2ca63bb5cf8917bad5fb7e974b9908a475f84734
[openwrt/svn-archive/archive.git] / package / mac80211 / files / lib / wifi / mac80211.sh
1 #!/bin/sh
2 append DRIVERS "mac80211"
3
4 mac80211_hostapd_setup_base() {
5 local phy="$1"
6 local ifname="$2"
7
8 cfgfile="/var/run/hostapd-$phy.conf"
9 macfile="/var/run/hostapd-$phy.maclist"
10 [ -e "$macfile" ] && rm -f "$macfile"
11
12 config_get device "$vif" device
13 config_get country "$device" country
14 config_get hwmode "$device" hwmode
15 config_get channel "$device" channel
16 config_get beacon_int "$device" beacon_int
17 config_get basic_rate_list "$device" basic_rate
18 config_get_bool noscan "$device" noscan
19 [ -n "$channel" -a -z "$hwmode" ] && wifi_fixup_hwmode "$device"
20 [ "$channel" = auto ] && channel=
21 [ -n "$hwmode" ] && {
22 config_get hwmode_11n "$device" hwmode_11n
23 [ -n "$hwmode_11n" ] && {
24 hwmode="$hwmode_11n"
25 append base_cfg "ieee80211n=1" "$N"
26 config_get htmode "$device" htmode
27 config_get ht_capab_list "$device" ht_capab
28 case "$htmode" in
29 HT20|HT40+|HT40-) ht_capab="[$htmode]";;
30 *)ht_capab=;;
31 esac
32 for cap in $ht_capab_list; do
33 ht_capab="$ht_capab[$cap]"
34 done
35 [ -n "$ht_capab" ] && append base_cfg "ht_capab=$ht_capab" "$N"
36 }
37 }
38
39 local country_ie=0
40 [ -n "$country" ] && country_ie=1
41 config_get_bool country_ie "$device" country_ie "$country_ie"
42 [ "$country_ie" -gt 0 ] && append base_cfg "ieee80211d=1" "$N"
43
44 config_get macfilter "$vif" macfilter
45 case "$macfilter" in
46 allow)
47 append base_cfg "macaddr_acl=1" "$N"
48 append base_cfg "accept_mac_file=$macfile" "$N"
49 ;;
50 deny)
51 append base_cfg "macaddr_acl=0" "$N"
52 append base_cfg "deny_mac_file=$macfile" "$N"
53 ;;
54 esac
55 config_get maclist "$vif" maclist
56 [ -n "$maclist" ] && {
57 for mac in $maclist; do
58 echo "$mac" >> $macfile
59 done
60 }
61
62 local br brval brstr
63 [ -n "$basic_rate_list" ] && {
64 for br in $basic_rate_list; do
65 brval="$(($br / 100))"
66 [ -n "$brstr" ] && brstr="$brstr "
67 brstr="$brstr$brval"
68 done
69 }
70
71 cat >> "$cfgfile" <<EOF
72 ctrl_interface=/var/run/hostapd-$phy
73 driver=nl80211
74 wmm_ac_bk_cwmin=4
75 wmm_ac_bk_cwmax=10
76 wmm_ac_bk_aifs=7
77 wmm_ac_bk_txop_limit=0
78 wmm_ac_bk_acm=0
79 wmm_ac_be_aifs=3
80 wmm_ac_be_cwmin=4
81 wmm_ac_be_cwmax=10
82 wmm_ac_be_txop_limit=0
83 wmm_ac_be_acm=0
84 wmm_ac_vi_aifs=2
85 wmm_ac_vi_cwmin=3
86 wmm_ac_vi_cwmax=4
87 wmm_ac_vi_txop_limit=94
88 wmm_ac_vi_acm=0
89 wmm_ac_vo_aifs=2
90 wmm_ac_vo_cwmin=2
91 wmm_ac_vo_cwmax=3
92 wmm_ac_vo_txop_limit=47
93 wmm_ac_vo_acm=0
94 tx_queue_data3_aifs=7
95 tx_queue_data3_cwmin=15
96 tx_queue_data3_cwmax=1023
97 tx_queue_data3_burst=0
98 tx_queue_data2_aifs=3
99 tx_queue_data2_cwmin=15
100 tx_queue_data2_cwmax=63
101 tx_queue_data2_burst=0
102 tx_queue_data1_aifs=1
103 tx_queue_data1_cwmin=7
104 tx_queue_data1_cwmax=15
105 tx_queue_data1_burst=3.0
106 tx_queue_data0_aifs=1
107 tx_queue_data0_cwmin=3
108 tx_queue_data0_cwmax=7
109 tx_queue_data0_burst=1.5
110 ${hwmode:+hw_mode=$hwmode}
111 ${channel:+channel=$channel}
112 ${beacon_int:+beacon_int=$beacon_int}
113 ${country:+country_code=$country}
114 ${noscan:+noscan=$noscan}
115 ${brstr:+basic_rates=$brstr}
116 $base_cfg
117
118 EOF
119 }
120
121 mac80211_hostapd_setup_bss() {
122 local phy="$1"
123 local vif="$2"
124
125 hostapd_cfg=
126 cfgfile="/var/run/hostapd-$phy.conf"
