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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /net/mac80211/mlme.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'net/mac80211/mlme.c')
-rw-r--r--net/mac80211/mlme.c7444
1 files changed, 7444 insertions, 0 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
new file mode 100644
index 000000000..c07645c99
--- /dev/null
+++ b/net/mac80211/mlme.c
@@ -0,0 +1,7444 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * BSS client mode implementation
+ * Copyright 2003-2008, Jouni Malinen <j@w1.fi>
+ * Copyright 2004, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
+ * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
+ * Copyright 2013-2014 Intel Mobile Communications GmbH
+ * Copyright (C) 2015 - 2017 Intel Deutschland GmbH
+ * Copyright (C) 2018 - 2022 Intel Corporation
+ */
+
+#include <linux/delay.h>
+#include <linux/fips.h>
+#include <linux/if_ether.h>
+#include <linux/skbuff.h>
+#include <linux/if_arp.h>
+#include <linux/etherdevice.h>
+#include <linux/moduleparam.h>
+#include <linux/rtnetlink.h>
+#include <linux/crc32.h>
+#include <linux/slab.h>
+#include <linux/export.h>
+#include <net/mac80211.h>
+#include <asm/unaligned.h>
+
+#include "ieee80211_i.h"
+#include "driver-ops.h"
+#include "rate.h"
+#include "led.h"
+#include "fils_aead.h"
+
+#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
+#define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2)
+#define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10)
+#define IEEE80211_AUTH_TIMEOUT_SAE (HZ * 2)
+#define IEEE80211_AUTH_MAX_TRIES 3
+#define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
+#define IEEE80211_AUTH_WAIT_SAE_RETRY (HZ * 2)
+#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
+#define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2)
+#define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10)
+#define IEEE80211_ASSOC_MAX_TRIES 3
+
+static int max_nullfunc_tries = 2;
+module_param(max_nullfunc_tries, int, 0644);
+MODULE_PARM_DESC(max_nullfunc_tries,
+ "Maximum nullfunc tx tries before disconnecting (reason 4).");
+
+static int max_probe_tries = 5;
+module_param(max_probe_tries, int, 0644);
+MODULE_PARM_DESC(max_probe_tries,
+ "Maximum probe tries before disconnecting (reason 4).");
+
+/*
+ * Beacon loss timeout is calculated as N frames times the
+ * advertised beacon interval. This may need to be somewhat
+ * higher than what hardware might detect to account for
+ * delays in the host processing frames. But since we also
+ * probe on beacon miss before declaring the connection lost
+ * default to what we want.
+ */
+static int beacon_loss_count = 7;
+module_param(beacon_loss_count, int, 0644);
+MODULE_PARM_DESC(beacon_loss_count,
+ "Number of beacon intervals before we decide beacon was lost.");
+
+/*
+ * Time the connection can be idle before we probe
+ * it to see if we can still talk to the AP.
+ */
+#define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
+/*
+ * Time we wait for a probe response after sending
+ * a probe request because of beacon loss or for
+ * checking the connection still works.
+ */
+static int probe_wait_ms = 500;
+module_param(probe_wait_ms, int, 0644);
+MODULE_PARM_DESC(probe_wait_ms,
+ "Maximum time(ms) to wait for probe response"
+ " before disconnecting (reason 4).");
+
+/*
+ * How many Beacon frames need to have been used in average signal strength
+ * before starting to indicate signal change events.
+ */
+#define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
+
+/*
+ * We can have multiple work items (and connection probing)
+ * scheduling this timer, but we need to take care to only
+ * reschedule it when it should fire _earlier_ than it was
+ * asked for before, or if it's not pending right now. This
+ * function ensures that. Note that it then is required to
+ * run this function for all timeouts after the first one
+ * has happened -- the work that runs from this timer will
+ * do that.
+ */
+static void run_again(struct ieee80211_sub_if_data *sdata,
+ unsigned long timeout)
+{
+ sdata_assert_lock(sdata);
+
+ if (!timer_pending(&sdata->u.mgd.timer) ||
+ time_before(timeout, sdata->u.mgd.timer.expires))
+ mod_timer(&sdata->u.mgd.timer, timeout);
+}
+
+void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
+{
+ if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
+ return;
+
+ if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
+ return;
+
+ mod_timer(&sdata->u.mgd.bcn_mon_timer,
+ round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
+}
+
+void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+
+ if (unlikely(!ifmgd->associated))
+ return;
+
+ if (ifmgd->probe_send_count)
+ ifmgd->probe_send_count = 0;
+
+ if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
+ return;
+
+ mod_timer(&ifmgd->conn_mon_timer,
+ round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
+}
+
+static int ecw2cw(int ecw)
+{
+ return (1 << ecw) - 1;
+}
+
+static ieee80211_conn_flags_t
+ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_link_data *link,
+ ieee80211_conn_flags_t conn_flags,
+ struct ieee80211_supported_band *sband,
+ struct ieee80211_channel *channel,
+ u32 vht_cap_info,
+ const struct ieee80211_ht_operation *ht_oper,
+ const struct ieee80211_vht_operation *vht_oper,
+ const struct ieee80211_he_operation *he_oper,
+ const struct ieee80211_eht_operation *eht_oper,
+ const struct ieee80211_s1g_oper_ie *s1g_oper,
+ struct cfg80211_chan_def *chandef, bool tracking)
+{
+ struct cfg80211_chan_def vht_chandef;
+ struct ieee80211_sta_ht_cap sta_ht_cap;
+ ieee80211_conn_flags_t ret;
+ u32 ht_cfreq;
+
+ memset(chandef, 0, sizeof(struct cfg80211_chan_def));
+ chandef->chan = channel;
+ chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
+ chandef->center_freq1 = channel->center_freq;
+ chandef->freq1_offset = channel->freq_offset;
+
+ if (channel->band == NL80211_BAND_6GHZ) {
+ if (!ieee80211_chandef_he_6ghz_oper(sdata, he_oper, eht_oper,
+ chandef)) {
+ mlme_dbg(sdata,
+ "bad 6 GHz operation, disabling HT/VHT/HE/EHT\n");
+ ret = IEEE80211_CONN_DISABLE_HT |
+ IEEE80211_CONN_DISABLE_VHT |
+ IEEE80211_CONN_DISABLE_HE |
+ IEEE80211_CONN_DISABLE_EHT;
+ } else {
+ ret = 0;
+ }
+ vht_chandef = *chandef;
+ goto out;
+ } else if (sband->band == NL80211_BAND_S1GHZ) {
+ if (!ieee80211_chandef_s1g_oper(s1g_oper, chandef)) {
+ sdata_info(sdata,
+ "Missing S1G Operation Element? Trying operating == primary\n");
+ chandef->width = ieee80211_s1g_channel_width(channel);
+ }
+
+ ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_40MHZ |
+ IEEE80211_CONN_DISABLE_VHT |
+ IEEE80211_CONN_DISABLE_80P80MHZ |
+ IEEE80211_CONN_DISABLE_160MHZ;
+ goto out;
+ }
+
+ memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
+ ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
+
+ if (!ht_oper || !sta_ht_cap.ht_supported) {
+ mlme_dbg(sdata, "HT operation missing / HT not supported\n");
+ ret = IEEE80211_CONN_DISABLE_HT |
+ IEEE80211_CONN_DISABLE_VHT |
+ IEEE80211_CONN_DISABLE_HE |
+ IEEE80211_CONN_DISABLE_EHT;
+ goto out;
+ }
+
+ chandef->width = NL80211_CHAN_WIDTH_20;
+
+ ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
+ channel->band);
+ /* check that channel matches the right operating channel */
+ if (!tracking && channel->center_freq != ht_cfreq) {
+ /*
+ * It's possible that some APs are confused here;
+ * Netgear WNDR3700 sometimes reports 4 higher than
+ * the actual channel in association responses, but
+ * since we look at probe response/beacon data here
+ * it should be OK.
+ */
+ sdata_info(sdata,
+ "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
+ channel->center_freq, ht_cfreq,
+ ht_oper->primary_chan, channel->band);
+ ret = IEEE80211_CONN_DISABLE_HT |
+ IEEE80211_CONN_DISABLE_VHT |
+ IEEE80211_CONN_DISABLE_HE |
+ IEEE80211_CONN_DISABLE_EHT;
+ goto out;
+ }
+
+ /* check 40 MHz support, if we have it */
+ if (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
+ ieee80211_chandef_ht_oper(ht_oper, chandef);
+ } else {
+ mlme_dbg(sdata, "40 MHz not supported\n");
+ /* 40 MHz (and 80 MHz) must be supported for VHT */
+ ret = IEEE80211_CONN_DISABLE_VHT;
+ /* also mark 40 MHz disabled */
+ ret |= IEEE80211_CONN_DISABLE_40MHZ;
+ goto out;
+ }
+
+ if (!vht_oper || !sband->vht_cap.vht_supported) {
+ mlme_dbg(sdata, "VHT operation missing / VHT not supported\n");
+ ret = IEEE80211_CONN_DISABLE_VHT;
+ goto out;
+ }
+
+ vht_chandef = *chandef;
+ if (!(conn_flags & IEEE80211_CONN_DISABLE_HE) &&
+ he_oper &&
+ (le32_to_cpu(he_oper->he_oper_params) &
+ IEEE80211_HE_OPERATION_VHT_OPER_INFO)) {
+ struct ieee80211_vht_operation he_oper_vht_cap;
+
+ /*
+ * Set only first 3 bytes (other 2 aren't used in
+ * ieee80211_chandef_vht_oper() anyway)
+ */
+ memcpy(&he_oper_vht_cap, he_oper->optional, 3);
+ he_oper_vht_cap.basic_mcs_set = cpu_to_le16(0);
+
+ if (!ieee80211_chandef_vht_oper(&sdata->local->hw, vht_cap_info,
+ &he_oper_vht_cap, ht_oper,
+ &vht_chandef)) {
+ if (!(conn_flags & IEEE80211_CONN_DISABLE_HE))
+ sdata_info(sdata,
+ "HE AP VHT information is invalid, disabling HE\n");
+ ret = IEEE80211_CONN_DISABLE_HE | IEEE80211_CONN_DISABLE_EHT;
+ goto out;
+ }
+ } else if (!ieee80211_chandef_vht_oper(&sdata->local->hw,
+ vht_cap_info,
+ vht_oper, ht_oper,
+ &vht_chandef)) {
+ if (!(conn_flags & IEEE80211_CONN_DISABLE_VHT))
+ sdata_info(sdata,
+ "AP VHT information is invalid, disabling VHT\n");
+ ret = IEEE80211_CONN_DISABLE_VHT;
+ goto out;
+ }
+
+ if (!cfg80211_chandef_valid(&vht_chandef)) {
+ if (!(conn_flags & IEEE80211_CONN_DISABLE_VHT))
+ sdata_info(sdata,
+ "AP VHT information is invalid, disabling VHT\n");
+ ret = IEEE80211_CONN_DISABLE_VHT;
+ goto out;
+ }
+
+ if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
+ ret = 0;
+ goto out;
+ }
+
+ if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
+ if (!(conn_flags & IEEE80211_CONN_DISABLE_VHT))
+ sdata_info(sdata,
+ "AP VHT information doesn't match HT, disabling VHT\n");
+ ret = IEEE80211_CONN_DISABLE_VHT;
+ goto out;
+ }
+
+ *chandef = vht_chandef;
+
+ /*
+ * handle the case that the EHT operation indicates that it holds EHT
+ * operation information (in case that the channel width differs from
+ * the channel width reported in HT/VHT/HE).
+ */
+ if (eht_oper && (eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT)) {
+ struct cfg80211_chan_def eht_chandef = *chandef;
+
+ ieee80211_chandef_eht_oper(eht_oper,
+ eht_chandef.width ==
+ NL80211_CHAN_WIDTH_160,
+ false, &eht_chandef);
+
+ if (!cfg80211_chandef_valid(&eht_chandef)) {
+ if (!(conn_flags & IEEE80211_CONN_DISABLE_EHT))
+ sdata_info(sdata,
+ "AP EHT information is invalid, disabling EHT\n");
+ ret = IEEE80211_CONN_DISABLE_EHT;
+ goto out;
+ }
+
+ if (!cfg80211_chandef_compatible(chandef, &eht_chandef)) {
+ if (!(conn_flags & IEEE80211_CONN_DISABLE_EHT))
+ sdata_info(sdata,
+ "AP EHT information is incompatible, disabling EHT\n");
+ ret = IEEE80211_CONN_DISABLE_EHT;
+ goto out;
+ }
+
+ *chandef = eht_chandef;
+ }
+
+ ret = 0;
+
+out:
+ /*
+ * When tracking the current AP, don't do any further checks if the
+ * new chandef is identical to the one we're currently using for the
+ * connection. This keeps us from playing ping-pong with regulatory,
+ * without it the following can happen (for example):
+ * - connect to an AP with 80 MHz, world regdom allows 80 MHz
+ * - AP advertises regdom US
+ * - CRDA loads regdom US with 80 MHz prohibited (old database)
+ * - the code below detects an unsupported channel, downgrades, and
+ * we disconnect from the AP in the caller
+ * - disconnect causes CRDA to reload world regdomain and the game
+ * starts anew.
+ * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881)
+ *
+ * It seems possible that there are still scenarios with CSA or real
+ * bandwidth changes where a this could happen, but those cases are
+ * less common and wouldn't completely prevent using the AP.
+ */
+ if (tracking &&
+ cfg80211_chandef_identical(chandef, &link->conf->chandef))
+ return ret;
+
+ /* don't print the message below for VHT mismatch if VHT is disabled */
+ if (ret & IEEE80211_CONN_DISABLE_VHT)
+ vht_chandef = *chandef;
+
+ /*
+ * Ignore the DISABLED flag when we're already connected and only
+ * tracking the APs beacon for bandwidth changes - otherwise we
+ * might get disconnected here if we connect to an AP, update our
+ * regulatory information based on the AP's country IE and the
+ * information we have is wrong/outdated and disables the channel
+ * that we're actually using for the connection to the AP.
+ */
+ while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
+ tracking ? 0 :
+ IEEE80211_CHAN_DISABLED)) {
+ if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
+ ret = IEEE80211_CONN_DISABLE_HT |
+ IEEE80211_CONN_DISABLE_VHT |
+ IEEE80211_CONN_DISABLE_HE |
+ IEEE80211_CONN_DISABLE_EHT;
+ break;
+ }
+
+ ret |= ieee80211_chandef_downgrade(chandef);
+ }
+
+ if (!he_oper || !cfg80211_chandef_usable(sdata->wdev.wiphy, chandef,
+ IEEE80211_CHAN_NO_HE))
+ ret |= IEEE80211_CONN_DISABLE_HE | IEEE80211_CONN_DISABLE_EHT;
+
+ if (!eht_oper || !cfg80211_chandef_usable(sdata->wdev.wiphy, chandef,
+ IEEE80211_CHAN_NO_EHT))
+ ret |= IEEE80211_CONN_DISABLE_EHT;
+
+ if (chandef->width != vht_chandef.width && !tracking)
+ sdata_info(sdata,
+ "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
+
+ WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
+ return ret;
+}
+
+static int ieee80211_config_bw(struct ieee80211_link_data *link,
+ const struct ieee80211_ht_cap *ht_cap,
+ const struct ieee80211_vht_cap *vht_cap,
+ const struct ieee80211_ht_operation *ht_oper,
+ const struct ieee80211_vht_operation *vht_oper,
+ const struct ieee80211_he_operation *he_oper,
+ const struct ieee80211_eht_operation *eht_oper,
+ const struct ieee80211_s1g_oper_ie *s1g_oper,
+ const u8 *bssid, u32 *changed)
+{
+ struct ieee80211_sub_if_data *sdata = link->sdata;
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_channel *chan = link->conf->chandef.chan;
+ struct ieee80211_supported_band *sband =
+ local->hw.wiphy->bands[chan->band];
+ struct cfg80211_chan_def chandef;
+ u16 ht_opmode;
+ ieee80211_conn_flags_t flags;
+ u32 vht_cap_info = 0;
+ int ret;
+
+ /* if HT was/is disabled, don't track any bandwidth changes */
+ if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HT || !ht_oper)
+ return 0;
+
+ /* don't check VHT if we associated as non-VHT station */
+ if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_VHT)
+ vht_oper = NULL;
+
+ /* don't check HE if we associated as non-HE station */
+ if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HE ||
+ !ieee80211_get_he_iftype_cap(sband,
+ ieee80211_vif_type_p2p(&sdata->vif))) {
+ he_oper = NULL;
+ eht_oper = NULL;
+ }
+
+ /* don't check EHT if we associated as non-EHT station */
+ if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_EHT ||
+ !ieee80211_get_eht_iftype_cap(sband,
+ ieee80211_vif_type_p2p(&sdata->vif)))
+ eht_oper = NULL;
+
+ /*
+ * if bss configuration changed store the new one -
+ * this may be applicable even if channel is identical
+ */
+ ht_opmode = le16_to_cpu(ht_oper->operation_mode);
+ if (link->conf->ht_operation_mode != ht_opmode) {
+ *changed |= BSS_CHANGED_HT;
+ link->conf->ht_operation_mode = ht_opmode;
+ }
+
+ if (vht_cap)
+ vht_cap_info = le32_to_cpu(vht_cap->vht_cap_info);
+
+ /* calculate new channel (type) based on HT/VHT/HE operation IEs */
+ flags = ieee80211_determine_chantype(sdata, link,
+ link->u.mgd.conn_flags,
+ sband, chan, vht_cap_info,
+ ht_oper, vht_oper,
+ he_oper, eht_oper,
+ s1g_oper, &chandef, true);
+
+ /*
+ * Downgrade the new channel if we associated with restricted
+ * capabilities. For example, if we associated as a 20 MHz STA
+ * to a 40 MHz AP (due to regulatory, capabilities or config
+ * reasons) then switching to a 40 MHz channel now won't do us
+ * any good -- we couldn't use it with the AP.
+ */
+ if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_80P80MHZ &&
+ chandef.width == NL80211_CHAN_WIDTH_80P80)
+ flags |= ieee80211_chandef_downgrade(&chandef);
+ if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_160MHZ &&
+ chandef.width == NL80211_CHAN_WIDTH_160)
+ flags |= ieee80211_chandef_downgrade(&chandef);
+ if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_40MHZ &&
+ chandef.width > NL80211_CHAN_WIDTH_20)
+ flags |= ieee80211_chandef_downgrade(&chandef);
+
+ if (cfg80211_chandef_identical(&chandef, &link->conf->chandef))
+ return 0;
+
+ link_info(link,
+ "AP %pM changed bandwidth, new config is %d.%03d MHz, width %d (%d.%03d/%d MHz)\n",
+ link->u.mgd.bssid, chandef.chan->center_freq,
+ chandef.chan->freq_offset, chandef.width,
+ chandef.center_freq1, chandef.freq1_offset,
+ chandef.center_freq2);
+
+ if (flags != (link->u.mgd.conn_flags &
+ (IEEE80211_CONN_DISABLE_HT |
+ IEEE80211_CONN_DISABLE_VHT |
+ IEEE80211_CONN_DISABLE_HE |
+ IEEE80211_CONN_DISABLE_EHT |
+ IEEE80211_CONN_DISABLE_40MHZ |
+ IEEE80211_CONN_DISABLE_80P80MHZ |
+ IEEE80211_CONN_DISABLE_160MHZ |
+ IEEE80211_CONN_DISABLE_320MHZ)) ||
+ !cfg80211_chandef_valid(&chandef)) {
+ sdata_info(sdata,
+ "AP %pM changed caps/bw in a way we can't support (0x%x/0x%x) - disconnect\n",
+ link->u.mgd.bssid, flags, ifmgd->flags);
+ return -EINVAL;
+ }
+
+ ret = ieee80211_link_change_bandwidth(link, &chandef, changed);
+
+ if (ret) {
+ sdata_info(sdata,
+ "AP %pM changed bandwidth to incompatible one - disconnect\n",
+ link->u.mgd.bssid);
+ return ret;
+ }
+
+ return 0;
+}
+
+/* frame sending functions */
+
+static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb, u8 ap_ht_param,
+ struct ieee80211_supported_band *sband,
+ struct ieee80211_channel *channel,
+ enum ieee80211_smps_mode smps,
+ ieee80211_conn_flags_t conn_flags)
+{
+ u8 *pos;
+ u32 flags = channel->flags;
+ u16 cap;
+ struct ieee80211_sta_ht_cap ht_cap;
+
+ BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
+
+ memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
+ ieee80211_apply_htcap_overrides(sdata, &ht_cap);
+
+ /* determine capability flags */
+ cap = ht_cap.cap;
+
+ switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
+ case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
+ if (flags & IEEE80211_CHAN_NO_HT40PLUS) {
+ cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
+ cap &= ~IEEE80211_HT_CAP_SGI_40;
+ }
+ break;
+ case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
+ if (flags & IEEE80211_CHAN_NO_HT40MINUS) {
+ cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
+ cap &= ~IEEE80211_HT_CAP_SGI_40;
+ }
+ break;
+ }
+
+ /*
+ * If 40 MHz was disabled associate as though we weren't
+ * capable of 40 MHz -- some broken APs will never fall
+ * back to trying to transmit in 20 MHz.
+ */
+ if (conn_flags & IEEE80211_CONN_DISABLE_40MHZ) {
+ cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
+ cap &= ~IEEE80211_HT_CAP_SGI_40;
+ }
+
+ /* set SM PS mode properly */
+ cap &= ~IEEE80211_HT_CAP_SM_PS;
+ switch (smps) {
+ case IEEE80211_SMPS_AUTOMATIC:
+ case IEEE80211_SMPS_NUM_MODES:
+ WARN_ON(1);
+ fallthrough;
+ case IEEE80211_SMPS_OFF:
+ cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
+ IEEE80211_HT_CAP_SM_PS_SHIFT;
+ break;
+ case IEEE80211_SMPS_STATIC:
+ cap |= WLAN_HT_CAP_SM_PS_STATIC <<
+ IEEE80211_HT_CAP_SM_PS_SHIFT;
+ break;
+ case IEEE80211_SMPS_DYNAMIC:
+ cap |= WLAN_HT_CAP_SM_PS_DYNAMIC <<
+ IEEE80211_HT_CAP_SM_PS_SHIFT;
+ break;
+ }
+
+ /* reserve and fill IE */
+ pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
+ ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
+}
+
+/* This function determines vht capability flags for the association
+ * and builds the IE.
+ * Note - the function returns true to own the MU-MIMO capability
+ */
+static bool ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb,
+ struct ieee80211_supported_band *sband,
+ struct ieee80211_vht_cap *ap_vht_cap,
+ ieee80211_conn_flags_t conn_flags)
+{
+ struct ieee80211_local *local = sdata->local;
+ u8 *pos;
+ u32 cap;
+ struct ieee80211_sta_vht_cap vht_cap;
+ u32 mask, ap_bf_sts, our_bf_sts;
+ bool mu_mimo_owner = false;
+
+ BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
+
+ memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
+ ieee80211_apply_vhtcap_overrides(sdata, &vht_cap);
+
+ /* determine capability flags */
+ cap = vht_cap.cap;
+
+ if (conn_flags & IEEE80211_CONN_DISABLE_80P80MHZ) {
+ u32 bw = cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
+
+ cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
+ if (bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ ||
+ bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
+ cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
+ }
+
+ if (conn_flags & IEEE80211_CONN_DISABLE_160MHZ) {
+ cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160;
+ cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
+ }
+
+ /*
+ * Some APs apparently get confused if our capabilities are better
+ * than theirs, so restrict what we advertise in the assoc request.
+ */
+ if (!(ap_vht_cap->vht_cap_info &
+ cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)))
+ cap &= ~(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
+ IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE);
+ else if (!(ap_vht_cap->vht_cap_info &
+ cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)))
+ cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
+
+ /*
+ * If some other vif is using the MU-MIMO capability we cannot associate
+ * using MU-MIMO - this will lead to contradictions in the group-id
+ * mechanism.
+ * Ownership is defined since association request, in order to avoid
+ * simultaneous associations with MU-MIMO.
+ */
+ if (cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) {
+ bool disable_mu_mimo = false;
+ struct ieee80211_sub_if_data *other;
+
+ list_for_each_entry_rcu(other, &local->interfaces, list) {
+ if (other->vif.bss_conf.mu_mimo_owner) {
+ disable_mu_mimo = true;
+ break;
+ }
+ }
+ if (disable_mu_mimo)
+ cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
+ else
+ mu_mimo_owner = true;
+ }
+
+ mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;
+
+ ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask;
+ our_bf_sts = cap & mask;
+
+ if (ap_bf_sts < our_bf_sts) {
+ cap &= ~mask;
+ cap |= ap_bf_sts;
+ }
+
+ /* reserve and fill IE */
+ pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
+ ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
+
+ return mu_mimo_owner;
+}
+
+/* This function determines HE capability flags for the association
+ * and builds the IE.
+ */
+static void ieee80211_add_he_ie(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb,
+ struct ieee80211_supported_band *sband,
+ enum ieee80211_smps_mode smps_mode,
+ ieee80211_conn_flags_t conn_flags)
+{
+ u8 *pos, *pre_he_pos;
+ const struct ieee80211_sta_he_cap *he_cap;
+ u8 he_cap_size;
+
+ he_cap = ieee80211_get_he_iftype_cap(sband,
+ ieee80211_vif_type_p2p(&sdata->vif));
+ if (WARN_ON(!he_cap))
+ return;
+
+ /* get a max size estimate */
+ he_cap_size =
+ 2 + 1 + sizeof(he_cap->he_cap_elem) +
+ ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem) +
+ ieee80211_he_ppe_size(he_cap->ppe_thres[0],
+ he_cap->he_cap_elem.phy_cap_info);
+ pos = skb_put(skb, he_cap_size);
+ pre_he_pos = pos;
+ pos = ieee80211_ie_build_he_cap(conn_flags,
+ pos, he_cap, pos + he_cap_size);
+ /* trim excess if any */
+ skb_trim(skb, skb->len - (pre_he_pos + he_cap_size - pos));
+
+ ieee80211_ie_build_he_6ghz_cap(sdata, smps_mode, skb);
+}
+
+static void ieee80211_add_eht_ie(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb,
+ struct ieee80211_supported_band *sband)
+{
+ u8 *pos;
+ const struct ieee80211_sta_he_cap *he_cap;
+ const struct ieee80211_sta_eht_cap *eht_cap;
+ u8 eht_cap_size;
+
+ he_cap = ieee80211_get_he_iftype_cap(sband,
+ ieee80211_vif_type_p2p(&sdata->vif));
+ eht_cap = ieee80211_get_eht_iftype_cap(sband,
+ ieee80211_vif_type_p2p(&sdata->vif));
+
+ /*
+ * EHT capabilities element is only added if the HE capabilities element
+ * was added so assume that 'he_cap' is valid and don't check it.
+ */
+ if (WARN_ON(!he_cap || !eht_cap))
+ return;
+
+ eht_cap_size =
+ 2 + 1 + sizeof(eht_cap->eht_cap_elem) +
+ ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
+ &eht_cap->eht_cap_elem,
+ false) +
+ ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
+ eht_cap->eht_cap_elem.phy_cap_info);
+ pos = skb_put(skb, eht_cap_size);
+ ieee80211_ie_build_eht_cap(pos, he_cap, eht_cap, pos + eht_cap_size,
+ false);
+}
+
+static void ieee80211_assoc_add_rates(struct sk_buff *skb,
+ enum nl80211_chan_width width,
+ struct ieee80211_supported_band *sband,
+ struct ieee80211_mgd_assoc_data *assoc_data)
+{
+ unsigned int shift = ieee80211_chanwidth_get_shift(width);
+ unsigned int rates_len, supp_rates_len;
+ u32 rates = 0;
+ int i, count;
+ u8 *pos;
+
+ if (assoc_data->supp_rates_len) {
+ /*
+ * Get all rates supported by the device and the AP as
+ * some APs don't like getting a superset of their rates
+ * in the association request (e.g. D-Link DAP 1353 in
+ * b-only mode)...
