summaryrefslogtreecommitdiff
path: root/package/madwifi/patches/351-scanlist.patch
blob: 6a4ae8b2f5b412762f98d5b0009c149d32ed3db0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
--- a/net80211/ieee80211_scan_sta.c
+++ b/net80211/ieee80211_scan_sta.c
@@ -317,147 +317,6 @@
 #undef ISPROBE
 }
 
-static struct ieee80211_channel *
-find11gchannel(struct ieee80211com *ic, int i, int freq)
-{
-	struct ieee80211_channel *c;
-	int j;
-
-	/*
-	 * The normal ordering in the channel list is b channel
-	 * immediately followed by g so optimize the search for
-	 * this.  We'll still do a full search just in case.
-	 */
-	for (j = i+1; j < ic->ic_nchans; j++) {
-		c = &ic->ic_channels[j];
-		if (c->ic_freq == freq && IEEE80211_IS_CHAN_ANYG(c))
-			return c;
-	}
-	for (j = 0; j < i; j++) {
-		c = &ic->ic_channels[j];
-		if (c->ic_freq == freq && IEEE80211_IS_CHAN_ANYG(c))
-			return c;
-	}
-	return NULL;
-}
-static const u_int chanflags[] = {
-	IEEE80211_CHAN_B,	/* IEEE80211_MODE_AUTO */
-	IEEE80211_CHAN_A,	/* IEEE80211_MODE_11A */
-	IEEE80211_CHAN_B,	/* IEEE80211_MODE_11B */
-	IEEE80211_CHAN_PUREG,	/* IEEE80211_MODE_11G */
-	IEEE80211_CHAN_FHSS,	/* IEEE80211_MODE_FH */
-	IEEE80211_CHAN_A,	/* IEEE80211_MODE_TURBO_A */ /* for turbo mode look for AP in normal channel */
-	IEEE80211_CHAN_PUREG,	/* IEEE80211_MODE_TURBO_G */
-	IEEE80211_CHAN_ST,	/* IEEE80211_MODE_TURBO_STATIC_A */
-};
-
-static void
-add_channels(struct ieee80211com *ic,
-	struct ieee80211_scan_state *ss,
-	enum ieee80211_phymode mode, const u_int16_t freq[], int nfreq)
-{
-	struct ieee80211_channel *c, *cg;
-	u_int modeflags;
-	int i;
-
-	KASSERT(mode < ARRAY_SIZE(chanflags), ("Unexpected mode %u", mode));
-	modeflags = chanflags[mode];
-	for (i = 0; i < nfreq; i++) {
-		c = ieee80211_find_channel(ic, freq[i], modeflags);
-		if (c == NULL || isclr(ic->ic_chan_active, c->ic_ieee))
-			continue;
-		if (mode == IEEE80211_MODE_AUTO) {
-			/*
-			 * XXX special-case 11b/g channels so we select
-			 *     the g channel if both are present.
-			 */
-			if (IEEE80211_IS_CHAN_B(c) &&
-			    (cg = find11gchannel(ic, i, c->ic_freq)) != NULL)
-				c = cg;
-		}
-		if (ss->ss_last >= IEEE80211_SCAN_MAX)
-			break;
-		ss->ss_chans[ss->ss_last++] = c;
-	}
-}
-
-static const u_int16_t rcl1[] =		/* 8 FCC channel: 52, 56, 60, 64, 36, 40, 44, 48 */
-{ 5260, 5280, 5300, 5320, 5180, 5200, 5220, 5240 };
-static const u_int16_t rcl2[] =		/* 4 MKK channels: 34, 38, 42, 46 */
-{ 5170, 5190, 5210, 5230 };
-static const u_int16_t rcl3[] =		/* 2.4Ghz ch: 1,6,11,7,13 */
-{ 2412, 2437, 2462, 2442, 2472 };
-static const u_int16_t rcl4[] =		/* 5 FCC channel: 149, 153, 161, 165 */
-{ 5745, 5765, 5785, 5805, 5825 };
-static const u_int16_t rcl7[] =		/* 11 ETSI channel: 100,104,108,112,116,120,124,128,132,136,140 */
-{ 5500, 5520, 5540, 5560, 5580, 5600, 5620, 5640, 5660, 5680, 5700 };
-static const u_int16_t rcl8[] =		/* 2.4Ghz ch: 2,3,4,5,8,9,10,12 */
-{ 2417, 2422, 2427, 2432, 2447, 2452, 2457, 2467 };
-static const u_int16_t rcl9[] =		/* 2.4Ghz ch: 14 */
-{ 2484 };
-static const u_int16_t rcl10[] =	/* Added Korean channels 2312-2372 */
-{ 2312, 2317, 2322, 2327, 2332, 2337, 2342, 2347, 2352, 2357, 2362, 2367, 2372 };
-static const u_int16_t rcl11[] =	/* Added Japan channels in 4.9/5.0 spectrum */
-{ 5040, 5060, 5080, 4920, 4940, 4960, 4980 };
-#ifdef ATH_TURBO_SCAN
-static const u_int16_t rcl5[] =		/* 3 static turbo channels */
-{ 5210, 5250, 5290 };
-static const u_int16_t rcl6[] =		/* 2 static turbo channels */
-{ 5760, 5800 };
-static const u_int16_t rcl6x[] =		/* 4 FCC3 turbo channels */
-{ 5540, 5580, 5620, 5660 };
-static const u_int16_t rcl12[] =		/* 2.4Ghz Turbo channel 6 */
-{ 2437 };
-static const u_int16_t rcl13[] =		/* dynamic Turbo channels */
-{ 5200, 5240, 5280, 5765, 5805 };
-#endif /* ATH_TURBO_SCAN */
-
-struct scanlist {
-	u_int16_t	mode;
-	u_int16_t	count;
-	const u_int16_t	*list;
-};
-
-#define	IEEE80211_MODE_TURBO_STATIC_A	IEEE80211_MODE_MAX
-#define	X(a)	.count = sizeof(a)/sizeof(a[0]), .list = a
-
-static const struct scanlist staScanTable[] = {
-	{ IEEE80211_MODE_11B,   		X(rcl3) },
-	{ IEEE80211_MODE_11A,   		X(rcl1) },
-	{ IEEE80211_MODE_11A,   		X(rcl2) },
-	{ IEEE80211_MODE_11B,   		X(rcl8) },
-	{ IEEE80211_MODE_11B,   		X(rcl9) },
-	{ IEEE80211_MODE_11A,   		X(rcl4) },
-#ifdef ATH_TURBO_SCAN
-	{ IEEE80211_MODE_TURBO_STATIC_A,	X(rcl5) },
-	{ IEEE80211_MODE_TURBO_STATIC_A,	X(rcl6) },
-	{ IEEE80211_MODE_TURBO_A,		X(rcl6x) },
-	{ IEEE80211_MODE_TURBO_A,		X(rcl13) },
-#endif /* ATH_TURBO_SCAN */
-	{ IEEE80211_MODE_11A,			X(rcl7) },
-	{ IEEE80211_MODE_11B,			X(rcl10) },
-	{ IEEE80211_MODE_11A,			X(rcl11) },
-#ifdef ATH_TURBO_SCAN
-	{ IEEE80211_MODE_TURBO_G,		X(rcl12) },
-#endif /* ATH_TURBO_SCAN */
-	{ .list = NULL }
-};
-
-#undef X
-
-static int
-checktable(const struct scanlist *scan, const struct ieee80211_channel *c)
-{
-	int i;
-
-	for (; scan->list != NULL; scan++) {
-		for (i = 0; i < scan->count; i++)
-			if (scan->list[i] == c->ic_freq)
-				return 1;
-	}
-	return 0;
-}
-
 /*
  * Start a station-mode scan by populating the channel list.
  */
@@ -466,81 +325,14 @@
 {
 	struct ieee80211com *ic = vap->iv_ic;
 	struct sta_table *st = ss->ss_priv;
-	const struct scanlist *scan;
 	enum ieee80211_phymode mode;
 	struct ieee80211_channel *c;
 	int i;
 
