net/modemmanager/files/modemmanager.proto

   1 #!/bin/sh
   2 # Copyright (C) 2016-2019 Aleksander Morgado <aleksander@aleksander.es>
   3
   4 [ -x /usr/bin/mmcli ] || exit 0
   5 [ -x /usr/sbin/pppd ] || exit 0
   6
   7 [ -n "$INCLUDE_ONLY" ] || {
   8         . /lib/functions.sh
   9         . ../netifd-proto.sh
  10         . ./ppp.sh
  11         init_proto "$@"
  12 }
  13
  14 cdr2mask ()
  15 {
  16         # Number of args to shift, 255..255, first non-255 byte, zeroes
  17         set -- $(( 5 - ($1 / 8) )) 255 255 255 255 $(( (255 << (8 - ($1 % 8))) & 255 )) 0 0 0
  18         if [ "$1" -gt 1 ]
  19         then
  20                 shift "$1"
  21         else
  22                 shift
  23         fi
  24         echo "${1-0}"."${2-0}"."${3-0}"."${4-0}"
  25 }
  26
  27 # This method expects as first argument a list of key-value pairs, as returned by mmcli --output-keyvalue
  28 # The second argument must be exactly the name of the field to read
  29 #
  30 # Sample output:
  31 #     $ mmcli -m 0 -K
  32 #     modem.dbus-path                                 : /org/freedesktop/ModemManager1/Modem/0
  33 #     modem.generic.device-identifier                 : ed6eff2e3e0f90463da1c2a755b2acacd1335752
  34 #     modem.generic.manufacturer                      : Dell Inc.
  35 #     modem.generic.model                             : DW5821e Snapdragon X20 LTE
  36 #     modem.generic.revision                          : T77W968.F1.0.0.4.0.GC.009\n026
  37 #     modem.generic.carrier-configuration             : GCF
  38 #     modem.generic.carrier-configuration-revision    : 08E00009
  39 #     modem.generic.hardware-revision                 : DW5821e Snapdragon X20 LTE
  40 #     ....
  41 modemmanager_get_field() {
  42         local list=$1
  43         local field=$2
  44         local value=""
  45
  46         [ -z "${list}" ] || [ -z "${field}" ] && return
  47
  48         # there is always at least a whitespace after each key, and we use that as part of the
  49         # key matching we do (e.g. to avoid getting 'modem.generic.state-failed-reason' as a result
  50         # when grepping for 'modem.generic.state'.
  51         line=$(echo "${list}" | grep "${field} ")
  52         value=$(echo ${line#*:})
  53
  54         # not found?
  55         [ -n "${value}" ] || return 2
  56
  57         # only print value if set
  58         [ "${value}" != "--" ] && echo "${value}"
  59         return 0
  60 }
  61
  62 # build a comma-separated list of values from the list
  63 modemmanager_get_multivalue_field() {
  64         local list=$1
  65         local field=$2
  66         local value=""
  67         local length idx item
  68
  69         [ -z "${list}" ] || [ -z "${field}" ] && return
  70
  71         length=$(modemmanager_get_field "${list}" "${field}.length")
  72         [ -n "${length}" ] || return 0
  73         [ "$length" -ge 1 ] || return 0
  74
  75         idx=1
  76         while [ $idx -le "$length" ]; do
  77                 item=$(modemmanager_get_field "${list}" "${field}.value\[$idx\]")
  78                 [ -n "${item}" ] && [ "${item}" != "--" ] && {
  79                         [ -n "${value}" ] && value="${value}, "
  80                         value="${value}${item}"
  81                 }
  82                 idx=$((idx + 1))
  83         done
  84
  85         # nothing built?
