2 .
/lib
/netifd
/netifd-wireless.sh
3 .
/lib
/netifd
/hostapd.sh
5 init_wireless_driver
"$@"
7 MP_CONFIG_INT
="mesh_retry_timeout mesh_confirm_timeout mesh_holding_timeout mesh_max_peer_links
8 mesh_max_retries mesh_ttl mesh_element_ttl mesh_hwmp_max_preq_retries
9 mesh_path_refresh_time mesh_min_discovery_timeout mesh_hwmp_active_path_timeout
10 mesh_hwmp_preq_min_interval mesh_hwmp_net_diameter_traversal_time mesh_hwmp_rootmode
11 mesh_hwmp_rann_interval mesh_gate_announcements mesh_sync_offset_max_neighor
12 mesh_rssi_threshold mesh_hwmp_active_path_to_root_timeout mesh_hwmp_root_interval
13 mesh_hwmp_confirmation_interval mesh_awake_window mesh_plink_timeout"
14 MP_CONFIG_BOOL
="mesh_auto_open_plinks mesh_fwding"
15 MP_CONFIG_STRING
="mesh_power_mode"
18 command iw $@ || logger
-t mac80211
"Failed command: iw $@"
21 drv_mac80211_init_device_config
() {
22 hostapd_common_add_device_config
24 config_add_string path phy
'macaddr:macaddr'
25 config_add_string hwmode
26 config_add_int beacon_int chanbw frag rts
27 config_add_int rxantenna txantenna antenna_gain txpower distance
28 config_add_boolean noscan ht_coex
29 config_add_array ht_capab
30 config_add_array channels
44 config_add_int vht_max_a_mpdu_len_exp vht_max_mpdu vht_link_adapt vht160 rx_stbc tx_stbc
54 drv_mac80211_init_iface_config
() {
55 hostapd_common_add_bss_config
57 config_add_string
'macaddr:macaddr' ifname
59 config_add_boolean wds powersave
60 config_add_int maxassoc
61 config_add_int max_listen_int
62 config_add_int dtim_period
63 config_add_int start_disabled
66 config_add_string mesh_id
67 config_add_int
$MP_CONFIG_INT
68 config_add_boolean
$MP_CONFIG_BOOL
69 config_add_string
$MP_CONFIG_STRING
72 mac80211_add_capabilities
() {
73 local __var
="$1"; shift
74 local __mask
="$1"; shift
82 [ "$(($4))" -gt 0 ] ||
continue
83 [ "$(($__mask & $2))" -eq "$((${3:-$2}))" ] ||
continue
88 export -n -- "$__var=$__out"
91 mac80211_hostapd_setup_base
() {
96 [ "$auto_channel" -gt 0 ] && channel
=acs_survey
97 [ "$auto_channel" -gt 0 ] && json_get_values channel_list channels
99 json_get_vars noscan ht_coex
100 json_get_values ht_capab_list ht_capab
102 [ -n "$noscan" -a "$noscan" -gt 0 ] && hostapd_noscan
=1
108 HT40
*|VHT40|VHT80|VHT160
)
111 case "$(( ($channel / 4) % 2 ))" in
112 1) ht_capab
="[HT40+]";;
113 0) ht_capab
="[HT40-]";;
118 HT40
+) ht_capab
="[HT40+]";;
119 HT40-
) ht_capab
="[HT40-]";;
121 if [ "$channel" -lt 7 ]; then
130 [ "$auto_channel" -gt 0 ] && ht_capab
="[HT40+]"
135 [ -n "$ieee80211n" ] && {
136 append base_cfg
"ieee80211n=1" "$N"
138 set_default ht_coex
0
139 append base_cfg
"ht_coex=$ht_coex" "$N"
152 for cap
in $
(iw phy
"$phy" info |
grep 'Capabilities:' | cut
-d: -f2); do
153 ht_cap_mask
="$(($ht_cap_mask | $cap))"
156 cap_rx_stbc
=$
((($ht_cap_mask >> 8) & 3))
157 [ "$rx_stbc" -lt "$cap_rx_stbc" ] && cap_rx_stbc
="$rx_stbc"
158 ht_cap_mask
="$(( ($ht_cap_mask & ~(0x300)) | ($cap_rx_stbc << 8) ))"
160 mac80211_add_capabilities ht_capab_flags