 	ss->ss_last = 0;
-	/*
-	 * Use the table of ordered channels to construct the list
-	 * of channels for scanning.  Any channels in the ordered
-	 * list not in the master list will be discarded.
-	 */
-	for (scan = staScanTable; scan->list != NULL; scan++) {
-		mode = scan->mode;
-		if (vap->iv_des_mode != IEEE80211_MODE_AUTO) {
-			/*
-			 * If a desired mode was specified, scan only 
-			 * channels that satisfy that constraint.
-			 */
-			if (vap->iv_des_mode != mode) {
-				/*
-				 * The scan table marks 2.4Ghz channels as b
-				 * so if the desired mode is 11g, then use
-				 * the 11b channel list but upgrade the mode.
-				 */
-				if (vap->iv_des_mode != IEEE80211_MODE_11G ||
-				    mode != IEEE80211_MODE_11B)
-					continue;
-				mode = IEEE80211_MODE_11G;	/* upgrade */
-			}
-		} else {
-			/*
-			 * This lets ieee80211_scan_add_channels
-			 * upgrade an 11b channel to 11g if available.
-			 */
-			if (mode == IEEE80211_MODE_11B)
-				mode = IEEE80211_MODE_AUTO;
-		}
-		/* XR does not operate on turbo channels */
-		if ((vap->iv_flags & IEEE80211_F_XR) &&
-		    (mode == IEEE80211_MODE_TURBO_A ||
-		     mode == IEEE80211_MODE_TURBO_G))
-			continue;
-		/*
-		 * Add the list of the channels; any that are not
-		 * in the master channel list will be discarded.
-		 */
-		add_channels(ic, ss, mode, scan->list, scan->count);
-	}
-
-	/*
-	 * Add the channels from the ic (from HAL) that are not present
-	 * in the staScanTable.
-	 */
-	for (i = 0; i < ic->ic_nchans; i++) {
-		c = &ic->ic_channels[i];
-		/*
-		 * scan dynamic turbo channels in normal mode.
-		 */
-		if (IEEE80211_IS_CHAN_DTURBO(c))
-			continue;
-		mode = ieee80211_chan2mode(c);
-		if (vap->iv_des_mode != IEEE80211_MODE_AUTO) {
-			/*
-			 * If a desired mode was specified, scan only 
-			 * channels that satisfy that constraint.
-			 */
-			if (vap->iv_des_mode != mode)
-				continue;
-
-		}
-		if (!checktable(staScanTable, c))
-			ss->ss_chans[ss->ss_last++] = c;
-	}
-
+	ieee80211_scan_add_channels(ic, ss, vap->iv_des_mode);
 	ss->ss_next = 0;
+
 	/* XXX tunables */
 	/* 
 	 * The scanner will stay on station for ss_maxdwell ms (using a 
@@ -749,17 +541,7 @@
 	fail = 0;
 	if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, se->se_chan)))
 		fail |= 0x01;
-	/*
-	 * NB: normally the desired mode is used to construct
-	 * the channel list, but it's possible for the scan
-	 * cache to include entries for stations outside this
-	 * list so we check the desired mode here to weed them
-	 * out.
-	 */
-	if (vap->iv_des_mode != IEEE80211_MODE_AUTO &&
-	    (se->se_chan->ic_flags & IEEE80211_CHAN_ALLTURBO) !=
-	    chanflags[vap->iv_des_mode])
-		fail |= 0x01;
+
 	if (vap->iv_opmode == IEEE80211_M_IBSS) {
 		if ((se->se_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
 			fail |= 0x02;
@@ -1168,78 +950,6 @@
 	.scan_default		= ieee80211_sta_join,
 };
 
