*
* GPL LICENSE SUMMARY
*
- * Copyright(c) 2008 Intel Corporation. All rights reserved.
+ * Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* in the file called LICENSE.GPL.
*
* Contact Information:
- * Tomas Winkler <tomas.winkler@intel.com>
+ * Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*****************************************************************************/
-#include <net/mac80211.h>
+#include <linux/slab.h>
+#include <linux/types.h>
#include <linux/etherdevice.h>
+#include <net/mac80211.h>
#include "iwl-eeprom.h"
#include "iwl-dev.h"
/* 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)
-
-/* For faster active scanning, scan will move to the next channel if fewer than
- * PLCP_QUIET_THRESH packets are heard on this channel within
- * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
- * time if it's a quiet channel (nothing responded to our probe, and there's
- * 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_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 passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
* Must be set longer than active dwell time.
-static int iwl_is_empty_essid(const char *essid, int essid_len)
-{
- /* Single white space is for Linksys APs */
- if (essid_len == 1 && essid[0] == ' ')
- return 1;
-
- /* Otherwise, if the entire essid is 0, we assume it is hidden */
- while (essid_len) {
- essid_len--;
- if (essid[essid_len] != '\0')
- return 0;
- }
-
- return 1;
-}
-
-
-
-const char *iwl_escape_essid(const char *essid, u8 essid_len)
-{
- static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
- const char *s = essid;
- char *d = escaped;
-
- if (iwl_is_empty_essid(essid, essid_len)) {
- memcpy(escaped, "<hidden>", sizeof("<hidden>"));
- return escaped;
- }
-
- essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
- while (essid_len--) {
- if (*s == '\0') {
- *d++ = '\\';
- *d++ = '0';
- s++;
- } else
- *d++ = *s++;
- }
- *d = '\0';
- return escaped;
-}
-EXPORT_SYMBOL(iwl_escape_essid);
-
/**
* iwl_scan_cancel - Cancel any currently executing HW scan
*
}
if (test_bit(STATUS_SCANNING, &priv->status)) {
- if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
- IWL_DEBUG_SCAN("Queuing scan abort.\n");
- set_bit(STATUS_SCAN_ABORTING, &priv->status);
+ if (!test_and_set_bit(STATUS_SCAN_ABORTING, &priv->status)) {
+ IWL_DEBUG_SCAN(priv, "Queuing scan abort.\n");
queue_work(priv->workqueue, &priv->abort_scan);
} else
- IWL_DEBUG_SCAN("Scan abort already in progress.\n");
+ IWL_DEBUG_SCAN(priv, "Scan abort already in progress.\n");
return test_bit(STATUS_SCANNING, &priv->status);
}
static int iwl_send_scan_abort(struct iwl_priv *priv)
{
int ret = 0;
- struct iwl_rx_packet *res;
+ struct iwl_rx_packet *pkt;
struct iwl_host_cmd cmd = {
.id = REPLY_SCAN_ABORT_CMD,
- .meta.flags = CMD_WANT_SKB,
+ .flags = CMD_WANT_SKB,
};
/* If there isn't a scan actively going on in the hardware
return ret;
}
- res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
- if (res->u.status != CAN_ABORT_STATUS) {
+ pkt = (struct iwl_rx_packet *)cmd.reply_page;
+ if (pkt->u.status != CAN_ABORT_STATUS) {
/* The scan abort will return 1 for success or
* 2 for "failure". A failure condition can be
* due to simply not being in an active scan which
* can occur if we send the scan abort before we
* the microcode has notified us that a scan is
* completed. */
- IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
+ IWL_DEBUG_INFO(priv, "SCAN_ABORT returned %d.\n", pkt->u.status);
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
clear_bit(STATUS_SCAN_HW, &priv->status);
}
- dev_kfree_skb_any(cmd.meta.u.skb);
+ iwl_free_pages(priv, cmd.reply_page);
return ret;
}
-
/* Service response to REPLY_SCAN_CMD (0x80) */
static void iwl_rx_reply_scan(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_rx_packet *pkt = rxb_addr(rxb);
struct iwl_scanreq_notification *notif =
(struct iwl_scanreq_notification *)pkt->u.raw;
- IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
+ IWL_DEBUG_RX(priv, "Scan request status = 0x%x\n", notif->status);
#endif
}
