1 files changed, 434 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index 21f386568c9..4f2b88c59c7 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -28,6 +28,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/etherdevice.h>
 #include <net/mac80211.h>
 
 #include "iwl-eeprom.h"
@@ -403,6 +404,7 @@ static void iwlcore_init_hw_rates(struct iwl_priv *priv,
 	}
 }
 
+
 /**
  * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
  */
@@ -586,6 +588,167 @@ u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
 }
 EXPORT_SYMBOL(iwl_is_fat_tx_allowed);
 
+void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
+{
+	struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
+
+	if (hw_decrypt)
+		rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
+	else
+		rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
+
+}
+EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
+
+/**
+ * iwl_check_rxon_cmd - validate RXON structure is valid
+ *
+ * NOTE:  This is really only useful during development and can eventually
+ * be #ifdef'd out once the driver is stable and folks aren't actively
+ * making changes
+ */
+int iwl_check_rxon_cmd(struct iwl_priv *priv)
+{
+	int error = 0;
+	int counter = 1;
+	struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
+
+	if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
+		error |= le32_to_cpu(rxon->flags &
+				(RXON_FLG_TGJ_NARROW_BAND_MSK |
+				 RXON_FLG_RADAR_DETECT_MSK));
+		if (error)
+			IWL_WARN(priv, "check 24G fields %d | %d\n",
+				    counter++, error);
+	} else {
+		error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
+				0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
+		if (error)
+			IWL_WARN(priv, "check 52 fields %d | %d\n",
+				    counter++, error);
+		error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
+		if (error)
+			IWL_WARN(priv, "check 52 CCK %d | %d\n",
+				    counter++, error);
+	}
+	error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
+	if (error)
+		IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
+
+	/* make sure basic rates 6Mbps and 1Mbps are supported */
+	error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
+		  ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
+	if (error)
+		IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
+
+	error |= (le16_to_cpu(rxon->assoc_id) > 2007);
+	if (error)
+		IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
+
+	error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
+			== (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
+	if (error)
+		IWL_WARN(priv, "check CCK and short slot %d | %d\n",
+			    counter++, error);
+
+	error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
+			== (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
+	if (error)
+		IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
+			    counter++, error);
+
+	error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
+			RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
+	if (error)
+		IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
+			    counter++, error);
+
+	if (error)
+		IWL_WARN(priv, "Tuning to channel %d\n",
+			    le16_to_cpu(rxon->channel));
+
+	if (error) {
+		IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
+		return -1;
+	}
+	return 0;
+}
+EXPORT_SYMBOL(iwl_check_rxon_cmd);
+
+/**
+ * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
+ * @priv: staging_rxon is compared to active_rxon
+ *
+ * If the RXON structure is changing enough to require a new tune,
+ * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
+ * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
+ */
+int iwl_full_rxon_required(struct iwl_priv *priv)
+{
+
+	/* These items are only settable from the full RXON command */
+	if (!(iwl_is_associated(priv)) ||
+	    compare_ether_addr(priv->staging_rxon.bssid_addr,
+			       priv->active_rxon.bssid_addr) ||
+	    compare_ether_addr(priv->staging_rxon.node_addr,
+			       priv->active_rxon.node_addr) ||
+	    compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
+			       priv->active_rxon.wlap_bssid_addr) ||
+	    (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
+	    (priv->staging_rxon.channel != priv->active_rxon.channel) ||
+	    (priv->staging_rxon.air_propagation !=
+	     priv->active_rxon.air_propagation) ||
+	    (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
+	     priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
+	    (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
+	     priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
+	    (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
+		return 1;
+
+	/* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
+	 * be updated with the RXON_ASSOC command -- however only some
+	 * flag transitions are allowed using RXON_ASSOC */
+
+	/* Check if we are not switching bands */
+	if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
+	    (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
+		return 1;
+
+	/* Check if we are switching association toggle */