-/*
- * Start an adhoc-mode scan by populating the channel list.
- */
-static int
-adhoc_start(struct ieee80211_scan_state *ss, struct ieee80211vap *vap)
-{
-	struct ieee80211com *ic = vap->iv_ic;
-	struct sta_table *st = ss->ss_priv;
-	const struct scanlist *scan;
-	enum ieee80211_phymode mode;
-
-	ss->ss_last = 0;
-	/*
-	 * Use the table of ordered channels to construct the list
-	 * of channels for scanning.  Any channels in the ordered
-	 * list not in the master list will be discarded.
-	 */
-	for (scan = staScanTable; scan->list != NULL; scan++) {
-		mode = scan->mode;
-		if (vap->iv_des_mode != IEEE80211_MODE_AUTO) {
-			/*
-			 * If a desired mode was specified, scan only 
-			 * channels that satisfy that constraint.
-			 */
-			if (vap->iv_des_mode != mode) {
-				/*
-				 * The scan table marks 2.4Ghz channels as b
-				 * so if the desired mode is 11g, then use
-				 * the 11b channel list but upgrade the mode.
-				 */
-				if (vap->iv_des_mode != IEEE80211_MODE_11G ||
-				    mode != IEEE80211_MODE_11B)
-					continue;
-				mode = IEEE80211_MODE_11G;	/* upgrade */
-			}
-		} else {
-			/*
-			 * This lets ieee80211_scan_add_channels
-			 * upgrade an 11b channel to 11g if available.
-			 */
-			if (mode == IEEE80211_MODE_11B)
-				mode = IEEE80211_MODE_AUTO;
-		}
-		/* XR does not operate on turbo channels */
-		if ((vap->iv_flags & IEEE80211_F_XR) &&
-		    (mode == IEEE80211_MODE_TURBO_A ||
-		     mode == IEEE80211_MODE_TURBO_G))
-			continue;
-		/*
-		 * Add the list of the channels; any that are not
-		 * in the master channel list will be discarded.
-		 */
-		add_channels(ic, ss, mode, scan->list, scan->count);
-	}
-	ss->ss_next = 0;
-	/* XXX tunables */
-	ss->ss_mindwell = msecs_to_jiffies(200);	/* 200ms */
-	ss->ss_maxdwell = msecs_to_jiffies(200);	/* 200ms */
-
-#ifdef IEEE80211_DEBUG
-	if (ieee80211_msg_scan(vap)) {
-		printk("%s: scan set ", vap->iv_dev->name);
-		ieee80211_scan_dump_channels(ss);
-		printk(" dwell min %ld max %ld\n",
-			ss->ss_mindwell, ss->ss_maxdwell);
-	}
-#endif /* IEEE80211_DEBUG */
-
-	st->st_newscan = 1;
-
-	return 0;
-}
 