$ht_cap_mask \
162 GF
:0x10::$greenfield \
163 SHORT-GI-20
:0x20::$short_gi_20 \
164 SHORT-GI-40
:0x40::$short_gi_40 \
165 TX-STBC
:0x80::$tx_stbc \
166 RX-STBC1
:0x300:0x100:1 \
167 RX-STBC12
:0x300:0x200:1 \
168 RX-STBC123
:0x300:0x300:1 \
169 MAX-AMSDU-7935
:0x800::$max_amsdu \
170 DSSS_CCK-40
:0x1000::$dsss_cck_40
172 ht_capab
="$ht_capab$ht_capab_flags"
173 [ -n "$ht_capab" ] && append base_cfg
"ht_capab=$ht_capab" "$N"
182 case "$(( ($channel / 4) % 2 ))" in
183 1) idx
=$
(($channel + 2));;
184 0) idx
=$
(($channel - 2));;
187 append base_cfg
"vht_oper_chwidth=0" "$N"
188 append base_cfg
"vht_oper_centr_freq_seg0_idx=$idx" "$N"
191 case "$(( ($channel / 4) % 4 ))" in
192 1) idx
=$
(($channel + 6));;
193 2) idx
=$
(($channel + 2));;
194 3) idx
=$
(($channel - 2));;
195 0) idx
=$
(($channel - 6));;
198 append base_cfg
"vht_oper_chwidth=1" "$N"
199 append base_cfg
"vht_oper_centr_freq_seg0_idx=$idx" "$N"
203 36|
40|
44|
48|
52|
56|
60|
64) idx
=50;;
204 100|
104|
108|
112|
116|
120|
124|
128) idx
=114;;
207 append base_cfg
"vht_oper_chwidth=2" "$N"
208 append base_cfg
"vht_oper_centr_freq_seg0_idx=$idx" "$N"
212 if [ "$enable_ac" != "0" ]; then
224 rx_antenna_pattern
:1 \
225 tx_antenna_pattern
:1 \
226 vht_max_a_mpdu_len_exp
:7 \
232 append base_cfg
"ieee80211ac=1" "$N"
234 for cap
in $
(iw phy
"$phy" info |
awk -F "[()]" '/VHT Capabilities/ { print $2 }'); do
235 vht_cap
="$(($vht_cap | $cap))"
238 cap_rx_stbc
=$
((($vht_cap >> 8) & 7))
239 [ "$rx_stbc" -lt "$cap_rx_stbc" ] && cap_rx_stbc
="$rx_stbc"
240 vht_cap
="$(( ($vht_cap & ~(0x700)) | ($cap_rx_stbc << 8) ))"
242 mac80211_add_capabilities vht_capab
$vht_cap \
243 RXLDPC
:0x10::$rxldpc \
244 SHORT-GI-80
:0x20::$short_gi_80 \
245 SHORT-GI-160
:0x40::$short_gi_160 \
246 TX-STBC-2BY1
:0x80::$tx_stbc_2by1 \
247 SU-BEAMFORMER
:0x800::$su_beamformer \
248 SU-BEAMFORMEE
:0x1000::$su_beamformee \
249 MU-BEAMFORMER
:0x80000::$mu_beamformer \
250 MU-BEAMFORMEE
:0x100000::$mu_beamformee \
251 VHT-TXOP-PS
:0x200000::$vht_txop_ps \
252 HTC-VHT
:0x400000::$htc_vht \
253 RX-ANTENNA-PATTERN
:0x10000000::$rx_antenna_pattern \
254 TX-ANTENNA-PATTERN
:0x20000000::$tx_antenna_pattern \
255 RX-STBC-1
:0x700:0x100:1 \
256 RX-STBC-12
:0x700:0x200:1 \
257 RX-STBC-123
:0x700:0x300:1 \
258 RX-STBC-1234
:0x700:0x400:1 \
260 # supported Channel widths
262 [ "$(($vht_cap & 12))" -eq 4 -a 1 -le "$vht160" ] && \
264 [ "$(($vht_cap & 12))" -eq 8 -a 2 -le "$vht160" ] && \
266 [ "$vht160_hw" = 1 ] && vht_capab
="$vht_capab[VHT160]"
267 [ "$vht160_hw" = 2 ] && vht_capab
="$vht_capab[VHT160-80PLUS80]"
269 # maximum MPDU length
271 [ "$(($vht_cap & 3))" -ge 1 -a 7991 -le "$vht_max_mpdu" ] && \
273 [ "$(($vht_cap & 3))" -ge 2 -a 11454 -le "$vht_max_mpdu" ] && \
274 vht_max_mpdu_hw
=11454
275 [ "$vht_max_mpdu_hw" != 3895 ] && \
276 vht_capab
="$vht_capab[MAX-MPDU-$vht_max_mpdu_hw]"
278 # maximum A-MPDU length exponent
279 vht_max_a_mpdu_len_exp_hw
=0
280 [ "$(($vht_cap & 58720256))" -ge 8388608 -a 1 -le "$vht_max_a_mpdu_len_exp" ] && \