static void iwl_rx_scan_start_notif(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
- struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
struct iwl_scanstart_notification *notif =
(struct iwl_scanstart_notification *)pkt->u.raw;
priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
- IWL_DEBUG_SCAN("Scan start: "
+ IWL_DEBUG_SCAN(priv, "Scan start: "
"%d [802.11%s] "
"(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) */
struct iwl_rx_mem_buffer *rxb)
{
#ifdef CONFIG_IWLWIFI_DEBUG
- struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
struct iwl_scanresults_notification *notif =
(struct iwl_scanresults_notification *)pkt->u.raw;
- IWL_DEBUG_SCAN("Scan ch.res: "
+ IWL_DEBUG_SCAN(priv, "Scan ch.res: "
"%d [802.11%s] "
"(TSF: 0x%08X:%08X) - %d "
- "elapsed=%lu usec (%dms since last)\n",
+ "elapsed=%lu usec\n",
notif->channel,
notif->band ? "bg" : "a",
le32_to_cpu(notif->tsf_high),
le32_to_cpu(notif->tsf_low),
le32_to_cpu(notif->statistics[0]),
- le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
- jiffies_to_msecs(elapsed_jiffies
- (priv->last_scan_jiffies, jiffies)));
+ le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf);
#endif
-
- priv->last_scan_jiffies = jiffies;
- priv->next_scan_jiffies = 0;
}
/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
static void iwl_rx_scan_complete_notif(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
- struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
+#ifdef CONFIG_IWLWIFI_DEBUG
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
- IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
+ IWL_DEBUG_SCAN(priv, "Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
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);
- /* The scan completion notification came in, so kill that timer... */
- cancel_delayed_work(&priv->scan_check);
-
- IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
- (priv->scan_bands == 2) ? "2.4" : "5.2",
+ IWL_DEBUG_INFO(priv, "Scan on %sGHz took %dms\n",
+ (priv->scan_band == 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--;
+ (priv->scan_start, jiffies)));
- /* If a request to abort was given, or the scan did not succeed
+ /*
+ * If a request to abort was given, or the scan did not succeed
* then we reset the scan state machine and terminate,
- * re-queuing another scan if one has been requested */
- if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
- IWL_DEBUG_INFO("Aborted scan completed.\n");
- clear_bit(STATUS_SCAN_ABORTING, &priv->status);
- } else {
- /* If there are more bands on this scan pass reschedule */
- if (priv->scan_bands > 0)
- goto reschedule;
- }
+ * re-queuing another scan if one has been requested
+ */
+ if (test_and_clear_bit(STATUS_SCAN_ABORTING, &priv->status))
+ IWL_DEBUG_INFO(priv, "Aborted scan completed.\n");
- priv->last_scan_jiffies = jiffies;
- priv->next_scan_jiffies = 0;
- IWL_DEBUG_INFO("Setting scan to off\n");
+ IWL_DEBUG_INFO(priv, "Setting scan to off\n");
clear_bit(STATUS_SCANNING, &priv->status);
- IWL_DEBUG_INFO("Scan took %dms\n",
- jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
-
queue_work(priv->workqueue, &priv->scan_completed);
-
- return;
-
-reschedule:
- priv->scan_pass_start = jiffies;
- queue_work(priv->workqueue, &priv->request_scan);
}
void iwl_setup_rx_scan_handlers(struct iwl_priv *priv)
}
EXPORT_SYMBOL(iwl_setup_rx_scan_handlers);
-static inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv,
- enum ieee80211_band band)
+inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv,
+ 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);
}
+EXPORT_SYMBOL(iwl_get_active_dwell_time);
-static u16 iwl_get_passive_dwell_time(struct iwl_priv *priv,
- enum ieee80211_band band)
+u16 iwl_get_passive_dwell_time(struct iwl_priv *priv,
+ enum ieee80211_band band,
+ struct ieee80211_vif *vif)
{
- 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;
/* If we're associated, we clamp the maximum passive
* dwell time to be 98% of the beacon interval (minus
* 2 * channel tune time) */
- passive = priv->beacon_int;
