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-rw-r--r--net/mac80211/scan.c570
1 files changed, 286 insertions, 284 deletions
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index dc3cdee51e66..5ef315ed3b0f 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -9,7 +9,7 @@
* Copyright 2007, Michael Wu <flamingice@sourmilk.net>
* Copyright 2013-2015 Intel Mobile Communications GmbH
* Copyright 2016-2017 Intel Deutschland GmbH
- * Copyright (C) 2018-2021 Intel Corporation
+ * Copyright (C) 2018-2025 Intel Corporation
*/
#include <linux/if_arp.h>
@@ -55,27 +55,49 @@ static bool is_uapsd_supported(struct ieee802_11_elems *elems)
return qos_info & IEEE80211_WMM_IE_AP_QOSINFO_UAPSD;
}
-static void
-ieee80211_update_bss_from_elems(struct ieee80211_local *local,
- struct ieee80211_bss *bss,
- struct ieee802_11_elems *elems,
- struct ieee80211_rx_status *rx_status,
- bool beacon)
+struct inform_bss_update_data {
+ struct ieee80211_rx_status *rx_status;
+ bool beacon;
+};
+
+void ieee80211_inform_bss(struct wiphy *wiphy,
+ struct cfg80211_bss *cbss,
+ const struct cfg80211_bss_ies *ies,
+ void *data)
{
+ struct ieee80211_local *local = wiphy_priv(wiphy);
+ struct inform_bss_update_data *update_data = data;
+ struct ieee80211_bss *bss = (void *)cbss->priv;
+ struct ieee80211_rx_status *rx_status;
+ struct ieee802_11_elems *elems;
int clen, srlen;
- if (beacon)
+ /* This happens while joining an IBSS */
+ if (!update_data)
+ return;
+
+ elems = ieee802_11_parse_elems(ies->data, ies->len,
+ update_data->beacon ?
+ IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON :
+ IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP,
+ NULL);
+ if (!elems)
+ return;
+
+ rx_status = update_data->rx_status;
+
+ if (update_data->beacon)
bss->device_ts_beacon = rx_status->device_timestamp;
else
bss->device_ts_presp = rx_status->device_timestamp;
if (elems->parse_error) {
- if (beacon)
+ if (update_data->beacon)
bss->corrupt_data |= IEEE80211_BSS_CORRUPT_BEACON;
else
bss->corrupt_data |= IEEE80211_BSS_CORRUPT_PROBE_RESP;
} else {
- if (beacon)
+ if (update_data->beacon)
bss->corrupt_data &= ~IEEE80211_BSS_CORRUPT_BEACON;
else
bss->corrupt_data &= ~IEEE80211_BSS_CORRUPT_PROBE_RESP;
@@ -124,7 +146,7 @@ ieee80211_update_bss_from_elems(struct ieee80211_local *local,
bss->valid_data |= IEEE80211_BSS_VALID_WMM;
}
- if (beacon) {
+ if (update_data->beacon) {
struct ieee80211_supported_band *sband =
local->hw.wiphy->bands[rx_status->band];
if (!(rx_status->encoding == RX_ENC_HT) &&
@@ -138,6 +160,8 @@ ieee80211_update_bss_from_elems(struct ieee80211_local *local,
le32_to_cpu(elems->vht_cap_elem->vht_cap_info);
else
bss->vht_cap_info = 0;
+
+ kfree(elems);
}
struct ieee80211_bss *
@@ -148,16 +172,17 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
{
bool beacon = ieee80211_is_beacon(mgmt->frame_control) ||
ieee80211_is_s1g_beacon(mgmt->frame_control);
- struct cfg80211_bss *cbss, *non_tx_cbss;
- struct ieee80211_bss *bss, *non_tx_bss;
+ struct cfg80211_bss *cbss;
+ struct inform_bss_update_data update_data = {
+ .rx_status = rx_status,
+ .beacon = beacon,
+ };
struct cfg80211_inform_bss bss_meta = {
.boottime_ns = rx_status->boottime_ns,
+ .drv_data = (void *)&update_data,
};
bool signal_valid;
struct ieee80211_sub_if_data *scan_sdata;
- struct ieee802_11_elems *elems;
- size_t baselen;
- u8 *elements;
if (rx_status->flag & RX_FLAG_NO_SIGNAL_VAL)
bss_meta.signal = 0; /* invalid signal indication */
@@ -166,12 +191,6 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
else if (ieee80211_hw_check(&local->hw, SIGNAL_UNSPEC))
bss_meta.signal = (rx_status->signal * 100) / local->hw.max_signal;
- bss_meta.scan_width = NL80211_BSS_CHAN_WIDTH_20;
- if (rx_status->bw == RATE_INFO_BW_5)
- bss_meta.scan_width = NL80211_BSS_CHAN_WIDTH_5;
- else if (rx_status->bw == RATE_INFO_BW_10)
- bss_meta.scan_width = NL80211_BSS_CHAN_WIDTH_10;
-
bss_meta.chan = channel;
rcu_read_lock();
@@ -179,11 +198,32 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
if (scan_sdata && scan_sdata->vif.type == NL80211_IFTYPE_STATION &&
scan_sdata->vif.cfg.assoc &&
ieee80211_have_rx_timestamp(rx_status)) {
- bss_meta.parent_tsf =
- ieee80211_calculate_rx_timestamp(local, rx_status,
- len + FCS_LEN, 24);
- ether_addr_copy(bss_meta.parent_bssid,
- scan_sdata->vif.bss_conf.bssid);
+ struct ieee80211_bss_conf *link_conf = NULL;
+
+ /* for an MLO connection, set the TSF data only in case we have
+ * an indication on which of the links the frame was received
+ */
+ if (ieee80211_vif_is_mld(&scan_sdata->vif)) {
+ if (rx_status->link_valid) {
+ s8 link_id = rx_status->link_id;
+
+ link_conf =
+ rcu_dereference(scan_sdata->vif.link_conf[link_id]);
+ }
+ } else {
+ link_conf = &scan_sdata->vif.bss_conf;
+ }
+
+ if (link_conf) {
+ bss_meta.parent_tsf =
+ ieee80211_calculate_rx_timestamp(local,
+ rx_status,
+ len + FCS_LEN,
+ 24);
