mac80211: create channel list for fixed channel operation
[openwrt/openwrt.git] / package / kernel / mac80211 / files / lib / netifd / wireless / mac80211.sh
index 12af2d1d0e8e756937da3d94d72f058bedb6ebbb..5214704830ff0bb8c99cdcb2158c1e576eed84ef 100644 (file)
@@ -15,9 +15,12 @@ MP_CONFIG_INT="mesh_retry_timeout mesh_confirm_timeout mesh_holding_timeout mesh
 MP_CONFIG_BOOL="mesh_auto_open_plinks mesh_fwding"
 MP_CONFIG_STRING="mesh_power_mode"
 
-iw() {
-       command iw $@ || logger -t mac80211 "Failed command: iw $@"
-}
+NEWAPLIST=
+OLDAPLIST=
+NEWSPLIST=
+OLDSPLIST=
+NEWUMLIST=
+OLDUMLIST=
 
 drv_mac80211_init_device_config() {
        hostapd_common_add_device_config
@@ -25,8 +28,9 @@ drv_mac80211_init_device_config() {
        config_add_string path phy 'macaddr:macaddr'
        config_add_string hwmode
        config_add_string tx_burst
+       config_add_string distance
        config_add_int beacon_int chanbw frag rts
-       config_add_int rxantenna txantenna antenna_gain txpower distance
+       config_add_int rxantenna txantenna antenna_gain txpower
        config_add_boolean noscan ht_coex acs_exclude_dfs
        config_add_array ht_capab
        config_add_array channels
@@ -58,7 +62,8 @@ drv_mac80211_init_iface_config() {
 
        config_add_string 'macaddr:macaddr' ifname
 
-       config_add_boolean wds powersave
+       config_add_boolean wds powersave enable
+       config_add_string wds_bridge
        config_add_int maxassoc
        config_add_int max_listen_int
        config_add_int dtim_period
@@ -96,7 +101,6 @@ mac80211_hostapd_setup_base() {
        json_select config
 
        [ "$auto_channel" -gt 0 ] && channel=acs_survey
-       [ "$auto_channel" -gt 0 ] && json_get_values channel_list channels
 
        [ "$auto_channel" -gt 0 ] && json_get_vars acs_exclude_dfs
        [ -n "$acs_exclude_dfs" ] && [ "$acs_exclude_dfs" -gt 0 ] &&
@@ -104,8 +108,14 @@ mac80211_hostapd_setup_base() {
 
        json_get_vars noscan ht_coex
        json_get_values ht_capab_list ht_capab tx_burst
+       json_get_values channel_list channels
+
+       [ "$auto_channel" = 0 ] && [ -z "$channel_list" ] && \
+               channel_list="$channel"
 
-       [ -n "$noscan" -a "$noscan" -gt 0 ] && hostapd_noscan=1
+       set_default noscan 0
+
+       [ "$noscan" -gt 0 ] && hostapd_noscan=1
        [ "$tx_burst" = 0 ] && tx_burst=
 
        ieee80211n=1
@@ -323,6 +333,8 @@ $base_cfg
 
 EOF
        json_select ..
+       radio_md5sum=$(md5sum $hostapd_conf_file | cut -d" " -f1)
+       echo "radio_config_id=${radio_md5sum}" >> $hostapd_conf_file
 }
 
 mac80211_hostapd_setup_bss() {
@@ -335,12 +347,15 @@ mac80211_hostapd_setup_bss() {
        append hostapd_cfg "$type=$ifname" "$N"
 
        hostapd_set_bss_options hostapd_cfg "$vif" || return 1
-       json_get_vars wds dtim_period max_listen_int start_disabled
+       json_get_vars wds wds_bridge dtim_period max_listen_int start_disabled
 
        set_default wds 0
        set_default start_disabled 0
 
-       [ "$wds" -gt 0 ] && append hostapd_cfg "wds_sta=1" "$N"
+       [ "$wds" -gt 0 ] && {
+               append hostapd_cfg "wds_sta=1" "$N"
+               [ -n "$wds_bridge" ] && append hostapd_cfg "wds_bridge=$wds_bridge" "$N"
+       }
        [ "$staidx" -gt 0 -o "$start_disabled" -eq 1 ] && append hostapd_cfg "start_disabled=1" "$N"
 
        cat >> /var/run/hostapd-$phy.conf <<EOF
@@ -355,7 +370,7 @@ mac80211_get_addr() {
        local phy="$1"
        local idx="$(($2 + 1))"
 
-       head -n $(($macidx + 1)) /sys/class/ieee80211/${phy}/addresses | tail -n1
+       head -n $idx /sys/class/ieee80211/${phy}/addresses | tail -n1
 }
 
 mac80211_generate_mac() {
@@ -388,7 +403,7 @@ mac80211_generate_mac() {
        [ "$((0x$mask1))" -gt 0 ] && {
                b1="0x$1"
                [ "$id" -gt 0 ] && \
-                       b1=$(($b1 ^ ((($id - 1) << 2) | 0x2)))
+                       b1=$(($b1 ^ ((($id - !($b1 & 2)) << 2) | 0x2)))
                printf "%02x:%s:%s:%s:%s:%s" $b1 $2 $3 $4 $5 $6
                return
        }
@@ -429,22 +444,62 @@ mac80211_iw_interface_add() {
        local type="$3"
        local wdsflag="$4"
        local rc
+       local oldifname
 
-       iw phy "$phy" interface add "$ifname" type "$type" $wdsflag
+       iw phy "$phy" interface add "$ifname" type "$type" $wdsflag >/dev/null 2>&1
        rc="$?"
 
