492 lines
12 KiB
Bash
492 lines
12 KiB
Bash
#!/bin/sh
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append DRIVERS "mac80211"
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mac80211_hostapd_setup_base() {
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local phy="$1"
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local ifname="$2"
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cfgfile="/var/run/hostapd-$phy.conf"
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config_get device "$vif" device
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config_get country "$device" country
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config_get hwmode "$device" hwmode
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config_get channel "$device" channel
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[ -n "$channel" -a -z "$hwmode" ] && wifi_fixup_hwmode "$device"
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[ "$channel" = auto ] && channel=
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[ -n "$hwmode" ] && {
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config_get hwmode_11n "$device" hwmode_11n
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[ -n "$hwmode_11n" ] && {
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hwmode="$hwmode_11n"
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append base_cfg "ieee80211n=1" "$N"
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config_get htmode "$device" htmode
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config_get ht_capab_list "$device" ht_capab
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case "$htmode" in
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HT20|HT40+|HT40-) ht_capab="[$htmode]";;
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*)ht_capab=;;
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esac
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for cap in $ht_capab_list; do
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ht_capab="$ht_capab[$cap]"
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done
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[ -n "$ht_capab" ] && append base_cfg "ht_capab=$ht_capab" "$N"
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}
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}
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cat > "$cfgfile" <<EOF
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ctrl_interface=/var/run/hostapd-$phy
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driver=nl80211
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wmm_ac_bk_cwmin=4
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wmm_ac_bk_cwmax=10
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wmm_ac_bk_aifs=7
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wmm_ac_bk_txop_limit=0
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wmm_ac_bk_acm=0
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wmm_ac_be_aifs=3
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wmm_ac_be_cwmin=4
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wmm_ac_be_cwmax=10
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wmm_ac_be_txop_limit=0
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wmm_ac_be_acm=0
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wmm_ac_vi_aifs=2
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wmm_ac_vi_cwmin=3
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wmm_ac_vi_cwmax=4
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wmm_ac_vi_txop_limit=94
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wmm_ac_vi_acm=0
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wmm_ac_vo_aifs=2
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wmm_ac_vo_cwmin=2
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wmm_ac_vo_cwmax=3
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wmm_ac_vo_txop_limit=47
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wmm_ac_vo_acm=0
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tx_queue_data3_aifs=7
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tx_queue_data3_cwmin=15
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tx_queue_data3_cwmax=1023
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tx_queue_data3_burst=0
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tx_queue_data2_aifs=3
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tx_queue_data2_cwmin=15
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tx_queue_data2_cwmax=63
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tx_queue_data2_burst=0
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tx_queue_data1_aifs=1
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tx_queue_data1_cwmin=7
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tx_queue_data1_cwmax=15
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tx_queue_data1_burst=3.0
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tx_queue_data0_aifs=1
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tx_queue_data0_cwmin=3
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tx_queue_data0_cwmax=7
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tx_queue_data0_burst=1.5
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${hwmode:+hw_mode=$hwmode}
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${channel:+channel=$channel}
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${country:+country_code=$country}
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$base_cfg
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EOF
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}
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mac80211_hostapd_setup_bss() {
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local phy="$1"
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local vif="$2"
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hostapd_cfg=
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cfgfile="/var/run/hostapd-$phy.conf"
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config_get ifname "$vif" ifname
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if [ -f "$cfgfile" ]; then
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append hostapd_cfg "bss=$ifname" "$N"
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else
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mac80211_hostapd_setup_base "$phy" "$ifname"
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append hostapd_cfg "interface=$ifname" "$N"
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fi
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local net_cfg bridge
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net_cfg="$(find_net_config "$vif")"
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[ -z "$net_cfg" ] || bridge="$(bridge_interface "$net_cfg")"
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config_set "$vif" bridge "$bridge"
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hostapd_set_bss_options hostapd_cfg "$vif"
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config_get_bool wds "$vif" wds 0
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[ "$wds" -gt 0 ] && append hostapd_cfg "wds_sta=1" "$N"
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config_get macaddr "$vif" macaddr
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config_get_bool hidden "$vif" hidden 0
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cat >> /var/run/hostapd-$phy.conf <<EOF
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$hostapd_cfg
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wmm_enabled=1
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bssid=$macaddr
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ignore_broadcast_ssid=$hidden
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EOF
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}
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mac80211_start_vif() {
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local vif="$1"
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local ifname="$2"
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local net_cfg
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net_cfg="$(find_net_config "$vif")"
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[ -z "$net_cfg" ] || start_net "$ifname" "$net_cfg"
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set_wifi_up "$vif" "$ifname"
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}
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find_mac80211_phy() {
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local 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 -E "($phy|wlan)" /proc/$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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[ -f "/var/run/$wdev.pid" ] && kill $(cat /var/run/$wdev.pid) >&/dev/null 2>&1
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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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config_get country "$device" country
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config_get distance "$device" distance
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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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local macidx=0
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local apidx=0
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fixed=""
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[ -n "$country" ] && iw reg set "$country"
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[ "$channel" = "auto" -o "$channel" = "0" ] || {
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fixed=1
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}
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[ -n "$distance" ] && iw phy "$phy" set distance "$distance"
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export channel fixed
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# convert channel to frequency
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local freq="$(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 "$ifname" type adhoc
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;;
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ap)
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# Hostapd will handle recreating the interface and
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# it's accompanying monitor
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apidx="$(($apidx + 1))"
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[ "$apidx" -gt 1 ] || 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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local wdsflag
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config_get_bool wds "$vif" wds 0
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[ "$wds" -gt 0 ] && wdsflag="4addr on"
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iw phy "$phy" interface add "$ifname" type managed $wdsflag
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config_get_bool powersave "$vif" powersave 0
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[ "$powersave" -gt 0 ] && powersave="on" || powersave="off"
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iwconfig "$ifname" power "$powersave"
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;;
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esac
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# All interfaces must have unique mac addresses
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# which can either be explicitly set in the device
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# section, or automatically generated
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config_get macaddr "$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 [ "$macidx" -gt 0 ]; then
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offset="$(( 2 + $macidx * 4 ))"
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else
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offset="0"
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fi
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vif_mac="$( printf %02x $((0x$mac_1 + $offset)) ):$mac_2"
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macidx="$(($macidx + 1))"
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}
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[ "$mode" = "ap" ] || ifconfig "$ifname" hw ether "$vif_mac"
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config_set "$vif" macaddr "$vif_mac"
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# Valid values are:
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# wpa / wep / none
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#
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# !! ap !!
