配置hostapd实现无线热点(失败记录)

在 树莓派Raspberry Pi 400 上运行 Kali Linux 时，我尝试 linux-wifi-hotspot: 设置Linux无线热点 ，但是会遇到由于树莓派采用的brmfmac驱动(broadcom芯片)可能会触发内核crash，所以 使用create_ap工具创建软AP 禁止使用虚拟机接口来实现同一个无线网卡同时作为internet接口和共享AP接口。

由于 使用create_ap工具创建软AP 实际是 hostapd 的包装脚本，所以还是可以全程手工配置 hostapd 来实现一个单一无线接口实现Internet共享的无线AP配置。

警告

我的在树莓派上实践尚未成功!

准备

  • 安装必要软件:

    sudo apt install hostapd dnsmasq

配置

  • 检查接口:

    iw list

可以看到:

...
valid interface combinations:
      * #{ managed } <= 1, #{ monitor } <= 1, #{ P2P-device } <= 1, #{ P2P-client, P2P-GO } <= 1,
        total <= 4, #channels <= 2
      * #{ managed } <= 1, #{ AP } <= 1, #{ monitor } <= 1, #{ P2P-client } <= 1, #{ P2P-device } <= 1,
        total <= 5, #channels <= 1

  • 配置 /etc/dnsmasq.conf 内容:

    interface=lo,uap0
no-dhcp-interface=lo,wlan0
dhcp-range=192.168.2.100,192.168.2.200,12h

这里关闭了 wlan0 接口上的dhcp很重要，避免和无线网络上的DHCP服务冲突，启用了虚拟接口 uap0 上的DNS解析。

  • 编辑 /etc/hostapd/hostapd.conf

    interface=uap0
ssid=pipi
hw_mode=g
channel=6
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=2
wpa_passphrase=0123456789
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP

注意，请修改配置中的 ssid 和 wpa_passphrase 内容以符合实际要求

  • 编辑 /etc/network/interfaces

    auto uap0
iface uap0 inet static
address 192.168.2.1
netmask 255.255.255.0

  • 增加一个文件 /usr/local/bin/hostapdstart

    iw dev wlan0 interface add uap0 type __ap
service dnsmasq restart
sysctl net.ipv4.ip_forward=1
iptables -t nat -A POSTROUTING -s 192.168.2.0/24 ! -d 192.168.2.0/24 -j MASQUERADE
ifup uap0
hostapd /etc/hostapd/hostapd.conf

  • 并设置上述脚本可执行:

    chmod 667 /usr/local/bin/hostapdstart

  • 启动:

    hostapdstart

如果正常，也可以:

hostapdstart >1&

我这里遇到 dmesg -T 显示报错:

