struct ieee80211_bss_conf *bss_conf = link->conf;
|
|
struct ieee80211_supported_band *sband;
|
|
u64 changed = 0;
|
|
bool use_protection;
|
|
bool use_short_preamble;
|
|
bool use_short_slot;
|
|
|
|
sband = ieee80211_get_link_sband(link);
|
|
if (!sband)
|
|
return changed;
|
|
|
|
if (erp_valid) {
|
|
use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
|
|
use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
|
|
} else {
|
|
use_protection = false;
|
|
use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
|
|
}
|
|
|
|
use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
|
|
if (sband->band == NL80211_BAND_5GHZ ||
|
|
sband->band == NL80211_BAND_6GHZ)
|
|
use_short_slot = true;
|
|
|
|
if (use_protection != bss_conf->use_cts_prot) {
|
|
bss_conf->use_cts_prot = use_protection;
|
|
changed |= BSS_CHANGED_ERP_CTS_PROT;
|
|
}
|
|
|
|
if (use_short_preamble != bss_conf->use_short_preamble) {
|
|
bss_conf->use_short_preamble = use_short_preamble;
|
|
changed |= BSS_CHANGED_ERP_PREAMBLE;
|
|
}
|
|
|
|
if (use_short_slot != bss_conf->use_short_slot) {
|
|
bss_conf->use_short_slot = use_short_slot;
|
|
changed |= BSS_CHANGED_ERP_SLOT;
|
|
}
|
|
|
|
return changed;
|
|
}
|
|
|
|
static u64 ieee80211_link_set_associated(struct ieee80211_link_data *link,
|
|
struct cfg80211_bss *cbss)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = link->sdata;
|
|
struct ieee80211_bss_conf *bss_conf = link->conf;
|
|
struct ieee80211_bss *bss = (void *)cbss->priv;
|
|
u64 changed = BSS_CHANGED_QOS;
|
|
|
|
/* not really used in MLO */
|
|
sdata->u.mgd.beacon_timeout =
|
|
usecs_to_jiffies(ieee80211_tu_to_usec(beacon_loss_count *
|
|
bss_conf->beacon_int));
|
|
|
|
changed |= ieee80211_handle_bss_capability(link,
|
|
bss_conf->assoc_capability,
|
|
bss->has_erp_value,
|
|
bss->erp_value);
|
|
|
|
ieee80211_check_rate_mask(link);
|
|
|
|
link->u.mgd.bss = cbss;
|
|
memcpy(link->u.mgd.bssid, cbss->bssid, ETH_ALEN);
|
|
|
|
if (sdata->vif.p2p ||
|
|
sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
|
|
const struct cfg80211_bss_ies *ies;
|
|
|
|
rcu_read_lock();
|
|
ies = rcu_dereference(cbss->ies);
|
|
if (ies) {
|
|
int ret;
|
|
|
|
ret = cfg80211_get_p2p_attr(
|
|
ies->data, ies->len,
|
|
IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
|
|
(u8 *) &bss_conf->p2p_noa_attr,
|
|
sizeof(bss_conf->p2p_noa_attr));
|
|
if (ret >= 2) {
|
|
link->u.mgd.p2p_noa_index =
|
|
bss_conf->p2p_noa_attr.index;
|
|
changed |= BSS_CHANGED_P2P_PS;
|
|
}
|
|
}
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
if (link->u.mgd.have_beacon) {
|
|
bss_conf->beacon_rate = bss->beacon_rate;
|
|
changed |= BSS_CHANGED_BEACON_INFO;
|
|
} else {
|
|
bss_conf->beacon_rate = NULL;
|
|
}
|
|
|
|
/* Tell the driver to monitor connection quality (if supported) */
|
|
if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
|
|
bss_conf->cqm_rssi_thold)
|
|
changed |= BSS_CHANGED_CQM;
|
|
|
|
return changed;
|
|
}
|
|
|
|
static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_mgd_assoc_data *assoc_data,
|
|
u64 changed[IEEE80211_MLD_MAX_NUM_LINKS])
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_vif_cfg *vif_cfg = &sdata->vif.cfg;
|
|
u64 vif_changed = BSS_CHANGED_ASSOC;
|
|
unsigned int link_id;
|
|
|
|
lockdep_assert_wiphy(local->hw.wiphy);
|
|
|
|
sdata->u.mgd.associated = true;
|
|
|
|
for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
|
|
struct cfg80211_bss *cbss = assoc_data->link[link_id].bss;
|
|
struct ieee80211_link_data *link;
|
|
|
|
if (!cbss ||
|
|
assoc_data->link[link_id].status != WLAN_STATUS_SUCCESS)
|
|
continue;
|
|
|
|
if (ieee80211_vif_is_mld(&sdata->vif) &&
|
|
!(ieee80211_vif_usable_links(&sdata->vif) & BIT(link_id)))
|
|
continue;
|
|
|
|
link = sdata_dereference(sdata->link[link_id], sdata);
|
|
if (WARN_ON(!link))
|
|
return;
|
|
|
|
changed[link_id] |= ieee80211_link_set_associated(link, cbss);
|
|
}
|
|
|
|
/* just to be sure */
|
|
ieee80211_stop_poll(sdata);
|
|
|
|
ieee80211_led_assoc(local, 1);
|
|
|
|
vif_cfg->assoc = 1;
|
|
|
|
/* Enable ARP filtering */
|
|
if (vif_cfg->arp_addr_cnt)
|
|
vif_changed |= BSS_CHANGED_ARP_FILTER;
|
|
|
|
if (ieee80211_vif_is_mld(&sdata->vif)) {
|
|
for (link_id = 0;
|
|
link_id < IEEE80211_MLD_MAX_NUM_LINKS;
|
|
link_id++) {
|
|
struct ieee80211_link_data *link;
|
|
struct cfg80211_bss *cbss = assoc_data->link[link_id].bss;
|
|
|
|
if (!cbss ||
|
|
!(BIT(link_id) &
|
|
ieee80211_vif_usable_links(&sdata->vif)) ||
|
|
assoc_data->link[link_id].status != WLAN_STATUS_SUCCESS)
|
|
continue;
|
|
|
|
link = sdata_dereference(sdata->link[link_id], sdata);
|
|
if (WARN_ON(!link))
|
|
return;
|
|
|
|
ieee80211_link_info_change_notify(sdata, link,
|
|
changed[link_id]);
|
|
|
|
ieee80211_recalc_smps(sdata, link);
|
|
}
|
|
|
|
ieee80211_vif_cfg_change_notify(sdata, vif_changed);
|
|
} else {
|
|
ieee80211_bss_info_change_notify(sdata,
|
|
vif_changed | changed[0]);
|
|
}
|
|
|
|
ieee80211_recalc_ps(local);
|
|
|
|
/* leave this here to not change ordering in non-MLO cases */
|
|
if (!ieee80211_vif_is_mld(&sdata->vif))
|
|
ieee80211_recalc_smps(sdata, &sdata->deflink);
|
|
ieee80211_recalc_ps_vif(sdata);
|
|
|
|
netif_carrier_on(sdata->dev);
|
|
}
|
|
|
|
static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
|
|
u16 stype, u16 reason, bool tx,
|
|
u8 *frame_buf)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct ieee80211_local *local = sdata->local;
|
|
unsigned int link_id;
|
|
u64 changed = 0;
|
|
struct ieee80211_prep_tx_info info = {
|
|
.subtype = stype,
|
|
};
|
|
|
|
lockdep_assert_wiphy(local->hw.wiphy);
|
|
|
|
if (WARN_ON_ONCE(tx && !frame_buf))
|
|
return;
|
|
|
|
if (WARN_ON(!ifmgd->associated))
|
|
return;
|
|
|
|
ieee80211_stop_poll(sdata);
|
|
|
|
ifmgd->associated = false;
|
|
|
|
/* other links will be destroyed */
|
|
sdata->deflink.u.mgd.bss = NULL;
|
|
|
|
netif_carrier_off(sdata->dev);
|
|
|
|
/*
|
|
* if we want to get out of ps before disassoc (why?) we have
|
|
* to do it before sending disassoc, as otherwise the null-packet
|
|
* won't be valid.
|
|
*/
|
|
if (local->hw.conf.flags & IEEE80211_CONF_PS) {
|
|
local->hw.conf.flags &= ~IEEE80211_CONF_PS;
|
|
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
|
|
}
|
|
local->ps_sdata = NULL;
|
|
|
|
/* disable per-vif ps */
|
|
ieee80211_recalc_ps_vif(sdata);
|
|
|
|
/* make sure ongoing transmission finishes */
|
|
synchronize_net();
|
|
|
|
/*
|
|
* drop any frame before deauth/disassoc, this can be data or
|
|
* management frame. Since we are disconnecting, we should not
|
|
* insist sending these frames which can take time and delay
|
|
* the disconnection and possible the roaming.
|
|
*/
|
|
if (tx)
|
|
ieee80211_flush_queues(local, sdata, true);
|
|
|
|
/* deauthenticate/disassociate now */
|
|
if (tx || frame_buf) {
|
|
/*
|
|
* In multi channel scenarios guarantee that the virtual
|
|
* interface is granted immediate airtime to transmit the
|
|
* deauthentication frame by calling mgd_prepare_tx, if the
|
|
* driver requested so.
|
|
*/
|
|
if (ieee80211_hw_check(&local->hw, DEAUTH_NEED_MGD_TX_PREP)) {
|
|
for (link_id = 0; link_id < ARRAY_SIZE(sdata->link);
|
|
link_id++) {
|
|
struct ieee80211_link_data *link;
|
|
|
|
link = sdata_dereference(sdata->link[link_id],
|
|
sdata);
|
|
if (!link)
|
|
continue;
|
|
if (link->u.mgd.have_beacon)
|
|
break;
|
|
}
|
|
if (link_id == IEEE80211_MLD_MAX_NUM_LINKS) {
|
|
info.link_id = ffs(sdata->vif.active_links) - 1;
|
|
drv_mgd_prepare_tx(sdata->local, sdata, &info);
|
|
}
|
|
}
|
|
|
|
ieee80211_send_deauth_disassoc(sdata, sdata->vif.cfg.ap_addr,
|
|
sdata->vif.cfg.ap_addr, stype,
|
|
reason, tx, frame_buf);
|
|
}
|
|
|
|
/* flush out frame - make sure the deauth was actually sent */
|
|
if (tx)
|
|
ieee80211_flush_queues(local, sdata, false);
|
|
|
|
drv_mgd_complete_tx(sdata->local, sdata, &info);
|
|
|
|
/* clear AP addr only after building the needed mgmt frames */
|
|
eth_zero_addr(sdata->deflink.u.mgd.bssid);
|
|
eth_zero_addr(sdata->vif.cfg.ap_addr);
|
|
|
|
sdata->vif.cfg.ssid_len = 0;
|
|
|
|
/* remove AP and TDLS peers */
|
|
sta_info_flush(sdata);
|
|
|
|
/* finally reset all BSS / config parameters */
|
|
if (!ieee80211_vif_is_mld(&sdata->vif))
|
|
changed |= ieee80211_reset_erp_info(sdata);
|
|
|
|
ieee80211_led_assoc(local, 0);
|
|
changed |= BSS_CHANGED_ASSOC;
|
|
sdata->vif.cfg.assoc = false;
|
|
|
|
sdata->deflink.u.mgd.p2p_noa_index = -1;
|
|
memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
|
|
sizeof(sdata->vif.bss_conf.p2p_noa_attr));
|
|
|
|
/* on the next assoc, re-program HT/VHT parameters */
|
|
memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
|
|
memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
|
|
memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa));
|
|
memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask));
|
|
|
|
/*
|
|
* reset MU-MIMO ownership and group data in default link,
|
|
* if used, other links are destroyed
|
|
*/
|
|
memset(sdata->vif.bss_conf.mu_group.membership, 0,
|
|
sizeof(sdata->vif.bss_conf.mu_group.membership));
|
|
memset(sdata->vif.bss_conf.mu_group.position, 0,
|
|
sizeof(sdata->vif.bss_conf.mu_group.position));
|
|
if (!ieee80211_vif_is_mld(&sdata->vif))
|
|
changed |= BSS_CHANGED_MU_GROUPS;
|
|
sdata->vif.bss_conf.mu_mimo_owner = false;
|
|
|
|
sdata->deflink.ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
|
|
|
|
del_timer_sync(&local->dynamic_ps_timer);
|
|
wiphy_work_cancel(local->hw.wiphy, &local->dynamic_ps_enable_work);
|
|
|
|
/* Disable ARP filtering */
|
|
if (sdata->vif.cfg.arp_addr_cnt)
|
|
changed |= BSS_CHANGED_ARP_FILTER;
|
|
|
|
sdata->vif.bss_conf.qos = false;
|
|
if (!ieee80211_vif_is_mld(&sdata->vif)) {
|
|
changed |= BSS_CHANGED_QOS;
|
|
/* The BSSID (not really interesting) and HT changed */
|
|
changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
|
|
ieee80211_bss_info_change_notify(sdata, changed);
|
|
} else {
|
|
ieee80211_vif_cfg_change_notify(sdata, changed);
|
|
}
|
|
|
|
/* disassociated - set to defaults now */
|
|
ieee80211_set_wmm_default(&sdata->deflink, false, false);
|
|
|
|
del_timer_sync(&sdata->u.mgd.conn_mon_timer);
|
|
del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
|
|
del_timer_sync(&sdata->u.mgd.timer);
|
|
|
|
sdata->vif.bss_conf.dtim_period = 0;
|
|
sdata->vif.bss_conf.beacon_rate = NULL;
|
|
|
|
sdata->deflink.u.mgd.have_beacon = false;
|
|
sdata->deflink.u.mgd.tracking_signal_avg = false;
|
|
sdata->deflink.u.mgd.disable_wmm_tracking = false;
|
|
|
|
ifmgd->flags = 0;
|
|
sdata->deflink.u.mgd.conn_flags = 0;
|
|
|
|
for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) {
|
|
struct ieee80211_link_data *link;
|
|
|
|
link = sdata_dereference(sdata->link[link_id], sdata);
|
|
if (!link)
|
|
continue;
|
|
ieee80211_link_release_channel(link);
|
|
}
|
|
|
|
sdata->vif.bss_conf.csa_active = false;
|
|
sdata->deflink.u.mgd.csa_waiting_bcn = false;
|
|
sdata->deflink.u.mgd.csa_ignored_same_chan = false;
|
|
if (sdata->deflink.csa_block_tx) {
|
|
ieee80211_wake_vif_queues(local, sdata,
|
|
IEEE80211_QUEUE_STOP_REASON_CSA);
|
|
sdata->deflink.csa_block_tx = false;
|
|
}
|
|
|
|
/* existing TX TSPEC sessions no longer exist */
|
|
memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec));
|
|
wiphy_delayed_work_cancel(local->hw.wiphy, &ifmgd->tx_tspec_wk);
|
|
|
|
sdata->vif.bss_conf.pwr_reduction = 0;
|
|
sdata->vif.bss_conf.tx_pwr_env_num = 0;
|
|
memset(sdata->vif.bss_conf.tx_pwr_env, 0,
|
|
sizeof(sdata->vif.bss_conf.tx_pwr_env));
|
|
|
|
memset(&sdata->u.mgd.ttlm_info, 0,
|
|
sizeof(sdata->u.mgd.ttlm_info));
|
|
wiphy_delayed_work_cancel(sdata->local->hw.wiphy, &ifmgd->ttlm_work);
|
|
ieee80211_vif_set_links(sdata, 0, 0);
|
|
}
|
|
|
|
static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct ieee80211_local *local = sdata->local;
|
|
|
|
lockdep_assert_wiphy(local->hw.wiphy);
|
|
|
|
if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL))
|
|
return;
|
|
|
|
__ieee80211_stop_poll(sdata);
|
|
|
|
ieee80211_recalc_ps(local);
|
|
|
|
if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
|
|
return;
|
|
|
|
/*
|
|
* We've received a probe response, but are not sure whether
|
|
* we have or will be receiving any beacons or data, so let's
|
|
* schedule the timers again, just in case.
|
|
*/
|
|
ieee80211_sta_reset_beacon_monitor(sdata);
|
|
|
|
mod_timer(&ifmgd->conn_mon_timer,
|
|
round_jiffies_up(jiffies +
|
|
IEEE80211_CONNECTION_IDLE_TIME));
|
|
}
|
|
|
|
static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_hdr *hdr,
|
|
u16 tx_time)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
u16 tid;
|
|
int ac;
|
|
struct ieee80211_sta_tx_tspec *tx_tspec;
|
|
unsigned long now = jiffies;
|
|
|
|
if (!ieee80211_is_data_qos(hdr->frame_control))
|
|
return;
|
|
|
|
tid = ieee80211_get_tid(hdr);
|
|
ac = ieee80211_ac_from_tid(tid);
|
|
tx_tspec = &ifmgd->tx_tspec[ac];
|
|
|
|
if (likely(!tx_tspec->admitted_time))
|
|
return;
|
|
|
|
if (time_after(now, tx_tspec->time_slice_start + HZ)) {
|
|
tx_tspec->consumed_tx_time = 0;
|
|
tx_tspec->time_slice_start = now;
|
|
|
|
if (tx_tspec->downgraded) {
|
|
tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
|
|
wiphy_delayed_work_queue(sdata->local->hw.wiphy,
|
|
&ifmgd->tx_tspec_wk, 0);
|
|
}
|
|
}
|
|
|
|
if (tx_tspec->downgraded)
|
|
return;
|
|
|
|
tx_tspec->consumed_tx_time += tx_time;
|
|
|
|
if (tx_tspec->consumed_tx_time >= tx_tspec->admitted_time) {
|
|
tx_tspec->downgraded = true;
|
|
tx_tspec->action = TX_TSPEC_ACTION_DOWNGRADE;
|
|
wiphy_delayed_work_queue(sdata->local->hw.wiphy,
|
|
&ifmgd->tx_tspec_wk, 0);
|
|
}
|
|
}
|
|
|
|
void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_hdr *hdr, bool ack, u16 tx_time)
|
|
{
|
|
ieee80211_sta_tx_wmm_ac_notify(sdata, hdr, tx_time);
|
|
|
|
if (!ieee80211_is_any_nullfunc(hdr->frame_control) ||
|
|
!sdata->u.mgd.probe_send_count)
|
|
return;
|
|
|
|
if (ack)
|
|
sdata->u.mgd.probe_send_count = 0;
|
|
else
|
|
sdata->u.mgd.nullfunc_failed = true;
|
|
wiphy_work_queue(sdata->local->hw.wiphy, &sdata->work);
|
|
}
|
|
|
|
static void ieee80211_mlme_send_probe_req(struct ieee80211_sub_if_data *sdata,
|
|
const u8 *src, const u8 *dst,
|
|
const u8 *ssid, size_t ssid_len,
|
|
struct ieee80211_channel *channel)
|
|
{
|
|
struct sk_buff *skb;
|
|
|
|
skb = ieee80211_build_probe_req(sdata, src, dst, (u32)-1, channel,
|
|
ssid, ssid_len, NULL, 0,
|
|
IEEE80211_PROBE_FLAG_DIRECTED);
|
|
if (skb)
|
|
ieee80211_tx_skb(sdata, skb);
|
|
}
|
|
|
|
static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
u8 *dst = sdata->vif.cfg.ap_addr;
|
|
u8 unicast_limit = max(1, max_probe_tries - 3);
|
|
struct sta_info *sta;
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
if (WARN_ON(ieee80211_vif_is_mld(&sdata->vif)))
|
|
return;
|
|
|
|
/*
|
|
* Try sending broadcast probe requests for the last three
|
|
* probe requests after the first ones failed since some
|
|
* buggy APs only support broadcast probe requests.
|
|
*/
|
|
if (ifmgd->probe_send_count >= unicast_limit)
|
|
dst = NULL;
|
|
|
|
/*
|
|
* When the hardware reports an accurate Tx ACK status, it's
|
|
* better to send a nullfunc frame instead of a probe request,
|
|
* as it will kick us off the AP quickly if we aren't associated
|
|
* anymore. The timeout will be reset if the frame is ACKed by
|
|
* the AP.
|
|
*/
|
|
ifmgd->probe_send_count++;
|
|
|
|
if (dst) {
|
|
sta = sta_info_get(sdata, dst);
|
|
if (!WARN_ON(!sta))
|
|
ieee80211_check_fast_rx(sta);
|
|
}
|
|
|
|
if (ieee80211_hw_check(&sdata->local->hw, REPORTS_TX_ACK_STATUS)) {
|
|
ifmgd->nullfunc_failed = false;
|
|
ieee80211_send_nullfunc(sdata->local, sdata, false);
|
|
} else {
|
|
ieee80211_mlme_send_probe_req(sdata, sdata->vif.addr, dst,
|
|
sdata->vif.cfg.ssid,
|
|
sdata->vif.cfg.ssid_len,
|
|
sdata->deflink.u.mgd.bss->channel);
|
|
}
|
|
|
|
ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
|
|
run_again(sdata, ifmgd->probe_timeout);
|
|
}
|
|
|
|
static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
|
|
bool beacon)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
bool already = false;
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
if (WARN_ON_ONCE(ieee80211_vif_is_mld(&sdata->vif)))
|
|
return;
|
|
|
|
if (!ieee80211_sdata_running(sdata))
|
|
return;
|
|
|
|
if (!ifmgd->associated)
|
|
return;
|
|
|
|
if (sdata->local->tmp_channel || sdata->local->scanning)
|
|
return;
|
|
|
|
if (sdata->local->suspending) {
|
|
/* reschedule after resume */
|
|
ieee80211_reset_ap_probe(sdata);
|
|
return;
|
|
}
|
|
|
|
if (beacon) {
|
|
mlme_dbg_ratelimited(sdata,
|
|
"detected beacon loss from AP (missed %d beacons) - probing\n",
|
|
beacon_loss_count);
|
|
|
|
ieee80211_cqm_beacon_loss_notify(&sdata->vif, GFP_KERNEL);
|
|
}
|
|
|
|
/*
|
|
* The driver/our work has already reported this event or the
|
|
* connection monitoring has kicked in and we have already sent
|
|
* a probe request. Or maybe the AP died and the driver keeps
|
|
* reporting until we disassociate...
|
|
*
|
|
* In either case we have to ignore the current call to this
|
|
* function (except for setting the correct probe reason bit)
|
|
* because otherwise we would reset the timer every time and
|
|
* never check whether we received a probe response!
|
|
*/
|
|
if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
|
|
already = true;
|
|
|
|
ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL;
|
|
|
|
if (already)
|
|
return;
|
|
|
|
ieee80211_recalc_ps(sdata->local);
|
|
|
|
ifmgd->probe_send_count = 0;
|
|
ieee80211_mgd_probe_ap_send(sdata);
|
|
}
|
|
|
|
struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct cfg80211_bss *cbss;
|
|
struct sk_buff *skb;
|
|
const struct element *ssid;
|
|
int ssid_len;
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION ||
|
|
ieee80211_vif_is_mld(&sdata->vif)))
|
|
return NULL;
|
|
|
|
if (ifmgd->associated)
|
|
cbss = sdata->deflink.u.mgd.bss;
|
|
else if (ifmgd->auth_data)
|
|
cbss = ifmgd->auth_data->bss;
|
|
else if (ifmgd->assoc_data && ifmgd->assoc_data->link[0].bss)
|
|
cbss = ifmgd->assoc_data->link[0].bss;
|
|
else
|
|
return NULL;
|
|
|
|
rcu_read_lock();
|
|
ssid = ieee80211_bss_get_elem(cbss, WLAN_EID_SSID);
|
|
if (WARN_ONCE(!ssid || ssid->datalen > IEEE80211_MAX_SSID_LEN,
|
|
"invalid SSID element (len=%d)",
|
|
ssid ? ssid->datalen : -1))
|
|
ssid_len = 0;
|
|
else
|
|
ssid_len = ssid->datalen;
|
|
|
|
skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid,
|
|
(u32) -1, cbss->channel,
|
|
ssid->data, ssid_len,
|
|
NULL, 0, IEEE80211_PROBE_FLAG_DIRECTED);
|
|
rcu_read_unlock();
|
|
|
|
return skb;
|
|
}
|
|
EXPORT_SYMBOL(ieee80211_ap_probereq_get);
|
|
|
|
static void ieee80211_report_disconnect(struct ieee80211_sub_if_data *sdata,
|
|
const u8 *buf, size_t len, bool tx,
|
|
u16 reason, bool reconnect)
|
|
{
|
|
struct ieee80211_event event = {
|
|
.type = MLME_EVENT,
|
|
.u.mlme.data = tx ? DEAUTH_TX_EVENT : DEAUTH_RX_EVENT,
|
|
.u.mlme.reason = reason,
|
|
};
|
|
|
|
if (tx)
|
|
cfg80211_tx_mlme_mgmt(sdata->dev, buf, len, reconnect);
|
|
else
|
|
cfg80211_rx_mlme_mgmt(sdata->dev, buf, len);
|
|
|
|
drv_event_callback(sdata->local, sdata, &event);
|
|
}
|
|
|
|
static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
|
|
bool tx;
|
|
|
|
lockdep_assert_wiphy(local->hw.wiphy);
|
|
|
|
if (!ifmgd->associated)
|
|
return;
|
|
|
|
/* in MLO assume we have a link where we can TX the frame */
|
|
tx = ieee80211_vif_is_mld(&sdata->vif) ||
|
|
!sdata->deflink.csa_block_tx;
|
|
|
|
if (!ifmgd->driver_disconnect) {
|
|
unsigned int link_id;
|
|
|
|
/*
|
|
* AP is probably out of range (or not reachable for another
|
|
* reason) so remove the bss structs for that AP. In the case
|
|
* of multi-link, it's not clear that all of them really are
|
|
* out of range, but if they weren't the driver likely would
|
|
* have switched to just have a single link active?
|
|
*/
|
|
for (link_id = 0;
|
|
link_id < ARRAY_SIZE(sdata->link);
|
|
link_id++) {
|
|
struct ieee80211_link_data *link;
|
|
|
|
link = sdata_dereference(sdata->link[link_id], sdata);
|
|
if (!link)
|
|
continue;
|
|
cfg80211_unlink_bss(local->hw.wiphy, link->u.mgd.bss);
|
|
link->u.mgd.bss = NULL;
|
|
}
|
|
}
|
|
|
|
ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
|
|
ifmgd->driver_disconnect ?
