mirror of
https://github.com/proski/madwifi
synced 2024-11-22 06:21:47 +03:00
Added support for AP mode scan results to be updated and returned to
wireless tools and other clients. This fixes: bgscan iwlist <iface> scan wlanconfig <iface> list scan wlanconfig <iface> list peers etc... git-svn-id: http://madwifi-project.org/svn/madwifi/trunk@2724 0192ed92-7a03-0410-a25b-9323aeb14dbd
This commit is contained in:
mtaylor
parent
2c0d8db912
commit
d9ca43629b
@ -51,8 +51,67 @@
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#include <net80211/ieee80211_var.h>
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#define AP_PURGE_SCANS 2 /* age for purging entries (scans) */
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#define RSSI_LPF_LEN 10
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#define RSSI_EP_MULTIPLIER (1<<7) /* pow2 to optimize out * and / */
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#define RSSI_IN(x) ((x) * RSSI_EP_MULTIPLIER)
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#define LPF_RSSI(x, y, len) (((x) * ((len) - 1) + (y)) / (len))
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#define RSSI_LPF(x, y) do { \
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if ((y) >= -20) \
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x = LPF_RSSI((x), RSSI_IN((y)), RSSI_LPF_LEN); \
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} while (0)
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#define EP_RND(x, mul) \
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((((x)%(mul)) >= ((mul)/2)) ? howmany(x, mul) : (x)/(mul))
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#define RSSI_GET(x) EP_RND(x, RSSI_EP_MULTIPLIER)
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#define AP_HASHSIZE 32
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/* simple hash is enough for variation of macaddr */
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#define AP_HASH(addr) \
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(((const u_int8_t *)(addr))[IEEE80211_ADDR_LEN - 1] % AP_HASHSIZE)
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#define SCAN_AP_LOCK_INIT(_st, _name) \
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spin_lock_init(&(_st)->as_lock)
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#define SCAN_AP_LOCK_DESTROY(_st)
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#define SCAN_AP_LOCK_IRQ(_st) do { \
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unsigned long __stlockflags; \
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spin_lock_irqsave(&(_st)->as_lock, __stlockflags);
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#define SCAN_AP_UNLOCK_IRQ(_st) \
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spin_unlock_irqrestore(&(_st)->as_lock, __stlockflags); \
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} while (0)
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#define SCAN_AP_UNLOCK_IRQ_EARLY(_st) \
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spin_unlock_irqrestore(&(_st)->as_lock, __stlockflags);
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#define SCAN_AP_GEN_LOCK_INIT(_st, _name) \
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spin_lock_init(&(_st)->as_scanlock)
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#define SCAN_AP_GEN_LOCK_DESTROY(_st)
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#define SCAN_AP_GEN_LOCK(_st) spin_lock(&(_st)->as_scanlock);
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#define SCAN_AP_GEN_UNLOCK(_st) spin_unlock(&(_st)->as_scanlock);
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struct scan_entry {
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struct ieee80211_scan_entry base;
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TAILQ_ENTRY(scan_entry) se_list;
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LIST_ENTRY(scan_entry) se_hash;
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u_int8_t se_seen; /* seen during current scan */
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u_int8_t se_notseen; /* not seen in previous scans */
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u_int32_t se_avgrssi; /* LPF rssi state */
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unsigned long se_lastupdate; /* time of last update */
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unsigned long se_lastfail; /* time of last failure */
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unsigned long se_lastassoc; /* time of last association */
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u_int se_scangen; /* iterator scan gen# */
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};
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struct ap_state {
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int as_maxrssi[IEEE80211_CHAN_MAX];
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unsigned int as_vap_desired_mode; /* Used for channel selection, vap->iv_des_mode */
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unsigned int as_required_mode; /* Used for channel selection, filtered version of as_vap_desired_mode */
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int as_maxrssi[IEEE80211_CHAN_MAX]; /* Used for channel selection */
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/* These fields are just for scan caching for returning responses to
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* wireless extensions. i.e. show peers, APs, etc. */
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spinlock_t as_lock; /* on scan table */
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int as_newscan; /* trigger for updating seen/not-seen for aging */
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TAILQ_HEAD(, scan_entry) as_entry; /* all entries */
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ATH_LIST_HEAD(, scan_entry) as_hash[AP_HASHSIZE];
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spinlock_t as_scanlock; /* on as_scangen */
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u_int as_scangen; /* gen# for iterator */
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struct IEEE80211_TQ_STRUCT as_actiontq; /* tasklet for "action" */
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struct ieee80211_scan_entry as_selbss; /* selected bss for action tasklet */
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int (*as_action)(struct ieee80211vap *, const struct ieee80211_scan_entry *);
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@ -60,6 +119,128 @@ struct ap_state {
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static int ap_flush(struct ieee80211_scan_state *);
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static void action_tasklet(IEEE80211_TQUEUE_ARG);
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static struct ieee80211_channel *find11gchannel(struct ieee80211com *ic, int i, int freq);
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static const u_int chanflags[] = {
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IEEE80211_CHAN_B, /* IEEE80211_MODE_AUTO */
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IEEE80211_CHAN_A, /* IEEE80211_MODE_11A */
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IEEE80211_CHAN_B, /* IEEE80211_MODE_11B */
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IEEE80211_CHAN_PUREG, /* IEEE80211_MODE_11G */
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IEEE80211_CHAN_FHSS, /* IEEE80211_MODE_FH */
