diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
---|---|---|
committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
commit | 03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch) | |
tree | fa581f6dc1c0596391690d1f67eceef3af8246dc /drivers/net/wireless/rt2x00/rt2x00mac.c | |
parent | d4e493caf788ef44982e131ff9c786546904d934 (diff) |
Linux-libre 4.5-gnu
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00mac.c')
-rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00mac.c | 846 |
1 files changed, 0 insertions, 846 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c deleted file mode 100644 index 3c26ee65a..000000000 --- a/drivers/net/wireless/rt2x00/rt2x00mac.c +++ /dev/null @@ -1,846 +0,0 @@ -/* - Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com> - <http://rt2x00.serialmonkey.com> - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, see <http://www.gnu.org/licenses/>. - */ - -/* - Module: rt2x00mac - Abstract: rt2x00 generic mac80211 routines. - */ - -#include <linux/kernel.h> -#include <linux/module.h> - -#include "rt2x00.h" -#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; -} - -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) - goto exit_fail; - - if (rt2x00mac_tx_rts_cts(rt2x00dev, queue, skb)) - goto exit_fail; - } - - if (unlikely(rt2x00queue_write_tx_frame(queue, skb, control->sta, false))) - goto exit_fail; - - /* - * Pausing queue has to be serialized with rt2x00lib_txdone(). Note - * we should not use spin_lock_bh variant as bottom halve was already - * disabled before ieee80211_xmit() call. - */ - spin_lock(&queue->tx_lock); - if (rt2x00queue_threshold(queue)) - rt2x00queue_pause_queue(queue); - spin_unlock(&queue->tx_lock); - - return; - - exit_fail: - spin_lock(&queue->tx_lock); - rt2x00queue_pause_queue(queue); - spin_unlock(&queue->tx_lock); - exit_free_skb: - ieee80211_free_txskb(hw, skb); -} -EXPORT_SYMBOL_GPL(rt2x00mac_tx); - -int rt2x00mac_start(struct ieee80211_hw *hw) -{ - struct rt2x00_dev *rt2x00dev = hw->priv; - - if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) - return 0; - - return rt2x00lib_start(rt2x00dev); -} -EXPORT_SYMBOL_GPL(rt2x00mac_start); - -void rt2x00mac_stop(struct ieee80211_hw *hw) -{ - struct rt2x00_dev *rt2x00dev = hw->priv; - - if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) - return; - - rt2x00lib_stop(rt2x00dev); -} -EXPORT_SYMBOL_GPL(rt2x00mac_stop); - -int rt2x00mac_add_interface(struct ieee80211_hw *hw, - struct ieee80211_vif *vif) -{ - struct rt2x00_dev *rt2x00dev = hw->priv; - struct rt2x00_intf *intf = vif_to_intf(vif); - struct data_queue *queue = rt2x00dev->bcn; - struct queue_entry *entry = NULL; - unsigned int i; - - /* - * Don't allow interfaces to be added - * the device has disappeared. - */ - if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || - !test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) - return -ENODEV; - - /* - * 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 (vif->type == NL80211_IFTYPE_AP) - rt2x00dev->intf_ap_count++; - else - rt2x00dev->intf_sta_count++; - - 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. - */ - rt2x00lib_config_intf(rt2x00dev, intf, vif->type, - vif->addr, 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; -} -EXPORT_SYMBOL_GPL(rt2x00mac_add_interface); - -void rt2x00mac_remove_interface(struct ieee80211_hw *hw, - struct ieee80211_vif *vif) -{ - struct rt2x00_dev *rt2x00dev = hw->priv; - struct rt2x00_intf *intf = vif_to_intf(vif); - - /* - * Don't allow interfaces to be remove while - * either the device has disappeared or when - * no interface is present. - */ - if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || - (vif->type == NL80211_IFTYPE_AP && !rt2x00dev->intf_ap_count) || - (vif->type != NL80211_IFTYPE_AP && !rt2x00dev->intf_sta_count)) - return; - - if (vif->type == NL80211_IFTYPE_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_intf(rt2x00dev, intf, - NL80211_IFTYPE_UNSPECIFIED, NULL, NULL); -} -EXPORT_SYMBOL_GPL(rt2x00mac_remove_interface); - -int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed) -{ - struct rt2x00_dev *rt2x00dev = hw->priv; - struct ieee80211_conf *conf = &hw->conf; - - /* - * 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 0; - - /* - * 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(). - */ - rt2x00queue_stop_queue(rt2x00dev->rx); - - /* - * When we've just turned on the radio, we want to reprogram - * everything to ensure a consistent state - */ - rt2x00lib_config(rt2x00dev, conf, changed); - - /* - * 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); - - /* Turn RX back on */ - rt2x00queue_start_queue(rt2x00dev->rx); - - return 0; -} -EXPORT_SYMBOL_GPL(rt2x00mac_config); - -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; - } - - /* - * Check if there is any work left for us. - */ - if (rt2x00dev->packet_filter == *total_flags) - return; - 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; - - if (!rt2x00_has_cap_hw_crypto(rt2x00dev)) - 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 */ - -int rt2x00mac_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - struct ieee80211_sta *sta) -{ - struct rt2x00_dev *rt2x00dev = hw->priv; - - return rt2x00dev->ops->lib->sta_add(rt2x00dev, vif, sta); -} -EXPORT_SYMBOL_GPL(rt2x00mac_sta_add); - -int rt2x00mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - struct ieee80211_sta *sta) -{ - struct rt2x00_dev *rt2x00dev = hw->priv; - struct rt2x00_sta *sta_priv = sta_to_rt2x00_sta(sta); - - return rt2x00dev->ops->lib->sta_remove(rt2x00dev, sta_priv->wcid); -} -EXPORT_SYMBOL_GPL(rt2x00mac_sta_remove); - -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); - - clear_bit(CONFIG_QOS_DISABLED, &rt2x00dev->flags); - } - - /* - * Check for access point which do not support 802.11e . We have to - * generate data frames sequence number in S/W for such AP, because - * of H/W bug. - */ - if (changes & BSS_CHANGED_QOS && !bss_conf->qos) - set_bit(CONFIG_QOS_DISABLED, &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_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; - - tx_queue_for_each(rt2x00dev, queue) - rt2x00queue_flush_queue(queue, drop); -} -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); |