319 lines
7.8 KiB
Bash
319 lines
7.8 KiB
Bash
#!/bin/sh
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append DRIVERS "mac80211"
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find_mac80211_phy() {
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config_get device "$1"
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local macaddr="$(config_get "$device" macaddr | tr 'A-Z' 'a-z')"
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config_get phy "$device" phy
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[ -z "$phy" -a -n "$macaddr" ] && {
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for phy in $(ls /sys/class/ieee80211 2>/dev/null); do
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[ "$macaddr" = "$(cat /sys/class/ieee80211/${phy}/macaddress)" ] || continue
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config_set "$device" phy "$phy"
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break
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done
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config_get phy "$device" phy
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}
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[ -n "$phy" -a -d "/sys/class/ieee80211/$phy" ] || {
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echo "PHY for wifi device $1 not found"
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return 1
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}
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[ -z "$macaddr" ] && {
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config_set "$device" macaddr "$(cat /sys/class/ieee80211/${phy}/macaddress)"
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}
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return 0
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}
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scan_mac80211() {
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local device="$1"
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local adhoc sta ap monitor mesh
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config_get vifs "$device" vifs
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for vif in $vifs; do
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config_get mode "$vif" mode
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case "$mode" in
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adhoc|sta|ap|monitor|mesh)
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append $mode "$vif"
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;;
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*) echo "$device($vif): Invalid mode, ignored."; continue;;
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esac
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done
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config_set "$device" vifs "${ap:+$ap }${adhoc:+$adhoc }${sta:+$sta }${monitor:+$monitor }${mesh:+$mesh}"
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}
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disable_mac80211() (
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local device="$1"
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find_mac80211_phy "$device" || return 0
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config_get phy "$device" phy
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set_wifi_down "$device"
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# kill all running hostapd and wpa_supplicant processes that
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# are running on atheros/mac80211 vifs
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for pid in `pidof hostapd wpa_supplicant`; do
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grep wlan /proc/$pid/cmdline >/dev/null && \
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kill $pid
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done
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include /lib/network
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for wdev in $(ls /sys/class/ieee80211/${phy}/device/net 2>/dev/null); do
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ifconfig "$wdev" down 2>/dev/null
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unbridge "$dev"
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iw dev "$wdev" del
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done
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return 0
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)
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get_freq() {
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local phy="$1"
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local chan="$2"
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iw "$phy" info | grep -E -m1 "(\* ${chan:-....} MHz${chan:+|\\[$chan\\]})" | grep MHz | awk '{print $2}'
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}
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enable_mac80211() {
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local device="$1"
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config_get channel "$device" channel
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config_get vifs "$device" vifs
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config_get txpower "$device" txpower
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find_mac80211_phy "$device" || return 0
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config_get phy "$device" phy
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local i=0
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fixed=""
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[ "$channel" = "auto" -o "$channel" = "0" ] || {
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fixed=1
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}
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export channel fixed
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# convert channel to frequency
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local freq="$(get_freq "$phy" "${fixed:+$channel}")"
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wifi_fixup_hwmode "$device" "g"
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for vif in $vifs; do
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while [ -d "/sys/class/net/wlan$i" ]; do
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i=$(($i + 1))
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done
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config_get ifname "$vif" ifname
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[ -n "$ifname" ] || {
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ifname="wlan$i"
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}
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config_set "$vif" ifname "$ifname"
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config_get enc "$vif" encryption
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config_get mode "$vif" mode
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config_get ssid "$vif" ssid
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# It is far easier to delete and create the desired interface
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case "$mode" in
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adhoc)
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iw phy "$phy" interface add "$ifname" type adhoc
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;;
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ap)
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# Hostapd will handle recreating the interface and
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# it's accompanying monitor
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iw phy "$phy" interface add "$ifname" type managed
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;;
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mesh)
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config_get mesh_id "$vif" mesh_id
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iw phy "$phy" interface add "$ifname" type mp mesh_id "$mesh_id"
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;;
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monitor)
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iw phy "$phy" interface add "$ifname" type monitor
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;;
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sta)
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iw phy "$phy" interface add "$ifname" type managed
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;;
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esac
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# All interfaces must have unique mac addresses
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# which can either be explicitly set in the device
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# section, or automatically generated
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config_get macaddr "$device" macaddr
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local mac_1="${macaddr%%:*}"
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local mac_2="${macaddr#*:}"
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config_get vif_mac "$vif" macaddr
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[ -n "$vif_mac" ] || {
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if [ "$i" -gt 0 ]; then
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offset="$(( 2 + $i * 4 ))"
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else
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offset="0"
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fi
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vif_mac="$( printf %02x $(($mac_1 + $offset)) ):$mac_2"
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}
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ifconfig "$ifname" hw ether "$vif_mac"
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# We attempt to set teh channel for all interfaces, although
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# mac80211 may not support it or the driver might not yet
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[ -n "$fixed" -a -n "$channel" ] && iw dev "$ifname" set channel "$channel"
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local key keystring
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# Valid values are:
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# wpa / wep / none
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#
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# !! ap !!
