qcacld-3.0: Add support to disable TDLS offchannel completely

Add support for new TDLS off-channel mode type:
DISABLE_ACTIVE_CHANSWITCH. With this
off channel mode, the TDLS off-channel will be disabled
completely without passive disable mode.
DISABLE_CHANSWITCH -> Passive channel switch can be done i.e if
peer requests channel switch then firmware can do channel switch
DISABLE_ACTIVE_CHANSWITCH -> Disable all off-channel switches.

Add support to send peer channel lists based on concurrency
combination. Override the ini configured frequency to the
supported frequency based on the current concurrency.

Change-Id: Ie3210178eb8b57d6ab126a730ed91895b70edaa1
CRs-Fixed: 3416213

components/cmn_services/policy_mgr/inc/wlan_policy_mgr_api.h

@@ -4919,4 +4919,23 @@ uint32_t policy_mgr_get_connection_count_with_ch_freq(uint32_t ch_freq);
 bool policy_mgr_is_sap_allowed_on_indoor(struct wlan_objmgr_pdev *pdev,
 					 uint8_t vdev_id, qdf_freq_t ch_freq);
 
+#ifdef WLAN_FEATURE_TDLS_CONCURRENCIES
+/**
+ * policy_mgr_get_allowed_tdls_offchannel_freq() - Check if TDLS off-channel is
+ * allowed during concurrency. When off-channel is allowed, update the provided
+ * input channel frequency with concurrent vdev frequency in DBS case.
+ * Fill the provided channel frequency as 0 if all 5GHz/6GHz channels are
+ * allowed for off-channel operation in SCC case.
+ * Don't allow off channel operation in any MCC case.
+ * @psoc: psoc pointer
+ * @vdev: vdev pointer
+ * @ch_freq: Frequency pointer
+ *
+ * Return: true or false based on current concurrency combination
+ */
+bool
+policy_mgr_get_allowed_tdls_offchannel_freq(struct wlan_objmgr_psoc *psoc,
+					    struct wlan_objmgr_vdev *vdev,
+					    qdf_freq_t *ch_freq);
+#endif /* WLAN_FEATURE_TDLS_CONCURRENCIES */
 #endif /* __WLAN_POLICY_MGR_API_H */

