forked from Minki/linux
b6db0f899a
Allow user to disable HE mode, similar to how VHT and HT can be disabled. Useful for testing. Signed-off-by: Ben Greear <greearb@candelatech.com> Link: https://lore.kernel.org/r/20210204144610.25971-1-greearb@candelatech.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
5993 lines
173 KiB
C
5993 lines
173 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 - 2020 Intel Corporation
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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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#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_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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* 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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/*
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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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sdata_assert_lock(sdata);
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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 u32
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ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
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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_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 ieee80211_if_managed *ifmgd = &sdata->u.mgd;
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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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u32 ht_cfreq, ret;
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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, chandef))
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ret = IEEE80211_STA_DISABLE_HT |
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IEEE80211_STA_DISABLE_VHT |
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IEEE80211_STA_DISABLE_HE;
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else
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ret = 0;
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vht_chandef = *chandef;
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goto out;
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} else if (sband->band == NL80211_BAND_S1GHZ) {
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if (!ieee80211_chandef_s1g_oper(s1g_oper, chandef)) {
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sdata_info(sdata,
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"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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ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_40MHZ |
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IEEE80211_STA_DISABLE_VHT |
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IEEE80211_STA_DISABLE_80P80MHZ |
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IEEE80211_STA_DISABLE_160MHZ;
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goto out;
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}
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memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
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ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
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if (!ht_oper || !sta_ht_cap.ht_supported) {
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ret = IEEE80211_STA_DISABLE_HT |
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IEEE80211_STA_DISABLE_VHT |
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IEEE80211_STA_DISABLE_HE;
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goto out;
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}
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chandef->width = NL80211_CHAN_WIDTH_20;
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ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
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channel->band);
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/* check that channel matches the right operating channel */
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if (!tracking && channel->center_freq != ht_cfreq) {
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/*
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* It's possible that some APs are confused here;
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* Netgear WNDR3700 sometimes reports 4 higher than
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* the actual channel in association responses, but
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* since we look at probe response/beacon data here
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* it should be OK.
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*/
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sdata_info(sdata,
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"Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
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channel->center_freq, ht_cfreq,
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ht_oper->primary_chan, channel->band);
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ret = IEEE80211_STA_DISABLE_HT |
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IEEE80211_STA_DISABLE_VHT |
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IEEE80211_STA_DISABLE_HE;
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goto out;
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}
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/* check 40 MHz support, if we have it */
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if (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
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ieee80211_chandef_ht_oper(ht_oper, chandef);
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} else {
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/* 40 MHz (and 80 MHz) must be supported for VHT */
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ret = IEEE80211_STA_DISABLE_VHT;
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/* also mark 40 MHz disabled */
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ret |= IEEE80211_STA_DISABLE_40MHZ;
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goto out;
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}
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if (!vht_oper || !sband->vht_cap.vht_supported) {
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ret = IEEE80211_STA_DISABLE_VHT;
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goto out;
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}
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vht_chandef = *chandef;
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if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE) && he_oper &&
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(le32_to_cpu(he_oper->he_oper_params) &
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IEEE80211_HE_OPERATION_VHT_OPER_INFO)) {
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struct ieee80211_vht_operation he_oper_vht_cap;
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/*
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* Set only first 3 bytes (other 2 aren't used in
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* ieee80211_chandef_vht_oper() anyway)
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*/
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memcpy(&he_oper_vht_cap, he_oper->optional, 3);
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he_oper_vht_cap.basic_mcs_set = cpu_to_le16(0);
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if (!ieee80211_chandef_vht_oper(&sdata->local->hw, vht_cap_info,
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&he_oper_vht_cap, ht_oper,
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&vht_chandef)) {
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if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
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sdata_info(sdata,
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"HE AP VHT information is invalid, disable HE\n");
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ret = IEEE80211_STA_DISABLE_HE;
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goto out;
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}
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} else if (!ieee80211_chandef_vht_oper(&sdata->local->hw,
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vht_cap_info,
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vht_oper, ht_oper,
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&vht_chandef)) {
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if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
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sdata_info(sdata,
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"AP VHT information is invalid, disable VHT\n");
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ret = IEEE80211_STA_DISABLE_VHT;
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goto out;
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}
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if (!cfg80211_chandef_valid(&vht_chandef)) {
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if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
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sdata_info(sdata,
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"AP VHT information is invalid, disable VHT\n");
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ret = IEEE80211_STA_DISABLE_VHT;
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goto out;
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}
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if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
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ret = 0;
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goto out;
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}
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if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
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if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
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sdata_info(sdata,
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"AP VHT information doesn't match HT, disable VHT\n");
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ret = IEEE80211_STA_DISABLE_VHT;
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goto out;
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}
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*chandef = vht_chandef;
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ret = 0;
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out:
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/*
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* When tracking the current AP, don't do any further checks if the
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* new chandef is identical to the one we're currently using for the
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* connection. This keeps us from playing ping-pong with regulatory,
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* without it the following can happen (for example):
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* - connect to an AP with 80 MHz, world regdom allows 80 MHz
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* - AP advertises regdom US
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* - CRDA loads regdom US with 80 MHz prohibited (old database)
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* - the code below detects an unsupported channel, downgrades, and
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* we disconnect from the AP in the caller
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* - disconnect causes CRDA to reload world regdomain and the game
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* starts anew.
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* (see https://bugzilla.kernel.org/show_bug.cgi?id=70881)
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*
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* It seems possible that there are still scenarios with CSA or real
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* bandwidth changes where a this could happen, but those cases are
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* less common and wouldn't completely prevent using the AP.
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*/
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if (tracking &&
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cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef))
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return ret;
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/* don't print the message below for VHT mismatch if VHT is disabled */
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if (ret & IEEE80211_STA_DISABLE_VHT)
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vht_chandef = *chandef;
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/*
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* Ignore the DISABLED flag when we're already connected and only
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* tracking the APs beacon for bandwidth changes - otherwise we
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* might get disconnected here if we connect to an AP, update our
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* regulatory information based on the AP's country IE and the
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* information we have is wrong/outdated and disables the channel
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* that we're actually using for the connection to the AP.
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*/
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while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
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tracking ? 0 :
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IEEE80211_CHAN_DISABLED)) {
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if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
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ret = IEEE80211_STA_DISABLE_HT |
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IEEE80211_STA_DISABLE_VHT |
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IEEE80211_STA_DISABLE_HE;
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break;
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}
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ret |= ieee80211_chandef_downgrade(chandef);
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}
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if (!he_oper || !cfg80211_chandef_usable(sdata->wdev.wiphy, chandef,
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IEEE80211_CHAN_NO_HE))
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ret |= IEEE80211_STA_DISABLE_HE;
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if (chandef->width != vht_chandef.width && !tracking)
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sdata_info(sdata,
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"capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
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WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
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return ret;
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}
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static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
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struct sta_info *sta,
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const struct ieee80211_ht_cap *ht_cap,
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const struct ieee80211_vht_cap *vht_cap,
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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_s1g_oper_ie *s1g_oper,
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const u8 *bssid, u32 *changed)
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{
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struct ieee80211_local *local = sdata->local;
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struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
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struct ieee80211_channel *chan = sdata->vif.bss_conf.chandef.chan;
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struct ieee80211_supported_band *sband =
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local->hw.wiphy->bands[chan->band];
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struct cfg80211_chan_def chandef;
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u16 ht_opmode;
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u32 flags;
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enum ieee80211_sta_rx_bandwidth new_sta_bw;
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u32 vht_cap_info = 0;
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int ret;
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/* if HT was/is disabled, don't track any bandwidth changes */
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if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper)
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return 0;
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/* don't check VHT if we associated as non-VHT station */
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if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
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vht_oper = NULL;
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|
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/* don't check HE if we associated as non-HE station */
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if (ifmgd->flags & IEEE80211_STA_DISABLE_HE ||
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!ieee80211_get_he_sta_cap(sband))
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he_oper = NULL;
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|
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if (WARN_ON_ONCE(!sta))
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return -EINVAL;
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|
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/*
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* if bss configuration changed store the new one -
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* this may be applicable even if channel is identical
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*/
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ht_opmode = le16_to_cpu(ht_oper->operation_mode);
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if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
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*changed |= BSS_CHANGED_HT;
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sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
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}
|
|
|
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if (vht_cap)
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vht_cap_info = le32_to_cpu(vht_cap->vht_cap_info);
|
|
|
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/* calculate new channel (type) based on HT/VHT/HE operation IEs */
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flags = ieee80211_determine_chantype(sdata, sband, chan, vht_cap_info,
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ht_oper, vht_oper, he_oper,
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s1g_oper, &chandef, true);
|
|
|
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/*
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|
* 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
|
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* any good -- we couldn't use it with the AP.
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*/
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if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ &&
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chandef.width == NL80211_CHAN_WIDTH_80P80)
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flags |= ieee80211_chandef_downgrade(&chandef);
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if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ &&
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chandef.width == NL80211_CHAN_WIDTH_160)
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flags |= ieee80211_chandef_downgrade(&chandef);
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if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
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chandef.width > NL80211_CHAN_WIDTH_20)
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flags |= ieee80211_chandef_downgrade(&chandef);
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|
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if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef))
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return 0;
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|
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sdata_info(sdata,
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"AP %pM changed bandwidth, new config is %d.%03d MHz, "
|
|
"width %d (%d.%03d/%d MHz)\n",
|
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ifmgd->bssid, chandef.chan->center_freq,
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chandef.chan->freq_offset, chandef.width,
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chandef.center_freq1, chandef.freq1_offset,
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chandef.center_freq2);
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|
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if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
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IEEE80211_STA_DISABLE_VHT |
|
|
IEEE80211_STA_DISABLE_HE |
|
|
IEEE80211_STA_DISABLE_40MHZ |
|
|
IEEE80211_STA_DISABLE_80P80MHZ |
|
|
IEEE80211_STA_DISABLE_160MHZ)) ||
|
|
!cfg80211_chandef_valid(&chandef)) {
|
|
sdata_info(sdata,
|
|
"AP %pM changed bandwidth in a way we can't support - disconnect\n",
|
|
ifmgd->bssid);
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (chandef.width) {
|
|
case NL80211_CHAN_WIDTH_20_NOHT:
|
|
case NL80211_CHAN_WIDTH_20:
|
|
new_sta_bw = IEEE80211_STA_RX_BW_20;
|
|
break;
|
|
case NL80211_CHAN_WIDTH_40:
|
|
new_sta_bw = IEEE80211_STA_RX_BW_40;
|
|
break;
|
|
case NL80211_CHAN_WIDTH_80:
|
|
new_sta_bw = IEEE80211_STA_RX_BW_80;
|
|
break;
|
|
case NL80211_CHAN_WIDTH_80P80:
|
|
case NL80211_CHAN_WIDTH_160:
|
|
new_sta_bw = IEEE80211_STA_RX_BW_160;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (new_sta_bw > sta->cur_max_bandwidth)
|
|
new_sta_bw = sta->cur_max_bandwidth;
|
|
|
|
if (new_sta_bw < sta->sta.bandwidth) {
|
|
sta->sta.bandwidth = new_sta_bw;
|
|
rate_control_rate_update(local, sband, sta,
|
|
IEEE80211_RC_BW_CHANGED);
|
|
}
|
|
|
|
ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed);
|
|
if (ret) {
|
|
sdata_info(sdata,
|
|
"AP %pM changed bandwidth to incompatible one - disconnect\n",
|
|
ifmgd->bssid);
|
|
return ret;
|
|
}
|
|
|
|
if (new_sta_bw > sta->sta.bandwidth) {
|
|
sta->sta.bandwidth = new_sta_bw;
|
|
rate_control_rate_update(local, sband, sta,
|
|
IEEE80211_RC_BW_CHANGED);
|
|
}
|
|
|
|
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)
|
|
{
|
|
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 (sdata->u.mgd.flags & IEEE80211_STA_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 may set the owner of the MU-MIMO capability
|
|
*/
|
|
static void 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)
|
|
{
|
|
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;
|
|
|
|
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 (sdata->u.mgd.flags & IEEE80211_STA_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 (sdata->u.mgd.flags & IEEE80211_STA_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 capablity 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.mu_mimo_owner) {
|
|
disable_mu_mimo = true;
|
|
break;
|
|
}
|
|
}
|
|
if (disable_mu_mimo)
|
|
cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
|
|
else
|
|
sdata->vif.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);
|
|
}
|
|
|
|
/* 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)
|
|
{
|
|
u8 *pos;
|
|
const struct ieee80211_sta_he_cap *he_cap = NULL;
|
|
struct ieee80211_chanctx_conf *chanctx_conf;
|
|
u8 he_cap_size;
|
|
bool reg_cap = false;
|
|
|
|
rcu_read_lock();
|
|
chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
|
|
if (!WARN_ON_ONCE(!chanctx_conf))
|
|
reg_cap = cfg80211_chandef_usable(sdata->wdev.wiphy,
|
|
&chanctx_conf->def,
|
|
IEEE80211_CHAN_NO_HE);
|
|
|
|
rcu_read_unlock();
|
|
|
|
he_cap = ieee80211_get_he_sta_cap(sband);
|
|
if (!he_cap || !reg_cap)
|
|
return;
|
|
|
|
/*
|
|
* TODO: the 1 added is because this temporarily is under the EXTENSION
|
|
* IE. Get rid of it when it moves.
