f1d89f87a01088ffa7eef5848c649f8bc2b8c5f3
[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 "$device" channel
16 config_get_bool noscan "$device" noscan
17 [ -n "$channel" -a -z "$hwmode" ] && wifi_fixup_hwmode "$device"
18 [ "$channel" = auto ] && channel=
19 [ -n "$hwmode" ] && {
20 config_get hwmode_11n "$device" hwmode_11n
21 [ -n "$hwmode_11n" ] && {
22 hwmode="$hwmode_11n"
23 append base_cfg "ieee80211n=1" "$N"
24 config_get htmode "$device" htmode
25 config_get ht_capab_list "$device" ht_capab
26 case "$htmode" in
27 HT20|HT40+|HT40-) ht_capab="[$htmode]";;
28 *)ht_capab=;;
29 esac
30 for cap in $ht_capab_list; do
31 ht_capab="$ht_capab[$cap]"
32 done
33 [ -n "$ht_capab" ] && append base_cfg "ht_capab=$ht_capab" "$N"
34 }
35 }
36
37 config_get macfilter "$vif" macfilter
38 case "$macfilter" in
39 allow)
40 append base_cfg "macaddr_acl=1" "$N"
41 append base_cfg "accept_mac_file=$macfile" "$N"
42 ;;
43 deny)
44 append base_cfg "macaddr_acl=0" "$N"
45 append base_cfg "deny_mac_file=$macfile" "$N"
46 ;;
47 esac
48 config_get maclist "$vif" maclist
49 [ -n "$maclist" ] && {
50 for mac in $maclist; do
51 echo "$mac" >> $macfile
52 done
53 }
54 cat >> "$cfgfile" <<EOF
55 ctrl_interface=/var/run/hostapd-$phy
56 driver=nl80211
57 wmm_ac_bk_cwmin=4
58 wmm_ac_bk_cwmax=10
59 wmm_ac_bk_aifs=7
60 wmm_ac_bk_txop_limit=0
61 wmm_ac_bk_acm=0
62 wmm_ac_be_aifs=3
63 wmm_ac_be_cwmin=4
64 wmm_ac_be_cwmax=10
65 wmm_ac_be_txop_limit=0
66 wmm_ac_be_acm=0
67 wmm_ac_vi_aifs=2
68 wmm_ac_vi_cwmin=3
69 wmm_ac_vi_cwmax=4
70 wmm_ac_vi_txop_limit=94
71 wmm_ac_vi_acm=0
72 wmm_ac_vo_aifs=2
73 wmm_ac_vo_cwmin=2
74 wmm_ac_vo_cwmax=3
75 wmm_ac_vo_txop_limit=47
76 wmm_ac_vo_acm=0
77 tx_queue_data3_aifs=7
78 tx_queue_data3_cwmin=15
79 tx_queue_data3_cwmax=1023
80 tx_queue_data3_burst=0
81 tx_queue_data2_aifs=3
82 tx_queue_data2_cwmin=15
83 tx_queue_data2_cwmax=63
84 tx_queue_data2_burst=0
85 tx_queue_data1_aifs=1
86 tx_queue_data1_cwmin=7
87 tx_queue_data1_cwmax=15
88 tx_queue_data1_burst=3.0
89 tx_queue_data0_aifs=1
90 tx_queue_data0_cwmin=3
91 tx_queue_data0_cwmax=7
92 tx_queue_data0_burst=1.5
93 ${hwmode:+hw_mode=$hwmode}
94 ${channel:+channel=$channel}
95 ${country:+country_code=$country}
96 ${noscan:+noscan=$noscan}
97 $base_cfg
98
99 EOF
100 }
101
102 mac80211_hostapd_setup_bss() {
103 local phy="$1"
104 local vif="$2"
105
106 hostapd_cfg=
107 cfgfile="/var/run/hostapd-$phy.conf"
108 config_get ifname "$vif" ifname
109
110 if [ -f "$cfgfile" ]; then
111 append hostapd_cfg "bss=$ifname" "$N"
112 else
113 mac80211_hostapd_setup_base "$phy" "$ifname"
114 append hostapd_cfg "interface=$ifname" "$N"
115 fi
116
117 local net_cfg bridge
118 net_cfg="$(find_net_config "$vif")"
119 [ -z "$net_cfg" ] || bridge="$(bridge_interface "$net_cfg")"
120 config_set "$vif" bridge "$bridge"
121
122 hostapd_set_bss_options hostapd_cfg "$vif"
123
124 config_get_bool wds "$vif" wds 0
125 [ "$wds" -gt 0 ] && append hostapd_cfg "wds_sta=1" "$N"
126
127 local macaddr hidden maxassoc wmm
