Root/package/madwifi/patches/351-scanlist.patch

1--- a/net80211/ieee80211_scan_sta.c
2+++ b/net80211/ieee80211_scan_sta.c
3@@ -317,147 +317,6 @@ found:
4 #undef ISPROBE
5 }
6 
7-static struct ieee80211_channel *
8-find11gchannel(struct ieee80211com *ic, int i, int freq)
9-{
10- struct ieee80211_channel *c;
11- int j;
12-
13- /*
14- * The normal ordering in the channel list is b channel
15- * immediately followed by g so optimize the search for
16- * this. We'll still do a full search just in case.
17- */
18- for (j = i+1; j < ic->ic_nchans; j++) {
19- c = &ic->ic_channels[j];
20- if (c->ic_freq == freq && IEEE80211_IS_CHAN_ANYG(c))
21- return c;
22- }
23- for (j = 0; j < i; j++) {
24- c = &ic->ic_channels[j];
25- if (c->ic_freq == freq && IEEE80211_IS_CHAN_ANYG(c))
26- return c;
27- }
28- return NULL;
29-}
30-static const u_int chanflags[] = {
31- IEEE80211_CHAN_B, /* IEEE80211_MODE_AUTO */
32- IEEE80211_CHAN_A, /* IEEE80211_MODE_11A */
33- IEEE80211_CHAN_B, /* IEEE80211_MODE_11B */
34- IEEE80211_CHAN_PUREG, /* IEEE80211_MODE_11G */
35- IEEE80211_CHAN_FHSS, /* IEEE80211_MODE_FH */
36- IEEE80211_CHAN_A, /* IEEE80211_MODE_TURBO_A */ /* for turbo mode look for AP in normal channel */
37- IEEE80211_CHAN_PUREG, /* IEEE80211_MODE_TURBO_G */
38- IEEE80211_CHAN_ST, /* IEEE80211_MODE_TURBO_STATIC_A */
39-};
40-
41-static void
42-add_channels(struct ieee80211com *ic,
43- struct ieee80211_scan_state *ss,
44- enum ieee80211_phymode mode, const u_int16_t freq[], int nfreq)
45-{
46- struct ieee80211_channel *c, *cg;
47- u_int modeflags;
48- int i;
49-
50- KASSERT(mode < ARRAY_SIZE(chanflags), ("Unexpected mode %u", mode));
51- modeflags = chanflags[mode];
52- for (i = 0; i < nfreq; i++) {
53- c = ieee80211_find_channel(ic, freq[i], modeflags);
54- if (c == NULL || isclr(ic->ic_chan_active, c->ic_ieee))
55- continue;
56- if (mode == IEEE80211_MODE_AUTO) {
57- /*
58- * XXX special-case 11b/g channels so we select
59- * the g channel if both are present.
60- */
61- if (IEEE80211_IS_CHAN_B(c) &&
62- (cg = find11gchannel(ic, i, c->ic_freq)) != NULL)
63- c = cg;
64- }
65- if (ss->ss_last >= IEEE80211_SCAN_MAX)
66- break;
67- ss->ss_chans[ss->ss_last++] = c;
68- }
69-}
70-
71-static const u_int16_t rcl1[] = /* 8 FCC channel: 52, 56, 60, 64, 36, 40, 44, 48 */
72-{ 5260, 5280, 5300, 5320, 5180, 5200, 5220, 5240 };
73-static const u_int16_t rcl2[] = /* 4 MKK channels: 34, 38, 42, 46 */
74-{ 5170, 5190, 5210, 5230 };
75-static const u_int16_t rcl3[] = /* 2.4Ghz ch: 1,6,11,7,13 */
76-{ 2412, 2437, 2462, 2442, 2472 };
77-static const u_int16_t rcl4[] = /* 5 FCC channel: 149, 153, 161, 165 */
78-{ 5745, 5765, 5785, 5805, 5825 };
79-static const u_int16_t rcl7[] = /* 11 ETSI channel: 100,104,108,112,116,120,124,128,132,136,140 */
80-{ 5500, 5520, 5540, 5560, 5580, 5600, 5620, 5640, 5660, 5680, 5700 };
81-static const u_int16_t rcl8[] = /* 2.4Ghz ch: 2,3,4,5,8,9,10,12 */
82-{ 2417, 2422, 2427, 2432, 2447, 2452, 2457, 2467 };
83-static const u_int16_t rcl9[] = /* 2.4Ghz ch: 14 */
84-{ 2484 };
85-static const u_int16_t rcl10[] = /* Added Korean channels 2312-2372 */
86-{ 2312, 2317, 2322, 2327, 2332, 2337, 2342, 2347, 2352, 2357, 2362, 2367, 2372 };
87-static const u_int16_t rcl11[] = /* Added Japan channels in 4.9/5.0 spectrum */
88-{ 5040, 5060, 5080, 4920, 4940, 4960, 4980 };
89-#ifdef ATH_TURBO_SCAN
90-static const u_int16_t rcl5[] = /* 3 static turbo channels */
91-{ 5210, 5250, 5290 };
92-static const u_int16_t rcl6[] = /* 2 static turbo channels */
93-{ 5760, 5800 };
94-static const u_int16_t rcl6x[] = /* 4 FCC3 turbo channels */
95-{ 5540, 5580, 5620, 5660 };
96-static const u_int16_t rcl12[] = /* 2.4Ghz Turbo channel 6 */
97-{ 2437 };