  86         [ -n "${value}" ] || return 2
  87
  88         # only print value if set
  89         echo "${value}"
  90         return 0
  91 }
  92
  93 modemmanager_cleanup_connection() {
  94         local modemstatus="$1"
  95
  96         local bearercount idx bearerpath
  97
  98         bearercount=$(modemmanager_get_field "${modemstatus}" "modem.generic.bearers.length")
  99
 100         # do nothing if no bearers reported
 101         [ -n "${bearercount}" ] && [ "$bearercount" -ge 1 ] && {
 102                 # explicitly disconnect just in case
 103                 mmcli --modem="${device}" --simple-disconnect >/dev/null 2>&1
 104                 # and remove all bearer objects, if any found
 105                 idx=1
 106                 while [ $idx -le "$bearercount" ]; do
 107                         bearerpath=$(modemmanager_get_field "${modemstatus}" "modem.generic.bearers.value\[$idx\]")
 108                         mmcli --modem "${device}" --delete-bearer="${bearerpath}" >/dev/null 2>&1
 109                         idx=$((idx + 1))
 110                 done
 111         }
 112 }
 113
 114 modemmanager_connected_method_ppp_ipv4() {
 115         local interface="$1"
 116         local ttyname="$2"
 117         local username="$3"
 118         local password="$4"
 119         local allowedauth="$5"
 120
 121         # all auth types are allowed unless a user given list is given
 122         local authopts
 123         local pap=1
 124         local chap=1
 125         local mschap=1
 126         local mschapv2=1
 127         local eap=1
 128
 129         [ -n "$allowedauth" ] && {
 130                 pap=0 chap=0 mschap=0 mschapv2=0 eap=0
 131                 for auth in $allowedauth; do
 132                         case $auth in
 133                                 "pap") pap=1 ;;
 134                                 "chap") chap=1 ;;
 135                                 "mschap") mschap=1 ;;
 136                                 "mschapv2") mschapv2=1 ;;
 137                                 "eap") eap=1 ;;
 138                                 *) ;;
 139                         esac
 140                 done
 141         }
 142
 143         [ $pap -eq 1 ] || append authopts "refuse-pap"
 144         [ $chap -eq 1 ] || append authopts "refuse-chap"
 145         [ $mschap -eq 1 ] || append authopts "refuse-mschap"
 146         [ $mschapv2 -eq 1 ] || append authopts "refuse-mschap-v2"
 147         [ $eap -eq 1 ] || append authopts "refuse-eap"
 148
 149         proto_run_command "${interface}" /usr/sbin/pppd \
 150                 "${ttyname}" \
 151                 115200 \
 152                 nodetach \
 153                 noaccomp \
 154                 nobsdcomp \
 155                 nopcomp \
 156                 novj \
 157                 noauth \
 158                 $authopts \
 159                 ${username:+ user "$username"} \
 160                 ${password:+ password "$password"} \
 161                 lcp-echo-failure 5 \
 162                 lcp-echo-interval 15 \
 163                 lock \
 164                 crtscts \
 165                 nodefaultroute \
 166                 usepeerdns \
 167                 ipparam "${interface}" \
 168                 ip-up-script /lib/netifd/ppp-up \
 169                 ip-down-script /lib/netifd/ppp-down
 170 }
 171
 172 modemmanager_disconnected_method_ppp_ipv4() {
 173         local interface="$1"
 174
 175         echo "running disconnection (ppp method)"
 176
 177         [ -n "${ERROR}" ] && {
 178                 local errorstring
 179                 errorstring=$(ppp_exitcode_tostring "${ERROR}")
 180                 case "$ERROR" in
 181                         0)
 182                                 ;;
 183                         2)
 184                                 proto_notify_error "$interface" "$errorstring"
 185                                 proto_block_restart "$interface"
 186                                 ;;
 187                         *)
 188                                 proto_notify_error "$interface" "$errorstring"
 189                                 ;;
 190                 esac
 191         } || echo "pppd result code not given"
 192
 193         proto_kill_command "$interface"
 194 }
 195
 196 modemmanager_connected_method_dhcp_ipv4() {
 197         local interface="$1"
 198         local wwan="$2"
 199         local metric="$3"
 200
 201         proto_init_update "${wwan}" 1
 202         proto_set_keep 1
 203         proto_send_update "${interface}"
 204
 205         json_init
 206         json_add_string name "${interface}_4"
 207         json_add_string ifname "@${interface}"
 208         json_add_string proto "dhcp"
 209         proto_add_dynamic_defaults
 210         [ -n "$metric" ] && json_add_int metric "${metric}"
 211         json_close_object
 212         ubus call network add_dynamic "$(json_dump)"