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IEEE80211_CHAN_A, /* IEEE80211_MODE_TURBO_A */ /* for turbo mode look for AP in normal channel */
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IEEE80211_CHAN_PUREG, /* IEEE80211_MODE_TURBO_G */
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IEEE80211_CHAN_ST, /* IEEE80211_MODE_TURBO_STATIC_A */
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};
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static const u_int16_t rcl1[] = /* 8 FCC channel: 52, 56, 60, 64, 36, 40, 44, 48 */
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{ 5260, 5280, 5300, 5320, 5180, 5200, 5220, 5240 };
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static const u_int16_t rcl2[] = /* 4 MKK channels: 34, 38, 42, 46 */
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{ 5170, 5190, 5210, 5230 };
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static const u_int16_t rcl3[] = /* 2.4Ghz ch: 1,6,11,7,13 */
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{ 2412, 2437, 2462, 2442, 2472 };
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static const u_int16_t rcl4[] = /* 5 FCC channel: 149, 153, 161, 165 */
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{ 5745, 5765, 5785, 5805, 5825 };
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static const u_int16_t rcl7[] = /* 11 ETSI channel: 100,104,108,112,116,120,124,128,132,136,140 */
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{ 5500, 5520, 5540, 5560, 5580, 5600, 5620, 5640, 5660, 5680, 5700 };
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static const u_int16_t rcl8[] = /* 2.4Ghz ch: 2,3,4,5,8,9,10,12 */
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{ 2417, 2422, 2427, 2432, 2447, 2452, 2457, 2467 };
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static const u_int16_t rcl9[] = /* 2.4Ghz ch: 14 */
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{ 2484 };
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static const u_int16_t rcl10[] = /* Added Korean channels 2312-2372 */
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{ 2312, 2317, 2322, 2327, 2332, 2337, 2342, 2347, 2352, 2357, 2362, 2367, 2372 };
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static const u_int16_t rcl11[] = /* Added Japan channels in 4.9/5.0 spectrum */
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{ 5040, 5060, 5080, 4920, 4940, 4960, 4980 };
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#ifdef ATH_TURBO_SCAN
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static const u_int16_t rcl5[] = /* 3 static turbo channels */
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{ 5210, 5250, 5290 };
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static const u_int16_t rcl6[] = /* 2 static turbo channels */
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{ 5760, 5800 };
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static const u_int16_t rcl6x[] = /* 4 FCC3 turbo channels */
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{ 5540, 5580, 5620, 5660 };
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static const u_int16_t rcl12[] = /* 2.4Ghz Turbo channel 6 */
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{ 2437 };
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static const u_int16_t rcl13[] = /* dynamic Turbo channels */
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{ 5200, 5240, 5280, 5765, 5805 };
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#endif /* ATH_TURBO_SCAN */
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struct scanlist {
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u_int16_t mode;
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u_int16_t count;
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const u_int16_t *list;
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};
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#define IEEE80211_MODE_TURBO_STATIC_A IEEE80211_MODE_MAX
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#define X(a) .count = sizeof(a)/sizeof(a[0]), .list = a
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static const struct scanlist staScanTable[] = {
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{ IEEE80211_MODE_11B, X(rcl3) },
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{ IEEE80211_MODE_11A, X(rcl1) },
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{ IEEE80211_MODE_11A, X(rcl2) },
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{ IEEE80211_MODE_11B, X(rcl8) },
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{ IEEE80211_MODE_11B, X(rcl9) },
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{ IEEE80211_MODE_11A, X(rcl4) },
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#ifdef ATH_TURBO_SCAN
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{ IEEE80211_MODE_TURBO_STATIC_A, X(rcl5) },
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{ IEEE80211_MODE_TURBO_STATIC_A, X(rcl6) },
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{ IEEE80211_MODE_TURBO_A, X(rcl6x) },
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{ IEEE80211_MODE_TURBO_A, X(rcl13) },
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#endif /* ATH_TURBO_SCAN */
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{ IEEE80211_MODE_11A, X(rcl7) },
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{ IEEE80211_MODE_11B, X(rcl10) },
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{ IEEE80211_MODE_11A, X(rcl11) },
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#ifdef ATH_TURBO_SCAN
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{ IEEE80211_MODE_TURBO_G, X(rcl12) },
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#endif /* ATH_TURBO_SCAN */
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{ .list = NULL }
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};
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#undef X
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/* This function must be invoked with locks acquired */
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static void
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add_channels(struct ieee80211com *ic,
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struct ieee80211_scan_state *ss,
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enum ieee80211_phymode mode, const u_int16_t freq[], int nfreq)
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{
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#define N(a) (sizeof(a) / sizeof(a[0]))
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struct ieee80211_channel *c, *cg;
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u_int modeflags;
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int i;
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KASSERT(mode < N(chanflags), ("Unexpected mode %u", mode));
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modeflags = chanflags[mode];
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for (i = 0; i < nfreq; i++) {
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c = ieee80211_find_channel(ic, freq[i], modeflags);
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if (c == NULL || isclr(ic->ic_chan_active, c->ic_ieee))
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continue;
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if (mode == IEEE80211_MODE_AUTO) {
