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6ab10ff873
Using the new mac80211 functionality, this makes iwlwifi handle unicast PS buffering correctly. The device works like this: * when a station goes to sleep, the microcode notices this and marks the station as asleep * when the station is marked asleep, the microcode refuses to transmit to the station and rejects all frames queued to it with the failure status code TX_STATUS_FAIL_DEST_PS (a previous patch handled this correctly) * when we need to send frames to the station _although_ it is asleep, we need to tell the ucode how many, and this is asynchronous with sending so we cannot just send the frames, we need to wait for all other frames to be flushed, and then update the counter before sending out the poll response frames. This is handled partially in the driver and partially in mac80211. In order to do all this correctly, we need to * keep track of how many frames are pending for each associated client station (avoid doing it for other stations to avoid the atomic ops) * tell mac80211 that we driver-block the PS status while there are still frames pending on the queues, and once they are all rejected (due to the dest sta being in PS) unblock mac80211 Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
72 lines
3.1 KiB
C
72 lines
3.1 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
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*
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* Portions of this file are derived from the ipw3945 project, as well
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* as portions of the ieee80211 subsystem header files.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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*****************************************************************************/
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#ifndef __iwl_sta_h__
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#define __iwl_sta_h__
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#define HW_KEY_DYNAMIC 0
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#define HW_KEY_DEFAULT 1
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/**
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* iwl_find_station - Find station id for a given BSSID
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* @bssid: MAC address of station ID to find
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*/
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u8 iwl_find_station(struct iwl_priv *priv, const u8 *bssid);
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int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty);
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int iwl_remove_default_wep_key(struct iwl_priv *priv,
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struct ieee80211_key_conf *key);
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int iwl_set_default_wep_key(struct iwl_priv *priv,
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struct ieee80211_key_conf *key);
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int iwl_set_dynamic_key(struct iwl_priv *priv,
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struct ieee80211_key_conf *key, u8 sta_id);
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int iwl_remove_dynamic_key(struct iwl_priv *priv,
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struct ieee80211_key_conf *key, u8 sta_id);
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void iwl_update_tkip_key(struct iwl_priv *priv,
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struct ieee80211_key_conf *keyconf,
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const u8 *addr, u32 iv32, u16 *phase1key);
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int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, bool is_ap);
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void iwl_add_bcast_station(struct iwl_priv *priv);
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int iwl_remove_station(struct iwl_priv *priv, const u8 *addr, bool is_ap);
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void iwl_clear_stations_table(struct iwl_priv *priv);
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int iwl_get_free_ucode_key_index(struct iwl_priv *priv);
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int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr);
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int iwl_get_ra_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr);
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int iwl_send_add_sta(struct iwl_priv *priv,
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struct iwl_addsta_cmd *sta, u8 flags);
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u8 iwl_add_station(struct iwl_priv *priv, const u8 *addr, bool is_ap, u8 flags,
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struct ieee80211_sta_ht_cap *ht_info);
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void iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid);
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int iwl_sta_rx_agg_start(struct iwl_priv *priv,
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const u8 *addr, int tid, u16 ssn);
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int iwl_sta_rx_agg_stop(struct iwl_priv *priv, const u8 *addr, int tid);
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void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id);
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void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt);
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#endif /* __iwl_sta_h__ */
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