From patchwork Sun May 5 06:19:57 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Korenblit, Miriam Rachel" X-Patchwork-Id: 13654191 X-Patchwork-Delegate: johannes@sipsolutions.net Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0EAFEF9C1 for ; Sun, 5 May 2024 06:20:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.12 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714890039; cv=none; b=u9QxIsrwg7MkOh9plq5cDxCsdPSkso17telqV/gyWst82gAMmKN4qiz98eVFOn6/auuWN7bhAvAMQDiLjxg/zIcZfHMxAz3sufe48ILBM5LIYeh9qKZFNKdA1ujeG/tg+9d/Peb/vgO1D/foO7gkom62eYHc+6AQekotkDJa8yM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714890039; c=relaxed/simple; bh=i05ucL3UByLUTnCfTUKBID5y5qboKlKBH859LTfdmhE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Nkq0P1ZxZabqwQnV2ySkrBzhOKEPNUjpaLwlYxVqnCUjz0gUeFmMx7y5NWr4NcoIiq9fp9sq4mVNgPruBw8LPwzUfimtW4hksMvCtul3EX/WLzz+gG4c5NwmEw/+LNoVN3UaBAzyfKrnW+kInkIPYSqFBZnwgwc27fQschB/EFs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=RWHl44hV; arc=none smtp.client-ip=192.198.163.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="RWHl44hV" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1714890038; x=1746426038; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=i05ucL3UByLUTnCfTUKBID5y5qboKlKBH859LTfdmhE=; b=RWHl44hVgDk6J4GhveRETwkFRkuEbxL14bxR9Qihaw+o9BCL/zTAB3p5 KiluMO9aj0f881fHwKkE4u520SYKCbPvEuLaTropyn3tio1PWpPTo1Mu2 Ux0pGAjaGQz3PPEhef6KP2uiuIq6FcY2G8op0n4/1+ajo+Mp1xwcGhhUa UhjeNeGb5QGPXbGZLPGlmbD6yIHwStiIPd3Ut4ufc3nVAQaJOdYy2LgY8 UEY9NhPuwsb0s9Z/bTEbOvXOgNeujJ3YyLJ3IKlhBn9u/o9QhCAjt0vh2 DPiSBiEcgls+AXsn/yLE97WI4puqZl998b6s4RR/aoD7TF1NEWGT+NPd1 g==; X-CSE-ConnectionGUID: MaudlskuQZOgCTjWPq5uHw== X-CSE-MsgGUID: 6b74BQ9SSr2jXYch/onq7Q== X-IronPort-AV: E=McAfee;i="6600,9927,11063"; a="14461833" X-IronPort-AV: E=Sophos;i="6.07,255,1708416000"; d="scan'208";a="14461833" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 May 2024 23:20:37 -0700 X-CSE-ConnectionGUID: 2uPdR9KCSN+ffN+bSFR+og== X-CSE-MsgGUID: b4zVmWr6Rd22RuWKr8cI7g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,255,1708416000"; d="scan'208";a="27903632" Received: from unknown (HELO WEIS0040.iil.intel.com) ([10.12.217.108]) by orviesa009-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 May 2024 23:20:37 -0700 From: Miri Korenblit To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Yedidya Benshimol Subject: [PATCH 13/15] wifi: iwlwifi: mvm: Block EMLSR when a p2p/softAP vif is active Date: Sun, 5 May 2024 09:19:57 +0300 Message-Id: <20240505091420.916193759f8a.Idf3a3caf5cdc3e69c81710b7ceb57e87f2de87e4@changeid> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240505061959.825245-1-miriam.rachel.korenblit@intel.com> References: <20240505061959.825245-1-miriam.rachel.korenblit@intel.com> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Organization: Intel Israel (74) Limited From: Yedidya Benshimol When there's an active link in a non-station vif, the station vif is not allowed to enter EMLSR Note that blocking EMLSR by calling iwl_mvm_block_esr() we will schedule an exit from EMLSR worker, but the worker cannot run before the activation of the non-BSS link, as ieee80211_remain_on_channel already holds the wiphy mutex. Handle that by explicitly calling ieee80211_set_active_links() to leave EMLSR, and then doing iwl_mvm_block_esr() only for consistency and to avoid re-entering it before ready. Note that a call to ieee80211_set_active_links requires to release the mvm mutex, but that's ok since we still hold the wiphy lock. The only thing that might race here is the ESR_MODE_NOTIF, so this changes its handler to run under the wiphy lock. Signed-off-by: Yedidya Benshimol Signed-off-by: Miri Korenblit