|
|
*/
|
|
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);
|
|
ieee80211_ie_build_he_cap(pos, he_cap, pos + he_cap_size);
|
|
|
|
ieee80211_ie_build_he_6ghz_cap(sdata, skb);
|
|
}
|
|
|
|
static void 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 sk_buff *skb;
|
|
struct ieee80211_mgmt *mgmt;
|
|
u8 *pos, qos_info, *ie_start;
|
|
size_t offset = 0, noffset;
|
|
int i, count, rates_len, supp_rates_len, shift;
|
|
u16 capab;
|
|
struct ieee80211_supported_band *sband;
|
|
struct ieee80211_chanctx_conf *chanctx_conf;
|
|
struct ieee80211_channel *chan;
|
|
u32 rates = 0;
|
|
__le16 listen_int;
|
|
struct element *ext_capa = NULL;
|
|
|
|
/* 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);
|
|
|
|
sdata_assert_lock(sdata);
|
|
|
|
rcu_read_lock();
|
|
chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
|
|
if (WARN_ON(!chanctx_conf)) {
|
|
rcu_read_unlock();
|
|
return;
|
|
}
|
|
chan = chanctx_conf->def.chan;
|
|
rcu_read_unlock();
|
|
sband = local->hw.wiphy->bands[chan->band];
|
|
shift = ieee80211_vif_get_shift(&sdata->vif);
|
|
|
|
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(&chanctx_conf->def, 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 = 0;
|
|
for (i = 0; i < sband->n_bitrates; i++) {
|
|
rates |= BIT(i);
|
|
rates_len++;
|
|
}
|
|
}
|
|
|
|
skb = alloc_skb(local->hw.extra_tx_headroom +
|
|
sizeof(*mgmt) + /* bit too much but doesn't matter */
|
|
2 + assoc_data->ssid_len + /* SSID */
|
|
4 + rates_len + /* (extended) rates */
|
|
4 + /* power capability */
|
|
2 + 2 * sband->n_channels + /* supported channels */
|
|
2 + sizeof(struct ieee80211_ht_cap) + /* HT */
|
|
2 + sizeof(struct ieee80211_vht_cap) + /* VHT */
|
|
2 + 1 + sizeof(struct ieee80211_he_cap_elem) + /* HE */
|
|
sizeof(struct ieee80211_he_mcs_nss_supp) +
|
|
IEEE80211_HE_PPE_THRES_MAX_LEN +
|
|
2 + 1 + sizeof(struct ieee80211_he_6ghz_capa) +
|
|
assoc_data->ie_len + /* extra IEs */
|
|
(assoc_data->fils_kek_len ? 16 /* AES-SIV */ : 0) +
|
|
9, /* WMM */
|
|
GFP_KERNEL);
|
|
if (!skb)
|
|
return;
|
|
|
|
skb_reserve(skb, local->hw.extra_tx_headroom);
|
|
|
|
capab = WLAN_CAPABILITY_ESS;
|
|
|
|
if (sband->band == NL80211_BAND_2GHZ) {
|
|
capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
|
|
capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
|
|
}
|
|
|
|
if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY)
|
|
capab |= WLAN_CAPABILITY_PRIVACY;
|
|
|
|
if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
|
|
ieee80211_hw_check(&local->hw, SPECTRUM_MGMT))
|
|
capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
|
|
|
|
if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM)
|
|
capab |= WLAN_CAPABILITY_RADIO_MEASURE;
|
|
|
|
mgmt = skb_put_zero(skb, 24);
|
|
memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN);
|
|
memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
|
|
memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN);
|
|
|
|
listen_int = cpu_to_le16(sband->band == NL80211_BAND_S1GHZ ?
|
|
ieee80211_encode_usf(local->hw.conf.listen_interval) :
|
|
local->hw.conf.listen_interval);
|
|
if (!is_zero_ether_addr(assoc_data->prev_bssid)) {
|
|
skb_put(skb, 10);
|
|
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
|
|
IEEE80211_STYPE_REASSOC_REQ);
|
|
mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
|
|
mgmt->u.reassoc_req.listen_interval = listen_int;
|
|
memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid,
|
|
ETH_ALEN);
|
|
} else {
|
|
skb_put(skb, 4);
|
|
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
|
|
IEEE80211_STYPE_ASSOC_REQ);
|
|
mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
|
|
mgmt->u.assoc_req.listen_interval = listen_int;
|
|
}
|
|
|
|
/* 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);
|
|
|
|
if (sband->band == NL80211_BAND_S1GHZ)
|
|
goto skip_rates;
|
|
|
|
/* add all rates which were marked to be used above */
|
|
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 * (1 << shift));
|
|
*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 * (1 << shift));
|
|
*pos++ = (u8) rate;
|
|
}
|
|
}
|
|
}
|
|
|
|
skip_rates:
|
|
if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT ||
|
|
capab & WLAN_CAPABILITY_RADIO_MEASURE) {
|
|
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(&chanctx_conf->def);
|
|
}
|
|
|
|
/*
|
|
* 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++) {
|
|
*pos++ = ieee80211_frequency_to_channel(
|
|
sband->channels[i].center_freq);
|
|
*pos++ = 1; /* one channel in the subband*/
|
|
}
|
|
}
|
|
|
|
/* Set MBSSID support for HE AP if needed */
|
|
if (ieee80211_hw_check(&local->hw, SUPPORTS_ONLY_HE_MULTI_BSSID) &&
|
|
!(ifmgd->flags & IEEE80211_STA_DISABLE_HE) && assoc_data->ie_len &&
|
|
ext_capa && ext_capa->datalen >= 3)
|
|
ext_capa->data[2] |= WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT;
|
|
|
|
/* if present, add any custom IEs that go before HT */
|
|
if (assoc_data->ie_len) {
|
|
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,
|
|
};
|
|
|
|
noffset = ieee80211_ie_split_ric(assoc_data->ie,
|
|
assoc_data->ie_len,
|
|
before_ht,
|
|
ARRAY_SIZE(before_ht),
|
|
after_ric,
|
|
ARRAY_SIZE(after_ric),
|
|
offset);
|
|
skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
|
|
offset = noffset;
|
|
}
|
|
|
|
if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
|
|
!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)))
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
|
|
|
|
if (sband->band != NL80211_BAND_6GHZ &&
|
|
!(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
|
|
ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
|
|
sband, chan, sdata->smps_mode);
|
|
|
|
/* if present, add any custom IEs that go before VHT */
|
|
if (assoc_data->ie_len) {
|
|
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 */
|
|
};
|
|
|
|
/* RIC already taken above, so no need to handle here anymore */
|
|
noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
|
|
before_vht, ARRAY_SIZE(before_vht),
|
|
offset);
|
|
skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
|
|
offset = noffset;
|
|
}
|
|
|
|
/* if present, add any custom IEs that go before HE */
|
|
if (assoc_data->ie_len) {
|
|
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 */
|
|
};
|
|
|
|
/* RIC already taken above, so no need to handle here anymore */
|
|
noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
|
|
before_he, ARRAY_SIZE(before_he),
|
|
offset);
|
|
pos = skb_put(skb, noffset - offset);
|
|
memcpy(pos, assoc_data->ie + offset, noffset - offset);
|
|
offset = noffset;
|
|
}
|
|
|
|
if (sband->band != NL80211_BAND_6GHZ &&
|
|
!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
|
|
ieee80211_add_vht_ie(sdata, skb, sband,
|
|
&assoc_data->ap_vht_cap);
|
|
|
|
/*
|
|
* If AP doesn't support HT, mark HE as disabled.
|
|
* If on the 5GHz band, make sure it supports VHT.
|
|
*/
|
|
if (ifmgd->flags & IEEE80211_STA_DISABLE_HT ||
|
|
(sband->band == NL80211_BAND_5GHZ &&
|
|
ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
|
|
|
|
if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
|
|
ieee80211_add_he_ie(sdata, skb, sband);
|
|
|
|
/* if present, add any custom non-vendor IEs that go after HE */
|
|
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);
|
|
}
|
|
|
|
if (sband->band == NL80211_BAND_S1GHZ) {
|
|
ieee80211_add_aid_request_ie(sdata, skb);
|
|
ieee80211_add_s1g_capab_ie(sdata, &sband->s1g_cap, skb);
|
|
}
|
|
|
|
/* 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 &&
|
|
fils_encrypt_assoc_req(skb, assoc_data) < 0) {
|
|
dev_kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
pos = skb_tail_pointer(skb);
|
|
kfree(ifmgd->assoc_req_ies);
|
|
ifmgd->assoc_req_ies = kmemdup(ie_start, pos - ie_start, GFP_ATOMIC);
|
|
ifmgd->assoc_req_ies_len = pos - ie_start;
|
|
|
|
drv_mgd_prepare_tx(local, sdata, 0);
|
|
|
|
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);
|
|
}
|
|
|
|
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;
|
|
|
|
/* Don't send NDPs when STA is connected HE */
|
|
if (sdata->vif.type == NL80211_IFTYPE_STATION &&
|
|
!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
|
|
return;
|
|
|
|
skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif,
|
|
!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);
|
|
}
|
|
|
|
static 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;
|
|
|
|
/* Don't send NDPs when connected HE */
|
|
if (!(sdata->u.mgd.flags & IEEE80211_STA_DISABLE_HE))
|
|
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->u.mgd.bssid, ETH_ALEN);
|
|
memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
|
|
memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
|
|
memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
|
|
|
|
IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
|
|
ieee80211_tx_skb(sdata, skb);
|
|
}
|
|
|
|
/* spectrum management related things */
|
|
static void ieee80211_chswitch_work(struct work_struct *work)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata =
|
|
container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
int ret;
|
|
|
|
if (!ieee80211_sdata_running(sdata))
|
|
return;
|
|
|
|
sdata_lock(sdata);
|
|
mutex_lock(&local->mtx);
|
|
mutex_lock(&local->chanctx_mtx);
|
|
|
|
if (!ifmgd->associated)
|
|
goto out;
|
|
|
|
if (!sdata->vif.csa_active)
|
|
goto out;
|
|
|
|
/*
|
|
* 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 (sdata->reserved_chanctx) {
|
|
struct ieee80211_supported_band *sband = NULL;
|
|
struct sta_info *mgd_sta = NULL;
|
|
enum ieee80211_sta_rx_bandwidth bw = IEEE80211_STA_RX_BW_20;
|
|
|
|
/*
|
|
* with multi-vif csa driver may call ieee80211_csa_finish()
|
|
* many times while waiting for other interfaces to use their
|
|
* reservations
|
|
*/
|
|
if (sdata->reserved_ready)
|
|
goto out;
|
|
|
|
if (sdata->vif.bss_conf.chandef.width !=
|
|
sdata->csa_chandef.width) {
|
|
/*
|
|
* For managed interface, we need to also update the AP
|
|
* station bandwidth and align the rate scale algorithm
|
|
* on the bandwidth change. Here we only consider the
|
|
* bandwidth of the new channel definition (as channel
|
|
* switch flow does not have the full HT/VHT/HE
|
|
* information), assuming that if additional changes are
|
|
* required they would be done as part of the processing
|
|
* of the next beacon from the AP.