+ */
+ rates_len = ieee80211_parse_bitrates(width, sband,
+ assoc_data->supp_rates,
+ assoc_data->supp_rates_len,
+ &rates);
+ } else {
+ /*
+ * In case AP not provide any supported rates information
+ * before association, we send information element(s) with
+ * all rates that we support.
+ */
+ rates_len = sband->n_bitrates;
+ for (i = 0; i < sband->n_bitrates; i++)
+ rates |= BIT(i);
+ }
+
+ supp_rates_len = rates_len;
+ if (supp_rates_len > 8)
+ supp_rates_len = 8;
+
+ pos = skb_put(skb, supp_rates_len + 2);
+ *pos++ = WLAN_EID_SUPP_RATES;
+ *pos++ = supp_rates_len;
+
+ count = 0;
+ for (i = 0; i < sband->n_bitrates; i++) {
+ if (BIT(i) & rates) {
+ int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
+ 5 * (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;
+ }
+ }
+ }
+}
+
+static size_t ieee80211_add_before_ht_elems(struct sk_buff *skb,
+ const u8 *elems,
+ size_t elems_len,
+ size_t offset)
+{
+ size_t noffset;
+
+ static const u8 before_ht[] = {
+ WLAN_EID_SSID,
+ WLAN_EID_SUPP_RATES,
+ WLAN_EID_EXT_SUPP_RATES,
+ WLAN_EID_PWR_CAPABILITY,
+ WLAN_EID_SUPPORTED_CHANNELS,
+ WLAN_EID_RSN,
+ WLAN_EID_QOS_CAPA,
+ WLAN_EID_RRM_ENABLED_CAPABILITIES,
+ WLAN_EID_MOBILITY_DOMAIN,
+ WLAN_EID_FAST_BSS_TRANSITION, /* reassoc only */
+ WLAN_EID_RIC_DATA, /* reassoc only */
+ WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
+ };
+ static const u8 after_ric[] = {
+ WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
+ WLAN_EID_HT_CAPABILITY,
+ WLAN_EID_BSS_COEX_2040,
+ /* luckily this is almost always there */
+ WLAN_EID_EXT_CAPABILITY,
+ WLAN_EID_QOS_TRAFFIC_CAPA,
+ WLAN_EID_TIM_BCAST_REQ,
+ WLAN_EID_INTERWORKING,
+ /* 60 GHz (Multi-band, DMG, MMS) can't happen */
+ WLAN_EID_VHT_CAPABILITY,
+ WLAN_EID_OPMODE_NOTIF,
+ };
+
+ if (!elems_len)
+ return offset;
+
+ noffset = ieee80211_ie_split_ric(elems, elems_len,
+ before_ht,
+ ARRAY_SIZE(before_ht),
+ after_ric,
+ ARRAY_SIZE(after_ric),
+ offset);
+ skb_put_data(skb, elems + offset, noffset - offset);
+
+ return noffset;
+}
+
+static size_t ieee80211_add_before_vht_elems(struct sk_buff *skb,
+ const u8 *elems,
+ size_t elems_len,
+ size_t offset)
+{
+ static const u8 before_vht[] = {
+ /*
+ * no need to list the ones split off before HT
+ * or generated here
+ */
+ WLAN_EID_BSS_COEX_2040,
+ WLAN_EID_EXT_CAPABILITY,
+ WLAN_EID_QOS_TRAFFIC_CAPA,
+ WLAN_EID_TIM_BCAST_REQ,
+ WLAN_EID_INTERWORKING,
+ /* 60 GHz (Multi-band, DMG, MMS) can't happen */
+ };
+ size_t noffset;
+
+ if (!elems_len)
+ return offset;
+
+ /* RIC already taken care of in ieee80211_add_before_ht_elems() */
+ noffset = ieee80211_ie_split(elems, elems_len,
+ before_vht, ARRAY_SIZE(before_vht),
+ offset);
+ skb_put_data(skb, elems + offset, noffset - offset);
+
+ return noffset;
+}
+
+static size_t ieee80211_add_before_he_elems(struct sk_buff *skb,
+ const u8 *elems,
+ size_t elems_len,
+ size_t offset)
+{
+ static const u8 before_he[] = {
+ /*
+ * no need to list the ones split off before VHT
+ * or generated here
+ */
+ WLAN_EID_OPMODE_NOTIF,
+ WLAN_EID_EXTENSION, WLAN_EID_EXT_FUTURE_CHAN_GUIDANCE,
+ /* 11ai elements */
+ WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_SESSION,
+ WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_PUBLIC_KEY,
+ WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_KEY_CONFIRM,
+ WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_HLP_CONTAINER,
+ WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_IP_ADDR_ASSIGN,
+ /* TODO: add 11ah/11aj/11ak elements */
+ };
+ size_t noffset;
+
+ if (!elems_len)
+ return offset;
+
+ /* RIC already taken care of in ieee80211_add_before_ht_elems() */
+ noffset = ieee80211_ie_split(elems, elems_len,
+ before_he, ARRAY_SIZE(before_he),
+ offset);
+ skb_put_data(skb, elems + offset, noffset - offset);
+
+ return noffset;
+}
+
+#define PRESENT_ELEMS_MAX 8
+#define PRESENT_ELEM_EXT_OFFS 0x100
+
+static void ieee80211_assoc_add_ml_elem(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb, u16 capab,
+ const struct element *ext_capa,
+ const u16 *present_elems);
+
+static size_t ieee80211_assoc_link_elems(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb, u16 *capab,
+ const struct element *ext_capa,
+ const u8 *extra_elems,
+ size_t extra_elems_len,
+ unsigned int link_id,
+ struct ieee80211_link_data *link,
+ u16 *present_elems)
+{
+ enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
+ struct cfg80211_bss *cbss = assoc_data->link[link_id].bss;
+ struct ieee80211_channel *chan = cbss->channel;
+ const struct ieee80211_sband_iftype_data *iftd;
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_supported_band *sband;
+ enum nl80211_chan_width width = NL80211_CHAN_WIDTH_20;
+ struct ieee80211_chanctx_conf *chanctx_conf;
+ enum ieee80211_smps_mode smps_mode;
+ u16 orig_capab = *capab;
+ size_t offset = 0;
+ int present_elems_len = 0;
+ u8 *pos;
+ int i;
+
+#define ADD_PRESENT_ELEM(id) do { \
+ /* need a last for termination - we use 0 == SSID */ \
+ if (!WARN_ON(present_elems_len >= PRESENT_ELEMS_MAX - 1)) \
+ present_elems[present_elems_len++] = (id); \
+} while (0)
+#define ADD_PRESENT_EXT_ELEM(id) ADD_PRESENT_ELEM(PRESENT_ELEM_EXT_OFFS | (id))
+
+ if (link)
+ smps_mode = link->smps_mode;
+ else if (sdata->u.mgd.powersave)
+ smps_mode = IEEE80211_SMPS_DYNAMIC;
+ else
+ smps_mode = IEEE80211_SMPS_OFF;
+
+ if (link) {
+ /*
+ * 5/10 MHz scenarios are only viable without MLO, in which
+ * case this pointer should be used ... All of this is a bit
+ * unclear though, not sure this even works at all.
+ */
+ rcu_read_lock();
+ chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
+ if (chanctx_conf)
+ width = chanctx_conf->def.width;
+ rcu_read_unlock();
+ }
+
+ sband = local->hw.wiphy->bands[chan->band];
+ iftd = ieee80211_get_sband_iftype_data(sband, iftype);
+
+ if (sband->band == NL80211_BAND_2GHZ) {
+ *capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
+ *capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
+ }
+
+ if ((cbss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
+ ieee80211_hw_check(&local->hw, SPECTRUM_MGMT))
+ *capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
+
+ if (sband->band != NL80211_BAND_S1GHZ)
+ ieee80211_assoc_add_rates(skb, width, sband, assoc_data);
+
+ if (*capab & WLAN_CAPABILITY_SPECTRUM_MGMT ||
+ *capab & WLAN_CAPABILITY_RADIO_MEASURE) {
+ struct cfg80211_chan_def chandef = {
+ .width = width,
+ .chan = chan,
+ };
+
+ pos = skb_put(skb, 4);
+ *pos++ = WLAN_EID_PWR_CAPABILITY;
+ *pos++ = 2;
+ *pos++ = 0; /* min tx power */
+ /* max tx power */
+ *pos++ = ieee80211_chandef_max_power(&chandef);
+ ADD_PRESENT_ELEM(WLAN_EID_PWR_CAPABILITY);
+ }
+
+ /*
+ * Per spec, we shouldn't include the list of channels if we advertise
+ * support for extended channel switching, but we've always done that;
+ * (for now?) apply this restriction only on the (new) 6 GHz band.
+ */
+ if (*capab & WLAN_CAPABILITY_SPECTRUM_MGMT &&
+ (sband->band != NL80211_BAND_6GHZ ||
+ !ext_capa || ext_capa->datalen < 1 ||
+ !(ext_capa->data[0] & WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING))) {
+ /* TODO: get this in reg domain format */
+ pos = skb_put(skb, 2 * sband->n_channels + 2);
+ *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
+ *pos++ = 2 * sband->n_channels;
+ for (i = 0; i < sband->n_channels; i++) {
+ int cf = sband->channels[i].center_freq;
+
+ *pos++ = ieee80211_frequency_to_channel(cf);
+ *pos++ = 1; /* one channel in the subband*/
+ }
+ ADD_PRESENT_ELEM(WLAN_EID_SUPPORTED_CHANNELS);
+ }
+
+ /* if present, add any custom IEs that go before HT */
+ offset = ieee80211_add_before_ht_elems(skb, extra_elems,
+ extra_elems_len,
+ offset);
+
+ if (sband->band != NL80211_BAND_6GHZ &&
+ !(assoc_data->link[link_id].conn_flags & IEEE80211_CONN_DISABLE_HT)) {
+ ieee80211_add_ht_ie(sdata, skb,
+ assoc_data->link[link_id].ap_ht_param,
+ sband, chan, smps_mode,
+ assoc_data->link[link_id].conn_flags);
+ ADD_PRESENT_ELEM(WLAN_EID_HT_CAPABILITY);
+ }
+
+ /* if present, add any custom IEs that go before VHT */
+ offset = ieee80211_add_before_vht_elems(skb, extra_elems,
+ extra_elems_len,
+ offset);
+
+ if (sband->band != NL80211_BAND_6GHZ &&
+ !(assoc_data->link[link_id].conn_flags & IEEE80211_CONN_DISABLE_VHT)) {
+ bool mu_mimo_owner =
+ ieee80211_add_vht_ie(sdata, skb, sband,
+ &assoc_data->link[link_id].ap_vht_cap,
+ assoc_data->link[link_id].conn_flags);
+
+ if (link)
+ link->conf->mu_mimo_owner = mu_mimo_owner;
+ ADD_PRESENT_ELEM(WLAN_EID_VHT_CAPABILITY);
+ }
+
+ /*
+ * If AP doesn't support HT, mark HE and EHT as disabled.
+ * If on the 5GHz band, make sure it supports VHT.
+ */
+ if (assoc_data->link[link_id].conn_flags & IEEE80211_CONN_DISABLE_HT ||
+ (sband->band == NL80211_BAND_5GHZ &&
+ assoc_data->link[link_id].conn_flags & IEEE80211_CONN_DISABLE_VHT))
+ assoc_data->link[link_id].conn_flags |=
+ IEEE80211_CONN_DISABLE_HE |
+ IEEE80211_CONN_DISABLE_EHT;
+
+ /* if present, add any custom IEs that go before HE */
+ offset = ieee80211_add_before_he_elems(skb, extra_elems,
+ extra_elems_len,
+ offset);
+
+ if (!(assoc_data->link[link_id].conn_flags & IEEE80211_CONN_DISABLE_HE)) {
+ ieee80211_add_he_ie(sdata, skb, sband, smps_mode,
+ assoc_data->link[link_id].conn_flags);
+ ADD_PRESENT_EXT_ELEM(WLAN_EID_EXT_HE_CAPABILITY);
+ }
+
+ /*
+ * careful - need to know about all the present elems before
+ * calling ieee80211_assoc_add_ml_elem(), so add this one if
+ * we're going to put it after the ML element
+ */
+ if (!(assoc_data->link[link_id].conn_flags & IEEE80211_CONN_DISABLE_EHT))
+ ADD_PRESENT_EXT_ELEM(WLAN_EID_EXT_EHT_CAPABILITY);
+
+ if (link_id == assoc_data->assoc_link_id)
+ ieee80211_assoc_add_ml_elem(sdata, skb, orig_capab, ext_capa,
+ present_elems);
+
+ /* crash if somebody gets it wrong */
+ present_elems = NULL;
+
+ if (!(assoc_data->link[link_id].conn_flags & IEEE80211_CONN_DISABLE_EHT))
+ ieee80211_add_eht_ie(sdata, skb, sband);
+
+ if (sband->band == NL80211_BAND_S1GHZ) {
+ ieee80211_add_aid_request_ie(sdata, skb);
+ ieee80211_add_s1g_capab_ie(sdata, &sband->s1g_cap, skb);
+ }
+
+ if (iftd && iftd->vendor_elems.data && iftd->vendor_elems.len)
+ skb_put_data(skb, iftd->vendor_elems.data, iftd->vendor_elems.len);
+
+ if (link)
+ link->u.mgd.conn_flags = assoc_data->link[link_id].conn_flags;
+
+ return offset;
+}
+
+static void ieee80211_add_non_inheritance_elem(struct sk_buff *skb,
+ const u16 *outer,
+ const u16 *inner)
+{
+ unsigned int skb_len = skb->len;
+ bool at_extension = false;
+ bool added = false;
+ int i, j;
+ u8 *len, *list_len = NULL;
+
+ skb_put_u8(skb, WLAN_EID_EXTENSION);
+ len = skb_put(skb, 1);
+ skb_put_u8(skb, WLAN_EID_EXT_NON_INHERITANCE);
+
+ for (i = 0; i < PRESENT_ELEMS_MAX && outer[i]; i++) {
+ u16 elem = outer[i];
+ bool have_inner = false;
+
+ /* should at least be sorted in the sense of normal -> ext */
+ WARN_ON(at_extension && elem < PRESENT_ELEM_EXT_OFFS);
+
+ /* switch to extension list */
+ if (!at_extension && elem >= PRESENT_ELEM_EXT_OFFS) {
+ at_extension = true;
+ if (!list_len)
+ skb_put_u8(skb, 0);
+ list_len = NULL;
+ }
+
+ for (j = 0; j < PRESENT_ELEMS_MAX && inner[j]; j++) {
+ if (elem == inner[j]) {
+ have_inner = true;
+ break;
+ }
+ }
+
+ if (have_inner)
+ continue;
+
+ if (!list_len) {
+ list_len = skb_put(skb, 1);
+ *list_len = 0;
+ }
+ *list_len += 1;
+ skb_put_u8(skb, (u8)elem);
+ added = true;
+ }
+
+ /* if we added a list but no extension list, make a zero-len one */
+ if (added && (!at_extension || !list_len))
+ skb_put_u8(skb, 0);
+
+ /* if nothing added remove extension element completely */
+ if (!added)
+ skb_trim(skb, skb_len);
+ else
+ *len = skb->len - skb_len - 2;
+}
+
+static void ieee80211_assoc_add_ml_elem(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb, u16 capab,
+ const struct element *ext_capa,
+ const u16 *outer_present_elems)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
+ struct ieee80211_multi_link_elem *ml_elem;
+ struct ieee80211_mle_basic_common_info *common;
+ const struct wiphy_iftype_ext_capab *ift_ext_capa;
+ __le16 eml_capa = 0, mld_capa_ops = 0;
+ unsigned int link_id;
+ u8 *ml_elem_len;
+ void *capab_pos;
+
+ if (!sdata->vif.valid_links)
+ return;
+
+ ift_ext_capa = cfg80211_get_iftype_ext_capa(local->hw.wiphy,
+ ieee80211_vif_type_p2p(&sdata->vif));
+ if (ift_ext_capa) {
+ eml_capa = cpu_to_le16(ift_ext_capa->eml_capabilities);
+ mld_capa_ops = cpu_to_le16(ift_ext_capa->mld_capa_and_ops);
+ }
+
+ skb_put_u8(skb, WLAN_EID_EXTENSION);
+ ml_elem_len = skb_put(skb, 1);
+ skb_put_u8(skb, WLAN_EID_EXT_EHT_MULTI_LINK);
+ ml_elem = skb_put(skb, sizeof(*ml_elem));
+ ml_elem->control =
+ cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC |
+ IEEE80211_MLC_BASIC_PRES_MLD_CAPA_OP);
+ common = skb_put(skb, sizeof(*common));
+ common->len = sizeof(*common) +
+ 2; /* MLD capa/ops */
+ memcpy(common->mld_mac_addr, sdata->vif.addr, ETH_ALEN);
+
+ /* add EML_CAPA only if needed, see Draft P802.11be_D2.1, 35.3.17 */
+ if (eml_capa &
+ cpu_to_le16((IEEE80211_EML_CAP_EMLSR_SUPP |
+ IEEE80211_EML_CAP_EMLMR_SUPPORT))) {
+ common->len += 2; /* EML capabilities */
+ ml_elem->control |=
+ cpu_to_le16(IEEE80211_MLC_BASIC_PRES_EML_CAPA);
+ skb_put_data(skb, &eml_capa, sizeof(eml_capa));
+ }
+ /* need indication from userspace to support this */
+ mld_capa_ops &= ~cpu_to_le16(IEEE80211_MLD_CAP_OP_TID_TO_LINK_MAP_NEG_SUPP);
+ skb_put_data(skb, &mld_capa_ops, sizeof(mld_capa_ops));
+
+ for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
+ u16 link_present_elems[PRESENT_ELEMS_MAX] = {};
+ const u8 *extra_elems;
+ size_t extra_elems_len;
+ size_t extra_used;
+ u8 *subelem_len = NULL;
+ __le16 ctrl;
+
+ if (!assoc_data->link[link_id].bss ||
+ link_id == assoc_data->assoc_link_id)
+ continue;
+
+ extra_elems = assoc_data->link[link_id].elems;
+ extra_elems_len = assoc_data->link[link_id].elems_len;
+
+ skb_put_u8(skb, IEEE80211_MLE_SUBELEM_PER_STA_PROFILE);
+ subelem_len = skb_put(skb, 1);
+
+ ctrl = cpu_to_le16(link_id |
+ IEEE80211_MLE_STA_CONTROL_COMPLETE_PROFILE |
+ IEEE80211_MLE_STA_CONTROL_STA_MAC_ADDR_PRESENT);
+ skb_put_data(skb, &ctrl, sizeof(ctrl));
+ skb_put_u8(skb, 1 + ETH_ALEN); /* STA Info Length */
+ skb_put_data(skb, assoc_data->link[link_id].addr,
+ ETH_ALEN);
+ /*
+ * Now add the contents of the (re)association request,
+ * but the "listen interval" and "current AP address"
+ * (if applicable) are skipped. So we only have
+ * the capability field (remember the position and fill
+ * later), followed by the elements added below by
+ * calling ieee80211_assoc_link_elems().
+ */
+ capab_pos = skb_put(skb, 2);
+
+ extra_used = ieee80211_assoc_link_elems(sdata, skb, &capab,
+ ext_capa,
+ extra_elems,
+ extra_elems_len,
+ link_id, NULL,
+ link_present_elems);
+ if (extra_elems)
+ skb_put_data(skb, extra_elems + extra_used,
+ extra_elems_len - extra_used);
+
+ put_unaligned_le16(capab, capab_pos);
+
+ ieee80211_add_non_inheritance_elem(skb, outer_present_elems,
+ link_present_elems);
+
+ ieee80211_fragment_element(skb, subelem_len);
+ }
+
+ ieee80211_fragment_element(skb, ml_elem_len);
+}
+
+static int ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
+ struct ieee80211_link_data *link;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ u8 *pos, qos_info, *ie_start;
+ size_t offset, noffset;
+ u16 capab = WLAN_CAPABILITY_ESS, link_capab;
+ __le16 listen_int;
+ struct element *ext_capa = NULL;
+ enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
+ struct ieee80211_prep_tx_info info = {};
+ unsigned int link_id, n_links = 0;
+ u16 present_elems[PRESENT_ELEMS_MAX] = {};
+ void *capab_pos;
+ size_t size;
+ int ret;
+
+ /* we know it's writable, cast away the const */
+ if (assoc_data->ie_len)
+ ext_capa = (void *)cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY,
+ assoc_data->ie,
+ assoc_data->ie_len);
+
+ sdata_assert_lock(sdata);
+
+ size = local->hw.extra_tx_headroom +
+ sizeof(*mgmt) + /* bit too much but doesn't matter */
+ 2 + assoc_data->ssid_len + /* SSID */
+ assoc_data->ie_len + /* extra IEs */
+ (assoc_data->fils_kek_len ? 16 /* AES-SIV */ : 0) +
+ 9; /* WMM */
+
+ for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
+ struct cfg80211_bss *cbss = assoc_data->link[link_id].bss;
+ const struct ieee80211_sband_iftype_data *iftd;
+ struct ieee80211_supported_band *sband;
+
+ if (!cbss)
+ continue;
+
+ sband = local->hw.wiphy->bands[cbss->channel->band];
+
+ n_links++;
+ /* add STA profile elements length */
+ size += assoc_data->link[link_id].elems_len;
+ /* and supported rates length */
+ size += 4 + sband->n_bitrates;
+ /* supported channels */
+ size += 2 + 2 * sband->n_channels;
+
+ iftd = ieee80211_get_sband_iftype_data(sband, iftype);
+ if (iftd)
+ size += iftd->vendor_elems.len;
+
+ /* power capability */
+ size += 4;
+
+ /* HT, VHT, HE, EHT */
+ size += 2 + sizeof(struct ieee80211_ht_cap);
+ size += 2 + sizeof(struct ieee80211_vht_cap);
+ size += 2 + 1 + sizeof(struct ieee80211_he_cap_elem) +
+ sizeof(struct ieee80211_he_mcs_nss_supp) +
+ IEEE80211_HE_PPE_THRES_MAX_LEN;
+
+ if (sband->band == NL80211_BAND_6GHZ)
+ size += 2 + 1 + sizeof(struct ieee80211_he_6ghz_capa);
+
+ size += 2 + 1 + sizeof(struct ieee80211_eht_cap_elem) +
+ sizeof(struct ieee80211_eht_mcs_nss_supp) +
+ IEEE80211_EHT_PPE_THRES_MAX_LEN;
+
+ /* non-inheritance element */
+ size += 2 + 2 + PRESENT_ELEMS_MAX;
+
+ /* should be the same across all BSSes */
+ if (cbss->capability & WLAN_CAPABILITY_PRIVACY)
+ capab |= WLAN_CAPABILITY_PRIVACY;
+ }
+
+ if (sdata->vif.valid_links) {
+ /* consider the multi-link element with STA profile */
+ size += sizeof(struct ieee80211_multi_link_elem);
+ /* max common info field in basic multi-link element */
+ size += sizeof(struct ieee80211_mle_basic_common_info) +
+ 2 + /* capa & op */
+ 2; /* EML capa */
+
+ /*
+ * The capability elements were already considered above;
+ * note this over-estimates a bit because there's no
+ * STA profile for the assoc link.
+ */
+ size += (n_links - 1) *
+ (1 + 1 + /* subelement ID/length */
+ 2 + /* STA control */
+ 1 + ETH_ALEN + 2 /* STA Info field */);
+ }
+
+ link = sdata_dereference(sdata->link[assoc_data->assoc_link_id], sdata);
+ if (WARN_ON(!link))
+ return -EINVAL;
+
+ if (WARN_ON(!assoc_data->link[assoc_data->assoc_link_id].bss))
+ return -EINVAL;
+
+ skb = alloc_skb(size, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM)
+ capab |= WLAN_CAPABILITY_RADIO_MEASURE;
+
+ /* Set MBSSID support for HE AP if needed */
+ if (ieee80211_hw_check(&local->hw, SUPPORTS_ONLY_HE_MULTI_BSSID) &&
+ !(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HE) &&
+ ext_capa && ext_capa->datalen >= 3)
+ ext_capa->data[2] |= WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT;
+
+ mgmt = skb_put_zero(skb, 24);
+ memcpy(mgmt->da, sdata->vif.cfg.ap_addr, ETH_ALEN);
+ memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
+ memcpy(mgmt->bssid, sdata->vif.cfg.ap_addr, ETH_ALEN);
+
+ listen_int = cpu_to_le16(assoc_data->s1g ?
