diff options
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00mac.c')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00mac.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c index f519d7396848..4a6a0bd01ff1 100644 --- a/drivers/net/wireless/rt2x00/rt2x00mac.c +++ b/drivers/net/wireless/rt2x00/rt2x00mac.c @@ -365,6 +365,40 @@ int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw, } 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) { |