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-rw-r--r--doc/net.example.Linux.in10
-rw-r--r--net/Makefile3
-rw-r--r--net/iw.sh729
3 files changed, 738 insertions, 4 deletions
diff --git a/doc/net.example.Linux.in b/doc/net.example.Linux.in
index c895a17..bff7ede 100644
--- a/doc/net.example.Linux.in
+++ b/doc/net.example.Linux.in
@@ -168,9 +168,13 @@
#-----------------------------------------------------------------------------
# WIRELESS (802.11 support)
-# Wireless can be provided by iwconfig or wpa_supplicant
-# wpa_supplicant is preferred, use the modules directive to prefer iwconfig.
-#modules="iwconfig"
+# Wireless can be provided by iw, iwconfig or wpa_supplicant
+# wpa_supplicant is preferred, use the modules directive to prefer iw or iwconfig.
+#modules="iw" # Most modern drivers
+#modules="iwconfig" # Older WEXT only drivers, i.e. ipw2x00
+#
+# iw
+# emerge net-wireless/iw
#
# iwconfig
# emerge net-wireless/wireless-tools
diff --git a/net/Makefile b/net/Makefile
index ce73c1e..347e89c 100644
--- a/net/Makefile
+++ b/net/Makefile
@@ -13,7 +13,8 @@ SRCS-Linux= iwconfig.sh.in udhcpc.sh.in
INC-Linux= adsl.sh apipa.sh arping.sh bonding.sh br2684ctl.sh bridge.sh \
ccwgroup.sh clip.sh ethtool.sh iproute2.sh ifplugd.sh ip6to4.sh \
ipppd.sh iwconfig.sh netplugd.sh pppd.sh pump.sh tuntap.sh udhcpc.sh \
- vlan.sh macvlan.sh ip6rd.sh firewalld.sh dummy.sh hsr.sh l2tp.sh
+ vlan.sh macvlan.sh ip6rd.sh firewalld.sh dummy.sh hsr.sh l2tp.sh \
+ iw.sh
SRCS-NetBSD= ifwatchd.sh.in
INC-NetBSD= ifwatchd.sh
diff --git a/net/iw.sh b/net/iw.sh
new file mode 100644
index 0000000..de5797b
--- /dev/null
+++ b/net/iw.sh
@@ -0,0 +1,729 @@
+# Copyright (c) 2016 Brian Evans <grknight@gentoo.org>
+# Based on iwconfig.sh Copyright (c) 2007-2008 Roy Marples <roy@marples.name>
+# Released under the 2-clause BSD license.
+
+_config_vars="$_config_vars ssid mode associate_timeout sleep_scan"
+_config_vars="$_config_vars preferred_aps blacklist_aps"
+
+iw_depend()
+{
+ program /usr/sbin/iw
+ after plug
+ before interface
+ provide wireless
+ # Prefer us over iwconfig
+ after iwconfig
+}
+
+_get_ssid()
+{
+ local i=5 ssid=
+
+ while [ ${i} -gt 0 ]; do
+ ssid=$(iw dev "${IFACE}" link \
+ | sed -n -e 's/^.*SSID: \(.*[^ ]\).*/\1/p')
+ if [ -n "${ssid}" ]; then
+ echo "${ssid}"
+ return 0
+ fi
+ sleep 1
+ : $(( i -= 1 ))
+ done
+
+ return 1
+}
+
+_get_ap_mac_address()
+{
+ local mac="$(iw dev "${IFACE}" station dump \
+ | sed -n -e 's/^Station \([0-9a-f:]*\).*/\1/p')"
+ case "${mac}" in
+ "00:00:00:00:00:00") return 1;;
+ "44:44:44:44:44:44") return 1;;
+ "FF:00:00:00:00:00") return 1;;
+ "FF:FF:FF:FF:FF:FF") return 1;;
+ *) echo "${mac}";;
+ esac
+}
+
+iw_get_mode()
+{
+ LC_ALL=C iw dev "${IFACE}" info | \
+ sed -n -e 's/^.*type \(.*[^ ]\).*/\1/p' | \