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/*
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* XXX special-case 11b/g channels so we select
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* the g channel if both are present.
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*/
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if (IEEE80211_IS_CHAN_B(c) &&
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(cg = find11gchannel(ic, i, c->ic_freq)) != NULL)
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c = cg;
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}
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if (ss->ss_last >= IEEE80211_SCAN_MAX)
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break;
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ss->ss_chans[ss->ss_last++] = c;
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}
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#undef N
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}
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/* This function must be invoked with locks acquired */
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static int
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checktable(const struct scanlist *scan, const struct ieee80211_channel *c)
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{
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int i;
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for (; scan->list != NULL; scan++) {
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for (i = 0; i < scan->count; i++)
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if (scan->list[i] == c->ic_freq)
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return 1;
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}
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return 0;
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}
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/*
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* Attach prior to any scanning work.
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@ -72,9 +253,14 @@ ap_attach(struct ieee80211_scan_state *ss)
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_MOD_INC_USE(THIS_MODULE, return 0);
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MALLOC(as, struct ap_state *, sizeof(struct ap_state),
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M_SCANCACHE, M_NOWAIT);
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ss->ss_priv = as;
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M_80211_SCAN, M_NOWAIT | M_ZERO);
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if (as == NULL)
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return 0;
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SCAN_AP_LOCK_INIT(as, "scan_ap");
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SCAN_AP_GEN_LOCK_INIT(as, "scan_ap_gen");
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TAILQ_INIT(&as->as_entry);
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IEEE80211_INIT_TQUEUE(&as->as_actiontq, action_tasklet, ss);
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ss->ss_priv = as;
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ap_flush(ss);
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return 1;
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}
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@ -87,8 +273,11 @@ ap_detach(struct ieee80211_scan_state *ss)
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{
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struct ap_state *as = ss->ss_priv;
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if (as != NULL)
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FREE(as, M_SCANCACHE);
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if (as != NULL) {
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ap_flush(ss);
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IEEE80211_CANCEL_TQUEUE(&as->as_actiontq);
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FREE(as, M_80211_SCAN);
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}
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_MOD_DEC_USE(THIS_MODULE);
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return 1;
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@ -101,16 +290,35 @@ static int
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ap_flush(struct ieee80211_scan_state *ss)
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{
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struct ap_state *as = ss->ss_priv;
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struct scan_entry *se, *next;
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SCAN_AP_LOCK_IRQ(as);
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memset(as->as_maxrssi, 0, sizeof(as->as_maxrssi));
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TAILQ_FOREACH_SAFE(se, &as->as_entry, se_list, next) {
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TAILQ_REMOVE(&as->as_entry, se, se_list);
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LIST_REMOVE(se, se_hash);
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FREE(se, M_80211_SCAN);
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}
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ss->ss_last = 0; /* ensure no channel will be picked */
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SCAN_AP_UNLOCK_IRQ(as);
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return 0;
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}
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static int
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/* This function must be invoked with locks acquired */
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static void
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saveie(u_int8_t **iep, const u_int8_t *ie)
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{
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if (ie == NULL)
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*iep = NULL;
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else
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ieee80211_saveie(iep, ie);
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}
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/* This function must be invoked with locks acquired */
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static struct ieee80211_channel *
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find11gchannel(struct ieee80211com *ic, int i, int freq)
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{
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const struct ieee80211_channel *c;
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struct ieee80211_channel *c;
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int j;
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/*
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@ -121,14 +329,14 @@ find11gchannel(struct ieee80211com *ic, int i, int freq)
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for (j = i+1; j < ic->ic_nchans; j++) {
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c = &ic->ic_channels[j];
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if (c->ic_freq == freq && IEEE80211_IS_CHAN_ANYG(c))
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return 1;
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return c;