+ ieee80211_encode_usf(local->hw.conf.listen_interval) :
+ local->hw.conf.listen_interval);
+ if (!is_zero_ether_addr(assoc_data->prev_ap_addr)) {
+ skb_put(skb, 10);
+ mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+ IEEE80211_STYPE_REASSOC_REQ);
+ capab_pos = &mgmt->u.reassoc_req.capab_info;
+ mgmt->u.reassoc_req.listen_interval = listen_int;
+ memcpy(mgmt->u.reassoc_req.current_ap,
+ assoc_data->prev_ap_addr, ETH_ALEN);
+ info.subtype = IEEE80211_STYPE_REASSOC_REQ;
+ } else {
+ skb_put(skb, 4);
+ mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+ IEEE80211_STYPE_ASSOC_REQ);
+ capab_pos = &mgmt->u.assoc_req.capab_info;
+ mgmt->u.assoc_req.listen_interval = listen_int;
+ info.subtype = IEEE80211_STYPE_ASSOC_REQ;
+ }
+
+ /* SSID */
+ pos = skb_put(skb, 2 + assoc_data->ssid_len);
+ ie_start = pos;
+ *pos++ = WLAN_EID_SSID;
+ *pos++ = assoc_data->ssid_len;
+ memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
+
+ /* add the elements for the assoc (main) link */
+ link_capab = capab;
+ offset = ieee80211_assoc_link_elems(sdata, skb, &link_capab,
+ ext_capa,
+ assoc_data->ie,
+ assoc_data->ie_len,
+ assoc_data->assoc_link_id, link,
+ present_elems);
+ put_unaligned_le16(link_capab, capab_pos);
+
+ /* if present, add any custom non-vendor IEs */
+ if (assoc_data->ie_len) {
+ noffset = ieee80211_ie_split_vendor(assoc_data->ie,
+ assoc_data->ie_len,
+ offset);
+ skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
+ offset = noffset;
+ }
+
+ if (assoc_data->wmm) {
+ if (assoc_data->uapsd) {
+ qos_info = ifmgd->uapsd_queues;
+ qos_info |= (ifmgd->uapsd_max_sp_len <<
+ IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT);
+ } else {
+ qos_info = 0;
+ }
+
+ pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info);
+ }
+
+ /* add any remaining custom (i.e. vendor specific here) IEs */
+ if (assoc_data->ie_len) {
+ noffset = assoc_data->ie_len;
+ skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
+ }
+
+ if (assoc_data->fils_kek_len) {
+ ret = fils_encrypt_assoc_req(skb, assoc_data);
+ if (ret < 0) {
+ dev_kfree_skb(skb);
+ return ret;
+ }
+ }
+
+ pos = skb_tail_pointer(skb);
+ kfree(ifmgd->assoc_req_ies);
+ ifmgd->assoc_req_ies = kmemdup(ie_start, pos - ie_start, GFP_ATOMIC);
+ if (!ifmgd->assoc_req_ies) {
+ dev_kfree_skb(skb);
+ return -ENOMEM;
+ }
+
+ ifmgd->assoc_req_ies_len = pos - ie_start;
+
+ drv_mgd_prepare_tx(local, sdata, &info);
+
+ IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
+ if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
+ IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
+ IEEE80211_TX_INTFL_MLME_CONN_TX;
+ ieee80211_tx_skb(sdata, skb);
+
+ return 0;
+}
+
+void ieee80211_send_pspoll(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_pspoll *pspoll;
+ struct sk_buff *skb;
+
+ skb = ieee80211_pspoll_get(&local->hw, &sdata->vif);
+ if (!skb)
+ return;
+
+ pspoll = (struct ieee80211_pspoll *) skb->data;
+ pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
+
+ IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
+ ieee80211_tx_skb(sdata, skb);
+}
+
+void ieee80211_send_nullfunc(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ bool powersave)
+{
+ struct sk_buff *skb;
+ struct ieee80211_hdr_3addr *nullfunc;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+
+ skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif, -1,
+ !ieee80211_hw_check(&local->hw,
+ DOESNT_SUPPORT_QOS_NDP));
+ if (!skb)
+ return;
+
+ nullfunc = (struct ieee80211_hdr_3addr *) skb->data;
+ if (powersave)
+ nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
+
+ IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
+ IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
+
+ if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
+ IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
+
+ if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
+ IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
+
+ ieee80211_tx_skb(sdata, skb);
+}
+
+void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata)
+{
+ struct sk_buff *skb;
+ struct ieee80211_hdr *nullfunc;
+ __le16 fc;
+
+ if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
+ return;
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
+ if (!skb)
+ return;
+
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ nullfunc = skb_put_zero(skb, 30);
+ fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
+ IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
+ nullfunc->frame_control = fc;
+ memcpy(nullfunc->addr1, sdata->deflink.u.mgd.bssid, ETH_ALEN);
+ memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
+ memcpy(nullfunc->addr3, sdata->deflink.u.mgd.bssid, ETH_ALEN);
+ memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
+
+ IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
+ IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
+ ieee80211_tx_skb(sdata, skb);
+}
+
+/* spectrum management related things */
+static void ieee80211_chswitch_work(struct work_struct *work)
+{
+ struct ieee80211_link_data *link =
+ container_of(work, struct ieee80211_link_data, u.mgd.chswitch_work);
+ struct ieee80211_sub_if_data *sdata = link->sdata;
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ int ret;
+
+ if (!ieee80211_sdata_running(sdata))
+ return;
+
+ sdata_lock(sdata);
+ mutex_lock(&local->mtx);
+ mutex_lock(&local->chanctx_mtx);
+
+ if (!ifmgd->associated)
+ goto out;
+
+ if (!link->conf->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 (link->reserved_chanctx) {
+ /*
+ * with multi-vif csa driver may call ieee80211_csa_finish()
+ * many times while waiting for other interfaces to use their
+ * reservations
+ */
+ if (link->reserved_ready)
+ goto out;
+
+ ret = ieee80211_link_use_reserved_context(link);
+ 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;
+ }
+
+ goto out;
+ }
+
+ if (!cfg80211_chandef_identical(&link->conf->chandef,
+ &link->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;
+ }
+
+ link->u.mgd.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_link_data *link)
+{
+ struct ieee80211_sub_if_data *sdata = link->sdata;
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ int ret;
+
+ sdata_assert_lock(sdata);
+
+ WARN_ON(!link->conf->csa_active);
+
+ if (link->csa_block_tx) {
+ ieee80211_wake_vif_queues(local, sdata,
+ IEEE80211_QUEUE_STOP_REASON_CSA);
+ link->csa_block_tx = false;
+ }
+
+ link->conf->csa_active = false;
+ link->u.mgd.csa_waiting_bcn = false;
+ /*
+ * If the CSA IE is still present on the beacon after the switch,
+ * we need to consider it as a new CSA (possibly to self).
+ */
+ link->u.mgd.beacon_crc_valid = false;
+
+ ret = drv_post_channel_switch(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, &link->reserved_chandef, 0);
+}
+
+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;
+
+ if (WARN_ON(sdata->vif.valid_links))
+ success = false;
+
+ 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,
+ &sdata->deflink.u.mgd.chswitch_work);
+ }
+}
+EXPORT_SYMBOL(ieee80211_chswitch_done);
+
+static void ieee80211_chswitch_timer(struct timer_list *t)
+{
+ struct ieee80211_link_data *link =
+ from_timer(link, t, u.mgd.chswitch_timer);
+
+ ieee80211_queue_work(&link->sdata->local->hw,
+ &link->u.mgd.chswitch_work);
+}
+
+static void
+ieee80211_sta_abort_chanswitch(struct ieee80211_link_data *link)
+{
+ struct ieee80211_sub_if_data *sdata = link->sdata;
+ struct ieee80211_local *local = sdata->local;
+
+ if (!local->ops->abort_channel_switch)
+ return;
+
+ mutex_lock(&local->mtx);
+
+ mutex_lock(&local->chanctx_mtx);
+ ieee80211_link_unreserve_chanctx(link);
+ mutex_unlock(&local->chanctx_mtx);
+
+ if (link->csa_block_tx)
+ ieee80211_wake_vif_queues(local, sdata,
+ IEEE80211_QUEUE_STOP_REASON_CSA);
+
+ link->csa_block_tx = false;
+ link->conf->csa_active = false;
+
+ mutex_unlock(&local->mtx);
+
+ drv_abort_channel_switch(sdata);
+}
+
+static void
+ieee80211_sta_process_chanswitch(struct ieee80211_link_data *link,
+ u64 timestamp, u32 device_timestamp,
+ struct ieee802_11_elems *elems,
+ bool beacon)
+{
+ struct ieee80211_sub_if_data *sdata = link->sdata;
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct cfg80211_bss *cbss = link->u.mgd.bss;
+ struct ieee80211_chanctx_conf *conf;
+ struct ieee80211_chanctx *chanctx;
+ enum nl80211_band current_band;
+ struct ieee80211_csa_ie csa_ie;
+ struct ieee80211_channel_switch ch_switch;
+ struct ieee80211_bss *bss;
+ 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,
+ link->u.mgd.conn_flags,
+ link->u.mgd.bssid, &csa_ie);
+
+ if (!res) {
+ ch_switch.timestamp = timestamp;
+ ch_switch.device_timestamp = device_timestamp;
+ ch_switch.block_tx = csa_ie.mode;
+ ch_switch.chandef = csa_ie.chandef;
+ ch_switch.count = csa_ie.count;
+ ch_switch.delay = csa_ie.max_switch_time;
+ }
+
+ if (res < 0)
+ goto lock_and_drop_connection;
+
+ if (beacon && link->conf->csa_active &&
+ !link->u.mgd.csa_waiting_bcn) {
+ if (res)
+ ieee80211_sta_abort_chanswitch(link);
+ else
+ drv_channel_switch_rx_beacon(sdata, &ch_switch);
+ return;
+ } else if (link->conf->csa_active || res) {
+ /* disregard subsequent announcements if already processing */
+ return;
+ }
+
+ if (link->conf->chandef.chan->band !=
+ csa_ie.chandef.chan->band) {
+ sdata_info(sdata,
+ "AP %pM switches to different band (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
+ link->u.mgd.bssid,
+ csa_ie.chandef.chan->center_freq,
+ csa_ie.chandef.width, csa_ie.chandef.center_freq1,
+ csa_ie.chandef.center_freq2);
+ goto 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",
+ link->u.mgd.bssid,
+ csa_ie.chandef.chan->center_freq,
+ csa_ie.chandef.chan->freq_offset,
+ csa_ie.chandef.width, csa_ie.chandef.center_freq1,
+ csa_ie.chandef.freq1_offset,
+ csa_ie.chandef.center_freq2);
+ goto lock_and_drop_connection;
+ }
+
+ if (cfg80211_chandef_identical(&csa_ie.chandef,
+ &link->conf->chandef) &&
+ (!csa_ie.mode || !beacon)) {
+ if (link->u.mgd.csa_ignored_same_chan)
+ return;
+ sdata_info(sdata,
+ "AP %pM tries to chanswitch to same channel, ignore\n",
+ link->u.mgd.bssid);
+ link->u.mgd.csa_ignored_same_chan = true;
+ return;
+ }
+
+ /*
+ * Drop all TDLS peers - either we disconnect or move to a different
+ * channel from this point on. There's no telling what our peer will do.
+ * The TDLS WIDER_BW scenario is also problematic, as peers might now
+ * have an incompatible wider chandef.
+ */
+ ieee80211_teardown_tdls_peers(sdata);
+
+ mutex_lock(&local->mtx);
+ mutex_lock(&local->chanctx_mtx);
+ conf = rcu_dereference_protected(link->conf->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_link_reserve_chanctx(link, &csa_ie.chandef,
+ chanctx->mode, false);
+ if (res) {
+ sdata_info(sdata,
+ "failed to reserve channel context for channel switch, disconnecting (err=%d)\n",
+ res);
+ goto drop_connection;
+ }
+ mutex_unlock(&local->chanctx_mtx);
+
+ link->conf->csa_active = true;
+ link->csa_chandef = csa_ie.chandef;
+ link->csa_block_tx = csa_ie.mode;
+ link->u.mgd.csa_ignored_same_chan = false;
+ link->u.mgd.beacon_crc_valid = false;
+
+ if (link->csa_block_tx)
+ ieee80211_stop_vif_queues(local, sdata,
+ IEEE80211_QUEUE_STOP_REASON_CSA);
+ mutex_unlock(&local->mtx);
+
+ cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef, 0,
+ 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, &link->u.mgd.chswitch_work);
+ else
+ mod_timer(&link->u.mgd.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.
+ */
+ link->conf->csa_active = true;
+ link->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:
+ case NL80211_BAND_LC:
+ chan_increment = 1;
+ break;
+ case NL80211_BAND_5GHZ:
+ chan_increment = 4;
+ break;
+ case NL80211_BAND_6GHZ:
+ /*
+ * In the 6 GHz band, the "maximum transmit power level"
+ * field in the triplets is reserved, and thus will be
+ * zero and we shouldn't use it to control TX power.
+ * The actual TX power will be given in the transmit
+ * power envelope element instead.
+ */
+ return false;
+ }
+
+ /* find channel */
+ while (country_ie_len >= 3) {
+ u8 first_channel = triplet->chans.first_channel;
+
+ if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
+ goto next;
+
+ for (i = 0; i < triplet->chans.num_channels; i++) {
+ if (first_channel + i * chan_increment == chan) {
+ have_chan_pwr = true;
+ *chan_pwr = triplet->chans.max_power;
+ break;
+ }
+ }
+ if (have_chan_pwr)
+ break;
+
+ next:
+ triplet++;
+ country_ie_len -= 3;
+ }
+
+ if (have_chan_pwr && pwr_constr_elem)
+ *pwr_reduction = *pwr_constr_elem;
+ else
+ *pwr_reduction = 0;
+
+ return have_chan_pwr;
+}
+
+static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_channel *channel,
+ const u8 *cisco_dtpc_ie,
+ int *pwr_level)
+{
+ /* From practical testing, the first data byte of the DTPC element
+ * seems to contain the requested dBm level, and the CLI on Cisco
+ * APs clearly state the range is -127 to 127 dBm, which indicates
+ * a signed byte, although it seemingly never actually goes negative.
+ * The other byte seems to always be zero.
+ */
+ *pwr_level = (__s8)cisco_dtpc_ie[4];
+}
+
+static u32 ieee80211_handle_pwr_constr(struct ieee80211_link_data *link,
+ struct ieee80211_channel *channel,
+ struct ieee80211_mgmt *mgmt,
+ const u8 *country_ie, u8 country_ie_len,
+ const u8 *pwr_constr_ie,
+ const u8 *cisco_dtpc_ie)
+{
+ struct ieee80211_sub_if_data *sdata = link->sdata;
+ bool has_80211h_pwr = false, has_cisco_pwr = false;
+ int chan_pwr = 0, pwr_reduction_80211h = 0;
+ int pwr_level_cisco, pwr_level_80211h;
+ int new_ap_level;
+ __le16 capab = mgmt->u.probe_resp.capab_info;
+
+ if (ieee80211_is_s1g_beacon(mgmt->frame_control))
+ return 0; /* TODO */
+
+ if (country_ie &&
+ (capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) ||
+ capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) {
+ has_80211h_pwr = ieee80211_find_80211h_pwr_constr(
+ sdata, channel, country_ie, country_ie_len,
+ pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h);
+ pwr_level_80211h =
+ max_t(int, 0, chan_pwr - pwr_reduction_80211h);
+ }
+
+ if (cisco_dtpc_ie) {
+ ieee80211_find_cisco_dtpc(
+ sdata, channel, cisco_dtpc_ie, &pwr_level_cisco);
+ has_cisco_pwr = true;
+ }
+
+ if (!has_80211h_pwr && !has_cisco_pwr)
+ return 0;
+
+ /* If we have both 802.11h and Cisco DTPC, apply both limits
+ * by picking the smallest of the two power levels advertised.
+ */
+ if (has_80211h_pwr &&
+ (!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) {
+ new_ap_level = pwr_level_80211h;
+
+ if (link->ap_power_level == new_ap_level)
+ return 0;
+
+ sdata_dbg(sdata,
+ "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
+ pwr_level_80211h, chan_pwr, pwr_reduction_80211h,
+ link->u.mgd.bssid);
+ } else { /* has_cisco_pwr is always true here. */
+ new_ap_level = pwr_level_cisco;
+
+ if (link->ap_power_level == new_ap_level)
+ return 0;
+
+ sdata_dbg(sdata,
+ "Limiting TX power to %d dBm as advertised by %pM\n",
+ pwr_level_cisco, link->u.mgd.bssid);
+ }
+
+ link->ap_power_level = new_ap_level;
+ if (__ieee80211_recalc_txpower(sdata))
+ return BSS_CHANGED_TXPOWER;
+ return 0;
+}
+
+/* powersave */
+static void ieee80211_enable_ps(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_conf *conf = &local->hw.conf;
+
+ /*
+ * If we are scanning right now then the parameters will
+ * take effect when scan finishes.
+ */
+ if (local->scanning)
+ return;
+
+ if (conf->dynamic_ps_timeout > 0 &&
+ !ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) {
+ mod_timer(&local->dynamic_ps_timer, jiffies +
+ msecs_to_jiffies(conf->dynamic_ps_timeout));
+ } else {
+ if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK))
+ ieee80211_send_nullfunc(local, sdata, true);
+
+ if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
+ ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
+ return;
+
+ conf->flags |= IEEE80211_CONF_PS;
+ ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
+ }
+}
+
+static void ieee80211_change_ps(struct ieee80211_local *local)
+{
+ struct ieee80211_conf *conf = &local->hw.conf;
+
+ if (local->ps_sdata) {
+ ieee80211_enable_ps(local, local->ps_sdata);
+ } else if (conf->flags & IEEE80211_CONF_PS) {
+ conf->flags &= ~IEEE80211_CONF_PS;
+ ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
+ del_timer_sync(&local->dynamic_ps_timer);
+ cancel_work_sync(&local->dynamic_ps_enable_work);
+ }
+}
+
+static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_managed *mgd = &sdata->u.mgd;
+ struct sta_info *sta = NULL;
+ bool authorized = false;
+
+ if (!mgd->powersave)
+ return false;
+
+ if (mgd->broken_ap)
+ return false;
+
+ if (!mgd->associated)
+ return false;
+
+ if (mgd->flags & IEEE80211_STA_CONNECTION_POLL)
+ return false;
+
+ if (!(local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO) &&
+ !sdata->deflink.u.mgd.have_beacon)
+ return false;
+
+ rcu_read_lock();
+ sta = sta_info_get(sdata, sdata->vif.cfg.ap_addr);
+ if (sta)
+ authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
+ rcu_read_unlock();
+
+ return authorized;
+}
+
+/* need to hold RTNL or interface lock */
+void ieee80211_recalc_ps(struct ieee80211_local *local)
+{
+ struct ieee80211_sub_if_data *sdata, *found = NULL;
+ int count = 0;
+ int timeout;
+
+ if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS) ||
+ ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) {
+ local->ps_sdata = NULL;
+ return;
+ }
+
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ if (!ieee80211_sdata_running(sdata))
+ continue;
+ if (sdata->vif.type == NL80211_IFTYPE_AP) {
+ /* If an AP vif is found, then disable PS
+ * by setting the count to zero thereby setting
+ * ps_sdata to NULL.
+ */
+ count = 0;
+ break;
+ }
+ if (sdata->vif.type != NL80211_IFTYPE_STATION)
+ continue;
+ found = sdata;
+ count++;
+ }
+
+ if (count == 1 && ieee80211_powersave_allowed(found)) {
+ u8 dtimper = found->deflink.u.mgd.dtim_period;
+
+ timeout = local->dynamic_ps_forced_timeout;
+ if (timeout < 0)
+ timeout = 100;
+ local->hw.conf.dynamic_ps_timeout = timeout;
+
+ /* If the TIM IE is invalid, pretend the value is 1 */
+ if (!dtimper)
+ dtimper = 1;
+
+ local->hw.conf.ps_dtim_period = dtimper;
+ local->ps_sdata = found;
+ } else {
+ local->ps_sdata = NULL;
+ }
+
+ ieee80211_change_ps(local);
+}
+
+void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
+{
+ bool ps_allowed = ieee80211_powersave_allowed(sdata);
+
+ if (sdata->vif.cfg.ps != ps_allowed) {
+ sdata->vif.cfg.ps = ps_allowed;
+ ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_PS);
+ }
+}
+
+void ieee80211_dynamic_ps_disable_work(struct 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_link_data *link =
+ container_of(delayed_work, struct ieee80211_link_data,
+ dfs_cac_timer_work);
+ struct cfg80211_chan_def chandef = link->conf->chandef;
+ struct ieee80211_sub_if_data *sdata = link->sdata;
+
+ mutex_lock(&sdata->local->mtx);
+ if (sdata->wdev.cac_started) {
+ ieee80211_link_release_channel(link);
+ 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->deflink, ac,
+ &sdata->deflink.tx_conf[ac]))
+ link_err(&sdata->deflink,
+ "failed to set TX queue parameters for queue %d\n",
+ ac);
+ tx_tspec->action = TX_TSPEC_ACTION_NONE;
+ tx_tspec->downgraded = false;
+ ret = true;
+ break;
+ case TX_TSPEC_ACTION_DOWNGRADE:
+ if (time_after(now, tx_tspec->time_slice_start + HZ)) {
+ tx_tspec->action = TX_TSPEC_ACTION_NONE;
+ ret = true;
+ break;
+ }
+ /* downgrade next lower non-ACM AC */
+ for (non_acm_ac = ac + 1;
+ non_acm_ac < IEEE80211_NUM_ACS;
+ non_acm_ac++)
+ if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac)))
+ break;
+ /* Usually the loop will result in using BK even if it
+ * requires admission control, but such a configuration
+ * makes no sense and we have to transmit somehow - the
+ * AC selection does the same thing.
+ * If we started out trying to downgrade from BK, then
+ * the extra condition here might be needed.
+ */
+ if (non_acm_ac >= IEEE80211_NUM_ACS)
+ non_acm_ac = IEEE80211_AC_BK;
+ if (drv_conf_tx(local, &sdata->deflink, ac,
+ &sdata->deflink.tx_conf[non_acm_ac]))
+ link_err(&sdata->deflink,
+ "failed to set TX queue parameters for queue %d\n",
+ ac);
+ tx_tspec->action = TX_TSPEC_ACTION_NONE;
+ ret = true;
+ 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_link_info_change_notify(sdata, &sdata->deflink,
+ 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);
+}
+
+void ieee80211_mgd_set_link_qos_params(struct ieee80211_link_data *link)
+{
+ struct ieee80211_sub_if_data *sdata = link->sdata;
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_tx_queue_params *params = link->tx_conf;
+ u8 ac;
+
+ for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
+ mlme_dbg(sdata,
+ "WMM AC=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n",
+ ac, params[ac].acm,
+ params[ac].aifs, params[ac].cw_min, params[ac].cw_max,
+ params[ac].txop, params[ac].uapsd,
+ ifmgd->tx_tspec[ac].downgraded);
+ if (!ifmgd->tx_tspec[ac].downgraded &&
+ drv_conf_tx(local, link, ac, &params[ac]))
+ link_err(link,
+ "failed to set TX queue parameters for AC %d\n",
+ ac);
+ }
+}
+
+/* MLME */
+static bool
+ieee80211_sta_wmm_params(struct ieee80211_local *local,
+ struct ieee80211_link_data *link,
+ const u8 *wmm_param, size_t wmm_param_len,
+ const struct ieee80211_mu_edca_param_set *mu_edca)
+{
+ struct ieee80211_sub_if_data *sdata = link->sdata;
+ struct ieee80211_tx_queue_params params[IEEE80211_NUM_ACS];
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ size_t left;
+ int count, mu_edca_count, ac;
+ const u8 *pos;
+ u8 uapsd_queues = 0;
+
+ if (!local->ops->conf_tx)
+ return false;
+
+ if (local->hw.queues < IEEE80211_NUM_ACS)
+ return false;
+
+ if (!wmm_param)
+ return false;
+
+ if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
+ return false;
+
+ if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
+ uapsd_queues = ifmgd->uapsd_queues;
+
+ count = wmm_param[6] & 0x0f;
+ /* -1 is the initial value of ifmgd->mu_edca_last_param_set.
+ * if mu_edca was preset before and now it disappeared tell
+ * the driver about it.
+ */
+ mu_edca_count = mu_edca ? mu_edca->mu_qos_info & 0x0f : -1;
+ if (count == link->u.mgd.wmm_last_param_set &&
+ mu_edca_count == link->u.mgd.mu_edca_last_param_set)
+ return false;
+ link->u.mgd.wmm_last_param_set = count;
+ link->u.mgd.mu_edca_last_param_set = mu_edca_count;
+
+ pos = wmm_param + 8;
+ left = wmm_param_len - 8;
+
+ memset(&params, 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, &params[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++)
+ link->tx_conf[ac] = params[ac];
+
+ ieee80211_mgd_set_link_qos_params(link);
+
+ /* enable WMM or activate new settings */
+ link->conf->qos = true;
+ return true;
+}
+
+static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
+{
+ lockdep_assert_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_link_data *link,
+ u16 capab, bool erp_valid, u8 erp)
+{
+ struct ieee80211_bss_conf *bss_conf = link->conf;
+ struct ieee80211_supported_band *sband;
+ u32 changed = 0;
+ bool use_protection;
+ bool use_short_preamble;
+ bool use_short_slot;
+
+ sband = ieee80211_get_link_sband(link);
+ if (!sband)
+ return changed;
+
+ if (erp_valid) {
+ use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
+ use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
+ } else {
+ use_protection = false;
+ use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
+ }
+
+ use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
+ if (sband->band == NL80211_BAND_5GHZ ||
+ sband->band == NL80211_BAND_6GHZ)
+ use_short_slot = true;
+
+ if (use_protection != bss_conf->use_cts_prot) {
+ bss_conf->use_cts_prot = use_protection;
+ changed |= BSS_CHANGED_ERP_CTS_PROT;
+ }
+
+ if (use_short_preamble != bss_conf->use_short_preamble) {
+ bss_conf->use_short_preamble = use_short_preamble;
+ changed |= BSS_CHANGED_ERP_PREAMBLE;
+ }
+
+ if (use_short_slot != bss_conf->use_short_slot) {
+ bss_conf->use_short_slot = use_short_slot;
+ changed |= BSS_CHANGED_ERP_SLOT;
+ }
+
+ return changed;
+}
+
+static u32 ieee80211_link_set_associated(struct ieee80211_link_data *link,
+ struct cfg80211_bss *cbss)
+{
+ struct ieee80211_sub_if_data *sdata = link->sdata;
+ struct ieee80211_bss_conf *bss_conf = link->conf;
+ struct ieee80211_bss *bss = (void *)cbss->priv;
+ u32 changed = BSS_CHANGED_QOS;
+
+ /* not really used in MLO */
+ sdata->u.mgd.beacon_timeout =
+ usecs_to_jiffies(ieee80211_tu_to_usec(beacon_loss_count *
+ bss_conf->beacon_int));
+
+ changed |= ieee80211_handle_bss_capability(link,
+ bss_conf->assoc_capability,
+ bss->has_erp_value,
+ bss->erp_value);
+
+ ieee80211_check_rate_mask(link);
+
+ link->u.mgd.bss = cbss;
+ memcpy(link->u.mgd.bssid, cbss->bssid, ETH_ALEN);
+
+ if (sdata->vif.p2p ||
+ sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
+ const struct cfg80211_bss_ies *ies;
+
+ rcu_read_lock();
+ ies = rcu_dereference(cbss->ies);
+ if (ies) {
+ int ret;
+
+ ret = cfg80211_get_p2p_attr(
+ ies->data, ies->len,
+ IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
+ (u8 *) &bss_conf->p2p_noa_attr,
+ sizeof(bss_conf->p2p_noa_attr));
+ if (ret >= 2) {
+ link->u.mgd.p2p_noa_index =
+ bss_conf->p2p_noa_attr.index;
+ changed |= BSS_CHANGED_P2P_PS;
+ }
+ }
+ rcu_read_unlock();
+ }
+
+ if (link->u.mgd.have_beacon) {
+ /*
+ * 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 = link->u.mgd.dtim_period ?: 1;
+ bss_conf->beacon_rate = bss->beacon_rate;
+ changed |= BSS_CHANGED_BEACON_INFO;
+ } else {
+ bss_conf->beacon_rate = NULL;
+ bss_conf->dtim_period = 0;
+ }
+
+ /* Tell the driver to monitor connection quality (if supported) */
+ if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
+ bss_conf->cqm_rssi_thold)
+ changed |= BSS_CHANGED_CQM;
+
+ return changed;
+}
+
+static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_mgd_assoc_data *assoc_data,
+ u64 changed[IEEE80211_MLD_MAX_NUM_LINKS])
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_vif_cfg *vif_cfg = &sdata->vif.cfg;
+ u64 vif_changed = BSS_CHANGED_ASSOC;
+ unsigned int link_id;
+
+ sdata->u.mgd.associated = true;
+
+ for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
+ struct cfg80211_bss *cbss = assoc_data->link[link_id].bss;
+ struct ieee80211_link_data *link;
+
+ if (!cbss)
+ continue;
+
+ link = sdata_dereference(sdata->link[link_id], sdata);
+ if (WARN_ON(!link))
+ return;
+
+ changed[link_id] |= ieee80211_link_set_associated(link, cbss);
+ }
+
+ /* just to be sure */
+ ieee80211_stop_poll(sdata);
+
+ ieee80211_led_assoc(local, 1);
+
+ vif_cfg->assoc = 1;
+
+ /* Enable ARP filtering */
+ if (vif_cfg->arp_addr_cnt)
+ vif_changed |= BSS_CHANGED_ARP_FILTER;
+
+ if (sdata->vif.valid_links) {
+ for (link_id = 0;
+ link_id < IEEE80211_MLD_MAX_NUM_LINKS;
+ link_id++) {
+ struct ieee80211_link_data *link;
+ struct cfg80211_bss *cbss = assoc_data->link[link_id].bss;
+
+ if (!cbss)
+ continue;
+
+ link = sdata_dereference(sdata->link[link_id], sdata);
+ if (WARN_ON(!link))
+ return;
+
+ ieee80211_link_info_change_notify(sdata, link,
+ changed[link_id]);
+
+ ieee80211_recalc_smps(sdata, link);
+ }
+
+ ieee80211_vif_cfg_change_notify(sdata, vif_changed);
+ } else {
+ ieee80211_bss_info_change_notify(sdata,
+ vif_changed | changed[0]);
+ }
+
+ mutex_lock(&local->iflist_mtx);
+ ieee80211_recalc_ps(local);
+ mutex_unlock(&local->iflist_mtx);
+
+ /* leave this here to not change ordering in non-MLO cases */
+ if (!sdata->vif.valid_links)
+ ieee80211_recalc_smps(sdata, &sdata->deflink);
+ ieee80211_recalc_ps_vif(sdata);
+
+ netif_carrier_on(sdata->dev);
+}
+
+static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
+ u16 stype, u16 reason, bool tx,
+ u8 *frame_buf)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_local *local = sdata->local;
+ unsigned int link_id;
+ u32 changed = 0;
+ struct ieee80211_prep_tx_info info = {
+ .subtype = stype,
+ };
+
+ sdata_assert_lock(sdata);
+
+ if (WARN_ON_ONCE(tx && !frame_buf))
+ return;
+
+ if (WARN_ON(!ifmgd->associated))
+ return;
+
+ ieee80211_stop_poll(sdata);
+
+ ifmgd->associated = false;
+
+ /* other links will be destroyed */
+ sdata->deflink.u.mgd.bss = NULL;
+
+ netif_carrier_off(sdata->dev);
+
+ /*
+ * if we want to get out of ps before disassoc (why?) we have
+ * to do it before sending disassoc, as otherwise the null-packet
+ * won't be valid.