+
+ ether_addr_copy(bss_meta.parent_bssid,
+ link_conf->bssid);
+ }
}
rcu_read_unlock();
@@ -192,73 +232,55 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
if (!cbss)
return NULL;
- if (ieee80211_is_probe_resp(mgmt->frame_control)) {
- elements = mgmt->u.probe_resp.variable;
- baselen = offsetof(struct ieee80211_mgmt,
- u.probe_resp.variable);
- } else if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
- struct ieee80211_ext *ext = (void *) mgmt;
-
- baselen = offsetof(struct ieee80211_ext, u.s1g_beacon.variable);
- elements = ext->u.s1g_beacon.variable;
- } else {
- baselen = offsetof(struct ieee80211_mgmt, u.beacon.variable);
- elements = mgmt->u.beacon.variable;
- }
-
- if (baselen > len)
- return NULL;
-
- elems = ieee802_11_parse_elems(elements, len - baselen, false, cbss);
- if (!elems)
- return NULL;
-
/* In case the signal is invalid update the status */
signal_valid = channel == cbss->channel;
if (!signal_valid)
rx_status->flag |= RX_FLAG_NO_SIGNAL_VAL;
- bss = (void *)cbss->priv;
- ieee80211_update_bss_from_elems(local, bss, elems, rx_status, beacon);
- kfree(elems);
-
- list_for_each_entry(non_tx_cbss, &cbss->nontrans_list, nontrans_list) {
- non_tx_bss = (void *)non_tx_cbss->priv;
-
- elems = ieee802_11_parse_elems(elements, len - baselen, false,
- non_tx_cbss);
- if (!elems)
- continue;
-
- ieee80211_update_bss_from_elems(local, non_tx_bss, elems,
- rx_status, beacon);
- kfree(elems);
- }
-
- return bss;
+ return (void *)cbss->priv;
}
static bool ieee80211_scan_accept_presp(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_channel *channel,
u32 scan_flags, const u8 *da)
{
+ struct ieee80211_link_data *link_sdata;
+ u8 link_id;
+
if (!sdata)
return false;
- /* accept broadcast for OCE */
- if (scan_flags & NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP &&
- is_broadcast_ether_addr(da))
+
+ /* accept broadcast on 6 GHz and for OCE */
+ if (is_broadcast_ether_addr(da) &&
+ (channel->band == NL80211_BAND_6GHZ ||
+ scan_flags & NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP))
return true;
+
if (scan_flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
return true;
- return ether_addr_equal(da, sdata->vif.addr);
+
+ if (ether_addr_equal(da, sdata->vif.addr))
+ return true;
+
+ for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
+ link_sdata = rcu_dereference(sdata->link[link_id]);
+ if (!link_sdata)
+ continue;
+
+ if (ether_addr_equal(da, link_sdata->conf->addr))
+ return true;
+ }
+
+ return false;
}
void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb)
{
struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
- struct ieee80211_sub_if_data *sdata1, *sdata2;
struct ieee80211_mgmt *mgmt = (void *)skb->data;
struct ieee80211_bss *bss;
struct ieee80211_channel *channel;
+ struct ieee80211_ext *ext;
size_t min_hdr_len = offsetof(struct ieee80211_mgmt,
u.probe_resp.variable);
@@ -268,38 +290,43 @@ void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb)
return;
if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
- if (ieee80211_is_s1g_short_beacon(mgmt->frame_control))
- min_hdr_len = offsetof(struct ieee80211_ext,
- u.s1g_short_beacon.variable);
- else
- min_hdr_len = offsetof(struct ieee80211_ext,
- u.s1g_beacon);
+ ext = (struct ieee80211_ext *)mgmt;
+ min_hdr_len =
+ offsetof(struct ieee80211_ext, u.s1g_beacon.variable) +
+ ieee80211_s1g_optional_len(ext->frame_control);
}
if (skb->len < min_hdr_len)
return;
- sdata1 = rcu_dereference(local->scan_sdata);
- sdata2 = rcu_dereference(local->sched_scan_sdata);
-
- if (likely(!sdata1 && !sdata2))
- return;
-
if (test_and_clear_bit(SCAN_BEACON_WAIT, &local->scanning)) {
/*
* we were passive scanning because of radar/no-IR, but
* the beacon/proberesp rx gives us an opportunity to upgrade
* to active scan
*/
- set_bit(SCAN_BEACON_DONE, &local->scanning);
- ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
+ set_bit(SCAN_BEACON_DONE, &local->scanning);
+ wiphy_delayed_work_queue(local->hw.wiphy, &local->scan_work, 0);
}
+ channel = ieee80211_get_channel_khz(local->hw.wiphy,
+ ieee80211_rx_status_to_khz(rx_status));
+
+ if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
+ return;
+
if (ieee80211_is_probe_resp(mgmt->frame_control)) {
+ struct ieee80211_sub_if_data *sdata1, *sdata2;
struct cfg80211_scan_request *scan_req;
struct cfg80211_sched_scan_request *sched_scan_req;
u32 scan_req_flags = 0, sched_scan_req_flags = 0;
+ sdata1 = rcu_dereference(local->scan_sdata);
+ sdata2 = rcu_dereference(local->sched_scan_sdata);
+
+ if (likely(!sdata1 && !sdata2))
+ return;
+
scan_req = rcu_dereference(local->scan_req);
sched_scan_req = rcu_dereference(local->sched_scan_req);
@@ -312,17 +339,21 @@ void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb)
/* ignore ProbeResp to foreign address or non-bcast (OCE)
* unless scanning with randomised address
*/
