diff --git a/umac/dfs/core/src/dfs.h b/umac/dfs/core/src/dfs.h
index 9f2fb7aa5d..925c0026b4 100644
--- a/umac/dfs/core/src/dfs.h
+++ b/umac/dfs/core/src/dfs.h
@@ -966,9 +966,15 @@ struct dfs_event_log {
  * @dfs_no_res_from_fw:              Indicates no response from fw.
  * @dfs_spoof_check_failed:          Indicates if the spoof check has failed.
  * @dfs_spoof_test_done:             Indicates if the sppof test is done.
- * @dfs_seg_id:                      Segment ID of the radar hit channel.
  * @dfs_status_timeout_override:     Used to change the timeout value of
  *                                   dfs_host_wait_timer.
+ * @dfs_min_sidx:                    Minimum sidx of the received radar pulses.
+ * @dfs_max_sidx:                    Maximum sidx of the received radar pulses.
+ * @dfs_seg_id:                      Segment ID of the radar hit channel.
+ * @dfs_is_chirp:                    Radar Chirp in pulse present or not.
+ * @dfs_bw_reduced:                  DFS bandwidth reduced channel bit.
+ * @dfs_freq_offset:                 Frequency offset where radar was found.
+ * @dfs_enhanced_bangradar:          DFS enhance bagradar bit for Full offload.
  */
 struct wlan_dfs {
 	uint32_t       dfs_debug_mask;
@@ -1087,10 +1093,16 @@ struct wlan_dfs {
 				   dfs_no_res_from_fw:1,
 				   dfs_spoof_check_failed:1,
 				   dfs_spoof_test_done:1;
-	uint8_t        dfs_seg_id;
 	struct dfs_channel dfs_radar_found_chan;
 	int            dfs_status_timeout_override;
 #endif
+	uint32_t       dfs_min_sidx;
+	uint32_t       dfs_max_sidx;
+	uint8_t        dfs_seg_id;
+	uint8_t        dfs_is_chirp;
+	uint8_t        dfs_bw_reduced;
+	int32_t        dfs_freq_offset;
+	uint8_t        dfs_enhanced_bangradar;
 };
 
 /**
diff --git a/umac/dfs/core/src/dfs_process_radar_found_ind.h b/umac/dfs/core/src/dfs_process_radar_found_ind.h
index b6ee1f48b3..26f739a27a 100644
--- a/umac/dfs/core/src/dfs_process_radar_found_ind.h
+++ b/umac/dfs/core/src/dfs_process_radar_found_ind.h
@@ -58,6 +58,8 @@
 
 /* Frequency offset to sidx */
 #define DFS_FREQ_OFFSET_TO_SIDX(_f)  ((32 * (_f)) / 10)
+/* Sidx to frequency offset */
+#define DFS_SIDX_TO_FREQ_OFFSET(_s)  ((10 * (_s)) / 32)
 /* sidx offset boundary */
 #define DFS_BOUNDARY_SIDX  32
 /* freq offset for chirp */
diff --git a/umac/dfs/core/src/filtering/dfs_bindetects.c b/umac/dfs/core/src/filtering/dfs_bindetects.c
index 13c500aba0..67548ad0a1 100644
--- a/umac/dfs/core/src/filtering/dfs_bindetects.c
+++ b/umac/dfs/core/src/filtering/dfs_bindetects.c
@@ -24,6 +24,7 @@
  */
 
 #include "../dfs.h"
+#include "../dfs_process_radar_found_ind.h"
 
 /**
  * dfs_find_first_index_within_window() - Find first index within window
@@ -169,8 +170,16 @@ static inline int dfs_pulses_within_window(
 					refpri, index, dur, &numpulses))
 				break;
 		}
+		if (dfs->dfs_min_sidx > pl->pl_elems[*index].p_sidx)
+			dfs->dfs_min_sidx = pl->pl_elems[*index].p_sidx;
+
+		if (dfs->dfs_max_sidx < pl->pl_elems[*index].p_sidx)
+			dfs->dfs_max_sidx = pl->pl_elems[*index].p_sidx;
 	}
 