|
|
*/
|
|
switch (sdata->csa_chandef.width) {
|
|
case NL80211_CHAN_WIDTH_20_NOHT:
|
|
case NL80211_CHAN_WIDTH_20:
|
|
default:
|
|
bw = IEEE80211_STA_RX_BW_20;
|
|
break;
|
|
case NL80211_CHAN_WIDTH_40:
|
|
bw = IEEE80211_STA_RX_BW_40;
|
|
break;
|
|
case NL80211_CHAN_WIDTH_80:
|
|
bw = IEEE80211_STA_RX_BW_80;
|
|
break;
|
|
case NL80211_CHAN_WIDTH_80P80:
|
|
case NL80211_CHAN_WIDTH_160:
|
|
bw = IEEE80211_STA_RX_BW_160;
|
|
break;
|
|
}
|
|
|
|
mgd_sta = sta_info_get(sdata, ifmgd->bssid);
|
|
sband =
|
|
local->hw.wiphy->bands[sdata->csa_chandef.chan->band];
|
|
}
|
|
|
|
if (sdata->vif.bss_conf.chandef.width >
|
|
sdata->csa_chandef.width) {
|
|
mgd_sta->sta.bandwidth = bw;
|
|
rate_control_rate_update(local, sband, mgd_sta,
|
|
IEEE80211_RC_BW_CHANGED);
|
|
}
|
|
|
|
ret = ieee80211_vif_use_reserved_context(sdata);
|
|
if (ret) {
|
|
sdata_info(sdata,
|
|
"failed to use reserved channel context, disconnecting (err=%d)\n",
|
|
ret);
|
|
ieee80211_queue_work(&sdata->local->hw,
|
|
&ifmgd->csa_connection_drop_work);
|
|
goto out;
|
|
}
|
|
|
|
if (sdata->vif.bss_conf.chandef.width <
|
|
sdata->csa_chandef.width) {
|
|
mgd_sta->sta.bandwidth = bw;
|
|
rate_control_rate_update(local, sband, mgd_sta,
|
|
IEEE80211_RC_BW_CHANGED);
|
|
}
|
|
|
|
goto out;
|
|
}
|
|
|
|
if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
|
|
&sdata->csa_chandef)) {
|
|
sdata_info(sdata,
|
|
"failed to finalize channel switch, disconnecting\n");
|
|
ieee80211_queue_work(&sdata->local->hw,
|
|
&ifmgd->csa_connection_drop_work);
|
|
goto out;
|
|
}
|
|
|
|
ifmgd->csa_waiting_bcn = true;
|
|
|
|
ieee80211_sta_reset_beacon_monitor(sdata);
|
|
ieee80211_sta_reset_conn_monitor(sdata);
|
|
|
|
out:
|
|
mutex_unlock(&local->chanctx_mtx);
|
|
mutex_unlock(&local->mtx);
|
|
sdata_unlock(sdata);
|
|
}
|
|
|
|
static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
int ret;
|
|
|
|
sdata_assert_lock(sdata);
|
|
|
|
WARN_ON(!sdata->vif.csa_active);
|
|
|
|
if (sdata->csa_block_tx) {
|
|
ieee80211_wake_vif_queues(local, sdata,
|
|
IEEE80211_QUEUE_STOP_REASON_CSA);
|
|
sdata->csa_block_tx = false;
|
|
}
|
|
|
|
sdata->vif.csa_active = false;
|
|
ifmgd->csa_waiting_bcn = false;
|
|
|
|
ret = drv_post_channel_switch(sdata);
|
|
if (ret) {
|
|
sdata_info(sdata,
|
|
"driver post channel switch failed, disconnecting\n");
|
|
ieee80211_queue_work(&local->hw,
|
|
&ifmgd->csa_connection_drop_work);
|
|
return;
|
|
}
|
|
|
|
cfg80211_ch_switch_notify(sdata->dev, &sdata->reserved_chandef);
|
|
}
|
|
|
|
void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
|
|
trace_api_chswitch_done(sdata, success);
|
|
if (!success) {
|
|
sdata_info(sdata,
|
|
"driver channel switch failed, disconnecting\n");
|
|
ieee80211_queue_work(&sdata->local->hw,
|
|
&ifmgd->csa_connection_drop_work);
|
|
} else {
|
|
ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(ieee80211_chswitch_done);
|
|
|
|
static void ieee80211_chswitch_timer(struct timer_list *t)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata =
|
|
from_timer(sdata, t, u.mgd.chswitch_timer);
|
|
|
|
ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work);
|
|
}
|
|
|
|
static void
|
|
ieee80211_sta_abort_chanswitch(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
|
|
if (!local->ops->abort_channel_switch)
|
|
return;
|
|
|
|
mutex_lock(&local->mtx);
|
|
|
|
mutex_lock(&local->chanctx_mtx);
|
|
ieee80211_vif_unreserve_chanctx(sdata);
|
|
mutex_unlock(&local->chanctx_mtx);
|
|
|
|
if (sdata->csa_block_tx)
|
|
ieee80211_wake_vif_queues(local, sdata,
|
|
IEEE80211_QUEUE_STOP_REASON_CSA);
|
|
|
|
sdata->csa_block_tx = false;
|
|
sdata->vif.csa_active = false;
|
|
|
|
mutex_unlock(&local->mtx);
|
|
|
|
drv_abort_channel_switch(sdata);
|
|
}
|
|
|
|
static void
|
|
ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
|
|
u64 timestamp, u32 device_timestamp,
|
|
struct ieee802_11_elems *elems,
|
|
bool beacon)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct cfg80211_bss *cbss = ifmgd->associated;
|
|
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;
|
|
int res;
|
|
|
|
sdata_assert_lock(sdata);
|
|
|
|
if (!cbss)
|
|
return;
|
|
|
|
if (local->scanning)
|
|
return;
|
|
|
|
current_band = cbss->channel->band;
|
|
bss = (void *)cbss->priv;
|
|
res = ieee80211_parse_ch_switch_ie(sdata, elems, current_band,
|
|
bss->vht_cap_info,
|
|
ifmgd->flags,
|
|
ifmgd->associated->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) {
|
|
ieee80211_queue_work(&local->hw,
|
|
&ifmgd->csa_connection_drop_work);
|
|
return;
|
|
}
|
|
|
|
if (beacon && sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) {
|
|
if (res)
|
|
ieee80211_sta_abort_chanswitch(sdata);
|
|
else
|
|
drv_channel_switch_rx_beacon(sdata, &ch_switch);
|
|
return;
|
|
} else if (sdata->vif.csa_active || res) {
|
|
/* disregard subsequent announcements if already processing */
|
|
return;
|
|
}
|
|
|
|
if (sdata->vif.bss_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",
|
|
ifmgd->associated->bssid,
|
|
csa_ie.chandef.chan->center_freq,
|
|
csa_ie.chandef.width, csa_ie.chandef.center_freq1,
|
|
csa_ie.chandef.center_freq2);
|
|
goto lock_and_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",
|
|
ifmgd->associated->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 lock_and_drop_connection;
|
|
}
|
|
|
|
if (cfg80211_chandef_identical(&csa_ie.chandef,
|
|
&sdata->vif.bss_conf.chandef) &&
|
|
(!csa_ie.mode || !beacon)) {
|
|
if (ifmgd->csa_ignored_same_chan)
|
|
return;
|
|
sdata_info(sdata,
|
|
"AP %pM tries to chanswitch to same channel, ignore\n",
|
|
ifmgd->associated->bssid);
|
|
ifmgd->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);
|
|
|
|
mutex_lock(&local->mtx);
|
|
mutex_lock(&local->chanctx_mtx);
|
|
conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
|
|
lockdep_is_held(&local->chanctx_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_vif_reserve_chanctx(sdata, &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;
|
|
}
|
|
mutex_unlock(&local->chanctx_mtx);
|
|
|
|
sdata->vif.csa_active = true;
|
|
sdata->csa_chandef = csa_ie.chandef;
|
|
sdata->csa_block_tx = csa_ie.mode;
|
|
ifmgd->csa_ignored_same_chan = false;
|
|
ifmgd->beacon_crc_valid = false;
|
|
|
|
if (sdata->csa_block_tx)
|
|
ieee80211_stop_vif_queues(local, sdata,
|
|
IEEE80211_QUEUE_STOP_REASON_CSA);
|
|
mutex_unlock(&local->mtx);
|
|
|
|
cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef,
|
|
csa_ie.count, csa_ie.mode);
|
|
|
|
if (local->ops->channel_switch) {
|
|
/* use driver's channel switch callback */
|
|
drv_channel_switch(local, sdata, &ch_switch);
|
|
return;
|
|
}
|
|
|
|
/* channel switch handled in software */
|
|
if (csa_ie.count <= 1)
|
|
ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work);
|
|
else
|
|
mod_timer(&ifmgd->chswitch_timer,
|
|
TU_TO_EXP_TIME((csa_ie.count - 1) *
|
|
cbss->beacon_interval));
|
|
return;
|
|
lock_and_drop_connection:
|
|
mutex_lock(&local->mtx);
|
|
mutex_lock(&local->chanctx_mtx);
|
|
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.
|
|
*/
|
|
sdata->vif.csa_active = true;
|
|
sdata->csa_block_tx = csa_ie.mode;
|
|
|
|
ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work);
|
|
mutex_unlock(&local->chanctx_mtx);
|
|
mutex_unlock(&local->mtx);
|
|
}
|
|
|
|
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:
|
|
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 u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
|
|
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)
|
|
{
|
|
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 (sdata->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,
|
|
sdata->u.mgd.bssid);
|
|
} else { /* has_cisco_pwr is always true here. */
|
|
new_ap_level = pwr_level_cisco;
|
|
|
|
if (sdata->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, sdata->u.mgd.bssid);
|
|
}
|
|
|
|
sdata->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);
|
|
cancel_work_sync(&local->dynamic_ps_enable_work);
|
|
}
|
|
}
|
|
|
|
static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
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 (!mgd->have_beacon)
|
|
return false;
|
|
|
|
rcu_read_lock();
|
|
sta = sta_info_get(sdata, mgd->bssid);
|
|
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)) {
|
|
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->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.bss_conf.ps != ps_allowed) {
|
|
sdata->vif.bss_conf.ps = ps_allowed;
|
|
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
|
|
}
|
|
}
|
|
|
|
void ieee80211_dynamic_ps_disable_work(struct work_struct *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 work_struct *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);
|
|
|
|
ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
|
|
}
|
|
|
|
void ieee80211_dfs_cac_timer_work(struct work_struct *work)
|
|
{
|
|
struct delayed_work *delayed_work = to_delayed_work(work);
|
|
struct ieee80211_sub_if_data *sdata =
|
|
container_of(delayed_work, struct ieee80211_sub_if_data,
|
|
dfs_cac_timer_work);
|
|
struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef;
|
|
|
|
mutex_lock(&sdata->local->mtx);
|
|
if (sdata->wdev.cac_started) {
|
|
ieee80211_vif_release_channel(sdata);
|
|
cfg80211_cac_event(sdata->dev, &chandef,
|
|
NL80211_RADAR_CAC_FINISHED,
|
|
GFP_KERNEL);
|
|
}
|
|
mutex_unlock(&sdata->local->mtx);
|
|
}
|
|
|
|
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, ac, &sdata->tx_conf[ac]))
|
|
sdata_err(sdata,
|
|
"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, ac,
|
|
&sdata->tx_conf[non_acm_ac]))
|
|
sdata_err(sdata,
|
|
"failed to set TX queue parameters for queue %d\n",
|
|
ac);
|
|
tx_tspec->action = TX_TSPEC_ACTION_NONE;
|
|
ret = true;
|
|
schedule_delayed_work(&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_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
|
|
}
|
|
|
|
static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct *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);
|
|
}
|
|
|
|
/* MLME */
|
|
static bool
|
|
ieee80211_sta_wmm_params(struct ieee80211_local *local,
|
|
struct ieee80211_sub_if_data *sdata,
|
|
const u8 *wmm_param, size_t wmm_param_len,
|
|
const struct ieee80211_mu_edca_param_set *mu_edca)
|
|
{
|
|
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 == ifmgd->wmm_last_param_set &&
|
|
mu_edca_count == ifmgd->mu_edca_last_param_set)
|
|
return false;
|
|
ifmgd->wmm_last_param_set = count;
|
|
ifmgd->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) {
|
|
sdata_info(sdata,
|
|
"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) {
|
|
sdata_info(sdata,
|
|
"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) {
|
|
sdata_info(sdata,
|
|
"AP has invalid WMM params (missing AC %d), using defaults\n",
|
|
ac);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
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);
|
|
sdata->tx_conf[ac] = params[ac];
|
|
if (!ifmgd->tx_tspec[ac].downgraded &&
|
|
drv_conf_tx(local, sdata, ac, ¶ms[ac]))
|
|
sdata_err(sdata,
|
|
"failed to set TX queue parameters for AC %d\n",
|
|
ac);
|
|
}
|
|
|
|
/* enable WMM or activate new settings */
|
|
sdata->vif.bss_conf.qos = true;
|
|
return true;
|
|
}
|
|
|
|
static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
lockdep_assert_held(&sdata->local->mtx);
|
|
|
|
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)
|
|
{
|
|
mutex_lock(&sdata->local->mtx);
|
|
__ieee80211_stop_poll(sdata);
|
|
mutex_unlock(&sdata->local->mtx);
|
|
}
|
|
|
|
static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
|
|
u16 capab, bool erp_valid, u8 erp)
|
|
{
|
|
struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
|
|
struct ieee80211_supported_band *sband;
|
|
u32 changed = 0;
|
|
bool use_protection;
|
|
bool use_short_preamble;
|
|
bool use_short_slot;
|
|
|
|
sband = ieee80211_get_sband(sdata);
|
|
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 void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
|
|
struct cfg80211_bss *cbss,
|
|
u32 bss_info_changed)
|
|
{
|
|
struct ieee80211_bss *bss = (void *)cbss->priv;
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
|
|
|
|
bss_info_changed |= BSS_CHANGED_ASSOC;
|
|
bss_info_changed |= ieee80211_handle_bss_capability(sdata,
|
|
bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
|
|
|
|
sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
|
|
beacon_loss_count * bss_conf->beacon_int));
|
|
|
|
sdata->u.mgd.associated = cbss;
|
|
memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
|
|
|
|
ieee80211_check_rate_mask(sdata);
|
|
|
|
sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
|
|
|
|
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) {
|
|
sdata->u.mgd.p2p_noa_index =
|
|
bss_conf->p2p_noa_attr.index;
|
|
bss_info_changed |= BSS_CHANGED_P2P_PS;
|
|
}
|
|
}
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
/* just to be sure */
|
|
ieee80211_stop_poll(sdata);
|
|
|
|
ieee80211_led_assoc(local, 1);
|
|
|
|
if (sdata->u.mgd.have_beacon) {
|
|
/*
|
|
* If the AP is buggy we may get here with no DTIM period
|
|
* known, so assume it's 1 which is the only safe assumption
|
|
* in that case, although if the TIM IE is broken powersave
|
|
* probably just won't work at all.
