bc6cc1449a441385292767033e95fafdb7ee6b63
[openwrt.git] / package / mac80211 / files / lib / wifi / mac80211.sh
1 #!/bin/sh
2 append DRIVERS "mac80211"
3
4 find_mac80211_phy() {
5 config_get device "$1"
6
7 local macaddr="$(config_get "$device" macaddr | tr 'A-Z' 'a-z')"
8 config_get phy "$device" phy
9 [ -z "$phy" -a -n "$macaddr" ] && {
10 for phy in $(ls /sys/class/ieee80211 2>/dev/null); do
11 [ "$macaddr" = "$(cat /sys/class/ieee80211/${phy}/macaddress)" ] || continue
12 config_set "$device" phy "$phy"
13 break
14 done
15 config_get phy "$device" phy
16 }
17 [ -n "$phy" -a -d "/sys/class/ieee80211/$phy" ] || {
18 echo "PHY for wifi device $1 not found"
19 return 1
20 }
21 [ -z "$macaddr" ] && {
22 config_set "$device" macaddr "$(cat /sys/class/ieee80211/${phy}/macaddress)"
23 }
24 return 0
25 }
26
27 scan_mac80211() {
28 local device="$1"
29 local adhoc sta ap monitor mesh
30
31 config_get vifs "$device" vifs
32 for vif in $vifs; do
33 config_get mode "$vif" mode
34 case "$mode" in
35 adhoc|sta|ap|monitor|mesh)
36 append $mode "$vif"
37 ;;
38 *) echo "$device($vif): Invalid mode, ignored."; continue;;
39 esac
40 done
41
42 config_set "$device" vifs "${ap:+$ap }${adhoc:+$adhoc }${sta:+$sta }${monitor:+$monitor }${mesh:+$mesh}"
43 }
44
45
46 disable_mac80211() (
47 local device="$1"
48
49 find_mac80211_phy "$device" || return 0
50 config_get phy "$device" phy
51
52 set_wifi_down "$device"
53 # kill all running hostapd and wpa_supplicant processes that
54 # are running on atheros/mac80211 vifs
55 for pid in `pidof hostapd wpa_supplicant`; do
56 grep wlan /proc/$pid/cmdline >/dev/null && \
57 kill $pid
58 done
59
60 include /lib/network
61 for wdev in $(ls /sys/class/ieee80211/${phy}/device/net 2>/dev/null); do
62 ifconfig "$wdev" down 2>/dev/null
63 unbridge "$dev"
64 iw dev "$wdev" del
65 done
66
67 return 0
68 )
69 get_freq() {
70 local phy="$1"
71 local chan="$2"
72 iw "$phy" info | grep -E -m1 "(\* ${chan:-....} MHz${chan:+|\\[$chan\\]})" | grep MHz | awk '{print $2}'
73 }
74 enable_mac80211() {
75 local device="$1"
76 config_get channel "$device" channel
77 config_get vifs "$device" vifs
78 config_get txpower "$device" txpower
79 find_mac80211_phy "$device" || return 0
80 config_get phy "$device" phy
81 local i=0
82 fixed=""
83
84 [ "$channel" = "auto" -o "$channel" = "0" ] || {
85 fixed=1
86 }
87
88 export channel fixed
89 # convert channel to frequency
90 local freq="$(get_freq "$phy" "${fixed:+$channel}")"
91
92 wifi_fixup_hwmode "$device" "g"
93 for vif in $vifs; do
94 while [ -d "/sys/class/net/wlan$i" ]; do
95 i=$(($i + 1))
96 done
97
98 config_get ifname "$vif" ifname
99 [ -n "$ifname" ] || {
100 ifname="wlan$i"
101 }
102 config_set "$vif" ifname "$ifname"
103
104 config_get enc "$vif" encryption
105 config_get mode "$vif" mode
106 config_get ssid "$vif" ssid
107 config_get_bool wds "$vif" wds 0
108
109 # It is far easier to delete and create the desired interface
110 case "$mode" in
111 adhoc)
112 iw phy "$phy" interface add "$ifname" type adhoc
113 ;;
114 ap)
115 # Hostapd will handle recreating the interface and
116 # it's accompanying monitor
