diff options
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/mac80211.c | 126 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/mvm.h | 7 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/ops.c | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/time-event.c | 89 |
4 files changed, 208 insertions, 16 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c index 12a9aed7a5d..5219b3a5689 100644 --- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c @@ -2310,6 +2310,119 @@ static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, } +static bool iwl_mvm_rx_aux_roc(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_hs20_roc_res *resp; + int resp_len = iwl_rx_packet_payload_len(pkt); + struct iwl_mvm_time_event_data *te_data = data; + + if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD)) + return true; + + if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { + IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n"); + return true; + } + + resp = (void *)pkt->data; + + IWL_DEBUG_TE(mvm, + "Aux ROC: Recieved response from ucode: status=%d uid=%d\n", + resp->status, resp->event_unique_id); + + te_data->uid = le32_to_cpu(resp->event_unique_id); + IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", + te_data->uid); + + spin_lock_bh(&mvm->time_event_lock); + list_add_tail(&te_data->list, &mvm->aux_roc_te_list); + spin_unlock_bh(&mvm->time_event_lock); + + return true; +} + +#define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000 +static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm, + struct ieee80211_channel *channel, + struct ieee80211_vif *vif, + int duration) +{ + int res, time_reg = DEVICE_SYSTEM_TIME_REG; + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); + struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data; + static const u8 time_event_response[] = { HOT_SPOT_CMD }; + struct iwl_notification_wait wait_time_event; + struct iwl_hs20_roc_req aux_roc_req = { + .action = cpu_to_le32(FW_CTXT_ACTION_ADD), + .id_and_color = + cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)), + .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id), + /* Set the channel info data */ + .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ? + PHY_BAND_24 : PHY_BAND_5, + .channel_info.channel = channel->hw_value, + .channel_info.width = PHY_VHT_CHANNEL_MODE20, + /* Set the time and duration */ + .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)), + .apply_time_max_delay = + cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)), + .duration = cpu_to_le32(MSEC_TO_TU(duration)), + }; + + /* Set the node address */ + memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN); + + te_data->vif = vif; + te_data->duration = duration; + te_data->id = HOT_SPOT_CMD; + + lockdep_assert_held(&mvm->mutex); + + spin_lock_bh(&mvm->time_event_lock); + list_add_tail(&te_data->list, &mvm->time_event_list); + spin_unlock_bh(&mvm->time_event_lock); + + /* + * Use a notification wait, which really just processes the + * command response and doesn't wait for anything, in order + * to be able to process the response and get the UID inside + * the RX path. Using CMD_WANT_SKB doesn't work because it + * stores the buffer and then wakes up this thread, by which + * time another notification (that the time event started) + * might already be processed unsuccessfully. + */ + iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, + time_event_response, + ARRAY_SIZE(time_event_response), + iwl_mvm_rx_aux_roc, te_data); + + res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req), + &aux_roc_req); + + if (res) { + IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res); + iwl_remove_notification(&mvm->notif_wait, &wait_time_event); + goto out_clear_te; + } + + /* No need to wait for anything, so just