127 config_get ifname "$vif" ifname
128
129 if [ -f "$cfgfile" ]; then
130 append hostapd_cfg "bss=$ifname" "$N"
131 else
132 mac80211_hostapd_setup_base "$phy" "$ifname"
133 append hostapd_cfg "interface=$ifname" "$N"
134 fi
135
136 local net_cfg bridge
137 net_cfg="$(find_net_config "$vif")"
138 [ -z "$net_cfg" ] || bridge="$(bridge_interface "$net_cfg")"
139 config_set "$vif" bridge "$bridge"
140
141 hostapd_set_bss_options hostapd_cfg "$vif"
142
143 config_get_bool wds "$vif" wds 0
144 [ "$wds" -gt 0 ] && append hostapd_cfg "wds_sta=1" "$N"
145
146 local macaddr hidden maxassoc wmm
147 config_get macaddr "$vif" macaddr
148 config_get maxassoc "$vif" maxassoc
149 config_get dtim_period "$vif" dtim_period
150 config_get max_listen_int "$vif" max_listen_int
151 config_get_bool hidden "$vif" hidden 0
152 config_get_bool wmm "$vif" wmm 1
153 cat >> /var/run/hostapd-$phy.conf <<EOF
154 $hostapd_cfg
155 wmm_enabled=$wmm
156 bssid=$macaddr
157 ignore_broadcast_ssid=$hidden
158 ${dtim_period:+dtim_period=$dtim_period}
159 ${max_listen_int:+max_listen_interval=$max_listen_int}
160 ${maxassoc:+max_num_sta=$maxassoc}
161 EOF
162 }
163
164 mac80211_start_vif() {
165 local vif="$1"
166 local ifname="$2"
167
168 local net_cfg
169 net_cfg="$(find_net_config "$vif")"
170 [ -z "$net_cfg" ] || start_net "$ifname" "$net_cfg"
171
172 set_wifi_up "$vif" "$ifname"
173 }
174
175 find_mac80211_phy() {
176 local device="$1"
177
178 local macaddr="$(config_get "$device" macaddr | tr 'A-Z' 'a-z')"
179 config_get phy "$device" phy
180 [ -z "$phy" -a -n "$macaddr" ] && {
181 for phy in $(ls /sys/class/ieee80211 2>/dev/null); do
182 [ "$macaddr" = "$(cat /sys/class/ieee80211/${phy}/macaddress)" ] || continue
183 config_set "$device" phy "$phy"
184 break
185 done
186 config_get phy "$device" phy
187 }
188 [ -n "$phy" -a -d "/sys/class/ieee80211/$phy" ] || {
189 echo "PHY for wifi device $1 not found"
190 return 1
191 }
192 [ -z "$macaddr" ] && {
193 config_set "$device" macaddr "$(cat /sys/class/ieee80211/${phy}/macaddress)"
194 }
195 return 0
196 }
197
198 scan_mac80211() {
199 local device="$1"
200 local adhoc sta ap monitor mesh
201
202 config_get vifs "$device" vifs
203 for vif in $vifs; do
204 config_get mode "$vif" mode
205 case "$mode" in
206 adhoc|sta|ap|monitor|mesh)
207 append $mode "$vif"
208 ;;
209 *) echo "$device($vif): Invalid mode, ignored."; continue;;
210 esac
211 done
212
213 config_set "$device" vifs "${ap:+$ap }${adhoc:+$adhoc }${sta:+$sta }${monitor:+$monitor }${mesh:+$mesh}"
214 }
215
216 list_phy_interfaces() {
217 local phy="$1"
218 if [ -d "/sys/class/ieee80211/${phy}/device/net" ]; then
219 ls "/sys/class/ieee80211/${phy}/device/net" 2>/dev/null;
220 else
221 ls "/sys/class/ieee80211/${phy}/device" 2>/dev/null | grep net: | sed -e 's,net:,,g'
222 fi
223 }
224
225 disable_mac80211() (
226 local device="$1"
227
228 find_mac80211_phy "$device" || return 0
229 config_get phy "$device" phy
230
231 set_wifi_down "$device"
232 # kill all running hostapd and wpa_supplicant processes that
233 # are running on atheros/mac80211 vifs
234 for pid in `pidof hostapd`; do
235 grep -E "$phy" /proc/$pid/cmdline >/dev/null && \
236 kill $pid
237 done
238
239 include /lib/network
240 for wdev in $(list_phy_interfaces "$phy"); do
241 [ -f "/var/run/$wdev.pid" ] && kill $(cat /var/run/$wdev.pid) >&/dev/null 2>&1