|
|
WLAN_REASON_DEAUTH_LEAVING :
|
|
WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
|
|
tx, frame_buf);
|
|
/* the other links will be destroyed */
|
|
sdata->vif.bss_conf.csa_active = false;
|
|
sdata->deflink.u.mgd.csa_waiting_bcn = false;
|
|
if (sdata->deflink.csa_block_tx) {
|
|
ieee80211_wake_vif_queues(local, sdata,
|
|
IEEE80211_QUEUE_STOP_REASON_CSA);
|
|
sdata->deflink.csa_block_tx = false;
|
|
}
|
|
|
|
ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), tx,
|
|
WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
|
|
ifmgd->reconnect);
|
|
ifmgd->reconnect = false;
|
|
}
|
|
|
|
static void ieee80211_beacon_connection_loss_work(struct wiphy *wiphy,
|
|
struct wiphy_work *work)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata =
|
|
container_of(work, struct ieee80211_sub_if_data,
|
|
u.mgd.beacon_connection_loss_work);
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
|
|
if (ifmgd->connection_loss) {
|
|
sdata_info(sdata, "Connection to AP %pM lost\n",
|
|
sdata->vif.cfg.ap_addr);
|
|
__ieee80211_disconnect(sdata);
|
|
ifmgd->connection_loss = false;
|
|
} else if (ifmgd->driver_disconnect) {
|
|
sdata_info(sdata,
|
|
"Driver requested disconnection from AP %pM\n",
|
|
sdata->vif.cfg.ap_addr);
|
|
__ieee80211_disconnect(sdata);
|
|
ifmgd->driver_disconnect = false;
|
|
} else {
|
|
if (ifmgd->associated)
|
|
sdata->deflink.u.mgd.beacon_loss_count++;
|
|
ieee80211_mgd_probe_ap(sdata, true);
|
|
}
|
|
}
|
|
|
|
static void ieee80211_csa_connection_drop_work(struct wiphy *wiphy,
|
|
struct wiphy_work *work)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata =
|
|
container_of(work, struct ieee80211_sub_if_data,
|
|
u.mgd.csa_connection_drop_work);
|
|
|
|
__ieee80211_disconnect(sdata);
|
|
}
|
|
|
|
void ieee80211_beacon_loss(struct ieee80211_vif *vif)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
|
|
struct ieee80211_hw *hw = &sdata->local->hw;
|
|
|
|
trace_api_beacon_loss(sdata);
|
|
|
|
sdata->u.mgd.connection_loss = false;
|
|
wiphy_work_queue(hw->wiphy, &sdata->u.mgd.beacon_connection_loss_work);
|
|
}
|
|
EXPORT_SYMBOL(ieee80211_beacon_loss);
|
|
|
|
void ieee80211_connection_loss(struct ieee80211_vif *vif)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
|
|
struct ieee80211_hw *hw = &sdata->local->hw;
|
|
|
|
trace_api_connection_loss(sdata);
|
|
|
|
sdata->u.mgd.connection_loss = true;
|
|
wiphy_work_queue(hw->wiphy, &sdata->u.mgd.beacon_connection_loss_work);
|
|
}
|
|
EXPORT_SYMBOL(ieee80211_connection_loss);
|
|
|
|
void ieee80211_disconnect(struct ieee80211_vif *vif, bool reconnect)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
|
|
struct ieee80211_hw *hw = &sdata->local->hw;
|
|
|
|
trace_api_disconnect(sdata, reconnect);
|
|
|
|
if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
|
|
return;
|
|
|
|
sdata->u.mgd.driver_disconnect = true;
|
|
sdata->u.mgd.reconnect = reconnect;
|
|
wiphy_work_queue(hw->wiphy, &sdata->u.mgd.beacon_connection_loss_work);
|
|
}
|
|
EXPORT_SYMBOL(ieee80211_disconnect);
|
|
|
|
static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
|
|
bool assoc)
|
|
{
|
|
struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
if (!assoc) {
|
|
/*
|
|
* we are not authenticated yet, the only timer that could be
|
|
* running is the timeout for the authentication response which
|
|
* which is not relevant anymore.
|
|
*/
|
|
del_timer_sync(&sdata->u.mgd.timer);
|
|
sta_info_destroy_addr(sdata, auth_data->ap_addr);
|
|
|
|
/* other links are destroyed */
|
|
sdata->deflink.u.mgd.conn_flags = 0;
|
|
eth_zero_addr(sdata->deflink.u.mgd.bssid);
|
|
ieee80211_link_info_change_notify(sdata, &sdata->deflink,
|
|
BSS_CHANGED_BSSID);
|
|
sdata->u.mgd.flags = 0;
|
|
|
|
ieee80211_link_release_channel(&sdata->deflink);
|
|
ieee80211_vif_set_links(sdata, 0, 0);
|
|
}
|
|
|
|
cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
|
|
kfree(auth_data);
|
|
sdata->u.mgd.auth_data = NULL;
|
|
}
|
|
|
|
enum assoc_status {
|
|
ASSOC_SUCCESS,
|
|
ASSOC_REJECTED,
|
|
ASSOC_TIMEOUT,
|
|
ASSOC_ABANDON,
|
|
};
|
|
|
|
static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
|
|
enum assoc_status status)
|
|
{
|
|
struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
if (status != ASSOC_SUCCESS) {
|
|
/*
|
|
* we are not associated yet, the only timer that could be
|
|
* running is the timeout for the association response which
|
|
* which is not relevant anymore.
|
|
*/
|
|
del_timer_sync(&sdata->u.mgd.timer);
|
|
sta_info_destroy_addr(sdata, assoc_data->ap_addr);
|
|
|
|
sdata->deflink.u.mgd.conn_flags = 0;
|
|
eth_zero_addr(sdata->deflink.u.mgd.bssid);
|
|
ieee80211_link_info_change_notify(sdata, &sdata->deflink,
|
|
BSS_CHANGED_BSSID);
|
|
sdata->u.mgd.flags = 0;
|
|
sdata->vif.bss_conf.mu_mimo_owner = false;
|
|
|
|
if (status != ASSOC_REJECTED) {
|
|
struct cfg80211_assoc_failure data = {
|
|
.timeout = status == ASSOC_TIMEOUT,
|
|
};
|
|
int i;
|
|
|
|
BUILD_BUG_ON(ARRAY_SIZE(data.bss) !=
|
|
ARRAY_SIZE(assoc_data->link));
|
|
|
|
for (i = 0; i < ARRAY_SIZE(data.bss); i++)
|
|
data.bss[i] = assoc_data->link[i].bss;
|
|
|
|
if (ieee80211_vif_is_mld(&sdata->vif))
|
|
data.ap_mld_addr = assoc_data->ap_addr;
|
|
|
|
cfg80211_assoc_failure(sdata->dev, &data);
|
|
}
|
|
|
|
ieee80211_link_release_channel(&sdata->deflink);
|
|
ieee80211_vif_set_links(sdata, 0, 0);
|
|
}
|
|
|
|
kfree(assoc_data);
|
|
sdata->u.mgd.assoc_data = NULL;
|
|
}
|
|
|
|
static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_mgmt *mgmt, size_t len)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
|
|
const struct element *challenge;
|
|
u8 *pos;
|
|
u32 tx_flags = 0;
|
|
struct ieee80211_prep_tx_info info = {
|
|
.subtype = IEEE80211_STYPE_AUTH,
|
|
.link_id = auth_data->link_id,
|
|
};
|
|
|
|
pos = mgmt->u.auth.variable;
|
|
challenge = cfg80211_find_elem(WLAN_EID_CHALLENGE, pos,
|
|
len - (pos - (u8 *)mgmt));
|
|
if (!challenge)
|
|
return;
|
|
auth_data->expected_transaction = 4;
|
|
drv_mgd_prepare_tx(sdata->local, sdata, &info);
|
|
if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
|
|
tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
|
|
IEEE80211_TX_INTFL_MLME_CONN_TX;
|
|
ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
|
|
(void *)challenge,
|
|
challenge->datalen + sizeof(*challenge),
|
|
auth_data->ap_addr, auth_data->ap_addr,
|
|
auth_data->key, auth_data->key_len,
|
|
auth_data->key_idx, tx_flags);
|
|
}
|
|
|
|
static bool ieee80211_mark_sta_auth(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
const u8 *ap_addr = ifmgd->auth_data->ap_addr;
|
|
struct sta_info *sta;
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
sdata_info(sdata, "authenticated\n");
|
|
ifmgd->auth_data->done = true;
|
|
ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
|
|
ifmgd->auth_data->timeout_started = true;
|
|
run_again(sdata, ifmgd->auth_data->timeout);
|
|
|
|
/* move station state to auth */
|
|
sta = sta_info_get(sdata, ap_addr);
|
|
if (!sta) {
|
|
WARN_ONCE(1, "%s: STA %pM not found", sdata->name, ap_addr);
|
|
return false;
|
|
}
|
|
if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
|
|
sdata_info(sdata, "failed moving %pM to auth\n", ap_addr);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_mgmt *mgmt, size_t len)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
u16 auth_alg, auth_transaction, status_code;
|
|
struct ieee80211_event event = {
|
|
.type = MLME_EVENT,
|
|
.u.mlme.data = AUTH_EVENT,
|
|
};
|
|
struct ieee80211_prep_tx_info info = {
|
|
.subtype = IEEE80211_STYPE_AUTH,
|
|
};
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
if (len < 24 + 6)
|
|
return;
|
|
|
|
if (!ifmgd->auth_data || ifmgd->auth_data->done)
|
|
return;
|
|
|
|
if (!ether_addr_equal(ifmgd->auth_data->ap_addr, mgmt->bssid))
|
|
return;
|
|
|
|
auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
|
|
auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
|
|
status_code = le16_to_cpu(mgmt->u.auth.status_code);
|
|
|
|
if (auth_alg != ifmgd->auth_data->algorithm ||
|
|
(auth_alg != WLAN_AUTH_SAE &&
|
|
auth_transaction != ifmgd->auth_data->expected_transaction) ||
|
|
(auth_alg == WLAN_AUTH_SAE &&
|
|
(auth_transaction < ifmgd->auth_data->expected_transaction ||
|
|
auth_transaction > 2))) {
|
|
sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
|
|
mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
|
|
auth_transaction,
|
|
ifmgd->auth_data->expected_transaction);
|
|
goto notify_driver;
|
|
}
|
|
|
|
if (status_code != WLAN_STATUS_SUCCESS) {
|
|
cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
|
|
|
|
if (auth_alg == WLAN_AUTH_SAE &&
|
|
(status_code == WLAN_STATUS_ANTI_CLOG_REQUIRED ||
|
|
(auth_transaction == 1 &&
|
|
(status_code == WLAN_STATUS_SAE_HASH_TO_ELEMENT ||
|
|
status_code == WLAN_STATUS_SAE_PK)))) {
|
|
/* waiting for userspace now */
|
|
ifmgd->auth_data->waiting = true;
|
|
ifmgd->auth_data->timeout =
|
|
jiffies + IEEE80211_AUTH_WAIT_SAE_RETRY;
|
|
ifmgd->auth_data->timeout_started = true;
|
|
run_again(sdata, ifmgd->auth_data->timeout);
|
|
goto notify_driver;
|
|
}
|
|
|
|
sdata_info(sdata, "%pM denied authentication (status %d)\n",
|
|
mgmt->sa, status_code);
|
|
ieee80211_destroy_auth_data(sdata, false);
|
|
event.u.mlme.status = MLME_DENIED;
|
|
event.u.mlme.reason = status_code;
|
|
drv_event_callback(sdata->local, sdata, &event);
|
|
goto notify_driver;
|
|
}
|
|
|
|
switch (ifmgd->auth_data->algorithm) {
|
|
case WLAN_AUTH_OPEN:
|
|
case WLAN_AUTH_LEAP:
|
|
case WLAN_AUTH_FT:
|
|
case WLAN_AUTH_SAE:
|
|
case WLAN_AUTH_FILS_SK:
|
|
case WLAN_AUTH_FILS_SK_PFS:
|
|
case WLAN_AUTH_FILS_PK:
|
|
break;
|
|
case WLAN_AUTH_SHARED_KEY:
|
|
if (ifmgd->auth_data->expected_transaction != 4) {
|
|
ieee80211_auth_challenge(sdata, mgmt, len);
|
|
/* need another frame */
|
|
return;
|
|
}
|
|
break;
|
|
default:
|
|
WARN_ONCE(1, "invalid auth alg %d",
|
|
ifmgd->auth_data->algorithm);
|
|
goto notify_driver;
|
|
}
|
|
|
|
event.u.mlme.status = MLME_SUCCESS;
|
|
info.success = 1;
|
|
drv_event_callback(sdata->local, sdata, &event);
|
|
if (ifmgd->auth_data->algorithm != WLAN_AUTH_SAE ||
|
|
(auth_transaction == 2 &&
|
|
ifmgd->auth_data->expected_transaction == 2)) {
|
|
if (!ieee80211_mark_sta_auth(sdata))
|
|
return; /* ignore frame -- wait for timeout */
|
|
} else if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
|
|
auth_transaction == 2) {
|
|
sdata_info(sdata, "SAE peer confirmed\n");
|
|
ifmgd->auth_data->peer_confirmed = true;
|
|
}
|
|
|
|
cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
|
|
notify_driver:
|
|
drv_mgd_complete_tx(sdata->local, sdata, &info);
|
|
}
|
|
|
|
#define case_WLAN(type) \
|
|
case WLAN_REASON_##type: return #type
|
|
|
|
const char *ieee80211_get_reason_code_string(u16 reason_code)
|
|
{
|
|
switch (reason_code) {
|
|
case_WLAN(UNSPECIFIED);
|
|
case_WLAN(PREV_AUTH_NOT_VALID);
|
|
case_WLAN(DEAUTH_LEAVING);
|
|
case_WLAN(DISASSOC_DUE_TO_INACTIVITY);
|
|
case_WLAN(DISASSOC_AP_BUSY);
|
|
case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA);
|
|
case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA);
|
|
case_WLAN(DISASSOC_STA_HAS_LEFT);
|
|
case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH);
|
|
case_WLAN(DISASSOC_BAD_POWER);
|
|
case_WLAN(DISASSOC_BAD_SUPP_CHAN);
|
|
case_WLAN(INVALID_IE);
|
|
case_WLAN(MIC_FAILURE);
|
|
case_WLAN(4WAY_HANDSHAKE_TIMEOUT);
|
|
case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT);
|
|
case_WLAN(IE_DIFFERENT);
|
|
case_WLAN(INVALID_GROUP_CIPHER);
|
|
case_WLAN(INVALID_PAIRWISE_CIPHER);
|
|
case_WLAN(INVALID_AKMP);
|
|
case_WLAN(UNSUPP_RSN_VERSION);
|
|
case_WLAN(INVALID_RSN_IE_CAP);
|
|
case_WLAN(IEEE8021X_FAILED);
|
|
case_WLAN(CIPHER_SUITE_REJECTED);
|
|
case_WLAN(DISASSOC_UNSPECIFIED_QOS);
|
|
case_WLAN(DISASSOC_QAP_NO_BANDWIDTH);
|
|
case_WLAN(DISASSOC_LOW_ACK);
|
|
case_WLAN(DISASSOC_QAP_EXCEED_TXOP);
|
|
case_WLAN(QSTA_LEAVE_QBSS);
|
|
case_WLAN(QSTA_NOT_USE);
|
|
case_WLAN(QSTA_REQUIRE_SETUP);
|
|
case_WLAN(QSTA_TIMEOUT);
|
|
case_WLAN(QSTA_CIPHER_NOT_SUPP);
|
|
case_WLAN(MESH_PEER_CANCELED);
|
|
case_WLAN(MESH_MAX_PEERS);
|
|
case_WLAN(MESH_CONFIG);
|
|
case_WLAN(MESH_CLOSE);
|
|
case_WLAN(MESH_MAX_RETRIES);
|
|
case_WLAN(MESH_CONFIRM_TIMEOUT);
|
|
case_WLAN(MESH_INVALID_GTK);
|
|
case_WLAN(MESH_INCONSISTENT_PARAM);
|
|
case_WLAN(MESH_INVALID_SECURITY);
|
|
case_WLAN(MESH_PATH_ERROR);
|
|
case_WLAN(MESH_PATH_NOFORWARD);
|
|
case_WLAN(MESH_PATH_DEST_UNREACHABLE);
|
|
case_WLAN(MAC_EXISTS_IN_MBSS);
|
|
case_WLAN(MESH_CHAN_REGULATORY);
|
|
case_WLAN(MESH_CHAN);
|
|
default: return "<unknown>";
|
|
}
|
|
}
|
|
|
|
static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_mgmt *mgmt, size_t len)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
if (len < 24 + 2)
|
|
return;
|
|
|
|
if (!ether_addr_equal(mgmt->bssid, mgmt->sa)) {
|
|
ieee80211_tdls_handle_disconnect(sdata, mgmt->sa, reason_code);
|
|
return;
|
|
}
|
|
|
|
if (ifmgd->associated &&
|
|
ether_addr_equal(mgmt->bssid, sdata->vif.cfg.ap_addr)) {
|
|
sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n",
|
|
sdata->vif.cfg.ap_addr, reason_code,
|
|
ieee80211_get_reason_code_string(reason_code));
|
|
|
|
ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
|
|
|
|
ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false,
|
|
reason_code, false);
|
|
return;
|
|
}
|
|
|
|
if (ifmgd->assoc_data &&
|
|
ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->ap_addr)) {
|
|
sdata_info(sdata,
|
|
"deauthenticated from %pM while associating (Reason: %u=%s)\n",
|
|
ifmgd->assoc_data->ap_addr, reason_code,
|
|
ieee80211_get_reason_code_string(reason_code));
|
|
|
|
ieee80211_destroy_assoc_data(sdata, ASSOC_ABANDON);
|
|
|
|
cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_mgmt *mgmt, size_t len)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
u16 reason_code;
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
if (len < 24 + 2)
|
|
return;
|
|
|
|
if (!ifmgd->associated ||
|
|
!ether_addr_equal(mgmt->bssid, sdata->vif.cfg.ap_addr))
|
|
return;
|
|
|
|
reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
|
|
|
|
if (!ether_addr_equal(mgmt->bssid, mgmt->sa)) {
|
|
ieee80211_tdls_handle_disconnect(sdata, mgmt->sa, reason_code);
|
|
return;
|
|
}
|
|
|
|
sdata_info(sdata, "disassociated from %pM (Reason: %u=%s)\n",
|
|
sdata->vif.cfg.ap_addr, reason_code,
|
|
ieee80211_get_reason_code_string(reason_code));
|
|
|
|
ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
|
|
|
|
ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, reason_code,
|
|
false);
|
|
}
|
|
|
|
static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
|
|
u8 *supp_rates, unsigned int supp_rates_len,
|
|
u32 *rates, u32 *basic_rates,
|
|
bool *have_higher_than_11mbit,
|
|
int *min_rate, int *min_rate_index)
|
|
{
|
|
int i, j;
|
|
|
|
for (i = 0; i < supp_rates_len; i++) {
|
|
int rate = supp_rates[i] & 0x7f;
|
|
bool is_basic = !!(supp_rates[i] & 0x80);
|
|
|
|
if ((rate * 5) > 110)
|
|
*have_higher_than_11mbit = true;
|
|
|
|
/*
|
|
* Skip HT, VHT, HE, EHT and SAE H2E only BSS membership
|
|
* selectors since they're not rates.
|
|
*
|
|
* Note: Even though the membership selector and the basic
|
|
* rate flag share the same bit, they are not exactly
|
|
* the same.
|
|
*/
|
|
if (supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY) ||
|
|
supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY) ||
|
|
supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_HE_PHY) ||
|
|
supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_EHT_PHY) ||
|
|
supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_SAE_H2E))
|
|
continue;
|
|
|
|
for (j = 0; j < sband->n_bitrates; j++) {
|
|
struct ieee80211_rate *br;
|
|
int brate;
|
|
|
|
br = &sband->bitrates[j];
|
|
|
|
brate = DIV_ROUND_UP(br->bitrate, 5);
|
|
if (brate == rate) {
|
|
*rates |= BIT(j);
|
|
if (is_basic)
|
|
*basic_rates |= BIT(j);
|
|
if ((rate * 5) < *min_rate) {
|
|
*min_rate = rate * 5;
|
|
*min_rate_index = j;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool ieee80211_twt_req_supported(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_supported_band *sband,
|
|
const struct link_sta_info *link_sta,
|
|
const struct ieee802_11_elems *elems)
|
|
{
|
|
const struct ieee80211_sta_he_cap *own_he_cap =
|
|
ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
|
|
|
|
if (elems->ext_capab_len < 10)
|
|
return false;
|
|
|
|
if (!(elems->ext_capab[9] & WLAN_EXT_CAPA10_TWT_RESPONDER_SUPPORT))
|
|
return false;
|
|
|
|
return link_sta->pub->he_cap.he_cap_elem.mac_cap_info[0] &
|
|
IEEE80211_HE_MAC_CAP0_TWT_RES &&
|
|
own_he_cap &&
|
|
(own_he_cap->he_cap_elem.mac_cap_info[0] &
|
|
IEEE80211_HE_MAC_CAP0_TWT_REQ);
|
|
}
|
|
|
|
static u64 ieee80211_recalc_twt_req(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_supported_band *sband,
|
|
struct ieee80211_link_data *link,
|
|
struct link_sta_info *link_sta,
|
|
struct ieee802_11_elems *elems)
|
|
{
|
|
bool twt = ieee80211_twt_req_supported(sdata, sband, link_sta, elems);
|
|
|
|
if (link->conf->twt_requester != twt) {
|
|
link->conf->twt_requester = twt;
|
|
return BSS_CHANGED_TWT;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static bool ieee80211_twt_bcast_support(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_bss_conf *bss_conf,
|
|
struct ieee80211_supported_band *sband,
|
|
struct link_sta_info *link_sta)
|
|
{
|
|
const struct ieee80211_sta_he_cap *own_he_cap =
|
|
ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
|
|
|
|
return bss_conf->he_support &&
|
|
(link_sta->pub->he_cap.he_cap_elem.mac_cap_info[2] &
|
|
IEEE80211_HE_MAC_CAP2_BCAST_TWT) &&
|
|
own_he_cap &&
|
|
(own_he_cap->he_cap_elem.mac_cap_info[2] &
|
|
IEEE80211_HE_MAC_CAP2_BCAST_TWT);
|
|
}
|
|
|
|
static bool ieee80211_assoc_config_link(struct ieee80211_link_data *link,
|
|
struct link_sta_info *link_sta,
|
|
struct cfg80211_bss *cbss,
|
|
struct ieee80211_mgmt *mgmt,
|
|
const u8 *elem_start,
|
|
unsigned int elem_len,
|
|
u64 *changed)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = link->sdata;
|
|
struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
|
|
struct ieee80211_bss_conf *bss_conf = link->conf;
|
|
struct ieee80211_local *local = sdata->local;
|
|
unsigned int link_id = link->link_id;
|
|
struct ieee80211_elems_parse_params parse_params = {
|
|
.start = elem_start,
|
|
.len = elem_len,
|
|
.link_id = link_id == assoc_data->assoc_link_id ? -1 : link_id,
|
|
.from_ap = true,
|
|
};
|
|
bool is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ;
|
|
bool is_s1g = cbss->channel->band == NL80211_BAND_S1GHZ;
|
|
const struct cfg80211_bss_ies *bss_ies = NULL;
|
|
struct ieee80211_supported_band *sband;
|
|
struct ieee802_11_elems *elems;
|
|
const __le16 prof_bss_param_ch_present =
|
|
cpu_to_le16(IEEE80211_MLE_STA_CONTROL_BSS_PARAM_CHANGE_CNT_PRESENT);
|
|
u16 capab_info;
|
|
bool ret;
|
|
|
|
elems = ieee802_11_parse_elems_full(&parse_params);
|
|
if (!elems)
|
|
return false;
|
|
|
|
if (link_id == assoc_data->assoc_link_id) {
|
|
capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
|
|
|
|
/*
|
|
* we should not get to this flow unless the association was
|
|
* successful, so set the status directly to success
|
|
*/
|
|
assoc_data->link[link_id].status = WLAN_STATUS_SUCCESS;
|
|
if (elems->ml_basic) {
|
|
if (!(elems->ml_basic->control &
|
|
cpu_to_le16(IEEE80211_MLC_BASIC_PRES_BSS_PARAM_CH_CNT))) {
|
|
ret = false;
|
|
goto out;
|
|
}
|
|
link->u.mgd.bss_param_ch_cnt =
|
|
ieee80211_mle_get_bss_param_ch_cnt(elems->ml_basic);
|
|
}
|
|
} else if (!elems->prof ||
|
|
!(elems->prof->control & prof_bss_param_ch_present)) {
|
|
ret = false;
|
|
goto out;
|
|
} else {
|
|
const u8 *ptr = elems->prof->variable +
|
|
elems->prof->sta_info_len - 1;
|
|
|
|
/*
|
|
* During parsing, we validated that these fields exist,
|
|
* otherwise elems->prof would have been set to NULL.
|
|
*/
|
|
capab_info = get_unaligned_le16(ptr);
|
|
assoc_data->link[link_id].status = get_unaligned_le16(ptr + 2);
|
|
link->u.mgd.bss_param_ch_cnt =
|
|
ieee80211_mle_basic_sta_prof_bss_param_ch_cnt(elems->prof);
|
|
|
|
if (assoc_data->link[link_id].status != WLAN_STATUS_SUCCESS) {
|
|
link_info(link, "association response status code=%u\n",
|
|
assoc_data->link[link_id].status);
|
|
ret = true;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (!is_s1g && !elems->supp_rates) {
|
|
sdata_info(sdata, "no SuppRates element in AssocResp\n");
|
|
ret = false;
|
|
goto out;
|
|
}
|
|
|
|
link->u.mgd.tdls_chan_switch_prohibited =
|
|
elems->ext_capab && elems->ext_capab_len >= 5 &&
|
|
(elems->ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED);
|
|
|
|
/*
|
|
* Some APs are erroneously not including some information in their
|
|
* (re)association response frames. Try to recover by using the data
|
|
* from the beacon or probe response. This seems to afflict mobile
|
|
* 2G/3G/4G wifi routers, reported models include the "Onda PN51T",
|
|
* "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device.
|
|
*/
|
|
if (!is_6ghz &&
|
|
((assoc_data->wmm && !elems->wmm_param) ||
|
|
(!(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HT) &&
|
|
(!elems->ht_cap_elem || !elems->ht_operation)) ||
|
|
(!(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_VHT) &&
|
|
(!elems->vht_cap_elem || !elems->vht_operation)))) {
|
|
const struct cfg80211_bss_ies *ies;
|
|
struct ieee802_11_elems *bss_elems;
|
|
|
|
rcu_read_lock();
|
|
ies = rcu_dereference(cbss->ies);
|
|
if (ies)
|
|
bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
|
|
GFP_ATOMIC);
|
|
rcu_read_unlock();
|
|
if (!bss_ies) {
|
|
ret = false;
|
|
goto out;
|
|
}
|
|
|
|
parse_params.start = bss_ies->data;
|
|
parse_params.len = bss_ies->len;
|
|
parse_params.bss = cbss;
|
|
bss_elems = ieee802_11_parse_elems_full(&parse_params);
|
|
if (!bss_elems) {
|
|
ret = false;
|
|
goto out;
|
|
}
|
|
|
|
if (assoc_data->wmm &&
|
|
!elems->wmm_param && bss_elems->wmm_param) {
|
|
elems->wmm_param = bss_elems->wmm_param;
|
|
sdata_info(sdata,
|
|
"AP bug: WMM param missing from AssocResp\n");
|
|
}
|
|
|
|
/*
|
|
* Also check if we requested HT/VHT, otherwise the AP doesn't
|
|
* have to include the IEs in the (re)association response.