281 vht_max_a_mpdu_len_exp_hw
=1
282 [ "$(($vht_cap & 58720256))" -ge 16777216 -a 2 -le "$vht_max_a_mpdu_len_exp" ] && \
283 vht_max_a_mpdu_len_exp_hw
=2
284 [ "$(($vht_cap & 58720256))" -ge 25165824 -a 3 -le "$vht_max_a_mpdu_len_exp" ] && \
285 vht_max_a_mpdu_len_exp_hw
=3
286 [ "$(($vht_cap & 58720256))" -ge 33554432 -a 4 -le "$vht_max_a_mpdu_len_exp" ] && \
287 vht_max_a_mpdu_len_exp_hw
=4
288 [ "$(($vht_cap & 58720256))" -ge 41943040 -a 5 -le "$vht_max_a_mpdu_len_exp" ] && \
289 vht_max_a_mpdu_len_exp_hw
=5
290 [ "$(($vht_cap & 58720256))" -ge 50331648 -a 6 -le "$vht_max_a_mpdu_len_exp" ] && \
291 vht_max_a_mpdu_len_exp_hw
=6
292 [ "$(($vht_cap & 58720256))" -ge 58720256 -a 7 -le "$vht_max_a_mpdu_len_exp" ] && \
293 vht_max_a_mpdu_len_exp_hw
=7
294 vht_capab
="$vht_capab[MAX-A-MPDU-LEN-EXP$vht_max_a_mpdu_len_exp_hw]"
296 # whether or not the STA supports link adaptation using VHT variant
298 [ "$(($vht_cap & 201326592))" -ge 134217728 -a 2 -le "$vht_link_adapt" ] && \
300 [ "$(($vht_cap & 201326592))" -ge 201326592 -a 3 -le "$vht_link_adapt" ] && \
302 [ "$vht_link_adapt_hw" != 0 ] && \
303 vht_capab
="$vht_capab[VHT-LINK-ADAPT-$vht_link_adapt_hw]"
305 [ -n "$vht_capab" ] && append base_cfg
"vht_capab=$vht_capab" "$N"
308 hostapd_prepare_device_config
"$hostapd_conf_file" nl80211
309 cat >> "$hostapd_conf_file" <<EOF
310 ${channel:+channel=$channel}
311 ${channel_list:+chanlist=$channel_list}
312 ${hostapd_noscan:+noscan=1}
319 mac80211_hostapd_setup_bss
() {
326 append hostapd_cfg
"$type=$ifname" "$N"
328 hostapd_set_bss_options hostapd_cfg
"$vif" ||
return 1
329 json_get_vars wds dtim_period max_listen_int start_disabled
332 set_default start_disabled
0
334 [ "$wds" -gt 0 ] && append hostapd_cfg
"wds_sta=1" "$N"
335 [ "$staidx" -gt 0 -o "$start_disabled" -eq 1 ] && append hostapd_cfg
"start_disabled=1" "$N"
337 cat >> /var
/run
/hostapd-
$phy.conf
<<EOF
340 ${dtim_period:+dtim_period=$dtim_period}
341 ${max_listen_int:+max_listen_interval=$max_listen_int}
345 mac80211_get_addr
() {
347 local idx
="$(($2 + 1))"
349 head -n $
(($macidx + 1)) /sys
/class
/ieee80211
/${phy}/addresses |
tail -n1
352 mac80211_generate_mac
() {
354 local id
="${macidx:-0}"
356 local ref
="$(cat /sys/class/ieee80211/${phy}/macaddress)"
357 local mask
="$(cat /sys/class/ieee80211/${phy}/address_mask)"
359 [ "$mask" = "00:00:00:00:00:00" ] && {
360 mask
="ff:ff:ff:ff:ff:ff";
362 [ "$(wc -l < /sys/class/ieee80211/${phy}/addresses)" -gt 1 ] && {
363 addr
="$(mac80211_get_addr "$phy" "$id")"
371 local oIFS
="$IFS"; IFS
=":"; set -- $mask; IFS
="$oIFS"
376 local oIFS
="$IFS"; IFS
=":"; set -- $ref; IFS
="$oIFS"
379 [ "$((0x$mask1))" -gt 0 ] && {
382 b1
=$
(($b1 ^
((($id - 1) << 2) | 0x2)))
383 printf "%02x:%s:%s:%s:%s:%s" $b1 $2 $3 $4 $5 $6
387 [ "$((0x$mask6))" -lt 255 ] && {
388 printf "%s:%s:%s:%s:%s:%02x" $1 $2 $3 $4 $5 $(( 0x$6 ^ $id ))
392 off2=$(( (0x$6 + $id) / 0x100 ))
393 printf "%s:%s:%s:%s:%02x:%02x" \
