qcacld-3.0: Fix sap_dfs_wakelock not released when SAP stop

When SAP start as pri freq: 5180, 160M,  pri freq isn’t DFS freq, but
bonded freqs are DFS freq, so sap_dfs_wakelock is held.
After SAP restart as pri freq: 5180, 80M, pri freq and bonded freqs are
not DFS freq, so sap_dfs_wakelock isn’t released.

To fix it, add ch_params_before_ch_switch in sap_context, which includes
ch_width/ccfs0/ccfs1, can get all bonded sub channel info.
Add ch_params parameter in API hdd_hostapd_channel_allow_suspend and
hdd_hostapd_channel_prevent_suspend.

Call wlan_mlme_check_chan_param_has_dfs in them instead of
sap_chan_bond_dfs_sub_chan with

CRs-Fixed: 3777779
Change-Id: I7e32317b2ffab6f8de5990aeed68e7bd02527d6f

core/hdd/src/wlan_hdd_hostapd.c

@@ -364,18 +364,21 @@ hdd_hostapd_deinit_sap_session(struct wlan_hdd_link_info *link_info)
  * Called when, 1. bss stopped, 2. channel switch
  *
  * @adapter: pointer to hdd adapter
- * @chan_freq: current channel frequency
+ * @chan_freq: channel frequency
+ * @ch_params: channel params
  *
  * Return: None
  */
 static void hdd_hostapd_channel_allow_suspend(struct hdd_adapter *adapter,
-					      uint32_t chan_freq)
+					      uint32_t chan_freq,
+					      struct ch_params *ch_params)
 {
 
 	struct hdd_context *hdd_ctx = WLAN_HDD_GET_CTX(adapter);
 	struct hdd_hostapd_state *hostapd_state =
 		WLAN_HDD_GET_HOSTAP_STATE_PTR(adapter->deflink);
 	struct sap_context *sap_ctx;
+	bool is_dfs;
 
 	hdd_debug("bss_state: %d, chan_freq: %d, dfs_ref_cnt: %d",
 		  hostapd_state->bss_state, chan_freq,
@@ -391,9 +394,10 @@ static void hdd_hostapd_channel_allow_suspend(struct hdd_adapter *adapter,
 		return;
 	}
 
-	if (!sap_chan_bond_dfs_sub_chan(sap_ctx,
+	is_dfs = wlan_mlme_check_chan_param_has_dfs(hdd_ctx->pdev,
-					chan_freq,
+						    ch_params,
-					PHY_CHANNEL_BONDING_STATE_MAX))
+						    chan_freq);
+	if (!is_dfs)
 		return;
 
 	/* Release wakelock when no more DFS channels are used */
@@ -411,17 +415,20 @@ static void hdd_hostapd_channel_allow_suspend(struct hdd_adapter *adapter,
  * Called when, 1. bss started, 2. channel switch
  *
  * @adapter: pointer to hdd adapter
- * @chan_freq: current channel frequency
+ * @chan_freq: channel frequency
+ * @ch_params: channel params
  *
  * Return - None
  */
 static void hdd_hostapd_channel_prevent_suspend(struct hdd_adapter *adapter,
-						uint32_t chan_freq)
+						uint32_t chan_freq,
+						struct ch_params *ch_params)
 {
 	struct hdd_context *hdd_ctx = WLAN_HDD_GET_CTX(adapter);
 	struct hdd_hostapd_state *hostapd_state =
 		WLAN_HDD_GET_HOSTAP_STATE_PTR(adapter->deflink);
 	struct sap_context *sap_ctx;
+	bool is_dfs;
 
 	hdd_debug("bss_state: %d, chan_freq: %d, dfs_ref_cnt: %d",
 		  hostapd_state->bss_state, chan_freq,
@@ -437,9 +444,10 @@ static void hdd_hostapd_channel_prevent_suspend(struct hdd_adapter *adapter,
 		return;
 	}
 