|
|
*/
|
|
if (!elems->ht_cap_elem && bss_elems->ht_cap_elem &&
|
|
!(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HT)) {
|
|
elems->ht_cap_elem = bss_elems->ht_cap_elem;
|
|
sdata_info(sdata,
|
|
"AP bug: HT capability missing from AssocResp\n");
|
|
}
|
|
if (!elems->ht_operation && bss_elems->ht_operation &&
|
|
!(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HT)) {
|
|
elems->ht_operation = bss_elems->ht_operation;
|
|
sdata_info(sdata,
|
|
"AP bug: HT operation missing from AssocResp\n");
|
|
}
|
|
if (!elems->vht_cap_elem && bss_elems->vht_cap_elem &&
|
|
!(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_VHT)) {
|
|
elems->vht_cap_elem = bss_elems->vht_cap_elem;
|
|
sdata_info(sdata,
|
|
"AP bug: VHT capa missing from AssocResp\n");
|
|
}
|
|
if (!elems->vht_operation && bss_elems->vht_operation &&
|
|
!(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_VHT)) {
|
|
elems->vht_operation = bss_elems->vht_operation;
|
|
sdata_info(sdata,
|
|
"AP bug: VHT operation missing from AssocResp\n");
|
|
}
|
|
|
|
kfree(bss_elems);
|
|
}
|
|
|
|
/*
|
|
* We previously checked these in the beacon/probe response, so
|
|
* they should be present here. This is just a safety net.
|
|
*/
|
|
if (!is_6ghz && !(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HT) &&
|
|
(!elems->wmm_param || !elems->ht_cap_elem || !elems->ht_operation)) {
|
|
sdata_info(sdata,
|
|
"HT AP is missing WMM params or HT capability/operation\n");
|
|
ret = false;
|
|
goto out;
|
|
}
|
|
|
|
if (!is_6ghz && !(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_VHT) &&
|
|
(!elems->vht_cap_elem || !elems->vht_operation)) {
|
|
sdata_info(sdata,
|
|
"VHT AP is missing VHT capability/operation\n");
|
|
ret = false;
|
|
goto out;
|
|
}
|
|
|
|
if (is_6ghz && !(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HE) &&
|
|
!elems->he_6ghz_capa) {
|
|
sdata_info(sdata,
|
|
"HE 6 GHz AP is missing HE 6 GHz band capability\n");
|
|
ret = false;
|
|
goto out;
|
|
}
|
|
|
|
if (WARN_ON(!link->conf->chandef.chan)) {
|
|
ret = false;
|
|
goto out;
|
|
}
|
|
sband = local->hw.wiphy->bands[link->conf->chandef.chan->band];
|
|
|
|
if (!(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HE) &&
|
|
(!elems->he_cap || !elems->he_operation)) {
|
|
sdata_info(sdata,
|
|
"HE AP is missing HE capability/operation\n");
|
|
ret = false;
|
|
goto out;
|
|
}
|
|
|
|
/* Set up internal HT/VHT capabilities */
|
|
if (elems->ht_cap_elem && !(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HT))
|
|
ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
|
|
elems->ht_cap_elem,
|
|
link_sta);
|
|
|
|
if (elems->vht_cap_elem &&
|
|
!(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_VHT)) {
|
|
const struct ieee80211_vht_cap *bss_vht_cap = NULL;
|
|
const struct cfg80211_bss_ies *ies;
|
|
|
|
/*
|
|
* Cisco AP module 9115 with FW 17.3 has a bug and sends a
|
|
* too large maximum MPDU length in the association response
|
|
* (indicating 12k) that it cannot actually process ...
|
|
* Work around that.
|
|
*/
|
|
rcu_read_lock();
|
|
ies = rcu_dereference(cbss->ies);
|
|
if (ies) {
|
|
const struct element *elem;
|
|
|
|
elem = cfg80211_find_elem(WLAN_EID_VHT_CAPABILITY,
|
|
ies->data, ies->len);
|
|
if (elem && elem->datalen >= sizeof(*bss_vht_cap))
|
|
bss_vht_cap = (const void *)elem->data;
|
|
}
|
|
|
|
ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
|
|
elems->vht_cap_elem,
|
|
bss_vht_cap, link_sta);
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
if (elems->he_operation && !(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HE) &&
|
|
elems->he_cap) {
|
|
ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
|
|
elems->he_cap,
|
|
elems->he_cap_len,
|
|
elems->he_6ghz_capa,
|
|
link_sta);
|
|
|
|
bss_conf->he_support = link_sta->pub->he_cap.has_he;
|
|
if (elems->rsnx && elems->rsnx_len &&
|
|
(elems->rsnx[0] & WLAN_RSNX_CAPA_PROTECTED_TWT) &&
|
|
wiphy_ext_feature_isset(local->hw.wiphy,
|
|
NL80211_EXT_FEATURE_PROTECTED_TWT))
|
|
bss_conf->twt_protected = true;
|
|
else
|
|
bss_conf->twt_protected = false;
|
|
|
|
*changed |= ieee80211_recalc_twt_req(sdata, sband, link,
|
|
link_sta, elems);
|
|
|
|
if (elems->eht_operation && elems->eht_cap &&
|
|
!(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_EHT)) {
|
|
ieee80211_eht_cap_ie_to_sta_eht_cap(sdata, sband,
|
|
elems->he_cap,
|
|
elems->he_cap_len,
|
|
elems->eht_cap,
|
|
elems->eht_cap_len,
|
|
link_sta);
|
|
|
|
bss_conf->eht_support = link_sta->pub->eht_cap.has_eht;
|
|
*changed |= BSS_CHANGED_EHT_PUNCTURING;
|
|
} else {
|
|
bss_conf->eht_support = false;
|
|
}
|
|
} else {
|
|
bss_conf->he_support = false;
|
|
bss_conf->twt_requester = false;
|
|
bss_conf->twt_protected = false;
|
|
bss_conf->eht_support = false;
|
|
}
|
|
|
|
bss_conf->twt_broadcast =
|
|
ieee80211_twt_bcast_support(sdata, bss_conf, sband, link_sta);
|
|
|
|
if (bss_conf->he_support) {
|
|
bss_conf->he_bss_color.color =
|
|
le32_get_bits(elems->he_operation->he_oper_params,
|
|
IEEE80211_HE_OPERATION_BSS_COLOR_MASK);
|
|
bss_conf->he_bss_color.partial =
|
|
le32_get_bits(elems->he_operation->he_oper_params,
|
|
IEEE80211_HE_OPERATION_PARTIAL_BSS_COLOR);
|
|
bss_conf->he_bss_color.enabled =
|
|
!le32_get_bits(elems->he_operation->he_oper_params,
|
|
IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
|
|
|
|
if (bss_conf->he_bss_color.enabled)
|
|
*changed |= BSS_CHANGED_HE_BSS_COLOR;
|
|
|
|
bss_conf->htc_trig_based_pkt_ext =
|
|
le32_get_bits(elems->he_operation->he_oper_params,
|
|
IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK);
|
|
bss_conf->frame_time_rts_th =
|
|
le32_get_bits(elems->he_operation->he_oper_params,
|
|
IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
|
|
|
|
bss_conf->uora_exists = !!elems->uora_element;
|
|
if (elems->uora_element)
|
|
bss_conf->uora_ocw_range = elems->uora_element[0];
|
|
|
|
ieee80211_he_op_ie_to_bss_conf(&sdata->vif, elems->he_operation);
|
|
ieee80211_he_spr_ie_to_bss_conf(&sdata->vif, elems->he_spr);
|
|
/* TODO: OPEN: what happens if BSS color disable is set? */
|
|
}
|
|
|
|
if (cbss->transmitted_bss) {
|
|
bss_conf->nontransmitted = true;
|
|
ether_addr_copy(bss_conf->transmitter_bssid,
|
|
cbss->transmitted_bss->bssid);
|
|
bss_conf->bssid_indicator = cbss->max_bssid_indicator;
|
|
bss_conf->bssid_index = cbss->bssid_index;
|
|
}
|
|
|
|
/*
|
|
* Some APs, e.g. Netgear WNDR3700, report invalid HT operation data
|
|
* in their association response, so ignore that data for our own
|
|
* configuration. If it changed since the last beacon, we'll get the
|
|
* next beacon and update then.
|
|
*/
|
|
|
|
/*
|
|
* If an operating mode notification IE is present, override the
|
|
* NSS calculation (that would be done in rate_control_rate_init())
|
|
* and use the # of streams from that element.
|
|
*/
|
|
if (elems->opmode_notif &&
|
|
!(*elems->opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
|
|
u8 nss;
|
|
|
|
nss = *elems->opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
|
|
nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
|
|
nss += 1;
|
|
link_sta->pub->rx_nss = nss;
|
|
}
|
|
|
|
/*
|
|
* Always handle WMM once after association regardless
|
|
* of the first value the AP uses. Setting -1 here has
|
|
* that effect because the AP values is an unsigned
|
|
* 4-bit value.
|
|
*/
|
|
link->u.mgd.wmm_last_param_set = -1;
|
|
link->u.mgd.mu_edca_last_param_set = -1;
|
|
|
|
if (link->u.mgd.disable_wmm_tracking) {
|
|
ieee80211_set_wmm_default(link, false, false);
|
|
} else if (!ieee80211_sta_wmm_params(local, link, elems->wmm_param,
|
|
elems->wmm_param_len,
|
|
elems->mu_edca_param_set)) {
|
|
/* still enable QoS since we might have HT/VHT */
|
|
ieee80211_set_wmm_default(link, false, true);
|
|
/* disable WMM tracking in this case to disable
|
|
* tracking WMM parameter changes in the beacon if
|
|
* the parameters weren't actually valid. Doing so
|
|
* avoids changing parameters very strangely when
|
|
* the AP is going back and forth between valid and
|
|
* invalid parameters.
|
|
*/
|
|
link->u.mgd.disable_wmm_tracking = true;
|
|
}
|
|
|
|
if (elems->max_idle_period_ie) {
|
|
bss_conf->max_idle_period =
|
|
le16_to_cpu(elems->max_idle_period_ie->max_idle_period);
|
|
bss_conf->protected_keep_alive =
|
|
!!(elems->max_idle_period_ie->idle_options &
|
|
WLAN_IDLE_OPTIONS_PROTECTED_KEEP_ALIVE);
|
|
*changed |= BSS_CHANGED_KEEP_ALIVE;
|
|
} else {
|
|
bss_conf->max_idle_period = 0;
|
|
bss_conf->protected_keep_alive = false;
|
|
}
|
|
|
|
/* set assoc capability (AID was already set earlier),
|
|
* ieee80211_set_associated() will tell the driver */
|
|
bss_conf->assoc_capability = capab_info;
|
|
|
|
ret = true;
|
|
out:
|
|
kfree(elems);
|
|
kfree(bss_ies);
|
|
return ret;
|
|
}
|
|
|
|
static int ieee80211_mgd_setup_link_sta(struct ieee80211_link_data *link,
|
|
struct sta_info *sta,
|
|
struct link_sta_info *link_sta,
|
|
struct cfg80211_bss *cbss)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = link->sdata;
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_bss *bss = (void *)cbss->priv;
|
|
u32 rates = 0, basic_rates = 0;
|
|
bool have_higher_than_11mbit = false;
|
|
int min_rate = INT_MAX, min_rate_index = -1;
|
|
struct ieee80211_supported_band *sband;
|
|
|
|
memcpy(link_sta->addr, cbss->bssid, ETH_ALEN);
|
|
memcpy(link_sta->pub->addr, cbss->bssid, ETH_ALEN);
|
|
|
|
/* TODO: S1G Basic Rate Set is expressed elsewhere */
|
|
if (cbss->channel->band == NL80211_BAND_S1GHZ) {
|
|
ieee80211_s1g_sta_rate_init(sta);
|
|
return 0;
|
|
}
|
|
|
|
sband = local->hw.wiphy->bands[cbss->channel->band];
|
|
|
|
ieee80211_get_rates(sband, bss->supp_rates, bss->supp_rates_len,
|
|
&rates, &basic_rates, &have_higher_than_11mbit,
|
|
&min_rate, &min_rate_index);
|
|
|
|
/*
|
|
* This used to be a workaround for basic rates missing
|
|
* in the association response frame. Now that we no
|
|
* longer use the basic rates from there, it probably
|
|
* doesn't happen any more, but keep the workaround so
|
|
* in case some *other* APs are buggy in different ways
|
|
* we can connect -- with a warning.
|
|
* Allow this workaround only in case the AP provided at least
|
|
* one rate.
|
|
*/
|
|
if (min_rate_index < 0) {
|
|
link_info(link, "No legacy rates in association response\n");
|
|
return -EINVAL;
|
|
} else if (!basic_rates) {
|
|
link_info(link, "No basic rates, using min rate instead\n");
|
|
basic_rates = BIT(min_rate_index);
|
|
}
|
|
|
|
if (rates)
|
|
link_sta->pub->supp_rates[cbss->channel->band] = rates;
|
|
else
|
|
link_info(link, "No rates found, keeping mandatory only\n");
|
|
|
|
link->conf->basic_rates = basic_rates;
|
|
|
|
/* cf. IEEE 802.11 9.2.12 */
|
|
link->operating_11g_mode = sband->band == NL80211_BAND_2GHZ &&
|
|
have_higher_than_11mbit;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static u8 ieee80211_max_rx_chains(struct ieee80211_link_data *link,
|
|
struct cfg80211_bss *cbss)
|
|
{
|
|
struct ieee80211_he_mcs_nss_supp *he_mcs_nss_supp;
|
|
const struct element *ht_cap_elem, *vht_cap_elem;
|
|
const struct cfg80211_bss_ies *ies;
|
|
const struct ieee80211_ht_cap *ht_cap;
|
|
const struct ieee80211_vht_cap *vht_cap;
|
|
const struct ieee80211_he_cap_elem *he_cap;
|
|
const struct element *he_cap_elem;
|
|
u16 mcs_80_map, mcs_160_map;
|
|
int i, mcs_nss_size;
|
|
bool support_160;
|
|
u8 chains = 1;
|
|
|
|
if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HT)
|
|
return chains;
|
|
|
|
ht_cap_elem = ieee80211_bss_get_elem(cbss, WLAN_EID_HT_CAPABILITY);
|
|
if (ht_cap_elem && ht_cap_elem->datalen >= sizeof(*ht_cap)) {
|
|
ht_cap = (void *)ht_cap_elem->data;
|
|
chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
|
|
/*
|
|
* TODO: use "Tx Maximum Number Spatial Streams Supported" and
|
|
* "Tx Unequal Modulation Supported" fields.
|
|
*/
|
|
}
|
|
|
|
if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_VHT)
|
|
return chains;
|
|
|
|
vht_cap_elem = ieee80211_bss_get_elem(cbss, WLAN_EID_VHT_CAPABILITY);
|
|
if (vht_cap_elem && vht_cap_elem->datalen >= sizeof(*vht_cap)) {
|
|
u8 nss;
|
|
u16 tx_mcs_map;
|
|
|
|
vht_cap = (void *)vht_cap_elem->data;
|
|
tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
|
|
for (nss = 8; nss > 0; nss--) {
|
|
if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=
|
|
IEEE80211_VHT_MCS_NOT_SUPPORTED)
|
|
break;
|
|
}
|
|
/* TODO: use "Tx Highest Supported Long GI Data Rate" field? */
|
|
chains = max(chains, nss);
|
|
}
|
|
|
|
if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HE)
|
|
return chains;
|
|
|
|
ies = rcu_dereference(cbss->ies);
|
|
he_cap_elem = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY,
|
|
ies->data, ies->len);
|
|
|
|
if (!he_cap_elem || he_cap_elem->datalen < sizeof(*he_cap))
|
|
return chains;
|
|
|
|
/* skip one byte ext_tag_id */
|
|
he_cap = (void *)(he_cap_elem->data + 1);
|
|
mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap);
|
|
|
|
/* invalid HE IE */
|
|
if (he_cap_elem->datalen < 1 + mcs_nss_size + sizeof(*he_cap))
|
|
return chains;
|
|
|
|
/* mcs_nss is right after he_cap info */
|
|
he_mcs_nss_supp = (void *)(he_cap + 1);
|
|
|
|
mcs_80_map = le16_to_cpu(he_mcs_nss_supp->tx_mcs_80);
|
|
|
|
for (i = 7; i >= 0; i--) {
|
|
u8 mcs_80 = mcs_80_map >> (2 * i) & 3;
|
|
|
|
if (mcs_80 != IEEE80211_VHT_MCS_NOT_SUPPORTED) {
|
|
chains = max_t(u8, chains, i + 1);
|
|
break;
|
|
}
|
|
}
|
|
|
|
support_160 = he_cap->phy_cap_info[0] &
|
|
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
|
|
|
|
if (!support_160)
|
|
return chains;
|
|
|
|
mcs_160_map = le16_to_cpu(he_mcs_nss_supp->tx_mcs_160);
|
|
for (i = 7; i >= 0; i--) {
|
|
u8 mcs_160 = mcs_160_map >> (2 * i) & 3;
|
|
|
|
if (mcs_160 != IEEE80211_VHT_MCS_NOT_SUPPORTED) {
|
|
chains = max_t(u8, chains, i + 1);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return chains;
|
|
}
|
|
|
|
static bool
|
|
ieee80211_verify_peer_he_mcs_support(struct ieee80211_sub_if_data *sdata,
|
|
const struct cfg80211_bss_ies *ies,
|
|
const struct ieee80211_he_operation *he_op)
|
|
{
|
|
const struct element *he_cap_elem;
|
|
const struct ieee80211_he_cap_elem *he_cap;
|
|
struct ieee80211_he_mcs_nss_supp *he_mcs_nss_supp;
|
|
u16 mcs_80_map_tx, mcs_80_map_rx;
|
|
u16 ap_min_req_set;
|
|
int mcs_nss_size;
|
|
int nss;
|
|
|
|
he_cap_elem = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY,
|
|
ies->data, ies->len);
|
|
|
|
if (!he_cap_elem)
|
|
return false;
|
|
|
|
/* invalid HE IE */
|
|
if (he_cap_elem->datalen < 1 + sizeof(*he_cap)) {
|
|
sdata_info(sdata,
|
|
"Invalid HE elem, Disable HE\n");
|
|
return false;
|
|
}
|
|
|
|
/* skip one byte ext_tag_id */
|
|
he_cap = (void *)(he_cap_elem->data + 1);
|
|
mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap);
|
|
|
|
/* invalid HE IE */
|
|
if (he_cap_elem->datalen < 1 + sizeof(*he_cap) + mcs_nss_size) {
|
|
sdata_info(sdata,
|
|
"Invalid HE elem with nss size, Disable HE\n");
|
|
return false;
|
|
}
|
|
|
|
/* mcs_nss is right after he_cap info */
|
|
he_mcs_nss_supp = (void *)(he_cap + 1);
|
|
|
|
mcs_80_map_tx = le16_to_cpu(he_mcs_nss_supp->tx_mcs_80);
|
|
mcs_80_map_rx = le16_to_cpu(he_mcs_nss_supp->rx_mcs_80);
|
|
|
|
/* P802.11-REVme/D0.3
|
|
* 27.1.1 Introduction to the HE PHY
|
|
* ...
|
|
* An HE STA shall support the following features:
|
|
* ...
|
|
* Single spatial stream HE-MCSs 0 to 7 (transmit and receive) in all
|
|
* supported channel widths for HE SU PPDUs
|
|
*/
|
|
if ((mcs_80_map_tx & 0x3) == IEEE80211_HE_MCS_NOT_SUPPORTED ||
|
|
(mcs_80_map_rx & 0x3) == IEEE80211_HE_MCS_NOT_SUPPORTED) {
|
|
sdata_info(sdata,
|
|
"Missing mandatory rates for 1 Nss, rx 0x%x, tx 0x%x, disable HE\n",
|
|
mcs_80_map_tx, mcs_80_map_rx);
|
|
return false;
|
|
}
|
|
|
|
if (!he_op)
|
|
return true;
|
|
|
|
ap_min_req_set = le16_to_cpu(he_op->he_mcs_nss_set);
|
|
|
|
/*
|
|
* Apparently iPhone 13 (at least iOS version 15.3.1) sets this to all
|
|
* zeroes, which is nonsense, and completely inconsistent with itself
|
|
* (it doesn't have 8 streams). Accept the settings in this case anyway.
|
|
*/
|
|
if (!ap_min_req_set)
|
|
return true;
|
|
|
|
/* make sure the AP is consistent with itself
|
|
*
|
|
* P802.11-REVme/D0.3
|
|
* 26.17.1 Basic HE BSS operation
|
|
*
|
|
* A STA that is operating in an HE BSS shall be able to receive and
|
|
* transmit at each of the <HE-MCS, NSS> tuple values indicated by the
|
|
* Basic HE-MCS And NSS Set field of the HE Operation parameter of the
|
|
* MLME-START.request primitive and shall be able to receive at each of
|
|
* the <HE-MCS, NSS> tuple values indicated by the Supported HE-MCS and
|
|
* NSS Set field in the HE Capabilities parameter of the MLMESTART.request
|
|
* primitive
|
|
*/
|
|
for (nss = 8; nss > 0; nss--) {
|
|
u8 ap_op_val = (ap_min_req_set >> (2 * (nss - 1))) & 3;
|
|
u8 ap_rx_val;
|
|
u8 ap_tx_val;
|
|
|
|
if (ap_op_val == IEEE80211_HE_MCS_NOT_SUPPORTED)
|
|
continue;
|
|
|
|
ap_rx_val = (mcs_80_map_rx >> (2 * (nss - 1))) & 3;
|
|
ap_tx_val = (mcs_80_map_tx >> (2 * (nss - 1))) & 3;
|
|
|
|
if (ap_rx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
|
|
ap_tx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
|
|
ap_rx_val < ap_op_val || ap_tx_val < ap_op_val) {
|
|
sdata_info(sdata,
|
|
"Invalid rates for %d Nss, rx %d, tx %d oper %d, disable HE\n",
|
|
nss, ap_rx_val, ap_rx_val, ap_op_val);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
ieee80211_verify_sta_he_mcs_support(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_supported_band *sband,
|
|
const struct ieee80211_he_operation *he_op)
|
|
{
|
|
const struct ieee80211_sta_he_cap *sta_he_cap =
|
|
ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
|
|
u16 ap_min_req_set;
|
|
int i;
|
|
|
|
if (!sta_he_cap || !he_op)
|
|
return false;
|
|
|
|
ap_min_req_set = le16_to_cpu(he_op->he_mcs_nss_set);
|
|
|
|
/*
|
|
* Apparently iPhone 13 (at least iOS version 15.3.1) sets this to all
|
|
* zeroes, which is nonsense, and completely inconsistent with itself
|
|
* (it doesn't have 8 streams). Accept the settings in this case anyway.
|
|
*/
|
|
if (!ap_min_req_set)
|
|
return true;
|
|
|
|
/* Need to go over for 80MHz, 160MHz and for 80+80 */
|
|
for (i = 0; i < 3; i++) {
|
|
const struct ieee80211_he_mcs_nss_supp *sta_mcs_nss_supp =
|
|
&sta_he_cap->he_mcs_nss_supp;
|
|
u16 sta_mcs_map_rx =
|
|
le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i]);
|
|
u16 sta_mcs_map_tx =
|
|
le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i + 1]);
|
|
u8 nss;
|
|
bool verified = true;
|
|
|
|
/*
|
|
* For each band there is a maximum of 8 spatial streams
|
|
* possible. Each of the sta_mcs_map_* is a 16-bit struct built
|
|
* of 2 bits per NSS (1-8), with the values defined in enum
|
|
* ieee80211_he_mcs_support. Need to make sure STA TX and RX
|
|
* capabilities aren't less than the AP's minimum requirements
|
|
* for this HE BSS per SS.
|
|
* It is enough to find one such band that meets the reqs.
|
|
*/
|
|
for (nss = 8; nss > 0; nss--) {
|
|
u8 sta_rx_val = (sta_mcs_map_rx >> (2 * (nss - 1))) & 3;
|
|
u8 sta_tx_val = (sta_mcs_map_tx >> (2 * (nss - 1))) & 3;
|
|
u8 ap_val = (ap_min_req_set >> (2 * (nss - 1))) & 3;
|
|
|
|
if (ap_val == IEEE80211_HE_MCS_NOT_SUPPORTED)
|
|
continue;
|
|
|
|
/*
|
|
* Make sure the HE AP doesn't require MCSs that aren't
|
|
* supported by the client as required by spec
|
|
*
|
|
* P802.11-REVme/D0.3
|
|
* 26.17.1 Basic HE BSS operation
|
|
*
|
|
* An HE STA shall not attempt to join * (MLME-JOIN.request primitive)
|
|
* a BSS, unless it supports (i.e., is able to both transmit and
|
|
* receive using) all of the <HE-MCS, NSS> tuples in the basic
|
|
* HE-MCS and NSS set.
|
|
*/
|
|
if (sta_rx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
|
|
sta_tx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
|
|
(ap_val > sta_rx_val) || (ap_val > sta_tx_val)) {
|
|
verified = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (verified)
|
|
return true;
|
|
}
|
|
|
|
/* If here, STA doesn't meet AP's HE min requirements */
|
|
return false;
|
|
}
|
|
|
|
static u8
|
|
ieee80211_get_eht_cap_mcs_nss(const struct ieee80211_sta_he_cap *sta_he_cap,
|
|
const struct ieee80211_sta_eht_cap *sta_eht_cap,
|
|
unsigned int idx, int bw)
|
|
{
|
|
u8 he_phy_cap0 = sta_he_cap->he_cap_elem.phy_cap_info[0];
|
|
u8 eht_phy_cap0 = sta_eht_cap->eht_cap_elem.phy_cap_info[0];
|
|
|
|
/* handle us being a 20 MHz-only EHT STA - with four values
|
|
* for MCS 0-7, 8-9, 10-11, 12-13.
