启动热点

RK3568或RK3588
Ubuntu, Debian系统
Wi-Fi：AP6275S / FD7352S等

其他配置也可作参考验证

配置 AP 模式

安装 hostapd

sudo apt install hostapd

配置 hostapd

创建/etc/hostapd/hostapd.conf文件，内容如下：

2.4GHz
5GHz

interface=wlan0  
driver=nl80211  
ssid=neardi_hostapd  
hw_mode=g  
channel=6  
wmm_enabled=0  
macaddr_acl=0  
auth_algs=1  
ignore_broadcast_ssid=0  
wpa=2  
wpa_passphrase=12345678  
wpa_key_mgmt=WPA-PSK  
wpa_pairwise=TKIP  
rsn_pairwise=CCMP

interface=wlan0  
driver=nl80211  
ssid=neardi_hostapd_5G  
hw_mode=a  
channel=36  
wmm_enabled=0  
macaddr_acl=0  
auth_algs=1  
ignore_broadcast_ssid=0  
wpa=2  
wpa_passphrase=12345678  
wpa_key_mgmt=WPA-PSK  
wpa_pairwise=TKIP  
rsn_pairwise=CCMP  
country_code=CN  
ieee80211d=1  
ieee80211h=1

更改/etc/default/hostapd, 内容如下:

# Defaults for hostapd initscript
#
# WARNING: The DAEMON_CONF setting has been deprecated and will be removed
#          in future package releases.
#
# See /usr/share/doc/hostapd/README.Debian for information about alternative
# methods of managing hostapd.
#
# Uncomment and set DAEMON_CONF to the absolute path of a hostapd configuration
# file and hostapd will be started during system boot. An example configuration
# file can be found at /usr/share/doc/hostapd/examples/hostapd.conf.gz
#
#DAEMON_CONF=""  
  
# Additional daemon options to be appended to hostapd command:-
#       -d   show more debug messages (-dd for even more)
#       -K   include key data in debug messages
#       -t   include timestamps in some debug messages
#
# Note that -B (daemon mode) and -P (pidfile) options are automatically
# configured by the init.d script and must not be added to DAEMON_OPTS.
#
#DAEMON_OPTS=""  
DAEMON_CONF="/etc/hostapd/hostapd.conf"

最后执行如下命令:

sudo systemctl unmask hostapd  
sudo systemctl restart hostapd

配置 DHCP Server

安装 DHCP Server

sudo apt install isc-dhcp-server

配置 wlan0

首先设置wlan0的IPv4的地址，如下命令：

sudo ifconfig wlan0 192.168.200.1

之后更改/etc/default/isc-dhcp-server, 内容如下：

# Defaults for isc-dhcp-server (sourced by /etc/init.d/isc-dhcp-server)
# Path to dhcpd's config file (default: /etc/dhcp/dhcpd.conf).
#DHCPDv4_CONF=/etc/dhcp/dhcpd.conf  
#DHCPDv6_CONF=/etc/dhcp/dhcpd6.conf  
  
# Path to dhcpd's PID file (default: /var/run/dhcpd.pid).
#DHCPDv4_PID=/var/run/dhcpd.pid  
#DHCPDv6_PID=/var/run/dhcpd6.pid  
  
# Additional options to start dhcpd with.
#       Don't use options -cf or -pf here; use DHCPD_CONF/ DHCPD_PID instead
#OPTIONS=""  
  
# On what interfaces should the DHCP server (dhcpd) serve DHCP requests?
#       Separate multiple interfaces with spaces, e.g. "eth0 eth1".
INTERFACESv4="wlan0"  
INTERFACESv6=""

再更改/etc/dhcp/dhcpd.conf, 内容如下：

# dhcpd.conf
#
# Sample configuration file for ISC dhcpd
#
# option definitions common to all supported networks...
option domain-name "example.org";                                        
option domain-name-servers 8.8.8.8;       
                                                         
default-lease-time 600;                        
max-lease-time 7200;                                                 
                                        
# The ddns-updates-style parameter controls whether or not the server will
...  
...  
  
#shared-network 224-29 {                                               
#  subnet 10.17.224.0 netmask 255.255.255.0 {
#    option routers rtr-224.example.org;
#  }
#  subnet 10.0.29.0 netmask 255.255.255.0 {
#    option routers rtr-29.example.org;
#  }
#  pool {
#    allow members of "foo";
#    range 10.17.224.10 10.17.224.250;
#  }
#  pool {
#    deny members of "foo";
#    range 10.0.29.10 10.0.29.230;
#  }
#}               
                     
subnet 192.168.200.0 netmask 255.255.255.0 {                            
	range 192.168.200.100 192.168.200.200;                    
	option routers 192.168.200.1;             
	option domain-name-servers 8.8.8.8, 8.8.4.4;             
}

最后启动DHCP SERVER, 如下命令：

sudo systemctl restart isc-dhcp-server

启动成功：

wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500  
        inet 192.168.200.1  netmask 255.255.255.0  broadcast 192.168.200.255  
        ether 70:f7:54:87:08:76  txqueuelen 1000  (Ethernet)  
        RX packets 19895  bytes 4527795 (4.3 MiB)  
        RX errors 0  dropped 6  overruns 0  frame 0  
        TX packets 196  bytes 16517 (16.1 KiB)  
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

开机自启动（可选）

新增/usr/local/bin/apstart.sh，内容如下：

#!/bin/bash  
# 等待 wlan0 出现
for i in {1..15}; do  
    if ip link show wlan0 >/dev/null 2>&1; then break; fi  
    sleep 1  
done  
  
