aboutsummaryrefslogtreecommitdiffstats
path: root/package/mac80211/files/lib/wifi/mac80211.sh
blob: 8f3ed4a25ad46be7d4e9fde18f168df64fb41dfb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
#!/bin/sh
append DRIVERS "mac80211"

scan_mac80211() {
	local device="$1"
	local adhoc sta ap

	config_get vifs "$device" vifs
	for vif in $vifs; do

		config_get ifname "$vif" ifname
		config_set "$vif" ifname "${ifname:-$device}"

		config_get mode "$vif" mode
		case "$mode" in
			adhoc|sta|ap|monitor)
				append $mode "$vif"
			;;
			*) echo "$device($vif): Invalid mode, ignored."; continue;;
		esac
	done

	config_set "$device" vifs "${ap:+$ap }${adhoc:+$adhoc }${ahdemo:+$ahdemo }${sta:+$sta }${wds:+$wds }${monitor:+$monitor}"
}


disable_mac80211() (
	local device="$1"

	set_wifi_down "$device"
	# kill all running hostapd and wpa_supplicant processes that
	# are running on atheros/mac80211 vifs
	for pid in `pidof hostapd wpa_supplicant`; do
		grep wlan /proc/$pid/cmdline >/dev/null && \
			kill $pid
	done

	include /lib/network
	cd /proc/sys/net
	for dev in *; do
		grep "$device" "$dev/%parent" >/dev/null 2>/dev/null && {
			ifconfig "$dev" down
			unbridge "$dev"
		}
	done
	return 0
)

enable_mac80211() {
	local device="$1"
	config_get channel "$device" channel
	config_get vifs "$device" vifs
	config_get txpower "$device" txpower

	local first=1
	for vif in $vifs; do
		ifconfig "$ifname" down 2>/dev/null
		config_get ifname "$vif" ifname
		config_get enc "$vif" encryption
		config_get eap_type "$vif" eap_type
		config_get mode "$vif" mode

		config_get ifname "$vif" ifname
		[ $? -ne 0 ] && {
			echo "enable_mac80211($device): Failed to set up $mode vif $ifname" >&2
			continue
		}
		config_set "$vif" ifname "$ifname"

		[ "$first" = 1 ] && {
			# only need to change freq band and channel on the first vif
			iwconfig "$ifname" channel "$channel" >/dev/null 2>/dev/null
			if [ "$mode" = adhoc ]; then
				iwlist "$ifname" scan >/dev/null 2>/dev/null
				sleep 1
				iwconfig "$ifname" mode ad-hoc >/dev/null 2>/dev/null
			fi
			sleep 1
			iwconfig "$ifname" channel "$channel" >/dev/null 2>/dev/null
		}
		if [ "$mode" = sta ]; then
			iwconfig "$ifname" mode managed >/dev/null 2>/dev/null
		else
			iwconfig "$ifname" mode $mode >/dev/null 2>/dev/null
		fi

		wpa=
		case "$enc" in
			WEP|wep)
				for idx in 1 2 3 4; do
					config_get key "$vif" "key${idx}"
					iwconfig "$ifname" enc "[$idx]" "${key:-off}"
				done
				config_get key "$vif" key
				key="${key:-1}"
				case "$key" in
					[1234]) iwconfig "$ifname" enc "[$key]";;
					*) iwconfig "$ifname" enc "$key";;
				esac
			;;
			PSK|psk|PSK2|psk2)
				config_get key "$vif" key
			;;
		esac

		case "$mode" in
			adhoc)
				config_get addr "$vif" bssid
				[ -z "$addr" ] || {
					iwconfig "$ifname" ap "$addr"
				}
			;;
		esac
		config_get ssid "$vif" ssid

		config_get vif_txpower "$vif" txpower
		# use vif_txpower (from wifi-iface) to override txpower (from
		# wifi-device) if the latter doesn't exist
		txpower="${txpower:-$vif_txpower}"
		[ -z "$txpower" ] || iwconfig "$ifname" txpower "${txpower%%.*}"

		config_get frag "$vif" frag
		if [ -n "$frag" ]; then
			iwconfig "$ifname" frag "${frag%%.*}"
		fi

		config_get rts "$vif" rts
		if [ -n "$rts" ]; then
			iwconfig "$ifname" rts "${rts%%.*}"
		fi

		ifconfig "$ifname" up
		iwconfig "$ifname" channel "$channel" >/dev/null 2>/dev/null

		local net_cfg bridge
		net_cfg="$(find_net_config "$vif")"
		[ -z "$net_cfg" ] || {
			bridge="$(bridge_interface "$net_cfg")"
			config_set "$vif" bridge "$bridge"
			start_net "$ifname" "$net_cfg"
		}
		iwconfig "$ifname" essid "$ssid"
		set_wifi_up "$vif" "$ifname"
		case "$mode" in
			ap)
				if eval "type hostapd_setup_vif" 2>/dev/null >/dev/null; then
					hostapd_setup_vif "$vif" nl80211 || {
						echo "enable_mac80211($device): Failed to set up wpa for interface $ifname" >&2
						# make sure this wifi interface won't accidentally stay open without encryption
						ifconfig "$ifname" down
						continue
					}
				fi
			;;
			sta)
				if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
					wpa_supplicant_setup_vif "$vif" wext || {
						echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2
						# make sure this wifi interface won't accidentally stay open without encryption
						ifconfig "$ifname" down
						continue
					}
				fi
			;;
		esac
		first=0
	done
}


detect_mac80211() {
	cd /sys/class/net
	for dev in $(ls -d wlan* 2>&-); do
		config_get type "$dev" type
		[ "$type" = mac80211 ] && return
		cat <<EOF
config wifi-device  $dev
	option type     mac80211
	option channel  5

	# REMOVE THIS LINE TO ENABLE WIFI:
	option disabled 1

config wifi-iface
	option device	$dev
	option network	lan
	option mode	ap
	option ssid	OpenWrt
	option encryption none
EOF
	done
}