128 config_get macaddr "$vif" macaddr
129 config_get maxassoc "$vif" maxassoc
130 config_get_bool hidden "$vif" hidden 0
131 config_get_bool wmm "$vif" wmm 1
132 cat >> /var/run/hostapd-$phy.conf <<EOF
133 $hostapd_cfg
134 wmm_enabled=$wmm
135 bssid=$macaddr
136 ignore_broadcast_ssid=$hidden
137 ${maxassoc:+max_num_sta=$maxassoc}
138 EOF
139 }
140
141 mac80211_start_vif() {
142 local vif="$1"
143 local ifname="$2"
144
145 local net_cfg
146 net_cfg="$(find_net_config "$vif")"
147 [ -z "$net_cfg" ] || start_net "$ifname" "$net_cfg"
148
149 set_wifi_up "$vif" "$ifname"
150 }
151
152 find_mac80211_phy() {
153 local device="$1"
154
155 local macaddr="$(config_get "$device" macaddr | tr 'A-Z' 'a-z')"
156 config_get phy "$device" phy
157 [ -z "$phy" -a -n "$macaddr" ] && {
158 for phy in $(ls /sys/class/ieee80211 2>/dev/null); do
159 [ "$macaddr" = "$(cat /sys/class/ieee80211/${phy}/macaddress)" ] || continue
160 config_set "$device" phy "$phy"
161 break
162 done
163 config_get phy "$device" phy
164 }
165 [ -n "$phy" -a -d "/sys/class/ieee80211/$phy" ] || {
166 echo "PHY for wifi device $1 not found"
167 return 1
168 }
169 [ -z "$macaddr" ] && {
170 config_set "$device" macaddr "$(cat /sys/class/ieee80211/${phy}/macaddress)"
171 }
172 return 0
173 }
174
175 scan_mac80211() {
176 local device="$1"
177 local adhoc sta ap monitor mesh
178
179 config_get vifs "$device" vifs
180 for vif in $vifs; do
181 config_get mode "$vif" mode
182 case "$mode" in
183 adhoc|sta|ap|monitor|mesh)
184 append $mode "$vif"
185 ;;
186 *) echo "$device($vif): Invalid mode, ignored."; continue;;
187 esac
188 done
189
190 config_set "$device" vifs "${ap:+$ap }${adhoc:+$adhoc }${sta:+$sta }${monitor:+$monitor }${mesh:+$mesh}"
191 }
192
193 list_phy_interfaces() {
194 local phy="$1"
195 if [ -d "/sys/class/ieee80211/${phy}/device/net" ]; then
196 ls "/sys/class/ieee80211/${phy}/device/net" 2>/dev/null;
197 else
198 ls "/sys/class/ieee80211/${phy}/device" 2>/dev/null | grep net: | sed -e 's,net:,,g'
199 fi
200 }
201
202 disable_mac80211() (
203 local device="$1"
204
205 find_mac80211_phy "$device" || return 0
206 config_get phy "$device" phy
207
208 set_wifi_down "$device"
209 # kill all running hostapd and wpa_supplicant processes that
210 # are running on atheros/mac80211 vifs
211 for pid in `pidof hostapd`; do
212 grep -E "$phy" /proc/$pid/cmdline >/dev/null && \
213 kill $pid
214 done
215
216 include /lib/network
217 for wdev in $(list_phy_interfaces "$phy"); do
218 [ -f "/var/run/$wdev.pid" ] && kill $(cat /var/run/$wdev.pid) >&/dev/null 2>&1
219 for pid in `pidof wpa_supplicant`; do
220 grep "$wdev" /proc/$pid/cmdline >/dev/null && \
221 kill $pid
222 done
223 ifconfig "$wdev" down 2>/dev/null
224 unbridge "$dev"
225 iw dev "$wdev" del
226 done
227
228 return 0
229 )
230 get_freq() {
231 local phy="$1"
232 local chan="$2"
233 iw "$phy" info | grep -E -m1 "(\* ${chan:-....} MHz${chan:+|\\[$chan\\]})" | grep MHz | awk '{print $2}'
234 }
235 enable_mac80211() {