pass 1 (0 isn't valid) */ + res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); + /* should never fail */ + WARN_ON_ONCE(res); + + if (res) { + out_clear_te: + spin_lock_bh(&mvm->time_event_lock); + iwl_mvm_te_clear_data(mvm, te_data); + spin_unlock_bh(&mvm->time_event_lock); + } + + return res; +} + static int iwl_mvm_roc(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_channel *channel, @@ -2325,8 +2438,17 @@ static int iwl_mvm_roc(struct ieee80211_hw *hw, IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, duration, type); - if (vif->type != NL80211_IFTYPE_P2P_DEVICE) { - IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type); + switch (vif->type) { + case NL80211_IFTYPE_STATION: + /* Use aux roc framework (HS20) */ + ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, + vif, duration); + return ret; + case NL80211_IFTYPE_P2P_DEVICE: + /* handle below */ + break; + default: + IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); return -EINVAL; } diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h index 24c12c77d93..2cead5d4430 100644 --- a/drivers/net/wireless/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h @@ -82,6 +82,8 @@ /* RSSI offset for WkP */ #define IWL_RSSI_OFFSET 50 #define IWL_MVM_MISSED_BEACONS_THRESHOLD 8 +/* A TimeUnit is 1024 microsecond */ +#define MSEC_TO_TU(_msec) (_msec*1000/1024) /* * The CSA NoA is scheduled IWL_MVM_CHANNEL_SWITCH_TIME TUs before "beacon 0" @@ -336,6 +338,7 @@ struct iwl_mvm_vif { */ struct ieee80211_tx_queue_params queue_params[IEEE80211_NUM_ACS]; struct iwl_mvm_time_event_data time_event_data; + struct iwl_mvm_time_event_data hs_time_event_data; struct iwl_mvm_int_sta bcast_sta; @@ -669,6 +672,9 @@ struct iwl_mvm { u8 bt_tx_prio; enum iwl_bt_force_ant_mode bt_force_ant_mode; + /* Aux ROC */ + struct list_head aux_roc_te_list; + /* Thermal Throttling and CTkill */ struct iwl_mvm_tt_mgmt thermal_throttle; s32 temperature; /* Celsius */ @@ -707,6 +713,7 @@ enum iwl_mvm_status { IWL_MVM_STATUS_ROC_RUNNING, IWL_MVM_STATUS_IN_HW_RESTART, IWL_MVM_STATUS_IN_D0I3, + IWL_MVM_STATUS_ROC_AUX_RUNNING, }; static inline bool iwl_mvm_is_radio_killed(struct iwl_mvm *mvm) diff --git a/drivers/net/wireless/iwlwifi/mvm/ops.c b/drivers/net/wireless/iwlwifi/mvm/ops.c index 19a66b59027..904228aa64c 100644 --- a/drivers/net/wireless/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/iwlwifi/mvm/ops.c @@ -289,6 +289,7 @@ static const char *const iwl_mvm_cmd_strings[REPLY_MAX] = { CMD(MATCH_FOUND_NOTIFICATION), CMD(SCAN_OFFLOAD_REQUEST_CMD), CMD(SCAN_OFFLOAD_ABORT_CMD), + CMD(HOT_SPOT_CMD), CMD(SCAN_OFFLOAD_COMPLETE), CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD), CMD(SCAN_ITERATION_COMPLETE), @@ -419,6 +420,7 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, mutex_init(&mvm->d0i3_suspend_mutex); spin_lock_init(&mvm->async_handlers_lock); INIT_LIST_HEAD(&mvm->time_event_list); + INIT_LIST_HEAD(&mvm->aux_roc_te_list); INIT_LIST_HEAD(&mvm->async_handlers_list); spin_lock_init(&mvm->time_event_lock); diff --git a/drivers/net/wireless/iwlwifi/mvm/time-event.c b/drivers/net/wireless/iwlwifi/mvm/time-event.c index ae52613b97f..33e5041f1ef 100644 --- a/drivers/net/wireless/iwlwifi/mvm/time-event.c +++ b/drivers/net/wireless/iwlwifi/mvm/time-event.c @@ -72,9 +72,6 @@ #include "iwl-io.h" #include "iwl-prph.h" -/* A TimeUnit is 1024 microsecond */ -#define MSEC_TO_TU(_msec) (_msec*1000/1024) - /* * For the high priority TE use a time event type that has similar priority to * the FW's action scan priority. @@ -100,6 +97,21 @@ void iwl_mvm_te_clear_data(struct iwl_mvm *mvm, void iwl_mvm_roc_done_wk(struct work_struct *wk) { struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, roc_done_wk); + u32 queues = 0; + + /* + * Clear the ROC_RUNNING /ROC_AUX_RUNNING status bit. + * This