|
|
*/
|
|
bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
|
|
bss_conf->beacon_rate = bss->beacon_rate;
|
|
bss_info_changed |= BSS_CHANGED_BEACON_INFO;
|
|
} else {
|
|
bss_conf->beacon_rate = NULL;
|
|
bss_conf->dtim_period = 0;
|
|
}
|
|
|
|
bss_conf->assoc = 1;
|
|
|
|
/* Tell the driver to monitor connection quality (if supported) */
|
|
if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
|
|
bss_conf->cqm_rssi_thold)
|
|
bss_info_changed |= BSS_CHANGED_CQM;
|
|
|
|
/* Enable ARP filtering */
|
|
if (bss_conf->arp_addr_cnt)
|
|
bss_info_changed |= BSS_CHANGED_ARP_FILTER;
|
|
|
|
ieee80211_bss_info_change_notify(sdata, bss_info_changed);
|
|
|
|
mutex_lock(&local->iflist_mtx);
|
|
ieee80211_recalc_ps(local);
|
|
mutex_unlock(&local->iflist_mtx);
|
|
|
|
ieee80211_recalc_smps(sdata);
|
|
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;
|
|
u32 changed = 0;
|
|
|
|
sdata_assert_lock(sdata);
|
|
|
|
if (WARN_ON_ONCE(tx && !frame_buf))
|
|
return;
|
|
|
|
if (WARN_ON(!ifmgd->associated))
|
|
return;
|
|
|
|
ieee80211_stop_poll(sdata);
|
|
|
|
ifmgd->associated = 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) &&
|
|
!ifmgd->have_beacon)
|
|
drv_mgd_prepare_tx(sdata->local, sdata, 0);
|
|
|
|
ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid,
|
|
ifmgd->bssid, stype, reason,
|
|
tx, frame_buf);
|
|
}
|
|
|
|
/* flush out frame - make sure the deauth was actually sent */
|
|
if (tx)
|
|
ieee80211_flush_queues(local, sdata, false);
|
|
|
|
/* clear bssid only after building the needed mgmt frames */
|
|
eth_zero_addr(ifmgd->bssid);
|
|
|
|
sdata->vif.bss_conf.ssid_len = 0;
|
|
|
|
/* remove AP and TDLS peers */
|
|
sta_info_flush(sdata);
|
|
|
|
/* finally reset all BSS / config parameters */
|
|
changed |= ieee80211_reset_erp_info(sdata);
|
|
|
|
ieee80211_led_assoc(local, 0);
|
|
changed |= BSS_CHANGED_ASSOC;
|
|
sdata->vif.bss_conf.assoc = false;
|
|
|
|
ifmgd->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 */
|
|
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));
|
|
changed |= BSS_CHANGED_MU_GROUPS;
|
|
sdata->vif.mu_mimo_owner = false;
|
|
|
|
sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
|
|
|
|
del_timer_sync(&local->dynamic_ps_timer);
|
|
cancel_work_sync(&local->dynamic_ps_enable_work);
|
|
|
|
/* Disable ARP filtering */
|
|
if (sdata->vif.bss_conf.arp_addr_cnt)
|
|
changed |= BSS_CHANGED_ARP_FILTER;
|
|
|
|
sdata->vif.bss_conf.qos = false;
|
|
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);
|
|
|
|
/* disassociated - set to defaults now */
|
|
ieee80211_set_wmm_default(sdata, 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);
|
|
del_timer_sync(&sdata->u.mgd.chswitch_timer);
|
|
|
|
sdata->vif.bss_conf.dtim_period = 0;
|
|
sdata->vif.bss_conf.beacon_rate = NULL;
|
|
|
|
ifmgd->have_beacon = false;
|
|
|
|
ifmgd->flags = 0;
|
|
mutex_lock(&local->mtx);
|
|
ieee80211_vif_release_channel(sdata);
|
|
|
|
sdata->vif.csa_active = false;
|
|
ifmgd->csa_waiting_bcn = false;
|
|
ifmgd->csa_ignored_same_chan = false;
|
|
if (sdata->csa_block_tx) {
|
|
ieee80211_wake_vif_queues(local, sdata,
|
|
IEEE80211_QUEUE_STOP_REASON_CSA);
|
|
sdata->csa_block_tx = false;
|
|
}
|
|
mutex_unlock(&local->mtx);
|
|
|
|
/* existing TX TSPEC sessions no longer exist */
|
|
memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec));
|
|
cancel_delayed_work_sync(&ifmgd->tx_tspec_wk);
|
|
|
|
sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM;
|
|
}
|
|
|
|
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;
|
|
|
|
mutex_lock(&local->mtx);
|
|
if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL))
|
|
goto out;
|
|
|
|
__ieee80211_stop_poll(sdata);
|
|
|
|
mutex_lock(&local->iflist_mtx);
|
|
ieee80211_recalc_ps(local);
|
|
mutex_unlock(&local->iflist_mtx);
|
|
|
|
if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
|
|
goto out;
|
|
|
|
/*
|
|
* 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));
|
|
out:
|
|
mutex_unlock(&local->mtx);
|
|
}
|
|
|
|
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 = ieee80211_get_tid(hdr);
|
|
int ac = ieee80211_ac_from_tid(tid);
|
|
struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
|
|
unsigned long now = jiffies;
|
|
|
|
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;
|
|
schedule_delayed_work(&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;
|
|
schedule_delayed_work(&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;
|
|
ieee80211_queue_work(&sdata->local->hw, &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;
|
|
const u8 *ssid;
|
|
u8 *dst = ifmgd->associated->bssid;
|
|
u8 unicast_limit = max(1, max_probe_tries - 3);
|
|
struct sta_info *sta;
|
|
|
|
/*
|
|
* 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) {
|
|
mutex_lock(&sdata->local->sta_mtx);
|
|
sta = sta_info_get(sdata, dst);
|
|
if (!WARN_ON(!sta))
|
|
ieee80211_check_fast_rx(sta);
|
|
mutex_unlock(&sdata->local->sta_mtx);
|
|
}
|
|
|
|
if (ieee80211_hw_check(&sdata->local->hw, REPORTS_TX_ACK_STATUS)) {
|
|
ifmgd->nullfunc_failed = false;
|
|
if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
|
|
ifmgd->probe_send_count--;
|
|
else
|
|
ieee80211_send_nullfunc(sdata->local, sdata, false);
|
|
} else {
|
|
int ssid_len;
|
|
|
|
rcu_read_lock();
|
|
ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
|
|
if (WARN_ON_ONCE(ssid == NULL))
|
|
ssid_len = 0;
|
|
else
|
|
ssid_len = ssid[1];
|
|
|
|
ieee80211_mlme_send_probe_req(sdata, sdata->vif.addr, dst,
|
|
ssid + 2, ssid_len,
|
|
ifmgd->associated->channel);
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
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;
|
|
|
|
if (!ieee80211_sdata_running(sdata))
|
|
return;
|
|
|
|
sdata_lock(sdata);
|
|
|
|
if (!ifmgd->associated)
|
|
goto out;
|
|
|
|
mutex_lock(&sdata->local->mtx);
|
|
|
|
if (sdata->local->tmp_channel || sdata->local->scanning) {
|
|
mutex_unlock(&sdata->local->mtx);
|
|
goto out;
|
|
}
|
|
|
|
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;
|
|
|
|
mutex_unlock(&sdata->local->mtx);
|
|
|
|
if (already)
|
|
goto out;
|
|
|
|
mutex_lock(&sdata->local->iflist_mtx);
|
|
ieee80211_recalc_ps(sdata->local);
|
|
mutex_unlock(&sdata->local->iflist_mtx);
|
|
|
|
ifmgd->probe_send_count = 0;
|
|
ieee80211_mgd_probe_ap_send(sdata);
|
|
out:
|
|
sdata_unlock(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 u8 *ssid;
|
|
int ssid_len;
|
|
|
|
if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
|
|
return NULL;
|
|
|
|
sdata_assert_lock(sdata);
|
|
|
|
if (ifmgd->associated)
|
|
cbss = ifmgd->associated;
|
|
else if (ifmgd->auth_data)
|
|
cbss = ifmgd->auth_data->bss;
|
|
else if (ifmgd->assoc_data)
|
|
cbss = ifmgd->assoc_data->bss;
|
|
else
|
|
return NULL;
|
|
|
|
rcu_read_lock();
|
|
ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID);
|
|
if (WARN_ONCE(!ssid || ssid[1] > IEEE80211_MAX_SSID_LEN,
|
|
"invalid SSID element (len=%d)", ssid ? ssid[1] : -1))
|
|
ssid_len = 0;
|
|
else
|
|
ssid_len = ssid[1];
|
|
|
|
skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid,
|
|
(u32) -1, cbss->channel,
|
|
ssid + 2, 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;
|
|
|
|
sdata_lock(sdata);
|
|
if (!ifmgd->associated) {
|
|
sdata_unlock(sdata);
|
|
return;
|
|
}
|
|
|
|
tx = !sdata->csa_block_tx;
|
|
|
|
if (!ifmgd->driver_disconnect) {
|
|
/*
|
|
* AP is probably out of range (or not reachable for another
|
|
* reason) so remove the bss struct for that AP.
|
|
*/
|
|
cfg80211_unlink_bss(local->hw.wiphy, ifmgd->associated);
|
|
}
|
|
|
|
ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
|
|
ifmgd->driver_disconnect ?