 /*
  * Select a channel to start an adhoc network on.
@@ -1405,7 +1115,7 @@
 	.scan_name		= "default",
 	.scan_attach		= sta_attach,
 	.scan_detach		= sta_detach,
-	.scan_start		= adhoc_start,
+	.scan_start		= sta_start,
 	.scan_restart		= sta_restart,
 	.scan_cancel		= sta_cancel,
 	.scan_end		= adhoc_pick_bss,
--- a/net80211/ieee80211.c
+++ b/net80211/ieee80211.c
@@ -278,6 +278,11 @@
 			("channel with bogus ieee number %u", c->ic_ieee));
 		setbit(ic->ic_chan_avail, c->ic_ieee);
 
+		if (c->ic_scanflags & IEEE80211_NOSCAN_DEFAULT)
+			c->ic_scanflags |= IEEE80211_NOSCAN_SET;
+		else
+			c->ic_scanflags &= ~IEEE80211_NOSCAN_SET;
+
 		/* Identify mode capabilities. */
 		if (IEEE80211_IS_CHAN_A(c))
 			ic->ic_modecaps |= 1 << IEEE80211_MODE_11A;
--- a/net80211/_ieee80211.h
+++ b/net80211/_ieee80211.h
@@ -132,6 +132,11 @@
 	IEEE80211_SCAN_FIRST	= 2,	/* take first suitable candidate */
 };
 
+enum ieee80211_scanflags {
+	IEEE80211_NOSCAN_DEFAULT = (1 << 0),
+	IEEE80211_NOSCAN_SET     = (1 << 1),
+};
+
 /*
  * Channels are specified by frequency and attributes.
  */
@@ -142,6 +147,7 @@
 	int8_t ic_maxregpower;	/* maximum regulatory tx power in dBm */
 	int8_t ic_maxpower;	/* maximum tx power in dBm */
 	int8_t ic_minpower;	/* minimum tx power in dBm */
+	u_int8_t ic_scanflags;
 };
 
 #define	IEEE80211_CHAN_MAX	255
--- a/net80211/ieee80211_ioctl.h
+++ b/net80211/ieee80211_ioctl.h
@@ -555,6 +555,7 @@
 #define	IEEE80211_IOCTL_WDSADDMAC	(SIOCIWFIRSTPRIV+26)
 #define	IEEE80211_IOCTL_WDSDELMAC	(SIOCIWFIRSTPRIV+28)
 #define	IEEE80211_IOCTL_KICKMAC		(SIOCIWFIRSTPRIV+30)
+#define	IEEE80211_IOCTL_SETSCANLIST	(SIOCIWFIRSTPRIV+31)
 
 enum {
 	IEEE80211_WMMPARAMS_CWMIN       = 1,
--- a/net80211/ieee80211_scan_ap.c
+++ b/net80211/ieee80211_scan_ap.c
@@ -129,131 +129,7 @@
 
 static int ap_flush(struct ieee80211_scan_state *);
 static void action_tasklet(IEEE80211_TQUEUE_ARG);
-static struct ieee80211_channel *find11gchannel(struct ieee80211com *ic, 
-		int i, int freq);
 