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#
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# ALL ap functionality will be passed to hostapd
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#
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# !! mesh / adhoc / station !!
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# none -> NO encryption
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#
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# wep + keymgmt = '' -> we use iw to connect to the
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# network.
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#
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# wep + keymgmt = 'NONE' -> wpa_supplicant will be
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# configured to handle the wep connection
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if [ ! "$mode" = "ap" ]; then
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# We attempt to set the channel for all interfaces, although
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# mac80211 may not support it or the driver might not yet
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# for ap mode this is handled by hostapd
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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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case "$enc" in
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*wep*)
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config_get keymgmt "$vif" keymgmt
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if [ -z "$keymgmt" ]; then
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config_get key "$vif" key
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key="${key:-1}"
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case "$key" in
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[1234])
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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 ckey "$vif" "key${idx}"
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if [ -n "$ckey" ]; then
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[ $idx -eq $key ] && zidx="d:${zidx}"
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append keystring "${zidx}:$(prepare_key_wep "$ckey")"
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fi
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done
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;;
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*)
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keystring="d:0:$(prepare_key_wep "$key")"
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;;
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esac
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fi
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;;
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*psk*|*wpa*)
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config_get key "$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 "$phy" set rts "${rts%%.*}"
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fi
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ifconfig "$ifname" up
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[ "$mode" = "ap" ] || mac80211_start_vif "$vif" "$ifname"
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case "$mode" in
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adhoc)
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config_get bssid "$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 "$enc" in
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*wep*)
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if [ -z "$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*|*psk*)
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config_get key "$vif" key
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if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
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wpa_supplicant_setup_vif "$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} $bssid
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;;
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esac
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;;
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esac
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done
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local start_hostapd=
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rm -f /var/run/hostapd-$phy.conf
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for vif in $vifs; do
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config_get mode "$vif" mode
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[ "$mode" = "ap" ] || continue
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mac80211_hostapd_setup_bss "$phy" "$vif"
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start_hostapd=1
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done
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[ -n "$start_hostapd" ] || return 0
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hostapd -P /var/run/wifi-$phy.pid -B /var/run/hostapd-$phy.conf || {
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echo "Failed to start hostapd for $phy"
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return
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}
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sleep 2
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for vif in $vifs; do
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config_get mode "$vif" mode
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config_get ifname "$vif" ifname
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[ "$mode" = "ap" ] || continue
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mac80211_start_vif "$vif" "$ifname"
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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" >/dev/null || return 0
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config_get phy "$1" phy
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}
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[ "$phy" = "$dev" ] && found=1
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}
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detect_mac80211() {
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devidx=0
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config_load wireless
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while :; do
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config_get type "radio$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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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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mode_11n=""
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mode_band="g"
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channel="5"
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ht_cap=0
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for cap in $(iw phy "$dev" info | grep 'Capabilities:' | cut -d: -f2); do
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ht_cap="$(($ht_cap | $cap))"
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done
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ht_capab="";
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[ "$ht_cap" -gt 0 ] && {
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mode_11n="n"
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append ht_capab " option htmode HT20" "$N"
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list=" list ht_capab"
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[ "$(($ht_cap & 1))" -eq 1 ] && append ht_capab "$list LDPC" "$N"
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[ "$(($ht_cap & 32))" -eq 32 ] && append ht_capab "$list SHORT-GI-20" "$N"
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[ "$(($ht_cap & 64))" -eq 64 ] && append ht_capab "$list SHORT-GI-40" "$N"
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[ "$(($ht_cap & 4096))" -eq 4096 ] && append ht_capab "$list DSSS_CCK-40" "$N"
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}
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iw phy "$dev" info | grep -q '2412 MHz' || { mode_band="a"; channel="36"; }
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cat <<EOF
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config wifi-device radio$devidx
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option type mac80211
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option channel ${channel}
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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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$ht_capab
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# REMOVE THIS LINE TO ENABLE WIFI:
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option disabled 1
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config wifi-iface
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option device radio$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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devidx=$(($devidx + 1))
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done
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}
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