package/kernel/mac80211/files/lib/netifd/wireless/mac80211.sh

   1 #!/bin/sh
   2 . /lib/netifd/netifd-wireless.sh
   3 . /lib/netifd/hostapd.sh
   4
   5 init_wireless_driver "$@"
   6
   7 MP_CONFIG_INT="mesh_retry_timeout mesh_confirm_timeout mesh_holding_timeout mesh_max_peer_links
   8                mesh_max_retries mesh_ttl mesh_element_ttl mesh_hwmp_max_preq_retries
   9                mesh_path_refresh_time mesh_min_discovery_timeout mesh_hwmp_active_path_timeout
  10                mesh_hwmp_preq_min_interval mesh_hwmp_net_diameter_traversal_time mesh_hwmp_rootmode
  11                mesh_hwmp_rann_interval mesh_gate_announcements mesh_sync_offset_max_neighor
  12                mesh_rssi_threshold mesh_hwmp_active_path_to_root_timeout mesh_hwmp_root_interval
  13                mesh_hwmp_confirmation_interval mesh_awake_window mesh_plink_timeout"
  14 MP_CONFIG_BOOL="mesh_auto_open_plinks mesh_fwding"
  15 MP_CONFIG_STRING="mesh_power_mode"
  16
  17 drv_mac80211_init_device_config() {
  18         hostapd_common_add_device_config
  19
  20         config_add_string path phy macaddr
  21         config_add_string hwmode
  22         config_add_int beacon_int chanbw frag rts
  23         config_add_int rxantenna txantenna antenna_gain txpower
  24         config_add_boolean noscan
  25         config_add_array ht_capab
  26 }
  27
  28 drv_mac80211_init_iface_config() {
  29         hostapd_common_add_bss_config
  30
  31         config_add_string macaddr ifname
  32
  33         config_add_boolean wds powersave
  34         config_add_int maxassoc
  35         config_add_int max_listen_int
  36         config_add_int dtim_interval
  37
  38         # mesh
  39         config_add_int $MP_CONFIG_INT
  40         config_add_boolean $MP_CONFIG_BOOL
  41         config_add_string $MP_CONFIG_STRING
  42 }
  43
  44 mac80211_hostapd_setup_base() {
  45         local phy="$1"
  46
  47         json_select config
  48
  49         [ "$auto_channel" -gt 0 ] && channel=acs_survey
  50
  51         [ "$enable_ht" -gt 0 ] && {
  52                 json_get_vars noscan htmode
  53                 json_get_values ht_capab_list ht_capab
  54
  55                 append base_cfg "ieee80211n=1" "$N"
  56
  57                 ht_capab=
  58                 [ -n "$htmode" ] && ht_capab="[$htmode]"
  59                 for cap in $ht_capab_list; do
  60                         ht_capab="$ht_capab[$cap]"
  61                 done
  62
  63                 [ -n "$ht_capab" ] && append base_cfg "ht_capab=$ht_capab" "$N"
  64         }
  65
  66         hostapd_prepare_device_config "$hostapd_conf_file" nl80211
  67         cat >> "$hostapd_conf_file" <<EOF
  68 ${channel:+channel=$channel}
  69 ${noscan:+noscan=$noscan}
  70 $base_cfg
  71
  72 EOF
  73         json_select ..
