// SPDX-License-Identifier: GPL-2.0-or-later
|
/*
|
Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
|
<http://rt2x00.serialmonkey.com>
|
|
*/
|
|
/*
|
Module: rt2x00mac
|
Abstract: rt2x00 generic mac80211 routines.
|
*/
|
|
#include <linux/kernel.h>
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#include <linux/module.h>
|
|
#include "rt2x00.h"
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#include "rt2x00lib.h"
|
|
static int rt2x00mac_tx_rts_cts(struct rt2x00_dev *rt2x00dev,
|
struct data_queue *queue,
|
struct sk_buff *frag_skb)
|
{
|
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(frag_skb);
|
struct ieee80211_tx_info *rts_info;
|
struct sk_buff *skb;
|
unsigned int data_length;
|
int retval = 0;
|
|
if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
|
data_length = sizeof(struct ieee80211_cts);
|
else
|
data_length = sizeof(struct ieee80211_rts);
|
|
skb = dev_alloc_skb(data_length + rt2x00dev->hw->extra_tx_headroom);
|
if (unlikely(!skb)) {
|
rt2x00_warn(rt2x00dev, "Failed to create RTS/CTS frame\n");
|
return -ENOMEM;
|
}
|
|
skb_reserve(skb, rt2x00dev->hw->extra_tx_headroom);
|
skb_put(skb, data_length);
|
|
/*
|
* Copy TX information over from original frame to
|
* RTS/CTS frame. Note that we set the no encryption flag
|
* since we don't want this frame to be encrypted.
|
* RTS frames should be acked, while CTS-to-self frames
|
* should not. The ready for TX flag is cleared to prevent
|
* it being automatically send when the descriptor is
|
* written to the hardware.
|
*/
|
memcpy(skb->cb, frag_skb->cb, sizeof(skb->cb));
|
rts_info = IEEE80211_SKB_CB(skb);
|
rts_info->control.rates[0].flags &= ~IEEE80211_TX_RC_USE_RTS_CTS;
|
rts_info->control.rates[0].flags &= ~IEEE80211_TX_RC_USE_CTS_PROTECT;
|
|
if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
|
rts_info->flags |= IEEE80211_TX_CTL_NO_ACK;
|
else
|
rts_info->flags &= ~IEEE80211_TX_CTL_NO_ACK;
|
|
/* Disable hardware encryption */
|
rts_info->control.hw_key = NULL;
|
|
/*
|
* RTS/CTS frame should use the length of the frame plus any
|
* encryption overhead that will be added by the hardware.
|
*/
|
data_length += rt2x00crypto_tx_overhead(rt2x00dev, skb);
|
|
if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
|
ieee80211_ctstoself_get(rt2x00dev->hw, tx_info->control.vif,
|
frag_skb->data, data_length, tx_info,
|
(struct ieee80211_cts *)(skb->data));
|
else
|
ieee80211_rts_get(rt2x00dev->hw, tx_info->control.vif,
|
frag_skb->data, data_length, tx_info,
|
(struct ieee80211_rts *)(skb->data));
|
|
retval = rt2x00queue_write_tx_frame(queue, skb, NULL, true);
|
if (retval) {
|
dev_kfree_skb_any(skb);
|
rt2x00_warn(rt2x00dev, "Failed to send RTS/CTS frame\n");
|
}
|
|
return retval;
|
}
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|
void rt2x00mac_tx(struct ieee80211_hw *hw,
|
struct ieee80211_tx_control *control,
|
struct sk_buff *skb)
|
{
|
struct rt2x00_dev *rt2x00dev = hw->priv;
|
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
|
enum data_queue_qid qid = skb_get_queue_mapping(skb);
|
struct data_queue *queue = NULL;
|
|
/*
|
* Mac80211 might be calling this function while we are trying
|
* to remove the device or perhaps suspending it.
|
* Note that we can only stop the TX queues inside the TX path
|
* due to possible race conditions in mac80211.
|
*/
|
if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
|
goto exit_free_skb;
|
|
/*
|
* Use the ATIM queue if appropriate and present.