+	dfs->dfs_freq_offset =
+		DFS_SIDX_TO_FREQ_OFFSET((dfs->dfs_min_sidx +
+					 dfs->dfs_min_sidx) / 2);
 	return numpulses;
 }
 
diff --git a/umac/dfs/core/src/filtering/dfs_fcc_bin5.c b/umac/dfs/core/src/filtering/dfs_fcc_bin5.c
index 347799cefc..14b319a7ad 100644
--- a/umac/dfs/core/src/filtering/dfs_fcc_bin5.c
+++ b/umac/dfs/core/src/filtering/dfs_fcc_bin5.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013, 2016-2017 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013, 2016-2018 The Linux Foundation. All rights reserved.
  * Copyright (c) 2002-2010, Atheros Communications Inc.
  *
  * Permission to use, copy, modify, and/or distribute this software for any
@@ -99,6 +99,11 @@ int dfs_bin5_addpulse(struct wlan_dfs *dfs,
 		}
 	}
 
+	if (dfs->dfs_min_sidx > re->re_sidx)
+		dfs->dfs_min_sidx = re->re_sidx;
+
+	if (dfs->dfs_max_sidx < re->re_sidx)
+		dfs->dfs_max_sidx = re->re_sidx;
 	/* Circular buffer of size 2^n. */
 	index = (br->br_lastelem + 1) & DFS_MAX_B5_MASK;
 	br->br_lastelem = index;
diff --git a/umac/dfs/core/src/filtering/dfs_process_radarevent.c b/umac/dfs/core/src/filtering/dfs_process_radarevent.c
index 89c4f1f89f..938b004862 100644
--- a/umac/dfs/core/src/filtering/dfs_process_radarevent.c
+++ b/umac/dfs/core/src/filtering/dfs_process_radarevent.c
@@ -292,7 +292,11 @@ static int dfs_confirm_radar(struct wlan_dfs *dfs,
 			  rf->rf_threshold);
 		return 0;
 	}
+	dfs_debug(dfs, WLAN_DEBUG_DFS_FALSE_DET, "%s : dl->dl_min_sidx: %d , dl->dl_max_sidx :%d",
+		  __func__, dl->dl_min_sidx, dl->dl_max_sidx);
 
+	dfs->dfs_freq_offset = DFS_SIDX_TO_FREQ_OFFSET((dl->dl_min_sidx +
+							dl->dl_max_sidx) / 2);
 	return 1;
 }
 
@@ -1238,9 +1242,16 @@ static inline int dfs_process_each_radarevent(
 		dfs_conditional_clear_delaylines(dfs, diff_ts, this_ts, re);
 
 		found = 0;
+		if (events_processed == 1) {
+			dfs->dfs_min_sidx = (re).re_sidx;
+			dfs->dfs_max_sidx = (re).re_sidx;
+		}
+
 		dfs_check_if_bin5(dfs, &re, this_ts, diff_ts, &found);
 		if (found) {
 			*retval |= found;
+			dfs->dfs_freq_offset = DFS_SIDX_TO_FREQ_OFFSET(
+				   (dfs->dfs_min_sidx + dfs->dfs_max_sidx) / 2);
 			return 1;
 		}
 
diff --git a/umac/dfs/core/src/filtering/dfs_staggered.c b/umac/dfs/core/src/filtering/dfs_staggered.c
index 1be33310dd..b0d08a69a5 100644
--- a/umac/dfs/core/src/filtering/dfs_staggered.c
+++ b/umac/dfs/core/src/filtering/dfs_staggered.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013, 2016-2017 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013, 2016-2018 The Linux Foundation. All rights reserved.
  * Copyright (c) 2002-2010, Atheros Communications Inc.
  *
  * Permission to use, copy, modify, and/or distribute this software for any
@@ -24,6 +24,7 @@
  */
 
 #include "../dfs.h"
+#include "../dfs_process_radar_found_ind.h"
 
 /**
  * dfs_is_pri_multiple() - Is PRI is multiple.
@@ -144,6 +145,9 @@ int dfs_staggered_check(struct wlan_dfs *dfs, struct dfs_filter *rf,
 		}
 	}
 
