LinkIt Smart 7688 Wi-Fi multi-role Configuration Update

LinkIt Smart 7688 Wi-Fi multi-role Configuration Update Readme.md

Steps for Configuring the Multimode WiFi on LinkIt Smart 7688

1. Log Into the LinkIt Smart 7688 One can connect to the LinkIt Smart via AP interface or via USB to Serial. See the user manual

2. Copy the file ralink.sh to /lib/netifd/wireless/ralink.sh on the LinkIt Smart 7688 One can copy the file via SCP from the host machine. Or connecting a usb flash drive to the host port.

3. Give the Command to make this file executiable:

`chmod +x /lib/netifd/wireless/ralink.sh`

4. Enter the WiFi Station Credentials:

a. Replace `<SSID>` with the Wi-Fi router's name which you want to connect to.

   `uci set wireless.sta.ssid="<SSID>"`

b. Replace `<KEY>` with the password of the above Wi-Fi router's password.

  `uci set wireless.sta.key="<KEY>"`

c. Set encryption type to WPA-PSK2 = `psk2` else if WPA-PSK = `psk`

  `uci set wireless.sta.encryption="psk2"`

d. Enable Wi-Fi station mode.

  `uci set wireless.sta.disabled="0"`

e. Apply the configuration to the system

  `uci commit`

f. Re-boot the WiFi service

  `wifi`

Note: In case you have an MAC ID protected router then use the MAC ID for the apcli0 interface. One can obtain the MAC ID by giving the command ifconfig apcli0

ralink.sh

#!/bin/sh
. /lib/netifd/netifd-wireless.sh

init_wireless_driver "$@"
maclist=""
force_channel=""

drv_ralink_init_device_config() {
	config_add_string country variant log_level short_preamble
	config_add_boolean noscan
	config_add_int channel
}

drv_ralink_init_iface_config() {
	config_add_string 'auth_server:host'
	config_add_string auth_secret
	config_add_int 'auth_port:port'

	config_add_string ifname apname mode ssid encryption key key1 key2 key3 key4 wps_pushbutton macfilter led
        config_add_boolean hidden isolate
        config_add_array 'maclist:list(macaddr)'
}

drv_ralink_cleanup() {
	logger drv_ralink_cleanup
}

ralink_setup_ap(){
	local name="$1"
	local eap=0

	json_select config
	json_get_vars mode ifname ssid encryption key key1 key2 key3 key4 wps_pushbutton server port hidden isolate macfilter
	json_get_values maclist maclist

	ifconfig $ifname up

	[ -z "$force_channel" ] || iwpriv $ifname set Channel=$force_channel
	[ "$isolate" = 1 ] || isolate=0
	iwpriv $ifname set NoForwarding=$isolate
	iwpriv $ifname set NoForwardingBTNBSSID=$isolate
	iwpriv $ifname set NoForwardingMBCast=$isolate
	
	[ "$hidden" = 1 ] || hidden=0
	iwpriv $ifname set HideSSID=$hidden

	wsc_methods=0
	wsc_mode=0
	case "$encryption" in
	psk*|mixed*)
		local enc="WPA2PSK"
		case "$encryption" in
			psk | psk+*) enc=WPAPSK;;
			psk2 | psk2*) enc=WPA2PSK;;
			mixed*) enc=WPAPSKWPA2PSK;;
			wpa | wpa+*) eap=1; enc=WPA;;
			wpa2*) eap=1; enc=WPA2;;
		esac
		local crypto="AES"
		case "$encryption" in
			*tkip+aes*) crypto=TKIPAES;;
			*tkip*) crypto=TKIP;;
		esac
		[ "$eap" = "1" ] && {
			iwpriv $ifname set RADIUS_Server=$server
			iwpriv $ifname set RADIUS_Port=$port
			iwpriv $ifname set RADIUS_Key=$key
			iwpriv $ifname set own_ip_addr=192.168.1.1
			iwpriv $ifname set IEEE8021X=0
			iwpriv $ifname set EAPifname=eth0.2
			iwpriv $ifname set PreAuthIfname=br-lan
		}
		iwpriv $ifname set AuthMode=$enc
		iwpriv $ifname set EncrypType=$crypto
		iwpriv $ifname set IEEE8021X=0
		iwpriv $ifname set "SSID=${ssid}"
		[ "$eap" = "1" ] || iwpriv $ifname set "WPAPSK=${key}"
		iwpriv $ifname set DefaultKeyID=2
		iwpriv $ifname set "SSID=${ssid}"
		if [ "$wps_pushbutton" == "1" ]; then
			wsc_methods=128
			wsc_mode=7
		fi
		;;
	wep)
		iwpriv $ifname set AuthMode=WEPAUTO
		iwpriv $ifname set EncrypType=WEP
		iwpriv $ifname set IEEE8021X=0
		for idx in 1 2 3 4; do
			json_get_var keyn key${idx}
			[ -n "$keyn" ] && iwpriv $ifname set "Key${idx}=${keyn}"
		done
		iwpriv $ifname set DefaultKeyID=${key}
		iwpriv $ifname set "SSID=${ssid}"
		;;
	none)
		iwpriv $ifname set "SSID=${ssid}"
		;;
	esac

