summaryrefslogtreecommitdiff
path: root/package/kernel/broadcom-wl/files/lib/wifi/broadcom.sh
blob: deb4ddf1d2dd3413f154d11edcfdaf339f33c616 (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
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
append DRIVERS "broadcom"

scan_broadcom() {
	local device="$1"
	local vif vifs wds
	local adhoc sta apmode mon disabled
	local adhoc_if sta_if ap_if mon_if

	config_get vifs "$device" vifs
	for vif in $vifs; do
		config_get_bool disabled "$vif" disabled 0
		[ $disabled -eq 0 ] || continue

		local mode
		config_get mode "$vif" mode
		case "$mode" in
			adhoc)
				adhoc=1
				adhoc_if="$vif"
			;;
			sta)
				sta=1
				sta_if="$vif"
			;;
			ap)
				apmode=1
				ap_if="${ap_if:+$ap_if }$vif"
			;;
			wds)
				local addr
				config_get addr "$vif" bssid
				[ -z "$addr" ] || {
					addr=$(echo "$addr" | tr 'A-F' 'a-f')
					append wds "$addr"
				}
			;;
			monitor)
				mon=1
				mon_if="$vif"
			;;
			*) echo "$device($vif): Invalid mode";;
		esac
	done
	config_set "$device" wds "$wds"

	local _c=
	for vif in ${adhoc_if:-$sta_if $ap_if $mon_if}; do
		config_set "$vif" ifname "${device}${_c:+-$_c}"
		_c=$((${_c:-0} + 1))
	done
	config_set "$device" vifs "${adhoc_if:-$sta_if $ap_if $mon_if}"

	ap=1
	infra=1
	if [ "$_c" -gt 1 ]; then
		mssid=1
	else
		mssid=
	fi
	apsta=0
	radio=1
	monitor=0
	case "$adhoc:$sta:$apmode:$mon" in
		1*)
			ap=0
			mssid=
			infra=0
		;;
		:1:1:)
			apsta=1
			wet=1
		;;
		:1::)
			wet=1
			ap=0
			mssid=
		;;
		:::1)
			wet=1
			ap=0
			mssid=
			monitor=1
		;;
		::)
			radio=0
		;;
	esac
}

disable_broadcom() {
	local device="$1"
	set_wifi_down "$device"
	(
		include /lib/network

		local pid_file=/var/run/nas.$device.pid
		[ -e $pid_file ] && start-stop-daemon -K -q -s SIGKILL -p $pid_file && rm $pid_file

		# make sure the interfaces are down and removed from all bridges
		local dev ifname
		for dev in /sys/class/net/wds${device##wl}-* /sys/class/net/${device}-* /sys/class/net/${device}; do
			if [ -e "$dev" ]; then
				ifname=${dev##/sys/class/net/}
				ip link set dev "$ifname" down
				unbridge "$ifname"
			fi
		done

		# make sure all of the devices are disabled in the driver
		local ifdown=
		local bssmax=$(wlc ifname "$device" bssmax)
		local vif=$((${bssmax:-4} - 1))
		append ifdown "down" "$N"
		append ifdown "wds none" "$N"
		while [ $vif -ge 0 ]; do
			append ifdown "vif $vif" "$N"
			append ifdown "enabled 0" "$N"
			vif=$(($vif - 1))
		done

		wlc ifname "$device" stdin <<EOF
$ifdown
leddc 0xffff
EOF
	)
	true
}

enable_broadcom() {
	local device="$1"
	local channel country maxassoc wds vifs distance slottime rxantenna txantenna
	local frameburst macfilter maclist macaddr txpower frag rts hwmode htmode
	config_get channel "$device" channel
	config_get country "$device" country
	config_get maxassoc "$device" maxassoc
	config_get wds "$device" wds
	config_get vifs "$device" vifs
	config_get distance "$device" distance
	config_get slottime "$device" slottime
	config_get rxantenna "$device" rxantenna
	config_get txantenna "$device" txantenna
	config_get_bool frameburst "$device" frameburst
	config_get macfilter "$device" macfilter
	config_get maclist "$device" maclist
	config_get macaddr "$device" macaddr $(wlc ifname "$device" default_bssid)
	config_get txpower "$device" txpower
	config_get frag "$device" frag
	config_get rts "$device" rts
	config_get hwmode "$device" hwmode
	config_get htmode "$device" htmode
	local doth=0
	local wmm=1