+	dfs->dfs_freq_offset = DFS_SIDX_TO_FREQ_OFFSET(
+				       (dl->dl_min_sidx + dl->dl_max_sidx) / 2);
+
 	for (n = 0; n < dl->dl_numelems; n++) {
 		delayindex = (dl->dl_firstelem + n) & DFS_MAX_DL_MASK;
 		refdur = dl->dl_elems[delayindex].de_time;
diff --git a/umac/dfs/core/src/misc/dfs.c b/umac/dfs/core/src/misc/dfs.c
index b6f9cc1a9e..5445ce466d 100644
--- a/umac/dfs/core/src/misc/dfs.c
+++ b/umac/dfs/core/src/misc/dfs.c
@@ -121,6 +121,7 @@ int dfs_attach(struct wlan_dfs *dfs)
 	dfs_zero_cac_attach(dfs);
 	dfs_etsi_precac_attach(dfs);
 	dfs_nol_attach(dfs);
+	dfs->dfs_use_nol_subchannel_marking = 1;
 
 	/*
 	 * Init of timer ,dfs_testtimer_task is required by both partial
@@ -207,6 +208,7 @@ int dfs_control(struct wlan_dfs *dfs,
 {
 	struct wlan_dfs_phyerr_param peout;
 	struct dfs_ioctl_params *dfsparams;
+	struct dfs_bangradar_enh_params *bangradar_enh_params;
 	int error = 0;
 	uint32_t val = 0;
 	struct dfsreq_nolinfo *nol;
@@ -260,6 +262,39 @@ int dfs_control(struct wlan_dfs *dfs,
 					dfsparams->dfs_maxlen))
 			error = -EINVAL;
 		break;
+	case DFS_BANGRADAR_ENH:
+		if (insize < sizeof(struct dfs_bangradar_enh_params) ||
+		    !indata) {
+			dfs_debug(dfs, WLAN_DEBUG_DFS1,
+				  "insize = %d, expected = %zu bytes, indata = %pK",
+				  insize,
+				  sizeof(struct dfs_bangradar_enh_params),
+				  indata);
+			error = -EINVAL;
+			break;
+		}
+		bangradar_enh_params =
+				      (struct dfs_bangradar_enh_params *)indata;
+		if (bangradar_enh_params) {
+			dfs->dfs_seg_id = bangradar_enh_params->seg_id;
+			dfs->dfs_is_chirp = bangradar_enh_params->is_chirp;
+			dfs->dfs_freq_offset =
+					      bangradar_enh_params->freq_offset;
+			dfs->dfs_enhanced_bangradar = 1;
+
+			if (dfs->dfs_is_offload_enabled) {
+				error = dfs_fill_emulate_bang_radar_test
+							(dfs, SEG_ID_PRIMARY,
+							 &dfs_unit_test);
+			} else {
+				dfs->dfs_bangradar = 1;
+				error = dfs_start_host_based_bangradar(dfs);
+			}
+		} else {
+			dfs_info(dfs, WLAN_DEBUG_DFS_ALWAYS, "bangradar_enh_params is NULL");
+		}
+
+		break;
 	case DFS_GET_THRESH:
 		if (!outdata || !outsize ||
 				*outsize < sizeof(struct dfs_ioctl_params)) {
diff --git a/umac/dfs/core/src/misc/dfs_process_radar_found_ind.c b/umac/dfs/core/src/misc/dfs_process_radar_found_ind.c
index 1fdc87fbac..1f523140c9 100644
--- a/umac/dfs/core/src/misc/dfs_process_radar_found_ind.c
+++ b/umac/dfs/core/src/misc/dfs_process_radar_found_ind.c
@@ -479,6 +479,18 @@ QDF_STATUS dfs_process_radar_ind(struct wlan_dfs *dfs,
 		return QDF_STATUS_SUCCESS;
 	}
 