will cause the TX path to drop offchannel transmissions. + * That would also be done by mac80211, but it is racy, in particular + * in the case that the time event actually completed in the firmware + * (which is handled in iwl_mvm_te_handle_notif). + */ + if (test_and_clear_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status)) + queues |= BIT(IWL_MVM_OFFCHANNEL_QUEUE); + if (test_and_clear_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) + queues |= BIT(mvm->aux_queue); + + iwl_mvm_unref(mvm, IWL_MVM_REF_ROC); synchronize_net(); @@ -113,22 +125,12 @@ void iwl_mvm_roc_done_wk(struct work_struct *wk) * issue as it will have to complete before the next command is * executed, and a new time event means a new command. */ - iwl_mvm_flush_tx_path(mvm, BIT(IWL_MVM_OFFCHANNEL_QUEUE), false); + iwl_mvm_flush_tx_path(mvm, queues, false); } static void iwl_mvm_roc_finished(struct iwl_mvm *mvm) { /* - * First, clear the ROC_RUNNING status bit. This will cause the TX - * path to drop offchannel transmissions. That would also be done - * by mac80211, but it is racy, in particular in the case that the - * time event actually completed in the firmware (which is handled - * in iwl_mvm_te_handle_notif). - */ - clear_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status); - iwl_mvm_unref(mvm, IWL_MVM_REF_ROC); - - /* * Of course, our status bit is just as racy as mac80211, so in * addition, fire off the work struct which will drop all frames * from the hardware queues that made it through the race. First @@ -263,6 +265,60 @@ static void iwl_mvm_te_handle_notif(struct iwl_mvm *mvm, } /* + * Handle A Aux ROC time event + */ +static int iwl_mvm_aux_roc_te_handle_notif(struct iwl_mvm *mvm, + struct iwl_time_event_notif *notif) +{ + struct iwl_mvm_time_event_data *te_data, *tmp; + bool aux_roc_te = false; + + list_for_each_entry_safe(te_data, tmp, &mvm->aux_roc_te_list, list) { + if (le32_to_cpu(notif->unique_id) == te_data->uid) { + aux_roc_te = true; + break; + } + } + if (!aux_roc_te) /* Not a Aux ROC time event */ + return -EINVAL; + + if (!le32_to_cpu(notif->status)) { + IWL_DEBUG_TE(mvm, + "ERROR: Aux ROC Time Event %s notification failure\n", + (le32_to_cpu(notif->action) & + TE_V2_NOTIF_HOST_EVENT_START) ? "start" : "end"); + return -EINVAL; + } + + IWL_DEBUG_TE(mvm, + "Aux ROC time event notification - UID = 0x%x action %d\n", + le32_to_cpu(notif->unique_id), + le32_to_cpu(notif->action)); + + if (le32_to_cpu(notif->action) == TE_V2_NOTIF_HOST_EVENT_END) { + /* End TE, notify mac80211 */ + ieee80211_remain_on_channel_expired(mvm->hw); + iwl_mvm_roc_finished(mvm); /* flush aux queue */ + list_del(&te_data->list); /* remove from list */ + te_data->running = false; + te_data->vif = NULL; + te_data->uid = 0; + } else if (le32_to_cpu(notif->action) == TE_V2_NOTIF_HOST_EVENT_START) { + set_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status); + set_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status); + te_data->running = true; + ieee80211_ready_on_channel(mvm->hw); /* Start TE */ + } else { + IWL_DEBUG_TE(mvm, + "ERROR: Unknown Aux ROC Time Event (action = %d)\n", + le32_to_cpu(notif->action)); + return -EINVAL; + } + + return 0; +} + +/* * The Rx handler for time event notifications */ int iwl_mvm_rx_time_event_notif(struct iwl_mvm *mvm, @@ -278,10 +334,15 @@ int iwl_mvm_rx_time_event_notif(struct iwl_mvm *mvm, le32_to_cpu(notif->action)); spin_lock_bh(&mvm->time_event_lock); + /* This time event is triggered for Aux ROC request */ + if (!iwl_mvm_aux_roc_te_handle_notif(mvm, notif)) + goto unlock; + list_for_each_entry_safe(te_data, tmp, &mvm->time_event_list, list) { if (le32_to_cpu(notif->unique_id) == te_data->uid) iwl_mvm_te_handle_notif(mvm, te_data, notif); } +unlock: spin_unlock_bh(&mvm->time_event_lock); return 0; |