qcacld-3.0: Add SAP csa reason

Currently, there is no logging for channel switch reason.
Add csa_reason to know the reason for the channel switch.

Change-Id: Iec02d7fa2b1ec51acb97005da220db7de705d7e0
CRs-Fixed: 2483206

components/cmn_services/policy_mgr/inc/wlan_policy_mgr_api.h

@@ -1223,6 +1223,7 @@ struct policy_mgr_sme_cbacks {
  * encryption type.
  * @hdd_is_chan_switch_in_progress: Check if in any adater channel switch is in
  * progress
+ * @wlan_hdd_set_sap_csa_reason: Set the sap csa reason in cases like NAN.
  */
 struct policy_mgr_hdd_cbacks {
 	void (*sap_restart_chan_switch_cb)(struct wlan_objmgr_psoc *psoc,
@@ -1239,6 +1240,8 @@ struct policy_mgr_hdd_cbacks {
 	enum QDF_OPMODE (*hdd_get_device_mode)(uint32_t session_id);
 	bool (*hdd_wapi_security_sta_exist)(void);
 	bool (*hdd_is_chan_switch_in_progress)(void);
+	void (*wlan_hdd_set_sap_csa_reason)(struct wlan_objmgr_psoc *psoc,
+					    uint8_t vdev_id, uint8_t reason);
 };
 
 

components/cmn_services/policy_mgr/src/wlan_policy_mgr_action.c

@@ -34,6 +34,7 @@
 #include "qdf_platform.h"
 #include "wlan_nan_api.h"
 #include "nan_ucfg_api.h"
+#include "sap_api.h"
 
 enum policy_mgr_conc_next_action (*policy_mgr_get_current_pref_hw_mode_ptr)
 	(struct wlan_objmgr_psoc *psoc);
@@ -1555,6 +1556,11 @@ void policy_mgr_nan_sap_post_enable_conc_check(struct wlan_objmgr_psoc *psoc)
 
 	policy_mgr_debug("Force SCC for NAN+SAP Ch: %d",
 			 WLAN_REG_IS_5GHZ_CH(sap_ch) ? nan_ch_5g : nan_ch_2g);
+	if (pm_ctx->hdd_cbacks.wlan_hdd_set_sap_csa_reason)
+		pm_ctx->hdd_cbacks.wlan_hdd_set_sap_csa_reason(psoc,
+					sap_info->vdev_id,
+					CSA_REASON_CONCURRENT_NAN_EVENT);
+
 	if (WLAN_REG_IS_5GHZ_CH(sap_ch)) {
 		policy_mgr_change_sap_channel_with_csa(psoc, sap_info->vdev_id,
 						       nan_ch_5g,
@@ -1608,6 +1614,11 @@ void policy_mgr_nan_sap_post_disable_conc_check(struct wlan_objmgr_psoc *psoc)
 			policy_mgr_err("wait for event failed, still continue with channel switch");
 	}
 
+	if (pm_ctx->hdd_cbacks.wlan_hdd_set_sap_csa_reason)
+		pm_ctx->hdd_cbacks.wlan_hdd_set_sap_csa_reason(psoc,
+					sap_info->vdev_id,
+					CSA_REASON_CONCURRENT_NAN_EVENT);
+
 	policy_mgr_change_sap_channel_with_csa(psoc, sap_info->vdev_id,
 					       sap_ch,
 					       policy_mgr_get_ch_width(

core/hdd/src/wlan_hdd_cfg80211.c

@@ -9960,6 +9960,8 @@ static int hdd_update_acs_channel(struct hdd_adapter *adapter, uint8_t reason,
 		sap_config->acs_cfg.ch_width = channel_list->chan_width;
 		hdd_ap_ctx->sap_config.ch_width_orig =
 				channel_list->chan_width;
+		wlan_hdd_set_sap_csa_reason(hdd_ctx->psoc, adapter->vdev_id,
+					    CSA_REASON_LTE_COEX);
 		hdd_switch_sap_channel(adapter, sap_config->acs_cfg.pri_ch,
 				       true);
 		break;
@@ -16252,6 +16254,9 @@ bool wlan_hdd_handle_sap_sta_dfs_conc(struct hdd_adapter *adapter,
 
