diff options
Diffstat (limited to 'package/mac80211/files/lib/wifi')
| -rw-r--r-- | package/mac80211/files/lib/wifi/mac80211.sh | 599 |
1 files changed, 599 insertions, 0 deletions
diff --git a/package/mac80211/files/lib/wifi/mac80211.sh b/package/mac80211/files/lib/wifi/mac80211.sh new file mode 100644 index 000000000..1b0bea70e --- /dev/null +++ b/package/mac80211/files/lib/wifi/mac80211.sh @@ -0,0 +1,599 @@ +#!/bin/sh +append DRIVERS "mac80211" + +mac80211_hostapd_setup_base() { + local phy="$1" + local ifname="$2" + + cfgfile="/var/run/hostapd-$phy.conf" + macfile="/var/run/hostapd-$phy.maclist" + [ -e "$macfile" ] && rm -f "$macfile" + + config_get device "$vif" device + config_get country "$device" country + config_get hwmode "$device" hwmode + config_get channel "$device" channel + config_get beacon_int "$device" beacon_int + config_get basic_rate_list "$device" basic_rate + config_get_bool noscan "$device" noscan + config_get_bool short_preamble "$device" short_preamble "0" + + hostapd_set_log_options base_cfg "$device" + + [ -n "$channel" -a -z "$hwmode" ] && wifi_fixup_hwmode "$device" + + [ "$channel" = auto ] && { + channel=$(iw phy "$phy" info | \ + sed -ne '/MHz/ { /disabled\|passive\|radar/d; s/.*\[//; s/\].*//; p; q }') + config_set "$device" channel "$channel" + } + + [ -n "$hwmode" ] && { + config_get hwmode_11n "$device" hwmode_11n + [ -n "$hwmode_11n" ] && { + hwmode="$hwmode_11n" + append base_cfg "ieee80211n=1" "$N" + config_get htmode "$device" htmode + config_get ht_capab_list "$device" ht_capab + case "$htmode" in + HT20|HT40+|HT40-) ht_capab="[$htmode]";; + *)ht_capab=;; + esac + for cap in $ht_capab_list; do + ht_capab="$ht_capab[$cap]" + done + [ -n "$ht_capab" ] && append base_cfg "ht_capab=$ht_capab" "$N" + } + } + + local country_ie=0 + [ -n "$country" ] && country_ie=1 + config_get_bool country_ie "$device" country_ie "$country_ie" + [ "$country_ie" -gt 0 ] && append base_cfg "ieee80211d=1" "$N" + + config_get macfilter "$vif" macfilter + case "$macfilter" in + allow) + append base_cfg "macaddr_acl=1" "$N" + append base_cfg "accept_mac_file=$macfile" "$N" + ;; + deny) + append base_cfg "macaddr_acl=0" "$N" + append base_cfg "deny_mac_file=$macfile" "$N" + ;; + esac + config_get maclist "$vif" maclist + [ -n "$maclist" ] && { + for mac in $maclist; do + echo "$mac" >> $macfile + done + } + + local br brval brstr + [ -n "$basic_rate_list" ] && { + for br in $basic_rate_list; do + brval="$(($br / 100))" + [ -n "$brstr" ] && brstr="$brstr " + brstr="$brstr$brval" + done + } + + append base_cfg "preamble=$short_preamble" "$N" + + cat >> "$cfgfile" <<EOF +ctrl_interface=/var/run/hostapd-$phy +driver=nl80211 +wmm_ac_bk_cwmin=4 +wmm_ac_bk_cwmax=10 +wmm_ac_bk_aifs=7 +wmm_ac_bk_txop_limit=0 +wmm_ac_bk_acm=0 +wmm_ac_be_aifs=3 +wmm_ac_be_cwmin=4 +wmm_ac_be_cwmax=10 +wmm_ac_be_txop_limit=0 +wmm_ac_be_acm=0 +wmm_ac_vi_aifs=2 +wmm_ac_vi_cwmin=3 +wmm_ac_vi_cwmax=4 +wmm_ac_vi_txop_limit=94 +wmm_ac_vi_acm=0 +wmm_ac_vo_aifs=2 +wmm_ac_vo_cwmin=2 +wmm_ac_vo_cwmax=3 +wmm_ac_vo_txop_limit=47 +wmm_ac_vo_acm=0 +tx_queue_data3_aifs=7 +tx_queue_data3_cwmin=15 +tx_queue_data3_cwmax=1023 +tx_queue_data3_burst=0 +tx_queue_data2_aifs=3 +tx_queue_data2_cwmin=15 +tx_queue_data2_cwmax=63 +tx_queue_data2_burst=0 +tx_queue_data1_aifs=1 +tx_queue_data1_cwmin=7 +tx_queue_data1_cwmax=15 +tx_queue_data1_burst=3.0 +tx_queue_data0_aifs=1 +tx_queue_data0_cwmin=3 +tx_queue_data0_cwmax=7 +tx_queue_data0_burst=1.5 +${hwmode:+hw_mode=$hwmode} +${channel:+channel=$channel} +${beacon_int:+beacon_int=$beacon_int} +${country:+country_code=$country} +${noscan:+noscan=$noscan} +${brstr:+basic_rates=$brstr} +$base_cfg + +EOF +} + +mac80211_hostapd_setup_bss() { + local phy="$1" + local vif="$2" + + hostapd_cfg= + cfgfile="/var/run/hostapd-$phy.conf" + config_get ifname "$vif" ifname + + if [ -f "$cfgfile" ]; then + append hostapd_cfg "bss=$ifname" "$N" + else + mac80211_hostapd_setup_base "$phy" "$ifname" + append hostapd_cfg "interface=$ifname" "$N" + fi + + local net_cfg bridge + net_cfg="$(find_net_config "$vif")" + [ -z "$net_cfg" ] || bridge="$(bridge_interface "$net_cfg")" + config_set "$vif" bridge "$bridge" + + hostapd_set_bss_options hostapd_cfg "$vif" + + config_get_bool wds "$vif" wds 0 + [ "$wds" -gt 0 ] && append hostapd_cfg "wds_sta=1" "$N" + + local macaddr hidden maxassoc wmm + config_get macaddr "$vif" macaddr + config_get maxassoc "$vif" maxassoc + config_get dtim_period "$vif" dtim_period + config_get max_listen_int "$vif" max_listen_int + config_get_bool hidden "$vif" hidden 0 + config_get_bool wmm "$vif" wmm 1 + cat >> /var/run/hostapd-$phy.conf <<EOF +$hostapd_cfg +wmm_enabled=$wmm +bssid=$macaddr +ignore_broadcast_ssid=$hidden +${dtim_period:+dtim_period=$dtim_period} +${max_listen_int:+max_listen_interval=$max_listen_int} +${maxassoc:+max_num_sta=$maxassoc} +EOF +} + +mac80211_start_vif() { + local vif="$1" + local ifname="$2" + + local net_cfg + net_cfg="$(find_net_config "$vif")" + [ -z "$net_cfg" ] || start_net "$ifname" "$net_cfg" + + set_wifi_up "$vif" "$ifname" +} + +find_mac80211_phy() { + local device="$1" + + local macaddr="$(config_get "$device" macaddr | tr 'A-Z' 'a-z')" + config_get phy "$device" phy + [ -z "$phy" -a -n "$macaddr" ] && { + for phy in $(ls /sys/class/ieee80211 2>/dev/null); do + [ "$macaddr" = "$(cat /sys/class/ieee80211/${phy}/macaddress)" ] || continue + config_set "$device" phy "$phy" + break + done + config_get phy "$device" phy + } + [ -n "$phy" -a -d "/sys/class/ieee80211/$phy" ] || { + echo "PHY for wifi device $1 not found" + return 1 + } + [ -z "$macaddr" ] && { + config_set "$device" macaddr "$(cat /sys/class/ieee80211/${phy}/macaddress)" + } + return 0 +} + +scan_mac80211() { + local device="$1" + local adhoc sta ap monitor mesh disabled + + config_get vifs "$device" vifs + for vif in $vifs; do + config_get_bool disabled "$vif" disabled 0 + [ $disabled = 0 ] || continue + + config_get mode "$vif" mode + case "$mode" in + adhoc|sta|ap|monitor|mesh) + append $mode "$vif" + ;; + *) echo "$device($vif): Invalid mode, ignored."; continue;; + esac + done + + config_set "$device" vifs "${ap:+$ap }${adhoc:+$adhoc }${sta:+$sta }${monitor:+$monitor }${mesh:+$mesh}" +} + +list_phy_interfaces() { + local phy="$1" + if [ -d "/sys/class/ieee80211/${phy}/device/net" ]; then + ls "/sys/class/ieee80211/${phy}/device/net" 2>/dev/null; + else + ls "/sys/class/ieee80211/${phy}/device" 2>/dev/null | grep net: | sed -e 's,net:,,g' + fi +} + +disable_mac80211() ( + local device="$1" + + find_mac80211_phy "$device" || return 0 + config_get phy "$device" phy + + set_wifi_down "$device" + # kill