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mac80211: introduce channel switch disconnect function 

Introduce a disconnect function that can be used when a
channel switch error occurs. The channel switch can request to
block the tx, and so, we need to make sure we do not send a deauth
frame in this case.

Signed-off-by: Nathan Errera <nathan.errera@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211129152938.cd2a615a0702.I9edb14785586344af17644b610ab5be109dcef00@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Nathan Errera 2021-11-29 15:32:38 +02:00 committed by Johannes Berg
parent 28f350a67d
commit 6d50176428
2 changed files with 25 additions and 1 deletions
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12
include/net/mac80211.h
View File

@ -6075,6 +6075,18 @@ void ieee80211_radar_detected(struct ieee80211_hw *hw);
*/
void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success);
/**
* ieee80211_channel_switch_disconnect - disconnect due to channel switch error
* @vif &struct ieee80211_vif pointer from the add_interface callback.
* @block_tx: if %true, do not send deauth frame.
*
* Instruct mac80211 to disconnect due to a channel switch error. The channel
* switch can request to block the tx and so, we need to make sure we do not send
* a deauth frame in this case.
*/
void ieee80211_channel_switch_disconnect(struct ieee80211_vif *vif,
bool block_tx);
/**
* ieee80211_request_smps - request SM PS transition
* @vif: &struct ieee80211_vif pointer from the add_interface callback.

14
net/mac80211/cfg.c
View File

@ -5,7 +5,7 @@
* Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
* Copyright 2013-2015 Intel Mobile Communications GmbH
* Copyright (C) 2015-2017 Intel Deutschland GmbH
* Copyright (C) 2018-2020 Intel Corporation
* Copyright (C) 2018-2021 Intel Corporation
*/
#include <linux/ieee80211.h>
@ -3198,6 +3198,18 @@ void ieee80211_csa_finish(struct ieee80211_vif *vif)
}
EXPORT_SYMBOL(ieee80211_csa_finish);
void ieee80211_channel_switch_disconnect(struct ieee80211_vif *vif, bool block_tx)
{
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_local *local = sdata->local;
sdata->csa_block_tx = block_tx;
sdata_info(sdata, "channel switch failed, disconnecting\n");
ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work);
}
EXPORT_SYMBOL(ieee80211_channel_switch_disconnect);
static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
u32 *changed)
{