 213 }
 214
 215 modemmanager_connected_method_static_ipv4() {
 216         local interface="$1"
 217         local wwan="$2"
 218         local address="$3"
 219         local prefix="$4"
 220         local gateway="$5"
 221         local mtu="$6"
 222         local dns1="$7"
 223         local dns2="$8"
 224         local metric="$9"
 225
 226         local mask=""
 227
 228         [ -n "${address}" ] || {
 229                 proto_notify_error "${interface}" ADDRESS_MISSING
 230                 return
 231         }
 232
 233         [ -n "${prefix}" ] || {
 234                 proto_notify_error "${interface}" PREFIX_MISSING
 235                 return
 236         }
 237         mask=$(cdr2mask "${prefix}")
 238
 239         [ -n "${mtu}" ] && /sbin/ip link set dev "${wwan}" mtu "${mtu}"
 240
 241         proto_init_update "${wwan}" 1
 242         proto_set_keep 1
 243         echo "adding IPv4 address ${address}, netmask ${mask}"
 244         proto_add_ipv4_address "${address}" "${mask}"
 245         [ -n "${gateway}" ] && {
 246                 echo "adding default IPv4 route via ${gateway}"
 247                 proto_add_ipv4_route "0.0.0.0" "0" "${gateway}" "${address}"
 248         }
 249         [ -n "${dns1}" ] && {
 250                 echo "adding primary DNS at ${dns1}"
 251                 proto_add_dns_server "${dns1}"
 252         }
 253         [ -n "${dns2}" ] && {
 254                 echo "adding secondary DNS at ${dns2}"
 255                 proto_add_dns_server "${dns2}"
 256         }
 257         [ -n "$metric" ] && json_add_int metric "${metric}"
 258         proto_send_update "${interface}"
 259 }
 260
 261 modemmanager_connected_method_dhcp_ipv6() {
 262         local interface="$1"
 263         local wwan="$2"
 264         local metric="$3"
 265
 266         proto_init_update "${wwan}" 1
 267         proto_set_keep 1
 268         proto_send_update "${interface}"
 269
 270         json_init
 271         json_add_string name "${interface}_6"
 272         json_add_string ifname "@${interface}"
 273         json_add_string proto "dhcpv6"
 274         proto_add_dynamic_defaults
 275         json_add_string extendprefix 1 # RFC 7278: Extend an IPv6 /64 Prefix to LAN
 276         [ -n "$metric" ] && json_add_int metric "${metric}"
 277         json_close_object
 278         ubus call network add_dynamic "$(json_dump)"
 279 }
 280
 281 modemmanager_connected_method_static_ipv6() {
 282         local interface="$1"
 283         local wwan="$2"
 284         local address="$3"
 285         local prefix="$4"
 286         local gateway="$5"
 287         local mtu="$6"
 288         local dns1="$7"
 289         local dns2="$8"
 290         local metric="$9"
 291
 292         [ -n "${address}" ] || {
 293                 proto_notify_error "${interface}" ADDRESS_MISSING
 294                 return
 295         }
 296
 297         [ -n "${prefix}" ] || {
 298                 proto_notify_error "${interface}" PREFIX_MISSING
 299                 return
 300         }
 301
 302         [ -n "${mtu}" ] && /sbin/ip link set dev "${wwan}" mtu "${mtu}"
 303
 304         proto_init_update "${wwan}" 1
 305         proto_set_keep 1
 306         echo "adding IPv6 address ${address}, prefix ${prefix}"
 307         proto_add_ipv6_address "${address}" "128"
 308         proto_add_ipv6_prefix "${address}/${prefix}"
 309         [ -n "${gateway}" ] && {
 310                 echo "adding default IPv6 route via ${gateway}"
 311                 proto_add_ipv6_route "${gateway}" "128"
 312                 proto_add_ipv6_route "::0" "0" "${gateway}" "" "" "${address}/${prefix}"
 313         }
 314         [ -n "${dns1}" ] && {
 315                 echo "adding primary DNS at ${dns1}"
 316                 proto_add_dns_server "${dns1}"
 317         }
 318         [ -n "${dns2}" ] && {
 319                 echo "adding secondary DNS at ${dns2}"
 320                 proto_add_dns_server "${dns2}"
 321         }
 322         [ -n "$metric" ] && json_add_int metric "${metric}"
 323         proto_send_update "${interface}"
 324 }
 325
 326 proto_modemmanager_init_config() {
 327         available=1
 328         no_device=1
 329         proto_config_add_string device
 330         proto_config_add_string apn
 331         proto_config_add_string 'allowedauth:list(string)'
 332         proto_config_add_string username
 333         proto_config_add_string password
 334         proto_config_add_string allowedmode
 335         proto_config_add_string preferredmode
 336         proto_config_add_string pincode
 337         proto_config_add_string iptype
 338         proto_config_add_string plmn
 339         proto_config_add_int signalrate
 340         proto_config_add_boolean lowpower
 341         proto_config_add_boolean allow_roaming
 342         proto_config_add_defaults
 343 }
 344
 345 # Append param to the global 'connectargs' variable.