all running hostapd and wpa_supplicant processes that + # are running on atheros/mac80211 vifs + for pid in `pidof hostapd`; do + grep -E "$phy" /proc/$pid/cmdline >/dev/null && \ + kill $pid + done + + include /lib/network + for wdev in $(list_phy_interfaces "$phy"); do + [ -f "/var/run/$wdev.pid" ] && kill $(cat /var/run/$wdev.pid) >&/dev/null 2>&1 + for pid in `pidof wpa_supplicant`; do + grep "$wdev" /proc/$pid/cmdline >/dev/null && \ + kill $pid + done + ifconfig "$wdev" down 2>/dev/null + unbridge "$dev" + iw dev "$wdev" del + done + + return 0 +) + +get_freq() { + local phy="$1" + local chan="$2" + iw "$phy" info | grep -E -m1 "(\* ${chan:-....} MHz${chan:+|\\[$chan\\]})" | grep MHz | awk '{print $2}' +} + +mac80211_generate_mac() { + local off="$1" + local mac="$2" + local oIFS="$IFS"; IFS=":"; set -- $mac; IFS="$oIFS" + + local b2mask=0x00 + [ $off -gt 0 ] && b2mask=0x02 + + printf "%02x:%s:%s:%s:%02x:%02x" \ + $(( 0x$1 | $b2mask )) $2 $3 $4 \ + $(( (0x$5 + ($off / 0x100)) % 0x100 )) \ + $(( (0x$6 + $off) % 0x100 )) +} + +enable_mac80211() { + local device="$1" + config_get channel "$device" channel + config_get vifs "$device" vifs + config_get txpower "$device" txpower + config_get country "$device" country + config_get distance "$device" distance + config_get txantenna "$device" txantenna all + config_get rxantenna "$device" rxantenna all + config_get antenna_gain "$device" antenna_gain 0 + config_get frag "$device" frag + config_get rts "$device" rts + find_mac80211_phy "$device" || return 0 + config_get phy "$device" phy + local i=0 + local macidx=0 + local apidx=0 + fixed="" + local hostapd_ctrl="" + + [ -n "$country" ] && { + iw reg get | grep -q "^country $country:" || { + iw reg set "$country" + sleep 1 + } + } + + config_get chanbw "$device" chanbw + [ -n "$chanbw" -a -d /sys/kernel/debug/ieee80211/$phy/ath9k ] && echo "$chanbw" > /sys/kernel/debug/ieee80211/$phy/ath9k/chanbw + [ -n "$chanbw" -a -d /sys/kernel/debug/ieee80211/$phy/ath5k ] && echo "$chanbw" > /sys/kernel/debug/ieee80211/$phy/ath5k/bwmode + + [ "$channel" = "auto" -o "$channel" = "0" ] || { + fixed=1 + } + + iw phy "$phy" set antenna $txantenna $rxantenna >/dev/null 2>&1 + iw phy "$phy" set antenna_gain $antenna_gain + + [ -n "$distance" ] && iw phy "$phy" set distance "$distance" + [ -n "$frag" ] && iw phy "$phy" set frag "${frag%%.*}" + [ -n "$rts" ] && iw phy "$phy" set rts "${rts%%.*}" + + export channel fixed + # convert channel to frequency + local freq="$(get_freq "$phy" "${fixed:+$channel}")" + + wifi_fixup_hwmode "$device" "g" + for vif in $vifs; do + config_get ifname "$vif" ifname + [ -n "$ifname" ] || { + [ $i -gt 0 ] && ifname="wlan${phy#phy}-$i" || ifname="wlan${phy#phy}" + } + config_set "$vif" ifname "$ifname" + + config_get mode "$vif" mode + config_get ssid "$vif" ssid + + # It is far easier to delete and create the desired interface + case "$mode" in + adhoc) + iw phy "$phy" interface add "$ifname" type adhoc + ;; + ap) + # Hostapd will handle recreating the interface and + # it's accompanying monitor + apidx="$(($apidx + 1))" + [ "$apidx" -gt 1 ] || iw phy "$phy" interface add "$ifname" type managed + ;; + mesh) + config_get mesh_id "$vif" mesh_id + iw phy "$phy" interface add "$ifname" type mp mesh_id "$mesh_id" + ;; + monitor) + iw phy "$phy" interface