diff options
Diffstat (limited to 'drivers/net/wireless/wl12xx/wl1271_scan.c')
-rw-r--r-- | drivers/net/wireless/wl12xx/wl1271_scan.c | 83 |
1 files changed, 66 insertions, 17 deletions
diff --git a/drivers/net/wireless/wl12xx/wl1271_scan.c b/drivers/net/wireless/wl12xx/wl1271_scan.c index fec43eed8c55..909bb47995b6 100644 --- a/drivers/net/wireless/wl12xx/wl1271_scan.c +++ b/drivers/net/wireless/wl12xx/wl1271_scan.c @@ -28,11 +28,43 @@ #include "wl1271_scan.h" #include "wl1271_acx.h" +void wl1271_scan_complete_work(struct work_struct *work) +{ + struct delayed_work *dwork; + struct wl1271 *wl; + + dwork = container_of(work, struct delayed_work, work); + wl = container_of(dwork, struct wl1271, scan_complete_work); + + wl1271_debug(DEBUG_SCAN, "Scanning complete"); + + mutex_lock(&wl->mutex); + + if (wl->scan.state == WL1271_SCAN_STATE_IDLE) { + mutex_unlock(&wl->mutex); + return; + } + + wl->scan.state = WL1271_SCAN_STATE_IDLE; + kfree(wl->scan.scanned_ch); + wl->scan.scanned_ch = NULL; + mutex_unlock(&wl->mutex); + + ieee80211_scan_completed(wl->hw, false); + + if (wl->scan.failed) { + wl1271_info("Scan completed due to error."); + ieee80211_queue_work(wl->hw, &wl->recovery_work); + } +} + + static int wl1271_get_scan_channels(struct wl1271 *wl, struct cfg80211_scan_request *req, struct basic_scan_channel_params *channels, enum ieee80211_band band, bool passive) { + struct conf_scan_settings *c = &wl->conf.scan; int i, j; u32 flags; @@ -60,10 +92,17 @@ static int wl1271_get_scan_channels(struct wl1271 *wl, wl1271_debug(DEBUG_SCAN, "beacon_found %d", req->channels[i]->beacon_found); - channels[j].min_duration = - cpu_to_le32(WL1271_SCAN_CHAN_MIN_DURATION); - channels[j].max_duration = - cpu_to_le32(WL1271_SCAN_CHAN_MAX_DURATION); + if (!passive) { + channels[j].min_duration = + cpu_to_le32(c->min_dwell_time_active); + channels[j].max_duration = + cpu_to_le32(c->max_dwell_time_active); + } else { + channels[j].min_duration = + cpu_to_le32(c->min_dwell_time_passive); + channels[j].max_duration = + cpu_to_le32(c->max_dwell_time_passive); + } channels[j].early_termination = 0; channels[j].tx_power_att = req->channels[i]->max_power; channels[j].channel = req->channels[i]->hw_value; @@ -100,8 +139,11 @@ static int wl1271_scan_send(struct wl1271 *wl, enum ieee80211_band band, /* We always use high priority scans */ scan_options = WL1271_SCAN_OPT_PRIORITY_HIGH; - if(passive) + + /* No SSIDs means that we have a forced passive scan */ + if (passive || wl->scan.req->n_ssids == 0) scan_options |= WL1271_SCAN_OPT_PASSIVE; + cmd->params.scan_options = cpu_to_le16(scan_options); cmd->params.n_ch = wl1271_get_scan_channels(wl, wl->scan.req, @@ -117,7 +159,7 @@ static int wl1271_scan_send(struct wl1271 *wl, enum ieee80211_band band, cmd->params.rx_filter_options = cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN); - cmd->params.n_probe_reqs = WL1271_SCAN_PROBE_REQS; + cmd->params.n_probe_reqs = wl->conf.scan.num_probe_reqs; cmd->params.tx_rate = cpu_to_le32(basic_rate); cmd->params.tid_trigger = 0; cmd->params.scan_tag = WL1271_SCAN_DEFAULT_TAG; @@ -165,7 +207,7 @@ out: void wl1271_scan_stm(struct wl1271 *wl) { - int ret; + int ret = 0; switch (wl->scan.state) { case WL1271_SCAN_STATE_IDLE: @@ -185,7 +227,7 @@ void wl1271_scan_stm(struct wl1271 *wl) ret = wl1271_scan_send(wl, IEEE80211_BAND_2GHZ, true, wl->conf.tx.basic_rate); if (ret == WL1271_NOTHING_TO_SCAN) { - if (wl1271_11a_enabled()) + if (wl->enable_11a) wl->scan.state = WL1271_SCAN_STATE_5GHZ_ACTIVE; else wl->scan.state = WL1271_SCAN_STATE_DONE; @@ -215,20 +257,22 @@ void wl1271_scan_stm(struct wl1271 *wl) break; case WL1271_SCAN_STATE_DONE: - mutex_unlock(&wl->mutex); - ieee80211_scan_completed(wl->hw, false); - mutex_lock(&wl->mutex); - - kfree(wl->scan.scanned_ch); - wl->scan.scanned_ch = NULL; - - wl->scan.state = WL1271_SCAN_STATE_IDLE; + wl->scan.failed = false; + cancel_delayed_work(&wl->scan_complete_work); + ieee80211_queue_delayed_work(wl->hw, &wl->scan_complete_work, + msecs_to_jiffies(0)); break; default: wl1271_error("invalid scan state"); break; } + + if (ret < 0) { + cancel_delayed_work(&wl->scan_complete_work); + ieee80211_queue_delayed_work(wl->hw, &wl->scan_complete_work, + msecs_to_jiffies(0)); + } } int wl1271_scan(struct wl1271 *wl, const u8 *ssid, size_t ssid_len, @@ -248,9 +292,14 @@ int wl1271_scan(struct wl1271 *wl, const u8 *ssid, size_t ssid_len, wl->scan.req = req; - wl->scan.scanned_ch = kzalloc(req->n_channels * + wl->scan.scanned_ch = kcalloc(req->n_channels, sizeof(*wl->scan.scanned_ch), GFP_KERNEL); + /* we assume failure so that timeout scenarios are handled correctly */ + wl->scan.failed = true; + ieee80211_queue_delayed_work(wl->hw, &wl->scan_complete_work, + msecs_to_jiffies(WL1271_SCAN_TIMEOUT)); + wl1271_scan_stm(wl); return 0; |