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path: root/drivers/net/wireless/iwlwifi/iwl-scan.c
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Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-scan.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-scan.c251
1 files changed, 132 insertions, 119 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-scan.c b/drivers/net/wireless/iwlwifi/iwl-scan.c
index a6454726737e..902efe4bc898 100644
--- a/drivers/net/wireless/iwlwifi/iwl-scan.c
+++ b/drivers/net/wireless/iwlwifi/iwl-scan.c
@@ -2,7 +2,7 @@
*
* GPL LICENSE SUMMARY
*
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * Copyright(c) 2008 - 2012 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
@@ -57,39 +57,39 @@
static int iwl_send_scan_abort(struct iwl_priv *priv)
{
int ret;
- struct iwl_rx_packet *pkt;
struct iwl_host_cmd cmd = {
.id = REPLY_SCAN_ABORT_CMD,
.flags = CMD_SYNC | CMD_WANT_SKB,
};
+ __le32 *status;
/* Exit instantly with error when device is not ready
* to receive scan abort command or it does not perform
* hardware scan currently */
- if (!test_bit(STATUS_READY, &priv->shrd->status) ||
- !test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) ||
- !test_bit(STATUS_SCAN_HW, &priv->shrd->status) ||
- test_bit(STATUS_FW_ERROR, &priv->shrd->status) ||
- test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
+ if (!test_bit(STATUS_READY, &priv->status) ||
+ !test_bit(STATUS_GEO_CONFIGURED, &priv->status) ||
+ !test_bit(STATUS_SCAN_HW, &priv->status) ||
+ test_bit(STATUS_FW_ERROR, &priv->shrd->status))
return -EIO;
- ret = iwl_trans_send_cmd(trans(priv), &cmd);
+ ret = iwl_dvm_send_cmd(priv, &cmd);
if (ret)
return ret;
- pkt = (struct iwl_rx_packet *)cmd.reply_page;
- if (pkt->u.status != CAN_ABORT_STATUS) {
+ status = (void *)cmd.resp_pkt->data;
+ if (*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_SCAN(priv, "SCAN_ABORT ret %d.\n", pkt->u.status);
+ IWL_DEBUG_SCAN(priv, "SCAN_ABORT ret %d.\n",
+ le32_to_cpu(*status));
ret = -EIO;
}
- iwl_free_pages(priv->shrd, cmd.reply_page);
+ iwl_free_resp(&cmd);
return ret;
}
@@ -116,20 +116,20 @@ static void iwl_process_scan_complete(struct iwl_priv *priv)
{
bool aborted;
- lockdep_assert_held(&priv->shrd->mutex);
+ lockdep_assert_held(&priv->mutex);
- if (!test_and_clear_bit(STATUS_SCAN_COMPLETE, &priv->shrd->status))
+ if (!test_and_clear_bit(STATUS_SCAN_COMPLETE, &priv->status))
return;
IWL_DEBUG_SCAN(priv, "Completed scan.\n");
cancel_delayed_work(&priv->scan_check);
- aborted = test_and_clear_bit(STATUS_SCAN_ABORTING, &priv->shrd->status);
+ aborted = test_and_clear_bit(STATUS_SCAN_ABORTING, &priv->status);
if (aborted)
IWL_DEBUG_SCAN(priv, "Aborted scan completed.\n");
- if (!test_and_clear_bit(STATUS_SCANNING, &priv->shrd->status)) {
+ if (!test_and_clear_bit(STATUS_SCANNING, &priv->status)) {
IWL_DEBUG_SCAN(priv, "Scan already completed.\n");
goto out_settings;
}
@@ -165,7 +165,7 @@ out_complete:
out_settings:
/* Can we still talk to firmware ? */
- if (!iwl_is_ready_rf(priv->shrd))
+ if (!iwl_is_ready_rf(priv))
return;
iwlagn_post_scan(priv);
@@ -173,18 +173,18 @@ out_settings:
void iwl_force_scan_end(struct iwl_priv *priv)
{
- lockdep_assert_held(&priv->shrd->mutex);
+ lockdep_assert_held(&priv->mutex);
- if (!test_bit(STATUS_SCANNING, &priv->shrd->status)) {
+ if (!test_bit(STATUS_SCANNING, &priv->status)) {
IWL_DEBUG_SCAN(priv, "Forcing scan end while not scanning\n");
return;
}
IWL_DEBUG_SCAN(priv, "Forcing scan end\n");
- clear_bit(STATUS_SCANNING, &priv->shrd->status);
- clear_bit(STATUS_SCAN_HW, &priv->shrd->status);
- clear_bit(STATUS_SCAN_ABORTING, &priv->shrd->status);
- clear_bit(STATUS_SCAN_COMPLETE, &priv->shrd->status);
+ clear_bit(STATUS_SCANNING, &priv->status);
+ clear_bit(STATUS_SCAN_HW, &priv->status);
+ clear_bit(STATUS_SCAN_ABORTING, &priv->status);
