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

   1 #!/bin/sh
   2 . /lib/netifd/netifd-wireless.sh
   3 . /lib/netifd/hostapd.sh
   4 . /lib/netifd/mac80211.sh
   5
   6 init_wireless_driver "$@"
   7
   8 MP_CONFIG_INT="mesh_retry_timeout mesh_confirm_timeout mesh_holding_timeout mesh_max_peer_links
   9                mesh_max_retries mesh_ttl mesh_element_ttl mesh_hwmp_max_preq_retries
  10                mesh_path_refresh_time mesh_min_discovery_timeout mesh_hwmp_active_path_timeout
  11                mesh_hwmp_preq_min_interval mesh_hwmp_net_diameter_traversal_time mesh_hwmp_rootmode
  12                mesh_hwmp_rann_interval mesh_gate_announcements mesh_sync_offset_max_neighor
  13                mesh_rssi_threshold mesh_hwmp_active_path_to_root_timeout mesh_hwmp_root_interval
  14                mesh_hwmp_confirmation_interval mesh_awake_window mesh_plink_timeout"
  15 MP_CONFIG_BOOL="mesh_auto_open_plinks mesh_fwding"
  16 MP_CONFIG_STRING="mesh_power_mode"
  17
  18 NEWAPLIST=
  19 OLDAPLIST=
  20 NEWSPLIST=
  21 OLDSPLIST=
  22 NEWUMLIST=
  23 OLDUMLIST=
  24
  25 drv_mac80211_init_device_config() {
  26         hostapd_common_add_device_config
  27
  28         config_add_string path phy 'macaddr:macaddr'
  29         config_add_string hwmode
  30         config_add_string tx_burst
  31         config_add_int beacon_int chanbw frag rts
  32         config_add_int rxantenna txantenna antenna_gain txpower distance
  33         config_add_boolean noscan ht_coex acs_exclude_dfs
  34         config_add_array ht_capab
  35         config_add_array channels
  36         config_add_boolean \
  37                 rxldpc \
  38                 short_gi_80 \
  39                 short_gi_160 \
  40                 tx_stbc_2by1 \
  41                 su_beamformer \
  42                 su_beamformee \
  43                 mu_beamformer \
  44                 mu_beamformee \
  45                 vht_txop_ps \
  46                 htc_vht \
  47                 rx_antenna_pattern \
  48                 tx_antenna_pattern
  49         config_add_int vht_max_a_mpdu_len_exp vht_max_mpdu vht_link_adapt vht160 rx_stbc tx_stbc
  50         config_add_boolean \
  51                 ldpc \
  52                 greenfield \
  53                 short_gi_20 \
  54                 short_gi_40 \
  55                 max_amsdu \
  56                 dsss_cck_40
  57 }
  58
  59 drv_mac80211_init_iface_config() {
  60         hostapd_common_add_bss_config
  61
  62         config_add_string 'macaddr:macaddr' ifname
  63
  64         config_add_boolean wds powersave enable
  65         config_add_string wds_bridge
  66         config_add_int maxassoc
  67         config_add_int max_listen_int
  68         config_add_int dtim_period
  69         config_add_int start_disabled
  70
  71         # mesh
  72         config_add_string mesh_id
  73         config_add_int $MP_CONFIG_INT
  74         config_add_boolean $MP_CONFIG_BOOL
  75         config_add_string $MP_CONFIG_STRING
  76 }
  77
  78 mac80211_add_capabilities() {
  79         local __var="$1"; shift
  80         local __mask="$1"; shift
  81         local __out= oifs
  82
  83         oifs="$IFS"
  84         IFS=:
  85         for capab in "$@"; do
  86                 set -- $capab
  87
  88                 [ "$(($4))" -gt 0 ] || continue
  89                 [ "$(($__mask & $2))" -eq "$((${3:-$2}))" ] || continue
  90                 __out="$__out[$1]"
  91         done
  92         IFS="$oifs"
  93
  94         export -n -- "$__var=$__out"
  95 }
  96
  97 mac80211_hostapd_setup_base() {
  98         local phy="$1"
  99
 100         json_select config
 101
 102         [ "$auto_channel" -gt 0 ] && channel=acs_survey
 103         [ "$auto_channel" -gt 0 ] && json_get_values channel_list channels
 104
 105         [ "$auto_channel" -gt 0 ] && json_get_vars acs_exclude_dfs
 106         [ -n "$acs_exclude_dfs" ] && [ "$acs_exclude_dfs" -gt 0 ] &&
 107                 append base_cfg "acs_exclude_dfs=1" "$N"
 108
 109         json_get_vars noscan ht_coex
 110         json_get_values ht_capab_list ht_capab tx_burst
 111
 112         set_default noscan 0
 113
 114         [ "$noscan" -gt 0 ] && hostapd_noscan=1
 115         [ "$tx_burst" = 0 ] && tx_burst=
 116
 117         ieee80211n=1
 118         ht_capab=
 119         case "$htmode" in
 120                 VHT20|HT20) ;;
 121                 HT40*|VHT40|VHT80|VHT160)
 122                         case "$hwmode" in
 123                                 a)
 124                                         case "$(( ($channel / 4) % 2 ))" in
 125                                                 1) ht_capab="[HT40+]";;
 126                                                 0) ht_capab="[HT40-]";;
 127                                         esac
 128                                 ;;
 129                                 *)
 130                                         case "$htmode" in
 131                                                 HT40+) ht_capab="[HT40+]";;
 132                                                 HT40-) ht_capab="[HT40-]";;
