12 #include "fw/api/scan.h"
24 /* adaptive dwell max budget time [TU] for full scan */
26 /* adaptive dwell max budget time [TU] for directed scan */
34 /* number of scan channels */
45 /* minimal number of 2GHz and 5GHz channels in the regular scan request */
48 /* Number of iterations on the channel for mei filtered scan */
82 	/* For CDB this is low band scan type, for non-CDB - type. */
234 	 * Force a non-fragmented scan in that case.  in _iwl_mvm_get_scan_type()
254 		 * in case of DCM with P2P GO set all scan requests as  in _iwl_mvm_get_scan_type()
255 		 * fast-balance scan  in _iwl_mvm_get_scan_type()
297 	/* require rrm scan whenever the fw supports it */  in iwl_mvm_rrm_scan_needed()
323 	 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs  in iwl_mvm_max_scan_ie_len()
325 	 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan  in iwl_mvm_max_scan_ie_len()
327 	 * bytes for scan IEs, which is clearly not enough. So meanwhile  in iwl_mvm_max_scan_ie_len()
329 	 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac  in iwl_mvm_max_scan_ie_len()
342 		       "Scan offload iteration complete: status=0x%x scanned channels=%d\n",  in iwl_mvm_rx_lmac_scan_iter_complete_notif()
346 		IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");  in iwl_mvm_rx_lmac_scan_iter_complete_notif()
355 	IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");  in iwl_mvm_rx_scan_match_found()
387 	/* scan status must be locked for proper checking */  in iwl_mvm_rx_lmac_scan_complete_notif()
390 	/* We first check if we were stopping a scan, in which case we  in iwl_mvm_rx_lmac_scan_complete_notif()
394 	 * Note that we can have a stopping and a running scan  in iwl_mvm_rx_lmac_scan_complete_notif()
403 		IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",  in iwl_mvm_rx_lmac_scan_complete_notif()
414 		IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n",  in iwl_mvm_rx_lmac_scan_complete_notif()
422 		IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",  in iwl_mvm_rx_lmac_scan_complete_notif()
439 		IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n",  in iwl_mvm_rx_lmac_scan_complete_notif()
449 			"got scan complete notification but no scan is running\n");  in iwl_mvm_rx_lmac_scan_complete_notif()
499 	/* add SSIDs from scan SSID list */  in iwl_scan_build_ssids()
595 	IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n");  in iwl_mvm_config_sched_scan_profiles()
610 			       "Sending scheduled scan with filtering, n_match_sets %d\n",  in iwl_mvm_scan_pass_all()
616 	IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n");  in iwl_mvm_scan_pass_all()
636 		 * The scan abort will return 1 for success or  in iwl_mvm_lmac_scan_abort()
638 		 * due to simply not being in an active scan which  in iwl_mvm_lmac_scan_abort()
639 		 * can occur if we send the scan abort before the  in iwl_mvm_lmac_scan_abort()
640 		 * microcode has notified us that a scan is completed.  in iwl_mvm_lmac_scan_abort()
642 		IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status);  in iwl_mvm_lmac_scan_abort()
761 	 * Unfortunately, right now the offload scan doesn't support randomising  in iwl_mvm_build_scan_probe()
763 	 * it in the driver. This means that the scan iterations won't really be  in iwl_mvm_build_scan_probe()
859 	 *	3. if only single scan, the single scan EBS API is supported;  in iwl_mvm_scan_use_ebs()
863 	 *	6. the VIF is not an AP interface (scan wants survey results)  in iwl_mvm_scan_use_ebs()
984 	 * If the number of iterations of the last scan plan is set to  in iwl_mvm_scan_lmac()
986 	 * For example, when regular scan is requested the driver sets one scan  in iwl_mvm_scan_lmac()
1216 	 * Check for fragmented scan on LMAC2 - high band.  in iwl_mvm_legacy_config_scan()
1235 	IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");  in iwl_mvm_legacy_config_scan()
1275 	IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");  in iwl_mvm_config_scan()
1664 			/* 6 GHz channels should only appear in a scan request  in iwl_mvm_umac_scan_cfg_channels_v7()
1666 			 * scan, which has to be passive.  in iwl_mvm_umac_scan_cfg_channels_v7()
1746 			       "scan: invalid BSSID at index %u, index_b=%u\n",  in iwl_mvm_umac_scan_fill_6g_chan_list()