236 local device="$1"
237 config_get channel "$device" channel
238 config_get vifs "$device" vifs
239 config_get txpower "$device" txpower
240 config_get country "$device" country
241 config_get distance "$device" distance
242 config_get txantenna "$device" txantenna
243 config_get rxantenna "$device" rxantenna
244 config_get frag "$device" frag
245 config_get rts "$device" rts
246 find_mac80211_phy "$device" || return 0
247 config_get phy "$device" phy
248 local i=0
249 local macidx=0
250 local apidx=0
251 fixed=""
252 local hostapd_ctrl=""
253
254 [ -n "$country" ] && iw reg set "$country"
255 [ "$channel" = "auto" -o "$channel" = "0" ] || {
256 fixed=1
257 }
258
259 local antspec="${txantenna:+$txantenna }$rxantenna"
260 iw phy "$phy" set antenna ${antspec:-all}
261
262 [ -n "$distance" ] && iw phy "$phy" set distance "$distance"
263 [ -n "$frag" ] && iw phy "$phy" set frag "${frag%%.*}"
264 [ -n "$rts" ] && iw phy "$phy" set rts "${rts%%.*}"
265
266 export channel fixed
267 # convert channel to frequency
268 local freq="$(get_freq "$phy" "${fixed:+$channel}")"
269
270 wifi_fixup_hwmode "$device" "g"
271 for vif in $vifs; do
272 while [ -d "/sys/class/net/wlan$i" ]; do
273 i=$(($i + 1))
274 done
275
276 config_get ifname "$vif" ifname
277 [ -n "$ifname" ] || {
278 ifname="wlan$i"
279 }
280 config_set "$vif" ifname "$ifname"
281
282 config_get mode "$vif" mode
283 config_get ssid "$vif" ssid
284
285 # It is far easier to delete and create the desired interface
286 case "$mode" in
287 adhoc)
288 iw phy "$phy" interface add "$ifname" type adhoc
289 ;;
290 ap)
291 # Hostapd will handle recreating the interface and
292 # it's accompanying monitor
293 apidx="$(($apidx + 1))"
294 i=$(($i + 1))
295 [ "$apidx" -gt 1 ] || iw phy "$phy" interface add "$ifname" type managed
296 ;;
297 mesh)
298 config_get mesh_id "$vif" mesh_id
299 iw phy "$phy" interface add "$ifname" type mp mesh_id "$mesh_id"
300 ;;
301 monitor)
302 iw phy "$phy" interface add "$ifname" type monitor
303 ;;
304 sta)
305 local wdsflag
306 config_get_bool wds "$vif" wds 0
307 [ "$wds" -gt 0 ] && wdsflag="4addr on"
308 iw phy "$phy" interface add "$ifname" type managed $wdsflag
309 config_get_bool powersave "$vif" powersave 0
310 [ "$powersave" -gt 0 ] && powersave="on" || powersave="off"
311 iwconfig "$ifname" power "$powersave"
312 ;;
313 esac
314
315 # All interfaces must have unique mac addresses
316 # which can either be explicitly set in the device
317 # section, or automatically generated
318 config_get macaddr "$device" macaddr
319 local mac_1="${macaddr%%:*}"
320 local mac_2="${macaddr#*:}"
321
322 config_get vif_mac "$vif" macaddr
323 [ -n "$vif_mac" ] || {
324 if [ "$macidx" -gt 0 ]; then
325 offset="$(( 2 + $macidx * 4 ))"
326 else
327 offset="0"
328 fi
329 vif_mac="$( printf %02x $((0x$mac_1 + $offset)) ):$mac_2"
330 macidx="$(($macidx + 1))"
331 }
332 [ "$mode" = "ap" ] || ifconfig "$ifname" hw ether "$vif_mac"
333 config_set "$vif" macaddr "$vif_mac"
334
335 # !! ap !!