 133                                                 *)
 134                                                         if [ "$channel" -lt 7 ]; then
 135                                                                 ht_capab="[HT40+]"
 136                                                         else
 137                                                                 ht_capab="[HT40-]"
 138                                                         fi
 139                                                 ;;
 140                                         esac
 141                                 ;;
 142                         esac
 143                         [ "$auto_channel" -gt 0 ] && ht_capab="[HT40+]"
 144                 ;;
 145                 *) ieee80211n= ;;
 146         esac
 147
 148         [ -n "$ieee80211n" ] && {
 149                 append base_cfg "ieee80211n=1" "$N"
 150
 151                 set_default ht_coex 0
 152                 append base_cfg "ht_coex=$ht_coex" "$N"
 153
 154                 json_get_vars \
 155                         ldpc:1 \
 156                         greenfield:0 \
 157                         short_gi_20:1 \
 158                         short_gi_40:1 \
 159                         tx_stbc:1 \
 160                         rx_stbc:3 \
 161                         max_amsdu:1 \
 162                         dsss_cck_40:1
 163
 164                 ht_cap_mask=0
 165                 for cap in $(iw phy "$phy" info | grep 'Capabilities:' | cut -d: -f2); do
 166                         ht_cap_mask="$(($ht_cap_mask | $cap))"
 167                 done
 168
 169                 cap_rx_stbc=$((($ht_cap_mask >> 8) & 3))
 170                 [ "$rx_stbc" -lt "$cap_rx_stbc" ] && cap_rx_stbc="$rx_stbc"
 171                 ht_cap_mask="$(( ($ht_cap_mask & ~(0x300)) | ($cap_rx_stbc << 8) ))"
 172
 173                 mac80211_add_capabilities ht_capab_flags $ht_cap_mask \
 174                         LDPC:0x1::$ldpc \
 175                         GF:0x10::$greenfield \
 176                         SHORT-GI-20:0x20::$short_gi_20 \
 177                         SHORT-GI-40:0x40::$short_gi_40 \
 178                         TX-STBC:0x80::$tx_stbc \
 179                         RX-STBC1:0x300:0x100:1 \
 180                         RX-STBC12:0x300:0x200:1 \
 181                         RX-STBC123:0x300:0x300:1 \
 182                         MAX-AMSDU-7935:0x800::$max_amsdu \
 183                         DSSS_CCK-40:0x1000::$dsss_cck_40
 184
 185                 ht_capab="$ht_capab$ht_capab_flags"
 186                 [ -n "$ht_capab" ] && append base_cfg "ht_capab=$ht_capab" "$N"
 187         }
 188
 189         # 802.11ac
 190         enable_ac=0
 191         idx="$channel"
 192         case "$htmode" in
 193                 VHT20) enable_ac=1;;
 194                 VHT40)
 195                         case "$(( ($channel / 4) % 2 ))" in
 196                                 1) idx=$(($channel + 2));;
 197                                 0) idx=$(($channel - 2));;
 198                         esac
 199                         enable_ac=1
 200                         append base_cfg "vht_oper_chwidth=0" "$N"
 201                         append base_cfg "vht_oper_centr_freq_seg0_idx=$idx" "$N"
 202                 ;;
 203                 VHT80)
 204                         case "$(( ($channel / 4) % 4 ))" in
 205                                 1) idx=$(($channel + 6));;
 206                                 2) idx=$(($channel + 2));;
 207                                 3) idx=$(($channel - 2));;
 208                                 0) idx=$(($channel - 6));;
 209                         esac
 210                         enable_ac=1
 211                         append base_cfg "vht_oper_chwidth=1" "$N"
 212                         append base_cfg "vht_oper_centr_freq_seg0_idx=$idx" "$N"
 213                 ;;
 214                 VHT160)
 215                         case "$channel" in
 216                                 36|40|44|48|52|56|60|64) idx=50;;
 217                                 100|104|108|112|116|120|124|128) idx=114;;
 218                         esac
 219                         enable_ac=1
 220                         append base_cfg "vht_oper_chwidth=2" "$N"
 221                         append base_cfg "vht_oper_centr_freq_seg0_idx=$idx" "$N"
 222                 ;;
 223         esac
 224
 225         if [ "$enable_ac" != "0" ]; then
 226                 json_get_vars \
 227                         rxldpc:1 \
 228                         short_gi_80:1 \
 229                         short_gi_160:1 \
 230                         tx_stbc_2by1:1 \
 231                         su_beamformer:1 \
 232                         su_beamformee:1 \
 233                         mu_beamformer:1 \
 234                         mu_beamformee:1 \
 235                         vht_txop_ps:1 \
 236                         htc_vht:1 \
 237                         rx_antenna_pattern:1 \
 238                         tx_antenna_pattern:1 \
 239                         vht_max_a_mpdu_len_exp:7 \
 240                         vht_max_mpdu:11454 \
