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-rw-r--r--net/mac80211/util.c2392
1 files changed, 1963 insertions, 429 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index e497476174c..a6cda52ed92 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -13,6 +13,7 @@
#include <net/mac80211.h>
#include <linux/netdevice.h>
+#include <linux/export.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/skbuff.h>
@@ -33,7 +34,7 @@
#include "wep.h"
/* privid for wiphys to determine whether they belong to us or not */
-void *mac80211_wiphy_privid = &mac80211_wiphy_privid;
+const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid;
struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
{
@@ -75,7 +76,7 @@ u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
}
if (ieee80211_is_ctl(fc)) {
- if(ieee80211_is_pspoll(fc))
+ if (ieee80211_is_pspoll(fc))
return hdr->addr1;
if (ieee80211_is_back_req(fc)) {
@@ -96,17 +97,18 @@ u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
{
- struct sk_buff *skb = tx->skb;
+ struct sk_buff *skb;
struct ieee80211_hdr *hdr;
- do {
+ skb_queue_walk(&tx->skbs, skb) {
hdr = (struct ieee80211_hdr *) skb->data;
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
- } while ((skb = skb->next));
+ }
}
-int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
- int rate, int erp, int short_preamble)
+int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
+ int rate, int erp, int short_preamble,
+ int shift)
{
int dur;
@@ -117,9 +119,12 @@ int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
*
* rate is in 100 kbps, so divident is multiplied by 10 in the
* DIV_ROUND_UP() operations.
+ *
+ * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and
+ * is assumed to be 0 otherwise.
*/
- if (local->hw.conf.channel->band == IEEE80211_BAND_5GHZ || erp) {
+ if (band == IEEE80211_BAND_5GHZ || erp) {
/*
* OFDM:
*
@@ -129,13 +134,23 @@ int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
* TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
*
* T_SYM = 4 usec
- * 802.11a - 17.5.2: aSIFSTime = 16 usec
+ * 802.11a - 18.5.2: aSIFSTime = 16 usec
* 802.11g - 19.8.4: aSIFSTime = 10 usec +
* signal ext = 6 usec
*/
dur = 16; /* SIFS + signal ext */
- dur += 16; /* 17.3.2.3: T_PREAMBLE = 16 usec */
- dur += 4; /* 17.3.2.3: T_SIGNAL = 4 usec */
+ dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
+ dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
+
+ /* IEEE 802.11-2012 18.3.2.4: all values above are:
+ * * times 4 for 5 MHz
+ * * times 2 for 10 MHz
+ */
+ dur *= 1 << shift;
+
+ /* rates should already consider the channel bandwidth,
+ * don't apply divisor again.
+ */
dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
4 * rate); /* T_SYM x N_SYM */
} else {
@@ -161,13 +176,13 @@ int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
/* Exported duration function for driver use */
__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
+ enum ieee80211_band band,
size_t frame_len,
struct ieee80211_rate *rate)
{
- struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata;
u16 dur;
- int erp;
+ int erp, shift = 0;
bool short_preamble = false;
erp = 0;
@@ -176,10 +191,11 @@ __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
short_preamble = sdata->vif.bss_conf.use_short_preamble;
if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
erp = rate->flags & IEEE80211_RATE_ERP_G;
+ shift = ieee80211_vif_get_shift(vif);
}
- dur = ieee80211_frame_duration(local, frame_len, rate->bitrate, erp,
- short_preamble);
+ dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
+ short_preamble, shift);
return cpu_to_le16(dur);
}
@@ -193,11 +209,11 @@ __le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
struct ieee80211_rate *rate;
struct ieee80211_sub_if_data *sdata;
bool short_preamble;
- int erp;
+ int erp, shift = 0, bitrate;
u16 dur;
struct ieee80211_supported_band *sband;
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+ sband = local->hw.wiphy->bands[frame_txctl->band];
short_preamble = false;
@@ -209,17 +225,20 @@ __le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
short_preamble = sdata->vif.bss_conf.use_short_preamble;
if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
erp = rate->flags & IEEE80211_RATE_ERP_G;
+ shift = ieee80211_vif_get_shift(vif);
}
+ bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
+
/* CTS duration */
- dur = ieee80211_frame_duration(local, 10, rate->bitrate,
- erp, short_preamble);
+ dur = ieee80211_frame_duration(sband->band, 10, bitrate,
+ erp, short_preamble, shift);
/* Data frame duration */
- dur += ieee80211_frame_duration(local, frame_len, rate->bitrate,
- erp, short_preamble);
+ dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
+ erp, short_preamble, shift);
/* ACK duration */
- dur += ieee80211_frame_duration(local, 10, rate->bitrate,
- erp, short_preamble);
+ dur += ieee80211_frame_duration(sband->band, 10, bitrate,
+ erp, short_preamble, shift);
return cpu_to_le16(dur);
}
@@ -234,11 +253,11 @@ __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
struct ieee80211_rate *rate;
struct ieee80211_sub_if_data *sdata;
bool short_preamble;
- int erp;
+ int erp, shift = 0, bitrate;
u16 dur;
struct ieee80211_supported_band *sband;
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+ sband = local->hw.wiphy->bands[frame_txctl->band];
short_preamble = false;
@@ -249,32 +268,67 @@ __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
short_preamble = sdata->vif.bss_conf.use_short_preamble;
if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
erp = rate->flags & IEEE80211_RATE_ERP_G;
+ shift = ieee80211_vif_get_shift(vif);
}
+ bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
+
/* Data frame duration */
- dur = ieee80211_frame_duration(local, frame_len, rate->bitrate,
- erp, short_preamble);
+ dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
+ erp, short_preamble, shift);
if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
/* ACK duration */
- dur += ieee80211_frame_duration(local, 10, rate->bitrate,
- erp, short_preamble);
+ dur += ieee80211_frame_duration(sband->band, 10, bitrate,
+ erp, short_preamble, shift);
}
return cpu_to_le16(dur);
}
EXPORT_SYMBOL(ieee80211_ctstoself_duration);
+void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
+{
+ struct ieee80211_sub_if_data *sdata;
+ int n_acs = IEEE80211_NUM_ACS;
+
+ if (local->hw.queues < IEEE80211_NUM_ACS)
+ n_acs = 1;
+
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+ int ac;
+
+ if (!sdata->dev)
+ continue;
+
+ if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
+ local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
+ continue;
+
+ for (ac = 0; ac < n_acs; ac++) {
+ int ac_queue = sdata->vif.hw_queue[ac];
+
+ if (ac_queue == queue ||
+ (sdata->vif.cab_queue == queue &&
+ local->queue_stop_reasons[ac_queue] == 0 &&
+ skb_queue_empty(&local->pending[ac_queue])))
+ netif_wake_subqueue(sdata->dev, ac);
+ }
+ }
+}
+
static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
enum queue_stop_reason reason)
{
struct ieee80211_local *local = hw_to_local(hw);
- struct ieee80211_sub_if_data *sdata;
trace_wake_queue(local, queue, reason);
if (WARN_ON(queue >= hw->queues))
return;
+ if (!test_bit(reason, &local->queue_stop_reasons[queue]))
+ return;
+
__clear_bit(reason, &local->queue_stop_reasons[queue]);
if (local->queue_stop_reasons[queue] != 0)
@@ -283,11 +337,7 @@ static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
if (skb_queue_empty(&local->pending[queue])) {
rcu_read_lock();
- list_for_each_entry_rcu(sdata, &local->interfaces, list) {
- if (test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state))
- continue;
- netif_wake_subqueue(sdata->dev, queue);
- }
+ ieee80211_propagate_queue_wake(local, queue);
rcu_read_unlock();
} else
tasklet_schedule(&local->tx_pending_tasklet);
@@ -316,17 +366,34 @@ static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata;
+ int n_acs = IEEE80211_NUM_ACS;
trace_stop_queue(local, queue, reason);
if (WARN_ON(queue >= hw->queues))
return;
+ if (test_bit(reason, &local->queue_stop_reasons[queue]))
+ return;
+
__set_bit(reason, &local->queue_stop_reasons[queue]);
+ if (local->hw.queues < IEEE80211_NUM_ACS)
+ n_acs = 1;
+
rcu_read_lock();
- list_for_each_entry_rcu(sdata, &local->interfaces, list)
- netif_stop_subqueue(sdata->dev, queue);
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+ int ac;
+
+ if (!sdata->dev)
+ continue;
+
+ for (ac = 0; ac < n_acs; ac++) {
+ if (sdata->vif.hw_queue[ac] == queue ||
+ sdata->vif.cab_queue == queue)
+ netif_stop_subqueue(sdata->dev, ac);
+ }
+ }
rcu_read_unlock();
}
@@ -353,11 +420,11 @@ void ieee80211_add_pending_skb(struct ieee80211_local *local,
{
struct ieee80211_hw *hw = &local->hw;
unsigned long flags;
- int queue = skb_get_queue_mapping(skb);
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ int queue = info->hw_queue;
if (WARN_ON(!info->control.vif)) {
- kfree_skb(skb);
+ ieee80211_free_txskb(&local->hw, skb);
return;
}
@@ -368,52 +435,40 @@ void ieee80211_add_pending_skb(struct ieee80211_local *local,
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
}
-int ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
- struct sk_buff_head *skbs,
- void (*fn)(void *data), void *data)
+void ieee80211_add_pending_skbs(struct ieee80211_local *local,
+ struct sk_buff_head *skbs)
{
struct ieee80211_hw *hw = &local->hw;
struct sk_buff *skb;
unsigned long flags;
- int queue, ret = 0, i;
+ int queue, i;
spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
- for (i = 0; i < hw->queues; i++)
- __ieee80211_stop_queue(hw, i,
- IEEE80211_QUEUE_STOP_REASON_SKB_ADD);
-
while ((skb = skb_dequeue(skbs))) {
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
if (WARN_ON(!info->control.vif)) {
- kfree_skb(skb);
+ ieee80211_free_txskb(&local->hw, skb);
continue;
}
- ret++;
- queue = skb_get_queue_mapping(skb);
+ queue = info->hw_queue;
+
+ __ieee80211_stop_queue(hw, queue,
+ IEEE80211_QUEUE_STOP_REASON_SKB_ADD);
+
__skb_queue_tail(&local->pending[queue], skb);
}
- if (fn)
- fn(data);
-
for (i = 0; i < hw->queues; i++)
__ieee80211_wake_queue(hw, i,
IEEE80211_QUEUE_STOP_REASON_SKB_ADD);
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
-
- return ret;
-}
-
-int ieee80211_add_pending_skbs(struct ieee80211_local *local,
- struct sk_buff_head *skbs)
-{
- return ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
}
void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
- enum queue_stop_reason reason)
+ unsigned long queues,
+ enum queue_stop_reason reason)
{
struct ieee80211_local *local = hw_to_local(hw);
unsigned long flags;
@@ -421,7 +476,7 @@ void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
- for (i = 0; i < hw->queues; i++)
+ for_each_set_bit(i, &queues, hw->queues)
__ieee80211_stop_queue(hw, i, reason);
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
@@ -429,7 +484,7 @@ void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
void ieee80211_stop_queues(struct ieee80211_hw *hw)
{
- ieee80211_stop_queues_by_reason(hw,
+ ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
IEEE80211_QUEUE_STOP_REASON_DRIVER);
}
EXPORT_SYMBOL(ieee80211_stop_queues);
@@ -444,13 +499,15 @@ int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
return true;
spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
- ret = !!local->queue_stop_reasons[queue];
+ ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
+ &local->queue_stop_reasons[queue]);
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
return ret;
}
EXPORT_SYMBOL(ieee80211_queue_stopped);
