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 */
80 	/* For CDB this is low band scan type, for non-CDB - type. */
244 		 * set all scan requests as fast-balance scan  in _iwl_mvm_get_scan_type()
288 	/* require rrm scan whenever the fw supports it */  in iwl_mvm_rrm_scan_needed()
314 	 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs  in iwl_mvm_max_scan_ie_len()
316 	 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan  in iwl_mvm_max_scan_ie_len()
318 	 * bytes for scan IEs, which is clearly not enough. So meanwhile  in iwl_mvm_max_scan_ie_len()
320 	 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac  in iwl_mvm_max_scan_ie_len()
333 		       "Scan offload iteration complete: status=0x%x scanned channels=%d\n",  in iwl_mvm_rx_lmac_scan_iter_complete_notif()
337 		IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");  in iwl_mvm_rx_lmac_scan_iter_complete_notif()
346 	IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");  in iwl_mvm_rx_scan_match_found()
378 	/* scan status must be locked for proper checking */  in iwl_mvm_rx_lmac_scan_complete_notif()
381 	/* We first check if we were stopping a scan, in which case we  in iwl_mvm_rx_lmac_scan_complete_notif()
385 	 * Note that we can have a stopping and a running scan  in iwl_mvm_rx_lmac_scan_complete_notif()
394 		IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",  in iwl_mvm_rx_lmac_scan_complete_notif()
405 		IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n",  in iwl_mvm_rx_lmac_scan_complete_notif()
413 		IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",  in iwl_mvm_rx_lmac_scan_complete_notif()
430 		IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n",  in iwl_mvm_rx_lmac_scan_complete_notif()
440 			"got scan complete notification but no scan is running\n");  in iwl_mvm_rx_lmac_scan_complete_notif()
490 	/* add SSIDs from scan SSID list */  in iwl_scan_build_ssids()
586 	IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n");  in iwl_mvm_config_sched_scan_profiles()
601 			       "Sending scheduled scan with filtering, n_match_sets %d\n",  in iwl_mvm_scan_pass_all()
607 	IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n");  in iwl_mvm_scan_pass_all()
627 		 * The scan abort will return 1 for success or  in iwl_mvm_lmac_scan_abort()
629 		 * due to simply not being in an active scan which  in iwl_mvm_lmac_scan_abort()
630 		 * can occur if we send the scan abort before the  in iwl_mvm_lmac_scan_abort()
631 		 * microcode has notified us that a scan is completed.  in iwl_mvm_lmac_scan_abort()
633 		IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status);  in iwl_mvm_lmac_scan_abort()
754 	 * Unfortunately, right now the offload scan doesn't support randomising  in iwl_mvm_build_scan_probe()
756 	 * it in the driver. This means that the scan iterations won't really be  in iwl_mvm_build_scan_probe()
852 	 *	3. if only single scan, the single scan EBS API is supported;  in iwl_mvm_scan_use_ebs()
975 	 * If the number of iterations of the last scan plan is set to  in iwl_mvm_scan_lmac()
977 	 * For example, when regular scan is requested the driver sets one scan  in iwl_mvm_scan_lmac()
1207 	 * Check for fragmented scan on LMAC2 - high band.  in iwl_mvm_legacy_config_scan()
1226 	IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");  in iwl_mvm_legacy_config_scan()
1266 	IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");  in iwl_mvm_config_scan()
1757 		 * Avoid performing passive scan on non PSC channels unless the  in iwl_mvm_umac_scan_cfg_channels_v7_6g()
1758 		 * scan is specifically a passive scan, i.e., no SSIDs  in iwl_mvm_umac_scan_cfg_channels_v7_6g()
1759 		 * configured in the scan command.  in iwl_mvm_umac_scan_cfg_channels_v7_6g()
1776 		 * The optimize the scan time, i.e., reduce the scan dwell time  in iwl_mvm_umac_scan_cfg_channels_v7_6g()
1819 					 * matching SSID, i.e., scan for hidden  in iwl_mvm_umac_scan_cfg_channels_v7_6g()
1863 		 * In the following cases apply passive scan:  in iwl_mvm_umac_scan_cfg_channels_v7_6g()
1864 		 * 1. Non fragmented scan:  in iwl_mvm_umac_scan_cfg_channels_v7_6g()
1873 		 * 3. Fragmented scan:  in iwl_mvm_umac_scan_cfg_channels_v7_6g()
1930 	/* set fragmented ebs for fragmented scan on HB channels */  in iwl_mvm_scan_umac_chan_flags_v2()
1938 	 * 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()
1939 	 * GO operation into consideration during scan operation.  in iwl_mvm_scan_umac_chan_flags_v2()
1969 			       "6GHz passive scan: Not supported by FW\n");  in iwl_mvm_scan_6ghz_passive_scan()
1973 	/* 6GHz passive scan allowed only on station interface  */  in iwl_mvm_scan_6ghz_passive_scan()
1976 			       "6GHz passive scan: not station interface\n");  in iwl_mvm_scan_6ghz_passive_scan()
1981 	 * 6GHz passive scan is allowed in a defined time interval following HW  in iwl_mvm_scan_6ghz_passive_scan()
1983 	 * has passed since the last 6GHz passive scan.  in iwl_mvm_scan_6ghz_passive_scan()