 241                         rx_stbc:4 \
 242                         vht_link_adapt:3 \
 243                         vht160:2
 244
 245                 set_default tx_burst 2.0
 246                 append base_cfg "ieee80211ac=1" "$N"
 247                 vht_cap=0
 248                 for cap in $(iw phy "$phy" info | awk -F "[()]" '/VHT Capabilities/ { print $2 }'); do
 249                         vht_cap="$(($vht_cap | $cap))"
 250                 done
 251
 252                 cap_rx_stbc=$((($vht_cap >> 8) & 7))
 253                 [ "$rx_stbc" -lt "$cap_rx_stbc" ] && cap_rx_stbc="$rx_stbc"
 254                 vht_cap="$(( ($vht_cap & ~(0x700)) | ($cap_rx_stbc << 8) ))"
 255
 256                 mac80211_add_capabilities vht_capab $vht_cap \
 257                         RXLDPC:0x10::$rxldpc \
 258                         SHORT-GI-80:0x20::$short_gi_80 \
 259                         SHORT-GI-160:0x40::$short_gi_160 \
 260                         TX-STBC-2BY1:0x80::$tx_stbc_2by1 \
 261                         SU-BEAMFORMER:0x800::$su_beamformer \
 262                         SU-BEAMFORMEE:0x1000::$su_beamformee \
 263                         MU-BEAMFORMER:0x80000::$mu_beamformer \
 264                         MU-BEAMFORMEE:0x100000::$mu_beamformee \
 265                         VHT-TXOP-PS:0x200000::$vht_txop_ps \
 266                         HTC-VHT:0x400000::$htc_vht \
 267                         RX-ANTENNA-PATTERN:0x10000000::$rx_antenna_pattern \
 268                         TX-ANTENNA-PATTERN:0x20000000::$tx_antenna_pattern \
 269                         RX-STBC-1:0x700:0x100:1 \
 270                         RX-STBC-12:0x700:0x200:1 \
 271                         RX-STBC-123:0x700:0x300:1 \
 272                         RX-STBC-1234:0x700:0x400:1 \
 273
 274                 # supported Channel widths
 275                 vht160_hw=0
 276                 [ "$(($vht_cap & 12))" -eq 4 -a 1 -le "$vht160" ] && \
 277                         vht160_hw=1
 278                 [ "$(($vht_cap & 12))" -eq 8 -a 2 -le "$vht160" ] && \
 279                         vht160_hw=2
 280                 [ "$vht160_hw" = 1 ] && vht_capab="$vht_capab[VHT160]"
 281                 [ "$vht160_hw" = 2 ] && vht_capab="$vht_capab[VHT160-80PLUS80]"
 282
 283                 # maximum MPDU length
 284                 vht_max_mpdu_hw=3895
 285                 [ "$(($vht_cap & 3))" -ge 1 -a 7991 -le "$vht_max_mpdu" ] && \
 286                         vht_max_mpdu_hw=7991
 287                 [ "$(($vht_cap & 3))" -ge 2 -a 11454 -le "$vht_max_mpdu" ] && \
 288                         vht_max_mpdu_hw=11454
 289                 [ "$vht_max_mpdu_hw" != 3895 ] && \
 290                         vht_capab="$vht_capab[MAX-MPDU-$vht_max_mpdu_hw]"
 291
 292                 # maximum A-MPDU length exponent
 293                 vht_max_a_mpdu_len_exp_hw=0
 294                 [ "$(($vht_cap & 58720256))" -ge 8388608 -a 1 -le "$vht_max_a_mpdu_len_exp" ] && \
 295                         vht_max_a_mpdu_len_exp_hw=1
 296                 [ "$(($vht_cap & 58720256))" -ge 16777216 -a 2 -le "$vht_max_a_mpdu_len_exp" ] && \
 297                         vht_max_a_mpdu_len_exp_hw=2
 298                 [ "$(($vht_cap & 58720256))" -ge 25165824 -a 3 -le "$vht_max_a_mpdu_len_exp" ] && \
 299                         vht_max_a_mpdu_len_exp_hw=3
 300                 [ "$(($vht_cap & 58720256))" -ge 33554432 -a 4 -le "$vht_max_a_mpdu_len_exp" ] && \
 301                         vht_max_a_mpdu_len_exp_hw=4
 302                 [ "$(($vht_cap & 58720256))" -ge 41943040 -a 5 -le "$vht_max_a_mpdu_len_exp" ] && \
 303                         vht_max_a_mpdu_len_exp_hw=5
 304                 [ "$(($vht_cap & 58720256))" -ge 50331648 -a 6 -le "$vht_max_a_mpdu_len_exp" ] && \
 305                         vht_max_a_mpdu_len_exp_hw=6
 306                 [ "$(($vht_cap & 58720256))" -ge 58720256 -a 7 -le "$vht_max_a_mpdu_len_exp" ] && \
 307                         vht_max_a_mpdu_len_exp_hw=7
 308                 vht_capab="$vht_capab[MAX-A-MPDU-LEN-EXP$vht_max_a_mpdu_len_exp_hw]"
 309
 310                 # whether or not the STA supports link adaptation using VHT variant
 311                 vht_link_adapt_hw=0
 312                 [ "$(($vht_cap & 201326592))" -ge 134217728 -a 2 -le "$vht_link_adapt" ] && \
 313                         vht_link_adapt_hw=2
 314                 [ "$(($vht_cap & 201326592))" -ge 201326592 -a 3 -le "$vht_link_adapt" ] && \
 315                         vht_link_adapt_hw=3
 316                 [ "$vht_link_adapt_hw" != 0 ] && \
 317                         vht_capab="$vht_capab[VHT-LINK-ADAPT-$vht_link_adapt_hw]"
 318
 319                 [ -n "$vht_capab" ] && append base_cfg "vht_capab=$vht_capab" "$N"
 320         fi
 321
 322         hostapd_prepare_device_config "$hostapd_conf_file" nl80211
 323         cat >> "$hostapd_conf_file" <<EOF
 324 ${channel:+channel=$channel}
 325 ${channel_list:+chanlist=$channel_list}
 326 ${hostapd_noscan:+noscan=1}
 327 ${tx_burst:+tx_queue_data2_burst=$tx_burst}
 328 $base_cfg
 329
 330 EOF
 331         json_select ..