-static const u_int chanflags[] = {
-	IEEE80211_CHAN_B,	/* IEEE80211_MODE_AUTO */
-	IEEE80211_CHAN_A,	/* IEEE80211_MODE_11A */
-	IEEE80211_CHAN_B,	/* IEEE80211_MODE_11B */
-	IEEE80211_CHAN_PUREG,	/* IEEE80211_MODE_11G */
-	IEEE80211_CHAN_FHSS,	/* IEEE80211_MODE_FH */
-	IEEE80211_CHAN_A,	/* IEEE80211_MODE_TURBO_A */ /* for turbo mode 
-							      * look for AP in 
-							      * normal channel 
-							      */
-	IEEE80211_CHAN_PUREG,	/* IEEE80211_MODE_TURBO_G */
-	IEEE80211_CHAN_ST,	/* IEEE80211_MODE_TURBO_STATIC_A */
-};
-
-static const u_int16_t rcl1[] =		/* 8 FCC channel: 52, 56, 60, 64, 
-					 *                36, 40, 44, 48 */
-{ 5260, 5280, 5300, 5320, 5180, 5200, 5220, 5240 };
-static const u_int16_t rcl2[] =		/* 4 MKK channels: 34, 38, 42, 46 */
-{ 5170, 5190, 5210, 5230 };
-static const u_int16_t rcl3[] =		/* 2.4Ghz ch: 1,6,11,7,13 */
-{ 2412, 2437, 2462, 2442, 2472 };
-static const u_int16_t rcl4[] =		/* 5 FCC channel: 149, 153, 161, 165 */
-{ 5745, 5765, 5785, 5805, 5825 };
-static const u_int16_t rcl7[] =		/* 11 ETSI channel: 100, 104, 108, 112,
-					 *                  116, 120, 124, 128, 
-					 *                  132, 136, 140 */
-{ 5500, 5520, 5540, 5560, 5580, 5600, 5620, 5640, 5660, 5680, 5700 };
-static const u_int16_t rcl8[] =		/* 2.4Ghz ch: 2,3,4,5,8,9,10,12 */
-{ 2417, 2422, 2427, 2432, 2447, 2452, 2457, 2467 };
-static const u_int16_t rcl9[] =		/* 2.4Ghz ch: 14 */
-{ 2484 };
-static const u_int16_t rcl10[] =	/* Added Korean channels 2312-2372 */
-{ 2312, 2317, 2322, 2327, 2332, 2337, 2342, 2347, 2352, 2357, 2362, 2367, 2372 };
-static const u_int16_t rcl11[] =	/* Added Japan channels in 4.9/5.0 spectrum */
-{ 5040, 5060, 5080, 4920, 4940, 4960, 4980 };
-#ifdef ATH_TURBO_SCAN
-static const u_int16_t rcl5[] =		/* 3 static turbo channels */
-{ 5210, 5250, 5290 };
-static const u_int16_t rcl6[] =		/* 2 static turbo channels */
-{ 5760, 5800 };
-static const u_int16_t rcl6x[] =		/* 4 FCC3 turbo channels */
-{ 5540, 5580, 5620, 5660 };
-static const u_int16_t rcl12[] =		/* 2.4Ghz Turbo channel 6 */
-{ 2437 };
-static const u_int16_t rcl13[] =		/* dynamic Turbo channels */
-{ 5200, 5240, 5280, 5765, 5805 };
-#endif /* ATH_TURBO_SCAN */
-
-struct scanlist {
-	u_int16_t	mode;
-	u_int16_t	count;
-	const u_int16_t	*list;
-};
-
-#define	IEEE80211_MODE_TURBO_STATIC_A	IEEE80211_MODE_MAX
-#define	X(a)	.count = ARRAY_SIZE(a), .list = a
-
-static const struct scanlist staScanTable[] = {
-	{ IEEE80211_MODE_11B,   		X(rcl3)  },
-	{ IEEE80211_MODE_11A,   		X(rcl1)  },
-	{ IEEE80211_MODE_11A,   		X(rcl2)  },
-	{ IEEE80211_MODE_11B,   		X(rcl8)  },
-	{ IEEE80211_MODE_11B,   		X(rcl9)  },
-	{ IEEE80211_MODE_11A,   		X(rcl4)  },
-#ifdef ATH_TURBO_SCAN
-	{ IEEE80211_MODE_TURBO_STATIC_A,	X(rcl5)  },
-	{ IEEE80211_MODE_TURBO_STATIC_A,	X(rcl6)  },
-	{ IEEE80211_MODE_TURBO_A,		X(rcl6x) },
-	{ IEEE80211_MODE_TURBO_A,		X(rcl13) },
-#endif /* ATH_TURBO_SCAN */
-	{ IEEE80211_MODE_11A,			X(rcl7)  },
-	{ IEEE80211_MODE_11B,			X(rcl10) },
-	{ IEEE80211_MODE_11A,			X(rcl11) },
-#ifdef ATH_TURBO_SCAN
-	{ IEEE80211_MODE_TURBO_G,		X(rcl12) },
-#endif /* ATH_TURBO_SCAN */
-	{ .list = NULL }
-};
-
-#undef X
-/* This function must be invoked with locks acquired */
-static void
-add_channels(struct ieee80211com *ic,
-	struct ieee80211_scan_state *ss,
-	enum ieee80211_phymode mode, const u_int16_t freq[], int nfreq)
-{
-	struct ieee80211_channel *c, *cg;
-	u_int modeflags;
-	int i;
-
-	KASSERT(mode < ARRAY_SIZE(chanflags), ("Unexpected mode %u", mode));
-	modeflags = chanflags[mode];
-	for (i = 0; i < nfreq; i++) {
-		c = ieee80211_find_channel(ic, freq[i], modeflags);
-		if ((c == NULL) || isclr(ic->ic_chan_active, c->ic_ieee))
-			continue;
-		if (mode == IEEE80211_MODE_AUTO) {
-			/* XXX special-case 11b/g channels so we select
-			 *     the g channel if both are present. */
-			if (IEEE80211_IS_CHAN_B(c) &&
-			    (cg = find11gchannel(ic, i, c->ic_freq)) != NULL)
-				c = cg;
-		}
-		if (ss->ss_last >= IEEE80211_SCAN_MAX)
-			break;
-		ss->ss_chans[ss->ss_last++] = c;
-	}
-}
-
-/* This function must be invoked with locks acquired */
-static int
-checktable(const struct scanlist *scan, const struct ieee80211_channel *c)
-{
-	int i;
-
-	for (; scan->list != NULL; scan++) {
-		for (i = 0; i < scan->count; i++)
-			if (scan->list[i] == c->ic_freq)
-				return 1;
-	}
-	return 0;
-}
 
