diff options
Diffstat (limited to 'package/rt2x00/src/rt2x00mac.c')
| -rw-r--r-- | package/rt2x00/src/rt2x00mac.c | 446 |
1 files changed, 0 insertions, 446 deletions
diff --git a/package/rt2x00/src/rt2x00mac.c b/package/rt2x00/src/rt2x00mac.c deleted file mode 100644 index 85ea8a8..0000000 --- a/package/rt2x00/src/rt2x00mac.c +++ /dev/null @@ -1,446 +0,0 @@ -/* - Copyright (C) 2004 - 2007 rt2x00 SourceForge Project - <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, write to the - Free Software Foundation, Inc., - 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -/* - Module: rt2x00mac - Abstract: rt2x00 generic mac80211 routines. - */ - -/* - * Set enviroment defines for rt2x00.h - */ -#define DRV_NAME "rt2x00lib" - -#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_ring *ring, - struct sk_buff *frag_skb, - struct ieee80211_tx_control *control) -{ - struct sk_buff *skb; - int size; - - if (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) - size = sizeof(struct ieee80211_cts); - else - size = sizeof(struct ieee80211_rts); - - skb = dev_alloc_skb(size + rt2x00dev->hw->extra_tx_headroom); - if (!skb) { - WARNING(rt2x00dev, "Failed to create RTS/CTS frame.\n"); - return NETDEV_TX_BUSY; - } - - skb_reserve(skb, rt2x00dev->hw->extra_tx_headroom); - skb_put(skb, size); - - if (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) - ieee80211_ctstoself_get(rt2x00dev->hw, rt2x00dev->interface.id, - frag_skb->data, frag_skb->len, control, - (struct ieee80211_cts *)(skb->data)); - else - ieee80211_rts_get(rt2x00dev->hw, rt2x00dev->interface.id, - frag_skb->data, frag_skb->len, control, - (struct ieee80211_rts *)(skb->data)); - - if (rt2x00dev->ops->lib->write_tx_data(rt2x00dev, ring, skb, control)) { - WARNING(rt2x00dev, "Failed to send RTS/CTS frame.\n"); - return NETDEV_TX_BUSY; - } - - return NETDEV_TX_OK; -} - -int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb, - struct ieee80211_tx_control *control) -{ - struct rt2x00_dev *rt2x00dev = hw->priv; - struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr *)skb->data; - struct data_ring *ring; - u16 frame_control; - - /* - * 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_PRESENT, &rt2x00dev->flags)) { - ieee80211_stop_queues(hw); - return 0; - } - - /* - * Determine which ring to put packet on. - */ - ring = rt2x00lib_get_ring(rt2x00dev, control->queue); - if (unlikely(!ring)) { - ERROR(rt2x00dev, - "Attempt to send packet over invalid queue %d.\n" - "Please file bug report to %s.\n", - control->queue, DRV_PROJECT); - dev_kfree_skb_any(skb); - return NETDEV_TX_OK; - } - - /* - * If CTS/RTS is required. and this frame is not CTS or RTS, - * 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. - */ - 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) - return NETDEV_TX_BUSY; - - if (rt2x00mac_tx_rts_cts(rt2x00dev, ring, skb, control)) - return NETDEV_TX_BUSY; - } - - if (rt2x00dev->ops->lib->write_tx_data(rt2x00dev, ring, skb, control)) - return NETDEV_TX_BUSY; - - if (rt2x00dev->ops->lib->kick_tx_queue) - rt2x00dev->ops->lib->kick_tx_queue(rt2x00dev, control->queue); - - return NETDEV_TX_OK; -} -EXPORT_SYMBOL_GPL(rt2x00mac_tx); - -int rt2x00mac_start(struct ieee80211_hw *hw) -{ - struct rt2x00_dev *rt2x00dev = hw->priv; - int status; - - if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags) || - test_bit(DEVICE_STARTED, &rt2x00dev->flags)) - return 0; - - /* - * If this is the first interface which is added, - * we should load the firmware now. - */ - if (test_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags)) { - status = rt2x00lib_load_firmware(rt2x00dev); - if (status) - return status; - } - - /* - * Initialize the device. - */ - status = rt2x00lib_initialize(rt2x00dev); - if (status) - return status; - - /* - * Enable radio. - */ - status = rt2x00lib_enable_radio(rt2x00dev); - if (status) { - rt2x00lib_uninitialize(rt2x00dev); - return status; - } - - __set_bit(DEVICE_STARTED, &rt2x00dev->flags); - - return 0; -} -EXPORT_SYMBOL_GPL(rt2x00mac_start); - -void rt2x00mac_stop(struct ieee80211_hw *hw) -{ - struct rt2x00_dev *rt2x00dev = hw->priv; - - if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags)) - return; - - /* - * Perhaps we can add something smarter here, - * but for now just disabling the radio should do. - */ - rt2x00lib_disable_radio(rt2x00dev); - - __clear_bit(DEVICE_STARTED, &rt2x00dev->flags); -} -EXPORT_SYMBOL_GPL(rt2x00mac_stop); - -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; - - /* 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; - } - - /* - * Don't allow interfaces to be added while - * either the device has disappeared or when - * another interface is already present. - */ - if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags) || - is_interface_present(intf)) - return -ENOBUFS; - - intf->id = conf->if_id; - intf->type = conf->type; - if (conf->type == IEEE80211_IF_TYPE_AP) - memcpy(&intf->bssid, conf->mac_addr, ETH_ALEN); - memcpy(&intf->mac, conf->mac_addr, ETH_ALEN); - - /* - * The MAC adddress must be configured after the device - * has been initialized. Otherwise the device can reset - * the MAC registers. - */ - rt2x00lib_config_mac_addr(rt2x00dev, intf->mac); - rt2x00lib_config_type(rt2x00dev, conf->type); - - return 0; -} -EXPORT_SYMBOL_GPL(rt2x00mac_add_interface); - -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; - - /* - * Don't allow interfaces to be remove while - * either the device has disappeared or when - * no interface is present. - */ - if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags) || - !is_interface_present(intf)) - return; - - intf->id = 0; - intf->type = INVALID_INTERFACE; - memset(&intf->bssid, 0x00, ETH_ALEN); - memset(&intf->mac, 0x00, ETH_ALEN); - - /* - * 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); -} -EXPORT_SYMBOL_GPL(rt2x00mac_remove_interface); - -int rt2x00mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf) -{ - struct rt2x00_dev *rt2x00dev = hw->priv; - - /* - * Mac80211 might be calling this function while we are trying - * to remove the device or perhaps suspending it. - */ - if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags)) - return 0; - - /* - * Check if we need to disable the radio, - * if this is not the case, at least the RX must be disabled. - */ - if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) { - if (!conf->radio_enabled) - rt2x00lib_disable_radio(rt2x00dev); - else - rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); - } - - rt2x00lib_config(rt2x00dev, conf, 0); - - /* - * Reenable RX only if the radio should be on. - */ - if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) - rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON); - else if (conf->radio_enabled) - return rt2x00lib_enable_radio(rt2x00dev); - - return 0; -} -EXPORT_SYMBOL_GPL(rt2x00mac_config); - -int rt2x00mac_config_interface(struct ieee80211_hw *hw, int if_id, - struct ieee80211_if_conf *conf) -{ - struct rt2x00_dev *rt2x00dev = hw->priv; - struct interface *intf = &rt2x00dev->interface; - int status; - - /* - * Mac80211 might be calling this function while we are trying - * to remove the device or perhaps suspending it. - */ - 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; - - /* - * If the interface does not work in master mode, - * then the bssid value in the interface structure - * should now be set. - */ - if (conf->type != IEEE80211_IF_TYPE_AP) - memcpy(&intf->bssid, conf->bssid, ETH_ALEN); - rt2x00lib_config_bssid(rt2x00dev, intf->bssid); - - /* - * We only need to initialize the beacon when master mode is enabled. - */ - if (conf->type != IEEE80211_IF_TYPE_AP || !conf->beacon) - return 0; - - status = rt2x00dev->ops->hw->beacon_update(rt2x00dev->hw, - conf->beacon, - conf->beacon_control); - if (status) - dev_kfree_skb(conf->beacon); - - return status; -} -EXPORT_SYMBOL_GPL(rt2x00mac_config_interface); - -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); - -int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw, - struct ieee80211_tx_queue_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)); - - return 0; -} -EXPORT_SYMBOL_GPL(rt2x00mac_get_tx_stats); - -void rt2x00mac_erp_ie_changed(struct ieee80211_hw *hw, u8 changes, - int cts_protection, int preamble) -{ - struct rt2x00_dev *rt2x00dev = hw->priv; - int short_preamble; - int ack_timeout; - int ack_consume_time; - int difs; - - /* - * We only support changing preamble mode. - */ - if (!(changes & IEEE80211_ERP_CHANGE_PREAMBLE)) - return; - - short_preamble = !preamble; - preamble = !!(preamble) ? PREAMBLE : SHORT_PREAMBLE; - - 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 (short_preamble) - __set_bit(CONFIG_SHORT_PREAMBLE, &rt2x00dev->flags); - else - __clear_bit(CONFIG_SHORT_PREAMBLE, &rt2x00dev->flags); - - rt2x00dev->ops->lib->config_preamble(rt2x00dev, short_preamble, - ack_timeout, ack_consume_time); -} -EXPORT_SYMBOL_GPL(rt2x00mac_erp_ie_changed); - -int rt2x00mac_conf_tx(struct ieee80211_hw *hw, int queue, - const struct ieee80211_tx_queue_params *params) -{ - struct rt2x00_dev *rt2x00dev = hw->priv; - struct data_ring *ring; - - ring = rt2x00lib_get_ring(rt2x00dev, queue); - if (unlikely(!ring)) - 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); - else - ring->tx_params.cw_min = 5; /* cw_min: 2^5 = 32. */ - - if (params->cw_max) - ring->tx_params.cw_max = fls(params->cw_max); - else - ring->tx_params.cw_max = 10; /* cw_min: 2^10 = 1024. */ - - if (params->aifs) - ring->tx_params.aifs = params->aifs; - else - ring->tx_params.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); - - return 0; -} -EXPORT_SYMBOL_GPL(rt2x00mac_conf_tx); |