 332 }
 333
 334 mac80211_hostapd_setup_bss() {
 335         local phy="$1"
 336         local ifname="$2"
 337         local macaddr="$3"
 338         local type="$4"
 339
 340         hostapd_cfg=
 341         append hostapd_cfg "$type=$ifname" "$N"
 342
 343         hostapd_set_bss_options hostapd_cfg "$vif" || return 1
 344         json_get_vars wds wds_bridge dtim_period max_listen_int start_disabled
 345
 346         set_default wds 0
 347         set_default start_disabled 0
 348
 349         [ "$wds" -gt 0 ] && {
 350                 append hostapd_cfg "wds_sta=1" "$N"
 351                 [ -n "$wds_bridge" ] && append hostapd_cfg "wds_bridge=$wds_bridge" "$N"
 352         }
 353         [ "$staidx" -gt 0 -o "$start_disabled" -eq 1 ] && append hostapd_cfg "start_disabled=1" "$N"
 354
 355         cat >> /var/run/hostapd-$phy.conf <<EOF
 356 $hostapd_cfg
 357 bssid=$macaddr
 358 ${dtim_period:+dtim_period=$dtim_period}
 359 ${max_listen_int:+max_listen_interval=$max_listen_int}
 360 EOF
 361 }
 362
 363 mac80211_get_addr() {
 364         local phy="$1"
 365         local idx="$(($2 + 1))"
 366
 367         head -n $(($macidx + 1)) /sys/class/ieee80211/${phy}/addresses | tail -n1
 368 }
 369
 370 mac80211_generate_mac() {
 371         local phy="$1"
 372         local id="${macidx:-0}"
 373
 374         local ref="$(cat /sys/class/ieee80211/${phy}/macaddress)"
 375         local mask="$(cat /sys/class/ieee80211/${phy}/address_mask)"
 376
 377         [ "$mask" = "00:00:00:00:00:00" ] && {
 378                 mask="ff:ff:ff:ff:ff:ff";
 379
 380                 [ "$(wc -l < /sys/class/ieee80211/${phy}/addresses)" -gt 1 ] && {
 381                         addr="$(mac80211_get_addr "$phy" "$id")"
 382                         [ -n "$addr" ] && {
 383                                 echo "$addr"
 384                                 return
 385                         }
 386                 }
 387         }
 388
 389         local oIFS="$IFS"; IFS=":"; set -- $mask; IFS="$oIFS"
 390
 391         local mask1=$1
 392         local mask6=$6
 393
 394         local oIFS="$IFS"; IFS=":"; set -- $ref; IFS="$oIFS"
 395
 396         macidx=$(($id + 1))
 397         [ "$((0x$mask1))" -gt 0 ] && {
 398                 b1="0x$1"
 399                 [ "$id" -gt 0 ] && \
 400                         b1=$(($b1 ^ ((($id - !($b1 & 2)) << 2) | 0x2)))
 401                 printf "%02x:%s:%s:%s:%s:%s" $b1 $2 $3 $4 $5 $6
 402                 return
 403         }
 404
 405         [ "$((0x$mask6))" -lt 255 ] && {
 406                 printf "%s:%s:%s:%s:%s:%02x" $1 $2 $3 $4 $5 $(( 0x$6 ^ $id ))
 407                 return
 408         }
 409
 410         off2=$(( (0x$6 + $id) / 0x100 ))
 411         printf "%s:%s:%s:%s:%02x:%02x" \
 412                 $1 $2 $3 $4 \
 413                 $(( (0x$5 + $off2) % 0x100 )) \
 414                 $(( (0x$6 + $id) % 0x100 ))
 415 }
 416
 417 find_phy() {
 418         [ -n "$phy" -a -d /sys/class/ieee80211/$phy ] && return 0
 419         [ -n "$path" ] && {
 420                 phy="$(mac80211_path_to_phy "$path")"
 421                 [ -n "$phy" ] && return 0
 422         }
 423         [ -n "$macaddr" ] && {
 424                 for phy in $(ls /sys/class/ieee80211 2>/dev/null); do
 425                         grep -i -q "$macaddr" "/sys/class/ieee80211/${phy}/macaddress" && return 0
 426                 done
 427         }
 428         return 1
 429 }
 430
 431 mac80211_check_ap() {
 432         has_ap=1
 433 }
 434
 435 mac80211_iw_interface_add() {
 436         local phy="$1"
 437         local ifname="$2"
 438         local type="$3"
 439         local wdsflag="$4"
 440         local rc
 441
 442         iw phy "$phy" interface add "$ifname" type "$type" $wdsflag
 443         rc="$?"
 444
 445         [ "$rc" = 233 ] && {
 446                 # Device might have just been deleted, give the kernel some time to finish cleaning it up
 447                 sleep 1
 448
 449                 iw phy "$phy" interface add "$ifname" type "$type" $wdsflag
 450                 rc="$?"
 451         }
 452
 453         [ "$rc" = 233 ] && {
 454                 # Keep matching pre-existing interface
 455                 [ -d "/sys/class/ieee80211/${phy}/device/net/${ifname}" ] && \
 456                 case "$(iw dev wlan0 info | grep "^\ttype" | cut -d' ' -f2- 2>/dev/null)" in
 457                         "AP")
 458                                 [ "$type" = "__ap" ] && rc=0
 459                                 ;;
 460                         "IBSS")
 461                                 [ "$type" = "adhoc" ] && rc=0
 462                                 ;;
 463                         "managed")
 464                                 [ "$type" = "managed" ] && rc=0
 465                                 ;;
 466                         "mesh point")
 467                                 [ "$type" = "mp" ] && rc=0
 468                                 ;;
 469                         "monitor")
 470                                 [ "$type" = "monitor" ] && rc=0
 471                                 ;;
 472                 esac
 473         }
 474
 475         [ "$rc" = 233 ] && {
 476                 iw dev "$ifname" del
 477                 sleep 1
 478
 479                 iw phy "$phy" interface add "$ifname" type "$type" $wdsflag
 480                 rc="$?"
