qcacld-3.0: Handle CONFIG_BTM_SUPPORT vendor cmd

Add support to process newly added vendor command
QCA_WLAN_VENDOR_ATTR_CONFIG_BTM_SUPPORT.

User space use this vendor command to disable/enable
BTM roaming for STA interface.

If host receives this vendor command in connected
state, host should return failure to user space.

Change-Id: Iafadc2fab2ee30a0eb2e8e7ebb7178c1d36fe1c9
CRs-Fixed: 3715920

components/umac/mlme/connection_mgr/dispatcher/inc/wlan_cm_roam_api.h

@@ -888,6 +888,17 @@ QDF_STATUS wlan_cm_set_roam_band_bitmask(struct wlan_objmgr_psoc *psoc,
 					 uint8_t vdev_id,
 					 uint32_t roam_band_bitmask);
 
+/**
+ * wlan_cm_set_btm_config() - Set btm roaming disable flag for vdev
+ * @psoc: psoc pointer
+ * @vdev_id: vdev id
+ * @is_disable_btm: to check whether btm roaming is disabled or not
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS wlan_cm_set_btm_config(struct wlan_objmgr_psoc *psoc,
+				  uint8_t vdev_id, bool is_disable_btm);
+
 #ifdef FEATURE_RX_LINKSPEED_ROAM_TRIGGER
 /**
  * struct roam_link_speed_cfg - link speed state config
@@ -1506,6 +1517,13 @@ wlan_cm_set_roam_band_bitmask(struct wlan_objmgr_psoc *psoc, uint8_t vdev_id,
 	return QDF_STATUS_E_NOSUPPORT;
 }
 
+static inline QDF_STATUS wlan_cm_set_btm_config(struct wlan_objmgr_psoc *psoc,
+						uint8_t vdev_id,
+						bool is_disable_btm)
+{
+	return QDF_STATUS_SUCCESS;
+}
+
 static inline
 uint32_t wlan_cm_get_roam_scan_scheme_bitmap(struct wlan_objmgr_psoc *psoc,
 					     uint8_t vdev_id)

components/umac/mlme/connection_mgr/dispatcher/inc/wlan_cm_roam_public_struct.h

@@ -600,6 +600,7 @@ struct sae_roam_auth_map {
  * @tried_candidate_freq_list: freq list on which connection tried
  * @rso_rsn_caps: rsn caps with global user MFP which can be used for
  *                cross-AKM roaming
+ * @is_disable_btm: btm roaming disabled or not from userspace
  */
 struct rso_config {
 #ifdef WLAN_FEATURE_HOST_ROAM
@@ -654,6 +655,7 @@ struct rso_config {
 	bool is_forced_roaming;
 	struct wlan_chan_list tried_candidate_freq_list;
 	uint16_t rso_rsn_caps;
+	bool is_disable_btm;
 };
 
 /**
@@ -768,6 +770,7 @@ struct rso_config_params {
  * @ROAM_BAND: Allowed band for roaming in FW
  * @HI_RSSI_SCAN_RSSI_DELTA:
  * @ROAM_RSSI_DIFF_6GHZ: roam rssi diff for 6 GHz AP
+ * @IS_DISABLE_BTM: disable btm roaming
  */
 enum roam_cfg_param {
 	RSSI_CHANGE_THRESHOLD,
@@ -799,6 +802,7 @@ enum roam_cfg_param {
 	ROAM_BAND,
 	HI_RSSI_SCAN_RSSI_DELTA,
 	ROAM_RSSI_DIFF_6GHZ,
+	IS_DISABLE_BTM,
 };
 
 /**

components/umac/mlme/connection_mgr/dispatcher/inc/wlan_cm_roam_ucfg_api.h

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
- * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2024 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 above
@@ -181,6 +181,21 @@ ucfg_cm_set_roam_band_mask(struct wlan_objmgr_psoc *psoc, uint8_t vdev_id,
 	return wlan_cm_set_roam_band_bitmask(psoc, vdev_id, roam_band_mask);
 }
 
+/**
+ * ucfg_cm_set_btm_config() - Inline ucfg api to set btm roaming disable flag
+ * @psoc: pointer to psoc object
+ * @vdev_id: vdev id
+ * @is_disable_btm: btm config flag that needs to be set from the caller
+ *
+ * Return: QDF Status
+ */
+static inline QDF_STATUS ucfg_cm_set_btm_config(struct wlan_objmgr_psoc *psoc,
+						uint8_t vdev_id,
+						bool is_disable_btm)
+{
+	return wlan_cm_set_btm_config(psoc, vdev_id, is_disable_btm);
+}
+
 static inline QDF_STATUS
 ucfg_cm_set_roam_band_update(struct wlan_objmgr_psoc *psoc, uint8_t vdev_id)
 {
@@ -223,6 +238,13 @@ ucfg_cm_set_roam_band_mask(struct wlan_objmgr_psoc *psoc, uint8_t vdev_id,
 	return QDF_STATUS_SUCCESS;
 }
 