|
|
*/
|
|
if (!(he_phy_cap0 & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_MASK_ALL))
|
|
return sta_eht_cap->eht_mcs_nss_supp.only_20mhz.rx_tx_max_nss[idx];
|
|
|
|
/* the others have MCS 0-9 together, rather than separately from 0-7 */
|
|
if (idx > 0)
|
|
idx--;
|
|
|
|
switch (bw) {
|
|
case 0:
|
|
return sta_eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_max_nss[idx];
|
|
case 1:
|
|
if (!(he_phy_cap0 &
|
|
(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
|
|
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G)))
|
|
return 0xff; /* pass check */
|
|
return sta_eht_cap->eht_mcs_nss_supp.bw._160.rx_tx_max_nss[idx];
|
|
case 2:
|
|
if (!(eht_phy_cap0 & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ))
|
|
return 0xff; /* pass check */
|
|
return sta_eht_cap->eht_mcs_nss_supp.bw._320.rx_tx_max_nss[idx];
|
|
}
|
|
|
|
WARN_ON(1);
|
|
return 0;
|
|
}
|
|
|
|
static bool
|
|
ieee80211_verify_sta_eht_mcs_support(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_supported_band *sband,
|
|
const struct ieee80211_eht_operation *eht_op)
|
|
{
|
|
const struct ieee80211_sta_he_cap *sta_he_cap =
|
|
ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
|
|
const struct ieee80211_sta_eht_cap *sta_eht_cap =
|
|
ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif);
|
|
const struct ieee80211_eht_mcs_nss_supp_20mhz_only *req;
|
|
unsigned int i;
|
|
|
|
if (!sta_he_cap || !sta_eht_cap || !eht_op)
|
|
return false;
|
|
|
|
req = &eht_op->basic_mcs_nss;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(req->rx_tx_max_nss); i++) {
|
|
u8 req_rx_nss, req_tx_nss;
|
|
unsigned int bw;
|
|
|
|
req_rx_nss = u8_get_bits(req->rx_tx_max_nss[i],
|
|
IEEE80211_EHT_MCS_NSS_RX);
|
|
req_tx_nss = u8_get_bits(req->rx_tx_max_nss[i],
|
|
IEEE80211_EHT_MCS_NSS_TX);
|
|
|
|
for (bw = 0; bw < 3; bw++) {
|
|
u8 have, have_rx_nss, have_tx_nss;
|
|
|
|
have = ieee80211_get_eht_cap_mcs_nss(sta_he_cap,
|
|
sta_eht_cap,
|
|
i, bw);
|
|
have_rx_nss = u8_get_bits(have,
|
|
IEEE80211_EHT_MCS_NSS_RX);
|
|
have_tx_nss = u8_get_bits(have,
|
|
IEEE80211_EHT_MCS_NSS_TX);
|
|
|
|
if (req_rx_nss > have_rx_nss ||
|
|
req_tx_nss > have_tx_nss)
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_link_data *link,
|
|
struct cfg80211_bss *cbss,
|
|
bool mlo,
|
|
ieee80211_conn_flags_t *conn_flags)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
const struct ieee80211_ht_cap *ht_cap = NULL;
|
|
const struct ieee80211_ht_operation *ht_oper = NULL;
|
|
const struct ieee80211_vht_operation *vht_oper = NULL;
|
|
const struct ieee80211_he_operation *he_oper = NULL;
|
|
const struct ieee80211_eht_operation *eht_oper = NULL;
|
|
const struct ieee80211_s1g_oper_ie *s1g_oper = NULL;
|
|
struct ieee80211_supported_band *sband;
|
|
struct cfg80211_chan_def chandef;
|
|
bool is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ;
|
|
bool is_5ghz = cbss->channel->band == NL80211_BAND_5GHZ;
|
|
bool supports_mlo = false;
|
|
struct ieee80211_bss *bss = (void *)cbss->priv;
|
|
struct ieee80211_elems_parse_params parse_params = {
|
|
.link_id = -1,
|
|
.from_ap = true,
|
|
};
|
|
struct ieee802_11_elems *elems;
|
|
const struct cfg80211_bss_ies *ies;
|
|
int ret;
|
|
u32 i;
|
|
bool have_80mhz;
|
|
|
|
lockdep_assert_wiphy(local->hw.wiphy);
|
|
|
|
rcu_read_lock();
|
|
|
|
ies = rcu_dereference(cbss->ies);
|
|
parse_params.start = ies->data;
|
|
parse_params.len = ies->len;
|
|
elems = ieee802_11_parse_elems_full(&parse_params);
|
|
if (!elems) {
|
|
rcu_read_unlock();
|
|
return -ENOMEM;
|
|
}
|
|
|
|
sband = local->hw.wiphy->bands[cbss->channel->band];
|
|
|
|
*conn_flags &= ~(IEEE80211_CONN_DISABLE_40MHZ |
|
|
IEEE80211_CONN_DISABLE_80P80MHZ |
|
|
IEEE80211_CONN_DISABLE_160MHZ);
|
|
|
|
/* disable HT/VHT/HE if we don't support them */
|
|
if (!sband->ht_cap.ht_supported && !is_6ghz) {
|
|
mlme_dbg(sdata, "HT not supported, disabling HT/VHT/HE/EHT\n");
|
|
*conn_flags |= IEEE80211_CONN_DISABLE_HT;
|
|
*conn_flags |= IEEE80211_CONN_DISABLE_VHT;
|
|
*conn_flags |= IEEE80211_CONN_DISABLE_HE;
|
|
*conn_flags |= IEEE80211_CONN_DISABLE_EHT;
|
|
}
|
|
|
|
if (!sband->vht_cap.vht_supported && is_5ghz) {
|
|
mlme_dbg(sdata, "VHT not supported, disabling VHT/HE/EHT\n");
|
|
*conn_flags |= IEEE80211_CONN_DISABLE_VHT;
|
|
*conn_flags |= IEEE80211_CONN_DISABLE_HE;
|
|
*conn_flags |= IEEE80211_CONN_DISABLE_EHT;
|
|
}
|
|
|
|
if (!ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif)) {
|
|
mlme_dbg(sdata, "HE not supported, disabling HE and EHT\n");
|
|
*conn_flags |= IEEE80211_CONN_DISABLE_HE;
|
|
*conn_flags |= IEEE80211_CONN_DISABLE_EHT;
|
|
}
|
|
|
|
if (!ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif)) {
|
|
mlme_dbg(sdata, "EHT not supported, disabling EHT\n");
|
|
*conn_flags |= IEEE80211_CONN_DISABLE_EHT;
|
|
}
|
|
|
|
if (!(*conn_flags & IEEE80211_CONN_DISABLE_HT) && !is_6ghz) {
|
|
ht_oper = elems->ht_operation;
|
|
ht_cap = elems->ht_cap_elem;
|
|
|
|
if (!ht_cap) {
|
|
*conn_flags |= IEEE80211_CONN_DISABLE_HT;
|
|
ht_oper = NULL;
|
|
}
|
|
}
|
|
|
|
if (!(*conn_flags & IEEE80211_CONN_DISABLE_VHT) && !is_6ghz) {
|
|
vht_oper = elems->vht_operation;
|
|
if (vht_oper && !ht_oper) {
|
|
vht_oper = NULL;
|
|
sdata_info(sdata,
|
|
"AP advertised VHT without HT, disabling HT/VHT/HE\n");
|
|
*conn_flags |= IEEE80211_CONN_DISABLE_HT;
|
|
*conn_flags |= IEEE80211_CONN_DISABLE_VHT;
|
|
*conn_flags |= IEEE80211_CONN_DISABLE_HE;
|
|
*conn_flags |= IEEE80211_CONN_DISABLE_EHT;
|
|
}
|
|
|
|
if (!elems->vht_cap_elem) {
|
|
*conn_flags |= IEEE80211_CONN_DISABLE_VHT;
|
|
vht_oper = NULL;
|
|
}
|
|
}
|
|
|
|
if (!(*conn_flags & IEEE80211_CONN_DISABLE_HE)) {
|
|
he_oper = elems->he_operation;
|
|
|
|
if (link && is_6ghz) {
|
|
struct ieee80211_bss_conf *bss_conf;
|
|
u8 j = 0;
|
|
|
|
bss_conf = link->conf;
|
|
|
|
if (elems->pwr_constr_elem)
|
|
bss_conf->pwr_reduction = *elems->pwr_constr_elem;
|
|
|
|
BUILD_BUG_ON(ARRAY_SIZE(bss_conf->tx_pwr_env) !=
|
|
ARRAY_SIZE(elems->tx_pwr_env));
|
|
|
|
for (i = 0; i < elems->tx_pwr_env_num; i++) {
|
|
if (elems->tx_pwr_env_len[i] >
|
|
sizeof(bss_conf->tx_pwr_env[j]))
|
|
continue;
|
|
|
|
bss_conf->tx_pwr_env_num++;
|
|
memcpy(&bss_conf->tx_pwr_env[j], elems->tx_pwr_env[i],
|
|
elems->tx_pwr_env_len[i]);
|
|
j++;
|
|
}
|
|
}
|
|
|
|
if (!ieee80211_verify_peer_he_mcs_support(sdata, ies, he_oper) ||
|
|
!ieee80211_verify_sta_he_mcs_support(sdata, sband, he_oper))
|
|
*conn_flags |= IEEE80211_CONN_DISABLE_HE |
|
|
IEEE80211_CONN_DISABLE_EHT;
|
|
}
|
|
|
|
/*
|
|
* EHT requires HE to be supported as well. Specifically for 6 GHz
|
|
* channels, the operation channel information can only be deduced from
|
|
* both the 6 GHz operation information (from the HE operation IE) and
|
|
* EHT operation.
|
|
*/
|
|
if (!(*conn_flags &
|
|
(IEEE80211_CONN_DISABLE_HE |
|
|
IEEE80211_CONN_DISABLE_EHT)) &&
|
|
he_oper) {
|
|
const struct cfg80211_bss_ies *cbss_ies;
|
|
const struct element *eht_ml_elem;
|
|
const u8 *eht_oper_ie;
|
|
|
|
cbss_ies = rcu_dereference(cbss->ies);
|
|
eht_oper_ie = cfg80211_find_ext_ie(WLAN_EID_EXT_EHT_OPERATION,
|
|
cbss_ies->data, cbss_ies->len);
|
|
if (eht_oper_ie && eht_oper_ie[1] >=
|
|
1 + sizeof(struct ieee80211_eht_operation))
|
|
eht_oper = (void *)(eht_oper_ie + 3);
|
|
else
|
|
eht_oper = NULL;
|
|
|
|
if (!ieee80211_verify_sta_eht_mcs_support(sdata, sband, eht_oper))
|
|
*conn_flags |= IEEE80211_CONN_DISABLE_EHT;
|
|
|
|
eht_ml_elem = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_MULTI_LINK,
|
|
cbss_ies->data, cbss_ies->len);
|
|
|
|
/* data + 1 / datalen - 1 since it's an extended element */
|
|
if (!(*conn_flags & IEEE80211_CONN_DISABLE_EHT) &&
|
|
eht_ml_elem &&
|
|
ieee80211_mle_type_ok(eht_ml_elem->data + 1,
|
|
IEEE80211_ML_CONTROL_TYPE_BASIC,
|
|
eht_ml_elem->datalen - 1)) {
|
|
supports_mlo = true;
|
|
|
|
sdata->vif.cfg.eml_cap =
|
|
ieee80211_mle_get_eml_cap(eht_ml_elem->data + 1);
|
|
sdata->vif.cfg.eml_med_sync_delay =
|
|
ieee80211_mle_get_eml_med_sync_delay(eht_ml_elem->data + 1);
|
|
}
|
|
}
|
|
|
|
/* Allow VHT if at least one channel on the sband supports 80 MHz */
|
|
have_80mhz = false;
|
|
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 (!have_80mhz) {
|
|
sdata_info(sdata, "80 MHz not supported, disabling VHT\n");
|
|
*conn_flags |= IEEE80211_CONN_DISABLE_VHT;
|
|
}
|
|
|
|
if (sband->band == NL80211_BAND_S1GHZ) {
|
|
s1g_oper = elems->s1g_oper;
|
|
if (!s1g_oper)
|
|
sdata_info(sdata,
|
|
"AP missing S1G operation element?\n");
|
|
}
|
|
|
|
*conn_flags |=
|
|
ieee80211_determine_chantype(sdata, link, *conn_flags,
|
|
sband,
|
|
cbss->channel,
|
|
bss->vht_cap_info,
|
|
ht_oper, vht_oper,
|
|
he_oper, eht_oper,
|
|
s1g_oper,
|
|
&chandef, false);
|
|
|
|
if (link)
|
|
link->needed_rx_chains =
|
|
min(ieee80211_max_rx_chains(link, cbss),
|
|
local->rx_chains);
|
|
|
|
rcu_read_unlock();
|
|
/* the element data was RCU protected so no longer valid anyway */
|
|
kfree(elems);
|
|
elems = NULL;
|
|
|
|
if (*conn_flags & IEEE80211_CONN_DISABLE_HE && is_6ghz) {
|
|
sdata_info(sdata, "Rejecting non-HE 6/7 GHz connection");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (mlo && !supports_mlo) {
|
|
sdata_info(sdata, "Rejecting MLO as it is not supported by AP\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!link)
|
|
return 0;
|
|
|
|
/* will change later if needed */
|
|
link->smps_mode = IEEE80211_SMPS_OFF;
|
|
|
|
/*
|
|
* If this fails (possibly due to channel context sharing
|
|
* on incompatible channels, e.g. 80+80 and 160 sharing the
|
|
* same control channel) try to use a smaller bandwidth.
|
|
*/
|
|
ret = ieee80211_link_use_channel(link, &chandef,
|
|
IEEE80211_CHANCTX_SHARED);
|
|
|
|
/* don't downgrade for 5 and 10 MHz channels, though. */
|
|
if (chandef.width == NL80211_CHAN_WIDTH_5 ||
|
|
chandef.width == NL80211_CHAN_WIDTH_10)
|
|
goto out;
|
|
|
|
while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
|
|
*conn_flags |=
|
|
ieee80211_chandef_downgrade(&chandef);
|
|
ret = ieee80211_link_use_channel(link, &chandef,
|
|
IEEE80211_CHANCTX_SHARED);
|
|
}
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static bool ieee80211_get_dtim(const struct cfg80211_bss_ies *ies,
|
|
u8 *dtim_count, u8 *dtim_period)
|
|
{
|
|
const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM, ies->data, ies->len);
|
|
const u8 *idx_ie = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX, ies->data,
|
|
ies->len);
|
|
const struct ieee80211_tim_ie *tim = NULL;
|
|
const struct ieee80211_bssid_index *idx;
|
|
bool valid = tim_ie && tim_ie[1] >= 2;
|
|
|
|
if (valid)
|
|
tim = (void *)(tim_ie + 2);
|
|
|
|
if (dtim_count)
|
|
*dtim_count = valid ? tim->dtim_count : 0;
|
|
|
|
if (dtim_period)
|
|
*dtim_period = valid ? tim->dtim_period : 0;
|
|
|
|
/* Check if value is overridden by non-transmitted profile */
|
|
if (!idx_ie || idx_ie[1] < 3)
|
|
return valid;
|
|
|
|
idx = (void *)(idx_ie + 2);
|
|
|
|
if (dtim_count)
|
|
*dtim_count = idx->dtim_count;
|
|
|
|
if (dtim_period)
|
|
*dtim_period = idx->dtim_period;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_mgmt *mgmt,
|
|
struct ieee802_11_elems *elems,
|
|
const u8 *elem_start, unsigned int elem_len)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
|
|
struct ieee80211_local *local = sdata->local;
|
|
unsigned int link_id;
|
|
struct sta_info *sta;
|
|
u64 changed[IEEE80211_MLD_MAX_NUM_LINKS] = {};
|
|
u16 valid_links = 0, dormant_links = 0;
|
|
int err;
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
/*
|
|
* station info was already allocated and inserted before
|
|
* the association and should be available to us
|
|
*/
|
|
sta = sta_info_get(sdata, assoc_data->ap_addr);
|
|
if (WARN_ON(!sta))
|
|
goto out_err;
|
|
|
|
if (ieee80211_vif_is_mld(&sdata->vif)) {
|
|
for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
|
|
if (!assoc_data->link[link_id].bss)
|
|
continue;
|
|
|
|
valid_links |= BIT(link_id);
|
|
if (assoc_data->link[link_id].disabled)
|
|
dormant_links |= BIT(link_id);
|
|
|
|
if (link_id != assoc_data->assoc_link_id) {
|
|
err = ieee80211_sta_allocate_link(sta, link_id);
|
|
if (err)
|
|
goto out_err;
|
|
}
|
|
}
|
|
|
|
ieee80211_vif_set_links(sdata, valid_links, dormant_links);
|
|
}
|
|
|
|
for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
|
|
struct cfg80211_bss *cbss = assoc_data->link[link_id].bss;
|
|
struct ieee80211_link_data *link;
|
|
struct link_sta_info *link_sta;
|
|
|
|
if (!cbss)
|
|
continue;
|
|
|
|
link = sdata_dereference(sdata->link[link_id], sdata);
|
|
if (WARN_ON(!link))
|
|
goto out_err;
|
|
|
|
if (ieee80211_vif_is_mld(&sdata->vif))
|
|
link_info(link,
|
|
"local address %pM, AP link address %pM%s\n",
|
|
link->conf->addr,
|
|
assoc_data->link[link_id].bss->bssid,
|
|
link_id == assoc_data->assoc_link_id ?
|
|
" (assoc)" : "");
|
|
|
|
link_sta = rcu_dereference_protected(sta->link[link_id],
|
|
lockdep_is_held(&local->hw.wiphy->mtx));
|
|
if (WARN_ON(!link_sta))
|
|
goto out_err;
|
|
|
|
if (!link->u.mgd.have_beacon) {
|
|
const struct cfg80211_bss_ies *ies;
|
|
|
|
rcu_read_lock();
|
|
ies = rcu_dereference(cbss->beacon_ies);
|
|
if (ies)
|
|
link->u.mgd.have_beacon = true;
|
|
else
|
|
ies = rcu_dereference(cbss->ies);
|
|
ieee80211_get_dtim(ies,
|
|
&link->conf->sync_dtim_count,
|
|
&link->u.mgd.dtim_period);
|
|
link->conf->beacon_int = cbss->beacon_interval;
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
link->conf->dtim_period = link->u.mgd.dtim_period ?: 1;
|
|
|
|
if (link_id != assoc_data->assoc_link_id) {
|
|
err = ieee80211_prep_channel(sdata, link, cbss, true,
|
|
&link->u.mgd.conn_flags);
|
|
if (err) {
|
|
link_info(link, "prep_channel failed\n");
|
|
goto out_err;
|
|
}
|
|
}
|
|
|
|
err = ieee80211_mgd_setup_link_sta(link, sta, link_sta,
|
|
assoc_data->link[link_id].bss);
|
|
if (err)
|
|
goto out_err;
|
|
|
|
if (!ieee80211_assoc_config_link(link, link_sta,
|
|
assoc_data->link[link_id].bss,
|
|
mgmt, elem_start, elem_len,
|
|
&changed[link_id]))
|
|
goto out_err;
|
|
|
|
if (assoc_data->link[link_id].status != WLAN_STATUS_SUCCESS) {
|
|
valid_links &= ~BIT(link_id);
|
|
ieee80211_sta_remove_link(sta, link_id);
|
|
continue;
|
|
}
|
|
|
|
if (link_id != assoc_data->assoc_link_id) {
|
|
err = ieee80211_sta_activate_link(sta, link_id);
|
|
if (err)
|
|
goto out_err;
|
|
}
|
|
}
|
|
|
|
/* links might have changed due to rejected ones, set them again */
|
|
ieee80211_vif_set_links(sdata, valid_links, dormant_links);
|
|
|
|
rate_control_rate_init(sta);
|
|
|
|
if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) {
|
|
set_sta_flag(sta, WLAN_STA_MFP);
|
|
sta->sta.mfp = true;
|
|
} else {
|
|
sta->sta.mfp = false;
|
|
}
|
|
|
|
ieee80211_sta_set_max_amsdu_subframes(sta, elems->ext_capab,
|
|
elems->ext_capab_len);
|
|
|
|
sta->sta.wme = (elems->wmm_param || elems->s1g_capab) &&
|
|
local->hw.queues >= IEEE80211_NUM_ACS;
|
|
|
|
err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
|
|
if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
|
|
err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
|
|
if (err) {
|
|
sdata_info(sdata,
|
|
"failed to move station %pM to desired state\n",
|
|
sta->sta.addr);
|
|
WARN_ON(__sta_info_destroy(sta));
|
|
goto out_err;
|
|
}
|
|
|
|
if (sdata->wdev.use_4addr)
|
|
drv_sta_set_4addr(local, sdata, &sta->sta, true);
|
|
|
|
ieee80211_set_associated(sdata, assoc_data, changed);
|
|
|
|
/*
|
|
* If we're using 4-addr mode, let the AP know that we're
|
|
* doing so, so that it can create the STA VLAN on its side
|
|
*/
|
|
if (ifmgd->use_4addr)
|
|
ieee80211_send_4addr_nullfunc(local, sdata);
|
|
|
|
/*
|
|
* Start timer to probe the connection to the AP now.
|
|
* Also start the timer that will detect beacon loss.
|
|
*/
|
|
ieee80211_sta_reset_beacon_monitor(sdata);
|
|
ieee80211_sta_reset_conn_monitor(sdata);
|
|
|
|
return true;
|
|
out_err:
|
|
eth_zero_addr(sdata->vif.cfg.ap_addr);
|
|
return false;
|
|
}
|
|
|
|
static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_mgmt *mgmt,
|
|
size_t len)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
|
|
u16 capab_info, status_code, aid;
|
|
struct ieee80211_elems_parse_params parse_params = {
|
|
.bss = NULL,
|
|
.link_id = -1,
|
|
.from_ap = true,
|
|
};
|
|
struct ieee802_11_elems *elems;
|
|
int ac;
|
|
const u8 *elem_start;
|
|
unsigned int elem_len;
|
|
bool reassoc;
|
|
struct ieee80211_event event = {
|
|
.type = MLME_EVENT,
|
|
.u.mlme.data = ASSOC_EVENT,
|
|
};
|
|
struct ieee80211_prep_tx_info info = {};
|
|
struct cfg80211_rx_assoc_resp_data resp = {
|
|
.uapsd_queues = -1,
|
|
};
|
|
u8 ap_mld_addr[ETH_ALEN] __aligned(2);
|
|
unsigned int link_id;
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
if (!assoc_data)
|
|
return;
|
|
|
|
if (!ether_addr_equal(assoc_data->ap_addr, mgmt->bssid) ||
|
|
!ether_addr_equal(assoc_data->ap_addr, mgmt->sa))
|
|
return;
|
|
|
|
/*
|
|
* AssocResp and ReassocResp have identical structure, so process both
|
|
* of them in this function.
|
|
*/
|
|
|
|
if (len < 24 + 6)
|
|
return;
|
|
|
|
reassoc = ieee80211_is_reassoc_resp(mgmt->frame_control);
|
|
capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
|
|
status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
|
|
if (assoc_data->s1g)
|
|
elem_start = mgmt->u.s1g_assoc_resp.variable;
|
|
else
|
|
elem_start = mgmt->u.assoc_resp.variable;
|
|
|
|
/*
|
|
* Note: this may not be perfect, AP might misbehave - if
|
|
* anyone needs to rely on perfect complete notification
|
|
* with the exact right subtype, then we need to track what
|
|
* we actually transmitted.
|
|
*/
|
|
info.subtype = reassoc ? IEEE80211_STYPE_REASSOC_REQ :
|
|
IEEE80211_STYPE_ASSOC_REQ;
|
|
|
|
if (assoc_data->fils_kek_len &&
|
|
fils_decrypt_assoc_resp(sdata, (u8 *)mgmt, &len, assoc_data) < 0)
|
|
return;
|
|
|
|
elem_len = len - (elem_start - (u8 *)mgmt);
|
|
parse_params.start = elem_start;
|
|
parse_params.len = elem_len;
|
|
elems = ieee802_11_parse_elems_full(&parse_params);
|
|
if (!elems)
|
|
goto notify_driver;
|
|
|
|
if (elems->aid_resp)
|
|
aid = le16_to_cpu(elems->aid_resp->aid);
|
|
else if (assoc_data->s1g)
|
|
aid = 0; /* TODO */
|
|
else
|
|
aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
|
|
|
|
/*
|
|
* The 5 MSB of the AID field are reserved
|
|
* (802.11-2016 9.4.1.8 AID field)
|
|
*/
|
|
aid &= 0x7ff;
|
|
|
|
sdata_info(sdata,
|
|
"RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
|
|
reassoc ? "Rea" : "A", assoc_data->ap_addr,
|
|
capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
|
|
|
|
ifmgd->broken_ap = false;
|
|
|
|
if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
|
|
elems->timeout_int &&
|
|
elems->timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
|
|
u32 tu, ms;
|
|
|
|
cfg80211_assoc_comeback(sdata->dev, assoc_data->ap_addr,
|
|
le32_to_cpu(elems->timeout_int->value));
|
|
|
|
tu = le32_to_cpu(elems->timeout_int->value);
|
|
ms = tu * 1024 / 1000;
|
|
sdata_info(sdata,
|
|
"%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
|
|
assoc_data->ap_addr, tu, ms);
|
|
assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
|
|
assoc_data->timeout_started = true;
|
|
if (ms > IEEE80211_ASSOC_TIMEOUT)
|
|
run_again(sdata, assoc_data->timeout);
|
|
goto notify_driver;
|
|
}
|
|
|
|
if (status_code != WLAN_STATUS_SUCCESS) {
|
|
sdata_info(sdata, "%pM denied association (code=%d)\n",
|
|
assoc_data->ap_addr, status_code);
|
|
event.u.mlme.status = MLME_DENIED;
|
|
event.u.mlme.reason = status_code;
|
|
drv_event_callback(sdata->local, sdata, &event);
|
|
} else {
|
|
if (aid == 0 || aid > IEEE80211_MAX_AID) {
|
|
sdata_info(sdata,
|
|
"invalid AID value %d (out of range), turn off PS\n",
|
|
aid);
|
|
aid = 0;
|
|
ifmgd->broken_ap = true;
|
|
}
|
|
|
|
if (ieee80211_vif_is_mld(&sdata->vif)) {
|
|
if (!elems->ml_basic) {
|
|
sdata_info(sdata,
|
|
"MLO association with %pM but no multi-link element in response!\n",
|
|
assoc_data->ap_addr);
|
|
goto abandon_assoc;
|
|
}
|
|
|
|
if (le16_get_bits(elems->ml_basic->control,
|
|
IEEE80211_ML_CONTROL_TYPE) !=
|
|
IEEE80211_ML_CONTROL_TYPE_BASIC) {
|
|
sdata_info(sdata,
|
|
"bad multi-link element (control=0x%x)\n",
|
|
le16_to_cpu(elems->ml_basic->control));
|
|
goto abandon_assoc;
|
|
} else {
|
|
struct ieee80211_mle_basic_common_info *common;
|
|
|
|
common = (void *)elems->ml_basic->variable;
|
|
|
|
if (memcmp(assoc_data->ap_addr,
|
|
common->mld_mac_addr, ETH_ALEN)) {
|
|
sdata_info(sdata,
|
|
"AP MLD MAC address mismatch: got %pM expected %pM\n",
|
|
common->mld_mac_addr,
|
|
assoc_data->ap_addr);
|
|
goto abandon_assoc;
|
|
}
|
|
}
|
|
}
|
|
|
|
sdata->vif.cfg.aid = aid;
|
|
|
|
if (!ieee80211_assoc_success(sdata, mgmt, elems,
|
|
elem_start, elem_len)) {
|
|
/* oops -- internal error -- send timeout for now */
|
|
ieee80211_destroy_assoc_data(sdata, ASSOC_TIMEOUT);
|
|
goto notify_driver;
|
|
}
|
|
event.u.mlme.status = MLME_SUCCESS;
|
|
drv_event_callback(sdata->local, sdata, &event);
|
|
sdata_info(sdata, "associated\n");
|
|
|
|
info.success = 1;
|
|
}
|
|
|
|
for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
|
|
struct ieee80211_link_data *link;
|
|
|
|
if (!assoc_data->link[link_id].bss)
|
|
continue;
|
|
|
|
resp.links[link_id].bss = assoc_data->link[link_id].bss;
|
|
ether_addr_copy(resp.links[link_id].addr,
|
|
assoc_data->link[link_id].addr);
|
|
resp.links[link_id].status = assoc_data->link[link_id].status;
|
|
|
|
link = sdata_dereference(sdata->link[link_id], sdata);
|
|
if (!link)
|
|
continue;
|
|
|
|
/* get uapsd queues configuration - same for all links */
|
|
resp.uapsd_queues = 0;
|
|
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
|
|
if (link->tx_conf[ac].uapsd)
|
|
resp.uapsd_queues |= ieee80211_ac_to_qos_mask[ac];
|
|
}
|
|
|
|
if (ieee80211_vif_is_mld(&sdata->vif)) {
|
|
ether_addr_copy(ap_mld_addr, sdata->vif.cfg.ap_addr);
|
|
resp.ap_mld_addr = ap_mld_addr;
|
|
}
|
|
|
|
ieee80211_destroy_assoc_data(sdata,
|
|
status_code == WLAN_STATUS_SUCCESS ?