+ */
+ if (local->hw.conf.flags & IEEE80211_CONF_PS) {
+ local->hw.conf.flags &= ~IEEE80211_CONF_PS;
+ ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
+ }
+ local->ps_sdata = NULL;
+
+ /* disable per-vif ps */
+ ieee80211_recalc_ps_vif(sdata);
+
+ /* make sure ongoing transmission finishes */
+ synchronize_net();
+
+ /*
+ * drop any frame before deauth/disassoc, this can be data or
+ * management frame. Since we are disconnecting, we should not
+ * insist sending these frames which can take time and delay
+ * the disconnection and possible the roaming.
+ */
+ if (tx)
+ ieee80211_flush_queues(local, sdata, true);
+
+ /* deauthenticate/disassociate now */
+ if (tx || frame_buf) {
+ /*
+ * In multi channel scenarios guarantee that the virtual
+ * interface is granted immediate airtime to transmit the
+ * deauthentication frame by calling mgd_prepare_tx, if the
+ * driver requested so.
+ */
+ if (ieee80211_hw_check(&local->hw, DEAUTH_NEED_MGD_TX_PREP) &&
+ !sdata->deflink.u.mgd.have_beacon) {
+ drv_mgd_prepare_tx(sdata->local, sdata, &info);
+ }
+
+ ieee80211_send_deauth_disassoc(sdata, sdata->vif.cfg.ap_addr,
+ sdata->vif.cfg.ap_addr, stype,
+ reason, tx, frame_buf);
+ }
+
+ /* flush out frame - make sure the deauth was actually sent */
+ if (tx)
+ ieee80211_flush_queues(local, sdata, false);
+
+ drv_mgd_complete_tx(sdata->local, sdata, &info);
+
+ /* clear AP addr only after building the needed mgmt frames */
+ eth_zero_addr(sdata->deflink.u.mgd.bssid);
+ eth_zero_addr(sdata->vif.cfg.ap_addr);
+
+ sdata->vif.cfg.ssid_len = 0;
+
+ /* remove AP and TDLS peers */
+ sta_info_flush(sdata);
+
+ /* finally reset all BSS / config parameters */
+ if (!sdata->vif.valid_links)
+ changed |= ieee80211_reset_erp_info(sdata);
+
+ ieee80211_led_assoc(local, 0);
+ changed |= BSS_CHANGED_ASSOC;
+ sdata->vif.cfg.assoc = false;
+
+ sdata->deflink.u.mgd.p2p_noa_index = -1;
+ memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
+ sizeof(sdata->vif.bss_conf.p2p_noa_attr));
+
+ /* on the next assoc, re-program HT/VHT parameters */
+ memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
+ memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
+ memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa));
+ memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask));
+
+ /*
+ * reset MU-MIMO ownership and group data in default link,
+ * if used, other links are destroyed
+ */
+ memset(sdata->vif.bss_conf.mu_group.membership, 0,
+ sizeof(sdata->vif.bss_conf.mu_group.membership));
+ memset(sdata->vif.bss_conf.mu_group.position, 0,
+ sizeof(sdata->vif.bss_conf.mu_group.position));
+ if (!sdata->vif.valid_links)
+ changed |= BSS_CHANGED_MU_GROUPS;
+ sdata->vif.bss_conf.mu_mimo_owner = false;
+
+ sdata->deflink.ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
+
+ del_timer_sync(&local->dynamic_ps_timer);
+ cancel_work_sync(&local->dynamic_ps_enable_work);
+
+ /* Disable ARP filtering */
+ if (sdata->vif.cfg.arp_addr_cnt)
+ changed |= BSS_CHANGED_ARP_FILTER;
+
+ sdata->vif.bss_conf.qos = false;
+ if (!sdata->vif.valid_links) {
+ changed |= BSS_CHANGED_QOS;
+ /* The BSSID (not really interesting) and HT changed */
+ changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
+ ieee80211_bss_info_change_notify(sdata, changed);
+ } else {
+ ieee80211_vif_cfg_change_notify(sdata, changed);
+ }
+
+ /* disassociated - set to defaults now */
+ ieee80211_set_wmm_default(&sdata->deflink, false, false);
+
+ del_timer_sync(&sdata->u.mgd.conn_mon_timer);
+ del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
+ del_timer_sync(&sdata->u.mgd.timer);
+ del_timer_sync(&sdata->deflink.u.mgd.chswitch_timer);
+
+ sdata->vif.bss_conf.dtim_period = 0;
+ sdata->vif.bss_conf.beacon_rate = NULL;
+
+ sdata->deflink.u.mgd.have_beacon = false;
+ sdata->deflink.u.mgd.tracking_signal_avg = false;
+ sdata->deflink.u.mgd.disable_wmm_tracking = false;
+
+ ifmgd->flags = 0;
+ sdata->deflink.u.mgd.conn_flags = 0;
+ mutex_lock(&local->mtx);
+
+ for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) {
+ struct ieee80211_link_data *link;
+
+ link = sdata_dereference(sdata->link[link_id], sdata);
+ if (!link)
+ continue;
+ ieee80211_link_release_channel(link);
+ }
+
+ sdata->vif.bss_conf.csa_active = false;
+ sdata->deflink.u.mgd.csa_waiting_bcn = false;
+ sdata->deflink.u.mgd.csa_ignored_same_chan = false;
+ if (sdata->deflink.csa_block_tx) {
+ ieee80211_wake_vif_queues(local, sdata,
+ IEEE80211_QUEUE_STOP_REASON_CSA);
+ sdata->deflink.csa_block_tx = false;
+ }
+ 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->vif.bss_conf.pwr_reduction = 0;
+ sdata->vif.bss_conf.tx_pwr_env_num = 0;
+ memset(sdata->vif.bss_conf.tx_pwr_env, 0,
+ sizeof(sdata->vif.bss_conf.tx_pwr_env));
+
+ ieee80211_vif_set_links(sdata, 0);
+}
+
+static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_local *local = sdata->local;
+
+ 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;
+ int ac;
+ struct ieee80211_sta_tx_tspec *tx_tspec;
+ unsigned long now = jiffies;
+
+ if (!ieee80211_is_data_qos(hdr->frame_control))
+ return;
+
+ tid = ieee80211_get_tid(hdr);
+ ac = ieee80211_ac_from_tid(tid);
+ tx_tspec = &ifmgd->tx_tspec[ac];
+
+ if (likely(!tx_tspec->admitted_time))
+ return;
+
+ if (time_after(now, tx_tspec->time_slice_start + HZ)) {
+ tx_tspec->consumed_tx_time = 0;
+ tx_tspec->time_slice_start = now;
+
+ if (tx_tspec->downgraded) {
+ tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
+ 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;
+ u8 *dst = sdata->vif.cfg.ap_addr;
+ u8 unicast_limit = max(1, max_probe_tries - 3);
+ struct sta_info *sta;
+
+ if (WARN_ON(sdata->vif.valid_links))
+ return;
+
+ /*
+ * Try sending broadcast probe requests for the last three
+ * probe requests after the first ones failed since some
+ * buggy APs only support broadcast probe requests.
+ */
+ if (ifmgd->probe_send_count >= unicast_limit)
+ dst = NULL;
+
+ /*
+ * When the hardware reports an accurate Tx ACK status, it's
+ * better to send a nullfunc frame instead of a probe request,
+ * as it will kick us off the AP quickly if we aren't associated
+ * anymore. The timeout will be reset if the frame is ACKed by
+ * the AP.
+ */
+ ifmgd->probe_send_count++;
+
+ if (dst) {
+ 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;
+ ieee80211_send_nullfunc(sdata->local, sdata, false);
+ } else {
+ ieee80211_mlme_send_probe_req(sdata, sdata->vif.addr, dst,
+ sdata->vif.cfg.ssid,
+ sdata->vif.cfg.ssid_len,
+ sdata->deflink.u.mgd.bss->channel);
+ }
+
+ ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
+ run_again(sdata, ifmgd->probe_timeout);
+}
+
+static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
+ bool beacon)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ bool already = false;
+
+ if (WARN_ON(sdata->vif.valid_links))
+ return;
+
+ 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 (sdata->local->suspending) {
+ /* reschedule after resume */
+ mutex_unlock(&sdata->local->mtx);
+ ieee80211_reset_ap_probe(sdata);
+ 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 struct element *ssid;
+ int ssid_len;
+
+ if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION ||
+ sdata->vif.valid_links))
+ return NULL;
+
+ sdata_assert_lock(sdata);
+
+ if (ifmgd->associated)
+ cbss = sdata->deflink.u.mgd.bss;
+ else if (ifmgd->auth_data)
+ cbss = ifmgd->auth_data->bss;
+ else if (ifmgd->assoc_data && ifmgd->assoc_data->link[0].bss)
+ cbss = ifmgd->assoc_data->link[0].bss;
+ else
+ return NULL;
+
+ rcu_read_lock();
+ ssid = ieee80211_bss_get_elem(cbss, WLAN_EID_SSID);
+ if (WARN_ONCE(!ssid || ssid->datalen > IEEE80211_MAX_SSID_LEN,
+ "invalid SSID element (len=%d)",
+ ssid ? ssid->datalen : -1))
+ ssid_len = 0;
+ else
+ ssid_len = ssid->datalen;
+
+ skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid,
+ (u32) -1, cbss->channel,
+ ssid->data, ssid_len,
+ NULL, 0, IEEE80211_PROBE_FLAG_DIRECTED);
+ rcu_read_unlock();
+
+ return skb;
+}
+EXPORT_SYMBOL(ieee80211_ap_probereq_get);
+
+static void ieee80211_report_disconnect(struct ieee80211_sub_if_data *sdata,
+ const u8 *buf, size_t len, bool tx,
+ u16 reason, bool reconnect)
+{
+ struct ieee80211_event event = {
+ .type = MLME_EVENT,
+ .u.mlme.data = tx ? DEAUTH_TX_EVENT : DEAUTH_RX_EVENT,
+ .u.mlme.reason = reason,
+ };
+
+ if (tx)
+ cfg80211_tx_mlme_mgmt(sdata->dev, buf, len, reconnect);
+ else
+ cfg80211_rx_mlme_mgmt(sdata->dev, buf, len);
+
+ drv_event_callback(sdata->local, sdata, &event);
+}
+
+static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
+ bool tx;
+
+ sdata_lock(sdata);
+ if (!ifmgd->associated) {
+ sdata_unlock(sdata);
+ return;
+ }
+
+ /* in MLO assume we have a link where we can TX the frame */
+ tx = sdata->vif.valid_links || !sdata->deflink.csa_block_tx;
+
+ if (!ifmgd->driver_disconnect) {
+ unsigned int link_id;
+
+ /*
+ * AP is probably out of range (or not reachable for another
+ * reason) so remove the bss structs for that AP. In the case
+ * of multi-link, it's not clear that all of them really are
+ * out of range, but if they weren't the driver likely would
+ * have switched to just have a single link active?
+ */
+ for (link_id = 0;
+ link_id < ARRAY_SIZE(sdata->link);
+ link_id++) {
+ struct ieee80211_link_data *link;
+
+ link = sdata_dereference(sdata->link[link_id], sdata);
+ if (!link)
+ continue;
+ cfg80211_unlink_bss(local->hw.wiphy, link->u.mgd.bss);
+ link->u.mgd.bss = NULL;
+ }
+ }
+
+ ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
+ ifmgd->driver_disconnect ?
+ WLAN_REASON_DEAUTH_LEAVING :
+ WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
+ tx, frame_buf);
+ mutex_lock(&local->mtx);
+ /* the other links will be destroyed */
+ sdata->vif.bss_conf.csa_active = false;
+ sdata->deflink.u.mgd.csa_waiting_bcn = false;
+ if (sdata->deflink.csa_block_tx) {
+ ieee80211_wake_vif_queues(local, sdata,
+ IEEE80211_QUEUE_STOP_REASON_CSA);
+ sdata->deflink.csa_block_tx = false;
+ }
+ 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->connection_loss) {
+ sdata_info(sdata, "Connection to AP %pM lost\n",
+ sdata->vif.cfg.ap_addr);
+ __ieee80211_disconnect(sdata);
+ ifmgd->connection_loss = false;
+ } else if (ifmgd->driver_disconnect) {
+ sdata_info(sdata,
+ "Driver requested disconnection from AP %pM\n",
+ sdata->vif.cfg.ap_addr);
+ __ieee80211_disconnect(sdata);
+ ifmgd->driver_disconnect = false;
+ } else {
+ if (ifmgd->associated)
+ sdata->deflink.u.mgd.beacon_loss_count++;
+ ieee80211_mgd_probe_ap(sdata, true);
+ }
+}
+
+static void ieee80211_csa_connection_drop_work(struct 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->ap_addr);
+
+ /* other links are destroyed */
+ sdata->deflink.u.mgd.conn_flags = 0;
+ eth_zero_addr(sdata->deflink.u.mgd.bssid);
+ ieee80211_link_info_change_notify(sdata, &sdata->deflink,
+ BSS_CHANGED_BSSID);
+ sdata->u.mgd.flags = 0;
+
+ mutex_lock(&sdata->local->mtx);
+ ieee80211_link_release_channel(&sdata->deflink);
+ ieee80211_vif_set_links(sdata, 0);
+ mutex_unlock(&sdata->local->mtx);
+ }
+
+ cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
+ kfree(auth_data);
+ sdata->u.mgd.auth_data = NULL;
+}
+
+enum assoc_status {
+ ASSOC_SUCCESS,
+ ASSOC_REJECTED,
+ ASSOC_TIMEOUT,
+ ASSOC_ABANDON,
+};
+
+static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
+ enum assoc_status status)
+{
+ struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
+
+ sdata_assert_lock(sdata);
+
+ if (status != ASSOC_SUCCESS) {
+ /*
+ * we are not associated yet, the only timer that could be
+ * running is the timeout for the association response which
+ * which is not relevant anymore.
+ */
+ del_timer_sync(&sdata->u.mgd.timer);
+ sta_info_destroy_addr(sdata, assoc_data->ap_addr);
+
+ sdata->deflink.u.mgd.conn_flags = 0;
+ eth_zero_addr(sdata->deflink.u.mgd.bssid);
+ ieee80211_link_info_change_notify(sdata, &sdata->deflink,
+ BSS_CHANGED_BSSID);
+ sdata->u.mgd.flags = 0;
+ sdata->vif.bss_conf.mu_mimo_owner = false;
+
+ if (status != ASSOC_REJECTED) {
+ struct cfg80211_assoc_failure data = {
+ .timeout = status == ASSOC_TIMEOUT,
+ };
+ int i;
+
+ BUILD_BUG_ON(ARRAY_SIZE(data.bss) !=
+ ARRAY_SIZE(assoc_data->link));
+
+ for (i = 0; i < ARRAY_SIZE(data.bss); i++)
+ data.bss[i] = assoc_data->link[i].bss;
+
+ if (sdata->vif.valid_links)
+ data.ap_mld_addr = assoc_data->ap_addr;
+
+ cfg80211_assoc_failure(sdata->dev, &data);
+ }
+
+ mutex_lock(&sdata->local->mtx);
+ ieee80211_link_release_channel(&sdata->deflink);
+ ieee80211_vif_set_links(sdata, 0);
+ mutex_unlock(&sdata->local->mtx);
+ }
+
+ kfree(assoc_data);
+ sdata->u.mgd.assoc_data = NULL;
+}
+
+static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_mgmt *mgmt, size_t len)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
+ const struct element *challenge;
+ u8 *pos;
+ u32 tx_flags = 0;
+ struct ieee80211_prep_tx_info info = {
+ .subtype = IEEE80211_STYPE_AUTH,
+ };
+
+ pos = mgmt->u.auth.variable;
+ challenge = cfg80211_find_elem(WLAN_EID_CHALLENGE, pos,
+ len - (pos - (u8 *)mgmt));
+ if (!challenge)
+ return;
+ auth_data->expected_transaction = 4;
+ drv_mgd_prepare_tx(sdata->local, sdata, &info);
+ if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
+ tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
+ IEEE80211_TX_INTFL_MLME_CONN_TX;
+ ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
+ (void *)challenge,
+ challenge->datalen + sizeof(*challenge),
+ auth_data->ap_addr, auth_data->ap_addr,
+ auth_data->key, auth_data->key_len,
+ auth_data->key_idx, tx_flags);
+}
+
+static bool ieee80211_mark_sta_auth(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ const u8 *ap_addr = ifmgd->auth_data->ap_addr;
+ struct sta_info *sta;
+ 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, ap_addr);
+ if (!sta) {
+ WARN_ONCE(1, "%s: STA %pM not found", sdata->name, ap_addr);
+ result = false;
+ goto out;
+ }
+ if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
+ sdata_info(sdata, "failed moving %pM to auth\n", ap_addr);
+ 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;
+ u16 auth_alg, auth_transaction, status_code;
+ struct ieee80211_event event = {
+ .type = MLME_EVENT,
+ .u.mlme.data = AUTH_EVENT,
+ };
+ struct ieee80211_prep_tx_info info = {
+ .subtype = IEEE80211_STYPE_AUTH,
+ };
+
+ sdata_assert_lock(sdata);
+
+ if (len < 24 + 6)
+ return;
+
+ if (!ifmgd->auth_data || ifmgd->auth_data->done)
+ return;
+
+ if (!ether_addr_equal(ifmgd->auth_data->ap_addr, mgmt->bssid))
+ return;
+
+ auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
+ auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
+ status_code = le16_to_cpu(mgmt->u.auth.status_code);
+
+ if (auth_alg != ifmgd->auth_data->algorithm ||
+ (auth_alg != WLAN_AUTH_SAE &&
+ auth_transaction != ifmgd->auth_data->expected_transaction) ||
+ (auth_alg == WLAN_AUTH_SAE &&
+ (auth_transaction < ifmgd->auth_data->expected_transaction ||
+ auth_transaction > 2))) {
+ sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
+ mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
+ auth_transaction,
+ ifmgd->auth_data->expected_transaction);
+ goto notify_driver;
+ }
+
+ if (status_code != WLAN_STATUS_SUCCESS) {
+ cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
+
+ if (auth_alg == WLAN_AUTH_SAE &&
+ (status_code == WLAN_STATUS_ANTI_CLOG_REQUIRED ||
+ (auth_transaction == 1 &&
+ (status_code == WLAN_STATUS_SAE_HASH_TO_ELEMENT ||
+ status_code == WLAN_STATUS_SAE_PK)))) {
+ /* waiting for userspace now */
+ ifmgd->auth_data->waiting = true;
+ ifmgd->auth_data->timeout =
+ jiffies + IEEE80211_AUTH_WAIT_SAE_RETRY;
+ ifmgd->auth_data->timeout_started = true;
+ run_again(sdata, ifmgd->auth_data->timeout);
+ goto notify_driver;
+ }
+
+ sdata_info(sdata, "%pM denied authentication (status %d)\n",
+ mgmt->sa, status_code);
+ ieee80211_destroy_auth_data(sdata, false);
+ event.u.mlme.status = MLME_DENIED;
+ event.u.mlme.reason = status_code;
+ drv_event_callback(sdata->local, sdata, &event);
+ goto notify_driver;
+ }
+
+ switch (ifmgd->auth_data->algorithm) {
+ case WLAN_AUTH_OPEN:
+ case WLAN_AUTH_LEAP:
+ case WLAN_AUTH_FT:
+ case WLAN_AUTH_SAE:
+ case WLAN_AUTH_FILS_SK:
+ case WLAN_AUTH_FILS_SK_PFS:
+ case WLAN_AUTH_FILS_PK:
+ break;
+ case WLAN_AUTH_SHARED_KEY:
+ if (ifmgd->auth_data->expected_transaction != 4) {
+ ieee80211_auth_challenge(sdata, mgmt, len);
+ /* need another frame */
+ return;
+ }
+ break;
+ default:
+ WARN_ONCE(1, "invalid auth alg %d",
+ ifmgd->auth_data->algorithm);
+ goto notify_driver;
+ }
+
+ event.u.mlme.status = MLME_SUCCESS;
+ info.success = 1;
+ drv_event_callback(sdata->local, sdata, &event);
+ if (ifmgd->auth_data->algorithm != WLAN_AUTH_SAE ||
+ (auth_transaction == 2 &&
+ ifmgd->auth_data->expected_transaction == 2)) {
+ if (!ieee80211_mark_sta_auth(sdata))
+ return; /* ignore frame -- wait for timeout */
+ } else if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
+ auth_transaction == 2) {
+ sdata_info(sdata, "SAE peer confirmed\n");
+ ifmgd->auth_data->peer_confirmed = true;
+ }
+
+ cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
+notify_driver:
+ drv_mgd_complete_tx(sdata->local, sdata, &info);
+}
+
+#define case_WLAN(type) \
+ case WLAN_REASON_##type: return #type
+
+const char *ieee80211_get_reason_code_string(u16 reason_code)
+{
+ switch (reason_code) {
+ case_WLAN(UNSPECIFIED);
+ case_WLAN(PREV_AUTH_NOT_VALID);
+ case_WLAN(DEAUTH_LEAVING);
+ case_WLAN(DISASSOC_DUE_TO_INACTIVITY);
+ case_WLAN(DISASSOC_AP_BUSY);
+ case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA);
+ case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA);
+ case_WLAN(DISASSOC_STA_HAS_LEFT);
+ case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH);
+ case_WLAN(DISASSOC_BAD_POWER);
+ case_WLAN(DISASSOC_BAD_SUPP_CHAN);
+ case_WLAN(INVALID_IE);
+ case_WLAN(MIC_FAILURE);
+ case_WLAN(4WAY_HANDSHAKE_TIMEOUT);
+ case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT);
+ case_WLAN(IE_DIFFERENT);
+ case_WLAN(INVALID_GROUP_CIPHER);
+ case_WLAN(INVALID_PAIRWISE_CIPHER);
+ case_WLAN(INVALID_AKMP);
+ case_WLAN(UNSUPP_RSN_VERSION);
+ case_WLAN(INVALID_RSN_IE_CAP);
+ case_WLAN(IEEE8021X_FAILED);
+ case_WLAN(CIPHER_SUITE_REJECTED);
+ case_WLAN(DISASSOC_UNSPECIFIED_QOS);
+ case_WLAN(DISASSOC_QAP_NO_BANDWIDTH);
+ case_WLAN(DISASSOC_LOW_ACK);
+ case_WLAN(DISASSOC_QAP_EXCEED_TXOP);
+ case_WLAN(QSTA_LEAVE_QBSS);
+ case_WLAN(QSTA_NOT_USE);
+ case_WLAN(QSTA_REQUIRE_SETUP);
+ case_WLAN(QSTA_TIMEOUT);
+ case_WLAN(QSTA_CIPHER_NOT_SUPP);
+ case_WLAN(MESH_PEER_CANCELED);
+ case_WLAN(MESH_MAX_PEERS);
+ case_WLAN(MESH_CONFIG);
+ case_WLAN(MESH_CLOSE);
+ case_WLAN(MESH_MAX_RETRIES);
+ case_WLAN(MESH_CONFIRM_TIMEOUT);
+ case_WLAN(MESH_INVALID_GTK);
+ case_WLAN(MESH_INCONSISTENT_PARAM);
+ case_WLAN(MESH_INVALID_SECURITY);
+ case_WLAN(MESH_PATH_ERROR);
+ case_WLAN(MESH_PATH_NOFORWARD);
+ case_WLAN(MESH_PATH_DEST_UNREACHABLE);
+ case_WLAN(MAC_EXISTS_IN_MBSS);
+ case_WLAN(MESH_CHAN_REGULATORY);
+ case_WLAN(MESH_CHAN);
+ default: return "<unknown>";
+ }
+}
+
+static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_mgmt *mgmt, size_t len)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
+
+ 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, sdata->vif.cfg.ap_addr)) {
+ sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n",
+ sdata->vif.cfg.ap_addr, reason_code,
+ ieee80211_get_reason_code_string(reason_code));
+
+ ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
+
+ ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false,
+ reason_code, false);
+ return;
+ }
+
+ if (ifmgd->assoc_data &&
+ ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->ap_addr)) {
+ sdata_info(sdata,
+ "deauthenticated from %pM while associating (Reason: %u=%s)\n",
+ ifmgd->assoc_data->ap_addr, reason_code,
+ ieee80211_get_reason_code_string(reason_code));
+
+ ieee80211_destroy_assoc_data(sdata, ASSOC_ABANDON);
+
+ cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
+ return;
+ }
+}
+
+
+static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_mgmt *mgmt, size_t len)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ u16 reason_code;
+
+ sdata_assert_lock(sdata);
+
+ if (len < 24 + 2)
+ return;
+
+ if (!ifmgd->associated ||
+ !ether_addr_equal(mgmt->bssid, sdata->vif.cfg.ap_addr))
+ return;
+
+ reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
+
+ if (!ether_addr_equal(mgmt->bssid, mgmt->sa)) {
+ ieee80211_tdls_handle_disconnect(sdata, mgmt->sa, reason_code);
+ return;
+ }
+
+ sdata_info(sdata, "disassociated from %pM (Reason: %u=%s)\n",
+ sdata->vif.cfg.ap_addr, reason_code,
+ ieee80211_get_reason_code_string(reason_code));
+
+ ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
+
+ ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, reason_code,
+ false);
+}
+
+static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
+ u8 *supp_rates, unsigned int supp_rates_len,
+ u32 *rates, u32 *basic_rates,
+ bool *have_higher_than_11mbit,
+ int *min_rate, int *min_rate_index,
+ int 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 link_sta_info *link_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 link_sta->pub->he_cap.he_cap_elem.mac_cap_info[0] &
+ IEEE80211_HE_MAC_CAP0_TWT_RES;
+}
+
+static int ieee80211_recalc_twt_req(struct ieee80211_link_data *link,
+ struct link_sta_info *link_sta,
+ struct ieee802_11_elems *elems)
+{
+ bool twt = ieee80211_twt_req_supported(link_sta, elems);
+
+ if (link->conf->twt_requester != twt) {
+ link->conf->twt_requester = twt;
+ return BSS_CHANGED_TWT;
+ }
+ return 0;
+}
+
+static bool ieee80211_twt_bcast_support(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_bss_conf *bss_conf,
+ struct ieee80211_supported_band *sband,
+ struct link_sta_info *link_sta)
+{
+ const struct ieee80211_sta_he_cap *own_he_cap =
+ ieee80211_get_he_iftype_cap(sband,
+ ieee80211_vif_type_p2p(&sdata->vif));
+
+ return bss_conf->he_support &&
+ (link_sta->pub->he_cap.he_cap_elem.mac_cap_info[2] &
+ IEEE80211_HE_MAC_CAP2_BCAST_TWT) &&
+ own_he_cap &&
+ (own_he_cap->he_cap_elem.mac_cap_info[2] &
+ IEEE80211_HE_MAC_CAP2_BCAST_TWT);
+}
+
+static bool ieee80211_assoc_config_link(struct ieee80211_link_data *link,
+ struct link_sta_info *link_sta,
+ struct cfg80211_bss *cbss,
+ struct ieee80211_mgmt *mgmt,
+ const u8 *elem_start,
+ unsigned int elem_len,
+ u64 *changed)
+{
+ struct ieee80211_sub_if_data *sdata = link->sdata;
+ struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
+ struct ieee80211_bss_conf *bss_conf = link->conf;
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_elems_parse_params parse_params = {
+ .start = elem_start,
+ .len = elem_len,
+ .bss = cbss,
+ .link_id = link == &sdata->deflink ? -1 : link->link_id,
+ .from_ap = true,
+ };
+ bool is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ;
+ bool is_s1g = cbss->channel->band == NL80211_BAND_S1GHZ;
+ const struct cfg80211_bss_ies *bss_ies = NULL;
+ struct ieee80211_supported_band *sband;
+ struct ieee802_11_elems *elems;
+ u16 capab_info;
+ bool ret;
+
+ elems = ieee802_11_parse_elems_full(&parse_params);
+ if (!elems)
+ return false;
+
+ /* FIXME: use from STA profile element after parsing that */
+ capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
+
+ if (!is_s1g && !elems->supp_rates) {
+ sdata_info(sdata, "no SuppRates element in AssocResp\n");
+ ret = false;
+ goto out;
+ }
+
+ link->u.mgd.tdls_chan_switch_prohibited =
+ elems->ext_capab && elems->ext_capab_len >= 5 &&
+ (elems->ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED);
+
+ /*
+ * Some APs are erroneously not including some information in their
+ * (re)association response frames. Try to recover by using the data
+ * from the beacon or probe response. This seems to afflict mobile
+ * 2G/3G/4G wifi routers, reported models include the "Onda PN51T",
+ * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device.