|
*/
|
if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM &&
|
rt2x00_has_cap_flag(rt2x00dev, REQUIRE_ATIM_QUEUE))
|
qid = QID_ATIM;
|
|
queue = rt2x00queue_get_tx_queue(rt2x00dev, qid);
|
if (unlikely(!queue)) {
|
rt2x00_err(rt2x00dev,
|
"Attempt to send packet over invalid queue %d\n"
|
"Please file bug report to %s\n", qid, DRV_PROJECT);
|
goto exit_free_skb;
|
}
|
|
/*
|
* If CTS/RTS is required. create and queue that frame first.
|
* 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
|
* either RTS or CTS-to-self frame and handles everything
|
* inside the hardware.
|
*/
|
if (!rt2x00dev->ops->hw->set_rts_threshold &&
|
(tx_info->control.rates[0].flags & (IEEE80211_TX_RC_USE_RTS_CTS |
|
IEEE80211_TX_RC_USE_CTS_PROTECT))) {
|
if (rt2x00queue_available(queue) <= 1) {
|
/*
|
* Recheck for full queue under lock to avoid race
|
* conditions with rt2x00lib_txdone().
|
*/
|
spin_lock(&queue->tx_lock);
|
if (rt2x00queue_threshold(queue))
|
rt2x00queue_pause_queue(queue);
|
spin_unlock(&queue->tx_lock);
|
|
goto exit_free_skb;
|
}
|
|
if (rt2x00mac_tx_rts_cts(rt2x00dev, queue, skb))
|
goto exit_free_skb;
|
}
|
|
if (unlikely(rt2x00queue_write_tx_frame(queue, skb, control->sta, false)))
|
goto exit_free_skb;
|
|
return;
|
|
exit_free_skb:
|
ieee80211_free_txskb(hw, skb);
|
}
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EXPORT_SYMBOL_GPL(rt2x00mac_tx);
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|
int rt2x00mac_start(struct ieee80211_hw *hw)
|
{
|
struct rt2x00_dev *rt2x00dev = hw->priv;
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|
if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
|
return 0;
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|
if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) {
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/*
|
* This is special case for ieee80211_restart_hw(), otherwise
|
* mac80211 never call start() two times in row without stop();
|
*/
|
set_bit(DEVICE_STATE_RESET, &rt2x00dev->flags);
|
rt2x00dev->ops->lib->pre_reset_hw(rt2x00dev);
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rt2x00lib_stop(rt2x00dev);
|
}
|
return rt2x00lib_start(rt2x00dev);
|
}
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EXPORT_SYMBOL_GPL(rt2x00mac_start);
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void rt2x00mac_stop(struct ieee80211_hw *hw)
|
{
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struct rt2x00_dev *rt2x00dev = hw->priv;
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|
if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
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return;
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rt2x00lib_stop(rt2x00dev);
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}
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EXPORT_SYMBOL_GPL(rt2x00mac_stop);
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void
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rt2x00mac_reconfig_complete(struct ieee80211_hw *hw,
|
enum ieee80211_reconfig_type reconfig_type)
|
{
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struct rt2x00_dev *rt2x00dev = hw->priv;
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if (reconfig_type == IEEE80211_RECONFIG_TYPE_RESTART)
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clear_bit(DEVICE_STATE_RESET, &rt2x00dev->flags);
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}
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EXPORT_SYMBOL_GPL(rt2x00mac_reconfig_complete);
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int rt2x00mac_add_interface(struct ieee80211_hw *hw,
|
struct ieee80211_vif *vif)
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{
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struct rt2x00_dev *rt2x00dev = hw->priv;
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struct rt2x00_intf *intf = vif_to_intf(vif);
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struct data_queue *queue = rt2x00dev->bcn;
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struct queue_entry *entry = NULL;
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unsigned int i;
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|
/*
|
* Don't allow interfaces to be added
|
* the device has disappeared.
|
*/
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if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) ||
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!test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags))
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return -ENODEV;
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|
/*
|
* 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.
|
*/
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for (i = 0; i < queue->limit; i++) {
|
entry = &queue->entries[i];
|
if (!test_and_set_bit(ENTRY_BCN_ASSIGNED, &entry->flags))
|
break;
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}
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|
if (unlikely(i == queue->limit))
|
return -ENOBUFS;
|
|
/*
|
* We are now absolutely sure the interface can be created,
|
* increase interface count and start initialization.