- if (!ieee80211_scan_accept_presp(sdata1, scan_req_flags,
+ if (!ieee80211_scan_accept_presp(sdata1, channel,
+ scan_req_flags,
mgmt->da) &&
- !ieee80211_scan_accept_presp(sdata2, sched_scan_req_flags,
+ !ieee80211_scan_accept_presp(sdata2, channel,
+ sched_scan_req_flags,
mgmt->da))
return;
+ } else {
+ /* Beacons are expected only with broadcast address */
+ if (!is_broadcast_ether_addr(mgmt->da))
+ return;
}
- channel = ieee80211_get_channel_khz(local->hw.wiphy,
- ieee80211_rx_status_to_khz(rx_status));
-
- if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
+ /* Do not update the BSS table in case of only monitor interfaces */
+ if (local->open_count == local->monitors)
return;
bss = ieee80211_bss_info_update(local, rx_status,
@@ -332,22 +363,11 @@ void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb)
ieee80211_rx_bss_put(local, bss);
}
-static void
-ieee80211_prepare_scan_chandef(struct cfg80211_chan_def *chandef,
- enum nl80211_bss_scan_width scan_width)
+static void ieee80211_prepare_scan_chandef(struct cfg80211_chan_def *chandef)
{
memset(chandef, 0, sizeof(*chandef));
- switch (scan_width) {
- case NL80211_BSS_CHAN_WIDTH_5:
- chandef->width = NL80211_CHAN_WIDTH_5;
- break;
- case NL80211_BSS_CHAN_WIDTH_10:
- chandef->width = NL80211_CHAN_WIDTH_10;
- break;
- default:
- chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
- break;
- }
+
+ chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
}
/* return false if no more work */
@@ -357,45 +377,46 @@ static bool ieee80211_prep_hw_scan(struct ieee80211_sub_if_data *sdata)
struct cfg80211_scan_request *req;
struct cfg80211_chan_def chandef;
u8 bands_used = 0;
- int i, ielen, n_chans;
+ int i, ielen;
+ u32 *n_chans;
u32 flags = 0;
req = rcu_dereference_protected(local->scan_req,
- lockdep_is_held(&local->mtx));
+ lockdep_is_held(&local->hw.wiphy->mtx));
if (test_bit(SCAN_HW_CANCELLED, &local->scanning))
return false;
if (ieee80211_hw_check(&local->hw, SINGLE_SCAN_ON_ALL_BANDS)) {
+ local->hw_scan_req->req.n_channels = req->n_channels;
+
for (i = 0; i < req->n_channels; i++) {
local->hw_scan_req->req.channels[i] = req->channels[i];
bands_used |= BIT(req->channels[i]->band);
}
-
- n_chans = req->n_channels;
} else {
do {
if (local->hw_scan_band == NUM_NL80211_BANDS)
return false;
- n_chans = 0;
+ n_chans = &local->hw_scan_req->req.n_channels;
+ *n_chans = 0;
for (i = 0; i < req->n_channels; i++) {
if (req->channels[i]->band !=
local->hw_scan_band)
continue;
- local->hw_scan_req->req.channels[n_chans] =
+ local->hw_scan_req->req.channels[(*n_chans)++] =
req->channels[i];
- n_chans++;
+
bands_used |= BIT(req->channels[i]->band);
}
local->hw_scan_band++;
- } while (!n_chans);
+ } while (!*n_chans);
}
- local->hw_scan_req->req.n_channels = n_chans;
- ieee80211_prepare_scan_chandef(&chandef, req->scan_width);
+ ieee80211_prepare_scan_chandef(&chandef);
if (req->flags & NL80211_SCAN_FLAG_MIN_PREQ_CONTENT)
flags |= IEEE80211_PROBE_FLAG_MIN_CONTENT;
@@ -407,6 +428,8 @@ static bool ieee80211_prep_hw_scan(struct ieee80211_sub_if_data *sdata)
req->ie, req->ie_len,
bands_used, req->rates, &chandef,
flags);
+ if (ielen < 0)
+ return false;
local->hw_scan_req->req.ie_len = ielen;
local->hw_scan_req->req.no_cck = req->no_cck;
ether_addr_copy(local->hw_scan_req->req.mac_addr, req->mac_addr);
@@ -426,7 +449,7 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
struct ieee80211_sub_if_data *scan_sdata;
struct ieee80211_sub_if_data *sdata;
- lockdep_assert_held(&local->mtx);
+ lockdep_assert_wiphy(local->hw.wiphy);
/*
* It's ok to abort a not-yet-running scan (that
@@ -441,7 +464,7 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
return;
scan_sdata = rcu_dereference_protected(local->scan_sdata,
- lockdep_is_held(&local->mtx));
+ lockdep_is_held(&local->hw.wiphy->mtx));
if (hw_scan && !aborted &&
!ieee80211_hw_check(&local->hw, SINGLE_SCAN_ON_ALL_BANDS) &&
@@ -450,7 +473,7 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
rc = drv_hw_scan(local,
rcu_dereference_protected(local->scan_sdata,
- lockdep_is_held(&local->mtx)),
+ lockdep_is_held(&local->hw.wiphy->mtx)),
local->hw_scan_req);
if (rc == 0)
@@ -467,7 +490,7 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
local->hw_scan_req = NULL;
scan_req = rcu_dereference_protected(local->scan_req,
- lockdep_is_held(&local->mtx));
+ lockdep_is_held(&local->hw.wiphy->mtx));
RCU_INIT_POINTER(local->scan_req, NULL);
RCU_INIT_POINTER(local->scan_sdata, NULL);
@@ -483,7 +506,7 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
}
/* Set power back to normal operating levels. */
- ieee80211_hw_config(local, 0);
+ ieee80211_hw_conf_chan(local);
if (!hw_scan && was_scanning) {
ieee80211_configure_filter(local);
@@ -500,9 +523,9 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
* the scan was in progress; if there was none this will
* just be a no-op for the particular interface.
