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Diffstat (limited to 'net/mac80211/iface.c')
-rw-r--r--net/mac80211/iface.c143
1 files changed, 106 insertions, 37 deletions
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 7de7717ad67d..09a80b55cf5a 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -42,6 +42,41 @@
* by either the RTNL, the iflist_mtx or RCU.
*/
+bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_chanctx_conf *chanctx_conf;
+ int power;
+
+ rcu_read_lock();
+ chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+ if (!chanctx_conf) {
+ rcu_read_unlock();
+ return false;
+ }
+
+ power = chanctx_conf->def.chan->max_power;
+ rcu_read_unlock();
+
+ if (sdata->user_power_level != IEEE80211_UNSET_POWER_LEVEL)
+ power = min(power, sdata->user_power_level);
+
+ if (sdata->ap_power_level != IEEE80211_UNSET_POWER_LEVEL)
+ power = min(power, sdata->ap_power_level);
+
+ if (power != sdata->vif.bss_conf.txpower) {
+ sdata->vif.bss_conf.txpower = power;
+ ieee80211_hw_config(sdata->local, 0);
+ return true;
+ }
+
+ return false;
+}
+
+void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata)
+{
+ if (__ieee80211_recalc_txpower(sdata))
+ ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_TXPOWER);
+}
static u32 ieee80211_idle_off(struct ieee80211_local *local,
const char *reason)
@@ -188,6 +223,47 @@ static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
return 0;
}
+static int ieee80211_verify_mac(struct ieee80211_local *local, u8 *addr)
+{
+ struct ieee80211_sub_if_data *sdata;
+ u64 new, mask, tmp;
+ u8 *m;
+ int ret = 0;
+
+ if (is_zero_ether_addr(local->hw.wiphy->addr_mask))
+ return 0;
+
+ m = addr;
+ new = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) |
+ ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) |
+ ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8);
+
+ m = local->hw.wiphy->addr_mask;
+ mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) |
+ ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) |
+ ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8);
+
+
+ mutex_lock(&local->iflist_mtx);
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
+ continue;
+
+ m = sdata->vif.addr;
+ tmp = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) |
+ ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) |
+ ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8);
+
+ if ((new & ~mask) != (tmp & ~mask)) {
+ ret = -EINVAL;
+ break;
+ }
+ }
+ mutex_unlock(&local->iflist_mtx);
+
+ return ret;
+}
+
static int ieee80211_change_mac(struct net_device *dev, void *addr)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
@@ -197,6 +273,10 @@ static int ieee80211_change_mac(struct net_device *dev, void *addr)
if (ieee80211_sdata_running(sdata))
return -EBUSY;
+ ret = ieee80211_verify_mac(sdata->local, sa->sa_data);
+ if (ret)
+ return ret;
+
ret = eth_mac_addr(dev, sa);
if (ret == 0)
@@ -380,6 +460,14 @@ static int ieee80211_add_virtual_monitor(struct ieee80211_local *local)
goto out_unlock;
}
+ ret = ieee80211_vif_use_channel(sdata, &local->monitor_chandef,
+ IEEE80211_CHANCTX_EXCLUSIVE);
+ if (ret) {
+ drv_remove_interface(local, sdata);
+ kfree(sdata);
+ goto out_unlock;
+ }
+
rcu_assign_pointer(local->monitor_sdata, sdata);
out_unlock:
mutex_unlock(&local->iflist_mtx);
@@ -403,6 +491,8 @@ static void ieee80211_del_virtual_monitor(struct ieee80211_local *local)
rcu_assign_pointer(local->monitor_sdata, NULL);
synchronize_net();
+ ieee80211_vif_release_channel(sdata);
+
drv_remove_interface(local, sdata);
kfree(sdata);
@@ -665,7 +755,6 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, *tmp;
u32 hw_reconf_flags = 0;
int i;
- enum nl80211_channel_type orig_ct;
clear_bit(SDATA_STATE_RUNNING, &sdata->state);
@@ -729,34 +818,17 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
del_timer_sync(&local->dynamic_ps_timer);
cancel_work_sync(&local->dynamic_ps_enable_work);
+ cancel_work_sync(&sdata->recalc_smps);
+
/* APs need special treatment */
