openwrt/package/kernel/mac80211/files/lib/netifd/wireless/mac80211.sh
Felix Fietkau 38587f87ed wifi: Introduce 802.11ac support
This patch introduces 802.11ac support to mac80211 and hostapd. The split of
VHT160 in two 80 MHz bands is not yet supported, since it requires an
additional user supplied parameter for the channel of the second band.

Signed-off-by: Matti Laakso <malaakso@elisanet.fi>
Signed-off-by: Simon Wunderlich <simon@open-mesh.com>
[sven@open-mesh.com: Rebased patch, merged htmode and vhtmode,
removed special hwmode, replaced uci vht_capab list with overwritable
autoconfig, fixed hostapd integration, fixed commit description, add HT40+/-
for VHT modes, add VHT40 center_freq autoconfig, refactored major parts]
Signed-off-by: Sven Eckelmann <sven@open-mesh.com>

SVN-Revision: 39456
2014-02-03 13:31:44 +00:00

612 lines
16 KiB
Bash

#!/bin/sh
. /lib/netifd/netifd-wireless.sh
. /lib/netifd/hostapd.sh
init_wireless_driver "$@"
MP_CONFIG_INT="mesh_retry_timeout mesh_confirm_timeout mesh_holding_timeout mesh_max_peer_links
mesh_max_retries mesh_ttl mesh_element_ttl mesh_hwmp_max_preq_retries
mesh_path_refresh_time mesh_min_discovery_timeout mesh_hwmp_active_path_timeout
mesh_hwmp_preq_min_interval mesh_hwmp_net_diameter_traversal_time mesh_hwmp_rootmode
mesh_hwmp_rann_interval mesh_gate_announcements mesh_sync_offset_max_neighor
mesh_rssi_threshold mesh_hwmp_active_path_to_root_timeout mesh_hwmp_root_interval
mesh_hwmp_confirmation_interval mesh_awake_window mesh_plink_timeout"
MP_CONFIG_BOOL="mesh_auto_open_plinks mesh_fwding"
MP_CONFIG_STRING="mesh_power_mode"
drv_mac80211_init_device_config() {
hostapd_common_add_device_config
config_add_string path phy macaddr
config_add_string hwmode
config_add_int beacon_int chanbw frag rts
config_add_int rxantenna txantenna antenna_gain txpower distance
config_add_boolean noscan
config_add_array ht_capab
config_add_boolean \
rxldpc \
short_gi_80 \
short_gi_160 \
tx_stbc_2by1 \
su_beamformer \
su_beamformee \
mu_beamformer \
mu_beamformee \
vht_txop_ps \
htc_vht \
rx_antenna_pattern \
tx_antenna_pattern
config_add_int vht_max_mpdu vht_max_rx_stbc vht_link_adapt vht160
}
drv_mac80211_init_iface_config() {
hostapd_common_add_bss_config
config_add_string macaddr ifname
config_add_boolean wds powersave
config_add_int maxassoc
config_add_int max_listen_int
config_add_int dtim_interval
# mesh
config_add_int $MP_CONFIG_INT
config_add_boolean $MP_CONFIG_BOOL
config_add_string $MP_CONFIG_STRING
}
mac80211_hostapd_setup_base() {
local phy="$1"
json_select config
[ "$auto_channel" -gt 0 ] && channel=acs_survey
[ "$enable_ht" -gt 0 ] && {
json_get_vars noscan htmode
json_get_values ht_capab_list ht_capab
append base_cfg "ieee80211n=1" "$N"
ht_capab=
case "$htmode" in
HT20|HT40-|HT40+) ht_capab="[$htmode]";;
VHT40|VHT80|VHT160)
case "$channel" in
36|44|52|60|100|108|116|124|132|140|149|157) ht_capab="[HT40+]";;
40|48|56|64|104|112|120|128|136|144|153|161) ht_capab="[HT40-]";;
esac
;;
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"