*/
- list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+ list_for_each_entry(sdata, &local->interfaces, list) {
if (ieee80211_sdata_running(sdata))
- ieee80211_queue_work(&sdata->local->hw, &sdata->work);
+ wiphy_work_queue(sdata->local->hw.wiphy, &sdata->work);
}
if (was_scanning)
@@ -522,7 +545,7 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw,
memcpy(&local->scan_info, info, sizeof(*info));
- ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
+ wiphy_delayed_work_queue(local->hw.wiphy, &local->scan_work, 0);
}
EXPORT_SYMBOL(ieee80211_scan_completed);
@@ -530,7 +553,7 @@ static int ieee80211_start_sw_scan(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata)
{
/* Software scan is not supported in multi-channel cases */
- if (local->use_chanctx)
+ if (!local->emulate_chanctx)
return -EOPNOTSUPP;
/*
@@ -560,41 +583,42 @@ static int ieee80211_start_sw_scan(struct ieee80211_local *local,
ieee80211_configure_filter(local);
/* We need to set power level at maximum rate for scanning. */
- ieee80211_hw_config(local, 0);
+ ieee80211_hw_conf_chan(local);
- ieee80211_queue_delayed_work(&local->hw,
- &local->scan_work, 0);
+ wiphy_delayed_work_queue(local->hw.wiphy, &local->scan_work, 0);
return 0;
}
-static bool __ieee80211_can_leave_ch(struct ieee80211_sub_if_data *sdata)
+static bool __ieee80211_can_leave_ch(struct ieee80211_sub_if_data *sdata,
+ struct cfg80211_scan_request *req)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_sub_if_data *sdata_iter;
+ unsigned int link_id;
+
+ lockdep_assert_wiphy(local->hw.wiphy);
- if (!ieee80211_is_radar_required(local))
+ if (!ieee80211_is_radar_required(local, req))
return true;
if (!regulatory_pre_cac_allowed(local->hw.wiphy))
return false;
- mutex_lock(&local->iflist_mtx);
list_for_each_entry(sdata_iter, &local->interfaces, list) {
- if (sdata_iter->wdev.cac_started) {
- mutex_unlock(&local->iflist_mtx);
- return false;
- }
+ for_each_valid_link(&sdata_iter->wdev, link_id)
+ if (sdata_iter->wdev.links[link_id].cac_started)
+ return false;
}
- mutex_unlock(&local->iflist_mtx);
return true;
}
static bool ieee80211_can_scan(struct ieee80211_local *local,
- struct ieee80211_sub_if_data *sdata)
+ struct ieee80211_sub_if_data *sdata,
+ struct cfg80211_scan_request *req)
{
- if (!__ieee80211_can_leave_ch(sdata))
+ if (!__ieee80211_can_leave_ch(sdata, req))
return false;
if (!list_empty(&local->roc_list))
@@ -609,19 +633,23 @@ static bool ieee80211_can_scan(struct ieee80211_local *local,
void ieee80211_run_deferred_scan(struct ieee80211_local *local)
{
- lockdep_assert_held(&local->mtx);
+ struct cfg80211_scan_request *req;
+
+ lockdep_assert_wiphy(local->hw.wiphy);
if (!local->scan_req || local->scanning)
return;
+ req = wiphy_dereference(local->hw.wiphy, local->scan_req);
if (!ieee80211_can_scan(local,
rcu_dereference_protected(
local->scan_sdata,
- lockdep_is_held(&local->mtx))))
+ lockdep_is_held(&local->hw.wiphy->mtx)),
+ req))
return;
- ieee80211_queue_delayed_work(&local->hw, &local->scan_work,
- round_jiffies_relative(0));
+ wiphy_delayed_work_queue(local->hw.wiphy, &local->scan_work,
+ round_jiffies_relative(0));
}
static void ieee80211_send_scan_probe_req(struct ieee80211_sub_if_data *sdata,
@@ -648,6 +676,7 @@ static void ieee80211_send_scan_probe_req(struct ieee80211_sub_if_data *sdata,
cpu_to_le16(IEEE80211_SN_TO_SEQ(sn));
}
IEEE80211_SKB_CB(skb)->flags |= tx_flags;
+ IEEE80211_SKB_CB(skb)->control.flags |= IEEE80211_TX_CTRL_DONT_USE_RATE_MASK;
ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band);
}
}
@@ -662,7 +691,7 @@ static void ieee80211_scan_state_send_probe(struct ieee80211_local *local,
u32 flags = 0, tx_flags;
scan_req = rcu_dereference_protected(local->scan_req,
- lockdep_is_held(&local->mtx));
+ lockdep_is_held(&local->hw.wiphy->mtx));
tx_flags = IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
if (scan_req->no_cck)
@@ -673,7 +702,7 @@ static void ieee80211_scan_state_send_probe(struct ieee80211_local *local,
flags |= IEEE80211_PROBE_FLAG_RANDOM_SN;
sdata = rcu_dereference_protected(local->scan_sdata,
- lockdep_is_held(&local->mtx));
+ lockdep_is_held(&local->hw.wiphy->mtx));
for (i = 0; i < scan_req->n_ssids; i++)
ieee80211_send_scan_probe_req(
@@ -687,7 +716,10 @@ static void ieee80211_scan_state_send_probe(struct ieee80211_local *local,
* After sending probe requests, wait for probe responses
* on the channel.