|
|
ASSOC_SUCCESS :
|
|
ASSOC_REJECTED);
|
|
|
|
resp.buf = (u8 *)mgmt;
|
|
resp.len = len;
|
|
resp.req_ies = ifmgd->assoc_req_ies;
|
|
resp.req_ies_len = ifmgd->assoc_req_ies_len;
|
|
cfg80211_rx_assoc_resp(sdata->dev, &resp);
|
|
notify_driver:
|
|
drv_mgd_complete_tx(sdata->local, sdata, &info);
|
|
kfree(elems);
|
|
return;
|
|
abandon_assoc:
|
|
ieee80211_destroy_assoc_data(sdata, ASSOC_ABANDON);
|
|
goto notify_driver;
|
|
}
|
|
|
|
static void ieee80211_rx_bss_info(struct ieee80211_link_data *link,
|
|
struct ieee80211_mgmt *mgmt, size_t len,
|
|
struct ieee80211_rx_status *rx_status)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = link->sdata;
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_bss *bss;
|
|
struct ieee80211_channel *channel;
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
channel = ieee80211_get_channel_khz(local->hw.wiphy,
|
|
ieee80211_rx_status_to_khz(rx_status));
|
|
if (!channel)
|
|
return;
|
|
|
|
bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, channel);
|
|
if (bss) {
|
|
link->conf->beacon_rate = bss->beacon_rate;
|
|
ieee80211_rx_bss_put(local, bss);
|
|
}
|
|
}
|
|
|
|
|
|
static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_link_data *link,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = link->sdata;
|
|
struct ieee80211_mgmt *mgmt = (void *)skb->data;
|
|
struct ieee80211_if_managed *ifmgd;
|
|
struct ieee80211_rx_status *rx_status = (void *) skb->cb;
|
|
struct ieee80211_channel *channel;
|
|
size_t baselen, len = skb->len;
|
|
|
|
ifmgd = &sdata->u.mgd;
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
/*
|
|
* According to Draft P802.11ax D6.0 clause 26.17.2.3.2:
|
|
* "If a 6 GHz AP receives a Probe Request frame and responds with
|
|
* a Probe Response frame [..], the Address 1 field of the Probe
|
|
* Response frame shall be set to the broadcast address [..]"
|
|
* So, on 6GHz band we should also accept broadcast responses.
|
|
*/
|
|
channel = ieee80211_get_channel(sdata->local->hw.wiphy,
|
|
rx_status->freq);
|
|
if (!channel)
|
|
return;
|
|
|
|
if (!ether_addr_equal(mgmt->da, sdata->vif.addr) &&
|
|
(channel->band != NL80211_BAND_6GHZ ||
|
|
!is_broadcast_ether_addr(mgmt->da)))
|
|
return; /* ignore ProbeResp to foreign address */
|
|
|
|
baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
|
|
if (baselen > len)
|
|
return;
|
|
|
|
ieee80211_rx_bss_info(link, mgmt, len, rx_status);
|
|
|
|
if (ifmgd->associated &&
|
|
ether_addr_equal(mgmt->bssid, link->u.mgd.bssid))
|
|
ieee80211_reset_ap_probe(sdata);
|
|
}
|
|
|
|
/*
|
|
* This is the canonical list of information elements we care about,
|
|
* the filter code also gives us all changes to the Microsoft OUI
|
|
* (00:50:F2) vendor IE which is used for WMM which we need to track,
|
|
* as well as the DTPC IE (part of the Cisco OUI) used for signaling
|
|
* changes to requested client power.
|
|
*
|
|
* We implement beacon filtering in software since that means we can
|
|
* avoid processing the frame here and in cfg80211, and userspace
|
|
* will not be able to tell whether the hardware supports it or not.
|
|
*
|
|
* XXX: This list needs to be dynamic -- userspace needs to be able to
|
|
* add items it requires. It also needs to be able to tell us to
|
|
* look out for other vendor IEs.
|
|
*/
|
|
static const u64 care_about_ies =
|
|
(1ULL << WLAN_EID_COUNTRY) |
|
|
(1ULL << WLAN_EID_ERP_INFO) |
|
|
(1ULL << WLAN_EID_CHANNEL_SWITCH) |
|
|
(1ULL << WLAN_EID_PWR_CONSTRAINT) |
|
|
(1ULL << WLAN_EID_HT_CAPABILITY) |
|
|
(1ULL << WLAN_EID_HT_OPERATION) |
|
|
(1ULL << WLAN_EID_EXT_CHANSWITCH_ANN);
|
|
|
|
static void ieee80211_handle_beacon_sig(struct ieee80211_link_data *link,
|
|
struct ieee80211_if_managed *ifmgd,
|
|
struct ieee80211_bss_conf *bss_conf,
|
|
struct ieee80211_local *local,
|
|
struct ieee80211_rx_status *rx_status)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = link->sdata;
|
|
|
|
/* Track average RSSI from the Beacon frames of the current AP */
|
|
|
|
if (!link->u.mgd.tracking_signal_avg) {
|
|
link->u.mgd.tracking_signal_avg = true;
|
|
ewma_beacon_signal_init(&link->u.mgd.ave_beacon_signal);
|
|
link->u.mgd.last_cqm_event_signal = 0;
|
|
link->u.mgd.count_beacon_signal = 1;
|
|
link->u.mgd.last_ave_beacon_signal = 0;
|
|
} else {
|
|
link->u.mgd.count_beacon_signal++;
|
|
}
|
|
|
|
ewma_beacon_signal_add(&link->u.mgd.ave_beacon_signal,
|
|
-rx_status->signal);
|
|
|
|
if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
|
|
link->u.mgd.count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
|
|
int sig = -ewma_beacon_signal_read(&link->u.mgd.ave_beacon_signal);
|
|
int last_sig = link->u.mgd.last_ave_beacon_signal;
|
|
struct ieee80211_event event = {
|
|
.type = RSSI_EVENT,
|
|
};
|
|
|
|
/*
|
|
* if signal crosses either of the boundaries, invoke callback
|
|
* with appropriate parameters
|
|
*/
|
|
if (sig > ifmgd->rssi_max_thold &&
|
|
(last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
|
|
link->u.mgd.last_ave_beacon_signal = sig;
|
|
event.u.rssi.data = RSSI_EVENT_HIGH;
|
|
drv_event_callback(local, sdata, &event);
|
|
} else if (sig < ifmgd->rssi_min_thold &&
|
|
(last_sig >= ifmgd->rssi_max_thold ||
|
|
last_sig == 0)) {
|
|
link->u.mgd.last_ave_beacon_signal = sig;
|
|
event.u.rssi.data = RSSI_EVENT_LOW;
|
|
drv_event_callback(local, sdata, &event);
|
|
}
|
|
}
|
|
|
|
if (bss_conf->cqm_rssi_thold &&
|
|
link->u.mgd.count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
|
|
!(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
|
|
int sig = -ewma_beacon_signal_read(&link->u.mgd.ave_beacon_signal);
|
|
int last_event = link->u.mgd.last_cqm_event_signal;
|
|
int thold = bss_conf->cqm_rssi_thold;
|
|
int hyst = bss_conf->cqm_rssi_hyst;
|
|
|
|
if (sig < thold &&
|
|
(last_event == 0 || sig < last_event - hyst)) {
|
|
link->u.mgd.last_cqm_event_signal = sig;
|
|
ieee80211_cqm_rssi_notify(
|
|
&sdata->vif,
|
|
NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
|
|
sig, GFP_KERNEL);
|
|
} else if (sig > thold &&
|
|
(last_event == 0 || sig > last_event + hyst)) {
|
|
link->u.mgd.last_cqm_event_signal = sig;
|
|
ieee80211_cqm_rssi_notify(
|
|
&sdata->vif,
|
|
NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
|
|
sig, GFP_KERNEL);
|
|
}
|
|
}
|
|
|
|
if (bss_conf->cqm_rssi_low &&
|
|
link->u.mgd.count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
|
|
int sig = -ewma_beacon_signal_read(&link->u.mgd.ave_beacon_signal);
|
|
int last_event = link->u.mgd.last_cqm_event_signal;
|
|
int low = bss_conf->cqm_rssi_low;
|
|
int high = bss_conf->cqm_rssi_high;
|
|
|
|
if (sig < low &&
|
|
(last_event == 0 || last_event >= low)) {
|
|
link->u.mgd.last_cqm_event_signal = sig;
|
|
ieee80211_cqm_rssi_notify(
|
|
&sdata->vif,
|
|
NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
|
|
sig, GFP_KERNEL);
|
|
} else if (sig > high &&
|
|
(last_event == 0 || last_event <= high)) {
|
|
link->u.mgd.last_cqm_event_signal = sig;
|
|
ieee80211_cqm_rssi_notify(
|
|
&sdata->vif,
|
|
NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
|
|
sig, GFP_KERNEL);
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool ieee80211_rx_our_beacon(const u8 *tx_bssid,
|
|
struct cfg80211_bss *bss)
|
|
{
|
|
if (ether_addr_equal(tx_bssid, bss->bssid))
|
|
return true;
|
|
if (!bss->transmitted_bss)
|
|
return false;
|
|
return ether_addr_equal(tx_bssid, bss->transmitted_bss->bssid);
|
|
}
|
|
|
|
static bool ieee80211_config_puncturing(struct ieee80211_link_data *link,
|
|
const struct ieee80211_eht_operation *eht_oper,
|
|
u64 *changed)
|
|
{
|
|
u16 bitmap = 0, extracted;
|
|
|
|
if ((eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT) &&
|
|
(eht_oper->params &
|
|
IEEE80211_EHT_OPER_DISABLED_SUBCHANNEL_BITMAP_PRESENT)) {
|
|
const struct ieee80211_eht_operation_info *info =
|
|
(void *)eht_oper->optional;
|
|
const u8 *disable_subchannel_bitmap = info->optional;
|
|
|
|
bitmap = get_unaligned_le16(disable_subchannel_bitmap);
|
|
}
|
|
|
|
extracted = ieee80211_extract_dis_subch_bmap(eht_oper,
|
|
&link->conf->chandef,
|
|
bitmap);
|
|
|
|
/* accept if there are no changes */
|
|
if (!(*changed & BSS_CHANGED_BANDWIDTH) &&
|
|
extracted == link->conf->eht_puncturing)
|
|
return true;
|
|
|
|
if (!cfg80211_valid_disable_subchannel_bitmap(&bitmap,
|
|
&link->conf->chandef)) {
|
|
link_info(link,
|
|
"Got an invalid disable subchannel bitmap from AP %pM: bitmap = 0x%x, bw = 0x%x. disconnect\n",
|
|
link->u.mgd.bssid,
|
|
bitmap,
|
|
link->conf->chandef.width);
|
|
return false;
|
|
}
|
|
|
|
ieee80211_handle_puncturing_bitmap(link, eht_oper, bitmap, changed);
|
|
return true;
|
|
}
|
|
|
|
static void ieee80211_ml_reconf_work(struct wiphy *wiphy,
|
|
struct wiphy_work *work)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata =
|
|
container_of(work, struct ieee80211_sub_if_data,
|
|
u.mgd.ml_reconf_work.work);
|
|
u16 new_valid_links, new_active_links, new_dormant_links;
|
|
int ret;
|
|
|
|
if (!sdata->u.mgd.removed_links)
|
|
return;
|
|
|
|
sdata_info(sdata,
|
|
"MLO Reconfiguration: work: valid=0x%x, removed=0x%x\n",
|
|
sdata->vif.valid_links, sdata->u.mgd.removed_links);
|
|
|
|
new_valid_links = sdata->vif.valid_links & ~sdata->u.mgd.removed_links;
|
|
if (new_valid_links == sdata->vif.valid_links)
|
|
return;
|
|
|
|
if (!new_valid_links ||
|
|
!(new_valid_links & ~sdata->vif.dormant_links)) {
|
|
sdata_info(sdata, "No valid links after reconfiguration\n");
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
new_active_links = sdata->vif.active_links & ~sdata->u.mgd.removed_links;
|
|
if (new_active_links != sdata->vif.active_links) {
|
|
if (!new_active_links)
|
|
new_active_links =
|
|
BIT(ffs(new_valid_links &
|
|
~sdata->vif.dormant_links) - 1);
|
|
|
|
ret = ieee80211_set_active_links(&sdata->vif, new_active_links);
|
|
if (ret) {
|
|
sdata_info(sdata,
|
|
"Failed setting active links\n");
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
new_dormant_links = sdata->vif.dormant_links & ~sdata->u.mgd.removed_links;
|
|
|
|
ret = ieee80211_vif_set_links(sdata, new_valid_links,
|
|
new_dormant_links);
|
|
if (ret)
|
|
sdata_info(sdata, "Failed setting valid links\n");
|
|
|
|
ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_MLD_VALID_LINKS);
|
|
|
|
out:
|
|
if (!ret)
|
|
cfg80211_links_removed(sdata->dev, sdata->u.mgd.removed_links);
|
|
else
|
|
__ieee80211_disconnect(sdata);
|
|
|
|
sdata->u.mgd.removed_links = 0;
|
|
}
|
|
|
|
static void ieee80211_ml_reconfiguration(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee802_11_elems *elems)
|
|
{
|
|
const struct ieee80211_multi_link_elem *ml;
|
|
const struct element *sub;
|
|
ssize_t ml_len;
|
|
unsigned long removed_links = 0;
|
|
u16 link_removal_timeout[IEEE80211_MLD_MAX_NUM_LINKS] = {};
|
|
u8 link_id;
|
|
u32 delay;
|
|
|
|
if (!ieee80211_vif_is_mld(&sdata->vif) || !elems->ml_reconf)
|
|
return;
|
|
|
|
ml_len = cfg80211_defragment_element(elems->ml_reconf_elem,
|
|
elems->ie_start,
|
|
elems->total_len,
|
|
elems->scratch_pos,
|
|
elems->scratch + elems->scratch_len -
|
|
elems->scratch_pos,
|
|
WLAN_EID_FRAGMENT);
|
|
if (ml_len < 0)
|
|
return;
|
|
|
|
elems->ml_reconf = (const void *)elems->scratch_pos;
|
|
elems->ml_reconf_len = ml_len;
|
|
ml = elems->ml_reconf;
|
|
|
|
/* Directly parse the sub elements as the common information doesn't
|
|
* hold any useful information.
|
|
*/
|
|
for_each_mle_subelement(sub, (u8 *)ml, ml_len) {
|
|
struct ieee80211_mle_per_sta_profile *prof = (void *)sub->data;
|
|
u8 *pos = prof->variable;
|
|
u16 control;
|
|
|
|
if (sub->id != IEEE80211_MLE_SUBELEM_PER_STA_PROFILE)
|
|
continue;
|
|
|
|
if (!ieee80211_mle_reconf_sta_prof_size_ok(sub->data,
|
|
sub->datalen))
|
|
return;
|
|
|
|
control = le16_to_cpu(prof->control);
|
|
link_id = control & IEEE80211_MLE_STA_RECONF_CONTROL_LINK_ID;
|
|
|
|
removed_links |= BIT(link_id);
|
|
|
|
/* the MAC address should not be included, but handle it */
|
|
if (control &
|
|
IEEE80211_MLE_STA_RECONF_CONTROL_STA_MAC_ADDR_PRESENT)
|
|
pos += 6;
|
|
|
|
/* According to Draft P802.11be_D3.0, the control should
|
|
* include the AP Removal Timer present. If the AP Removal Timer
|
|
* is not present assume immediate removal.
|
|
*/
|
|
if (control &
|
|
IEEE80211_MLE_STA_RECONF_CONTROL_AP_REM_TIMER_PRESENT)
|
|
link_removal_timeout[link_id] = le16_to_cpu(*(__le16 *)pos);
|
|
}
|
|
|
|
removed_links &= sdata->vif.valid_links;
|
|
if (!removed_links) {
|
|
/* In case the removal was cancelled, abort it */
|
|
if (sdata->u.mgd.removed_links) {
|
|
sdata->u.mgd.removed_links = 0;
|
|
wiphy_delayed_work_cancel(sdata->local->hw.wiphy,
|
|
&sdata->u.mgd.ml_reconf_work);
|
|
}
|
|
return;
|
|
}
|
|
|
|
delay = 0;
|
|
for_each_set_bit(link_id, &removed_links, IEEE80211_MLD_MAX_NUM_LINKS) {
|
|
struct ieee80211_bss_conf *link_conf =
|
|
sdata_dereference(sdata->vif.link_conf[link_id], sdata);
|
|
u32 link_delay;
|
|
|
|
if (!link_conf) {
|
|
removed_links &= ~BIT(link_id);
|
|
continue;
|
|
}
|
|
|
|
link_delay = link_conf->beacon_int *
|
|
link_removal_timeout[link_id];
|
|
|
|
if (!delay)
|
|
delay = link_delay;
|
|
else
|
|
delay = min(delay, link_delay);
|
|
}
|
|
|
|
sdata->u.mgd.removed_links = removed_links;
|
|
wiphy_delayed_work_queue(sdata->local->hw.wiphy,
|
|
&sdata->u.mgd.ml_reconf_work,
|
|
TU_TO_JIFFIES(delay));
|
|
}
|
|
|
|
static void ieee80211_tid_to_link_map_work(struct wiphy *wiphy,
|
|
struct wiphy_work *work)
|
|
{
|
|
u16 new_active_links, new_dormant_links;
|
|
struct ieee80211_sub_if_data *sdata =
|
|
container_of(work, struct ieee80211_sub_if_data,
|
|
u.mgd.ttlm_work.work);
|
|
int ret;
|
|
|
|
new_active_links = sdata->u.mgd.ttlm_info.map &
|
|
sdata->vif.valid_links;
|
|
new_dormant_links = ~sdata->u.mgd.ttlm_info.map &
|
|
sdata->vif.valid_links;
|
|
if (!new_active_links) {
|
|
ieee80211_disconnect(&sdata->vif, false);
|
|
return;
|
|
}
|
|
|
|
ieee80211_vif_set_links(sdata, sdata->vif.valid_links, 0);
|
|
new_active_links = BIT(ffs(new_active_links) - 1);
|
|
ieee80211_set_active_links(&sdata->vif, new_active_links);
|
|
|
|
ret = ieee80211_vif_set_links(sdata, sdata->vif.valid_links,
|
|
new_dormant_links);
|
|
|
|
sdata->u.mgd.ttlm_info.active = true;
|
|
sdata->u.mgd.ttlm_info.switch_time = 0;
|
|
|
|
if (!ret)
|
|
ieee80211_vif_cfg_change_notify(sdata,
|
|
BSS_CHANGED_MLD_VALID_LINKS);
|
|
}
|
|
|
|
static u16 ieee80211_get_ttlm(u8 bm_size, u8 *data)
|
|
{
|
|
if (bm_size == 1)
|
|
return *data;
|
|
else
|
|
return get_unaligned_le16(data);
|
|
}
|
|
|
|
static int
|
|
ieee80211_parse_adv_t2l(struct ieee80211_sub_if_data *sdata,
|
|
const struct ieee80211_ttlm_elem *ttlm,
|
|
struct ieee80211_adv_ttlm_info *ttlm_info)
|
|
{
|
|
/* The element size was already validated in
|
|
* ieee80211_tid_to_link_map_size_ok()
|
|
*/
|
|
u8 control, link_map_presence, map_size, tid;
|
|
u8 *pos;
|
|
|
|
memset(ttlm_info, 0, sizeof(*ttlm_info));
|
|
pos = (void *)ttlm->optional;
|
|
control = ttlm->control;
|
|
|
|
if ((control & IEEE80211_TTLM_CONTROL_DEF_LINK_MAP) ||
|
|
!(control & IEEE80211_TTLM_CONTROL_SWITCH_TIME_PRESENT))
|
|
return 0;
|
|
|
|
if ((control & IEEE80211_TTLM_CONTROL_DIRECTION) !=
|
|
IEEE80211_TTLM_DIRECTION_BOTH) {
|
|
sdata_info(sdata, "Invalid advertised T2L map direction\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
link_map_presence = *pos;
|
|
pos++;
|
|
|
|
ttlm_info->switch_time = get_unaligned_le16(pos);
|
|
pos += 2;
|
|
|
|
if (control & IEEE80211_TTLM_CONTROL_EXPECTED_DUR_PRESENT) {
|
|
ttlm_info->duration = pos[0] | pos[1] << 8 | pos[2] << 16;
|
|
pos += 3;
|
|
}
|
|
|
|
if (control & IEEE80211_TTLM_CONTROL_LINK_MAP_SIZE)
|
|
map_size = 1;
|
|
else
|
|
map_size = 2;
|
|
|
|
/* According to Draft P802.11be_D3.0 clause 35.3.7.1.7, an AP MLD shall
|
|
* not advertise a TID-to-link mapping that does not map all TIDs to the
|
|
* same link set, reject frame if not all links have mapping
|
|
*/
|
|
if (link_map_presence != 0xff) {
|
|
sdata_info(sdata,
|
|
"Invalid advertised T2L mapping presence indicator\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ttlm_info->map = ieee80211_get_ttlm(map_size, pos);
|
|
if (!ttlm_info->map) {
|
|
sdata_info(sdata,
|
|
"Invalid advertised T2L map for TID 0\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
pos += map_size;
|
|
|
|
for (tid = 1; tid < 8; tid++) {
|
|
u16 map = ieee80211_get_ttlm(map_size, pos);
|
|
|
|
if (map != ttlm_info->map) {
|
|
sdata_info(sdata, "Invalid advertised T2L map for tid %d\n",
|
|
tid);
|
|
return -EINVAL;
|
|
}
|
|
|
|
pos += map_size;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void ieee80211_process_adv_ttlm(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee802_11_elems *elems,
|
|
u64 beacon_ts)
|
|
{
|
|
u8 i;
|
|
int ret;
|
|
|
|
if (!ieee80211_vif_is_mld(&sdata->vif))
|
|
return;
|
|
|
|
if (!elems->ttlm_num) {
|
|
if (sdata->u.mgd.ttlm_info.switch_time) {
|
|
/* if a planned TID-to-link mapping was cancelled -
|
|
* abort it
|
|
*/
|
|
wiphy_delayed_work_cancel(sdata->local->hw.wiphy,
|
|
&sdata->u.mgd.ttlm_work);
|
|
} else if (sdata->u.mgd.ttlm_info.active) {
|
|
/* if no TID-to-link element, set to default mapping in
|
|
* which all TIDs are mapped to all setup links
|
|
*/
|
|
ret = ieee80211_vif_set_links(sdata,
|
|
sdata->vif.valid_links,
|
|
0);
|
|
if (ret) {
|
|
sdata_info(sdata, "Failed setting valid/dormant links\n");
|
|
return;
|
|
}
|
|
ieee80211_vif_cfg_change_notify(sdata,
|
|
BSS_CHANGED_MLD_VALID_LINKS);
|
|
}
|
|
memset(&sdata->u.mgd.ttlm_info, 0,
|
|
sizeof(sdata->u.mgd.ttlm_info));
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < elems->ttlm_num; i++) {
|
|
struct ieee80211_adv_ttlm_info ttlm_info;
|
|
u32 res;
|
|
|
|
res = ieee80211_parse_adv_t2l(sdata, elems->ttlm[i],
|
|
&ttlm_info);
|
|
|
|
if (res) {
|
|
__ieee80211_disconnect(sdata);
|
|
return;
|
|
}
|
|
|
|
if (ttlm_info.switch_time) {
|
|
u32 st_us, delay = 0;
|
|
u32 ts_l26 = beacon_ts & GENMASK(25, 0);
|
|
|
|
/* The t2l map switch time is indicated with a partial
|
|
* TSF value, convert it to TSF and calc the delay
|
|
* to the start time.