|
*/
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|
if (vif->type == NL80211_IFTYPE_AP)
|
rt2x00dev->intf_ap_count++;
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else
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rt2x00dev->intf_sta_count++;
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|
mutex_init(&intf->beacon_skb_mutex);
|
intf->beacon = entry;
|
|
/*
|
* The MAC address must be configured after the device
|
* has been initialized. Otherwise the device can reset
|
* the MAC registers.
|
* The BSSID address must only be configured in AP mode,
|
* however we should not send an empty BSSID address for
|
* STA interfaces at this time, since this can cause
|
* invalid behavior in the device.
|
*/
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rt2x00lib_config_intf(rt2x00dev, intf, vif->type,
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vif->addr, NULL);
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/*
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* 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.
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*/
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rt2x00dev->packet_filter = 0;
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return 0;
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}
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EXPORT_SYMBOL_GPL(rt2x00mac_add_interface);
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void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
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struct ieee80211_vif *vif)
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{
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struct rt2x00_dev *rt2x00dev = hw->priv;
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struct rt2x00_intf *intf = vif_to_intf(vif);
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/*
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* Don't allow interfaces to be remove while
|
* either the device has disappeared or when
|
* no interface is present.
|
*/
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if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) ||
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(vif->type == NL80211_IFTYPE_AP && !rt2x00dev->intf_ap_count) ||
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(vif->type != NL80211_IFTYPE_AP && !rt2x00dev->intf_sta_count))
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return;
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if (vif->type == NL80211_IFTYPE_AP)
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rt2x00dev->intf_ap_count--;
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else
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rt2x00dev->intf_sta_count--;
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/*
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* Release beacon entry so it is available for
|
* new interfaces again.
|
*/
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clear_bit(ENTRY_BCN_ASSIGNED, &intf->beacon->flags);
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/*
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* Make sure the bssid and mac address registers
|
* are cleared to prevent false ACKing of frames.
|
*/
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rt2x00lib_config_intf(rt2x00dev, intf,
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NL80211_IFTYPE_UNSPECIFIED, NULL, NULL);
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}
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EXPORT_SYMBOL_GPL(rt2x00mac_remove_interface);
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int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed)
|
{
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struct rt2x00_dev *rt2x00dev = hw->priv;
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struct ieee80211_conf *conf = &hw->conf;
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/*
|
* mac80211 might be calling this function while we are trying
|
* to remove the device or perhaps suspending it.
|
*/
|
if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
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return 0;
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/*
|
* Some configuration parameters (e.g. channel and antenna values) can
|
* only be set when the radio is enabled, but do require the RX to
|
* be off. During this period we should keep link tuning enabled,
|
* if for any reason the link tuner must be reset, this will be
|
* handled by rt2x00lib_config().
|
*/
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rt2x00queue_stop_queue(rt2x00dev->rx);
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|
/* Do not race with with link tuner. */
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mutex_lock(&rt2x00dev->conf_mutex);
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/*
|
* When we've just turned on the radio, we want to reprogram
|
* everything to ensure a consistent state
|
*/
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rt2x00lib_config(rt2x00dev, conf, changed);
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|
/*
|
* After the radio has been enabled we need to configure
|
* the antenna to the default settings. rt2x00lib_config_antenna()
|
* should determine if any action should be taken based on
|
* checking if diversity has been enabled or no antenna changes
|
* have been made since the last configuration change.
|
*/
|
rt2x00lib_config_antenna(rt2x00dev, rt2x00dev->default_ant);
|
|
mutex_unlock(&rt2x00dev->conf_mutex);
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|
/* Turn RX back on */
|
rt2x00queue_start_queue(rt2x00dev->rx);
|
|
return 0;
|
}
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EXPORT_SYMBOL_GPL(rt2x00mac_config);
|
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void rt2x00mac_configure_filter(struct ieee80211_hw *hw,
|
unsigned int changed_flags,
|
unsigned int *total_flags,
|
u64 multicast)
|
{
|
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_PSPOLL |
|
FIF_OTHER_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 the device has a single filter for all control frames,
|
* FIF_CONTROL and FIF_PSPOLL flags imply each other.
|
* And if the device has more than one filter for control frames
|
* of different types, but has no a separate filter for PS Poll frames,
|
* FIF_CONTROL flag implies FIF_PSPOLL.
