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-rw-r--r--net/mac80211/main.c156
1 files changed, 113 insertions, 43 deletions
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index c80c4490351c..1b087fff93e7 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -93,15 +93,15 @@ static void ieee80211_reconfig_filter(struct work_struct *work)
ieee80211_configure_filter(local);
}
-int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
+static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local)
{
+ struct ieee80211_sub_if_data *sdata;
struct ieee80211_channel *chan;
- int ret = 0;
+ u32 changed = 0;
int power;
enum nl80211_channel_type channel_type;
u32 offchannel_flag;
-
- might_sleep();
+ bool scanning = false;
offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
if (local->scan_channel) {
@@ -109,19 +109,19 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
/* If scanning on oper channel, use whatever channel-type
* is currently in use.
*/
- if (chan == local->oper_channel)
+ if (chan == local->_oper_channel)
channel_type = local->_oper_channel_type;
else
channel_type = NL80211_CHAN_NO_HT;
} else if (local->tmp_channel) {
chan = local->tmp_channel;
- channel_type = local->tmp_channel_type;
+ channel_type = NL80211_CHAN_NO_HT;
} else {
- chan = local->oper_channel;
+ chan = local->_oper_channel;
channel_type = local->_oper_channel_type;
}
- if (chan != local->oper_channel ||
+ if (chan != local->_oper_channel ||
channel_type != local->_oper_channel_type)
local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
else
@@ -148,22 +148,39 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
changed |= IEEE80211_CONF_CHANGE_SMPS;
}
- if (test_bit(SCAN_SW_SCANNING, &local->scanning) ||
- test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning) ||
- test_bit(SCAN_HW_SCANNING, &local->scanning) ||
- !local->ap_power_level)
- power = chan->max_power;
- else
- power = min(chan->max_power, local->ap_power_level);
+ scanning = test_bit(SCAN_SW_SCANNING, &local->scanning) ||
+ test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning) ||
+ test_bit(SCAN_HW_SCANNING, &local->scanning);
+ power = chan->max_power;
- if (local->user_power_level >= 0)
- power = min(power, local->user_power_level);
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+ if (!rcu_access_pointer(sdata->vif.chanctx_conf))
+ continue;
+ power = min(power, sdata->vif.bss_conf.txpower);
+ }
+ rcu_read_unlock();
if (local->hw.conf.power_level != power) {
changed |= IEEE80211_CONF_CHANGE_POWER;
local->hw.conf.power_level = power;
}
+ return changed;
+}
+
+int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
+{
+ int ret = 0;
+
+ might_sleep();
+
+ if (!local->use_chanctx)
+ changed |= ieee80211_hw_conf_chan(local);
+ else
+ changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL |
+ IEEE80211_CONF_CHANGE_POWER);
+
if (changed && local->open_count) {
ret = drv_config(local, changed);
/*
@@ -359,14 +376,6 @@ void ieee80211_restart_hw(struct ieee80211_hw *hw)
}
EXPORT_SYMBOL(ieee80211_restart_hw);
-static void ieee80211_recalc_smps_work(struct work_struct *work)
-{
- struct ieee80211_local *local =
- container_of(work, struct ieee80211_local, recalc_smps);
-
- ieee80211_recalc_smps(local);
-}
-
#ifdef CONFIG_INET
static int ieee80211_ifa_changed(struct notifier_block *nb,
unsigned long data, void *arg)
@@ -465,7 +474,8 @@ ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
.tx = 0xffff,
.rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
BIT(IEEE80211_STYPE_AUTH >> 4) |
- BIT(IEEE80211_STYPE_DEAUTH >> 4),
+ BIT(IEEE80211_STYPE_DEAUTH >> 4) |
+ BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
},
[NL80211_IFTYPE_STATION] = {
.tx = 0xffff,
@@ -540,6 +550,7 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
struct ieee80211_local *local;
int priv_size, i;
struct wiphy *wiphy;
+ bool use_chanctx;
if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config ||
!ops->add_interface || !ops->remove_interface ||
@@ -549,6 +560,14 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
return NULL;
+ /* check all or no channel context operations exist */
+ i = !!ops->add_chanctx + !!ops->remove_chanctx +
+ !!ops->change_chanctx + !!ops->assign_vif_chanctx +
+ !!ops->unassign_vif_chanctx;
+ if (WARN_ON(i != 0 && i != 5))
+ return NULL;
+ use_chanctx = i == 5;
+
/* Ensure 32-byte alignment of our private data and hw private data.