+ tr '[:upper:]' '[:lower:]'
+}
+
+iw_get_channel()
+{
+ LC_ALL=C iw dev "${IFACE}" info | \
+ sed -n -e 's/^.*channel \(.*\)/\1/p' | cut -d , -f 1 |\
+ tr '[:upper:]' '[:lower:]'
+}
+
+iw_set_mode()
+{
+ local mode="$1"
+ [ "${mode}" = "$(iw_get_mode)" ] && return 0
+
+ # Devicescape stack requires the interface to be down
+ _down
+ iw dev "${IFACE}" set type "${mode}" || return 1
+ _up
+}
+
+iw_get_type()
+{
+ LC_ALL=C iw dev "${IFACE}" info | \
+ sed -n -e 's/^'"$1"' *\([^ ]* [^ ]*\).*/\1/p'
+}
+
+iw_report()
+{
+ local mac= m="connected to"
+ local ssid="$(_get_ssid)"
+ local wep_status="(WEP DISABLED)"
+ local key="$(iw_get_wep_key)"
+ if [ -n "${key}" -a "${key}" != "off" ] ; then
+ wep_status="(WEP ENABLED)"
+ fi
+ local channel="$(iw_get_channel)"
+ [ -n "${channel}" ] && channel="on channel ${channel} "
+ local mode="$(iw_get_mode)"
+ mac="$(_get_ap_mac_address)"
+ [ -n "${mac}" ] && mac=" at ${mac}"
+
+ eindent
+ einfo "${IFACE} ${m} SSID \"${SSID}\"${mac}"
+ einfo "in ${mode} mode ${channel}${wep_status}"
+ eoutdent
+}
+
+iw_get_wep_key()
+{
+ local mac="$1" key= format_key=
+ [ -n "${mac}" ] && mac="$(echo "${mac}" | sed -e 's/://g')"
+ eval key=\$mac_key_${mac}
+ [ -z "${key}" ] && eval key=\$key_${SSIDVAR}
+ if [ -z "${key}" ]; then
+ echo "off"
+ else
+ format_key=${key#s:}
+ if [ "${key}" = "${format_key}" ] ; then
+ # Hex key since it does not start with s:
+ key="d:0:${format_key}"
+ else
+ key="0:${format_key}"
+ fi
+ set -- ${key}
+ echo "${key}"
+ fi
+}
+
+iw_user_config()
+{
+ local conf= var=${SSIDVAR} config=
+ [ -z "${var}" ] && var=${IFVAR}
+
+ config="$(_get_array "iw_${var}")"
+ local IFS="$__IFS"
+ for conf in ${config}; do
+ unset IFS
+ if ! eval iw dev "${IFACE}" "${conf}"; then
+ ewarn "${IFACE} does not support the following configuration commands"
+ ewarn " ${conf}"
+ fi
+ done
+ unset IFS
+}
+
+iw_setup_adhoc()
+{
+ local mode="$1" channel=
+ if [ -z "${SSID}" ]; then
+ eerror "${IFACE} requires an SSID to be set to operate in ${mode} mode"
+ eerror "adjust the ssid_${IFVAR} setting in /etc/conf.d/net"
+ return 1
+ fi
+ SSIDVAR=$(shell_var "${SSID}")
+ local key=$(iw_get_wep_key)
+
+ iw_set_mode "ibss"
+
+ eval channel=\$channel_${SSIDVAR}
+ [ -z "${channel}" ] && eval channel=\$channel_${IFVAR}
+ # Convert channel numbers into MHz for iw
+ # 5MHz increments starting with 2412MHz
+ # We default the channel to 3 (2422MHz)
+ channel=$(expr \( \( "${channel:-3}" - 1 \) \* 5 \) \+ 2412)
+ if [ -z "${key}" -o "${key}" = "off" ]; then
+ iw dev "${IFACE}" ibss join "${SSID}" "${channel}" || return 1
+ else
+ iw dev "${IFACE}" ibss join "${SSID}" "${channel}" \
+ key "${key}"|| return 1
+ fi
+
+ # Finally apply the user Config
+ iw_user_config
+
+ iw_report
+ return 0
+}
+
+iw_wait_for_association()
+{