void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
+ unsigned long queues,
enum queue_stop_reason reason)
{
struct ieee80211_local *local = hw_to_local(hw);
@@ -459,7 +516,7 @@ void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
- for (i = 0; i < hw->queues; i++)
+ for_each_set_bit(i, &queues, hw->queues)
__ieee80211_wake_queue(hw, i, reason);
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
@@ -467,66 +524,131 @@ void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
void ieee80211_wake_queues(struct ieee80211_hw *hw)
{
- ieee80211_wake_queues_by_reason(hw, IEEE80211_QUEUE_STOP_REASON_DRIVER);
+ ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
+ IEEE80211_QUEUE_STOP_REASON_DRIVER);
}
EXPORT_SYMBOL(ieee80211_wake_queues);
-void ieee80211_iterate_active_interfaces(
- struct ieee80211_hw *hw,
- void (*iterator)(void *data, u8 *mac,
- struct ieee80211_vif *vif),
- void *data)
+void ieee80211_flush_queues(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata)
{
- struct ieee80211_local *local = hw_to_local(hw);
- struct ieee80211_sub_if_data *sdata;
+ u32 queues;
- mutex_lock(&local->iflist_mtx);
+ if (!local->ops->flush)
+ return;
- list_for_each_entry(sdata, &local->interfaces, list) {
+ if (sdata && local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) {
+ int ac;
+
+ queues = 0;
+
+ for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
+ queues |= BIT(sdata->vif.hw_queue[ac]);
+ if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
+ queues |= BIT(sdata->vif.cab_queue);
+ } else {
+ /* all queues */
+ queues = BIT(local->hw.queues) - 1;
+ }
+
+ ieee80211_stop_queues_by_reason(&local->hw, IEEE80211_MAX_QUEUE_MAP,
+ IEEE80211_QUEUE_STOP_REASON_FLUSH);
+
+ drv_flush(local, sdata, queues, false);
+
+ ieee80211_wake_queues_by_reason(&local->hw, IEEE80211_MAX_QUEUE_MAP,
+ IEEE80211_QUEUE_STOP_REASON_FLUSH);
+}
+
+static void __iterate_active_interfaces(struct ieee80211_local *local,
+ u32 iter_flags,
+ void (*iterator)(void *data, u8 *mac,
+ struct ieee80211_vif *vif),
+ void *data)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
switch (sdata->vif.type) {
case NL80211_IFTYPE_MONITOR:
+ if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE))
+ continue;
+ break;
case NL80211_IFTYPE_AP_VLAN:
continue;
default:
break;
}
+ if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
+ !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
+ continue;
if (ieee80211_sdata_running(sdata))
iterator(data, sdata->vif.addr,
&sdata->vif);
}
+ sdata = rcu_dereference_check(local->monitor_sdata,
+ lockdep_is_held(&local->iflist_mtx) ||
+ lockdep_rtnl_is_held());
+ if (sdata &&
+ (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL ||
+ sdata->flags & IEEE80211_SDATA_IN_DRIVER))
+ iterator(data, sdata->vif.addr, &sdata->vif);
+}
+
+void ieee80211_iterate_active_interfaces(
+ struct ieee80211_hw *hw, u32 iter_flags,
+ void (*iterator)(void *data, u8 *mac,
+ struct ieee80211_vif *vif),
+ void *data)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+
+ mutex_lock(&local->iflist_mtx);
+ __iterate_active_interfaces(local, iter_flags, iterator, data);
mutex_unlock(&local->iflist_mtx);
}
EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces);
void ieee80211_iterate_active_interfaces_atomic(
- struct ieee80211_hw *hw,
+ struct ieee80211_hw *hw, u32 iter_flags,
void (*iterator)(void *data, u8 *mac,
struct ieee80211_vif *vif),
void *data)
{
struct ieee80211_local *local = hw_to_local(hw);
- struct ieee80211_sub_if_data *sdata;
rcu_read_lock();
-
- list_for_each_entry_rcu(sdata, &local->interfaces, list) {
- switch (sdata->vif.type) {
- case NL80211_IFTYPE_MONITOR:
- case NL80211_IFTYPE_AP_VLAN:
- continue;
- default:
- break;
- }
- if (ieee80211_sdata_running(sdata))
- iterator(data, sdata->vif.addr,
- &sdata->vif);
- }
-
+ __iterate_active_interfaces(local, iter_flags, iterator, data);
rcu_read_unlock();
}
EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
+void ieee80211_iterate_active_interfaces_rtnl(
+ struct ieee80211_hw *hw, u32 iter_flags,
+ void (*iterator)(void *data, u8 *mac,
+ struct ieee80211_vif *vif),
+ void *data)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+
+ ASSERT_RTNL();
+
+ __iterate_active_interfaces(local, iter_flags, iterator, data);
+}
+EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl);
+
+struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
+
+ if (!ieee80211_sdata_running(sdata) ||
+ !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
+ return NULL;
+ return &sdata->vif;
+}
+EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
+
/*
* Nothing should have been stuffed into the workqueue during
* the suspend->resume cycle. If this WARN is seen then there
@@ -567,37 +689,83 @@ void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
}
EXPORT_SYMBOL(ieee80211_queue_delayed_work);
-void ieee802_11_parse_elems(u8 *start, size_t len,
- struct ieee802_11_elems *elems)
-{
- ieee802_11_parse_elems_crc(start, len, elems, 0, 0);
-}
-
-u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
+u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
struct ieee802_11_elems *elems,
u64 filter, u32 crc)
{
size_t left = len;
- u8 *pos = start;
+ const u8 *pos = start;
bool calc_crc = filter != 0;
+ DECLARE_BITMAP(seen_elems, 256);
+ const u8 *ie;
+ bitmap_zero(seen_elems, 256);
memset(elems, 0, sizeof(*elems));
elems->ie_start = start;
elems->total_len = len;
while (left >= 2) {
u8 id, elen;
+ bool elem_parse_failed;
id = *pos++;
elen = *pos++;
left -= 2;
- if (elen > left)
+ if (elen > left) {
+ elems->parse_error = true;
break;
+ }
+
+ switch (id) {
+ case WLAN_EID_SSID:
+ case WLAN_EID_SUPP_RATES:
+ case WLAN_EID_FH_PARAMS:
+ case WLAN_EID_DS_PARAMS:
+ case WLAN_EID_CF_PARAMS:
+ case WLAN_EID_TIM:
+ case WLAN_EID_IBSS_PARAMS:
+ case WLAN_EID_CHALLENGE:
+ case WLAN_EID_RSN:
+ case WLAN_EID_ERP_INFO:
+ case WLAN_EID_EXT_SUPP_RATES:
+ case WLAN_EID_HT_CAPABILITY:
+ case WLAN_EID_HT_OPERATION:
+ case WLAN_EID_VHT_CAPABILITY:
+ case WLAN_EID_VHT_OPERATION:
+ case WLAN_EID_MESH_ID:
+ case WLAN_EID_MESH_CONFIG:
+ case WLAN_EID_PEER_MGMT:
+ case WLAN_EID_PREQ:
+ case WLAN_EID_PREP:
+ case WLAN_EID_PERR:
+ case WLAN_EID_RANN:
+ case WLAN_EID_CHANNEL_SWITCH:
+ case WLAN_EID_EXT_CHANSWITCH_ANN:
+ case WLAN_EID_COUNTRY:
+ case WLAN_EID_PWR_CONSTRAINT:
+ case WLAN_EID_TIMEOUT_INTERVAL:
+ case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
+ case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
+ case WLAN_EID_CHAN_SWITCH_PARAM:
+ /*
+ * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
+ * that if the content gets bigger it might be needed more than once
+ */
+ if (test_bit(id, seen_elems)) {
+ elems->parse_error = true;
+ left -= elen;
+ pos += elen;
+ continue;
+ }
+ break;
+ }
if (calc_crc && id < 64 && (filter & (1ULL << id)))
crc = crc32_be(crc, pos - 2, elen + 2);
+ elem_parse_failed = false;
+
switch (id) {
case WLAN_EID_SSID:
elems->ssid = pos;
@@ -607,27 +775,18 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
elems->supp_rates = pos;
elems->supp_rates_len = elen;
break;
- case WLAN_EID_FH_PARAMS:
- elems->fh_params = pos;
- elems->fh_params_len = elen;
- break;
case WLAN_EID_DS_PARAMS:
- elems->ds_params = pos;
- elems->ds_params_len = elen;
- break;
- case WLAN_EID_CF_PARAMS:
- elems->cf_params = pos;
- elems->cf_params_len = elen;
+ if (elen >= 1)
+ elems->ds_params = pos;
+ else
+ elem_parse_failed = true;
break;
case WLAN_EID_TIM:
if (elen >= sizeof(struct ieee80211_tim_ie)) {
elems->tim = (void *)pos;
elems->tim_len = elen;
- }
- break;
- case WLAN_EID_IBSS_PARAMS:
- elems->ibss_params = pos;
- elems->ibss_params_len = elen;
+ } else
+ elem_parse_failed = true;
break;
case WLAN_EID_CHALLENGE:
elems->challenge = pos;
@@ -641,11 +800,7 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
if (calc_crc)
crc = crc32_be(crc, pos - 2, elen + 2);
- if (pos[3] == 1) {
- /* OUI Type 1 - WPA IE */
- elems->wpa = pos;
- elems->wpa_len = elen;
- } else if (elen >= 5 && pos[3] == 2) {
+ if (elen >= 5 && pos[3] == 2) {
/* OUI Type 2 - WMM IE */
if (pos[4] == 0) {
elems->wmm_info = pos;
@@ -662,8 +817,10 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
elems->rsn_len = elen;
break;
case WLAN_EID_ERP_INFO:
- elems->erp_info = pos;
- elems->erp_info_len = elen;
+ if (elen >= 1)
+ elems->erp_info = pos;
+ else
+ elem_parse_failed = true;
break;
case WLAN_EID_EXT_SUPP_RATES:
elems->ext_supp_rates = pos;
@@ -672,10 +829,32 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
case WLAN_EID_HT_CAPABILITY:
if (elen >= sizeof(struct ieee80211_ht_cap))
elems->ht_cap_elem = (void *)pos;
+ else
+ elem_parse_failed = true;
+ break;
+ case WLAN_EID_HT_OPERATION:
+ if (elen >= sizeof(struct ieee80211_ht_operation))
+ elems->ht_operation = (void *)pos;
+ else
+ elem_parse_failed = true;
+ break;
+ case WLAN_EID_VHT_CAPABILITY:
+ if (elen >= sizeof(struct ieee80211_vht_cap))
+ elems->vht_cap_elem = (void *)pos;
+ else
+ elem_parse_failed = true;
break;
- case WLAN_EID_HT_INFORMATION:
- if (elen >= sizeof(struct ieee80211_ht_info))
- elems->ht_info_elem = (void *)pos;
+ case WLAN_EID_VHT_OPERATION:
+ if (elen >= sizeof(struct ieee80211_vht_operation))
+ elems->vht_operation = (void *)pos;
+ else
+ elem_parse_failed = true;
+ break;
+ case WLAN_EID_OPMODE_NOTIF:
+ if (elen > 0)
+ elems->opmode_notif = pos;
+ else
+ elem_parse_failed = true;
break;
case WLAN_EID_MESH_ID:
elems->mesh_id = pos;
@@ -684,10 +863,16 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
case WLAN_EID_MESH_CONFIG:
if (elen >= sizeof(struct ieee80211_meshconf_ie))
elems->mesh_config = (void *)pos;
+ else
+ elem_parse_failed = true;
+ break;
+ case WLAN_EID_PEER_MGMT:
+ elems->peering = pos;
+ elems->peering_len = elen;
break;
- case WLAN_EID_PEER_LINK:
- elems->peer_link = pos;
- elems->peer_link_len = elen;
+ case WLAN_EID_MESH_AWAKE_WINDOW:
+ if (elen >= 2)
+ elems->awake_window = (void *)pos;
break;
case WLAN_EID_PREQ:
elems->preq = pos;
@@ -704,192 +889,230 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
case WLAN_EID_RANN:
if (elen >= sizeof(struct ieee80211_rann_ie))
elems->rann = (void *)pos;
+ else
+ elem_parse_failed = true;
break;
case WLAN_EID_CHANNEL_SWITCH:
- elems->ch_switch_elem = pos;
- elems->ch_switch_elem_len = elen;
+ if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
+ elem_parse_failed = true;
+ break;
+ }
+ elems->ch_switch_ie = (void *)pos;
+ break;
+ case WLAN_EID_EXT_CHANSWITCH_ANN:
+ if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
+ elem_parse_failed = true;
+ break;
+ }
+ elems->ext_chansw_ie = (void *)pos;
+ break;
+ case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
+ if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
+ elem_parse_failed = true;
+ break;
+ }
+ elems->sec_chan_offs = (void *)pos;
+ break;
+ case WLAN_EID_CHAN_SWITCH_PARAM:
+ if (elen !=
+ sizeof(*elems->mesh_chansw_params_ie)) {
+ elem_parse_failed = true;
+ break;
+ }
+ elems->mesh_chansw_params_ie = (void *)pos;
break;
- case WLAN_EID_QUIET:
- if (!elems->quiet_elem) {
- elems->quiet_elem = pos;
- elems->quiet_elem_len = elen;
+ case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
+ if (!action ||
+ elen != sizeof(*elems->wide_bw_chansw_ie)) {
+ elem_parse_failed = true;
+ break;
+ }
+ elems->wide_bw_chansw_ie = (void *)pos;
+ break;
+ case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
+ if (action) {
+ elem_parse_failed = true;
+ break;
+ }
+ /*
+ * This is a bit tricky, but as we only care about
+ * the wide bandwidth channel switch element, so
+ * just parse it out manually.