+ passive = vif ? vif->bss_conf.beacon_int : 0;
if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
passive = IWL_PASSIVE_DWELL_BASE;
passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
}
- if (passive <= active)
- passive = active + 1;
-
return passive;
}
+EXPORT_SYMBOL(iwl_get_passive_dwell_time);
-static int iwl_get_channels_for_scan(struct iwl_priv *priv,
- enum ieee80211_band band,
- u8 is_active, u8 direct_mask,
- struct iwl_scan_channel *scan_ch)
+void iwl_init_scan_params(struct iwl_priv *priv)
{
- const struct ieee80211_channel *channels = NULL;
- const struct ieee80211_supported_band *sband;
- const struct iwl_channel_info *ch_info;
- u16 passive_dwell = 0;
- u16 active_dwell = 0;
- int added, i;
-
- sband = iwl_get_hw_mode(priv, band);
- if (!sband)
- return 0;
+ 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] = ant_idx;
+ if (!priv->scan_tx_ant[IEEE80211_BAND_2GHZ])
+ priv->scan_tx_ant[IEEE80211_BAND_2GHZ] = ant_idx;
+}
+EXPORT_SYMBOL(iwl_init_scan_params);
- channels = sband->channels;
-
- active_dwell = iwl_get_active_dwell_time(priv, band);
- passive_dwell = iwl_get_passive_dwell_time(priv, band);
-
- for (i = 0, added = 0; i < sband->n_channels; i++) {
- if (channels[i].flags & IEEE80211_CHAN_DISABLED)
- continue;
-
- scan_ch->channel =
- ieee80211_frequency_to_channel(channels[i].center_freq);
-
- ch_info = iwl_get_channel_info(priv, band,
- scan_ch->channel);
- if (!is_channel_valid(ch_info)) {
- IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
- scan_ch->channel);
- continue;
- }
-
- if (!is_active || is_channel_passive(ch_info) ||
- (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
- scan_ch->type = 0; /* passive */
- else
- scan_ch->type = 1; /* active */
-
- if (scan_ch->type & 1)
- scan_ch->type |= (direct_mask << 1);
-
- 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->tpc.dsp_atten = 110;
- /* scan_pwr_info->tpc.dsp_atten; */
-
- /*scan_pwr_info->tpc.tx_gain; */
- if (band == IEEE80211_BAND_5GHZ)
- scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
- else {
- scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
- /* NOTE: if we were doing 6Mb OFDM for scans we'd use
- * power level:
- * scan_ch->tpc.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) ?
- active_dwell : passive_dwell);
-
- scan_ch++;
- added++;
- }
+static int iwl_scan_initiate(struct iwl_priv *priv, struct ieee80211_vif *vif)
+{
+ WARN_ON(!mutex_is_locked(&priv->mutex));
+
+ IWL_DEBUG_INFO(priv, "Starting scan...\n");
+ set_bit(STATUS_SCANNING, &priv->status);
+ priv->is_internal_short_scan = false;
+ priv->scan_start = jiffies;
+
+ if (WARN_ON(!priv->cfg->ops->utils->request_scan))
+ return -EOPNOTSUPP;
+
+ priv->cfg->ops->utils->request_scan(priv, vif);
- IWL_DEBUG_SCAN("total channels to scan %d \n", added);
- return added;
+ return 0;
}
-int iwl_scan_initiate(struct iwl_priv *priv)
+int iwl_mac_hw_scan(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct cfg80211_scan_request *req)
{
- if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
- IWL_ERROR("APs don't scan.\n");
- return 0;
+ struct iwl_priv *priv = hw->priv;
+ int ret;
+
+ IWL_DEBUG_MAC80211(priv, "enter\n");
+
+ if (req->n_channels == 0)
+ return -EINVAL;
+
+ mutex_lock(&priv->mutex);
+
+ if (!iwl_is_ready_rf(priv)) {
+ ret = -EIO;
+ IWL_DEBUG_MAC80211(priv, "leave - not ready or exit pending\n");
+ goto out_unlock;
}
+ if (test_bit(STATUS_SCANNING, &priv->status)) {
+ IWL_DEBUG_SCAN(priv, "Scan already in progress.\n");
+ ret = -EAGAIN;
+ goto out_unlock;
+ }
+
+ if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
+ IWL_DEBUG_SCAN(priv, "Scan request while abort pending\n");
+ ret = -EAGAIN;
+ goto out_unlock;
+ }
+
+ /* mac80211 will only ask for one band at a time */
+ priv->scan_band = req->channels[0]->band;
+ priv->scan_request = req;
+
+ ret = iwl_scan_initiate(priv, vif);
+
+ IWL_DEBUG_MAC80211(priv, "leave\n");
+
+out_unlock:
+ mutex_unlock(&priv->mutex);
+
+ return ret;
+}
+EXPORT_SYMBOL(iwl_mac_hw_scan);
+
+/*
+ * internal short scan, this function should only been called while associated.