98-static const u_int16_t rcl13[] = /* dynamic Turbo channels */
99-{ 5200, 5240, 5280, 5765, 5805 };
100-#endif /* ATH_TURBO_SCAN */
101-
102-struct scanlist {
103- u_int16_t mode;
104- u_int16_t count;
105- const u_int16_t *list;
106-};
107-
108-#define IEEE80211_MODE_TURBO_STATIC_A IEEE80211_MODE_MAX
109-#define X(a) .count = sizeof(a)/sizeof(a[0]), .list = a
110-
111-static const struct scanlist staScanTable[] = {
112- { IEEE80211_MODE_11B, X(rcl3) },
113- { IEEE80211_MODE_11A, X(rcl1) },
114- { IEEE80211_MODE_11A, X(rcl2) },
115- { IEEE80211_MODE_11B, X(rcl8) },
116- { IEEE80211_MODE_11B, X(rcl9) },
117- { IEEE80211_MODE_11A, X(rcl4) },
118-#ifdef ATH_TURBO_SCAN
119- { IEEE80211_MODE_TURBO_STATIC_A, X(rcl5) },
120- { IEEE80211_MODE_TURBO_STATIC_A, X(rcl6) },
121- { IEEE80211_MODE_TURBO_A, X(rcl6x) },
122- { IEEE80211_MODE_TURBO_A, X(rcl13) },
123-#endif /* ATH_TURBO_SCAN */
124- { IEEE80211_MODE_11A, X(rcl7) },
125- { IEEE80211_MODE_11B, X(rcl10) },
126- { IEEE80211_MODE_11A, X(rcl11) },
127-#ifdef ATH_TURBO_SCAN
128- { IEEE80211_MODE_TURBO_G, X(rcl12) },
129-#endif /* ATH_TURBO_SCAN */
130- { .list = NULL }
131-};
132-
133-#undef X
134-
135-static int
136-checktable(const struct scanlist *scan, const struct ieee80211_channel *c)
137-{
138- int i;
139-
140- for (; scan->list != NULL; scan++) {
141- for (i = 0; i < scan->count; i++)
142- if (scan->list[i] == c->ic_freq)
143- return 1;
144- }
145- return 0;
146-}
147-
148 /*
149  * Start a station-mode scan by populating the channel list.
150  */
151@@ -466,81 +325,14 @@ sta_start(struct ieee80211_scan_state *s
152 {
153     struct ieee80211com *ic = vap->iv_ic;
154     struct sta_table *st = ss->ss_priv;
155- const struct scanlist *scan;
156     enum ieee80211_phymode mode;
157     struct ieee80211_channel *c;
158     int i;
159 
160     ss->ss_last = 0;
161- /*
162- * Use the table of ordered channels to construct the list
163- * of channels for scanning. Any channels in the ordered
164- * list not in the master list will be discarded.
165- */
166- for (scan = staScanTable; scan->list != NULL; scan++) {
167- mode = scan->mode;
168- if (vap->iv_des_mode != IEEE80211_MODE_AUTO) {
169- /*
170- * If a desired mode was specified, scan only
171- * channels that satisfy that constraint.
172- */
173- if (vap->iv_des_mode != mode) {
174- /*
175- * The scan table marks 2.4Ghz channels as b
176- * so if the desired mode is 11g, then use
177- * the 11b channel list but upgrade the mode.
178- */
179- if (vap->iv_des_mode != IEEE80211_MODE_11G ||
180- mode != IEEE80211_MODE_11B)
181- continue;
182- mode = IEEE80211_MODE_11G; /* upgrade */
183- }
184- } else {
185- /*
186- * This lets ieee80211_scan_add_channels
187- * upgrade an 11b channel to 11g if available.
188- */
189- if (mode == IEEE80211_MODE_11B)
190- mode = IEEE80211_MODE_AUTO;
191- }
192- /* XR does not operate on turbo channels */
193- if ((vap->iv_flags & IEEE80211_F_XR) &&
194- (mode == IEEE80211_MODE_TURBO_A ||
195- mode == IEEE80211_MODE_TURBO_G))
196- continue;
197- /*
198- * Add the list of the channels; any that are not
199- * in the master channel list will be discarded.
200- */
201- add_channels(ic, ss, mode, scan->list, scan->count);
202- }
203-
204- /*
205- * Add the channels from the ic (from HAL) that are not present
206- * in the staScanTable.
207- */
208- for (i = 0; i < ic->ic_nchans; i++) {
209- c = &ic->ic_channels[i];
210- /*
211- * scan dynamic turbo channels in normal mode.
212- */
213- if (IEEE80211_IS_CHAN_DTURBO(c))
214- continue;
215- mode = ieee80211_chan2mode(c);
216- if (vap->iv_des_mode != IEEE80211_MODE_AUTO) {
217- /*
218- * If a desired mode was specified, scan only
219- * channels that satisfy that constraint.