+ */
+ if (!is_6ghz &&
+ ((assoc_data->wmm && !elems->wmm_param) ||
+ (!(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HT) &&
+ (!elems->ht_cap_elem || !elems->ht_operation)) ||
+ (!(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_VHT) &&
+ (!elems->vht_cap_elem || !elems->vht_operation)))) {
+ const struct cfg80211_bss_ies *ies;
+ struct ieee802_11_elems *bss_elems;
+
+ rcu_read_lock();
+ ies = rcu_dereference(cbss->ies);
+ if (ies)
+ bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
+ GFP_ATOMIC);
+ rcu_read_unlock();
+ if (!bss_ies) {
+ ret = false;
+ goto out;
+ }
+
+ parse_params.start = bss_ies->data;
+ parse_params.len = bss_ies->len;
+ bss_elems = ieee802_11_parse_elems_full(&parse_params);
+ if (!bss_elems) {
+ ret = false;
+ goto out;
+ }
+
+ if (assoc_data->wmm &&
+ !elems->wmm_param && bss_elems->wmm_param) {
+ elems->wmm_param = bss_elems->wmm_param;
+ sdata_info(sdata,
+ "AP bug: WMM param missing from AssocResp\n");
+ }
+
+ /*
+ * Also check if we requested HT/VHT, otherwise the AP doesn't
+ * have to include the IEs in the (re)association response.
+ */
+ if (!elems->ht_cap_elem && bss_elems->ht_cap_elem &&
+ !(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HT)) {
+ elems->ht_cap_elem = bss_elems->ht_cap_elem;
+ sdata_info(sdata,
+ "AP bug: HT capability missing from AssocResp\n");
+ }
+ if (!elems->ht_operation && bss_elems->ht_operation &&
+ !(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HT)) {
+ elems->ht_operation = bss_elems->ht_operation;
+ sdata_info(sdata,
+ "AP bug: HT operation missing from AssocResp\n");
+ }
+ if (!elems->vht_cap_elem && bss_elems->vht_cap_elem &&
+ !(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_VHT)) {
+ elems->vht_cap_elem = bss_elems->vht_cap_elem;
+ sdata_info(sdata,
+ "AP bug: VHT capa missing from AssocResp\n");
+ }
+ if (!elems->vht_operation && bss_elems->vht_operation &&
+ !(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_VHT)) {
+ elems->vht_operation = bss_elems->vht_operation;
+ sdata_info(sdata,
+ "AP bug: VHT operation missing from AssocResp\n");
+ }
+
+ kfree(bss_elems);
+ }
+
+ /*
+ * We previously checked these in the beacon/probe response, so
+ * they should be present here. This is just a safety net.
+ */
+ if (!is_6ghz && !(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HT) &&
+ (!elems->wmm_param || !elems->ht_cap_elem || !elems->ht_operation)) {
+ sdata_info(sdata,
+ "HT AP is missing WMM params or HT capability/operation\n");
+ ret = false;
+ goto out;
+ }
+
+ if (!is_6ghz && !(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_VHT) &&
+ (!elems->vht_cap_elem || !elems->vht_operation)) {
+ sdata_info(sdata,
+ "VHT AP is missing VHT capability/operation\n");
+ ret = false;
+ goto out;
+ }
+
+ if (is_6ghz && !(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HE) &&
+ !elems->he_6ghz_capa) {
+ sdata_info(sdata,
+ "HE 6 GHz AP is missing HE 6 GHz band capability\n");
+ ret = false;
+ goto out;
+ }
+
+ if (WARN_ON(!link->conf->chandef.chan)) {
+ ret = false;
+ goto out;
+ }
+ sband = local->hw.wiphy->bands[link->conf->chandef.chan->band];
+
+ if (!(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HE) &&
+ (!elems->he_cap || !elems->he_operation)) {
+ sdata_info(sdata,
+ "HE AP is missing HE capability/operation\n");
+ ret = false;
+ goto out;
+ }
+
+ /* Set up internal HT/VHT capabilities */
+ if (elems->ht_cap_elem && !(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HT))
+ ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
+ elems->ht_cap_elem,
+ link_sta);
+
+ if (elems->vht_cap_elem &&
+ !(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_VHT)) {
+ const struct ieee80211_vht_cap *bss_vht_cap = NULL;
+ const struct cfg80211_bss_ies *ies;
+
+ /*
+ * Cisco AP module 9115 with FW 17.3 has a bug and sends a
+ * too large maximum MPDU length in the association response
+ * (indicating 12k) that it cannot actually process ...
+ * Work around that.
+ */
+ rcu_read_lock();
+ ies = rcu_dereference(cbss->ies);
+ if (ies) {
+ const struct element *elem;
+
+ elem = cfg80211_find_elem(WLAN_EID_VHT_CAPABILITY,
+ ies->data, ies->len);
+ if (elem && elem->datalen >= sizeof(*bss_vht_cap))
+ bss_vht_cap = (const void *)elem->data;
+ }
+
+ ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
+ elems->vht_cap_elem,
+ bss_vht_cap, link_sta);
+ rcu_read_unlock();
+ }
+
+ if (elems->he_operation && !(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HE) &&
+ elems->he_cap) {
+ ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
+ elems->he_cap,
+ elems->he_cap_len,
+ elems->he_6ghz_capa,
+ link_sta);
+
+ bss_conf->he_support = link_sta->pub->he_cap.has_he;
+ if (elems->rsnx && elems->rsnx_len &&
+ (elems->rsnx[0] & WLAN_RSNX_CAPA_PROTECTED_TWT) &&
+ wiphy_ext_feature_isset(local->hw.wiphy,
+ NL80211_EXT_FEATURE_PROTECTED_TWT))
+ bss_conf->twt_protected = true;
+ else
+ bss_conf->twt_protected = false;
+
+ *changed |= ieee80211_recalc_twt_req(link, link_sta, elems);
+
+ if (elems->eht_operation && elems->eht_cap &&
+ !(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_EHT)) {
+ ieee80211_eht_cap_ie_to_sta_eht_cap(sdata, sband,
+ elems->he_cap,
+ elems->he_cap_len,
+ elems->eht_cap,
+ elems->eht_cap_len,
+ link_sta);
+
+ bss_conf->eht_support = link_sta->pub->eht_cap.has_eht;
+ } else {
+ bss_conf->eht_support = false;
+ }
+ } else {
+ bss_conf->he_support = false;
+ bss_conf->twt_requester = false;
+ bss_conf->twt_protected = false;
+ bss_conf->eht_support = false;
+ }
+
+ bss_conf->twt_broadcast =
+ ieee80211_twt_bcast_support(sdata, bss_conf, sband, link_sta);
+
+ if (bss_conf->he_support) {
+ bss_conf->he_bss_color.color =
+ le32_get_bits(elems->he_operation->he_oper_params,
+ IEEE80211_HE_OPERATION_BSS_COLOR_MASK);
+ bss_conf->he_bss_color.partial =
+ le32_get_bits(elems->he_operation->he_oper_params,
+ IEEE80211_HE_OPERATION_PARTIAL_BSS_COLOR);
+ bss_conf->he_bss_color.enabled =
+ !le32_get_bits(elems->he_operation->he_oper_params,
+ IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
+
+ if (bss_conf->he_bss_color.enabled)
+ *changed |= BSS_CHANGED_HE_BSS_COLOR;
+
+ bss_conf->htc_trig_based_pkt_ext =
+ le32_get_bits(elems->he_operation->he_oper_params,
+ IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK);
+ bss_conf->frame_time_rts_th =
+ le32_get_bits(elems->he_operation->he_oper_params,
+ IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
+
+ bss_conf->uora_exists = !!elems->uora_element;
+ if (elems->uora_element)
+ bss_conf->uora_ocw_range = elems->uora_element[0];
+
+ ieee80211_he_op_ie_to_bss_conf(&sdata->vif, elems->he_operation);
+ ieee80211_he_spr_ie_to_bss_conf(&sdata->vif, elems->he_spr);
+ /* TODO: OPEN: what happens if BSS color disable is set? */
+ }
+
+ if (cbss->transmitted_bss) {
+ bss_conf->nontransmitted = true;
+ ether_addr_copy(bss_conf->transmitter_bssid,
+ cbss->transmitted_bss->bssid);
+ bss_conf->bssid_indicator = cbss->max_bssid_indicator;
+ bss_conf->bssid_index = cbss->bssid_index;
+ }
+
+ /*
+ * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data
+ * in their association response, so ignore that data for our own
+ * configuration. If it changed since the last beacon, we'll get the
+ * next beacon and update then.
+ */
+
+ /*
+ * If an operating mode notification IE is present, override the
+ * NSS calculation (that would be done in rate_control_rate_init())
+ * and use the # of streams from that element.
+ */
+ if (elems->opmode_notif &&
+ !(*elems->opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
+ u8 nss;
+
+ nss = *elems->opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
+ nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
+ nss += 1;
+ link_sta->pub->rx_nss = nss;
+ }
+
+ /*
+ * Always handle WMM once after association regardless
+ * of the first value the AP uses. Setting -1 here has
+ * that effect because the AP values is an unsigned
+ * 4-bit value.
+ */
+ link->u.mgd.wmm_last_param_set = -1;
+ link->u.mgd.mu_edca_last_param_set = -1;
+
+ if (link->u.mgd.disable_wmm_tracking) {
+ ieee80211_set_wmm_default(link, false, false);
+ } else if (!ieee80211_sta_wmm_params(local, link, elems->wmm_param,
+ elems->wmm_param_len,
+ elems->mu_edca_param_set)) {
+ /* still enable QoS since we might have HT/VHT */
+ ieee80211_set_wmm_default(link, false, true);
+ /* disable WMM tracking in this case to disable
+ * tracking WMM parameter changes in the beacon if
+ * the parameters weren't actually valid. Doing so
+ * avoids changing parameters very strangely when
+ * the AP is going back and forth between valid and
+ * invalid parameters.
+ */
+ link->u.mgd.disable_wmm_tracking = true;
+ }
+
+ if (elems->max_idle_period_ie) {
+ bss_conf->max_idle_period =
+ le16_to_cpu(elems->max_idle_period_ie->max_idle_period);
+ bss_conf->protected_keep_alive =
+ !!(elems->max_idle_period_ie->idle_options &
+ WLAN_IDLE_OPTIONS_PROTECTED_KEEP_ALIVE);
+ *changed |= BSS_CHANGED_KEEP_ALIVE;
+ } else {
+ bss_conf->max_idle_period = 0;
+ bss_conf->protected_keep_alive = false;
+ }
+
+ /* set assoc capability (AID was already set earlier),
+ * ieee80211_set_associated() will tell the driver */
+ bss_conf->assoc_capability = capab_info;
+
+ ret = true;
+out:
+ kfree(elems);
+ kfree(bss_ies);
+ return ret;
+}
+
+static int ieee80211_mgd_setup_link_sta(struct ieee80211_link_data *link,
+ struct sta_info *sta,
+ struct link_sta_info *link_sta,
+ struct cfg80211_bss *cbss)
+{
+ struct ieee80211_sub_if_data *sdata = link->sdata;
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_bss *bss = (void *)cbss->priv;
+ u32 rates = 0, basic_rates = 0;
+ bool have_higher_than_11mbit = false;
+ int min_rate = INT_MAX, min_rate_index = -1;
+ /* this is clearly wrong for MLO but we'll just remove it later */
+ int shift = ieee80211_vif_get_shift(&sdata->vif);
+ struct ieee80211_supported_band *sband;
+
+ memcpy(link_sta->addr, cbss->bssid, ETH_ALEN);
+ memcpy(link_sta->pub->addr, cbss->bssid, ETH_ALEN);
+
+ /* TODO: S1G Basic Rate Set is expressed elsewhere */
+ if (cbss->channel->band == NL80211_BAND_S1GHZ) {
+ ieee80211_s1g_sta_rate_init(sta);
+ return 0;
+ }
+
+ sband = local->hw.wiphy->bands[cbss->channel->band];
+
+ ieee80211_get_rates(sband, bss->supp_rates, bss->supp_rates_len,
+ &rates, &basic_rates, &have_higher_than_11mbit,
+ &min_rate, &min_rate_index, 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) {
+ link_info(link, "No legacy rates in association response\n");
+ return -EINVAL;
+ } else if (!basic_rates) {
+ link_info(link, "No basic rates, using min rate instead\n");
+ basic_rates = BIT(min_rate_index);
+ }
+
+ if (rates)
+ link_sta->pub->supp_rates[cbss->channel->band] = rates;
+ else
+ link_info(link, "No rates found, keeping mandatory only\n");
+
+ link->conf->basic_rates = basic_rates;
+
+ /* cf. IEEE 802.11 9.2.12 */
+ link->operating_11g_mode = sband->band == NL80211_BAND_2GHZ &&
+ have_higher_than_11mbit;
+
+ return 0;
+}
+
+static u8 ieee80211_max_rx_chains(struct ieee80211_link_data *link,
+ struct cfg80211_bss *cbss)
+{
+ struct ieee80211_he_mcs_nss_supp *he_mcs_nss_supp;
+ const struct element *ht_cap_elem, *vht_cap_elem;
+ const struct cfg80211_bss_ies *ies;
+ const struct ieee80211_ht_cap *ht_cap;
+ const struct ieee80211_vht_cap *vht_cap;
+ const struct ieee80211_he_cap_elem *he_cap;
+ const struct element *he_cap_elem;
+ u16 mcs_80_map, mcs_160_map;
+ int i, mcs_nss_size;
+ bool support_160;
+ u8 chains = 1;
+
+ if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HT)
+ return chains;
+
+ ht_cap_elem = ieee80211_bss_get_elem(cbss, WLAN_EID_HT_CAPABILITY);
+ if (ht_cap_elem && ht_cap_elem->datalen >= sizeof(*ht_cap)) {
+ ht_cap = (void *)ht_cap_elem->data;
+ chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
+ /*
+ * TODO: use "Tx Maximum Number Spatial Streams Supported" and
+ * "Tx Unequal Modulation Supported" fields.
+ */
+ }
+
+ if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_VHT)
+ return chains;
+
+ vht_cap_elem = ieee80211_bss_get_elem(cbss, WLAN_EID_VHT_CAPABILITY);
+ if (vht_cap_elem && vht_cap_elem->datalen >= sizeof(*vht_cap)) {
+ u8 nss;
+ u16 tx_mcs_map;
+
+ vht_cap = (void *)vht_cap_elem->data;
+ tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
+ for (nss = 8; nss > 0; nss--) {
+ if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=
+ IEEE80211_VHT_MCS_NOT_SUPPORTED)
+ break;
+ }
+ /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */
+ chains = max(chains, nss);
+ }
+
+ if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HE)
+ return chains;
+
+ ies = rcu_dereference(cbss->ies);
+ he_cap_elem = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY,
+ ies->data, ies->len);
+
+ if (!he_cap_elem || he_cap_elem->datalen < sizeof(*he_cap))
+ return chains;
+
+ /* skip one byte ext_tag_id */
+ he_cap = (void *)(he_cap_elem->data + 1);
+ mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap);
+
+ /* invalid HE IE */
+ if (he_cap_elem->datalen < 1 + mcs_nss_size + sizeof(*he_cap))
+ return chains;
+
+ /* mcs_nss is right after he_cap info */
+ he_mcs_nss_supp = (void *)(he_cap + 1);
+
+ mcs_80_map = le16_to_cpu(he_mcs_nss_supp->tx_mcs_80);
+
+ for (i = 7; i >= 0; i--) {
+ u8 mcs_80 = mcs_80_map >> (2 * i) & 3;
+
+ if (mcs_80 != IEEE80211_VHT_MCS_NOT_SUPPORTED) {
+ chains = max_t(u8, chains, i + 1);
+ break;
+ }
+ }
+
+ support_160 = he_cap->phy_cap_info[0] &
+ IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
+
+ if (!support_160)
+ return chains;
+
+ mcs_160_map = le16_to_cpu(he_mcs_nss_supp->tx_mcs_160);
+ for (i = 7; i >= 0; i--) {
+ u8 mcs_160 = mcs_160_map >> (2 * i) & 3;
+
+ if (mcs_160 != IEEE80211_VHT_MCS_NOT_SUPPORTED) {
+ chains = max_t(u8, chains, i + 1);
+ break;
+ }
+ }
+
+ return chains;
+}
+
+static bool
+ieee80211_verify_peer_he_mcs_support(struct ieee80211_sub_if_data *sdata,
+ const struct cfg80211_bss_ies *ies,
+ const struct ieee80211_he_operation *he_op)
+{
+ const struct element *he_cap_elem;
+ const struct ieee80211_he_cap_elem *he_cap;
+ struct ieee80211_he_mcs_nss_supp *he_mcs_nss_supp;
+ u16 mcs_80_map_tx, mcs_80_map_rx;
+ u16 ap_min_req_set;
+ int mcs_nss_size;
+ int nss;
+
+ he_cap_elem = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY,
+ ies->data, ies->len);
+
+ if (!he_cap_elem)
+ return false;
+
+ /* invalid HE IE */
+ if (he_cap_elem->datalen < 1 + sizeof(*he_cap)) {
+ sdata_info(sdata,
+ "Invalid HE elem, Disable HE\n");
+ return false;
+ }
+
+ /* skip one byte ext_tag_id */
+ he_cap = (void *)(he_cap_elem->data + 1);
+ mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap);
+
+ /* invalid HE IE */
+ if (he_cap_elem->datalen < 1 + sizeof(*he_cap) + mcs_nss_size) {
+ sdata_info(sdata,
+ "Invalid HE elem with nss size, Disable HE\n");
+ return false;
+ }
+
+ /* mcs_nss is right after he_cap info */
+ he_mcs_nss_supp = (void *)(he_cap + 1);
+
+ mcs_80_map_tx = le16_to_cpu(he_mcs_nss_supp->tx_mcs_80);
+ mcs_80_map_rx = le16_to_cpu(he_mcs_nss_supp->rx_mcs_80);
+
+ /* P802.11-REVme/D0.3
+ * 27.1.1 Introduction to the HE PHY
+ * ...
+ * An HE STA shall support the following features:
+ * ...
+ * Single spatial stream HE-MCSs 0 to 7 (transmit and receive) in all
+ * supported channel widths for HE SU PPDUs
+ */
+ if ((mcs_80_map_tx & 0x3) == IEEE80211_HE_MCS_NOT_SUPPORTED ||
+ (mcs_80_map_rx & 0x3) == IEEE80211_HE_MCS_NOT_SUPPORTED) {
+ sdata_info(sdata,
+ "Missing mandatory rates for 1 Nss, rx 0x%x, tx 0x%x, disable HE\n",
+ mcs_80_map_tx, mcs_80_map_rx);
+ return false;
+ }
+
+ if (!he_op)
+ return true;
+
+ ap_min_req_set = le16_to_cpu(he_op->he_mcs_nss_set);
+
+ /*
+ * Apparently iPhone 13 (at least iOS version 15.3.1) sets this to all
+ * zeroes, which is nonsense, and completely inconsistent with itself
+ * (it doesn't have 8 streams). Accept the settings in this case anyway.
+ */
+ if (!ap_min_req_set)
+ return true;
+
+ /* make sure the AP is consistent with itself
+ *
+ * P802.11-REVme/D0.3
+ * 26.17.1 Basic HE BSS operation
+ *
+ * A STA that is operating in an HE BSS shall be able to receive and
+ * transmit at each of the <HE-MCS, NSS> tuple values indicated by the
+ * Basic HE-MCS And NSS Set field of the HE Operation parameter of the
+ * MLME-START.request primitive and shall be able to receive at each of
+ * the <HE-MCS, NSS> tuple values indicated by the Supported HE-MCS and
+ * NSS Set field in the HE Capabilities parameter of the MLMESTART.request
+ * primitive
+ */
+ for (nss = 8; nss > 0; nss--) {
+ u8 ap_op_val = (ap_min_req_set >> (2 * (nss - 1))) & 3;
+ u8 ap_rx_val;
+ u8 ap_tx_val;
+
+ if (ap_op_val == IEEE80211_HE_MCS_NOT_SUPPORTED)
+ continue;
+
+ ap_rx_val = (mcs_80_map_rx >> (2 * (nss - 1))) & 3;
+ ap_tx_val = (mcs_80_map_tx >> (2 * (nss - 1))) & 3;
+
+ if (ap_rx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
+ ap_tx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
+ ap_rx_val < ap_op_val || ap_tx_val < ap_op_val) {
+ sdata_info(sdata,
+ "Invalid rates for %d Nss, rx %d, tx %d oper %d, disable HE\n",
+ nss, ap_rx_val, ap_rx_val, ap_op_val);
+ return false;
+ }
+ }
+
+ return true;
+}
+
+static bool
+ieee80211_verify_sta_he_mcs_support(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_supported_band *sband,
+ const struct ieee80211_he_operation *he_op)
+{
+ const struct ieee80211_sta_he_cap *sta_he_cap =
+ ieee80211_get_he_iftype_cap(sband,
+ ieee80211_vif_type_p2p(&sdata->vif));
+ u16 ap_min_req_set;
+ int i;
+
+ if (!sta_he_cap || !he_op)
+ return false;
+
+ ap_min_req_set = le16_to_cpu(he_op->he_mcs_nss_set);
+
+ /*
+ * Apparently iPhone 13 (at least iOS version 15.3.1) sets this to all
+ * zeroes, which is nonsense, and completely inconsistent with itself
+ * (it doesn't have 8 streams). Accept the settings in this case anyway.
+ */
+ if (!ap_min_req_set)
+ return true;
+
+ /* Need to go over for 80MHz, 160MHz and for 80+80 */
+ for (i = 0; i < 3; i++) {
+ const struct ieee80211_he_mcs_nss_supp *sta_mcs_nss_supp =
+ &sta_he_cap->he_mcs_nss_supp;
+ u16 sta_mcs_map_rx =
+ le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i]);
+ u16 sta_mcs_map_tx =
+ le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i + 1]);
+ u8 nss;
+ bool verified = true;
+
+ /*
+ * For each band there is a maximum of 8 spatial streams
+ * possible. Each of the sta_mcs_map_* is a 16-bit struct built
+ * of 2 bits per NSS (1-8), with the values defined in enum
+ * ieee80211_he_mcs_support. Need to make sure STA TX and RX
+ * capabilities aren't less than the AP's minimum requirements
+ * for this HE BSS per SS.
+ * It is enough to find one such band that meets the reqs.
+ */
+ for (nss = 8; nss > 0; nss--) {
+ u8 sta_rx_val = (sta_mcs_map_rx >> (2 * (nss - 1))) & 3;
+ u8 sta_tx_val = (sta_mcs_map_tx >> (2 * (nss - 1))) & 3;
+ u8 ap_val = (ap_min_req_set >> (2 * (nss - 1))) & 3;
+
+ if (ap_val == IEEE80211_HE_MCS_NOT_SUPPORTED)
+ continue;
+
+ /*
+ * Make sure the HE AP doesn't require MCSs that aren't
+ * supported by the client as required by spec
+ *
+ * P802.11-REVme/D0.3
+ * 26.17.1 Basic HE BSS operation
+ *
+ * An HE STA shall not attempt to join * (MLME-JOIN.request primitive)
+ * a BSS, unless it supports (i.e., is able to both transmit and
+ * receive using) all of the <HE-MCS, NSS> tuples in the basic
+ * HE-MCS and NSS set.