336 #
337 # ALL ap functionality will be passed to hostapd
338 #
339 # !! station !!
340 #
341 # ALL station functionality will be passed to wpa_supplicant
342 #
343 if [ ! "$mode" = "ap" ]; then
344 # We attempt to set the channel for all interfaces, although
345 # mac80211 may not support it or the driver might not yet
346 # for ap mode this is handled by hostapd
347 [ -n "$fixed" -a -n "$channel" ] && iw dev "$ifname" set channel "$channel"
348 fi
349
350 config_get vif_txpower "$vif" txpower
351 # use vif_txpower (from wifi-iface) to override txpower (from
352 # wifi-device) if the latter doesn't exist
353 txpower="${txpower:-$vif_txpower}"
354 [ -z "$txpower" ] || iw dev "$ifname" set txpower fixed "${txpower%%.*}00"
355 done
356
357 local start_hostapd=
358 rm -f /var/run/hostapd-$phy.conf
359 for vif in $vifs; do
360 config_get mode "$vif" mode
361 [ "$mode" = "ap" ] || continue
362 mac80211_hostapd_setup_bss "$phy" "$vif"
363 start_hostapd=1
364 done
365
366 [ -n "$start_hostapd" ] && {
367 hostapd -P /var/run/wifi-$phy.pid -B /var/run/hostapd-$phy.conf || {
368 echo "Failed to start hostapd for $phy"
369 return
370 }
371 sleep 2
372
373 for vif in $vifs; do
374 config_get mode "$vif" mode
375 config_get ifname "$vif" ifname
376 [ "$mode" = "ap" ] || continue
377 hostapd_ctrl="${hostapd_ctrl:-/var/run/hostapd-$phy/$ifname}"
378 mac80211_start_vif "$vif" "$ifname"
379 done
380 }
381
382 for vif in $vifs; do
383 config_get mode "$vif" mode
384 config_get ifname "$vif" ifname
385 [ ! "$mode" = "ap" ] || continue
386 ifconfig "$ifname" up
387
388 if [ ! "$mode" = "ap" ]; then
389 ifconfig "$ifname" up
390 case "$mode" in
391 adhoc)
392 config_get bssid "$vif" bssid
393 config_get ssid "$vif" ssid
394 config_get bintval "$vif" bintval
395 config_get basicrates "$vif" basicrates
396 config_get encryption "$vif" encryption
397 config_get key "$vif" key 1
398 config_get mcast_rate "$vif" mcast_rate
399
400 local keyspec=""
401 [ "$encryption" == "wep" ] && {
402 case "$key" in
403 [1234])
404 local idx
405 for idx in 1 2 3 4; do
406 local ikey
407 config_get ikey "$vif" "key$idx"
408
409 [ -n "$ikey" ] && {
410 ikey="$(($idx - 1)):$(prepare_key_wep "$ikey")"
411 [ $idx -eq $key ] && ikey="d:$ikey"
412 append keyspec "$ikey"
413 }
414 ;;
415 *) append keyspec "d:0:$(prepare_key_wep "$key")" ;;
416 }
417
418 local mcval=""
419 [ -n "$mcast_rate" ] && {
420 mcval="$(($mcast_rate / 1000))"
421 mcsub="$(( ($mcast_rate / 100) % 10 ))"
422 [ "$mcsub" -gt 0 ] && mcval="$mcval.$mcsub"
423 }
424
425 iw dev "$ifname" ibss join "$ssid" $freq \
426 ${fixed:+fixed-freq} $bssid \
427 ${mcval:+mcast-rate $mcval} \
428 ${bintval:+beacon-interval $bintval} \