components/cmn_services/policy_mgr/src/wlan_policy_mgr_action.c

@@ -3543,3 +3543,122 @@ ret_value:
 	return value;
 }
 
+#ifdef WLAN_FEATURE_TDLS_CONCURRENCIES
+bool
+policy_mgr_get_allowed_tdls_offchannel_freq(struct wlan_objmgr_psoc *psoc,
+					    struct wlan_objmgr_vdev *vdev,
+					    qdf_freq_t *ch_freq)
+{
+	struct connection_info info[MAX_NUMBER_OF_CONC_CONNECTIONS] = {0};
+	uint8_t connection_count, i, j, sta_vdev_id;
+
+	*ch_freq = 0;
+	/*
+	 * TDLS off channel is not allowed in any MCC scenario
+	 */
+	if (policy_mgr_current_concurrency_is_mcc(psoc)) {
+		policy_mgr_dump_current_concurrency(psoc);
+		policy_mgr_debug("TDLS off channel not allowed in MCC");
+		return false;
+	}
+
+	/*
+	 * TDLS offchannel is done only when STA is connected on 2G channel and
+	 * the current concurrency is not MCC
+	 */
+	if (!policy_mgr_is_sta_connected_2g(psoc)) {
+		policy_mgr_debug("STA not-connected on 2.4 Ghz");
+		return false;
+	}
+
+	/*
+	 * 2 Port DBS scenario - Allow non-STA vdev channel for
+	 * TDLS off-channel operation
+	 *
+	 * 3 Port Scenario - If STA Vdev is on SCC, allow TDLS off-channel on
+	 * the channel of vdev on the other MAC
+	 * If STA vdev is standalone on one mac, and scc on another mac, then
+	 * allow TDLS off channel on other mac scc channel
+	 */
+	sta_vdev_id = wlan_vdev_get_id(vdev);
+	connection_count = policy_mgr_get_connection_info(psoc, info);
+	switch (connection_count) {
+	case 1:
+		return true;
+	case 2:
+		/*
+		 * Allow all the 5GHz/6GHz channels when STA is in SCC
+		 */
+		if (policy_mgr_current_concurrency_is_scc(psoc)) {
+			*ch_freq = 0;
+			return true;
+		} else if (policy_mgr_is_current_hwmode_dbs(psoc)) {
+			/*
+			 * In DBS case, allow off-channel operation on the
+			 * other mac 5GHz/6GHz channel where the STA is not
+			 * present
+			 * Don't consider SBS case since STA should be
+			 * connected in 2.4GHz channel for TDLS
+			 * off-channel and MCC on SBS ex. 3 PORT
+			 * 2.4GHz STA + 5GHz Lower MCC + 5GHz Upper will
+			 * not be allowed
+			 */
+			if (sta_vdev_id == info[0].vdev_id)
+				*ch_freq = info[1].ch_freq;
+			else
+				*ch_freq = info[0].ch_freq;
+
+			return true;
+		}
+
+		break;
+	case 3:
+
+		/*
+		 * 3 Vdev SCC on 2.4GHz band. Allow TDLS off-channel operation
+		 * on all the 5GHz & 6GHz channels
+		 */
+		if (info[0].ch_freq == info[1].ch_freq &&
+		    info[0].ch_freq == info[2].ch_freq) {
+			*ch_freq = 0;
+			return true;
+		}
+
+		/*
+		 * DBS with SCC on one vdev scenario. Allow TDLS off-channel
+		 * on other mac frequency where STA is not present
+		 * SBS case is not considered since STA should be connected
+		 * on 2.4GHz and TDLS off-channel on SBS MCC is not allowed
+		 */
+		for (i = 0; i < connection_count; i++) {
+			for (j = i + 1; j < connection_count; j++) {
+				/*
+				 * Find 2 vdevs such that STA is one of the vdev
+				 * and STA + other vdev are not on same mac.
+				 * Return the foreign vdev frequency which is
+				 * not on same mac along with STA
+				 */
+				if (!policy_mgr_2_freq_always_on_same_mac(
+							psoc, info[i].ch_freq,
+							info[j].ch_freq)) {
+					if (sta_vdev_id == info[i].vdev_id) {
+						*ch_freq = info[j].ch_freq;
+						return true;
+					} else if (sta_vdev_id ==
+						   info[j].vdev_id) {
+						*ch_freq = info[j].ch_freq;
+						return true;
+					}
+				}
+			}
+		}
+
+		return false;
+	default:
+		policy_mgr_debug("TDLS off channel not allowed on > 3 port conc");
+		break;
+	}
+
+	return false;
+}
+#endif

components/tdls/core/src/wlan_tdls_ct.c

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2017-2021 The Linux Foundation. All rights reserved.
- * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -28,6 +28,7 @@
 #include "wlan_tdls_ct.h"
 #include "wlan_tdls_cmds_process.h"
 #include "wlan_reg_services_api.h"
+#include "wlan_policy_mgr_api.h"
 
 bool tdls_is_vdev_authenticated(struct wlan_objmgr_vdev *vdev)
 {
@@ -1044,11 +1045,117 @@ int tdls_set_tdls_secoffchanneloffset(struct tdls_soc_priv_obj *tdls_soc,
 	return 0;
 }
 