	[ -z "$slottime" ] && {
		[ -n "$distance" ] && {
			# slottime = 9 + (distance / 150) + (distance % 150 ? 1 : 0)
			slottime="$((9 + ($distance / 150) + 1 - (150 - ($distance % 150)) / 150 ))"
		}
	} || {
		slottime="${slottime:--1}"
	}

	case "$macfilter" in
		allow|2)
			macfilter=2;
		;;
		deny|1)
			macfilter=1;
		;;
		disable|none|0)
			macfilter=0;
		;;
	esac

	local gmode=2 nmode=0 nreqd=
	case "$hwmode" in
		*a)	gmode=;;
		*b)	gmode=0;;
		*bg)	gmode=1;;
		*g)	gmode=2;;
		*gst)	gmode=4;;
		*lrs)	gmode=5;;
		*)	nmode=1; nreqd=0;;
	esac

	case "$hwmode" in
		n|11n)	nmode=1; nreqd=1;;
		*n*)	nmode=1; nreqd=0;;
	esac

        # Use 'nmode' for N-Phy only
	[ "$(wlc ifname "$device" phytype)" = 4 ] || nmode=

	local band chanspec
	[ ${channel:-0} -ge 1 -a ${channel:-0} -le 14 ] && band=2
	[ ${channel:-0} -ge 36 ] && {
		band=1
		gmode=
	}

	# Use 'chanspec' instead of 'channel' for 'N' modes (See bcmwifi.h)
	[ -n "$nmode" -a -n "$band" -a -n "$channel" ] && {
		case "$htmode" in
			HT40)
				if [ -n "$gmode" ]; then
					[ $channel -lt 7 ] && htmode="HT40+" || htmode="HT40-"
				else
					[ $(( ($channel / 4) % 2 )) -eq 1 ] && htmode="HT40+" || htmode="HT40-"
				fi
			;;
		esac
		case "$htmode" in
			HT40-)	chanspec=$(printf 0x%x%x%02x $band 0xe $(($channel - 2))); nmode=1; channel=;;
			HT40+)	chanspec=$(printf 0x%x%x%02x $band 0xd $(($channel + 2))); nmode=1; channel=;;
			HT20)	chanspec=$(printf 0x%x%x%02x $band 0xb $channel); nmode=1; channel=;;
			*) ;;
		esac
	}

	local leddc=$(wlc ifname "$device" leddc)
	[ $((leddc)) -eq $((0xffff)) ] && {
		leddc=0x005a000a;
	}

	local _c=0
	local nas="$(which nas)"
	local if_pre_up if_up nas_cmd
	local vif vif_pre_up vif_post_up vif_do_up vif_txpower
	local bssmax=$(wlc ifname "$device" bssmax)
	bssmax=${bssmax:-4}

	for vif in $vifs; do
		[ $_c -ge $bssmax ] && break

		config_get vif_txpower "$vif" txpower

		local mode
		config_get mode "$vif" mode
		append vif_pre_up "vif $_c" "$N"
		append vif_post_up "vif $_c" "$N"
		append vif_do_up "vif $_c" "$N"

		config_get_bool wmm "$vif" wmm "$wmm"
		config_get_bool doth "$vif" doth "$doth"