 346 append_param() {
 347         local param="$1"
 348
 349         [ -z "$param" ] && return
 350         [ -z "$connectargs" ] || connectargs="${connectargs},"
 351         connectargs="${connectargs}${param}"
 352 }
 353
 354 modemmanager_set_allowed_mode() {
 355         local device="$1"
 356         local interface="$2"
 357         local allowedmode="$3"
 358
 359         echo "setting allowed mode to '${allowedmode}'"
 360         mmcli --modem="${device}" --set-allowed-modes="${allowedmode}" || {
 361                 proto_notify_error "${interface}" MM_INVALID_ALLOWED_MODES_LIST
 362                 proto_block_restart "${interface}"
 363                 return 1
 364         }
 365 }
 366
 367 modemmanager_check_state() {
 368         local device="$1"
 369         local modemstatus="$2"
 370         local pincode="$3"
 371
 372         local state reason
 373
 374         state="$(modemmanager_get_field "${modemstatus}" "state")"
 375         state="${state%% *}"
 376         reason="$(modemmanager_get_field "${modemstatus}" "state-failed-reason")"
 377
 378         case "$state" in
 379                 "failed")
 380                         case "$reason" in
 381                                 "sim-missing")
 382                                         echo "SIM missing"
 383                                         proto_notify_error "${interface}" MM_FAILED_REASON_SIM_MISSING
 384                                         proto_block_restart "${interface}"
 385                                         return 1
 386                                         ;;
 387                                 *)
 388                                         proto_notify_error "${interface}" MM_FAILED_REASON_UNKNOWN
 389                                         proto_block_restart "${interface}"
 390                                         return 1
 391                                         ;;
 392                         esac
 393                         ;;
 394                 "locked")
 395                         if [ -n "$pincode" ]; then
 396                                 mmcli --modem="${device}" -i any --pin=${pincode} || {
 397                                         proto_notify_error "${interface}" MM_PINCODE_WRONG
 398                                         proto_block_restart "${interface}"
 399                                         return 1
 400                                 }
 401                         else
 402                                 echo "PIN required"
 403                                 proto_notify_error "${interface}" MM_PINCODE_REQUIRED
 404                                 proto_block_restart "${interface}"
 405                                 return 1
 406                         fi
 407                         ;;
 408         esac
 409 }
 410
 411 modemmanager_set_preferred_mode() {
 412         local device="$1"
 413         local interface="$2"
 414         local allowedmode="$3"
 415         local preferredmode="$4"
 416
 417         [ -z "${preferredmode}" ] && {
 418                 echo "no preferred mode configured"
 419                 proto_notify_error "${interface}" MM_NO_PREFERRED_MODE_CONFIGURED
 420                 proto_block_restart "${interface}"
 421                 return 1
 422         }
 423
 424         [ -z "${allowedmode}" ] && {
 425                 echo "no allowed mode configured"
 426                 proto_notify_error "${interface}" MM_NO_ALLOWED_MODE_CONFIGURED
 427                 proto_block_restart "${interface}"
 428                 return 1
 429         }
 430
 431         echo "setting preferred mode to '${preferredmode}' (${allowedmode})"
 432         mmcli --modem="${device}" \
 433                 --set-preferred-mode="${preferredmode}" \
 434                 --set-allowed-modes="${allowedmode}" || {