 481         }
 482
 483         [ "$rc" = 233 ] && {
 484                 # Device might not support virtual interfaces, so the interface never got deleted in the first place.
 485                 # Check if the interface already exists, and avoid failing in this case.
 486                 ip link show dev "$ifname" >/dev/null 2>/dev/null && rc=0
 487         }
 488
 489         [ "$rc" != 0 ] && wireless_setup_failed INTERFACE_CREATION_FAILED
 490         return $rc
 491 }
 492
 493 mac80211_prepare_vif() {
 494         json_select config
 495
 496         json_get_vars ifname mode ssid wds powersave macaddr enable
 497
 498         [ -n "$ifname" ] || ifname="wlan${phy#phy}${if_idx:+-$if_idx}"
 499         if_idx=$((${if_idx:-0} + 1))
 500
 501         set_default wds 0
 502         set_default powersave 0
 503
 504         json_select ..
 505
 506         [ -n "$macaddr" ] || {
 507                 macaddr="$(mac80211_generate_mac $phy)"
 508                 macidx="$(($macidx + 1))"
 509         }
 510
 511         json_add_object data
 512         json_add_string ifname "$ifname"
 513         json_close_object
 514         json_select config
 515
 516         # It is far easier to delete and create the desired interface
 517         case "$mode" in
 518                 adhoc)
 519                         mac80211_iw_interface_add "$phy" "$ifname" adhoc || return
 520                 ;;
 521                 ap)
 522                         # Hostapd will handle recreating the interface and
 523                         # subsequent virtual APs belonging to the same PHY
 524                         if [ -n "$hostapd_ctrl" ]; then
 525                                 type=bss
 526                         else
 527                                 type=interface
 528                         fi
 529
 530                         mac80211_hostapd_setup_bss "$phy" "$ifname" "$macaddr" "$type" || return
 531
 532                         NEWAPLIST="${NEWAPLIST}$ifname "
 533                         [ -n "$hostapd_ctrl" ] || {
 534                                 hostapd_ctrl="${hostapd_ctrl:-/var/run/hostapd/$ifname}"
 535                         }
 536                 ;;
 537                 mesh)
 538                         mac80211_iw_interface_add "$phy" "$ifname" mp || return
 539                 ;;
 540                 monitor)
 541                         mac80211_iw_interface_add "$phy" "$ifname" monitor || return
 542                 ;;
 543                 sta)
 544                         local wdsflag=
 545                         [ "$enable" = 0 ] || staidx="$(($staidx + 1))"
 546                         [ "$wds" -gt 0 ] && wdsflag="4addr on"
 547                         mac80211_iw_interface_add "$phy" "$ifname" managed "$wdsflag" || return
 548                         if [ "$wds" -gt 0 ]; then
 549                                 iw "$ifname" set 4addr on
 550                         else
 551                                 iw "$ifname" set 4addr off
 552                         fi
 553                         [ "$powersave" -gt 0 ] && powersave="on" || powersave="off"
 554                         iw "$ifname" set power_save "$powersave"
 555                 ;;
 556         esac
 557
 558         case "$mode" in
 559                 monitor|mesh)
 560                         [ "$auto_channel" -gt 0 ] || iw dev "$ifname" set channel "$channel" $iw_htmode
 561                 ;;
 562         esac
 563
 564         if [ "$mode" != "ap" ]; then
 565                 # ALL ap functionality will be passed to hostapd
 566                 # All interfaces must have unique mac addresses
 567                 # which can either be explicitly set in the device
 568                 # section, or automatically generated
 569                 ip link set dev "$ifname" address "$macaddr"
 570         fi
 571
 572         json_select ..
