diff options
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-core.h | 21 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-scan.c | 42 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl3945-base.c | 289 |
3 files changed, 51 insertions, 301 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h index 2f23f78296e..409caaa31bb 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.h +++ b/drivers/net/wireless/iwlwifi/iwl-core.h @@ -316,9 +316,30 @@ void iwl_init_scan_params(struct iwl_priv *priv); int iwl_scan_cancel(struct iwl_priv *priv); int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms); int iwl_scan_initiate(struct iwl_priv *priv); +u16 iwl_fill_probe_req(struct iwl_priv *priv, enum ieee80211_band band, + struct ieee80211_mgmt *frame, int left); void iwl_setup_rx_scan_handlers(struct iwl_priv *priv); +u16 iwl_get_active_dwell_time(struct iwl_priv *priv, + enum ieee80211_band band, + u8 n_probes); +u16 iwl_get_passive_dwell_time(struct iwl_priv *priv, + enum ieee80211_band band); +void iwl_bg_scan_check(struct work_struct *data); +void iwl_bg_abort_scan(struct work_struct *work); +void iwl_bg_scan_completed(struct work_struct *work); void iwl_setup_scan_deferred_work(struct iwl_priv *priv); +/* 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_ACTIVE_QUIET_TIME __constant_cpu_to_le16(10) /* msec */ +#define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */ + +#define IWL_SCAN_PROBE_MASK(n) cpu_to_le32((BIT(n) | (BIT(n) - BIT(1)))) + /******************************************************************************* * Calibrations - implemented in iwl-calib.c ******************************************************************************/ diff --git a/drivers/net/wireless/iwlwifi/iwl-scan.c b/drivers/net/wireless/iwlwifi/iwl-scan.c index e510f516599..0ce122a1734 100644 --- a/drivers/net/wireless/iwlwifi/iwl-scan.c +++ b/drivers/net/wireless/iwlwifi/iwl-scan.c @@ -46,15 +46,6 @@ #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 - * 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(10) /* msec */ - /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel. * Must be set longer than active dwell time. * For the most reliable scan, set > AP beacon interval (typically 100msec). */ @@ -63,7 +54,6 @@ #define IWL_PASSIVE_DWELL_BASE (100) #define IWL_CHANNEL_TUNE_TIME 5 -#define IWL_SCAN_PROBE_MASK(n) cpu_to_le32((BIT(n) | (BIT(n) - BIT(1)))) /** @@ -296,9 +286,9 @@ 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, - u8 n_probes) +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 + @@ -307,9 +297,10 @@ static inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv, 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) { u16 passive = (band == IEEE80211_BAND_2GHZ) ? IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 : @@ -327,6 +318,7 @@ static u16 iwl_get_passive_dwell_time(struct iwl_priv *priv, return passive; } +EXPORT_SYMBOL(iwl_get_passive_dwell_time); static int iwl_get_channels_for_scan(struct iwl_priv *priv, enum ieee80211_band band, @@ -450,7 +442,7 @@ EXPORT_SYMBOL(iwl_scan_initiate); #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); @@ -470,6 +462,8 @@ static void iwl_bg_scan_check(struct work_struct *data) } mutex_unlock(&priv->mutex); } +EXPORT_SYMBOL(iwl_bg_scan_check); + /** * iwl_supported_rate_to_ie - fill in the supported rate in IE field * @@ -527,10 +521,10 @@ static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband, * 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) +u16 iwl_fill_probe_req(struct iwl_priv *priv, + enum ieee80211_band band, + struct ieee80211_mgmt *frame, + int left) { int len = 0; u8 *pos = NULL; @@ -624,6 +618,7 @@ static u16 iwl_fill_probe_req(struct iwl_priv *priv, return (u16)len; } +EXPORT_SYMBOL(iwl_fill_probe_req); static void iwl_bg_request_scan(struct work_struct *data) { @@ -839,7 +834,7 @@ static void iwl_bg_request_scan(struct work_struct *data) mutex_unlock(&priv->mutex); } -static void iwl_bg_abort_scan(struct work_struct *work) +void iwl_bg_abort_scan(struct work_struct *work) { struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan); @@ -853,8 +848,9 @@ static void iwl_bg_abort_scan(struct work_struct *work) mutex_unlock(&priv->mutex); } +EXPORT_SYMBOL(iwl_bg_abort_scan); -static void iwl_bg_scan_completed(struct work_struct *work) +void iwl_bg_scan_completed(struct work_struct *work) { struct iwl_priv *priv = container_of(work, struct iwl_priv, scan_completed); @@ -872,7 +868,7 @@ static void iwl_bg_scan_completed(struct work_struct *work) 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) { diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c index 997ac33500f..c7bb9c19a90 100644 --- a/drivers/net/wireless/iwlwifi/iwl3945-base.c +++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c @@ -791,47 +791,6 @@ static int iwl3945_send_bt_config(struct iwl_priv *priv) sizeof(bt_cmd), &bt_cmd); } -static int iwl3945_send_scan_abort(struct iwl_priv *priv) -{ - int rc = 0; - struct iwl_rx_packet *res; - struct iwl_host_cmd cmd = { - .id = REPLY_SCAN_ABORT_CMD, - .meta.flags = CMD_WANT_SKB, - }; - - /* If there isn't a scan actively going on in the hardware - * then we are in between scan bands and not actually - * actively scanning, so don't send the abort command */ - if (!test_bit(STATUS_SCAN_HW, &priv->status)) { - clear_bit(STATUS_SCAN_ABORTING, &priv->status); - return 0; - } - - rc = iwl_send_cmd_sync(priv, &cmd); - if (rc) { - clear_bit(STATUS_SCAN_ABORTING, &priv->status); - return rc; - } - - res = (struct iwl_rx_packet *)cmd.meta.u.skb->data; - if (res->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); - clear_bit(STATUS_SCAN_ABORTING, &priv->status); - clear_bit(STATUS_SCAN_HW, &priv->status); - } - - dev_kfree_skb_any(cmd.meta.u.skb); - - return rc; -} - static int iwl3945_add_sta_sync_callback(struct iwl_priv *priv, struct iwl_cmd *cmd, struct sk_buff *skb) { @@ -1168,115 +1127,6 @@ static void iwl3945_unset_hw_params(struct iwl_priv *priv) priv->shared_phys); } -/** - * iwl3945_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 iwl3945_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] = iwl3945_rates[i].ieee | - ((bit & basic_rate) ? 0x80 : 0x00); - (*cnt)++; - (*left)--; - if ((*left <= 0) || - (*cnt >= IWL_SUPPORTED_RATES_IE_LEN)) - break; - } - } - - return ret_rates; -} - -/** - * iwl3945_fill_probe_req - fill in all required fields and IE for probe request - */ -static u16 iwl3945_fill_probe_req(struct iwl_priv *priv, - struct ieee80211_mgmt *frame, - int left) -{ - int len = 0; - u8 *pos = NULL; - u16 active_rates, ret_rates, cck_rates; - - /* 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->sa, priv->mac_addr, ETH_ALEN); - memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN); - frame->seq_ctrl = 0; - - /* fill in our indirect SSID IE */ - /* ...next 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 supported rate */ - /* ...next IE... */ - left -= 2; - if (left < 0) - return 0; - - /* ... fill it in... */ - *pos++ = WLAN_EID_SUPP_RATES; - *pos = 0; - - priv->active_rate = priv->rates_mask; - active_rates = priv->active_rate; - priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK; - - cck_rates = IWL_CCK_RATES_MASK & active_rates; - ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates, - priv->active_rate_basic, &left); - active_rates &= ~ret_rates; - - ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates, - priv->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; - iwl3945_supported_rate_to_ie(pos, active_rates, - priv->active_rate_basic, &left); - if (*pos > 0) - len += 2 + *pos; - - fill_end: - return (u16)len; -} - /* * QoS support */ @@ -3955,66 +3805,6 @@ static void iwl3945_free_channel_map(struct iwl_priv *priv) priv->channel_count = 0; } -/* 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 (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 - * 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(10) /* msec */ - -/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel. - * Must be set longer than active dwell time. - * For the most reliable scan, set > AP beacon interval (typically 100msec). */ -#define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */ -#define IWL_PASSIVE_DWELL_TIME_52 (10) -#define IWL_PASSIVE_DWELL_BASE (100) -#define IWL_CHANNEL_TUNE_TIME 5 - -#define IWL_SCAN_PROBE_MASK(n) (BIT(n) | (BIT(n) - BIT(1))) - -static inline u16 iwl3945_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 + - IWL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1); - else - return IWL_ACTIVE_DWELL_TIME_24 + - IWL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1); -} - -static u16 iwl3945_get_passive_dwell_time(struct iwl_priv *priv, - enum ieee80211_band band) -{ - 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 (iwl3945_is_associated(priv)) { - /* 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; - if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive) - passive = IWL_PASSIVE_DWELL_BASE; - passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2; - } - - return passive; -} - static int iwl3945_get_channels_for_scan(struct iwl_priv *priv, enum ieee80211_band band, u8 is_active, u8 n_probes, @@ -4033,8 +3823,8 @@ static int iwl3945_get_channels_for_scan(struct iwl_priv *priv, channels = sband->channels; - active_dwell = iwl3945_get_active_dwell_time(priv, band, n_probes); - passive_dwell = iwl3945_get_passive_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; @@ -5135,28 +4925,6 @@ static void iwl3945_rfkill_poll(struct work_struct *data) } #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ) - -static void iwl3945_bg_scan_check(struct work_struct *data) -{ - struct iwl_priv *priv = - container_of(data, struct iwl_priv, scan_check.work); - - if (test_bit(STATUS_EXIT_PENDING, &priv->status)) - return; - - mutex_lock(&priv->mutex); - if (test_bit(STATUS_SCANNING, &priv->status) || - test_bit(STATUS_SCAN_ABORTING, &priv->status)) { - IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, - "Scan completion watchdog resetting adapter (%dms)\n", - jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG)); - - if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) - iwl3945_send_scan_abort(priv); - } - mutex_unlock(&priv->mutex); -} - static void iwl3945_bg_request_scan(struct work_struct *data) { struct iwl_priv *priv = @@ -5284,9 +5052,6 @@ static void iwl3945_bg_request_scan(struct work_struct *data) /* We don't build a direct scan probe request; the uCode will do * that based on the direct_mask added to each channel entry */ - scan->tx_cmd.len = cpu_to_le16( - iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data, - IWL_MAX_SCAN_SIZE - sizeof(*scan))); 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; @@ -5307,6 +5072,11 @@ static void iwl3945_bg_request_scan(struct work_struct *data) goto done; } + scan->tx_cmd.len = cpu_to_le16( + iwl_fill_probe_req(priv, band, + (struct ieee80211_mgmt *)scan->data, + IWL_MAX_SCAN_SIZE - sizeof(*scan))); + /* select Rx antennas */ scan->flags |= iwl3945_get_antenna_flags(priv); @@ -5482,45 +5252,8 @@ static void iwl3945_post_associate(struct iwl_priv *priv) priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN; } -static void iwl3945_bg_abort_scan(struct work_struct *work) -{ - struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan); - - if (!iwl_is_ready(priv)) - return; - - mutex_lock(&priv->mutex); - - set_bit(STATUS_SCAN_ABORTING, &priv->status); - iwl3945_send_scan_abort(priv); - - mutex_unlock(&priv->mutex); -} - static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed); -static void iwl3945_bg_scan_completed(struct work_struct *work) -{ - struct iwl_priv *priv = - container_of(work, struct iwl_priv, scan_completed); - - IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n"); - - if (test_bit(STATUS_EXIT_PENDING, &priv->status)) - return; - - if (test_bit(STATUS_CONF_PENDING, &priv->status)) - iwl3945_mac_config(priv->hw, 0); - - ieee80211_scan_completed(priv->hw); - - /* Since setting the TXPOWER may have been deferred while - * performing the scan, fire one off */ - mutex_lock(&priv->mutex); - priv->cfg->ops->lib->send_tx_power(priv); - mutex_unlock(&priv->mutex); -} - /***************************************************************************** * * mac80211 entry point functions @@ -6821,15 +6554,15 @@ static void iwl3945_setup_deferred_work(struct iwl_priv *priv) INIT_WORK(&priv->up, iwl3945_bg_up); INIT_WORK(&priv->restart, iwl3945_bg_restart); INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish); - INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed); - INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan); - INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan); INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill); INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update); INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start); INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start); - INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check); INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll); + INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed); + INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan); + INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan); + INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check); iwl3945_hw_setup_deferred_work(priv); |