+static inline void
+tdls_update_opclass(struct wlan_objmgr_psoc *psoc,
+		    struct tdls_channel_switch_params *params)
+{
+	params->oper_class = tdls_find_opclass(psoc, params->tdls_off_ch,
+					       params->tdls_off_ch_bw_offset);
+	if (params->oper_class)
+		return;
+
+	if (params->tdls_off_ch_bw_offset == BW40_HIGH_PRIMARY)
+		params->oper_class = tdls_find_opclass(psoc,
+						       params->tdls_off_ch,
+						       BW40_LOW_PRIMARY);
+	else if (params->tdls_off_ch_bw_offset == BW40_LOW_PRIMARY)
+		params->oper_class = tdls_find_opclass(psoc,
+						       params->tdls_off_ch,
+						       BW40_HIGH_PRIMARY);
+}
+
+#ifdef WLAN_FEATURE_TDLS_CONCURRENCIES
+static inline QDF_STATUS
+tdls_update_peer_off_channel_list(struct wlan_objmgr_pdev *pdev,
+				  struct tdls_soc_priv_obj *tdls_soc,
+				  struct wlan_objmgr_vdev *vdev,
+				  struct tdls_peer *peer,
+				  struct tdls_channel_switch_params *params)
+{
+	struct wlan_objmgr_psoc *psoc = wlan_pdev_get_psoc(pdev);
+	struct tdls_peer_update_state *peer_info;
+	struct tdls_ch_params *off_channels = params->allowed_off_channels;
+	uint16_t i;
+	qdf_freq_t freq, peer_freq;
+
+	if (!wlan_psoc_nif_fw_ext2_cap_get(psoc,
+					   WLAN_TDLS_CONCURRENCIES_SUPPORT))
+		return false;
+
+	if (!policy_mgr_get_allowed_tdls_offchannel_freq(psoc, vdev, &freq)) {
+		tdls_debug("off channel not allowed for current concurrency");
+		return false;
+	}
+
+	/*
+	 * Overwrite the preferred off channel freq in case of concurrency
+	 */
+	if (freq) {
+		params->tdls_off_ch = wlan_reg_freq_to_chan(pdev, freq);
+		params->tdls_off_chan_freq = freq;
+
+		/*
+		 * tdls_off_ch_bw_offset is already filled in the caller
+		 */
+		if (tdls_soc->tdls_off_channel &&
+		    tdls_soc->tdls_channel_offset != BW_INVALID) {
+			tdls_update_opclass(psoc, params);
+		} else if (peer->off_channel_capable &&
+			   peer->pref_off_chan_freq) {
+			params->oper_class =
+				tdls_get_opclass_from_bandwidth(
+					vdev, params->tdls_off_chan_freq,
+					peer->pref_off_chan_width,
+					&params->tdls_off_ch_bw_offset);
+		}
+	}
+
+	peer_info = qdf_mem_malloc(sizeof(*peer_info));
+	if (!peer_info)
+		return QDF_STATUS_E_NOMEM;
+
+	tdls_extract_peer_state_param(peer_info, peer);
+	params->num_off_channels = 0;
+
+	/*
+	 * If TDLS concurrency is supported and freq == 0,
+	 * then allow all the 5GHz and 6GHz peer supported frequencies for
+	 * off-channel operation. If particular frequency is provided based on
+	 * concurrency combination then only allow that channel for off-channel.
+	 */
+	for (i = 0; i < peer_info->peer_cap.peer_chanlen; i++) {
+		peer_freq = peer_info->peer_cap.peer_chan[i].ch_freq;
+		if ((!freq || freq == peer_freq) &&
+		    (!wlan_reg_is_24ghz_ch_freq(peer_freq) ||
+		     (wlan_reg_is_6ghz_chan_freq(peer_freq) &&
+		      tdls_is_6g_freq_allowed(vdev, peer_freq)))) {
+			off_channels[i] = peer_info->peer_cap.peer_chan[i];
+			params->num_off_channels++;
+		}
+	}
+	tdls_debug("Num allowed off channels:%d freq:%u",
+		   params->num_off_channels, freq);
+	qdf_mem_free(peer_info);
+
+	return QDF_STATUS_SUCCESS;
+}
+#else
+static inline QDF_STATUS
+tdls_update_peer_off_channel_list(struct wlan_objmgr_pdev *pdev,
+				  struct tdls_soc_priv_obj *tdls_soc,
+				  struct wlan_objmgr_vdev *vdev,
+				  struct tdls_peer *peer,
+				  struct tdls_channel_switch_params *params)
+{
+	return QDF_STATUS_SUCCESS;
+}
+#endif
+
 int tdls_set_tdls_offchannelmode(struct wlan_objmgr_vdev *vdev,
 				 int offchanmode)
 {
 	struct tdls_peer *conn_peer = NULL;
-	struct tdls_channel_switch_params chan_switch_params = {0};
+	struct tdls_channel_switch_params *chan_switch_params;
 	QDF_STATUS status = QDF_STATUS_E_FAILURE;
 	int ret_value = 0;
 	struct tdls_vdev_priv_obj *tdls_vdev;
@@ -1063,7 +1170,7 @@ int tdls_set_tdls_offchannelmode(struct wlan_objmgr_vdev *vdev,
 
 
 	if (offchanmode < ENABLE_CHANSWITCH ||
-			offchanmode > DISABLE_CHANSWITCH) {
+	    offchanmode > DISABLE_ACTIVE_CHANSWITCH) {
 		tdls_err("Invalid tdls off channel mode %d", offchanmode);
 		return -EINVAL;
 	}
@@ -1091,103 +1198,92 @@ int tdls_set_tdls_offchannelmode(struct wlan_objmgr_vdev *vdev,
 		   offchanmode, tdls_soc->tdls_off_channel,
 		   tdls_soc->tdls_channel_offset);
 