+ local timeout= i=0
+ eval timeout=\$associate_timeout_${IFVAR}
+ timeout=${timeout:-10}
+
+ [ ${timeout} -eq 0 ] \
+ && vewarn "WARNING: infinite timeout set for association on ${IFACE}"
+
+ while true; do
+ # Use sysfs if we can
+ if [ -e /sys/class/net/"${IFACE}"/carrier ]; then
+ if [ "$(cat /sys/class/net/"${IFACE}"/carrier)" = "1" ]; then
+ local station_mac=$(iw dev "${IFACE}" station dump \
+ | sed -n -e 's/^Station \([0-9a-f:]*\).*/\1/p')
+ # Double check we have an ssid and a non-zero
+ # mac address. This is mainly for buggy
+ # prism54 drivers that always set their
+ # carrier on or buggy madwifi drivers that
+ # sometimes have carrier on and ssid set
+ # without being associated. :/
+ [ -n "$(iw dev "${IFACE}" info |grep ssid)" ] && [ "${station_mac}" != "00:00:00:00:00:00" ] && return 0
+ fi
+ else
+ local atest=
+ eval atest=\$associate_test_${IFVAR}
+ atest=${atest:-mac}
+ if [ "${atest}" = "mac" -o "${atest}" = "all" ]; then
+ [ -n "$(_get_ap_mac_address)" ] && return 0
+ fi
+ if [ "${atest}" = "quality" -o "${atest}" = "all" ]; then
+ [ "$(sed -n -e 's/^.*'"${IFACE}"': *[0-9]* *\([0-9]*\).*/\1/p' \
+ /proc/net/wireless)" != "0" ] && return 0
+ fi
+ fi
+
+ sleep 1
+ [ ${timeout} -eq 0 ] && continue
+ : $(( i += 1 ))
+ [ ${i} -ge ${timeout} ] && return 1
+ done
+ return 1
+}
+
+iw_associate()
+{
+ local mode="${1:-managed}" mac="$2" wep_required="$3"
+ local freq="$4" chan="$5"
+ local w="(WEP Disabled)" key=
+
+ if [ "${wep_required}" = "WPA" ]; then
+ ewarn "\"${SSID}\" uses WPA, please use wpa_supplicant for this SSID"
+ return 1
+ fi
+
+ iw_set_mode "${mode}"
+
+ SSIDVAR=$(shell_var "${SSID}")
+ key="$(iw_get_wep_key "${mac}")"
+ [ -z "${key}" ] && key=off
+ if [ "${wep_required}" = "on" -a "${key}" = "off" ]; then
+ ewarn "WEP key is not set for \"${SSID}\""
+ return 1
+ fi
+ if [ "${wep_required}" = "off" -a "${key}" != "off" ]; then
+ key="off"
+ ewarn "\"${SSID}\" is not WEP enabled"
+ fi
+
+ if [ -n "${key}" -a "${key}" != "off" ]; then
+ if ! iw dev "${IFACE}" connect "${SSID}" keys "${key}" ; then
+ ewarn "${IFACE} does not support setting keys"
+ ewarn "or the parameter \"mac_key_${SSIDVAR}\" or \"key_${SSIDVAR}\" is incorrect"
+ return 1
+ fi
+ w="(WEP Enabled)"
+ fi
+ if ! iw dev "${IFACE}" connect "${SSID}" ; then
+ ewarn "${IFACE} does not support setting SSID to \"${SSID}\""
+ fi
+
+ # Only use channel or frequency
+ if [ -n "${chan}" ]; then
+ iw dev "${IFACE}" set channel "${chan}"
+ elif [ -n "${freq}" ]; then
+ iw dev "${IFACE}" set freq "${freq}"
+ fi
+
+ # Finally apply the user Config
+ iw_user_config
+
+ ebegin "Connecting to \"${SSID}\" in ${mode} mode ${w}"
+
+ if type preassociate >/dev/null 2>&1; then
+ veinfo "Running preassociate function"
+ veindent
+ ( preassociate )
+ local e=$?