*/
- *next_delay = IEEE80211_CHANNEL_TIME;
+ *next_delay = msecs_to_jiffies(scan_req->duration) >
+ IEEE80211_PROBE_DELAY + IEEE80211_CHANNEL_TIME ?
+ msecs_to_jiffies(scan_req->duration) - IEEE80211_PROBE_DELAY :
+ IEEE80211_CHANNEL_TIME;
local->next_scan_state = SCAN_DECISION;
}
@@ -698,15 +730,22 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
bool hw_scan = local->ops->hw_scan;
int rc;
- lockdep_assert_held(&local->mtx);
+ lockdep_assert_wiphy(local->hw.wiphy);
if (local->scan_req)
return -EBUSY;
- if (!__ieee80211_can_leave_ch(sdata))
+ /* For an MLO connection, if a link ID was specified, validate that it
+ * is indeed active.
+ */
+ if (ieee80211_vif_is_mld(&sdata->vif) && req->tsf_report_link_id >= 0 &&
+ !(sdata->vif.active_links & BIT(req->tsf_report_link_id)))
+ return -EINVAL;
+
+ if (!__ieee80211_can_leave_ch(sdata, req))
return -EBUSY;
- if (!ieee80211_can_scan(local, sdata)) {
+ if (!ieee80211_can_scan(local, sdata, req)) {
/* wait for the work to finish/time out */
rcu_assign_pointer(local->scan_req, req);
rcu_assign_pointer(local->scan_sdata, sdata);
@@ -733,15 +772,21 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
local->hw_scan_ies_bufsize *= n_bands;
}
- local->hw_scan_req = kmalloc(
- sizeof(*local->hw_scan_req) +
- req->n_channels * sizeof(req->channels[0]) +
- local->hw_scan_ies_bufsize, GFP_KERNEL);
+ local->hw_scan_req = kmalloc(struct_size(local->hw_scan_req,
+ req.channels,
+ req->n_channels) +
+ local->hw_scan_ies_bufsize,
+ GFP_KERNEL);
if (!local->hw_scan_req)
return -ENOMEM;
local->hw_scan_req->req.ssids = req->ssids;
local->hw_scan_req->req.n_ssids = req->n_ssids;
+ /* None of the channels are actually set
+ * up but let UBSAN know the boundaries.
+ */
+ local->hw_scan_req->req.n_channels = req->n_channels;
+
ies = (u8 *)local->hw_scan_req +
sizeof(*local->hw_scan_req) +
req->n_channels * sizeof(req->channels[0]);
@@ -751,12 +796,15 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
local->hw_scan_req->req.duration = req->duration;
local->hw_scan_req->req.duration_mandatory =
req->duration_mandatory;
+ local->hw_scan_req->req.tsf_report_link_id =
+ req->tsf_report_link_id;
local->hw_scan_band = 0;
local->hw_scan_req->req.n_6ghz_params = req->n_6ghz_params;
local->hw_scan_req->req.scan_6ghz_params =
req->scan_6ghz_params;
local->hw_scan_req->req.scan_6ghz = req->scan_6ghz;
+ local->hw_scan_req->req.first_part = req->first_part;
/*
* After allocating local->hw_scan_req, we must
@@ -780,7 +828,7 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
if (hw_scan) {
__set_bit(SCAN_HW_SCANNING, &local->scanning);
} else if ((req->n_channels == 1) &&
- (req->channels[0] == local->_oper_chandef.chan)) {
+ (req->channels[0] == local->hw.conf.chandef.chan)) {
/*
* If we are scanning only on the operating channel
* then we do not need to stop normal activities
@@ -798,7 +846,7 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
ieee80211_configure_filter(local); /* accept probe-responses */
/* We need to ensure power level is at max for scanning. */
- ieee80211_hw_config(local, 0);
+ ieee80211_hw_conf_chan(local);
if ((req->channels[0]->flags & (IEEE80211_CHAN_NO_IR |
IEEE80211_CHAN_RADAR)) ||
@@ -812,8 +860,8 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
}
/* Now, just wait a bit and we are all done! */
- ieee80211_queue_delayed_work(&local->hw, &local->scan_work,
- next_delay);
+ wiphy_delayed_work_queue(local->hw.wiphy, &local->scan_work,
+ next_delay);
return 0;
} else {
/* Do normal software scan */
@@ -878,12 +926,13 @@ static void ieee80211_scan_state_decision(struct ieee80211_local *local,
enum mac80211_scan_state next_scan_state;
struct cfg80211_scan_request *scan_req;
+ lockdep_assert_wiphy(local->hw.wiphy);
+
/*
* check if at least one STA interface is associated,
* check if at least one STA interface has pending tx frames
* and grab the lowest used beacon interval
*/
- mutex_lock(&local->iflist_mtx);
list_for_each_entry(sdata, &local->interfaces, list) {
if (!ieee80211_sdata_running(sdata))
continue;
@@ -899,10 +948,9 @@ static void ieee80211_scan_state_decision(struct ieee80211_local *local,
}
}
}
- mutex_unlock(&local->iflist_mtx);
scan_req = rcu_dereference_protected(local->scan_req,
- lockdep_is_held(&local->mtx));
+ lockdep_is_held(&local->hw.wiphy->mtx));
next_chan = scan_req->channels[local->scan_channel_idx];
@@ -939,11 +987,10 @@ static void ieee80211_scan_state_set_channel(struct ieee80211_local *local,
{
int skip;
struct ieee80211_channel *chan;
- enum nl80211_bss_scan_width oper_scan_width;
struct cfg80211_scan_request *scan_req;
scan_req = rcu_dereference_protected(local->scan_req,
- lockdep_is_held(&local->mtx));
+ lockdep_is_held(&local->hw.wiphy->mtx));
skip = 0;
chan = scan_req->channels[local->scan_channel_idx];
@@ -953,45 +1000,24 @@ static void ieee80211_scan_state_set_channel(struct ieee80211_local *local,
local->scan_chandef.freq1_offset = chan->freq_offset;
local->scan_chandef.center_freq2 = 0;
- /* For scanning on the S1G band, ignore scan_width (which is constant
- * across all channels) for now since channel width is specific to each
- * channel. Detect the required channel width here and likely revisit
- * later. Maybe scan_width could be used to build the channel scan list?
