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Differential D5148 Diff 12899 sys/net80211/ieee80211_scan_sw.c

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sys/net80211/ieee80211_scan_sw.c

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#define ROAM_RATE_11B_DEFAULT 2*5 /* 11b bss */ #define ROAM_RATE_11B_DEFAULT 2*5 /* 11b bss */
#define ROAM_RATE_11BONLY_DEFAULT 2*1 /* 11b-only bss */ #define ROAM_RATE_11BONLY_DEFAULT 2*1 /* 11b-only bss */
#define ROAM_RATE_HALF_DEFAULT 2*6 /* half-width 11a/g bss */ #define ROAM_RATE_HALF_DEFAULT 2*6 /* half-width 11a/g bss */
#define ROAM_RATE_QUARTER_DEFAULT 2*3 /* quarter-width 11a/g bss */ #define ROAM_RATE_QUARTER_DEFAULT 2*3 /* quarter-width 11a/g bss */
#define ROAM_MCS_11N_DEFAULT (1 | IEEE80211_RATE_MCS) /* 11n bss */ #define ROAM_MCS_11N_DEFAULT (1 | IEEE80211_RATE_MCS) /* 11n bss */
static void scan_curchan(struct ieee80211_scan_state *, unsigned long); static void scan_curchan(struct ieee80211_scan_state *, unsigned long);
static void scan_mindwell(struct ieee80211_scan_state *); static void scan_mindwell(struct ieee80211_scan_state *);
static void scan_signal(void *); static void scan_signal(struct ieee80211_scan_state *, int);
static void scan_signal_locked(struct ieee80211_scan_state *, int);
static void scan_start(void *, int); static void scan_start(void *, int);
static void scan_curchan_task(void *, int); static void scan_curchan_task(void *, int);
static void scan_end(struct ieee80211_scan_state *, int); static void scan_end(struct ieee80211_scan_state *, int);
static void scan_done(struct ieee80211_scan_state *, int); static void scan_done(struct ieee80211_scan_state *, int);
MALLOC_DEFINE(M_80211_SCAN, "80211scan", "802.11 scan state"); MALLOC_DEFINE(M_80211_SCAN, "80211scan", "802.11 scan state");
static void static void
ieee80211_swscan_detach(struct ieee80211com *ic) ieee80211_swscan_detach(struct ieee80211com *ic)
{ {
struct ieee80211_scan_state *ss = ic->ic_scan; struct ieee80211_scan_state *ss = ic->ic_scan;
if (ss != NULL) { if (ss != NULL) {
IEEE80211_LOCK(ic); scan_signal(ss, ISCAN_ABORT);
SCAN_PRIVATE(ss)->ss_iflags |= ISCAN_ABORT;
scan_signal(ss);
IEEE80211_UNLOCK(ic);
ieee80211_draintask(ic, &SCAN_PRIVATE(ss)->ss_scan_start); ieee80211_draintask(ic, &SCAN_PRIVATE(ss)->ss_scan_start);
taskqueue_drain_timeout(ic->ic_tq, taskqueue_drain_timeout(ic->ic_tq,
&SCAN_PRIVATE(ss)->ss_scan_curchan); &SCAN_PRIVATE(ss)->ss_scan_curchan);
KASSERT((ic->ic_flags & IEEE80211_F_SCAN) == 0, KASSERT((ic->ic_flags & IEEE80211_F_SCAN) == 0,
("scan still running")); ("scan still running"));
/* /*
* For now, do the ss_ops detach here rather * For now, do the ss_ops detach here rather
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ieee80211_swscan_vdetach(struct ieee80211vap *vap) ieee80211_swscan_vdetach(struct ieee80211vap *vap)
{ {
struct ieee80211com *ic = vap->iv_ic; struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_scan_state *ss; struct ieee80211_scan_state *ss;
IEEE80211_LOCK_ASSERT(ic); IEEE80211_LOCK_ASSERT(ic);
ss = ic->ic_scan; ss = ic->ic_scan;
if (ss != NULL && ss->ss_vap == vap) { if (ss != NULL && ss->ss_vap == vap) {
if (ic->ic_flags & IEEE80211_F_SCAN) { if (ic->ic_flags & IEEE80211_F_SCAN)
SCAN_PRIVATE(ss)->ss_iflags |= ISCAN_ABORT; scan_signal_locked(ss, ISCAN_ABORT);
scan_signal(ss);
} }
} }
}
static void static void
