iwlagn: support new P2P implementation

The previous P2P implementation turned out to
not work well and new uCode capabilities were
added to support P2P. Modify the driver to
take advantage of those, and also discover P2P
support automatically based on a uCode flag
instead of having a Kconfig symbol for P2P.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 15 insertions, 32 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
index 3bee0f119bc..4edb6cfc548 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
@@ -753,18 +753,6 @@ static int iwl_get_channels_for_scan(struct iwl_priv *priv,
 	return added;
 }
 
-static int iwl_fill_offch_tx(struct iwl_priv *priv, void *data, size_t maxlen)
-{
-	struct sk_buff *skb = priv->offchan_tx_skb;
-
-	if (skb->len < maxlen)
-		maxlen = skb->len;
-
-	memcpy(data, skb->data, maxlen);
-
-	return maxlen;
-}
-
 int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
 {
 	struct iwl_host_cmd cmd = {
@@ -807,7 +795,7 @@ int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
 	scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
 	scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
 
-	if (priv->scan_type != IWL_SCAN_OFFCH_TX &&
+	if (priv->scan_type != IWL_SCAN_ROC &&
 	    iwl_is_any_associated(priv)) {
 		u16 interval = 0;
 		u32 extra;
@@ -816,7 +804,7 @@ int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
 
 		IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
 		switch (priv->scan_type) {
-		case IWL_SCAN_OFFCH_TX:
+		case IWL_SCAN_ROC:
 			WARN_ON(1);
 			break;
 		case IWL_SCAN_RADIO_RESET:
@@ -838,10 +826,11 @@ int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
 		scan->suspend_time = cpu_to_le32(scan_suspend_time);
 		IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
 			       scan_suspend_time, interval);
-	} else if (priv->scan_type == IWL_SCAN_OFFCH_TX) {
+	} else if (priv->scan_type == IWL_SCAN_ROC) {
 		scan->suspend_time = 0;
-		scan->max_out_time =
-			cpu_to_le32(1024 * priv->offchan_tx_timeout);
+		scan->max_out_time = 0;
+		scan->quiet_time = 0;
+		scan->quiet_plcp_th = 0;
 	}
 
 	switch (priv->scan_type) {
@@ -869,8 +858,8 @@ int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
 		} else
 			IWL_DEBUG_SCAN(priv, "Start passive scan.\n");
 		break;
-	case IWL_SCAN_OFFCH_TX:
-		IWL_DEBUG_SCAN(priv, "Start offchannel TX scan.\n");
+	case IWL_SCAN_ROC:
+		IWL_DEBUG_SCAN(priv, "Start ROC scan.\n");
 		break;
 	}
 
@@ -988,19 +977,13 @@ int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
 					IWL_MAX_SCAN_SIZE - sizeof(*scan));
 		break;
 	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,
 					(struct ieee80211_mgmt *)scan->data,
 					iwl_bcast_addr, NULL, 0,
 					IWL_MAX_SCAN_SIZE - sizeof(*scan));
 		break;
-	case IWL_SCAN_OFFCH_TX:
-		cmd_len = iwl_fill_offch_tx(priv, scan->data,
-					    IWL_MAX_SCAN_SIZE
-					     - sizeof(*scan)
-					     - sizeof(struct iwl_scan_channel));
-		scan->scan_flags |= IWL_SCAN_FLAGS_ACTION_FRAME_TX;
-		break;
 	default:
 		BUG();
 	}
@@ -1021,18 +1004,18 @@ int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
 				is_active, n_probes,
 				(void *)&scan->data[cmd_len]);
 		break;
-	case IWL_SCAN_OFFCH_TX: {
+	case IWL_SCAN_ROC: {
 		struct iwl_scan_channel *scan_ch;
 
 		scan->channel_count = 1;
 
 		scan_ch = (void *)&scan->data[cmd_len];
-		scan_ch->type = SCAN_CHANNEL_TYPE_ACTIVE;
+		scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE;
 		scan_ch->channel =
-			cpu_to_le16(priv->offchan_tx_chan->hw_value);
+			cpu_to_le16(priv->hw_roc_channel->hw_value);
 		scan_ch->active_dwell =
-			cpu_to_le16(priv->offchan_tx_timeout);
-		scan_ch->passive_dwell = 0;
+		scan_ch->passive_dwell =
+			cpu_to_le16(priv->hw_roc_duration);
 
 		/* Set txpower levels to defaults */
 		scan_ch->dsp_atten = 110;
@@ -1041,7 +1024,7 @@ int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
 		 * power level:
 		 * scan_ch->tx_gain = ((1 << 5) | (2 << 3)) | 3;
 		 */
-		if (priv->offchan_tx_chan->band == IEEE80211_BAND_5GHZ)
+		if (priv->hw_roc_channel->band == IEEE80211_BAND_5GHZ)
 			scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3;
 		else
 			scan_ch->tx_gain = ((1 << 5) | (5 << 3));