+	chan_switch_params = qdf_mem_malloc(sizeof(*chan_switch_params));
+	if (!chan_switch_params)
+		return -ENOMEM;
+
 	switch (offchanmode) {
 	case ENABLE_CHANSWITCH:
 		if (tdls_soc->tdls_off_channel &&
-			tdls_soc->tdls_channel_offset != BW_INVALID) {
-			chan_switch_params.tdls_off_ch =
-				tdls_soc->tdls_off_channel;
-			chan_switch_params.tdls_off_ch_bw_offset =
-				tdls_soc->tdls_channel_offset;
-			chan_switch_params.oper_class =
-			   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);
-			}
+		    tdls_soc->tdls_channel_offset != BW_INVALID) {
+			chan_switch_params->tdls_off_ch =
+					tdls_soc->tdls_off_channel;
+			chan_switch_params->tdls_off_ch_bw_offset =
+					tdls_soc->tdls_channel_offset;
+			tdls_update_opclass(wlan_pdev_get_psoc(pdev),
+					    chan_switch_params);
 		} else if (conn_peer->off_channel_capable &&
 			   conn_peer->pref_off_chan_freq) {
-			chan_switch_params.tdls_off_ch =
+			chan_switch_params->tdls_off_ch =
 				wlan_reg_freq_to_chan(pdev,
 						 conn_peer->pref_off_chan_freq);
-			chan_switch_params.oper_class =
+			chan_switch_params->oper_class =
 				tdls_get_opclass_from_bandwidth(
 				vdev, conn_peer->pref_off_chan_freq,
 				conn_peer->pref_off_chan_width,
-				&chan_switch_params.tdls_off_ch_bw_offset);
-			chan_switch_params.tdls_off_chan_freq =
+				&chan_switch_params->tdls_off_ch_bw_offset);
+			chan_switch_params->tdls_off_chan_freq =
 						 conn_peer->pref_off_chan_freq;
 		} else {
 			tdls_err("TDLS off-channel parameters are not set yet!!!");
+			qdf_mem_free(chan_switch_params);
 			return -EINVAL;
 
 		}
+
+		/*
+		 * Retain the connected peer preferred off-channel frequency
+		 * and opclass that was calculated during update peer caps and
+		 * don't overwrite it based on concurrency in
+		 * tdls_update_peer_off_channel_list().
+		 */
+		conn_peer->pref_off_chan_freq =
+			wlan_reg_chan_opclass_to_freq(
+					chan_switch_params->tdls_off_ch,
+					chan_switch_params->oper_class, false);
+		conn_peer->op_class_for_pref_off_chan =
+				chan_switch_params->oper_class;
+
+		tdls_update_peer_off_channel_list(pdev, tdls_soc, vdev,
+						  conn_peer,
+						  chan_switch_params);
 		break;
 	case DISABLE_CHANSWITCH:
-		chan_switch_params.tdls_off_ch = 0;
-		chan_switch_params.tdls_off_ch_bw_offset = 0;
-		chan_switch_params.oper_class = 0;
+	case DISABLE_ACTIVE_CHANSWITCH:
+		chan_switch_params->tdls_off_ch = 0;
+		chan_switch_params->tdls_off_ch_bw_offset = 0;
+		chan_switch_params->oper_class = 0;
 		break;
 	default:
 		tdls_err("Incorrect Parameters mode: %d tdls_off_channel: %d offchanoffset: %d",
-			offchanmode, tdls_soc->tdls_off_channel,
-			tdls_soc->tdls_channel_offset);
+			 offchanmode, tdls_soc->tdls_off_channel,
+			 tdls_soc->tdls_channel_offset);
+		qdf_mem_free(chan_switch_params);
 		return -EINVAL;
 	} /* end switch */
 
-	chan_switch_params.vdev_id = tdls_vdev->session_id;
-	chan_switch_params.tdls_sw_mode = offchanmode;
-	chan_switch_params.is_responder =
-		conn_peer->is_responder;
-	qdf_mem_copy(&chan_switch_params.peer_mac_addr,
-		     &conn_peer->peer_mac.bytes,
-		     QDF_MAC_ADDR_SIZE);
+	chan_switch_params->vdev_id = tdls_vdev->session_id;
+	chan_switch_params->tdls_sw_mode = offchanmode;
+	chan_switch_params->is_responder = conn_peer->is_responder;
+	qdf_mem_copy(&chan_switch_params->peer_mac_addr,
+		     &conn_peer->peer_mac.bytes, QDF_MAC_ADDR_SIZE);
 	tdls_notice("Peer " QDF_MAC_ADDR_FMT " vdevId: %d, off channel: %d, offset: %d, mode: %d, is_responder: %d",
-		 QDF_MAC_ADDR_REF(chan_switch_params.peer_mac_addr),
-		 chan_switch_params.vdev_id,
-		 chan_switch_params.tdls_off_ch,
-		 chan_switch_params.tdls_off_ch_bw_offset,
-		 chan_switch_params.tdls_sw_mode,
-		 chan_switch_params.is_responder);
-
-	status = tdls_set_offchan_mode(tdls_soc->soc,
-				       &chan_switch_params);
-
-	if (status != QDF_STATUS_SUCCESS) {
+		    QDF_MAC_ADDR_REF(chan_switch_params->peer_mac_addr),
+		    chan_switch_params->vdev_id,
+		    chan_switch_params->tdls_off_ch,
+		    chan_switch_params->tdls_off_ch_bw_offset,
+		    chan_switch_params->tdls_sw_mode,
+		    chan_switch_params->is_responder);
+
+	status = tdls_set_offchan_mode(tdls_soc->soc, chan_switch_params);
+	if (QDF_IS_STATUS_ERROR(status)) {
+		qdf_mem_free(chan_switch_params);
 		tdls_err("Failed to send channel switch request to wmi");
 		return -EINVAL;
 	}
 