 	hostapd_state = WLAN_HDD_GET_HOSTAP_STATE_PTR(ap_adapter);
 	qdf_event_reset(&hostapd_state->qdf_event);
+	wlan_hdd_set_sap_csa_reason(hdd_ctx->psoc, ap_adapter->vdev_id,
+				    CSA_REASON_STA_CONNECT_DFS_TO_NON_DFS);
+
 	status = wlansap_set_channel_change_with_csa(
 			WLAN_HDD_GET_SAP_CTX_PTR(ap_adapter), channel,
 			hdd_ap_ctx->sap_config.ch_width_orig, false);
@@ -21106,6 +21111,8 @@ static int __wlan_hdd_cfg80211_channel_switch(struct wiphy *wiphy,
 	if ((QDF_P2P_GO_MODE != adapter->device_mode) &&
 		(QDF_SAP_MODE != adapter->device_mode))
 		return -ENOTSUPP;
+	wlan_hdd_set_sap_csa_reason(hdd_ctx->psoc, adapter->vdev_id,
+				    CSA_REASON_USER_INITIATED);
 
 	freq = csa_params->chandef.chan->center_freq;
 	channel = cds_freq_to_chan(freq);

core/hdd/src/wlan_hdd_hostapd.c

@@ -1140,6 +1140,9 @@ static void __wlan_hdd_sap_pre_cac_success(struct hdd_adapter *adapter)
 	 * switch to the pre CAC DFS channel, there is no CAC again.
 	 */
 	wlan_hdd_set_pre_cac_complete_status(ap_adapter, true);
+
+	wlan_hdd_set_sap_csa_reason(hdd_ctx->psoc, ap_adapter->vdev_id,
+				    CSA_REASON_PRE_CAC_SUCCESS);
 	i = hdd_softap_set_channel_change(ap_adapter->dev,
 			ap_adapter->pre_cac_chan,
 			CH_WIDTH_MAX, false);
@@ -2591,6 +2594,8 @@ QDF_STATUS hdd_hostapd_sap_event_cb(struct sap_event *sap_event,
 	case eSAP_ECSA_CHANGE_CHAN_IND:
 		hdd_debug("Channel change indication from peer for channel %d",
 			  sap_event->sapevt.sap_chan_cng_ind.new_chan);
+		wlan_hdd_set_sap_csa_reason(hdd_ctx->psoc, adapter->vdev_id,
+					    CSA_REASON_PEER_ACTION_FRAME);
 		if (hdd_softap_set_channel_change(dev,
 			 sap_event->sapevt.sap_chan_cng_ind.new_chan,
 			 CH_WIDTH_MAX, false))
@@ -3072,6 +3077,20 @@ void hdd_sap_restart_chan_switch_cb(struct wlan_objmgr_psoc *psoc,
 					    channel_bw, forced);
 }
 
+void wlan_hdd_set_sap_csa_reason(struct wlan_objmgr_psoc *psoc, uint8_t vdev_id,
+				 uint8_t reason)
+{
+	struct sap_context *sap_ctx;
+	struct hdd_adapter *ap_adapter = wlan_hdd_get_adapter_from_vdev(
+				psoc, vdev_id);
+	if (!ap_adapter) {
+		hdd_err("ap adapter is NULL");
+		return;
+	}
+	sap_ctx = WLAN_HDD_GET_SAP_CTX_PTR(ap_adapter);
+	sap_ctx->csa_reason = reason;
+}
+
 QDF_STATUS wlan_hdd_get_channel_for_sap_restart(
 				struct wlan_objmgr_psoc *psoc,
 				uint8_t vdev_id, uint8_t *channel,
@@ -3170,6 +3189,8 @@ sap_restart:
 		 hdd_ap_ctx->sap_config.channel, intf_ch);
 	ch_params.ch_width = CH_WIDTH_MAX;
 	hdd_ap_ctx->bss_stop_reason = BSS_STOP_DUE_TO_MCC_SCC_SWITCH;
+	hdd_ap_ctx->sap_context->csa_reason =
+			CSA_REASON_CONCURRENT_STA_CHANGED_CHANNEL;
 
 	wlan_reg_set_channel_params(hdd_ctx->pdev,
 				    intf_ch,

core/hdd/src/wlan_hdd_hostapd.h

@@ -89,6 +89,20 @@ QDF_STATUS wlan_hdd_get_channel_for_sap_restart(
 				uint8_t *sec_ch);
 #endif
 
+/**
+ * wlan_hdd_set_sap_csa_reason() - Function to set
+ * sap csa reason
+ * @psoc: PSOC object information
+ * @vdev_id: vdev id
+ * @reason: reason to be updated
+ *
+ * This function sets the reason for SAP channel switch
+ *
+ * Return: None
+ *
+ */
+void wlan_hdd_set_sap_csa_reason(struct wlan_objmgr_psoc *psoc, uint8_t vdev_id,
+				 uint8_t reason);
 eCsrEncryptionType
 hdd_translate_rsn_to_csr_encryption_type(uint8_t cipher_suite[4]);
 

