/*
- Copyright (C) 2004 - 2007 rt2x00 SourceForge Project
+ Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
<http://rt2x00.serialmonkey.com>
This program is free software; you can redistribute it and/or modify
#include "rt2x00lib.h"
static int rt2x00mac_tx_rts_cts(struct rt2x00_dev *rt2x00dev,
- struct data_ring *ring,
+ struct data_queue *queue,
struct sk_buff *frag_skb,
struct ieee80211_tx_control *control)
{
+ struct skb_frame_desc *skbdesc;
struct sk_buff *skb;
int size;
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));
- if (rt2x00dev->ops->lib->write_tx_data(rt2x00dev, ring, skb, control)) {
+ /*
+ * Initialize skb descriptor
+ */
+ skbdesc = get_skb_frame_desc(skb);
+ memset(skbdesc, 0, sizeof(*skbdesc));
+ skbdesc->flags |= FRAME_DESC_DRIVER_GENERATED;
+
+ if (rt2x00dev->ops->lib->write_tx_data(rt2x00dev, queue, skb, control)) {
WARNING(rt2x00dev, "Failed to send RTS/CTS frame.\n");
return NETDEV_TX_BUSY;
}
{
struct rt2x00_dev *rt2x00dev = hw->priv;
struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr *)skb->data;
- struct data_ring *ring;
+ enum data_queue_qid qid = mac80211_queue_to_qid(control->queue);
+ struct data_queue *queue;
+ struct skb_frame_desc *skbdesc;
u16 frame_control;
/*
}
/*
- * Determine which ring to put packet on.
+ * Determine which queue to put packet on.
*/
- ring = rt2x00lib_get_ring(rt2x00dev, control->queue);
- if (unlikely(!ring)) {
+ if (control->flags & IEEE80211_TXCTL_SEND_AFTER_DTIM &&
+ test_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags))
+ queue = rt2x00queue_get_queue(rt2x00dev, QID_ATIM);
+ else
+ queue = rt2x00queue_get_queue(rt2x00dev, qid);
+ if (unlikely(!queue)) {
ERROR(rt2x00dev,
"Attempt to send packet over invalid queue %d.\n"
- "Please file bug report to %s.\n",
- control->queue, DRV_PROJECT);
+ "Please file bug report to %s.\n", qid, DRV_PROJECT);
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
* create and queue that frame first. But make sure we have
* at least enough entries available to send this CTS/RTS
* frame as well as the data frame.
+ * Note that when the driver has set the set_rts_threshold()
+ * callback function it doesn't need software generation of
+ * neither RTS or CTS-to-self frames and handles everything
+ * inside the hardware.
*/
frame_control = le16_to_cpu(ieee80211hdr->frame_control);
if (!is_rts_frame(frame_control) && !is_cts_frame(frame_control) &&
(control->flags & (IEEE80211_TXCTL_USE_RTS_CTS |
- IEEE80211_TXCTL_USE_CTS_PROTECT))) {
- if (rt2x00_ring_free(ring) <= 1) {
+ IEEE80211_TXCTL_USE_CTS_PROTECT)) &&
+ !rt2x00dev->ops->hw->set_rts_threshold) {
+ if (rt2x00queue_available(queue) <= 1) {
ieee80211_stop_queue(rt2x00dev->hw, control->queue);
return NETDEV_TX_BUSY;
}
- if (rt2x00mac_tx_rts_cts(rt2x00dev, ring, skb, control)) {
+ if (rt2x00mac_tx_rts_cts(rt2x00dev, queue, skb, control)) {
ieee80211_stop_queue(rt2x00dev->hw, control->queue);
return NETDEV_TX_BUSY;
}
}
- if (rt2x00dev->ops->lib->write_tx_data(rt2x00dev, ring, skb, control)) {
+ /*
+ * Initialize skb descriptor
+ */
+ skbdesc = get_skb_frame_desc(skb);
+ memset(skbdesc, 0, sizeof(*skbdesc));
+
+ if (rt2x00dev->ops->lib->write_tx_data(rt2x00dev, queue, skb, control)) {
ieee80211_stop_queue(rt2x00dev->hw, control->queue);
return NETDEV_TX_BUSY;
}
