diff --git a/autobuild_mac80211_release/package/network/services/hostapd/patches/mtk-0011-hostapd-mtk-Add-DFS-offchan-channel-switch.patch b/autobuild_mac80211_release/package/network/services/hostapd/patches/mtk-0011-hostapd-mtk-Add-DFS-offchan-channel-switch.patch
new file mode 100644
index 0000000..1d8baf8
--- /dev/null
+++ b/autobuild_mac80211_release/package/network/services/hostapd/patches/mtk-0011-hostapd-mtk-Add-DFS-offchan-channel-switch.patch
@@ -0,0 +1,192 @@
+From 88dd3df28e3736af4cca0daf4f7d19ab888ea6c4 Mon Sep 17 00:00:00 2001
+From: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
+Date: Mon, 20 Feb 2023 14:56:55 +0800
+Subject: [PATCH 11/16] hostapd: mtk: Add DFS offchan channel switch
+
+Add DFS background chain channel switch command for testing purpose.
+This feature is implemented via hostapd_cli command.
+Command format:
+hostapd_cli -i <interface> raw SET_OFFCHAN_CTRL chan=<dfs_channel>
+
+Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
+---
+ hostapd/ctrl_iface.c | 72 ++++++++++++++++++++++++++++++++++++++++++++
+ src/ap/dfs.c         | 25 ++++++---------
+ src/ap/dfs.h         | 15 +++++++++
+ 3 files changed, 96 insertions(+), 16 deletions(-)
+
+diff --git a/hostapd/ctrl_iface.c b/hostapd/ctrl_iface.c
+index 0b4c234..6ea1573 100644
+--- a/hostapd/ctrl_iface.c
++++ b/hostapd/ctrl_iface.c
+@@ -3542,6 +3542,76 @@ hostapd_ctrl_iface_set_dfs_detect_mode(struct hostapd_data *hapd, char *value,
+ }
+ 
+ 
++static int
++hostapd_ctrl_iface_set_offchan_ctrl(struct hostapd_data *hapd, char *cmd,
++				    char *buf, size_t buflen)
++{
++	struct hostapd_iface *iface = hapd->iface;
++	char *pos, *param;
++	enum hostapd_hw_mode hw_mode;
++	bool chan_found = false;
++	int i, num_available_chandefs, channel, chan_width, sec = 0;
++	int sec_chan_idx_80p80 = -1;
++	u8 oper_centr_freq_seg0_idx, oper_centr_freq_seg1_idx;
++	struct hostapd_channel_data *chan;
++	enum dfs_channel_type type = DFS_NO_CAC_YET;
++
++	param = os_strchr(cmd, ' ');
++	if (!param)
++		return -1;
++	*param++ = '\0';
++
++	pos = os_strstr(param, "chan=");
++	if (pos)
++		channel = strtol(pos + 5, NULL, 10);
++	else
++		return -1;
++
++	num_available_chandefs = dfs_find_channel(iface, NULL, 0, type);
++	for (i = 0; i < num_available_chandefs; i++) {
++		dfs_find_channel(iface, &chan, i, type);
++		if (chan->chan == channel) {
++			chan_found = true;
++			break;
++		}
++	}
++
++	if (!chan_found)
++		return -1;
++
++	if (iface->conf->secondary_channel)
++		sec = 1;
++
++	dfs_adjust_center_freq(iface, chan,
++			       sec,
++			       sec_chan_idx_80p80,
++			       &oper_centr_freq_seg0_idx,
++			       &oper_centr_freq_seg1_idx);
++
++	if (hostapd_start_dfs_cac(iface, iface->conf->hw_mode,
++				  chan->freq, chan->chan,
++				  iface->conf->ieee80211n,
++				  iface->conf->ieee80211ac,
++				  iface->conf->ieee80211ax,
++				  iface->conf->ieee80211be,
++				  sec, hostapd_get_oper_chwidth(iface->conf),
++				  oper_centr_freq_seg0_idx,
++				  oper_centr_freq_seg1_idx, true)) {
++		wpa_printf(MSG_ERROR, "DFS failed to start CAC offchannel");
++		iface->radar_background.channel = -1;
++		return -1;
++	}
++
++	iface->radar_background.channel = chan->chan;
++	iface->radar_background.freq = chan->freq;
++	iface->radar_background.secondary_channel = sec;
++	iface->radar_background.centr_freq_seg0_idx = oper_centr_freq_seg0_idx;
++	iface->radar_background.centr_freq_seg1_idx = oper_centr_freq_seg1_idx;
++
++	return os_snprintf(buf, buflen, "OK\n");
++}
++