220- */
221- if (vap->iv_des_mode != mode)
222- continue;
223-
224- }
225- if (!checktable(staScanTable, c))
226- ss->ss_chans[ss->ss_last++] = c;
227- }
228-
229+ ieee80211_scan_add_channels(ic, ss, vap->iv_des_mode);
230     ss->ss_next = 0;
231+
232     /* XXX tunables */
233     /*
234      * The scanner will stay on station for ss_maxdwell ms (using a
235@@ -749,17 +541,7 @@ match_bss(struct ieee80211vap *vap,
236     fail = 0;
237     if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, se->se_chan)))
238         fail |= 0x01;
239- /*
240- * NB: normally the desired mode is used to construct
241- * the channel list, but it's possible for the scan
242- * cache to include entries for stations outside this
243- * list so we check the desired mode here to weed them
244- * out.
245- */
246- if (vap->iv_des_mode != IEEE80211_MODE_AUTO &&
247- (se->se_chan->ic_flags & IEEE80211_CHAN_ALLTURBO) !=
248- chanflags[vap->iv_des_mode])
249- fail |= 0x01;
250+
251     if (vap->iv_opmode == IEEE80211_M_IBSS) {
252         if ((se->se_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
253             fail |= 0x02;
254@@ -1168,78 +950,6 @@ static const struct ieee80211_scanner st
255     .scan_default = ieee80211_sta_join,
256 };
257 
258-/*
259- * Start an adhoc-mode scan by populating the channel list.
260- */
261-static int
262-adhoc_start(struct ieee80211_scan_state *ss, struct ieee80211vap *vap)
263-{
264- struct ieee80211com *ic = vap->iv_ic;
265- struct sta_table *st = ss->ss_priv;
266- const struct scanlist *scan;
267- enum ieee80211_phymode mode;
268-
269- ss->ss_last = 0;
270- /*
271- * Use the table of ordered channels to construct the list
272- * of channels for scanning. Any channels in the ordered
273- * list not in the master list will be discarded.
274- */
275- for (scan = staScanTable; scan->list != NULL; scan++) {
276- mode = scan->mode;
277- if (vap->iv_des_mode != IEEE80211_MODE_AUTO) {
278- /*
279- * If a desired mode was specified, scan only
280- * channels that satisfy that constraint.
281- */
282- if (vap->iv_des_mode != mode) {
283- /*
284- * The scan table marks 2.4Ghz channels as b
285- * so if the desired mode is 11g, then use
286- * the 11b channel list but upgrade the mode.
287- */
288- if (vap->iv_des_mode != IEEE80211_MODE_11G ||
289- mode != IEEE80211_MODE_11B)
290- continue;
291- mode = IEEE80211_MODE_11G; /* upgrade */
292- }
293- } else {
294- /*
295- * This lets ieee80211_scan_add_channels
296- * upgrade an 11b channel to 11g if available.
297- */
298- if (mode == IEEE80211_MODE_11B)
299- mode = IEEE80211_MODE_AUTO;
300- }
301- /* XR does not operate on turbo channels */
302- if ((vap->iv_flags & IEEE80211_F_XR) &&
303- (mode == IEEE80211_MODE_TURBO_A ||
304- mode == IEEE80211_MODE_TURBO_G))
305- continue;
306- /*
307- * Add the list of the channels; any that are not
308- * in the master channel list will be discarded.
309- */
310- add_channels(ic, ss, mode, scan->list, scan->count);
311- }
312- ss->ss_next = 0;
313- /* XXX tunables */
314- ss->ss_mindwell = msecs_to_jiffies(200); /* 200ms */
315- ss->ss_maxdwell = msecs_to_jiffies(200); /* 200ms */
316-
317-#ifdef IEEE80211_DEBUG
318- if (ieee80211_msg_scan(vap)) {
319- printk("%s: scan set ", vap->iv_dev->name);
320- ieee80211_scan_dump_channels(ss);
321- printk(" dwell min %ld max %ld\n",
322- ss->ss_mindwell, ss->ss_maxdwell);
323- }
324-#endif /* IEEE80211_DEBUG */
325-
326- st->st_newscan = 1;
327-
328- return 0;
329-}
330 
331 /*
332  * Select a channel to start an adhoc network on.