 /*
  * Attach prior to any scanning work.
@@ -327,29 +203,6 @@
 		ieee80211_saveie(iep, ie);
 }
 
-/* This function must be invoked with locks acquired */
-static struct ieee80211_channel *
-find11gchannel(struct ieee80211com *ic, int i, int freq)
-{
-	struct ieee80211_channel *c;
-	int j;
-
-	/* The normal ordering in the channel list is b channel
-	 * immediately followed by g so optimize the search for
-	 * this.  We'll still do a full search just in case. */
-	for (j = i + 1; j < ic->ic_nchans; j++) {
-		c = &ic->ic_channels[j];
-		if ((c->ic_freq == freq) && IEEE80211_IS_CHAN_ANYG(c))
-			return c;
-	}
-	for (j = 0; j < i; j++) {
-		c = &ic->ic_channels[j];
-		if ((c->ic_freq == freq) && IEEE80211_IS_CHAN_ANYG(c))
-			return c;
-	}
-	return NULL;
-}
-
 /*
  * Start an ap scan by populating the channel list.
  */
@@ -358,8 +211,6 @@
 {
 	struct ap_state *as 	    = ss->ss_priv;
 	struct ieee80211com *ic     = NULL;
-	const struct scanlist *sl   = NULL;
-	struct ieee80211_channel *c = NULL;
 	int i;
 	unsigned int mode = 0;
 
@@ -368,80 +219,8 @@
 	/* Determine mode flags to match, or leave zero for auto mode */
 	as->as_vap_desired_mode = vap->iv_des_mode;
 	as->as_required_mode    = 0;
-	if (as->as_vap_desired_mode != IEEE80211_MODE_AUTO) {
-		as->as_required_mode = chanflags[as->as_vap_desired_mode];
-		if ((vap->iv_ath_cap & IEEE80211_ATHC_TURBOP) && 
-		    (as->as_required_mode != IEEE80211_CHAN_ST)) {
-			/* Fixup for dynamic turbo flags */
-			if (as->as_vap_desired_mode == IEEE80211_MODE_11G)
-				as->as_required_mode = IEEE80211_CHAN_108G;
-			else
-				as->as_required_mode = IEEE80211_CHAN_108A;
-		}
-	}
-
-	ss->ss_last = 0;
-	/* Use the table of ordered channels to construct the list
-	 * of channels for scanning.  Any channels in the ordered
-	 * list not in the master list will be discarded. */
-	for (sl = staScanTable; sl->list != NULL; sl++) {
-		mode = sl->mode;
-
-		/* The scan table marks 2.4Ghz channels as b
-		 * so if the desired mode is 11g, then use
-		 * the 11b channel list but upgrade the mode. */
-		if (as->as_vap_desired_mode &&
-		    (as->as_vap_desired_mode != mode) && 
-		    (as->as_vap_desired_mode == IEEE80211_MODE_11G) && 
-		    (mode == IEEE80211_MODE_11B))
-			mode = IEEE80211_MODE_11G;
-
-		/* If we are in "AUTO" mode, upgrade the mode to auto. 
-		 * This lets add_channels upgrade an 11b channel to 
-		 * 11g if available. */
-		if (!as->as_vap_desired_mode && (mode == IEEE80211_MODE_11B))
-			mode = IEEE80211_MODE_AUTO;
-
-		/* Add the list of the channels; any that are not
-		 * in the master channel list will be discarded. */
-		add_channels(ic, ss, mode, sl->list, sl->count);
-	}
-
-	/* Add the channels from the ic (from HAL) that are not present
-	 * in the staScanTable, assuming they pass the sanity checks... */
-	for (i = 0; i < ic->ic_nchans; i++) {
-		c = &ic->ic_channels[i];
-
-		/* XR is not supported on turbo channels */
-		if (IEEE80211_IS_CHAN_TURBO(c) && vap->iv_flags & IEEE80211_F_XR)
-			continue;
+	ieee80211_scan_add_channels(ic, ss, vap->iv_des_mode);
 