 435                 proto_notify_error "${interface}" MM_FAILED_SETTING_PREFERRED_MODE
 436                 proto_block_restart "${interface}"
 437                 return 1
 438         }
 439 }
 440
 441 proto_modemmanager_setup() {
 442         local interface="$1"
 443
 444         local modempath modemstatus bearercount bearerpath connectargs bearerstatus beareriface
 445         local bearermethod_ipv4 bearermethod_ipv6 auth cliauth
 446         local operatorname operatorid registration accesstech signalquality
 447         local allowedmode preferredmode
 448
 449         local device apn allowedauth username password pincode
 450         local iptype plmn metric signalrate allow_roaming
 451
 452         local address prefix gateway mtu dns1 dns2
 453
 454         json_get_vars device apn allowedauth username password
 455         json_get_vars pincode iptype plmn metric signalrate allow_roaming
 456         json_get_vars allowedmode preferredmode
 457
 458         # validate sysfs path given in config
 459         [ -n "${device}" ] || {
 460                 echo "No device specified"
 461                 proto_notify_error "${interface}" NO_DEVICE
 462                 proto_set_available "${interface}" 0
 463                 return 1
 464         }
 465
 466         # validate that ModemManager is handling the modem at the sysfs path
 467         modemstatus=$(mmcli --modem="${device}" --output-keyvalue)
 468         modempath=$(modemmanager_get_field "${modemstatus}" "modem.dbus-path")
 469         [ -n "${modempath}" ] || {
 470                 echo "Device not managed by ModemManager"
 471                 proto_notify_error "${interface}" DEVICE_NOT_MANAGED
 472                 proto_set_available "${interface}" 0
 473                 return 1
 474         }
 475         echo "modem available at ${modempath}"
 476
 477         modemmanager_check_state "$device" "${modemstatus}" "$pincode"
 478         [ "$?" -ne "0" ] && return 1
 479
 480         [ -z "${allowedmode}" ] || {
 481                 case "$allowedmode" in
 482                         "2g")
 483                                 modemmanager_set_allowed_mode "$device" \
 484                                         "$interface" "2g"
 485                                 ;;
 486                         "3g")
 487                                 modemmanager_set_allowed_mode "$device" \
 488                                         "$interface" "3g"
 489                                 ;;
 490                         "4g")
 491                                 modemmanager_set_allowed_mode "$device" \
 492                                         "$interface" "4g"
 493                                 ;;
 494                         "5g")
 495                                 modemmanager_set_allowed_mode "$device" \
 496                                         "$interface" "5g"
 497                                 ;;
 498                         *)
 499                                 modemmanager_set_preferred_mode "$device" \
 500                                         "$interface" "${allowedmode}" "${preferredmode}"
 501                                 ;;
 502                 esac
 503                 # check error for allowed_mode and preferred_mode function call
 504                 [ "$?" -ne "0" ] && return 1
 505         }
 506
 507         # always cleanup before attempting a new connection, just in case
 508         modemmanager_cleanup_connection "${modemstatus}"
 509
 510         # if allowedauth list given, build option string
 511         for auth in $allowedauth; do
 512                 cliauth="${cliauth}${cliauth:+|}$auth"
 513         done
 514
 515         # setup connect args; APN mandatory (even if it may be empty)
 516         echo "starting connection with apn '${apn}'..."
