iwl3945: use iwl_bss_info_changed

3945 can use iwl_bss_info_changed.
A new lib op is created for post_assoicate to distinguish between
3945 and iwlwifi's post_associate operations.

Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 136 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index 84ac1cec6f5b..15691829e023 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -2157,6 +2157,142 @@ int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
 	return 0;
 }
 EXPORT_SYMBOL(iwl_mac_conf_tx);
+
+static void iwl_ht_conf(struct iwl_priv *priv,
+			    struct ieee80211_bss_conf *bss_conf)
+{
+	struct ieee80211_sta_ht_cap *ht_conf;
+	struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
+	struct ieee80211_sta *sta;
+
+	IWL_DEBUG_MAC80211(priv, "enter: \n");
+
+	if (!iwl_conf->is_ht)
+		return;
+
+
+	/*
+	 * It is totally wrong to base global information on something
+	 * that is valid only when associated, alas, this driver works
+	 * that way and I don't know how to fix it.
+	 */
+
+	rcu_read_lock();
+	sta = ieee80211_find_sta(priv->hw, priv->bssid);
+	if (!sta) {
+		rcu_read_unlock();
+		return;
+	}
+	ht_conf = &sta->ht_cap;
+
+	if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
+		iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
+	if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
+		iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
+
+	iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
+	iwl_conf->max_amsdu_size =
+		!!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
+
+	iwl_conf->supported_chan_width =
+		!!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
+
+	/*
+	 * XXX: The HT configuration needs to be moved into iwl_mac_config()
+	 *	to be done there correctly.
+	 */
+
+	iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
+	if (conf_is_ht40_minus(&priv->hw->conf))
+		iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
+	else if (conf_is_ht40_plus(&priv->hw->conf))
+		iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
+
+	/* If no above or below channel supplied disable FAT channel */
+	if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
+	    iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW)
+		iwl_conf->supported_chan_width = 0;
+
+	iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
+
+	memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
+
+	iwl_conf->tx_chan_width = iwl_conf->supported_chan_width != 0;
+	iwl_conf->ht_protection =
+		bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
+	iwl_conf->non_GF_STA_present =
+		!!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
+
+	rcu_read_unlock();
+
+	IWL_DEBUG_MAC80211(priv, "leave\n");
+}
+
+#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
+void iwl_bss_info_changed(struct ieee80211_hw *hw,
+				     struct ieee80211_vif *vif,
+				     struct ieee80211_bss_conf *bss_conf,
+				     u32 changes)
+{
+	struct iwl_priv *priv = hw->priv;
+
+	IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
+
+	if (changes & BSS_CHANGED_ERP_PREAMBLE) {
+		IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
+				   bss_conf->use_short_preamble);
+		if (bss_conf->use_short_preamble)
+			priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
+		else
+			priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
+	}
+
+	if (changes & BSS_CHANGED_ERP_CTS_PROT) {
+		IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
+		if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
+			priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
+		else
+			priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
+	}
+
+	if (changes & BSS_CHANGED_HT) {
+		iwl_ht_conf(priv, bss_conf);
+		iwl_set_rxon_chain(priv);
+	}
+
+	if (changes & BSS_CHANGED_ASSOC) {
+		IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
+		/* This should never happen as this function should
+		 * never be called from interrupt context. */
+		if (WARN_ON_ONCE(in_interrupt()))
+			return;
+		if (bss_conf->assoc) {
+			priv->assoc_id = bss_conf->aid;
+			priv->beacon_int = bss_conf->beacon_int;
+			priv->power_data.dtim_period = bss_conf->dtim_period;
+			priv->timestamp = bss_conf->timestamp;
+			priv->assoc_capability = bss_conf->assoc_capability;
+
+			/* we have just associated, don't start scan too early
+			 * leave time for EAPOL exchange to complete
+			 */
+			priv->next_scan_jiffies = jiffies +
+					IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
+			mutex_lock(&priv->mutex);
+			priv->cfg->ops->lib->post_associate(priv);
+			mutex_unlock(&priv->mutex);
+		} else {
+			priv->assoc_id = 0;
+			IWL_DEBUG_MAC80211(priv, "DISASSOC %d\n", bss_conf->assoc);
+		}
+	} else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
+			IWL_DEBUG_MAC80211(priv, "Associated Changes %d\n", changes);
+			iwl_send_rxon_assoc(priv);
+	}
+
+}
+EXPORT_SYMBOL(iwl_bss_info_changed);
+
 #ifdef CONFIG_PM
 
 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)