+ clear_bit(STATUS_SCAN_COMPLETE, &priv->status);
iwl_complete_scan(priv, true);
}
@@ -192,14 +192,14 @@ static void iwl_do_scan_abort(struct iwl_priv *priv)
{
int ret;
- lockdep_assert_held(&priv->shrd->mutex);
+ lockdep_assert_held(&priv->mutex);
- if (!test_bit(STATUS_SCANNING, &priv->shrd->status)) {
+ if (!test_bit(STATUS_SCANNING, &priv->status)) {
IWL_DEBUG_SCAN(priv, "Not performing scan to abort\n");
return;
}
- if (test_and_set_bit(STATUS_SCAN_ABORTING, &priv->shrd->status)) {
+ if (test_and_set_bit(STATUS_SCAN_ABORTING, &priv->status)) {
IWL_DEBUG_SCAN(priv, "Scan abort in progress\n");
return;
}
@@ -218,7 +218,7 @@ static void iwl_do_scan_abort(struct iwl_priv *priv)
int iwl_scan_cancel(struct iwl_priv *priv)
{
IWL_DEBUG_SCAN(priv, "Queuing abort scan\n");
- queue_work(priv->shrd->workqueue, &priv->abort_scan);
+ queue_work(priv->workqueue, &priv->abort_scan);
return 0;
}
@@ -231,14 +231,14 @@ void iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
{
unsigned long timeout = jiffies + msecs_to_jiffies(ms);
- lockdep_assert_held(&priv->shrd->mutex);
+ lockdep_assert_held(&priv->mutex);
IWL_DEBUG_SCAN(priv, "Scan cancel timeout\n");
iwl_do_scan_abort(priv);
while (time_before_eq(jiffies, timeout)) {
- if (!test_bit(STATUS_SCAN_HW, &priv->shrd->status))
+ if (!test_bit(STATUS_SCAN_HW, &priv->status))
goto finished;
msleep(20);
}
@@ -261,13 +261,12 @@ void iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
/* Service response to REPLY_SCAN_CMD (0x80) */
static int iwl_rx_reply_scan(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb,
+ struct iwl_rx_cmd_buffer *rxb,
struct iwl_device_cmd *cmd)
{
#ifdef CONFIG_IWLWIFI_DEBUG
struct iwl_rx_packet *pkt = rxb_addr(rxb);
- struct iwl_scanreq_notification *notif =
- (struct iwl_scanreq_notification *)pkt->u.raw;
+ struct iwl_scanreq_notification *notif = (void *)pkt->data;
IWL_DEBUG_SCAN(priv, "Scan request status = 0x%x\n", notif->status);
#endif
@@ -276,12 +275,12 @@ static int iwl_rx_reply_scan(struct iwl_priv *priv,
/* Service SCAN_START_NOTIFICATION (0x82) */
static int iwl_rx_scan_start_notif(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb,
+ struct iwl_rx_cmd_buffer *rxb,
struct iwl_device_cmd *cmd)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
- struct iwl_scanstart_notification *notif =
- (struct iwl_scanstart_notification *)pkt->u.raw;
+ struct iwl_scanstart_notification *notif = (void *)pkt->data;
+
priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
IWL_DEBUG_SCAN(priv, "Scan start: "
"%d [802.11%s] "
@@ -303,13 +302,12 @@ static int iwl_rx_scan_start_notif(struct iwl_priv *priv,
/* Service SCAN_RESULTS_NOTIFICATION (0x83) */
static int iwl_rx_scan_results_notif(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb,
+ struct iwl_rx_cmd_buffer *rxb,
struct iwl_device_cmd *cmd)
{
#ifdef CONFIG_IWLWIFI_DEBUG
struct iwl_rx_packet *pkt = rxb_addr(rxb);
- struct iwl_scanresults_notification *notif =
- (struct iwl_scanresults_notification *)pkt->u.raw;
+ struct iwl_scanresults_notification *notif = (void *)pkt->data;
IWL_DEBUG_SCAN(priv, "Scan ch.res: "
"%d [802.11%s] "
@@ -329,11 +327,11 @@ static int iwl_rx_scan_results_notif(struct iwl_priv *priv,
/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
static int iwl_rx_scan_complete_notif(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb,
+ struct iwl_rx_cmd_buffer *rxb,
struct iwl_device_cmd *cmd)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
- struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
+ struct iwl_scancomplete_notification *scan_notif = (void *)pkt->data;
IWL_DEBUG_SCAN(priv, "Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
scan_notif->scanned_channels,
@@ -352,9 +350,9 @@ static int iwl_rx_scan_complete_notif(struct iwl_priv *priv,
* to clear, we need to set SCAN_COMPLETE before clearing SCAN_HW
* to avoid a race there.