ieee80211_swscan_set_scan_duration(struct ieee80211vap *vap, u_int duration) ieee80211_swscan_set_scan_duration(struct ieee80211vap *vap, u_int duration)
{ {
struct ieee80211com *ic = vap->iv_ic; struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_scan_state *ss = ic->ic_scan; struct ieee80211_scan_state *ss = ic->ic_scan;
IEEE80211_LOCK_ASSERT(ic); IEEE80211_LOCK_ASSERT(ic);
▲ Show 20 Lines • Show All 267 Lines • ▼ Show 20 Linescancel_scan(struct ieee80211vap *vap, int any, const char *func)
if ((ic->ic_flags & IEEE80211_F_SCAN) && if ((ic->ic_flags & IEEE80211_F_SCAN) &&
(any || ss->ss_vap == vap) && (any || ss->ss_vap == vap) &&
(SCAN_PRIVATE(ss)->ss_iflags & ISCAN_CANCEL) == 0) { (SCAN_PRIVATE(ss)->ss_iflags & ISCAN_CANCEL) == 0) {
IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN,
"%s: cancel %s scan\n", func, "%s: cancel %s scan\n", func,
ss->ss_flags & IEEE80211_SCAN_ACTIVE ? ss->ss_flags & IEEE80211_SCAN_ACTIVE ?
"active" : "passive"); "active" : "passive");
/* clear bg scan NOPICK and mark cancel request */ /* clear bg scan NOPICK */
ss->ss_flags &= ~IEEE80211_SCAN_NOPICK; ss->ss_flags &= ~IEEE80211_SCAN_NOPICK;
SCAN_PRIVATE(ss)->ss_iflags |= ISCAN_CANCEL; /* mark cancel request and wake up the scan task */
/* wake up the scan task */ scan_signal_locked(ss, ISCAN_CANCEL);
scan_signal(ss);
} else { } else {
IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN,
"%s: called; F_SCAN=%d, vap=%s, CANCEL=%d\n", "%s: called; F_SCAN=%d, vap=%s, CANCEL=%d\n",
func, func,
!! (ic->ic_flags & IEEE80211_F_SCAN), !! (ic->ic_flags & IEEE80211_F_SCAN),
(ss->ss_vap == vap ? "match" : "nomatch"), (ss->ss_vap == vap ? "match" : "nomatch"),
!! (SCAN_PRIVATE(ss)->ss_iflags & ISCAN_CANCEL)); !! (SCAN_PRIVATE(ss)->ss_iflags & ISCAN_CANCEL));
} }
Show All 21 Lines
/* /*
* Manually switch to the next channel in the channel list. * Manually switch to the next channel in the channel list.
* Provided for drivers that manage scanning themselves * Provided for drivers that manage scanning themselves
* (e.g. for firmware-based devices). * (e.g. for firmware-based devices).
*/ */
static void static void
ieee80211_swscan_scan_next(struct ieee80211vap *vap) ieee80211_swscan_scan_next(struct ieee80211vap *vap)
{ {
struct ieee80211com *ic = vap->iv_ic; struct ieee80211_scan_state *ss = vap->iv_ic->ic_scan;
struct ieee80211_scan_state *ss = ic->ic_scan;
IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s: called\n", __func__); IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s: called\n", __func__);
/* wake up the scan task */ /* wake up the scan task */
IEEE80211_LOCK(ic); scan_signal(ss, 0);
scan_signal(ss);
IEEE80211_UNLOCK(ic);
} }
/* /*
* Manually stop a scan that is currently running. * Manually stop a scan that is currently running.
* Provided for drivers that are not able to scan single channels * Provided for drivers that are not able to scan single channels
* (e.g. for firmware-based devices). * (e.g. for firmware-based devices).
*/ */
static void static void
ieee80211_swscan_scan_done(struct ieee80211vap *vap) ieee80211_swscan_scan_done(struct ieee80211vap *vap)
{ {
struct ieee80211com *ic = vap->iv_ic; struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_scan_state *ss; struct ieee80211_scan_state *ss;
IEEE80211_LOCK_ASSERT(ic); IEEE80211_LOCK_ASSERT(ic);
ss = ic->ic_scan; ss = ic->ic_scan;
scan_signal(ss); scan_signal_locked(ss, 0);
} }
/* /*
* Probe the current channel, if allowed, while scanning. * Probe the current channel, if allowed, while scanning.