+ */
+ ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
+ pos, elen);
+ if (ie) {
+ if (ie[1] == sizeof(*elems->wide_bw_chansw_ie))
+ elems->wide_bw_chansw_ie =
+ (void *)(ie + 2);
+ else
+ elem_parse_failed = true;
}
- elems->num_of_quiet_elem++;
break;
case WLAN_EID_COUNTRY:
elems->country_elem = pos;
elems->country_elem_len = elen;
break;
case WLAN_EID_PWR_CONSTRAINT:
+ if (elen != 1) {
+ elem_parse_failed = true;
+ break;
+ }
elems->pwr_constr_elem = pos;
- elems->pwr_constr_elem_len = elen;
break;
case WLAN_EID_TIMEOUT_INTERVAL:
- elems->timeout_int = pos;
- elems->timeout_int_len = elen;
+ if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
+ elems->timeout_int = (void *)pos;
+ else
+ elem_parse_failed = true;
break;
default:
break;
}
+ if (elem_parse_failed)
+ elems->parse_error = true;
+ else
+ __set_bit(id, seen_elems);
+
left -= elen;
pos += elen;
}
+ if (left != 0)
+ elems->parse_error = true;
+
return crc;
}
-void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata)
+void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
+ bool bss_notify)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_tx_queue_params qparam;
- int queue;
- bool use_11b;
+ struct ieee80211_chanctx_conf *chanctx_conf;
+ int ac;
+ bool use_11b, enable_qos;
int aCWmin, aCWmax;
if (!local->ops->conf_tx)
return;
+ if (local->hw.queues < IEEE80211_NUM_ACS)
+ return;
+
memset(&qparam, 0, sizeof(qparam));
- use_11b = (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) &&
+ rcu_read_lock();
+ chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+ use_11b = (chanctx_conf &&
+ chanctx_conf->def.chan->band == IEEE80211_BAND_2GHZ) &&
!(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
+ rcu_read_unlock();
- for (queue = 0; queue < local_to_hw(local)->queues; queue++) {
- /* Set defaults according to 802.11-2007 Table 7-37 */
- aCWmax = 1023;
- if (use_11b)
- aCWmin = 31;
- else
- aCWmin = 15;
-
- switch (queue) {
- case 3: /* AC_BK */
- qparam.cw_max = aCWmax;
- qparam.cw_min = aCWmin;
- qparam.txop = 0;
- qparam.aifs = 7;
- break;
- default: /* never happens but let's not leave undefined */
- case 2: /* AC_BE */
- qparam.cw_max = aCWmax;
- qparam.cw_min = aCWmin;
- qparam.txop = 0;
- qparam.aifs = 3;
- break;
- case 1: /* AC_VI */
- qparam.cw_max = aCWmin;
- qparam.cw_min = (aCWmin + 1) / 2 - 1;
- if (use_11b)
- qparam.txop = 6016/32;
- else
- qparam.txop = 3008/32;
- qparam.aifs = 2;
- break;
- case 0: /* AC_VO */
- qparam.cw_max = (aCWmin + 1) / 2 - 1;
- qparam.cw_min = (aCWmin + 1) / 4 - 1;
- if (use_11b)
- qparam.txop = 3264/32;
- else
- qparam.txop = 1504/32;
- qparam.aifs = 2;
- break;
+ /*
+ * By default disable QoS in STA mode for old access points, which do
+ * not support 802.11e. New APs will provide proper queue parameters,
+ * that we will configure later.
+ */
+ enable_qos = (sdata->vif.type != NL80211_IFTYPE_STATION);
+
+ /* Set defaults according to 802.11-2007 Table 7-37 */
+ aCWmax = 1023;
+ if (use_11b)
+ aCWmin = 31;
+ else
+ aCWmin = 15;
+
+ /* Confiure old 802.11b/g medium access rules. */
+ qparam.cw_max = aCWmax;
+ qparam.cw_min = aCWmin;
+ qparam.txop = 0;
+ qparam.aifs = 2;
+
+ for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
+ /* Update if QoS is enabled. */
+ if (enable_qos) {
+ switch (ac) {
+ case IEEE80211_AC_BK:
+ qparam.cw_max = aCWmax;
+ qparam.cw_min = aCWmin;
+ qparam.txop = 0;
+ qparam.aifs = 7;
+ break;
+ /* never happens but let's not leave undefined */
+ default:
+ case IEEE80211_AC_BE:
+ qparam.cw_max = aCWmax;
+ qparam.cw_min = aCWmin;
+ qparam.txop = 0;
+ qparam.aifs = 3;
+ break;
+ case IEEE80211_AC_VI:
+ qparam.cw_max = aCWmin;
+ qparam.cw_min = (aCWmin + 1) / 2 - 1;
+ if (use_11b)
+ qparam.txop = 6016/32;
+ else
+ qparam.txop = 3008/32;
+ qparam.aifs = 2;
+ break;
+ case IEEE80211_AC_VO:
+ qparam.cw_max = (aCWmin + 1) / 2 - 1;
+ qparam.cw_min = (aCWmin + 1) / 4 - 1;
+ if (use_11b)
+ qparam.txop = 3264/32;
+ else
+ qparam.txop = 1504/32;
+ qparam.aifs = 2;
+ break;
+ }
}
qparam.uapsd = false;
- drv_conf_tx(local, queue, &qparam);
+ sdata->tx_conf[ac] = qparam;
+ drv_conf_tx(local, sdata, ac, &qparam);
}
- /* after reinitialize QoS TX queues setting to default,
- * disable QoS at all */
-
- if (sdata->vif.type != NL80211_IFTYPE_MONITOR) {
- sdata->vif.bss_conf.qos =
- sdata->vif.type != NL80211_IFTYPE_STATION;
- ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
+ if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
+ sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) {
+ sdata->vif.bss_conf.qos = enable_qos;
+ if (bss_notify)
+ ieee80211_bss_info_change_notify(sdata,
+ BSS_CHANGED_QOS);
}
}
-void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
- const size_t supp_rates_len,
- const u8 *supp_rates)
-{
- struct ieee80211_local *local = sdata->local;
- int i, have_higher_than_11mbit = 0;
-
- /* cf. IEEE 802.11 9.2.12 */
- for (i = 0; i < supp_rates_len; i++)
- if ((supp_rates[i] & 0x7f) * 5 > 110)
- have_higher_than_11mbit = 1;
-
- if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
- have_higher_than_11mbit)
- sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
- else
- sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
-
- ieee80211_set_wmm_default(sdata);
-}
-
-u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
- enum ieee80211_band band)
-{
- struct ieee80211_supported_band *sband;
- struct ieee80211_rate *bitrates;
- u32 mandatory_rates;
- enum ieee80211_rate_flags mandatory_flag;
- int i;
-
- sband = local->hw.wiphy->bands[band];
- if (!sband) {
- WARN_ON(1);
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
- }
-
- if (band == IEEE80211_BAND_2GHZ)
- mandatory_flag = IEEE80211_RATE_MANDATORY_B;
- else
- mandatory_flag = IEEE80211_RATE_MANDATORY_A;
-
- bitrates = sband->bitrates;
- mandatory_rates = 0;
- for (i = 0; i < sband->n_bitrates; i++)
- if (bitrates[i].flags & mandatory_flag)
- mandatory_rates |= BIT(i);
- return mandatory_rates;
-}
-
void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
- u16 transaction, u16 auth_alg,
- u8 *extra, size_t extra_len, const u8 *bssid,
- const u8 *key, u8 key_len, u8 key_idx)
+ u16 transaction, u16 auth_alg, u16 status,
+ const u8 *extra, size_t extra_len, const u8 *da,
+ const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
+ u32 tx_flags)
{
struct ieee80211_local *local = sdata->local;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
int err;
- skb = dev_alloc_skb(local->hw.extra_tx_headroom +
- sizeof(*mgmt) + 6 + extra_len);
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for auth "
- "frame\n", sdata->name);
+ /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
+ 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
+ if (!skb)
return;
- }
- skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
memset(mgmt, 0, 24 + 6);
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_AUTH);
- memcpy(mgmt->da, bssid, ETH_ALEN);
+ memcpy(mgmt->da, da, ETH_ALEN);
memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
memcpy(mgmt->bssid, bssid, ETH_ALEN);
mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
- mgmt->u.auth.status_code = cpu_to_le16(0);
+ mgmt->u.auth.status_code = cpu_to_le16(status);
if (extra)
memcpy(skb_put(skb, extra_len), extra, extra_len);
@@ -899,36 +1122,88 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
WARN_ON(err);
}
- IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
+ IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
+ tx_flags;
ieee80211_tx_skb(sdata, skb);
}
+void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
+ const u8 *bssid, u16 stype, u16 reason,
+ bool send_frame, u8 *frame_buf)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt = (void *)frame_buf;
+
+ /* build frame */
+ mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
+ mgmt->duration = 0; /* initialize only */
+ mgmt->seq_ctrl = 0; /* initialize only */
+ memcpy(mgmt->da, bssid, ETH_ALEN);
+ memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
+ memcpy(mgmt->bssid, bssid, ETH_ALEN);
+ /* u.deauth.reason_code == u.disassoc.reason_code */
+ mgmt->u.deauth.reason_code = cpu_to_le16(reason);
+
+ if (send_frame) {
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom +
+ IEEE80211_DEAUTH_FRAME_LEN);
+ if (!skb)
+ return;
+
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ /* copy in frame */
+ memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN),
+ mgmt, IEEE80211_DEAUTH_FRAME_LEN);
+
+ if (sdata->vif.type != NL80211_IFTYPE_STATION ||
+ !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
+ IEEE80211_SKB_CB(skb)->flags |=
+ IEEE80211_TX_INTFL_DONT_ENCRYPT;
+
+ ieee80211_tx_skb(sdata, skb);
+ }
+}
+
int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
- const u8 *ie, size_t ie_len,
+ size_t buffer_len, const u8 *ie, size_t ie_len,
enum ieee80211_band band, u32 rate_mask,
- u8 channel)
+ struct cfg80211_chan_def *chandef)
{
struct ieee80211_supported_band *sband;
- u8 *pos;
