mac80211: backport latest version from trunk as of r27395
[openwrt-10.03/.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                                         config_get htmode "$device" htmode
461                                         case "$htmode" in
462                                                 HT20|HT40+|HT40-) ;;
463                                                 *) htmode= ;;
464                                         esac
465
466                                         iw dev "$ifname" ibss join "$ssid" $freq $htmode \
467                                                 ${fixed:+fixed-freq} $bssid \
468                                                 ${beacon_int:+beacon-interval $beacon_int} \
469                                                 ${brstr:+basic-rates $brstr} \
470                                                 ${mcval:+mcast-rate $mcval} \
471                                                 ${keyspec:+keys $keyspec}
472                                 ;;
473                                 sta)
474                                         if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
475                                                 wpa_supplicant_setup_vif "$vif" nl80211 "${hostapd_ctrl:+-H $hostapd_ctrl}" || {
476                                                         echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2
477                                                         # make sure this wifi interface won't accidentally stay open without encryption
478                                                         ifconfig "$ifname" down
479                                                         continue
480                                                 }
481                                         fi
482                                 ;;
483                         esac
484                         mac80211_start_vif "$vif" "$ifname"
485                 fi
486         done
487
488 }
489
490
491 check_mac80211_device() {
492         config_get phy "$1" phy
493         [ -z "$phy" ] && {
494                 find_mac80211_phy "$1" >/dev/null || return 0
495                 config_get phy "$1" phy
496         }
497         [ "$phy" = "$dev" ] && found=1
498 }
499
500 detect_mac80211() {
501         devidx=0
502         config_load wireless
503         while :; do
504                 config_get type "radio$devidx" type
505                 [ -n "$type" ] || break
506                 devidx=$(($devidx + 1))
507         done
508         for dev in $(ls /sys/class/ieee80211); do
509                 found=0
510                 config_foreach check_mac80211_device wifi-device
511                 [ "$found" -gt 0 ] && continue
512
513                 mode_11n=""
514                 mode_band="g"
515                 channel="11"
516                 ht_cap=0
517                 for cap in $(iw phy "$dev" info | grep 'Capabilities:' | cut -d: -f2); do
518                         ht_cap="$(($ht_cap | $cap))"
519                 done
520                 ht_capab="";
521                 [ "$ht_cap" -gt 0 ] && {
522                         mode_11n="n"
523                         append ht_capab "       option htmode   HT20" "$N"
524
525                         list="  list ht_capab"
526                         [ "$(($ht_cap & 1))" -eq 1 ] && append ht_capab "$list  LDPC" "$N"
527                         [ "$(($ht_cap & 16))" -eq 16 ] && append ht_capab "$list        GF" "$N"
528                         [ "$(($ht_cap & 32))" -eq 32 ] && append ht_capab "$list        SHORT-GI-20" "$N"
529                         [ "$(($ht_cap & 64))" -eq 64 ] && append ht_capab "$list        SHORT-GI-40" "$N"
530                         [ "$(($ht_cap & 128))" -eq 128 ] && append ht_capab "$list      TX-STBC" "$N"
531                         [ "$(($ht_cap & 768))" -eq 256 ] && append ht_capab "$list      RX-STBC1" "$N"
532                         [ "$(($ht_cap & 768))" -eq 512 ] && append ht_capab "$list      RX-STBC12" "$N"
533                         [ "$(($ht_cap & 768))" -eq 768 ] && append ht_capab "$list      RX-STBC123" "$N"
534                         [ "$(($ht_cap & 4096))" -eq 4096 ] && append ht_capab "$list    DSSS_CCK-40" "$N"
535                 }
536                 iw phy "$dev" info | grep -q '2412 MHz' || { mode_band="a"; channel="36"; }
537
538                 cat <<EOF
539 config wifi-device  radio$devidx
540         option type     mac80211
541         option channel  ${channel}
542         option macaddr  $(cat /sys/class/ieee80211/${dev}/macaddress)
543         option hwmode   11${mode_11n}${mode_band}
544 $ht_capab
545         # REMOVE THIS LINE TO ENABLE WIFI:
546         option disabled 1
547
548 config wifi-iface
549         option device   radio$devidx
550         option network  lan
551         option mode     ap
552         option ssid     OpenWrt
553         option encryption none
554
555 EOF
556         devidx=$(($devidx + 1))
557         done
558 }
559