*/
- set_bit(STATUS_SCAN_COMPLETE, &priv->shrd->status);
- clear_bit(STATUS_SCAN_HW, &priv->shrd->status);
- queue_work(priv->shrd->workqueue, &priv->scan_completed);
+ set_bit(STATUS_SCAN_COMPLETE, &priv->status);
+ clear_bit(STATUS_SCAN_HW, &priv->status);
+ queue_work(priv->workqueue, &priv->scan_completed);
if (priv->iw_mode != NL80211_IFTYPE_ADHOC &&
iwl_advanced_bt_coexist(priv) &&
@@ -374,7 +372,7 @@ static int iwl_rx_scan_complete_notif(struct iwl_priv *priv,
IWL_BT_COEX_TRAFFIC_LOAD_NONE;
}
priv->bt_status = scan_notif->bt_status;
- queue_work(priv->shrd->workqueue,
+ queue_work(priv->workqueue,
&priv->bt_traffic_change_work);
}
return 0;
@@ -414,10 +412,25 @@ static u16 iwl_limit_dwell(struct iwl_priv *priv, u16 dwell_time)
for_each_context(priv, ctx) {
u16 value;
- if (!iwl_is_associated_ctx(ctx))
- continue;
- if (ctx->staging.dev_type == RXON_DEV_TYPE_P2P)
+ switch (ctx->staging.dev_type) {
+ case RXON_DEV_TYPE_P2P:
+ /* no timing constraints */
continue;
+ case RXON_DEV_TYPE_ESS:
+ default:
+ /* timing constraints if associated */
+ if (!iwl_is_associated_ctx(ctx))
+ continue;
+ break;
+ case RXON_DEV_TYPE_CP:
+ case RXON_DEV_TYPE_2STA:
+ /*
+ * These seem to always have timers for TBTT
+ * active in uCode even when not associated yet.
+ */
+ break;
+ }
+
value = ctx->beacon_int;
if (!value)
value = IWL_PASSIVE_DWELL_BASE;
@@ -559,6 +572,53 @@ static int iwl_get_channels_for_scan(struct iwl_priv *priv,
return added;
}
+/**
+ * iwl_fill_probe_req - fill in all required fields and IE for probe request
+ */
+
+static u16 iwl_fill_probe_req(struct ieee80211_mgmt *frame, const u8 *ta,
+ const u8 *ies, int ie_len, int left)
+{
+ int len = 0;
+ u8 *pos = NULL;
+
+ /* Make sure there is enough space for the probe request,
+ * two mandatory IEs and the data */
+ left -= 24;
+ if (left < 0)
+ return 0;
+
+ frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
+ memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
+ memcpy(frame->sa, ta, ETH_ALEN);
+ memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
+ frame->seq_ctrl = 0;
+
+ len += 24;
+
+ /* ...next IE... */
+ pos = &frame->u.probe_req.variable[0];
+
+ /* fill in our indirect SSID IE */
+ left -= 2;
+ if (left < 0)
+ return 0;
+ *pos++ = WLAN_EID_SSID;
+ *pos++ = 0;
+
+ len += 2;
+
+ if (WARN_ON(left < ie_len))
+ return len;
+
+ if (ies && ie_len) {
+ memcpy(pos, ies, ie_len);
+ len += ie_len;
+ }
+
+ return (u16)len;
+}
+
static int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
{
struct iwl_host_cmd cmd = {
@@ -581,7 +641,7 @@ static int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
u8 scan_tx_antennas = hw_params(priv).valid_tx_ant;
int ret;
- lockdep_assert_held(&priv->shrd->mutex);
+ lockdep_assert_held(&priv->mutex);
if (vif)
ctx = iwl_rxon_ctx_from_vif(vif);
@@ -778,7 +838,7 @@ static int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
scan->rx_chain = cpu_to_le16(rx_chain);
switch (priv->scan_type) {
case IWL_SCAN_NORMAL:
- cmd_len = iwl_fill_probe_req(priv,
+ cmd_len = iwl_fill_probe_req(
(struct ieee80211_mgmt *)scan->data,