-	if (!sap_chan_bond_dfs_sub_chan(sap_ctx,
+	is_dfs = wlan_mlme_check_chan_param_has_dfs(hdd_ctx->pdev,
-					chan_freq,
+						    &sap_ctx->ch_params,
-					PHY_CHANNEL_BONDING_STATE_MAX))
+						    chan_freq);
+	if (!is_dfs)
 		return;
 
 	/* Acquire wakelock if we have at least one DFS channel in use */
@@ -2353,7 +2361,8 @@ QDF_STATUS hdd_hostapd_sap_event_cb(struct sap_event *sap_event,
 		wlan_hdd_auto_shutdown_enable(hdd_ctx, true);
 #endif
 		hdd_hostapd_channel_prevent_suspend(adapter,
-			ap_ctx->operating_chan_freq);
+			ap_ctx->operating_chan_freq,
+			&sap_config->ch_params);
 
 		hostapd_state->bss_state = BSS_START;
 		vdev = hdd_objmgr_get_vdev_by_user(link_info, WLAN_DP_ID);
@@ -2428,7 +2437,8 @@ QDF_STATUS hdd_hostapd_sap_event_cb(struct sap_event *sap_event,
 		       status ? "eSAP_STATUS_FAILURE" : "eSAP_STATUS_SUCCESS");
 
 		hdd_hostapd_channel_allow_suspend(adapter,
-						  ap_ctx->operating_chan_freq);
+						  ap_ctx->operating_chan_freq,
+						  &ap_ctx->sap_context->ch_params);
 
 		/* Invalidate the channel info. */
 		ap_ctx->operating_chan_freq = 0;
@@ -3017,10 +3027,12 @@ QDF_STATUS hdd_hostapd_sap_event_cb(struct sap_event *sap_event,
 		if (hostapd_state->bss_state != BSS_STOP) {
 			/* Allow suspend for old channel */
 			hdd_hostapd_channel_allow_suspend(adapter,
-				ap_ctx->sap_context->freq_before_ch_switch);
+				ap_ctx->sap_context->freq_before_ch_switch,
+				&ap_ctx->sap_context->ch_params_before_ch_switch);
 			/* Prevent suspend for new channel */
 			hdd_hostapd_channel_prevent_suspend(adapter,
-				sap_event->sapevt.sap_ch_selected.pri_ch_freq);
+				sap_event->sapevt.sap_ch_selected.pri_ch_freq,
+				&ap_ctx->sap_context->ch_params);
 		}
 		/* SME/PE is already updated for new operation
 		 * channel. So update HDD layer also here. This

core/sap/src/sap_internal.h

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2012-2021 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
@@ -235,6 +235,7 @@ struct sap_context {
 	qdf_list_t ft_pending_assoc_ind_list;
 	qdf_event_t ft_pending_event;
 	uint32_t freq_before_ch_switch;
+	struct ch_params ch_params_before_ch_switch;
 #ifdef WLAN_FEATURE_P2P_P2P_STA
 /*
  *This param is used for GO+GO force scc logic where after

core/sap/src/sap_module.c

@@ -2025,11 +2025,12 @@ QDF_STATUS wlansap_channel_change_request(struct sap_context *sap_ctx,
 	wlan_reg_set_channel_params_for_pwrmode(mac_ctx->pdev, target_chan_freq,
 						0, ch_params,
 						REG_CURRENT_PWR_MODE);
-	sap_ctx->ch_params = *ch_params;
+	sap_ctx->ch_params_before_ch_switch = sap_ctx->ch_params;
 	sap_ctx->freq_before_ch_switch = sap_ctx->chan_freq;
 	/* Update the channel as this will be used to
 	 * send event to supplicant
 	 */
+	sap_ctx->ch_params = *ch_params;
 	sap_ctx->chan_freq = target_chan_freq;
 	wlansap_get_sec_channel(ch_params->sec_ch_offset, sap_ctx->chan_freq,
 				&sap_ctx->sec_ch_freq);