mac80211: upgrade to latest compat-wireless, fix ad-hoc interface setup
[openwrt/svn-archive/archive.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 channel="$2"
72 iw "$phy" info | grep -E -m1 "(\* ${channel:-....} MHz${channel:+|\\[$channel\\]})" | 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
83 # convert channel to frequency
84 local freq="$(get_freq "$phy" "$channel")"
85
86 wifi_fixup_hwmode "$device" "g"
87 for vif in $vifs; do
88 while [ -d "/sys/class/net/wlan$i" ]; do
89 i=$(($i + 1))
90 done
91
92 config_get ifname "$vif" ifname
93 [ -n "$ifname" ] || {
94 ifname="wlan$i"
95 }
96 config_set "$vif" ifname "$ifname"
97
98 config_get enc "$vif" encryption
99 config_get mode "$vif" mode
100 config_get ssid "$vif" ssid
101
102 # It is far easier to delete and create the desired interface
103 case "$mode" in
104 adhoc)
105 iw phy "$phy" interface add "$ifname" type adhoc
106 ;;
107 ap)
108 # Hostapd will handle recreating the interface and
109 # it's accompanying monitor
110 iw phy "$phy" interface add "$ifname" type managed
111 ;;
112 mesh)
113 config_get mesh_id "$vif" mesh_id
114 iw phy "$phy" interface add "$ifname" type mp mesh_id "$mesh_id"
115 ;;
116 monitor)
117 iw phy "$phy" interface add "$ifname" type monitor
118 ;;
119 sta)
120 iw phy "$phy" interface add "$ifname" type managed
121 ;;
122 esac
123
124 # All interfaces must have unique mac addresses
125 # which can either be explicitly set in the device
126 # section, or automatically generated
127 config_get macaddr "$device" macaddr
128 local mac_1="${macaddr%%:*}"
129 local mac_2="${macaddr#*:}"
130
131 config_get vif_mac "$vif" macaddr
132 [ -n "$vif_mac" ] || {
133 if [ "$i" -gt 0 ]; then
134 offset="$(( 2 + $i * 4 ))"
135 else
136 offset="0"
137 fi
138 vif_mac="$( printf %02x $(($mac_1 + $offset)) ):$mac_2"
139 }
140 ifconfig "$ifname" hw ether "$vif_mac"
141
142 # We attempt to set teh channel for all interfaces, although
143 # mac80211 may not support it or the driver might not yet
144 [ -z "$channel" ] || iw dev "$ifname" set channel "$channel"
145
146 local key keystring
147
148 # Valid values are:
149 # wpa / wep / none
150 #
151 # !! ap !!
152 #
153 # ALL ap functionality will be passed to hostapd
154 #
155 # !! mesh / adhoc / station !!
156 # none -> NO encryption
157 #
158 # wep + keymgmt = '' -> we use iw to connect to the
159 # network.
160 #
161 # wep + keymgmt = 'NONE' -> wpa_supplicant will be
162 # configured to handle the wep connection
163 if [ ! "$mode" = "ap" ]; then
164 case "$enc" in
165 wep)
166 config_get keymgmt "$vif" keymgmt
167 if [ -e "$keymgmt" ]; then
168 for idx in 1 2 3 4; do
169 local zidx
170 zidx = idx - 1
171 config_get key "$vif" "key${idx}"
172 if [ -n "$key" ]; then
173 append keystring "${zidx}:${key} "
174 fi
175 done
176 fi
177 ;;
178 wpa)
179 config_get key "$vif" key
180 ;;
181 esac
182 fi
183
184 # txpower is not yet implemented in iw
185 config_get vif_txpower "$vif" txpower
186 # use vif_txpower (from wifi-iface) to override txpower (from
187 # wifi-device) if the latter doesn't exist
188 txpower="${txpower:-$vif_txpower}"
189 [ -z "$txpower" ] || iwconfig "$ifname" txpower "${txpower%%.*}"
190
191 config_get frag "$vif" frag
192 if [ -n "$frag" ]; then
193 iw phy "$phy" set frag "${frag%%.*}"
194 fi
195
196 config_get rts "$vif" rts
197 if [ -n "$rts" ]; then
198 iw phy "$phy" set rts "${frag%%.*}"
199 fi
200
201 ifconfig "$ifname" up
202
203 local net_cfg bridge
204 net_cfg="$(find_net_config "$vif")"
205 [ -z "$net_cfg" ] || {
206 bridge="$(bridge_interface "$net_cfg")"
207 config_set "$vif" bridge "$bridge"
208 start_net "$ifname" "$net_cfg"
209 }
210
211 set_wifi_up "$vif" "$ifname"
212 case "$mode" in
213 ap)
214 if eval "type hostapd_setup_vif" 2>/dev/null >/dev/null; then
215 hostapd_setup_vif "$vif" nl80211 || {
216 echo "enable_mac80211($device): Failed to set up wpa for interface $ifname" >&2
217 # make sure this wifi interface won't accidentally stay open without encryption
218 ifconfig "$ifname" down
219 continue
220 }
221 fi
222 ;;
223 adhoc)
224 config_get bssid "$vif" bssid
225 iw dev "$ifname" ibss join "$ssid" ${freq:+$freq fixed-freq} $bssid
226 ;;
227 sta|mesh)
228 # Fixup... sometimes you have to scan to get beaconing going
229 iw dev "$ifname" scan &> /dev/null
230 case "$enc" in
231 wep)
232 if [ -e "$keymgmt" ]; then
233 [ -n "$keystring" ] &&
234 iw dev "$ifname" connect "$ssid" key "$keystring"
235 else
236 if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
237 wpa_supplicant_setup_vif "$vif" wext || {
238 echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2
239 # make sure this wifi interface won't accidentally stay open without encryption
240 ifconfig "$ifname" down
241 continue
242 }
243 fi
244 fi
245 ;;
246 wpa)
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 ;;
256 esac
257
258 ;;
259 esac
260 done
261 }
262
263
264 check_device() {
265 config_get phy "$1" phy
266 [ -z "$phy" ] && {
267 find_mac80211_phy "$1" || return 0
268 config_get phy "$1" phy
269 }
270 [ "$phy" = "$dev" ] && found=1
271 }
272
273 detect_mac80211() {
274 devidx=0
275 config_load wireless
276 for dev in $(ls /sys/class/ieee80211); do
277 found=0
278 config_foreach check_device wifi-device
279 [ "$found" -gt 0 ] && continue
280
281 while :; do
282 config_get type "wifi$devidx" type
283 [ -n "$type" ] || break
284 devidx=$(($devidx + 1))
285 done
286 mode_11n=""
287 mode_band="g"
288 iw phy "$dev" info | grep -q 'HT cap' && mode_11n="n"
289 iw phy "$dev" info | grep -q '2412 MHz' || mode_band="a"
290
291 cat <<EOF
292 config wifi-device wifi$devidx
293 option type mac80211
294 option channel 5
295 option macaddr $(cat /sys/class/ieee80211/${dev}/macaddress)
296 option hwmode 11${mode_11n}${mode_band}
297 # REMOVE THIS LINE TO ENABLE WIFI:
298 option disabled 1
299
300 config wifi-iface
301 option device wifi$devidx
302 option network lan
303 option mode ap
304 option ssid OpenWrt
305 option encryption none
306
307 EOF
308 done
309 }
310