395 $(( (0x$5 + $off2) % 0x100 )) \
396 $(( (0x$6 + $id) % 0x100 ))
400 [ -n "$phy" -a -d /sys/class/ieee80211/$phy ] && return 0
402 for phy in $(ls /sys/class/ieee80211 2>/dev
/null
); do
403 case "$(readlink -f /sys/class/ieee80211/$phy/device)" in
408 [ -n "$macaddr" ] && {
409 for phy
in $
(ls /sys
/class
/ieee80211
2>/dev
/null
); do
410 grep -i -q "$macaddr" "/sys/class/ieee80211/${phy}/macaddress" && return 0
416 mac80211_check_ap
() {
420 mac80211_iw_interface_add
() {
427 iw phy
"$phy" interface add
"$ifname" type "$type" $wdsflag
431 # Device might have just been deleted, give the kernel some time to finish cleaning it up
434 iw phy
"$phy" interface add
"$ifname" type "$type" $wdsflag
439 # Device might not support virtual interfaces, so the interface never got deleted in the first place.
440 # Check if the interface already exists, and avoid failing in this case.
441 ip link show dev
"$ifname" >/dev
/null
2>/dev
/null
&& rc
=0
444 [ "$rc" != 0 ] && wireless_setup_failed INTERFACE_CREATION_FAILED
448 mac80211_prepare_vif
() {
451 json_get_vars ifname mode ssid wds powersave macaddr
453 [ -n "$ifname" ] || ifname
="wlan${phy#phy}${if_idx:+-$if_idx}"
454 if_idx
=$
((${if_idx:-0} + 1))
457 set_default powersave
0
461 [ -n "$macaddr" ] ||
{
462 macaddr
="$(mac80211_generate_mac $phy)"
463 macidx
="$(($macidx + 1))"
467 json_add_string ifname
"$ifname"
471 # It is far easier to delete and create the desired interface
474 mac80211_iw_interface_add
"$phy" "$ifname" adhoc ||
return
477 # Hostapd will handle recreating the interface and
478 # subsequent virtual APs belonging to the same PHY
479 if [ -n "$hostapd_ctrl" ]; then
485 mac80211_hostapd_setup_bss
"$phy" "$ifname" "$macaddr" "$type" ||
return
487 [ -n "$hostapd_ctrl" ] ||
{
488 mac80211_iw_interface_add
"$phy" "$ifname" __ap ||
return
489 hostapd_ctrl
="${hostapd_ctrl:-/var/run/hostapd/$ifname}"
493 mac80211_iw_interface_add
"$phy" "$ifname" mp ||
return
496 mac80211_iw_interface_add
"$phy" "$ifname" monitor ||
return
500 staidx
="$(($staidx + 1))"
501 [ "$wds" -gt 0 ] && wdsflag
="4addr on"
502 mac80211_iw_interface_add
"$phy" "$ifname" managed
"$wdsflag" ||
return
503 [ "$powersave" -gt 0 ] && powersave
="on" || powersave
="off"
504 iw
"$ifname" set power_save
"$powersave"
510 [ "$auto_channel" -gt 0 ] || iw dev
"$ifname" set channel
"$channel" $htmode
514 if [ "$mode" != "ap" ]; then
515 # ALL ap functionality will be passed to hostapd
516 # All interfaces must have unique mac addresses
517 # which can either be explicitly set in the device
518 # section, or automatically generated
519 ip link
set dev
"$ifname" address
"$macaddr"
525 mac80211_setup_supplicant
() {
526 wpa_supplicant_prepare_interface
"$ifname" nl80211 ||
return 1
527 if [ "$mode" = "sta" ]; then
528 wpa_supplicant_add_network
"$ifname"
530 wpa_supplicant_add_network
"$ifname" "$freq" "$htmode" "$noscan"
532 wpa_supplicant_run
"$ifname" ${hostapd_ctrl:+-H $hostapd_ctrl}
535 mac80211_setup_supplicant_noctl