 517         proto_notify_error "${interface}" MM_CONNECT_IN_PROGRESS
 518
 519         # setup allow-roaming parameter
 520         if [ -n "${allow_roaming}" ] && [ "${allow_roaming}" -eq 0 ];then
 521                 allow_roaming="no"
 522         else
 523                 # allowed unless a user set the opposite
 524                 allow_roaming="yes"
 525         fi
 526
 527         # Append options to 'connectargs' variable
 528         append_param "apn=${apn}"
 529         append_param "allow-roaming=${allow_roaming}"
 530         append_param "${iptype:+ip-type=${iptype}}"
 531         append_param "${plmn:+operator-id=${plmn}}"
 532         append_param "${cliauth:+allowed-auth=${cliauth}}"
 533         append_param "${username:+user=${username}}"
 534         append_param "${password:+password=${password}}"
 535
 536         mmcli --modem="${device}" --timeout 120 --simple-connect="${connectargs}" || {
 537                 proto_notify_error "${interface}" MM_CONNECT_FAILED
 538                 proto_block_restart "${interface}"
 539                 return 1
 540         }
 541
 542         # check if Signal refresh rate is set
 543         if [ -n "${signalrate}" ] && [ "${signalrate}" -eq "${signalrate}" ] 2>/dev/null; then
 544                 echo "setting signal refresh rate to ${signalrate} seconds"
 545                 mmcli --modem="${device}" --signal-setup="${signalrate}"
 546         else
 547                 echo "signal refresh rate is not set"
 548         fi
 549
 550         # log additional useful information
 551         modemstatus=$(mmcli --modem="${device}" --output-keyvalue)
 552         operatorname=$(modemmanager_get_field "${modemstatus}" "modem.3gpp.operator-name")
 553         [ -n "${operatorname}" ] && echo "network operator name: ${operatorname}"
 554         operatorid=$(modemmanager_get_field "${modemstatus}" "modem.3gpp.operator-code")
 555         [ -n "${operatorid}" ] && echo "network operator MCCMNC: ${operatorid}"
 556         registration=$(modemmanager_get_field "${modemstatus}" "modem.3gpp.registration-state")
 557         [ -n "${registration}" ] && echo "registration type: ${registration}"
 558         accesstech=$(modemmanager_get_multivalue_field "${modemstatus}" "modem.generic.access-technologies")
 559         [ -n "${accesstech}" ] && echo "access technology: ${accesstech}"
 560         signalquality=$(modemmanager_get_field "${modemstatus}" "modem.generic.signal-quality.value")
 561         [ -n "${signalquality}" ] && echo "signal quality: ${signalquality}%"
 562
 563         # we won't like it if there are more than one bearers, as that would mean the
 564         # user manually created them, and that's unsupported by this proto
 565         bearercount=$(modemmanager_get_field "${modemstatus}" "modem.generic.bearers.length")
 566         [ -n "${bearercount}" ] && [ "$bearercount" -eq 1 ] || {
 567                 proto_notify_error "${interface}" INVALID_BEARER_LIST
 568                 return 1
 569         }
 570
 571         # load connected bearer information
 572         bearerpath=$(modemmanager_get_field "${modemstatus}" "modem.generic.bearers.value\[1\]")
 573         bearerstatus=$(mmcli --bearer "${bearerpath}" --output-keyvalue)
 574
 575         # load network interface and method information
 576         beareriface=$(modemmanager_get_field "${bearerstatus}" "bearer.status.interface")
 577         bearermethod_ipv4=$(modemmanager_get_field "${bearerstatus}" "bearer.ipv4-config.method")
 578         bearermethod_ipv6=$(modemmanager_get_field "${bearerstatus}" "bearer.ipv6-config.method")
 579
 580         # setup IPv4
 581         [ -n "${bearermethod_ipv4}" ] && {
 582                 echo "IPv4 connection setup required in interface ${interface}: ${bearermethod_ipv4}"
 583                 case "${bearermethod_ipv4}" in
 584                 "dhcp")
 585                         modemmanager_connected_method_dhcp_ipv4 "${interface}" "${beareriface}" "${metric}"
 586                         ;;
 587                 "static")
 588                         address=$(modemmanager_get_field "${bearerstatus}" "bearer.ipv4-config.address")
 589                         prefix=$(modemmanager_get_field "${bearerstatus}" "bearer.ipv4-config.prefix")
 590                         gateway=$(modemmanager_get_field "${bearerstatus}" "bearer.ipv4-config.gateway")
 591                         mtu=$(modemmanager_get_field "${bearerstatus}" "bearer.ipv4-config.mtu")
 592                         dns1=$(modemmanager_get_field "${bearerstatus}" "bearer.ipv4-config.dns.value\[1\]")
 593                         dns2=$(modemmanager_get_field "${bearerstatus}" "bearer.ipv4-config.dns.value\[2\]")
