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path: root/drivers/net/wireless/rt2x00/rt2x00mac.c
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Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00mac.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00mac.c152
1 files changed, 101 insertions, 51 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c
index f08c151ee4b..65a2bcd18aa 100644
--- a/drivers/net/wireless/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
@@ -52,11 +52,11 @@ static int rt2x00mac_tx_rts_cts(struct rt2x00_dev *rt2x00dev,
skb_put(skb, size);
if (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)
- ieee80211_ctstoself_get(rt2x00dev->hw, rt2x00dev->interface.id,
+ ieee80211_ctstoself_get(rt2x00dev->hw, control->vif,
frag_skb->data, frag_skb->len, control,
(struct ieee80211_cts *)(skb->data));
else
- ieee80211_rts_get(rt2x00dev->hw, rt2x00dev->interface.id,
+ ieee80211_rts_get(rt2x00dev->hw, control->vif,
frag_skb->data, frag_skb->len, control,
(struct ieee80211_rts *)(skb->data));
@@ -162,19 +162,67 @@ int rt2x00mac_add_interface(struct ieee80211_hw *hw,
struct ieee80211_if_init_conf *conf)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
- struct interface *intf = &rt2x00dev->interface;
+ struct rt2x00_intf *intf = vif_to_intf(conf->vif);
+ struct data_queue *queue =
+ rt2x00queue_get_queue(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
+ struct queue_entry *entry = NULL;
+ unsigned int i;
/*
- * Don't allow interfaces to be added while
- * either the device has disappeared or when
- * another interface is already present.
+ * Don't allow interfaces to be added
+ * the device has disappeared.
*/
if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags) ||
- is_interface_present(intf))
+ !test_bit(DEVICE_STARTED, &rt2x00dev->flags))
+ return -ENODEV;
+
+ /*
+ * When we don't support mixed interfaces (a combination
+ * of sta and ap virtual interfaces) then we can only
+ * add this interface when the rival interface count is 0.
+ */
+ if (!test_bit(DRIVER_SUPPORT_MIXED_INTERFACES, &rt2x00dev->flags) &&
+ ((conf->type == IEEE80211_IF_TYPE_AP && rt2x00dev->intf_sta_count) ||
+ (conf->type != IEEE80211_IF_TYPE_AP && rt2x00dev->intf_ap_count)))
+ return -ENOBUFS;
+
+ /*
+ * Check if we exceeded the maximum amount of supported interfaces.
+ */
+ if ((conf->type == IEEE80211_IF_TYPE_AP &&
+ rt2x00dev->intf_ap_count >= rt2x00dev->ops->max_ap_intf) ||
+ (conf->type != IEEE80211_IF_TYPE_AP &&
+ rt2x00dev->intf_sta_count >= rt2x00dev->ops->max_sta_intf))
+ return -ENOBUFS;
+
+ /*
+ * Loop through all beacon queues to find a free
+ * entry. Since there are as much beacon entries
+ * as the maximum interfaces, this search shouldn't
+ * fail.
+ */
+ for (i = 0; i < queue->limit; i++) {
+ entry = &queue->entries[i];
+ if (!__test_and_set_bit(ENTRY_BCN_ASSIGNED, &entry->flags))
+ break;
+ }
+
+ if (unlikely(i == queue->limit))
return -ENOBUFS;
- intf->id = conf->vif;
- intf->type = conf->type;
+ /*
+ * We are now absolutely sure the interface can be created,
+ * increase interface count and start initialization.
+ */
+
+ if (conf->type == IEEE80211_IF_TYPE_AP)
+ rt2x00dev->intf_ap_count++;
+ else
+ rt2x00dev->intf_sta_count++;
+
+ spin_lock_init(&intf->lock);
+ intf->beacon = entry;
+
if (conf->type == IEEE80211_IF_TYPE_AP)
memcpy(&intf->bssid, conf->mac_addr, ETH_ALEN);
memcpy(&intf->mac, conf->mac_addr, ETH_ALEN);
@@ -184,8 +232,7 @@ int rt2x00mac_add_interface(struct ieee80211_hw *hw,
* has been initialized. Otherwise the device can reset
* the MAC registers.
*/
- rt2x00lib_config_mac_addr(rt2x00dev, intf->mac);
- rt2x00lib_config_type(rt2x00dev, conf->type);
+ rt2x00lib_config_intf(rt2x00dev, intf, conf->type, intf->mac, NULL);
return 0;
}
@@ -195,7 +242,7 @@ void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_if_init_conf *conf)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
- struct interface *intf = &rt2x00dev->interface;
+ struct rt2x00_intf *intf = vif_to_intf(conf->vif);
/*
* Don't allow interfaces to be remove while
@@ -203,21 +250,27 @@ void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
* no interface is present.