 573 }
 574
 575 mac80211_setup_supplicant() {
 576         local enable=$1
 577         local add_sp=0
 578         local spobj="$(ubus -S list | grep wpa_supplicant.${ifname})"
 579
 580         wpa_supplicant_prepare_interface "$ifname" nl80211 || return 1
 581         wpa_supplicant_prepare_interface "$ifname" nl80211 || {
 582                 iw dev "$ifname" del
 583                 return 1
 584         }
 585         if [ "$mode" = "sta" ]; then
 586                 wpa_supplicant_add_network "$ifname"
 587         else
 588                 wpa_supplicant_add_network "$ifname" "$freq" "$htmode" "$noscan"
 589         fi
 590
 591         NEWSPLIST="${NEWSPLIST}$ifname "
 592
 593         if [ "${NEWAPLIST%% *}" != "${OLDAPLIST%% *}" ]; then
 594                 [ "$spobj" ] && ubus call wpa_supplicant.${phy} config_del "{\"iface\":\"$ifname\"}"
 595                 add_sp=1
 596         fi
 597         [ "$enable" = 0 ] && {
 598                 ubus call wpa_supplicant.${phy} config_del "{\"iface\":\"$ifname\"}"
 599                 ip link set dev "$ifname" down
 600                 return 0
 601         }
 602         [ -z "$spobj" ] && add_sp=1
 603
 604         if [ "$add_sp" = "1" ]; then
 605                 wpa_supplicant_run "$ifname" "$hostapd_ctrl"
 606         else
 607                 ubus call $spobj reload
 608         fi
 609 }
 610
 611 mac80211_setup_supplicant_noctl() {
 612         local enable=$1
 613         local spobj="$(ubus -S list | grep wpa_supplicant.${ifname})"
 614         wpa_supplicant_prepare_interface "$ifname" nl80211 || {
 615                 iw dev "$ifname" del
 616                 return 1
 617         }
 618
 619         wpa_supplicant_add_network "$ifname" "$freq" "$htmode" "$noscan"
 620
 621         NEWSPLIST="${NEWSPLIST}$ifname "
 622         [ "$enable" = 0 ] && {
 623                 ubus call wpa_supplicant.${phy} config_del "{\"iface\":\"$ifname\"}"
 624                 ip link set dev "$ifname" down
 625                 return 0
 626         }
 627         if [ -z "$spobj" ]; then
 628                 wpa_supplicant_run "$ifname"
 629         else
 630                 ubus call $spobj reload
 631         fi
 632 }
 633
 634 mac80211_prepare_iw_htmode() {
 635         case "$htmode" in
 636                 VHT20|HT20) iw_htmode=HT20;;
 637                 HT40*|VHT40|VHT160)
 638                         case "$hwmode" in
 639                                 a)
 640                                         case "$(( ($channel / 4) % 2 ))" in
 641                                                 1) iw_htmode="HT40+" ;;
 642                                                 0) iw_htmode="HT40-";;
 643                                         esac
 644                                 ;;
 645                                 *)
 646                                         case "$htmode" in
 647                                                 HT40+) iw_htmode="HT40+";;
 648                                                 HT40-) iw_htmode="HT40-";;
 649                                                 *)
 650                                                         if [ "$channel" -lt 7 ]; then
 651                                                                 iw_htmode="HT40+"
 652                                                         else
 653                                                                 iw_htmode="HT40-"
 654                                                         fi
 655                                                 ;;
 656                                         esac
 657                                 ;;
 658                         esac
 659                         [ "$auto_channel" -gt 0 ] && iw_htmode="HT40+"
 660                 ;;
 661                 VHT80)
 662                         iw_htmode="80MHZ"
 663                 ;;
 664                 NONE|NOHT)
 665                         iw_htmode="NOHT"
 666                 ;;
 667                 *) iw_htmode="" ;;
 668         esac
 669 }
 670
 671 mac80211_setup_adhoc() {
 672         local enable=$1
 673         json_get_vars bssid ssid key mcast_rate
 674
 675         NEWUMLIST="${NEWUMLIST}$ifname "
 676
 677         [ "$enable" = 0 ] && {
 678                 ip link set dev "$ifname" down
 679                 return 0
 680         }
 681
 682         keyspec=
 683         [ "$auth_type" = "wep" ] && {
 684                 set_default key 1
 685                 case "$key" in
 686                         [1234])
 687                                 local idx
 688                                 for idx in 1 2 3 4; do
 689                                         json_get_var ikey "key$idx"
 690
 691                                         [ -n "$ikey" ] && {
 692                                                 ikey="$(($idx - 1)):$(prepare_key_wep "$ikey")"
 693                                                 [ $idx -eq $key ] && ikey="d:$ikey"
 694                                                 append keyspec "$ikey"
 695                                         }
 696                                 done
 697                         ;;
 698                         *)
 699                                 append keyspec "d:0:$(prepare_key_wep "$key")"
 700                         ;;
 701                 esac
 702         }
 703
 704         brstr=
 705         for br in $basic_rate_list; do
 706                 wpa_supplicant_add_rate brstr "$br"
 707         done
 708
 709         mcval=
 710         [ -n "$mcast_rate" ] && wpa_supplicant_add_rate mcval "$mcast_rate"
 711
 712         iw dev "$ifname" ibss join "$ssid" $freq $iw_htmode fixed-freq $bssid \
 713                 beacon-interval $beacon_int \
 714                 ${brstr:+basic-rates $brstr} \
 715                 ${mcval:+mcast-rate $mcval} \
 716                 ${keyspec:+keys $keyspec}
 717 }
 718
 719 mac80211_setup_mesh() {
 720         local enable=$1
 721         json_get_vars ssid mesh_id mcast_rate
 722
 723         NEWUMLIST="${NEWUMLIST}$ifname "
 724
 725         [ "$enable" = 0 ] && {
 726                 ip link set dev "$ifname" down
 727                 return 0
 728         }
 729
 730         mcval=
 731         [ -n "$mcast_rate" ] && wpa_supplicant_add_rate mcval "$mcast_rate"
 732         [ -n "$mesh_id" ] && ssid="$mesh_id"
 733
 734         iw dev "$ifname" mesh join "$ssid" freq $freq $iw_htmode \
 735                 ${mcval:+mcast-rate $mcval} \
 736                 beacon-interval $beacon_int
 737 }
 738
 739 mac80211_setup_vif() {
 740         local name="$1"
 741         local failed
 742         local action=up
 743
 744         json_select data
 745         json_get_vars ifname
 746         json_select ..
 747
 748         json_select config
 749         json_get_vars mode
 750         json_get_var vif_txpower
 751         json_get_var vif_enable enable 1
 752
 753         [ "$vif_enable" = 1 ] || action=down
 754         logger ip link set dev "$ifname" $action
 755         ip link set dev "$ifname" "$action" || {
 756                 wireless_setup_vif_failed IFUP_ERROR
 757                 json_select ..