1991 		IWL_DEBUG_SCAN(mvm, "6GHz passive scan: %s\n",  in iwl_mvm_scan_6ghz_passive_scan()
1997 	/* not enough channels in the regular scan request */  in iwl_mvm_scan_6ghz_passive_scan()
2000 			       "6GHz passive scan: not enough channels\n");  in iwl_mvm_scan_6ghz_passive_scan()
2009 	/* not a wildcard scan, so cannot enable passive 6GHz scan */  in iwl_mvm_scan_6ghz_passive_scan()
2012 			       "6GHz passive scan: no wildcard SSID\n");  in iwl_mvm_scan_6ghz_passive_scan()
2018 			       "6GHz passive scan: no 6GHz channels\n");  in iwl_mvm_scan_6ghz_passive_scan()
2029 	 * scan  in iwl_mvm_scan_6ghz_passive_scan()
2033 			       "6GHz passive scan: 6GHz channels enabled\n");  in iwl_mvm_scan_6ghz_passive_scan()
2037 	/* all conditions to enable 6ghz passive scan are satisfied */  in iwl_mvm_scan_6ghz_passive_scan()
2038 	IWL_DEBUG_SCAN(mvm, "6GHz passive scan: can be enabled\n");  in iwl_mvm_scan_6ghz_passive_scan()
2050 	 * If no direct SSIDs are provided perform a passive scan. Otherwise,  in iwl_mvm_scan_umac_flags_v2()
2052 	 * that the scan is intended for roaming purposes and thus enable Rx on  in iwl_mvm_scan_umac_flags_v2()
2174 	 * only scan type on low band also for CDB.  in iwl_mvm_scan_umac_flags()
2223 	 * If the number of iterations of the last scan plan is set to  in iwl_mvm_fill_scan_sched_params()
2225 	 * For example, when regular scan is requested the driver sets one scan  in iwl_mvm_fill_scan_sched_params()
2286 		/* set fragmented ebs for fragmented scan on HB channels */  in iwl_mvm_scan_umac()
2352 		 * be possible that the link ID would be part of the scan  in iwl_mvm_scan_umac_fill_general_p_v12()
2593 	 * trying to run a scan type that is already running, we  in iwl_mvm_check_running_scans()
2595 	 * different type of scan, we stop the opposite type to make  in iwl_mvm_check_running_scans()
2598 	 * scheduled scan before starting a normal scan.  in iwl_mvm_check_running_scans()
2601 	/* FW supports only a single periodic scan */  in iwl_mvm_check_running_scans()
2634 		 * another scheduled scan while suspended.  in iwl_mvm_check_running_scans()
2642 		/* Something is wrong if no scan was running but we  in iwl_mvm_check_running_scans()
2662 	IWL_ERR(mvm, "regular scan timed out\n");  in iwl_mvm_scan_timeout_wk()
2735  * override the scan request to scan only the associated channel and only for
2770 	/* The mei filtered scan must find the AP, otherwise CSME will  in iwl_mvm_mei_limited_scan()
2772 	 * make the scan more robust.  in iwl_mvm_mei_limited_scan()
2779 	IWL_DEBUG_SCAN(mvm, "Mei scan: num iterations=%u\n", scan_iters);  in iwl_mvm_mei_limited_scan()
2939 		IWL_ERR(mvm, "scan while LAR regdomain is not set\n");  in iwl_mvm_reg_scan_start()
2994 		/* If the scan failed, it usually means that the FW was unable  in iwl_mvm_reg_scan_start()
2998 		IWL_ERR(mvm, "Scan failed! ret %d\n", ret);  in iwl_mvm_reg_scan_start()
3004 	IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");  in iwl_mvm_reg_scan_start()
3036 		IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");  in iwl_mvm_sched_scan_start()
3071 	 * waiting for over 18 hours to start the scan is a bit silly  in iwl_mvm_sched_scan_start()
3133 			       "Sched scan request was sent successfully\n");  in iwl_mvm_sched_scan_start()
3136 		/* If the scan failed, it usually means that the FW was unable  in iwl_mvm_sched_scan_start()
3140 		IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret);  in iwl_mvm_sched_scan_start()
3161 	/* if the scan is already stopping, we don't need to notify mac80211 */  in iwl_mvm_rx_umac_scan_complete_notif()
3180 		       "Scan completed, uid %u type %u, status %s, EBS status %s\n",  in iwl_mvm_rx_umac_scan_complete_notif()
3206 		       "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n",  in iwl_mvm_rx_umac_scan_iter_complete_notif()
3210 		IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");  in iwl_mvm_rx_umac_scan_iter_complete_notif()
3216 		       "UMAC Scan iteration complete: scan started at %llu (TSF)\n",  in iwl_mvm_rx_umac_scan_iter_complete_notif()
3228 	 * checked that this type of scan was running in the generic  in iwl_mvm_umac_scan_abort()
3237 	IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid);  in iwl_mvm_umac_scan_abort()
3262 	IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type);  in iwl_mvm_scan_stop_wait()
3270 		IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type);  in iwl_mvm_scan_stop_wait()
3353 			/* Sched scan will be restarted by mac80211 in  in iwl_mvm_report_scan_aborted()
3378 				      "UMAC scan UID %d status was not cleaned\n",  in iwl_mvm_report_scan_aborted()
3392 		/* Sched scan will be restarted by mac80211 in  in iwl_mvm_report_scan_aborted()
3420 	/* Clear the scan status so the next scan requests will  in iwl_mvm_scan_stop()
3421 	 * succeed and mark the scan as stopping, so that the Rx  in iwl_mvm_scan_stop()
3422 	 * handler doesn't do anything, as the scan was stopped from  in iwl_mvm_scan_stop()