242 for pid in `pidof wpa_supplicant`; do
243 grep "$wdev" /proc/$pid/cmdline >/dev/null && \
244 kill $pid
245 done
246 ifconfig "$wdev" down 2>/dev/null
247 unbridge "$dev"
248 iw dev "$wdev" del
249 done
250
251 return 0
252 )
253 get_freq() {
254 local phy="$1"
255 local chan="$2"
256 iw "$phy" info | grep -E -m1 "(\* ${chan:-....} MHz${chan:+|\\[$chan\\]})" | grep MHz | awk '{print $2}'
257 }
258 enable_mac80211() {
259 local device="$1"
260 config_get channel "$device" channel
261 config_get vifs "$device" vifs
262 config_get txpower "$device" txpower
263 config_get country "$device" country
264 config_get distance "$device" distance
265 config_get txantenna "$device" txantenna all
266 config_get rxantenna "$device" rxantenna all
267 config_get frag "$device" frag
268 config_get rts "$device" rts
269 find_mac80211_phy "$device" || return 0
270 config_get phy "$device" phy
271 local i=0
272 local macidx=0
273 local apidx=0
274 fixed=""
275 local hostapd_ctrl=""
276
277 [ -n "$country" ] && iw reg set "$country"
278 [ "$channel" = "auto" -o "$channel" = "0" ] || {
279 fixed=1
280 }
281
282 iw phy "$phy" set antenna $txantenna $rxantenna >/dev/null 2>&1
283
284 [ -n "$distance" ] && iw phy "$phy" set distance "$distance"
285 [ -n "$frag" ] && iw phy "$phy" set frag "${frag%%.*}"
286 [ -n "$rts" ] && iw phy "$phy" set rts "${rts%%.*}"
287
288 export channel fixed
289 # convert channel to frequency
290 local freq="$(get_freq "$phy" "${fixed:+$channel}")"
291
292 wifi_fixup_hwmode "$device" "g"
293 for vif in $vifs; do
294 while [ -d "/sys/class/net/wlan$i" ]; do
295 i=$(($i + 1))
296 done
297
298 config_get ifname "$vif" ifname
299 [ -n "$ifname" ] || {
300 ifname="wlan$i"
301 }
302 config_set "$vif" ifname "$ifname"
303
304 config_get mode "$vif" mode
305 config_get ssid "$vif" ssid
306
307 # It is far easier to delete and create the desired interface
308 case "$mode" in
309 adhoc)
310 iw phy "$phy" interface add "$ifname" type adhoc
311 ;;
312 ap)
313 # Hostapd will handle recreating the interface and
314 # it's accompanying monitor
315 apidx="$(($apidx + 1))"
316 i=$(($i + 1))
317 [ "$apidx" -gt 1 ] || iw phy "$phy" interface add "$ifname" type managed
318 ;;
319 mesh)
320 config_get mesh_id "$vif" mesh_id
321 iw phy "$phy" interface add "$ifname" type mp mesh_id "$mesh_id"
322 ;;
323 monitor)
324 iw phy "$phy" interface add "$ifname" type monitor
325 ;;
326 sta)
327 local wdsflag
328 config_get_bool wds "$vif" wds 0
329 [ "$wds" -gt 0 ] && wdsflag="4addr on"
330 iw phy "$phy" interface add "$ifname" type managed $wdsflag
331 config_get_bool powersave "$vif" powersave 0
332 [ "$powersave" -gt 0 ] && powersave="on" || powersave="off"
333 iwconfig "$ifname" power "$powersave"
334 ;;
335 esac
336
337 # All interfaces must have unique mac addresses
338 # which can either be explicitly set in the device
339 # section, or automatically generated
340 config_get macaddr "$device" macaddr
341 local mac_1="${macaddr%%:*}"
342 local mac_2="${macaddr#*:}"
343
344 config_get vif_mac "$vif" macaddr
345 [ -n "$vif_mac" ] || {
346 if [ "$macidx" -gt 0 ]; then
347 offset="$(( 2 + $macidx * 4 ))"
348 else
349 offset="0"
350 fi
351 vif_mac="$( printf %02x $((0x$mac_1 + $offset)) ):$mac_2"
352 macidx="$(($macidx + 1))"
353 }
354 [ "$mode" = "ap" ] || ifconfig "$ifname" hw ether "$vif_mac"
355 config_set "$vif" macaddr "$vif_mac"
356
357 # !! ap !!