117 iw phy "$phy" interface add "$ifname" type managed
118 ;;
119 mesh)
120 config_get mesh_id "$vif" mesh_id
121 iw phy "$phy" interface add "$ifname" type mp mesh_id "$mesh_id"
122 ;;
123 monitor)
124 iw phy "$phy" interface add "$ifname" type monitor
125 ;;
126 sta)
127 local wdsflag
128 [ "$wds" -gt 0 ] && wdsflag="4addr on"
129 iw phy "$phy" interface add "$ifname" type managed $wdsflag
130 config_get_bool powersave "$vif" powersave 0
131 [ "$powersave" -gt 0 ] && powersave="on" || powersave="off"
132 iwconfig "$ifname" power "$powersave"
133 ;;
134 esac
135
136 # All interfaces must have unique mac addresses
137 # which can either be explicitly set in the device
138 # section, or automatically generated
139 config_get macaddr "$device" macaddr
140 local mac_1="${macaddr%%:*}"
141 local mac_2="${macaddr#*:}"
142
143 config_get vif_mac "$vif" macaddr
144 [ -n "$vif_mac" ] || {
145 if [ "$i" -gt 0 ]; then
146 offset="$(( 2 + $i * 4 ))"
147 else
148 offset="0"
149 fi
150 vif_mac="$( printf %02x $(($mac_1 + $offset)) ):$mac_2"
151 }
152 ifconfig "$ifname" hw ether "$vif_mac"
153
154 # We attempt to set teh channel for all interfaces, although
155 # mac80211 may not support it or the driver might not yet
156 [ -n "$fixed" -a -n "$channel" ] && iw dev "$ifname" set channel "$channel"
157
158 local key keystring
159
160 # Valid values are:
161 # wpa / wep / none
162 #
163 # !! ap !!
164 #
165 # ALL ap functionality will be passed to hostapd
166 #
167 # !! mesh / adhoc / station !!
168 # none -> NO encryption
169 #
170 # wep + keymgmt = '' -> we use iw to connect to the
171 # network.
172 #
173 # wep + keymgmt = 'NONE' -> wpa_supplicant will be
174 # configured to handle the wep connection
175 if [ ! "$mode" = "ap" ]; then
176 case "$enc" in
177 wep)
178 config_get keymgmt "$vif" keymgmt
179 if [ -e "$keymgmt" ]; then
180 for idx in 1 2 3 4; do
181 local zidx
182 zidx = idx - 1
183 config_get key "$vif" "key${idx}"
184 if [ -n "$key" ]; then
185 append keystring "${zidx}:${key} "
186 fi
187 done
188 fi
189 ;;
190 wpa)
191 config_get key "$vif" key
192 ;;
193 esac
194 fi
195
196 # txpower is not yet implemented in iw
197 config_get vif_txpower "$vif" txpower
198 # use vif_txpower (from wifi-iface) to override txpower (from
199 # wifi-device) if the latter doesn't exist
200 txpower="${txpower:-$vif_txpower}"
201 [ -z "$txpower" ] || iwconfig "$ifname" txpower "${txpower%%.*}"
202
203 config_get frag "$vif" frag
204 if [ -n "$frag" ]; then
205 iw phy "$phy" set frag "${frag%%.*}"
206 fi
207
208 config_get rts "$vif" rts
209 if [ -n "$rts" ]; then
210 iw phy "$phy" set rts "${frag%%.*}"
211 fi
212
213 ifconfig "$ifname" up
214
215 local net_cfg bridge
216 net_cfg="$(find_net_config "$vif")"
217 [ -z "$net_cfg" ] || {
218 bridge="$(bridge_interface "$net_cfg")"
219 config_set "$vif" bridge "$bridge"
220 start_net "$ifname" "$net_cfg"
221 }
222
223 set_wifi_up "$vif" "$ifname"
224 case "$mode" in
225 ap)
226 if eval "type hostapd_setup_vif" 2>/dev/null >/dev/null; then
227 hostapd_setup_vif "$vif" nl80211 || {
228 echo "enable_mac80211($device): Failed to set up wpa for interface $ifname" >&2