		[ "$mode" = "sta" ] || {
			local hidden isolate
			config_get_bool hidden "$vif" hidden 0
			append vif_pre_up "closed $hidden" "$N"
			config_get_bool isolate "$vif" isolate 0
			append vif_pre_up "ap_isolate $isolate" "$N"
		}

		local wsec_r=0
		local eap_r=0
		local wsec=0
		local auth=0
		local nasopts=
		local enc key rekey

		config_get enc "$vif" encryption
		case "$enc" in
			*wep*)
				local def defkey k knr
				wsec_r=1
				wsec=1
				defkey=1
				config_get key "$vif" key
				case "$enc" in
					*shared*) append vif_do_up "wepauth 1" "$N";;
					*) append vif_do_up "wepauth 0" "$N";;
				esac
				case "$key" in
					[1234])
						defkey="$key"
						for knr in 1 2 3 4; do
							config_get k "$vif" key$knr
							[ -n "$k" ] || continue
							[ "$defkey" = "$knr" ] && def="=" || def=""
							append vif_do_up "wepkey $def$knr,$k" "$N"
						done
					;;
					"");;
					*) append vif_do_up "wepkey =1,$key" "$N";;
				esac
			;;
			*psk*)
				wsec_r=1
				config_get key "$vif" key

				# psk version + default cipher
				case "$enc" in
					*mixed*|*psk+psk2*) auth=132; wsec=6;;
					*psk2*) auth=128; wsec=4;;
					*) auth=4; wsec=2;;
				esac

				# cipher override
				case "$enc" in
					*tkip+aes*|*tkip+ccmp*|*aes+tkip*|*ccmp+tkip*) wsec=6;;
					*aes*|*ccmp*) wsec=4;;
					*tkip*) wsec=2;;
				esac

				# group rekey interval
				config_get rekey "$vif" wpa_group_rekey

				eval "${vif}_key=\"\$key\""
				nasopts="-k \"\$${vif}_key\"${rekey:+ -g $rekey}"
			;;
			*wpa*)
				local auth_port auth_secret auth_server
				wsec_r=1
				eap_r=1
				config_get auth_server "$vif" auth_server
				[ -z "$auth_server" ] && config_get auth_server "$vif" server
				config_get auth_port "$vif" auth_port
				[ -z "$auth_port" ] && config_get auth_port "$vif" port
				config_get auth_secret "$vif" auth_secret
				[ -z "$auth_secret" ] && config_get auth_secret "$vif" key

				# wpa version + default cipher
				case "$enc" in
					*mixed*|*wpa+wpa2*) auth=66; wsec=6;;
					*wpa2*) auth=64; wsec=4;;
					*) auth=2; wsec=2;;
				esac

				# cipher override
				case "$enc" in
					*tkip+aes*|*tkip+ccmp*|*aes+tkip*|*ccmp+tkip*) wsec=6;;
					*aes*|*ccmp*) wsec=4;;
					*tkip*) wsec=2;;
				esac

				# group rekey interval
				config_get rekey "$vif" wpa_group_rekey

				eval "${vif}_key=\"\$auth_secret\""
				nasopts="-r \"\$${vif}_key\" -h $auth_server -p ${auth_port:-1812}${rekey:+ -g $rekey}"
			;;
		esac
		append vif_do_up "wsec $wsec" "$N"
		append vif_do_up "wpa_auth $auth" "$N"
		append vif_do_up "wsec_restrict $wsec_r" "$N"
		append vif_do_up "eap_restrict $eap_r" "$N"

		local ssid
		config_get ssid "$vif" ssid
		append vif_post_up "vlan_mode 0" "$N"
		append vif_pre_up "ssid $ssid" "$N"