add "$ifname" type monitor + ;; + sta) + local wdsflag + config_get_bool wds "$vif" wds 0 + [ "$wds" -gt 0 ] && wdsflag="4addr on" + iw phy "$phy" interface add "$ifname" type managed $wdsflag + config_get_bool powersave "$vif" powersave 0 + [ "$powersave" -gt 0 ] && powersave="on" || powersave="off" + iw "$ifname" set power_save "$powersave" + ;; + esac + + # All interfaces must have unique mac addresses + # which can either be explicitly set in the device + # section, or automatically generated + config_get macaddr "$device" macaddr + config_get vif_mac "$vif" macaddr + [ -n "$vif_mac" ] || { + vif_mac="$(mac80211_generate_mac $macidx $macaddr)" + macidx="$(($macidx + 1))" + } + [ "$mode" = "ap" ] || ifconfig "$ifname" hw ether "$vif_mac" + config_set "$vif" macaddr "$vif_mac" + + # !! ap !! + # + # ALL ap functionality will be passed to hostapd + # + # !! station !! + # + # ALL station functionality will be passed to wpa_supplicant + # + if [ ! "$mode" = "ap" ]; then + # We attempt to set the channel for all interfaces, although + # mac80211 may not support it or the driver might not yet + # for ap mode this is handled by hostapd + [ -n "$fixed" -a -n "$channel" ] && iw dev "$ifname" set channel "$channel" + fi + + i=$(($i + 1)) + done + + local start_hostapd= + rm -f /var/run/hostapd-$phy.conf + for vif in $vifs; do + config_get mode "$vif" mode + [ "$mode" = "ap" ] || continue + mac80211_hostapd_setup_bss "$phy" "$vif" + start_hostapd=1 + done + + [ -n "$start_hostapd" ] && { + hostapd -P /var/run/wifi-$phy.pid -B /var/run/hostapd-$phy.conf || { + echo "Failed to start hostapd for $phy" + return + } + sleep 2 + + for vif in $vifs; do + config_get mode "$vif" mode + config_get ifname "$vif" ifname + [ "$mode" = "ap" ] || continue + hostapd_ctrl="${hostapd_ctrl:-/var/run/hostapd-$phy/$ifname}" + mac80211_start_vif "$vif" "$ifname" + done + } + + for vif in $vifs; do + config_get mode "$vif" mode + config_get ifname "$vif" ifname + [ "$mode" = "ap" ] || ifconfig "$ifname" up + + config_get vif_txpower "$vif" txpower + # use vif_txpower (from wifi-iface) to override txpower (from + # wifi-device) if the latter doesn't exist + txpower="${txpower:-$vif_txpower}" + [ -z "$txpower" ] || iw dev "$ifname" set txpower fixed "${txpower%%.*}00" + + case "$mode" in + adhoc) + config_get bssid "$vif" bssid + config_get ssid "$vif" ssid + config_get beacon_int "$device" beacon_int + config_get basic_rate_list "$device" basic_rate + config_get encryption "$vif" encryption + config_get key "$vif" key 1 + config_get mcast_rate "$vif" mcast_rate + config_get htmode "$device" htmode + case "$htmode" in + HT20|HT40+|HT40-) ;; + *) htmode= ;; + esac + + + local keyspec="" + [ "$encryption" == "psk" -o "$encryption" == "psk2" ] && { + if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then + wpa_supplicant_setup_vif "$vif" nl80211 "${hostapd_ctrl:+-H $hostapd_ctrl}" $freq $htmode || { + echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2 + # make sure this wifi interface won't accidentally stay open without encryption + ifconfig "$ifname" down + } + # wpa_supplicant will bring the iface up + continue + fi + } + + [ "$encryption" == "wep" ] && { + case "$key" in + [1234]) + local idx + for idx in 1 2 3 4; do + local ikey + config_get ikey "$vif" "key$idx" + + [ -n "$ikey" ] && { + ikey="$(($idx - 1)):$(prepare_key_wep "$ikey")" + [ $idx -eq $key ] && ikey="d:$ikey" + append keyspec "$ikey" + } + done + ;; + *) append keyspec "d:0:$(prepare_key_wep "$key")" ;; + esac + } + + local br brval brsub brstr + [ -n "$basic_rate_list" ] && { + for br in $basic_rate_list; do + brval="$(($br / 1000))" + brsub="$((($br / 100) % 10))" + [ "$brsub" -gt 0 ] && brval="$brval.