From 85b42f4930d95189ca1cc70d25dae93efe220b0b Mon Sep 17 00:00:00 2001
From: Bala Venkatesh <bjavvaji@codeaurora.org>
Date: Fri, 8 Jun 2018 12:38:35 +0530
Subject: [PATCH] qcacmn: Ignore CSA if the channel is DFS or disabled

If MCC to SCC switch is enabled, SAP is active and CSA
received for STA interface, then ignore the CSA if channel
is DFS/disabled.

CRs-Fixed: 2263037
Change-Id: I98b8d957766358ea86cc9f50339725cf4bf0038b
---
 inc/wlan_policy_mgr_api.h           | 13 +++++++++++
 src/wlan_policy_mgr_get_set_utils.c | 34 +++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)

diff --git a/inc/wlan_policy_mgr_api.h b/inc/wlan_policy_mgr_api.h
index c58f81812595..9b866395dabf 100644
--- a/inc/wlan_policy_mgr_api.h
+++ b/inc/wlan_policy_mgr_api.h
@@ -2391,4 +2391,17 @@ 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_valid_channel_for_channel_switch() - check for valid channel for
+ * channel switch.
+ * @psoc: poniter to psoc
+ * @channel: channel 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,
+					    uint8_t channel);
+
 #endif /* __WLAN_POLICY_MGR_API_H */
diff --git a/src/wlan_policy_mgr_get_set_utils.c b/src/wlan_policy_mgr_get_set_utils.c
index c43a06f0d489..fcc811dbf5c1 100644
--- a/src/wlan_policy_mgr_get_set_utils.c
+++ b/src/wlan_policy_mgr_get_set_utils.c
@@ -3104,3 +3104,37 @@ bool policy_mgr_sta_sap_scc_on_lte_coex_chan(
 	}
 	return pm_ctx->user_cfg.sta_sap_scc_on_lte_coex_chan;
 }
+
+bool policy_mgr_is_valid_for_channel_switch(struct wlan_objmgr_psoc *psoc,
+					    uint8_t channel)
+{
+	uint32_t sta_sap_scc_on_dfs_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);
+	sap_count = policy_mgr_mode_specific_connection_count(psoc,
+							      PM_SAP_MODE,
+							      NULL);
+	state = reg_get_channel_state(pm_ctx->pdev, channel);
+
+	policy_mgr_debug("sta_sap_scc_on_dfs_chan %u, sap_count %u, channel %u, state %u",
+			 sta_sap_scc_on_dfs_chan, sap_count, channel, state);
+
+	if ((state == CHANNEL_STATE_ENABLE) || (sap_count == 0) ||
+	    ((state == CHANNEL_STATE_DFS) && sta_sap_scc_on_dfs_chan)) {
+		policy_mgr_debug("Valid channel for channel switch");
+		return true;
+	}
+
+	policy_mgr_debug("Invalid channel for channel switch");
+	return false;
+}