+	/* For Full Offload, FW sends segment id,freq_offset and
+	 * is chirp information and gets assigned when there is radar detect.
+	 * In case of radartool bangradar enhanced command and real radar
+	 * for FO and PO, we assign these information here.
+	 */
+	if (!dfs->dfs_is_offload_enabled || dfs->dfs_enhanced_bangradar) {
+		radar_found->segment_id = dfs->dfs_seg_id;
+		radar_found->freq_offset = dfs->dfs_freq_offset;
+		radar_found->is_chirp = dfs->dfs_is_chirp;
+		dfs->dfs_enhanced_bangradar = 0;
+	}
+
 	if (dfs->dfs_use_nol_subchannel_marking)
 		num_channels = dfs_find_radar_affected_subchans(dfs,
 								radar_found,
diff --git a/umac/dfs/dispatcher/inc/wlan_dfs_ioctl.h b/umac/dfs/dispatcher/inc/wlan_dfs_ioctl.h
index 978dd2df9c..87961ee88e 100644
--- a/umac/dfs/dispatcher/inc/wlan_dfs_ioctl.h
+++ b/umac/dfs/dispatcher/inc/wlan_dfs_ioctl.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2016-2017 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2011, 2016-2018 The Linux Foundation. All rights reserved.
  * Copyright (c) 2010, Atheros Communications Inc.
  * All Rights Reserved.
  *
@@ -51,13 +51,14 @@
 #define DFS_SECOND_SEGMENT_BANGRADAR  23
 #define DFS_SHOW_PRECAC_LISTS    24
 #define DFS_RESET_PRECAC_LISTS   25
+#define DFS_BANGRADAR_ENH        26
 
 /*
  * Spectral IOCTLs use DFS_LAST_IOCTL as the base.
  * This must always be the last IOCTL in DFS and have
  * the highest value.
  */
-#define DFS_LAST_IOCTL 26
+#define DFS_LAST_IOCTL 27
 
 #ifndef DFS_CHAN_MAX
 #define DFS_CHAN_MAX 1023
@@ -119,6 +120,17 @@ struct dfs_ioctl_params {
 	int32_t dfs_maxlen;
 };
 
+/**
+ * struct dfs_bangradar_enh_params - DFS enhanced bangradr params.
+ * @seg_id:      Segment ID information.
+ * @is_chirp:    Chirp radar or not.
+ * @freq_offset: Frequency offset at which radar was found.
+ */
+struct dfs_bangradar_enh_params {
+	uint8_t seg_id;
+	uint8_t is_chirp;
+	int32_t freq_offset;
+};
 #define DFS_IOCTL_PARAM_NOVAL  65535
 #define DFS_IOCTL_PARAM_ENABLE 0x8000
 
@@ -144,6 +156,9 @@ struct dfs_ioctl_params {
 /* Flag to exclude all 2.4GHz channels */
 #define DFS_RANDOM_CH_FLAG_NO_2GHZ_CH           0x0040 /* 0000 0000 0100 0000 */
 
+/* Flag to enable Reduced BW Agile DFS */
+#define DFS_RANDOM_CH_FLAG_ENABLE_REDUCED_BW    0x0080 /* 0000 0000 1000 0000 */
+
 /**
  * struct wlan_dfs_caps - DFS capability structure.
  * @wlan_dfs_ext_chan_ok:         Can radar be detected on the extension chan?
diff --git a/umac/dfs/dispatcher/inc/wlan_dfs_utils_api.h b/umac/dfs/dispatcher/inc/wlan_dfs_utils_api.h
index 3a00f5c110..ccbf754fcc 100644
--- a/umac/dfs/dispatcher/inc/wlan_dfs_utils_api.h
+++ b/umac/dfs/dispatcher/inc/wlan_dfs_utils_api.h
@@ -403,6 +403,24 @@ QDF_STATUS utils_dfs_get_random_channel(struct wlan_objmgr_pdev *pdev,
 		uint32_t *hw_mode, uint8_t *target_chan,
 		struct dfs_acs_info *acs_info);
 