-		/* Dynamic channels are scanned in base mode */
-		if (!as->as_required_mode && !IEEE80211_IS_CHAN_ST(c))
-			continue;
-
-		/* Use any 11g channel instead of 11b one. */
-		if (vap->iv_des_mode == IEEE80211_MODE_AUTO && 
-		    IEEE80211_IS_CHAN_B(c) &&
-		    find11gchannel(ic, i, c->ic_freq))
-			continue;
-
-		/* Do not add channels already put into the scan list by the
-		 * scan table - these have already been filtered by mode
-		 * and for whether they are in the active channel list. */
-		if (checktable(staScanTable, c))
-			continue;
-
-		/* Make sure the channel is active */
-		if ((c == NULL) || isclr(ic->ic_chan_active, c->ic_ieee))
-			continue;
-
-		/* Don't overrun */
-		if (ss->ss_last >= IEEE80211_SCAN_MAX)
-			break;
-
-		ss->ss_chans[ss->ss_last++] = c;
-	}
 	ss->ss_next = 0;
 	/* XXX tunables */
 	ss->ss_mindwell = msecs_to_jiffies(200);	/* 200ms */
@@ -759,13 +538,6 @@
 		if (IEEE80211_IS_CHAN_RADAR(c->chan))
 			continue;
 
-		/* Do not select 802.11a ST if mode is specified and is not 
-		 * 802.11a ST */
-		if (as->as_required_mode &&
-		    IEEE80211_IS_CHAN_STURBO(c->chan) &&
-		    (as->as_vap_desired_mode != IEEE80211_MODE_TURBO_STATIC_A))
-			continue;
-
 		/* Verify mode matches any fixed mode specified */
 		if((c->chan->ic_flags & as->as_required_mode) != 
 				as->as_required_mode)
--- a/net80211/ieee80211_scan.c
+++ b/net80211/ieee80211_scan.c
@@ -958,6 +958,80 @@
 	}
 }
 
+static const u_int chanflags[] = {
+	0,	/* IEEE80211_MODE_AUTO */
+	IEEE80211_CHAN_A,	/* IEEE80211_MODE_11A */
+	IEEE80211_CHAN_B,	/* IEEE80211_MODE_11B */
+	IEEE80211_CHAN_PUREG,	/* IEEE80211_MODE_11G */
+	IEEE80211_CHAN_FHSS,	/* IEEE80211_MODE_FH */
+	IEEE80211_CHAN_A,	/* IEEE80211_MODE_TURBO_A */ /* for turbo mode look for AP in normal channel */
+	IEEE80211_CHAN_PUREG,	/* IEEE80211_MODE_TURBO_G */
+	IEEE80211_CHAN_ST,	/* IEEE80211_MODE_TURBO_STATIC_A */
+};
+
+static struct ieee80211_channel *
+find11gchannel(struct ieee80211com *ic, int i, int freq)
+{
+	struct ieee80211_channel *c;
+	int j;
+
+	/*
+	 * The normal ordering in the channel list is b channel
+	 * immediately followed by g so optimize the search for
+	 * this.  We'll still do a full search just in case.
+	 */
+	for (j = i+1; j < ic->ic_nchans; j++) {
+		c = &ic->ic_channels[j];
+		if (c->ic_freq == freq && IEEE80211_IS_CHAN_ANYG(c))
+			return c;
+	}
+	for (j = 0; j < i; j++) {
+		c = &ic->ic_channels[j];
+		if (c->ic_freq == freq && IEEE80211_IS_CHAN_ANYG(c))
+			return c;
+	}
+	return NULL;
+}
+
+
+void
+ieee80211_scan_add_channels(struct ieee80211com *ic,
+	struct ieee80211_scan_state *ss,
+	enum ieee80211_phymode mode)
+{
+	struct ieee80211_channel *c, *cg;
+	u_int modeflags;
+	int i;
+
+	KASSERT(mode < ARRAY_SIZE(chanflags), ("Unexpected mode %u", mode));
+	modeflags = chanflags[mode];
+	for (i = 0; i < ic->ic_nchans; i++) {
+		c = &ic->ic_channels[i];
+		if (c == NULL || isclr(ic->ic_chan_active, c->ic_ieee))
+			continue;
+		if (c->ic_scanflags & IEEE80211_NOSCAN_SET)
+			continue;
+		if (modeflags &&
+			((c->ic_flags & IEEE80211_CHAN_ALLTURBO) !=
+			 (modeflags & IEEE80211_CHAN_ALLTURBO)))
+			continue;
+		if (mode == IEEE80211_MODE_AUTO) {
+			/*
+			 * XXX special-case 11b/g channels so we select
+			 *     the g channel if both are present.
+			 */
+			if (IEEE80211_IS_CHAN_B(c) &&
+			    (cg = find11gchannel(ic, i, c->ic_freq)) != NULL)
+				continue;
+		}
+		if (ss->ss_last >= IEEE80211_SCAN_MAX)
+			break;
+		ss->ss_chans[ss->ss_last++] = c;
+	}
+}
+EXPORT_SYMBOL(ieee80211_scan_add_channels);
+
+
 /*
  * Execute radar channel change. This is called when a radar/dfs
  * signal is detected.  AP mode only.  Return 1 on success, 0 on
--- a/net80211/ieee80211_scan.h
+++ b/net80211/ieee80211_scan.h
@@ -219,4 +219,7 @@
 void ieee80211_scanner_unregister(enum ieee80211_opmode,
 	const struct ieee80211_scanner *);
 void ieee80211_scanner_unregister_all(const struct ieee80211_scanner *);
+void ieee80211_scan_add_channels(struct ieee80211com *ic,
+	struct ieee80211_scan_state *ss,
+	enum ieee80211_phymode mode);
 #endif /* _NET80211_IEEE80211_SCAN_H_ */
--- a/net80211/ieee80211_wireless.c
+++ b/net80211/ieee80211_wireless.c
@@ -3873,6 +3873,106 @@
 	return ieee80211_ioctl_setmlme(dev, info, w, (char *)&mlme);
 }
 