- if (rt2x00_ring_full(ring))
+ if (rt2x00queue_full(queue))
ieee80211_stop_queue(rt2x00dev->hw, control->queue);
if (rt2x00dev->ops->lib->kick_tx_queue)
- rt2x00dev->ops->lib->kick_tx_queue(rt2x00dev, control->queue);
+ rt2x00dev->ops->lib->kick_tx_queue(rt2x00dev, qid);
return NETDEV_TX_OK;
}
struct ieee80211_if_init_conf *conf)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
- struct interface *intf = &rt2x00dev->interface;
-
- /* FIXME: Beaconing is broken in rt2x00. */
- if (conf->type == IEEE80211_IF_TYPE_IBSS ||
- conf->type == IEEE80211_IF_TYPE_AP) {
- ERROR(rt2x00dev,
- "rt2x00 does not support Adhoc or Master mode");
- return -EOPNOTSUPP;
- }
+ struct rt2x00_intf *intf = vif_to_intf(conf->vif);
+ struct data_queue *queue = rt2x00queue_get_queue(rt2x00dev, QID_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;
+
+ /*
+ * We don't support mixed combinations of sta and ap virtual
+ * interfaces. We can only add this interface when the rival
+ * interface count is 0.
+ */
+ if ((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;
- intf->id = conf->vif;
- intf->type = conf->type;
+ /*
+ * 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;
+
+ /*
+ * 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);
* 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);
+
+ /*
+ * Some filters depend on the current working mode. We can force
+ * an update during the next configure_filter() run by mac80211 by
+ * resetting the current packet_filter state.
+ */
+ rt2x00dev->packet_filter = 0;
return 0;
}
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
* 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 = 0;
- 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);
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;
/*
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,
*/
if (conf->type != IEEE80211_IF_TYPE_AP)
memcpy(&intf->bssid, conf->bssid, ETH_ALEN);
- rt2x00lib_config_bssid(rt2x00dev, intf->bssid);
+
+ spin_unlock(&intf->lock);
+
+ /*
+ * Call rt2x00_config_intf() outside of the spinlock context since
+ * the call will sleep for USB drivers. By using the ieee80211_if_conf
+ * values as arguments we make keep access to rt2x00_intf thread safe
+ * even without the lock.
+ */
+ rt2x00lib_config_intf(rt2x00dev, intf, conf->type, NULL, conf->bssid);
/*
* We only need to initialize the beacon when master mode is enabled.
}
EXPORT_SYMBOL_GPL(rt2x00mac_config_interface);
+void rt2x00mac_configure_filter(struct ieee80211_hw *hw,
+ unsigned int changed_flags,
+ unsigned int *total_flags,
+ int mc_count, struct dev_addr_list *mc_list)
+{
+ struct rt2x00_dev *rt2x00dev = hw->priv;
+
+ /*
+ * Mask off any flags we are going to ignore
+ * from the total_flags field.
+ */
+ *total_flags &=
+ FIF_ALLMULTI |
+ FIF_FCSFAIL |
+ FIF_PLCPFAIL |
+ FIF_CONTROL |
+ FIF_OTHER_BSS |
+ FIF_PROMISC_IN_BSS;
+
+ /*
+ * Apply some rules to the filters:
+ * - Some filters imply different filters to be set.
+ * - Some things we can't filter out at all.
+ * - Multicast filter seems to kill broadcast traffic so never use it.
+ */
+ *total_flags |= FIF_ALLMULTI;
+ if (*total_flags & FIF_OTHER_BSS ||
+ *total_flags & FIF_PROMISC_IN_BSS)
+ *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS;
+
+ /*
+ * Check if there is any work left for us.