+ */
+ if (sta_rx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
+ sta_tx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
+ (ap_val > sta_rx_val) || (ap_val > sta_tx_val)) {
+ verified = false;
+ break;
+ }
+ }
+
+ if (verified)
+ return true;
+ }
+
+ /* If here, STA doesn't meet AP's HE min requirements */
+ return false;
+}
+
+static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_link_data *link,
+ struct cfg80211_bss *cbss,
+ ieee80211_conn_flags_t *conn_flags)
+{
+ struct ieee80211_local *local = sdata->local;
+ const struct ieee80211_ht_cap *ht_cap = NULL;
+ const struct ieee80211_ht_operation *ht_oper = NULL;
+ const struct ieee80211_vht_operation *vht_oper = NULL;
+ const struct ieee80211_he_operation *he_oper = NULL;
+ const struct ieee80211_eht_operation *eht_oper = NULL;
+ const struct ieee80211_s1g_oper_ie *s1g_oper = NULL;
+ struct ieee80211_supported_band *sband;
+ struct cfg80211_chan_def chandef;
+ bool is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ;
+ bool is_5ghz = cbss->channel->band == NL80211_BAND_5GHZ;
+ struct ieee80211_bss *bss = (void *)cbss->priv;
+ struct ieee80211_elems_parse_params parse_params = {
+ .bss = cbss,
+ .link_id = -1,
+ .from_ap = true,
+ };
+ struct ieee802_11_elems *elems;
+ const struct cfg80211_bss_ies *ies;
+ int ret;
+ u32 i;
+ bool have_80mhz;
+
+ rcu_read_lock();
+
+ ies = rcu_dereference(cbss->ies);
+ parse_params.start = ies->data;
+ parse_params.len = ies->len;
+ elems = ieee802_11_parse_elems_full(&parse_params);
+ if (!elems) {
+ rcu_read_unlock();
+ return -ENOMEM;
+ }
+
+ sband = local->hw.wiphy->bands[cbss->channel->band];
+
+ *conn_flags &= ~(IEEE80211_CONN_DISABLE_40MHZ |
+ IEEE80211_CONN_DISABLE_80P80MHZ |
+ IEEE80211_CONN_DISABLE_160MHZ);
+
+ /* disable HT/VHT/HE if we don't support them */
+ if (!sband->ht_cap.ht_supported && !is_6ghz) {
+ mlme_dbg(sdata, "HT not supported, disabling HT/VHT/HE/EHT\n");
+ *conn_flags |= IEEE80211_CONN_DISABLE_HT;
+ *conn_flags |= IEEE80211_CONN_DISABLE_VHT;
+ *conn_flags |= IEEE80211_CONN_DISABLE_HE;
+ *conn_flags |= IEEE80211_CONN_DISABLE_EHT;
+ }
+
+ if (!sband->vht_cap.vht_supported && is_5ghz) {
+ mlme_dbg(sdata, "VHT not supported, disabling VHT/HE/EHT\n");
+ *conn_flags |= IEEE80211_CONN_DISABLE_VHT;
+ *conn_flags |= IEEE80211_CONN_DISABLE_HE;
+ *conn_flags |= IEEE80211_CONN_DISABLE_EHT;
+ }
+
+ if (!ieee80211_get_he_iftype_cap(sband,
+ ieee80211_vif_type_p2p(&sdata->vif))) {
+ mlme_dbg(sdata, "HE not supported, disabling HE and EHT\n");
+ *conn_flags |= IEEE80211_CONN_DISABLE_HE;
+ *conn_flags |= IEEE80211_CONN_DISABLE_EHT;
+ }
+
+ if (!ieee80211_get_eht_iftype_cap(sband,
+ ieee80211_vif_type_p2p(&sdata->vif))) {
+ mlme_dbg(sdata, "EHT not supported, disabling EHT\n");
+ *conn_flags |= IEEE80211_CONN_DISABLE_EHT;
+ }
+
+ if (!(*conn_flags & IEEE80211_CONN_DISABLE_HT) && !is_6ghz) {
+ ht_oper = elems->ht_operation;
+ ht_cap = elems->ht_cap_elem;
+
+ if (!ht_cap) {
+ *conn_flags |= IEEE80211_CONN_DISABLE_HT;
+ ht_oper = NULL;
+ }
+ }
+
+ if (!(*conn_flags & IEEE80211_CONN_DISABLE_VHT) && !is_6ghz) {
+ vht_oper = elems->vht_operation;
+ if (vht_oper && !ht_oper) {
+ vht_oper = NULL;
+ sdata_info(sdata,
+ "AP advertised VHT without HT, disabling HT/VHT/HE\n");
+ *conn_flags |= IEEE80211_CONN_DISABLE_HT;
+ *conn_flags |= IEEE80211_CONN_DISABLE_VHT;
+ *conn_flags |= IEEE80211_CONN_DISABLE_HE;
+ *conn_flags |= IEEE80211_CONN_DISABLE_EHT;
+ }
+
+ if (!elems->vht_cap_elem) {
+ *conn_flags |= IEEE80211_CONN_DISABLE_VHT;
+ vht_oper = NULL;
+ }
+ }
+
+ if (!(*conn_flags & IEEE80211_CONN_DISABLE_HE)) {
+ he_oper = elems->he_operation;
+
+ if (link && is_6ghz) {
+ struct ieee80211_bss_conf *bss_conf;
+ u8 j = 0;
+
+ bss_conf = link->conf;
+
+ if (elems->pwr_constr_elem)
+ bss_conf->pwr_reduction = *elems->pwr_constr_elem;
+
+ BUILD_BUG_ON(ARRAY_SIZE(bss_conf->tx_pwr_env) !=
+ ARRAY_SIZE(elems->tx_pwr_env));
+
+ for (i = 0; i < elems->tx_pwr_env_num; i++) {
+ if (elems->tx_pwr_env_len[i] >
+ sizeof(bss_conf->tx_pwr_env[j]))
+ continue;
+
+ bss_conf->tx_pwr_env_num++;
+ memcpy(&bss_conf->tx_pwr_env[j], elems->tx_pwr_env[i],
+ elems->tx_pwr_env_len[i]);
+ j++;
+ }
+ }
+
+ if (!ieee80211_verify_peer_he_mcs_support(sdata, ies, he_oper) ||
+ !ieee80211_verify_sta_he_mcs_support(sdata, sband, he_oper))
+ *conn_flags |= IEEE80211_CONN_DISABLE_HE |
+ IEEE80211_CONN_DISABLE_EHT;
+ }
+
+ /*
+ * EHT requires HE to be supported as well. Specifically for 6 GHz
+ * channels, the operation channel information can only be deduced from
+ * both the 6 GHz operation information (from the HE operation IE) and
+ * EHT operation.
+ */
+ if (!(*conn_flags &
+ (IEEE80211_CONN_DISABLE_HE |
+ IEEE80211_CONN_DISABLE_EHT)) &&
+ he_oper) {
+ const struct cfg80211_bss_ies *cbss_ies;
+ const u8 *eht_oper_ie;
+
+ cbss_ies = rcu_dereference(cbss->ies);
+ eht_oper_ie = cfg80211_find_ext_ie(WLAN_EID_EXT_EHT_OPERATION,
+ cbss_ies->data, cbss_ies->len);
+ if (eht_oper_ie && eht_oper_ie[1] >=
+ 1 + sizeof(struct ieee80211_eht_operation))
+ eht_oper = (void *)(eht_oper_ie + 3);
+ else
+ eht_oper = NULL;
+ }
+
+ /* Allow VHT if at least one channel on the sband supports 80 MHz */
+ have_80mhz = false;
+ for (i = 0; i < sband->n_channels; i++) {
+ if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
+ IEEE80211_CHAN_NO_80MHZ))
+ continue;
+
+ have_80mhz = true;
+ break;
+ }
+
+ if (!have_80mhz) {
+ sdata_info(sdata, "80 MHz not supported, disabling VHT\n");
+ *conn_flags |= IEEE80211_CONN_DISABLE_VHT;
+ }
+
+ if (sband->band == NL80211_BAND_S1GHZ) {
+ s1g_oper = elems->s1g_oper;
+ if (!s1g_oper)
+ sdata_info(sdata,
+ "AP missing S1G operation element?\n");
+ }
+
+ *conn_flags |=
+ ieee80211_determine_chantype(sdata, link, *conn_flags,
+ sband,
+ cbss->channel,
+ bss->vht_cap_info,
+ ht_oper, vht_oper,
+ he_oper, eht_oper,
+ s1g_oper,
+ &chandef, false);
+
+ if (link)
+ link->needed_rx_chains =
+ min(ieee80211_max_rx_chains(link, cbss),
+ local->rx_chains);
+
+ rcu_read_unlock();
+ /* the element data was RCU protected so no longer valid anyway */
+ kfree(elems);
+ elems = NULL;
+
+ if (*conn_flags & IEEE80211_CONN_DISABLE_HE && is_6ghz) {
+ sdata_info(sdata, "Rejecting non-HE 6/7 GHz connection");
+ return -EINVAL;
+ }
+
+ if (!link)
+ return 0;
+
+ /* will change later if needed */
+ link->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_link_use_channel(link, &chandef,
+ IEEE80211_CHANCTX_SHARED);
+
+ /* don't downgrade for 5 and 10 MHz channels, though. */
+ if (chandef.width == NL80211_CHAN_WIDTH_5 ||
+ chandef.width == NL80211_CHAN_WIDTH_10)
+ goto out;
+
+ while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
+ *conn_flags |=
+ ieee80211_chandef_downgrade(&chandef);
+ ret = ieee80211_link_use_channel(link, &chandef,
+ IEEE80211_CHANCTX_SHARED);
+ }
+ out:
+ 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 bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_mgmt *mgmt,
+ struct ieee802_11_elems *elems,
+ const u8 *elem_start, unsigned int elem_len)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
+ struct ieee80211_local *local = sdata->local;
+ unsigned int link_id;
+ struct sta_info *sta;
+ u64 changed[IEEE80211_MLD_MAX_NUM_LINKS] = {};
+ int err;
+
+ 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, assoc_data->ap_addr);
+ if (WARN_ON(!sta))
+ goto out_err;
+
+ if (sdata->vif.valid_links) {
+ u16 valid_links = 0;
+
+ for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
+ if (!assoc_data->link[link_id].bss)
+ continue;
+ valid_links |= BIT(link_id);
+
+ if (link_id != assoc_data->assoc_link_id) {
+ err = ieee80211_sta_allocate_link(sta, link_id);
+ if (err)
+ goto out_err;
+ }
+ }
+
+ ieee80211_vif_set_links(sdata, valid_links);
+ }
+
+ for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
+ struct ieee80211_link_data *link;
+ struct link_sta_info *link_sta;
+
+ if (!assoc_data->link[link_id].bss)
+ continue;
+
+ link = sdata_dereference(sdata->link[link_id], sdata);
+ if (WARN_ON(!link))
+ goto out_err;
+
+ if (sdata->vif.valid_links)
+ link_info(link,
+ "local address %pM, AP link address %pM\n",
+ link->conf->addr,
+ assoc_data->link[link_id].bss->bssid);
+
+ link_sta = rcu_dereference_protected(sta->link[link_id],
+ lockdep_is_held(&local->sta_mtx));
+ if (WARN_ON(!link_sta))
+ goto out_err;
+
+ if (link_id != assoc_data->assoc_link_id) {
+ struct cfg80211_bss *cbss = assoc_data->link[link_id].bss;
+ const struct cfg80211_bss_ies *ies;
+
+ rcu_read_lock();
+ ies = rcu_dereference(cbss->ies);
+ ieee80211_get_dtim(ies,
+ &link->conf->sync_dtim_count,
+ &link->u.mgd.dtim_period);
+ link->conf->dtim_period = link->u.mgd.dtim_period ?: 1;
+ link->conf->beacon_int = cbss->beacon_interval;
+ rcu_read_unlock();
+
+ err = ieee80211_prep_channel(sdata, link, cbss,
+ &link->u.mgd.conn_flags);
+ if (err) {
+ link_info(link, "prep_channel failed\n");
+ goto out_err;
+ }
+ }
+
+ err = ieee80211_mgd_setup_link_sta(link, sta, link_sta,
+ assoc_data->link[link_id].bss);
+ if (err)
+ goto out_err;
+
+ if (!ieee80211_assoc_config_link(link, link_sta,
+ assoc_data->link[link_id].bss,
+ mgmt, elem_start, elem_len,
+ &changed[link_id]))
+ goto out_err;
+
+ if (link_id != assoc_data->assoc_link_id) {
+ err = ieee80211_sta_activate_link(sta, link_id);
+ if (err)
+ goto out_err;
+ }
+ }
+
+ rate_control_rate_init(sta);
+
+ if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) {
+ set_sta_flag(sta, WLAN_STA_MFP);
+ sta->sta.mfp = true;
+ } else {
+ sta->sta.mfp = false;
+ }
+
+ ieee80211_sta_set_max_amsdu_subframes(sta, elems->ext_capab,
+ elems->ext_capab_len);
+
+ sta->sta.wme = (elems->wmm_param || elems->s1g_capab) &&
+ local->hw.queues >= IEEE80211_NUM_ACS;
+
+ err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
+ if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
+ err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
+ if (err) {
+ sdata_info(sdata,
+ "failed to move station %pM to desired state\n",
+ sta->sta.addr);
+ WARN_ON(__sta_info_destroy(sta));
+ goto out_err;
+ }
+
+ if (sdata->wdev.use_4addr)
+ drv_sta_set_4addr(local, sdata, &sta->sta, true);
+
+ mutex_unlock(&sdata->local->sta_mtx);
+
+ ieee80211_set_associated(sdata, assoc_data, changed);
+
+ /*
+ * If we're using 4-addr mode, let the AP know that we're
+ * doing so, so that it can create the STA VLAN on its side
+ */
+ if (ifmgd->use_4addr)
+ ieee80211_send_4addr_nullfunc(local, sdata);
+
+ /*
+ * Start timer to probe the connection to the AP now.
+ * Also start the timer that will detect beacon loss.
+ */
+ ieee80211_sta_reset_beacon_monitor(sdata);
+ ieee80211_sta_reset_conn_monitor(sdata);
+
+ return true;
+out_err:
+ eth_zero_addr(sdata->vif.cfg.ap_addr);
+ mutex_unlock(&sdata->local->sta_mtx);
+ return false;
+}
+
+static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_mgmt *mgmt,
+ size_t len)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
+ u16 capab_info, status_code, aid;
+ struct ieee80211_elems_parse_params parse_params = {
+ .bss = NULL,
+ .link_id = -1,
+ .from_ap = true,
+ };
+ struct ieee802_11_elems *elems;
+ int ac;
+ const u8 *elem_start;
+ unsigned int elem_len;
+ bool reassoc;
+ struct ieee80211_event event = {
+ .type = MLME_EVENT,
+ .u.mlme.data = ASSOC_EVENT,
+ };
+ struct ieee80211_prep_tx_info info = {};
+ struct cfg80211_rx_assoc_resp resp = {
+ .uapsd_queues = -1,
+ };
+ u8 ap_mld_addr[ETH_ALEN] __aligned(2);
+ unsigned int link_id;
+
+ sdata_assert_lock(sdata);
+
+ if (!assoc_data)
+ return;
+
+ if (!ether_addr_equal(assoc_data->ap_addr, mgmt->bssid) ||
+ !ether_addr_equal(assoc_data->ap_addr, mgmt->sa))
+ return;
+
+ /*
+ * AssocResp and ReassocResp have identical structure, so process both
+ * of them in this function.
+ */
+
+ if (len < 24 + 6)
+ return;
+
+ reassoc = ieee80211_is_reassoc_resp(mgmt->frame_control);
+ capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
+ status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
+ if (assoc_data->s1g)
+ elem_start = mgmt->u.s1g_assoc_resp.variable;
+ else
+ elem_start = mgmt->u.assoc_resp.variable;
+
+ /*
+ * Note: this may not be perfect, AP might misbehave - if
+ * anyone needs to rely on perfect complete notification
+ * with the exact right subtype, then we need to track what
+ * we actually transmitted.
+ */
+ info.subtype = reassoc ? IEEE80211_STYPE_REASSOC_REQ :
+ IEEE80211_STYPE_ASSOC_REQ;
+
+ if (assoc_data->fils_kek_len &&
+ fils_decrypt_assoc_resp(sdata, (u8 *)mgmt, &len, assoc_data) < 0)
+ return;
+
+ elem_len = len - (elem_start - (u8 *)mgmt);
+ parse_params.start = elem_start;
+ parse_params.len = elem_len;
+ elems = ieee802_11_parse_elems_full(&parse_params);
+ if (!elems)
+ goto notify_driver;
+
+ if (elems->aid_resp)
+ aid = le16_to_cpu(elems->aid_resp->aid);
+ else if (assoc_data->s1g)
+ aid = 0; /* TODO */
+ else
+ aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
+
+ /*
+ * The 5 MSB of the AID field are reserved
+ * (802.11-2016 9.4.1.8 AID field)
+ */
+ aid &= 0x7ff;
+
+ sdata_info(sdata,
+ "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
+ reassoc ? "Rea" : "A", assoc_data->ap_addr,
+ capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
+
+ ifmgd->broken_ap = false;
+
+ if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
+ elems->timeout_int &&
+ elems->timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
+ u32 tu, ms;
+
+ cfg80211_assoc_comeback(sdata->dev, assoc_data->ap_addr,
+ le32_to_cpu(elems->timeout_int->value));
+
+ tu = le32_to_cpu(elems->timeout_int->value);
+ ms = tu * 1024 / 1000;
+ sdata_info(sdata,
+ "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
+ assoc_data->ap_addr, tu, ms);
+ assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
+ assoc_data->timeout_started = true;
+ if (ms > IEEE80211_ASSOC_TIMEOUT)
+ run_again(sdata, assoc_data->timeout);
+ goto notify_driver;
+ }
+
+ if (status_code != WLAN_STATUS_SUCCESS) {
+ sdata_info(sdata, "%pM denied association (code=%d)\n",
+ assoc_data->ap_addr, status_code);
+ event.u.mlme.status = MLME_DENIED;
+ event.u.mlme.reason = status_code;
+ drv_event_callback(sdata->local, sdata, &event);
+ } else {
+ if (aid == 0 || aid > IEEE80211_MAX_AID) {
+ sdata_info(sdata,
+ "invalid AID value %d (out of range), turn off PS\n",
+ aid);
+ aid = 0;
+ ifmgd->broken_ap = true;
+ }
+
+ if (sdata->vif.valid_links) {
+ if (!elems->multi_link) {
+ sdata_info(sdata,
+ "MLO association with %pM but no multi-link element in response!\n",
+ assoc_data->ap_addr);
+ goto abandon_assoc;
+ }
+
+ if (le16_get_bits(elems->multi_link->control,
+ IEEE80211_ML_CONTROL_TYPE) !=
+ IEEE80211_ML_CONTROL_TYPE_BASIC) {
+ sdata_info(sdata,
+ "bad multi-link element (control=0x%x)\n",
+ le16_to_cpu(elems->multi_link->control));
+ goto abandon_assoc;
+ } else {
+ struct ieee80211_mle_basic_common_info *common;
+
+ common = (void *)elems->multi_link->variable;
+
+ if (memcmp(assoc_data->ap_addr,
+ common->mld_mac_addr, ETH_ALEN)) {
+ sdata_info(sdata,
+ "AP MLD MAC address mismatch: got %pM expected %pM\n",
+ common->mld_mac_addr,
+ assoc_data->ap_addr);
+ goto abandon_assoc;
+ }
+ }
+ }
+
+ sdata->vif.cfg.aid = aid;
+
+ if (!ieee80211_assoc_success(sdata, mgmt, elems,
+ elem_start, elem_len)) {
+ /* oops -- internal error -- send timeout for now */
+ ieee80211_destroy_assoc_data(sdata, ASSOC_TIMEOUT);
+ goto notify_driver;
+ }
+ event.u.mlme.status = MLME_SUCCESS;
+ drv_event_callback(sdata->local, sdata, &event);
+ sdata_info(sdata, "associated\n");
+
+ info.success = 1;
+ }
+
+ for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
+ struct ieee80211_link_data *link;
+
+ link = sdata_dereference(sdata->link[link_id], sdata);
+ if (!link)
+ continue;
+ if (!assoc_data->link[link_id].bss)
+ continue;
+ resp.links[link_id].bss = assoc_data->link[link_id].bss;
+ resp.links[link_id].addr = link->conf->addr;
+
+ /* get uapsd queues configuration - same for all links */
+ resp.uapsd_queues = 0;
+ for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
+ if (link->tx_conf[ac].uapsd)
+ resp.uapsd_queues |= ieee80211_ac_to_qos_mask[ac];
+ }
+
+ if (sdata->vif.valid_links) {
+ ether_addr_copy(ap_mld_addr, sdata->vif.cfg.ap_addr);
+ resp.ap_mld_addr = ap_mld_addr;
+ }
+
+ ieee80211_destroy_assoc_data(sdata,
+ status_code == WLAN_STATUS_SUCCESS ?
+ ASSOC_SUCCESS :
+ ASSOC_REJECTED);
+
+ resp.buf = (u8 *)mgmt;
+ resp.len = len;
+ resp.req_ies = ifmgd->assoc_req_ies;
+ resp.req_ies_len = ifmgd->assoc_req_ies_len;
+ cfg80211_rx_assoc_resp(sdata->dev, &resp);
+notify_driver:
+ drv_mgd_complete_tx(sdata->local, sdata, &info);
+ kfree(elems);
+ return;
+abandon_assoc:
+ ieee80211_destroy_assoc_data(sdata, ASSOC_ABANDON);
+ goto notify_driver;
+}
+
+static void ieee80211_rx_bss_info(struct ieee80211_link_data *link,
+ struct ieee80211_mgmt *mgmt, size_t len,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_sub_if_data *sdata = link->sdata;
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_bss *bss;
+ struct ieee80211_channel *channel;
+
+ 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) {
+ link->conf->beacon_rate = bss->beacon_rate;
+ ieee80211_rx_bss_put(local, bss);
+ }
+}
+
+
+static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_link_data *link,
+ struct sk_buff *skb)
+{
+ struct ieee80211_sub_if_data *sdata = link->sdata;
+ struct ieee80211_mgmt *mgmt = (void *)skb->data;
+ struct ieee80211_if_managed *ifmgd;
+ struct ieee80211_rx_status *rx_status = (void *) skb->cb;
+ struct ieee80211_channel *channel;
+ size_t baselen, len = skb->len;
+
+ ifmgd = &sdata->u.mgd;
+
+ 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(link, mgmt, len, rx_status);
+
+ if (ifmgd->associated &&
+ ether_addr_equal(mgmt->bssid, link->u.mgd.bssid))
+ ieee80211_reset_ap_probe(sdata);
+}
+
+/*
+ * This is the canonical list of information elements we care about,
+ * the filter code also gives us all changes to the Microsoft OUI
+ * (00:50:F2) vendor IE which is used for WMM which we need to track,
+ * as well as the DTPC IE (part of the Cisco OUI) used for signaling
+ * changes to requested client power.
+ *
+ * We implement beacon filtering in software since that means we can
+ * avoid processing the frame here and in cfg80211, and userspace
+ * will not be able to tell whether the hardware supports it or not.
+ *
+ * XXX: This list needs to be dynamic -- userspace needs to be able to
+ * add items it requires. It also needs to be able to tell us to
+ * look out for other vendor IEs.
+ */
+static const u64 care_about_ies =
+ (1ULL << WLAN_EID_COUNTRY) |
+ (1ULL << WLAN_EID_ERP_INFO) |
+ (1ULL << WLAN_EID_CHANNEL_SWITCH) |
+ (1ULL << WLAN_EID_PWR_CONSTRAINT) |
+ (1ULL << WLAN_EID_HT_CAPABILITY) |
+ (1ULL << WLAN_EID_HT_OPERATION) |
+ (1ULL << WLAN_EID_EXT_CHANSWITCH_ANN);
+
+static void ieee80211_handle_beacon_sig(struct ieee80211_link_data *link,
+ struct ieee80211_if_managed *ifmgd,
+ struct ieee80211_bss_conf *bss_conf,
+ struct ieee80211_local *local,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_sub_if_data *sdata = link->sdata;
+
+ /* Track average RSSI from the Beacon frames of the current AP */
+
+ if (!link->u.mgd.tracking_signal_avg) {
+ link->u.mgd.tracking_signal_avg = true;
+ ewma_beacon_signal_init(&link->u.mgd.ave_beacon_signal);
+ link->u.mgd.last_cqm_event_signal = 0;
+ link->u.mgd.count_beacon_signal = 1;
+ link->u.mgd.last_ave_beacon_signal = 0;
+ } else {
+ link->u.mgd.count_beacon_signal++;
+ }
+
+ ewma_beacon_signal_add(&link->u.mgd.ave_beacon_signal,
+ -rx_status->signal);
+
+ if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
+ link->u.mgd.count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
+ int sig = -ewma_beacon_signal_read(&link->u.mgd.ave_beacon_signal);
+ int last_sig = link->u.mgd.last_ave_beacon_signal;
+ struct ieee80211_event event = {
+ .type = RSSI_EVENT,
+ };
+
+ /*
+ * if signal crosses either of the boundaries, invoke callback
+ * with appropriate parameters
+ */
+ if (sig > ifmgd->rssi_max_thold &&
+ (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
+ link->u.mgd.last_ave_beacon_signal = sig;
+ event.u.rssi.data = RSSI_EVENT_HIGH;
+ drv_event_callback(local, sdata, &event);
+ } else if (sig < ifmgd->rssi_min_thold &&
+ (last_sig >= ifmgd->rssi_max_thold ||
+ last_sig == 0)) {
+ link->u.mgd.last_ave_beacon_signal = sig;
+ event.u.rssi.data = RSSI_EVENT_LOW;
+ drv_event_callback(local, sdata, &event);
+ }
+ }
+
+ if (bss_conf->cqm_rssi_thold &&
+ link->u.mgd.count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
+ !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
+ int sig = -ewma_beacon_signal_read(&link->u.mgd.ave_beacon_signal);
+ int last_event = link->u.mgd.last_cqm_event_signal;
+ int thold = bss_conf->cqm_rssi_thold;
+ int hyst = bss_conf->cqm_rssi_hyst;
+
+ if (sig < thold &&
+ (last_event == 0 || sig < last_event - hyst)) {
+ link->u.mgd.last_cqm_event_signal = sig;
+ ieee80211_cqm_rssi_notify(
+ &sdata->vif,
+ NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
+ sig, GFP_KERNEL);
+ } else if (sig > thold &&
+ (last_event == 0 || sig > last_event + hyst)) {
+ link->u.mgd.last_cqm_event_signal = sig;
+ ieee80211_cqm_rssi_notify(
+ &sdata->vif,
+ NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
+ sig, GFP_KERNEL);
+ }
+ }
+
+ if (bss_conf->cqm_rssi_low &&
+ link->u.mgd.count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
+ int sig = -ewma_beacon_signal_read(&link->u.mgd.ave_beacon_signal);
+ int last_event = link->u.mgd.last_cqm_event_signal;
+ int low = bss_conf->cqm_rssi_low;
+ int high = bss_conf->cqm_rssi_high;
+
+ if (sig < low &&
+ (last_event == 0 || last_event >= low)) {
+ link->u.mgd.last_cqm_event_signal = sig;
+ ieee80211_cqm_rssi_notify(
+ &sdata->vif,
+ NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
+ sig, GFP_KERNEL);
+ } else if (sig > high &&
+ (last_event == 0 || last_event <= high)) {
+ link->u.mgd.last_cqm_event_signal = sig;
+ ieee80211_cqm_rssi_notify(
+ &sdata->vif,
+ NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
+ sig, GFP_KERNEL);
+ }
+ }
+}
+
+static bool ieee80211_rx_our_beacon(const u8 *tx_bssid,
+ struct cfg80211_bss *bss)
+{
+ if (ether_addr_equal(tx_bssid, bss->bssid))
+ return true;
+ if (!bss->transmitted_bss)
+ return false;
+ return ether_addr_equal(tx_bssid, bss->transmitted_bss->bssid);
+}
+
+static void ieee80211_rx_mgmt_beacon(struct ieee80211_link_data *link,
+ struct ieee80211_hdr *hdr, size_t len,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_sub_if_data *sdata = link->sdata;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
+ struct ieee80211_vif_cfg *vif_cfg = &sdata->vif.cfg;
+ struct ieee80211_mgmt *mgmt = (void *) hdr;
+ size_t baselen;
+ struct ieee802_11_elems *elems;
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_chanctx_conf *chanctx_conf;
+ struct ieee80211_channel *chan;
+ struct link_sta_info *link_sta;
+ 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];
+ struct ieee80211_elems_parse_params parse_params = {
+ .link_id = -1,
+ .from_ap = true,
+ };
+
+ 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;
+
+ parse_params.start = variable;
+ parse_params.len = len - baselen;
+
+ rcu_read_lock();
+ chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
+ if (!chanctx_conf) {
+ rcu_read_unlock();
+ return;
+ }
+
+ if (ieee80211_rx_status_to_khz(rx_status) !=
+ ieee80211_channel_to_khz(chanctx_conf->def.chan)) {
+ rcu_read_unlock();
+ return;
+ }
+ chan = chanctx_conf->def.chan;
+ rcu_read_unlock();
+
+ if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
+ !WARN_ON(sdata->vif.valid_links) &&
+ ieee80211_rx_our_beacon(bssid, ifmgd->assoc_data->link[0].bss)) {
+ parse_params.bss = ifmgd->assoc_data->link[0].bss;
+ elems = ieee802_11_parse_elems_full(&parse_params);
+ if (!elems)
+ return;
+
+ ieee80211_rx_bss_info(link, mgmt, len, rx_status);
+
+ if (elems->dtim_period)
+ link->u.mgd.dtim_period = elems->dtim_period;
+ link->u.mgd.have_beacon = true;
+ ifmgd->assoc_data->need_beacon = false;
+ if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
+ link->conf->sync_tsf =
+ le64_to_cpu(mgmt->u.beacon.timestamp);
+ link->conf->sync_device_ts =
+ rx_status->device_timestamp;
+ link->conf->sync_dtim_count = elems->dtim_count;
+ }
+
+ if (elems->mbssid_config_ie)
+ bss_conf->profile_periodicity =
+ elems->mbssid_config_ie->profile_periodicity;
+ else
+ bss_conf->profile_periodicity = 0;
+
+ if (elems->ext_capab_len >= 11 &&
+ (elems->ext_capab[10] & WLAN_EXT_CAPA11_EMA_SUPPORT))
+ bss_conf->ema_ap = true;
+ else
+ bss_conf->ema_ap = false;
+
+ /* continue assoc process */
+ ifmgd->assoc_data->timeout = jiffies;
+ ifmgd->assoc_data->timeout_started = true;
+ run_again(sdata, ifmgd->assoc_data->timeout);
+ kfree(elems);
+ return;
+ }
+
+ if (!ifmgd->associated ||
+ !ieee80211_rx_our_beacon(bssid, link->u.mgd.bss))
+ return;
+ bssid = link->u.mgd.bssid;
+
+ if (!(rx_status->flag & RX_FLAG_NO_SIGNAL_VAL))
+ ieee80211_handle_beacon_sig(link, ifmgd, bss_conf,
+ local, rx_status);
+
+ if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) {
+ mlme_dbg_ratelimited(sdata,
+ "cancelling AP probe due to a received beacon\n");
+ ieee80211_reset_ap_probe(sdata);
+ }
+
+ /*
+ * Push the beacon loss detection into the future since
+ * we are processing a beacon from the AP just now.