+static inline void setflag(struct ieee80211_channel *c, int flag)
+{
+	if (flag)
+		c->ic_scanflags |= IEEE80211_NOSCAN_SET;
+	else
+		c->ic_scanflags &= ~IEEE80211_NOSCAN_SET;
+}
+
+static void setscanflag(struct ieee80211com *ic, int min, int max, int set)
+{
+	int i;
+
+	for (i = 0; i < ic->ic_nchans; i++) {
+		struct ieee80211_channel *c = &ic->ic_channels[i];
+
+		if (min == -1) {
+			if (!(c->ic_scanflags & IEEE80211_NOSCAN_DEFAULT))
+				setflag(c, set);
+		} else if ((c->ic_freq >= min) && (c->ic_freq <= max)) {
+			setflag(c, set);
+		}
+	}
+}
+
+static int
+ieee80211_ioctl_setscanlist(struct net_device *dev,
+	struct iw_request_info *info,
+	struct iw_point *data, char *extra)
+{
+	struct ieee80211vap *vap = dev->priv;
+	struct ieee80211com *ic = vap->iv_ic;
+	char *s, *next;
+	int val = 1;
+
+	if (data->length <= 0)
+		return -EINVAL;
+
+	s = kmalloc(data->length + 1, GFP_KERNEL);
+	if (!s)
+		return -ENOMEM;
+
+	memset(s, 0, data->length + 1);
+	if (copy_from_user(s, data->pointer, data->length))
+		return -EFAULT;
+
+	s[data->length - 1] = '\0';		/* ensure null termination */
+
+	switch(*s) {
+		case '-':
+			val = 1;
+			break;
+		case '+':
+			val = 0;
+			break;
+		default:
+			goto error;
+	}
+	s++;
+	next = s;
+	do {
+		next = strchr(s, ',');
+		if (next) {
+			*next = 0;
+			next++;
+		}
+		if (!strcmp(s, "ALL")) {
+			setscanflag(ic, 0, 10000, val);
+		} else if (!strcmp(s, "REG")) {
+			setscanflag(ic, -1, -1, val);
+		} else {
+			int min, max;
+			char *n, *end = NULL;
+
+			n = strchr(s, '-');
+			if (n) {
+				*n = 0;
+				n++;
+			}
+			min = simple_strtoul(s, &end, 10);
+			if (end && *end)
+				goto error;
+			if (n) {
+				max = simple_strtoul(n, &end, 10);
+				if (end && *end)
+					goto error;
+			} else {
+				max = min;
+			}
+			setscanflag(ic, min, max, val);
+		}
+		s = next;
+	} while (next);
+	return 0;
+
+error:
+	if (s)
+		kfree(s);
+	return -EINVAL;
+}
+
 static int
 ieee80211_ioctl_addmac(struct net_device *dev, struct iw_request_info *info,
 	void *w, char *extra)
@@ -5656,6 +5756,8 @@
 	 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "minrate"},
 	{IEEE80211_PARAM_MINRATE,
 	 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_minrate"},
+	{ IEEE80211_IOCTL_SETSCANLIST,
+	 IW_PRIV_TYPE_CHAR | 255, 0, "setscanlist"},
 
 #ifdef ATH_REVERSE_ENGINEERING
 	/*
@@ -5753,6 +5855,7 @@
 	set_priv(IEEE80211_IOCTL_WDSADDMAC, ieee80211_ioctl_wdsmac),
 	set_priv(IEEE80211_IOCTL_WDSDELMAC, ieee80211_ioctl_wdsdelmac),
 	set_priv(IEEE80211_IOCTL_KICKMAC, ieee80211_ioctl_kickmac),
+	set_priv(IEEE80211_IOCTL_SETSCANLIST, ieee80211_ioctl_setscanlist),
 #ifdef ATH_REVERSE_ENGINEERING
 	set_priv(IEEE80211_IOCTL_READREG, ieee80211_ioctl_readreg),
 	set_priv(IEEE80211_IOCTL_WRITEREG, ieee80211_ioctl_writereg),