vif->addr,
priv->scan_request->ie,
@@ -788,7 +848,7 @@ static int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
case IWL_SCAN_RADIO_RESET:
case IWL_SCAN_ROC:
/* use bcast addr, will not be transmitted but must be valid */
- cmd_len = iwl_fill_probe_req(priv,
+ cmd_len = iwl_fill_probe_req(
(struct ieee80211_mgmt *)scan->data,
iwl_bcast_addr, NULL, 0,
IWL_MAX_SCAN_SIZE - sizeof(*scan));
@@ -867,15 +927,15 @@ static int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
scan->len = cpu_to_le16(cmd.len[0]);
/* set scan bit here for PAN params */
- set_bit(STATUS_SCAN_HW, &priv->shrd->status);
+ set_bit(STATUS_SCAN_HW, &priv->status);
ret = iwlagn_set_pan_params(priv);
if (ret)
return ret;
- ret = iwl_trans_send_cmd(trans(priv), &cmd);
+ ret = iwl_dvm_send_cmd(priv, &cmd);
if (ret) {
- clear_bit(STATUS_SCAN_HW, &priv->shrd->status);
+ clear_bit(STATUS_SCAN_HW, &priv->status);
iwlagn_set_pan_params(priv);
}
@@ -898,22 +958,22 @@ int __must_check iwl_scan_initiate(struct iwl_priv *priv,
{
int ret;
- lockdep_assert_held(&priv->shrd->mutex);
+ lockdep_assert_held(&priv->mutex);
cancel_delayed_work(&priv->scan_check);
- if (!iwl_is_ready_rf(priv->shrd)) {
+ if (!iwl_is_ready_rf(priv)) {
IWL_WARN(priv, "Request scan called when driver not ready.\n");
return -EIO;
}
- if (test_bit(STATUS_SCAN_HW, &priv->shrd->status)) {
+ if (test_bit(STATUS_SCAN_HW, &priv->status)) {
IWL_DEBUG_SCAN(priv,
"Multiple concurrent scan requests in parallel.\n");
return -EBUSY;
}
- if (test_bit(STATUS_SCAN_ABORTING, &priv->shrd->status)) {
+ if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
IWL_DEBUG_SCAN(priv, "Scan request while abort pending.\n");
return -EBUSY;
}
@@ -923,19 +983,19 @@ int __must_check iwl_scan_initiate(struct iwl_priv *priv,
scan_type == IWL_SCAN_ROC ? "remain-on-channel " :
"internal short ");
- set_bit(STATUS_SCANNING, &priv->shrd->status);
+ set_bit(STATUS_SCANNING, &priv->status);
priv->scan_type = scan_type;
priv->scan_start = jiffies;
priv->scan_band = band;
ret = iwlagn_request_scan(priv, vif);
if (ret) {
- clear_bit(STATUS_SCANNING, &priv->shrd->status);
+ clear_bit(STATUS_SCANNING, &priv->status);
priv->scan_type = IWL_SCAN_NORMAL;
return ret;
}
- queue_delayed_work(priv->shrd->workqueue, &priv->scan_check,
+ queue_delayed_work(priv->workqueue, &priv->scan_check,
IWL_SCAN_CHECK_WATCHDOG);
return 0;
@@ -948,7 +1008,7 @@ int __must_check iwl_scan_initiate(struct iwl_priv *priv,
*/
void iwl_internal_short_hw_scan(struct iwl_priv *priv)
{
- queue_work(priv->shrd->workqueue, &priv->start_internal_scan);
+ queue_work(priv->workqueue, &priv->start_internal_scan);
}
static void iwl_bg_start_internal_scan(struct work_struct *work)
@@ -958,14 +1018,14 @@ static void iwl_bg_start_internal_scan(struct work_struct *work)
IWL_DEBUG_SCAN(priv, "Start internal scan\n");
- mutex_lock(&priv->shrd->mutex);
+ mutex_lock(&priv->mutex);
if (priv->scan_type == IWL_SCAN_RADIO_RESET) {
IWL_DEBUG_SCAN(priv, "Internal scan already in progress\n");
goto unlock;
}
- if (test_bit(STATUS_SCANNING, &priv->shrd->status)) {