+ u8 *pos = buffer, *end = buffer + buffer_len;
size_t offset = 0, noffset;
int supp_rates_len, i;
u8 rates[32];
int num_rates;
int ext_rates_len;
+ int shift;
+ u32 rate_flags;
sband = local->hw.wiphy->bands[band];
+ if (WARN_ON_ONCE(!sband))
+ return 0;
- pos = buffer;
+ rate_flags = ieee80211_chandef_rate_flags(chandef);
+ shift = ieee80211_chandef_get_shift(chandef);
num_rates = 0;
for (i = 0; i < sband->n_bitrates; i++) {
if ((BIT(i) & rate_mask) == 0)
continue; /* skip rate */
- rates[num_rates++] = (u8) (sband->bitrates[i].bitrate / 5);
+ if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
+ continue;
+
+ rates[num_rates++] =
+ (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
+ (1 << shift) * 5);
}
supp_rates_len = min_t(int, num_rates, 8);
+ if (end - pos < 2 + supp_rates_len)
+ goto out_err;
*pos++ = WLAN_EID_SUPP_RATES;
*pos++ = supp_rates_len;
memcpy(pos, rates, supp_rates_len);
@@ -945,6 +1220,8 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
before_extrates,
ARRAY_SIZE(before_extrates),
offset);
+ if (end - pos < noffset - offset)
+ goto out_err;
memcpy(pos, ie + offset, noffset - offset);
pos += noffset - offset;
offset = noffset;
@@ -952,16 +1229,21 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
ext_rates_len = num_rates - supp_rates_len;
if (ext_rates_len > 0) {
+ if (end - pos < 2 + ext_rates_len)
+ goto out_err;
*pos++ = WLAN_EID_EXT_SUPP_RATES;
*pos++ = ext_rates_len;
memcpy(pos, rates + supp_rates_len, ext_rates_len);
pos += ext_rates_len;
}
- if (channel && sband->band == IEEE80211_BAND_2GHZ) {
+ if (chandef->chan && sband->band == IEEE80211_BAND_2GHZ) {
+ if (end - pos < 3)
+ goto out_err;
*pos++ = WLAN_EID_DS_PARAMS;
*pos++ = 1;
- *pos++ = channel;
+ *pos++ = ieee80211_frequency_to_channel(
+ chandef->chan->center_freq);
}
/* insert custom IEs that go before HT */
@@ -977,33 +1259,18 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
noffset = ieee80211_ie_split(ie, ie_len,
before_ht, ARRAY_SIZE(before_ht),
offset);
+ if (end - pos < noffset - offset)
+ goto out_err;
memcpy(pos, ie + offset, noffset - offset);
pos += noffset - offset;
offset = noffset;
}
if (sband->ht_cap.ht_supported) {
- u16 cap = sband->ht_cap.cap;
- __le16 tmp;
-
- if (ieee80211_disable_40mhz_24ghz &&
- sband->band == IEEE80211_BAND_2GHZ) {
- cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
- cap &= ~IEEE80211_HT_CAP_SGI_40;
- }
-
- *pos++ = WLAN_EID_HT_CAPABILITY;
- *pos++ = sizeof(struct ieee80211_ht_cap);
- memset(pos, 0, sizeof(struct ieee80211_ht_cap));
- tmp = cpu_to_le16(cap);
- memcpy(pos, &tmp, sizeof(u16));
- pos += sizeof(u16);
- *pos++ = sband->ht_cap.ampdu_factor |
- (sband->ht_cap.ampdu_density <<
- IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
- memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs));
- pos += sizeof(sband->ht_cap.mcs);
- pos += 2 + 4 + 1; /* ext info, BF cap, antsel */
+ if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
+ goto out_err;
+ pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
+ sband->ht_cap.cap);
}
/*
@@ -1011,48 +1278,90 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
* that calculates local->scan_ies_len.
*/
+ /* insert custom IEs that go before VHT */
+ if (ie && ie_len) {
+ static const u8 before_vht[] = {
+ WLAN_EID_SSID,
+ WLAN_EID_SUPP_RATES,
+ WLAN_EID_REQUEST,
+ WLAN_EID_EXT_SUPP_RATES,
+ WLAN_EID_DS_PARAMS,
+ WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
+ WLAN_EID_HT_CAPABILITY,
+ WLAN_EID_BSS_COEX_2040,
+ WLAN_EID_EXT_CAPABILITY,
+ WLAN_EID_SSID_LIST,
+ WLAN_EID_CHANNEL_USAGE,
+ WLAN_EID_INTERWORKING,
+ /* mesh ID can't happen here */
+ /* 60 GHz can't happen here right now */
+ };
+ noffset = ieee80211_ie_split(ie, ie_len,
+ before_vht, ARRAY_SIZE(before_vht),
+ offset);
+ if (end - pos < noffset - offset)
+ goto out_err;
+ memcpy(pos, ie + offset, noffset - offset);
+ pos += noffset - offset;
+ offset = noffset;
+ }
+
+ if (sband->vht_cap.vht_supported) {
+ if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
+ goto out_err;
+ pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
+ sband->vht_cap.cap);
+ }
+
/* add any remaining custom IEs */
if (ie && ie_len) {
noffset = ie_len;
+ if (end - pos < noffset - offset)
+ goto out_err;
memcpy(pos, ie + offset, noffset - offset);
pos += noffset - offset;
}
return pos - buffer;
+ out_err:
+ WARN_ONCE(1, "not enough space for preq IEs\n");
+ return pos - buffer;
}
struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
- u8 *dst,
+ u8 *dst, u32 ratemask,
+ struct ieee80211_channel *chan,
const u8 *ssid, size_t ssid_len,
- const u8 *ie, size_t ie_len)
+ const u8 *ie, size_t ie_len,
+ bool directed)
{
struct ieee80211_local *local = sdata->local;
+ struct cfg80211_chan_def chandef;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
- size_t buf_len;
- u8 *buf;
- u8 chan;
-
- /* FIXME: come up with a proper value */
- buf = kmalloc(200 + ie_len, GFP_KERNEL);
- if (!buf) {
- printk(KERN_DEBUG "%s: failed to allocate temporary IE "
- "buffer\n", sdata->name);
- return NULL;
- }
-
- chan = ieee80211_frequency_to_channel(
- local->hw.conf.channel->center_freq);
+ int ies_len;
- buf_len = ieee80211_build_preq_ies(local, buf, ie, ie_len,
- local->hw.conf.channel->band,
- sdata->rc_rateidx_mask
- [local->hw.conf.channel->band],
- chan);
+ /*
+ * Do not send DS Channel parameter for directed probe requests
+ * in order to maximize the chance that we get a response. Some
+ * badly-behaved APs don't respond when this parameter is included.
+ */
+ chandef.width = sdata->vif.bss_conf.chandef.width;
+ if (directed)
+ chandef.chan = NULL;
+ else
+ chandef.chan = chan;
skb = ieee80211_probereq_get(&local->hw, &sdata->vif,
- ssid, ssid_len,
- buf, buf_len);
+ ssid, ssid_len, 100 + ie_len);
+ if (!skb)
+ return NULL;
+
+ ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb),
+ skb_tailroom(skb),
+ ie, ie_len, chan->band,
+ ratemask, &chandef);
+ skb_put(skb, ies_len);
if (dst) {
mgmt = (struct ieee80211_mgmt *) skb->data;
@@ -1061,54 +1370,79 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
}
IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
- kfree(buf);
return skb;
}
void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
const u8 *ssid, size_t ssid_len,
- const u8 *ie, size_t ie_len)
+ const u8 *ie, size_t ie_len,
+ u32 ratemask, bool directed, u32 tx_flags,
+ struct ieee80211_channel *channel, bool scan)
{
struct sk_buff *skb;
- skb = ieee80211_build_probe_req(sdata, dst, ssid, ssid_len, ie, ie_len);
- if (skb)
- ieee80211_tx_skb(sdata, skb);
+ skb = ieee80211_build_probe_req(sdata, dst, ratemask, channel,
+ ssid, ssid_len,
+ ie, ie_len, directed);
+ if (skb) {
+ IEEE80211_SKB_CB(skb)->flags |= tx_flags;
+ if (scan)
+ ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band);
+ else
+ ieee80211_tx_skb(sdata, skb);
+ }
}
-u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
+u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
struct ieee802_11_elems *elems,
- enum ieee80211_band band)
+ enum ieee80211_band band, u32 *basic_rates)
{
struct ieee80211_supported_band *sband;
- struct ieee80211_rate *bitrates;
size_t num_rates;
- u32 supp_rates;
- int i, j;
- sband = local->hw.wiphy->bands[band];
+ u32 supp_rates, rate_flags;
+ int i, j, shift;
+ sband = sdata->local->hw.wiphy->bands[band];
- if (!sband) {
- WARN_ON(1);
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
- }
+ rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
+ shift = ieee80211_vif_get_shift(&sdata->vif);
+
+ if (WARN_ON(!sband))
+ return 1;
- bitrates = sband->bitrates;
num_rates = sband->n_bitrates;
supp_rates = 0;
for (i = 0; i < elems->supp_rates_len +
elems->ext_supp_rates_len; i++) {
u8 rate = 0;
int own_rate;
+ bool is_basic;
if (i < elems->supp_rates_len)
rate = elems->supp_rates[i];
else if (elems->ext_supp_rates)
rate = elems->ext_supp_rates
[i - elems->supp_rates_len];
own_rate = 5 * (rate & 0x7f);
- for (j = 0; j < num_rates; j++)
- if (bitrates[j].bitrate == own_rate)
+ is_basic = !!(rate & 0x80);
+
+ if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
+ continue;
+
+ for (j = 0; j < num_rates; j++) {
+ int brate;
+ if ((rate_flags & sband->bitrates[j].flags)
+ != rate_flags)
+ continue;
+
+ brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
+ 1 << shift);
+
+ if (brate == own_rate) {
supp_rates |= BIT(j);
+ if (basic_rates && is_basic)
+ *basic_rates |= BIT(j);
+ }
+ }
}
return supp_rates;
}
@@ -1116,6 +1450,7 @@ u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
void ieee80211_stop_device(struct ieee80211_local *local)
{
ieee80211_led_radio(local, false);
+ ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
cancel_work_sync(&local->reconfig_filter);
@@ -1123,63 +1458,198 @@ void ieee80211_stop_device(struct ieee80211_local *local)
drv_stop(local);
}
+static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_chanctx *ctx;
+
+ /*
+ * We get here if during resume the device can't be restarted properly.