+static inline QDF_STATUS ucfg_cm_set_btm_config(struct wlan_objmgr_psoc *psoc,
+						uint8_t vdev_id,
+						bool is_disable_btm)
+{
+	return QDF_STATUS_SUCCESS;
+}
+
 static inline QDF_STATUS
 ucfg_cm_set_roam_band_update(struct wlan_objmgr_psoc *psoc, uint8_t vdev_id)
 {

components/umac/mlme/connection_mgr/dispatcher/src/wlan_cm_roam_api.c

@@ -1298,6 +1298,9 @@ wlan_cm_roam_cfg_set_value(struct wlan_objmgr_psoc *psoc, uint8_t vdev_id,
 	case RSSI_CHANGE_THRESHOLD:
 		rso_cfg->rescan_rssi_delta  = src_config->uint_value;
 		break;
+	case IS_DISABLE_BTM:
+		rso_cfg->is_disable_btm  = src_config->bool_value;
+		break;
 	case BEACON_RSSI_WEIGHT:
 		rso_cfg->beacon_rssi_weight = src_config->uint_value;
 		break;
@@ -1623,6 +1626,7 @@ QDF_STATUS wlan_cm_rso_config_init(struct wlan_objmgr_vdev *vdev,
 
 	ucfg_reg_get_band(wlan_vdev_get_pdev(vdev), &current_band);
 	rso_cfg->roam_band_bitmask = current_band;
+	rso_cfg->is_disable_btm = false;
 
 	return status;
 }
@@ -1652,6 +1656,7 @@ void wlan_cm_rso_config_deinit(struct wlan_objmgr_vdev *vdev,
 	cm_flush_roam_channel_list(&cfg_params->pref_chan_info);
 
 	qdf_mutex_destroy(&rso_cfg->cm_rso_lock);
+	rso_cfg->is_disable_btm = false;
 
 	cm_deinit_reassoc_timer(rso_cfg);
 }
@@ -2336,6 +2341,16 @@ QDF_STATUS wlan_cm_set_roam_band_bitmask(struct wlan_objmgr_psoc *psoc,
 					  &src_config);
 }
 
+QDF_STATUS wlan_cm_set_btm_config(struct wlan_objmgr_psoc *psoc,
+				  uint8_t vdev_id, bool is_disable_btm)
+{
+	struct cm_roam_values_copy src_config = {};
+
+	src_config.bool_value = is_disable_btm;
+	return wlan_cm_roam_cfg_set_value(psoc, vdev_id, IS_DISABLE_BTM,
+					  &src_config);
+}
+
 QDF_STATUS wlan_cm_set_roam_band_update(struct wlan_objmgr_psoc *psoc,
 					uint8_t vdev_id)
 {

core/hdd/src/wlan_hdd_cfg80211.c

@@ -8645,6 +8645,7 @@ const struct nla_policy wlan_hdd_wifi_config_policy[
 		.type = NLA_U8},
 	[QCA_WLAN_VENDOR_ATTR_CONFIG_COEX_TRAFFIC_SHAPING_MODE] = {
 		.type = NLA_U8},
+	[QCA_WLAN_VENDOR_ATTR_CONFIG_BTM_SUPPORT] = {.type = NLA_U8},
 };
 
 #define WLAN_MAX_LINK_ID 15
@@ -11851,6 +11852,53 @@ hdd_test_config_emlsr_action_mode(struct hdd_adapter *adapter,
 }
 #endif
 
+/**
+ * hdd_set_btm_support_config() - Update BTM support policy
+ * @link_info: Link info pointer in HDD adapter
+ * @attr: pointer to nla attr
+ *
+ * Return: 0 on success, negative on failure
+ */
+static int hdd_set_btm_support_config(struct wlan_hdd_link_info *link_info,
+				      const struct nlattr *attr)
+{
+	uint8_t cfg_val;
+	struct hdd_adapter *adapter = link_info->adapter;
+	struct hdd_context *hdd_ctx = WLAN_HDD_GET_CTX(adapter);
+	enum QDF_OPMODE op_mode = adapter->device_mode;
+	bool is_vdev_in_conn_state, is_disable_btm;
+
+	is_vdev_in_conn_state = hdd_is_vdev_in_conn_state(link_info);
+	cfg_val = nla_get_u8(attr);
+
+	hdd_debug("vdev: %d, cfg_val: %d for op_mode: %d, conn_state:%d",
+		  link_info->vdev_id, cfg_val, op_mode,
+		  is_vdev_in_conn_state);
+
+	/*
+	 * Change in BTM support configuration is applicable only for STA
+	 * interface and not allowed in connected state.
+	 */
+	if (op_mode != QDF_STA_MODE || is_vdev_in_conn_state)
+		return -EINVAL;
+
+	switch (cfg_val) {
+	case QCA_WLAN_BTM_SUPPORT_DISABLE:
+		is_disable_btm = true;
+		break;
+	case QCA_WLAN_BTM_SUPPORT_DEFAULT:
+		is_disable_btm = false;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	ucfg_cm_set_btm_config(hdd_ctx->psoc, link_info->vdev_id,
+			       is_disable_btm);
+
+	return 0;
+}
+
 #ifdef WLAN_FEATURE_11BE
 /**
  * hdd_set_eht_emlsr_capability() - Set EMLSR capability for EHT STA
@@ -12366,6 +12414,8 @@ static const struct independent_setters independent_setters[] = {
 	 hdd_set_t2lm_negotiation_support},
 	{QCA_WLAN_VENDOR_ATTR_CONFIG_COEX_TRAFFIC_SHAPING_MODE,
 	 hdd_set_coex_traffic_shaping_mode},
+	{QCA_WLAN_VENDOR_ATTR_CONFIG_BTM_SUPPORT,
+	 hdd_set_btm_support_config},
 };
 
 #ifdef WLAN_FEATURE_ELNA