* If the channel is not marked passive-only then send * If the channel is not marked passive-only then send
* a probe request immediately. Otherwise mark state and * a probe request immediately. Otherwise mark state and
* listen for beacons on the channel; if we receive something * listen for beacons on the channel; if we receive something
* then we'll transmit a probe request. * then we'll transmit a probe request.
▲ Show 20 Lines • Show All 41 Lines • ▼ Show 20 Linesscan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
if (ss->ss_flags & IEEE80211_SCAN_ACTIVE) if (ss->ss_flags & IEEE80211_SCAN_ACTIVE)
ieee80211_probe_curchan(vap, 0); ieee80211_probe_curchan(vap, 0);
taskqueue_enqueue_timeout(vap->iv_ic->ic_tq, taskqueue_enqueue_timeout(vap->iv_ic->ic_tq,
&SCAN_PRIVATE(ss)->ss_scan_curchan, maxdwell); &SCAN_PRIVATE(ss)->ss_scan_curchan, maxdwell);
IEEE80211_UNLOCK(vap->iv_ic); IEEE80211_UNLOCK(vap->iv_ic);
} }
static void static void
scan_signal(void *arg) scan_signal(struct ieee80211_scan_state *ss, int iflags)
{ {
struct ieee80211_scan_state *ss = (struct ieee80211_scan_state *) arg; struct ieee80211com *ic = ss->ss_ic;
IEEE80211_UNLOCK_ASSERT(ic);
IEEE80211_LOCK(ic);
scan_signal_locked(ss, iflags);
IEEE80211_UNLOCK(ic);
}
static void
scan_signal_locked(struct ieee80211_scan_state *ss, int iflags)
{
struct scan_state *ss_priv = SCAN_PRIVATE(ss); struct scan_state *ss_priv = SCAN_PRIVATE(ss);
struct timeout_task *scan_task = &ss_priv->ss_scan_curchan; struct timeout_task *scan_task = &ss_priv->ss_scan_curchan;
struct ieee80211com *ic = ss->ss_ic; struct ieee80211com *ic = ss->ss_ic;
IEEE80211_LOCK_ASSERT(ic); IEEE80211_LOCK_ASSERT(ic);
ss_priv->ss_iflags |= iflags;
if (ss_priv->ss_iflags & ISCAN_RUNNING) { if (ss_priv->ss_iflags & ISCAN_RUNNING) {
if (taskqueue_cancel_timeout(ic->ic_tq, scan_task, NULL) == 0) if (taskqueue_cancel_timeout(ic->ic_tq, scan_task, NULL) == 0)
taskqueue_enqueue_timeout(ic->ic_tq, scan_task, 0); taskqueue_enqueue_timeout(ic->ic_tq, scan_task, 0);
} }
} }
/* /*
* Handle mindwell requirements completed; initiate a channel * Handle mindwell requirements completed; initiate a channel
* change to the next channel asap. * change to the next channel asap.
*/ */
static void static void
scan_mindwell(struct ieee80211_scan_state *ss) scan_mindwell(struct ieee80211_scan_state *ss)
{ {
struct ieee80211com *ic = ss->ss_ic; struct ieee80211vap *vap = ss->ss_vap;
IEEE80211_DPRINTF(ss->ss_vap, IEEE80211_MSG_SCAN, "%s: called\n", __func__); IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s: called\n", __func__);
IEEE80211_LOCK(ic); scan_signal(ss, 0);
scan_signal(ss);
IEEE80211_UNLOCK(ic);
} }
static void static void
scan_start(void *arg, int pending) scan_start(void *arg, int pending)
{ {
#define ISCAN_REP (ISCAN_MINDWELL | ISCAN_DISCARD) #define ISCAN_REP (ISCAN_MINDWELL | ISCAN_DISCARD)
struct ieee80211_scan_state *ss = (struct ieee80211_scan_state *) arg; struct ieee80211_scan_state *ss = (struct ieee80211_scan_state *) arg;
struct scan_state *ss_priv = SCAN_PRIVATE(ss); struct scan_state *ss_priv = SCAN_PRIVATE(ss);
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