229 # make sure this wifi interface won't accidentally stay open without encryption
230 ifconfig "$ifname" down
231 continue
232 }
233 fi
234 ;;
235 adhoc)
236 config_get bssid "$vif" bssid
237 iw dev "$ifname" ibss join "$ssid" $freq ${fixed:+fixed-freq} $bssid
238 ;;
239 sta|mesh)
240 config_get bssid "$vif" bssid
241 case "$enc" in
242 wep)
243 if [ -e "$keymgmt" ]; then
244 [ -n "$keystring" ] &&
245 iw dev "$ifname" connect "$ssid" ${fixed:+$freq} $bssid key "$keystring"
246 else
247 if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
248 wpa_supplicant_setup_vif "$vif" wext || {
249 echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2
250 # make sure this wifi interface won't accidentally stay open without encryption
251 ifconfig "$ifname" down
252 continue
253 }
254 fi
255 fi
256 ;;
257 wpa*|psk*)
258 config_get key "$vif" key
259 if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
260 wpa_supplicant_setup_vif "$vif" wext || {
261 echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2
262 # make sure this wifi interface won't accidentally stay open without encryption
263 ifconfig "$ifname" down
264 continue
265 }
266 fi
267 ;;
268 *)
269 iw dev "$ifname" connect "$ssid" ${fixed:+$freq} $bssid
270 ;;
271 esac
272
273 ;;
274 esac
275 done
276 }
277
278
279 check_device() {
280 config_get phy "$1" phy
281 [ -z "$phy" ] && {
282 find_mac80211_phy "$1" || return 0
283 config_get phy "$1" phy
284 }
285 [ "$phy" = "$dev" ] && found=1
286 }
287
288 detect_mac80211() {
289 devidx=0
290 config_load wireless
291 while :; do
292 config_get type "wifi$devidx" type
293 [ -n "$type" ] || break
294 devidx=$(($devidx + 1))
295 done
296 for dev in $(ls /sys/class/ieee80211); do
297 found=0
298 config_foreach check_device wifi-device
299 [ "$found" -gt 0 ] && continue
300
301 mode_11n=""
302 mode_band="g"
303 channel="5"
304 ht_cap=0
305 for cap in $(iw phy "$dev" info | grep 'HT capabilities' | cut -d: -f2); do
306 ht_cap="$(($ht_cap | $cap))"
307 done
308 ht_capab="";
309 [ "$ht_cap" -gt 0 ] && {
310 mode_11n="n"
311 list=" list ht_capab"
312 [ "$(($ht_cap & 1))" -eq 1 ] && append ht_capab "$list LDPC" "$N"
313 [ "$(($ht_cap & 2))" -eq 2 ] && append ht_capab "$list HT40-" "$N"
314 [ "$(($ht_cap & 32))" -eq 32 ] && append ht_capab "$list SHORT-GI-20" "$N"
315 [ "$(($ht_cap & 64))" -eq 64 ] && append ht_capab "$list SHORT-GI-40" "$N"
316 [ "$(($ht_cap & 4096))" -eq 4096 ] && append ht_capab "$list DSSS_CCK-40" "$N"
317 }
318 iw phy "$dev" info | grep -q '2412 MHz' || { mode_band="a"; channel="36"; }
319
320 cat <<EOF
321 config wifi-device wifi$devidx
322 option type mac80211
323 option channel ${channel}
324 option macaddr $(cat /sys/class/ieee80211/${dev}/macaddress)
325 option hwmode 11${mode_11n}${mode_band}
326 # REMOVE THIS LINE TO ENABLE WIFI:
327 option disabled 1
328 $ht_capab
329
330 config wifi-iface
331 option device wifi$devidx
332 option network lan
333 option mode ap
334 option ssid OpenWrt
335 option encryption none
336
337 EOF
338 devidx=$(($devidx + 1))
339 done
340 }
341
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