diff options
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/api/d3.h | 39 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/api/offload.h | 7 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/d3.c | 227 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/ops.c | 1 |
4 files changed, 230 insertions, 44 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/d3.h b/drivers/net/wireless/intel/iwlwifi/fw/api/d3.h index 4cd9ab23954e..7b2501fe50e6 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/api/d3.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/api/d3.h @@ -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, 2018-2022 Intel Corporation * Copyright (C) 2013-2014 Intel Mobile Communications GmbH * Copyright (C) 2015-2017 Intel Deutschland GmbH */ @@ -766,6 +766,43 @@ struct iwl_wowlan_status_v12 { u8 wake_packet[]; /* can be truncated from _length to _bufsize */ } __packed; /* WOWLAN_STATUSES_RSP_API_S_VER_12 */ +/** + * struct iwl_wowlan_info_notif - WoWLAN information notification + * @gtk: GTK data + * @igtk: IGTK data + * @replay_ctr: GTK rekey replay counter + * @pattern_number: number of the matched patterns + * @reserved1: reserved + * @qos_seq_ctr: QoS sequence counters to use next + * @wakeup_reasons: wakeup reasons, see &enum iwl_wowlan_wakeup_reason + * @num_of_gtk_rekeys: number of GTK rekeys + * @transmitted_ndps: number of transmitted neighbor discovery packets + * @received_beacons: number of received beacons + * @wake_packet_length: wakeup packet length + * @wake_packet_bufsize: wakeup packet buffer size + * @tid_tear_down: bit mask of tids whose BA sessions were closed + * in suspend state + * @station_id: station id + * @reserved2: reserved + */ +struct iwl_wowlan_info_notif { + struct iwl_wowlan_gtk_status_v3 gtk[WOWLAN_GTK_KEYS_NUM]; + struct iwl_wowlan_igtk_status igtk[WOWLAN_IGTK_KEYS_NUM]; + __le64 replay_ctr; + __le16 pattern_number; + __le16 reserved1; + __le16 qos_seq_ctr[8]; + __le32 wakeup_reasons; + __le32 num_of_gtk_rekeys; + __le32 transmitted_ndps; + __le32 received_beacons; + __le32 wake_packet_length; + __le32 wake_packet_bufsize; + u8 tid_tear_down; + u8 station_id; + u8 reserved2[2]; +} __packed; /* WOWLAN_INFO_NTFY_API_S_VER_1 */ + /* TODO: NetDetect API */ #endif /* __iwl_fw_api_d3_h__ */ diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/offload.h b/drivers/net/wireless/intel/iwlwifi/fw/api/offload.h index 5204aa94e72a..ae2263e2e293 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/api/offload.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/api/offload.h @@ -3,7 +3,7 @@ * Copyright (C) 2012-2014 Intel Corporation * Copyright (C) 2013-2015 Intel Mobile Communications GmbH * Copyright (C) 2016-2017 Intel Deutschland GmbH - * Copyright (C) 2021 Intel Corporation + * Copyright (C) 2021-2022 Intel Corporation */ #ifndef __iwl_fw_api_offload_h__ #define __iwl_fw_api_offload_h__ @@ -13,6 +13,11 @@ */ enum iwl_prot_offload_subcmd_ids { /** + * @WOWLAN_INFO_NOTIFICATION: Notification in &struct iwl_wowlan_info_notif + */ + WOWLAN_INFO_NOTIFICATION = 0xFD, + + /** * @STORED_BEACON_NTF: &struct iwl_stored_beacon_notif */ STORED_BEACON_NTF = 0xFF, diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c index 518755b756b4..f522cc105b53 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c @@ -1995,6 +1995,30 @@ iwl_mvm_parse_wowlan_status_common(v7) iwl_mvm_parse_wowlan_status_common(v9) iwl_mvm_parse_wowlan_status_common(v12) +static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm, + struct iwl_wowlan_info_notif *data, + struct iwl_wowlan_status_data *status, + u32 len) +{ + u32 i; + + if (len < sizeof(*data)) { + IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); + status = NULL; + return; + } + + status->replay_ctr = le64_to_cpu(data->replay_ctr); + status->pattern_number = le16_to_cpu(data->pattern_number); + for (i = 0; i < IWL_MAX_TID_COUNT; i++) + status->qos_seq_ctr[i] = + le16_to_cpu(data->qos_seq_ctr[i]); + status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); + status->num_of_gtk_rekeys = + le32_to_cpu(data->num_of_gtk_rekeys); + status->received_beacons = le32_to_cpu(data->received_beacons); +} + static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status, struct