	iwpriv $ifname set WscConfMode=$wsc_mode
	iwpriv $ifname set WscConfStatus=2
	iwpriv $ifname set WscMode=2
	iwpriv $ifname set ACLClearAll=1
	[ -n "$maclist" ] && {
		for m in ${maclist}; do
			logger iwpriv $ifname set ACLAddEntry="$m"
			iwpriv $ifname set ACLAddEntry="$m"
		done
	}
	case "$macfilter" in
	allow)
		iwpriv $ifname set AccessPolicy=1
		;;
	deny)
		iwpriv $ifname set AccessPolicy=2
		;;
	*)
		iwpriv $ifname set AccessPolicy=0
		;;
	esac
	json_select ..


	wireless_add_vif "$name" "$ifname"
}

ralink_setup_sta(){
	local name="$1"

	json_select config
	json_get_vars mode apname ifname ssid encryption key key1 key2 key3 key4 wps_pushbutton disabled led

	[ "$disabled" = "1" ] && return

	key=
	case "$encryption" in
		psk*|mixed*) json_get_vars key;;
		wep) json_get_var key key1;;
	esac
	json_select ..

	/sbin/ap_client "ra0" "$ifname" "${ssid}" "${key}" "${led}"
	sleep 1
	wireless_add_process "$(cat /tmp/apcli-${ifname}.pid)" /sbin/ap_client ra0 "$ifname" "${ssid}" "${key}" "${led}"

	wireless_add_vif "$name" "$ifname"
}

drv_ralink_setup() {
	local ifname="$1"
	local bcn_active=0
	wmode=9
	VHT=0
	VHT_SGI=0
	HT=0
	EXTCHA=0

	sta_disabled="$(uci get wireless.sta.disabled)"
	sta_disabled=1

	[ "${sta_disabled}" = "1" ] && bcn_active=1

	json_select config
	json_get_vars variant country channel htmode log_level short_preamble noscan:0
	json_select ..

	[ "$short_preamble" = 1 ] || short_preamble=0 

	case ${htmode:-none} in
	HT20)
		wmode=10
		HT=0
		;;
	HT40)
		wmode=10
		HT=1
		EXTCHA=1
		;;
	VHT20)
		wmode=15
		HT=0
		VHT=0
		VHT_SGI=1
		;;
	VHT40)
		wmode=15
		HT=1
		VHT=0
		VHT_SGI=1
		EXTCHA=1
		;;
	VHT80)
		wmode=15
		HT=1
		VHT=1
		VHT_SGI=1
		EXTCHA=1
		;;
	*)
		case $hwmode in
		a) wmode=2;;
		g) wmode=3;;
		esac
		;;
	esac

	if [ "$auto_channel" -gt 0 ]; then
		force_channel=""
		channel=0
		auto_channel=3
	else
		force_channel=$channel
		auto_channel=0
	fi

	coex=1
	[ "$noscan" -gt 0 ] && coex=0

	cat /etc/Wireless/${variant}_tpl.dat > /tmp/${variant}.dat
	cat >> /tmp/${variant}.dat<<EOF
Beacon=${bcn_active}
BssidNum=4
HT_BW=${HT:-0}
HT_EXTCHA=${EXTCHA:-0}
CountryCode=${country}
WirelessMode=${wmode:-9}
Channel=${channel:-8}
AutoChannelSelect=$auto_channel
Debug=${log_level:-3}
SSID1=${ssid:-OpenWrt}
HT_BSSCoexistence=$coex
WscConfMethods=680
EOF
	for_each_interface "ap" ralink_setup_ap
	for_each_interface "sta" ralink_setup_sta
	wireless_set_up
	LED="$(uci get wireless.sta.led)"
	sta_disabled="$(uci get wireless.sta.disabled)"
	sta_disabled=1
	[ "${sta_disabled}" = "1" -a -n "${LED}" -a -f /sys/class/leds/${LED}/trigger ] && ap_client ${LED} set
}

ralink_teardown() {
	json_select config
	json_get_vars ifname
	json_select ..

	ifconfig $ifname down

	LED="$(uci get wireless.sta.led)"
	[ -n "${LED}" -a -f /sys/class/leds/${LED}/trigger ] && ap_client ${LED} clear
}

drv_ralink_teardown() {
	wireless_process_kill_all
	for_each_interface "ap sta" ralink_teardown
}

add_driver ralink