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