333@@ -1405,7 +1115,7 @@ static const struct ieee80211_scanner ad
334     .scan_name = "default",
335     .scan_attach = sta_attach,
336     .scan_detach = sta_detach,
337- .scan_start = adhoc_start,
338+ .scan_start = sta_start,
339     .scan_restart = sta_restart,
340     .scan_cancel = sta_cancel,
341     .scan_end = adhoc_pick_bss,
342--- a/net80211/ieee80211.c
343+++ b/net80211/ieee80211.c
344@@ -278,6 +278,11 @@ ieee80211_ifattach(struct ieee80211com *
345             ("channel with bogus ieee number %u", c->ic_ieee));
346         setbit(ic->ic_chan_avail, c->ic_ieee);
347 
348+ if (c->ic_scanflags & IEEE80211_NOSCAN_DEFAULT)
349+ c->ic_scanflags |= IEEE80211_NOSCAN_SET;
350+ else
351+ c->ic_scanflags &= ~IEEE80211_NOSCAN_SET;
352+
353         /* Identify mode capabilities. */
354         if (IEEE80211_IS_CHAN_A(c))
355             ic->ic_modecaps |= 1 << IEEE80211_MODE_11A;
356@@ -1447,10 +1452,6 @@ ieee80211_media_change(struct net_device
357         vap->iv_fixed_rate = newrate; /* fixed TX rate */
358         error = -ENETRESET;
359     }
360- if (vap->iv_des_mode != newmode) {
361- vap->iv_des_mode = newmode; /* desired PHY mode */
362- error = -ENETRESET;
363- }
364     return error;
365 }
366 EXPORT_SYMBOL(ieee80211_media_change);
367--- a/net80211/_ieee80211.h
368+++ b/net80211/_ieee80211.h
369@@ -132,6 +132,11 @@ enum ieee80211_scanmode {
370     IEEE80211_SCAN_FIRST = 2, /* take first suitable candidate */
371 };
372 
373+enum ieee80211_scanflags {
374+ IEEE80211_NOSCAN_DEFAULT = (1 << 0),
375+ IEEE80211_NOSCAN_SET = (1 << 1),
376+};
377+
378 /*
379  * Channels are specified by frequency and attributes.
380  */
381@@ -142,6 +147,7 @@ struct ieee80211_channel {
382     int8_t ic_maxregpower; /* maximum regulatory tx power in dBm */
383     int8_t ic_maxpower; /* maximum tx power in dBm */
384     int8_t ic_minpower; /* minimum tx power in dBm */
385+ u_int8_t ic_scanflags;
386 };
387 
388 #define IEEE80211_CHAN_MAX 255
389--- a/net80211/ieee80211_ioctl.h
390+++ b/net80211/ieee80211_ioctl.h
391@@ -555,6 +555,7 @@ struct ieee80211req_scan_result {
392 #define IEEE80211_IOCTL_WDSADDMAC (SIOCIWFIRSTPRIV+26)
393 #define IEEE80211_IOCTL_WDSDELMAC (SIOCIWFIRSTPRIV+28)
394 #define IEEE80211_IOCTL_KICKMAC (SIOCIWFIRSTPRIV+30)
395+#define IEEE80211_IOCTL_SETSCANLIST (SIOCIWFIRSTPRIV+31)
396 
397 enum {
398     IEEE80211_WMMPARAMS_CWMIN = 1,
399--- a/net80211/ieee80211_scan_ap.c
400+++ b/net80211/ieee80211_scan_ap.c
401@@ -105,11 +105,6 @@ struct scan_entry {
402 };
403 
404 struct ap_state {
405- unsigned int as_vap_desired_mode; /* Used for channel selection,
406- * vap->iv_des_mode */
407- unsigned int as_required_mode; /* Used for channel selection,
408- * filtered version of
409- * as_vap_desired_mode */
410     int as_maxrssi[IEEE80211_CHAN_MAX]; /* Used for channel selection */
411 
412     /* These fields are just for scan caching for returning responses to
413@@ -129,131 +124,7 @@ struct ap_state {
414 
415 static int ap_flush(struct ieee80211_scan_state *);
416 static void action_tasklet(IEEE80211_TQUEUE_ARG);
417-static struct ieee80211_channel *find11gchannel(struct ieee80211com *ic,
418- int i, int freq);
419 
420-static const u_int chanflags[] = {
421- IEEE80211_CHAN_B, /* IEEE80211_MODE_AUTO */
422- IEEE80211_CHAN_A, /* IEEE80211_MODE_11A */
423- IEEE80211_CHAN_B, /* IEEE80211_MODE_11B */
424- IEEE80211_CHAN_PUREG, /* IEEE80211_MODE_11G */
425- IEEE80211_CHAN_FHSS, /* IEEE80211_MODE_FH */
426- IEEE80211_CHAN_A, /* IEEE80211_MODE_TURBO_A */ /* for turbo mode
427- * look for AP in
428- * normal channel
429- */
430- IEEE80211_CHAN_PUREG, /* IEEE80211_MODE_TURBO_G */
431- IEEE80211_CHAN_ST, /* IEEE80211_MODE_TURBO_STATIC_A */
432-};
433-
434-static const u_int16_t rcl1[] = /* 8 FCC channel: 52, 56, 60, 64,
435- * 36, 40, 44, 48 */
436-{ 5260, 5280, 5300, 5320, 5180, 5200, 5220, 5240 };
437-static const u_int16_t rcl2[] = /* 4 MKK channels: 34, 38, 42, 46 */
438-{ 5170, 5190, 5210, 5230 };
439-static const u_int16_t rcl3[] = /* 2.4Ghz ch: 1,6,11,7,13 */
440-{ 2412, 2437, 2462, 2442, 2472 };
441-static const u_int16_t rcl4[] = /* 5 FCC channel: 149, 153, 161, 165 */
442-{ 5745, 5765, 5785, 5805, 5825 };
443-static const u_int16_t rcl7[] = /* 11 ETSI channel: 100, 104, 108, 112,
444- * 116, 120, 124, 128,
445- * 132, 136, 140 */
446-{ 5500, 5520, 5540, 5560, 5580, 5600, 5620, 5640, 5660, 5680, 5700 };
447-static const u_int16_t rcl8[] = /* 2.4Ghz ch: 2,3,4,5,8,9,10,12 */
448-{ 2417, 2422, 2427, 2432, 2447, 2452, 2457, 2467 };
449-static const u_int16_t rcl9[] = /* 2.4Ghz ch: 14 */
450-{ 2484 };
451-static const u_int16_t rcl10[] = /* Added Korean channels 2312-2372 */
452-{ 2312, 2317, 2322, 2327, 2332, 2337, 2342, 2347, 2352, 2357, 2362, 2367, 2372 };
453-static const u_int16_t rcl11[] = /* Added Japan channels in 4.9/5.0 spectrum */
454-{ 5040, 5060, 5080, 4920, 4940, 4960, 4980 };
455-#ifdef ATH_TURBO_SCAN
456-static const u_int16_t rcl5[] = /* 3 static turbo channels */
457-{ 5210, 5250, 5290 };
458-static const u_int16_t rcl6[] = /* 2 static turbo channels */
459-{ 5760, 5800 };
460-static const u_int16_t rcl6x[] = /* 4 FCC3 turbo channels */
461-{ 5540, 5580, 5620, 5660 };
462-static const u_int16_t rcl12[] = /* 2.4Ghz Turbo channel 6 */
463-{ 2437 };
464-static const u_int16_t rcl13[] = /* dynamic Turbo channels */
465-{ 5200, 5240, 5280, 5765, 5805 };
466-#endif /* ATH_TURBO_SCAN */
467-
468-struct scanlist {
469- u_int16_t mode;
470- u_int16_t count;
471- const u_int16_t *list;
472-};
473-
474-#define IEEE80211_MODE_TURBO_STATIC_A IEEE80211_MODE_MAX
475-#define X(a) .count = ARRAY_SIZE(a), .list = a
476-
477-static const struct scanlist staScanTable[] = {
478- { IEEE80211_MODE_11B, X(rcl3) },
479- { IEEE80211_MODE_11A, X(rcl1) },
480- { IEEE80211_MODE_11A, X(rcl2) },
481- { IEEE80211_MODE_11B, X(rcl8) },
482- { IEEE80211_MODE_11B, X(rcl9) },
483- { IEEE80211_MODE_11A, X(rcl4) },
484-#ifdef ATH_TURBO_SCAN
485- { IEEE80211_MODE_TURBO_STATIC_A, X(rcl5) },
486- { IEEE80211_MODE_TURBO_STATIC_A, X(rcl6) },
487- { IEEE80211_MODE_TURBO_A, X(rcl6x) },
488- { IEEE80211_MODE_TURBO_A, X(rcl13) },
489-#endif /* ATH_TURBO_SCAN */
490- { IEEE80211_MODE_11A, X(rcl7) },
491- { IEEE80211_MODE_11B, X(rcl10) },
492- { IEEE80211_MODE_11A, X(rcl11) },
493-#ifdef ATH_TURBO_SCAN
494- { IEEE80211_MODE_TURBO_G, X(rcl12) },
495-#endif /* ATH_TURBO_SCAN */
496- { .list = NULL }
497-};
498-
499-#undef X
500-/* This function must be invoked with locks acquired */
501-static void
502-add_channels(struct ieee80211com *ic,
503- struct ieee80211_scan_state *ss,
504- enum ieee80211_phymode mode, const u_int16_t freq[], int nfreq)
505-{
506- struct ieee80211_channel *c, *cg;
507- u_int modeflags;
508- int i;
509-
510- KASSERT(mode < ARRAY_SIZE(chanflags), ("Unexpected mode %u", mode));
511- modeflags = chanflags[mode];
512- for (i = 0; i < nfreq; i++) {
513- c = ieee80211_find_channel(ic, freq[i], modeflags);
514- if ((c == NULL) || isclr(ic->ic_chan_active, c->ic_ieee))
515- continue;
516- if (mode == IEEE80211_MODE_AUTO) {
517- /* XXX special-case 11b/g channels so we select
518- * the g channel if both are present. */
519- if (IEEE80211_IS_CHAN_B(c) &&
520- (cg = find11gchannel(ic, i, c->ic_freq)) != NULL)
521- c = cg;
522- }
523- if (ss->ss_last >= IEEE80211_SCAN_MAX)
524- break;
525- ss->ss_chans[ss->ss_last++] = c;
526- }
527-}
528-
529-/* This function must be invoked with locks acquired */
530-static int
531-checktable(const struct scanlist *scan, const struct ieee80211_channel *c)
532-{
533- int i;
534-
535- for (; scan->list != NULL; scan++) {
536- for (i = 0; i < scan->count; i++)
537- if (scan->list[i] == c->ic_freq)
538- return 1;
539- }
540- return 0;
541-}
542 
543 /*
544  * Attach prior to any scanning work.
545@@ -327,29 +198,6 @@ saveie(u_int8_t **iep, const u_int8_t *i
546         ieee80211_saveie(iep, ie);
547 }
548 
549-/* This function must be invoked with locks acquired */
550-static struct ieee80211_channel *
551-find11gchannel(struct ieee80211com *ic, int i, int freq)
552-{
553- struct ieee80211_channel *c;
554- int j;
555-
556- /* The normal ordering in the channel list is b channel
557- * immediately followed by g so optimize the search for
558- * this. We'll still do a full search just in case. */
559- for (j = i + 1; j < ic->ic_nchans; j++) {
560- c = &ic->ic_channels[j];
561- if ((c->ic_freq == freq) && IEEE80211_IS_CHAN_ANYG(c))
562- return c;
563- }
564- for (j = 0; j < i; j++) {
565- c = &ic->ic_channels[j];
566- if ((c->ic_freq == freq) && IEEE80211_IS_CHAN_ANYG(c))
567- return c;
568- }
569- return NULL;
570-}
571-
572 /*
573  * Start an ap scan by populating the channel list.
574  */
575@@ -358,90 +206,15 @@ ap_start(struct ieee80211_scan_state *ss
576 {
577     struct ap_state *as = ss->ss_priv;
578     struct ieee80211com *ic = NULL;
579- const struct scanlist *sl = NULL;
580- struct ieee80211_channel *c = NULL;
581     int i;
582     unsigned int mode = 0;
583 
584     SCAN_AP_LOCK_IRQ(as);
585     ic = vap->iv_ic;
586     /* Determine mode flags to match, or leave zero for auto mode */
587- as->as_vap_desired_mode = vap->iv_des_mode;
588- as->as_required_mode = 0;
589- if (as->as_vap_desired_mode != IEEE80211_MODE_AUTO) {
590- as->as_required_mode = chanflags[as->as_vap_desired_mode];
591- if ((vap->iv_ath_cap & IEEE80211_ATHC_TURBOP) &&
592- (as->as_required_mode != IEEE80211_CHAN_ST)) {
593- /* Fixup for dynamic turbo flags */
594- if (as->as_vap_desired_mode == IEEE80211_MODE_11G)
595- as->as_required_mode = IEEE80211_CHAN_108G;
596- else
597- as->as_required_mode = IEEE80211_CHAN_108A;
598- }
599- }
600-
601     ss->ss_last = 0;
602- /* Use the table of ordered channels to construct the list
603- * of channels for scanning. Any channels in the ordered
604- * list not in the master list will be discarded. */
605- for (sl = staScanTable; sl->list != NULL; sl++) {
606- mode = sl->mode;
607-
608- /* The scan table marks 2.4Ghz channels as b
609- * so if the desired mode is 11g, then use
610- * the 11b channel list but upgrade the mode. */
611- if (as->as_vap_desired_mode &&
612- (as->as_vap_desired_mode != mode) &&
613- (as->as_vap_desired_mode == IEEE80211_MODE_11G) &&
614- (mode == IEEE80211_MODE_11B))
615- mode = IEEE80211_MODE_11G;
616-
617- /* If we are in "AUTO" mode, upgrade the mode to auto.
618- * This lets add_channels upgrade an 11b channel to
619- * 11g if available. */
620- if (!as->as_vap_desired_mode && (mode == IEEE80211_MODE_11B))
621- mode = IEEE80211_MODE_AUTO;
622-
623- /* Add the list of the channels; any that are not
624- * in the master channel list will be discarded. */
625- add_channels(ic, ss, mode, sl->list, sl->count);
626- }
627-
628- /* Add the channels from the ic (from HAL) that are not present
629- * in the staScanTable, assuming they pass the sanity checks... */
630- for (i = 0; i < ic->ic_nchans; i++) {
631- c = &ic->ic_channels[i];
632-
633- /* XR is not supported on turbo channels */
634- if (IEEE80211_IS_CHAN_TURBO(c) && vap->iv_flags & IEEE80211_F_XR)
635- continue;
636-
637- /* Dynamic channels are scanned in base mode */
638- if (!as->as_required_mode && !IEEE80211_IS_CHAN_ST(c))
639- continue;
640-
641- /* Use any 11g channel instead of 11b one. */
642- if (vap->iv_des_mode == IEEE80211_MODE_AUTO &&
643- IEEE80211_IS_CHAN_B(c) &&