        [ "$rc" = 233 ] && {
                # Device might have just been deleted, give the kernel some time to finish cleaning it up
                sleep 1
 
-               iw phy "$phy" interface add "$ifname" type "$type" $wdsflag
+               iw phy "$phy" interface add "$ifname" type "$type" $wdsflag >/dev/null 2>&1
                rc="$?"
        }
 
        [ "$rc" = 233 ] && {
+               # Keep matching pre-existing interface
+               [ -d "/sys/class/ieee80211/${phy}/device/net/${ifname}" ] && \
+               case "$(iw dev $ifname info | grep "^\ttype" | cut -d' ' -f2- 2>/dev/null)" in
+                       "AP")
+                               [ "$type" = "__ap" ] && rc=0
+                               ;;
+                       "IBSS")
+                               [ "$type" = "adhoc" ] && rc=0
+                               ;;
+                       "managed")
+                               [ "$type" = "managed" ] && rc=0
+                               ;;
+                       "mesh point")
+                               [ "$type" = "mp" ] && rc=0
+                               ;;
+                       "monitor")
+                               [ "$type" = "monitor" ] && rc=0
+                               ;;
+               esac
+       }
+
+       [ "$rc" = 233 ] && {
+               iw dev "$ifname" del >/dev/null 2>&1
+               [ "$?" = 0 ] && {
+                       sleep 1
+
+                       iw phy "$phy" interface add "$ifname" type "$type" $wdsflag >/dev/null 2>&1
+                       rc="$?"
+               }
+       }
+
+       [ "$rc" != 0 ] && {
                # Device might not support virtual interfaces, so the interface never got deleted in the first place.
                # Check if the interface already exists, and avoid failing in this case.
-               ip link show dev "$ifname" >/dev/null 2>/dev/null && rc=0
+               [ -d "/sys/class/ieee80211/${phy}/device/net/${ifname}" ] && rc=0
+       }
+
+       [ "$rc" != 0 ] && {
+               # Device doesn't support virtual interfaces and may have existing interface other than ifname.
+               oldifname="$(basename "/sys/class/ieee80211/${phy}/device/net"/* 2>/dev/null)"
+               [ "$oldifname" ] && ip link set "$oldifname" name "$ifname" 1>/dev/null 2>&1
+               rc="$?"
        }
 
        [ "$rc" != 0 ] && wireless_setup_failed INTERFACE_CREATION_FAILED
@@ -454,7 +509,7 @@ mac80211_iw_interface_add() {
 mac80211_prepare_vif() {
        json_select config
 
-       json_get_vars ifname mode ssid wds powersave macaddr
+       json_get_vars ifname mode ssid wds powersave macaddr enable wpa_psk_file vlan_file
 
        [ -n "$ifname" ] || ifname="wlan${phy#phy}${if_idx:+-$if_idx}"
        if_idx=$((${if_idx:-0} + 1))
@@ -472,6 +527,12 @@ mac80211_prepare_vif() {
        json_add_object data
        json_add_string ifname "$ifname"
        json_close_object
+
+       [ "$mode" == "ap" ] && {
+               [ -z "$wpa_psk_file" ] && hostapd_set_psk "$ifname"
+               [ -z "$vlan_file" ] && hostapd_set_vlan "$ifname"
+       }
+
        json_select config
 
        # It is far easier to delete and create the desired interface
@@ -490,8 +551,9 @@ mac80211_prepare_vif() {
 
                        mac80211_hostapd_setup_bss "$phy" "$ifname" "$macaddr" "$type" || return
 
+                       NEWAPLIST="${NEWAPLIST}$ifname "
                        [ -n "$hostapd_ctrl" ] || {
-                               mac80211_iw_interface_add "$phy" "$ifname" __ap || return
+                               ap_ifname="${ifname}"
                                hostapd_ctrl="${hostapd_ctrl:-/var/run/hostapd/$ifname}"
                        }
                ;;
@@ -503,9 +565,14 @@ mac80211_prepare_vif() {
                ;;
                sta)
                        local wdsflag=
-                       staidx="$(($staidx + 1))"
+                       [ "$enable" = 0 ] || staidx="$(($staidx + 1))"
                        [ "$wds" -gt 0 ] && wdsflag="4addr on"
                        mac80211_iw_interface_add "$phy" "$ifname" managed "$wdsflag" || return
+                       if [ "$wds" -gt 0 ]; then
+                               iw "$ifname" set 4addr on
+                       else
+                               iw "$ifname" set 4addr off
+                       fi
                        [ "$powersave" -gt 0 ] && powersave="on" || powersave="off"
                        iw "$ifname" set power_save "$powersave"
                ;;
@@ -513,7 +580,7 @@ mac80211_prepare_vif() {
 
        case "$mode" in
                monitor|mesh)
-                       [ "$auto_channel" -gt 0 ] || iw dev "$ifname" set channel "$channel" $htmode
+                       [ "$auto_channel" -gt 0 ] || iw dev "$ifname" set channel "$channel" $iw_htmode
                ;;
        esac
 