+ */
+ if (rt2x00dev->packet_filter == *total_flags)
+ return;
+ rt2x00dev->packet_filter = *total_flags;
+
+ if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags))
+ rt2x00dev->ops->lib->config_filter(rt2x00dev, *total_flags);
+ else
+ queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work);
+}
+EXPORT_SYMBOL_GPL(rt2x00mac_configure_filter);
+
int rt2x00mac_get_stats(struct ieee80211_hw *hw,
struct ieee80211_low_level_stats *stats)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
unsigned int i;
- for (i = 0; i < hw->queues; i++)
- memcpy(&stats->data[i], &rt2x00dev->tx[i].stats,
- sizeof(rt2x00dev->tx[i].stats));
+ for (i = 0; i < hw->queues; i++) {
+ stats->data[i].len = rt2x00dev->tx[i].length;
+ stats->data[i].limit = rt2x00dev->tx[i].limit;
+ stats->data[i].count = rt2x00dev->tx[i].count;
+ }
return 0;
}
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);
+ unsigned int delayed = 0;
/*
- * 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);
+ if (bss_conf->assoc)
+ rt2x00dev->intf_associated++;
+ else
+ rt2x00dev->intf_associated--;
- ack_consume_time = SIFS + PLCP + preamble + get_duration(ACK_SIZE, 10);
+ if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags))
+ rt2x00leds_led_assoc(rt2x00dev,
+ !!rt2x00dev->intf_associated);
+ else
+ delayed |= DELAYED_LED_ASSOC;
+ }
- if (short_preamble)
- __set_bit(CONFIG_SHORT_PREAMBLE, &rt2x00dev->flags);
- else
- __clear_bit(CONFIG_SHORT_PREAMBLE, &rt2x00dev->flags);
+ /*
+ * When the erp information has changed, we should perform
+ * additional configuration steps. For all other changes we are done.
+ */
+ if (changes & BSS_CHANGED_ERP_PREAMBLE) {
+ if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags))
+ rt2x00lib_config_erp(rt2x00dev, intf, bss_conf);
+ else
+ delayed |= DELAYED_CONFIG_ERP;
+ }
- 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));
+ if (delayed) {
+ intf->delayed_flags |= delayed;
+ queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->intf_work);
+ }
+ spin_unlock(&intf->lock);
}
EXPORT_SYMBOL_GPL(rt2x00mac_bss_info_changed);
-int rt2x00mac_conf_tx(struct ieee80211_hw *hw, int queue,
+int rt2x00mac_conf_tx(struct ieee80211_hw *hw, int queue_idx,
const struct ieee80211_tx_queue_params *params)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
- struct data_ring *ring;
+ struct data_queue *queue;
- ring = rt2x00lib_get_ring(rt2x00dev, queue);
- if (unlikely(!ring))
+ queue = rt2x00queue_get_queue(rt2x00dev, queue_idx);
+ if (unlikely(!queue))
return -EINVAL;
/*
* The passed variables are stored as real value ((2^n)-1).
* Ralink registers require to know the bit number 'n'.
*/
- if (params->cw_min)
- ring->tx_params.cw_min = fls(params->cw_min);
+ if (params->cw_min > 0)
+ queue->cw_min = fls(params->cw_min);
else
- ring->tx_params.cw_min = 5; /* cw_min: 2^5 = 32. */
+ queue->cw_min = 5; /* cw_min: 2^5 = 32. */
- if (params->cw_max)
- ring->tx_params.cw_max = fls(params->cw_max);
+ if (params->cw_max > 0)
+ queue->cw_max = fls(params->cw_max);
else
- ring->tx_params.cw_max = 10; /* cw_min: 2^10 = 1024. */
+ queue->cw_max = 10; /* cw_min: 2^10 = 1024. */
- if (params->aifs)
- ring->tx_params.aifs = params->aifs;
+ if (params->aifs >= 0)
+ queue->aifs = params->aifs;
else
- ring->tx_params.aifs = 2;
+ queue->aifs = 2;
INFO(rt2x00dev,
- "Configured TX ring %d - CWmin: %d, CWmax: %d, Aifs: %d.\n",
- queue, ring->tx_params.cw_min, ring->tx_params.cw_max,
- ring->tx_params.aifs);
+ "Configured TX queue %d - CWmin: %d, CWmax: %d, Aifs: %d.\n",
+ queue_idx, queue->cw_min, queue->cw_max, queue->aifs);
return 0;
}
projects / linux-2.6 / blobdiff