From 4670d8dca8af0824b82010b7ad478fd505572006 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 14 Jun 2023 12:41:34 +0300 Subject: [PATCH] wifi: iwlwifi: mvm: track u-APSD misbehaving AP by AP address If the AP is an AP MLD, then we shouldn't track just the BSSID but the MLD address. Just generally use ap_addr since it has the BSSID in the non-MLD case. Signed-off-by: Johannes Berg Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20230614123447.b6a4f7edd10c.Ie5a8029ed686b9441620ba06596d430432f65559@changeid Signed-off-by: Johannes Berg --- .../net/wireless/intel/iwlwifi/mvm/debugfs-vif.c | 6 ++-- drivers/net/wireless/intel/iwlwifi/mvm/mvm.h | 2 +- drivers/net/wireless/intel/iwlwifi/mvm/power.c | 35 ++++++++++++++-------- 3 files changed, 26 insertions(+), 17 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c index 3613b1f..cb4ecad 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* - * Copyright (C) 2012-2014, 2018-2021 Intel Corporation + * Copyright (C) 2012-2014, 2018-2023 Intel Corporation * Copyright (C) 2013-2015 Intel Mobile Communications GmbH * Copyright (C) 2016-2017 Intel Deutschland GmbH */ @@ -554,7 +554,7 @@ static ssize_t iwl_dbgfs_uapsd_misbehaving_read(struct file *file, char buf[20]; int len; - len = sprintf(buf, "%pM\n", mvmvif->uapsd_misbehaving_bssid); + len = sprintf(buf, "%pM\n", mvmvif->uapsd_misbehaving_ap_addr); return simple_read_from_buffer(user_buf, count, ppos, buf, len); } @@ -567,7 +567,7 @@ static ssize_t iwl_dbgfs_uapsd_misbehaving_write(struct ieee80211_vif *vif, bool ret; mutex_lock(&mvm->mutex); - ret = mac_pton(buf, mvmvif->uapsd_misbehaving_bssid); + ret = mac_pton(buf, mvmvif->uapsd_misbehaving_ap_addr); mutex_unlock(&mvm->mutex); return ret ? count : -EINVAL; diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h index ee2a526..de7aa47 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h @@ -418,7 +418,7 @@ struct iwl_mvm_vif { #endif /* FW identified misbehaving AP */ - u8 uapsd_misbehaving_bssid[ETH_ALEN]; + u8 uapsd_misbehaving_ap_addr[ETH_ALEN] __aligned(2); struct delayed_work uapsd_nonagg_detected_wk; bool csa_countdown; diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/power.c b/drivers/net/wireless/intel/iwlwifi/mvm/power.c index 19839cc..34d4b7a 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/power.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/power.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* - * Copyright (C) 2012-2014, 2018-2019, 2021 Intel Corporation + * Copyright (C) 2012-2014, 2018-2019, 2021-2023 Intel Corporation * Copyright (C) 2013-2014 Intel Mobile Communications GmbH * Copyright (C) 2015-2017 Intel Deutschland GmbH */ @@ -237,8 +237,8 @@ static bool iwl_mvm_power_allow_uapsd(struct iwl_mvm *mvm, { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - if (!memcmp(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid, - ETH_ALEN)) + if (ether_addr_equal(mvmvif->uapsd_misbehaving_ap_addr, + vif->cfg.ap_addr)) return false; /* @@ -502,9 +502,9 @@ void iwl_mvm_power_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - if (memcmp(vif->bss_conf.bssid, mvmvif->uapsd_misbehaving_bssid, - ETH_ALEN)) - eth_zero_addr(mvmvif->uapsd_misbehaving_bssid); + if (!ether_addr_equal(mvmvif->uapsd_misbehaving_ap_addr, + vif->cfg.ap_addr)) + eth_zero_addr(mvmvif->uapsd_misbehaving_ap_addr); } static void iwl_mvm_power_uapsd_misbehav_ap_iterator(void *_data, u8 *mac, @@ -512,14 +512,23 @@ static void iwl_mvm_power_uapsd_misbehav_ap_iterator(void *_data, u8 *mac, { u8 *ap_sta_id = _data; struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); + struct ieee80211_bss_conf *link_conf; + unsigned int link_id; - /* The ap_sta_id is not expected to change during current association - * so no explicit protection is needed - */ - if (mvmvif->deflink.ap_sta_id == *ap_sta_id) - memcpy(mvmvif->uapsd_misbehaving_bssid, - vif->bss_conf.bssid, - ETH_ALEN); + rcu_read_lock(); + for_each_vif_active_link(vif, link_conf, link_id) { + struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id]; + + /* The ap_sta_id is not expected to change during current + * association so no explicit protection is needed + */ + if (link_info->ap_sta_id == *ap_sta_id) { + ether_addr_copy(mvmvif->uapsd_misbehaving_ap_addr, + vif->cfg.ap_addr); + break; + } + } + rcu_read_unlock(); } void iwl_mvm_power_uapsd_misbehaving_ap_notif(struct iwl_mvm *mvm, -- 2.7.4