|
|
*/
|
|
st_us = ieee80211_tu_to_usec(ttlm_info.switch_time);
|
|
if (st_us > ts_l26)
|
|
delay = st_us - ts_l26;
|
|
else
|
|
continue;
|
|
|
|
sdata->u.mgd.ttlm_info = ttlm_info;
|
|
wiphy_delayed_work_cancel(sdata->local->hw.wiphy,
|
|
&sdata->u.mgd.ttlm_work);
|
|
wiphy_delayed_work_queue(sdata->local->hw.wiphy,
|
|
&sdata->u.mgd.ttlm_work,
|
|
usecs_to_jiffies(delay));
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void ieee80211_rx_mgmt_beacon(struct ieee80211_link_data *link,
|
|
struct ieee80211_hdr *hdr, size_t len,
|
|
struct ieee80211_rx_status *rx_status)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = link->sdata;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
|
|
struct ieee80211_vif_cfg *vif_cfg = &sdata->vif.cfg;
|
|
struct ieee80211_mgmt *mgmt = (void *) hdr;
|
|
size_t baselen;
|
|
struct ieee802_11_elems *elems;
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_chanctx_conf *chanctx_conf;
|
|
struct ieee80211_supported_band *sband;
|
|
struct ieee80211_channel *chan;
|
|
struct link_sta_info *link_sta;
|
|
struct sta_info *sta;
|
|
u64 changed = 0;
|
|
bool erp_valid;
|
|
u8 erp_value = 0;
|
|
u32 ncrc = 0;
|
|
u8 *bssid, *variable = mgmt->u.beacon.variable;
|
|
u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
|
|
struct ieee80211_elems_parse_params parse_params = {
|
|
.link_id = -1,
|
|
.from_ap = true,
|
|
};
|
|
|
|
lockdep_assert_wiphy(local->hw.wiphy);
|
|
|
|
/* Process beacon from the current BSS */
|
|
bssid = ieee80211_get_bssid(hdr, len, sdata->vif.type);
|
|
if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
|
|
struct ieee80211_ext *ext = (void *) mgmt;
|
|
|
|
if (ieee80211_is_s1g_short_beacon(ext->frame_control))
|
|
variable = ext->u.s1g_short_beacon.variable;
|
|
else
|
|
variable = ext->u.s1g_beacon.variable;
|
|
}
|
|
|
|
baselen = (u8 *) variable - (u8 *) mgmt;
|
|
if (baselen > len)
|
|
return;
|
|
|
|
parse_params.start = variable;
|
|
parse_params.len = len - baselen;
|
|
|
|
rcu_read_lock();
|
|
chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
|
|
if (!chanctx_conf) {
|
|
rcu_read_unlock();
|
|
return;
|
|
}
|
|
|
|
if (ieee80211_rx_status_to_khz(rx_status) !=
|
|
ieee80211_channel_to_khz(chanctx_conf->def.chan)) {
|
|
rcu_read_unlock();
|
|
return;
|
|
}
|
|
chan = chanctx_conf->def.chan;
|
|
rcu_read_unlock();
|
|
|
|
if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
|
|
!WARN_ON(ieee80211_vif_is_mld(&sdata->vif)) &&
|
|
ieee80211_rx_our_beacon(bssid, ifmgd->assoc_data->link[0].bss)) {
|
|
parse_params.bss = ifmgd->assoc_data->link[0].bss;
|
|
elems = ieee802_11_parse_elems_full(&parse_params);
|
|
if (!elems)
|
|
return;
|
|
|
|
ieee80211_rx_bss_info(link, mgmt, len, rx_status);
|
|
|
|
if (elems->dtim_period)
|
|
link->u.mgd.dtim_period = elems->dtim_period;
|
|
link->u.mgd.have_beacon = true;
|
|
ifmgd->assoc_data->need_beacon = false;
|
|
if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
|
|
link->conf->sync_tsf =
|
|
le64_to_cpu(mgmt->u.beacon.timestamp);
|
|
link->conf->sync_device_ts =
|
|
rx_status->device_timestamp;
|
|
link->conf->sync_dtim_count = elems->dtim_count;
|
|
}
|
|
|
|
if (elems->mbssid_config_ie)
|
|
bss_conf->profile_periodicity =
|
|
elems->mbssid_config_ie->profile_periodicity;
|
|
else
|
|
bss_conf->profile_periodicity = 0;
|
|
|
|
if (elems->ext_capab_len >= 11 &&
|
|
(elems->ext_capab[10] & WLAN_EXT_CAPA11_EMA_SUPPORT))
|
|
bss_conf->ema_ap = true;
|
|
else
|
|
bss_conf->ema_ap = false;
|
|
|
|
/* continue assoc process */
|
|
ifmgd->assoc_data->timeout = jiffies;
|
|
ifmgd->assoc_data->timeout_started = true;
|
|
run_again(sdata, ifmgd->assoc_data->timeout);
|
|
kfree(elems);
|
|
return;
|
|
}
|
|
|
|
if (!ifmgd->associated ||
|
|
!ieee80211_rx_our_beacon(bssid, link->u.mgd.bss))
|
|
return;
|
|
bssid = link->u.mgd.bssid;
|
|
|
|
if (!(rx_status->flag & RX_FLAG_NO_SIGNAL_VAL))
|
|
ieee80211_handle_beacon_sig(link, ifmgd, bss_conf,
|
|
local, rx_status);
|
|
|
|
if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) {
|
|
mlme_dbg_ratelimited(sdata,
|
|
"cancelling AP probe due to a received beacon\n");
|
|
ieee80211_reset_ap_probe(sdata);
|
|
}
|
|
|
|
/*
|
|
* Push the beacon loss detection into the future since
|
|
* we are processing a beacon from the AP just now.
|
|
*/
|
|
ieee80211_sta_reset_beacon_monitor(sdata);
|
|
|
|
/* TODO: CRC urrently not calculated on S1G Beacon Compatibility
|
|
* element (which carries the beacon interval). Don't forget to add a
|
|
* bit to care_about_ies[] above if mac80211 is interested in a
|
|
* changing S1G element.
|
|
*/
|
|
if (!ieee80211_is_s1g_beacon(hdr->frame_control))
|
|
ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
|
|
parse_params.bss = link->u.mgd.bss;
|
|
parse_params.filter = care_about_ies;
|
|
parse_params.crc = ncrc;
|
|
elems = ieee802_11_parse_elems_full(&parse_params);
|
|
if (!elems)
|
|
return;
|
|
ncrc = elems->crc;
|
|
|
|
if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
|
|
ieee80211_check_tim(elems->tim, elems->tim_len, vif_cfg->aid)) {
|
|
if (local->hw.conf.dynamic_ps_timeout > 0) {
|
|
if (local->hw.conf.flags & IEEE80211_CONF_PS) {
|
|
local->hw.conf.flags &= ~IEEE80211_CONF_PS;
|
|
ieee80211_hw_config(local,
|
|
IEEE80211_CONF_CHANGE_PS);
|
|
}
|
|
ieee80211_send_nullfunc(local, sdata, false);
|
|
} else if (!local->pspolling && sdata->u.mgd.powersave) {
|
|
local->pspolling = true;
|
|
|
|
/*
|
|
* Here is assumed that the driver will be
|
|
* able to send ps-poll frame and receive a
|
|
* response even though power save mode is
|
|
* enabled, but some drivers might require
|
|
* to disable power save here. This needs
|
|
* to be investigated.
|
|
*/
|
|
ieee80211_send_pspoll(local, sdata);
|
|
}
|
|
}
|
|
|
|
if (sdata->vif.p2p ||
|
|
sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
|
|
struct ieee80211_p2p_noa_attr noa = {};
|
|
int ret;
|
|
|
|
ret = cfg80211_get_p2p_attr(variable,
|
|
len - baselen,
|
|
IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
|
|
(u8 *) &noa, sizeof(noa));
|
|
if (ret >= 2) {
|
|
if (link->u.mgd.p2p_noa_index != noa.index) {
|
|
/* valid noa_attr and index changed */
|
|
link->u.mgd.p2p_noa_index = noa.index;
|
|
memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa));
|
|
changed |= BSS_CHANGED_P2P_PS;
|
|
/*
|
|
* make sure we update all information, the CRC
|
|
* mechanism doesn't look at P2P attributes.
|
|
*/
|
|
link->u.mgd.beacon_crc_valid = false;
|
|
}
|
|
} else if (link->u.mgd.p2p_noa_index != -1) {
|
|
/* noa_attr not found and we had valid noa_attr before */
|
|
link->u.mgd.p2p_noa_index = -1;
|
|
memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
|
|
changed |= BSS_CHANGED_P2P_PS;
|
|
link->u.mgd.beacon_crc_valid = false;
|
|
}
|
|
}
|
|
|
|
if (link->u.mgd.csa_waiting_bcn)
|
|
ieee80211_chswitch_post_beacon(link);
|
|
|
|
/*
|
|
* Update beacon timing and dtim count on every beacon appearance. This
|
|
* will allow the driver to use the most updated values. Do it before
|
|
* comparing this one with last received beacon.
|
|
* IMPORTANT: These parameters would possibly be out of sync by the time
|
|
* the driver will use them. The synchronized view is currently
|
|
* guaranteed only in certain callbacks.
|
|
*/
|
|
if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY) &&
|
|
!ieee80211_is_s1g_beacon(hdr->frame_control)) {
|
|
link->conf->sync_tsf =
|
|
le64_to_cpu(mgmt->u.beacon.timestamp);
|
|
link->conf->sync_device_ts =
|
|
rx_status->device_timestamp;
|
|
link->conf->sync_dtim_count = elems->dtim_count;
|
|
}
|
|
|
|
if ((ncrc == link->u.mgd.beacon_crc && link->u.mgd.beacon_crc_valid) ||
|
|
ieee80211_is_s1g_short_beacon(mgmt->frame_control))
|
|
goto free;
|
|
link->u.mgd.beacon_crc = ncrc;
|
|
link->u.mgd.beacon_crc_valid = true;
|
|
|
|
ieee80211_rx_bss_info(link, mgmt, len, rx_status);
|
|
|
|
ieee80211_sta_process_chanswitch(link, rx_status->mactime,
|
|
rx_status->device_timestamp,
|
|
elems, true);
|
|
|
|
if (!link->u.mgd.disable_wmm_tracking &&
|
|
ieee80211_sta_wmm_params(local, link, elems->wmm_param,
|
|
elems->wmm_param_len,
|
|
elems->mu_edca_param_set))
|
|
changed |= BSS_CHANGED_QOS;
|
|
|
|
/*
|
|
* If we haven't had a beacon before, tell the driver about the
|
|
* DTIM period (and beacon timing if desired) now.
|
|
*/
|
|
if (!link->u.mgd.have_beacon) {
|
|
/* a few bogus AP send dtim_period = 0 or no TIM IE */
|
|
bss_conf->dtim_period = elems->dtim_period ?: 1;
|
|
|
|
changed |= BSS_CHANGED_BEACON_INFO;
|
|
link->u.mgd.have_beacon = true;
|
|
|
|
ieee80211_recalc_ps(local);
|
|
|
|
ieee80211_recalc_ps_vif(sdata);
|
|
}
|
|
|
|
if (elems->erp_info) {
|
|
erp_valid = true;
|
|
erp_value = elems->erp_info[0];
|
|
} else {
|
|
erp_valid = false;
|
|
}
|
|
|
|
if (!ieee80211_is_s1g_beacon(hdr->frame_control))
|
|
changed |= ieee80211_handle_bss_capability(link,
|
|
le16_to_cpu(mgmt->u.beacon.capab_info),
|
|
erp_valid, erp_value);
|
|
|
|
sta = sta_info_get(sdata, sdata->vif.cfg.ap_addr);
|
|
if (WARN_ON(!sta)) {
|
|
goto free;
|
|
}
|
|
link_sta = rcu_dereference_protected(sta->link[link->link_id],
|
|
lockdep_is_held(&local->hw.wiphy->mtx));
|
|
if (WARN_ON(!link_sta)) {
|
|
goto free;
|
|
}
|
|
|
|
if (WARN_ON(!link->conf->chandef.chan))
|
|
goto free;
|
|
|
|
sband = local->hw.wiphy->bands[link->conf->chandef.chan->band];
|
|
|
|
changed |= ieee80211_recalc_twt_req(sdata, sband, link, link_sta, elems);
|
|
|
|
if (ieee80211_config_bw(link, elems->ht_cap_elem,
|
|
elems->vht_cap_elem, elems->ht_operation,
|
|
elems->vht_operation, elems->he_operation,
|
|
elems->eht_operation,
|
|
elems->s1g_oper, bssid, &changed)) {
|
|
sdata_info(sdata,
|
|
"failed to follow AP %pM bandwidth change, disconnect\n",
|
|
bssid);
|
|
ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
|
|
WLAN_REASON_DEAUTH_LEAVING,
|
|
true, deauth_buf);
|
|
ieee80211_report_disconnect(sdata, deauth_buf,
|
|
sizeof(deauth_buf), true,
|
|
WLAN_REASON_DEAUTH_LEAVING,
|
|
false);
|
|
goto free;
|
|
}
|
|
|
|
if (elems->opmode_notif)
|
|
ieee80211_vht_handle_opmode(sdata, link_sta,
|
|
*elems->opmode_notif,
|
|
rx_status->band);
|
|
|
|
changed |= ieee80211_handle_pwr_constr(link, chan, mgmt,
|
|
elems->country_elem,
|
|
elems->country_elem_len,
|
|
elems->pwr_constr_elem,
|
|
elems->cisco_dtpc_elem);
|
|
|
|
if (elems->eht_operation &&
|
|
!(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_EHT)) {
|
|
if (!ieee80211_config_puncturing(link, elems->eht_operation,
|
|
&changed)) {
|
|
ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
|
|
WLAN_REASON_DEAUTH_LEAVING,
|
|
true, deauth_buf);
|
|
ieee80211_report_disconnect(sdata, deauth_buf,
|
|
sizeof(deauth_buf), true,
|
|
WLAN_REASON_DEAUTH_LEAVING,
|
|
false);
|
|
goto free;
|
|
}
|
|
}
|
|
|
|
ieee80211_ml_reconfiguration(sdata, elems);
|
|
ieee80211_process_adv_ttlm(sdata, elems,
|
|
le64_to_cpu(mgmt->u.beacon.timestamp));
|
|
|
|
ieee80211_link_info_change_notify(sdata, link, changed);
|
|
free:
|
|
kfree(elems);
|
|
}
|
|
|
|
void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct ieee80211_link_data *link = &sdata->deflink;
|
|
struct ieee80211_rx_status *rx_status;
|
|
struct ieee80211_hdr *hdr;
|
|
u16 fc;
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
rx_status = (struct ieee80211_rx_status *) skb->cb;
|
|
hdr = (struct ieee80211_hdr *) skb->data;
|
|
fc = le16_to_cpu(hdr->frame_control);
|
|
|
|
switch (fc & IEEE80211_FCTL_STYPE) {
|
|
case IEEE80211_STYPE_S1G_BEACON:
|
|
ieee80211_rx_mgmt_beacon(link, hdr, skb->len, rx_status);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct ieee80211_link_data *link = &sdata->deflink;
|
|
struct ieee80211_rx_status *rx_status;
|
|
struct ieee80211_mgmt *mgmt;
|
|
u16 fc;
|
|
int ies_len;
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
rx_status = (struct ieee80211_rx_status *) skb->cb;
|
|
mgmt = (struct ieee80211_mgmt *) skb->data;
|
|
fc = le16_to_cpu(mgmt->frame_control);
|
|
|
|
if (rx_status->link_valid) {
|
|
link = sdata_dereference(sdata->link[rx_status->link_id],
|
|
sdata);
|
|
if (!link)
|
|
return;
|
|
}
|
|
|
|
switch (fc & IEEE80211_FCTL_STYPE) {
|
|
case IEEE80211_STYPE_BEACON:
|
|
ieee80211_rx_mgmt_beacon(link, (void *)mgmt,
|
|
skb->len, rx_status);
|
|
break;
|
|
case IEEE80211_STYPE_PROBE_RESP:
|
|
ieee80211_rx_mgmt_probe_resp(link, skb);
|
|
break;
|
|
case IEEE80211_STYPE_AUTH:
|
|
ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
|
|
break;
|
|
case IEEE80211_STYPE_DEAUTH:
|
|
ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
|
|
break;
|
|
case IEEE80211_STYPE_DISASSOC:
|
|
ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
|
|
break;
|
|
case IEEE80211_STYPE_ASSOC_RESP:
|
|
case IEEE80211_STYPE_REASSOC_RESP:
|
|
ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len);
|
|
break;
|
|
case IEEE80211_STYPE_ACTION:
|
|
if (!sdata->u.mgd.associated ||
|
|
!ether_addr_equal(mgmt->bssid, sdata->vif.cfg.ap_addr))
|
|
break;
|
|
|
|
if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
|
|
struct ieee802_11_elems *elems;
|
|
|
|
ies_len = skb->len -
|
|
offsetof(struct ieee80211_mgmt,
|
|
u.action.u.chan_switch.variable);
|
|
|
|
if (ies_len < 0)
|
|
break;
|
|
|
|
/* CSA IE cannot be overridden, no need for BSSID */
|
|
elems = ieee802_11_parse_elems(
|
|
mgmt->u.action.u.chan_switch.variable,
|
|
ies_len, true, NULL);
|
|
|
|
if (elems && !elems->parse_error)
|
|
ieee80211_sta_process_chanswitch(link,
|
|
rx_status->mactime,
|
|
rx_status->device_timestamp,
|
|
elems, false);
|
|
kfree(elems);
|
|
} else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
|
|
struct ieee802_11_elems *elems;
|
|
|
|
ies_len = skb->len -
|
|
offsetof(struct ieee80211_mgmt,
|
|
u.action.u.ext_chan_switch.variable);
|
|
|
|
if (ies_len < 0)
|
|
break;
|
|
|
|
/*
|
|
* extended CSA IE can't be overridden, no need for
|
|
* BSSID
|
|
*/
|
|
elems = ieee802_11_parse_elems(
|
|
mgmt->u.action.u.ext_chan_switch.variable,
|
|
ies_len, true, NULL);
|
|
|
|
if (elems && !elems->parse_error) {
|
|
/* for the handling code pretend it was an IE */
|
|
elems->ext_chansw_ie =
|
|
&mgmt->u.action.u.ext_chan_switch.data;
|
|
|
|
ieee80211_sta_process_chanswitch(link,
|
|
rx_status->mactime,
|
|
rx_status->device_timestamp,
|
|
elems, false);
|
|
}
|
|
|
|
kfree(elems);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void ieee80211_sta_timer(struct timer_list *t)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata =
|
|
from_timer(sdata, t, u.mgd.timer);
|
|
|
|
wiphy_work_queue(sdata->local->hw.wiphy, &sdata->work);
|
|
}
|
|
|
|
void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
|
|
u8 reason, bool tx)
|
|
{
|
|
u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
|
|
|
|
ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
|
|
tx, frame_buf);
|
|
|
|
ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
|
|
reason, false);
|
|
}
|
|
|
|
static int ieee80211_auth(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
|
|
u32 tx_flags = 0;
|
|
u16 trans = 1;
|
|
u16 status = 0;
|
|
struct ieee80211_prep_tx_info info = {
|
|
.subtype = IEEE80211_STYPE_AUTH,
|
|
};
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
if (WARN_ON_ONCE(!auth_data))
|
|
return -EINVAL;
|
|
|
|
auth_data->tries++;
|
|
|
|
if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
|
|
sdata_info(sdata, "authentication with %pM timed out\n",
|
|
auth_data->ap_addr);
|
|
|
|
/*
|
|
* Most likely AP is not in the range so remove the
|
|
* bss struct for that AP.
|
|
*/
|
|
cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss);
|
|
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
if (auth_data->algorithm == WLAN_AUTH_SAE)
|
|
info.duration = jiffies_to_msecs(IEEE80211_AUTH_TIMEOUT_SAE);
|
|
|
|
info.link_id = auth_data->link_id;
|
|
drv_mgd_prepare_tx(local, sdata, &info);
|
|
|
|
sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
|
|
auth_data->ap_addr, auth_data->tries,
|
|
IEEE80211_AUTH_MAX_TRIES);
|
|
|
|
auth_data->expected_transaction = 2;
|
|
|
|
if (auth_data->algorithm == WLAN_AUTH_SAE) {
|
|
trans = auth_data->sae_trans;
|
|
status = auth_data->sae_status;
|
|
auth_data->expected_transaction = trans;
|
|
}
|
|
|
|
if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
|
|
tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
|
|
IEEE80211_TX_INTFL_MLME_CONN_TX;
|
|
|
|
ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
|
|
auth_data->data, auth_data->data_len,
|
|
auth_data->ap_addr, auth_data->ap_addr,
|
|
NULL, 0, 0, tx_flags);
|
|
|
|
if (tx_flags == 0) {
|
|
if (auth_data->algorithm == WLAN_AUTH_SAE)
|
|
auth_data->timeout = jiffies +
|
|
IEEE80211_AUTH_TIMEOUT_SAE;
|
|
else
|
|
auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
|
|
} else {
|
|
auth_data->timeout =
|
|
round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG);
|
|
}
|
|
|
|
auth_data->timeout_started = true;
|
|
run_again(sdata, auth_data->timeout);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
|
|
struct ieee80211_local *local = sdata->local;
|
|
int ret;
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
assoc_data->tries++;
|
|
if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
|
|
sdata_info(sdata, "association with %pM timed out\n",
|
|
assoc_data->ap_addr);
|
|
|
|
/*
|
|
* Most likely AP is not in the range so remove the
|
|
* bss struct for that AP.
|
|
*/
|
|
cfg80211_unlink_bss(local->hw.wiphy,
|
|
assoc_data->link[assoc_data->assoc_link_id].bss);
|
|
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
sdata_info(sdata, "associate with %pM (try %d/%d)\n",
|
|
assoc_data->ap_addr, assoc_data->tries,
|
|
IEEE80211_ASSOC_MAX_TRIES);
|
|
ret = ieee80211_send_assoc(sdata);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
|
|
assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
|
|
assoc_data->timeout_started = true;
|
|
run_again(sdata, assoc_data->timeout);
|
|
} else {
|
|
assoc_data->timeout =
|
|
round_jiffies_up(jiffies +
|
|
IEEE80211_ASSOC_TIMEOUT_LONG);
|
|
assoc_data->timeout_started = true;
|
|
run_again(sdata, assoc_data->timeout);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
|
|
__le16 fc, bool acked)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
|
|
sdata->u.mgd.status_fc = fc;
|
|
sdata->u.mgd.status_acked = acked;
|
|
sdata->u.mgd.status_received = true;
|
|
|
|
wiphy_work_queue(local->hw.wiphy, &sdata->work);
|
|
}
|
|
|
|
void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
if (ifmgd->status_received) {
|
|
__le16 fc = ifmgd->status_fc;
|
|
bool status_acked = ifmgd->status_acked;
|
|
|
|
ifmgd->status_received = false;
|
|
if (ifmgd->auth_data && ieee80211_is_auth(fc)) {
|
|
if (status_acked) {
|
|
if (ifmgd->auth_data->algorithm ==
|
|
WLAN_AUTH_SAE)
|
|
ifmgd->auth_data->timeout =
|
|
jiffies +
|
|
IEEE80211_AUTH_TIMEOUT_SAE;
|
|
else
|
|
ifmgd->auth_data->timeout =
|
|
jiffies +
|
|
IEEE80211_AUTH_TIMEOUT_SHORT;
|
|
run_again(sdata, ifmgd->auth_data->timeout);
|
|
} else {
|
|
ifmgd->auth_data->timeout = jiffies - 1;
|
|
}
|
|
ifmgd->auth_data->timeout_started = true;
|
|
} else if (ifmgd->assoc_data &&
|
|
(ieee80211_is_assoc_req(fc) ||
|
|
ieee80211_is_reassoc_req(fc))) {
|
|
if (status_acked) {
|
|
ifmgd->assoc_data->timeout =
|
|
jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
|
|
run_again(sdata, ifmgd->assoc_data->timeout);
|
|
} else {
|
|
ifmgd->assoc_data->timeout = jiffies - 1;
|
|
}
|
|
ifmgd->assoc_data->timeout_started = true;
|
|
}
|
|
}
|
|
|
|
if (ifmgd->auth_data && ifmgd->auth_data->timeout_started &&
|
|
time_after(jiffies, ifmgd->auth_data->timeout)) {
|
|
if (ifmgd->auth_data->done || ifmgd->auth_data->waiting) {
|
|
/*
|
|
* ok ... we waited for assoc or continuation but
|
|
* userspace didn't do it, so kill the auth data
|
|
*/
|
|
ieee80211_destroy_auth_data(sdata, false);
|
|
} else if (ieee80211_auth(sdata)) {
|
|
u8 ap_addr[ETH_ALEN];
|
|
struct ieee80211_event event = {
|
|
.type = MLME_EVENT,
|
|
.u.mlme.data = AUTH_EVENT,
|
|
.u.mlme.status = MLME_TIMEOUT,
|
|
};
|
|
|
|
memcpy(ap_addr, ifmgd->auth_data->ap_addr, ETH_ALEN);
|
|
|
|
ieee80211_destroy_auth_data(sdata, false);
|
|
|
|
cfg80211_auth_timeout(sdata->dev, ap_addr);
|
|
drv_event_callback(sdata->local, sdata, &event);
|
|
}
|
|
} else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
|
|
run_again(sdata, ifmgd->auth_data->timeout);
|
|
|
|
if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
|
|
time_after(jiffies, ifmgd->assoc_data->timeout)) {
|
|
if ((ifmgd->assoc_data->need_beacon &&
|
|
!sdata->deflink.u.mgd.have_beacon) ||
|
|
ieee80211_do_assoc(sdata)) {
|
|
struct ieee80211_event event = {
|
|
.type = MLME_EVENT,
|
|
.u.mlme.data = ASSOC_EVENT,
|
|
.u.mlme.status = MLME_TIMEOUT,
|
|
};
|
|
|
|
ieee80211_destroy_assoc_data(sdata, ASSOC_TIMEOUT);
|
|
drv_event_callback(sdata->local, sdata, &event);
|
|
}
|
|
} else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
|
|
run_again(sdata, ifmgd->assoc_data->timeout);
|
|
|
|
if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL &&
|
|
ifmgd->associated) {
|
|
u8 *bssid = sdata->deflink.u.mgd.bssid;
|
|
int max_tries;
|
|
|
|
if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
|
|
max_tries = max_nullfunc_tries;
|
|
else
|
|
max_tries = max_probe_tries;
|
|
|
|
/* ACK received for nullfunc probing frame */
|
|
if (!ifmgd->probe_send_count)
|
|
ieee80211_reset_ap_probe(sdata);
|
|
else if (ifmgd->nullfunc_failed) {
|
|
if (ifmgd->probe_send_count < max_tries) {
|
|
mlme_dbg(sdata,
|
|
"No ack for nullfunc frame to AP %pM, try %d/%i\n",
|
|
bssid, ifmgd->probe_send_count,
|
|
max_tries);
|
|
ieee80211_mgd_probe_ap_send(sdata);
|
|
} else {
|
|
mlme_dbg(sdata,
|
|
"No ack for nullfunc frame to AP %pM, disconnecting.\n",
|
|
bssid);
|
|
ieee80211_sta_connection_lost(sdata,
|
|
WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
|
|
false);
|
|
}
|
|
} else if (time_is_after_jiffies(ifmgd->probe_timeout))
|
|
run_again(sdata, ifmgd->probe_timeout);
|
|
else if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
|
|
mlme_dbg(sdata,
|
|
"Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
|
|
bssid, probe_wait_ms);
|
|
ieee80211_sta_connection_lost(sdata,
|
|
WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
|
|
} else if (ifmgd->probe_send_count < max_tries) {
|
|
mlme_dbg(sdata,
|
|
"No probe response from AP %pM after %dms, try %d/%i\n",
|
|
bssid, probe_wait_ms,
|
|
ifmgd->probe_send_count, max_tries);
|
|
ieee80211_mgd_probe_ap_send(sdata);
|
|
} else {
|
|
/*
|
|
* We actually lost the connection ... or did we?
|
|
* Let's make sure!
|
|
*/
|
|
mlme_dbg(sdata,
|
|
"No probe response from AP %pM after %dms, disconnecting.\n",
|
|
bssid, probe_wait_ms);
|
|
|
|
ieee80211_sta_connection_lost(sdata,
|
|
WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void ieee80211_sta_bcn_mon_timer(struct timer_list *t)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata =
|
|
from_timer(sdata, t, u.mgd.bcn_mon_timer);
|
|
|
|
if (WARN_ON(ieee80211_vif_is_mld(&sdata->vif)))
|
|
return;
|
|
|
|
if (sdata->vif.bss_conf.csa_active &&
|
|
!sdata->deflink.u.mgd.csa_waiting_bcn)
|
|
return;
|
|
|
|
if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
|
|
return;
|
|
|
|
sdata->u.mgd.connection_loss = false;
|
|
wiphy_work_queue(sdata->local->hw.wiphy,
|
|
&sdata->u.mgd.beacon_connection_loss_work);
|
|
}
|
|
|
|
static void ieee80211_sta_conn_mon_timer(struct timer_list *t)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata =
|
|
from_timer(sdata, t, u.mgd.conn_mon_timer);
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct sta_info *sta;
|
|
unsigned long timeout;
|
|
|
|
if (WARN_ON(ieee80211_vif_is_mld(&sdata->vif)))
|
|
return;
|
|
|
|
if (sdata->vif.bss_conf.csa_active &&
|
|
!sdata->deflink.u.mgd.csa_waiting_bcn)
|
|
return;
|
|
|
|
sta = sta_info_get(sdata, sdata->vif.cfg.ap_addr);
|
|
if (!sta)
|
|
return;
|
|
|
|
timeout = sta->deflink.status_stats.last_ack;
|
|
if (time_before(sta->deflink.status_stats.last_ack, sta->deflink.rx_stats.last_rx))
|
|
timeout = sta->deflink.rx_stats.last_rx;
|
|
timeout += IEEE80211_CONNECTION_IDLE_TIME;
|
|
|
|
/* If timeout is after now, then update timer to fire at
|
|
* the later date, but do not actually probe at this time.