+ * We might also get here if this happens during HW reset, which is a
+ * slightly different situation and we need to drop all connections in
+ * the latter case.
+ *
+ * Ask cfg80211 to turn off all interfaces, this will result in more
+ * warnings but at least we'll then get into a clean stopped state.
+ */
+
+ local->resuming = false;
+ local->suspended = false;
+ local->started = false;
+
+ /* scheduled scan clearly can't be running any more, but tell
+ * cfg80211 and clear local state
+ */
+ ieee80211_sched_scan_end(local);
+
+ list_for_each_entry(sdata, &local->interfaces, list)
+ sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
+
+ /* Mark channel contexts as not being in the driver any more to avoid
+ * removing them from the driver during the shutdown process...
+ */
+ mutex_lock(&local->chanctx_mtx);
+ list_for_each_entry(ctx, &local->chanctx_list, list)
+ ctx->driver_present = false;
+ mutex_unlock(&local->chanctx_mtx);
+
+ cfg80211_shutdown_all_interfaces(local->hw.wiphy);
+}
+
+static void ieee80211_assign_chanctx(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_chanctx_conf *conf;
+ struct ieee80211_chanctx *ctx;
+
+ if (!local->use_chanctx)
+ return;
+
+ mutex_lock(&local->chanctx_mtx);
+ conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
+ lockdep_is_held(&local->chanctx_mtx));
+ if (conf) {
+ ctx = container_of(conf, struct ieee80211_chanctx, conf);
+ drv_assign_vif_chanctx(local, sdata, ctx);
+ }
+ mutex_unlock(&local->chanctx_mtx);
+}
+
int ieee80211_reconfig(struct ieee80211_local *local)
{
struct ieee80211_hw *hw = &local->hw;
struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_chanctx *ctx;
struct sta_info *sta;
- int res;
+ int res, i;
+ bool reconfig_due_to_wowlan = false;
+ struct ieee80211_sub_if_data *sched_scan_sdata;
+ bool sched_scan_stopped = false;
+#ifdef CONFIG_PM
if (local->suspended)
local->resuming = true;
- /* restart hardware */
- if (local->open_count) {
- /*
- * Upon resume hardware can sometimes be goofy due to
- * various platform / driver / bus issues, so restarting
- * the device may at times not work immediately. Propagate
- * the error.
- */
- res = drv_start(local);
- if (res) {
- WARN(local->suspended, "Hardware became unavailable "
- "upon resume. This could be a software issue "
- "prior to suspend or a hardware issue.\n");
+ if (local->wowlan) {
+ res = drv_resume(local);
+ local->wowlan = false;
+ if (res < 0) {
+ local->resuming = false;
return res;
}
+ if (res == 0)
+ goto wake_up;
+ WARN_ON(res > 1);
+ /*
+ * res is 1, which means the driver requested
+ * to go through a regular reset on wakeup.
+ */
+ reconfig_due_to_wowlan = true;
+ }
+#endif
+ /* everything else happens only if HW was up & running */
+ if (!local->open_count)
+ goto wake_up;
- ieee80211_led_radio(local, true);
+ /*
+ * Upon resume hardware can sometimes be goofy due to
+ * various platform / driver / bus issues, so restarting
+ * the device may at times not work immediately. Propagate
+ * the error.
+ */
+ res = drv_start(local);
+ if (res) {
+ if (local->suspended)
+ WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
+ else
+ WARN(1, "Hardware became unavailable during restart.\n");
+ ieee80211_handle_reconfig_failure(local);
+ return res;
}
+ /* setup fragmentation threshold */
+ drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
+
+ /* setup RTS threshold */
+ drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
+
+ /* reset coverage class */
+ drv_set_coverage_class(local, hw->wiphy->coverage_class);
+
+ ieee80211_led_radio(local, true);
+ ieee80211_mod_tpt_led_trig(local,
+ IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
+
/* add interfaces */
+ sdata = rtnl_dereference(local->monitor_sdata);
+ if (sdata) {
+ /* in HW restart it exists already */
+ WARN_ON(local->resuming);
+ res = drv_add_interface(local, sdata);
+ if (WARN_ON(res)) {
+ RCU_INIT_POINTER(local->monitor_sdata, NULL);
+ synchronize_net();
+ kfree(sdata);
+ }
+ }
+
list_for_each_entry(sdata, &local->interfaces, list) {
if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
sdata->vif.type != NL80211_IFTYPE_MONITOR &&
ieee80211_sdata_running(sdata))
- res = drv_add_interface(local, &sdata->vif);
+ res = drv_add_interface(local, sdata);
+ }
+
+ /* add channel contexts */
+ if (local->use_chanctx) {
+ mutex_lock(&local->chanctx_mtx);
+ list_for_each_entry(ctx, &local->chanctx_list, list)
+ WARN_ON(drv_add_chanctx(local, ctx));
+ mutex_unlock(&local->chanctx_mtx);
+
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ if (!ieee80211_sdata_running(sdata))
+ continue;
+ ieee80211_assign_chanctx(local, sdata);
+ }
+
+ sdata = rtnl_dereference(local->monitor_sdata);
+ if (sdata && ieee80211_sdata_running(sdata))
+ ieee80211_assign_chanctx(local, sdata);
}
/* add STAs back */
mutex_lock(&local->sta_mtx);
list_for_each_entry(sta, &local->sta_list, list) {
- if (sta->uploaded) {
- sdata = sta->sdata;
- if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
- sdata = container_of(sdata->bss,
- struct ieee80211_sub_if_data,
- u.ap);
-
- WARN_ON(drv_sta_add(local, sdata, &sta->sta));
- }
+ enum ieee80211_sta_state state;
+
+ if (!sta->uploaded)
+ continue;
+
+ /* AP-mode stations will be added later */
+ if (sta->sdata->vif.type == NL80211_IFTYPE_AP)
+ continue;
+
+ for (state = IEEE80211_STA_NOTEXIST;
+ state < sta->sta_state; state++)
+ WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
+ state + 1));
}
mutex_unlock(&local->sta_mtx);
- /* setup fragmentation threshold */
- drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
+ /* reconfigure tx conf */
+ if (hw->queues >= IEEE80211_NUM_ACS) {
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
+ sdata->vif.type == NL80211_IFTYPE_MONITOR ||
+ !ieee80211_sdata_running(sdata))
+ continue;
- /* setup RTS threshold */
- drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
+ for (i = 0; i < IEEE80211_NUM_ACS; i++)
+ drv_conf_tx(local, sdata, i,
+ &sdata->tx_conf[i]);
+ }
+ }
/* reconfigure hardware */
ieee80211_hw_config(local, ~0);
@@ -1202,27 +1672,50 @@ int ieee80211_reconfig(struct ieee80211_local *local)
BSS_CHANGED_BEACON_INT |
BSS_CHANGED_BSSID |
BSS_CHANGED_CQM |
- BSS_CHANGED_QOS;
+ BSS_CHANGED_QOS |
+ BSS_CHANGED_IDLE |
+ BSS_CHANGED_TXPOWER;
switch (sdata->vif.type) {
case NL80211_IFTYPE_STATION:
- changed |= BSS_CHANGED_ASSOC;
+ changed |= BSS_CHANGED_ASSOC |
+ BSS_CHANGED_ARP_FILTER |
+ BSS_CHANGED_PS;
+
+ /* Re-send beacon info report to the driver */
+ if (sdata->u.mgd.have_beacon)
+ changed |= BSS_CHANGED_BEACON_INFO;
+
+ sdata_lock(sdata);
ieee80211_bss_info_change_notify(sdata, changed);
+ sdata_unlock(sdata);
break;
case NL80211_IFTYPE_ADHOC:
changed |= BSS_CHANGED_IBSS;
/* fall through */
case NL80211_IFTYPE_AP:
+ changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
+
+ if (sdata->vif.type == NL80211_IFTYPE_AP) {
+ changed |= BSS_CHANGED_AP_PROBE_RESP;
+
+ if (rcu_access_pointer(sdata->u.ap.beacon))
+ drv_start_ap(local, sdata);
+ }
+
+ /* fall through */
case NL80211_IFTYPE_MESH_POINT:
- changed |= BSS_CHANGED_BEACON |
- BSS_CHANGED_BEACON_ENABLED;
- ieee80211_bss_info_change_notify(sdata, changed);
+ if (sdata->vif.bss_conf.enable_beacon) {
+ changed |= BSS_CHANGED_BEACON |
+ BSS_CHANGED_BEACON_ENABLED;
+ ieee80211_bss_info_change_notify(sdata, changed);
+ }
break;
case NL80211_IFTYPE_WDS:
- break;
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_MONITOR:
- /* ignore virtual */
+ case NL80211_IFTYPE_P2P_DEVICE:
+ /* nothing to do */
break;
case NL80211_IFTYPE_UNSPECIFIED:
case NUM_NL80211_IFTYPES:
@@ -1233,6 +1726,55 @@ int ieee80211_reconfig(struct ieee80211_local *local)
}
}
+ ieee80211_recalc_ps(local, -1);
+
+ /*
+ * The sta might be in psm against the ap (e.g. because
+ * this was the state before a hw restart), so we
+ * explicitly send a null packet in order to make sure
+ * it'll sync against the ap (and get out of psm).