+ if (test_bit(STATUS_SCANNING, &priv->status)) {
IWL_DEBUG_SCAN(priv, "Scan already in progress.\n");
goto unlock;
}
@@ -973,7 +1033,7 @@ static void iwl_bg_start_internal_scan(struct work_struct *work)
if (iwl_scan_initiate(priv, NULL, IWL_SCAN_RADIO_RESET, priv->band))
IWL_DEBUG_SCAN(priv, "failed to start internal short scan\n");
unlock:
- mutex_unlock(&priv->shrd->mutex);
+ mutex_unlock(&priv->mutex);
}
static void iwl_bg_scan_check(struct work_struct *data)
@@ -986,56 +1046,9 @@ static void iwl_bg_scan_check(struct work_struct *data)
/* Since we are here firmware does not finish scan and
* most likely is in bad shape, so we don't bother to
* send abort command, just force scan complete to mac80211 */
- mutex_lock(&priv->shrd->mutex);
+ mutex_lock(&priv->mutex);
iwl_force_scan_end(priv);
- mutex_unlock(&priv->shrd->mutex);
-}
-
-/**
- * iwl_fill_probe_req - fill in all required fields and IE for probe request
- */
-
-u16 iwl_fill_probe_req(struct iwl_priv *priv, struct ieee80211_mgmt *frame,
- const u8 *ta, const u8 *ies, int ie_len, int left)
-{
- int len = 0;
- u8 *pos = NULL;
-
- /* Make sure there is enough space for the probe request,
- * two mandatory IEs and the data */
- left -= 24;
- if (left < 0)
- return 0;
-
- frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
- memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
- memcpy(frame->sa, ta, ETH_ALEN);
- memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
- frame->seq_ctrl = 0;
-
- len += 24;
-
- /* ...next IE... */
- pos = &frame->u.probe_req.variable[0];
-
- /* fill in our indirect SSID IE */
- left -= 2;
- if (left < 0)
- return 0;
- *pos++ = WLAN_EID_SSID;
- *pos++ = 0;
-
- len += 2;
-
- if (WARN_ON(left < ie_len))
- return len;
-
- if (ies && ie_len) {
- memcpy(pos, ies, ie_len);
- len += ie_len;
- }
-
- return (u16)len;
+ mutex_unlock(&priv->mutex);
}
static void iwl_bg_abort_scan(struct work_struct *work)
@@ -1046,9 +1059,9 @@ static void iwl_bg_abort_scan(struct work_struct *work)
/* We keep scan_check work queued in case when firmware will not
* report back scan completed notification */
- mutex_lock(&priv->shrd->mutex);
+ mutex_lock(&priv->mutex);
iwl_scan_cancel_timeout(priv, 200);
- mutex_unlock(&priv->shrd->mutex);
+ mutex_unlock(&priv->mutex);
}
static void iwl_bg_scan_completed(struct work_struct *work)
@@ -1056,9 +1069,9 @@ static void iwl_bg_scan_completed(struct work_struct *work)
struct iwl_priv *priv =
container_of(work, struct iwl_priv, scan_completed);
- mutex_lock(&priv->shrd->mutex);
+ mutex_lock(&priv->mutex);
iwl_process_scan_complete(priv);
- mutex_unlock(&priv->shrd->mutex);
+ mutex_unlock(&priv->mutex);
}
void iwl_setup_scan_deferred_work(struct iwl_priv *priv)
@@ -1076,8 +1089,8 @@ void iwl_cancel_scan_deferred_work(struct iwl_priv *priv)
cancel_work_sync(&priv->scan_completed);
if (cancel_delayed_work_sync(&priv->scan_check)) {
- mutex_lock(&priv->shrd->mutex);
+ mutex_lock(&priv->mutex);
iwl_force_scan_end(priv);
- mutex_unlock(&priv->shrd->mutex);
+ mutex_unlock(&priv->mutex);
}
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.