# 802.11ac
enable_ac=0
idx="$channel"
case "$htmode" in
VHT40)
case "$channel" in
36|40) idx=38;;
44|48) idx=42;;
52|56) idx=54;;
60|64) idx=58;;
100|104) idx=102;;
108|112) idx=110;;
116|120) idx=118;;
124|128) idx=126;;
132|136) idx=134;;
140|144) idx=142;;
149|153) idx=151;;
157|161) idx=159;;
esac
enable_ac=1
append base_cfg "vht_oper_chwidth=0" "$N"
append base_cfg "vht_oper_centr_freq_seg0_idx=$idx" "$N"
;;
VHT80)
case "$channel" in
36|40|44|48) idx=42;;
52|56|60|64) idx=58;;
100|104|108|112) idx=106;;
116|120|124|128) idx=122;;
132|136|140|144) idx=138;;
149|153|157|161) idx=155;;
esac
enable_ac=1
append base_cfg "vht_oper_chwidth=1" "$N"
append base_cfg "vht_oper_centr_freq_seg0_idx=$idx" "$N"
;;
VHT160)
case "$channel" in
36|40|44|48|52|56|60|64) idx=50;;
100|104|108|112|116|120|124|128) idx=114;;
esac
enable_ac=1
append base_cfg "vht_oper_chwidth=2" "$N"
append base_cfg "vht_oper_centr_freq_seg0_idx=$idx" "$N"
;;
esac
if [ "$enable_ac" != "0" ]; then
json_get_vars \
rxldpc:1 \
short_gi_80:1 \
short_gi_160:1 \
tx_stbc_2by1:1 \
su_beamformer:1 \
su_beamformee:1 \
mu_beamformer:1 \
mu_beamformee:1 \
vht_txop_ps:1 \
htc_vht:1 \
rx_antenna_pattern:1 \
tx_antenna_pattern:1 \
vht_max_mpdu:11454 \
vht_max_rx_stbc:4 \
vht_link_adapt:3 \
vht160:2
append base_cfg "ieee80211ac=1" "$N"
vht_capab=""
vht_cap=0
for cap in $(iw phy "$phy" info | awk -F "[()]" '/VHT Capabilities/ { print $2 }'); do
vht_cap="$(($vht_cap | $cap))"
done
# boolean
[ "$((($vht_cap & 16) * $rxldpc))" -eq 16 ] && \
vht_capab="$vht_capab[RXLDPC]"
[ "$((($vht_cap & 32) * $short_gi_80))" -eq 32 ] && \
vht_capab="$vht_capab[SHORT-GI-80]"
[ "$((($vht_cap & 64) * $short_gi_160))" -eq 64 ] && \
vht_capab="$vht_capab[SHORT-GI-160]"
[ "$((($vht_cap & 128) * $tx_stbc_2by1))" -eq 128 ] && \
vht_capab="$vht_capab[TX-STBC-2BY1]"
[ "$((($vht_cap & 2048) * $su_beamformer))" -eq 2048 ] && \
vht_capab="$vht_capab[SU-BEAMFORMER]"
[ "$((($vht_cap & 4096) * $su_beamformee))" -eq 4096 ] && \
vht_capab="$vht_capab[SU-BEAMFORMEE]"
[ "$((($vht_cap & 524288) * $mu_beamformer))" -eq 524288 ] && \
vht_capab="$vht_capab[MU-BEAMFORMER]"
[ "$((($vht_cap & 1048576) * $mu_beamformee))" -eq 1048576 ] && \
vht_capab="$vht_capab[MU-BEAMFORMEE]"
[ "$((($vht_cap & 2097152) * $vht_txop_ps))" -eq 2097152 ] && \
vht_capab="$vht_capab[VHT-TXOP-PS]"
[ "$((($vht_cap & 4194304) * $htc_vht))" -eq 4194304 ] && \
vht_capab="$vht_capab[HTC-VHT]"
[ "$((($vht_cap & 268435456) * $rx_antenna_pattern))" -eq 268435456 ] && \
vht_capab="$vht_capab[RX-ANTENNA-PATTERN]"
[ "$((($vht_cap & 536870912) * $tx_antenna_pattern))" -eq 536870912 ] && \
vht_capab="$vht_capab[TX-ANTENNA-PATTERN]"
# supported Channel widths
vht160_hw=0
[ "$(($vht_cap & 12))" -eq 4 -a 1 -le "$vht160" ] && \
vht160_hw=1
[ "$(($vht_cap & 12))" -eq 8 -a 2 -le "$vht160" ] && \
vht160_hw=2
[ "$vht160_hw" = 1 ] && vht_capab="$vht_capab[VHT160]"
[ "$vht160_hw" = 2 ] && vht_capab="$vht_capab[VHT160-80PLUS80]"
# maximum MPDU length
vht_max_mpdu_hw=3895
[ "$(($vht_cap & 3))" -ge 1 -a 7991 -le "$vht_max_mpdu" ] && \