429 ${basicrates:+basic-rates $basicrates} \
430 ${keyspec:+keys $keyspec}
431 ;;
432 sta)
433 if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
434 wpa_supplicant_setup_vif "$vif" nl80211 "${hostapd_ctrl:+-H $hostapd_ctrl}" || {
435 echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2
436 # make sure this wifi interface won't accidentally stay open without encryption
437 ifconfig "$ifname" down
438 continue
439 }
440 fi
441 ;;
442 esac
443 mac80211_start_vif "$vif" "$ifname"
444 fi
445 done
446
447 }
448
449
450 check_device() {
451 config_get phy "$1" phy
452 [ -z "$phy" ] && {
453 find_mac80211_phy "$1" >/dev/null || return 0
454 config_get phy "$1" phy
455 }
456 [ "$phy" = "$dev" ] && found=1
457 }
458
459 detect_mac80211() {
460 devidx=0
461 config_load wireless
462 while :; do
463 config_get type "radio$devidx" type
464 [ -n "$type" ] || break
465 devidx=$(($devidx + 1))
466 done
467 for dev in $(ls /sys/class/ieee80211); do
468 found=0
469 config_foreach check_device wifi-device
470 [ "$found" -gt 0 ] && continue
471
472 mode_11n=""
473 mode_band="g"
474 channel="11"
475 ht_cap=0
476 for cap in $(iw phy "$dev" info | grep 'Capabilities:' | cut -d: -f2); do
477 ht_cap="$(($ht_cap | $cap))"
478 done
479 ht_capab="";
480 [ "$ht_cap" -gt 0 ] && {
481 mode_11n="n"
482 append ht_capab " option htmode HT20" "$N"
483
484 list=" list ht_capab"
485 [ "$(($ht_cap & 1))" -eq 1 ] && append ht_capab "$list LDPC" "$N"
486 [ "$(($ht_cap & 16))" -eq 16 ] && append ht_capab "$list GF" "$N"
487 [ "$(($ht_cap & 32))" -eq 32 ] && append ht_capab "$list SHORT-GI-20" "$N"
488 [ "$(($ht_cap & 64))" -eq 64 ] && append ht_capab "$list SHORT-GI-40" "$N"
489 [ "$(($ht_cap & 128))" -eq 128 ] && append ht_capab "$list TX-STBC" "$N"
490 [ "$(($ht_cap & 768))" -eq 256 ] && append ht_capab "$list RX-STBC1" "$N"
491 [ "$(($ht_cap & 768))" -eq 512 ] && append ht_capab "$list RX-STBC12" "$N"
492 [ "$(($ht_cap & 768))" -eq 768 ] && append ht_capab "$list RX-STBC123" "$N"
493 [ "$(($ht_cap & 4096))" -eq 4096 ] && append ht_capab "$list DSSS_CCK-40" "$N"
494 }
495 iw phy "$dev" info | grep -q '2412 MHz' || { mode_band="a"; channel="36"; }
496
497 cat <<EOF
498 config wifi-device radio$devidx
499 option type mac80211
500 option channel ${channel}
501 option macaddr $(cat /sys/class/ieee80211/${dev}/macaddress)
502 option hwmode 11${mode_11n}${mode_band}
503 $ht_capab
504 # REMOVE THIS LINE TO ENABLE WIFI:
505 option disabled 1
506
507 config wifi-iface
508 option device radio$devidx
509 option network lan
510 option mode ap
511 option ssid OpenWrt
512 option encryption none
513
514 EOF
515 devidx=$(($devidx + 1))
516 done
517 }
518