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}
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for (j = 0; j < i; j++) {
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c = &ic->ic_channels[j];
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if (c->ic_freq == freq && IEEE80211_IS_CHAN_ANYG(c))
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return 1;
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return c;
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}
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return 0;
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return NULL;
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}
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/*
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@ -137,75 +345,89 @@ find11gchannel(struct ieee80211com *ic, int i, int freq)
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static int
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ap_start(struct ieee80211_scan_state *ss, struct ieee80211vap *vap)
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{
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struct ieee80211com *ic = vap->iv_ic;
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struct ieee80211_channel *c;
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struct ap_state *as = ss->ss_priv;
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struct ieee80211com *ic = NULL;
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const struct scanlist *sl = NULL;
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struct ieee80211_channel *c = NULL;
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int i;
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unsigned int mode = 0;
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SCAN_AP_LOCK_IRQ(as);
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ic = vap->iv_ic;
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/* Determine mode flags to match, or leave zero for auto mode */
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as->as_vap_desired_mode = vap->iv_des_mode;
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as->as_required_mode = 0;
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if (as->as_vap_desired_mode != IEEE80211_MODE_AUTO) {
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as->as_required_mode = chanflags[as->as_vap_desired_mode];
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if (vap->iv_ath_cap & IEEE80211_ATHC_TURBOP &&
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as->as_required_mode != IEEE80211_CHAN_ST) {
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/* Fixup for dynamic turbo flags */
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if (as->as_vap_desired_mode == IEEE80211_MODE_11G)
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as->as_required_mode = IEEE80211_CHAN_108G;
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else
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as->as_required_mode = IEEE80211_CHAN_108A;
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}
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}
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ss->ss_last = 0;
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if (vap->iv_des_mode == IEEE80211_MODE_AUTO) {
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for (i = 0; i < ic->ic_nchans; i++) {
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c = &ic->ic_channels[i];
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if (IEEE80211_IS_CHAN_TURBO(c)) {
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/* XR is not supported on turbo channels */
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if (vap->iv_ath_cap & IEEE80211_ATHC_XR)
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continue;
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/* dynamic channels are scanned in base mode */
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if (!IEEE80211_IS_CHAN_ST(c))
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continue;
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} else {
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/*
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* Use any 11g channel instead of 11b one.
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*/
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if (IEEE80211_IS_CHAN_B(c) &&
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find11gchannel(ic, i, c->ic_freq))
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continue;
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}
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if (c->ic_flags & IEEE80211_CHAN_RADAR)
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continue;
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if (ss->ss_last >= IEEE80211_SCAN_MAX)
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break;
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ss->ss_chans[ss->ss_last++] = c;
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}
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} else {
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static const u_int chanflags[] = {
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0, /* IEEE80211_MODE_AUTO */
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IEEE80211_CHAN_A, /* IEEE80211_MODE_11A */
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IEEE80211_CHAN_B, /* IEEE80211_MODE_11B */
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IEEE80211_CHAN_PUREG, /* IEEE80211_MODE_11G */
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IEEE80211_CHAN_FHSS, /* IEEE80211_MODE_FH */
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IEEE80211_CHAN_108A, /* IEEE80211_MODE_TURBO_A */
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IEEE80211_CHAN_108G, /* IEEE80211_MODE_TURBO_G */
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IEEE80211_CHAN_ST, /* IEEE80211_MODE_TURBO_STATIC_A */
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};
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u_int modeflags;
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/* Use the table of ordered channels to construct the list
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* of channels for scanning. Any channels in the ordered
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* list not in the master list will be discarded. */
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for (sl = staScanTable; sl->list != NULL; sl++) {
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mode = sl->mode;
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/* The scan table marks 2.4Ghz channels as b
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* so if the desired mode is 11g, then use
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* the 11b channel list but upgrade the mode. */
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if (as->as_vap_desired_mode &&
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as->as_vap_desired_mode != mode &&
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as->as_vap_desired_mode == IEEE80211_MODE_11G &&
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mode == IEEE80211_MODE_11B)
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mode = IEEE80211_MODE_11G;
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/* If we are in "AUTO" mode, upgrade the mode to auto.