1784 		 * Avoid performing passive scan on non PSC channels unless the  in iwl_mvm_umac_scan_cfg_channels_v7_6g()
1785 		 * scan is specifically a passive scan, i.e., no SSIDs  in iwl_mvm_umac_scan_cfg_channels_v7_6g()
1786 		 * configured in the scan command.  in iwl_mvm_umac_scan_cfg_channels_v7_6g()
1826 		 * In the following cases apply passive scan:  in iwl_mvm_umac_scan_cfg_channels_v7_6g()
1827 		 * 1. Non fragmented scan:  in iwl_mvm_umac_scan_cfg_channels_v7_6g()
1836 		 * 3. Fragmented scan:  in iwl_mvm_umac_scan_cfg_channels_v7_6g()
1870 		 * The optimize the scan time, i.e., reduce the scan dwell time  in iwl_mvm_umac_scan_cfg_channels_v7_6g()
1906 					/* Hidden AP, cannot do passive scan */  in iwl_mvm_umac_scan_cfg_channels_v7_6g()
1979 	/* set fragmented ebs for fragmented scan on HB channels */  in iwl_mvm_scan_umac_chan_flags_v2()
1987 	 * force EBS in case the scan is a fragmented and there is a need to take P2P  in iwl_mvm_scan_umac_chan_flags_v2()
1988 	 * GO operation into consideration during scan operation.  in iwl_mvm_scan_umac_chan_flags_v2()
2018 			       "6GHz passive scan: Not supported by FW\n");  in iwl_mvm_scan_6ghz_passive_scan()
2022 	/* 6GHz passive scan allowed only on station interface  */  in iwl_mvm_scan_6ghz_passive_scan()
2025 			       "6GHz passive scan: not station interface\n");  in iwl_mvm_scan_6ghz_passive_scan()
2030 	 * 6GHz passive scan is allowed in a defined time interval following HW  in iwl_mvm_scan_6ghz_passive_scan()
2032 	 * has passed since the last 6GHz passive scan.  in iwl_mvm_scan_6ghz_passive_scan()
2040 		IWL_DEBUG_SCAN(mvm, "6GHz passive scan: %s\n",  in iwl_mvm_scan_6ghz_passive_scan()
2046 	/* not enough channels in the regular scan request */  in iwl_mvm_scan_6ghz_passive_scan()
2049 			       "6GHz passive scan: not enough channels\n");  in iwl_mvm_scan_6ghz_passive_scan()
2058 	/* not a wildcard scan, so cannot enable passive 6GHz scan */  in iwl_mvm_scan_6ghz_passive_scan()
2061 			       "6GHz passive scan: no wildcard SSID\n");  in iwl_mvm_scan_6ghz_passive_scan()
2067 			       "6GHz passive scan: no 6GHz channels\n");  in iwl_mvm_scan_6ghz_passive_scan()
2078 	 * scan  in iwl_mvm_scan_6ghz_passive_scan()
2082 			       "6GHz passive scan: 6GHz channels enabled\n");  in iwl_mvm_scan_6ghz_passive_scan()
2086 	/* all conditions to enable 6ghz passive scan are satisfied */  in iwl_mvm_scan_6ghz_passive_scan()
2087 	IWL_DEBUG_SCAN(mvm, "6GHz passive scan: can be enabled\n");  in iwl_mvm_scan_6ghz_passive_scan()
2099 	 * If no direct SSIDs are provided perform a passive scan. Otherwise,  in iwl_mvm_scan_umac_flags_v2()
2101 	 * that the scan is intended for roaming purposes and thus enable Rx on  in iwl_mvm_scan_umac_flags_v2()
2231 	 * only scan type on low band also for CDB.  in iwl_mvm_scan_umac_flags()
2280 	 * If the number of iterations of the last scan plan is set to  in iwl_mvm_fill_scan_sched_params()
2282 	 * For example, when regular scan is requested the driver sets one scan  in iwl_mvm_fill_scan_sched_params()
2341 		/* set fragmented ebs for fragmented scan on HB channels */  in iwl_mvm_scan_umac()
2636 	 * trying to run a scan type that is already running, we  in iwl_mvm_check_running_scans()
2638 	 * different type of scan, we stop the opposite type to make  in iwl_mvm_check_running_scans()
2641 	 * scheduled scan before starting a normal scan.  in iwl_mvm_check_running_scans()
2644 	/* FW supports only a single periodic scan */  in iwl_mvm_check_running_scans()
2677 		 * another scheduled scan while suspended.  in iwl_mvm_check_running_scans()
2685 		/* Something is wrong if no scan was running but we  in iwl_mvm_check_running_scans()
2705 	IWL_ERR(mvm, "regular scan timed out\n");  in iwl_mvm_scan_timeout_wk()
2778  * override the scan request to scan only the associated channel and only for
2813 	/* The mei filtered scan must find the AP, otherwise CSME will  in iwl_mvm_mei_limited_scan()
2815 	 * make the scan more robust.  in iwl_mvm_mei_limited_scan()
2822 	IWL_DEBUG_SCAN(mvm, "Mei scan: num iterations=%u\n", scan_iters);  in iwl_mvm_mei_limited_scan()
2985 		IWL_ERR(mvm, "scan while LAR regdomain is not set\n");  in _iwl_mvm_single_scan_start()
3047 		/* If the scan failed, it usually means that the FW was unable  in _iwl_mvm_single_scan_start()