+ veoutdent
+ if [ ${e} -eq 0 ]; then
+ veend 1 "preassociate \"${SSID}\" on ${IFACE} failed"
+ return 1
+ fi
+ fi
+
+ if ! iw_wait_for_association; then
+ eend 1
+ return 1
+ fi
+ eend 0
+
+ iw_report
+
+ if type postassociate >/dev/null 2>&1; then
+ veinfo "Running postassociate function"
+ veindent
+ ( postassociate )
+ veoutdent
+ fi
+
+ return 0
+}
+
+iw_scan()
+{
+ local x= i=0 scan=
+ einfo "Scanning for access points"
+ eindent
+
+ # Sleep if required
+ eval x=\$sleep_scan_${IFVAR}
+ [ -n "${x}" ] && sleep "${x}"
+
+ while [ ${i} -lt 3 ]; do
+ local scan="${scan}${scan:+ }$(LC_ALL=C iw dev "${IFACE}" scan 2>/dev/null | sed -e "s/'/'\\\\''/g" -e "s/$/'/g" -e "s/^/'/g")"
+ # If this is the first pass and txpower as off and we have no
+ # results then we need to wait for at least 2 seconds whilst
+ # the interface does an initial scan.
+ if [ "${i}" = "0" -a "${txpowerwasoff}" = "0" ]; then
+ case "${scan}" in
+ "'${IFACE} "*"No scan results"*)
+ sleep 2
+ txpowerwasoff=1
+ continue
+ ;;
+ esac
+ fi
+ : $(( i += 1 ))
+ done
+
+ if [ -z "${scan}" ]; then
+ ewarn "${IFACE} does not support scanning"
+ eoutdent
+ eval x=\$adhoc_ssid_${IFVAR}
+ [ -n "${x}" ] && return 0
+ if [ -n "${preferred_aps}" ]; then
+ [ "${associate_order}" = "forcepreferred" ] || \
+ [ "${associate_order}" = "forcepreferredonly" ] && return 0
+ fi
+ eerror "You either need to set a preferred_aps list in /etc/conf.d/net"
+ eerror " preferred_aps=\"SSID1 SSID2\""
+ eerror " and set associate_order_${IFVAR}=\"forcepreferred\""
+ eerror " or set associate_order_${IFVAR}=\"forcepreferredonly\""
+ eerror "or hardcode the SSID to \"any\" and let the driver find an Access Point"
+ eerror " ssid_${IFVAR}=\"any\""
+ eerror "or configure defaulting to Ad-Hoc when Managed fails"
+ eerror " adhoc_ssid_${IFVAR}=\"WLAN\""
+ eerror "or hardcode the SSID against the interface (not recommended)"
+ eerror " ssid_${IFVAR}=\"SSID\""
+ return 1
+ fi
+
+ APS=-1
+ eval set -- ${scan}
+ for line; do
+ case "${line}" in
+ BSS*)
+ x="${line#* }"
+ : $(( APS += 1 ))
+ eval MAC_${APS}="\""$(echo "${x%(*}" | tr '[:lower:]' '[:upper:]')"\""
+ eval QUALITY_${APS}=0
+ ;;
+ *SSID:*)
+ x=${line#*: }
+ eval SSID_${APS}=\$x
+ ;;
+ *Mode:*)
+ x="$(echo "${line#*:}" | tr '[:upper:]' '[:lower:]')"
+ if [ "${x}" = "master" ]; then
+ eval MODE_${APS}=managed
+ else
+ eval MODE_${APS}=\$x
+ fi
+ ;;
+ *WEP*)
+ eval ENC_${APS}=on
+ ;;
+ *WPA*)
+ eval ENC_${APS}=WPA
+ ;;
+ *"DS Parameter set: channel"*)
