251c2f13d8df929f54a929650a700548cc0725ef
[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 frag "$device" frag
243 config_get rts "$device" rts
244 find_mac80211_phy "$device" || return 0
245 config_get phy "$device" phy
246 local i=0
247 local macidx=0
248 local apidx=0
249 fixed=""
250 local hostapd_ctrl=""
251
252 [ -n "$country" ] && iw reg set "$country"
253 [ "$channel" = "auto" -o "$channel" = "0" ] || {
254 fixed=1
255 }
256
257 [ -n "$distance" ] && iw phy "$phy" set distance "$distance"
258 [ -n "$frag" ] && iw phy "$phy" set frag "${frag%%.*}"
259 [ -n "$rts" ] && iw phy "$phy" set rts "${rts%%.*}"
260
261 export channel fixed
262 # convert channel to frequency
263 local freq="$(get_freq "$phy" "${fixed:+$channel}")"
264
265 wifi_fixup_hwmode "$device" "g"
266 for vif in $vifs; do
267 while [ -d "/sys/class/net/wlan$i" ]; do
268 i=$(($i + 1))
269 done
270
271 config_get ifname "$vif" ifname
272 [ -n "$ifname" ] || {
273 ifname="wlan$i"
274 }
275 config_set "$vif" ifname "$ifname"
276
277 config_get mode "$vif" mode
278 config_get ssid "$vif" ssid
279
280 # It is far easier to delete and create the desired interface
281 case "$mode" in
282 adhoc)
283 iw phy "$phy" interface add "$ifname" type adhoc
284 ;;
285 ap)
286 # Hostapd will handle recreating the interface and
287 # it's accompanying monitor
288 apidx="$(($apidx + 1))"
289 i=$(($i + 1))
290 [ "$apidx" -gt 1 ] || iw phy "$phy" interface add "$ifname" type managed
291 ;;
292 mesh)
293 config_get mesh_id "$vif" mesh_id
294 iw phy "$phy" interface add "$ifname" type mp mesh_id "$mesh_id"
295 ;;
296 monitor)
297 iw phy "$phy" interface add "$ifname" type monitor
298 ;;
299 sta)
300 local wdsflag
301 config_get_bool wds "$vif" wds 0
302 [ "$wds" -gt 0 ] && wdsflag="4addr on"
303 iw phy "$phy" interface add "$ifname" type managed $wdsflag
304 config_get_bool powersave "$vif" powersave 0
305 [ "$powersave" -gt 0 ] && powersave="on" || powersave="off"
306 iwconfig "$ifname" power "$powersave"
307 ;;
308 esac
309
310 # All interfaces must have unique mac addresses
311 # which can either be explicitly set in the device
312 # section, or automatically generated
313 config_get macaddr "$device" macaddr
314 local mac_1="${macaddr%%:*}"
315 local mac_2="${macaddr#*:}"
316
317 config_get vif_mac "$vif" macaddr
318 [ -n "$vif_mac" ] || {
319 if [ "$macidx" -gt 0 ]; then
320 offset="$(( 2 + $macidx * 4 ))"
321 else
322 offset="0"
323 fi
324 vif_mac="$( printf %02x $((0x$mac_1 + $offset)) ):$mac_2"
325 macidx="$(($macidx + 1))"
326 }
327 [ "$mode" = "ap" ] || ifconfig "$ifname" hw ether "$vif_mac"
328 config_set "$vif" macaddr "$vif_mac"
329
330 # !! ap !!
331 #
332 # ALL ap functionality will be passed to hostapd
333 #
334 # !! station !!