*/
if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags) ||
- !is_interface_present(intf))
+ (conf->type == IEEE80211_IF_TYPE_AP && !rt2x00dev->intf_ap_count) ||
+ (conf->type != IEEE80211_IF_TYPE_AP && !rt2x00dev->intf_sta_count))
return;
- intf->id = NULL;
- intf->type = IEEE80211_IF_TYPE_INVALID;
- memset(&intf->bssid, 0x00, ETH_ALEN);
- memset(&intf->mac, 0x00, ETH_ALEN);
+ if (conf->type == IEEE80211_IF_TYPE_AP)
+ rt2x00dev->intf_ap_count--;
+ else
+ rt2x00dev->intf_sta_count--;
+
+ /*
+ * Release beacon entry so it is available for
+ * new interfaces again.
+ */
+ __clear_bit(ENTRY_BCN_ASSIGNED, &intf->beacon->flags);
/*
* Make sure the bssid and mac address registers
* are cleared to prevent false ACKing of frames.
*/
- rt2x00lib_config_mac_addr(rt2x00dev, intf->mac);
- rt2x00lib_config_bssid(rt2x00dev, intf->bssid);
- rt2x00lib_config_type(rt2x00dev, intf->type);
+ rt2x00lib_config_intf(rt2x00dev, intf,
+ IEEE80211_IF_TYPE_INVALID, NULL, NULL);
}
EXPORT_SYMBOL_GPL(rt2x00mac_remove_interface);
@@ -262,7 +315,7 @@ int rt2x00mac_config_interface(struct ieee80211_hw *hw,
struct ieee80211_if_conf *conf)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
- struct interface *intf = &rt2x00dev->interface;
+ struct rt2x00_intf *intf = vif_to_intf(vif);
int status;
/*
@@ -272,12 +325,7 @@ int rt2x00mac_config_interface(struct ieee80211_hw *hw,
if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags))
return 0;
- /*
- * If the given type does not match the configured type,
- * there has been a problem.
- */
- if (conf->type != intf->type)
- return -EINVAL;
+ spin_lock(&intf->lock);
/*
* If the interface does not work in master mode,
@@ -286,7 +334,9 @@ int rt2x00mac_config_interface(struct ieee80211_hw *hw,
*/
if (conf->type != IEEE80211_IF_TYPE_AP)
memcpy(&intf->bssid, conf->bssid, ETH_ALEN);
- rt2x00lib_config_bssid(rt2x00dev, intf->bssid);
+ rt2x00lib_config_intf(rt2x00dev, intf, conf->type, NULL, intf->bssid);
+
+ spin_unlock(&intf->lock);
/*
* We only need to initialize the beacon when master mode is enabled.
@@ -342,35 +392,35 @@ void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw,
u32 changes)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
- int short_preamble;
- int ack_timeout;
- int ack_consume_time;
- int difs;
- int preamble;
+ struct rt2x00_intf *intf = vif_to_intf(vif);
/*
- * We only support changing preamble mode.
+ * When the association status has changed we must reset the link
+ * tuner counter. This is because some drivers determine if they
+ * should perform link tuning based on the number of seconds
+ * while associated or not associated.
*/
- if (!(changes & BSS_CHANGED_ERP_PREAMBLE))
- return;
-
- short_preamble = bss_conf->use_short_preamble;
- preamble = bss_conf->use_short_preamble ?
- SHORT_PREAMBLE : PREAMBLE;
+ if (changes & BSS_CHANGED_ASSOC) {
+ rt2x00dev->link.count = 0;
- difs = (hw->conf.flags & IEEE80211_CONF_SHORT_SLOT_TIME) ?
- SHORT_DIFS : DIFS;
- ack_timeout = difs + PLCP + preamble + get_duration(ACK_SIZE, 10);
-
- ack_consume_time = SIFS + PLCP + preamble + get_duration(ACK_SIZE, 10);
+ if (bss_conf->assoc)
+ rt2x00dev->intf_associated++;
+ else
+ rt2x00dev->intf_associated--;
+ }
- if (short_preamble)
- __set_bit(CONFIG_SHORT_PREAMBLE, &rt2x00dev->flags);
- else
- __clear_bit(CONFIG_SHORT_PREAMBLE, &rt2x00dev->flags);
+ /*
+ * When the preamble mode has changed, we should perform additional
+ * configuration steps. For all other changes we are already done.
+ */
+ if (changes & BSS_CHANGED_ERP_PREAMBLE) {
+ rt2x00lib_config_preamble(rt2x00dev, intf,
+ bss_conf->use_short_preamble);
- rt2x00dev->ops->lib->config_preamble(rt2x00dev, short_preamble,
- ack_timeout, ack_consume_time);
+ spin_lock(&intf->lock);
+ memcpy(&intf->conf, bss_conf, sizeof(*bss_conf));
+ spin_unlock(&intf->lock);
+ }
}
EXPORT_SYMBOL_GPL(rt2x00mac_bss_info_changed);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-24 12:26:29 +0000