/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
* sending probe req. This should be set long enough to hear probe responses
* from more than one AP. */
-#define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
-#define IWL_ACTIVE_DWELL_TIME_52 (10)
+#define IWL_ACTIVE_DWELL_TIME_24 (30) /* all times in msec */
+#define IWL_ACTIVE_DWELL_TIME_52 (20)
+
+#define IWL_ACTIVE_DWELL_FACTOR_24GHZ (3)
+#define IWL_ACTIVE_DWELL_FACTOR_52GHZ (2)
/* For faster active scanning, scan will move to the next channel if fewer than
* PLCP_QUIET_THRESH packets are heard on this channel within
* no other traffic).
* Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
#define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
-#define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
+#define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(10) /* msec */
/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
* Must be set longer than active dwell time.
#define IWL_PASSIVE_DWELL_BASE (100)
#define IWL_CHANNEL_TUNE_TIME 5
-static int scan_tx_ant[3] = {
- RATE_MCS_ANT_A_MSK, RATE_MCS_ANT_B_MSK, RATE_MCS_ANT_C_MSK
-};
+#define IWL_SCAN_PROBE_MASK(n) cpu_to_le32((BIT(n) | (BIT(n) - BIT(1))))
+
static int iwl_is_empty_essid(const char *essid, int essid_len)
{
-const char *iwl_escape_essid(const char *essid, u8 essid_len)
+static const char *iwl_escape_essid(const char *essid, u8 essid_len)
{
static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
const char *s = essid;
*d = '\0';
return escaped;
}
-EXPORT_SYMBOL(iwl_escape_essid);
/**
* iwl_scan_cancel - Cancel any currently executing HW scan
clear_bit(STATUS_SCAN_HW, &priv->status);
}
+ priv->alloc_rxb_skb--;
dev_kfree_skb_any(cmd.meta.u.skb);
return ret;
"(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
notif->channel,
notif->band ? "bg" : "a",
- notif->tsf_high,
- notif->tsf_low, notif->status, notif->beacon_timer);
+ le32_to_cpu(notif->tsf_high),
+ le32_to_cpu(notif->tsf_low),
+ notif->status, notif->beacon_timer);
}
/* Service SCAN_RESULTS_NOTIFICATION (0x83) */
static void iwl_rx_scan_complete_notif(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
+#ifdef CONFIG_IWLWIFI_DEBUG
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
scan_notif->scanned_channels,
scan_notif->tsf_low,
scan_notif->tsf_high, scan_notif->status);
+#endif
/* The HW is no longer scanning */
clear_bit(STATUS_SCAN_HW, &priv->status);
cancel_delayed_work(&priv->scan_check);
IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
- (priv->scan_bands == 2) ? "2.4" : "5.2",
+ (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
+ "2.4" : "5.2",
jiffies_to_msecs(elapsed_jiffies
(priv->scan_pass_start, jiffies)));
- /* Remove this scanned band from the list
- * of pending bands to scan */
- priv->scan_bands--;
+ /* Remove this scanned band from the list of pending
+ * bands to scan, band G precedes A in order of scanning
+ * as seen in iwl_bg_request_scan */
+ if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
+ priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
+ else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ))
+ priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
/* If a request to abort was given, or the scan did not succeed
* then we reset the scan state machine and terminate,
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
} else {
/* If there are more bands on this scan pass reschedule */
- if (priv->scan_bands > 0)
+ if (priv->scan_bands)
goto reschedule;
}
EXPORT_SYMBOL(iwl_setup_rx_scan_handlers);
static inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv,
- enum ieee80211_band band)
+ enum ieee80211_band band,
+ u8 n_probes)
{
if (band == IEEE80211_BAND_5GHZ)
- return IWL_ACTIVE_DWELL_TIME_52;
+ return IWL_ACTIVE_DWELL_TIME_52 +
+ IWL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1);
else
- return IWL_ACTIVE_DWELL_TIME_24;
+ return IWL_ACTIVE_DWELL_TIME_24 +
+ IWL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1);
}
static u16 iwl_get_passive_dwell_time(struct iwl_priv *priv,
- enum ieee80211_band band)
+ enum ieee80211_band band)
{
- u16 active = iwl_get_active_dwell_time(priv, band);
- u16 passive = (band != IEEE80211_BAND_5GHZ) ?