+ */
+ if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ if (sdata->vif.type != NL80211_IFTYPE_STATION)
+ continue;
+ if (!sdata->u.mgd.associated)
+ continue;
+
+ ieee80211_send_nullfunc(local, sdata, 0);
+ }
+ }
+
+ /* APs are now beaconing, add back stations */
+ mutex_lock(&local->sta_mtx);
+ list_for_each_entry(sta, &local->sta_list, list) {
+ enum ieee80211_sta_state state;
+
+ if (!sta->uploaded)
+ continue;
+
+ if (sta->sdata->vif.type != NL80211_IFTYPE_AP)
+ continue;
+
+ for (state = IEEE80211_STA_NOTEXIST;
+ state < sta->sta_state; state++)
+ WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
+ state + 1));
+ }
+ mutex_unlock(&local->sta_mtx);
+
+ /* add back keys */
+ list_for_each_entry(sdata, &local->interfaces, list)
+ if (ieee80211_sdata_running(sdata))
+ ieee80211_enable_keys(sdata);
+
+ wake_up:
+ local->in_reconfig = false;
+ barrier();
+
+ if (local->monitors == local->open_count && local->monitors > 0)
+ ieee80211_add_virtual_monitor(local);
+
/*
* Clear the WLAN_STA_BLOCK_BA flag so new aggregation
* sessions can be established after a resume.
@@ -1247,25 +1789,44 @@ int ieee80211_reconfig(struct ieee80211_local *local)
mutex_lock(&local->sta_mtx);
list_for_each_entry(sta, &local->sta_list, list) {
- ieee80211_sta_tear_down_BA_sessions(sta, true);
- clear_sta_flags(sta, WLAN_STA_BLOCK_BA);
+ ieee80211_sta_tear_down_BA_sessions(
+ sta, AGG_STOP_LOCAL_REQUEST);
+ clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
}
mutex_unlock(&local->sta_mtx);
}
- /* add back keys */
- list_for_each_entry(sdata, &local->interfaces, list)
- if (ieee80211_sdata_running(sdata))
- ieee80211_enable_keys(sdata);
+ ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
+ IEEE80211_QUEUE_STOP_REASON_SUSPEND);
- ieee80211_wake_queues_by_reason(hw,
- IEEE80211_QUEUE_STOP_REASON_SUSPEND);
+ /*
+ * Reconfigure sched scan if it was interrupted by FW restart or
+ * suspend.
+ */
+ mutex_lock(&local->mtx);
+ sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
+ lockdep_is_held(&local->mtx));
+ if (sched_scan_sdata && local->sched_scan_req)
+ /*
+ * Sched scan stopped, but we don't want to report it. Instead,
+ * we're trying to reschedule.
+ */
+ if (__ieee80211_request_sched_scan_start(sched_scan_sdata,
+ local->sched_scan_req))
+ sched_scan_stopped = true;
+ mutex_unlock(&local->mtx);
+
+ if (sched_scan_stopped)
+ cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy);
/*
* If this is for hw restart things are still running.
* We may want to change that later, however.
*/
+ if (!local->suspended || reconfig_due_to_wowlan)
+ drv_restart_complete(local);
+
if (!local->suspended)
return 0;
@@ -1276,92 +1837,85 @@ int ieee80211_reconfig(struct ieee80211_local *local)
local->resuming = false;
list_for_each_entry(sdata, &local->interfaces, list) {
- switch(sdata->vif.type) {
- case NL80211_IFTYPE_STATION:
+ if (!ieee80211_sdata_running(sdata))
+ continue;
+ if (sdata->vif.type == NL80211_IFTYPE_STATION)
ieee80211_sta_restart(sdata);
- break;
- case NL80211_IFTYPE_ADHOC:
- ieee80211_ibss_restart(sdata);
- break;
- case NL80211_IFTYPE_MESH_POINT:
- ieee80211_mesh_restart(sdata);
- break;
- default:
- break;
- }
}
- add_timer(&local->sta_cleanup);
-
- mutex_lock(&local->sta_mtx);
- list_for_each_entry(sta, &local->sta_list, list)
- mesh_plink_restart(sta);
- mutex_unlock(&local->sta_mtx);
+ mod_timer(&local->sta_cleanup, jiffies + 1);
#else
WARN_ON(1);
#endif
+
return 0;
}
-static int check_mgd_smps(struct ieee80211_if_managed *ifmgd,
- enum ieee80211_smps_mode *smps_mode)
+void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
{
- if (ifmgd->associated) {
- *smps_mode = ifmgd->ap_smps;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_local *local;
+ struct ieee80211_key *key;
- if (*smps_mode == IEEE80211_SMPS_AUTOMATIC) {
- if (ifmgd->powersave)
- *smps_mode = IEEE80211_SMPS_DYNAMIC;
- else
- *smps_mode = IEEE80211_SMPS_OFF;
- }
+ if (WARN_ON(!vif))
+ return;
- return 1;
- }
+ sdata = vif_to_sdata(vif);
+ local = sdata->local;
- return 0;
+ if (WARN_ON(!local->resuming))
+ return;
+
+ if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
+ return;
+
+ sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME;
+
+ mutex_lock(&local->key_mtx);
+ list_for_each_entry(key, &sdata->key_list, list)
+ key->flags |= KEY_FLAG_TAINTED;
+ mutex_unlock(&local->key_mtx);
}
+EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
-/* must hold iflist_mtx */
-void ieee80211_recalc_smps(struct ieee80211_local *local)
+void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
{
- struct ieee80211_sub_if_data *sdata;
- enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_OFF;
- int count = 0;
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_chanctx_conf *chanctx_conf;
+ struct ieee80211_chanctx *chanctx;
- lockdep_assert_held(&local->iflist_mtx);
+ mutex_lock(&local->chanctx_mtx);
- /*
- * This function could be improved to handle multiple
- * interfaces better, but right now it makes any
- * non-station interfaces force SM PS to be turned
- * off. If there are multiple station interfaces it
- * could also use the best possible mode, e.g. if
- * one is in static and the other in dynamic then
- * dynamic is ok.
- */
+ chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
+ lockdep_is_held(&local->chanctx_mtx));
- list_for_each_entry(sdata, &local->interfaces, list) {
- if (!ieee80211_sdata_running(sdata))
- continue;
- if (sdata->vif.type != NL80211_IFTYPE_STATION)
- goto set;
+ if (WARN_ON_ONCE(!chanctx_conf))
+ goto unlock;
- count += check_mgd_smps(&sdata->u.mgd, &smps_mode);
+ chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
+ ieee80211_recalc_smps_chanctx(local, chanctx);
+ unlock:
+ mutex_unlock(&local->chanctx_mtx);
+}
- if (count > 1) {
- smps_mode = IEEE80211_SMPS_OFF;
- break;
- }
- }
+void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_chanctx_conf *chanctx_conf;
+ struct ieee80211_chanctx *chanctx;
- if (smps_mode == local->smps_mode)
- return;
+ mutex_lock(&local->chanctx_mtx);
+
+ chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
+ lockdep_is_held(&local->chanctx_mtx));
+
+ if (WARN_ON_ONCE(!chanctx_conf))
+ goto unlock;
- set:
- local->smps_mode = smps_mode;
- /* changed flag is auto-detected for this */
- ieee80211_hw_config(local, 0);
+ chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
+ ieee80211_recalc_chanctx_min_def(local, chanctx);
+ unlock:
+ mutex_unlock(&local->chanctx_mtx);
}
static bool ieee80211_id_in_list(const u8 *ids, int n_ids, u8 id)
@@ -1419,3 +1973,983 @@ size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
return pos;
}
+
+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);
+
+u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
+ u16 cap)
+{
+ __le16 tmp;
+
+ *pos++ = WLAN_EID_HT_CAPABILITY;
+ *pos++ = sizeof(struct ieee80211_ht_cap);
+ memset(pos, 0, sizeof(struct ieee80211_ht_cap));
+
+ /* capability flags */
+ tmp = cpu_to_le16(cap);
+ memcpy(pos, &tmp, sizeof(u16));
+ pos += sizeof(u16);
+
+ /* AMPDU parameters */
+ *pos++ = ht_cap->ampdu_factor |
+ (ht_cap->ampdu_density <<
+ IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
+
+ /* MCS set */
+ memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
+ pos += sizeof(ht_cap->mcs);
+
+ /* extended capabilities */
+ pos += sizeof(__le16);
+
+ /* BF capabilities */
+ pos += sizeof(__le32);
+
+ /* antenna selection */
+ pos += sizeof(u8);
+
+ return pos;
+}
+
+u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
+ u32 cap)
+{
+ __le32 tmp;
+
+ *pos++ = WLAN_EID_VHT_CAPABILITY;
+ *pos++ = sizeof(struct ieee80211_vht_cap);
+ memset(pos, 0, sizeof(struct ieee80211_vht_cap));
+
+ /* capability flags */
+ tmp = cpu_to_le32(cap);
+ memcpy(pos, &tmp, sizeof(u32));
+ pos += sizeof(u32);
+
+ /* VHT MCS set */
+ memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
+ pos += sizeof(vht_cap->vht_mcs);
+
+ return pos;
+}
+
+u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
+ const struct cfg80211_chan_def *chandef,
+ u16 prot_mode)
+{
+ struct ieee80211_ht_operation *ht_oper;
+ /* Build HT Information */
+ *pos++ = WLAN_EID_HT_OPERATION;
+ *pos++ = sizeof(struct ieee80211_ht_operation);
+ ht_oper = (struct ieee80211_ht_operation *)pos;
+ ht_oper->primary_chan = ieee80211_frequency_to_channel(
+ chandef->chan->center_freq);
+ switch (chandef->width) {
+ case NL80211_CHAN_WIDTH_160:
+ case NL80211_CHAN_WIDTH_80P80:
+ case NL80211_CHAN_WIDTH_80:
+ case NL80211_CHAN_WIDTH_40:
+ if (chandef->center_freq1 > chandef->chan->center_freq)
+ ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
+ else
+ ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
+ break;
+ default:
+ ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
+ break;
+ }
+ if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
+ chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
+ chandef->width != NL80211_CHAN_WIDTH_20)
+ ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
+
+ ht_oper->operation_mode = cpu_to_le16(prot_mode);
+ ht_oper->stbc_param = 0x0000;
+
+ /* It seems that Basic MCS set and Supported MCS set
+ are identical for the first 10 bytes */
+ memset(&ht_oper->basic_set, 0, 16);
+ memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
+
+ return pos + sizeof(struct ieee80211_ht_operation);
+}
+
+void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
+ const struct ieee80211_ht_operation *ht_oper,
+ struct cfg80211_chan_def *chandef)
+{
+ enum nl80211_channel_type channel_type;
+
+ if (!ht_oper) {