|
*/
|
if (!rt2x00_has_cap_control_filters(rt2x00dev)) {
|
if (*total_flags & FIF_CONTROL || *total_flags & FIF_PSPOLL)
|
*total_flags |= FIF_CONTROL | FIF_PSPOLL;
|
}
|
if (!rt2x00_has_cap_control_filter_pspoll(rt2x00dev)) {
|
if (*total_flags & FIF_CONTROL)
|
*total_flags |= FIF_PSPOLL;
|
}
|
|
rt2x00dev->packet_filter = *total_flags;
|
|
rt2x00dev->ops->lib->config_filter(rt2x00dev, *total_flags);
|
}
|
EXPORT_SYMBOL_GPL(rt2x00mac_configure_filter);
|
|
static void rt2x00mac_set_tim_iter(void *data, u8 *mac,
|
struct ieee80211_vif *vif)
|
{
|
struct rt2x00_intf *intf = vif_to_intf(vif);
|
|
if (vif->type != NL80211_IFTYPE_AP &&
|
vif->type != NL80211_IFTYPE_ADHOC &&
|
vif->type != NL80211_IFTYPE_MESH_POINT &&
|
vif->type != NL80211_IFTYPE_WDS)
|
return;
|
|
set_bit(DELAYED_UPDATE_BEACON, &intf->delayed_flags);
|
}
|
|
int rt2x00mac_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
|
bool set)
|
{
|
struct rt2x00_dev *rt2x00dev = hw->priv;
|
|
if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
|
return 0;
|
|
ieee80211_iterate_active_interfaces_atomic(
|
rt2x00dev->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
|
rt2x00mac_set_tim_iter, rt2x00dev);
|
|
/* queue work to upodate the beacon template */
|
ieee80211_queue_work(rt2x00dev->hw, &rt2x00dev->intf_work);
|
return 0;
|
}
|
EXPORT_SYMBOL_GPL(rt2x00mac_set_tim);
|
|
#ifdef CONFIG_RT2X00_LIB_CRYPTO
|
static void memcpy_tkip(struct rt2x00lib_crypto *crypto, u8 *key, u8 key_len)
|
{
|
if (key_len > NL80211_TKIP_DATA_OFFSET_ENCR_KEY)
|
memcpy(crypto->key,
|
&key[NL80211_TKIP_DATA_OFFSET_ENCR_KEY],
|
sizeof(crypto->key));
|
|
if (key_len > NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
|
memcpy(crypto->tx_mic,
|
&key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
|
sizeof(crypto->tx_mic));
|
|
if (key_len > NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY)
|
memcpy(crypto->rx_mic,
|
&key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
|
sizeof(crypto->rx_mic));
|
}
|
|
int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
|
struct ieee80211_vif *vif, struct ieee80211_sta *sta,
|
struct ieee80211_key_conf *key)
|
{
|
struct rt2x00_dev *rt2x00dev = hw->priv;
|
int (*set_key) (struct rt2x00_dev *rt2x00dev,
|
struct rt2x00lib_crypto *crypto,
|
struct ieee80211_key_conf *key);
|
struct rt2x00lib_crypto crypto;
|
static const u8 bcast_addr[ETH_ALEN] =
|
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, };
|
struct rt2x00_sta *sta_priv = NULL;
|
|
if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
|
return 0;
|
|
/* The hardware can't do MFP */
|
if (!rt2x00_has_cap_hw_crypto(rt2x00dev) || (sta && sta->mfp))
|
return -EOPNOTSUPP;
|
|
/*
|
* To support IBSS RSN, don't program group keys in IBSS, the
|
* hardware will then not attempt to decrypt the frames.