[Tue Apr 27 17:36:17 2021] brcmfmac: brcmf_link_down: WLC_DISASSOC failed (-52)
[Tue Apr 27 17:36:18 2021] brcmfmac: brcmf_sdio_hostmail: mailbox indicates firmware halted
[Tue Apr 27 17:36:21 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:36:21 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:36:23 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:36:23 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:36:23 2021] brcmfmac: brcmf_c_set_joinpref_default: Set join_pref error (-110)
[Tue Apr 27 17:36:26 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:36:26 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:36:28 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:36:28 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:36:28 2021] brcmfmac: brcmf_cfg80211_connect: BRCMF_C_SET_SSID failed (-110)
[Tue Apr 27 17:36:31 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:36:31 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:36:31 2021] brcmfmac: brcmf_run_escan: error (-110)
[Tue Apr 27 17:36:31 2021] brcmfmac: brcmf_cfg80211_scan: scan error (-110)
[Tue Apr 27 17:36:35 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:36:35 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:36:35 2021] brcmfmac: brcmf_run_escan: error (-110)
[Tue Apr 27 17:36:35 2021] brcmfmac: brcmf_cfg80211_scan: scan error (-110)
[Tue Apr 27 17:36:37 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:36:37 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:36:37 2021] brcmfmac: brcmf_vif_set_mgmt_ie: vndr ie set error : -110
[Tue Apr 27 17:36:37 2021] brcmfmac: brcmf_cfg80211_scan: scan error (-110)
[Tue Apr 27 17:36:40 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:36:40 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:36:40 2021] brcmfmac: brcmf_vif_set_mgmt_ie: vndr ie set error : -110
[Tue Apr 27 17:36:40 2021] brcmfmac: brcmf_cfg80211_scan: scan error (-110)
[Tue Apr 27 17:36:42 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:36:42 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:36:42 2021] brcmfmac: brcmf_cfg80211_get_tx_power: error (-110)
[Tue Apr 27 17:36:42 2021] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[Tue Apr 27 17:36:45 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:36:45 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:36:45 2021] brcmfmac: _brcmf_set_multicast_list: Setting mcast_list failed, -110
[Tue Apr 27 17:36:48 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:36:48 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:36:48 2021] brcmfmac: _brcmf_set_multicast_list: Setting allmulti failed, -110
[Tue Apr 27 17:36:50 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:36:50 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:36:53 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:36:53 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:36:53 2021] brcmfmac: brcmf_cfg80211_get_channel: chanspec failed (-110)
[Tue Apr 27 17:36:55 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:36:55 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:36:55 2021] brcmfmac: brcmf_cfg80211_get_tx_power: error (-110)
[Tue Apr 27 17:36:58 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:36:58 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:36:58 2021] brcmfmac: _brcmf_set_multicast_list: Setting BRCMF_C_SET_PROMISC failed, -110
[Tue Apr 27 17:37:00 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:37:00 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:37:03 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:37:03 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:37:05 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:37:05 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:37:08 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:37:08 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:37:08 2021] brcmfmac: _brcmf_set_multicast_list: Setting mcast_list failed, -110
[Tue Apr 27 17:37:11 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:37:11 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:37:13 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:37:13 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:37:13 2021] brcmfmac: _brcmf_set_multicast_list: Setting allmulti failed, -110
[Tue Apr 27 17:37:16 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:37:16 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:37:16 2021] brcmfmac: _brcmf_set_multicast_list: Setting BRCMF_C_SET_PROMISC failed, -110
[Tue Apr 27 17:37:18 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:37:18 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:37:21 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:37:21 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:37:23 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:37:23 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:37:26 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:37:26 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:37:28 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:37:28 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:37:31 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:37:31 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:37:31 2021] brcmfmac: _brcmf_set_multicast_list: Setting mcast_list failed, -110
[Tue Apr 27 17:37:34 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:37:34 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:37:34 2021] brcmfmac: _brcmf_set_multicast_list: Setting allmulti failed, -110
[Tue Apr 27 17:37:36 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:37:36 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:37:39 2021] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
[Tue Apr 27 17:37:39 2021] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
[Tue Apr 27 17:37:39 2021] brcmfmac: _brcmf_set_multicast_list: Setting BRCMF_C_SET_PROMISC failed, -110
[Tue Apr 27 17:37:44 2021] brcmfmac: brcmf_netdev_set_mac_address: Setting cur_etheraddr failed, -110
[Tue Apr 27 17:37:49 2021] brcmfmac: brcmf_proto_bcdc_query_dcmd: brcmf_proto_bcdc_msg failed w/status -110
[Tue Apr 27 17:37:49 2021] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[Tue Apr 27 17:37:49 2021] brcmfmac: brcmf_cfg80211_set_power_mgmt: power save disabled
[Tue Apr 27 17:37:52 2021] brcmfmac: brcmf_cfg80211_set_power_mgmt: error (-110)
[Tue Apr 27 17:37:57 2021] brcmfmac: _brcmf_set_multicast_list: Setting mcast_list failed, -110
[Tue Apr 27 17:37:59 2021] brcmfmac: brcmf_vif_set_mgmt_ie: vndr ie set error : -110
[Tue Apr 27 17:37:59 2021] brcmfmac: brcmf_cfg80211_scan: scan error (-110)
[Tue Apr 27 17:38:02 2021] brcmfmac: _brcmf_set_multicast_list: Setting allmulti failed, -110
[Tue Apr 27 17:38:04 2021] brcmfmac: brcmf_run_escan: error (-110)
[Tue Apr 27 17:38:04 2021] brcmfmac: brcmf_cfg80211_scan: scan error (-110)
[Tue Apr 27 17:38:07 2021] brcmfmac: _brcmf_set_multicast_list: Setting BRCMF_C_SET_PROMISC failed, -110
[Tue Apr 27 17:38:09 2021] brcmfmac: brcmf_run_escan: error (-110)
[Tue Apr 27 17:38:09 2021] brcmfmac: brcmf_cfg80211_scan: scan error (-110)

参考