qcacld-3.0: Send TDLS offchannel as 0, if only 2G is supported

Send TDLS offchannel as 0 if only 2G is supported otherwise
FW will do the TDLS offchannel in 2G and will result in MCC
and not desired in 2G.

Change-Id: Ieeea619526a3d8b04ac4bda3f3e0ca73aba2f78a
CRs-Fixed: 2517642

tdls/core/src/wlan_tdls_ct.c

@@ -973,7 +973,7 @@ int tdls_set_tdls_secoffchanneloffset(struct tdls_soc_priv_obj *tdls_soc,
 		tdls_soc->tdls_channel_offset = BW20;
 		break;
 	case TDLS_SEC_OFFCHAN_OFFSET_40PLUS:
-		tdls_soc->tdls_channel_offset = BW40_LOW_PRIMARY;
+		tdls_soc->tdls_channel_offset = BW40_HIGH_PRIMARY;
 		break;
 	case TDLS_SEC_OFFCHAN_OFFSET_40MINUS:
 		tdls_soc->tdls_channel_offset = BW40_LOW_PRIMARY;
@@ -1054,6 +1054,23 @@ int tdls_set_tdls_offchannelmode(struct wlan_objmgr_vdev *vdev,
 			   tdls_find_opclass(tdls_soc->soc,
 				chan_switch_params.tdls_off_ch,
 				chan_switch_params.tdls_off_ch_bw_offset);
+			if (!chan_switch_params.oper_class) {
+				if (chan_switch_params.tdls_off_ch_bw_offset ==
+				    BW40_HIGH_PRIMARY)
+					chan_switch_params.oper_class =
+					tdls_find_opclass(tdls_soc->soc,
+						chan_switch_params.tdls_off_ch,
+						BW40_LOW_PRIMARY);
+				else if (chan_switch_params.
+					 tdls_off_ch_bw_offset ==
+					 BW40_LOW_PRIMARY)
+					chan_switch_params.oper_class =
+					tdls_find_opclass(tdls_soc->soc,
+						chan_switch_params.tdls_off_ch,
+						BW40_HIGH_PRIMARY);
+				tdls_debug("oper_class:%d",
+					    chan_switch_params.oper_class);
+			}
 		} else {
 			tdls_err("TDLS off-channel parameters are not set yet!!!");
 			return -EINVAL;

tdls/core/src/wlan_tdls_main.c

@@ -1803,3 +1803,28 @@ void tdls_scan_serialization_comp_info_cb(struct wlan_objmgr_vdev *vdev,
 }
 
 
+uint8_t tdls_get_opclass_from_bandwidth(struct tdls_soc_priv_obj *soc_obj,
+					uint8_t channel, uint8_t bw_offset)
+{
+	uint8_t opclass;
+
+	if (bw_offset & (1 << BW_80_OFFSET_BIT)) {
+		opclass = tdls_find_opclass(soc_obj->soc,
+					    channel, BW80);
+	} else if (bw_offset & (1 << BW_40_OFFSET_BIT)) {
+		opclass = tdls_find_opclass(soc_obj->soc,
+					    channel, BW40_LOW_PRIMARY);
+		if (!opclass) {
+			opclass = tdls_find_opclass(soc_obj->soc,
+						    channel, BW40_HIGH_PRIMARY);
+		}
+	} else if (bw_offset & (1 << BW_20_OFFSET_BIT)) {
+		opclass = tdls_find_opclass(soc_obj->soc,
+					    channel, BW20);
+	} else {
+		opclass = tdls_find_opclass(soc_obj->soc,
+					    channel, BWALL);
+	}
+
+	return opclass;
+}

tdls/core/src/wlan_tdls_main.h

@@ -743,4 +743,18 @@ QDF_STATUS tdls_set_offchan_mode(struct wlan_objmgr_psoc *psoc,
 
 QDF_STATUS tdls_delete_all_peers_indication(struct wlan_objmgr_psoc *psoc,
 					    uint8_t vdev_id);
+
+/**
+ * tdls_get_opclass_from_bandwidth() - Return opclass for corresponding BW and
+ * channel.
+ * @soc_obj: tdls soc object.
+ * @channel: Channel number.
+ * @bw_offset: Bandwidth offset.
+ *
+ * To return the opclas.
+ *
+ * Return: opclass
+ */
+uint8_t tdls_get_opclass_from_bandwidth(struct tdls_soc_priv_obj *soc_obj,
+					uint8_t channel, uint8_t bw_offset);
 #endif

tdls/core/src/wlan_tdls_peer.c

@@ -26,6 +26,7 @@
 #include <wlan_reg_services_api.h>
 #include <wlan_utility.h>
 #include <wlan_policy_mgr_api.h>
+#include "wlan_reg_ucfg_api.h"
 
 static uint8_t calculate_hash_key(const uint8_t *macaddr)
 {
@@ -144,35 +145,6 @@ uint8_t tdls_find_opclass(struct wlan_objmgr_psoc *psoc, uint8_t channel,
 						     bw_offset);
 }
 