() {
536 wpa_supplicant_prepare_interface
"$ifname" nl80211 ||
return 1
537 wpa_supplicant_add_network
"$ifname" "$freq" "$htmode" "$noscan"
538 wpa_supplicant_run
"$ifname"
541 mac80211_setup_adhoc_htmode
() {
543 VHT20|HT20
) ibss_htmode
=HT20
;;
547 case "$(( ($channel / 4) % 2 ))" in
548 1) ibss_htmode
="HT40+" ;;
549 0) ibss_htmode
="HT40-";;
554 HT40
+) ibss_htmode
="HT40+";;
555 HT40-
) ibss_htmode
="HT40-";;
557 if [ "$channel" -lt 7 ]; then
566 [ "$auto_channel" -gt 0 ] && ibss_htmode
="HT40+"
579 mac80211_setup_adhoc
() {
580 json_get_vars bssid ssid key mcast_rate
583 [ "$auth_type" = "wep" ] && {
588 for idx
in 1 2 3 4; do
589 json_get_var ikey
"key$idx"
592 ikey
="$(($idx - 1)):$(prepare_key_wep "$ikey")"
593 [ $idx -eq $key ] && ikey
="d:$ikey"
594 append keyspec
"$ikey"
599 append keyspec
"d:0:$(prepare_key_wep "$key")"
605 for br
in $basic_rate_list; do
606 wpa_supplicant_add_rate brstr
"$br"
610 [ -n "$mcast_rate" ] && wpa_supplicant_add_rate mcval
"$mcast_rate"
612 iw dev
"$ifname" ibss
join "$ssid" $freq $ibss_htmode fixed-freq
$bssid \
613 beacon-interval
$beacon_int \
614 ${brstr:+basic-rates $brstr} \
615 ${mcval:+mcast-rate $mcval} \
616 ${keyspec:+keys $keyspec}
619 mac80211_setup_mesh
() {
620 json_get_vars ssid mesh_id mcast_rate
623 [ -n "$mcast_rate" ] && wpa_supplicant_add_rate mcval
"$mcast_rate"
624 [ -n "$mesh_id" ] && ssid
="$mesh_id"
627 VHT20|HT20
) mesh_htmode
=HT20
;;
631 case "$(( ($channel / 4) % 2 ))" in
632 1) mesh_htmode
="HT40+" ;;
633 0) mesh_htmode
="HT40-";;
638 HT40
+) mesh_htmode
="HT40+";;
639 HT40-
) mesh_htmode
="HT40-";;
641 if [ "$channel" -lt 7 ]; then
657 *) mesh_htmode
="NOHT" ;;
659 iw dev
"$ifname" mesh
join "$ssid" freq
$freq $mesh_htmode \
660 ${mcval:+mcast-rate $mcval} \
661 beacon-interval
$beacon_int
664 mac80211_setup_vif
() {
674 json_get_var vif_txpower txpower
676 ip link
set dev
"$ifname" up ||
{
677 wireless_setup_vif_failed IFUP_ERROR
682 set_default vif_txpower
"$txpower"
683 [ -z "$vif_txpower" ] || iw dev
"$ifname" set txpower fixed
"${vif_txpower%%.*}00"
687 wireless_vif_parse_encryption
688 freq
="$(get_freq "$phy" "$channel")"
689 if [ "$wpa" -gt 0 -o "$auto_channel" -gt 0 ] || chan_is_dfs
"$phy" "$channel"; then
690 mac80211_setup_supplicant || failed
=1
694 for var
in $MP_CONFIG_INT $MP_CONFIG_BOOL $MP_CONFIG_STRING; do
695 json_get_var mp_val
"$var"
696 [ -n "$mp_val" ] && iw dev
"$ifname" set mesh_param
"$var" "$mp_val"
700 wireless_vif_parse_encryption
701 mac80211_setup_adhoc_htmode
702 if [ "$wpa" -gt 0 -o "$auto_channel" -gt 0 ]; then
703 freq
="$(get_freq "$phy" "$channel")"
704 mac80211_setup_supplicant_noctl || failed
=1
710 mac80211_setup_supplicant || failed
=1
715 [ -n "$failed" ] || wireless_add_vif
"$name" "$ifname"
721 iw
"$phy" info |
grep -E -m1 "(\* ${chan:-....} MHz${chan:+|\\[$chan\\]})" | grep MHz | awk '{print $2}'
727 iw "$phy" info | grep -E -m1 "(\
* ${chan:-....} MHz
${chan:+|\\[$chan\\]})" | grep -q "MHz.
