qcacld-3.0: Eliminate channel validation for CSA

Currently, Host driver validates the frequency for channel
switch announcement, including checks for DFS, indoor channels
and SAP count.

This change is to remove these checks, allowing the host driver
to honor CSA requests from the AP and switch to the specified
channel for STA.

Once the STA moves, SAP will move to the STA channel and if not
allowed due to DFS/unsafe/indoor rules it will move to 2 GHz band

CRs-Fixed: 3620214
Change-Id: Ib6dfb8ffe798fefe576edc0e0db4f50912604c3c

components/cmn_services/policy_mgr/inc/wlan_policy_mgr_api.h

@@ -4434,19 +4434,6 @@ bool policy_mgr_dual_beacon_on_single_mac_mcc_capable(
 bool policy_mgr_sta_sap_scc_on_lte_coex_chan(
 	struct wlan_objmgr_psoc *psoc);
 
-/**
- * policy_mgr_is_valid_for_channel_switch() - check for valid channel for
- * channel switch.
- * @psoc: pointer to psoc
- * @ch_freq: channel frequency to be validated.
- * This function validates whether the given channel is valid for channel
- * switch.
- *
- * Return: true or false
- */
-bool policy_mgr_is_valid_for_channel_switch(struct wlan_objmgr_psoc *psoc,
-					    uint32_t ch_freq);
-
 /**
  * policy_mgr_get_user_config_sap_freq() - Get the user configured channel
  *

components/cmn_services/policy_mgr/src/wlan_policy_mgr_get_set_utils.c

@@ -10554,7 +10554,6 @@ QDF_STATUS policy_mgr_is_chan_ok_for_dnbs(struct wlan_objmgr_psoc *psoc,
 			 * If operating channel in different band
 			 * (not DBS capable), return false.
 			 */
-			/* TODO: To be enhanced for SBS */
 			if (policy_mgr_is_dnsc_set(vdev)) {
 				if (op_ch_freq_list[i] == ch_freq) {
 					*ok = true;
@@ -10562,12 +10561,13 @@ QDF_STATUS policy_mgr_is_chan_ok_for_dnbs(struct wlan_objmgr_psoc *psoc,
 							vdev,
 							WLAN_POLICY_MGR_ID);
 					break;
-				} else if (WLAN_REG_IS_SAME_BAND_FREQS(
-					op_ch_freq_list[i], ch_freq)) {
+				} else if (policy_mgr_2_freq_always_on_same_mac(
+					   psoc,
+					   op_ch_freq_list[i], ch_freq)) {
 					*ok = false;
 					wlan_objmgr_vdev_release_ref(
-							vdev,
-							WLAN_POLICY_MGR_ID);
+					vdev,
+					WLAN_POLICY_MGR_ID);
 					break;
 				} else if (policy_mgr_is_hw_dbs_capable(psoc)) {
 					*ok = true;
@@ -11334,47 +11334,6 @@ bool policy_mgr_get_ap_6ghz_capable(struct wlan_objmgr_psoc *psoc,
 }
 #endif
 
-bool policy_mgr_is_valid_for_channel_switch(struct wlan_objmgr_psoc *psoc,
-					    uint32_t ch_freq)
-{
-	uint32_t sta_sap_scc_on_dfs_chan, sta_sap_scc_allowed_on_indoor_chan;
-	uint32_t sap_count;
-	enum channel_state state;
-	struct policy_mgr_psoc_priv_obj *pm_ctx;
-
-	pm_ctx = policy_mgr_get_context(psoc);
-	if (!pm_ctx) {
-		policy_mgr_err("Invalid Context");
-		return false;
-	}
-
-	sta_sap_scc_on_dfs_chan =
-			policy_mgr_is_sta_sap_scc_allowed_on_dfs_chan(psoc);
-	sta_sap_scc_allowed_on_indoor_chan =
-			policy_mgr_get_sta_sap_scc_allowed_on_indoor_chnl(psoc);
-
-	sap_count = policy_mgr_mode_specific_connection_count(psoc,
-							      PM_SAP_MODE,
-							      NULL);
-	state = wlan_reg_get_channel_state_for_pwrmode(pm_ctx->pdev, ch_freq,
-						       REG_CURRENT_PWR_MODE);
-
-	policy_mgr_debug("sta_sap_scc_on_dfs_chan %u, sap_count %u, ch freq %u, state %u",
-			 sta_sap_scc_on_dfs_chan, sap_count, ch_freq, state);
-
-	if ((state == CHANNEL_STATE_ENABLE) || (sap_count == 0) ||
-	    (wlan_reg_is_dfs_for_freq(pm_ctx->pdev, ch_freq) &&
-	     sta_sap_scc_on_dfs_chan) ||
-	    (sta_sap_scc_allowed_on_indoor_chan &&
-	     wlan_reg_is_freq_indoor(pm_ctx->pdev, ch_freq))) {
-		policy_mgr_debug("Valid channel for channel switch");
-		return true;
-	}
-
-	policy_mgr_debug("Invalid channel for channel switch");
-	return false;
-}
-
 bool policy_mgr_is_sta_sap_scc(struct wlan_objmgr_psoc *psoc,
 			       uint32_t sap_freq)
 {

core/mac/src/pe/lim/lim_utils.c

@@ -4249,7 +4249,6 @@ lim_get_b_dfrom_rx_packet(struct mac_context *mac, void *body, uint32_t **pRxPac
 bool lim_is_channel_valid_for_channel_switch(struct mac_context *mac,
 					     uint32_t channel_freq)
 {
-	uint8_t index;
 	bool ok = false;
 
 	if (policy_mgr_is_chan_ok_for_dnbs(mac->psoc, channel_freq,
@@ -4263,15 +4262,9 @@ bool lim_is_channel_valid_for_channel_switch(struct mac_context *mac,
 		return false;
 	}
 
-	for (index = 0; index < mac->mlme_cfg->reg.valid_channel_list_num; index++) {
-		if (mac->mlme_cfg->reg.valid_channel_freq_list[index] !=
-		    channel_freq)
-			continue;
-
-		ok = policy_mgr_is_valid_for_channel_switch(
-				mac->psoc, channel_freq);
-		return ok;
-	}
+	if (wlan_reg_is_freq_enabled(mac->pdev, channel_freq,
+				     REG_CURRENT_PWR_MODE))
+		return true;
 
 	/* channel does not belong to list of valid channels */
 	return false;