+ x=${line#*: channel}
+ x=${x%% *}
+ eval CHAN_${APS}=\$x
+ ;;
+ *signal*)
+ x=${line#*:}
+ x=${x%/*}
+ x="$(echo "${x}" | sed -e 's/[^[:digit:]]//g')"
+ x=${x:-0}
+ eval QUALITY_${APS}=\$x
+ ;;
+ esac
+ done
+
+ if [ -z "${MAC_0}" ]; then
+ ewarn "no access points found"
+ eoutdent
+ return 1
+ fi
+
+ # Sort based on quality
+ local i=0 k=1 a= b= x= t=
+ while [ ${i} -lt ${APS} ]; do
+ : $(( k = i + 1 ))
+ while [ ${k} -le ${APS} ]; do
+ eval a=\$QUALITY_${i}
+ [ -z "${a}" ] && break
+ eval b=\$QUALITY_${k}
+ # Lower values are better signal
+ if [ -n "${b}" -a "${a}" -gt "${b}" ]; then
+ for x in MAC SSID MODE CHAN QUALITY ENC; do
+ eval t=\$${x}_${i}
+ eval ${x}_${i}=\$${x}_${k}
+ eval ${x}_${k}=\$t
+ done
+ fi
+ : $(( k += 1 ))
+ done
+ : $(( i += 1 ))
+ done
+
+ # Strip any duplicates
+ local i=0 k=1 a= b=
+ while [ ${i} -lt ${APS} ]; do
+ : $(( k = i + 1 ))
+ while [ ${k} -le ${APS} ]; do
+ eval a=\$MAC_${i}
+ eval b=\$MAC_${k}
+ if [ "${a}" = "${b}" ]; then
+ eval a=\$QUALITY_${i}
+ eval b=\$QUALITY_${k}
+ local u=${k}
+ # We need to split this into two tests, otherwise bash errors
+ [ -n "${a}" -a -n "${b}" ] && [ "${a}" -lt "${b}" ] && u=${i}
+ unset MAC_${u} SSID_${u} MODE_${u} CHAN_${u} QUALITY_${u} ENC_${u}
+ fi
+ : $(( k += 1 ))
+ done
+ : $(( i += 1 ))
+ done
+
+ local i=0 e= m= s=
+
+ while [ ${i} -le ${APS} ]; do
+ eval x=\$MAC_${i}
+ if [ -z "${x}" ]; then
+ : $(( i += 1 ))
+ continue
+ fi
+
+ eval m=\$MODE_${i}
+ eval s=\$SSID_${i}
+ eval q=\$QUALITY_${i}
+ eval e=\$ENC_${i}
+ if [ -n "${e}" -a "${e}" != "off" ]; then
+ e=", encrypted"
+ else
+ e=""
+ fi
+ if [ -z "${s}" ]; then
+ einfo "Found ${x}, ${m}${e}"
+ else
+ einfo "Found \"${s}\" at ${x}, ${m}${e}"
+ fi
+
+ x="$(echo "${x}" | sed -e 's/://g')"
+ eval x=\$mac_ssid_${x}
+ if [ -n "${x}" ]; then
+ eval SSID_${i}=\$x
+ s=${x}
+ eindent
+ einfo "mapping to \"${x}\""
+ eoutdent
+ fi
+
+ eval set -- $(_flatten_array "blacklist_aps_${IFVAR}")
+ [ $# = 0 ] && eval set -- $(_flatten_array "blacklist_aps")
+ for x; do
+ if [ "${x}" = "${s}" ]; then
+ ewarn "${s} has been blacklisted - not connecting"
+ unset SSID_${i} MAC_${i} ${MODE}_${i} CHAN_${i} QUALITY_${i} ENC_${i}
+ fi
+ done
+ : $(( i += 1 ))
+ done
+ eoutdent
+}
+
+iw_force_preferred()
+{
+ eval set -- $(_flatten_array "preferred_aps_${IFVAR}")
+ [ $# = 0 ] && eval set -- $(_flatten_array "preferred_aps")
+ [ $# = 0 ] && return 1
+
+ ewarn "Trying to force preferred in case they are hidden"
+ for ssid; do
+ local found_AP=false i=0 e=