vht_max_mpdu_hw=7991
[ "$(($vht_cap & 3))" -ge 2 -a 11454 -le "$vht_max_mpdu" ] && \
vht_max_mpdu_hw=11454
[ "$vht_max_mpdu_hw" != 3895 ] && \
vht_capab="$vht_capab[MAX-MPDU-$vht_max_mpdu_hw]"
# support for the reception of PPDUs using STBC
vht_max_rx_stbc_hw=0
[ "$(($vht_cap & 1792))" -ge 256 -a 1 -le "$vht_max_rx_stbc" ] && \
vht_max_rx_stbc_hw=1
[ "$(($vht_cap & 1792))" -ge 512 -a 2 -le "$vht_max_rx_stbc" ] && \
vht_max_rx_stbc_hw=2
[ "$(($vht_cap & 1792))" -ge 768 -a 3 -le "$vht_max_rx_stbc" ] && \
vht_max_rx_stbc_hw=3
[ "$(($vht_cap & 1792))" -ge 1024 -a 4 -le "$vht_max_rx_stbc" ] && \
vht_max_rx_stbc_hw=4
[ "$vht_max_rx_stbc_hw" = 1 ] && vht_capab="$vht_capab[RX-STBC-1]"
[ "$vht_max_rx_stbc_hw" = 2 ] && vht_capab="$vht_capab[RX-STBC-12]"
[ "$vht_max_rx_stbc_hw" = 3 ] && vht_capab="$vht_capab[RX-STBC-123]"
[ "$vht_max_rx_stbc_hw" = 4 ] && vht_capab="$vht_capab[RX-STBC-1234]"
# whether or not the STA supports link adaptation using VHT variant
vht_link_adapt_hw=0
[ "$(($vht_cap & 201326592))" -ge 134217728 -a 2 -le "$vht_link_adapt" ] && \
vht_link_adapt_hw=2
[ "$(($vht_cap & 201326592))" -ge 201326592 -a 3 -le "$vht_link_adapt" ] && \
vht_link_adapt_hw=3
[ "$vht_link_adapt_hw" != 0 ] && \
vht_capab="$vht_capab[VHT-LINK-ADAPT-$vht_link_adapt_hw]"
[ -n "$vht_capab" ] && append base_cfg "vht_capab=$vht_capab" "$N"
fi
}
hostapd_prepare_device_config "$hostapd_conf_file" nl80211
cat >> "$hostapd_conf_file" <<EOF
${channel:+channel=$channel}
${noscan:+noscan=$noscan}
$base_cfg
EOF
json_select ..
}
mac80211_hostapd_setup_bss() {
local phy="$1"
local ifname="$2"
local macaddr="$3"
local type="$4"
hostapd_cfg=
append hostapd_cfg "$type=$ifname" "$N"
hostapd_set_bss_options hostapd_cfg "$vif" || return 1
json_get_vars wds dtim_period max_listen_int
set_default wds 0
[ "$wds" -gt 0 ] && append hostapd_cfg "wds_sta=1" "$N"
[ "$staidx" -gt 0 ] && append hostapd_cfg "start_disabled=1" "$N"
cat >> /var/run/hostapd-$phy.conf <<EOF
$hostapd_cfg
bssid=$macaddr
${dtim_period:+dtim_period=$dtim_period}
${max_listen_int:+max_listen_interval=$max_listen_int}
EOF
}
mac80211_generate_mac() {
local phy="$1"
local id="${macidx:-0}"
local ref="$(cat /sys/class/ieee80211/${phy}/macaddress)"
local mask="$(cat /sys/class/ieee80211/${phy}/address_mask)"
[ "$mask" = "00:00:00:00:00:00" ] && mask="ff:ff:ff:ff:ff:ff";
local oIFS="$IFS"; IFS=":"; set -- $mask; IFS="$oIFS"
local mask1=$1
local mask6=$6
local oIFS="$IFS"; IFS=":"; set -- $ref; IFS="$oIFS"
macidx=$(($id + 1))
[ "$((0x$mask1))" -gt 0 ] && {
b1="0x$1"
[ "$id" -gt 0 ] && \
b1=$(($b1 ^ ((($id - 1) << 2) | 0x2)))
printf "%02x:%s:%s:%s:%s:%s" $b1 $2 $3 $4 $5 $6
return
}
[ "$((0x$mask6))" -lt 255 ] && {
printf "%s:%s:%s:%s:%s:%02x" $1 $2 $3 $4 $5 $(( 0x$6 ^ $id ))
return
}
off2=$(( (0x$6 + $id) / 0x100 ))
printf "%s:%s:%s:%s:%02x:%02x" \
$1 $2 $3 $4 \
$(( (0x$5 + $off2) % 0x100 )) \
$(( (0x$6 + $id) % 0x100 ))
}
find_phy() {
[ -n "$phy" -a -d /sys/class/ieee80211/$phy ] && return 0
[ -n "$path" -a -d "/sys/devices/$path/ieee80211" ] && {
phy="$(ls /sys/devices/$path/ieee80211 | grep -m 1 phy)"
[ -n "$phy" ] && return 0
}
[ -n "$macaddr" ] && {
for phy in $(ls /sys/class/ieee80211 2>/dev/null); do
grep -i -q "$macaddr" "/sys/class/ieee80211/${phy}/macaddress" && return 0
done
}
return 1
}
mac80211_check_ap() {
has_ap=1
}
mac80211_prepare_vif() {
json_select config
json_get_vars ifname mode ssid wds powersave macaddr
[ -n "$ifname" ] || ifname="wlan${phy#phy}${if_idx:+-$if_idx}"
if_idx=$((${if_idx:-0} + 1))
set_default wds 0
set_default powersave 0
json_select ..
[ -n "$macaddr" ] || {
macaddr="$(mac80211_generate_mac $phy)"
macidx="$(($macidx + 1))"
}
json_add_object data
json_add_string ifname "$ifname"
json_close_object
json_select config
# It is far easier to delete and create the desired interface
case "$mode" in
adhoc)
iw phy "$phy" interface add "$ifname" type adhoc
;;
ap)
# Hostapd will handle recreating the interface and
# subsequent virtual APs belonging to the same PHY
if [ -n "$hostapd_ctrl" ]; then
type=bss
else
type=interface
fi
mac80211_hostapd_setup_bss "$phy" "$ifname" "$macaddr" "$type" || return
[ -n "$hostapd_ctrl" ] || {
iw phy "$phy" interface add "$ifname" type managed
hostapd_ctrl="${hostapd_ctrl:-/var/run/hostapd/$ifname}"
}
;;
mesh)
json_get_vars key mesh_id
if [ -n "$key" ]; then
iw phy "$phy" interface add "$ifname" type mp
else
iw phy "$phy" interface add "$ifname" type mp mesh_id "$mesh_id"
fi
;;
monitor)
iw phy "$phy" interface add "$ifname" type monitor
;;
sta)
local wdsflag=
staidx="$(($staidx + 1))"
[ "$wds" -gt 0 ] && wdsflag="4addr on"
iw phy "$phy" interface add "$ifname" type managed $wdsflag
[ "$powersave" -gt 0 ] && powersave="on" || powersave="off"
iw "$ifname" set power_save "$powersave"
;;
esac
case "$mode" in
monitor|mesh)
[ "$auto_channel" -gt 0 ] || iw dev "$ifname" set channel "$channel" $htmode
;;
esac
if [ "$mode" != "ap" ]; then
# ALL ap functionality will be passed to hostapd
# All interfaces must have unique mac addresses
# which can either be explicitly set in the device
# section, or automatically generated
ifconfig "$ifname" hw ether "$macaddr"
fi
json_select ..
}
mac80211_setup_supplicant() {
wpa_supplicant_prepare_interface "$ifname" nl80211 || return 1
wpa_supplicant_add_network "$ifname"
wpa_supplicant_run "$ifname" ${hostapd_ctrl:+-H $hostapd_ctrl}
}
mac80211_setup_adhoc() {
json_get_vars bssid ssid key mcast_rate
keyspec=
[ "$auth_type" == "wep" ] && {
set_default key 1
case "$key" in
[1234])
local idx
for idx in 1 2 3 4; do
json_get_var ikey "key$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
}
brstr=
for br in $basic_rate_list; do
hostapd_add_rate brstr "$br"
done
mcval=
[ -n "$mcast_rate" ] && hostapd_add_rate mcval "$mcast_rate"
iw dev "$ifname" ibss join "$ssid" $freq $htmode fixed-freq $bssid \
${beacon_int:+beacon-interval $beacon_int} \
${brstr:+basic-rates $brstr} \
${mcval:+mcast-rate $mcval} \
${keyspec:+keys $keyspec}
}
mac80211_setup_vif() {
local name="$1"
json_select data
json_get_vars ifname
json_select ..