core/hdd/src/wlan_hdd_hostapd_wext.c

@@ -466,6 +466,9 @@ static __iw_softap_setparam(struct net_device *dev,
 	case QCSAP_PARAM_SET_CHANNEL_CHANGE:
 		if ((QDF_SAP_MODE == adapter->device_mode) ||
 		   (QDF_P2P_GO_MODE == adapter->device_mode)) {
+			wlan_hdd_set_sap_csa_reason(hdd_ctx->psoc,
+						    adapter->vdev_id,
+						    CSA_REASON_USER_INITIATED);
 			hdd_debug("SET Channel Change to new channel= %d",
 			       set_value);
 			ret = hdd_softap_set_channel_change(dev, set_value,

core/hdd/src/wlan_hdd_ioctl.c

@@ -7015,6 +7015,8 @@ static int drv_cmd_set_channel_switch(struct hdd_adapter *adapter,
 
 	hdd_debug("CH:%d BW:%d", chan_number, chan_bw);
 
+	wlan_hdd_set_sap_csa_reason(hdd_ctx->psoc, adapter->vdev_id,
+				    CSA_REASON_USER_INITIATED);
 	status = hdd_softap_set_channel_change(dev, chan_number, width, true);
 	if (status) {
 		hdd_err("Set channel change fail");

core/hdd/src/wlan_hdd_main.c

@@ -2735,6 +2735,8 @@ static void hdd_register_policy_manager_callback(
 		hdd_wapi_security_sta_exist;
 	hdd_cbacks.hdd_is_chan_switch_in_progress =
 				hdd_is_chan_switch_in_progress;
+	hdd_cbacks.wlan_hdd_set_sap_csa_reason =
+				wlan_hdd_set_sap_csa_reason;
 
 	if (QDF_STATUS_SUCCESS !=
 	    policy_mgr_register_hdd_cb(psoc, &hdd_cbacks)) {
@@ -8840,9 +8842,13 @@ void hdd_unsafe_channel_restart_sap(struct hdd_context *hdd_ctxt)
 			hdd_ctxt->acs_policy.acs_channel = AUTO_CHANNEL_SELECT;
 			ucfg_mlme_get_sap_internal_restart(hdd_ctxt->psoc,
 							   &value);
-			if (value)
+			if (value) {
+				wlan_hdd_set_sap_csa_reason(hdd_ctxt->psoc,
+						adapter->vdev_id,
+						CSA_REASON_UNSAFE_CHANNEL);
 				hdd_switch_sap_channel(adapter, restart_chan,
 						       true);
+			}
 			else {
 				hdd_debug("sending coex indication");
 				wlan_hdd_send_svc_nlink_msg(
@@ -8912,6 +8918,8 @@ static void hdd_lte_coex_restart_sap(struct hdd_adapter *adapter,
 
 	wlan_hdd_send_svc_nlink_msg(hdd_ctx->radio_index,
 				    WLAN_SVC_LTE_COEX_IND, NULL, 0);
+	wlan_hdd_set_sap_csa_reason(hdd_ctx->psoc, adapter->vdev_id,
+				    CSA_REASON_LTE_COEX);
 	hdd_switch_sap_channel(adapter, restart_chan, true);
 }
 
@@ -15078,7 +15086,8 @@ void hdd_check_and_restart_sap_with_non_dfs_acs(void)
 		if (!restart_chan ||
 		    wlan_reg_is_dfs_ch(hdd_ctx->pdev, restart_chan))
 			restart_chan = SAP_DEFAULT_5GHZ_CHANNEL;
-
+		wlan_hdd_set_sap_csa_reason(hdd_ctx->psoc, ap_adapter->vdev_id,
+					CSA_REASON_STA_CONNECT_DFS_TO_NON_DFS);
 		hdd_switch_sap_channel(ap_adapter, restart_chan, true);
 	}
 }

core/sap/inc/sap_api.h

@@ -466,6 +466,31 @@ enum  sap_acs_dfs_mode {
 	ACS_DFS_MODE_DEPRIORITIZE
 };
 
+/**
+ * enum sap_csa_reason_code - SAP channel switch reason code
+ * @CSA_REASON_UNKNOWN: Unknown reason
+ * @CSA_REASON_STA_CONNECT_DFS_TO_NON_DFS: STA connection from DFS to NON DFS.
+ * @CSA_REASON_USER_INITIATED: User initiated form north bound.
+ * @CSA_REASON_PEER_ACTION_FRAME: Action frame received on sta iface.
+ * @CSA_REASON_PRE_CAC_SUCCESS: Pre CAC success.
+ * @CSA_REASON_CONCURRENT_STA_CHANGED_CHANNEL: concurrent sta changed channel.
+ * @CSA_REASON_UNSAFE_CHANNEL: Unsafe channel.
+ * @CSA_REASON_LTE_COEX: LTE coex.
+ * @CSA_REASON_CONCURRENT_NAN_EVENT: NAN concurrency.
+ *
+ */
+enum sap_csa_reason_code {
+	CSA_REASON_UNKNOWN,
+	CSA_REASON_STA_CONNECT_DFS_TO_NON_DFS,
+	CSA_REASON_USER_INITIATED,
+	CSA_REASON_PEER_ACTION_FRAME,
+	CSA_REASON_PRE_CAC_SUCCESS,
+	CSA_REASON_CONCURRENT_STA_CHANGED_CHANNEL,
+	CSA_REASON_UNSAFE_CHANNEL,
+	CSA_REASON_LTE_COEX,
+	CSA_REASON_CONCURRENT_NAN_EVENT
+};
+
 struct sap_config {
 	tSap_SSIDInfo_t SSIDinfo;
 	eCsrPhyMode SapHw_mode;         /* Wireless Mode */