+ while [ ${i} -le ${APS} ]; do
+ eval e=\$SSID_${i}
+ if [ "${e}" = "${ssid}" ]; then
+ found_AP=true
+ break
+ fi
+ : $(( i += 1 ))
+ done
+ if ! ${found_AP}; then
+ SSID=${ssid}
+ iw_associate && return 0
+ fi
+ done
+
+ ewarn "Failed to associate with any preferred access points on ${IFACE}"
+ return 1
+}
+
+iw_connect_preferred()
+{
+ local ssid= i= mode= mac= enc= freq= chan=
+ eval set -- $(_flatten_array "preferred_aps_${IFVAR}")
+ [ $# = 0 ] && eval set -- $(_flatten_array "preferred_aps")
+
+ for ssid; do
+ unset IFS
+ i=0
+ while [ ${i} -le ${APS} ]; do
+ eval e=\$SSID_${i}
+ if [ "${e}" = "${ssid}" ]; then
+ SSID=${e}
+ eval mode=\$MODE_${i}
+ eval mac=\$MAC_${i}
+ eval enc=\$ENC_${i}
+ eval freq=\$FREQ_${i}
+ eval chan=\$CHAN_${i}
+ iw_associate "${mode}" "${mac}" "${enc}" "${freq}" \
+ "${chan}" && return 0
+ fi
+ : $(( i += 1 ))
+ done
+ done
+
+ return 1
+}
+
+iw_connect_not_preferred()
+{
+ local ssid= i=0 mode= mac= enc= freq= chan= pref=false
+
+ while [ ${i} -le ${APS} ]; do
+ eval e=\$SSID_${i}
+ if [ -n "${e}" ]; then
+ eval set -- $(_flatten_array "preferred_aps_${IFVAR}")
+ [ $# = 0 ] && eval set -- $(_flatten_array "preferred_aps")
+ for ssid; do
+ if [ "${e}" = "${ssid}" ]; then
+ pref=true
+ break
+ fi
+ done
+
+ if ! ${pref}; then
+ SSID=${e}
+ eval mode=\$MODE_${i}
+ eval mac=\$MAC_${i}
+ eval enc=\$ENC_${i}
+ eval freq=\$FREQ_${i}
+ eval chan=\$CHAN_${i}
+ iw_associate "${mode}" "${mac}" "${enc}" "${freq}" \
+ "${chan}" && return 0
+ fi
+ fi
+ : $(( i += 1 ))
+ done
+
+ return 1
+}
+
+iw_defaults()
+{
+ # Turn on the radio
+ iw dev "${IFACE}" set txpower auto 2>/dev/null
+
+ iw dev "${IFACE}" disconnect 2>/dev/null
+ iw dev "${IFACE}" ibss leave 2>/dev/null
+}
+
+iw_configure()
+{
+ local x= APS=-1
+ eval SSID=\$ssid_${IFVAR}
+
+ # Support old variable
+ [ -z "${SSID}" ] && eval SSID=\$essid_${IFVAR}
+
+ # Setup ad-hoc mode?
+ eval x=\$mode_${IFVAR}
+ x=${x:-managed}
+
+ if [ "${x}" = "master" ]; then
+ eerror "Please use hostapd to make this interface an access point"
+ return 1
+ fi
+
+ if [ "${x}" = "ad-hoc" ]; then
+ iw_setup_adhoc
+ return $?
+ fi
+
+ if [ "${x}" != "managed" ]; then
+ eerror "Only managed and ad-hoc are supported"
+ return 1
+ fi
+
+ # Has an SSID been forced?
+ if [ -n "${SSID}" ]; then
+ iw_set_mode "${x}"
+ iw_associate && return 0
+ [ "${SSID}" = "any" ] && iw_force_preferred && return 0
+
+ eval SSID=\$adhoc_ssid_${IFVAR}
+ if [ -n "${SSID}" ]; then
+ iw_setup_adhoc
+ return $?