*radar detection
"
731 mac80211_interface_cleanup() {
734 for wdev in $(list_phy_interfaces "$phy"); do
735 ip link set dev "$wdev" down 2>/dev/null
740 mac80211_set_noscan() {
744 drv_mac80211_cleanup() {
745 hostapd_common_cleanup
748 drv_mac80211_setup() {
752 country chanbw distance \
753 txpower antenna_gain \
754 rxantenna txantenna \
755 frag rts beacon_int:100 htmode
756 json_get_values basic_rate_list basic_rate
760 echo "Could not
find PHY
for device
'$1'"
765 wireless_set_data phy="$phy"
766 mac80211_interface_cleanup "$phy"
768 # convert channel to frequency
769 [ "$auto_channel" -gt 0 ] || freq="$
(get_freq
"$phy" "$channel")"
771 [ -n "$country" ] && {
772 iw reg get | grep -q "^country
$country:" || {
773 iw reg set "$country"
778 hostapd_conf_file="/var
/run
/hostapd-
$phy.conf
"
784 [ -n "$chanbw" ] && {
785 for file in /sys/kernel/debug/ieee80211/$phy/ath9k/chanbw /sys/kernel/debug/ieee80211/$phy/ath5k/bwmode; do
786 [ -f "$file" ] && echo "$chanbw" > "$file"
790 set_default rxantenna 0xffffffff
791 set_default txantenna 0xffffffff
792 set_default distance 0
793 set_default antenna_gain 0
795 [ "$txantenna" = "all
" ] && txantenna=0xffffffff
796 [ "$rxantenna" = "all
" ] && rxantenna=0xffffffff
798 iw phy "$phy" set antenna $txantenna $rxantenna >/dev/null 2>&1
799 iw phy "$phy" set antenna_gain $antenna_gain
800 iw phy "$phy" set distance "$distance"
802 [ -n "$frag" ] && iw phy "$phy" set frag "${frag%%.*}"
803 [ -n "$rts" ] && iw phy "$phy" set rts "${rts%%.*}"
808 for_each_interface "ap
" mac80211_check_ap
810 rm -f "$hostapd_conf_file"
812 for_each_interface "sta adhoc mesh
" mac80211_set_noscan
813 [ -n "$has_ap" ] && mac80211_hostapd_setup_base "$phy"
815 for_each_interface "sta adhoc mesh monitor
" mac80211_prepare_vif
816 for_each_interface "ap
" mac80211_prepare_vif
818 [ -n "$hostapd_ctrl" ] && {
819 /usr/sbin/hostapd -s -P /var/run/wifi-$phy.pid -B "$hostapd_conf_file"
821 wireless_add_process "$
(cat /var
/run
/wifi-
$phy.pid
)" "/usr
/sbin
/hostapd
" 1
823 wireless_setup_failed HOSTAPD_START_FAILED
828 for_each_interface "ap sta adhoc mesh monitor
" mac80211_setup_vif
833 list_phy_interfaces() {
835 if [ -d "/sys
/class
/ieee80211
/${phy}/device
/net
" ]; then
836 ls "/sys
/class
/ieee80211
/${phy}/device
/net
" 2>/dev/null;
838 ls "/sys
/class
/ieee80211
/${phy}/device
" 2>/dev/null | grep net: | sed -e 's,net:,,g'
842 drv_mac80211_teardown() {
843 wireless_process_kill_all
849 mac80211_interface_cleanup "$phy"