+ u16 passive = (band == IEEE80211_BAND_2GHZ) ?
IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
}
- if (passive <= active)
- passive = active + 1;
-
return passive;
}
static int iwl_get_channels_for_scan(struct iwl_priv *priv,
enum ieee80211_band band,
- u8 is_active, u8 direct_mask,
+ u8 is_active, u8 n_probes,
struct iwl_scan_channel *scan_ch)
{
const struct ieee80211_channel *channels = NULL;
u16 passive_dwell = 0;
u16 active_dwell = 0;
int added, i;
+ u16 channel;
sband = iwl_get_hw_mode(priv, band);
if (!sband)
channels = sband->channels;
- active_dwell = iwl_get_active_dwell_time(priv, band);
+ active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
passive_dwell = iwl_get_passive_dwell_time(priv, band);
+ if (passive_dwell <= active_dwell)
+ passive_dwell = active_dwell + 1;
+
for (i = 0, added = 0; i < sband->n_channels; i++) {
if (channels[i].flags & IEEE80211_CHAN_DISABLED)
continue;
- scan_ch->channel =
+ channel =
ieee80211_frequency_to_channel(channels[i].center_freq);
+ scan_ch->channel = cpu_to_le16(channel);
- ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
+ ch_info = iwl_get_channel_info(priv, band, channel);
if (!is_channel_valid(ch_info)) {
- IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
- scan_ch->channel);
+ IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
+ channel);
continue;
}
if (!is_active || is_channel_passive(ch_info) ||
(channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
- scan_ch->type = 0;
+ scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE;
else
- scan_ch->type = 1;
+ scan_ch->type = SCAN_CHANNEL_TYPE_ACTIVE;
- if (scan_ch->type & 1)
- scan_ch->type |= (direct_mask << 1);
+ if (n_probes)
+ scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
scan_ch->active_dwell = cpu_to_le16(active_dwell);
scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
/* Set txpower levels to defaults */
scan_ch->dsp_atten = 110;
+ /* NOTE: if we were doing 6Mb OFDM for scans we'd use
+ * power level:
+ * scan_ch->tx_gain = ((1 << 5) | (2 << 3)) | 3;
+ */
if (band == IEEE80211_BAND_5GHZ)
scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3;
- else {
+ else
scan_ch->tx_gain = ((1 << 5) | (5 << 3));
- /* NOTE: if we were doing 6Mb OFDM for scans we'd use
- * power level:
- * scan_ch->tx_gain = ((1 << 5) | (2 << 3)) | 3;
- */
- }
- IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
- scan_ch->channel,
- (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
- (scan_ch->type & 1) ?
+ IWL_DEBUG_SCAN("Scanning ch=%d prob=0x%X [%s %d]\n",
+ channel, le32_to_cpu(scan_ch->type),
+ (scan_ch->type & SCAN_CHANNEL_TYPE_ACTIVE) ?
+ "ACTIVE" : "PASSIVE",
+ (scan_ch->type & SCAN_CHANNEL_TYPE_ACTIVE) ?
