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openwrt/package/madwifi/patches/351-scanlist.patch
Felix Fietkau b4574b5b03 madwifi: improve mode selection, do not scan channels which do not fit the desired mode 
SVN-Revision: 15663
2009-05-07 11:32:43 +00:00

905 lines
27 KiB
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--- a/net80211/ieee80211_scan_sta.c
+++ b/net80211/ieee80211_scan_sta.c
@@ -317,147 +317,6 @@ found:
#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 @@ sta_start(struct ieee80211_scan_state *s
{
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 @@ match_bss(struct ieee80211vap *vap,
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 @@ static const struct ieee80211_scanner st
.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 @@ static const struct ieee80211_scanner ad
.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 @@ ieee80211_ifattach(struct ieee80211com *
("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;
@@ -1447,10 +1452,6 @@ ieee80211_media_change(struct net_device
vap->iv_fixed_rate = newrate; /* fixed TX rate */
error = -ENETRESET;
}
- if (vap->iv_des_mode != newmode) {
- vap->iv_des_mode = newmode; /* desired PHY mode */
- error = -ENETRESET;
- }
return error;
}
EXPORT_SYMBOL(ieee80211_media_change);
--- a/net80211/_ieee80211.h
+++ b/net80211/_ieee80211.h
@@ -132,6 +132,11 @@ enum ieee80211_scanmode {
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 @@ struct ieee80211_channel {
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 @@ struct ieee80211req_scan_result {
#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
@@ -105,11 +105,6 @@ struct scan_entry {
};
struct ap_state {
- unsigned int as_vap_desired_mode; /* Used for channel selection,
- * vap->iv_des_mode */
- unsigned int as_required_mode; /* Used for channel selection,
- * filtered version of
- * as_vap_desired_mode */
int as_maxrssi[IEEE80211_CHAN_MAX]; /* Used for channel selection */
/* These fields are just for scan caching for returning responses to
@@ -129,131 +124,7 @@ struct ap_state {
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 +198,6 @@ saveie(u_int8_t **iep, const u_int8_t *i
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.
*/
@@ -358,90 +206,15 @@ ap_start(struct ieee80211_scan_state *ss
{
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;
SCAN_AP_LOCK_IRQ(as);
ic = vap->iv_ic;
/* 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;
-
- /* 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;
+ ieee80211_scan_add_channels(ic, ss, vap->iv_des_mode);
- /* 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 */
@@ -761,18 +534,6 @@ pick_channel(struct ieee80211_scan_state
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)
- continue;
-
if ((ic->ic_bsschan != NULL) &&
(ic->ic_bsschan != IEEE80211_CHAN_ANYC)) {
--- a/net80211/ieee80211_scan.c
+++ b/net80211/ieee80211_scan.c
@@ -958,6 +958,80 @@ ieee80211_scan_flush(struct ieee80211com
}
}
+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_register(enum iee
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 @@ ieee80211_ioctl_kickmac(struct net_devic
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 @@ static const struct iw_priv_args ieee802
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 @@ static const iw_handler ieee80211_priv_h
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),
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