+ * It will reset and tune the radio to prevent possible RF related problem
+ */
+void iwl_internal_short_hw_scan(struct iwl_priv *priv)
+{
+ queue_work(priv->workqueue, &priv->start_internal_scan);
+}
+
+void iwl_bg_start_internal_scan(struct work_struct *work)
+{
+ struct iwl_priv *priv =
+ container_of(work, struct iwl_priv, start_internal_scan);
+
+ mutex_lock(&priv->mutex);
+
if (!iwl_is_ready_rf(priv)) {
- IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
- return -EIO;
+ IWL_DEBUG_SCAN(priv, "not ready or exit pending\n");
+ goto unlock;
}
if (test_bit(STATUS_SCANNING, &priv->status)) {
- IWL_DEBUG_SCAN("Scan already in progress.\n");
- return -EAGAIN;
+ IWL_DEBUG_SCAN(priv, "Scan already in progress.\n");
+ goto unlock;
}
if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
- IWL_DEBUG_SCAN("Scan request while abort pending. "
- "Queuing.\n");
- return -EAGAIN;
+ IWL_DEBUG_SCAN(priv, "Scan request while abort pending\n");
+ goto unlock;
}
- IWL_DEBUG_INFO("Starting scan...\n");
- priv->scan_bands = 2;
+ priv->scan_band = priv->band;
+
+ IWL_DEBUG_SCAN(priv, "Start internal short scan...\n");
set_bit(STATUS_SCANNING, &priv->status);
- priv->scan_start = jiffies;
- priv->scan_pass_start = priv->scan_start;
+ priv->is_internal_short_scan = true;
- queue_work(priv->workqueue, &priv->request_scan);
+ if (WARN_ON(!priv->cfg->ops->utils->request_scan))
+ goto unlock;
- return 0;
+ priv->cfg->ops->utils->request_scan(priv, NULL);
+ unlock:
+ mutex_unlock(&priv->mutex);
}
-EXPORT_SYMBOL(iwl_scan_initiate);
+EXPORT_SYMBOL(iwl_bg_start_internal_scan);
-#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
-
-static void iwl_bg_scan_check(struct work_struct *data)
+void iwl_bg_scan_check(struct work_struct *data)
{
struct iwl_priv *priv =
container_of(data, struct iwl_priv, scan_check.work);
mutex_lock(&priv->mutex);
if (test_bit(STATUS_SCANNING, &priv->status) ||
test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
- IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
+ IWL_DEBUG_SCAN(priv, "Scan completion watchdog resetting "
"adapter (%dms)\n",
jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
}
mutex_unlock(&priv->mutex);
}
-/**
- * iwl_supported_rate_to_ie - fill in the supported rate in IE field
- *
- * return : set the bit for each supported rate insert in ie
- */
-static u16 iwl_supported_rate_to_ie(u8 *ie, u16 supported_rate,
- u16 basic_rate, int *left)
-{
- u16 ret_rates = 0, bit;
- int i;
- u8 *cnt = ie;
- u8 *rates = ie + 1;
-
- for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
- if (bit & supported_rate) {
- ret_rates |= bit;
- rates[*cnt] = iwl_rates[i].ieee |
- ((bit & basic_rate) ? 0x80 : 0x00);
- (*cnt)++;
- (*left)--;
- if ((*left <= 0) ||
- (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
- break;
- }
- }
-
- return ret_rates;
-}
-
-
-static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
- u8 *pos, int *left)
-{
- struct ieee80211_ht_cap *ht_cap;
-
- if (!sband || !sband->ht_info.ht_supported)
- return;
-
- if (*left < sizeof(struct ieee80211_ht_cap))
- return;
-
- *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->ampdu_params_info =
- (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
- ((sband->ht_info.ampdu_density << 2) &
- IEEE80211_HT_CAP_AMPDU_DENSITY);
- *left -= sizeof(struct ieee80211_ht_cap);
-}
