diff options
author | Johannes Berg <johannes.berg@intel.com> | 2010-04-06 04:12:37 -0700 |
---|---|---|
committer | Reinette Chatre <reinette.chatre@intel.com> | 2010-04-16 13:46:38 -0700 |
commit | 00700ee007cf842ef2eb20201080ceddcfdaf9ad (patch) | |
tree | 7bfe01fc98ddf7f8326b68aa2d19ca5652dd127a /drivers | |
parent | 3a23d69582fa4bfcb443631bcd3d0d2afcc19208 (diff) |
iwlwifi: remove scan_bands logic
Since mac80211 will now never request scanning
multiple bands, we can remove all the associated
logic and scan a single band only in each scan.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-dev.h | 2 | ||||
-rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-scan.c | 59 | ||||
-rw-r--r-- | drivers/net/wireless/iwlwifi/iwl3945-base.c | 16 |
3 files changed, 25 insertions, 52 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index b2d94c7c6457..ee4cb028e138 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -1054,7 +1054,7 @@ struct iwl_priv { unsigned long scan_pass_start; unsigned long scan_start_tsf; void *scan; - int scan_bands; + enum ieee80211_band scan_band; struct cfg80211_scan_request *scan_request; bool is_internal_short_scan; u8 scan_tx_ant[IEEE80211_NUM_BANDS]; diff --git a/drivers/net/wireless/iwlwifi/iwl-scan.c b/drivers/net/wireless/iwlwifi/iwl-scan.c index c3b06c4b6f3e..3904bb45ca61 100644 --- a/drivers/net/wireless/iwlwifi/iwl-scan.c +++ b/drivers/net/wireless/iwlwifi/iwl-scan.c @@ -223,29 +223,16 @@ static void iwl_rx_scan_complete_notif(struct iwl_priv *priv, clear_bit(STATUS_SCAN_HW, &priv->status); IWL_DEBUG_INFO(priv, "Scan pass on %sGHz took %dms\n", - (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ? - "2.4" : "5.2", + (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, 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, * re-queuing another scan if one has been requested */ if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) { IWL_DEBUG_INFO(priv, "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) - goto reschedule; } if (!priv->is_internal_short_scan) @@ -259,12 +246,6 @@ static void iwl_rx_scan_complete_notif(struct iwl_priv *priv, 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) @@ -489,10 +470,13 @@ int iwl_mac_hw_scan(struct ieee80211_hw *hw, { unsigned long flags; struct iwl_priv *priv = hw->priv; - int ret, i; + int ret; IWL_DEBUG_MAC80211(priv, "enter\n"); + if (req->n_channels == 0) + return -EINVAL; + mutex_lock(&priv->mutex); spin_lock_irqsave(&priv->lock, flags); @@ -526,10 +510,8 @@ int iwl_mac_hw_scan(struct ieee80211_hw *hw, goto out_unlock; } - priv->scan_bands = 0; - for (i = 0; i < req->n_channels; i++) - priv->scan_bands |= BIT(req->channels[i]->band); - + /* 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); @@ -575,11 +557,7 @@ static void iwl_bg_start_internal_scan(struct work_struct *work) goto unlock; } - priv->scan_bands = 0; - if (priv->band == IEEE80211_BAND_5GHZ) - priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ); - else - priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ); + priv->scan_band = priv->band; IWL_DEBUG_SCAN(priv, "Start internal short scan...\n"); set_bit(STATUS_SCANNING, &priv->status); @@ -727,11 +705,6 @@ static void iwl_bg_request_scan(struct work_struct *data) goto done; } - if (!priv->scan_bands) { - IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n"); - goto done; - } - if (!priv->scan) { priv->scan = kmalloc(sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE, GFP_KERNEL); @@ -798,9 +771,8 @@ static void iwl_bg_request_scan(struct work_struct *data) scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id; scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; - - if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) { - band = IEEE80211_BAND_2GHZ; + switch (priv->scan_band) { + case IEEE80211_BAND_2GHZ: scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK; chan_mod = le32_to_cpu(priv->active_rxon.flags & RXON_FLG_CHANNEL_MODE_MSK) >> RXON_FLG_CHANNEL_MODE_POS; @@ -811,8 +783,8 @@ static void iwl_bg_request_scan(struct work_struct *data) rate_flags = RATE_MCS_CCK_MSK; } scan->good_CRC_th = 0; - } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) { - band = IEEE80211_BAND_5GHZ; + break; + case IEEE80211_BAND_5GHZ: rate = IWL_RATE_6M_PLCP; /* * If active scaning is requested but a certain channel @@ -827,13 +799,16 @@ static void iwl_bg_request_scan(struct work_struct *data) */ if (priv->cfg->off_channel_workaround) rx_ant = ANT_BC; - } else { + break; + default: IWL_WARN(priv, "Invalid scan band count\n"); goto done; } + band = priv->scan_band; + priv->scan_tx_ant[band] = - iwl_toggle_tx_ant(priv, 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); diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c index 24e969440b31..e26669558fc2 100644 --- a/drivers/net/wireless/iwlwifi/iwl3945-base.c +++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c @@ -2852,11 +2852,6 @@ static void iwl3945_bg_request_scan(struct work_struct *data) goto done; } - if (!priv->scan_bands) { - IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n"); - goto done; - } - if (!priv->scan) { priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE, GFP_KERNEL); @@ -2934,12 +2929,14 @@ static void iwl3945_bg_request_scan(struct work_struct *data) /* flags + rate selection */ - if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) { + switch (priv->scan_band) { + case IEEE80211_BAND_2GHZ: scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK; scan->tx_cmd.rate = IWL_RATE_1M_PLCP; scan->good_CRC_th = 0; band = IEEE80211_BAND_2GHZ; - } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) { + break; + case IEEE80211_BAND_5GHZ: scan->tx_cmd.rate = IWL_RATE_6M_PLCP; /* * If active scaning is requested but a certain channel @@ -2948,8 +2945,9 @@ static void iwl3945_bg_request_scan(struct work_struct *data) */ scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0; band = IEEE80211_BAND_5GHZ; - } else { - IWL_WARN(priv, "Invalid scan band count\n"); + break; + default: + IWL_WARN(priv, "Invalid scan band\n"); goto done; } |