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wifi: iwlwifi: mvm: introduce esr_disable_reason

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This will maintain a bitmap of reasons for which we want to avoid
enabling EMLSR.
For now, we have a single reason: BT coexistence, but we will add soon
more reasons. Make it a bitmap to make it easier to manage.

Since we'll impact the parameters that impact the enablement /
disablement of EMLSR from several places, introduce a generic function
that takes into account the current state and execute the decision that
must be taken.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240416134215.94c3590c6f27.I6a190da5025d0523ef483ffac0c64e26675041e6@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Emmanuel Grumbach 2024-04-16 13:53:56 +03:00 committed by Johannes Berg
parent 332ff43251
commit 76f9864d7a
3 changed files with 51 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/net/wireless/intel/iwlwifi/mvm/coex.c
View File

@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* Copyright (C) 2013-2014, 2018-2020, 2022-2023 Intel Corporation
* Copyright (C) 2013-2014, 2018-2020, 2022-2024 Intel Corporation
* Copyright (C) 2013-2015 Intel Mobile Communications GmbH
*/
#include <linux/ieee80211.h>
@ -257,7 +257,6 @@ static void iwl_mvm_bt_coex_enable_esr(struct iwl_mvm *mvm,
struct ieee80211_vif *vif, bool enable)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int link_id;
lockdep_assert_held(&mvm->mutex);
@ -265,30 +264,15 @@ static void iwl_mvm_bt_coex_enable_esr(struct iwl_mvm *mvm,
return;
/* Done already */
if (mvmvif->bt_coex_esr_disabled == !enable)
if ((mvmvif->esr_disable_reason & IWL_MVM_ESR_DISABLE_COEX) == !enable)
return;
mvmvif->bt_coex_esr_disabled = !enable;
if (enable)
mvmvif->esr_disable_reason &= ~IWL_MVM_ESR_DISABLE_COEX;
else
mvmvif->esr_disable_reason |= IWL_MVM_ESR_DISABLE_COEX;
/* Nothing to do */
if (mvmvif->esr_active == enable)
return;
if (enable) {
/* Try to re-enable eSR*/
iwl_mvm_mld_select_links(mvm, vif, false);
return;
}
/*
* Find the primary link, as we want to switch to it and drop the
* secondary one.
*/
link_id = iwl_mvm_mld_get_primary_link(mvm, vif, vif->active_links);
WARN_ON(link_id < 0);
ieee80211_set_active_links_async(vif,
vif->active_links & BIT(link_id));
iwl_mvm_recalc_esr(mvm, vif);
}
/*
@ -336,7 +320,7 @@ iwl_mvm_bt_coex_calculate_esr_mode(struct iwl_mvm *mvm,
if (!link_rssi)
wifi_loss_rate = mvm->last_bt_notif.wifi_loss_mid_high_rssi;
else if (!mvmvif->bt_coex_esr_disabled)
else if (!(mvmvif->esr_disable_reason & IWL_MVM_ESR_DISABLE_COEX))
/* RSSI needs to get really low to disable eSR... */
wifi_loss_rate =
link_rssi <= -IWL_MVM_BT_COEX_DISABLE_ESR_THRESH ?

29
drivers/net/wireless/intel/iwlwifi/mvm/mld-mac80211.c
View File

@ -1258,6 +1258,33 @@ int iwl_mvm_mld_get_primary_link(struct iwl_mvm *mvm,
return data[1].link_id;
}
void iwl_mvm_recalc_esr(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
bool enable = !mvmvif->esr_disable_reason;
int link_id;
/* Nothing to do */
if (mvmvif->esr_active == enable)
return;
if (enable) {
/* Try to re-enable eSR */
iwl_mvm_mld_select_links(mvm, vif, false);
return;
}
/*
* Find the primary link, as we want to switch to it and drop the
* secondary one.
*/
link_id = iwl_mvm_mld_get_primary_link(mvm, vif, vif->active_links);
WARN_ON(link_id < 0);
ieee80211_set_active_links_async(vif,
vif->active_links & BIT(link_id));
}
/*
* This function receives a bitmap of usable links and check if we can enter
* eSR on those links.
@ -1300,7 +1327,7 @@ static bool iwl_mvm_can_enter_esr(struct iwl_mvm *mvm,
primary_link);
// Mark eSR as disabled for the next time
if (!ret)
mvmvif->bt_coex_esr_disabled = true;
mvmvif->esr_disable_reason |= IWL_MVM_ESR_DISABLE_COEX;
break;
}

18
drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
View File

@ -345,6 +345,14 @@ struct iwl_mvm_vif_link_info {
struct iwl_mvm_link_bf_data bf_data;
};
/**
* enum iwl_mvm_esr_disable_reason - reasons for which we can't enable EMLSR
* @IWL_MVM_ESR_DISABLE_COEX: COEX is preventing the enablement of EMLSR
*/
enum iwl_mvm_esr_disable_reason {
IWL_MVM_ESR_DISABLE_COEX = BIT(0),
};
/**
* struct iwl_mvm_vif - data per Virtual Interface, it is a MAC context
* @mvm: pointer back to the mvm struct
@ -360,7 +368,6 @@ struct iwl_mvm_vif_link_info {
* @pm_enabled - indicate if MAC power management is allowed
* @monitor_active: indicates that monitor context is configured, and that the
* interface should get quota etc.
* @bt_coex_esr_disabled: indicates if esr is disabled due to bt coex
* @low_latency: bit flags for low latency
* see enum &iwl_mvm_low_latency_cause for causes.
* @low_latency_actual: boolean, indicates low latency is set,
@ -379,6 +386,7 @@ struct iwl_mvm_vif_link_info {
* @deflink: default link data for use in non-MLO
* @link: link data for each link in MLO
* @esr_active: indicates eSR mode is active
* @esr_disable_reason: a bitmap of enum iwl_mvm_esr_disable_reason
* @pm_enabled: indicates powersave is enabled
*/
struct iwl_mvm_vif {
@ -393,7 +401,6 @@ struct iwl_mvm_vif {
bool pm_enabled;
bool monitor_active;
bool esr_active;
bool bt_coex_esr_disabled;
u8 low_latency: 6;
u8 low_latency_actual: 1;
@ -401,6 +408,7 @@ struct iwl_mvm_vif {
u8 authorized:1;
bool ps_disabled;
u32 esr_disable_reason;
u32 ap_beacon_time;
bool bf_enabled;
bool ba_enabled;
@ -1587,7 +1595,7 @@ static inline int iwl_mvm_max_active_links(struct iwl_mvm *mvm,
return mvm->fw->ucode_capa.num_beacons;
if ((iwl_mvm_is_esr_supported(trans) &&
!mvmvif->bt_coex_esr_disabled) ||
!mvmvif->esr_disable_reason) ||
((CSR_HW_RFID_TYPE(trans->hw_rf_id) == IWL_CFG_RF_TYPE_FM &&
CSR_HW_RFID_IS_CDB(trans->hw_rf_id))))
return IWL_MVM_FW_MAX_ACTIVE_LINKS_NUM;
@ -2808,4 +2816,8 @@ int iwl_mvm_roc_add_cmd(struct iwl_mvm *mvm,
struct ieee80211_channel *channel,
struct ieee80211_vif *vif,
int duration, u32 activity);
/* EMLSR */
void iwl_mvm_recalc_esr(struct iwl_mvm *mvm, struct ieee80211_vif *vif);
#endif /* __IWL_MVM_H__ */