+ fi
+ return 1
+ fi
+
+ _up
+
+ eval x=\$preferred_aps_${IFVAR}
+ [ -n "${x}" ] && preferred_aps=${x}
+
+ eval x=\$blacklist_aps_${IFVAR}
+ [ -n "${x}" ] && blacklist_aps=${x}
+
+ eval x=\$associate_order_${IFVAR}
+ [ -n "${x}" ] && associate_order=${x}
+ associate_order=${associate_order:-any}
+
+ if [ "${associate_order}" = "forcepreferredonly" ]; then
+ iw_force_preferred && return 0
+ else
+ iw_scan || return 1
+ iw_connect_preferred && return 0
+ [ "${associate_order}" = "forcepreferred" ] || \
+ [ "${associate_order}" = "forceany" ] && \
+ iw_force_preferred && return 0
+ [ "${associate_order}" = "any" ] || \
+ [ "${associate_order}" = "forceany" ] && \
+ iw_connect_not_preferred && return 0
+ fi
+
+ e="associate with"
+ [ -z "${MAC_0}" ] && e="find"
+ [ "${preferred_aps}" = "force" ] || \
+ [ "${preferred_aps}" = "forceonly" ] && \
+ e="force"
+ e="Couldn't ${e} any access points on ${IFACE}"
+
+ eval SSID=\$adhoc_ssid_${IFVAR}
+ if [ -n "${SSID}" ]; then
+ ewarn "${e}"
+ iw_setup_adhoc
+ return $?
+ fi
+
+ eerror "${e}"
+ return 1
+}
+
+iw_pre_start()
+{
+ # We don't configure wireless if we're being called from
+ # the background
+ yesno ${IN_BACKGROUND} && return 0
+
+ service_set_value "SSID" ""
+ _exists || return 0
+
+ if ! _is_wireless; then
+ veinfo "${IFACE} does not appear to be a wireless interface"
+ return 0
+ fi
+
+ # Store the fact that tx-power was off so we default to a longer
+ # wait if our scan returns nothing
+ LC_ALL=C iw dev "${IFACE}" info | sed -e '1d' | grep -q "txpower 0.00"
+ local txpowerwasoff=$?
+
+ iw_defaults
+ iw_user_config
+
+ # Set the base metric to be 2000
+ metric=2000
+
+ # Check for rf_kill - only ipw supports this at present, but other
+ # cards may in the future.
+ if [ -e /sys/class/net/"${IFACE}"/device/rf_kill ]; then
+ if [ $(cat /sys/class/net/"${IFACE}"/device/rf_kill) != "0" ]; then
+ eerror "Wireless radio has been killed for interface ${IFACE}"
+ return 1
+ fi
+ fi
+
+ einfo "Configuring wireless network for ${IFACE}"
+
+ # Are we a proper IEEE device?
+ # Most devices reutrn IEEE 802.11b/g - but intel cards return IEEE
+ # in lower case and RA cards return RAPCI or similar
+ # which really sucks :(
+ # For the time being, we will test prism54 not loading firmware
+ # which reports NOT READY!
+ x="$(iw_get_type)"
+ if [ "${x}" = "NOT READY!" ]; then
+ eerror "Looks like there was a problem loading the firmware for ${IFACE}"
+ return 1
+ fi
+
+ if iw_configure; then
+ service_set_value "SSID" "${SSID}"
+ return 0
+ fi
+
+ eerror "Failed to configure wireless for ${IFACE}"
+ iw_defaults
+ iw dev "${IFACE}" set txpower fixed 0 2>/dev/null
+ unset SSID SSIDVAR
+ _down
+ return 1
+}
+
+iw_post_stop()
+{
+ yesno ${IN_BACKGROUND} && return 0
+ _exists || return 0
+ iw_defaults
+ iw dev "${IFACE}" set txpower fixed 0 2>/dev/null
+}