chan_switch not working

[kpandu987]

Hi,

Kindly help me to address the below queries,

1. Below command is not working in rpi

              root@RaspberryPi-Gateway:~# hostapd_cli chan_switch 5 5240 
             Selected interface 'wlan1'
             FAIL
   
          hostapd logs :
   
           RX ctrl_iface - hexdump_ascii(len=18):
           43 48 41 4e 5f 53 57 49 54 43 48 20 35 20 35 32   CHAN_SWITCH 5 52
           34 30                                             40              
           DFS CAC required: (5230, 5250): in range: no
           wlan1: IEEE 802.11 CHAN_SWITCH HE config 0x2 VHT config 0x2
           CSA is not supported

2. Whether this driver have CSA supported ?

3. Is that mandatory to re-enable the AP/radio when we switch the new channel ?