+/**
+ * utils_dfs_bw_reduced_channel() - Get BW reduced channel.
+ * @pdev: Pointer to DFS pdev object.
+ * @flags: Reduced bandwidth channel flags.
+ * @ch_params: current channel params.
+ * @hw_mode: current operating mode.
+ * @target_chan: Pointer to target_chan.
+ *
+ * wrapper function for get bw_reduced_channel. this
+ * function called from outside of dfs component.
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS utils_dfs_bw_reduced_channel(struct wlan_objmgr_pdev *pdev,
+					uint16_t flags,
+					struct ch_params *ch_params,
+					uint32_t *hw_mode,
+					uint8_t *target_chan);
 /**
  * utils_dfs_init_nol() - Initialize nol from platform driver.
  * @pdev: pdev handler.
diff --git a/umac/dfs/dispatcher/src/wlan_dfs_utils_api.c b/umac/dfs/dispatcher/src/wlan_dfs_utils_api.c
index 61e09a3a19..2b0b33dd52 100644
--- a/umac/dfs/dispatcher/src/wlan_dfs_utils_api.c
+++ b/umac/dfs/dispatcher/src/wlan_dfs_utils_api.c
@@ -419,6 +419,15 @@ QDF_STATUS utils_dfs_is_ignore_cac(struct wlan_objmgr_pdev *pdev,
 
 	*ignore_cac = dfs->dfs_ignore_cac;
 
+	/*
+	 * This is needed as, if after channel bandwidth reduction, channel
+	 * change occurs using dothchanswitch or chan commands, resetting.
+	 * dfs->dfs_ignore_cac will make sure we not skip CAC on the new channel
+	 */
+
+	if (dfs->dfs_bw_reduced)
+		dfs->dfs_ignore_cac = 0;
+
 	return QDF_STATUS_SUCCESS;
 }
 qdf_export_symbol(utils_dfs_is_ignore_cac);
@@ -752,6 +761,57 @@ random_chan_error:
 }
 qdf_export_symbol(utils_dfs_get_random_channel);
 
+QDF_STATUS utils_dfs_bw_reduced_channel(
+	struct wlan_objmgr_pdev *pdev,
+	uint16_t flags,
+	struct ch_params *ch_params,
+	uint32_t *hw_mode,
+	uint8_t *target_chan)
+{
+	struct wlan_dfs *dfs = NULL;
+	struct wlan_objmgr_psoc *psoc;
+	enum channel_state ch_state;
+	QDF_STATUS status = QDF_STATUS_E_FAILURE;
+
+	*target_chan = 0;
+	psoc = wlan_pdev_get_psoc(pdev);
+	if (!psoc) {
+		dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS,  "null psoc");
+		return status;
+	}
+
+	dfs = global_dfs_to_mlme.pdev_get_comp_private_obj(pdev);
+	if (!dfs) {
+		dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS,  "null dfs");
+		return status;
+	}
+
+	ch_state = reg_get_channel_state(pdev, dfs->dfs_curchan->dfs_ch_ieee);
+
+	if (ch_state == CHANNEL_STATE_DFS ||
+	    ch_state == CHANNEL_STATE_ENABLE) {
+		ch_params->center_freq_seg0 =
+			dfs->dfs_curchan->dfs_ch_vhtop_ch_freq_seg1;
+		ch_params->center_freq_seg1 =
+			dfs->dfs_curchan->dfs_ch_vhtop_ch_freq_seg2;
+		/*If bandwidth reduction is applied,
+		 * dfs_ignore_cac ensures we skip CAC.
+		 */
+		dfs->dfs_ignore_cac = 1;
+		dfs->dfs_bw_reduced = 1;
+		wlan_reg_set_channel_params(pdev,
+					    dfs->dfs_curchan->dfs_ch_ieee,
+					    0, ch_params);
+
+		*target_chan = dfs->dfs_curchan->dfs_ch_ieee;
+		utils_dfs_get_max_phy_mode(pdev, hw_mode);
+
+		return QDF_STATUS_SUCCESS;
+	}
+
+	return status;
+}
+
 #ifdef QCA_DFS_NOL_PLATFORM_DRV_SUPPORT
 void utils_dfs_init_nol(struct wlan_objmgr_pdev *pdev)
 {