358 #
359 # ALL ap functionality will be passed to hostapd
360 #
361 # !! station !!
362 #
363 # ALL station functionality will be passed to wpa_supplicant
364 #
365 if [ ! "$mode" = "ap" ]; then
366 # We attempt to set the channel for all interfaces, although
367 # mac80211 may not support it or the driver might not yet
368 # for ap mode this is handled by hostapd
369 [ -n "$fixed" -a -n "$channel" ] && iw dev "$ifname" set channel "$channel"
370 fi
371
372 config_get vif_txpower "$vif" txpower
373 # use vif_txpower (from wifi-iface) to override txpower (from
374 # wifi-device) if the latter doesn't exist
375 txpower="${txpower:-$vif_txpower}"
376 [ -z "$txpower" ] || iw dev "$ifname" set txpower fixed "${txpower%%.*}00"
377 done
378
379 local start_hostapd=
380 rm -f /var/run/hostapd-$phy.conf
381 for vif in $vifs; do
382 config_get mode "$vif" mode
383 [ "$mode" = "ap" ] || continue
384 mac80211_hostapd_setup_bss "$phy" "$vif"
385 start_hostapd=1
386 done
387
388 [ -n "$start_hostapd" ] && {
389 hostapd -P /var/run/wifi-$phy.pid -B /var/run/hostapd-$phy.conf || {
390 echo "Failed to start hostapd for $phy"
391 return
392 }
393 sleep 2
394
395 for vif in $vifs; do
396 config_get mode "$vif" mode
397 config_get ifname "$vif" ifname
398 [ "$mode" = "ap" ] || continue
399 hostapd_ctrl="${hostapd_ctrl:-/var/run/hostapd-$phy/$ifname}"
400 mac80211_start_vif "$vif" "$ifname"
401 done
402 }
403
404 for vif in $vifs; do
405 config_get mode "$vif" mode
406 config_get ifname "$vif" ifname
407 [ ! "$mode" = "ap" ] || continue
408 ifconfig "$ifname" up
409
410 if [ ! "$mode" = "ap" ]; then
411 ifconfig "$ifname" up
412 case "$mode" in
413 adhoc)
414 config_get bssid "$vif" bssid
415 config_get ssid "$vif" ssid
416 config_get beacon_int "$device" beacon_int
417 config_get basic_rate_list "$device" basic_rate
418 config_get encryption "$vif" encryption
419 config_get key "$vif" key 1
420 config_get mcast_rate "$vif" mcast_rate
421
422 local keyspec=""
423 [ "$encryption" == "wep" ] && {
424 case "$key" in
425 [1234])
426 local idx
427 for idx in 1 2 3 4; do
428 local ikey
429 config_get ikey "$vif" "key$idx"
430
431 [ -n "$ikey" ] && {
432 ikey="$(($idx - 1)):$(prepare_key_wep "$ikey")"
433 [ $idx -eq $key ] && ikey="d:$ikey"
434 append keyspec "$ikey"
435 }
436 done
437 ;;
438 *) append keyspec "d:0:$(prepare_key_wep "$key")" ;;
439 esac
440 }
441
442 local br brval brsub brstr
443 [ -n "$basic_rate_list" ] && {
444 for br in $basic_rate_list; do
445 brval="$(($br / 1000))"
446 brsub="$((($br / 100) % 10))"
447 [ "$brsub" -gt 0 ] && brval="$brval.$brsub"
448 [ -n "$brstr" ] && brstr="$brstr,"
449 brstr="$brstr$brval"
450 done
451 }
452
453 local mcval=""
454 [ -n "$mcast_rate" ] && {
455 mcval="$(($mcast_rate / 1000))"
456 mcsub="$(( ($mcast_rate / 100) % 10 ))"
457 [ "$mcsub" -gt 0 ] && mcval="$mcval.$mcsub"