 758                 return
 759         }
 760         [ -z "$vif_txpower" ] || iw dev "$ifname" set txpower fixed "${vif_txpower%%.*}00"
 761
 762         case "$mode" in
 763                 mesh)
 764                         wireless_vif_parse_encryption
 765                         freq="$(get_freq "$phy" "$channel")"
 766                         if [ "$wpa" -gt 0 -o "$auto_channel" -gt 0 ] || chan_is_dfs "$phy" "$channel"; then
 767                                 mac80211_setup_supplicant $vif_enable || failed=1
 768                         else
 769                                 mac80211_setup_mesh $vif_enable
 770                         fi
 771                         for var in $MP_CONFIG_INT $MP_CONFIG_BOOL $MP_CONFIG_STRING; do
 772                                 json_get_var mp_val "$var"
 773                                 [ -n "$mp_val" ] && iw dev "$ifname" set mesh_param "$var" "$mp_val"
 774                         done
 775                 ;;
 776                 adhoc)
 777                         wireless_vif_parse_encryption
 778                         if [ "$wpa" -gt 0 -o "$auto_channel" -gt 0 ]; then
 779                                 freq="$(get_freq "$phy" "$channel")"
 780                                 mac80211_setup_supplicant_noctl $vif_enable || failed=1
 781                         else
 782                                 mac80211_setup_adhoc $vif_enable
 783                         fi
 784                 ;;
 785                 sta)
 786                         mac80211_setup_supplicant $vif_enable || failed=1
 787                 ;;
 788         esac
 789
 790         json_select ..
 791         [ -n "$failed" ] || wireless_add_vif "$name" "$ifname"
 792 }
 793
 794 get_freq() {
 795         local phy="$1"
 796         local chan="$2"
 797         iw "$phy" info | grep -E -m1 "(\* ${chan:-....} MHz${chan:+|\\[$chan\\]})" | grep MHz | awk '{print $2}'
 798 }
 799
 800 chan_is_dfs() {
 801         local phy="$1"
 802         local chan="$2"
 803         iw "$phy" info | grep -E -m1 "(\* ${chan:-....} MHz${chan:+|\\[$chan\\]})" | grep -q "MHz.*radar detection"
 804         return $!
 805 }
 806
 807 mac80211_vap_cleanup() {
 808         local service="$1"
 809         local vaps="$2"
 810
 811         for wdev in $vaps; do
 812                 [ "$service" != "none" ] && ubus call ${service}.${phy} config_remove "{\"iface\":\"$wdev\"}"
 813                 ip link set dev "$wdev" down 2>/dev/null
 814                 iw dev "$wdev" del
 815         done
 816 }
 817
 818 mac80211_interface_cleanup() {
 819         local phy="$1"
 820         local primary_ap=$(uci -q -P /var/state get wireless._${phy}.aplist)
 821         primary_ap=${primary_ap%% *}
 822
 823         mac80211_vap_cleanup hostapd "${primary_ap}"
 824         mac80211_vap_cleanup wpa_supplicant "$(uci -q -P /var/state get wireless._${phy}.splist)"
 825         mac80211_vap_cleanup none "$(uci -q -P /var/state get wireless._${phy}.umlist)"
 826 }
 827
 828 mac80211_set_noscan() {
 829         hostapd_noscan=1
 830 }
 831
 832 drv_mac80211_cleanup() {
 833         hostapd_common_cleanup
 834 }
 835
 836 drv_mac80211_setup() {
 837         json_select config
 838         json_get_vars \
 839                 phy macaddr path \
 840                 country chanbw distance \
 841                 txpower antenna_gain \
 842                 rxantenna txantenna \
 843                 frag rts beacon_int:100 htmode
 844         json_get_values basic_rate_list basic_rate
 845         json_select ..
 846
 847         find_phy || {
 848                 echo "Could not find PHY for device '$1'"
 849                 wireless_set_retry 0
 850                 return 1
 851         }
 852
 853         [ -z "$(uci -q -P /var/state show wireless._${phy})" ] && {
 854                 uci -q -P /var/state set wireless._${phy}=phy
 855                 wireless_set_data phy="$phy"
 856         }
 857
 858         OLDAPLIST=$(uci -q -P /var/state get wireless._${phy}.aplist)
 859         OLDSPLIST=$(uci -q -P /var/state get wireless._${phy}.splist)
 860         OLDUMLIST=$(uci -q -P /var/state get wireless._${phy}.umlist)
 861
 862         local wdev
 863         local cwdev
 864         local found
 865
 866         for wdev in $(list_phy_interfaces "$phy"); do
 867                 found=0
 868                 for cwdev in $OLDAPLIST $OLDSPLIST $OLDUMLIST; do
 869                         if [ "$wdev" = "$cwdev" ]; then
 870                                 found=1
 871                                 break
 872                         fi
 873                 done
 874                 if [ "$found" = "0" ]; then
 875                         ip link set dev "$wdev" down
 876                         iw dev "$wdev" del
 877                 fi
 878         done
 879
 880         # convert channel to frequency
 881         [ "$auto_channel" -gt 0 ] || freq="$(get_freq "$phy" "$channel")"
 882
 883         [ -n "$country" ] && {
 884                 iw reg get | grep -q "^country $country:" || {
 885                         iw reg set "$country"
 886                         sleep 1
 887                 }
 888         }
 889
 890         hostapd_conf_file="/var/run/hostapd-$phy.conf"
 891
 892         no_ap=1
 893         macidx=0
 894         staidx=0
 895
 896         [ -n "$chanbw" ] && {
 897                 for file in /sys/kernel/debug/ieee80211/$phy/ath9k*/chanbw /sys/kernel/debug/ieee80211/$phy/ath5k/bwmode; do
 898                         [ -f "$file" ] && echo "$chanbw" > "$file"
 899                 done
 900         }
 901
 902         set_default rxantenna 0xffffffff
 903         set_default txantenna 0xffffffff
 904         set_default distance 0
 905         set_default antenna_gain 0
 906
 907         [ "$txantenna" = "all" ] && txantenna=0xffffffff
 908         [ "$rxantenna" = "all" ] && rxantenna=0xffffffff
 909
 910         iw phy "$phy" set antenna $txantenna $rxantenna >/dev/null 2>&1
 911         iw phy "$phy" set antenna_gain $antenna_gain
 912         iw phy "$phy" set distance "$distance"
 913
 914         if [ -n "$txpower" ]; then
 915                 iw phy "$phy" set txpower fixed "${txpower%%.*}00"
 916         else
 917                 iw phy "$phy" set txpower auto
 918         fi
 919
 920         [ -n "$frag" ] && iw phy "$phy" set frag "${frag%%.*}"
 921         [ -n "$rts" ] && iw phy "$phy" set rts "${rts%%.*}"
 922
 923         has_ap=
 924         hostapd_ctrl=
 925         hostapd_noscan=
 926         for_each_interface "ap" mac80211_check_ap
 927
 928         rm -f "$hostapd_conf_file"
 929
 930         for_each_interface "sta adhoc mesh" mac80211_set_noscan
 931         [ -n "$has_ap" ] && mac80211_hostapd_setup_base "$phy"
 932
 933         mac80211_prepare_iw_htmode
 934         for_each_interface "sta adhoc mesh monitor" mac80211_prepare_vif
 935         NEWAPLIST=
 936         for_each_interface "ap" mac80211_prepare_vif
 937         NEW_MD5=$(test -e "${hostapd_conf_file}" && md5sum ${hostapd_conf_file})
 938         OLD_MD5=$(uci -q -P /var/state get wireless._${phy}.md5)
 939         if [ "${NEWAPLIST}" != "${OLDAPLIST}" ]; then
 940                 mac80211_vap_cleanup hostapd "${OLDAPLIST}"
 941                 [ -n "${NEWAPLIST}" ] && mac80211_iw_interface_add "$phy" "${NEWAPLIST%% *}" __ap || return
 942         fi
 943         local add_ap=0
 944         local primary_ap=${NEWAPLIST%% *}
 945         [ -n "$hostapd_ctrl" ] && {
 946                 if [ -n "$(ubus list | grep hostapd.$primary_ap)" ]; then
 947                         [ "${NEW_MD5}" = "${OLD_MD5}" ] || {
 948                                 ubus call hostapd.$primary_ap reload
 949                         }
 950                 else
 951                         add_ap=1
 952                         ubus wait_for hostapd.$phy
 953                         ubus call hostapd.${phy} config_add "{\"iface\":\"$primary_ap\", \"config\":\"${hostapd_conf_file}\"}"
 954                         local hostapd_pid=$(ubus call service list '{"name": "hostapd"}' | jsonfilter -l 1 -e "@['hostapd'].instances['hostapd-${phy}'].pid")
 955                         wireless_add_process "$hostapd_pid" "/usr/sbin/hostapd" 1
 956                 fi
 957                 ret="$?"
 958                 [ "$ret" != 0 ] && {
 959                         wireless_setup_failed HOSTAPD_START_FAILED
 960                         return
 961                 }
 962         }
 963         uci -q -P /var/state set wireless._${phy}.aplist="${NEWAPLIST}"
 964         uci -q -P /var/state set wireless._${phy}.md5="${NEW_MD5}"
 965
 966         [ "${add_ap}" = 1 ] && sleep 1
 967         for_each_interface "ap" mac80211_setup_vif
 968
 969         NEWSPLIST=
 970         NEWUMLIST=
 971
 972         for_each_interface "sta adhoc mesh monitor" mac80211_setup_vif
 973
 974         uci -q -P /var/state set wireless._${phy}.splist="${NEWSPLIST}"
 975         uci -q -P /var/state set wireless._${phy}.umlist="${NEWUMLIST}"
 976
 977         local foundvap
 978         local dropvap=""
 979         for oldvap in $OLDSPLIST; do
 980                 foundvap=0
 981                 for newvap in $NEWSPLIST; do
 982                         [ "$oldvap" = "$newvap" ] && foundvap=1
 983                 done
 984                 [ "$foundvap" = "0" ] && dropvap="$dropvap $oldvap"
 985         done
 986         [ -n "$dropvap" ] && mac80211_vap_cleanup wpa_supplicant "$dropvap"
 987         wireless_set_up
 988 }
 989
 990 _list_phy_interfaces() {
 991         local phy="$1"
 992         if [ -d "/sys/class/ieee80211/${phy}/device/net" ]; then
 993                 ls "/sys/class/ieee80211/${phy}/device/net" 2>/dev/null;
 994         else
 995                 ls "/sys/class/ieee80211/${phy}/device" 2>/dev/null | grep net: | sed -e 's,net:,,g'
 996         fi
 997 }
 998
 999 list_phy_interfaces() {
1000         local phy="$1"
1001
1002         for dev in $(_list_phy_interfaces "$phy"); do
1003                 readlink "/sys/class/net/${dev}/phy80211" | grep -q "/${phy}\$" || continue
1004                 echo "$dev"
1005         done
1006 }
1007
1008 drv_mac80211_teardown() {
1009         wireless_process_kill_all
1010
1011         json_select data
1012         json_get_vars phy
1013         json_select ..
1014
1015         mac80211_interface_cleanup "$phy"
1016         uci -q -P /var/state revert wireless._${phy}
1017 }
1018
1019 add_driver mac80211