* We use the wiphy priv data for both our ieee80211_local and for
* the driver's private data
@@ -584,8 +603,15 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
if (ops->remain_on_channel)
wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
- wiphy->features = NL80211_FEATURE_SK_TX_STATUS |
- NL80211_FEATURE_HT_IBSS;
+ wiphy->features |= NL80211_FEATURE_SK_TX_STATUS |
+ NL80211_FEATURE_SAE |
+ NL80211_FEATURE_HT_IBSS |
+ NL80211_FEATURE_VIF_TXPOWER;
+
+ if (!ops->hw_scan)
+ wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN |
+ NL80211_FEATURE_AP_SCAN;
+
if (!ops->set_key)
wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
@@ -599,6 +625,7 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
local->ops = ops;
+ local->use_chanctx = use_chanctx;
/* set up some defaults */
local->hw.queues = 1;
@@ -612,7 +639,9 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
IEEE80211_RADIOTAP_MCS_HAVE_GI |
IEEE80211_RADIOTAP_MCS_HAVE_BW;
- local->user_power_level = -1;
+ local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
+ IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
+ local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
INIT_LIST_HEAD(&local->interfaces);
@@ -626,6 +655,9 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
spin_lock_init(&local->filter_lock);
spin_lock_init(&local->queue_stop_reason_lock);
+ INIT_LIST_HEAD(&local->chanctx_list);
+ mutex_init(&local->chanctx_mtx);
+
/*
* The rx_skb_queue is only accessed from tasklets,
* but other SKB queues are used from within IRQ
@@ -641,7 +673,6 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
INIT_WORK(&local->restart_work, ieee80211_restart_work);
INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
- INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work);
local->smps_mode = IEEE80211_SMPS_OFF;
INIT_WORK(&local->dynamic_ps_enable_work,
@@ -719,6 +750,25 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
if ((hw->flags & IEEE80211_HW_SCAN_WHILE_IDLE) && !local->ops->hw_scan)
return -EINVAL;
+ if (!local->use_chanctx) {
+ for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
+ const struct ieee80211_iface_combination *comb;
+
+ comb = &local->hw.wiphy->iface_combinations[i];
+
+ if (comb->num_different_channels > 1)
+ return -EINVAL;
+ }
+ } else {
+ /*
+ * WDS is currently prohibited when channel contexts are used
+ * because there's no clear definition of which channel WDS
+ * type interfaces use
+ */
+ if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))
+ return -EINVAL;
+ }
+
/* Only HW csum features are currently compatible with mac80211 */
feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
NETIF_F_HW_CSUM;
@@ -728,6 +778,8 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
if (hw->max_report_rates == 0)
hw->max_report_rates = hw->max_rates;
+ local->rx_chains = 1;
+
/*
* generic code guarantees at least one band,
* set this very early because much code assumes
@@ -743,18 +795,28 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
sband = local->hw.wiphy->bands[band];
if (!sband)
continue;
- if (!local->oper_channel) {
+ if (!local->use_chanctx && !local->_oper_channel) {
/* init channel we're on */
local->hw.conf.channel =
- local->oper_channel = &sband->channels[0];
+ local->_oper_channel = &sband->channels[0];
local->hw.conf.channel_type = NL80211_CHAN_NO_HT;
}
+ cfg80211_chandef_create(&local->monitor_chandef,
+ &sband->channels[0],
+ NL80211_CHAN_NO_HT);
channels += sband->n_channels;
if (max_bitrates < sband->n_bitrates)
max_bitrates = sband->n_bitrates;
supp_ht = supp_ht || sband->ht_cap.ht_supported;
supp_vht = supp_vht || sband->vht_cap.vht_supported;
+
+ if (sband->ht_cap.ht_supported)
+ local->rx_chains =
+ max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
+ local->rx_chains);
+
+ /* TODO: consider VHT for RX chains, hopefully it's the same */
}
local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
@@ -778,19 +840,13 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
- /*
- * mac80211 doesn't support more than 1 channel, and also not more
- * than one IBSS interface
- */
+ /* mac80211 doesn't support more than one IBSS interface right now */
for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
const struct ieee80211_iface_combination *c;
int j;
c = &hw->wiphy->iface_combinations[i];
- if (c->num_different_channels > 1)
- return -EINVAL;
-
for (j = 0; j < c->n_limits; j++)
if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
c->limits[j].max > 1)
@@ -830,9 +886,21 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
if (supp_ht)
local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
- if (supp_vht)
+ if (supp_vht) {
local->scan_ies_len +=
- 2 + sizeof(struct ieee80211_vht_capabilities);
+ 2 + sizeof(struct ieee80211_vht_cap);
+
+ /*
+ * (for now at least), drivers wanting to use VHT must
+ * support channel contexts, as they contain all the
+ * necessary VHT information and the global hw config
+ * doesn't (yet)
+ */
+ if (WARN_ON(!local->use_chanctx)) {
+ result = -EINVAL;
+ goto fail_wiphy_register;
+ }
+ }
if (!local->ops->hw_scan) {
/* For hw_scan, driver needs to set these up. */
@@ -871,8 +939,10 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
local->hw.wiphy->cipher_suites,
sizeof(u32) * local->hw.wiphy->n_cipher_suites,
GFP_KERNEL);
- if (!suites)
- return -ENOMEM;
+ if (!suites) {
+ result = -ENOMEM;
+ goto fail_wiphy_register;
+ }
for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
u32 suite = local->hw.wiphy->cipher_suites[r];
if (suite == WLAN_CIPHER_SUITE_WEP40 ||
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.