|
*/
|
if (vif->type == NL80211_IFTYPE_ADHOC &&
|
!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
|
return -EOPNOTSUPP;
|
|
if (key->keylen > 32)
|
return -ENOSPC;
|
|
memset(&crypto, 0, sizeof(crypto));
|
|
crypto.bssidx = rt2x00lib_get_bssidx(rt2x00dev, vif);
|
crypto.cipher = rt2x00crypto_key_to_cipher(key);
|
if (crypto.cipher == CIPHER_NONE)
|
return -EOPNOTSUPP;
|
if (crypto.cipher == CIPHER_TKIP && rt2x00_is_usb(rt2x00dev))
|
return -EOPNOTSUPP;
|
|
crypto.cmd = cmd;
|
|
if (sta) {
|
crypto.address = sta->addr;
|
sta_priv = sta_to_rt2x00_sta(sta);
|
crypto.wcid = sta_priv->wcid;
|
} else
|
crypto.address = bcast_addr;
|
|
if (crypto.cipher == CIPHER_TKIP)
|
memcpy_tkip(&crypto, &key->key[0], key->keylen);
|
else
|
memcpy(crypto.key, &key->key[0], key->keylen);
|
/*
|
* Each BSS has a maximum of 4 shared keys.
|
* Shared key index values:
|
* 0) BSS0 key0
|
* 1) BSS0 key1
|
* ...
|
* 4) BSS1 key0
|
* ...
|
* 8) BSS2 key0
|
* ...
|
* Both pairwise as shared key indeces are determined by
|
* driver. This is required because the hardware requires
|
* keys to be assigned in correct order (When key 1 is
|
* provided but key 0 is not, then the key is not found
|
* by the hardware during RX).
|
*/
|
if (cmd == SET_KEY)
|
key->hw_key_idx = 0;
|
|
if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
|
set_key = rt2x00dev->ops->lib->config_pairwise_key;
|
else
|
set_key = rt2x00dev->ops->lib->config_shared_key;
|
|
if (!set_key)
|
return -EOPNOTSUPP;
|
|
return set_key(rt2x00dev, &crypto, key);
|
}
|
EXPORT_SYMBOL_GPL(rt2x00mac_set_key);
|
#endif /* CONFIG_RT2X00_LIB_CRYPTO */
|
|
void rt2x00mac_sw_scan_start(struct ieee80211_hw *hw,
|
struct ieee80211_vif *vif,
|
const u8 *mac_addr)
|
{
|
struct rt2x00_dev *rt2x00dev = hw->priv;
|
set_bit(DEVICE_STATE_SCANNING, &rt2x00dev->flags);
|
rt2x00link_stop_tuner(rt2x00dev);
|
}
|
EXPORT_SYMBOL_GPL(rt2x00mac_sw_scan_start);
|
|
void rt2x00mac_sw_scan_complete(struct ieee80211_hw *hw,
|
struct ieee80211_vif *vif)
|
{
|
struct rt2x00_dev *rt2x00dev = hw->priv;
|
clear_bit(DEVICE_STATE_SCANNING, &rt2x00dev->flags);
|
rt2x00link_start_tuner(rt2x00dev);
|
}
|
EXPORT_SYMBOL_GPL(rt2x00mac_sw_scan_complete);
|
|
int rt2x00mac_get_stats(struct ieee80211_hw *hw,
|
struct ieee80211_low_level_stats *stats)
|
{
|
struct rt2x00_dev *rt2x00dev = hw->priv;
|
|
/*
|
* The dot11ACKFailureCount, dot11RTSFailureCount and
|
* dot11RTSSuccessCount are updated in interrupt time.
|
* dot11FCSErrorCount is updated in the link tuner.
|
*/
|
memcpy(stats, &rt2x00dev->low_level_stats, sizeof(*stats));
|
|
return 0;
|
}
|
EXPORT_SYMBOL_GPL(rt2x00mac_get_stats);
|
|
void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw,
|
struct ieee80211_vif *vif,
|
struct ieee80211_bss_conf *bss_conf,
|
u32 changes)
|
{
|
struct rt2x00_dev *rt2x00dev = hw->priv;
|
struct rt2x00_intf *intf = vif_to_intf(vif);
|
|
/*
|
* mac80211 might be calling this function while we are trying
|
* to remove the device or perhaps suspending it.
|
*/
|
if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
|
return;
|
|
/*
|
* Update the BSSID.
|
*/
|
if (changes & BSS_CHANGED_BSSID)
|
rt2x00lib_config_intf(rt2x00dev, intf, vif->type, NULL,
|
bss_conf->bssid);
|
|
/*
|
* Start/stop beaconing.