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#
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# ALL ap functionality will be passed to hostapd
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#
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# !! mesh / adhoc / station !!
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# none -> NO encryption
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#
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# wep + keymgmt = '' -> we use iw to connect to the
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# network.
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#
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# wep + keymgmt = 'NONE' -> wpa_supplicant will be
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# configured to handle the wep connection
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if [ ! "$mode" = "ap" ]; then
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case "$enc" in
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wep)
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config_get keymgmt "$vif" keymgmt
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if [ -e "$keymgmt" ]; then
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for idx in 1 2 3 4; do
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local zidx
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zidx = idx - 1
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config_get key "$vif" "key${idx}"
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if [ -n "$key" ]; then
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append keystring "${zidx}:${key} "
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fi
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done
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fi
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;;
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wpa)
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config_get key "$vif" key
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;;
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esac
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fi
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# txpower is not yet implemented in iw
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config_get vif_txpower "$vif" txpower
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# use vif_txpower (from wifi-iface) to override txpower (from
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# wifi-device) if the latter doesn't exist
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txpower="${txpower:-$vif_txpower}"
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[ -z "$txpower" ] || iwconfig "$ifname" txpower "${txpower%%.*}"
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config_get frag "$vif" frag
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if [ -n "$frag" ]; then
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iw phy "$phy" set frag "${frag%%.*}"
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fi
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config_get rts "$vif" rts
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if [ -n "$rts" ]; then
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iw phy "$phy" set rts "${frag%%.*}"
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fi
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ifconfig "$ifname" up
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local net_cfg bridge
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net_cfg="$(find_net_config "$vif")"
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[ -z "$net_cfg" ] || {
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bridge="$(bridge_interface "$net_cfg")"
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config_set "$vif" bridge "$bridge"
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start_net "$ifname" "$net_cfg"
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}
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set_wifi_up "$vif" "$ifname"
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case "$mode" in
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ap)
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if eval "type hostapd_setup_vif" 2>/dev/null >/dev/null; then
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hostapd_setup_vif "$vif" nl80211 || {
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echo "enable_mac80211($device): Failed to set up wpa for interface $ifname" >&2
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# make sure this wifi interface won't accidentally stay open without encryption
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ifconfig "$ifname" down
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continue
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}
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fi
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;;
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adhoc)
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config_get bssid "$vif" bssid
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iw dev "$ifname" ibss join "$ssid" $freq ${fixed:+fixed-freq} $bssid
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;;
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sta|mesh)
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config_get bssid "$vif" bssid
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case "$enc" in
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wep)
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if [ -e "$keymgmt" ]; then
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[ -n "$keystring" ] &&
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iw dev "$ifname" connect "$ssid" ${fixed:+$freq} $bssid key "$keystring"
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else
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if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
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wpa_supplicant_setup_vif "$vif" wext || {
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echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2
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# make sure this wifi interface won't accidentally stay open without encryption
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ifconfig "$ifname" down
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continue
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}
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fi
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fi
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;;
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wpa)
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if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
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wpa_supplicant_setup_vif "$vif" wext || {
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echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2
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# make sure this wifi interface won't accidentally stay open without encryption
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ifconfig "$ifname" down
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continue
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}
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fi
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;;
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*)
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iw dev "$ifname" connect "$ssid" ${fixed:+$freq} $bssid
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;;
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esac
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;;
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esac
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done
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}
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check_device() {
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config_get phy "$1" phy
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[ -z "$phy" ] && {
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find_mac80211_phy "$1" || return 0
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config_get phy "$1" phy
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}
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[ "$phy" = "$dev" ] && found=1
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}
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detect_mac80211() {
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devidx=0
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config_load wireless
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for dev in $(ls /sys/class/ieee80211); do
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found=0
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config_foreach check_device wifi-device
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[ "$found" -gt 0 ] && continue
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while :; do
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config_get type "wifi$devidx" type
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[ -n "$type" ] || break
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devidx=$(($devidx + 1))
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done
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mode_11n=""
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mode_band="g"
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iw phy "$dev" info | grep -q 'HT cap' && mode_11n="n"
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iw phy "$dev" info | grep -q '2412 MHz' || mode_band="a"
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cat <<EOF
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config wifi-device wifi$devidx
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option type mac80211
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option channel 5
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option macaddr $(cat /sys/class/ieee80211/${dev}/macaddress)
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option hwmode 11${mode_11n}${mode_band}
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# REMOVE THIS LINE TO ENABLE WIFI:
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option disabled 1
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config wifi-iface
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option device wifi$devidx
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option network lan
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option mode ap
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option ssid OpenWrt
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option encryption none
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EOF
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done
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}
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