core/sap/src/sap_internal.h

@@ -146,6 +146,7 @@ struct sap_context {
 	 * track of state machine
 	 */
 	enum sap_fsm_state fsm_state;
+	enum sap_csa_reason_code csa_reason;
 
 	/* Actual storage for AP and self (STA) SSID */
 	tCsrSSIDInfo SSIDList[2];

core/sap/src/sap_module.c

@@ -335,6 +335,7 @@ QDF_STATUS sap_init_ctx(struct sap_context *sap_ctx,
 		sap_ctx->SSIDList[0].ssidHidden;
 
 	sap_ctx->csr_roamProfile.BSSIDs.numOfBSSIDs = 1; /* This is true for now. */
+	sap_ctx->csa_reason = CSA_REASON_UNKNOWN;
 	sap_ctx->csr_roamProfile.BSSIDs.bssid = &sap_ctx->bssid;
 	sap_ctx->csr_roamProfile.csrPersona = mode;
 	qdf_mem_copy(sap_ctx->self_mac_addr, addr, QDF_MAC_ADDR_SIZE);
@@ -1328,6 +1329,38 @@ static inline void sap_start_csa_restart(struct mac_context *mac,
 	sme_csa_restart(mac, sap_ctx->sessionId);
 }
 
+/**
+ * sap_get_csa_reason_str() - Get csa reason in string
+ * @reason: sap reason enum value
+ *
+ * Return: string reason
+ */
+static char *sap_get_csa_reason_str(enum sap_csa_reason_code reason)
+{
+	switch (reason) {
+	case CSA_REASON_UNKNOWN:
+		return "UNKNOWN";
+	case CSA_REASON_STA_CONNECT_DFS_TO_NON_DFS:
+		return "STA_CONNECT_DFS_TO_NON_DFS";
+	case CSA_REASON_USER_INITIATED:
+		return "USER_INITIATED";
+	case CSA_REASON_PEER_ACTION_FRAME:
+		return "PEER_ACTION_FRAME";
+	case CSA_REASON_PRE_CAC_SUCCESS:
+		return "PRE_CAC_SUCCESS";
+	case CSA_REASON_CONCURRENT_STA_CHANGED_CHANNEL:
+		return "CONCURRENT_STA_CHANGED_CHANNEL";
+	case CSA_REASON_UNSAFE_CHANNEL:
+		return "UNSAFE_CHANNEL";
+	case CSA_REASON_LTE_COEX:
+		return "LTE_COEX";
+	case CSA_REASON_CONCURRENT_NAN_EVENT:
+		return "CONCURRENT_NAN_EVENT";
+	default:
+		return "UNKNOWN";
+	}
+}
+
 /**
  * wlansap_set_channel_change_with_csa() - Set channel change with CSA
  * @sap_ctx: Pointer to SAP context
@@ -1373,10 +1406,12 @@ QDF_STATUS wlansap_set_channel_change_with_csa(struct sap_context *sap_ctx,
 		return QDF_STATUS_E_FAULT;
 	}
 	QDF_TRACE(QDF_MODULE_ID_SAP, QDF_TRACE_LEVEL_INFO,
-		"%s: sap chan:%d target:%d conn on 5GHz:%d",
+		"%s: sap chan:%d target:%d conn on 5GHz:%d, csa_reason:%s(%d)",
 		__func__, sap_ctx->channel, targetChannel,
 		policy_mgr_is_any_mode_active_on_band_along_with_session(
-			mac->psoc, sap_ctx->sessionId, POLICY_MGR_BAND_5));
+			mac->psoc, sap_ctx->sessionId, POLICY_MGR_BAND_5),
+			sap_get_csa_reason_str(sap_ctx->csa_reason),
+			sap_ctx->csa_reason);
 
 	sta_sap_scc_on_dfs_chan =
 		policy_mgr_is_sta_sap_scc_allowed_on_dfs_chan(mac->psoc);