 594                         modemmanager_connected_method_static_ipv4 "${interface}" "${beareriface}" "${address}" "${prefix}" "${gateway}" "${mtu}" "${dns1}" "${dns2}" "${metric}"
 595                         ;;
 596                 "ppp")
 597                         modemmanager_connected_method_ppp_ipv4 "${interface}" "${beareriface}" "${username}" "${password}" "${allowedauth}"
 598                         ;;
 599                 *)
 600                         proto_notify_error "${interface}" UNKNOWN_METHOD
 601                         return 1
 602                         ;;
 603                 esac
 604         }
 605
 606         # setup IPv6
 607         # note: if using ipv4v6, both IPv4 and IPv6 settings will have the same MTU and metric values reported
 608         [ -n "${bearermethod_ipv6}" ] && {
 609                 echo "IPv6 connection setup required in interface ${interface}: ${bearermethod_ipv6}"
 610                 case "${bearermethod_ipv6}" in
 611                 "dhcp")
 612                         modemmanager_connected_method_dhcp_ipv6 "${interface}" "${beareriface}" "${metric}"
 613                         ;;
 614                 "static")
 615                         address=$(modemmanager_get_field "${bearerstatus}" "bearer.ipv6-config.address")
 616                         prefix=$(modemmanager_get_field "${bearerstatus}" "bearer.ipv6-config.prefix")
 617                         gateway=$(modemmanager_get_field "${bearerstatus}" "bearer.ipv6-config.gateway")
 618                         mtu=$(modemmanager_get_field "${bearerstatus}" "bearer.ipv6-config.mtu")
 619                         dns1=$(modemmanager_get_field "${bearerstatus}" "bearer.ipv6-config.dns.value\[1\]")
 620                         dns2=$(modemmanager_get_field "${bearerstatus}" "bearer.ipv6-config.dns.value\[2\]")
 621                         modemmanager_connected_method_static_ipv6 "${interface}" "${beareriface}" "${address}" "${prefix}" "${gateway}" "${mtu}" "${dns1}" "${dns2}" "${metric}"
 622                         ;;
 623                 "ppp")
 624                         proto_notify_error "${interface}" "unsupported method"
 625                         return 1
 626                         ;;
 627                 *)
 628                         proto_notify_error "${interface}" UNKNOWN_METHOD
 629                         return 1
 630                         ;;
 631                 esac
 632         }
 633
 634         return 0
 635 }
 636
 637 proto_modemmanager_teardown() {
 638         local interface="$1"
 639
 640         local modemstatus bearerpath errorstring
 641         local bearermethod_ipv4 bearermethod_ipv6
 642
 643         local device lowpower iptype
 644         json_get_vars device lowpower iptype
 645
 646         echo "stopping network"
 647
 648         # load connected bearer information, just the first one should be ok
 649         modemstatus=$(mmcli --modem="${device}" --output-keyvalue)
 650         bearerpath=$(modemmanager_get_field "${modemstatus}" "modem.generic.bearers.value\[1\]")
 651         [ -n "${bearerpath}" ] || {
 652                 echo "couldn't load bearer path: disconnecting anyway"
 653                 mmcli --modem="${device}" --simple-disconnect >/dev/null 2>&1
 654                 return
 655         }
 656
 657         # load bearer connection methods
 658         bearerstatus=$(mmcli --bearer "${bearerpath}" --output-keyvalue)
 659         bearermethod_ipv4=$(modemmanager_get_field "${bearerstatus}" "bearer.ipv4-config.method")
 660         [ -n "${bearermethod_ipv4}" ] &&
 661                 echo "IPv4 connection teardown required in interface ${interface}: ${bearermethod_ipv4}"
 662         bearermethod_ipv6=$(modemmanager_get_field "${bearerstatus}" "bearer.ipv6-config.method")
 663         [ -n "${bearermethod_ipv6}" ] &&
 664                 echo "IPv6 connection teardown required in interface ${interface}: ${bearermethod_ipv6}"
 665
 666         # disconnection handling only requires special treatment in IPv4/PPP
 667         [ "${bearermethod_ipv4}" = "ppp" ] && modemmanager_disconnected_method_ppp_ipv4 "${interface}"
 668
 669         # disconnect
 670         mmcli --modem="${device}" --simple-disconnect ||
 671                 proto_notify_error "${interface}" DISCONNECT_FAILED
 672
 673         # disable
 674         mmcli --modem="${device}" --disable
 675
 676         # low power, only if requested
 677         [ "${lowpower:-0}" -lt 1 ] ||
 678                 mmcli --modem="${device}" --set-power-state-low
 679 }
 680
 681 [ -n "$INCLUDE_ONLY" ] || {
 682         add_protocol modemmanager
 683 }