+ cfg80211_chandef_create(chandef, control_chan,
+ NL80211_CHAN_NO_HT);
+ return;
+ }
+
+ switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
+ case IEEE80211_HT_PARAM_CHA_SEC_NONE:
+ channel_type = NL80211_CHAN_HT20;
+ break;
+ case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
+ channel_type = NL80211_CHAN_HT40PLUS;
+ break;
+ case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
+ channel_type = NL80211_CHAN_HT40MINUS;
+ break;
+ default:
+ channel_type = NL80211_CHAN_NO_HT;
+ }
+
+ cfg80211_chandef_create(chandef, control_chan, channel_type);
+}
+
+int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
+ const struct ieee80211_supported_band *sband,
+ const u8 *srates, int srates_len, u32 *rates)
+{
+ u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
+ int shift = ieee80211_chandef_get_shift(chandef);
+ struct ieee80211_rate *br;
+ int brate, rate, i, j, count = 0;
+
+ *rates = 0;
+
+ for (i = 0; i < srates_len; i++) {
+ rate = srates[i] & 0x7f;
+
+ for (j = 0; j < sband->n_bitrates; j++) {
+ br = &sband->bitrates[j];
+ if ((rate_flags & br->flags) != rate_flags)
+ continue;
+
+ brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
+ if (brate == rate) {
+ *rates |= BIT(j);
+ count++;
+ break;
+ }
+ }
+ }
+ return count;
+}
+
+int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb, bool need_basic,
+ enum ieee80211_band band)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_supported_band *sband;
+ int rate, shift;
+ u8 i, rates, *pos;
+ u32 basic_rates = sdata->vif.bss_conf.basic_rates;
+ u32 rate_flags;
+
+ shift = ieee80211_vif_get_shift(&sdata->vif);
+ rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
+ sband = local->hw.wiphy->bands[band];
+ rates = 0;
+ for (i = 0; i < sband->n_bitrates; i++) {
+ if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
+ continue;
+ rates++;
+ }
+ if (rates > 8)
+ rates = 8;
+
+ if (skb_tailroom(skb) < rates + 2)
+ return -ENOMEM;
+
+ pos = skb_put(skb, rates + 2);
+ *pos++ = WLAN_EID_SUPP_RATES;
+ *pos++ = rates;
+ for (i = 0; i < rates; i++) {
+ u8 basic = 0;
+ if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
+ continue;
+
+ if (need_basic && basic_rates & BIT(i))
+ basic = 0x80;
+ rate = sband->bitrates[i].bitrate;
+ rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
+ 5 * (1 << shift));
+ *pos++ = basic | (u8) rate;
+ }
+
+ return 0;
+}
+
+int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb, bool need_basic,
+ enum ieee80211_band band)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_supported_band *sband;
+ int rate, shift;
+ u8 i, exrates, *pos;
+ u32 basic_rates = sdata->vif.bss_conf.basic_rates;
+ u32 rate_flags;
+
+ rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
+ shift = ieee80211_vif_get_shift(&sdata->vif);
+
+ sband = local->hw.wiphy->bands[band];
+ exrates = 0;
+ for (i = 0; i < sband->n_bitrates; i++) {
+ if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
+ continue;
+ exrates++;
+ }
+
+ if (exrates > 8)
+ exrates -= 8;
+ else
+ exrates = 0;
+
+ if (skb_tailroom(skb) < exrates + 2)
+ return -ENOMEM;
+
+ if (exrates) {
+ pos = skb_put(skb, exrates + 2);
+ *pos++ = WLAN_EID_EXT_SUPP_RATES;
+ *pos++ = exrates;
+ for (i = 8; i < sband->n_bitrates; i++) {
+ u8 basic = 0;
+ if ((rate_flags & sband->bitrates[i].flags)
+ != rate_flags)
+ continue;
+ if (need_basic && basic_rates & BIT(i))
+ basic = 0x80;
+ rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
+ 5 * (1 << shift));
+ *pos++ = basic | (u8) rate;
+ }
+ }
+ return 0;
+}
+
+int ieee80211_ave_rssi(struct ieee80211_vif *vif)
+{
+ struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+
+ if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
+ /* non-managed type inferfaces */
+ return 0;
+ }
+ return ifmgd->ave_beacon_signal / 16;
+}
+EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
+
+u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
+{
+ if (!mcs)
+ return 1;
+
+ /* TODO: consider rx_highest */
+
+ if (mcs->rx_mask[3])
+ return 4;
+ if (mcs->rx_mask[2])
+ return 3;
+ if (mcs->rx_mask[1])
+ return 2;
+ return 1;
+}
+
+/**
+ * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
+ * @local: mac80211 hw info struct
+ * @status: RX status
+ * @mpdu_len: total MPDU length (including FCS)
+ * @mpdu_offset: offset into MPDU to calculate timestamp at
+ *
+ * This function calculates the RX timestamp at the given MPDU offset, taking
+ * into account what the RX timestamp was. An offset of 0 will just normalize
+ * the timestamp to TSF at beginning of MPDU reception.
+ */
+u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
+ struct ieee80211_rx_status *status,
+ unsigned int mpdu_len,
+ unsigned int mpdu_offset)
+{
+ u64 ts = status->mactime;
+ struct rate_info ri;
+ u16 rate;
+
+ if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
+ return 0;
+
+ memset(&ri, 0, sizeof(ri));
+
+ /* Fill cfg80211 rate info */
+ if (status->flag & RX_FLAG_HT) {
+ ri.mcs = status->rate_idx;
+ ri.flags |= RATE_INFO_FLAGS_MCS;
+ if (status->flag & RX_FLAG_40MHZ)
+ ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
+ if (status->flag & RX_FLAG_SHORT_GI)
+ ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
+ } else if (status->flag & RX_FLAG_VHT) {
+ ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
+ ri.mcs = status->rate_idx;
+ ri.nss = status->vht_nss;
+ if (status->flag & RX_FLAG_40MHZ)
+ ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
+ if (status->vht_flag & RX_VHT_FLAG_80MHZ)
+ ri.flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
+ if (status->vht_flag & RX_VHT_FLAG_80P80MHZ)
+ ri.flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
+ if (status->vht_flag & RX_VHT_FLAG_160MHZ)
+ ri.flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
+ if (status->flag & RX_FLAG_SHORT_GI)
+ ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
+ } else {
+ struct ieee80211_supported_band *sband;
+ int shift = 0;
+ int bitrate;
+
+ if (status->flag & RX_FLAG_10MHZ)
+ shift = 1;
+ if (status->flag & RX_FLAG_5MHZ)
+ shift = 2;
+
+ sband = local->hw.wiphy->bands[status->band];
+ bitrate = sband->bitrates[status->rate_idx].bitrate;
+ ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
+ }
+
+ rate = cfg80211_calculate_bitrate(&ri);
+ if (WARN_ONCE(!rate,
+ "Invalid bitrate: flags=0x%x, idx=%d, vht_nss=%d\n",
+ status->flag, status->rate_idx, status->vht_nss))
+ return 0;
+
+ /* rewind from end of MPDU */
+ if (status->flag & RX_FLAG_MACTIME_END)
+ ts -= mpdu_len * 8 * 10 / rate;
+
+ ts += mpdu_offset * 8 * 10 / rate;
+
+ return ts;
+}
+
+void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct cfg80211_chan_def chandef;
+
+ mutex_lock(&local->mtx);
+ mutex_lock(&local->iflist_mtx);
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ /* it might be waiting for the local->mtx, but then
+ * by the time it gets it, sdata->wdev.cac_started
+ * will no longer be true
+ */
+ cancel_delayed_work(&sdata->dfs_cac_timer_work);
+
+ if (sdata->wdev.cac_started) {
+ chandef = sdata->vif.bss_conf.chandef;
+ ieee80211_vif_release_channel(sdata);
+ cfg80211_cac_event(sdata->dev,
+ &chandef,
+ NL80211_RADAR_CAC_ABORTED,
+ GFP_KERNEL);
+ }
+ }
+ mutex_unlock(&local->iflist_mtx);
+ mutex_unlock(&local->mtx);
+}
+
+void ieee80211_dfs_radar_detected_work(struct work_struct *work)
+{
+ struct ieee80211_local *local =
+ container_of(work, struct ieee80211_local, radar_detected_work);
+ struct cfg80211_chan_def chandef = local->hw.conf.chandef;
+
+ ieee80211_dfs_cac_cancel(local);
+
+ if (local->use_chanctx)
+ /* currently not handled */
+ WARN_ON(1);
+ else
+ cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
+}
+
+void ieee80211_radar_detected(struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+
+ trace_api_radar_detected(local);
+
+ ieee80211_queue_work(hw, &local->radar_detected_work);
+}
+EXPORT_SYMBOL(ieee80211_radar_detected);
+
+u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
+{
+ u32 ret;
+ int tmp;
+
+ switch (c->width) {
+ case NL80211_CHAN_WIDTH_20:
+ c->width = NL80211_CHAN_WIDTH_20_NOHT;
+ ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
+ break;
+ case NL80211_CHAN_WIDTH_40:
+ c->width = NL80211_CHAN_WIDTH_20;
+ c->center_freq1 = c->chan->center_freq;
+ ret = IEEE80211_STA_DISABLE_40MHZ |
+ IEEE80211_STA_DISABLE_VHT;
+ break;
+ case NL80211_CHAN_WIDTH_80:
+ tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
+ /* n_P40 */
+ tmp /= 2;
+ /* freq_P40 */
+ c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
+ c->width = NL80211_CHAN_WIDTH_40;
+ ret = IEEE80211_STA_DISABLE_VHT;
+ break;
+ case NL80211_CHAN_WIDTH_80P80:
+ c->center_freq2 = 0;
+ c->width = NL80211_CHAN_WIDTH_80;
+ ret = IEEE80211_STA_DISABLE_80P80MHZ |
+ IEEE80211_STA_DISABLE_160MHZ;
+ break;
+ case NL80211_CHAN_WIDTH_160:
+ /* n_P20 */
+ tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
+ /* n_P80 */
+ tmp /= 4;
+ c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
+ c->width = NL80211_CHAN_WIDTH_80;
+ ret = IEEE80211_STA_DISABLE_80P80MHZ |
+ IEEE80211_STA_DISABLE_160MHZ;
+ break;
+ default:
+ case NL80211_CHAN_WIDTH_20_NOHT:
+ WARN_ON_ONCE(1);
+ c->width = NL80211_CHAN_WIDTH_20_NOHT;
+ ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
+ break;
+ case NL80211_CHAN_WIDTH_5:
+ case NL80211_CHAN_WIDTH_10:
+ WARN_ON_ONCE(1);
+ /* keep c->width */
+ ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
+ break;
+ }
+
+ WARN_ON_ONCE(!cfg80211_chandef_valid(c));
+
+ return ret;
+}
+
+/*
+ * Returns true if smps_mode_new is strictly more restrictive than
+ * smps_mode_old.