- */
+ /* For S1G, only scan the 1MHz primaries. */
if (chan->band == NL80211_BAND_S1GHZ) {
- local->scan_chandef.width = ieee80211_s1g_channel_width(chan);
+ local->scan_chandef.width = NL80211_CHAN_WIDTH_1;
+ local->scan_chandef.s1g_primary_2mhz = false;
goto set_channel;
}
- switch (scan_req->scan_width) {
- case NL80211_BSS_CHAN_WIDTH_5:
- local->scan_chandef.width = NL80211_CHAN_WIDTH_5;
- break;
- case NL80211_BSS_CHAN_WIDTH_10:
- local->scan_chandef.width = NL80211_CHAN_WIDTH_10;
- break;
- default:
- case NL80211_BSS_CHAN_WIDTH_20:
- /* If scanning on oper channel, use whatever channel-type
- * is currently in use.
- */
- oper_scan_width = cfg80211_chandef_to_scan_width(
- &local->_oper_chandef);
- if (chan == local->_oper_chandef.chan &&
- oper_scan_width == scan_req->scan_width)
- local->scan_chandef = local->_oper_chandef;
- else
- local->scan_chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
- break;
- case NL80211_BSS_CHAN_WIDTH_1:
- case NL80211_BSS_CHAN_WIDTH_2:
- /* shouldn't get here, S1G handled above */
- WARN_ON(1);
- break;
- }
+ /*
+ * If scanning on oper channel, use whatever channel-type
+ * is currently in use.
+ */
+ if (chan == local->hw.conf.chandef.chan)
+ local->scan_chandef = local->hw.conf.chandef;
+ else
+ local->scan_chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
set_channel:
- if (ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL))
+ if (ieee80211_hw_conf_chan(local))
skip = 1;
/* advance state machine to next channel/band */
@@ -1015,7 +1041,8 @@ set_channel:
*/
if ((chan->flags & (IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_RADAR)) ||
!scan_req->n_ssids) {
- *next_delay = IEEE80211_PASSIVE_CHANNEL_TIME;
+ *next_delay = max(msecs_to_jiffies(scan_req->duration),
+ IEEE80211_PASSIVE_CHANNEL_TIME);
local->next_scan_state = SCAN_DECISION;
if (scan_req->n_ssids)
set_bit(SCAN_BEACON_WAIT, &local->scanning);
@@ -1032,7 +1059,7 @@ static void ieee80211_scan_state_suspend(struct ieee80211_local *local,
{
/* switch back to the operating channel */
local->scan_chandef.chan = NULL;
- ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
+ ieee80211_hw_conf_chan(local);
/* disable PS */
ieee80211_offchannel_return(local);
@@ -1060,7 +1087,7 @@ static void ieee80211_scan_state_resume(struct ieee80211_local *local,
local->next_scan_state = SCAN_SET_CHANNEL;
}
-void ieee80211_scan_work(struct work_struct *work)
+void ieee80211_scan_work(struct wiphy *wiphy, struct wiphy_work *work)
{
struct ieee80211_local *local =
container_of(work, struct ieee80211_local, scan_work.work);
@@ -1069,7 +1096,7 @@ void ieee80211_scan_work(struct work_struct *work)
unsigned long next_delay = 0;
bool aborted;
- mutex_lock(&local->mtx);
+ lockdep_assert_wiphy(local->hw.wiphy);
if (!ieee80211_can_run_worker(local)) {
aborted = true;
@@ -1077,9 +1104,9 @@ void ieee80211_scan_work(struct work_struct *work)
}
sdata = rcu_dereference_protected(local->scan_sdata,
- lockdep_is_held(&local->mtx));
+ lockdep_is_held(&local->hw.wiphy->mtx));
scan_req = rcu_dereference_protected(local->scan_req,
- lockdep_is_held(&local->mtx));
+ lockdep_is_held(&local->hw.wiphy->mtx));
/* When scanning on-channel, the first-callback means completed. */
if (test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning)) {
@@ -1093,7 +1120,7 @@ void ieee80211_scan_work(struct work_struct *work)
}
if (!sdata || !scan_req)
- goto out;
+ return;
if (!local->scanning) {
int rc;
@@ -1102,13 +1129,12 @@ void ieee80211_scan_work(struct work_struct *work)
RCU_INIT_POINTER(local->scan_sdata, NULL);
rc = __ieee80211_start_scan(sdata, scan_req);
- if (rc) {
- /* need to complete scan in cfg80211 */
- rcu_assign_pointer(local->scan_req, scan_req);
- aborted = true;
- goto out_complete;
- } else
- goto out;
+ if (!rc)
+ return;
+ /* need to complete scan in cfg80211 */
+ rcu_assign_pointer(local->scan_req, scan_req);
+ aborted = true;
+ goto out_complete;
}
clear_bit(SCAN_BEACON_WAIT, &local->scanning);
@@ -1154,42 +1180,36 @@ void ieee80211_scan_work(struct work_struct *work)
}
} while (next_delay == 0);
- ieee80211_queue_delayed_work(&local->hw, &local->scan_work, next_delay);