  74 }
  75
  76 mac80211_hostapd_setup_bss() {
  77         local phy="$1"
  78         local ifname="$2"
  79         local macaddr="$3"
  80         local type="$4"
  81
  82         hostapd_cfg=
  83         append hostapd_cfg "$type=$ifname" "$N"
  84
  85         hostapd_set_bss_options hostapd_cfg "$vif" || return 1
  86         json_get_vars wds dtim_period max_listen_int
  87
  88         [ "$wds" -gt 0 ] && append hostapd_cfg "wds_sta=1" "$N"
  89         [ "$staidx" -gt 0 ] && append hostapd_cfg "start_disabled=1" "$N"
  90
  91         cat >> /var/run/hostapd-$phy.conf <<EOF
  92 $hostapd_cfg
  93 bssid=$macaddr
  94 ${dtim_period:+dtim_period=$dtim_period}
  95 ${max_listen_int:+max_listen_interval=$max_listen_int}
  96 EOF
  97 }
  98
  99 mac80211_generate_mac() {
 100         local phy="$1"
 101         local id="${macidx:-0}"
 102
 103         local ref="$(cat /sys/class/ieee80211/${phy}/macaddress)"
 104         local mask="$(cat /sys/class/ieee80211/${phy}/address_mask)"
 105
 106         [ "$mask" = "00:00:00:00:00:00" ] && mask="ff:ff:ff:ff:ff:ff";
 107         local oIFS="$IFS"; IFS=":"; set -- $mask; IFS="$oIFS"
 108
 109         local mask1=$1
 110         local mask6=$6
 111
 112         local oIFS="$IFS"; IFS=":"; set -- $ref; IFS="$oIFS"
 113
 114         macidx=$(($id + 1))
 115         [ "$((0x$mask1))" -gt 0 ] && {
 116                 b1="0x$1"
 117                 [ "$id" -gt 0 ] && \
 118                         b1=$(($b1 ^ ((($id - 1) << 2) | 0x2)))
 119                 printf "%02x:%s:%s:%s:%s:%s" $b1 $2 $3 $4 $5 $6
 120                 return
 121         }
 122
 123         [ "$((0x$mask6))" -lt 255 ] && {
 124                 printf "%s:%s:%s:%s:%s:%02x" $1 $2 $3 $4 $5 $(( 0x$6 ^ $id ))
 125                 return
 126         }
 127
 128         off2=$(( (0x$6 + $id) / 0x100 ))
 129         printf "%s:%s:%s:%s:%02x:%02x" \
 130                 $1 $2 $3 $4 \
 131                 $(( (0x$5 + $off2) % 0x100 )) \
 132                 $(( (0x$6 + $id) % 0x100 ))
 133 }
 134
 135 find_phy() {
 136         [ -n "$phy" -a -d /sys/class/ieee80211/$phy ] && return 0
 137         [ -n "$path" -a -d "/sys/devices/$path/ieee80211" ] && {
 138                 phy="$(ls /sys/devices/$path/ieee80211 | grep -m 1 phy)"
 139                 [ -n "$phy" ] && return 0
 140         }
 141         [ -n "$macaddr" ] && {
 142                 for phy in $(ls /sys/class/ieee80211 2>/dev/null); do
 143                         grep -i -q "$macaddr" "/sys/class/ieee80211/${phy}/macaddress" && return 0
 144                 done
 145         }
 146         return 1
 147 }
 148
 149 mac80211_check_ap() {
 150         has_ap=1
 151 }
 152
 153 mac80211_prepare_vif() {
 154         json_select config
 155
 156         json_get_vars ifname mode ssid wds powersave macaddr
 157
 158         [ -n "$ifname" ] || ifname="wlan${phy#phy}${if_idx:+-$if_idx}"
 159         if_idx=$((${if_idx:-0} + 1))
 160
 161         set_default wds 0
 162         set_default powersave 0
 163
 164         json_select ..
 165
 166         [ -n "$macaddr" ] || {
 167                 macaddr="$(mac80211_generate_mac $phy)"
 168                 macidx="$(($macidx + 1))"
 169         }
 170
 171         json_add_object data
 172         json_add_string ifname "$ifname"
 173         json_close_object
 174         json_select config
 175
 176         # It is far easier to delete and create the desired interface
 177         case "$mode" in
 178                 adhoc)
 179                         iw phy "$phy" interface add "$ifname" type adhoc
 180                 ;;
 181                 ap)
 182                         # Hostapd will handle recreating the interface and
 183                         # subsequent virtual APs belonging to the same PHY
 184                         if [ -n "$hostapd_ctrl" ]; then
 185                                 type=bss
 186                         else
 187                                 type=interface
 188                         fi
 189
 190                         mac80211_hostapd_setup_bss "$phy" "$ifname" "$macaddr" "$type" || return
 191
 192                         [ -n "$hostapd_ctrl" ] || {
 193                                 iw phy "$phy" interface add "$ifname" type managed
 194                                 hostapd_ctrl="${hostapd_ctrl:-/var/run/hostapd/$ifname}"
 195                         }
 196                 ;;
 197                 mesh)
 198                         json_get_vars key mesh_id
 199                         if [ -n "$key" ]; then
 200                                 iw phy "$phy" interface add "$ifname" type mp
 201                         else
 202                                 iw phy "$phy" interface add "$ifname" type mp mesh_id "$mesh_id"
 203                         fi
 204                 ;;
 205                 monitor)
 206                         iw phy "$phy" interface add "$ifname" type monitor
 207                 ;;
 208                 sta)
 209                         local wdsflag=
 210                         staidx="$(($staidx + 1))"
 211                         [ "$wds" -gt 0 ] && wdsflag="4addr on"
 212                         iw phy "$phy" interface add "$ifname" type managed $wdsflag
 213                         [ "$powersave" -gt 0 ] && powersave="on" || powersave="off"
 214                         iw "$ifname" set power_save "$powersave"
 215                 ;;
 216         esac
 217
 218         case "$mode" in
 219                 monitor|mesh)
 220                         [ "$auto_channel" -gt 0 ] || iw dev "$ifname" set channel "$channel" $htmode
 221                 ;;
 222         esac
 223
 224         if [ "$mode" != "ap" ]; then
 225                 # ALL ap functionality will be passed to hostapd
 226                 # All interfaces must have unique mac addresses
 227                 # which can either be explicitly set in the device
 228                 # section, or automatically generated
 229                 ifconfig "$ifname" hw ether "$macaddr"
 230         fi
 231
 232         json_select ..