+EXPORT_SYMBOL(iwl_bg_scan_check);
/**
* iwl_fill_probe_req - fill in all required fields and IE for probe request
*/
-static u16 iwl_fill_probe_req(struct iwl_priv *priv,
- enum ieee80211_band band,
- struct ieee80211_mgmt *frame,
- int left, int is_direct)
+
+u16 iwl_fill_probe_req(struct iwl_priv *priv, struct ieee80211_mgmt *frame,
+ const u8 *ies, int ie_len, int left)
{
int len = 0;
u8 *pos = NULL;
- u16 active_rates, ret_rates, cck_rates, active_rate_basic;
- const struct ieee80211_supported_band *sband =
- iwl_get_hw_mode(priv, band);
/* Make sure there is enough space for the probe request,
* two mandatory IEs and the data */
left -= 24;
if (left < 0)
return 0;
- len += 24;
frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
frame->seq_ctrl = 0;
- /* fill in our indirect SSID IE */
+ len += 24;
+
/* ...next IE... */
+ pos = &frame->u.probe_req.variable[0];
+ /* fill in our indirect SSID IE */
left -= 2;
if (left < 0)
return 0;
- len += 2;
- pos = &(frame->u.probe_req.variable[0]);
*pos++ = WLAN_EID_SSID;
*pos++ = 0;
- /* fill in our direct SSID IE... */
- if (is_direct) {
- /* ...next IE... */
- left -= 2 + priv->essid_len;
- if (left < 0)
- return 0;
- /* ... fill it in... */
- *pos++ = WLAN_EID_SSID;
- *pos++ = priv->essid_len;
- memcpy(pos, priv->essid, priv->essid_len);
- pos += priv->essid_len;
- len += 2 + priv->essid_len;
- }
-
- /* fill in supported rate */
- /* ...next IE... */
- left -= 2;
- if (left < 0)
- return 0;
-
- /* ... fill it in... */
- *pos++ = WLAN_EID_SUPP_RATES;
- *pos = 0;
-
- /* exclude 60M rate */
- active_rates = priv->rates_mask;
- active_rates &= ~IWL_RATE_60M_MASK;
-
- active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
-
- cck_rates = IWL_CCK_RATES_MASK & active_rates;
- ret_rates = iwl_supported_rate_to_ie(pos, cck_rates,
- active_rate_basic, &left);
- active_rates &= ~ret_rates;
-
- ret_rates = iwl_supported_rate_to_ie(pos, active_rates,
- active_rate_basic, &left);
- active_rates &= ~ret_rates;
-
- len += 2 + *pos;
- pos += (*pos) + 1;
- if (active_rates == 0)
- goto fill_end;
-
- /* fill in supported extended rate */
- /* ...next IE... */
- left -= 2;
- if (left < 0)
- return 0;
- /* ... fill it in... */
- *pos++ = WLAN_EID_EXT_SUPP_RATES;
- *pos = 0;
- iwl_supported_rate_to_ie(pos, active_rates,
- active_rate_basic, &left);
- if (*pos > 0)
- len += 2 + *pos;
-
- fill_end:
- /* fill in HT IE */
- left -= 2;
- if (left < 0)
- return 0;
+ len += 2;
- *pos++ = WLAN_EID_HT_CAPABILITY;
- *pos = 0;
+ if (WARN_ON(left < ie_len))
+ return len;
- iwl_ht_cap_to_ie(sband, pos, &left);
+ if (ies && ie_len) {
+ memcpy(pos, ies, ie_len);
+ len += ie_len;
+ }
- if (*pos > 0)
- len += 2 + *pos;
return (u16)len;
}
+EXPORT_SYMBOL(iwl_fill_probe_req);
-static void iwl_bg_request_scan(struct work_struct *data)
+void iwl_bg_abort_scan(struct work_struct *work)
{
- struct iwl_priv *priv =
- container_of(data, struct iwl_priv, request_scan);
- struct iwl_host_cmd cmd = {
- .id = REPLY_SCAN_CMD,
- .len = sizeof(struct iwl_scan_cmd),
- .meta.flags = CMD_SIZE_HUGE,
- };
- struct iwl_scan_cmd *scan;
- struct ieee80211_conf *conf = NULL;
- u16 cmd_len;
- enum ieee80211_band band;
- u8 direct_mask;
- int ret = 0;
+ struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
- conf = ieee80211_get_hw_conf(priv->hw);
+ if (!test_bit(STATUS_READY, &priv->status) ||