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* This lets add_channels upgrade an 11b channel to
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* 11g if available. */
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if(!as->as_vap_desired_mode && mode == IEEE80211_MODE_11B)
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mode = IEEE80211_MODE_AUTO;
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/* Add the list of the channels; any that are not
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* in the master channel list will be discarded. */
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add_channels(ic, ss, mode, sl->list, sl->count);
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}
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modeflags = chanflags[vap->iv_des_mode];
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if (vap->iv_ath_cap & IEEE80211_ATHC_TURBOP && modeflags != IEEE80211_CHAN_ST) {
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if (vap->iv_des_mode == IEEE80211_MODE_11G)
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modeflags = IEEE80211_CHAN_108G;
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else
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modeflags = IEEE80211_CHAN_108A;
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}
|
||||
for (i = 0; i < ic->ic_nchans; i++) {
|
||||
c = &ic->ic_channels[i];
|
||||
if ((c->ic_flags & modeflags) != modeflags)
|
||||
continue;
|
||||
/* XR is not supported on turbo channels */
|
||||
if (IEEE80211_IS_CHAN_TURBO(c) && vap->iv_ath_cap & IEEE80211_ATHC_XR)
|
||||
continue;
|
||||
if (ss->ss_last >= IEEE80211_SCAN_MAX)
|
||||
break;
|
||||
/*
|
||||
* do not select static turbo channels if the mode is not
|
||||
* static turbo .
|
||||
*/
|
||||
if (IEEE80211_IS_CHAN_STURBO(c) && vap->iv_des_mode != IEEE80211_MODE_MAX )
|
||||
continue;
|
||||
/* No dfs interference detected channels */
|
||||
if (c->ic_flags & IEEE80211_CHAN_RADAR)
|
||||
continue;
|
||||
ss->ss_chans[ss->ss_last++] = c;
|
||||
}
|
||||
/*
|
||||
* 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;
|
||||
|
||||
/* Don't overrun */
|
||||
if (ss->ss_last >= IEEE80211_SCAN_MAX)
|
||||
break;
|
||||
|
||||
ss->ss_chans[ss->ss_last++] = c;
|
||||
}
|
||||
ss->ss_next = 0;
|
||||
/* XXX tunables */
|
||||
@ -221,6 +443,8 @@ ap_start(struct ieee80211_scan_state *ss, struct ieee80211vap *vap)
|
||||
}
|
||||
#endif /* IEEE80211_DEBUG */
|
||||
|
||||
as->as_newscan = 1;
|
||||
SCAN_AP_UNLOCK_IRQ(as);
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -230,6 +454,8 @@ ap_start(struct ieee80211_scan_state *ss, struct ieee80211vap *vap)
|
||||
static int
|
||||
ap_restart(struct ieee80211_scan_state *ss, struct ieee80211vap *vap)
|
||||
{
|
||||
struct ap_state *as = ss->ss_priv;
|
||||
as->as_newscan = 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -240,7 +466,6 @@ static int
|
||||
ap_cancel(struct ieee80211_scan_state *ss, struct ieee80211vap *vap)
|
||||
{
|
||||
struct ap_state *as = ss->ss_priv;
|
||||
|
||||
IEEE80211_CANCEL_TQUEUE(&as->as_actiontq);
|
||||
return 0;
|
||||
}
|
||||
@ -252,17 +477,92 @@ static int
|
||||
ap_add(struct ieee80211_scan_state *ss, const struct ieee80211_scanparams *sp,
|
||||
const struct ieee80211_frame *wh, int subtype, int rssi, u_int64_t rtsf)
|
||||
{
|
||||
struct ap_state *as = ss->ss_priv;
|
||||
struct ieee80211vap *vap = ss->ss_vap;
|
||||
struct ieee80211com *ic = vap->iv_ic;
|
||||
int chan;
|
||||
struct ap_state *as = ss->ss_priv;
|
||||
const u_int8_t *macaddr = wh->i_addr2;
|
||||
struct ieee80211vap *vap = NULL;
|
||||
struct ieee80211com *ic = NULL;
|
||||
struct scan_entry *se = NULL;
|
||||
struct ieee80211_scan_entry *ise = NULL;
|
||||
int hash;
|
||||
int chan = 0;
|
||||
|
||||
chan = ieee80211_chan2ieee(ic, ic->ic_curchan);
|
||||
/* XXX better quantification of channel use? */
|
||||
/* XXX: count BSSs? */
|
||||
/* This section provides scan results to wireless extensions */
|
||||
SCAN_AP_LOCK_IRQ(as);
|
||||
/* This is the only information used for channel selection by AP */
|
||||
if (rssi > as->as_maxrssi[chan])
|
||||
as->as_maxrssi[chan] = rssi;
|
||||
/* XXX interference, turbo requirements */
|
||||
vap = ss->ss_vap;
|
||||
ic = vap->iv_ic;
|
||||
hash = AP_HASH(macaddr);
|
||||
chan = ieee80211_chan2ieee(ic, ic->ic_curchan);
|
||||
LIST_FOREACH(se, &as->as_hash[hash], se_hash)
|
||||
if (IEEE80211_ADDR_EQ(se->base.se_macaddr, macaddr) &&
|
||||
sp->ssid[1] == se->base.se_ssid[1] &&
|
||||
!memcmp(se->base.se_ssid+2, sp->ssid+2, se->base.se_ssid[1]))
|
||||
goto found;
|
||||
|
||||
MALLOC(se, struct scan_entry *, sizeof(struct scan_entry),
|
||||
M_80211_SCAN, M_NOWAIT | M_ZERO);
|
||||
if (se == NULL) {
|
||||
SCAN_AP_UNLOCK_IRQ_EARLY(as);
|
||||
return 0;
|
||||
}
|
||||
se->se_scangen = as->as_scangen-1;
|
||||
IEEE80211_ADDR_COPY(se->base.se_macaddr, macaddr);
|
||||
TAILQ_INSERT_TAIL(&as->as_entry, se, se_list);
|
||||
LIST_INSERT_HEAD(&as->as_hash[hash], se, se_hash);
|
||||
found:
|
||||
ise = &se->base;
|
||||
/* XXX ap beaconing multiple ssid w/ same bssid */
|
||||
if (sp->ssid[1] != 0 &&
|
||||
((subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) || ise->se_ssid[1] == 0))
|
||||
{
|
||||
memcpy(ise->se_ssid, sp->ssid, 2 + sp->ssid[1]);
|
||||
}
|
||||
KASSERT(sp->rates[1] <= IEEE80211_RATE_MAXSIZE,
|
||||
("rate set too large: %u", sp->rates[1]));
|
||||
memcpy(ise->se_rates, sp->rates, 2 + sp->rates[1]);
|
||||
if (sp->xrates != NULL) {
|
||||
/* XXX validate xrates[1] */
|
||||
KASSERT(sp->xrates[1] <= IEEE80211_RATE_MAXSIZE,
|
||||
("xrate set too large: %u", sp->xrates[1]));
|
||||
memcpy(ise->se_xrates, sp->xrates, 2 + sp->xrates[1]);
|
||||
} else
|
||||
ise->se_xrates[1] = 0;
|
||||
IEEE80211_ADDR_COPY(ise->se_bssid, wh->i_addr3);
|
||||
/*
|
||||
* Record rssi data using extended precision LPF filter.