 233 }
 234
 235 mac80211_setup_supplicant() {
 236         wpa_supplicant_prepare_interface "$ifname" nl80211 || return 1
 237         wpa_supplicant_add_network "$ifname"
 238         wpa_supplicant_run "$ifname" ${hostapd_ctrl:+-H $hostapd_ctrl}
 239 }
 240
 241 mac80211_setup_adhoc() {
 242         json_get_vars bssid ssid basic_rate key
 243
 244         keyspec=
 245         [ "$auth_type" == "wep" ] && {
 246                 set_default key 1
 247                 case "$key" in
 248                         [1234])
 249                                 local idx
 250                                 for idx in 1 2 3 4; do
 251                                         json_get_var ikey "key$idx"
 252
 253                                         [ -n "$ikey" ] && {
 254                                                 ikey="$(($idx - 1)):$(prepare_key_wep "$ikey")"
 255                                                 [ $idx -eq $key ] && ikey="d:$ikey"
 256                                                 append keyspec "$ikey"
 257                                         }
 258                                 done
 259                         ;;
 260                         *)
 261                                 append keyspec "d:0:$(prepare_key_wep "$key")"
 262                         ;;
 263                 esac
 264         }
 265
 266         brstr=
 267         for br in $basic_rate; do
 268                 hostapd_add_rate brstr "$br"
 269         done
 270
 271         mcval=
 272         [ -n "$mcast_rate" ] && hostapd_add_rate mcval "$mcast_rate"
 273
 274         iw dev "$ifname" ibss join "$ssid" $freq $htmode fixed-freq $bssid \
 275                 ${beacon_int:+beacon-interval $beacon_int} \
 276                 ${brstr:+basic-rates $brstr} \
 277                 ${mcval:+mcast-rate $mcval} \
 278                 ${keyspec:+keys $keyspec}
 279 }
 280
 281 mac80211_setup_vif() {
 282         local name="$1"
 283
 284         json_select data
 285         json_get_vars ifname
 286         json_select ..
 287
 288         json_select config
 289         json_get_vars mode
 290         json_get_var vif_txpower txpower
 291
 292         ifconfig "$ifname" up || {
 293                 wireless_setup_vif_failed IFUP_ERROR
 294                 json_select ..
 295                 return
 296         }
 297
 298         set_default vif_txpower "$txpower"
 299         [ -z "$vif_txpower" ] || iw dev "$ifname" set txpower fixed "${vif_txpower%%.*}00"
 300
 301         case "$mode" in
 302                 mesh)
 303                         for var in $MP_CONFIG_INT $MP_CONFIG_BOOL $MP_CONFIG_STRING; do
 304                                 json_get_var mp_val "$var"
 305                                 [ -n "$mp_val" ] && iw dev "$ifname" set mesh_param "$var" "$mp_val"
 306                         done
 307                         # todo: authsae
 308                 ;;
 309                 adhoc)
 310                         wireless_vif_parse_encryption
 311                         if [ "$wpa" -gt 0 -o "$auto_channel" -gt 0 ]; then
 312                                 mac80211_setup_supplicant || failed=1
 313                         else
 314                                 mac80211_setup_adhoc
 315                         fi
 316                 ;;
 317                 sta)
 318                         mac80211_setup_supplicant || failed=1
 319                 ;;
 320         esac
 321
 322         json_select ..