|
|
WLAN_REASON_DEAUTH_LEAVING :
|
|
WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
|
|
tx, frame_buf);
|
|
mutex_lock(&local->mtx);
|
|
sdata->vif.csa_active = false;
|
|
ifmgd->csa_waiting_bcn = false;
|
|
if (sdata->csa_block_tx) {
|
|
ieee80211_wake_vif_queues(local, sdata,
|
|
IEEE80211_QUEUE_STOP_REASON_CSA);
|
|
sdata->csa_block_tx = false;
|
|
}
|
|
mutex_unlock(&local->mtx);
|
|
|
|
ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), tx,
|
|
WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
|
|
ifmgd->reconnect);
|
|
ifmgd->reconnect = false;
|
|
|
|
sdata_unlock(sdata);
|
|
}
|
|
|
|
static void ieee80211_beacon_connection_loss_work(struct work_struct *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->associated)
|
|
ifmgd->beacon_loss_count++;
|
|
|
|
if (ifmgd->connection_loss) {
|
|
sdata_info(sdata, "Connection to AP %pM lost\n",
|
|
ifmgd->bssid);
|
|
__ieee80211_disconnect(sdata);
|
|
ifmgd->connection_loss = false;
|
|
} else if (ifmgd->driver_disconnect) {
|
|
sdata_info(sdata,
|
|
"Driver requested disconnection from AP %pM\n",
|
|
ifmgd->bssid);
|
|
__ieee80211_disconnect(sdata);
|
|
ifmgd->driver_disconnect = false;
|
|
} else {
|
|
ieee80211_mgd_probe_ap(sdata, true);
|
|
}
|
|
}
|
|
|
|
static void ieee80211_csa_connection_drop_work(struct work_struct *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;
|
|
ieee80211_queue_work(hw, &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;
|
|
ieee80211_queue_work(hw, &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;
|
|
ieee80211_queue_work(hw, &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;
|
|
|
|
sdata_assert_lock(sdata);
|
|
|
|
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->bss->bssid);
|
|
|
|
eth_zero_addr(sdata->u.mgd.bssid);
|
|
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
|
|
sdata->u.mgd.flags = 0;
|
|
mutex_lock(&sdata->local->mtx);
|
|
ieee80211_vif_release_channel(sdata);
|
|
mutex_unlock(&sdata->local->mtx);
|
|
}
|
|
|
|
cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
|
|
kfree(auth_data);
|
|
sdata->u.mgd.auth_data = NULL;
|
|
}
|
|
|
|
static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
|
|
bool assoc, bool abandon)
|
|
{
|
|
struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
|
|
|
|
sdata_assert_lock(sdata);
|
|
|
|
if (!assoc) {
|
|
/*
|
|
* 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->bss->bssid);
|
|
|
|
eth_zero_addr(sdata->u.mgd.bssid);
|
|
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
|
|
sdata->u.mgd.flags = 0;
|
|
sdata->vif.mu_mimo_owner = false;
|
|
|
|
mutex_lock(&sdata->local->mtx);
|
|
ieee80211_vif_release_channel(sdata);
|
|
mutex_unlock(&sdata->local->mtx);
|
|
|
|
if (abandon)
|
|
cfg80211_abandon_assoc(sdata->dev, assoc_data->bss);
|
|
}
|
|
|
|
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;
|
|
u8 *pos;
|
|
struct ieee802_11_elems elems;
|
|
u32 tx_flags = 0;
|
|
|
|
pos = mgmt->u.auth.variable;
|
|
ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, &elems,
|
|
mgmt->bssid, auth_data->bss->bssid);
|
|
if (!elems.challenge)
|
|
return;
|
|
auth_data->expected_transaction = 4;
|
|
drv_mgd_prepare_tx(sdata->local, sdata, 0);
|
|
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,
|
|
elems.challenge - 2, elems.challenge_len + 2,
|
|
auth_data->bss->bssid, auth_data->bss->bssid,
|
|
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,
|
|
const u8 *bssid)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct sta_info *sta;
|
|
bool result = true;
|
|
|
|
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 */
|
|
mutex_lock(&sdata->local->sta_mtx);
|
|
sta = sta_info_get(sdata, bssid);
|
|
if (!sta) {
|
|
WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid);
|
|
result = false;
|
|
goto out;
|
|
}
|
|
if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
|
|
sdata_info(sdata, "failed moving %pM to auth\n", bssid);
|
|
result = false;
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
mutex_unlock(&sdata->local->sta_mtx);
|
|
return result;
|
|
}
|
|
|
|
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;
|
|
u8 bssid[ETH_ALEN];
|
|
u16 auth_alg, auth_transaction, status_code;
|
|
struct ieee80211_event event = {
|
|
.type = MLME_EVENT,
|
|
.u.mlme.data = AUTH_EVENT,
|
|
};
|
|
|
|
sdata_assert_lock(sdata);
|
|
|
|
if (len < 24 + 6)
|
|
return;
|
|
|
|
if (!ifmgd->auth_data || ifmgd->auth_data->done)
|
|
return;
|
|
|
|
memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
|
|
|
|
if (!ether_addr_equal(bssid, 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);
|
|
return;
|
|
}
|
|
|
|
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))))
|
|
return;
|
|
|
|
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);
|
|
return;
|
|
}
|
|
|
|
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);
|
|
return;
|
|
}
|
|
|
|
event.u.mlme.status = MLME_SUCCESS;
|
|
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, bssid))
|
|
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);
|
|
}
|
|
|
|
#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);
|
|
|
|
sdata_assert_lock(sdata);
|
|
|
|
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, ifmgd->associated->bssid)) {
|
|
const u8 *bssid = ifmgd->associated->bssid;
|
|
|
|
sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n",
|
|
bssid, 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->bss->bssid)) {
|
|
const u8 *bssid = ifmgd->assoc_data->bss->bssid;
|
|
|
|
sdata_info(sdata,
|
|
"deauthenticated from %pM while associating (Reason: %u=%s)\n",
|
|
bssid, reason_code,
|
|
ieee80211_get_reason_code_string(reason_code));
|
|
|
|
ieee80211_destroy_assoc_data(sdata, false, true);
|
|
|
|
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;
|
|
|
|
sdata_assert_lock(sdata);
|
|
|
|
if (len < 24 + 2)
|
|
return;
|
|
|
|
if (!ifmgd->associated ||
|
|
!ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
|
|
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",
|
|
mgmt->sa, 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 shift)
|
|
{
|
|
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 * (1 << shift)) > 110)
|
|
*have_higher_than_11mbit = true;
|
|
|
|
/*
|
|
* Skip HT, VHT, HE 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_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, (1 << shift) * 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(const struct sta_info *sta,
|
|
const struct ieee802_11_elems *elems)
|
|
{
|
|
if (elems->ext_capab_len < 10)
|
|
return false;
|
|
|
|
if (!(elems->ext_capab[9] & WLAN_EXT_CAPA10_TWT_RESPONDER_SUPPORT))
|
|
return false;
|
|
|
|
return sta->sta.he_cap.he_cap_elem.mac_cap_info[0] &
|
|
IEEE80211_HE_MAC_CAP0_TWT_RES;
|
|
}
|
|
|
|
static int ieee80211_recalc_twt_req(struct ieee80211_sub_if_data *sdata,
|
|
struct sta_info *sta,
|
|
struct ieee802_11_elems *elems)
|
|
{
|
|
bool twt = ieee80211_twt_req_supported(sta, elems);
|
|
|
|
if (sdata->vif.bss_conf.twt_requester != twt) {
|
|
sdata->vif.bss_conf.twt_requester = twt;
|
|
return BSS_CHANGED_TWT;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
|
|
struct cfg80211_bss *cbss,
|
|
struct ieee80211_mgmt *mgmt, size_t len,
|
|
struct ieee802_11_elems *elems)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_supported_band *sband;
|
|
struct sta_info *sta;
|
|
u16 capab_info, aid;
|
|
struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
|
|
const struct cfg80211_bss_ies *bss_ies = NULL;
|
|
struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
|
|
bool is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ;
|
|
bool is_s1g = cbss->channel->band == NL80211_BAND_S1GHZ;
|
|
u32 changed = 0;
|
|
u8 *pos;
|
|
int err;
|
|
bool ret;
|
|
|
|
/* AssocResp and ReassocResp have identical structure */
|
|
|
|
pos = mgmt->u.assoc_resp.variable;
|
|
aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
|
|
if (is_s1g) {
|
|
pos = (u8 *) mgmt->u.s1g_assoc_resp.variable;
|
|
aid = 0; /* TODO */
|
|
}
|
|
capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
|
|
ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, elems,
|
|
mgmt->bssid, assoc_data->bss->bssid);
|
|
|
|
if (elems->aid_resp)
|
|
aid = le16_to_cpu(elems->aid_resp->aid);
|
|
|
|
/*
|
|
* The 5 MSB of the AID field are reserved
|
|
* (802.11-2016 9.4.1.8 AID field)
|
|
*/
|
|
aid &= 0x7ff;
|
|
|
|
ifmgd->broken_ap = false;
|
|
|
|
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 (!is_s1g && !elems->supp_rates) {
|
|
sdata_info(sdata, "no SuppRates element in AssocResp\n");
|
|
return false;
|
|
}
|
|
|
|
sdata->vif.bss_conf.aid = aid;
|
|
ifmgd->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) ||
|
|
(!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
|
|
(!elems->ht_cap_elem || !elems->ht_operation)) ||
|
|
(!(ifmgd->flags & IEEE80211_STA_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)
|
|
return false;
|
|
|
|
ieee802_11_parse_elems(bss_ies->data, bss_ies->len,
|
|
false, &bss_elems,
|
|
mgmt->bssid,
|
|
assoc_data->bss->bssid);
|
|
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 &&
|
|
!(ifmgd->flags & IEEE80211_STA_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 &&
|
|
!(ifmgd->flags & IEEE80211_STA_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 &&
|
|
!(ifmgd->flags & IEEE80211_STA_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 &&
|
|
!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
|
|
elems->vht_operation = bss_elems.vht_operation;
|
|
sdata_info(sdata,
|
|
"AP bug: VHT operation missing from AssocResp\n");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We previously checked these in the beacon/probe response, so
|
|
* they should be present here. This is just a safety net.
|
|
*/
|
|
if (!is_6ghz && !(ifmgd->flags & IEEE80211_STA_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 && !(ifmgd->flags & IEEE80211_STA_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 && !(ifmgd->flags & IEEE80211_STA_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;
|
|
}
|
|
|
|
mutex_lock(&sdata->local->sta_mtx);
|
|
/*
|
|
* station info was already allocated and inserted before
|
|
* the association and should be available to us
|
|
*/
|
|
sta = sta_info_get(sdata, cbss->bssid);
|
|
if (WARN_ON(!sta)) {
|
|
mutex_unlock(&sdata->local->sta_mtx);
|
|
ret = false;
|
|
goto out;
|
|
}
|
|
|
|
sband = ieee80211_get_sband(sdata);
|
|
if (!sband) {
|
|
mutex_unlock(&sdata->local->sta_mtx);
|
|
ret = false;
|
|
goto out;
|
|
}
|
|
|
|
if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE) &&
|
|
(!elems->he_cap || !elems->he_operation)) {
|
|
mutex_unlock(&sdata->local->sta_mtx);
|
|
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 && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
|
|
ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
|
|
elems->ht_cap_elem, sta);
|
|
|
|
if (elems->vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
|
|
ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
|
|
elems->vht_cap_elem, sta);
|
|
|
|
if (elems->he_operation && !(ifmgd->flags & IEEE80211_STA_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,
|
|
sta);
|
|
|
|
bss_conf->he_support = sta->sta.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, sta, elems);
|
|
} else {
|
|
bss_conf->he_support = false;
|
|
bss_conf->twt_requester = false;
|
|
bss_conf->twt_protected = false;
|
|
}
|
|
|
|
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;
|
|
sta->sta.rx_nss = nss;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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));
|
|
mutex_unlock(&sdata->local->sta_mtx);
|
|
ret = false;
|
|
goto out;
|
|
}
|
|
|
|
if (sdata->wdev.use_4addr)
|
|
drv_sta_set_4addr(local, sdata, &sta->sta, true);
|
|
|
|
mutex_unlock(&sdata->local->sta_mtx);
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
ifmgd->wmm_last_param_set = -1;
|
|
ifmgd->mu_edca_last_param_set = -1;
|
|
|
|
if (ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
|
|
ieee80211_set_wmm_default(sdata, false, false);
|
|
} else if (!ieee80211_sta_wmm_params(local, sdata, 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(sdata, false, true);
|
|
/* set the disable-WMM flag 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.
|
|
*/
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_WMM;
|
|
}
|
|
changed |= BSS_CHANGED_QOS;
|
|
|
|
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;
|
|
ieee80211_set_associated(sdata, cbss, 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);
|
|
|
|
ret = true;
|
|
out:
|
|
kfree(bss_ies);
|
|
return ret;
|
|
}
|
|
|
|
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 ieee802_11_elems elems;
|
|
int ac, uapsd_queues = -1;
|
|
u8 *pos;
|
|
bool reassoc;
|
|
struct cfg80211_bss *cbss;
|
|
struct ieee80211_event event = {
|
|
.type = MLME_EVENT,
|
|
.u.mlme.data = ASSOC_EVENT,
|
|
};
|
|
|
|
sdata_assert_lock(sdata);
|
|
|
|
if (!assoc_data)
|
|
return;
|
|
|
|
if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
|
|
return;
|
|
|
|
cbss = assoc_data->bss;
|
|
|
|
/*
|
|
* 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);
|
|
pos = mgmt->u.assoc_resp.variable;
|
|
aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
|
|
if (cbss->channel->band == NL80211_BAND_S1GHZ) {
|
|