|
*/
|
if (changes & BSS_CHANGED_BEACON_ENABLED) {
|
mutex_lock(&intf->beacon_skb_mutex);
|
if (!bss_conf->enable_beacon && intf->enable_beacon) {
|
rt2x00dev->intf_beaconing--;
|
intf->enable_beacon = false;
|
|
if (rt2x00dev->intf_beaconing == 0) {
|
/*
|
* Last beaconing interface disabled
|
* -> stop beacon queue.
|
*/
|
rt2x00queue_stop_queue(rt2x00dev->bcn);
|
}
|
/*
|
* Clear beacon in the H/W for this vif. This is needed
|
* to disable beaconing on this particular interface
|
* and keep it running on other interfaces.
|
*/
|
rt2x00queue_clear_beacon(rt2x00dev, vif);
|
} else if (bss_conf->enable_beacon && !intf->enable_beacon) {
|
rt2x00dev->intf_beaconing++;
|
intf->enable_beacon = true;
|
/*
|
* Upload beacon to the H/W. This is only required on
|
* USB devices. PCI devices fetch beacons periodically.
|
*/
|
if (rt2x00_is_usb(rt2x00dev))
|
rt2x00queue_update_beacon(rt2x00dev, vif);
|
|
if (rt2x00dev->intf_beaconing == 1) {
|
/*
|
* First beaconing interface enabled
|
* -> start beacon queue.
|
*/
|
rt2x00queue_start_queue(rt2x00dev->bcn);
|
}
|
}
|
mutex_unlock(&intf->beacon_skb_mutex);
|
}
|
|
/*
|
* 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_ASSOC) {
|
rt2x00dev->link.count = 0;
|
|
if (bss_conf->assoc)
|
rt2x00dev->intf_associated++;
|
else
|
rt2x00dev->intf_associated--;
|
|
rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated);
|
}
|
|
/*
|
* When the erp information has changed, we should perform
|
* additional configuration steps. For all other changes we are done.
|
*/
|
if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_ERP_PREAMBLE |
|
BSS_CHANGED_ERP_SLOT | BSS_CHANGED_BASIC_RATES |
|
BSS_CHANGED_BEACON_INT | BSS_CHANGED_HT))
|
rt2x00lib_config_erp(rt2x00dev, intf, bss_conf, changes);
|
}
|
EXPORT_SYMBOL_GPL(rt2x00mac_bss_info_changed);
|
|
int rt2x00mac_conf_tx(struct ieee80211_hw *hw,
|
struct ieee80211_vif *vif, u16 queue_idx,
|
const struct ieee80211_tx_queue_params *params)
|
{
|
struct rt2x00_dev *rt2x00dev = hw->priv;
|
struct data_queue *queue;
|
|
queue = rt2x00queue_get_tx_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 > 0)
|
queue->cw_min = fls(params->cw_min);
|
else
|
queue->cw_min = 5; /* cw_min: 2^5 = 32. */
|
|
if (params->cw_max > 0)
|
queue->cw_max = fls(params->cw_max);
|
else
|
queue->cw_max = 10; /* cw_min: 2^10 = 1024. */
|
|
queue->aifs = params->aifs;
|
queue->txop = params->txop;
|
|
rt2x00_dbg(rt2x00dev,
|
"Configured TX queue %d - CWmin: %d, CWmax: %d, Aifs: %d, TXop: %d\n",
|
queue_idx, queue->cw_min, queue->cw_max, queue->aifs,
|
queue->txop);
|
|
return 0;
|
}
|
EXPORT_SYMBOL_GPL(rt2x00mac_conf_tx);
|
|
void rt2x00mac_rfkill_poll(struct ieee80211_hw *hw)
|
{
|
struct rt2x00_dev *rt2x00dev = hw->priv;
|
bool active = !!rt2x00dev->ops->lib->rfkill_poll(rt2x00dev);
|
|
wiphy_rfkill_set_hw_state(hw->wiphy, !active);
|
}
|
EXPORT_SYMBOL_GPL(rt2x00mac_rfkill_poll);
|
|
void rt2x00mac_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
|
u32 queues, bool drop)
|
{
|
struct rt2x00_dev *rt2x00dev = hw->priv;
|
struct data_queue *queue;
|
|
if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
|
return;
|
|
set_bit(DEVICE_STATE_FLUSHING, &rt2x00dev->flags);
|
|
tx_queue_for_each(rt2x00dev, queue)
|
rt2x00queue_flush_queue(queue, drop);
|
|
clear_bit(DEVICE_STATE_FLUSHING, &rt2x00dev->flags);
|
}
|
EXPORT_SYMBOL_GPL(rt2x00mac_flush);
|
|
int rt2x00mac_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
|
{
|
struct rt2x00_dev *rt2x00dev = hw->priv;
|
struct link_ant *ant = &rt2x00dev->link.ant;
|
struct antenna_setup *def = &rt2x00dev->default_ant;
|
struct antenna_setup setup;
|
|
// The antenna value is not supposed to be 0,
|
// or exceed the maximum number of antenna's.