+	if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
+		(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
+		return 1;
+
+	return 0;
+}
+EXPORT_SYMBOL(iwl_full_rxon_required);
+
+u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
+{
+	int i;
+	int rate_mask;
+
+	/* Set rate mask*/
+	if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
+		rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
+	else
+		rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
+
+	/* Find lowest valid rate */
+	for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
+					i = iwl_rates[i].next_ieee) {
+		if (rate_mask & (1 << i))
+			return iwl_rates[i].plcp;
+	}
+
+	/* No valid rate was found. Assign the lowest one */
+	if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
+		return IWL_RATE_1M_PLCP;
+	else
+		return IWL_RATE_6M_PLCP;
+}
+EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
+
 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info)
 {
 	struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
@@ -821,6 +984,277 @@ int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
 }
 EXPORT_SYMBOL(iwl_set_rxon_channel);
 
+void iwl_set_flags_for_band(struct iwl_priv *priv,
+			    enum ieee80211_band band)
+{
+	if (band == IEEE80211_BAND_5GHZ) {
+		priv->staging_rxon.flags &=
+		    ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
+		      | RXON_FLG_CCK_MSK);
+		priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
+	} else {
+		/* Copied from iwl_post_associate() */
+		if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
+			priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
+		else
+			priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
+
+		if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
+			priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
+
+		priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
+		priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
+		priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
+	}
+}
+EXPORT_SYMBOL(iwl_set_flags_for_band);
+
+/*
+ * initialize rxon structure with default values from eeprom
+ */
+void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
+{
+	const struct iwl_channel_info *ch_info;
+
+	memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
+
+	switch (mode) {
+	case NL80211_IFTYPE_AP:
+		priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
+		break;
+
+	case NL80211_IFTYPE_STATION:
+		priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
+		priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
+		break;
+
+	case NL80211_IFTYPE_ADHOC:
+		priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
+		priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
+		priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
+						  RXON_FILTER_ACCEPT_GRP_MSK;
+		break;
+
+	case NL80211_IFTYPE_MONITOR:
+		priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
+		priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
+		    RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
+		break;
+	default:
+		IWL_ERR(priv, "Unsupported interface type %d\n", mode);
+		break;
+	}
+
+#if 0
+	/* TODO:  Figure out when short_preamble would be set and cache from
+	 * that */
+	if (!hw_to_local(priv->hw)->short_preamble)
+		priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
+	else
+		priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
+#endif
+
+	ch_info = iwl_get_channel_info(priv, priv->band,
+				       le16_to_cpu(priv->active_rxon.channel));
+
+	if (!ch_info)
+		ch_info = &priv->channel_info[0];
+
+	/*
+	 * in some case A channels are all non IBSS
+	 * in this case force B/G channel
+	 */
+	if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
+	    !(is_channel_ibss(ch_info)))
+		ch_info = &priv->channel_info[0];
+
+	priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
+	priv->band = ch_info->band;
+
+	iwl_set_flags_for_band(priv, priv->band);
+
+	priv->staging_rxon.ofdm_basic_rates =
+	    (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
+	priv->staging_rxon.cck_basic_rates =
+	    (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
+
+	priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
+					RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
+	memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
+	memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
+	priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
+	priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
+}
+EXPORT_SYMBOL(iwl_connection_init_rx_config);
+
+void iwl_set_rate(struct iwl_priv *priv)
+{
+	const struct ieee80211_supported_band *hw = NULL;
+	struct ieee80211_rate *rate;
+	int i;
+
+	hw = iwl_get_hw_mode(priv, priv->band);
+	if (!hw) {
+		IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
+		return;
+	}
+
+	priv->active_rate = 0;
+	priv->active_rate_basic = 0;
+
+	for (i = 0; i < hw->n_bitrates; i++) {
+		rate = &(hw->bitrates[i]);
+		if (rate->hw_value < IWL_RATE_COUNT)
+			priv->active_rate |= (1 << rate->hw_value);
+	}
+