if (sdata->vif.type == NL80211_IFTYPE_AP) {
struct ieee80211_sub_if_data *vlan, *tmpsdata;
- struct beacon_data *old_beacon =
- rtnl_dereference(sdata->u.ap.beacon);
- struct probe_resp *old_probe_resp =
- rtnl_dereference(sdata->u.ap.probe_resp);
-
- /* sdata_running will return false, so this will disable */
- ieee80211_bss_info_change_notify(sdata,
- BSS_CHANGED_BEACON_ENABLED);
-
- /* remove beacon and probe response */
- RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
- RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
- synchronize_rcu();
- kfree(old_beacon);
- kfree(old_probe_resp);
/* down all dependent devices, that is VLANs */
list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans,
u.vlan.list)
dev_close(vlan->dev);
WARN_ON(!list_empty(&sdata->u.ap.vlans));
-
- /* free all potentially still buffered bcast frames */
- local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps_bc_buf);
- skb_queue_purge(&sdata->u.ap.ps_bc_buf);
} else if (sdata->vif.type == NL80211_IFTYPE_STATION) {
ieee80211_mgd_stop(sdata);
}
@@ -790,7 +862,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
rcu_assign_pointer(local->p2p_sdata, NULL);
/* fall through */
default:
- flush_work(&sdata->work);
+ cancel_work_sync(&sdata->work);
/*
* When we get here, the interface is marked down.
* Call rcu_barrier() to wait both for the RX path
@@ -837,14 +909,8 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
hw_reconf_flags = 0;
}
- /* Re-calculate channel-type, in case there are multiple vifs
- * on different channel types.
- */
- orig_ct = local->_oper_channel_type;
- ieee80211_set_channel_type(local, NULL, NL80211_CHAN_NO_HT);
-
/* do after stop to avoid reconfiguring when we stop anyway */
- if (hw_reconf_flags || (orig_ct != local->_oper_channel_type))
+ if (hw_reconf_flags)
ieee80211_hw_config(local, hw_reconf_flags);
spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
@@ -1121,6 +1187,13 @@ static void ieee80211_iface_work(struct work_struct *work)
}
}
+static void ieee80211_recalc_smps_work(struct work_struct *work)
+{
+ struct ieee80211_sub_if_data *sdata =
+ container_of(work, struct ieee80211_sub_if_data, recalc_smps);
+
+ ieee80211_recalc_smps(sdata);
+}
/*
* Helper function to initialise an interface to a specific type.
@@ -1149,6 +1222,7 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
skb_queue_head_init(&sdata->skb_queue);
INIT_WORK(&sdata->work, ieee80211_iface_work);
+ INIT_WORK(&sdata->recalc_smps, ieee80211_recalc_smps_work);
switch (type) {
case NL80211_IFTYPE_P2P_GO:
@@ -1157,7 +1231,7 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
sdata->vif.p2p = true;
/* fall through */
case NL80211_IFTYPE_AP:
- skb_queue_head_init(&sdata->u.ap.ps_bc_buf);
+ skb_queue_head_init(&sdata->u.ap.ps.bc_buf);
INIT_LIST_HEAD(&sdata->u.ap.vlans);
break;
case NL80211_IFTYPE_P2P_CLIENT:
@@ -1282,11 +1356,6 @@ int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
if (type == ieee80211_vif_type_p2p(&sdata->vif))
return 0;
- /* Setting ad-hoc mode on non-IBSS channel is not supported. */
- if (sdata->local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS &&
- type == NL80211_IFTYPE_ADHOC)
- return -EOPNOTSUPP;
-
if (ieee80211_sdata_running(sdata)) {
ret = ieee80211_runtime_change_iftype(sdata, type);
if (ret)
@@ -1298,9 +1367,6 @@ int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
}
/* reset some values that shouldn't be kept across type changes */
- sdata->vif.bss_conf.basic_rates =
- ieee80211_mandatory_rates(sdata->local,
- sdata->local->oper_channel->band);
sdata->drop_unencrypted = 0;
if (type == NL80211_IFTYPE_STATION)
sdata->u.mgd.use_4addr = false;
@@ -1523,6 +1589,9 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
ieee80211_set_default_queues(sdata);
+ sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
+ sdata->user_power_level = local->user_power_level;
+
/* setup type-dependent data */
ieee80211_setup_sdata(sdata, type);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.