pos = (u8 *) mgmt->u.s1g_assoc_resp.variable;
|
|
aid = 0; /* TODO */
|
|
}
|
|
|
|
sdata_info(sdata,
|
|
"RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
|
|
reassoc ? "Rea" : "A", mgmt->sa,
|
|
capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
|
|
|
|
if (assoc_data->fils_kek_len &&
|
|
fils_decrypt_assoc_resp(sdata, (u8 *)mgmt, &len, assoc_data) < 0)
|
|
return;
|
|
|
|
ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, &elems,
|
|
mgmt->bssid, assoc_data->bss->bssid);
|
|
|
|
if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
|
|
elems.timeout_int &&
|
|
elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
|
|
u32 tu, ms;
|
|
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",
|
|
mgmt->sa, 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);
|
|
return;
|
|
}
|
|
|
|
if (status_code != WLAN_STATUS_SUCCESS) {
|
|
sdata_info(sdata, "%pM denied association (code=%d)\n",
|
|
mgmt->sa, status_code);
|
|
ieee80211_destroy_assoc_data(sdata, false, false);
|
|
event.u.mlme.status = MLME_DENIED;
|
|
event.u.mlme.reason = status_code;
|
|
drv_event_callback(sdata->local, sdata, &event);
|
|
} else {
|
|
if (!ieee80211_assoc_success(sdata, cbss, mgmt, len, &elems)) {
|
|
/* oops -- internal error -- send timeout for now */
|
|
ieee80211_destroy_assoc_data(sdata, false, false);
|
|
cfg80211_assoc_timeout(sdata->dev, cbss);
|
|
return;
|
|
}
|
|
event.u.mlme.status = MLME_SUCCESS;
|
|
drv_event_callback(sdata->local, sdata, &event);
|
|
sdata_info(sdata, "associated\n");
|
|
|
|
/*
|
|
* destroy assoc_data afterwards, as otherwise an idle
|
|
* recalc after assoc_data is NULL but before associated
|
|
* is set can cause the interface to go idle
|
|
*/
|
|
ieee80211_destroy_assoc_data(sdata, true, false);
|
|
|
|
/* get uapsd queues configuration */
|
|
uapsd_queues = 0;
|
|
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
|
|
if (sdata->tx_conf[ac].uapsd)
|
|
uapsd_queues |= ieee80211_ac_to_qos_mask[ac];
|
|
}
|
|
|
|
cfg80211_rx_assoc_resp(sdata->dev, cbss, (u8 *)mgmt, len, uapsd_queues,
|
|
ifmgd->assoc_req_ies, ifmgd->assoc_req_ies_len);
|
|
}
|
|
|
|
static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_mgmt *mgmt, size_t len,
|
|
struct ieee80211_rx_status *rx_status)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_bss *bss;
|
|
struct ieee80211_channel *channel;
|
|
|
|
sdata_assert_lock(sdata);
|
|
|
|
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) {
|
|
sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
|
|
ieee80211_rx_bss_put(local, bss);
|
|
}
|
|
}
|
|
|
|
|
|
static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
|
|
struct sk_buff *skb)
|
|
{
|
|
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;
|
|
|
|
sdata_assert_lock(sdata);
|
|
|
|
/*
|
|
* 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(sdata, mgmt, len, rx_status);
|
|
|
|
if (ifmgd->associated &&
|
|
ether_addr_equal(mgmt->bssid, ifmgd->associated->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_sub_if_data *sdata,
|
|
struct ieee80211_if_managed *ifmgd,
|
|
struct ieee80211_bss_conf *bss_conf,
|
|
struct ieee80211_local *local,
|
|
struct ieee80211_rx_status *rx_status)
|
|
{
|
|
/* Track average RSSI from the Beacon frames of the current AP */
|
|
|
|
if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
|
|
ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
|
|
ewma_beacon_signal_init(&ifmgd->ave_beacon_signal);
|
|
ifmgd->last_cqm_event_signal = 0;
|
|
ifmgd->count_beacon_signal = 1;
|
|
ifmgd->last_ave_beacon_signal = 0;
|
|
} else {
|
|
ifmgd->count_beacon_signal++;
|
|
}
|
|
|
|
ewma_beacon_signal_add(&ifmgd->ave_beacon_signal, -rx_status->signal);
|
|
|
|
if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
|
|
ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
|
|
int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
|
|
int last_sig = ifmgd->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)) {
|
|
ifmgd->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)) {
|
|
ifmgd->last_ave_beacon_signal = sig;
|
|
event.u.rssi.data = RSSI_EVENT_LOW;
|
|
drv_event_callback(local, sdata, &event);
|
|
}
|
|
}
|
|
|
|
if (bss_conf->cqm_rssi_thold &&
|
|
ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
|
|
!(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
|
|
int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
|
|
int last_event = ifmgd->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)) {
|
|
ifmgd->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)) {
|
|
ifmgd->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 &&
|
|
ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
|
|
int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
|
|
int last_event = ifmgd->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)) {
|
|
ifmgd->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)) {
|
|
ifmgd->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 void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_hdr *hdr, size_t len,
|
|
struct ieee80211_rx_status *rx_status)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
|
|
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_channel *chan;
|
|
struct sta_info *sta;
|
|
u32 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];
|
|
|
|
sdata_assert_lock(sdata);
|
|
|
|
/* 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;
|
|
|
|
rcu_read_lock();
|
|
chanctx_conf = rcu_dereference(sdata->vif.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 &&
|
|
ieee80211_rx_our_beacon(bssid, ifmgd->assoc_data->bss)) {
|
|
ieee802_11_parse_elems(variable,
|
|
len - baselen, false, &elems,
|
|
bssid,
|
|
ifmgd->assoc_data->bss->bssid);
|
|
|
|
ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
|
|
|
|
if (elems.dtim_period)
|
|
ifmgd->dtim_period = elems.dtim_period;
|
|
ifmgd->have_beacon = true;
|
|
ifmgd->assoc_data->need_beacon = false;
|
|
if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
|
|
sdata->vif.bss_conf.sync_tsf =
|
|
le64_to_cpu(mgmt->u.beacon.timestamp);
|
|
sdata->vif.bss_conf.sync_device_ts =
|
|
rx_status->device_timestamp;
|
|
sdata->vif.bss_conf.sync_dtim_count = elems.dtim_count;
|
|
}
|
|
|
|
if (elems.mbssid_config_ie)
|
|
bss_conf->profile_periodicity =
|
|
elems.mbssid_config_ie->profile_periodicity;
|
|
|
|
if (elems.ext_capab_len >= 11 &&
|
|
(elems.ext_capab[10] & WLAN_EXT_CAPA11_EMA_SUPPORT))
|
|
bss_conf->ema_ap = true;
|
|
|
|
/* continue assoc process */
|
|
ifmgd->assoc_data->timeout = jiffies;
|
|
ifmgd->assoc_data->timeout_started = true;
|
|
run_again(sdata, ifmgd->assoc_data->timeout);
|
|
return;
|
|
}
|
|
|
|
if (!ifmgd->associated ||
|
|
!ieee80211_rx_our_beacon(bssid, ifmgd->associated))
|
|
return;
|
|
bssid = ifmgd->associated->bssid;
|
|
|
|
if (!(rx_status->flag & RX_FLAG_NO_SIGNAL_VAL))
|
|
ieee80211_handle_beacon_sig(sdata, 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);
|
|
ncrc = ieee802_11_parse_elems_crc(variable,
|
|
len - baselen, false, &elems,
|
|
care_about_ies, ncrc,
|
|
mgmt->bssid, bssid);
|
|
|
|
if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
|
|
ieee80211_check_tim(elems.tim, elems.tim_len, bss_conf->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 (sdata->u.mgd.p2p_noa_index != noa.index) {
|
|
/* valid noa_attr and index changed */
|
|
sdata->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.
|
|
*/
|
|
ifmgd->beacon_crc_valid = false;
|
|
}
|
|
} else if (sdata->u.mgd.p2p_noa_index != -1) {
|
|
/* noa_attr not found and we had valid noa_attr before */
|
|
sdata->u.mgd.p2p_noa_index = -1;
|
|
memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
|
|
changed |= BSS_CHANGED_P2P_PS;
|
|
ifmgd->beacon_crc_valid = false;
|
|
}
|
|
}
|
|
|
|
if (ifmgd->csa_waiting_bcn)
|
|
ieee80211_chswitch_post_beacon(sdata);
|
|
|
|
/*
|
|
* 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)) {
|
|
sdata->vif.bss_conf.sync_tsf =
|
|
le64_to_cpu(mgmt->u.beacon.timestamp);
|
|
sdata->vif.bss_conf.sync_device_ts =
|
|
rx_status->device_timestamp;
|
|
sdata->vif.bss_conf.sync_dtim_count = elems.dtim_count;
|
|
}
|
|
|
|
if ((ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid) ||
|
|
ieee80211_is_s1g_short_beacon(mgmt->frame_control))
|
|
return;
|
|
ifmgd->beacon_crc = ncrc;
|
|
ifmgd->beacon_crc_valid = true;
|
|
|
|
ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
|
|
|
|
ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
|
|
rx_status->device_timestamp,
|
|
&elems, true);
|
|
|
|
if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) &&
|
|
ieee80211_sta_wmm_params(local, sdata, 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 (!ifmgd->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;
|
|
ifmgd->have_beacon = true;
|
|
|
|
mutex_lock(&local->iflist_mtx);
|
|
ieee80211_recalc_ps(local);
|
|
mutex_unlock(&local->iflist_mtx);
|
|
|
|
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(sdata,
|
|
le16_to_cpu(mgmt->u.beacon.capab_info),
|
|
erp_valid, erp_value);
|
|
|
|
mutex_lock(&local->sta_mtx);
|
|
sta = sta_info_get(sdata, bssid);
|
|
|
|
changed |= ieee80211_recalc_twt_req(sdata, sta, &elems);
|
|
|
|
if (ieee80211_config_bw(sdata, sta, elems.ht_cap_elem,
|
|
elems.vht_cap_elem, elems.ht_operation,
|
|
elems.vht_operation, elems.he_operation,
|
|
elems.s1g_oper, bssid, &changed)) {
|
|
mutex_unlock(&local->sta_mtx);
|
|
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);
|
|
return;
|
|
}
|
|
|
|
if (sta && elems.opmode_notif)
|
|
ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif,
|
|
rx_status->band);
|
|
mutex_unlock(&local->sta_mtx);
|
|
|
|
changed |= ieee80211_handle_pwr_constr(sdata, chan, mgmt,
|
|
elems.country_elem,
|
|
elems.country_elem_len,
|
|
elems.pwr_constr_elem,
|
|
elems.cisco_dtpc_elem);
|
|
|
|
ieee80211_bss_info_change_notify(sdata, changed);
|
|
}
|
|
|
|
void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct ieee80211_rx_status *rx_status;
|
|
struct ieee80211_hdr *hdr;
|
|
u16 fc;
|
|
|
|
rx_status = (struct ieee80211_rx_status *) skb->cb;
|
|
hdr = (struct ieee80211_hdr *) skb->data;
|
|
fc = le16_to_cpu(hdr->frame_control);
|
|
|
|
sdata_lock(sdata);
|
|
switch (fc & IEEE80211_FCTL_STYPE) {
|
|
case IEEE80211_STYPE_S1G_BEACON:
|
|
ieee80211_rx_mgmt_beacon(sdata, hdr, skb->len, rx_status);
|
|
break;
|
|
}
|
|
sdata_unlock(sdata);
|
|
}
|
|
|
|
void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct ieee80211_rx_status *rx_status;
|
|
struct ieee80211_mgmt *mgmt;
|
|
u16 fc;
|
|
struct ieee802_11_elems elems;
|
|
int ies_len;
|
|
|
|
rx_status = (struct ieee80211_rx_status *) skb->cb;
|
|
mgmt = (struct ieee80211_mgmt *) skb->data;
|
|
fc = le16_to_cpu(mgmt->frame_control);
|
|
|
|
sdata_lock(sdata);
|
|
|
|
switch (fc & IEEE80211_FCTL_STYPE) {
|
|
case IEEE80211_STYPE_BEACON:
|
|
ieee80211_rx_mgmt_beacon(sdata, (void *)mgmt,
|
|
skb->len, rx_status);
|
|
break;
|
|
case IEEE80211_STYPE_PROBE_RESP:
|
|
ieee80211_rx_mgmt_probe_resp(sdata, 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 (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
|
|
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 */
|
|
ieee802_11_parse_elems(
|
|
mgmt->u.action.u.chan_switch.variable,
|
|
ies_len, true, &elems, mgmt->bssid, NULL);
|
|
|
|
if (elems.parse_error)
|
|
break;
|
|
|
|
ieee80211_sta_process_chanswitch(sdata,
|
|
rx_status->mactime,
|
|
rx_status->device_timestamp,
|
|
&elems, false);
|
|
} else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
|
|
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
|
|
*/
|
|
ieee802_11_parse_elems(
|
|
mgmt->u.action.u.ext_chan_switch.variable,
|
|
ies_len, true, &elems, mgmt->bssid, NULL);
|
|
|
|
if (elems.parse_error)
|
|
break;
|
|
|
|
/* for the handling code pretend this was also an IE */
|
|
elems.ext_chansw_ie =
|
|
&mgmt->u.action.u.ext_chan_switch.data;
|
|
|
|
ieee80211_sta_process_chanswitch(sdata,
|
|
rx_status->mactime,
|
|
rx_status->device_timestamp,
|
|
&elems, false);
|
|
}
|
|
break;
|
|
}
|
|
sdata_unlock(sdata);
|
|
}
|
|
|
|
static void ieee80211_sta_timer(struct timer_list *t)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata =
|
|
from_timer(sdata, t, u.mgd.timer);
|
|
|
|
ieee80211_queue_work(&sdata->local->hw, &sdata->work);
|
|
}
|
|
|
|
static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
|
|
u8 *bssid, 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;
|
|
u16 prepare_tx_duration = 0;
|
|
|
|
sdata_assert_lock(sdata);
|
|
|
|
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->bss->bssid);
|
|
|
|
/*
|
|
* 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)
|
|
prepare_tx_duration =
|
|
jiffies_to_msecs(IEEE80211_AUTH_TIMEOUT_SAE);
|
|
|
|
drv_mgd_prepare_tx(local, sdata, prepare_tx_duration);
|
|
|
|
sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
|
|
auth_data->bss->bssid, 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->bss->bssid,
|
|
auth_data->bss->bssid, 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;
|
|
|
|
sdata_assert_lock(sdata);
|
|
|
|
assoc_data->tries++;
|
|
if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
|
|
sdata_info(sdata, "association with %pM timed out\n",
|
|
assoc_data->bss->bssid);
|
|
|
|
/*
|
|
* Most likely AP is not in the range so remove the
|
|
* bss struct for that AP.