iwl_wowlan_gtk_status_v2 *data) { @@ -2194,15 +2218,13 @@ iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm, u8 sta_id) /* releases the MVM mutex */ static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, - struct ieee80211_vif *vif) + struct ieee80211_vif *vif, + struct iwl_wowlan_status_data *status) { - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - struct iwl_wowlan_status_data *status; int i; bool keep; struct iwl_mvm_sta *mvm_ap_sta; - status = iwl_mvm_get_wakeup_status(mvm, mvmvif->ap_sta_id); if (!status) goto out_unlock; @@ -2212,7 +2234,7 @@ static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, /* still at hard-coded place 0 for D3 image */ mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0); if (!mvm_ap_sta) - goto out_free; + goto out_unlock; for (i = 0; i < IWL_MAX_TID_COUNT; i++) { u16 seq = status->qos_seq_ctr[i]; @@ -2235,11 +2257,8 @@ static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, keep = iwl_mvm_setup_connection_keep(mvm, vif, status); - kfree(status); return keep; -out_free: - kfree(status); out_unlock: mutex_unlock(&mvm->mutex); return false; @@ -2356,24 +2375,23 @@ static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm, } static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm, - struct ieee80211_vif *vif) + struct ieee80211_vif *vif, + struct iwl_wowlan_status_data *status) { struct cfg80211_wowlan_nd_info *net_detect = NULL; struct cfg80211_wowlan_wakeup wakeup = { .pattern_idx = -1, }; struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; - struct iwl_wowlan_status_data *status; struct iwl_mvm_nd_query_results query; unsigned long matched_profiles; u32 reasons = 0; int i, n_matches, ret; - status = iwl_mvm_get_wakeup_status(mvm, IWL_MVM_INVALID_STA); - if (status) { - reasons = status->wakeup_reasons; - kfree(status); - } + if (WARN_ON(!status)) + return; + + reasons = status->wakeup_reasons; if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) wakeup.rfkill_release = true; @@ -2504,16 +2522,142 @@ static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm, return false; } +/** + * enum iwl_d3_notif - d3 notifications + * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received + */ +enum iwl_d3_notif { + IWL_D3_NOTIF_WOWLAN_INFO = BIT(0), +}; + +/* manage d3 resume data */ +struct iwl_d3_data { + struct iwl_wowlan_status_data *status; + bool test; + u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */ + u32 notif_received; /* bitmap - see &enum iwl_d3_notif */ +}; + +/* + * This function assumes: + * 1. The mutex is already held. + * 2. The callee functions unlock the mutex. + */ +static void iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm, + struct ieee80211_vif *vif, + struct iwl_d3_data *d3_data, + bool test) +{ + lockdep_assert_held(&mvm->mutex); + + /* if FW uses status notification, status shouldn't be NULL here */ + if (!d3_data->status) { + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); + + d3_data->status = iwl_mvm_get_wakeup_status(mvm, mvm->net_detect ? + IWL_MVM_INVALID_STA : + mvmvif->ap_sta_id); + } + + if (mvm->net_detect) { + iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data->status); + } else { + bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif, + d3_data->status); + +#ifdef CONFIG_IWLWIFI_DEBUGFS + if (keep) + mvm->keep_vif = vif; +#endif + + if (!test) + ieee80211_iterate_active_interfaces_mtx(mvm->hw, + IEEE80211_IFACE_ITER_NORMAL, + iwl_mvm_d3_disconnect_iter, + keep ? vif : NULL); + } +} + +static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait, + struct iwl_rx_packet *pkt, void *data) +{ + struct iwl_mvm *mvm = + container_of(notif_wait, struct iwl_mvm, notif_wait); + struct iwl_d3_data *d3_data = data; + u32 len; + + switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) { + case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): { + struct iwl_wowlan_info_notif *notif = (void *)pkt->data; + + if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) { + /* We might get two notifications due to dual bss */ + IWL_DEBUG_WOWLAN(mvm, + "Got additional wowlan info notification\n"); + break; + } + + d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO; + len = iwl_rx_packet_payload_len(pkt); + iwl_mvm_parse_wowlan_info_notif(mvm, notif, d3_data->status, + len); + break; + } + default: + WARN_ON(1); + } + + return d3_data->notif_received == d3_data->notif_expected; +} + +#define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5) + +static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm, + struct iwl_d3_data *d3_data, + enum iwl_d3_status *d3_status, + bool test) +{ + static const u16 d3_resume_notif[] = { + WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION) + }; + struct iwl_notification_wait wait_d3_notif; + int ret; + + iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, + d3_resume_notif, ARRAY_SIZE(d3_resume_notif), + iwl_mvm_wait_d3_notif, d3_data); + + ret = iwl_trans_d3_resume(mvm->trans, d3_status, test, false); + if (ret) { + iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif); + return ret; + } + + if (*d3_status != IWL_D3_STATUS_ALIVE) { + IWL_INFO(mvm, "Device was reset during suspend\n"); + iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif); + return -ENOENT; + } + + return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif, + IWL_MVM_D3_NOTIF_TIMEOUT); +} + static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) { struct ieee80211_vif *vif = NULL; int ret = 1; enum iwl_d3_status d3_status; - bool keep = false; + struct iwl_d3_data d3_data = { + .test = test, + .notif_expected = IWL_D3_NOTIF_WOWLAN_INFO, + }; bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST); + /* currently disabled */ + bool resume_notif_based = false; mutex_lock(&mvm->mutex); @@ -2537,7 +2681,20 @@ static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) goto err; } - ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !unified_image); + if (resume_notif_based) { + d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL); + if (!d3_data.status) { + IWL_ERR(mvm, "Failed to allocate wowlan status\n"); + ret = -ENOMEM; + goto err; + } + + ret = iwl_mvm_d3_notif_wait(mvm, &d3_data, &d3_status, test); + } else { + ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, + !unified_image); + } + if (ret) goto err; @@ -2546,7 +2703,7 @@ static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) goto err; } - if (d0i3_first) { + if (d0i3_first && mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000) { struct iwl_host_cmd cmd = { .id = D0I3_END_CMD, .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, @@ -2576,41 +2733,27 @@ static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) /* Re-configure default SAR profile */ iwl_mvm_sar_select_profile(mvm, 1, 1); - if (mvm->net_detect) { + if (mvm->net_detect && unified_image) { /* If this is a non-unified image, we restart the FW, * so no need to stop the netdetect scan. If that * fails, continue and try to get the wake-up reasons, * but trigger a HW restart by keeping a failure code * in ret. */ - if (unified_image) - ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT, - false); - - iwl_mvm_query_netdetect_reasons(mvm, vif); - /* has unlocked the mutex, so skip that */ - goto out; - } else { - keep = iwl_mvm_query_wakeup_reasons(mvm, vif); -#ifdef CONFIG_IWLWIFI_DEBUGFS - if (keep) - mvm->keep_vif = vif; -#endif - /* has unlocked the mutex, so skip that */ - goto out_iterate; + ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT, + false); } + iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data, d3_data.test); + /* has unlocked the mutex, so skip that */ + goto out; + err: - iwl_mvm_free_nd(mvm); mutex_unlock(&mvm->mutex); - -out_iterate: - if (!test) - ieee80211_iterate_active_interfaces_mtx(mvm->hw, - IEEE80211_IFACE_ITER_NORMAL, - iwl_mvm_d3_disconnect_iter, keep ? vif : NULL); - out: + kfree(d3_data.status); + iwl_mvm_free_nd(mvm); + clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); /* no need to reset the device in unified images, if successful */ diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c index 7ed4f5a0abc3..e380ee841773 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c @@ -574,6 +574,7 @@ static const struct iwl_hcmd_names iwl_mvm_location_names[] = { * Access is done through binary search */ static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = { + HCMD_NAME(WOWLAN_INFO_NOTIFICATION), HCMD_NAME(STORED_BEACON_NTF), }; |