|
|
*/
|
|
if (time_is_after_jiffies(timeout)) {
|
|
mod_timer(&ifmgd->conn_mon_timer, round_jiffies_up(timeout));
|
|
return;
|
|
}
|
|
|
|
wiphy_work_queue(local->hw.wiphy, &sdata->u.mgd.monitor_work);
|
|
}
|
|
|
|
static void ieee80211_sta_monitor_work(struct wiphy *wiphy,
|
|
struct wiphy_work *work)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata =
|
|
container_of(work, struct ieee80211_sub_if_data,
|
|
u.mgd.monitor_work);
|
|
|
|
ieee80211_mgd_probe_ap(sdata, false);
|
|
}
|
|
|
|
static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
|
|
__ieee80211_stop_poll(sdata);
|
|
|
|
/* let's probe the connection once */
|
|
if (!ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
|
|
wiphy_work_queue(sdata->local->hw.wiphy,
|
|
&sdata->u.mgd.monitor_work);
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
if (ifmgd->auth_data || ifmgd->assoc_data) {
|
|
const u8 *ap_addr = ifmgd->auth_data ?
|
|
ifmgd->auth_data->ap_addr :
|
|
ifmgd->assoc_data->ap_addr;
|
|
|
|
/*
|
|
* If we are trying to authenticate / associate while suspending,
|
|
* cfg80211 won't know and won't actually abort those attempts,
|
|
* thus we need to do that ourselves.
|
|
*/
|
|
ieee80211_send_deauth_disassoc(sdata, ap_addr, ap_addr,
|
|
IEEE80211_STYPE_DEAUTH,
|
|
WLAN_REASON_DEAUTH_LEAVING,
|
|
false, frame_buf);
|
|
if (ifmgd->assoc_data)
|
|
ieee80211_destroy_assoc_data(sdata, ASSOC_ABANDON);
|
|
if (ifmgd->auth_data)
|
|
ieee80211_destroy_auth_data(sdata, false);
|
|
cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
|
|
IEEE80211_DEAUTH_FRAME_LEN,
|
|
false);
|
|
}
|
|
|
|
/* This is a bit of a hack - we should find a better and more generic
|
|
* solution to this. Normally when suspending, cfg80211 will in fact
|
|
* deauthenticate. However, it doesn't (and cannot) stop an ongoing
|
|
* auth (not so important) or assoc (this is the problem) process.
|
|
*
|
|
* As a consequence, it can happen that we are in the process of both
|
|
* associating and suspending, and receive an association response
|
|
* after cfg80211 has checked if it needs to disconnect, but before
|
|
* we actually set the flag to drop incoming frames. This will then
|
|
* cause the workqueue flush to process the association response in
|
|
* the suspend, resulting in a successful association just before it
|
|
* tries to remove the interface from the driver, which now though
|
|
* has a channel context assigned ... this results in issues.
|
|
*
|
|
* To work around this (for now) simply deauth here again if we're
|
|
* now connected.
|
|
*/
|
|
if (ifmgd->associated && !sdata->local->wowlan) {
|
|
u8 bssid[ETH_ALEN];
|
|
struct cfg80211_deauth_request req = {
|
|
.reason_code = WLAN_REASON_DEAUTH_LEAVING,
|
|
.bssid = bssid,
|
|
};
|
|
|
|
memcpy(bssid, sdata->vif.cfg.ap_addr, ETH_ALEN);
|
|
ieee80211_mgd_deauth(sdata, &req);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
if (!ifmgd->associated)
|
|
return;
|
|
|
|
if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
|
|
sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
|
|
mlme_dbg(sdata, "driver requested disconnect after resume\n");
|
|
ieee80211_sta_connection_lost(sdata,
|
|
WLAN_REASON_UNSPECIFIED,
|
|
true);
|
|
return;
|
|
}
|
|
|
|
if (sdata->flags & IEEE80211_SDATA_DISCONNECT_HW_RESTART) {
|
|
sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_HW_RESTART;
|
|
mlme_dbg(sdata, "driver requested disconnect after hardware restart\n");
|
|
ieee80211_sta_connection_lost(sdata,
|
|
WLAN_REASON_UNSPECIFIED,
|
|
true);
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void ieee80211_request_smps_mgd_work(struct wiphy *wiphy,
|
|
struct wiphy_work *work)
|
|
{
|
|
struct ieee80211_link_data *link =
|
|
container_of(work, struct ieee80211_link_data,
|
|
u.mgd.request_smps_work);
|
|
|
|
__ieee80211_request_smps_mgd(link->sdata, link,
|
|
link->u.mgd.driver_smps_mode);
|
|
}
|
|
|
|
/* interface setup */
|
|
void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
|
|
wiphy_work_init(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
|
|
wiphy_work_init(&ifmgd->beacon_connection_loss_work,
|
|
ieee80211_beacon_connection_loss_work);
|
|
wiphy_work_init(&ifmgd->csa_connection_drop_work,
|
|
ieee80211_csa_connection_drop_work);
|
|
wiphy_delayed_work_init(&ifmgd->tdls_peer_del_work,
|
|
ieee80211_tdls_peer_del_work);
|
|
wiphy_delayed_work_init(&ifmgd->ml_reconf_work,
|
|
ieee80211_ml_reconf_work);
|
|
timer_setup(&ifmgd->timer, ieee80211_sta_timer, 0);
|
|
timer_setup(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, 0);
|
|
timer_setup(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, 0);
|
|
wiphy_delayed_work_init(&ifmgd->tx_tspec_wk,
|
|
ieee80211_sta_handle_tspec_ac_params_wk);
|
|
wiphy_delayed_work_init(&ifmgd->ttlm_work,
|
|
ieee80211_tid_to_link_map_work);
|
|
|
|
ifmgd->flags = 0;
|
|
ifmgd->powersave = sdata->wdev.ps;
|
|
ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues;
|
|
ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len;
|
|
/* Setup TDLS data */
|
|
spin_lock_init(&ifmgd->teardown_lock);
|
|
ifmgd->teardown_skb = NULL;
|
|
ifmgd->orig_teardown_skb = NULL;
|
|
}
|
|
|
|
static void ieee80211_recalc_smps_work(struct wiphy *wiphy,
|
|
struct wiphy_work *work)
|
|
{
|
|
struct ieee80211_link_data *link =
|
|
container_of(work, struct ieee80211_link_data,
|
|
u.mgd.recalc_smps);
|
|
|
|
ieee80211_recalc_smps(link->sdata, link);
|
|
}
|
|
|
|
void ieee80211_mgd_setup_link(struct ieee80211_link_data *link)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = link->sdata;
|
|
struct ieee80211_local *local = sdata->local;
|
|
unsigned int link_id = link->link_id;
|
|
|
|
link->u.mgd.p2p_noa_index = -1;
|
|
link->u.mgd.conn_flags = 0;
|
|
link->conf->bssid = link->u.mgd.bssid;
|
|
|
|
wiphy_work_init(&link->u.mgd.request_smps_work,
|
|
ieee80211_request_smps_mgd_work);
|
|
wiphy_work_init(&link->u.mgd.recalc_smps,
|
|
ieee80211_recalc_smps_work);
|
|
if (local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS)
|
|
link->u.mgd.req_smps = IEEE80211_SMPS_AUTOMATIC;
|
|
else
|
|
link->u.mgd.req_smps = IEEE80211_SMPS_OFF;
|
|
|
|
wiphy_delayed_work_init(&link->u.mgd.chswitch_work,
|
|
ieee80211_chswitch_work);
|
|
|
|
if (sdata->u.mgd.assoc_data)
|
|
ether_addr_copy(link->conf->addr,
|
|
sdata->u.mgd.assoc_data->link[link_id].addr);
|
|
else if (!is_valid_ether_addr(link->conf->addr))
|
|
eth_random_addr(link->conf->addr);
|
|
}
|
|
|
|
/* scan finished notification */
|
|
void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata;
|
|
|
|
/* Restart STA timers */
|
|
rcu_read_lock();
|
|
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
|
|
if (ieee80211_sdata_running(sdata))
|
|
ieee80211_restart_sta_timer(sdata);
|
|
}
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
|
|
struct cfg80211_bss *cbss, s8 link_id,
|
|
const u8 *ap_mld_addr, bool assoc,
|
|
bool override)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct ieee80211_bss *bss = (void *)cbss->priv;
|
|
struct sta_info *new_sta = NULL;
|
|
struct ieee80211_link_data *link;
|
|
bool have_sta = false;
|
|
bool mlo;
|
|
int err;
|
|
|
|
if (link_id >= 0) {
|
|
mlo = true;
|
|
if (WARN_ON(!ap_mld_addr))
|
|
return -EINVAL;
|
|
err = ieee80211_vif_set_links(sdata, BIT(link_id), 0);
|
|
} else {
|
|
if (WARN_ON(ap_mld_addr))
|
|
return -EINVAL;
|
|
ap_mld_addr = cbss->bssid;
|
|
err = ieee80211_vif_set_links(sdata, 0, 0);
|
|
link_id = 0;
|
|
mlo = false;
|
|
}
|
|
|
|
if (err)
|
|
return err;
|
|
|
|
link = sdata_dereference(sdata->link[link_id], sdata);
|
|
if (WARN_ON(!link)) {
|
|
err = -ENOLINK;
|
|
goto out_err;
|
|
}
|
|
|
|
if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data)) {
|
|
err = -EINVAL;
|
|
goto out_err;
|
|
}
|
|
|
|
/* If a reconfig is happening, bail out */
|
|
if (local->in_reconfig) {
|
|
err = -EBUSY;
|
|
goto out_err;
|
|
}
|
|
|
|
if (assoc) {
|
|
rcu_read_lock();
|
|
have_sta = sta_info_get(sdata, ap_mld_addr);
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
if (!have_sta) {
|
|
if (mlo)
|
|
new_sta = sta_info_alloc_with_link(sdata, ap_mld_addr,
|
|
link_id, cbss->bssid,
|
|
GFP_KERNEL);
|
|
else
|
|
new_sta = sta_info_alloc(sdata, ap_mld_addr, GFP_KERNEL);
|
|
|
|
if (!new_sta) {
|
|
err = -ENOMEM;
|
|
goto out_err;
|
|
}
|
|
|
|
new_sta->sta.mlo = mlo;
|
|
}
|
|
|
|
/*
|
|
* Set up the information for the new channel before setting the
|
|
* new channel. We can't - completely race-free - change the basic
|
|
* rates bitmap and the channel (sband) that it refers to, but if
|
|
* we set it up before we at least avoid calling into the driver's
|
|
* bss_info_changed() method with invalid information (since we do
|
|
* call that from changing the channel - only for IDLE and perhaps
|
|
* some others, but ...).
|
|
*
|
|
* So to avoid that, just set up all the new information before the
|
|
* channel, but tell the driver to apply it only afterwards, since
|
|
* it might need the new channel for that.
|
|
*/
|
|
if (new_sta) {
|
|
const struct cfg80211_bss_ies *ies;
|
|
struct link_sta_info *link_sta;
|
|
|
|
rcu_read_lock();
|
|
link_sta = rcu_dereference(new_sta->link[link_id]);
|
|
if (WARN_ON(!link_sta)) {
|
|
rcu_read_unlock();
|
|
sta_info_free(local, new_sta);
|
|
err = -EINVAL;
|
|
goto out_err;
|
|
}
|
|
|
|
err = ieee80211_mgd_setup_link_sta(link, new_sta,
|
|
link_sta, cbss);
|
|
if (err) {
|
|
rcu_read_unlock();
|
|
sta_info_free(local, new_sta);
|
|
goto out_err;
|
|
}
|
|
|
|
memcpy(link->u.mgd.bssid, cbss->bssid, ETH_ALEN);
|
|
|
|
/* set timing information */
|
|
link->conf->beacon_int = cbss->beacon_interval;
|
|
ies = rcu_dereference(cbss->beacon_ies);
|
|
if (ies) {
|
|
link->conf->sync_tsf = ies->tsf;
|
|
link->conf->sync_device_ts =
|
|
bss->device_ts_beacon;
|
|
|
|
ieee80211_get_dtim(ies,
|
|
&link->conf->sync_dtim_count,
|
|
NULL);
|
|
} else if (!ieee80211_hw_check(&sdata->local->hw,
|
|
TIMING_BEACON_ONLY)) {
|
|
ies = rcu_dereference(cbss->proberesp_ies);
|
|
/* must be non-NULL since beacon IEs were NULL */
|
|
link->conf->sync_tsf = ies->tsf;
|
|
link->conf->sync_device_ts =
|
|
bss->device_ts_presp;
|
|
link->conf->sync_dtim_count = 0;
|
|
} else {
|
|
link->conf->sync_tsf = 0;
|
|
link->conf->sync_device_ts = 0;
|
|
link->conf->sync_dtim_count = 0;
|
|
}
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
if (new_sta || override) {
|
|
err = ieee80211_prep_channel(sdata, link, cbss, mlo,
|
|
&link->u.mgd.conn_flags);
|
|
if (err) {
|
|
if (new_sta)
|
|
sta_info_free(local, new_sta);
|
|
goto out_err;
|
|
}
|
|
}
|
|
|
|
if (new_sta) {
|
|
/*
|
|
* tell driver about BSSID, basic rates and timing
|
|
* this was set up above, before setting the channel
|
|
*/
|
|
ieee80211_link_info_change_notify(sdata, link,
|
|
BSS_CHANGED_BSSID |
|
|
BSS_CHANGED_BASIC_RATES |
|
|
BSS_CHANGED_BEACON_INT);
|
|
|
|
if (assoc)
|
|
sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
|
|
|
|
err = sta_info_insert(new_sta);
|
|
new_sta = NULL;
|
|
if (err) {
|
|
sdata_info(sdata,
|
|
"failed to insert STA entry for the AP (error %d)\n",
|
|
err);
|
|
goto out_err;
|
|
}
|
|
} else
|
|
WARN_ON_ONCE(!ether_addr_equal(link->u.mgd.bssid, cbss->bssid));
|
|
|
|
/* Cancel scan to ensure that nothing interferes with connection */
|
|
if (local->scanning)
|
|
ieee80211_scan_cancel(local);
|
|
|
|
return 0;
|
|
|
|
out_err:
|
|
ieee80211_link_release_channel(&sdata->deflink);
|
|
ieee80211_vif_set_links(sdata, 0, 0);
|
|
return err;
|
|
}
|
|
|
|
/* config hooks */
|
|
int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
|
|
struct cfg80211_auth_request *req)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct ieee80211_mgd_auth_data *auth_data;
|
|
struct ieee80211_link_data *link;
|
|
const struct element *csa_elem, *ecsa_elem;
|
|
u16 auth_alg;
|
|
int err;
|
|
bool cont_auth;
|
|
|
|
lockdep_assert_wiphy(sdata->local->hw.wiphy);
|
|
|
|
/* prepare auth data structure */
|
|
|
|
switch (req->auth_type) {
|
|
case NL80211_AUTHTYPE_OPEN_SYSTEM:
|
|
auth_alg = WLAN_AUTH_OPEN;
|
|
break;
|
|
case NL80211_AUTHTYPE_SHARED_KEY:
|
|
if (fips_enabled)
|
|
return -EOPNOTSUPP;
|
|
auth_alg = WLAN_AUTH_SHARED_KEY;
|
|
break;
|
|
case NL80211_AUTHTYPE_FT:
|
|
auth_alg = WLAN_AUTH_FT;
|
|
break;
|
|
case NL80211_AUTHTYPE_NETWORK_EAP:
|
|
auth_alg = WLAN_AUTH_LEAP;
|
|
break;
|
|
case NL80211_AUTHTYPE_SAE:
|
|
auth_alg = WLAN_AUTH_SAE;
|
|
break;
|
|
case NL80211_AUTHTYPE_FILS_SK:
|
|
auth_alg = WLAN_AUTH_FILS_SK;
|
|
break;
|
|
case NL80211_AUTHTYPE_FILS_SK_PFS:
|
|
auth_alg = WLAN_AUTH_FILS_SK_PFS;
|
|
break;
|
|
case NL80211_AUTHTYPE_FILS_PK:
|
|
auth_alg = WLAN_AUTH_FILS_PK;
|
|
break;
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
if (ifmgd->assoc_data)
|
|
return -EBUSY;
|
|
|
|
rcu_read_lock();
|
|
csa_elem = ieee80211_bss_get_elem(req->bss, WLAN_EID_CHANNEL_SWITCH);
|
|
ecsa_elem = ieee80211_bss_get_elem(req->bss,
|
|
WLAN_EID_EXT_CHANSWITCH_ANN);
|
|
if ((csa_elem &&
|
|
csa_elem->datalen == sizeof(struct ieee80211_channel_sw_ie) &&
|
|
((struct ieee80211_channel_sw_ie *)csa_elem->data)->count != 0) ||
|
|
(ecsa_elem &&
|
|
ecsa_elem->datalen == sizeof(struct ieee80211_ext_chansw_ie) &&
|
|
((struct ieee80211_ext_chansw_ie *)ecsa_elem->data)->count != 0)) {
|
|
rcu_read_unlock();
|
|
sdata_info(sdata, "AP is in CSA process, reject auth\n");
|
|
return -EINVAL;
|
|
}
|
|
rcu_read_unlock();
|
|
|
|
auth_data = kzalloc(sizeof(*auth_data) + req->auth_data_len +
|
|
req->ie_len, GFP_KERNEL);
|
|
if (!auth_data)
|
|
return -ENOMEM;
|
|
|
|
memcpy(auth_data->ap_addr,
|
|
req->ap_mld_addr ?: req->bss->bssid,
|
|
ETH_ALEN);
|
|
auth_data->bss = req->bss;
|
|
auth_data->link_id = req->link_id;
|
|
|
|
if (req->auth_data_len >= 4) {
|
|
if (req->auth_type == NL80211_AUTHTYPE_SAE) {
|
|
__le16 *pos = (__le16 *) req->auth_data;
|
|
|
|
auth_data->sae_trans = le16_to_cpu(pos[0]);
|
|
auth_data->sae_status = le16_to_cpu(pos[1]);
|
|
}
|
|
memcpy(auth_data->data, req->auth_data + 4,
|
|
req->auth_data_len - 4);
|
|
auth_data->data_len += req->auth_data_len - 4;
|
|
}
|
|
|
|
/* Check if continuing authentication or trying to authenticate with the
|
|
* same BSS that we were in the process of authenticating with and avoid
|
|
* removal and re-addition of the STA entry in
|
|
* ieee80211_prep_connection().
|
|
*/
|
|
cont_auth = ifmgd->auth_data && req->bss == ifmgd->auth_data->bss &&
|
|
ifmgd->auth_data->link_id == req->link_id;
|
|
|
|
if (req->ie && req->ie_len) {
|
|
memcpy(&auth_data->data[auth_data->data_len],
|
|
req->ie, req->ie_len);
|
|
auth_data->data_len += req->ie_len;
|
|
}
|
|
|
|
if (req->key && req->key_len) {
|
|
auth_data->key_len = req->key_len;
|
|
auth_data->key_idx = req->key_idx;
|
|
memcpy(auth_data->key, req->key, req->key_len);
|
|
}
|
|
|
|
auth_data->algorithm = auth_alg;
|
|
|
|
/* try to authenticate/probe */
|
|
|
|
if (ifmgd->auth_data) {
|
|
if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE) {
|
|
auth_data->peer_confirmed =
|
|
ifmgd->auth_data->peer_confirmed;
|
|
}
|
|
ieee80211_destroy_auth_data(sdata, cont_auth);
|
|
}
|
|
|
|
/* prep auth_data so we don't go into idle on disassoc */
|
|
ifmgd->auth_data = auth_data;
|
|
|
|
/* If this is continuation of an ongoing SAE authentication exchange
|
|
* (i.e., request to send SAE Confirm) and the peer has already
|
|
* confirmed, mark authentication completed since we are about to send
|
|
* out SAE Confirm.