# 停掉可能占用 wlan0 的 wpa_supplicant
if systemctl is-active --quiet wpa_supplicant; then  
    echo "[APStart] stopping wpa_supplicant..."  
    systemctl stop wpa_supplicant  
fi  
  
# 永久屏蔽 wpa_supplicant，防止 systemd 自动重启
if ! systemctl is-enabled wpa_supplicant 2>/dev/null | grep -q masked; then  
    echo "[APStart] masking wpa_supplicant..."  
    systemctl mask wpa_supplicant  
fi  
  
# 配置 IP
ip link set wlan0 up  
ip addr add 192.168.200.1/24 dev wlan0  
  
# 启动 hostapd 并等待
systemctl unmask hostapd  
systemctl restart hostapd  
sleep 5  
  
# 确认 hostapd 已启动，否则重试
if ! systemctl is-active --quiet hostapd; then  
    echo "hostapd failed, retrying..."  
    systemctl restart hostapd  
    sleep 5  
fi  
  
# 启动 DHCP
systemctl restart isc-dhcp-server

新增/etc/systemd/system/apstart.service，内容如下：

[Unit]  
Description=Start AP on wlan0  
After=network.target  
Wants=network.target  
  
[Service]  
Type=oneshot  
RemainAfterExit=yes  
ExecStart=/usr/local/bin/apstart.sh  
ExecStop=/bin/systemctl stop hostapd  
  
[Install]  
WantedBy=multi-user.target

启用服务

sudo chmod +x /usr/local/bin/apstart.sh  
sudo systemctl daemon-reload  
sudo systemctl enable apstart.service  
sudo systemctl start apstart.service

实现网络共享（可选）

将eth1的网络通过wlan0热点分享出去，参考以下步骤：

#开启网络转发功能  
sudo echo "net.ipv4.ip_forward=1" >> /etc/sysctl.conf  
#网络转发的功能生效  
sudo sysctl -p  
#将从eth1网卡输出的数据包进行源地址伪装，让其他设备通过eth1网卡访问外部网络，而不会被外部网络拒绝  
sudo iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE  
#允许从eth1网卡输入的数据包，若状态是RELATED或者ESTABLISHED，转发到wlan0网卡输出，让eth1网卡收到的响应数据包返回到wlan0  
sudo iptables -A FORWARD -i eth1 -o wlan0 -m state --state RELATED,ESTABLISHED -j ACCEPT  
#允许从wlan0网卡输入的数据包，无条件地转发到eth1网卡输出，让wlan0网卡的设备通过eth1网卡访问外部网络  
sudo iptables -A FORWARD -i wlan0 -o eth1 -j ACCEPT

FAQ

如何查询/设置国家码

可以用 iw reg get 查看国家码：

country 00: DFS-UNSET

可以用 iw reg set CN 设置国家码为中国。

如何确认信道是否 DFS 信道

可以用 iw list | grep MHz -A3 查看具体信道：

* 5180 MHz [36] (30.0 dBm)  
* 5200 MHz [40] (30.0 dBm)  
* 5220 MHz [44] (30.0 dBm)  
* 5240 MHz [48] (30.0 dBm)  
* 5260 MHz [52] (24.0 dBm) (radar detection)

36/40/44/48 没有 (radar detection) → 非 DFS，设置 channel=36 是完全合法的，不会触发 DFS CAC。
52 以上有 (radar detection) → DFS 信道，设置 channel=52 会触发 DFS CAC。

FD7352S/FD7256S IR（伊朗）的国家码库中如何支持36信道

目前通过 iw reg get 打印显示都是disabled。

    * 5180 MHz [36] (disabled)  
	* 5200 MHz [40] (disabled)  
	* 5220 MHz [44] (disabled)  
	* 5240 MHz [48] (disabled)  
	* 5260 MHz [52] (disabled)  
	* 5280 MHz [56] (disabled)  
	* 5300 MHz [60] (disabled)  
	* 5320 MHz [64] (disabled)  
	* 5500 MHz [100] (disabled)  
	* 5520 MHz [104] (disabled)  
	* 5540 MHz [108] (disabled)  
	* 5560 MHz [112] (disabled)  
	* 5580 MHz [116] (disabled)  
	* 5600 MHz [120] (disabled)  
	* 5620 MHz [124] (disabled)  
	* 5640 MHz [128] (disabled)  
	* 5660 MHz [132] (disabled)  
	* 5680 MHz [136] (disabled)  
	* 5700 MHz [140] (disabled)  
	* 5720 MHz [144] (disabled)

SDK加入以下补丁，编译内核烧录验证：

+++ b/kernel-6.1/drivers/net/wireless/rockchip_wlan/skwifi/skw_db.c  
@@ -1416,9 +1416,10 @@ static const struct ieee80211_regdomain regdom_IR = {  
        .dfs_region = NL80211_DFS_JP,  
        .reg_rules = {  
                REG_RULE_EXT(2402, 2482, 40, 0, 20, 0, 0),  
-               REG_RULE_EXT(5735, 5835, 80, 0, 30, 0, 0),  
+               REG_RULE_EXT(5150, 5250, 80, 0, 30, 0, 0),  
+               REG_RULE_EXT(5250, 5350, 80, 0, 24, 0, SKW_RRF_DFS | 0),  
        },  
-       .n_reg_rules = 2  
+       .n_reg_rules = 3  
 };

配置 AP 模式​

安装 hostapd​

配置 hostapd​

配置 DHCP Server​

安装 DHCP Server​

配置 wlan0​

开机自启动（可选）​

实现网络共享（可选）​

FAQ​

如何查询/设置国家码​

如何确认信道是否 DFS 信道​

FD7352S/FD7256S IR（伊朗）的国家码库中如何支持36信道​