+ */
+bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
+ enum ieee80211_smps_mode smps_mode_new)
+{
+ if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
+ smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
+ return false;
+
+ switch (smps_mode_old) {
+ case IEEE80211_SMPS_STATIC:
+ return false;
+ case IEEE80211_SMPS_DYNAMIC:
+ return smps_mode_new == IEEE80211_SMPS_STATIC;
+ case IEEE80211_SMPS_OFF:
+ return smps_mode_new != IEEE80211_SMPS_OFF;
+ default:
+ WARN_ON(1);
+ }
+
+ return false;
+}
+
+int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
+ struct cfg80211_csa_settings *csa_settings)
+{
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ struct ieee80211_local *local = sdata->local;
+ int freq;
+ int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) +
+ sizeof(mgmt->u.action.u.chan_switch);
+ u8 *pos;
+
+ if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
+ sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
+ return -EOPNOTSUPP;
+
+ skb = dev_alloc_skb(local->tx_headroom + hdr_len +
+ 5 + /* channel switch announcement element */
+ 3 + /* secondary channel offset element */
+ 8); /* mesh channel switch parameters element */
+ if (!skb)
+ return -ENOMEM;
+
+ skb_reserve(skb, local->tx_headroom);
+ mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len);
+ memset(mgmt, 0, hdr_len);
+ mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+ IEEE80211_STYPE_ACTION);
+
+ eth_broadcast_addr(mgmt->da);
+ memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
+ if (ieee80211_vif_is_mesh(&sdata->vif)) {
+ memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
+ } else {
+ struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
+ memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
+ }
+ mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
+ mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
+ pos = skb_put(skb, 5);
+ *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
+ *pos++ = 3; /* IE length */
+ *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
+ freq = csa_settings->chandef.chan->center_freq;
+ *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
+ *pos++ = csa_settings->count; /* count */
+
+ if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
+ enum nl80211_channel_type ch_type;
+
+ skb_put(skb, 3);
+ *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
+ *pos++ = 1; /* IE length */
+ ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
+ if (ch_type == NL80211_CHAN_HT40PLUS)
+ *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
+ else
+ *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
+ }
+
+ if (ieee80211_vif_is_mesh(&sdata->vif)) {
+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+
+ skb_put(skb, 8);
+ *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
+ *pos++ = 6; /* IE length */
+ *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
+ *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
+ *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
+ *pos++ |= csa_settings->block_tx ?
+ WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
+ put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
+ pos += 2;
+ put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
+ pos += 2;
+ }
+
+ ieee80211_tx_skb(sdata, skb);
+ return 0;
+}
+
+bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
+{
+ return !(cs == NULL || cs->cipher == 0 ||
+ cs->hdr_len < cs->pn_len + cs->pn_off ||
+ cs->hdr_len <= cs->key_idx_off ||
+ cs->key_idx_shift > 7 ||
+ cs->key_idx_mask == 0);
+}
+
+bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
+{
+ int i;
+
+ /* Ensure we have enough iftype bitmap space for all iftype values */
+ WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
+
+ for (i = 0; i < n; i++)
+ if (!ieee80211_cs_valid(&cs[i]))
+ return false;
+
+ return true;
+}
+
+const struct ieee80211_cipher_scheme *
+ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
+ enum nl80211_iftype iftype)
+{
+ const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
+ int n = local->hw.n_cipher_schemes;
+ int i;
+ const struct ieee80211_cipher_scheme *cs = NULL;
+
+ for (i = 0; i < n; i++) {
+ if (l[i].cipher == cipher) {
+ cs = &l[i];
+ break;
+ }
+ }
+
+ if (!cs || !(cs->iftype & BIT(iftype)))
+ return NULL;
+
+ return cs;
+}
+
+int ieee80211_cs_headroom(struct ieee80211_local *local,
+ struct cfg80211_crypto_settings *crypto,
+ enum nl80211_iftype iftype)
+{
+ const struct ieee80211_cipher_scheme *cs;
+ int headroom = IEEE80211_ENCRYPT_HEADROOM;
+ int i;
+
+ for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
+ cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
+ iftype);
+
+ if (cs && headroom < cs->hdr_len)
+ headroom = cs->hdr_len;
+ }
+
+ cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
+ if (cs && headroom < cs->hdr_len)
+ headroom = cs->hdr_len;
+
+ return headroom;
+}
+
+static bool
+ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
+{
+ s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
+ int skip;
+
+ if (end > 0)
+ return false;
+
+ /* End time is in the past, check for repetitions */
+ skip = DIV_ROUND_UP(-end, data->desc[i].interval);
+ if (data->count[i] < 255) {
+ if (data->count[i] <= skip) {
+ data->count[i] = 0;
+ return false;
+ }
+
+ data->count[i] -= skip;
+ }
+
+ data->desc[i].start += skip * data->desc[i].interval;
+
+ return true;
+}
+
+static bool
+ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
+ s32 *offset)
+{
+ bool ret = false;
+ int i;
+
+ for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
+ s32 cur;
+
+ if (!data->count[i])
+ continue;
+
+ if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
+ ret = true;
+
+ cur = data->desc[i].start - tsf;
+ if (cur > *offset)
+ continue;
+
+ cur = data->desc[i].start + data->desc[i].duration - tsf;
+ if (cur > *offset)
+ *offset = cur;
+ }
+
+ return ret;
+}
+
+static u32
+ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
+{
+ s32 offset = 0;
+ int tries = 0;
+ /*
+ * arbitrary limit, used to avoid infinite loops when combined NoA
+ * descriptors cover the full time period.
+ */
+ int max_tries = 5;
+
+ ieee80211_extend_absent_time(data, tsf, &offset);
+ do {
+ if (!ieee80211_extend_absent_time(data, tsf, &offset))
+ break;
+
+ tries++;
+ } while (tries < max_tries);
+
+ return offset;
+}
+
+void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
+{
+ u32 next_offset = BIT(31) - 1;
+ int i;
+
+ data->absent = 0;
+ data->has_next_tsf = false;
+ for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
+ s32 start;
+
+ if (!data->count[i])
+ continue;
+
+ ieee80211_extend_noa_desc(data, tsf, i);
+ start = data->desc[i].start - tsf;
+ if (start <= 0)
+ data->absent |= BIT(i);
+
+ if (next_offset > start)
+ next_offset = start;
+
+ data->has_next_tsf = true;
+ }
+
+ if (data->absent)
+ next_offset = ieee80211_get_noa_absent_time(data, tsf);
+
+ data->next_tsf = tsf + next_offset;
+}
+EXPORT_SYMBOL(ieee80211_update_p2p_noa);
+
+int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
+ struct ieee80211_noa_data *data, u32 tsf)
+{
+ int ret = 0;
+ int i;
+
+ memset(data, 0, sizeof(*data));
+
+ for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
+ const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
+
+ if (!desc->count || !desc->duration)
+ continue;
+
+ data->count[i] = desc->count;
+ data->desc[i].start = le32_to_cpu(desc->start_time);
+ data->desc[i].duration = le32_to_cpu(desc->duration);
+ data->desc[i].interval = le32_to_cpu(desc->interval);
+
+ if (data->count[i] > 1 &&
+ data->desc[i].interval < data->desc[i].duration)
+ continue;
+
+ ieee80211_extend_noa_desc(data, tsf, i);
+ ret++;
+ }
+
+ if (ret)
+ ieee80211_update_p2p_noa(data, tsf);
+
+ return ret;
+}
+EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
+
+void ieee80211_recalc_dtim(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata)
+{
+ u64 tsf = drv_get_tsf(local, sdata);
+ u64 dtim_count = 0;
+ u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
+ u8 dtim_period = sdata->vif.bss_conf.dtim_period;
+ struct ps_data *ps;
+ u8 bcns_from_dtim;
+
+ if (tsf == -1ULL || !beacon_int || !dtim_period)
+ return;
+
+ if (sdata->vif.type == NL80211_IFTYPE_AP ||
+ sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
+ if (!sdata->bss)
+ return;
+
+ ps = &sdata->bss->ps;
+ } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
+ ps = &sdata->u.mesh.ps;
+ } else {
+ return;
+ }
+
+ /*
+ * actually finds last dtim_count, mac80211 will update in
+ * __beacon_add_tim().
+ * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
+ */
+ do_div(tsf, beacon_int);
+ bcns_from_dtim = do_div(tsf, dtim_period);
+ /* just had a DTIM */
+ if (!bcns_from_dtim)
+ dtim_count = 0;
+ else
+ dtim_count = dtim_period - bcns_from_dtim;
+
+ ps->dtim_count = dtim_count;
+}
+
+int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
+ const struct cfg80211_chan_def *chandef,
+ enum ieee80211_chanctx_mode chanmode,
+ u8 radar_detect)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_sub_if_data *sdata_iter;
+ enum nl80211_iftype iftype = sdata->wdev.iftype;
+ int num[NUM_NL80211_IFTYPES];
+ struct ieee80211_chanctx *ctx;
+ int num_different_channels = 0;
+ int total = 1;
+
+ lockdep_assert_held(&local->chanctx_mtx);
+
+ if (WARN_ON(hweight32(radar_detect) > 1))
+ return -EINVAL;
+
+ if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
+ !chandef->chan))
+ return -EINVAL;
+
+ if (chandef)
+ num_different_channels = 1;
+
+ if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
+ return -EINVAL;
+
+ /* Always allow software iftypes */
+ if (local->hw.wiphy->software_iftypes & BIT(iftype)) {
+ if (radar_detect)
+ return -EINVAL;
+ return 0;
+ }
+
+ memset(num, 0, sizeof(num));
+
+ if (iftype != NL80211_IFTYPE_UNSPECIFIED)
+ num[iftype] = 1;
+
+ list_for_each_entry(ctx, &local->chanctx_list, list) {
+ if (ctx->conf.radar_enabled)
+ radar_detect |= BIT(ctx->conf.def.width);
+ if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
+ num_different_channels++;
+ continue;
+ }
+ if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
+ cfg80211_chandef_compatible(chandef,
+ &ctx->conf.def))
+ continue;
+ num_different_channels++;
+ }
+
+ list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
+ struct wireless_dev *wdev_iter;
+
+ wdev_iter = &sdata_iter->wdev;
+
+ if (sdata_iter == sdata ||
+ rcu_access_pointer(sdata_iter->vif.chanctx_conf) == NULL ||
+ local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype))
+ continue;
+
+ num[wdev_iter->iftype]++;
+ total++;
+ }
+
+ if (total == 1 && !radar_detect)
+ return 0;
+
+ return cfg80211_check_combinations(local->hw.wiphy,
+ num_different_channels,
+ radar_detect, num);
+}
+
+static void
+ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
+ void *data)
+{
+ u32 *max_num_different_channels = data;
+
+ *max_num_different_channels = max(*max_num_different_channels,
+ c->num_different_channels);
+}
+
+int ieee80211_max_num_channels(struct ieee80211_local *local)
+{
+ struct ieee80211_sub_if_data *sdata;
+ int num[NUM_NL80211_IFTYPES] = {};
+ struct ieee80211_chanctx *ctx;
+ int num_different_channels = 0;
+ u8 radar_detect = 0;
+ u32 max_num_different_channels = 1;
+ int err;
+
+ lockdep_assert_held(&local->chanctx_mtx);
+
+ list_for_each_entry(ctx, &local->chanctx_list, list) {
+ num_different_channels++;
+
+ if (ctx->conf.radar_enabled)
+ radar_detect |= BIT(ctx->conf.def.width);
+ }
+
+ list_for_each_entry_rcu(sdata, &local->interfaces, list)
+ num[sdata->wdev.iftype]++;
+
+ err = cfg80211_iter_combinations(local->hw.wiphy,
+ num_different_channels, radar_detect,
+ num, ieee80211_iter_max_chans,
+ &max_num_different_channels);
+ if (err < 0)
+ return err;
+
+ return max_num_different_channels;
+}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 08:11:16 +0000