diff --git a/umac/dfs/core/src/dfs.h b/umac/dfs/core/src/dfs.h
index 4520564723..f1f5b64a54 100644
--- a/umac/dfs/core/src/dfs.h
+++ b/umac/dfs/core/src/dfs.h
@@ -1117,6 +1117,10 @@ struct dfs_rcac_params {
  * @dfs_is_rcsa_ie_sent:             To send or to not send RCSA IE.
  * @dfs_is_nol_ie_sent:              To send or to not send NOL IE.
  * @dfs_agile_precac_ucfg:           User configuration for agile preCAC.
+ * @dfs_bw_expand_target_freq:       User configured Channel frequency for
+ *                                   bandwidth expansion feature.
+ * @dfs_bw_expand_des_mode:          User configured Channel Phymode for
+ *                                   bandwidth expansion feature.
  * @dfs_agile_rcac_ucfg:             User configuration for Rolling CAC.
  * @dfs_fw_adfs_support_non_160:     Target Agile DFS support for non-160 BWs.
  * @dfs_fw_adfs_support_160:         Target Agile DFS support for 160 BW.
@@ -1287,6 +1291,10 @@ struct wlan_dfs {
 	uint8_t        dfs_nol_ie_bitmap;
 	bool           dfs_is_rcsa_ie_sent;
 	bool           dfs_is_nol_ie_sent;
+#endif
+#if defined(QCA_DFS_BW_EXPAND)
+	qdf_freq_t      dfs_bw_expand_target_freq;
+	enum wlan_phymode dfs_bw_expand_des_mode;
 #endif
 	uint8_t        dfs_agile_precac_ucfg:1,
 #if defined(QCA_SUPPORT_ADFS_RCAC)
diff --git a/umac/dfs/core/src/dfs_zero_cac.h b/umac/dfs/core/src/dfs_zero_cac.h
index 324111b04b..754550ddca 100644
--- a/umac/dfs/core/src/dfs_zero_cac.h
+++ b/umac/dfs/core/src/dfs_zero_cac.h
@@ -1186,4 +1186,20 @@ dfs_translate_radar_params_for_agile_chan(struct wlan_dfs *dfs,
 {
 }
 #endif
+
+/**
+ * dfs_is_subset_channel_for_freq() - Find out if prev channel and current
+ * channel are subsets of each other.
+ * @old_subchans_freq: Pointer to previous sub-channels freq.
+ * @old_n_chans: Number of previous sub-channels.
+ * @new_subchans_freq: Pointer to new sub-channels freq.
+ * @new_n_chans:  Number of new sub-channels
+ */
+#ifdef CONFIG_CHAN_FREQ_API
+bool
+dfs_is_subset_channel_for_freq(uint16_t *old_subchans_freq,
+			       uint8_t old_n_chans,
+			       uint16_t *new_subchans_freq,
+			       uint8_t new_n_chans);
+#endif
 #endif /* _DFS_ZERO_CAC_H_ */
diff --git a/umac/dfs/core/src/misc/dfs_cac.c b/umac/dfs/core/src/misc/dfs_cac.c
index 66e8027fe5..cb3631e4f5 100644
--- a/umac/dfs/core/src/misc/dfs_cac.c
+++ b/umac/dfs/core/src/misc/dfs_cac.c
@@ -349,16 +349,8 @@ void dfs_cac_valid_reset_for_freq(struct wlan_dfs *dfs,
 #endif
 #endif
 
-/*
- * dfs_is_subset_channel_for_freq() - Find out if prev channel and current
- * channel are subsets of each other.
- * @old_subchans_freq: Pointer to previous sub-channels freq.
- * @old_n_chans: Number of previous sub-channels.
- * @new_subchans_freq: Pointer to new sub-channels freq.
- * @new_n_chans:  Number of new sub-channels
- */
 #ifdef CONFIG_CHAN_FREQ_API
-static bool
+bool
 dfs_is_subset_channel_for_freq(uint16_t *old_subchans_freq,
 			       uint8_t old_n_chans,
 			       uint16_t *new_subchans_freq,