|
|
*/
|
|
cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss);
|
|
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
sdata_info(sdata, "associate with %pM (try %d/%d)\n",
|
|
assoc_data->bss->bssid, assoc_data->tries,
|
|
IEEE80211_ASSOC_MAX_TRIES);
|
|
ieee80211_send_assoc(sdata);
|
|
|
|
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;
|
|
|
|
ieee80211_queue_work(&local->hw, &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;
|
|
|
|
sdata_lock(sdata);
|
|
|
|
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) {
|
|
/*
|
|
* ok ... we waited for assoc but userspace didn't,
|
|
* so let's just kill the auth data
|
|
*/
|
|
ieee80211_destroy_auth_data(sdata, false);
|
|
} else if (ieee80211_auth(sdata)) {
|
|
u8 bssid[ETH_ALEN];
|
|
struct ieee80211_event event = {
|
|
.type = MLME_EVENT,
|
|
.u.mlme.data = AUTH_EVENT,
|
|
.u.mlme.status = MLME_TIMEOUT,
|
|
};
|
|
|
|
memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
|
|
|
|
ieee80211_destroy_auth_data(sdata, false);
|
|
|
|
cfg80211_auth_timeout(sdata->dev, bssid);
|
|
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 && !ifmgd->have_beacon) ||
|
|
ieee80211_do_assoc(sdata)) {
|
|
struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
|
|
struct ieee80211_event event = {
|
|
.type = MLME_EVENT,
|
|
.u.mlme.data = ASSOC_EVENT,
|
|
.u.mlme.status = MLME_TIMEOUT,
|
|
};
|
|
|
|
ieee80211_destroy_assoc_data(sdata, false, false);
|
|
cfg80211_assoc_timeout(sdata->dev, bss);
|
|
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[ETH_ALEN];
|
|
int max_tries;
|
|
|
|
memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
|
|
|
|
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, bssid,
|
|
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, bssid,
|
|
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, bssid,
|
|
WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
|
|
}
|
|
}
|
|
|
|
sdata_unlock(sdata);
|
|
}
|
|
|
|
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);
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
|
|
if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
|
|
return;
|
|
|
|
if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
|
|
return;
|
|
|
|
sdata->u.mgd.connection_loss = false;
|
|
ieee80211_queue_work(&sdata->local->hw,
|
|
&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 (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
|
|
return;
|
|
|
|
sta = sta_info_get(sdata, ifmgd->bssid);
|
|
if (!sta)
|
|
return;
|
|
|
|
timeout = sta->status_stats.last_ack;
|
|
if (time_before(sta->status_stats.last_ack, sta->rx_stats.last_rx))
|
|
timeout = sta->rx_stats.last_rx;
|
|
timeout += IEEE80211_CONNECTION_IDLE_TIME;
|
|
|
|
if (time_is_before_jiffies(timeout)) {
|
|
mod_timer(&ifmgd->conn_mon_timer, round_jiffies_up(timeout));
|
|
return;
|
|
}
|
|
|
|
ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
|
|
}
|
|
|
|
static void ieee80211_sta_monitor_work(struct work_struct *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))
|
|
ieee80211_queue_work(&sdata->local->hw,
|
|
&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];
|
|
|
|
sdata_lock(sdata);
|
|
|
|
if (ifmgd->auth_data || ifmgd->assoc_data) {
|
|
const u8 *bssid = ifmgd->auth_data ?
|
|
ifmgd->auth_data->bss->bssid :
|
|
ifmgd->assoc_data->bss->bssid;
|
|
|
|
/*
|
|
* 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, bssid, bssid,
|
|
IEEE80211_STYPE_DEAUTH,
|
|
WLAN_REASON_DEAUTH_LEAVING,
|
|
false, frame_buf);
|
|
if (ifmgd->assoc_data)
|
|
ieee80211_destroy_assoc_data(sdata, false, true);
|
|
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, ifmgd->associated->bssid, ETH_ALEN);
|
|
ieee80211_mgd_deauth(sdata, &req);
|
|
}
|
|
|
|
sdata_unlock(sdata);
|
|
}
|
|
|
|
void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
|
|
sdata_lock(sdata);
|
|
if (!ifmgd->associated) {
|
|
sdata_unlock(sdata);
|
|
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,
|
|
ifmgd->associated->bssid,
|
|
WLAN_REASON_UNSPECIFIED,
|
|
true);
|
|
sdata_unlock(sdata);
|
|
return;
|
|
}
|
|
sdata_unlock(sdata);
|
|
}
|
|
#endif
|
|
|
|
/* interface setup */
|
|
void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd;
|
|
|
|
ifmgd = &sdata->u.mgd;
|
|
INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
|
|
INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
|
|
INIT_WORK(&ifmgd->beacon_connection_loss_work,
|
|
ieee80211_beacon_connection_loss_work);
|
|
INIT_WORK(&ifmgd->csa_connection_drop_work,
|
|
ieee80211_csa_connection_drop_work);
|
|
INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work);
|
|
INIT_DELAYED_WORK(&ifmgd->tdls_peer_del_work,
|
|
ieee80211_tdls_peer_del_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);
|
|
timer_setup(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, 0);
|
|
INIT_DELAYED_WORK(&ifmgd->tx_tspec_wk,
|
|
ieee80211_sta_handle_tspec_ac_params_wk);
|
|
|
|
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;
|
|
ifmgd->p2p_noa_index = -1;
|
|
|
|
if (sdata->local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS)
|
|
ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
|
|
else
|
|
ifmgd->req_smps = IEEE80211_SMPS_OFF;
|
|
|
|
/* Setup TDLS data */
|
|
spin_lock_init(&ifmgd->teardown_lock);
|
|
ifmgd->teardown_skb = NULL;
|
|
ifmgd->orig_teardown_skb = NULL;
|
|
}
|
|
|
|
/* 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 u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
|
|
struct cfg80211_bss *cbss)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
const u8 *ht_cap_ie, *vht_cap_ie;
|
|
const struct ieee80211_ht_cap *ht_cap;
|
|
const struct ieee80211_vht_cap *vht_cap;
|
|
u8 chains = 1;
|
|
|
|
if (ifmgd->flags & IEEE80211_STA_DISABLE_HT)
|
|
return chains;
|
|
|
|
ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
|
|
if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) {
|
|
ht_cap = (void *)(ht_cap_ie + 2);
|
|
chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
|
|
/*
|
|
* TODO: use "Tx Maximum Number Spatial Streams Supported" and
|
|
* "Tx Unequal Modulation Supported" fields.
|
|
*/
|
|
}
|
|
|
|
if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
|
|
return chains;
|
|
|
|
vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
|
|
if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) {
|
|
u8 nss;
|
|
u16 tx_mcs_map;
|
|
|
|
vht_cap = (void *)(vht_cap_ie + 2);
|
|
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);
|
|
}
|
|
|
|
return chains;
|
|
}
|
|
|
|
static bool
|
|
ieee80211_verify_sta_he_mcs_support(struct ieee80211_supported_band *sband,
|
|
const struct ieee80211_he_operation *he_op)
|
|
{
|
|
const struct ieee80211_sta_he_cap *sta_he_cap =
|
|
ieee80211_get_he_sta_cap(sband);
|
|
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);
|
|
|
|
/* 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
|
|
*/
|
|
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 int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
|
|
struct cfg80211_bss *cbss)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
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_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;
|
|
struct ieee80211_bss *bss = (void *)cbss->priv;
|
|
int ret;
|
|
u32 i;
|
|
bool have_80mhz;
|
|
|
|
sband = local->hw.wiphy->bands[cbss->channel->band];
|
|
|
|
ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ |
|
|
IEEE80211_STA_DISABLE_80P80MHZ |
|
|
IEEE80211_STA_DISABLE_160MHZ);
|
|
|
|
/* disable HT/VHT/HE if we don't support them */
|
|
if (!sband->ht_cap.ht_supported && !is_6ghz) {
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
|
|
}
|
|
|
|
if (!sband->vht_cap.vht_supported && is_5ghz) {
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
|
|
}
|
|
|
|
if (!ieee80211_get_he_sta_cap(sband))
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
|
|
|
|
rcu_read_lock();
|
|
|
|
if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && !is_6ghz) {
|
|
const u8 *ht_oper_ie, *ht_cap_ie;
|
|
|
|
ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION);
|
|
if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper))
|
|
ht_oper = (void *)(ht_oper_ie + 2);
|
|
|
|
ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
|
|
if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap))
|
|
ht_cap = (void *)(ht_cap_ie + 2);
|
|
|
|
if (!ht_cap) {
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
|
|
ht_oper = NULL;
|
|
}
|
|
}
|
|
|
|
if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && !is_6ghz) {
|
|
const u8 *vht_oper_ie, *vht_cap;
|
|
|
|
vht_oper_ie = ieee80211_bss_get_ie(cbss,
|
|
WLAN_EID_VHT_OPERATION);
|
|
if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper))
|
|
vht_oper = (void *)(vht_oper_ie + 2);
|
|
if (vht_oper && !ht_oper) {
|
|
vht_oper = NULL;
|
|
sdata_info(sdata,
|
|
"AP advertised VHT without HT, disabling HT/VHT/HE\n");
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
|
|
}
|
|
|
|
vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
|
|
if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) {
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
|
|
vht_oper = NULL;
|
|
}
|
|
}
|
|
|
|
if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE)) {
|
|
const struct cfg80211_bss_ies *ies;
|
|
const u8 *he_oper_ie;
|
|
|
|
ies = rcu_dereference(cbss->ies);
|
|
he_oper_ie = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION,
|
|
ies->data, ies->len);
|
|
if (he_oper_ie &&
|
|
he_oper_ie[1] == ieee80211_he_oper_size(&he_oper_ie[3]))
|
|
he_oper = (void *)(he_oper_ie + 3);
|
|
else
|
|
he_oper = NULL;
|
|
|
|
if (!ieee80211_verify_sta_he_mcs_support(sband, he_oper))
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
|
|
}
|
|
|
|
/* 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)
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
|
|
|
|
if (sband->band == NL80211_BAND_S1GHZ) {
|
|
const u8 *s1g_oper_ie;
|
|
|
|
s1g_oper_ie = ieee80211_bss_get_ie(cbss,
|
|
WLAN_EID_S1G_OPERATION);
|
|
if (s1g_oper_ie && s1g_oper_ie[1] >= sizeof(*s1g_oper))
|
|
s1g_oper = (void *)(s1g_oper_ie + 2);
|
|
else
|
|
sdata_info(sdata,
|
|
"AP missing S1G operation element?\n");
|
|
}
|
|
|
|
ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
|
|
cbss->channel,
|
|
bss->vht_cap_info,
|
|
ht_oper, vht_oper, he_oper,
|
|
s1g_oper,
|
|
&chandef, false);
|
|
|
|
sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
|
|
local->rx_chains);
|
|
|
|
rcu_read_unlock();
|
|
|
|
if (ifmgd->flags & IEEE80211_STA_DISABLE_HE && is_6ghz) {
|
|
sdata_info(sdata, "Rejecting non-HE 6/7 GHz connection");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* will change later if needed */
|
|
sdata->smps_mode = IEEE80211_SMPS_OFF;
|
|
|
|
mutex_lock(&local->mtx);
|
|
/*
|
|
* 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_vif_use_channel(sdata, &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) {
|
|
ifmgd->flags |= ieee80211_chandef_downgrade(&chandef);
|
|
ret = ieee80211_vif_use_channel(sdata, &chandef,
|
|
IEEE80211_CHANCTX_SHARED);
|
|
}
|
|
out:
|
|
mutex_unlock(&local->mtx);
|
|
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 int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
|
|
struct cfg80211_bss *cbss, 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_supported_band *sband;
|
|
bool have_sta = false;
|
|
int err;
|
|
|
|
sband = local->hw.wiphy->bands[cbss->channel->band];
|
|
|
|
if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
|
|
return -EINVAL;
|
|
|
|
/* If a reconfig is happening, bail out */
|
|
if (local->in_reconfig)
|
|
return -EBUSY;
|
|
|
|
if (assoc) {
|
|
rcu_read_lock();
|
|
have_sta = sta_info_get(sdata, cbss->bssid);
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
if (!have_sta) {
|
|
new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
|
|
if (!new_sta)
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/*
|
|
* 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) {
|
|
u32 rates = 0, basic_rates = 0;
|
|
bool have_higher_than_11mbit;
|
|
int min_rate = INT_MAX, min_rate_index = -1;
|
|
const struct cfg80211_bss_ies *ies;
|
|
int shift = ieee80211_vif_get_shift(&sdata->vif);
|
|
|
|
/* TODO: S1G Basic Rate Set is expressed elsewhere */
|
|
if (cbss->channel->band == NL80211_BAND_S1GHZ) {
|
|
ieee80211_s1g_sta_rate_init(new_sta);
|
|
goto skip_rates;
|
|
}
|
|
|
|
ieee80211_get_rates(sband, bss->supp_rates,
|
|
bss->supp_rates_len,
|
|
&rates, &basic_rates,
|
|
&have_higher_than_11mbit,
|
|
&min_rate, &min_rate_index,
|
|
shift);
|
|
|
|
/*
|
|
* 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) {
|
|
sdata_info(sdata,
|
|
"No legacy rates in association response\n");
|
|
|
|
sta_info_free(local, new_sta);
|
|
return -EINVAL;
|
|
} else if (!basic_rates) {
|
|
sdata_info(sdata,
|
|
"No basic rates, using min rate instead\n");
|
|