+ */
+ ieee80211_sta_reset_beacon_monitor(sdata);
+
+ /* TODO: CRC urrently not calculated on S1G Beacon Compatibility
+ * element (which carries the beacon interval). Don't forget to add a
+ * bit to care_about_ies[] above if mac80211 is interested in a
+ * changing S1G element.
+ */
+ if (!ieee80211_is_s1g_beacon(hdr->frame_control))
+ ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
+ parse_params.bss = link->u.mgd.bss;
+ parse_params.filter = care_about_ies;
+ parse_params.crc = ncrc;
+ elems = ieee802_11_parse_elems_full(&parse_params);
+ if (!elems)
+ return;
+ ncrc = elems->crc;
+
+ if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
+ ieee80211_check_tim(elems->tim, elems->tim_len, vif_cfg->aid)) {
+ if (local->hw.conf.dynamic_ps_timeout > 0) {
+ if (local->hw.conf.flags & IEEE80211_CONF_PS) {
+ local->hw.conf.flags &= ~IEEE80211_CONF_PS;
+ ieee80211_hw_config(local,
+ IEEE80211_CONF_CHANGE_PS);
+ }
+ ieee80211_send_nullfunc(local, sdata, false);
+ } else if (!local->pspolling && sdata->u.mgd.powersave) {
+ local->pspolling = true;
+
+ /*
+ * Here is assumed that the driver will be
+ * able to send ps-poll frame and receive a
+ * response even though power save mode is
+ * enabled, but some drivers might require
+ * to disable power save here. This needs
+ * to be investigated.
+ */
+ ieee80211_send_pspoll(local, sdata);
+ }
+ }
+
+ if (sdata->vif.p2p ||
+ sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
+ struct ieee80211_p2p_noa_attr noa = {};
+ int ret;
+
+ ret = cfg80211_get_p2p_attr(variable,
+ len - baselen,
+ IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
+ (u8 *) &noa, sizeof(noa));
+ if (ret >= 2) {
+ if (link->u.mgd.p2p_noa_index != noa.index) {
+ /* valid noa_attr and index changed */
+ link->u.mgd.p2p_noa_index = noa.index;
+ memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa));
+ changed |= BSS_CHANGED_P2P_PS;
+ /*
+ * make sure we update all information, the CRC
+ * mechanism doesn't look at P2P attributes.
+ */
+ link->u.mgd.beacon_crc_valid = false;
+ }
+ } else if (link->u.mgd.p2p_noa_index != -1) {
+ /* noa_attr not found and we had valid noa_attr before */
+ link->u.mgd.p2p_noa_index = -1;
+ memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
+ changed |= BSS_CHANGED_P2P_PS;
+ link->u.mgd.beacon_crc_valid = false;
+ }
+ }
+
+ if (link->u.mgd.csa_waiting_bcn)
+ ieee80211_chswitch_post_beacon(link);
+
+ /*
+ * Update beacon timing and dtim count on every beacon appearance. This
+ * will allow the driver to use the most updated values. Do it before
+ * comparing this one with last received beacon.
+ * IMPORTANT: These parameters would possibly be out of sync by the time
+ * the driver will use them. The synchronized view is currently
+ * guaranteed only in certain callbacks.
+ */
+ if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY) &&
+ !ieee80211_is_s1g_beacon(hdr->frame_control)) {
+ link->conf->sync_tsf =
+ le64_to_cpu(mgmt->u.beacon.timestamp);
+ link->conf->sync_device_ts =
+ rx_status->device_timestamp;
+ link->conf->sync_dtim_count = elems->dtim_count;
+ }
+
+ if ((ncrc == link->u.mgd.beacon_crc && link->u.mgd.beacon_crc_valid) ||
+ ieee80211_is_s1g_short_beacon(mgmt->frame_control))
+ goto free;
+ link->u.mgd.beacon_crc = ncrc;
+ link->u.mgd.beacon_crc_valid = true;
+
+ ieee80211_rx_bss_info(link, mgmt, len, rx_status);
+
+ ieee80211_sta_process_chanswitch(link, rx_status->mactime,
+ rx_status->device_timestamp,
+ elems, true);
+
+ if (!link->u.mgd.disable_wmm_tracking &&
+ ieee80211_sta_wmm_params(local, link, elems->wmm_param,
+ elems->wmm_param_len,
+ elems->mu_edca_param_set))
+ changed |= BSS_CHANGED_QOS;
+
+ /*
+ * If we haven't had a beacon before, tell the driver about the
+ * DTIM period (and beacon timing if desired) now.
+ */
+ if (!link->u.mgd.have_beacon) {
+ /* a few bogus AP send dtim_period = 0 or no TIM IE */
+ bss_conf->dtim_period = elems->dtim_period ?: 1;
+
+ changed |= BSS_CHANGED_BEACON_INFO;
+ link->u.mgd.have_beacon = true;
+
+ 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(link,
+ le16_to_cpu(mgmt->u.beacon.capab_info),
+ erp_valid, erp_value);
+
+ mutex_lock(&local->sta_mtx);
+ sta = sta_info_get(sdata, sdata->vif.cfg.ap_addr);
+ if (WARN_ON(!sta)) {
+ mutex_unlock(&local->sta_mtx);
+ goto free;
+ }
+ link_sta = rcu_dereference_protected(sta->link[link->link_id],
+ lockdep_is_held(&local->sta_mtx));
+ if (WARN_ON(!link_sta)) {
+ mutex_unlock(&local->sta_mtx);
+ goto free;
+ }
+
+ changed |= ieee80211_recalc_twt_req(link, link_sta, elems);
+
+ if (ieee80211_config_bw(link, elems->ht_cap_elem,
+ elems->vht_cap_elem, elems->ht_operation,
+ elems->vht_operation, elems->he_operation,
+ elems->eht_operation,
+ elems->s1g_oper, bssid, &changed)) {
+ 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);
+ goto free;
+ }
+
+ if (sta && elems->opmode_notif)
+ ieee80211_vht_handle_opmode(sdata, link_sta,
+ *elems->opmode_notif,
+ rx_status->band);
+ mutex_unlock(&local->sta_mtx);
+
+ changed |= ieee80211_handle_pwr_constr(link, chan, mgmt,
+ elems->country_elem,
+ elems->country_elem_len,
+ elems->pwr_constr_elem,
+ elems->cisco_dtpc_elem);
+
+ ieee80211_link_info_change_notify(sdata, link, changed);
+free:
+ kfree(elems);
+}
+
+void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb)
+{
+ struct ieee80211_link_data *link = &sdata->deflink;
+ struct ieee80211_rx_status *rx_status;
+ struct ieee80211_hdr *hdr;
+ u16 fc;
+
+ 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(link, 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_link_data *link = &sdata->deflink;
+ struct ieee80211_rx_status *rx_status;
+ struct ieee80211_mgmt *mgmt;
+ u16 fc;
+ 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);
+
+ if (rx_status->link_valid) {
+ link = sdata_dereference(sdata->link[rx_status->link_id],
+ sdata);
+ if (!link)
+ goto out;
+ }
+
+ switch (fc & IEEE80211_FCTL_STYPE) {
+ case IEEE80211_STYPE_BEACON:
+ ieee80211_rx_mgmt_beacon(link, (void *)mgmt,
+ skb->len, rx_status);
+ break;
+ case IEEE80211_STYPE_PROBE_RESP:
+ ieee80211_rx_mgmt_probe_resp(link, skb);
+ break;
+ case IEEE80211_STYPE_AUTH:
+ ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
+ break;
+ case IEEE80211_STYPE_DEAUTH:
+ ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
+ break;
+ case IEEE80211_STYPE_DISASSOC:
+ ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
+ break;
+ case IEEE80211_STYPE_ASSOC_RESP:
+ case IEEE80211_STYPE_REASSOC_RESP:
+ ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len);
+ break;
+ case IEEE80211_STYPE_ACTION:
+ if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
+ struct ieee802_11_elems *elems;
+
+ ies_len = skb->len -
+ offsetof(struct ieee80211_mgmt,
+ u.action.u.chan_switch.variable);
+
+ if (ies_len < 0)
+ break;
+
+ /* CSA IE cannot be overridden, no need for BSSID */
+ elems = ieee802_11_parse_elems(
+ mgmt->u.action.u.chan_switch.variable,
+ ies_len, true, NULL);
+
+ if (elems && !elems->parse_error)
+ ieee80211_sta_process_chanswitch(link,
+ rx_status->mactime,
+ rx_status->device_timestamp,
+ elems, false);
+ kfree(elems);
+ } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
+ struct ieee802_11_elems *elems;
+
+ ies_len = skb->len -
+ offsetof(struct ieee80211_mgmt,
+ u.action.u.ext_chan_switch.variable);
+
+ if (ies_len < 0)
+ break;
+
+ /*
+ * extended CSA IE can't be overridden, no need for
+ * BSSID
+ */
+ elems = ieee802_11_parse_elems(
+ mgmt->u.action.u.ext_chan_switch.variable,
+ ies_len, true, NULL);
+
+ if (elems && !elems->parse_error) {
+ /* for the handling code pretend it was an IE */
+ elems->ext_chansw_ie =
+ &mgmt->u.action.u.ext_chan_switch.data;
+
+ ieee80211_sta_process_chanswitch(link,
+ rx_status->mactime,
+ rx_status->device_timestamp,
+ elems, false);
+ }
+
+ kfree(elems);
+ }
+ break;
+ }
+out:
+ 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);
+}
+
+void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
+ u8 reason, bool tx)
+{
+ u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
+
+ ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
+ tx, frame_buf);
+
+ ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
+ reason, false);
+}
+
+static int ieee80211_auth(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
+ u32 tx_flags = 0;
+ u16 trans = 1;
+ u16 status = 0;
+ struct ieee80211_prep_tx_info info = {
+ .subtype = IEEE80211_STYPE_AUTH,
+ };
+
+ 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->ap_addr);
+
+ /*
+ * Most likely AP is not in the range so remove the
+ * bss struct for that AP.
+ */
+ cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss);
+
+ return -ETIMEDOUT;
+ }
+
+ if (auth_data->algorithm == WLAN_AUTH_SAE)
+ info.duration = jiffies_to_msecs(IEEE80211_AUTH_TIMEOUT_SAE);
+
+ drv_mgd_prepare_tx(local, sdata, &info);
+
+ sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
+ auth_data->ap_addr, auth_data->tries,
+ IEEE80211_AUTH_MAX_TRIES);
+
+ auth_data->expected_transaction = 2;
+
+ if (auth_data->algorithm == WLAN_AUTH_SAE) {
+ trans = auth_data->sae_trans;
+ status = auth_data->sae_status;
+ auth_data->expected_transaction = trans;
+ }
+
+ if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
+ tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
+ IEEE80211_TX_INTFL_MLME_CONN_TX;
+
+ ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
+ auth_data->data, auth_data->data_len,
+ auth_data->ap_addr, auth_data->ap_addr,
+ NULL, 0, 0, tx_flags);
+
+ if (tx_flags == 0) {
+ if (auth_data->algorithm == WLAN_AUTH_SAE)
+ auth_data->timeout = jiffies +
+ IEEE80211_AUTH_TIMEOUT_SAE;
+ else
+ auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
+ } else {
+ auth_data->timeout =
+ round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG);
+ }
+
+ auth_data->timeout_started = true;
+ run_again(sdata, auth_data->timeout);
+
+ return 0;
+}
+
+static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
+ struct ieee80211_local *local = sdata->local;
+ int ret;
+
+ 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->ap_addr);
+
+ /*
+ * Most likely AP is not in the range so remove the
+ * bss struct for that AP.
+ */
+ cfg80211_unlink_bss(local->hw.wiphy,
+ assoc_data->link[assoc_data->assoc_link_id].bss);
+
+ return -ETIMEDOUT;
+ }
+
+ sdata_info(sdata, "associate with %pM (try %d/%d)\n",
+ assoc_data->ap_addr, assoc_data->tries,
+ IEEE80211_ASSOC_MAX_TRIES);
+ ret = ieee80211_send_assoc(sdata);
+ if (ret)
+ return ret;
+
+ if (!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
+ assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
+ assoc_data->timeout_started = true;
+ run_again(sdata, assoc_data->timeout);
+ } else {
+ assoc_data->timeout =
+ round_jiffies_up(jiffies +
+ IEEE80211_ASSOC_TIMEOUT_LONG);
+ assoc_data->timeout_started = true;
+ run_again(sdata, assoc_data->timeout);
+ }
+
+ return 0;
+}
+
+void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
+ __le16 fc, bool acked)
+{
+ struct ieee80211_local *local = sdata->local;
+
+ sdata->u.mgd.status_fc = fc;
+ sdata->u.mgd.status_acked = acked;
+ sdata->u.mgd.status_received = true;
+
+ 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 || ifmgd->auth_data->waiting) {
+ /*
+ * ok ... we waited for assoc or continuation but
+ * userspace didn't do it, so kill the auth data
+ */
+ ieee80211_destroy_auth_data(sdata, false);
+ } else if (ieee80211_auth(sdata)) {
+ u8 ap_addr[ETH_ALEN];
+ struct ieee80211_event event = {
+ .type = MLME_EVENT,
+ .u.mlme.data = AUTH_EVENT,
+ .u.mlme.status = MLME_TIMEOUT,
+ };
+
+ memcpy(ap_addr, ifmgd->auth_data->ap_addr, ETH_ALEN);
+
+ ieee80211_destroy_auth_data(sdata, false);
+
+ cfg80211_auth_timeout(sdata->dev, ap_addr);
+ drv_event_callback(sdata->local, sdata, &event);
+ }
+ } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
+ run_again(sdata, ifmgd->auth_data->timeout);
+
+ if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
+ time_after(jiffies, ifmgd->assoc_data->timeout)) {
+ if ((ifmgd->assoc_data->need_beacon &&
+ !sdata->deflink.u.mgd.have_beacon) ||
+ ieee80211_do_assoc(sdata)) {
+ struct ieee80211_event event = {
+ .type = MLME_EVENT,
+ .u.mlme.data = ASSOC_EVENT,
+ .u.mlme.status = MLME_TIMEOUT,
+ };
+
+ ieee80211_destroy_assoc_data(sdata, ASSOC_TIMEOUT);
+ drv_event_callback(sdata->local, sdata, &event);
+ }
+ } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
+ run_again(sdata, ifmgd->assoc_data->timeout);
+
+ if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL &&
+ ifmgd->associated) {
+ u8 *bssid = sdata->deflink.u.mgd.bssid;
+ int max_tries;
+
+ if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
+ max_tries = max_nullfunc_tries;
+ else
+ max_tries = max_probe_tries;
+
+ /* ACK received for nullfunc probing frame */
+ if (!ifmgd->probe_send_count)
+ ieee80211_reset_ap_probe(sdata);
+ else if (ifmgd->nullfunc_failed) {
+ if (ifmgd->probe_send_count < max_tries) {
+ mlme_dbg(sdata,
+ "No ack for nullfunc frame to AP %pM, try %d/%i\n",
+ bssid, ifmgd->probe_send_count,
+ max_tries);
+ ieee80211_mgd_probe_ap_send(sdata);
+ } else {
+ mlme_dbg(sdata,
+ "No ack for nullfunc frame to AP %pM, disconnecting.\n",
+ bssid);
+ ieee80211_sta_connection_lost(sdata,
+ WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
+ false);
+ }
+ } else if (time_is_after_jiffies(ifmgd->probe_timeout))
+ run_again(sdata, ifmgd->probe_timeout);
+ else if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
+ mlme_dbg(sdata,
+ "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
+ bssid, probe_wait_ms);
+ ieee80211_sta_connection_lost(sdata,
+ WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
+ } else if (ifmgd->probe_send_count < max_tries) {
+ mlme_dbg(sdata,
+ "No probe response from AP %pM after %dms, try %d/%i\n",
+ bssid, probe_wait_ms,
+ ifmgd->probe_send_count, max_tries);
+ ieee80211_mgd_probe_ap_send(sdata);
+ } else {
+ /*
+ * We actually lost the connection ... or did we?
+ * Let's make sure!
+ */
+ mlme_dbg(sdata,
+ "No probe response from AP %pM after %dms, disconnecting.\n",
+ bssid, probe_wait_ms);
+
+ ieee80211_sta_connection_lost(sdata,
+ WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
+ }
+ }
+
+ 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);
+
+ if (WARN_ON(sdata->vif.valid_links))
+ return;
+
+ if (sdata->vif.bss_conf.csa_active &&
+ !sdata->deflink.u.mgd.csa_waiting_bcn)
+ return;
+
+ if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
+ return;
+
+ sdata->u.mgd.connection_loss = false;
+ 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 (WARN_ON(sdata->vif.valid_links))
+ return;
+
+ if (sdata->vif.bss_conf.csa_active &&
+ !sdata->deflink.u.mgd.csa_waiting_bcn)
+ return;
+
+ sta = sta_info_get(sdata, sdata->vif.cfg.ap_addr);
+ if (!sta)
+ return;
+
+ timeout = sta->deflink.status_stats.last_ack;
+ if (time_before(sta->deflink.status_stats.last_ack, sta->deflink.rx_stats.last_rx))
+ timeout = sta->deflink.rx_stats.last_rx;
+ timeout += IEEE80211_CONNECTION_IDLE_TIME;
+
+ /* If timeout is after now, then update timer to fire at
+ * the later date, but do not actually probe at this time.
+ */
+ if (time_is_after_jiffies(timeout)) {
+ mod_timer(&ifmgd->conn_mon_timer, round_jiffies_up(timeout));
+ return;
+ }
+
+ 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 *ap_addr = ifmgd->auth_data ?
+ ifmgd->auth_data->ap_addr :
+ ifmgd->assoc_data->ap_addr;
+
+ /*
+ * If we are trying to authenticate / associate while suspending,
+ * cfg80211 won't know and won't actually abort those attempts,
+ * thus we need to do that ourselves.
+ */
+ ieee80211_send_deauth_disassoc(sdata, ap_addr, ap_addr,
+ IEEE80211_STYPE_DEAUTH,
+ WLAN_REASON_DEAUTH_LEAVING,
+ false, frame_buf);
+ if (ifmgd->assoc_data)
+ ieee80211_destroy_assoc_data(sdata, ASSOC_ABANDON);
+ if (ifmgd->auth_data)
+ ieee80211_destroy_auth_data(sdata, false);
+ cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
+ IEEE80211_DEAUTH_FRAME_LEN,
+ false);
+ }
+
+ /* This is a bit of a hack - we should find a better and more generic
+ * solution to this. Normally when suspending, cfg80211 will in fact
+ * deauthenticate. However, it doesn't (and cannot) stop an ongoing
+ * auth (not so important) or assoc (this is the problem) process.
+ *
+ * As a consequence, it can happen that we are in the process of both
+ * associating and suspending, and receive an association response
+ * after cfg80211 has checked if it needs to disconnect, but before
+ * we actually set the flag to drop incoming frames. This will then
+ * cause the workqueue flush to process the association response in
+ * the suspend, resulting in a successful association just before it
+ * tries to remove the interface from the driver, which now though
+ * has a channel context assigned ... this results in issues.
+ *
+ * To work around this (for now) simply deauth here again if we're
+ * now connected.
+ */
+ if (ifmgd->associated && !sdata->local->wowlan) {
+ u8 bssid[ETH_ALEN];
+ struct cfg80211_deauth_request req = {
+ .reason_code = WLAN_REASON_DEAUTH_LEAVING,
+ .bssid = bssid,
+ };
+
+ memcpy(bssid, sdata->vif.cfg.ap_addr, ETH_ALEN);
+ ieee80211_mgd_deauth(sdata, &req);
+ }
+
+ sdata_unlock(sdata);
+}
+#endif
+
+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,
+ WLAN_REASON_UNSPECIFIED,
+ true);
+ sdata_unlock(sdata);
+ return;
+ }
+
+ if (sdata->flags & IEEE80211_SDATA_DISCONNECT_HW_RESTART) {
+ sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_HW_RESTART;
+ mlme_dbg(sdata, "driver requested disconnect after hardware restart\n");
+ ieee80211_sta_connection_lost(sdata,
+ WLAN_REASON_UNSPECIFIED,
+ true);
+ sdata_unlock(sdata);
+ return;
+ }
+
+ sdata_unlock(sdata);
+}
+
+static void ieee80211_request_smps_mgd_work(struct work_struct *work)
+{
+ struct ieee80211_link_data *link =
+ container_of(work, struct ieee80211_link_data,
+ u.mgd.request_smps_work);
+
+ sdata_lock(link->sdata);
+ __ieee80211_request_smps_mgd(link->sdata, link,
+ link->u.mgd.driver_smps_mode);
+ sdata_unlock(link->sdata);
+}
+
+/* interface setup */
+void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+
+ INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_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_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);
+ 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;
+ /* Setup TDLS data */
+ spin_lock_init(&ifmgd->teardown_lock);
+ ifmgd->teardown_skb = NULL;
+ ifmgd->orig_teardown_skb = NULL;
+}
+
+void ieee80211_mgd_setup_link(struct ieee80211_link_data *link)
+{
+ struct ieee80211_sub_if_data *sdata = link->sdata;
+ struct ieee80211_local *local = sdata->local;
+ unsigned int link_id = link->link_id;
+
+ link->u.mgd.p2p_noa_index = -1;
+ link->u.mgd.conn_flags = 0;
+ link->conf->bssid = link->u.mgd.bssid;
+
+ INIT_WORK(&link->u.mgd.request_smps_work,
+ ieee80211_request_smps_mgd_work);
+ if (local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS)
+ link->u.mgd.req_smps = IEEE80211_SMPS_AUTOMATIC;
+ else
+ link->u.mgd.req_smps = IEEE80211_SMPS_OFF;
+
+ INIT_WORK(&link->u.mgd.chswitch_work, ieee80211_chswitch_work);
+ timer_setup(&link->u.mgd.chswitch_timer, ieee80211_chswitch_timer, 0);
+
+ if (sdata->u.mgd.assoc_data)
+ ether_addr_copy(link->conf->addr,
+ sdata->u.mgd.assoc_data->link[link_id].addr);
+ else if (!is_valid_ether_addr(link->conf->addr))
+ eth_random_addr(link->conf->addr);
+}
+
+/* scan finished notification */
+void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ /* Restart STA timers */
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+ if (ieee80211_sdata_running(sdata))
+ ieee80211_restart_sta_timer(sdata);
+ }
+ rcu_read_unlock();
+}
+
+static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
+ struct cfg80211_bss *cbss, s8 link_id,
+ const u8 *ap_mld_addr, bool assoc,
+ bool override)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_bss *bss = (void *)cbss->priv;
+ struct sta_info *new_sta = NULL;
+ struct ieee80211_link_data *link;
+ bool have_sta = false;
+ bool mlo;
+ int err;
+
+ if (link_id >= 0) {
+ mlo = true;
+ if (WARN_ON(!ap_mld_addr))
+ return -EINVAL;
+ err = ieee80211_vif_set_links(sdata, BIT(link_id));
+ } else {
+ if (WARN_ON(ap_mld_addr))
+ return -EINVAL;
+ ap_mld_addr = cbss->bssid;
+ err = ieee80211_vif_set_links(sdata, 0);
+ link_id = 0;
+ mlo = false;
+ }
+
+ if (err)
+ return err;
+
+ link = sdata_dereference(sdata->link[link_id], sdata);
+ if (WARN_ON(!link)) {
+ err = -ENOLINK;
+ goto out_err;
+ }
+
+ if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data)) {
+ err = -EINVAL;
+ goto out_err;
+ }
+
+ /* If a reconfig is happening, bail out */
+ if (local->in_reconfig) {
+ err = -EBUSY;
+ goto out_err;
+ }
+
+ if (assoc) {
+ rcu_read_lock();
+ have_sta = sta_info_get(sdata, ap_mld_addr);
+ rcu_read_unlock();
+ }
+
+ if (!have_sta) {
+ if (mlo)
+ new_sta = sta_info_alloc_with_link(sdata, ap_mld_addr,
+ link_id, cbss->bssid,
+ GFP_KERNEL);
+ else
+ new_sta = sta_info_alloc(sdata, ap_mld_addr, GFP_KERNEL);
+
+ if (!new_sta) {
+ err = -ENOMEM;
+ goto out_err;
+ }
+
+ new_sta->sta.mlo = mlo;
+ }
+
+ /*
+ * Set up the information for the new channel before setting the
+ * new channel. We can't - completely race-free - change the basic
+ * rates bitmap and the channel (sband) that it refers to, but if
+ * we set it up before we at least avoid calling into the driver's
+ * bss_info_changed() method with invalid information (since we do
+ * call that from changing the channel - only for IDLE and perhaps
+ * some others, but ...).
+ *
+ * So to avoid that, just set up all the new information before the
+ * channel, but tell the driver to apply it only afterwards, since
+ * it might need the new channel for that.
+ */
+ if (new_sta) {
+ const struct cfg80211_bss_ies *ies;
+ struct link_sta_info *link_sta;
+
+ rcu_read_lock();
+ link_sta = rcu_dereference(new_sta->link[link_id]);
+ if (WARN_ON(!link_sta)) {
+ rcu_read_unlock();
+ sta_info_free(local, new_sta);
+ err = -EINVAL;
+ goto out_err;
+ }
+
+ err = ieee80211_mgd_setup_link_sta(link, new_sta,
+ link_sta, cbss);
+ if (err) {
+ rcu_read_unlock();
+ sta_info_free(local, new_sta);
+ goto out_err;
+ }
+
+ memcpy(link->u.mgd.bssid, cbss->bssid, ETH_ALEN);
+
+ /* set timing information */
+ link->conf->beacon_int = cbss->beacon_interval;
+ ies = rcu_dereference(cbss->beacon_ies);
+ if (ies) {
+ link->conf->sync_tsf = ies->tsf;
+ link->conf->sync_device_ts =
+ bss->device_ts_beacon;
+
+ ieee80211_get_dtim(ies,
+ &link->conf->sync_dtim_count,
+ NULL);
+ } else if (!ieee80211_hw_check(&sdata->local->hw,
+ TIMING_BEACON_ONLY)) {
+ ies = rcu_dereference(cbss->proberesp_ies);
+ /* must be non-NULL since beacon IEs were NULL */
+ link->conf->sync_tsf = ies->tsf;
+ link->conf->sync_device_ts =
+ bss->device_ts_presp;
+ link->conf->sync_dtim_count = 0;
+ } else {
+ link->conf->sync_tsf = 0;
+ link->conf->sync_device_ts = 0;
+ link->conf->sync_dtim_count = 0;
+ }
+ rcu_read_unlock();
+ }
+
+ if (new_sta || override) {
+ err = ieee80211_prep_channel(sdata, link, cbss,
+ &link->u.mgd.conn_flags);
+ if (err) {
+ if (new_sta)
+ sta_info_free(local, new_sta);
+ goto out_err;
+ }
+ }
+
+ if (new_sta) {
+ /*
+ * tell driver about BSSID, basic rates and timing
+ * this was set up above, before setting the channel
+ */
+ ieee80211_link_info_change_notify(sdata, link,
+ BSS_CHANGED_BSSID |
+ BSS_CHANGED_BASIC_RATES |
+ BSS_CHANGED_BEACON_INT);
+
+ if (assoc)
+ sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
+
+ err = sta_info_insert(new_sta);
+ new_sta = NULL;
+ if (err) {
+ sdata_info(sdata,
+ "failed to insert STA entry for the AP (error %d)\n",
+ err);
+ goto out_err;
+ }
+ } else
+ WARN_ON_ONCE(!ether_addr_equal(link->u.mgd.bssid, cbss->bssid));
+
+ /* Cancel scan to ensure that nothing interferes with connection */
+ if (local->scanning)
+ ieee80211_scan_cancel(local);
+
+ return 0;
+
+out_err:
+ ieee80211_link_release_channel(&sdata->deflink);
+ ieee80211_vif_set_links(sdata, 0);
+ return err;
+}
+
+/* config hooks */
+int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
+ struct cfg80211_auth_request *req)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_mgd_auth_data *auth_data;
+ 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;
+
+ memcpy(auth_data->ap_addr,
+ req->ap_mld_addr ?: req->bss->bssid,
+ ETH_ALEN);
+ auth_data->bss = req->bss;
+ auth_data->link_id = req->link_id;
+
+ if (req->auth_data_len >= 4) {
+ if (req->auth_type == NL80211_AUTHTYPE_SAE) {
+ __le16 *pos = (__le16 *) req->auth_data;
+
+ auth_data->sae_trans = le16_to_cpu(pos[0]);
+ auth_data->sae_status = le16_to_cpu(pos[1]);
+ }
+ memcpy(auth_data->data, req->auth_data + 4,
+ req->auth_data_len - 4);
+ auth_data->data_len += req->auth_data_len - 4;
+ }
+
+ /* Check if continuing authentication or trying to authenticate with the
+ * same BSS that we were in the process of authenticating with and avoid
+ * removal and re-addition of the STA entry in
+ * ieee80211_prep_connection().