 323         [ -n "$failed" ] || wireless_add_vif "$name" "$ifname"
 324 }
 325
 326 get_freq() {
 327         local phy="$1"
 328         local chan="$2"
 329         iw "$phy" info | grep -E -m1 "(\* ${chan:-....} MHz${chan:+|\\[$chan\\]})" | grep MHz | awk '{print $2}'
 330 }
 331
 332 mac80211_interface_cleanup() {
 333         local phy="$1"
 334
 335         for wdev in $(list_phy_interfaces "$phy"); do
 336                 ifconfig "$wdev" down 2>/dev/null
 337                 iw dev "$wdev" del
 338         done
 339 }
 340
 341 drv_mac80211_cleanup() {
 342         hostapd_common_cleanup
 343 }
 344
 345 drv_mac80211_setup() {
 346         json_select config
 347         json_get_vars \
 348                 phy macaddr path \
 349                 country chanbw distance \
 350                 txpower antenna_gain \
 351                 rxantenna txantenna \
 352                 frag rts beacon_int
 353         json_select ..
 354
 355         find_phy || {
 356                 echo "Could not find PHY for device '$1'"
 357                 wireless_set_retry 0
 358                 return 1
 359         }
 360
 361         wireless_set_data phy="$phy"
 362         mac80211_interface_cleanup "$phy"
 363
 364         # convert channel to frequency
 365         [ "$auto_channel" -gt 0 ] || freq="$(get_freq "$phy" "$channel")"
 366
 367         [ -n "$country" ] && {
 368                 iw reg get | grep -q "^country $country:" || {
 369                         iw reg set "$country"
 370                         sleep 1
 371                 }
 372         }
 373
 374         hostapd_conf_file="/var/run/hostapd-$phy.conf"
 375
 376         no_ap=1
 377         macidx=0
 378         staidx=0
 379
 380         [ -n "$chanbw" ] && {
 381                 for file in /sys/kernel/debug/ieee80211/$phy/ath9k/chanbw /sys/kernel/debug/ieee80211/$phy/ath5k/bwmode; do
 382                         [ -f "$file" ] && echo "$chanbw" > "$file"
 383                 done
 384         }
 385
 386         set_default rxantenna all
 387         set_default txantenna all
 388         set_default distance 0
 389         set_default antenna_gain 0
 390
 391         iw phy "$phy" set antenna $txantenna $rxantenna >/dev/null 2>&1
 392         iw phy "$phy" set antenna_gain $antenna_gain
 393         iw phy "$phy" set distance "$distance"
 394
 395         [ -n "$frag" ] && iw phy "$phy" set frag "${frag%%.*}"
 396         [ -n "$rts" ] && iw phy "$phy" set rts "${rts%%.*}"
 397
 398         has_ap=
 399         hostapd_ctrl=
 400         for_each_interface "ap" mac80211_check_ap
 401
 402         rm -f "$hostapd_conf_file"
 403         [ -n "$has_ap" ] && mac80211_hostapd_setup_base "$phy"
 404
 405         for_each_interface "sta adhoc mesh monitor" mac80211_prepare_vif
 406         for_each_interface "ap" mac80211_prepare_vif
 407
 408         [ -n "$hostapd_ctrl" ] && {
 409                 /usr/sbin/hostapd -P /var/run/wifi-$phy.pid -B "$hostapd_conf_file"
 410                 ret="$?"
 411                 wireless_add_process "$(cat /var/run/wifi-$phy.pid)" "/usr/sbin/hostapd" 1
 412                 [ "$ret" != 0 ] && {
 413                         wireless_setup_failed HOSTAPD_START_FAILED
 414                         return
 415                 }
 416         }
 417
 418         for_each_interface "ap sta adhoc mesh monitor" mac80211_setup_vif
 419
 420         wireless_set_up
 421 }
 422
 423 list_phy_interfaces() {
 424         local phy="$1"
 425         if [ -d "/sys/class/ieee80211/${phy}/device/net" ]; then
 426                 ls "/sys/class/ieee80211/${phy}/device/net" 2>/dev/null;
 427         else
 428                 ls "/sys/class/ieee80211/${phy}/device" 2>/dev/null | grep net: | sed -e 's,net:,,g'
 429         fi
 430 }
 431
 432 drv_mac80211_teardown() {
 433         wireless_process_kill_all
 434
 435         json_select data
 436         json_get_vars phy
 437         json_select ..
 438
 439         mac80211_interface_cleanup "$phy"
 440 }
 441
 442 add_driver mac80211