335 #
336 # ALL station functionality will be passed to wpa_supplicant
337 #
338 if [ ! "$mode" = "ap" ]; then
339 # We attempt to set the channel for all interfaces, although
340 # mac80211 may not support it or the driver might not yet
341 # for ap mode this is handled by hostapd
342 [ -n "$fixed" -a -n "$channel" ] && iw dev "$ifname" set channel "$channel"
343 fi
344
345 config_get vif_txpower "$vif" txpower
346 # use vif_txpower (from wifi-iface) to override txpower (from
347 # wifi-device) if the latter doesn't exist
348 txpower="${txpower:-$vif_txpower}"
349 [ -z "$txpower" ] || iw dev "$ifname" set txpower fixed "${txpower%%.*}00"
350 done
351
352 local start_hostapd=
353 rm -f /var/run/hostapd-$phy.conf
354 for vif in $vifs; do
355 config_get mode "$vif" mode
356 [ "$mode" = "ap" ] || continue
357 mac80211_hostapd_setup_bss "$phy" "$vif"
358 start_hostapd=1
359 done
360
361 [ -n "$start_hostapd" ] && {
362 hostapd -P /var/run/wifi-$phy.pid -B /var/run/hostapd-$phy.conf || {
363 echo "Failed to start hostapd for $phy"
364 return
365 }
366 sleep 2
367
368 for vif in $vifs; do
369 config_get mode "$vif" mode
370 config_get ifname "$vif" ifname
371 [ "$mode" = "ap" ] || continue
372 hostapd_ctrl="${hostapd_ctrl:-/var/run/hostapd-$phy/$ifname}"
373 mac80211_start_vif "$vif" "$ifname"
374 done
375 }
376
377 for vif in $vifs; do
378 config_get mode "$vif" mode
379 config_get ifname "$vif" ifname
380 [ ! "$mode" = "ap" ] || continue
381 ifconfig "$ifname" up
382
383 if [ ! "$mode" = "ap" ]; then
384 ifconfig "$ifname" up
385 case "$mode" in
386 adhoc)
387 config_get bssid "$vif" bssid
388 config_get ssid "$vif" ssid
389 config_get mcast_rate "$vif" mcast_rate
390 local mcval=""
391 [ -n "$mcast_rate" ] && {
392 mcval="$(($mcast_rate / 1000))"
393 mcsub="$(( ($mcast_rate / 100) % 10 ))"
394 [ "$mcsub" -gt 0 ] && mcval="$mcval.$mcsub"
395 }
396 iw dev "$ifname" ibss join "$ssid" $freq ${fixed:+fixed-freq} $bssid ${mcval:+mcast-rate $mcval}
397 ;;
398 sta)
399 if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
400 wpa_supplicant_setup_vif "$vif" nl80211 "${hostapd_ctrl:+-H $hostapd_ctrl}" || {
401 echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2
402 # make sure this wifi interface won't accidentally stay open without encryption
403 ifconfig "$ifname" down
404 continue
405 }
406 fi
407 ;;
408 esac
409 mac80211_start_vif "$vif" "$ifname"
410 fi
411 done
412
413 }
414
415
416 check_device() {
417 config_get phy "$1" phy
418 [ -z "$phy" ] && {
419 find_mac80211_phy "$1" >/dev/null || return 0
420 config_get phy "$1" phy
421 }
422 [ "$phy" = "$dev" ] && found=1
423 }
424
425 detect_mac80211() {
426 devidx=0
427 config_load wireless
428 while :; do
429 config_get type "radio$devidx" type
430 [ -n "$type" ] || break
431 devidx=$(($devidx + 1))
432 done
433 for dev in $(ls /sys/class/ieee80211); do
434 found=0
435 config_foreach check_device wifi-device
436 [ "$found" -gt 0 ] && continue
437
438 mode_11n=""
439 mode_band="g"
440 channel="11"
441 ht_cap=0
442 for cap in $(iw phy "$dev" info | grep 'Capabilities:' | cut -d: -f2); do
443 ht_cap="$(($ht_cap | $cap))"
444 done
445 ht_capab="";
446 [ "$ht_cap" -gt 0 ] && {
447 mode_11n="n"
448 append ht_capab " option htmode HT20" "$N"
449
450 list=" list ht_capab"
451 [ "$(($ht_cap & 1))" -eq 1 ] && append ht_capab "$list LDPC" "$N"
452 [ "$(($ht_cap & 16))" -eq 16 ] && append ht_capab "$list GF" "$N"
453 [ "$(($ht_cap & 32))" -eq 32 ] && append ht_capab "$list SHORT-GI-20" "$N"
454 [ "$(($ht_cap & 64))" -eq 64 ] && append ht_capab "$list SHORT-GI-40" "$N"
455 [ "$(($ht_cap & 128))" -eq 128 ] && append ht_capab "$list TX-STBC" "$N"
456 [ "$(($ht_cap & 768))" -eq 256 ] && append ht_capab "$list RX-STBC1" "$N"
457 [ "$(($ht_cap & 768))" -eq 512 ] && append ht_capab "$list RX-STBC12" "$N"
458 [ "$(($ht_cap & 768))" -eq 768 ] && append ht_capab "$list RX-STBC123" "$N"
459 [ "$(($ht_cap & 4096))" -eq 4096 ] && append ht_capab "$list DSSS_CCK-40" "$N"
460 }
461 iw phy "$dev" info | grep -q '2412 MHz' || { mode_band="a"; channel="36"; }
462
463 cat <<EOF
464 config wifi-device radio$devidx
465 option type mac80211
466 option channel ${channel}
467 option macaddr $(cat /sys/class/ieee80211/${dev}/macaddress)
468 option hwmode 11${mode_11n}${mode_band}
469 $ht_capab
470 # REMOVE THIS LINE TO ENABLE WIFI:
471 option disabled 1
472
473 config wifi-iface
474 option device radio$devidx
475 option network lan
476 option mode ap
477 option ssid OpenWrt
478 option encryption none
479
480 EOF
481 devidx=$(($devidx + 1))
482 done
483 }
484