644- find11gchannel(ic, i, c->ic_freq))
645- continue;
646-
647- /* Do not add channels already put into the scan list by the
648- * scan table - these have already been filtered by mode
649- * and for whether they are in the active channel list. */
650- if (checktable(staScanTable, c))
651- continue;
652-
653- /* Make sure the channel is active */
654- if ((c == NULL) || isclr(ic->ic_chan_active, c->ic_ieee))
655- continue;
656+ ieee80211_scan_add_channels(ic, ss, vap->iv_des_mode);
657 
658- /* Don't overrun */
659- if (ss->ss_last >= IEEE80211_SCAN_MAX)
660- break;
661-
662- ss->ss_chans[ss->ss_last++] = c;
663- }
664     ss->ss_next = 0;
665     /* XXX tunables */
666     ss->ss_mindwell = msecs_to_jiffies(200); /* 200ms */
667@@ -761,18 +534,6 @@ pick_channel(struct ieee80211_scan_state
668         if (IEEE80211_IS_CHAN_RADAR(c->chan))
669             continue;
670 
671- /* Do not select 802.11a ST if mode is specified and is not
672- * 802.11a ST */
673- if (as->as_required_mode &&
674- IEEE80211_IS_CHAN_STURBO(c->chan) &&
675- (as->as_vap_desired_mode != IEEE80211_MODE_TURBO_STATIC_A))
676- continue;
677-
678- /* Verify mode matches any fixed mode specified */
679- if((c->chan->ic_flags & as->as_required_mode) !=
680- as->as_required_mode)
681- continue;
682-
683         if ((ic->ic_bsschan != NULL) &&
684             (ic->ic_bsschan != IEEE80211_CHAN_ANYC)) {
685 
686--- a/net80211/ieee80211_scan.c
687+++ b/net80211/ieee80211_scan.c
688@@ -958,6 +958,80 @@ ieee80211_scan_flush(struct ieee80211com
689     }
690 }
691 
692+static const u_int chanflags[] = {
693+ 0, /* IEEE80211_MODE_AUTO */
694+ IEEE80211_CHAN_A, /* IEEE80211_MODE_11A */
695+ IEEE80211_CHAN_B, /* IEEE80211_MODE_11B */
696+ IEEE80211_CHAN_PUREG, /* IEEE80211_MODE_11G */
697+ IEEE80211_CHAN_FHSS, /* IEEE80211_MODE_FH */
698+ IEEE80211_CHAN_A, /* IEEE80211_MODE_TURBO_A */ /* for turbo mode look for AP in normal channel */
699+ IEEE80211_CHAN_PUREG, /* IEEE80211_MODE_TURBO_G */
700+ IEEE80211_CHAN_ST, /* IEEE80211_MODE_TURBO_STATIC_A */
701+};
702+
703+static struct ieee80211_channel *
704+find11gchannel(struct ieee80211com *ic, int i, int freq)
705+{
706+ struct ieee80211_channel *c;
707+ int j;
708+
709+ /*
710+ * The normal ordering in the channel list is b channel
711+ * immediately followed by g so optimize the search for
712+ * this. We'll still do a full search just in case.
713+ */
714+ for (j = i+1; j < ic->ic_nchans; j++) {
715+ c = &ic->ic_channels[j];
716+ if (c->ic_freq == freq && IEEE80211_IS_CHAN_ANYG(c))
717+ return c;
718+ }
719+ for (j = 0; j < i; j++) {
720+ c = &ic->ic_channels[j];
721+ if (c->ic_freq == freq && IEEE80211_IS_CHAN_ANYG(c))
722+ return c;
723+ }
724+ return NULL;
725+}
726+
727+
728+void
729+ieee80211_scan_add_channels(struct ieee80211com *ic,
730+ struct ieee80211_scan_state *ss,
731+ enum ieee80211_phymode mode)
732+{
733+ struct ieee80211_channel *c, *cg;
734+ u_int modeflags;
735+ int i;
736+
737+ KASSERT(mode < ARRAY_SIZE(chanflags), ("Unexpected mode %u", mode));
738+ modeflags = chanflags[mode];
739+ for (i = 0; i < ic->ic_nchans; i++) {
740+ c = &ic->ic_channels[i];
741+ if (c == NULL || isclr(ic->ic_chan_active, c->ic_ieee))
742+ continue;
743+ if (c->ic_scanflags & IEEE80211_NOSCAN_SET)
744+ continue;
745+ if (modeflags &&
746+ ((c->ic_flags & IEEE80211_CHAN_ALLTURBO) !=
747+ (modeflags & IEEE80211_CHAN_ALLTURBO)))
748+ continue;
749+ if (mode == IEEE80211_MODE_AUTO) {
750+ /*
751+ * XXX special-case 11b/g channels so we select
752+ * the g channel if both are present.