|
|
*/
|
|
if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE &&
|
|
auth_data->peer_confirmed && auth_data->sae_trans == 2)
|
|
ieee80211_mark_sta_auth(sdata);
|
|
|
|
if (ifmgd->associated) {
|
|
u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
|
|
|
|
sdata_info(sdata,
|
|
"disconnect from AP %pM for new auth to %pM\n",
|
|
sdata->vif.cfg.ap_addr, auth_data->ap_addr);
|
|
ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
|
|
WLAN_REASON_UNSPECIFIED,
|
|
false, frame_buf);
|
|
|
|
ieee80211_report_disconnect(sdata, frame_buf,
|
|
sizeof(frame_buf), true,
|
|
WLAN_REASON_UNSPECIFIED,
|
|
false);
|
|
}
|
|
|
|
/* needed for transmitting the auth frame(s) properly */
|
|
memcpy(sdata->vif.cfg.ap_addr, auth_data->ap_addr, ETH_ALEN);
|
|
|
|
err = ieee80211_prep_connection(sdata, req->bss, req->link_id,
|
|
req->ap_mld_addr, cont_auth, false);
|
|
if (err)
|
|
goto err_clear;
|
|
|
|
if (req->link_id > 0)
|
|
link = sdata_dereference(sdata->link[req->link_id], sdata);
|
|
else
|
|
link = sdata_dereference(sdata->link[0], sdata);
|
|
|
|
if (WARN_ON(!link)) {
|
|
err = -ENOLINK;
|
|
goto err_clear;
|
|
}
|
|
|
|
sdata_info(sdata, "authenticate with %pM (local address=%pM)\n",
|
|
auth_data->ap_addr, link->conf->addr);
|
|
|
|
err = ieee80211_auth(sdata);
|
|
if (err) {
|
|
sta_info_destroy_addr(sdata, auth_data->ap_addr);
|
|
goto err_clear;
|
|
}
|
|
|
|
/* hold our own reference */
|
|
cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
|
|
return 0;
|
|
|
|
err_clear:
|
|
if (!ieee80211_vif_is_mld(&sdata->vif)) {
|
|
eth_zero_addr(sdata->deflink.u.mgd.bssid);
|
|
ieee80211_link_info_change_notify(sdata, &sdata->deflink,
|
|
BSS_CHANGED_BSSID);
|
|
ieee80211_link_release_channel(&sdata->deflink);
|
|
}
|
|
ifmgd->auth_data = NULL;
|
|
kfree(auth_data);
|
|
return err;
|
|
}
|
|
|
|
static ieee80211_conn_flags_t
|
|
ieee80211_setup_assoc_link(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_mgd_assoc_data *assoc_data,
|
|
struct cfg80211_assoc_request *req,
|
|
ieee80211_conn_flags_t conn_flags,
|
|
unsigned int link_id)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
const struct cfg80211_bss_ies *bss_ies;
|
|
struct ieee80211_supported_band *sband;
|
|
const struct element *ht_elem, *vht_elem;
|
|
struct ieee80211_link_data *link;
|
|
struct cfg80211_bss *cbss;
|
|
struct ieee80211_bss *bss;
|
|
bool is_5ghz, is_6ghz;
|
|
|
|
cbss = assoc_data->link[link_id].bss;
|
|
if (WARN_ON(!cbss))
|
|
return 0;
|
|
|
|
bss = (void *)cbss->priv;
|
|
|
|
sband = local->hw.wiphy->bands[cbss->channel->band];
|
|
if (WARN_ON(!sband))
|
|
return 0;
|
|
|
|
link = sdata_dereference(sdata->link[link_id], sdata);
|
|
if (WARN_ON(!link))
|
|
return 0;
|
|
|
|
is_5ghz = cbss->channel->band == NL80211_BAND_5GHZ;
|
|
is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ;
|
|
|
|
/* for MLO connections assume advertising all rates is OK */
|
|
if (!req->ap_mld_addr) {
|
|
assoc_data->supp_rates = bss->supp_rates;
|
|
assoc_data->supp_rates_len = bss->supp_rates_len;
|
|
}
|
|
|
|
/* copy and link elems for the STA profile */
|
|
if (req->links[link_id].elems_len) {
|
|
memcpy(assoc_data->ie_pos, req->links[link_id].elems,
|
|
req->links[link_id].elems_len);
|
|
assoc_data->link[link_id].elems = assoc_data->ie_pos;
|
|
assoc_data->link[link_id].elems_len = req->links[link_id].elems_len;
|
|
assoc_data->ie_pos += req->links[link_id].elems_len;
|
|
}
|
|
|
|
rcu_read_lock();
|
|
ht_elem = ieee80211_bss_get_elem(cbss, WLAN_EID_HT_OPERATION);
|
|
if (ht_elem && ht_elem->datalen >= sizeof(struct ieee80211_ht_operation))
|
|
assoc_data->link[link_id].ap_ht_param =
|
|
((struct ieee80211_ht_operation *)(ht_elem->data))->ht_param;
|
|
else if (!is_6ghz)
|
|
conn_flags |= IEEE80211_CONN_DISABLE_HT;
|
|
vht_elem = ieee80211_bss_get_elem(cbss, WLAN_EID_VHT_CAPABILITY);
|
|
if (vht_elem && vht_elem->datalen >= sizeof(struct ieee80211_vht_cap)) {
|
|
memcpy(&assoc_data->link[link_id].ap_vht_cap, vht_elem->data,
|
|
sizeof(struct ieee80211_vht_cap));
|
|
} else if (is_5ghz) {
|
|
link_info(link,
|
|
"VHT capa missing/short, disabling VHT/HE/EHT\n");
|
|
conn_flags |= IEEE80211_CONN_DISABLE_VHT |
|
|
IEEE80211_CONN_DISABLE_HE |
|
|
IEEE80211_CONN_DISABLE_EHT;
|
|
}
|
|
rcu_read_unlock();
|
|
|
|
link->u.mgd.beacon_crc_valid = false;
|
|
link->u.mgd.dtim_period = 0;
|
|
link->u.mgd.have_beacon = false;
|
|
|
|
/* override HT/VHT configuration only if the AP and we support it */
|
|
if (!(conn_flags & IEEE80211_CONN_DISABLE_HT)) {
|
|
struct ieee80211_sta_ht_cap sta_ht_cap;
|
|
|
|
memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
|
|
ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
|
|
}
|
|
|
|
link->conf->eht_puncturing = 0;
|
|
|
|
rcu_read_lock();
|
|
bss_ies = rcu_dereference(cbss->beacon_ies);
|
|
if (bss_ies) {
|
|
u8 dtim_count = 0;
|
|
|
|
ieee80211_get_dtim(bss_ies, &dtim_count,
|
|
&link->u.mgd.dtim_period);
|
|
|
|
sdata->deflink.u.mgd.have_beacon = true;
|
|
|
|
if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
|
|
link->conf->sync_tsf = bss_ies->tsf;
|
|
link->conf->sync_device_ts = bss->device_ts_beacon;
|
|
link->conf->sync_dtim_count = dtim_count;
|
|
}
|
|
} else {
|
|
bss_ies = rcu_dereference(cbss->ies);
|
|
}
|
|
|
|
if (bss_ies) {
|
|
const struct ieee80211_eht_operation *eht_oper;
|
|
const struct element *elem;
|
|
|
|
elem = cfg80211_find_ext_elem(WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION,
|
|
bss_ies->data, bss_ies->len);
|
|
if (elem && elem->datalen >= 3)
|
|
link->conf->profile_periodicity = elem->data[2];
|
|
else
|
|
link->conf->profile_periodicity = 0;
|
|
|
|
elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY,
|
|
bss_ies->data, bss_ies->len);
|
|
if (elem && elem->datalen >= 11 &&
|
|
(elem->data[10] & WLAN_EXT_CAPA11_EMA_SUPPORT))
|
|
link->conf->ema_ap = true;
|
|
else
|
|
link->conf->ema_ap = false;
|
|
|
|
elem = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_OPERATION,
|
|
bss_ies->data, bss_ies->len);
|
|
eht_oper = (const void *)(elem->data + 1);
|
|
|
|
if (elem &&
|
|
ieee80211_eht_oper_size_ok((const void *)(elem->data + 1),
|
|
elem->datalen - 1) &&
|
|
(eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT) &&
|
|
(eht_oper->params & IEEE80211_EHT_OPER_DISABLED_SUBCHANNEL_BITMAP_PRESENT)) {
|
|
const struct ieee80211_eht_operation_info *info =
|
|
(void *)eht_oper->optional;
|
|
const u8 *disable_subchannel_bitmap = info->optional;
|
|
u16 bitmap;
|
|
|
|
bitmap = get_unaligned_le16(disable_subchannel_bitmap);
|
|
if (cfg80211_valid_disable_subchannel_bitmap(&bitmap,
|
|
&link->conf->chandef))
|
|
ieee80211_handle_puncturing_bitmap(link,
|
|
eht_oper,
|
|
bitmap,
|
|
NULL);
|
|
else
|
|
conn_flags |= IEEE80211_CONN_DISABLE_EHT;
|
|
}
|
|
}
|
|
rcu_read_unlock();
|
|
|
|
if (bss->corrupt_data) {
|
|
char *corrupt_type = "data";
|
|
|
|
if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) {
|
|
if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP)
|
|
corrupt_type = "beacon and probe response";
|
|
else
|
|
corrupt_type = "beacon";
|
|
} else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP) {
|
|
corrupt_type = "probe response";
|
|
}
|
|
sdata_info(sdata, "associating to AP %pM with corrupt %s\n",
|
|
cbss->bssid, corrupt_type);
|
|
}
|
|
|
|
if (link->u.mgd.req_smps == IEEE80211_SMPS_AUTOMATIC) {
|
|
if (sdata->u.mgd.powersave)
|
|
link->smps_mode = IEEE80211_SMPS_DYNAMIC;
|
|
else
|
|
link->smps_mode = IEEE80211_SMPS_OFF;
|
|
} else {
|
|
link->smps_mode = link->u.mgd.req_smps;
|
|
}
|
|
|
|
return conn_flags;
|
|
}
|
|
|
|
int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
|
|
struct cfg80211_assoc_request *req)
|
|
{
|
|
unsigned int assoc_link_id = req->link_id < 0 ? 0 : req->link_id;
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct ieee80211_mgd_assoc_data *assoc_data;
|
|
const struct element *ssid_elem, *csa_elem, *ecsa_elem;
|
|
struct ieee80211_vif_cfg *vif_cfg = &sdata->vif.cfg;
|
|
ieee80211_conn_flags_t conn_flags = 0;
|
|
struct ieee80211_link_data *link;
|
|
struct cfg80211_bss *cbss;
|
|
struct ieee80211_bss *bss;
|
|
bool override;
|
|
int i, err;
|
|
size_t size = sizeof(*assoc_data) + req->ie_len;
|
|
|
|
for (i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++)
|
|
size += req->links[i].elems_len;
|
|
|
|
/* FIXME: no support for 4-addr MLO yet */
|
|
if (sdata->u.mgd.use_4addr && req->link_id >= 0)
|
|
return -EOPNOTSUPP;
|
|
|
|
assoc_data = kzalloc(size, GFP_KERNEL);
|
|
if (!assoc_data)
|
|
return -ENOMEM;
|
|
|
|
cbss = req->link_id < 0 ? req->bss : req->links[req->link_id].bss;
|
|
|
|
rcu_read_lock();
|
|
ssid_elem = ieee80211_bss_get_elem(cbss, WLAN_EID_SSID);
|
|
if (!ssid_elem || ssid_elem->datalen > sizeof(assoc_data->ssid)) {
|
|
rcu_read_unlock();
|
|
kfree(assoc_data);
|
|
return -EINVAL;
|
|
}
|
|
|
|
csa_elem = ieee80211_bss_get_elem(cbss, WLAN_EID_CHANNEL_SWITCH);
|
|
ecsa_elem = ieee80211_bss_get_elem(cbss, WLAN_EID_EXT_CHANSWITCH_ANN);
|
|
if ((csa_elem &&
|
|
csa_elem->datalen == sizeof(struct ieee80211_channel_sw_ie) &&
|
|
((struct ieee80211_channel_sw_ie *)csa_elem->data)->count != 0) ||
|
|
(ecsa_elem &&
|
|
ecsa_elem->datalen == sizeof(struct ieee80211_ext_chansw_ie) &&
|
|
((struct ieee80211_ext_chansw_ie *)ecsa_elem->data)->count != 0)) {
|
|
sdata_info(sdata, "AP is in CSA process, reject assoc\n");
|
|
rcu_read_unlock();
|
|
kfree(assoc_data);
|
|
return -EINVAL;
|
|
}
|
|
|
|
memcpy(assoc_data->ssid, ssid_elem->data, ssid_elem->datalen);
|
|
assoc_data->ssid_len = ssid_elem->datalen;
|
|
memcpy(vif_cfg->ssid, assoc_data->ssid, assoc_data->ssid_len);
|
|
vif_cfg->ssid_len = assoc_data->ssid_len;
|
|
rcu_read_unlock();
|
|
|
|
if (req->ap_mld_addr) {
|
|
for (i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) {
|
|
if (!req->links[i].bss)
|
|
continue;
|
|
link = sdata_dereference(sdata->link[i], sdata);
|
|
if (link)
|
|
ether_addr_copy(assoc_data->link[i].addr,
|
|
link->conf->addr);
|
|
else
|
|
eth_random_addr(assoc_data->link[i].addr);
|
|
}
|
|
} else {
|
|
memcpy(assoc_data->link[0].addr, sdata->vif.addr, ETH_ALEN);
|
|
}
|
|
|
|
assoc_data->s1g = cbss->channel->band == NL80211_BAND_S1GHZ;
|
|
|
|
memcpy(assoc_data->ap_addr,
|
|
req->ap_mld_addr ?: req->bss->bssid,
|
|
ETH_ALEN);
|
|
|
|
if (ifmgd->associated) {
|
|
u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
|
|
|
|
sdata_info(sdata,
|
|
"disconnect from AP %pM for new assoc to %pM\n",
|
|
sdata->vif.cfg.ap_addr, assoc_data->ap_addr);
|
|
ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
|
|
WLAN_REASON_UNSPECIFIED,
|
|
false, frame_buf);
|
|
|
|
ieee80211_report_disconnect(sdata, frame_buf,
|
|
sizeof(frame_buf), true,
|
|
WLAN_REASON_UNSPECIFIED,
|
|
false);
|
|
}
|
|
|
|
if (ifmgd->auth_data && !ifmgd->auth_data->done) {
|
|
err = -EBUSY;
|
|
goto err_free;
|
|
}
|
|
|
|
if (ifmgd->assoc_data) {
|
|
err = -EBUSY;
|
|
goto err_free;
|
|
}
|
|
|
|
if (ifmgd->auth_data) {
|
|
bool match;
|
|
|
|
/* keep sta info, bssid if matching */
|
|
match = ether_addr_equal(ifmgd->auth_data->ap_addr,
|
|
assoc_data->ap_addr) &&
|
|
ifmgd->auth_data->link_id == req->link_id;
|
|
|
|
/* Cleanup is delayed if auth_data matches */
|
|
if (!match)
|
|
ieee80211_destroy_auth_data(sdata, false);
|
|
}
|
|
|
|
/* prepare assoc data */
|
|
|
|
bss = (void *)cbss->priv;
|
|
assoc_data->wmm = bss->wmm_used &&
|
|
(local->hw.queues >= IEEE80211_NUM_ACS);
|
|
|
|
/*
|
|
* IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
|
|
* We still associate in non-HT mode (11a/b/g) if any one of these
|
|
* ciphers is configured as pairwise.
|
|
* We can set this to true for non-11n hardware, that'll be checked
|
|
* separately along with the peer capabilities.
|
|
*/
|
|
for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) {
|
|
if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
|
|
req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
|
|
req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
|
|
conn_flags |= IEEE80211_CONN_DISABLE_HT;
|
|
conn_flags |= IEEE80211_CONN_DISABLE_VHT;
|
|
conn_flags |= IEEE80211_CONN_DISABLE_HE;
|
|
conn_flags |= IEEE80211_CONN_DISABLE_EHT;
|
|
netdev_info(sdata->dev,
|
|
"disabling HT/VHT/HE due to WEP/TKIP use\n");
|
|
}
|
|
}
|
|
|
|
/* also disable HT/VHT/HE/EHT if the AP doesn't use WMM */
|
|
if (!bss->wmm_used) {
|
|
conn_flags |= IEEE80211_CONN_DISABLE_HT;
|
|
conn_flags |= IEEE80211_CONN_DISABLE_VHT;
|
|
conn_flags |= IEEE80211_CONN_DISABLE_HE;
|
|
conn_flags |= IEEE80211_CONN_DISABLE_EHT;
|
|
netdev_info(sdata->dev,
|
|
"disabling HT/VHT/HE as WMM/QoS is not supported by the AP\n");
|
|
}
|
|
|
|
if (req->flags & ASSOC_REQ_DISABLE_HT) {
|
|
mlme_dbg(sdata, "HT disabled by flag, disabling HT/VHT/HE\n");
|
|
conn_flags |= IEEE80211_CONN_DISABLE_HT;
|
|
conn_flags |= IEEE80211_CONN_DISABLE_VHT;
|
|
conn_flags |= IEEE80211_CONN_DISABLE_HE;
|
|
conn_flags |= IEEE80211_CONN_DISABLE_EHT;
|
|
}
|
|
|
|
if (req->flags & ASSOC_REQ_DISABLE_VHT) {
|
|
mlme_dbg(sdata, "VHT disabled by flag, disabling VHT\n");
|
|
conn_flags |= IEEE80211_CONN_DISABLE_VHT;
|
|
}
|
|
|
|
if (req->flags & ASSOC_REQ_DISABLE_HE) {
|
|
mlme_dbg(sdata, "HE disabled by flag, disabling HE/EHT\n");
|
|
conn_flags |= IEEE80211_CONN_DISABLE_HE;
|
|
conn_flags |= IEEE80211_CONN_DISABLE_EHT;
|
|
}
|
|
|
|
if (req->flags & ASSOC_REQ_DISABLE_EHT)
|
|
conn_flags |= IEEE80211_CONN_DISABLE_EHT;
|
|
|
|
memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
|
|
memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
|
|
sizeof(ifmgd->ht_capa_mask));
|
|
|
|
memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa));
|
|
memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
|
|
sizeof(ifmgd->vht_capa_mask));
|
|
|
|
memcpy(&ifmgd->s1g_capa, &req->s1g_capa, sizeof(ifmgd->s1g_capa));
|
|
memcpy(&ifmgd->s1g_capa_mask, &req->s1g_capa_mask,
|
|
sizeof(ifmgd->s1g_capa_mask));
|
|
|
|
if (req->ie && req->ie_len) {
|
|
memcpy(assoc_data->ie, req->ie, req->ie_len);
|
|
assoc_data->ie_len = req->ie_len;
|
|
assoc_data->ie_pos = assoc_data->ie + assoc_data->ie_len;
|
|
} else {
|
|
assoc_data->ie_pos = assoc_data->ie;
|
|
}
|
|
|
|
if (req->fils_kek) {
|
|
/* should already be checked in cfg80211 - so warn */
|
|
if (WARN_ON(req->fils_kek_len > FILS_MAX_KEK_LEN)) {
|
|
err = -EINVAL;
|
|
goto err_free;
|
|
}
|
|
memcpy(assoc_data->fils_kek, req->fils_kek,
|
|
req->fils_kek_len);
|
|
assoc_data->fils_kek_len = req->fils_kek_len;
|
|
}
|
|
|
|
if (req->fils_nonces)
|
|
memcpy(assoc_data->fils_nonces, req->fils_nonces,
|
|
2 * FILS_NONCE_LEN);
|
|
|
|
/* default timeout */
|
|
assoc_data->timeout = jiffies;
|
|
assoc_data->timeout_started = true;
|
|
|
|
assoc_data->assoc_link_id = assoc_link_id;
|
|
|
|
if (req->ap_mld_addr) {
|
|
for (i = 0; i < ARRAY_SIZE(assoc_data->link); i++) {
|
|
assoc_data->link[i].conn_flags = conn_flags;
|
|
assoc_data->link[i].bss = req->links[i].bss;
|
|
assoc_data->link[i].disabled = req->links[i].disabled;
|
|
}
|
|
|
|
/* if there was no authentication, set up the link */
|
|
err = ieee80211_vif_set_links(sdata, BIT(assoc_link_id), 0);
|
|
if (err)
|
|
goto err_clear;
|
|
} else {
|
|
assoc_data->link[0].conn_flags = conn_flags;
|
|
assoc_data->link[0].bss = cbss;
|
|
}
|
|
|
|
link = sdata_dereference(sdata->link[assoc_link_id], sdata);
|
|
if (WARN_ON(!link)) {
|
|
err = -EINVAL;
|
|
goto err_clear;
|
|
}
|
|
|
|
/* keep old conn_flags from ieee80211_prep_channel() from auth */
|
|
conn_flags |= link->u.mgd.conn_flags;
|
|
conn_flags |= ieee80211_setup_assoc_link(sdata, assoc_data, req,
|
|
conn_flags, assoc_link_id);
|
|
override = link->u.mgd.conn_flags != conn_flags;
|
|
link->u.mgd.conn_flags |= conn_flags;
|
|
|
|
if (WARN((sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD) &&
|
|
ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK),
|
|
"U-APSD not supported with HW_PS_NULLFUNC_STACK\n"))
|
|
sdata->vif.driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
|
|
|
|
if (bss->wmm_used && bss->uapsd_supported &&
|
|
(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD)) {
|
|
assoc_data->uapsd = true;
|
|
ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
|
|
} else {
|
|
assoc_data->uapsd = false;
|
|
ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
|
|
}
|
|
|
|
if (req->prev_bssid)
|
|
memcpy(assoc_data->prev_ap_addr, req->prev_bssid, ETH_ALEN);
|
|
|
|
if (req->use_mfp) {
|
|
ifmgd->mfp = IEEE80211_MFP_REQUIRED;
|
|
ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
|
|
} else {
|
|
ifmgd->mfp = IEEE80211_MFP_DISABLED;
|
|
ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
|
|
}
|
|
|
|
if (req->flags & ASSOC_REQ_USE_RRM)
|
|
ifmgd->flags |= IEEE80211_STA_ENABLE_RRM;
|
|
else
|
|
ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM;
|
|
|
|
if (req->crypto.control_port)
|
|
ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
|
|
else
|
|
ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
|
|
|
|
sdata->control_port_protocol = req->crypto.control_port_ethertype;
|
|
sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
|
|
sdata->control_port_over_nl80211 =
|
|
req->crypto.control_port_over_nl80211;
|
|
sdata->control_port_no_preauth = req->crypto.control_port_no_preauth;
|
|
|
|
/* kick off associate process */
|
|
ifmgd->assoc_data = assoc_data;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(assoc_data->link); i++) {
|
|
if (!assoc_data->link[i].bss)
|
|
continue;
|
|
if (i == assoc_data->assoc_link_id)
|
|
continue;
|
|
/* only calculate the flags, hence link == NULL */
|
|
err = ieee80211_prep_channel(sdata, NULL,
|
|
assoc_data->link[i].bss, true,
|
|
&assoc_data->link[i].conn_flags);
|
|
if (err) {
|
|
req->links[i].error = err;
|
|
goto err_clear;
|
|
}
|
|
}
|
|
|
|
/* needed for transmitting the assoc frames properly */
|
|
memcpy(sdata->vif.cfg.ap_addr, assoc_data->ap_addr, ETH_ALEN);
|
|
|
|
err = ieee80211_prep_connection(sdata, cbss, req->link_id,
|
|
req->ap_mld_addr, true, override);
|
|
if (err)
|
|
goto err_clear;
|
|
|
|
assoc_data->link[assoc_data->assoc_link_id].conn_flags =
|
|
link->u.mgd.conn_flags;
|
|
|
|
if (ieee80211_hw_check(&sdata->local->hw, NEED_DTIM_BEFORE_ASSOC)) {
|
|
const struct cfg80211_bss_ies *beacon_ies;
|
|
|
|
rcu_read_lock();
|
|
beacon_ies = rcu_dereference(req->bss->beacon_ies);
|
|
|
|
if (beacon_ies) {
|
|
/*
|
|
* Wait up to one beacon interval ...
|
|
* should this be more if we miss one?
|
|
*/
|
|
sdata_info(sdata, "waiting for beacon from %pM\n",
|
|
link->u.mgd.bssid);
|
|
assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
|
|
assoc_data->timeout_started = true;
|
|
assoc_data->need_beacon = true;
|
|
}
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
run_again(sdata, assoc_data->timeout);
|
|
|
|
/* We are associating, clean up auth_data */
|
|
if (ifmgd->auth_data)
|
|
ieee80211_destroy_auth_data(sdata, true);
|
|
|
|
return 0;
|
|
err_clear:
|
|
if (!ifmgd->auth_data) {
|
|
eth_zero_addr(sdata->deflink.u.mgd.bssid);
|
|
ieee80211_link_info_change_notify(sdata, &sdata->deflink,
|
|
BSS_CHANGED_BSSID);
|
|
}
|
|
ifmgd->assoc_data = NULL;
|
|
err_free:
|
|
kfree(assoc_data);
|
|
return err;
|
|
}
|
|
|
|
int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
|
|
struct cfg80211_deauth_request *req)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
|
|
bool tx = !req->local_state_change;
|
|
struct ieee80211_prep_tx_info info = {
|
|
.subtype = IEEE80211_STYPE_DEAUTH,
|
|
};
|
|
|
|
if (ifmgd->auth_data &&
|
|
ether_addr_equal(ifmgd->auth_data->ap_addr, req->bssid)) {
|
|
sdata_info(sdata,
|
|
"aborting authentication with %pM by local choice (Reason: %u=%s)\n",
|
|
req->bssid, req->reason_code,
|
|
ieee80211_get_reason_code_string(req->reason_code));
|
|
|
|
info.link_id = ifmgd->auth_data->link_id;
|
|
drv_mgd_prepare_tx(sdata->local, sdata, &info);
|
|
ieee80211_send_deauth_disassoc(sdata, req->bssid, req->bssid,
|
|
IEEE80211_STYPE_DEAUTH,
|
|
req->reason_code, tx,
|
|
frame_buf);
|
|
ieee80211_destroy_auth_data(sdata, false);
|
|
ieee80211_report_disconnect(sdata, frame_buf,
|
|
sizeof(frame_buf), true,
|
|
req->reason_code, false);
|
|
drv_mgd_complete_tx(sdata->local, sdata, &info);
|
|
return 0;
|
|
}
|
|
|
|
if (ifmgd->assoc_data &&
|
|
ether_addr_equal(ifmgd->assoc_data->ap_addr, req->bssid)) {
|
|
sdata_info(sdata,
|
|
"aborting association with %pM by local choice (Reason: %u=%s)\n",
|
|
req->bssid, req->reason_code,
|
|
ieee80211_get_reason_code_string(req->reason_code));
|
|
|
|
info.link_id = ifmgd->assoc_data->assoc_link_id;
|
|
drv_mgd_prepare_tx(sdata->local, sdata, &info);
|
|
ieee80211_send_deauth_disassoc(sdata, req->bssid, req->bssid,
|
|
IEEE80211_STYPE_DEAUTH,
|
|
req->reason_code, tx,
|
|
frame_buf);
|
|
ieee80211_destroy_assoc_data(sdata, ASSOC_ABANDON);
|
|
ieee80211_report_disconnect(sdata, frame_buf,
|
|
sizeof(frame_buf), true,
|
|
req->reason_code, false);
|
|
return 0;
|
|
}
|
|
|
|
if (ifmgd->associated &&
|
|
ether_addr_equal(sdata->vif.cfg.ap_addr, req->bssid)) {
|
|
sdata_info(sdata,
|
|
"deauthenticating from %pM by local choice (Reason: %u=%s)\n",
|
|
req->bssid, req->reason_code,
|
|
ieee80211_get_reason_code_string(req->reason_code));
|
|
|
|
ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
|
|
req->reason_code, tx, frame_buf);
|
|
ieee80211_report_disconnect(sdata, frame_buf,
|
|
sizeof(frame_buf), true,
|
|
req->reason_code, false);
|
|
drv_mgd_complete_tx(sdata->local, sdata, &info);
|
|
return 0;
|
|
}
|
|
|
|
return -ENOTCONN;
|
|
}
|
|
|
|
int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
|
|
struct cfg80211_disassoc_request *req)
|
|
{
|
|
u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
|
|
|
|
if (!sdata->u.mgd.associated ||
|
|
memcmp(sdata->vif.cfg.ap_addr, req->ap_addr, ETH_ALEN))
|
|
return -ENOTCONN;
|
|
|
|
sdata_info(sdata,
|
|
"disassociating from %pM by local choice (Reason: %u=%s)\n",
|
|
req->ap_addr, req->reason_code,
|
|
ieee80211_get_reason_code_string(req->reason_code));
|
|
|
|
ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
|
|
req->reason_code, !req->local_state_change,
|
|
frame_buf);
|
|
|
|
ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
|
|
req->reason_code, false);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void ieee80211_mgd_stop_link(struct ieee80211_link_data *link)
|
|
{
|
|
wiphy_work_cancel(link->sdata->local->hw.wiphy,
|
|
&link->u.mgd.request_smps_work);
|
|
wiphy_work_cancel(link->sdata->local->hw.wiphy,
|
|
&link->u.mgd.recalc_smps);
|
|
wiphy_delayed_work_cancel(link->sdata->local->hw.wiphy,
|
|
&link->u.mgd.chswitch_work);
|
|
}
|
|
|
|
void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
|
|
/*
|
|
* Make sure some work items will not run after this,
|
|
* they will not do anything but might not have been
|
|
* cancelled when disconnecting.
|
|
*/
|
|
wiphy_work_cancel(sdata->local->hw.wiphy,
|
|
&ifmgd->monitor_work);
|
|
wiphy_work_cancel(sdata->local->hw.wiphy,
|
|
&ifmgd->beacon_connection_loss_work);
|
|
wiphy_work_cancel(sdata->local->hw.wiphy,
|
|
&ifmgd->csa_connection_drop_work);
|
|
wiphy_delayed_work_cancel(sdata->local->hw.wiphy,
|
|
&ifmgd->tdls_peer_del_work);
|
|
wiphy_delayed_work_cancel(sdata->local->hw.wiphy,
|
|
&ifmgd->ml_reconf_work);
|
|
wiphy_delayed_work_cancel(sdata->local->hw.wiphy, &ifmgd->ttlm_work);
|
|
|
|
if (ifmgd->assoc_data)
|
|
ieee80211_destroy_assoc_data(sdata, ASSOC_TIMEOUT);
|
|
if (ifmgd->auth_data)
|
|
ieee80211_destroy_auth_data(sdata, false);
|
|
spin_lock_bh(&ifmgd->teardown_lock);
|
|
if (ifmgd->teardown_skb) {
|
|
kfree_skb(ifmgd->teardown_skb);
|
|
ifmgd->teardown_skb = NULL;
|
|
ifmgd->orig_teardown_skb = NULL;
|
|
}
|
|
kfree(ifmgd->assoc_req_ies);
|
|
ifmgd->assoc_req_ies = NULL;
|
|
ifmgd->assoc_req_ies_len = 0;
|
|
spin_unlock_bh(&ifmgd->teardown_lock);
|
|
del_timer_sync(&ifmgd->timer);
|
|
}
|
|
|
|
void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
|
|
enum nl80211_cqm_rssi_threshold_event rssi_event,
|
|
s32 rssi_level,
|
|
gfp_t gfp)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
|
|
|
|
trace_api_cqm_rssi_notify(sdata, rssi_event, rssi_level);
|
|
|
|
cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, rssi_level, gfp);
|
|
}
|
|
EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
|
|
|
|
void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif *vif, gfp_t gfp)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
|
|
|
|
trace_api_cqm_beacon_loss_notify(sdata->local, sdata);
|
|
|
|
cfg80211_cqm_beacon_loss_notify(sdata->dev, gfp);
|
|
}
|
|
EXPORT_SYMBOL(ieee80211_cqm_beacon_loss_notify);
|
|
|
|
static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata,
|
|
int rssi_min_thold,
|
|
int rssi_max_thold)
|
|
{
|
|
trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold);
|
|
|
|
if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
|
|
return;
|
|
|
|
/*
|
|
* Scale up threshold values before storing it, as the RSSI averaging
|
|
* algorithm uses a scaled up value as well. Change this scaling
|
|
* factor if the RSSI averaging algorithm changes.
|
|
*/
|
|
sdata->u.mgd.rssi_min_thold = rssi_min_thold*16;
|
|
sdata->u.mgd.rssi_max_thold = rssi_max_thold*16;
|
|
}
|
|
|
|
void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif,
|
|
int rssi_min_thold,
|
|
int rssi_max_thold)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
|
|
|
|
WARN_ON(rssi_min_thold == rssi_max_thold ||
|
|
rssi_min_thold > rssi_max_thold);
|
|
|
|
_ieee80211_enable_rssi_reports(sdata, rssi_min_thold,
|
|
rssi_max_thold);
|
|
}
|
|
EXPORT_SYMBOL(ieee80211_enable_rssi_reports);
|
|
|
|
void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
|
|
|
|
_ieee80211_enable_rssi_reports(sdata, 0, 0);
|
|
}
|
|
EXPORT_SYMBOL(ieee80211_disable_rssi_reports);
|