通过同一个 WiFi 适配器连接无线 DSL

Question

valid interface combinations:  
     * #{ managed } <= 2048, #{ AP, mesh point } <= 8, #{ P2P-client, P2P-GO } <= 1,  
       total <= 2048, #channels <= 1, STA/AP BI must match  
     * #{ WDS } <= 2048,  
       total <= 2048, #channels <= 1, STA/AP BI must match

上面的输出显示 AP 和站通道必须一致：要么

#channels <= 1

或者

STA/AP BI must match

意思是一样的，即 Station 和 AP 信道必须匹配。因此您不能随意指定任何频道hostapd.conf文件，您必须确保文件中的频道与您已通过管理（或者车站，同样的事情）界面。

至于接口名称，由于某种原因，我现在无法hostapd使用诸如新0和新1，但如果我使用wlan0和WLAN1一切正常，正如我的帖子所述。

下面有一个简单的 bash 脚本可以为您完成此操作：

#!/bin/bash

#      If you need to debug, uncomment the following statement
#set -x
#      and comment out the "exec" statement.

[ "$USER" != "root" ] && exec sudo $0 "$@"
exec 2>/var/log/$(basename $0).log

if [ $# != 2 ]; then
    echo "Usage $0 interface action"
    echo "where interface is the name of the wireless interface to be used"
    echo "and action is one of start/stop "
    exit 1
fi 


MY_IF=$1
HPID=/tmp/host$USER.pid
DPID=/tmp/dnsm$USER.pid
WPID=/tmp/wpas$USER.pid

[ -x /usr/bin/srm ] && RM=/usr/bin/srm || RM="/bin/rm -f"

stop() {

        kill -9 $(cat $HPID)
        kill -9 $(cat $DPID)
        dhclient -r
        kill -9 $(cat $WPID)
        rm /tmp/*.my_conf
        rm /tmp/*$USER.pid
        iw dev wlan1 del
        ip link set dev $MY_IF down
        ip addr flush dev $MY_IF
        ip link set dev $MY_IF up
        iptables -t nat -D POSTROUTING -o $MY_IF -j MASQUERADE
        service network-manager start
}


my_exit() {

case $1 in
    2)
        echo "wpa_supplicant failed" >>&2 
        ;;
    3)
        echo "dhclient failed" >>&2 
        ;;
    4)
        echo "hostapd failed" >>&2 
        ;;
    5)
        echo "dnsmasq failed" >>&2 
            ;;
esac
    stop >>&2
    exit $1

}



start() {
    service network-manager stop
    iw phy phy0 interface add wlan1 type __ap

    ip addr flush dev $MY_IF
    ip link set dev $MY_IF up
    ip link set dev wlan1 up

    pkill -9 wpa_supplicant
    MYSECRET=$(mktemp /tmp/XXXXXX.my_conf)

    echo -e "Please enter BSSID and Password of the Wifi network which\n"
    echo -e "you wish to connect to:"
    read BSSID PASSWORD
    wpa_passphrase $BSSID $PASSWORD > $MYSECRET 
    wpa_supplicant -B -i $MY_IF -c $MYSECRET -Dnl80211 -P $WPID 1> /dev/null 
    EXIT_CODE=$?
    $RM $MYSECRET
    [[ $EXIT_CODE == 0 ]] && : || my_exit 2 


    pkill -9 dhclient
    dhclient $MY_IF
    [[ $EXIT_CODE == 0 ]] && : || my_exit 3 

    MYTEMPH=$(mktemp /tmp/XXXXXX.my_conf)
    MYTEMPD=$(mktemp /tmp/XXXXXX.my_conf)

    cat > $MYTEMPH <<EOF
interface=wlan1
driver=nl80211
logger_syslog=-1
logger_syslog_level=2
logger_stdout=-1
logger_stdout_level=2
ssid=wtf
hw_mode=g
channel=3
macaddr_acl=0
auth_algs=3
ignore_broadcast_ssid=0
eap_server=0
wpa=2
wpa_passphrase=12345678
wpa_pairwise=TKIP CCMP
rsn_pairwise=TKIP CCMP
EOF
    pkill -9 hostapd
    /usr/sbin/hostapd -B -P $HPID $MYTEMPH 1> /dev/null
    sleep  3
    ps ax | grep hostapd | grep -v grep >/dev/null
    if [[ ! $? == 0  ]]; then 
        /usr/sbin/hostapd -B -P $HPID $MYTEMPH 1> /dev/null
    fi
    [[ $? == 0 ]] && : || my_exit 4


    echo 1 >/proc/sys/net/ipv4/ip_forward


    ip addr add 10.111.113.1/24 dev wlan1
    cat > $MYTEMPD <<EOF
domain-needed
bogus-priv
dhcp-authoritative
no-dhcp-interface=$MY_IF
no-dhcp-interface=lo
interface=wlan1
server=8.8.8.8
server=8.8.4.4
expand-hosts
dhcp-range=10.111.113.2,10.111.113.100,12h
EOF
    pkill -9 dnsmasq
    dnsmasq  -C $MYTEMPD -x $DPID
    [[ $? == 0 ]] && : || my_exit 5
    iptables -t nat -A POSTROUTING -o $MY_IF -j MASQUERADE

}



case $2 in
        start)
            stop >>&2
            start
            ;;
        stop)
            stop
            ;;
        *) 
            echo "Usage $0 interface action"
            echo "where interface is the name of the wireless interface to be used"
            echo "and action is one of start/stop "
            ;;

esac

确保渠道hostapd.conf 里面上面的脚本（行通道=3）与您要连接的 AP 相匹配。我有不是左上角设置-x，它允许您在脚本执行过程中查看错误（如果有）：如果您需要进行一些调试，您可以联合国评论它。我无法做出hostapd，当从上述脚本调用时，可以使用除country_code=us，但你可能更幸运。另外，我的版本hostapd每次都会失败，因此我添加了一个条件来测试hostapd是否正在运行，并尝试恰好再一次使其开始。

Answer 1

valid interface combinations:  
     * #{ managed } <= 2048, #{ AP, mesh point } <= 8, #{ P2P-client, P2P-GO } <= 1,  
       total <= 2048, #channels <= 1, STA/AP BI must match  
     * #{ WDS } <= 2048,  
       total <= 2048, #channels <= 1, STA/AP BI must match