active_dwell : passive_dwell);
scan_ch++;
void iwl_init_scan_params(struct iwl_priv *priv)
{
+ u8 ant_idx = fls(priv->hw_params.valid_tx_ant) - 1;
if (!priv->scan_tx_ant[IEEE80211_BAND_5GHZ])
- priv->scan_tx_ant[IEEE80211_BAND_5GHZ] = RATE_MCS_ANT_INIT_IND;
+ priv->scan_tx_ant[IEEE80211_BAND_5GHZ] = ant_idx;
if (!priv->scan_tx_ant[IEEE80211_BAND_2GHZ])
- priv->scan_tx_ant[IEEE80211_BAND_2GHZ] = RATE_MCS_ANT_INIT_IND;
+ priv->scan_tx_ant[IEEE80211_BAND_2GHZ] = ant_idx;
}
int iwl_scan_initiate(struct iwl_priv *priv)
{
- if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
- IWL_ERROR("APs don't scan.\n");
- return 0;
- }
-
if (!iwl_is_ready_rf(priv)) {
IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
return -EIO;
}
if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
- IWL_DEBUG_SCAN("Scan request while abort pending. "
- "Queuing.\n");
+ IWL_DEBUG_SCAN("Scan request while abort pending\n");
return -EAGAIN;
}
IWL_DEBUG_INFO("Starting scan...\n");
- priv->scan_bands = 2;
+ if (priv->cfg->sku & IWL_SKU_G)
+ priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
+ if (priv->cfg->sku & IWL_SKU_A)
+ priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
set_bit(STATUS_SCANNING, &priv->status);
priv->scan_start = jiffies;
priv->scan_pass_start = priv->scan_start;
{
struct ieee80211_ht_cap *ht_cap;
- if (!sband || !sband->ht_info.ht_supported)
+ if (!sband || !sband->ht_cap.ht_supported)
return;
if (*left < sizeof(struct ieee80211_ht_cap))
*pos++ = sizeof(struct ieee80211_ht_cap);
ht_cap = (struct ieee80211_ht_cap *) pos;
- ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
- memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
+ ht_cap->cap_info = cpu_to_le16(sband->ht_cap.cap);
+ memcpy(&ht_cap->mcs, &sband->ht_cap.mcs, 16);
ht_cap->ampdu_params_info =
- (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
- ((sband->ht_info.ampdu_density << 2) &
- IEEE80211_HT_CAP_AMPDU_DENSITY);
+ (sband->ht_cap.ampdu_factor & IEEE80211_HT_AMPDU_PARM_FACTOR) |
+ ((sband->ht_cap.ampdu_density << 2) &
+ IEEE80211_HT_AMPDU_PARM_DENSITY);
*left -= sizeof(struct ieee80211_ht_cap);
}
return (u16)len;
}
-static u32 iwl_scan_tx_ant(struct iwl_priv *priv, enum ieee80211_band band)
-{
- int i, ind;
-
- ind = priv->scan_tx_ant[band];
- for (i = 0; i < priv->hw_params.tx_chains_num; i++) {
- ind = (ind+1) >= priv->hw_params.tx_chains_num ? 0 : ind+1;
- if (priv->hw_params.valid_tx_ant & (1 << ind)) {
- priv->scan_tx_ant[band] = ind;
- break;
- }
- }
-
- return scan_tx_ant[ind];
-}
-
-
static void iwl_bg_request_scan(struct work_struct *data)
{
struct iwl_priv *priv =
struct iwl_scan_cmd *scan;
struct ieee80211_conf *conf = NULL;
int ret = 0;
- u32 tx_ant;
+ u32 rate_flags = 0;
u16 cmd_len;
enum ieee80211_band band;
- u8 direct_mask;
- u8 rx_chain = 0x7; /* bitmap: ABC chains */
+ u8 n_probes = 2;
+ u8 rx_chain = priv->hw_params.valid_rx_ant;
+ u8 rate;
conf = ieee80211_get_hw_conf(priv->hw);
scan->direct_scan[0].len = priv->direct_ssid_len;
memcpy(scan->direct_scan[0].ssid,
priv->direct_ssid, priv->direct_ssid_len);
- direct_mask = 1;
+ n_probes++;
} else if (!iwl_is_associated(priv) && priv->essid_len) {
IWL_DEBUG_SCAN("Start direct scan for '%s' (not associated)\n",
iwl_escape_essid(priv->essid, priv->essid_len));
scan->direct_scan[0].id = WLAN_EID_SSID;
scan->direct_scan[0].len = priv->essid_len;
memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
- direct_mask = 1;
+ n_probes++;
} else {
IWL_DEBUG_SCAN("Start indirect scan.\n");
- direct_mask = 0;
}
scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
- switch (priv->scan_bands) {
- case 2:
+ if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
band = IEEE80211_BAND_2GHZ;
scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
- tx_ant = iwl_scan_tx_ant(priv, band);
- if (priv->active_rxon.flags & RXON_FLG_CHANNEL_MODE_PURE_40_MSK)
- scan->tx_cmd.rate_n_flags =
- iwl_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
- tx_ant);
- else
- scan->tx_cmd.rate_n_flags =
- iwl_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
- tx_ant |
- RATE_MCS_CCK_MSK);
+ if (priv->active_rxon.flags & RXON_FLG_CHANNEL_MODE_PURE_40_MSK) {
+ rate = IWL_RATE_6M_PLCP;
+ } else {
+ rate = IWL_RATE_1M_PLCP;
+ rate_flags = RATE_MCS_CCK_MSK;
+ }
scan->good_CRC_th = 0;
- break;
-
- case 1:
+ } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
band = IEEE80211_BAND_5GHZ;
- tx_ant = iwl_scan_tx_ant(priv, band);
- scan->tx_cmd.rate_n_flags =
- iwl_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
- tx_ant);
+ rate = IWL_RATE_6M_PLCP;
scan->good_CRC_th = IWL_GOOD_CRC_TH;
/* Force use of chains B and C (0x6) for scan Rx for 4965
* Avoid A (0x1) because of its off-channel reception on A-band.
- * MIMO is not used here, but value is required */
+ */
if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)
rx_chain = 0x6;
-
- break;
- default:
+ } else {
IWL_WARNING("Invalid scan band count\n");
goto done;
}
+ priv->scan_tx_ant[band] =
+ iwl_toggle_tx_ant(priv, priv->scan_tx_ant[band]);
+ rate_flags |= iwl_ant_idx_to_flags(priv->scan_tx_ant[band]);
+ scan->tx_cmd.rate_n_flags = iwl_hw_set_rate_n_flags(rate, rate_flags);
+
+ /* MIMO is not used here, but value is required */
scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
(rx_chain << RXON_RX_CHAIN_FORCE_SEL_POS) |
scan->tx_cmd.len = cpu_to_le16(cmd_len);
- if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
+ if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
scan->filter_flags = RXON_FILTER_PROMISC_MSK;
scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
RXON_FILTER_BCON_AWARE_MSK);
- if (direct_mask)
- scan->channel_count =
- iwl_get_channels_for_scan(priv, band, 1, /* active */
- direct_mask,
- (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
- else
- scan->channel_count =
- iwl_get_channels_for_scan(priv, band, 0, /* passive */
- direct_mask,
- (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
+ scan->channel_count =
+ iwl_get_channels_for_scan(priv, band, 1, /* active */
+ n_probes,
+ (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
+
if (scan->channel_count == 0) {
IWL_DEBUG_SCAN("channel count %d\n", scan->channel_count);
goto done;
mutex_unlock(&priv->mutex);
}
+static void iwl_bg_scan_completed(struct work_struct *work)
+{
+ struct iwl_priv *priv =
+ container_of(work, struct iwl_priv, scan_completed);
+
+ IWL_DEBUG_SCAN("SCAN complete scan\n");
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+
+ ieee80211_scan_completed(priv->hw);
+
+ /* Since setting the TXPOWER may have been deferred while
+ * performing the scan, fire one off */
+ mutex_lock(&priv->mutex);
+ iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
+ mutex_unlock(&priv->mutex);
+}
+
+
void iwl_setup_scan_deferred_work(struct iwl_priv *priv)
{
- /* FIXME: move here when resolved PENDING
- * INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed); */
+ INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
INIT_WORK(&priv->request_scan, iwl_bg_request_scan);
INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff