116 lines
4.0 KiB
Plaintext
116 lines
4.0 KiB
Plaintext
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# Function
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The simwifi can provides host Settings for sim wifi on nuttx sim emulator.
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The script sim_wifi.sh supports two modes that simulate wifi, HWSIM and RNC
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(real network card).
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- In the HWSIM mode, we simulates two wlan interfaces. The wlan0 is STA and
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the wlan1 is AP. The wlan0 can connect to the wlan1 in the nuttx simulator.
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- In the RNC mode, we can use the same wlan interface name on the nuttx simulator
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to control the connection behavior of the real wireless card.
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# Config
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Before using the Sim WiFi function, we need to perform the following
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configurations:
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- nuttx
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SIM_NETDEV_NUMBER=3
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SIM_WIFIDEV_NUMBER=2
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SIM_NETDEV_TAP=y
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DRIVERS_IEEE80211=y
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NETDEV_WIRELESS_HANDLER=y
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- apps
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WIRELESS_WAPI_CMDTOOL=y
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SYSTEM_DHCPC_RENEW=y
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NETUTILS_DHCPD=y
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# Using
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We can use the './tools/simwifi/sim_wifi.sh help' command to view the commands
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provided by the sim_wifi.sh script and the results are as follows.
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sim_wifi.sh (rename <old> <new> |
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init <wan> <mode> |clean |
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start_wpa <wlan0> |stop_wpa |
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start_hostapd <wlan0> |stop_hostapd |
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start_udhcpc <wlan0> |stop_udhcpc |
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start_dhcp <wlan0> |stop_dhcp |
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start_hwsim |stop_hwsim |up_hwsim |
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start_net <wlan0> |stop_net <wlan0> |
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start_sta <wlan0> |stop_sta |
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start_ap <wlan0> [eth0] |stop_ap <wlan0> [eth0] |
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start_bridge <eth0> |stop_bridge <eth0> |
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show | help)
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- Init the simwifi, the command format is as follows:
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sudo ./tools/simwifi/sim_wifi.sh init <wan> <mode>
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The <wan> is the name of the interface for accessing the Internet.
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The <mode> is the simwifi mode, HWSIM and RNC.
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Setting HWSIM:
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sudo ./tools/simwifi/sim_wifi.sh init eno1 HWSIM
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Setting RNC:
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sudo ./tools/simwifi/sim_wifi.sh init eno1 RNC
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- In HWSIM mode:
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Start the hwsim services, the command is as follows.
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sudo ./tools/simwifi/sim_wifi.sh start_hwsim
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Stop the hwsim services, the command is as follows
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sudo ./tools/simwifi/sim_wifi.sh stop_hwsim
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- In RNC mode:
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Maybe the real wireless card name format is not wlanx, in this case
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we need to change it to wlanx format. The command is as follows
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sudo simwifi rename <old_name> wlanx
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* Set the real wireless network card to STA mode.
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sudo ./tools/simwifi/sim_wifi.sh start_sta wlan0
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* Set the real wireless network card to AP mode.
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sudo ./tools/simwifi/sim_wifi.sh start_ap wlan0
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Finally we can clean up all the files, configurations and services of the simwifi.
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sudo ./tools/simwifi/sim_wifi.sh clean
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# Location problems
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We can use the following command to locate the problem and display the
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status.
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cmd: sudo ./tools/simwifi/sim_wifi.sh show
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log:
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/var/run/simwifi
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dnsmasq.conf hostapd simwifi.log udhcpc.script wpa_supplicant.pid
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dnsmasq.leases hostapd.conf simwifi.state wpa_supplicant
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dnsmasq.pid simwifi.conf udhcpc.pid wpa_supplicant.conf
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services list
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root 1880671 2046 0 10月10 ? 00:00:00 /usr/sbin/wpa_supplicant -B -c /var/run/simwifi/wpa_supplicant.conf -iwlan0 -P /var/run/simwifi/wpa_supplicant.pid
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nobody 1880680 2046 0 10月10 ? 00:00:00 /usr/sbin/dnsmasq -inuttx0 -C /var/run/simwifi/dnsmasq.conf --log-debug -x /var/run/simwifi/dnsmasq.pid
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root 1880672 2046 0 10月10 ? 00:00:00 /usr/sbin/udhcpc -i wlan0 -p /var/run/simwifi/udhcpc.pid -s /var/run/simwifi/udhcpc.script
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bridge nuttx0
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222: tap0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master nuttx0 state UNKNOWN mode DEFAULT group default qlen 1000
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link/ether 2e:b0:bc:79:41:02 brd ff:ff:ff:ff:ff:ff
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223: tap1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop master nuttx0 state DOWN mode DEFAULT group default qlen 1000
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link/ether a6:33:96:26:a4:1d brd ff:ff:ff:ff:ff:ff
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default config
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defwan:eno1
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mode:rnc
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state:SW_STA
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wlan:wlan0
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br:nuttx0
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default via 10.221.127.254 dev eno1 proto dhcp metric 100
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10.0.1.0/24 dev nuttx0 proto kernel scope link src 10.0.1.1
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10.221.96.0/19 dev eno1 proto kernel scope link src 10.221.108.5 metric 100
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