458 }
459
460 iw dev "$ifname" ibss join "$ssid" $freq \
461 ${fixed:+fixed-freq} $bssid \
462 ${beacon_int:+beacon-interval $beacon_int} \
463 ${brstr:+basic-rates $brstr} \
464 ${mcval:+mcast-rate $mcval} \
465 ${keyspec:+keys $keyspec}
466 ;;
467 sta)
468 if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
469 wpa_supplicant_setup_vif "$vif" nl80211 "${hostapd_ctrl:+-H $hostapd_ctrl}" || {
470 echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2
471 # make sure this wifi interface won't accidentally stay open without encryption
472 ifconfig "$ifname" down
473 continue
474 }
475 fi
476 ;;
477 esac
478 mac80211_start_vif "$vif" "$ifname"
479 fi
480 done
481
482 }
483
484
485 check_mac80211_device() {
486 config_get phy "$1" phy
487 [ -z "$phy" ] && {
488 find_mac80211_phy "$1" >/dev/null || return 0
489 config_get phy "$1" phy
490 }
491 [ "$phy" = "$dev" ] && found=1
492 }
493
494 detect_mac80211() {
495 devidx=0
496 config_load wireless
497 while :; do
498 config_get type "radio$devidx" type
499 [ -n "$type" ] || break
500 devidx=$(($devidx + 1))
501 done
502 for dev in $(ls /sys/class/ieee80211); do
503 found=0
504 config_foreach check_mac80211_device wifi-device
505 [ "$found" -gt 0 ] && continue
506
507 mode_11n=""
508 mode_band="g"
509 channel="11"
510 ht_cap=0
511 for cap in $(iw phy "$dev" info | grep 'Capabilities:' | cut -d: -f2); do
512 ht_cap="$(($ht_cap | $cap))"
513 done
514 ht_capab="";
515 [ "$ht_cap" -gt 0 ] && {
516 mode_11n="n"
517 append ht_capab " option htmode HT20" "$N"
518
519 list=" list ht_capab"
520 [ "$(($ht_cap & 1))" -eq 1 ] && append ht_capab "$list LDPC" "$N"
521 [ "$(($ht_cap & 16))" -eq 16 ] && append ht_capab "$list GF" "$N"
522 [ "$(($ht_cap & 32))" -eq 32 ] && append ht_capab "$list SHORT-GI-20" "$N"
523 [ "$(($ht_cap & 64))" -eq 64 ] && append ht_capab "$list SHORT-GI-40" "$N"
524 [ "$(($ht_cap & 128))" -eq 128 ] && append ht_capab "$list TX-STBC" "$N"
525 [ "$(($ht_cap & 768))" -eq 256 ] && append ht_capab "$list RX-STBC1" "$N"
526 [ "$(($ht_cap & 768))" -eq 512 ] && append ht_capab "$list RX-STBC12" "$N"
527 [ "$(($ht_cap & 768))" -eq 768 ] && append ht_capab "$list RX-STBC123" "$N"
528 [ "$(($ht_cap & 4096))" -eq 4096 ] && append ht_capab "$list DSSS_CCK-40" "$N"
529 }
530 iw phy "$dev" info | grep -q '2412 MHz' || { mode_band="a"; channel="36"; }
531
532 cat <<EOF
533 config wifi-device radio$devidx
534 option type mac80211
535 option channel ${channel}
536 option macaddr $(cat /sys/class/ieee80211/${dev}/macaddress)
537 option hwmode 11${mode_11n}${mode_band}
538 $ht_capab
539 # REMOVE THIS LINE TO ENABLE WIFI:
540 option disabled 1
541
542 config wifi-iface
543 option device radio$devidx
544 option network lan
545 option mode ap
546 option ssid OpenWrt
547 option encryption none
548
549 EOF
550 devidx=$(($devidx + 1))
551 done
552 }
553