		[ "$mode" = "monitor" ] && {
			append vif_post_up "monitor $monitor" "$N"
		}

		[ "$mode" = "adhoc" ] && {
			local bssid
			config_get bssid "$vif" bssid
			[ -n "$bssid" ] && {
				append vif_pre_up "bssid $bssid" "$N"
				append vif_pre_up "ibss_merge 0" "$N"
			} || {
				append vif_pre_up "ibss_merge 1" "$N"
			}
		}

		append vif_post_up "enabled 1" "$N"

		local ifname
		config_get ifname "$vif" ifname
		local if_cmd="if_pre_up"
		[ "$ifname" != "${ifname##${device}-}" ] && if_cmd="if_up"
		append $if_cmd "macaddr=\$(wlc ifname '$ifname' cur_etheraddr)" ";$N"
		append $if_cmd "ip link set dev '$ifname' address \$macaddr" ";$N"
		append if_up "ip link set dev '$ifname' up" ";$N"

		local net_cfg="$(find_net_config "$vif")"
		[ -z "$net_cfg" ] || {
			ubus -t 30 wait_for network.interface."$net_cfg"
			append if_up "set_wifi_up '$vif' '$ifname'" ";$N"
			append if_up "start_net '$ifname' '$net_cfg'" ";$N"
		}
		[ -z "$nas" -o -z "$nasopts" ] || {
			eval "${vif}_ssid=\"\$ssid\""
			local nas_mode="-A"
			[ "$mode" = "sta" ] && nas_mode="-S"
			[ -z "$nas_cmd" ] && {
				local pid_file=/var/run/nas.$device.pid
				nas_cmd="start-stop-daemon -S -b -p $pid_file -x $nas -- -P $pid_file -H 34954"
			}
			append nas_cmd "-i $ifname $nas_mode -m $auth -w $wsec -s \"\$${vif}_ssid\" -g 3600 -F $nasopts"
		}
		_c=$(($_c + 1))
	done
	wlc ifname "$device" stdin <<EOF
${macaddr:+bssid $macaddr}
${macaddr:+cur_etheraddr $macaddr}
band ${band:-0}
${nmode:+nmode $nmode}
${nmode:+${nreqd:+nreqd $nreqd}}
${gmode:+gmode $gmode}
leddc $leddc
apsta $apsta
ap $ap
${mssid:+mssid $mssid}
infra $infra
${wet:+wet 1}
802.11d 0
802.11h ${doth:-0}
wme ${wmm:-1}
rxant ${rxantenna:-3}
txant ${txantenna:-3}
fragthresh ${frag:-2346}
rtsthresh ${rts:-2347}
monitor ${monitor:-0}

radio ${radio:-1}
macfilter ${macfilter:-0}
maclist ${maclist:-none}
${wds:+wds $wds}
country ${country:-US}
${channel:+channel $channel}
${chanspec:+chanspec $chanspec}
maxassoc ${maxassoc:-128}
slottime ${slottime:--1}
${frameburst:+frameburst $frameburst}

$vif_pre_up
EOF
	eval "$if_pre_up"
	wlc ifname "$device" stdin <<EOF
up
$vif_post_up
EOF
	eval "$if_up"
	wlc ifname "$device" stdin <<EOF
$vif_do_up
EOF

	# use vif_txpower (from last wifi-iface) instead of txpower (from
	# wifi-device) if the latter does not exist
	txpower=${txpower:-$vif_txpower}
	[ -z "$txpower" ] || iwconfig $device txpower ${txpower}dBm

	eval "$nas_cmd"
}


detect_broadcom() {
	local i=-1

	while grep -qs "^ *wl$((++i)):" /proc/net/dev; do
		local channel type

		config_get type wl${i} type
		[ "$type" = broadcom ] && continue
		channel=`wlc ifname wl${i} channel`
		cat <<EOF
config wifi-device  wl${i}
	option type     broadcom
	option channel  ${channel:-11}
	option txantenna 3
	option rxantenna 3
	# REMOVE THIS LINE TO ENABLE WIFI:
	option disabled 1

config wifi-iface
	option device   wl${i}
	option network	lan
	option mode     ap
	option ssid     Lede${i#0}
	option encryption none

EOF
	done
}