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mac80211: add api to start ba session timer expired flow

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Some drivers handle rx buffer reordering internally (and by extension
handle also the rx ba session timer internally), but do not ofload the
addba/delba negotiation.
Add an api for these drivers to properly tear-down the ba session,
including sending a delba.

Signed-off-by: Naftali Goldstein <naftali.goldstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Naftali Goldstein 2017-07-11 10:07:25 +03:00 committed by Luca Coelho
parent a600852a9d
commit 04c2cf3436
2 changed files with 36 additions and 1 deletions
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15
include/net/mac80211.h
View File

@ -5499,6 +5499,21 @@ static inline void ieee80211_stop_rx_ba_session_offl(struct ieee80211_vif *vif,
ieee80211_manage_rx_ba_offl(vif, addr, tid + IEEE80211_NUM_TIDS);
}
/**
* ieee80211_rx_ba_timer_expired - stop a Rx BA session due to timeout
*
* Some device drivers do not offload AddBa/DelBa negotiation, but handle rx
* buffer reording internally, and therefore also handle the session timer.
*
* Trigger the timeout flow, which sends a DelBa.
*
* @vif: &struct ieee80211_vif pointer from the add_interface callback
* @addr: station mac address
* @tid: the rx tid
*/
void ieee80211_rx_ba_timer_expired(struct ieee80211_vif *vif,
const u8 *addr, unsigned int tid);
/* Rate control API */
/**

22
net/mac80211/agg-rx.c
View File

@ -7,7 +7,7 @@
* Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
* Copyright 2007, Michael Wu <flamingice@sourmilk.net>
* Copyright 2007-2010, Intel Corporation
* Copyright(c) 2015 Intel Deutschland GmbH
* Copyright(c) 2015-2017 Intel Deutschland GmbH
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@ -466,3 +466,23 @@ void ieee80211_manage_rx_ba_offl(struct ieee80211_vif *vif,
rcu_read_unlock();
}
EXPORT_SYMBOL(ieee80211_manage_rx_ba_offl);
void ieee80211_rx_ba_timer_expired(struct ieee80211_vif *vif,
const u8 *addr, unsigned int tid)
{
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
struct ieee80211_local *local = sdata->local;
struct sta_info *sta;
rcu_read_lock();
sta = sta_info_get_bss(sdata, addr);
if (!sta)
goto unlock;
set_bit(tid, sta->ampdu_mlme.tid_rx_timer_expired);
ieee80211_queue_work(&local->hw, &sta->ampdu_mlme.work);
unlock:
rcu_read_unlock();
}
EXPORT_SYMBOL(ieee80211_rx_ba_timer_expired);