++
+ static int hostapd_ctrl_iface_receive_process(struct hostapd_data *hapd,
+ 					      char *buf, char *reply,
+ 					      int reply_size,
+@@ -4104,6 +4174,8 @@ static int hostapd_ctrl_iface_receive_process(struct hostapd_data *hapd,
+ 	} else if (os_strncmp(buf, "DFS_DETECT_MODE ", 16) == 0) {
+ 		reply_len = hostapd_ctrl_iface_set_dfs_detect_mode(hapd, buf + 16,
+ 								   reply, reply_size);
++	} else if (os_strncmp(buf, "SET_OFFCHAN_CTRL", 16) == 0) {
++		reply_len = hostapd_ctrl_iface_set_offchan_ctrl(hapd, buf + 16, reply, reply_size);
+ 	} else {
+ 		os_memcpy(reply, "UNKNOWN COMMAND\n", 16);
+ 		reply_len = 16;
+diff --git a/src/ap/dfs.c b/src/ap/dfs.c
+index 5cb7799..1c3f678 100644
+--- a/src/ap/dfs.c
++++ b/src/ap/dfs.c
+@@ -19,13 +19,6 @@
+ #include "dfs.h"
+ #include "crypto/crypto.h"
+ 
+-
+-enum dfs_channel_type {
+-	DFS_ANY_CHANNEL,
+-	DFS_AVAILABLE, /* non-radar or radar-available */
+-	DFS_NO_CAC_YET, /* radar-not-yet-available */
+-};
+-
+ static struct hostapd_channel_data *
+ dfs_downgrade_bandwidth(struct hostapd_iface *iface, int *secondary_channel,
+ 			u8 *oper_centr_freq_seg0_idx,
+@@ -238,9 +231,9 @@ static int is_in_chanlist(struct hostapd_iface *iface,
+  *  - hapd->vht/he_oper_centr_freq_seg0_idx
+  *  - hapd->vht/he_oper_centr_freq_seg1_idx
+  */
+-static int dfs_find_channel(struct hostapd_iface *iface,
+-			    struct hostapd_channel_data **ret_chan,
+-			    int idx, enum dfs_channel_type type)
++int dfs_find_channel(struct hostapd_iface *iface,
++		     struct hostapd_channel_data **ret_chan,
++		     int idx, enum dfs_channel_type type)
+ {
+ 	struct hostapd_hw_modes *mode;
+ 	struct hostapd_channel_data *chan;
+@@ -299,12 +292,12 @@ static int dfs_find_channel(struct hostapd_iface *iface,
+ }
+ 
+ 
+-static void dfs_adjust_center_freq(struct hostapd_iface *iface,
+-				   struct hostapd_channel_data *chan,
+-				   int secondary_channel,
+-				   int sec_chan_idx_80p80,
+-				   u8 *oper_centr_freq_seg0_idx,
+-				   u8 *oper_centr_freq_seg1_idx)
++void dfs_adjust_center_freq(struct hostapd_iface *iface,
++			    struct hostapd_channel_data *chan,
++			    int secondary_channel,
++			    int sec_chan_idx_80p80,
++			    u8 *oper_centr_freq_seg0_idx,
++			    u8 *oper_centr_freq_seg1_idx)
+ {
+ 	if (!iface->conf->ieee80211ac && !iface->conf->ieee80211ax)
+ 		return;
+diff --git a/src/ap/dfs.h b/src/ap/dfs.h
+index 606c1b3..c2556d2 100644
+--- a/src/ap/dfs.h
++++ b/src/ap/dfs.h
+@@ -9,6 +9,12 @@
+ #ifndef DFS_H
+ #define DFS_H
+ 
++enum dfs_channel_type {
++	DFS_ANY_CHANNEL,
++	DFS_AVAILABLE, /* non-radar or radar-available */
++	DFS_NO_CAC_YET, /* radar-not-yet-available */
++};
++
+ int hostapd_handle_dfs(struct hostapd_iface *iface);
+ 
+ int hostapd_dfs_complete_cac(struct hostapd_iface *iface, int success, int freq,
+@@ -32,5 +38,14 @@ int hostapd_dfs_start_cac(struct hostapd_iface *iface, int freq,
+ int hostapd_handle_dfs_offload(struct hostapd_iface *iface);
+ int hostapd_is_dfs_overlap(struct hostapd_iface *iface, enum chan_width width,
+ 			   int center_freq);
++int dfs_find_channel(struct hostapd_iface *iface,
++		     struct hostapd_channel_data **ret_chan,
++		     int idx, enum dfs_channel_type type);
++void dfs_adjust_center_freq(struct hostapd_iface *iface,
++			    struct hostapd_channel_data *chan,
++			    int secondary_channel,
++			    int sec_chan_idx_80p80,
++			    u8 *oper_centr_freq_seg0_idx,
++			    u8 *oper_centr_freq_seg1_idx);
+ 
+ #endif /* DFS_H */
+-- 
+2.18.0
+