3051 		IWL_ERR(mvm, "Scan failed! ret %d\n", ret);  in _iwl_mvm_single_scan_start()
3056 	IWL_DEBUG_SCAN(mvm, "Scan request send success: type=%u, uid=%u\n",  in _iwl_mvm_single_scan_start()
3101 		IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");  in iwl_mvm_sched_scan_start()
3136 	 * waiting for over 18 hours to start the scan is a bit silly  in iwl_mvm_sched_scan_start()
3196 			       "Sched scan request send success: type=%u, uid=%u\n",  in iwl_mvm_sched_scan_start()
3201 		/* If the scan failed, it usually means that the FW was unable  in iwl_mvm_sched_scan_start()
3205 		IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret);  in iwl_mvm_sched_scan_start()
3227 		       "Scan completed: uid=%u type=%u, status=%s, EBS=%s\n",  in iwl_mvm_rx_umac_scan_complete_notif()
3233 	IWL_DEBUG_SCAN(mvm, "Scan completed: scan_status=0x%x\n",  in iwl_mvm_rx_umac_scan_complete_notif()
3237 		       "Scan completed: line=%u, iter=%u, elapsed time=%u\n",  in iwl_mvm_rx_umac_scan_complete_notif()
3244 	/* if the scan is already stopping, we don't need to notify mac80211 */  in iwl_mvm_rx_umac_scan_complete_notif()
3254 		/* It is possible that by the time the scan is complete the link  in iwl_mvm_rx_umac_scan_complete_notif()
3260 			IWL_DEBUG_SCAN(mvm, "Scan link is no longer valid\n");  in iwl_mvm_rx_umac_scan_complete_notif()
3270 		IWL_DEBUG_SCAN(mvm, "Internal MLO scan completed\n");  in iwl_mvm_rx_umac_scan_complete_notif()
3272 		 * Other scan types won't necessarily scan for the MLD links channels.  in iwl_mvm_rx_umac_scan_complete_notif()
3273 		 * Therefore, only select links after successful internal scan.  in iwl_mvm_rx_umac_scan_complete_notif()
3280 	IWL_DEBUG_SCAN(mvm, "Scan completed: after update: scan_status=0x%x\n",  in iwl_mvm_rx_umac_scan_complete_notif()
3302 		       "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n",  in iwl_mvm_rx_umac_scan_iter_complete_notif()
3306 		IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");  in iwl_mvm_rx_umac_scan_iter_complete_notif()
3312 		       "UMAC Scan iteration complete: scan started at %llu (TSF)\n",  in iwl_mvm_rx_umac_scan_iter_complete_notif()
3334 	 * checked that this type of scan was running in the generic  in iwl_mvm_umac_scan_abort()
3343 	IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid);  in iwl_mvm_umac_scan_abort()
3347 	IWL_DEBUG_SCAN(mvm, "Scan abort: ret=%d, status=%u\n", ret, status);  in iwl_mvm_umac_scan_abort()
3351 	/* Handle the case that the FW is no longer familiar with the scan that  in iwl_mvm_umac_scan_abort()
3352 	 * is to be stopped. In such a case, it is expected that the scan  in iwl_mvm_umac_scan_abort()
3354 	 * In such a case, there is no need to wait for a scan complete  in iwl_mvm_umac_scan_abort()
3356 	 * the scan was really aborted.  in iwl_mvm_umac_scan_abort()
3381 	IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type);  in iwl_mvm_scan_stop_wait()
3389 		IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type);  in iwl_mvm_scan_stop_wait()
3393 		IWL_DEBUG_SCAN(mvm, "no need to wait for scan type %d\n", type);  in iwl_mvm_scan_stop_wait()
3476 			/* Sched scan will be restarted by mac80211 in  in iwl_mvm_report_scan_aborted()
3487 			IWL_DEBUG_SCAN(mvm, "Internal MLO scan aborted\n");  in iwl_mvm_report_scan_aborted()
3512 				      "UMAC scan UID %d status was not cleaned\n",  in iwl_mvm_report_scan_aborted()
3526 		/* Sched scan will be restarted by mac80211 in  in iwl_mvm_report_scan_aborted()
3543 		       "Request to stop scan: type=0x%x, status=0x%x\n",  in iwl_mvm_scan_stop()
3558 		IWL_DEBUG_SCAN(mvm, "Failed to stop scan\n");  in iwl_mvm_scan_stop()
3561 	/* Clear the scan status so the next scan requests will  in iwl_mvm_scan_stop()
3562 	 * succeed and mark the scan as stopping, so that the Rx  in iwl_mvm_scan_stop()
3563 	 * handler doesn't do anything, as the scan was stopped from  in iwl_mvm_scan_stop()
3597 	IWL_DEBUG_SCAN(mvm, "Starting Internal MLO scan: n_channels=%zu\n",  in iwl_mvm_int_mlo_scan_start()
3629 	IWL_DEBUG_SCAN(mvm, "Internal MLO scan: ret=%d\n", ret);  in iwl_mvm_int_mlo_scan_start()
3643 		IWL_DEBUG_SCAN(mvm, "Internal MLO scan is already running\n");  in iwl_mvm_int_mlo_scan()