-static uint8_t
-tdls_get_opclass_from_bandwidth(struct tdls_soc_priv_obj *soc_obj,
-				struct tdls_peer *peer)
-{
-	uint8_t opclass;
-	uint8_t bw_offset = soc_obj->tdls_configs.tdls_pre_off_chan_bw;
-	uint8_t channel = peer->pref_off_chan_num;
-
-	if (bw_offset & (1 << BW_80_OFFSET_BIT)) {
-		opclass = tdls_find_opclass(soc_obj->soc,
-					    channel, BW80);
-	} else if (bw_offset & (1 << BW_40_OFFSET_BIT)) {
-		opclass = tdls_find_opclass(soc_obj->soc,
-					    channel, BW40_LOW_PRIMARY);
-		if (!opclass) {
-			opclass = tdls_find_opclass(soc_obj->soc,
-						    channel, BW40_HIGH_PRIMARY);
-		}
-	} else if (bw_offset & (1 << BW_20_OFFSET_BIT)) {
-		opclass = tdls_find_opclass(soc_obj->soc,
-					    channel, BW20);
-	} else {
-		opclass = tdls_find_opclass(soc_obj->soc,
-					    channel, BWALL);
-	}
-
-	return opclass;
-}
-
 /**
  * tdls_add_peer() - add TDLS peer in TDLS vdev object
  * @vdev_obj: TDLS vdev object
@@ -211,7 +183,9 @@ static struct tdls_peer *tdls_add_peer(struct tdls_vdev_priv_obj *vdev_obj,
 	peer->pref_off_chan_num =
 		soc_obj->tdls_configs.tdls_pre_off_chan_num;
 	peer->op_class_for_pref_off_chan =
-		tdls_get_opclass_from_bandwidth(soc_obj, peer);
+		tdls_get_opclass_from_bandwidth(soc_obj,
+				peer->pref_off_chan_num,
+				soc_obj->tdls_configs.tdls_pre_off_chan_bw);
 
 	peer->sta_id = INVALID_TDLS_PEER_ID;
 
@@ -498,6 +472,7 @@ void tdls_extract_peer_state_param(struct tdls_peer_update_state *peer_param,
 	enum channel_state ch_state;
 	struct wlan_objmgr_pdev *pdev;
 	uint8_t chan_id;
+	enum band_info cur_band = BAND_ALL;
 
 	vdev_obj = peer->vdev_priv;
 	soc_obj = wlan_vdev_get_tdls_soc_obj(vdev_obj->vdev);
@@ -527,6 +502,16 @@ void tdls_extract_peer_state_param(struct tdls_peer_update_state *peer_param,
 	peer_param->peer_cap.opclass_for_prefoffchan =
 		peer->op_class_for_pref_off_chan;
 
+	if (QDF_STATUS_SUCCESS != ucfg_reg_get_band(pdev, &cur_band)) {
+		tdls_err("not able get the current frequency band");
+		return;
+	}
+
+	if (BAND_2G == cur_band) {
+		tdls_err("sending the offchannel value as 0 as only 2g is supported");
+		peer_param->peer_cap.pref_off_channum = 0;
+		peer_param->peer_cap.opclass_for_prefoffchan = 0;
+	}
 	if (wlan_reg_is_dfs_ch(pdev, peer_param->peer_cap.pref_off_channum)) {
 		tdls_err("Resetting TDLS off-channel from %d to %d",
 			 peer_param->peer_cap.pref_off_channum,
@@ -778,7 +763,9 @@ QDF_STATUS tdls_reset_peer(struct tdls_vdev_priv_obj *vdev_obj,
 		config = &soc_obj->tdls_configs;
 		curr_peer->pref_off_chan_num = config->tdls_pre_off_chan_num;
 		curr_peer->op_class_for_pref_off_chan =
-			tdls_get_opclass_from_bandwidth(soc_obj, curr_peer);
+			tdls_get_opclass_from_bandwidth(soc_obj,
+				curr_peer->pref_off_chan_num,
+				soc_obj->tdls_configs.tdls_pre_off_chan_bw);
 	}
 
 	tdls_set_peer_link_status(curr_peer, TDLS_LINK_IDLE,