$brsub" + [ -n "$brstr" ] && brstr="$brstr," + brstr="$brstr$brval" + done + } + + local mcval="" + [ -n "$mcast_rate" ] && { + mcval="$(($mcast_rate / 1000))" + mcsub="$(( ($mcast_rate / 100) % 10 ))" + [ "$mcsub" -gt 0 ] && mcval="$mcval.$mcsub" + } + + iw dev "$ifname" ibss join "$ssid" $freq $htmode \ + ${fixed:+fixed-freq} $bssid \ + ${beacon_int:+beacon-interval $beacon_int} \ + ${brstr:+basic-rates $brstr} \ + ${mcval:+mcast-rate $mcval} \ + ${keyspec:+keys $keyspec} + ;; + sta) + if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then + wpa_supplicant_setup_vif "$vif" nl80211 "${hostapd_ctrl:+-H $hostapd_ctrl}" || { + echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2 + # make sure this wifi interface won't accidentally stay open without encryption + ifconfig "$ifname" down + continue + } + fi + ;; + esac + [ "$mode" = "ap" ] || mac80211_start_vif "$vif" "$ifname" + done + +} + + +check_mac80211_device() { + config_get phy "$1" phy + [ -z "$phy" ] && { + find_mac80211_phy "$1" >/dev/null || return 0 + config_get phy "$1" phy + } + [ "$phy" = "$dev" ] && found=1 +} + +detect_mac80211() { + devidx=0 + config_load wireless + while :; do + config_get type "radio$devidx" type + [ -n "$type" ] || break + devidx=$(($devidx + 1)) + done + for dev in $(ls /sys/class/ieee80211); do + found=0 + config_foreach check_mac80211_device wifi-device + [ "$found" -gt 0 ] && continue + + mode_11n="" + mode_band="g" + channel="11" + ht_cap=0 + for cap in $(iw phy "$dev" info | grep 'Capabilities:' | cut -d: -f2); do + ht_cap="$(($ht_cap | $cap))" + done + ht_capab=""; + [ "$ht_cap" -gt 0 ] && { + mode_11n="n" + append ht_capab " option htmode HT20" "$N" + + list=" list ht_capab" + [ "$(($ht_cap & 1))" -eq 1 ] && append ht_capab "$list LDPC" "$N" + [ "$(($ht_cap & 16))" -eq 16 ] && append ht_capab "$list GF" "$N" + [ "$(($ht_cap & 32))" -eq 32 ] && append ht_capab "$list SHORT-GI-20" "$N" + [ "$(($ht_cap & 64))" -eq 64 ] && append ht_capab "$list SHORT-GI-40" "$N" + [ "$(($ht_cap & 128))" -eq 128 ] && append ht_capab "$list TX-STBC" "$N" + [ "$(($ht_cap & 768))" -eq 256 ] && append ht_capab "$list RX-STBC1" "$N" + [ "$(($ht_cap & 768))" -eq 512 ] && append ht_capab "$list RX-STBC12" "$N" + [ "$(($ht_cap & 768))" -eq 768 ] && append ht_capab "$list RX-STBC123" "$N" + [ "$(($ht_cap & 4096))" -eq 4096 ] && append ht_capab "$list DSSS_CCK-40" "$N" + } + iw phy "$dev" info | grep -q '2412 MHz' || { mode_band="a"; channel="36"; } + + cat <<EOF +config wifi-device radio$devidx + option type mac80211 + option channel ${channel} + option macaddr $(cat /sys/class/ieee80211/${dev}/macaddress) + option hwmode 11${mode_11n}${mode_band} +$ht_capab + # REMOVE THIS LINE TO ENABLE WIFI: + option disabled 1 + +config wifi-iface + option device radio$devidx + option network lan + option mode ap + option ssid OpenWrt + option encryption none + +EOF + devidx=$(($devidx + 1)) + done +} + |