- goto out;
+ wiphy_delayed_work_queue(local->hw.wiphy, &local->scan_work,
+ next_delay);
+ return;
out_complete:
__ieee80211_scan_completed(&local->hw, aborted);
-out:
- mutex_unlock(&local->mtx);
}
int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
struct cfg80211_scan_request *req)
{
- int res;
+ lockdep_assert_wiphy(sdata->local->hw.wiphy);
- mutex_lock(&sdata->local->mtx);
- res = __ieee80211_start_scan(sdata, req);
- mutex_unlock(&sdata->local->mtx);
-
- return res;
+ return __ieee80211_start_scan(sdata, req);
}
int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
const u8 *ssid, u8 ssid_len,
struct ieee80211_channel **channels,
- unsigned int n_channels,
- enum nl80211_bss_scan_width scan_width)
+ unsigned int n_channels)
{
struct ieee80211_local *local = sdata->local;
- int ret = -EBUSY, i, n_ch = 0;
+ int i, n_ch = 0;
enum nl80211_band band;
- mutex_lock(&local->mtx);
+ lockdep_assert_wiphy(local->hw.wiphy);
/* busy scanning */
if (local->scan_req)
- goto unlock;
+ return -EBUSY;
/* fill internal scan request */
if (!channels) {
@@ -1197,7 +1217,8 @@ int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
for (band = 0; band < NUM_NL80211_BANDS; band++) {
if (!local->hw.wiphy->bands[band] ||
- band == NL80211_BAND_6GHZ)
+ band == NL80211_BAND_6GHZ ||
+ band == NL80211_BAND_S1GHZ)
continue;
max_n = local->hw.wiphy->bands[band]->n_channels;
@@ -1206,7 +1227,9 @@ int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
&local->hw.wiphy->bands[band]->channels[i];
if (tmp_ch->flags & (IEEE80211_CHAN_NO_IR |
- IEEE80211_CHAN_DISABLED))
+ IEEE80211_CHAN_DISABLED) ||
+ !cfg80211_wdev_channel_allowed(&sdata->wdev,
+ tmp_ch))
continue;
local->int_scan_req->channels[n_ch] = tmp_ch;
@@ -1215,42 +1238,40 @@ int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
}
if (WARN_ON_ONCE(n_ch == 0))
- goto unlock;
+ return -EINVAL;
local->int_scan_req->n_channels = n_ch;
} else {
for (i = 0; i < n_channels; i++) {
if (channels[i]->flags & (IEEE80211_CHAN_NO_IR |
- IEEE80211_CHAN_DISABLED))
+ IEEE80211_CHAN_DISABLED) ||
+ !cfg80211_wdev_channel_allowed(&sdata->wdev,
+ channels[i]))
continue;
local->int_scan_req->channels[n_ch] = channels[i];
n_ch++;
}
- if (WARN_ON_ONCE(n_ch == 0))
- goto unlock;
+ if (n_ch == 0)
+ return -EINVAL;
local->int_scan_req->n_channels = n_ch;
}
local->int_scan_req->ssids = &local->scan_ssid;
local->int_scan_req->n_ssids = 1;
- local->int_scan_req->scan_width = scan_width;
memcpy(local->int_scan_req->ssids[0].ssid, ssid, IEEE80211_MAX_SSID_LEN);
local->int_scan_req->ssids[0].ssid_len = ssid_len;
- ret = __ieee80211_start_scan(sdata, sdata->local->int_scan_req);
- unlock:
- mutex_unlock(&local->mtx);
- return ret;
+ return __ieee80211_start_scan(sdata, sdata->local->int_scan_req);
}
-/*
- * Only call this function when a scan can't be queued -- under RTNL.
- */
void ieee80211_scan_cancel(struct ieee80211_local *local)
{
+ /* ensure a new scan cannot be queued */
+ lockdep_assert_wiphy(local->hw.wiphy);
+
/*
* We are canceling software scan, or deferred scan that was not
* yet really started (see __ieee80211_start_scan ).
@@ -1269,9 +1290,8 @@ void ieee80211_scan_cancel(struct ieee80211_local *local)
* after the scan was completed/aborted.
*/
- mutex_lock(&local->mtx);
if (!local->scan_req)
- goto out;
+ return;
/*
* We have a scan running and the driver already reported completion,
@@ -1281,7 +1301,7 @@ void ieee80211_scan_cancel(struct ieee80211_local *local)
if (test_bit(SCAN_HW_SCANNING, &local->scanning) &&
test_bit(SCAN_COMPLETED, &local->scanning)) {
set_bit(SCAN_HW_CANCELLED, &local->scanning);
- goto out;
+ return;
}
if (test_bit(SCAN_HW_SCANNING, &local->scanning)) {
@@ -1293,21 +1313,14 @@ void ieee80211_scan_cancel(struct ieee80211_local *local)
if (local->ops->cancel_hw_scan)
drv_cancel_hw_scan(local,
rcu_dereference_protected(local->scan_sdata,
- lockdep_is_held(&local->mtx)));
- goto out;
+ lockdep_is_held(&local->hw.wiphy->mtx)));
+ return;
}
- /*
- * If the work is currently running, it must be blocked on
- * the mutex, but we'll set scan_sdata = NULL and it'll
- * simply exit once it acquires the mutex.