+	IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
+		       priv->active_rate, priv->active_rate_basic);
+
+	/*
+	 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
+	 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
+	 * OFDM
+	 */
+	if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
+		priv->staging_rxon.cck_basic_rates =
+		    ((priv->active_rate_basic &
+		      IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
+	else
+		priv->staging_rxon.cck_basic_rates =
+		    (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
+
+	if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
+		priv->staging_rxon.ofdm_basic_rates =
+		    ((priv->active_rate_basic &
+		      (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
+		      IWL_FIRST_OFDM_RATE) & 0xFF;
+	else
+		priv->staging_rxon.ofdm_basic_rates =
+		   (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
+}
+EXPORT_SYMBOL(iwl_set_rate);
+
+void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
+{
+	struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
+	struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
+	struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
+	IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
+		      le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
+	rxon->channel = csa->channel;
+	priv->staging_rxon.channel = csa->channel;
+}
+EXPORT_SYMBOL(iwl_rx_csa);
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
+{
+	struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
+
+	IWL_DEBUG_RADIO("RX CONFIG:\n");
+	iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
+	IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
+	IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
+	IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
+			le32_to_cpu(rxon->filter_flags));
+	IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
+	IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
+			rxon->ofdm_basic_rates);
+	IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
+	IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
+	IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
+	IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
+}
+#endif
+
+/**
+ * iwl_irq_handle_error - called for HW or SW error interrupt from card
+ */
+void iwl_irq_handle_error(struct iwl_priv *priv)
+{
+	/* Set the FW error flag -- cleared on iwl_down */
+	set_bit(STATUS_FW_ERROR, &priv->status);
+
+	/* Cancel currently queued command. */
+	clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+	if (priv->debug_level & IWL_DL_FW_ERRORS) {
+		iwl_dump_nic_error_log(priv);
+		iwl_dump_nic_event_log(priv);
+		iwl_print_rx_config_cmd(priv);
+	}
+#endif
+
+	wake_up_interruptible(&priv->wait_command_queue);
+
+	/* Keep the restart process from trying to send host
+	 * commands by clearing the INIT status bit */
+	clear_bit(STATUS_READY, &priv->status);
+
+	if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
+		IWL_DEBUG(IWL_DL_FW_ERRORS,
+			  "Restarting adapter due to uCode error.\n");
+
+		if (iwl_is_associated(priv)) {
+			memcpy(&priv->recovery_rxon, &priv->active_rxon,
+			       sizeof(priv->recovery_rxon));
+			priv->error_recovering = 1;
+		}
+		if (priv->cfg->mod_params->restart_fw)
+			queue_work(priv->workqueue, &priv->restart);
+	}
+}
+EXPORT_SYMBOL(iwl_irq_handle_error);
+
+void iwl_configure_filter(struct ieee80211_hw *hw,
+			  unsigned int changed_flags,
+			  unsigned int *total_flags,
+			  int mc_count, struct dev_addr_list *mc_list)
+{
+	struct iwl_priv *priv = hw->priv;
+	__le32 *filter_flags = &priv->staging_rxon.filter_flags;
+
+	IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
+			changed_flags, *total_flags);
+
+	if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
+		if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
+			*filter_flags |= RXON_FILTER_PROMISC_MSK;
+		else
+			*filter_flags &= ~RXON_FILTER_PROMISC_MSK;
+	}
+	if (changed_flags & FIF_ALLMULTI) {
+		if (*total_flags & FIF_ALLMULTI)
+			*filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
+		else
+			*filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
+	}
+	if (changed_flags & FIF_CONTROL) {
+		if (*total_flags & FIF_CONTROL)
+			*filter_flags |= RXON_FILTER_CTL2HOST_MSK;
+		else
+			*filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
+	}
+	if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
+		if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
+			*filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
+		else
+			*filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
+	}
+
+	/* We avoid iwl_commit_rxon here to commit the new filter flags
+	 * since mac80211 will call ieee80211_hw_config immediately.
+	 * (mc_list is not supported at this time). Otherwise, we need to
+	 * queue a background iwl_commit_rxon work.
+	 */
+
+	*total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
+			FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
+}
+EXPORT_SYMBOL(iwl_configure_filter);
+
 int iwl_setup_mac(struct iwl_priv *priv)
 {
 	int ret;