Co-developed-by: Miri Korenblit --- drivers/net/wireless/intel/iwlwifi/mvm/d3.c | 17 ++-- drivers/net/wireless/intel/iwlwifi/mvm/link.c | 85 +++++++++++++++++++ .../net/wireless/intel/iwlwifi/mvm/mac80211.c | 6 +- .../wireless/intel/iwlwifi/mvm/mld-mac80211.c | 16 ++++ drivers/net/wireless/intel/iwlwifi/mvm/mvm.h | 6 ++ drivers/net/wireless/intel/iwlwifi/mvm/ops.c | 3 +- .../wireless/intel/iwlwifi/mvm/time-event.c | 19 ++++- 7 files changed, 133 insertions(+), 19 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c index 778ea64f3f28..71e6b06481a9 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c @@ -1243,7 +1243,7 @@ static int __iwl_mvm_suspend(struct ieee80211_hw *hw, .data[0] = &d3_cfg_cmd_data, .len[0] = sizeof(d3_cfg_cmd_data), }; - int ret, primary_link; + int ret; int len __maybe_unused; bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); @@ -1261,18 +1261,11 @@ static int __iwl_mvm_suspend(struct ieee80211_hw *hw, if (IS_ERR_OR_NULL(vif)) return 1; - primary_link = iwl_mvm_get_primary_link(vif); - - /* leave ESR immediately, not only async with iwl_mvm_block_esr() */ - if (ieee80211_vif_is_mld(vif)) { - ret = ieee80211_set_active_links(vif, BIT(primary_link)); - if (ret) - return ret; - } + ret = iwl_mvm_block_esr_sync(mvm, vif, IWL_MVM_ESR_BLOCKED_WOWLAN); + if (ret) + return ret; mutex_lock(&mvm->mutex); - /* only additionally block for consistency and to avoid concurrency */ - iwl_mvm_block_esr(mvm, vif, IWL_MVM_ESR_BLOCKED_WOWLAN, primary_link); set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); @@ -1280,7 +1273,7 @@ static int __iwl_mvm_suspend(struct ieee80211_hw *hw, mvmvif = iwl_mvm_vif_from_mac80211(vif); - mvm_link = mvmvif->link[primary_link]; + mvm_link = mvmvif->link[iwl_mvm_get_primary_link(vif)]; if (WARN_ON_ONCE(!mvm_link)) { ret = -EINVAL; goto out_noreset; diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/link.c b/drivers/net/wireless/intel/iwlwifi/mvm/link.c index 7db4a834569c..7c8cfa72b8bb 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/link.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/link.c @@ -108,6 +108,65 @@ int iwl_mvm_add_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif, return iwl_mvm_link_cmd_send(mvm, &cmd, FW_CTXT_ACTION_ADD); } +struct iwl_mvm_esr_iter_data { + struct ieee80211_vif *vif; + unsigned int link_id; + bool lift_block; +}; + +static void iwl_mvm_esr_vif_iterator(void *_data, u8 *mac, + struct ieee80211_vif *vif) +{ + struct iwl_mvm_esr_iter_data *data = _data; + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); + int link_id; + + if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_STATION) + return; + + for_each_mvm_vif_valid_link(mvmvif, link_id) { + struct iwl_mvm_vif_link_info *link_info = + mvmvif->link[link_id]; + if (vif == data->vif && link_id == data->link_id) + continue; + if (link_info->active) + data->lift_block = false; + } +} + +int iwl_mvm_esr_non_bss_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif, + unsigned int link_id, bool active) +{ + /* An active link of a non-station vif blocks EMLSR. Upon activation + * block EMLSR on the bss vif. Upon deactivation, check if this link + * was the last non-station link active, and if so unblock the bss vif + */ + struct ieee80211_vif *bss_vif = iwl_mvm_get_bss_vif(mvm); + struct iwl_mvm_esr_iter_data data = { + .vif = vif, + .link_id = link_id, + .lift_block = true, + }; + + if (IS_ERR_OR_NULL(bss_vif)) + return 0; + + if (active) + return iwl_mvm_block_esr_sync(mvm, bss_vif, + IWL_MVM_ESR_BLOCKED_NON_BSS); + + ieee80211_iterate_active_interfaces(mvm->hw, + IEEE80211_IFACE_ITER_NORMAL, + iwl_mvm_esr_vif_iterator, &data); + if (data.lift_block) { + mutex_lock(&mvm->mutex); + iwl_mvm_unblock_esr(mvm, bss_vif, IWL_MVM_ESR_BLOCKED_NON_BSS); + mutex_unlock(&mvm->mutex); + } + + return 0; +} + int iwl_mvm_link_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_bss_conf *link_conf, u32 changes, bool active) @@ -924,6 +983,32 @@ void iwl_mvm_block_esr(struct iwl_mvm *mvm, struct ieee80211_vif *vif, iwl_mvm_exit_esr(mvm, vif, reason, link_to_keep); } +int iwl_mvm_block_esr_sync(struct iwl_mvm *mvm, struct ieee80211_vif *vif, + enum iwl_mvm_esr_state reason) +{ + int primary_link = iwl_mvm_get_primary_link(vif); + int ret; + + if (!IWL_MVM_AUTO_EML_ENABLE || !ieee80211_vif_is_mld(vif)) + return 0; + + /* This should be called only with blocking reasons */ + if (WARN_ON(!(reason & IWL_MVM_BLOCK_ESR_REASONS))) + return 0; + + /* leave ESR immediately, not only async with iwl_mvm_block_esr() */ + ret = ieee80211_set_active_links(vif, BIT(primary_link)); + if (ret) + return ret; + + mutex_lock(&mvm->mutex); + /* only additionally block for consistency and to avoid concurrency */ + iwl_mvm_block_esr(mvm, vif, reason, primary_link); + mutex_unlock(&mvm->mutex); + + return 0; +} + static void iwl_mvm_esr_unblocked(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index f28ffefd434e..dbfbbfb5b678 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -4830,6 +4830,10 @@ int iwl_mvm_roc_common(struct ieee80211_hw *hw, struct ieee80211_vif *vif, */ flush_work(&mvm->roc_done_wk); + ret = iwl_mvm_esr_non_bss_link(mvm, vif, 0, true); + if (ret) + return ret; + mutex_lock(&mvm->mutex); switch (vif->type) { @@ -4873,9 +4877,7 @@ int iwl_mvm_cancel_roc(struct ieee80211_hw *hw, IWL_DEBUG_MAC80211(mvm, "enter\n"); - mutex_lock(&mvm->mutex); iwl_mvm_stop_roc(mvm, vif); - mutex_unlock(&mvm->mutex); IWL_DEBUG_MAC80211(mvm, "leave\n"); return 0; diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mld-mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mld-mac80211.c index 748c72cbb2dc..bceafd551e8f 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mld-mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mld-mac80211.c @@ -391,6 +391,18 @@ static int iwl_mvm_mld_assign_vif_chanctx(struct ieee80211_hw *hw, struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); int ret; + /* update EMLSR mode */ + if (ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_STATION) { + ret = iwl_mvm_esr_non_bss_link(mvm, vif, link_conf->link_id, + true); + /* + * Don't activate this link if failed to exit EMLSR in + * the BSS interface + */ + if (ret) + return ret; + } + mutex_lock(&mvm->mutex); ret = __iwl_mvm_mld_assign_vif_chanctx(mvm, vif, link_conf, ctx, false); mutex_unlock(&mvm->mutex); @@ -514,6 +526,10 @@ static void iwl_mvm_mld_unassign_vif_chanctx(struct ieee80211_hw *hw, iwl_mvm_add_link(mvm, vif, link_conf); } mutex_unlock(&mvm->mutex); + + /* update EMLSR mode */ + if (ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_STATION) + iwl_mvm_esr_non_bss_link(mvm, vif, link_conf->link_id, false); } static void diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h index 96d29eae8903..115aa1ad970e 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h @@ -358,6 +358,7 @@ struct iwl_mvm_vif_link_info { * @IWL_MVM_ESR_BLOCKED_WOWLAN: WOWLAN is preventing the enablement of EMLSR * @IWL_MVM_ESR_BLOCKED_TPT: block EMLSR when there is not enough traffic * @IWL_MVM_ESR_BLOCKED_FW: FW didn't recommended/forced exit from EMLSR + * @IWL_MVM_ESR_BLOCKED_NON_BSS: An active non-bssid link's preventing EMLSR * @IWL_MVM_ESR_EXIT_MISSED_BEACON: exited EMLSR due to missed beacons * @IWL_MVM_ESR_EXIT_LOW_RSSI: link is deactivated/not allowed for EMLSR * due to low RSSI. @@ -372,6 +373,7 @@ enum iwl_mvm_esr_state { IWL_MVM_ESR_BLOCKED_WOWLAN = 0x2, IWL_MVM_ESR_BLOCKED_TPT = 0x4, IWL_MVM_ESR_BLOCKED_FW = 0x8, + IWL_MVM_ESR_BLOCKED_NON_BSS = 0x10, IWL_MVM_ESR_EXIT_MISSED_BEACON = 0x10000, IWL_MVM_ESR_EXIT_LOW_RSSI = 0x20000, IWL_MVM_ESR_EXIT_COEX = 0x40000, @@ -2888,6 +2890,8 @@ bool iwl_mvm_vif_has_esr_cap(struct iwl_mvm *mvm, struct ieee80211_vif *vif); void iwl_mvm_block_esr(struct iwl_mvm *mvm, struct ieee80211_vif *vif, enum iwl_mvm_esr_state reason, u8 link_to_keep); +int iwl_mvm_block_esr_sync(struct iwl_mvm *mvm, struct ieee80211_vif *vif, + enum iwl_mvm_esr_state reason); void iwl_mvm_unblock_esr(struct iwl_mvm *mvm, struct ieee80211_vif *vif, enum iwl_mvm_esr_state reason); void iwl_mvm_exit_esr(struct iwl_mvm *mvm, struct ieee80211_vif *vif, @@ -2904,4 +2908,6 @@ iwl_mvm_bt_coex_calculate_esr_mode(struct iwl_mvm *mvm, struct ieee80211_vif *vif, s32 link_rssi, bool primary); +int iwl_mvm_esr_non_bss_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif, + unsigned int link_id, bool active); #endif /* __IWL_MVM_H__ */ diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c index 55ac5552b2f8..155a44e8ab07 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c @@ -445,7 +445,8 @@ static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = { struct iwl_channel_switch_error_notif), RX_HANDLER_GRP(DATA_PATH_GROUP, ESR_MODE_NOTIF, - iwl_mvm_rx_esr_mode_notif, RX_HANDLER_ASYNC_LOCKED, + iwl_mvm_rx_esr_mode_notif, + RX_HANDLER_ASYNC_LOCKED_WIPHY, struct iwl_mvm_esr_mode_notif), RX_HANDLER_GRP(DATA_PATH_GROUP, MONITOR_NOTIF, diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c b/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c index ad960faceb0d..8ee4498f4245 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c @@ -47,6 +47,10 @@ void iwl_mvm_te_clear_data(struct iwl_mvm *mvm, static void iwl_mvm_cleanup_roc(struct iwl_mvm *mvm) { + struct ieee80211_vif *vif = mvm->p2p_device_vif; + + lockdep_assert_held(&mvm->mutex); + /* * Clear the ROC_RUNNING status bit. * This will cause the TX path to drop offchannel transmissions. @@ -70,9 +74,7 @@ static void iwl_mvm_cleanup_roc(struct iwl_mvm *mvm) * not really racy. */ - if (!WARN_ON(!mvm->p2p_device_vif)) { - struct ieee80211_vif *vif = mvm->p2p_device_vif; - + if (!WARN_ON(!vif)) { mvmvif = iwl_mvm_vif_from_mac80211(vif); iwl_mvm_flush_sta(mvm, mvmvif->deflink.bcast_sta.sta_id, mvmvif->deflink.bcast_sta.tfd_queue_msk); @@ -106,6 +108,7 @@ static void iwl_mvm_cleanup_roc(struct iwl_mvm *mvm) if (mvm->mld_api_is_used) { iwl_mvm_mld_rm_aux_sta(mvm); + mutex_unlock(&mvm->mutex); return; } @@ -115,6 +118,10 @@ static void iwl_mvm_cleanup_roc(struct iwl_mvm *mvm) if (iwl_mvm_has_new_station_api(mvm->fw)) iwl_mvm_rm_aux_sta(mvm); } + + mutex_unlock(&mvm->mutex); + if (vif) + iwl_mvm_esr_non_bss_link(mvm, vif, 0, false); } void iwl_mvm_roc_done_wk(struct work_struct *wk) @@ -122,8 +129,8 @@ 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); + /* Mutex is released inside */ iwl_mvm_cleanup_roc(mvm); - mutex_unlock(&mvm->mutex); } static void iwl_mvm_roc_finished(struct iwl_mvm *mvm) @@ -1220,6 +1227,8 @@ void iwl_mvm_stop_roc(struct iwl_mvm *mvm, struct ieee80211_vif *vif) struct iwl_mvm_vif *mvmvif; struct iwl_mvm_time_event_data *te_data; + mutex_lock(&mvm->mutex); + if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) { mvmvif = iwl_mvm_vif_from_mac80211(vif); @@ -1263,6 +1272,8 @@ void iwl_mvm_stop_roc(struct iwl_mvm *mvm, struct ieee80211_vif *vif) set_bit(vif->type == NL80211_IFTYPE_P2P_DEVICE ? IWL_MVM_STATUS_ROC_RUNNING : IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status); + + /* Mutex is released inside this function */ iwl_mvm_cleanup_roc(mvm); }