 	tdls_soc->tdls_fw_off_chan_mode = offchanmode;
-
-	if (ENABLE_CHANSWITCH == offchanmode) {
-		conn_peer = tdls_find_first_connected_peer(tdls_vdev);
-		if (!conn_peer) {
-			tdls_err("No TDLS Connected Peer");
-			return -EPERM;
-		}
-		conn_peer->pref_off_chan_freq = wlan_reg_chan_opclass_to_freq(
-						 chan_switch_params.tdls_off_ch,
-						 chan_switch_params.oper_class,
-						 false);
-		conn_peer->op_class_for_pref_off_chan =
-			chan_switch_params.oper_class;
-	}
+	qdf_mem_free(chan_switch_params);
 
 	return ret_value;
 }
@@ -1318,8 +1414,7 @@ void tdls_disable_offchan_and_teardown_links(
 	/* Send Msg to PE for deleting all the TDLS peers */
 	tdls_delete_all_tdls_peers(vdev, tdls_soc);
 
-	for (staidx = 0; staidx < tdls_soc->max_num_tdls_sta;
-							staidx++) {
+	for (staidx = 0; staidx < tdls_soc->max_num_tdls_sta; staidx++) {
 		if (!tdls_soc->tdls_conn_info[staidx].valid_entry)
 			continue;
 
@@ -1332,8 +1427,7 @@ void tdls_disable_offchan_and_teardown_links(
 			    QDF_MAC_ADDR_REF(curr_peer->peer_mac.bytes));
 
 		/* Indicate teardown to supplicant */
-		tdls_indicate_teardown(tdls_vdev,
-				       curr_peer,
+		tdls_indicate_teardown(tdls_vdev, curr_peer,
 				       TDLS_TEARDOWN_PEER_UNSPEC_REASON);
 
 		/*

components/tdls/dispatcher/inc/wlan_tdls_public_structs.h

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2017-2021 The Linux Foundation. All rights reserved.
- * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -45,8 +45,11 @@
 #define WLAN_MAX_SUPP_OPER_CLASSES                   32
 #define WLAN_MAC_MAX_SUPP_RATES                      32
 #define WLAN_CHANNEL_14                              14
+
 #define ENABLE_CHANSWITCH                            1
 #define DISABLE_CHANSWITCH                           2
+#define DISABLE_ACTIVE_CHANSWITCH                    3
+
 #define WLAN_TDLS_PREFERRED_OFF_CHANNEL_NUM_MIN      1
 #define WLAN_TDLS_PREFERRED_OFF_CHANNEL_NUM_MAX      165
 #define WLAN_TDLS_PREFERRED_OFF_CHANNEL_NUM_DEF      36
@@ -1008,6 +1011,8 @@ struct tdls_peer_update_state {
  * @oper_class: Operating class for target channel
  * @is_responder: Responder or initiator
  * @tdls_off_chan_freq: Target Off Channel frequency
+ * @num_off_channels: Number of channels allowed for off channel operation
+ * @allowed_off_channels: Channel list allowed for off channels
  */
 struct tdls_channel_switch_params {
 	uint32_t    vdev_id;
@@ -1018,6 +1023,8 @@ struct tdls_channel_switch_params {
 	uint8_t     oper_class;
 	uint8_t     is_responder;
 	uint32_t    tdls_off_chan_freq;
+	uint16_t    num_off_channels;
+	struct tdls_ch_params allowed_off_channels[WLAN_MAC_WMI_MAX_SUPP_CHANNELS];
 };
 
 /**