+ !test_bit(STATUS_GEO_CONFIGURED, &priv->status))
+ return;
mutex_lock(&priv->mutex);
- if (!iwl_is_ready(priv)) {
- IWL_WARNING("request scan called when driver not ready.\n");
- goto done;
- }
-
- /* Make sure the scan wasn't cancelled before this queued work
- * was given the chance to run... */
- if (!test_bit(STATUS_SCANNING, &priv->status))
- goto done;
-
- /* This should never be called or scheduled if there is currently
- * a scan active in the hardware. */
- if (test_bit(STATUS_SCAN_HW, &priv->status)) {
- IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
- "Ignoring second request.\n");
- ret = -EIO;
- goto done;
- }
-
- if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
- IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
- goto done;
- }
-
- if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
- IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
- goto done;
- }
-
- if (iwl_is_rfkill(priv)) {
- IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
- goto done;
- }
-
- if (!test_bit(STATUS_READY, &priv->status)) {
- IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
- goto done;
- }
+ set_bit(STATUS_SCAN_ABORTING, &priv->status);
+ iwl_send_scan_abort(priv);
- if (!priv->scan_bands) {
- IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
- goto done;
- }
+ mutex_unlock(&priv->mutex);
+}
+EXPORT_SYMBOL(iwl_bg_abort_scan);
- if (!priv->scan) {
- priv->scan = kmalloc(sizeof(struct iwl_scan_cmd) +
- IWL_MAX_SCAN_SIZE, GFP_KERNEL);
- if (!priv->scan) {
- ret = -ENOMEM;
- goto done;
- }
- }
- scan = priv->scan;
- memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE);
+void iwl_bg_scan_completed(struct work_struct *work)
+{
+ struct iwl_priv *priv =
+ container_of(work, struct iwl_priv, scan_completed);
- scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
- scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
+ IWL_DEBUG_SCAN(priv, "SCAN complete scan\n");
- if (iwl_is_associated(priv)) {
- u16 interval = 0;
- u32 extra;
- u32 suspend_time = 100;
- u32 scan_suspend_time = 100;
- unsigned long flags;
-
- IWL_DEBUG_INFO("Scanning while associated...\n");
-
- spin_lock_irqsave(&priv->lock, flags);
- interval = priv->beacon_int;
- spin_unlock_irqrestore(&priv->lock, flags);
-
- scan->suspend_time = 0;
- scan->max_out_time = cpu_to_le32(200 * 1024);
- if (!interval)
- interval = suspend_time;
-
- extra = (suspend_time / interval) << 22;
- scan_suspend_time = (extra |
- ((suspend_time % interval) * 1024));
- scan->suspend_time = cpu_to_le32(scan_suspend_time);
- IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
- scan_suspend_time, interval);
- }
-
- /* We should add the ability for user to lock to PASSIVE ONLY */
- if (priv->one_direct_scan) {
- IWL_DEBUG_SCAN
- ("Kicking off one direct scan for '%s'\n",
- iwl_escape_essid(priv->direct_ssid,
- priv->direct_ssid_len));
- scan->direct_scan[0].id = WLAN_EID_SSID;
- 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;
- } else if (!iwl_is_associated(priv) && priv->essid_len) {
- IWL_DEBUG_SCAN
- ("Kicking off one direct scan for '%s' when 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;
- } else {
- IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
- direct_mask = 0;
- }
+ cancel_delayed_work(&priv->scan_check);
- scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
- scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
- scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
-
-
- switch (priv->scan_bands) {
- case 2:
- scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
- scan->tx_cmd.rate_n_flags =
- iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
- RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
-
- scan->good_CRC_th = 0;
- band = IEEE80211_BAND_2GHZ;
- break;
-
- case 1:
- scan->tx_cmd.rate_n_flags =
- iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
- RATE_MCS_ANT_B_MSK);
- scan->good_CRC_th = IWL_GOOD_CRC_TH;
- band = IEEE80211_BAND_5GHZ;
- break;
-
- default:
- IWL_WARNING("Invalid scan band count\n");
- goto done;
+ if (!priv->is_internal_short_scan)
+ ieee80211_scan_completed(priv->hw, false);
+ else {
+ priv->is_internal_short_scan = false;
+ IWL_DEBUG_SCAN(priv, "internal short scan completed\n");
}
- /* We don't build a direct scan probe request; the uCode will do
- * that based on the direct_mask added to each channel entry */
- cmd_len = iwl_fill_probe_req(priv, band,
- (struct ieee80211_mgmt *)scan->data,
- IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
-
- scan->tx_cmd.len = cpu_to_le16(cmd_len);
- /* select Rx chains */
-
- /* Force use of chains B and C (0x6) for scan Rx.
- * Avoid A (0x1) because of its off-channel reception on A-band.
- * MIMO is not used here, but value is required to make uCode happy. */
- scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
- cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
- (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
- (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
-
- if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
- scan->filter_flags = RXON_FILTER_PROMISC_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->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
- RXON_FILTER_BCON_AWARE_MSK);
- cmd.len += le16_to_cpu(scan->tx_cmd.len) +
- scan->channel_count * sizeof(struct iwl_scan_channel);
- cmd.data = scan;
- scan->len = cpu_to_le16(cmd.len);
-
- set_bit(STATUS_SCAN_HW, &priv->status);
- ret = iwl_send_cmd_sync(priv, &cmd);
- if (ret)
- goto done;
-
- queue_delayed_work(priv->workqueue, &priv->scan_check,
- IWL_SCAN_CHECK_WATCHDOG);
-
- mutex_unlock(&priv->mutex);
- return;
-
- done:
- /* inform mac80211 scan aborted */
- queue_work(priv->workqueue, &priv->scan_completed);
- mutex_unlock(&priv->mutex);
-}
-
-static void iwl_bg_abort_scan(struct work_struct *work)
-{
- struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
-
- if (!iwl_is_ready(priv))
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
return;
+ /* Since setting the TXPOWER may have been deferred while
+ * performing the scan, fire one off */
mutex_lock(&priv->mutex);
-
- set_bit(STATUS_SCAN_ABORTING, &priv->status);
- iwl_send_scan_abort(priv);
-
+ iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
mutex_unlock(&priv->mutex);
}
+EXPORT_SYMBOL(iwl_bg_scan_completed);
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->request_scan, iwl_bg_request_scan);
+ INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
+ INIT_WORK(&priv->start_internal_scan, iwl_bg_start_internal_scan);
INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
}
EXPORT_SYMBOL(iwl_setup_scan_deferred_work);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff