int iwl_scan_initiate(struct iwl_priv *priv) { if (!iwl_is_ready_rf(priv)) { IWL_DEBUG_SCAN("Aborting scan due to not ready.\n"); return -EIO; } if (test_bit(STATUS_SCANNING, &priv->status)) { IWL_DEBUG_SCAN("Scan already in progress.\n"); return -EAGAIN; } if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) { IWL_DEBUG_SCAN("Scan request while abort pending\n"); return -EAGAIN; } IWL_DEBUG_INFO("Starting scan...\n"); if (priv->cfg->sku & IWL_SKU_G) priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ); if (priv->cfg->sku & IWL_SKU_A) priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ); set_bit(STATUS_SCANNING, &priv->status); priv->scan_start = jiffies; priv->scan_pass_start = priv->scan_start; queue_work(priv->workqueue, &priv->request_scan); return 0; }
void iwl_bg_scan_completed(struct work_struct *work) { struct iwl_priv *priv = container_of(work, struct iwl_priv, scan_completed); bool internal = false; IWL_DEBUG_SCAN(priv, "SCAN complete scan\n"); cancel_delayed_work(&priv->scan_check); mutex_lock(&priv->mutex); if (priv->is_internal_short_scan) { priv->is_internal_short_scan = false; IWL_DEBUG_SCAN(priv, "internal short scan completed\n"); internal = true; } mutex_unlock(&priv->mutex); /* * Do not hold mutex here since this will cause mac80211 to call * into driver again into functions that will attempt to take * mutex. */ if (!internal) ieee80211_scan_completed(priv->hw, false); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; /* Since setting the TXPOWER may have been deferred while * performing the scan, fire one off */ mutex_lock(&priv->mutex); iwl_set_tx_power(priv, priv->tx_power_user_lmt, true); mutex_unlock(&priv->mutex); }
int iwl_mvm_scan_offload_stop(struct iwl_mvm *mvm, bool notify) { int ret; struct iwl_notification_wait wait_scan_done; static const u8 scan_done_notif[] = { SCAN_OFFLOAD_COMPLETE, }; bool sched = mvm->scan_status == IWL_MVM_SCAN_SCHED; lockdep_assert_held(&mvm->mutex); if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) return iwl_umac_scan_stop(mvm, IWL_UMAC_SCAN_UID_SCHED_SCAN, notify); if (mvm->scan_status == IWL_MVM_SCAN_NONE) return 0; if (iwl_mvm_is_radio_killed(mvm)) { ret = 0; goto out; } iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, scan_done_notif, ARRAY_SIZE(scan_done_notif), NULL, NULL); ret = iwl_mvm_send_scan_offload_abort(mvm); if (ret) { IWL_DEBUG_SCAN(mvm, "Send stop %sscan failed %d\n", sched ? "offloaded " : "", ret); iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); goto out; } IWL_DEBUG_SCAN(mvm, "Successfully sent stop %sscan\n", sched ? "offloaded " : ""); ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ); out: /* * Clear the scan status so the next scan requests will succeed. This * also ensures the Rx handler doesn't do anything, as the scan was * stopped from above. Since the rx handler won't do anything now, * we have to release the scan reference here. */ if (mvm->scan_status == IWL_MVM_SCAN_OS) iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); mvm->scan_status = IWL_MVM_SCAN_NONE; if (notify) { if (sched) ieee80211_sched_scan_stopped(mvm->hw); else ieee80211_scan_completed(mvm->hw, true); } return ret; }
int iwl_mac_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct cfg80211_scan_request *req) { struct iwl_priv *priv = hw->priv; int ret; IWL_DEBUG_MAC80211(priv, "enter\n"); if (req->n_channels == 0) return -EINVAL; mutex_lock(&priv->mutex); if (!iwl_is_ready_rf(priv)) { ret = -EIO; IWL_DEBUG_MAC80211(priv, "leave - not ready or exit pending\n"); goto out_unlock; } if (test_bit(STATUS_SCANNING, &priv->status) && !priv->is_internal_short_scan) { IWL_DEBUG_SCAN(priv, "Scan already in progress.\n"); ret = -EAGAIN; goto out_unlock; } if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) { IWL_DEBUG_SCAN(priv, "Scan request while abort pending\n"); ret = -EAGAIN; goto out_unlock; } /* mac80211 will only ask for one band at a time */ priv->scan_band = req->channels[0]->band; priv->scan_request = req; priv->scan_vif = vif; /* * If an internal scan is in progress, just set * up the scan_request as per above. */ if (priv->is_internal_short_scan) ret = 0; else ret = iwl_scan_initiate(priv, vif); IWL_DEBUG_MAC80211(priv, "leave\n"); out_unlock: mutex_unlock(&priv->mutex); return ret; }
static void iwl_process_scan_complete(struct iwl_priv *priv) { bool aborted; lockdep_assert_held(&priv->mutex); if (!test_and_clear_bit(STATUS_SCAN_COMPLETE, &priv->status)) return; IWL_DEBUG_SCAN(priv, "Completed scan.\n"); cancel_delayed_work(&priv->scan_check); aborted = test_and_clear_bit(STATUS_SCAN_ABORTING, &priv->status); if (aborted) IWL_DEBUG_SCAN(priv, "Aborted scan completed.\n"); if (!test_and_clear_bit(STATUS_SCANNING, &priv->status)) { IWL_DEBUG_SCAN(priv, "Scan already completed.\n"); goto out_settings; } if (priv->scan_type != IWL_SCAN_NORMAL && !aborted) { int err; /* Check if mac80211 requested scan during our internal scan */ if (priv->scan_request == NULL) goto out_complete; /* If so request a new scan */ err = iwl_scan_initiate(priv, priv->scan_vif, IWL_SCAN_NORMAL, priv->scan_request->channels[0]->band); if (err) { IWL_DEBUG_SCAN(priv, "failed to initiate pending scan: %d\n", err); aborted = true; goto out_complete; } return; } out_complete: iwl_complete_scan(priv, aborted); out_settings: /* Can we still talk to firmware ? */ if (!iwl_is_ready_rf(priv)) return; iwlagn_post_scan(priv); }
/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */ static int iwl_rx_scan_complete_notif(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb, struct iwl_device_cmd *cmd) { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_scancomplete_notification *scan_notif = (void *)pkt->data; IWL_DEBUG_SCAN(priv, "Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n", scan_notif->scanned_channels, scan_notif->tsf_low, scan_notif->tsf_high, scan_notif->status); IWL_DEBUG_SCAN(priv, "Scan on %sGHz took %dms\n", (priv->scan_band == IEEE80211_BAND_2GHZ) ? "2.4" : "5.2", jiffies_to_msecs(jiffies - priv->scan_start)); /* * When aborting, we run the scan completed background work inline * and the background work must then do nothing. The SCAN_COMPLETE * bit helps implement that logic and thus needs to be set before * queueing the work. Also, since the scan abort waits for SCAN_HW * to clear, we need to set SCAN_COMPLETE before clearing SCAN_HW * to avoid a race there. */ set_bit(STATUS_SCAN_COMPLETE, &priv->status); clear_bit(STATUS_SCAN_HW, &priv->status); queue_work(priv->workqueue, &priv->scan_completed); if (priv->iw_mode != NL80211_IFTYPE_ADHOC && iwl_advanced_bt_coexist(priv) && priv->bt_status != scan_notif->bt_status) { if (scan_notif->bt_status) { /* BT on */ if (!priv->bt_ch_announce) priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH; /* * otherwise, no traffic load information provided * no changes made */ } else { /* BT off */ priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_NONE; } priv->bt_status = scan_notif->bt_status; queue_work(priv->workqueue, &priv->bt_traffic_change_work); } return 0; }
void iwl_bg_scan_completed(struct work_struct *work) { struct iwl_priv *priv = container_of(work, struct iwl_priv, scan_completed); bool internal = false; IWL_DEBUG_SCAN(priv, "SCAN complete scan\n"); cancel_delayed_work(&priv->scan_check); mutex_lock(&priv->mutex); if (priv->is_internal_short_scan) { priv->is_internal_short_scan = false; IWL_DEBUG_SCAN(priv, "internal short scan completed\n"); internal = true; } else { priv->scan_request = NULL; priv->scan_vif = NULL; } if (test_bit(STATUS_EXIT_PENDING, &priv->status)) goto out; if (internal && priv->scan_request) iwl_scan_initiate(priv, priv->scan_vif); /* Since setting the TXPOWER may have been deferred while * performing the scan, fire one off */ iwl_set_tx_power(priv, priv->tx_power_user_lmt, true); /* * Since setting the RXON may have been deferred while * performing the scan, fire one off if needed */ if (memcmp(&priv->active_rxon, &priv->staging_rxon, sizeof(priv->staging_rxon))) iwlcore_commit_rxon(priv); out: mutex_unlock(&priv->mutex); /* * Do not hold mutex here since this will cause mac80211 to call * into driver again into functions that will attempt to take * mutex. */ if (!internal) ieee80211_scan_completed(priv->hw, false); }
void iwl_force_scan_end(struct iwl_priv *priv) { lockdep_assert_held(&priv->mutex); if (!test_bit(STATUS_SCANNING, &priv->status)) { IWL_DEBUG_SCAN(priv, "Forcing scan end while not scanning\n"); return; } IWL_DEBUG_SCAN(priv, "Forcing scan end\n"); clear_bit(STATUS_SCANNING, &priv->status); clear_bit(STATUS_SCAN_HW, &priv->status); clear_bit(STATUS_SCAN_ABORTING, &priv->status); iwl_complete_scan(priv, true); }
/** * iwl_scan_cancel_timeout - Cancel any currently executing HW scan * @ms: amount of time to wait (in milliseconds) for scan to abort * */ void iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms) { unsigned long timeout = jiffies + msecs_to_jiffies(ms); lockdep_assert_held(&priv->mutex); IWL_DEBUG_SCAN(priv, "Scan cancel timeout\n"); iwl_do_scan_abort(priv); while (time_before_eq(jiffies, timeout)) { if (!test_bit(STATUS_SCAN_HW, &priv->status)) goto finished; msleep(20); } return; finished: /* * Now STATUS_SCAN_HW is clear. This means that the * device finished, but the background work is going * to execute at best as soon as we release the mutex. * Since we need to be able to issue a new scan right * after this function returns, run the complete here. * The STATUS_SCAN_COMPLETE bit will then be cleared * and prevent the background work from "completing" * a possible new scan. */ iwl_process_scan_complete(priv); }
/* Service SCAN_START_NOTIFICATION (0x82) */ static int iwl_rx_scan_start_notif(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb, struct iwl_device_cmd *cmd) { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_scanstart_notification *notif = (struct iwl_scanstart_notification *)pkt->u.raw; priv->scan_start_tsf = le32_to_cpu(notif->tsf_low); IWL_DEBUG_SCAN(priv, "Scan start: " "%d [802.11%s] " "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n", notif->channel, notif->band ? "bg" : "a", le32_to_cpu(notif->tsf_high), le32_to_cpu(notif->tsf_low), notif->status, notif->beacon_timer); if (priv->scan_type == IWL_SCAN_ROC && !priv->hw_roc_start_notified) { ieee80211_ready_on_channel(priv->hw); priv->hw_roc_start_notified = true; } return 0; }
static int iwl_mvm_send_scan_offload_abort(struct iwl_mvm *mvm) { int ret; struct iwl_host_cmd cmd = { .id = SCAN_OFFLOAD_ABORT_CMD, }; u32 status; /* Exit instantly with error when device is not ready * to receive scan abort command or it does not perform * scheduled scan currently */ if (mvm->scan_status == IWL_MVM_SCAN_NONE) return -EIO; ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); if (ret) return ret; if (status != CAN_ABORT_STATUS) { /* * The scan abort will return 1 for success or * 2 for "failure". A failure condition can be * due to simply not being in an active scan which * can occur if we send the scan abort before the * microcode has notified us that a scan is completed. */ IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); ret = -ENOENT; } return ret; }
/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */ static void iwl_rx_scan_complete_notif(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) { #ifdef CONFIG_IWLWIFI_DEBUG struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw; IWL_DEBUG_SCAN(priv, "Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n", scan_notif->scanned_channels, scan_notif->tsf_low, scan_notif->tsf_high, scan_notif->status); #endif /* The HW is no longer scanning */ clear_bit(STATUS_SCAN_HW, &priv->status); IWL_DEBUG_INFO(priv, "Scan on %sGHz took %dms\n", (priv->scan_band == IEEE80211_BAND_2GHZ) ? "2.4" : "5.2", jiffies_to_msecs(elapsed_jiffies (priv->scan_start, jiffies))); /* * If a request to abort was given, or the scan did not succeed * then we reset the scan state machine and terminate, * re-queuing another scan if one has been requested */ if (test_and_clear_bit(STATUS_SCAN_ABORTING, &priv->status)) IWL_DEBUG_INFO(priv, "Aborted scan completed.\n"); IWL_DEBUG_INFO(priv, "Setting scan to off\n"); clear_bit(STATUS_SCANNING, &priv->status); queue_work(priv->workqueue, &priv->scan_completed); }
int iwl_mvm_rx_scan_offload_results(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, struct iwl_device_cmd *cmd) { IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); ieee80211_sched_scan_results(mvm->hw); return 0; }
/* Service response to REPLY_SCAN_CMD (0x80) */ static void iwl_rx_reply_scan(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb) { #ifdef CPTCFG_IWLWIFI_DEBUG struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_scanreq_notification *notif = (void *)pkt->data; IWL_DEBUG_SCAN(priv, "Scan request status = 0x%x\n", notif->status); #endif }
int iwl_scan_cancel(struct iwl_priv *priv) { if (!test_bit(STATUS_SCAN_HW, &priv->status)) { clear_bit(STATUS_SCANNING, &priv->status); return 0; } if (test_bit(STATUS_SCANNING, &priv->status)) { if (!test_and_set_bit(STATUS_SCAN_ABORTING, &priv->status)) { IWL_DEBUG_SCAN(priv, "Queuing scan abort.\n"); queue_work(priv->workqueue, &priv->abort_scan); } else IWL_DEBUG_SCAN(priv, "Scan abort already in progress.\n"); return test_bit(STATUS_SCANNING, &priv->status); } return 0; }
/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */ static void iwl_rx_scan_complete_notif(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw; IWL_DEBUG_SCAN(priv, "Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n", scan_notif->scanned_channels, scan_notif->tsf_low, scan_notif->tsf_high, scan_notif->status); /* The HW is no longer scanning */ clear_bit(STATUS_SCAN_HW, &priv->status); IWL_DEBUG_SCAN(priv, "Scan on %sGHz took %dms\n", (priv->scan_band == IEEE80211_BAND_2GHZ) ? "2.4" : "5.2", jiffies_to_msecs(jiffies - priv->scan_start)); queue_work(priv->workqueue, &priv->scan_completed); if (priv->iw_mode != NL80211_IFTYPE_ADHOC && iwl_advanced_bt_coexist(priv) && priv->bt_status != scan_notif->bt_status) { if (scan_notif->bt_status) { /* BT on */ if (!priv->bt_ch_announce) priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH; /* * otherwise, no traffic load information provided * no changes made */ } else { /* BT off */ priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_NONE; } priv->bt_status = scan_notif->bt_status; queue_work(priv->workqueue, &priv->bt_traffic_change_work); } }
int iwl_mvm_rx_scan_offload_iter_complete_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, struct iwl_device_cmd *cmd) { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; IWL_DEBUG_SCAN(mvm, "Scan offload iteration complete: status=0x%x scanned channels=%d\n", notif->status, notif->scanned_channels); return 0; }
/* Service response to REPLY_SCAN_CMD (0x80) */ static int iwl_rx_reply_scan(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb, struct iwl_device_cmd *cmd) { #ifdef CONFIG_IWLWIFI_DEBUG struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_scanreq_notification *notif = (void *)pkt->data; IWL_DEBUG_SCAN(priv, "Scan request status = 0x%x\n", notif->status); #endif return 0; }
static void iwl_complete_scan(struct iwl_priv *priv, bool aborted) { /* check if scan was requested from mac80211 */ if (priv->scan_request) { IWL_DEBUG_SCAN(priv, "Complete scan in mac80211\n"); ieee80211_scan_completed(priv->hw, aborted); } priv->scan_type = IWL_SCAN_NORMAL; priv->scan_vif = NULL; priv->scan_request = NULL; }
void iwl_bg_start_internal_scan(struct work_struct *work) { struct iwl_priv *priv = container_of(work, struct iwl_priv, start_internal_scan); mutex_lock(&priv->mutex); if (priv->is_internal_short_scan == true) { IWL_DEBUG_SCAN(priv, "Internal scan already in progress\n"); goto unlock; } if (!iwl_is_ready_rf(priv)) { IWL_DEBUG_SCAN(priv, "not ready or exit pending\n"); goto unlock; } if (test_bit(STATUS_SCANNING, &priv->status)) { IWL_DEBUG_SCAN(priv, "Scan already in progress.\n"); goto unlock; } if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) { IWL_DEBUG_SCAN(priv, "Scan request while abort pending\n"); goto unlock; } priv->scan_band = priv->band; IWL_DEBUG_SCAN(priv, "Start internal short scan...\n"); set_bit(STATUS_SCANNING, &priv->status); priv->is_internal_short_scan = true; if (WARN_ON(!priv->cfg->ops->utils->request_scan)) goto unlock; priv->cfg->ops->utils->request_scan(priv, NULL); unlock: mutex_unlock(&priv->mutex); }
static int iwl_rx_scan_complete_notif(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb, struct iwl_device_cmd *cmd) { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_scancomplete_notification *scan_notif = (void *)pkt->data; IWL_DEBUG_SCAN(priv, "Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n", scan_notif->scanned_channels, scan_notif->tsf_low, scan_notif->tsf_high, scan_notif->status); IWL_DEBUG_SCAN(priv, "Scan on %sGHz took %dms\n", (priv->scan_band == IEEE80211_BAND_2GHZ) ? "2.4" : "5.2", jiffies_to_msecs(jiffies - priv->scan_start)); set_bit(STATUS_SCAN_COMPLETE, &priv->status); clear_bit(STATUS_SCAN_HW, &priv->status); queue_work(priv->workqueue, &priv->scan_completed); if (priv->iw_mode != NL80211_IFTYPE_ADHOC && iwl_advanced_bt_coexist(priv) && priv->bt_status != scan_notif->bt_status) { if (scan_notif->bt_status) { if (!priv->bt_ch_announce) priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH; } else { priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_NONE; } priv->bt_status = scan_notif->bt_status; queue_work(priv->workqueue, &priv->bt_traffic_change_work); } return 0; }
static void iwl_do_scan_abort(struct iwl_priv *priv) { int ret; lockdep_assert_held(&priv->mutex); if (!test_bit(STATUS_SCANNING, &priv->status)) { IWL_DEBUG_SCAN(priv, "Not performing scan to abort\n"); return; } if (test_and_set_bit(STATUS_SCAN_ABORTING, &priv->status)) { IWL_DEBUG_SCAN(priv, "Scan abort in progress\n"); return; } ret = iwl_send_scan_abort(priv); if (ret) { IWL_DEBUG_SCAN(priv, "Send scan abort failed %d\n", ret); iwl_force_scan_end(priv); } else IWL_DEBUG_SCAN(priv, "Successfully send scan abort\n"); }
static u32 iwl_scan_tx_ant(struct iwl_priv *priv, enum ieee80211_band band) { int i, ind; ind = priv->scan_tx_ant[band]; for (i = 0; i < priv->hw_params.tx_chains_num; i++) { ind = (ind+1) >= priv->hw_params.tx_chains_num ? 0 : ind+1; if (priv->hw_params.valid_tx_ant & (1 << ind)) { priv->scan_tx_ant[band] = ind; break; } } IWL_DEBUG_SCAN("select TX ANT = %c\n", 'A' + ind); return scan_tx_ant[ind]; }
/* Service SCAN_START_NOTIFICATION (0x82) */ static void iwl_rx_scan_start_notif(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb) { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_scanstart_notification *notif = (void *)pkt->data; priv->scan_start_tsf = le32_to_cpu(notif->tsf_low); IWL_DEBUG_SCAN(priv, "Scan start: " "%d [802.11%s] " "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n", notif->channel, notif->band ? "bg" : "a", le32_to_cpu(notif->tsf_high), le32_to_cpu(notif->tsf_low), notif->status, notif->beacon_timer); }
/** * iwl_scan_cancel_timeout - Cancel any currently executing HW scan * @ms: amount of time to wait (in milliseconds) for scan to abort * */ int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms) { unsigned long timeout = jiffies + msecs_to_jiffies(ms); lockdep_assert_held(&priv->mutex); IWL_DEBUG_SCAN(priv, "Scan cancel timeout\n"); iwl_do_scan_abort(priv); while (time_before_eq(jiffies, timeout)) { if (!test_bit(STATUS_SCAN_HW, &priv->status)) break; msleep(20); } return test_bit(STATUS_SCAN_HW, &priv->status); }