|
||||
*/
|
||||
if (se->se_lastupdate == 0) /* first sample */
|
||||
se->se_avgrssi = RSSI_IN(rssi);
|
||||
else /* avg w/ previous samples */
|
||||
RSSI_LPF(se->se_avgrssi, rssi);
|
||||
se->base.se_rssi = RSSI_GET(se->se_avgrssi);
|
||||
ise->se_rtsf = rtsf;
|
||||
memcpy(ise->se_tstamp.data, sp->tstamp, sizeof(ise->se_tstamp));
|
||||
ise->se_intval = sp->bintval;
|
||||
ise->se_capinfo = sp->capinfo;
|
||||
ise->se_chan = ic->ic_curchan;
|
||||
ise->se_fhdwell = sp->fhdwell;
|
||||
ise->se_fhindex = sp->fhindex;
|
||||
ise->se_erp = sp->erp;
|
||||
ise->se_timoff = sp->timoff;
|
||||
if (sp->tim != NULL) {
|
||||
const struct ieee80211_tim_ie *tim =
|
||||
(const struct ieee80211_tim_ie *) sp->tim;
|
||||
ise->se_dtimperiod = tim->tim_period;
|
||||
}
|
||||
saveie(&ise->se_wme_ie, sp->wme);
|
||||
saveie(&ise->se_wpa_ie, sp->wpa);
|
||||
saveie(&ise->se_rsn_ie, sp->rsn);
|
||||
saveie(&ise->se_ath_ie, sp->ath);
|
||||
|
||||
se->se_lastupdate = jiffies; /* update time */
|
||||
se->se_seen = 1;
|
||||
se->se_notseen = 0;
|
||||
|
||||
SCAN_AP_UNLOCK_IRQ(as);
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
@ -271,15 +571,20 @@ ap_add(struct ieee80211_scan_state *ss, const struct ieee80211_scanparams *sp,
|
||||
*/
|
||||
static int
|
||||
ap_end(struct ieee80211_scan_state *ss, struct ieee80211vap *vap,
|
||||
int (*action)(struct ieee80211vap *, const struct ieee80211_scan_entry *),
|
||||
u_int32_t flags)
|
||||
int (*action)(struct ieee80211vap *, const struct ieee80211_scan_entry *),
|
||||
u_int32_t flags)
|
||||
{
|
||||
struct ap_state *as = ss->ss_priv;
|
||||
struct ieee80211com *ic = vap->iv_ic;
|
||||
struct ieee80211com *ic = NULL;
|
||||
int res = 1;
|
||||
int i, chan, bestchan, bestchanix;
|
||||
|
||||
SCAN_AP_LOCK_IRQ(as);
|
||||
|
||||
KASSERT(vap->iv_opmode == IEEE80211_M_HOSTAP,
|
||||
("wrong opmode %u", vap->iv_opmode));
|
||||
|
||||
ic = vap->iv_ic;
|
||||
/* XXX select channel more intelligently, e.g. channel spread, power */
|
||||
bestchan = -1;
|
||||
bestchanix = 0; /* NB: silence compiler */
|
||||
@ -333,7 +638,7 @@ ap_end(struct ieee80211_scan_state *ss, struct ieee80211vap *vap,
|
||||
"%s: no suitable channel! (should not happen)\n", __func__);
|
||||
/* XXX print something? */
|
||||
}
|
||||
return 0; /* restart scan */
|
||||
res = 0; /* restart scan */
|
||||
} else {
|
||||
struct ieee80211_channel *c;
|
||||
struct ieee80211_scan_entry se;
|
||||
@ -361,22 +666,65 @@ ap_end(struct ieee80211_scan_state *ss, struct ieee80211vap *vap,
|
||||
* state machine, which would result in recursive locking.