basic_rates = BIT(min_rate_index);
|
|
}
|
|
|
|
if (rates)
|
|
new_sta->sta.supp_rates[cbss->channel->band] = rates;
|
|
else
|
|
sdata_info(sdata,
|
|
"No rates found, keeping mandatory only\n");
|
|
|
|
sdata->vif.bss_conf.basic_rates = basic_rates;
|
|
|
|
/* cf. IEEE 802.11 9.2.12 */
|
|
if (cbss->channel->band == NL80211_BAND_2GHZ &&
|
|
have_higher_than_11mbit)
|
|
sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
|
|
else
|
|
sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
|
|
|
|
skip_rates:
|
|
memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
|
|
|
|
/* set timing information */
|
|
sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
|
|
rcu_read_lock();
|
|
ies = rcu_dereference(cbss->beacon_ies);
|
|
if (ies) {
|
|
sdata->vif.bss_conf.sync_tsf = ies->tsf;
|
|
sdata->vif.bss_conf.sync_device_ts =
|
|
bss->device_ts_beacon;
|
|
|
|
ieee80211_get_dtim(ies,
|
|
&sdata->vif.bss_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 */
|
|
sdata->vif.bss_conf.sync_tsf = ies->tsf;
|
|
sdata->vif.bss_conf.sync_device_ts =
|
|
bss->device_ts_presp;
|
|
sdata->vif.bss_conf.sync_dtim_count = 0;
|
|
} else {
|
|
sdata->vif.bss_conf.sync_tsf = 0;
|
|
sdata->vif.bss_conf.sync_device_ts = 0;
|
|
sdata->vif.bss_conf.sync_dtim_count = 0;
|
|
}
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
if (new_sta || override) {
|
|
err = ieee80211_prep_channel(sdata, cbss);
|
|
if (err) {
|
|
if (new_sta)
|
|
sta_info_free(local, new_sta);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
if (new_sta) {
|
|
/*
|
|
* tell driver about BSSID, basic rates and timing
|
|
* this was set up above, before setting the channel
|
|
*/
|
|
ieee80211_bss_info_change_notify(sdata,
|
|
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);
|
|
return err;
|
|
}
|
|
} else
|
|
WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid));
|
|
|
|
/* Cancel scan to ensure that nothing interferes with connection */
|
|
if (local->scanning)
|
|
ieee80211_scan_cancel(local);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* 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;
|
|
u16 auth_alg;
|
|
int err;
|
|
bool cont_auth;
|
|
|
|
/* 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;
|
|
|
|
auth_data = kzalloc(sizeof(*auth_data) + req->auth_data_len +
|
|
req->ie_len, GFP_KERNEL);
|
|
if (!auth_data)
|
|
return -ENOMEM;
|
|
|
|
auth_data->bss = req->bss;
|
|
|
|
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;
|
|
|
|
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, req->bss->bssid);
|
|
|
|
if (ifmgd->associated) {
|
|
u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
|
|
|
|
sdata_info(sdata,
|
|
"disconnect from AP %pM for new auth to %pM\n",
|
|
ifmgd->associated->bssid, req->bss->bssid);
|
|
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);
|
|
}
|
|
|
|
sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
|
|
|
|
err = ieee80211_prep_connection(sdata, req->bss, cont_auth, false);
|
|
if (err)
|
|
goto err_clear;
|
|
|
|
err = ieee80211_auth(sdata);
|
|
if (err) {
|
|
sta_info_destroy_addr(sdata, req->bss->bssid);
|
|
goto err_clear;
|
|
}
|
|
|
|
/* hold our own reference */
|
|
cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
|
|
return 0;
|
|
|
|
err_clear:
|
|
eth_zero_addr(ifmgd->bssid);
|
|
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
|
|
ifmgd->auth_data = NULL;
|
|
mutex_lock(&sdata->local->mtx);
|
|
ieee80211_vif_release_channel(sdata);
|
|
mutex_unlock(&sdata->local->mtx);
|
|
kfree(auth_data);
|
|
return err;
|
|
}
|
|
|
|
int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
|
|
struct cfg80211_assoc_request *req)
|
|
{
|
|
bool is_6ghz = req->bss->channel->band == NL80211_BAND_6GHZ;
|
|
bool is_5ghz = req->bss->channel->band == NL80211_BAND_5GHZ;
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
struct ieee80211_bss *bss = (void *)req->bss->priv;
|
|
struct ieee80211_mgd_assoc_data *assoc_data;
|
|
const struct cfg80211_bss_ies *beacon_ies;
|
|
struct ieee80211_supported_band *sband;
|
|
struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
|
|
const u8 *ssidie, *ht_ie, *vht_ie;
|
|
int i, err;
|
|
bool override = false;
|
|
|
|
assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL);
|
|
if (!assoc_data)
|
|
return -ENOMEM;
|
|
|
|
rcu_read_lock();
|
|
ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
|
|
if (!ssidie || ssidie[1] > sizeof(assoc_data->ssid)) {
|
|
rcu_read_unlock();
|
|
kfree(assoc_data);
|
|
return -EINVAL;
|
|
}
|
|
memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]);
|
|
assoc_data->ssid_len = ssidie[1];
|
|
memcpy(bss_conf->ssid, assoc_data->ssid, assoc_data->ssid_len);
|
|
bss_conf->ssid_len = assoc_data->ssid_len;
|
|
rcu_read_unlock();
|
|
|
|
if (ifmgd->associated) {
|
|
u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
|
|
|
|
sdata_info(sdata,
|
|
"disconnect from AP %pM for new assoc to %pM\n",
|
|
ifmgd->associated->bssid, req->bss->bssid);
|
|
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->bssid, req->bss->bssid);
|
|
ieee80211_destroy_auth_data(sdata, match);
|
|
}
|
|
|
|
/* prepare assoc data */
|
|
|
|
ifmgd->beacon_crc_valid = false;
|
|
|
|
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) {
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
|
|
netdev_info(sdata->dev,
|
|
"disabling HT/VHT/HE due to WEP/TKIP use\n");
|
|
}
|
|
}
|
|
|
|
sband = local->hw.wiphy->bands[req->bss->channel->band];
|
|
|
|
/* also disable HT/VHT/HE if the AP doesn't use WMM */
|
|
if (!bss->wmm_used) {
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
|
|
netdev_info(sdata->dev,
|
|
"disabling HT/VHT/HE as WMM/QoS is not supported by the AP\n");
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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);
|
|
|
|
assoc_data->bss = req->bss;
|
|
|
|
if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) {
|
|
if (ifmgd->powersave)
|
|
sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
|
|
else
|
|
sdata->smps_mode = IEEE80211_SMPS_OFF;
|
|
} else
|
|
sdata->smps_mode = ifmgd->req_smps;
|
|
|
|
assoc_data->capability = req->bss->capability;
|
|
assoc_data->supp_rates = bss->supp_rates;
|
|
assoc_data->supp_rates_len = bss->supp_rates_len;
|
|
|
|
rcu_read_lock();
|
|
ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION);
|
|
if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation))
|
|
assoc_data->ap_ht_param =
|
|
((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param;
|
|
else if (!is_6ghz)
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
|
|
vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY);
|
|
if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap))
|
|
memcpy(&assoc_data->ap_vht_cap, vht_ie + 2,
|
|
sizeof(struct ieee80211_vht_cap));
|
|
else if (is_5ghz)
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_VHT |
|
|
IEEE80211_STA_DISABLE_HE;
|
|
rcu_read_unlock();
|
|
|
|
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_bssid, 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;
|
|
sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto,
|
|
sdata->vif.type);
|
|
|
|
/* kick off associate process */
|
|
|
|
ifmgd->assoc_data = assoc_data;
|
|
ifmgd->dtim_period = 0;
|
|
ifmgd->have_beacon = false;
|
|
|
|
/* override HT/VHT configuration only if the AP and we support it */
|
|
if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
|
|
struct ieee80211_sta_ht_cap sta_ht_cap;
|
|
|
|
if (req->flags & ASSOC_REQ_DISABLE_HT)
|
|
override = true;
|
|
|
|
memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
|
|
ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
|
|
|
|
/* check for 40 MHz disable override */
|
|
if (!(ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ) &&
|
|
sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
|
|
!(sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
|
|
override = true;
|
|
|
|
if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
|
|
req->flags & ASSOC_REQ_DISABLE_VHT)
|
|
override = true;
|
|
}
|
|
|
|
if (req->flags & ASSOC_REQ_DISABLE_HT) {
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
|
|
}
|
|
|
|
if (req->flags & ASSOC_REQ_DISABLE_VHT)
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
|
|
|
|
if (req->flags & ASSOC_REQ_DISABLE_HE)
|
|
ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
|
|
|
|
err = ieee80211_prep_connection(sdata, req->bss, true, override);
|
|
if (err)
|
|
goto err_clear;
|
|
|
|
rcu_read_lock();
|
|
beacon_ies = rcu_dereference(req->bss->beacon_ies);
|
|
|
|
if (ieee80211_hw_check(&sdata->local->hw, NEED_DTIM_BEFORE_ASSOC) &&
|
|
!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",
|
|
ifmgd->bssid);
|
|
assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
|
|
assoc_data->timeout_started = true;
|
|
assoc_data->need_beacon = true;
|
|
} else if (beacon_ies) {
|
|
const struct element *elem;
|
|
u8 dtim_count = 0;
|
|
|
|
ieee80211_get_dtim(beacon_ies, &dtim_count,
|
|
&ifmgd->dtim_period);
|
|
|
|
ifmgd->have_beacon = true;
|
|
assoc_data->timeout = jiffies;
|
|
assoc_data->timeout_started = true;
|
|
|
|
if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
|
|
sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf;
|
|
sdata->vif.bss_conf.sync_device_ts =
|
|
bss->device_ts_beacon;
|
|
sdata->vif.bss_conf.sync_dtim_count = dtim_count;
|
|
}
|
|
|
|
elem = cfg80211_find_ext_elem(WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION,
|
|
beacon_ies->data, beacon_ies->len);
|
|
if (elem && elem->datalen >= 3)
|
|
sdata->vif.bss_conf.profile_periodicity = elem->data[2];
|
|
|
|
elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY,
|
|
beacon_ies->data, beacon_ies->len);
|
|
if (elem && elem->datalen >= 11 &&
|
|
(elem->data[10] & WLAN_EXT_CAPA11_EMA_SUPPORT))
|
|
sdata->vif.bss_conf.ema_ap = true;
|
|
} else {
|
|
assoc_data->timeout = jiffies;
|
|
assoc_data->timeout_started = true;
|
|
}
|
|
rcu_read_unlock();
|
|
|
|
run_again(sdata, assoc_data->timeout);
|
|
|
|
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 with AP with corrupt %s\n",
|
|
corrupt_type);
|
|
}
|
|
|
|
return 0;
|
|
err_clear:
|
|
eth_zero_addr(ifmgd->bssid);
|
|
ieee80211_bss_info_change_notify(sdata, 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;
|
|
|
|
if (ifmgd->auth_data &&
|
|
ether_addr_equal(ifmgd->auth_data->bss->bssid, 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));
|
|
|
|
drv_mgd_prepare_tx(sdata->local, sdata, 0);
|
|
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);
|
|
|
|
return 0;
|
|
}
|
|
|
|
if (ifmgd->assoc_data &&
|
|
ether_addr_equal(ifmgd->assoc_data->bss->bssid, 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));
|
|
|
|
drv_mgd_prepare_tx(sdata->local, sdata, 0);
|
|
ieee80211_send_deauth_disassoc(sdata, req->bssid, req->bssid,
|
|
IEEE80211_STYPE_DEAUTH,
|
|
req->reason_code, tx,
|
|
frame_buf);
|
|
ieee80211_destroy_assoc_data(sdata, false, true);
|
|
ieee80211_report_disconnect(sdata, frame_buf,
|
|
sizeof(frame_buf), true,
|
|
req->reason_code, false);
|
|
return 0;
|
|
}
|
|
|
|
if (ifmgd->associated &&
|
|
ether_addr_equal(ifmgd->associated->bssid, 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);
|
|
return 0;
|
|
}
|
|
|
|
return -ENOTCONN;
|
|
}
|
|
|
|
int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
|
|
struct cfg80211_disassoc_request *req)
|
|
{
|
|
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
|
u8 bssid[ETH_ALEN];
|
|
u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
|
|
|
|
/*
|
|
* cfg80211 should catch this ... but it's racy since
|
|
* we can receive a disassoc frame, process it, hand it
|
|
* to cfg80211 while that's in a locked section already
|
|
* trying to tell us that the user wants to disconnect.
|
|
*/
|
|
if (ifmgd->associated != req->bss)
|
|
return -ENOLINK;
|
|
|
|
sdata_info(sdata,
|
|
"disassociating from %pM by local choice (Reason: %u=%s)\n",
|
|
req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code));
|
|
|
|
memcpy(bssid, req->bss->bssid, ETH_ALEN);
|
|
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(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.
|
|
*/
|
|
cancel_work_sync(&ifmgd->monitor_work);
|
|
cancel_work_sync(&ifmgd->beacon_connection_loss_work);
|
|
cancel_work_sync(&ifmgd->request_smps_work);
|
|
cancel_work_sync(&ifmgd->csa_connection_drop_work);
|
|
cancel_work_sync(&ifmgd->chswitch_work);
|
|
cancel_delayed_work_sync(&ifmgd->tdls_peer_del_work);
|
|
|
|
sdata_lock(sdata);
|
|
if (ifmgd->assoc_data) {
|
|
struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
|
|
ieee80211_destroy_assoc_data(sdata, false, false);
|
|
cfg80211_assoc_timeout(sdata->dev, bss);
|
|
}
|
|
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);
|
|
sdata_unlock(sdata);
|
|
}
|
|
|
|
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);
|