+ */
+ cont_auth = ifmgd->auth_data && req->bss == ifmgd->auth_data->bss &&
+ ifmgd->auth_data->link_id == req->link_id;
+
+ if (req->ie && req->ie_len) {
+ memcpy(&auth_data->data[auth_data->data_len],
+ req->ie, req->ie_len);
+ auth_data->data_len += req->ie_len;
+ }
+
+ if (req->key && req->key_len) {
+ auth_data->key_len = req->key_len;
+ auth_data->key_idx = req->key_idx;
+ memcpy(auth_data->key, req->key, req->key_len);
+ }
+
+ auth_data->algorithm = auth_alg;
+
+ /* try to authenticate/probe */
+
+ if (ifmgd->auth_data) {
+ if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE) {
+ auth_data->peer_confirmed =
+ ifmgd->auth_data->peer_confirmed;
+ }
+ ieee80211_destroy_auth_data(sdata, cont_auth);
+ }
+
+ /* prep auth_data so we don't go into idle on disassoc */
+ ifmgd->auth_data = auth_data;
+
+ /* If this is continuation of an ongoing SAE authentication exchange
+ * (i.e., request to send SAE Confirm) and the peer has already
+ * confirmed, mark authentication completed since we are about to send
+ * out SAE Confirm.
+ */
+ if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE &&
+ auth_data->peer_confirmed && auth_data->sae_trans == 2)
+ ieee80211_mark_sta_auth(sdata);
+
+ if (ifmgd->associated) {
+ u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
+
+ sdata_info(sdata,
+ "disconnect from AP %pM for new auth to %pM\n",
+ sdata->vif.cfg.ap_addr, auth_data->ap_addr);
+ ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
+ WLAN_REASON_UNSPECIFIED,
+ false, frame_buf);
+
+ ieee80211_report_disconnect(sdata, frame_buf,
+ sizeof(frame_buf), true,
+ WLAN_REASON_UNSPECIFIED,
+ false);
+ }
+
+ sdata_info(sdata, "authenticate with %pM\n", auth_data->ap_addr);
+
+ /* needed for transmitting the auth frame(s) properly */
+ memcpy(sdata->vif.cfg.ap_addr, auth_data->ap_addr, ETH_ALEN);
+
+ err = ieee80211_prep_connection(sdata, req->bss, req->link_id,
+ req->ap_mld_addr, cont_auth, false);
+ if (err)
+ goto err_clear;
+
+ err = ieee80211_auth(sdata);
+ if (err) {
+ sta_info_destroy_addr(sdata, auth_data->ap_addr);
+ goto err_clear;
+ }
+
+ /* hold our own reference */
+ cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
+ return 0;
+
+ err_clear:
+ if (!sdata->vif.valid_links) {
+ eth_zero_addr(sdata->deflink.u.mgd.bssid);
+ ieee80211_link_info_change_notify(sdata, &sdata->deflink,
+ BSS_CHANGED_BSSID);
+ mutex_lock(&sdata->local->mtx);
+ ieee80211_link_release_channel(&sdata->deflink);
+ mutex_unlock(&sdata->local->mtx);
+ }
+ ifmgd->auth_data = NULL;
+ kfree(auth_data);
+ return err;
+}
+
+static ieee80211_conn_flags_t
+ieee80211_setup_assoc_link(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_mgd_assoc_data *assoc_data,
+ struct cfg80211_assoc_request *req,
+ ieee80211_conn_flags_t conn_flags,
+ unsigned int link_id)
+{
+ struct ieee80211_local *local = sdata->local;
+ const struct cfg80211_bss_ies *beacon_ies;
+ struct ieee80211_supported_band *sband;
+ const struct element *ht_elem, *vht_elem;
+ struct ieee80211_link_data *link;
+ struct cfg80211_bss *cbss;
+ struct ieee80211_bss *bss;
+ bool is_5ghz, is_6ghz;
+
+ cbss = assoc_data->link[link_id].bss;
+ if (WARN_ON(!cbss))
+ return 0;
+
+ bss = (void *)cbss->priv;
+
+ sband = local->hw.wiphy->bands[cbss->channel->band];
+ if (WARN_ON(!sband))
+ return 0;
+
+ link = sdata_dereference(sdata->link[link_id], sdata);
+ if (WARN_ON(!link))
+ return 0;
+
+ is_5ghz = cbss->channel->band == NL80211_BAND_5GHZ;
+ is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ;
+
+ /* for MLO connections assume advertising all rates is OK */
+ if (!req->ap_mld_addr) {
+ assoc_data->supp_rates = bss->supp_rates;
+ assoc_data->supp_rates_len = bss->supp_rates_len;
+ }
+
+ /* copy and link elems for the STA profile */
+ if (req->links[link_id].elems_len) {
+ memcpy(assoc_data->ie_pos, req->links[link_id].elems,
+ req->links[link_id].elems_len);
+ assoc_data->link[link_id].elems = assoc_data->ie_pos;
+ assoc_data->link[link_id].elems_len = req->links[link_id].elems_len;
+ assoc_data->ie_pos += req->links[link_id].elems_len;
+ }
+
+ rcu_read_lock();
+ ht_elem = ieee80211_bss_get_elem(cbss, WLAN_EID_HT_OPERATION);
+ if (ht_elem && ht_elem->datalen >= sizeof(struct ieee80211_ht_operation))
+ assoc_data->link[link_id].ap_ht_param =
+ ((struct ieee80211_ht_operation *)(ht_elem->data))->ht_param;
+ else if (!is_6ghz)
+ conn_flags |= IEEE80211_CONN_DISABLE_HT;
+ vht_elem = ieee80211_bss_get_elem(cbss, WLAN_EID_VHT_CAPABILITY);
+ if (vht_elem && vht_elem->datalen >= sizeof(struct ieee80211_vht_cap)) {
+ memcpy(&assoc_data->link[link_id].ap_vht_cap, vht_elem->data,
+ sizeof(struct ieee80211_vht_cap));
+ } else if (is_5ghz) {
+ link_info(link,
+ "VHT capa missing/short, disabling VHT/HE/EHT\n");
+ conn_flags |= IEEE80211_CONN_DISABLE_VHT |
+ IEEE80211_CONN_DISABLE_HE |
+ IEEE80211_CONN_DISABLE_EHT;
+ }
+ rcu_read_unlock();
+
+ link->u.mgd.beacon_crc_valid = false;
+ link->u.mgd.dtim_period = 0;
+ link->u.mgd.have_beacon = false;
+
+ /* override HT/VHT configuration only if the AP and we support it */
+ if (!(conn_flags & IEEE80211_CONN_DISABLE_HT)) {
+ struct ieee80211_sta_ht_cap sta_ht_cap;
+
+ memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
+ ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
+ }
+
+ rcu_read_lock();
+ beacon_ies = rcu_dereference(cbss->beacon_ies);
+ if (beacon_ies) {
+ const struct element *elem;
+ u8 dtim_count = 0;
+
+ ieee80211_get_dtim(beacon_ies, &dtim_count,
+ &link->u.mgd.dtim_period);
+
+ sdata->deflink.u.mgd.have_beacon = true;
+
+ if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
+ link->conf->sync_tsf = beacon_ies->tsf;
+ link->conf->sync_device_ts = bss->device_ts_beacon;
+ link->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)
+ link->conf->profile_periodicity = elem->data[2];
+ else
+ link->conf->profile_periodicity = 0;
+
+ 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))
+ link->conf->ema_ap = true;
+ else
+ link->conf->ema_ap = false;
+ }
+ rcu_read_unlock();
+
+ if (bss->corrupt_data) {
+ char *corrupt_type = "data";
+
+ if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) {
+ if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP)
+ corrupt_type = "beacon and probe response";
+ else
+ corrupt_type = "beacon";
+ } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP) {
+ corrupt_type = "probe response";
+ }
+ sdata_info(sdata, "associating to AP %pM with corrupt %s\n",
+ cbss->bssid, corrupt_type);
+ }
+
+ if (link->u.mgd.req_smps == IEEE80211_SMPS_AUTOMATIC) {
+ if (sdata->u.mgd.powersave)
+ link->smps_mode = IEEE80211_SMPS_DYNAMIC;
+ else
+ link->smps_mode = IEEE80211_SMPS_OFF;
+ } else {
+ link->smps_mode = link->u.mgd.req_smps;
+ }
+
+ return conn_flags;
+}
+
+int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
+ struct cfg80211_assoc_request *req)
+{
+ unsigned int assoc_link_id = req->link_id < 0 ? 0 : req->link_id;
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_mgd_assoc_data *assoc_data;
+ const struct element *ssid_elem;
+ struct ieee80211_vif_cfg *vif_cfg = &sdata->vif.cfg;
+ ieee80211_conn_flags_t conn_flags = 0;
+ struct ieee80211_link_data *link;
+ struct cfg80211_bss *cbss;
+ struct ieee80211_bss *bss;
+ bool override;
+ int i, err;
+ size_t size = sizeof(*assoc_data) + req->ie_len;
+
+ for (i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++)
+ size += req->links[i].elems_len;
+
+ /* FIXME: no support for 4-addr MLO yet */
+ if (sdata->u.mgd.use_4addr && req->link_id >= 0)
+ return -EOPNOTSUPP;
+
+ assoc_data = kzalloc(size, GFP_KERNEL);
+ if (!assoc_data)
+ return -ENOMEM;
+
+ cbss = req->link_id < 0 ? req->bss : req->links[req->link_id].bss;
+
+ rcu_read_lock();
+ ssid_elem = ieee80211_bss_get_elem(cbss, WLAN_EID_SSID);
+ if (!ssid_elem || ssid_elem->datalen > sizeof(assoc_data->ssid)) {
+ rcu_read_unlock();
+ kfree(assoc_data);
+ return -EINVAL;
+ }
+ memcpy(assoc_data->ssid, ssid_elem->data, ssid_elem->datalen);
+ assoc_data->ssid_len = ssid_elem->datalen;
+ memcpy(vif_cfg->ssid, assoc_data->ssid, assoc_data->ssid_len);
+ vif_cfg->ssid_len = assoc_data->ssid_len;
+ rcu_read_unlock();
+
+ if (req->ap_mld_addr) {
+ for (i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) {
+ if (!req->links[i].bss)
+ continue;
+ link = sdata_dereference(sdata->link[i], sdata);
+ if (link)
+ ether_addr_copy(assoc_data->link[i].addr,
+ link->conf->addr);
+ else
+ eth_random_addr(assoc_data->link[i].addr);
+ }
+ } else {
+ memcpy(assoc_data->link[0].addr, sdata->vif.addr, ETH_ALEN);
+ }
+
+ assoc_data->s1g = cbss->channel->band == NL80211_BAND_S1GHZ;
+
+ memcpy(assoc_data->ap_addr,
+ req->ap_mld_addr ?: req->bss->bssid,
+ ETH_ALEN);
+
+ if (ifmgd->associated) {
+ u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
+
+ sdata_info(sdata,
+ "disconnect from AP %pM for new assoc to %pM\n",
+ sdata->vif.cfg.ap_addr, assoc_data->ap_addr);
+ ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
+ WLAN_REASON_UNSPECIFIED,
+ false, frame_buf);
+
+ ieee80211_report_disconnect(sdata, frame_buf,
+ sizeof(frame_buf), true,
+ WLAN_REASON_UNSPECIFIED,
+ false);
+ }
+
+ if (ifmgd->auth_data && !ifmgd->auth_data->done) {
+ err = -EBUSY;
+ goto err_free;
+ }
+
+ if (ifmgd->assoc_data) {
+ err = -EBUSY;
+ goto err_free;
+ }
+
+ if (ifmgd->auth_data) {
+ bool match;
+
+ /* keep sta info, bssid if matching */
+ match = ether_addr_equal(ifmgd->auth_data->ap_addr,
+ assoc_data->ap_addr) &&
+ ifmgd->auth_data->link_id == req->link_id;
+ ieee80211_destroy_auth_data(sdata, match);
+ }
+
+ /* prepare assoc data */
+
+ bss = (void *)cbss->priv;
+ assoc_data->wmm = bss->wmm_used &&
+ (local->hw.queues >= IEEE80211_NUM_ACS);
+
+ /*
+ * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
+ * We still associate in non-HT mode (11a/b/g) if any one of these
+ * ciphers is configured as pairwise.
+ * We can set this to true for non-11n hardware, that'll be checked
+ * separately along with the peer capabilities.
+ */
+ for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) {
+ if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
+ req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
+ req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
+ conn_flags |= IEEE80211_CONN_DISABLE_HT;
+ conn_flags |= IEEE80211_CONN_DISABLE_VHT;
+ conn_flags |= IEEE80211_CONN_DISABLE_HE;
+ conn_flags |= IEEE80211_CONN_DISABLE_EHT;
+ netdev_info(sdata->dev,
+ "disabling HT/VHT/HE due to WEP/TKIP use\n");
+ }
+ }
+
+ /* also disable HT/VHT/HE/EHT if the AP doesn't use WMM */
+ if (!bss->wmm_used) {
+ conn_flags |= IEEE80211_CONN_DISABLE_HT;
+ conn_flags |= IEEE80211_CONN_DISABLE_VHT;
+ conn_flags |= IEEE80211_CONN_DISABLE_HE;
+ conn_flags |= IEEE80211_CONN_DISABLE_EHT;
+ netdev_info(sdata->dev,
+ "disabling HT/VHT/HE as WMM/QoS is not supported by the AP\n");
+ }
+
+ if (req->flags & ASSOC_REQ_DISABLE_HT) {
+ mlme_dbg(sdata, "HT disabled by flag, disabling HT/VHT/HE\n");
+ conn_flags |= IEEE80211_CONN_DISABLE_HT;
+ conn_flags |= IEEE80211_CONN_DISABLE_VHT;
+ conn_flags |= IEEE80211_CONN_DISABLE_HE;
+ conn_flags |= IEEE80211_CONN_DISABLE_EHT;
+ }
+
+ if (req->flags & ASSOC_REQ_DISABLE_VHT) {
+ mlme_dbg(sdata, "VHT disabled by flag, disabling VHT\n");
+ conn_flags |= IEEE80211_CONN_DISABLE_VHT;
+ }
+
+ if (req->flags & ASSOC_REQ_DISABLE_HE) {
+ mlme_dbg(sdata, "HE disabled by flag, disabling HE/EHT\n");
+ conn_flags |= IEEE80211_CONN_DISABLE_HE;
+ conn_flags |= IEEE80211_CONN_DISABLE_EHT;
+ }
+
+ if (req->flags & ASSOC_REQ_DISABLE_EHT)
+ conn_flags |= IEEE80211_CONN_DISABLE_EHT;
+
+ memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
+ memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
+ sizeof(ifmgd->ht_capa_mask));
+
+ memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa));
+ memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
+ sizeof(ifmgd->vht_capa_mask));
+
+ memcpy(&ifmgd->s1g_capa, &req->s1g_capa, sizeof(ifmgd->s1g_capa));
+ memcpy(&ifmgd->s1g_capa_mask, &req->s1g_capa_mask,
+ sizeof(ifmgd->s1g_capa_mask));
+
+ if (req->ie && req->ie_len) {
+ memcpy(assoc_data->ie, req->ie, req->ie_len);
+ assoc_data->ie_len = req->ie_len;
+ assoc_data->ie_pos = assoc_data->ie + assoc_data->ie_len;
+ } else {
+ assoc_data->ie_pos = assoc_data->ie;
+ }
+
+ if (req->fils_kek) {
+ /* should already be checked in cfg80211 - so warn */
+ if (WARN_ON(req->fils_kek_len > FILS_MAX_KEK_LEN)) {
+ err = -EINVAL;
+ goto err_free;
+ }
+ memcpy(assoc_data->fils_kek, req->fils_kek,
+ req->fils_kek_len);
+ assoc_data->fils_kek_len = req->fils_kek_len;
+ }
+
+ if (req->fils_nonces)
+ memcpy(assoc_data->fils_nonces, req->fils_nonces,
+ 2 * FILS_NONCE_LEN);
+
+ /* default timeout */
+ assoc_data->timeout = jiffies;
+ assoc_data->timeout_started = true;
+
+ assoc_data->assoc_link_id = assoc_link_id;
+
+ if (req->ap_mld_addr) {
+ for (i = 0; i < ARRAY_SIZE(assoc_data->link); i++) {
+ assoc_data->link[i].conn_flags = conn_flags;
+ assoc_data->link[i].bss = req->links[i].bss;
+ }
+
+ /* if there was no authentication, set up the link */
+ err = ieee80211_vif_set_links(sdata, BIT(assoc_link_id));
+ if (err)
+ goto err_clear;
+ } else {
+ assoc_data->link[0].conn_flags = conn_flags;
+ assoc_data->link[0].bss = cbss;
+ }
+
+ link = sdata_dereference(sdata->link[assoc_link_id], sdata);
+ if (WARN_ON(!link)) {
+ err = -EINVAL;
+ goto err_clear;
+ }
+
+ /* keep old conn_flags from ieee80211_prep_channel() from auth */
+ conn_flags |= link->u.mgd.conn_flags;
+ conn_flags |= ieee80211_setup_assoc_link(sdata, assoc_data, req,
+ conn_flags, assoc_link_id);
+ override = link->u.mgd.conn_flags != conn_flags;
+ link->u.mgd.conn_flags |= conn_flags;
+
+ if (WARN((sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD) &&
+ ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK),
+ "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"))
+ sdata->vif.driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
+
+ if (bss->wmm_used && bss->uapsd_supported &&
+ (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD)) {
+ assoc_data->uapsd = true;
+ ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
+ } else {
+ assoc_data->uapsd = false;
+ ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
+ }
+
+ if (req->prev_bssid)
+ memcpy(assoc_data->prev_ap_addr, req->prev_bssid, ETH_ALEN);
+
+ if (req->use_mfp) {
+ ifmgd->mfp = IEEE80211_MFP_REQUIRED;
+ ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
+ } else {
+ ifmgd->mfp = IEEE80211_MFP_DISABLED;
+ ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
+ }
+
+ if (req->flags & ASSOC_REQ_USE_RRM)
+ ifmgd->flags |= IEEE80211_STA_ENABLE_RRM;
+ else
+ ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM;
+
+ if (req->crypto.control_port)
+ ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
+ else
+ ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
+
+ sdata->control_port_protocol = req->crypto.control_port_ethertype;
+ sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
+ sdata->control_port_over_nl80211 =
+ req->crypto.control_port_over_nl80211;
+ sdata->control_port_no_preauth = req->crypto.control_port_no_preauth;
+
+ /* kick off associate process */
+ ifmgd->assoc_data = assoc_data;
+
+ for (i = 0; i < ARRAY_SIZE(assoc_data->link); i++) {
+ if (!assoc_data->link[i].bss)
+ continue;
+ if (i == assoc_data->assoc_link_id)
+ continue;
+ /* only calculate the flags, hence link == NULL */
+ err = ieee80211_prep_channel(sdata, NULL, assoc_data->link[i].bss,
+ &assoc_data->link[i].conn_flags);
+ if (err)
+ goto err_clear;
+ }
+
+ /* needed for transmitting the assoc frames properly */
+ memcpy(sdata->vif.cfg.ap_addr, assoc_data->ap_addr, ETH_ALEN);
+
+ err = ieee80211_prep_connection(sdata, cbss, req->link_id,
+ req->ap_mld_addr, true, override);
+ if (err)
+ goto err_clear;
+
+ assoc_data->link[assoc_data->assoc_link_id].conn_flags =
+ link->u.mgd.conn_flags;
+
+ if (ieee80211_hw_check(&sdata->local->hw, NEED_DTIM_BEFORE_ASSOC)) {
+ const struct cfg80211_bss_ies *beacon_ies;
+
+ rcu_read_lock();
+ beacon_ies = rcu_dereference(req->bss->beacon_ies);
+
+ if (beacon_ies) {
+ /*
+ * Wait up to one beacon interval ...
+ * should this be more if we miss one?
+ */
+ sdata_info(sdata, "waiting for beacon from %pM\n",
+ link->u.mgd.bssid);
+ assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
+ assoc_data->timeout_started = true;
+ assoc_data->need_beacon = true;
+ }
+ rcu_read_unlock();
+ }
+
+ run_again(sdata, assoc_data->timeout);
+
+ return 0;
+ err_clear:
+ eth_zero_addr(sdata->deflink.u.mgd.bssid);
+ ieee80211_link_info_change_notify(sdata, &sdata->deflink,
+ BSS_CHANGED_BSSID);
+ ifmgd->assoc_data = NULL;
+ err_free:
+ kfree(assoc_data);
+ return err;
+}
+
+int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
+ struct cfg80211_deauth_request *req)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
+ bool tx = !req->local_state_change;
+ struct ieee80211_prep_tx_info info = {
+ .subtype = IEEE80211_STYPE_DEAUTH,
+ };
+
+ if (ifmgd->auth_data &&
+ ether_addr_equal(ifmgd->auth_data->ap_addr, req->bssid)) {
+ sdata_info(sdata,
+ "aborting authentication with %pM by local choice (Reason: %u=%s)\n",
+ req->bssid, req->reason_code,
+ ieee80211_get_reason_code_string(req->reason_code));
+
+ drv_mgd_prepare_tx(sdata->local, sdata, &info);
+ ieee80211_send_deauth_disassoc(sdata, req->bssid, req->bssid,
+ IEEE80211_STYPE_DEAUTH,
+ req->reason_code, tx,
+ frame_buf);
+ ieee80211_destroy_auth_data(sdata, false);
+ ieee80211_report_disconnect(sdata, frame_buf,
+ sizeof(frame_buf), true,
+ req->reason_code, false);
+ drv_mgd_complete_tx(sdata->local, sdata, &info);
+ return 0;
+ }
+
+ if (ifmgd->assoc_data &&
+ ether_addr_equal(ifmgd->assoc_data->ap_addr, req->bssid)) {
+ sdata_info(sdata,
+ "aborting association with %pM by local choice (Reason: %u=%s)\n",
+ req->bssid, req->reason_code,
+ ieee80211_get_reason_code_string(req->reason_code));
+
+ drv_mgd_prepare_tx(sdata->local, sdata, &info);
+ ieee80211_send_deauth_disassoc(sdata, req->bssid, req->bssid,
+ IEEE80211_STYPE_DEAUTH,
+ req->reason_code, tx,
+ frame_buf);
+ ieee80211_destroy_assoc_data(sdata, ASSOC_ABANDON);
+ ieee80211_report_disconnect(sdata, frame_buf,
+ sizeof(frame_buf), true,
+ req->reason_code, false);
+ return 0;
+ }
+
+ if (ifmgd->associated &&
+ ether_addr_equal(sdata->vif.cfg.ap_addr, req->bssid)) {
+ sdata_info(sdata,
+ "deauthenticating from %pM by local choice (Reason: %u=%s)\n",
+ req->bssid, req->reason_code,
+ ieee80211_get_reason_code_string(req->reason_code));
+
+ ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
+ req->reason_code, tx, frame_buf);
+ ieee80211_report_disconnect(sdata, frame_buf,
+ sizeof(frame_buf), true,
+ req->reason_code, false);
+ drv_mgd_complete_tx(sdata->local, sdata, &info);
+ return 0;
+ }
+
+ return -ENOTCONN;
+}
+
+int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
+ struct cfg80211_disassoc_request *req)
+{
+ u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
+
+ if (!sdata->u.mgd.associated ||
+ memcmp(sdata->vif.cfg.ap_addr, req->ap_addr, ETH_ALEN))
+ return -ENOTCONN;
+
+ sdata_info(sdata,
+ "disassociating from %pM by local choice (Reason: %u=%s)\n",
+ req->ap_addr, req->reason_code,
+ ieee80211_get_reason_code_string(req->reason_code));
+
+ ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
+ req->reason_code, !req->local_state_change,
+ frame_buf);
+
+ ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
+ req->reason_code, false);
+
+ return 0;
+}
+
+void ieee80211_mgd_stop_link(struct ieee80211_link_data *link)
+{
+ cancel_work_sync(&link->u.mgd.request_smps_work);
+ cancel_work_sync(&link->u.mgd.chswitch_work);
+}
+
+void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+
+ /*
+ * Make sure some work items will not run after this,
+ * they will not do anything but might not have been
+ * cancelled when disconnecting.
+ */
+ cancel_work_sync(&ifmgd->monitor_work);
+ cancel_work_sync(&ifmgd->beacon_connection_loss_work);
+ cancel_work_sync(&ifmgd->csa_connection_drop_work);
+ cancel_delayed_work_sync(&ifmgd->tdls_peer_del_work);
+
+ sdata_lock(sdata);
+ if (ifmgd->assoc_data)
+ ieee80211_destroy_assoc_data(sdata, ASSOC_TIMEOUT);
+ if (ifmgd->auth_data)
+ ieee80211_destroy_auth_data(sdata, false);
+ spin_lock_bh(&ifmgd->teardown_lock);
+ if (ifmgd->teardown_skb) {
+ kfree_skb(ifmgd->teardown_skb);
+ ifmgd->teardown_skb = NULL;
+ ifmgd->orig_teardown_skb = NULL;
+ }
+ kfree(ifmgd->assoc_req_ies);
+ ifmgd->assoc_req_ies = NULL;
+ ifmgd->assoc_req_ies_len = 0;
+ spin_unlock_bh(&ifmgd->teardown_lock);
+ del_timer_sync(&ifmgd->timer);
+ 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);
+
+static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata,
+ int rssi_min_thold,
+ int rssi_max_thold)
+{
+ trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold);
+
+ if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
+ return;
+
+ /*
+ * Scale up threshold values before storing it, as the RSSI averaging
+ * algorithm uses a scaled up value as well. Change this scaling
+ * factor if the RSSI averaging algorithm changes.
+ */
+ sdata->u.mgd.rssi_min_thold = rssi_min_thold*16;
+ sdata->u.mgd.rssi_max_thold = rssi_max_thold*16;
+}
+
+void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif,
+ int rssi_min_thold,
+ int rssi_max_thold)
+{
+ struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+
+ WARN_ON(rssi_min_thold == rssi_max_thold ||
+ rssi_min_thold > rssi_max_thold);
+
+ _ieee80211_enable_rssi_reports(sdata, rssi_min_thold,
+ rssi_max_thold);
+}
+EXPORT_SYMBOL(ieee80211_enable_rssi_reports);
+
+void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif)
+{
+ struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+
+ _ieee80211_enable_rssi_reports(sdata, 0, 0);
+}
+EXPORT_SYMBOL(ieee80211_disable_rssi_reports);