- */
- cancel_delayed_work(&local->scan_work);
+ wiphy_delayed_work_cancel(local->hw.wiphy, &local->scan_work);
/* and clean up */
memset(&local->scan_info, 0, sizeof(local->scan_info));
__ieee80211_scan_completed(&local->hw, true);
-out:
- mutex_unlock(&local->mtx);
}
int __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
@@ -1322,12 +1335,12 @@ int __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
u8 *ie;
u32 flags = 0;
- iebufsz = local->scan_ies_len + req->ie_len;
+ lockdep_assert_wiphy(local->hw.wiphy);
- lockdep_assert_held(&local->mtx);
+ iebufsz = local->scan_ies_len + req->ie_len;
if (!local->ops->sched_scan_start)
- return -ENOTSUPP;
+ return -EOPNOTSUPP;
for (i = 0; i < NUM_NL80211_BANDS; i++) {
if (local->hw.wiphy->bands[i]) {
@@ -1346,12 +1359,14 @@ int __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
goto out;
}
- ieee80211_prepare_scan_chandef(&chandef, req->scan_width);
+ ieee80211_prepare_scan_chandef(&chandef);
- ieee80211_build_preq_ies(sdata, ie, num_bands * iebufsz,
- &sched_scan_ies, req->ie,
- req->ie_len, bands_used, rate_masks, &chandef,
- flags);
+ ret = ieee80211_build_preq_ies(sdata, ie, num_bands * iebufsz,
+ &sched_scan_ies, req->ie,
+ req->ie_len, bands_used, rate_masks,
+ &chandef, flags);
+ if (ret < 0)
+ goto error;
ret = drv_sched_scan_start(local, sdata, req, &sched_scan_ies);
if (ret == 0) {
@@ -1359,8 +1374,8 @@ int __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
rcu_assign_pointer(local->sched_scan_req, req);
}
+error:
kfree(ie);
-
out:
if (ret) {
/* Clean in case of failure after HW restart or upon resume. */
@@ -1375,19 +1390,13 @@ int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
struct cfg80211_sched_scan_request *req)
{
struct ieee80211_local *local = sdata->local;
- int ret;
- mutex_lock(&local->mtx);
+ lockdep_assert_wiphy(local->hw.wiphy);
- if (rcu_access_pointer(local->sched_scan_sdata)) {
- mutex_unlock(&local->mtx);
+ if (rcu_access_pointer(local->sched_scan_sdata))
return -EBUSY;
- }
-
- ret = __ieee80211_request_sched_scan_start(sdata, req);
- mutex_unlock(&local->mtx);
- return ret;
+ return __ieee80211_request_sched_scan_start(sdata, req);
}
int ieee80211_request_sched_scan_stop(struct ieee80211_local *local)
@@ -1395,25 +1404,21 @@ int ieee80211_request_sched_scan_stop(struct ieee80211_local *local)
struct ieee80211_sub_if_data *sched_scan_sdata;
int ret = -ENOENT;
- mutex_lock(&local->mtx);
+ lockdep_assert_wiphy(local->hw.wiphy);
- if (!local->ops->sched_scan_stop) {
- ret = -ENOTSUPP;
- goto out;
- }
+ if (!local->ops->sched_scan_stop)
+ return -EOPNOTSUPP;
/* We don't want to restart sched scan anymore. */
RCU_INIT_POINTER(local->sched_scan_req, NULL);
sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
- lockdep_is_held(&local->mtx));
+ lockdep_is_held(&local->hw.wiphy->mtx));
if (sched_scan_sdata) {
ret = drv_sched_scan_stop(local, sched_scan_sdata);
if (!ret)
RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
}
-out:
- mutex_unlock(&local->mtx);
return ret;
}
@@ -1430,24 +1435,21 @@ EXPORT_SYMBOL(ieee80211_sched_scan_results);
void ieee80211_sched_scan_end(struct ieee80211_local *local)
{
- mutex_lock(&local->mtx);
+ lockdep_assert_wiphy(local->hw.wiphy);
- if (!rcu_access_pointer(local->sched_scan_sdata)) {
- mutex_unlock(&local->mtx);
+ if (!rcu_access_pointer(local->sched_scan_sdata))
return;
- }
RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
/* If sched scan was aborted by the driver. */
RCU_INIT_POINTER(local->sched_scan_req, NULL);
- mutex_unlock(&local->mtx);
-
- cfg80211_sched_scan_stopped(local->hw.wiphy, 0);
+ cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0);
}
-void ieee80211_sched_scan_stopped_work(struct work_struct *work)
+void ieee80211_sched_scan_stopped_work(struct wiphy *wiphy,
+ struct wiphy_work *work)
{
struct ieee80211_local *local =
container_of(work, struct ieee80211_local,
@@ -1470,6 +1472,6 @@ void ieee80211_sched_scan_stopped(struct ieee80211_hw *hw)
if (local->in_reconfig)
return;
- schedule_work(&local->sched_scan_stopped_work);
+ wiphy_work_queue(hw->wiphy, &local->sched_scan_stopped_work);
}
EXPORT_SYMBOL(ieee80211_sched_scan_stopped);