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wifi: iwlwifi: mld: fix SMPS W/A

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If the user disables power save of a vif that didn't have it enabled
(for example before association), mac80211 will not notify the driver
with BSS_CHANGED_PS. This will cause the driver to not update the
device-level power save to disabled.
Fix this by checking the vif's power save status upon authorization, and
stop considering the vif's power save status on disassociation.

Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250309073442.1cdeb78b19ba.I58fe02c062524029071b04b093a1b09c5e46f4ef@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Miri Korenblit
2025-03-09 07:36:40 +02:00
committed by Johannes Berg
parent 834bfc698b
commit cb9716eae2
3 changed files with 24 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireless/intel/iwlwifi/mld/iface.h
View File

@@ -134,6 +134,7 @@ struct iwl_mld_emlsr {
* @beacon_inject_active: indicates an active debugfs beacon ie injection
* @low_latency_causes: bit flags, indicating the causes for low-latency,
* see @iwl_mld_low_latency_cause.
* @ps_disabled: indicates that PS is disabled for this interface
* @mld: pointer to the mld structure.
* @deflink: default link data, for use in non-MLO,
* @link: reference to link data for each valid link, for use in MLO.
@@ -159,6 +160,7 @@ struct iwl_mld_vif {
bool beacon_inject_active;
#endif
u8 low_latency_causes;
bool ps_disabled;
);
/* And here fields that survive a fw restart */
struct iwl_mld *mld;

25
drivers/net/wireless/intel/iwlwifi/mld/mac80211.c
View File

@@ -1262,6 +1262,23 @@ iwl_mld_mac80211_link_info_changed(struct ieee80211_hw *hw,
iwl_mld_set_tx_power(mld, link_conf, link_conf->txpower);
}
static void
iwl_mld_smps_wa(struct iwl_mld *mld, struct ieee80211_vif *vif, bool enable)
{
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif);
/* Send the device-level power commands since the
* firmware checks the POWER_TABLE_CMD's POWER_SAVE_EN bit to
* determine SMPS mode.
*/
if (mld_vif->ps_disabled == !enable)
return;
mld_vif->ps_disabled = !enable;
iwl_mld_update_device_power(mld, false);
}
static
void iwl_mld_mac80211_vif_cfg_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
@@ -1295,11 +1312,7 @@ void iwl_mld_mac80211_vif_cfg_changed(struct ieee80211_hw *hw,
}
if (changes & BSS_CHANGED_PS) {
/* Send both device-level and MAC-level power commands since the
* firmware checks the POWER_TABLE_CMD's POWER_SAVE_EN bit to
* determine SMPS mode.
*/
iwl_mld_update_device_power(mld, false);
iwl_mld_smps_wa(mld, vif, vif->cfg.ps);
iwl_mld_update_mac_power(mld, vif, false);
}
@@ -1716,6 +1729,7 @@ static int iwl_mld_move_sta_state_up(struct iwl_mld *mld,
FW_CTXT_ACTION_MODIFY);
if (ret)
return ret;
iwl_mld_smps_wa(mld, vif, vif->cfg.ps);
}
/* MFP is set by default before the station is authorized.
@@ -1758,6 +1772,7 @@ static int iwl_mld_move_sta_state_down(struct iwl_mld *mld,
&mld_vif->emlsr.check_tpt_wk);
iwl_mld_reset_cca_40mhz_workaround(mld, vif);
iwl_mld_smps_wa(mld, vif, true);
}
/* once we move into assoc state, need to update the FW to

3
drivers/net/wireless/intel/iwlwifi/mld/power.c
View File

@@ -15,11 +15,12 @@ static void iwl_mld_vif_ps_iterator(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
bool *ps_enable = (bool *)data;
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif);
if (vif->type != NL80211_IFTYPE_STATION)
return;
*ps_enable &= vif->cfg.ps;
*ps_enable &= !mld_vif->ps_disabled;
}
int iwl_mld_update_device_power(struct iwl_mld *mld, bool d3)