json_select config
json_get_vars mode
json_get_var vif_txpower txpower
ifconfig "$ifname" up || {
wireless_setup_vif_failed IFUP_ERROR
json_select ..
return
}
set_default vif_txpower "$txpower"
[ -z "$vif_txpower" ] || iw dev "$ifname" set txpower fixed "${vif_txpower%%.*}00"
case "$mode" in
mesh)
for var in $MP_CONFIG_INT $MP_CONFIG_BOOL $MP_CONFIG_STRING; do
json_get_var mp_val "$var"
[ -n "$mp_val" ] && iw dev "$ifname" set mesh_param "$var" "$mp_val"
done
# todo: authsae
;;
adhoc)
wireless_vif_parse_encryption
if [ "$wpa" -gt 0 -o "$auto_channel" -gt 0 ]; then
mac80211_setup_supplicant || failed=1
else
mac80211_setup_adhoc
fi
;;
sta)
mac80211_setup_supplicant || failed=1
;;
esac
json_select ..
[ -n "$failed" ] || wireless_add_vif "$name" "$ifname"
}
get_freq() {
local phy="$1"
local chan="$2"
iw "$phy" info | grep -E -m1 "(\* ${chan:-....} MHz${chan:+|\\[$chan\\]})" | grep MHz | awk '{print $2}'
}
mac80211_interface_cleanup() {
local phy="$1"
for wdev in $(list_phy_interfaces "$phy"); do
ifconfig "$wdev" down 2>/dev/null
iw dev "$wdev" del
done
}
drv_mac80211_cleanup() {
hostapd_common_cleanup
}
drv_mac80211_setup() {
json_select config
json_get_vars \
phy macaddr path \
country chanbw distance \
txpower antenna_gain \
rxantenna txantenna \
frag rts beacon_int
json_get_values basic_rate_list basic_rate
json_select ..
find_phy || {
echo "Could not find PHY for device '$1'"
wireless_set_retry 0
return 1
}
wireless_set_data phy="$phy"
mac80211_interface_cleanup "$phy"
# convert channel to frequency
[ "$auto_channel" -gt 0 ] || freq="$(get_freq "$phy" "$channel")"
[ -n "$country" ] && {
iw reg get | grep -q "^country $country:" || {
iw reg set "$country"
sleep 1
}
}
hostapd_conf_file="/var/run/hostapd-$phy.conf"
no_ap=1
macidx=0
staidx=0
[ -n "$chanbw" ] && {
for file in /sys/kernel/debug/ieee80211/$phy/ath9k/chanbw /sys/kernel/debug/ieee80211/$phy/ath5k/bwmode; do
[ -f "$file" ] && echo "$chanbw" > "$file"
done
}
set_default rxantenna all
set_default txantenna all
set_default distance 0
set_default antenna_gain 0
iw phy "$phy" set antenna $txantenna $rxantenna >/dev/null 2>&1
iw phy "$phy" set antenna_gain $antenna_gain
iw phy "$phy" set distance "$distance"
[ -n "$frag" ] && iw phy "$phy" set frag "${frag%%.*}"
[ -n "$rts" ] && iw phy "$phy" set rts "${rts%%.*}"
has_ap=
hostapd_ctrl=
for_each_interface "ap" mac80211_check_ap
rm -f "$hostapd_conf_file"
[ -n "$has_ap" ] && mac80211_hostapd_setup_base "$phy"
for_each_interface "sta adhoc mesh monitor" mac80211_prepare_vif
for_each_interface "ap" mac80211_prepare_vif
[ -n "$hostapd_ctrl" ] && {
/usr/sbin/hostapd -P /var/run/wifi-$phy.pid -B "$hostapd_conf_file"
ret="$?"
wireless_add_process "$(cat /var/run/wifi-$phy.pid)" "/usr/sbin/hostapd" 1
[ "$ret" != 0 ] && {
wireless_setup_failed HOSTAPD_START_FAILED
return
}
}
for_each_interface "ap sta adhoc mesh monitor" mac80211_setup_vif
wireless_set_up
}
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
}
drv_mac80211_teardown() {
wireless_process_kill_all
json_select data
json_get_vars phy
json_select ..
mac80211_interface_cleanup "$phy"
}
add_driver mac80211