|
if (!tx_ant || (tx_ant & ~3) || !rx_ant || (rx_ant & ~3))
|
return -EINVAL;
|
|
// When the client tried to configure the antenna to or from
|
// diversity mode, we must reset the default antenna as well
|
// as that controls the diversity switch.
|
if (ant->flags & ANTENNA_TX_DIVERSITY && tx_ant != 3)
|
ant->flags &= ~ANTENNA_TX_DIVERSITY;
|
if (ant->flags & ANTENNA_RX_DIVERSITY && rx_ant != 3)
|
ant->flags &= ~ANTENNA_RX_DIVERSITY;
|
|
// If diversity is being enabled, check if we need hardware
|
// or software diversity. In the latter case, reset the value,
|
// and make sure we update the antenna flags to have the
|
// link tuner pick up the diversity tuning.
|
if (tx_ant == 3 && def->tx == ANTENNA_SW_DIVERSITY) {
|
tx_ant = ANTENNA_SW_DIVERSITY;
|
ant->flags |= ANTENNA_TX_DIVERSITY;
|
}
|
|
if (rx_ant == 3 && def->rx == ANTENNA_SW_DIVERSITY) {
|
rx_ant = ANTENNA_SW_DIVERSITY;
|
ant->flags |= ANTENNA_RX_DIVERSITY;
|
}
|
|
setup.tx = tx_ant;
|
setup.rx = rx_ant;
|
setup.rx_chain_num = 0;
|
setup.tx_chain_num = 0;
|
|
rt2x00lib_config_antenna(rt2x00dev, setup);
|
|
return 0;
|
}
|
EXPORT_SYMBOL_GPL(rt2x00mac_set_antenna);
|
|
int rt2x00mac_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
|
{
|
struct rt2x00_dev *rt2x00dev = hw->priv;
|
struct link_ant *ant = &rt2x00dev->link.ant;
|
struct antenna_setup *active = &rt2x00dev->link.ant.active;
|
|
// When software diversity is active, we must report this to the
|
// client and not the current active antenna state.
|
if (ant->flags & ANTENNA_TX_DIVERSITY)
|
*tx_ant = ANTENNA_HW_DIVERSITY;
|
else
|
*tx_ant = active->tx;
|
|
if (ant->flags & ANTENNA_RX_DIVERSITY)
|
*rx_ant = ANTENNA_HW_DIVERSITY;
|
else
|
*rx_ant = active->rx;
|
|
return 0;
|
}
|
EXPORT_SYMBOL_GPL(rt2x00mac_get_antenna);
|
|
void rt2x00mac_get_ringparam(struct ieee80211_hw *hw,
|
u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
|
{
|
struct rt2x00_dev *rt2x00dev = hw->priv;
|
struct data_queue *queue;
|
|
tx_queue_for_each(rt2x00dev, queue) {
|
*tx += queue->length;
|
*tx_max += queue->limit;
|
}
|
|
*rx = rt2x00dev->rx->length;
|
*rx_max = rt2x00dev->rx->limit;
|
}
|
EXPORT_SYMBOL_GPL(rt2x00mac_get_ringparam);
|
|
bool rt2x00mac_tx_frames_pending(struct ieee80211_hw *hw)
|
{
|
struct rt2x00_dev *rt2x00dev = hw->priv;
|
struct data_queue *queue;
|
|
tx_queue_for_each(rt2x00dev, queue) {
|
if (!rt2x00queue_empty(queue))
|
return true;
|
}
|
|
return false;
|
}
|
EXPORT_SYMBOL_GPL(rt2x00mac_tx_frames_pending);
|
