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wifi: iwlwifi: mvm: remove IWL_MVM_STATUS_NEED_FLUSH_P2P

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This is set when a P2P ROC ends, and uses as an indication inside
iwl_mvm_roc_done_wk that the resources used for this ROC (sta/link)
needs to be flushed/deactivated (respectively).
But we also have IWL_MVM_STATUS_ROC_RUNNING, which is set whenever
P2P ROC starts, and is not even used in iwl_mvm_roc_done_wk.
Use IWL_MVM_STATUS_ROC_RUNNING as an indicator, and remove the redundant
bit.
While at it, add a call to synchronize_net also for the
AUX ROC case, which is missing in the existing code.

Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240205211151.0494f75de311.Ic4aacacf7581a5c9046c4f1df87cbb67470853e7@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Miri Korenblit 2024-02-05 21:21:06 +02:00 committed by Johannes Berg
parent cd882e2fb2
commit 35c1bbd93c
2 changed files with 38 additions and 55 deletions
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4
drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
View File

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/*
* Copyright (C) 2012-2014, 2018-2023 Intel Corporation
* Copyright (C) 2012-2014, 2018-2024 Intel Corporation
* Copyright (C) 2013-2015 Intel Mobile Communications GmbH
* Copyright (C) 2016-2017 Intel Deutschland GmbH
*/
@ -1221,7 +1221,6 @@ struct iwl_mvm {
* @IWL_MVM_STATUS_IN_HW_RESTART: HW restart is active
* @IWL_MVM_STATUS_ROC_AUX_RUNNING: AUX remain-on-channel is running
* @IWL_MVM_STATUS_FIRMWARE_RUNNING: firmware is running
* @IWL_MVM_STATUS_NEED_FLUSH_P2P: need to flush P2P bcast STA
* @IWL_MVM_STATUS_IN_D3: in D3 (or at least about to go into it)
* @IWL_MVM_STATUS_SUPPRESS_ERROR_LOG_ONCE: suppress one error log
* if this is set, when intentionally triggered
@ -1236,7 +1235,6 @@ enum iwl_mvm_status {
IWL_MVM_STATUS_IN_HW_RESTART,
IWL_MVM_STATUS_ROC_AUX_RUNNING,
IWL_MVM_STATUS_FIRMWARE_RUNNING,
IWL_MVM_STATUS_NEED_FLUSH_P2P,
IWL_MVM_STATUS_IN_D3,
IWL_MVM_STATUS_SUPPRESS_ERROR_LOG_ONCE,
IWL_MVM_STATUS_STARTING,