void iwl_bg_scan_check(struct work_struct *data) { struct iwl_priv *priv = container_of(data, struct iwl_priv, scan_check.work); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; mutex_lock(&priv->mutex); if (test_bit(STATUS_SCANNING, &priv->status) && !test_bit(STATUS_SCAN_ABORTING, &priv->status)) { IWL_DEBUG_SCAN(priv, "Scan completion watchdog (%dms)\n", jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG)); if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) iwl_send_scan_abort(priv); } mutex_unlock(&priv->mutex); }
/* Service SCAN_RESULTS_NOTIFICATION (0x83) */ static void iwl_rx_scan_results_notif(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) { #ifdef CONFIG_IWLWIFI_DEBUG struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_scanresults_notification *notif = (struct iwl_scanresults_notification *)pkt->u.raw; IWL_DEBUG_SCAN(priv, "Scan ch.res: " "%d [802.11%s] " "(TSF: 0x%08X:%08X) - %d " "elapsed=%lu usec\n", notif->channel, notif->band ? "bg" : "a", le32_to_cpu(notif->tsf_high), le32_to_cpu(notif->tsf_low), le32_to_cpu(notif->statistics[0]), le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf); #endif }
/* Service SCAN_RESULTS_NOTIFICATION (0x83) */ static void iwl_rx_scan_results_notif(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb) { #ifdef CPTCFG_IWLWIFI_DEBUG struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_scanresults_notification *notif = (void *)pkt->data; IWL_DEBUG_SCAN(priv, "Scan ch.res: " "%d [802.11%s] " "probe status: %u:%u " "(TSF: 0x%08X:%08X) - %d " "elapsed=%lu usec\n", notif->channel, notif->band ? "bg" : "a", notif->probe_status, notif->num_probe_not_sent, le32_to_cpu(notif->tsf_high), le32_to_cpu(notif->tsf_low), le32_to_cpu(notif->statistics[0]), le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf); #endif }
int iwl_mvm_rx_scan_offload_complete_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, struct iwl_device_cmd *cmd) { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_periodic_scan_complete *scan_notif; scan_notif = (void *)pkt->data; /* scan status must be locked for proper checking */ lockdep_assert_held(&mvm->mutex); IWL_DEBUG_SCAN(mvm, "%s completed, status %s, EBS status %s\n", mvm->scan_status == IWL_MVM_SCAN_SCHED ? "Scheduled scan" : "Scan", scan_notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? "completed" : "aborted", scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS ? "success" : "failed"); /* only call mac80211 completion if the stop was initiated by FW */ if (mvm->scan_status == IWL_MVM_SCAN_SCHED) { mvm->scan_status = IWL_MVM_SCAN_NONE; ieee80211_sched_scan_stopped(mvm->hw); } else if (mvm->scan_status == IWL_MVM_SCAN_OS) { mvm->scan_status = IWL_MVM_SCAN_NONE; ieee80211_scan_completed(mvm->hw, scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); } if (scan_notif->ebs_status) mvm->last_ebs_successful = false; return 0; }
static int iwl_send_scan_abort(struct iwl_priv *priv) { int ret; struct iwl_rx_packet *pkt; struct iwl_host_cmd cmd = { .id = REPLY_SCAN_ABORT_CMD, .flags = CMD_WANT_SKB, }; /* Exit instantly with error when device is not ready * to receive scan abort command or it does not perform * hardware scan currently */ if (!test_bit(STATUS_READY, &priv->status) || !test_bit(STATUS_GEO_CONFIGURED, &priv->status) || !test_bit(STATUS_SCAN_HW, &priv->status) || test_bit(STATUS_FW_ERROR, &priv->status) || test_bit(STATUS_EXIT_PENDING, &priv->status)) return -EIO; ret = iwl_send_cmd_sync(priv, &cmd); if (ret) return ret; pkt = (struct iwl_rx_packet *)cmd.reply_page; if (pkt->u.status != CAN_ABORT_STATUS) { /* The scan abort will return 1 for success or * 2 for "failure". A failure condition can be * due to simply not being in an active scan which * can occur if we send the scan abort before we * the microcode has notified us that a scan is * completed. */ IWL_DEBUG_SCAN(priv, "SCAN_ABORT ret %d.\n", pkt->u.status); ret = -EIO; } iwl_free_pages(priv, cmd.reply_page); return ret; }