|
||||
*/
|
||||
IEEE80211_SCHEDULE_TQUEUE(&as->as_actiontq);
|
||||
return 1;
|
||||
res = 1;
|
||||
}
|
||||
SCAN_AP_UNLOCK_IRQ(as);
|
||||
return res;
|
||||
}
|
||||
|
||||
static void
|
||||
ap_age(struct ieee80211_scan_state *ss)
|
||||
{
|
||||
/* XXX is there anything meaningful to do? */
|
||||
struct ap_state *as = ss->ss_priv;
|
||||
struct scan_entry *se, *next;
|
||||
|
||||
SCAN_AP_LOCK_IRQ(as);
|
||||
TAILQ_FOREACH_SAFE(se, &as->as_entry, se_list, next) {
|
||||
if (se->se_notseen > AP_PURGE_SCANS) {
|
||||
TAILQ_REMOVE(&as->as_entry, se, se_list);
|
||||
LIST_REMOVE(se, se_hash);
|
||||
FREE(se, M_80211_SCAN);
|
||||
}
|
||||
}
|
||||
SCAN_AP_UNLOCK_IRQ(as);
|
||||
}
|
||||
|
||||
static int
|
||||
ap_iterate(struct ieee80211_scan_state *ss,
|
||||
ieee80211_scan_iter_func *f, void *arg)
|
||||
{
|
||||
/* NB: nothing meaningful we can do */
|
||||
return 0;
|
||||
struct ap_state *as = ss->ss_priv;
|
||||
struct scan_entry *se;
|
||||
u_int gen;
|
||||
int res = 0;
|
||||
|
||||
SCAN_AP_GEN_LOCK(as);
|
||||
gen = as->as_scangen++;
|
||||
restart:
|
||||
SCAN_AP_LOCK_IRQ(as);
|
||||
TAILQ_FOREACH(se, &as->as_entry, se_list) {
|
||||
if (se->se_scangen != gen) {
|
||||
se->se_scangen = gen;
|
||||
/* update public state */
|
||||
se->base.se_age = jiffies - se->se_lastupdate;
|
||||
SCAN_AP_UNLOCK_IRQ_EARLY(as);
|
||||
|
||||
res = (*f)(arg, &se->base);
|
||||
|
||||
/* We probably ran out of buffer space. */
|
||||
if (res != 0)
|
||||
goto done;
|
||||
|
||||
goto restart;
|
||||
}
|
||||
}
|
||||
|
||||
SCAN_AP_UNLOCK_IRQ(as);
|
||||
|
||||
done:
|
||||
SCAN_AP_GEN_UNLOCK(as);
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
static void
|
||||
@ -402,6 +750,7 @@ ap_default_action(struct ieee80211vap *vap,
|
||||
const struct ieee80211_scan_entry *se)
|
||||
{
|
||||
ieee80211_create_ibss(vap, se->se_chan);
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
@ -411,6 +760,25 @@ action_tasklet(IEEE80211_TQUEUE_ARG data)
|
||||
struct ieee80211_scan_state *ss = (struct ieee80211_scan_state *)data;
|
||||
struct ap_state *as = (struct ap_state *)ss->ss_priv;
|
||||
struct ieee80211vap *vap = ss->ss_vap;
|
||||
SCAN_AP_LOCK_IRQ(as);
|
||||
if (as->as_newscan) {
|
||||
struct scan_entry *se;
|
||||
TAILQ_FOREACH(se, &as->as_entry, se_list) {
|
||||
/*
|
||||
* If seen then reset and don't bump the count;
|
||||
* otherwise bump the ``not seen'' count. Note
|
||||
* that this ensures that stations for which we
|
||||
* see frames while not scanning but not during
|
||||
* this scan will not be penalized.
|
||||
*/
|
||||
if (se->se_seen)
|
||||
se->se_seen = 0;
|
||||
else
|
||||
se->se_notseen++;
|
||||
}
|
||||
as->as_newscan = 0;
|
||||
}
|
||||
SCAN_AP_UNLOCK_IRQ(as);
|
||||
|
||||
(*ss->ss_ops->scan_default)(vap, &as->as_selbss);
|
||||
}
|
||||
@ -441,6 +809,7 @@ static const struct ieee80211_scanner ap_default = {
|
||||
.scan_default = ap_default_action,
|
||||
};
|
||||
|
||||
|
||||
static int __init
|
||||
init_scanner_ap(void)
|
||||
{
|
||||
|
||||
@ -1647,16 +1647,9 @@ giwscan_cb(void *arg, const struct ieee80211_scan_entry *se)
|
||||
last_ev = current_ev;
|
||||
iwe.cmd = SIOCGIWESSID;
|
||||
iwe.u.data.flags = 1;
|
||||
if (vap->iv_opmode == IEEE80211_M_HOSTAP) {
|
||||
iwe.u.data.length = vap->iv_des_nssid > 0 ?
|
||||
vap->iv_des_ssid[0].len : 0;
|
||||
current_ev = iwe_stream_add_point(current_ev,
|
||||
end_buf, &iwe, vap->iv_des_ssid[0].ssid);
|
||||
} else {
|
||||
iwe.u.data.length = se->se_ssid[1];
|
||||
current_ev = iwe_stream_add_point(current_ev,
|
||||
end_buf, &iwe, (char *) se->se_ssid+2);
|
||||
}
|
||||
iwe.u.data.length = se->se_ssid[1];
|
||||
current_ev = iwe_stream_add_point(current_ev,
|
||||
end_buf, &iwe, (char *) se->se_ssid+2);
|
||||
|
||||
/* We ran out of space in the buffer. */
|
||||
if (last_ev == current_ev)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user