89
drivers/net/wireless/intel/iwlwifi/mvm/time-event.c
View File

@ -45,32 +45,24 @@ void iwl_mvm_te_clear_data(struct iwl_mvm *mvm,
te_data->link_id = -1;
}
void iwl_mvm_roc_done_wk(struct work_struct *wk)
static void iwl_mvm_cleanup_roc(struct iwl_mvm *mvm)
{
struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, roc_done_wk);
/*
* Clear the ROC_RUNNING status bit.
* This will cause the TX path to drop offchannel transmissions.
* That would also be done by mac80211, but it is racy, in particular
* in the case that the time event actually completed in the firmware
* (which is handled in iwl_mvm_te_handle_notif).
*/
clear_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status);
synchronize_net();
/*
* Flush the offchannel queue -- this is called when the time
* in the case that the time event actually completed in the firmware.
*
* Also flush the offchannel queue -- this is called when the time
* event finishes or is canceled, so that frames queued for it
* won't get stuck on the queue and be transmitted in the next
* time event.
*/
mutex_lock(&mvm->mutex);
if (test_and_clear_bit(IWL_MVM_STATUS_NEED_FLUSH_P2P, &mvm->status)) {
if (test_and_clear_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status)) {
struct iwl_mvm_vif *mvmvif;
synchronize_net();
/*
* NB: access to this pointer would be racy, but the flush bit
* can only be set when we had a P2P-Device VIF, and we have a
@ -105,21 +97,16 @@ void iwl_mvm_roc_done_wk(struct work_struct *wk)
}
}
/*
* Clear the ROC_AUX_RUNNING status bit.
* This will cause the TX path to drop offchannel transmissions.
* That would also be done by mac80211, but it is racy, in particular
* in the case that the time event actually completed in the firmware
* (which is handled in iwl_mvm_te_handle_notif).
*/
/* Do the same for AUX ROC */
if (test_and_clear_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) {
/* do the same in case of hot spot 2.0 */
synchronize_net();
iwl_mvm_flush_sta(mvm, mvm->aux_sta.sta_id,
mvm->aux_sta.tfd_queue_msk);
if (mvm->mld_api_is_used) {
iwl_mvm_mld_rm_aux_sta(mvm);
goto out_unlock;
return;
}
/* In newer version of this command an aux station is added only
@ -128,8 +115,14 @@ void iwl_mvm_roc_done_wk(struct work_struct *wk)
if (iwl_mvm_has_new_station_api(mvm->fw))
iwl_mvm_rm_aux_sta(mvm);
}
}
out_unlock:
void iwl_mvm_roc_done_wk(struct work_struct *wk)
{
struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, roc_done_wk);
mutex_lock(&mvm->mutex);
iwl_mvm_cleanup_roc(mvm);
mutex_unlock(&mvm->mutex);
}
@ -294,18 +287,6 @@ static void iwl_mvm_te_check_trigger(struct iwl_mvm *mvm,
}
}
static void iwl_mvm_p2p_roc_finished(struct iwl_mvm *mvm)
{
/*
* If the IWL_MVM_STATUS_NEED_FLUSH_P2P is already set, then the
* roc_done_wk is already scheduled or running, so don't schedule it
* again to avoid a race where the roc_done_wk clears this bit after
* it is set here, affecting the next run of the roc_done_wk.
*/
if (!test_and_set_bit(IWL_MVM_STATUS_NEED_FLUSH_P2P, &mvm->status))
iwl_mvm_roc_finished(mvm);
}
/*
* Handles a FW notification for an event that is known to the driver.
*
@ -357,7 +338,7 @@ static void iwl_mvm_te_handle_notif(struct iwl_mvm *mvm,
switch (te_data->vif->type) {
case NL80211_IFTYPE_P2P_DEVICE:
ieee80211_remain_on_channel_expired(mvm->hw);
iwl_mvm_p2p_roc_finished(mvm);
iwl_mvm_roc_finished(mvm);
break;
case NL80211_IFTYPE_STATION:
/*
@ -782,7 +763,7 @@ static bool __iwl_mvm_remove_time_event(struct iwl_mvm *mvm,
iwl_mvm_cancel_session_protection(mvm, vif, id,
link_id);
if (iftype == NL80211_IFTYPE_P2P_DEVICE) {
iwl_mvm_p2p_roc_finished(mvm);
iwl_mvm_roc_finished(mvm);
}
}
return false;
@ -972,7 +953,7 @@ void iwl_mvm_rx_session_protect_notif(struct iwl_mvm *mvm,
/* End TE, notify mac80211 */
mvmvif->time_event_data.id = SESSION_PROTECT_CONF_MAX_ID;
mvmvif->time_event_data.link_id = -1;
iwl_mvm_p2p_roc_finished(mvm);
iwl_mvm_roc_finished(mvm);
ieee80211_remain_on_channel_expired(mvm->hw);
} else if (le32_to_cpu(notif->start)) {
if (WARN_ON(mvmvif->time_event_data.id !=
@ -1244,17 +1225,13 @@ void iwl_mvm_stop_roc(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) {
mvmvif = iwl_mvm_vif_from_mac80211(vif);
if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
iwl_mvm_cancel_session_protection(mvm, vif,
mvmvif->time_event_data.id,
mvmvif->time_event_data.link_id);
iwl_mvm_p2p_roc_finished(mvm);
} else {
else
iwl_mvm_roc_station_remove(mvm, mvmvif);
iwl_mvm_roc_finished(mvm);
}
return;
goto cleanup_roc;
}
te_data = iwl_mvm_get_roc_te(mvm);
@ -1265,13 +1242,21 @@ void iwl_mvm_stop_roc(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
mvmvif = iwl_mvm_vif_from_mac80211(te_data->vif);
if (te_data->vif->type == NL80211_IFTYPE_P2P_DEVICE) {
if (te_data->vif->type == NL80211_IFTYPE_P2P_DEVICE)
iwl_mvm_remove_time_event(mvm, mvmvif, te_data);
iwl_mvm_p2p_roc_finished(mvm);
} else {
else
iwl_mvm_remove_aux_roc_te(mvm, mvmvif, te_data);
iwl_mvm_roc_finished(mvm);
}
cleanup_roc:
/*
* In case we get here before the ROC event started,
* (so the status bit isn't set) set it here so iwl_mvm_cleanup_roc will
* cleanup things properly
*/
set_bit(vif->type == NL80211_IFTYPE_P2P_DEVICE ?
IWL_MVM_STATUS_ROC_RUNNING : IWL_MVM_STATUS_ROC_AUX_RUNNING,
&mvm->status);
iwl_mvm_cleanup_roc(mvm);
}
void iwl_mvm_remove_csa_period(struct iwl_mvm *mvm,