753+ */
754+ if (IEEE80211_IS_CHAN_B(c) &&
755+ (cg = find11gchannel(ic, i, c->ic_freq)) != NULL)
756+ continue;
757+ }
758+ if (ss->ss_last >= IEEE80211_SCAN_MAX)
759+ break;
760+ ss->ss_chans[ss->ss_last++] = c;
761+ }
762+}
763+EXPORT_SYMBOL(ieee80211_scan_add_channels);
764+
765+
766 /*
767  * Execute radar channel change. This is called when a radar/dfs
768  * signal is detected. AP mode only. Return 1 on success, 0 on
769--- a/net80211/ieee80211_scan.h
770+++ b/net80211/ieee80211_scan.h
771@@ -219,4 +219,7 @@ void ieee80211_scanner_register(enum iee
772 void ieee80211_scanner_unregister(enum ieee80211_opmode,
773     const struct ieee80211_scanner *);
774 void ieee80211_scanner_unregister_all(const struct ieee80211_scanner *);
775+void ieee80211_scan_add_channels(struct ieee80211com *ic,
776+ struct ieee80211_scan_state *ss,
777+ enum ieee80211_phymode mode);
778 #endif /* _NET80211_IEEE80211_SCAN_H_ */
779--- a/net80211/ieee80211_wireless.c
780+++ b/net80211/ieee80211_wireless.c
781@@ -3873,6 +3873,106 @@ ieee80211_ioctl_kickmac(struct net_devic
782     return ieee80211_ioctl_setmlme(dev, info, w, (char *)&mlme);
783 }
784 
785+static inline void setflag(struct ieee80211_channel *c, int flag)
786+{
787+ if (flag)
788+ c->ic_scanflags |= IEEE80211_NOSCAN_SET;
789+ else
790+ c->ic_scanflags &= ~IEEE80211_NOSCAN_SET;
791+}
792+
793+static void setscanflag(struct ieee80211com *ic, int min, int max, int set)
794+{
795+ int i;
796+
797+ for (i = 0; i < ic->ic_nchans; i++) {
798+ struct ieee80211_channel *c = &ic->ic_channels[i];
799+
800+ if (min == -1) {
801+ if (!(c->ic_scanflags & IEEE80211_NOSCAN_DEFAULT))
802+ setflag(c, set);
803+ } else if ((c->ic_freq >= min) && (c->ic_freq <= max)) {
804+ setflag(c, set);
805+ }
806+ }
807+}
808+
809+static int
810+ieee80211_ioctl_setscanlist(struct net_device *dev,
811+ struct iw_request_info *info,
812+ struct iw_point *data, char *extra)
813+{
814+ struct ieee80211vap *vap = dev->priv;
815+ struct ieee80211com *ic = vap->iv_ic;
816+ char *s, *next;
817+ int val = 1;
818+
819+ if (data->length <= 0)
820+ return -EINVAL;
821+
822+ s = kmalloc(data->length + 1, GFP_KERNEL);
823+ if (!s)
824+ return -ENOMEM;
825+
826+ memset(s, 0, data->length + 1);
827+ if (copy_from_user(s, data->pointer, data->length))
828+ return -EFAULT;
829+
830+ s[data->length - 1] = '\0'; /* ensure null termination */
831+
832+ switch(*s) {
833+ case '-':
834+ val = 1;
835+ break;
836+ case '+':
837+ val = 0;
838+ break;
839+ default:
840+ goto error;
841+ }
842+ s++;
843+ next = s;
844+ do {
845+ next = strchr(s, ',');
846+ if (next) {
847+ *next = 0;
848+ next++;
849+ }
850+ if (!strcmp(s, "ALL")) {
851+ setscanflag(ic, 0, 10000, val);
852+ } else if (!strcmp(s, "REG")) {
853+ setscanflag(ic, -1, -1, val);
854+ } else {
855+ int min, max;
856+ char *n, *end = NULL;
857+
858+ n = strchr(s, '-');
859+ if (n) {
860+ *n = 0;
861+ n++;
862+ }
863+ min = simple_strtoul(s, &end, 10);
864+ if (end && *end)
865+ goto error;
866+ if (n) {
867+ max = simple_strtoul(n, &end, 10);
868+ if (end && *end)
869+ goto error;
870+ } else {
871+ max = min;
872+ }
873+ setscanflag(ic, min, max, val);
874+ }
875+ s = next;
876+ } while (next);
877+ return 0;
878+
879+error:
880+ if (s)
881+ kfree(s);
882+ return -EINVAL;
883+}
884+
885 static int
886 ieee80211_ioctl_addmac(struct net_device *dev, struct iw_request_info *info,
887     void *w, char *extra)
888@@ -5656,6 +5756,8 @@ static const struct iw_priv_args ieee802
889      IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "minrate"},
890     {IEEE80211_PARAM_MINRATE,
891      0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_minrate"},
892+ { IEEE80211_IOCTL_SETSCANLIST,
893+ IW_PRIV_TYPE_CHAR | 255, 0, "setscanlist"},
894 
895 #ifdef ATH_REVERSE_ENGINEERING
896     /*
897@@ -5753,6 +5855,7 @@ static const iw_handler ieee80211_priv_h
898     set_priv(IEEE80211_IOCTL_WDSADDMAC, ieee80211_ioctl_wdsmac),
899     set_priv(IEEE80211_IOCTL_WDSDELMAC, ieee80211_ioctl_wdsdelmac),
900     set_priv(IEEE80211_IOCTL_KICKMAC, ieee80211_ioctl_kickmac),
901+ set_priv(IEEE80211_IOCTL_SETSCANLIST, ieee80211_ioctl_setscanlist),
902 #ifdef ATH_REVERSE_ENGINEERING
903     set_priv(IEEE80211_IOCTL_READREG, ieee80211_ioctl_readreg),
904     set_priv(IEEE80211_IOCTL_WRITEREG, ieee80211_ioctl_writereg),
905

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