@@ -529,62 +596,117 @@ mac80211_prepare_vif() {
 }
 
 mac80211_setup_supplicant() {
-       wpa_supplicant_prepare_interface "$ifname" nl80211 || return 1
+       local enable=$1
+       local add_sp=0
+       local spobj="$(ubus -S list | grep wpa_supplicant.${ifname})"
+
+       [ "$enable" = 0 ] && {
+               ubus call wpa_supplicant.${phy} config_del "{\"iface\":\"$ifname\"}"
+               ip link set dev "$ifname" down
+               iw dev "$ifname" del
+               return 0
+       }
+
+       wpa_supplicant_prepare_interface "$ifname" nl80211 || {
+               iw dev "$ifname" del
+               return 1
+       }
        if [ "$mode" = "sta" ]; then
                wpa_supplicant_add_network "$ifname"
        else
                wpa_supplicant_add_network "$ifname" "$freq" "$htmode" "$noscan"
        fi
-       wpa_supplicant_run "$ifname" ${hostapd_ctrl:+-H $hostapd_ctrl}
+
+       NEWSPLIST="${NEWSPLIST}$ifname "
+
+       if [ "${NEWAPLIST%% *}" != "${OLDAPLIST%% *}" ]; then
+               [ "$spobj" ] && ubus call wpa_supplicant config_remove "{\"iface\":\"$ifname\"}"
+               add_sp=1
+       fi
+       [ -z "$spobj" ] && add_sp=1
+
+       NEW_MD5_SP=$(test -e "${_config}" && md5sum ${_config})
+       OLD_MD5_SP=$(uci -q -P /var/state get wireless._${phy}.md5_${ifname})
+       if [ "$add_sp" = "1" ]; then
+               wpa_supplicant_run "$ifname" "$hostapd_ctrl"
+       else
+               [ "${NEW_MD5_SP}" == "${OLD_MD5_SP}" ] || ubus call $spobj reload
+       fi
+       uci -q -P /var/state set wireless._${phy}.md5_${ifname}="${NEW_MD5_SP}"
+       return 0
 }
 
 mac80211_setup_supplicant_noctl() {
-       wpa_supplicant_prepare_interface "$ifname" nl80211 || return 1
+       local enable=$1
+       local spobj="$(ubus -S list | grep wpa_supplicant.${ifname})"
+       wpa_supplicant_prepare_interface "$ifname" nl80211 || {
+               iw dev "$ifname" del
+               return 1
+       }
+
        wpa_supplicant_add_network "$ifname" "$freq" "$htmode" "$noscan"
-       wpa_supplicant_run "$ifname"
+
+       NEWSPLIST="${NEWSPLIST}$ifname "
+       [ "$enable" = 0 ] && {
+               ubus call wpa_supplicant config_remove "{\"iface\":\"$ifname\"}"
+               ip link set dev "$ifname" down
+               return 0
+       }
+       if [ -z "$spobj" ]; then
+               wpa_supplicant_run "$ifname"
+       else
+               ubus call $spobj reload
+       fi
 }
 
-mac80211_setup_adhoc_htmode() {
+mac80211_prepare_iw_htmode() {
        case "$htmode" in
-               VHT20|HT20) ibss_htmode=HT20;;
+               VHT20|HT20) iw_htmode=HT20;;
                HT40*|VHT40|VHT160)
                        case "$hwmode" in
                                a)
                                        case "$(( ($channel / 4) % 2 ))" in
-                                               1) ibss_htmode="HT40+" ;;
-                                               0) ibss_htmode="HT40-";;
+                                               1) iw_htmode="HT40+" ;;
+                                               0) iw_htmode="HT40-";;
                                        esac
                                ;;
                                *)
                                        case "$htmode" in
-                                               HT40+) ibss_htmode="HT40+";;
-                                               HT40-) ibss_htmode="HT40-";;
+                                               HT40+) iw_htmode="HT40+";;
+                                               HT40-) iw_htmode="HT40-";;
                                                *)
                                                        if [ "$channel" -lt 7 ]; then
-                                                               ibss_htmode="HT40+"
+                                                               iw_htmode="HT40+"
                                                        else
-                                                               ibss_htmode="HT40-"
+                                                               iw_htmode="HT40-"
                                                        fi
                                                ;;
                                        esac
                                ;;
                        esac
-                       [ "$auto_channel" -gt 0 ] && ibss_htmode="HT40+"
+                       [ "$auto_channel" -gt 0 ] && iw_htmode="HT40+"
                ;;
                VHT80)
-                       ibss_htmode="80MHZ"
+                       iw_htmode="80MHZ"
                ;;
                NONE|NOHT)
-                       ibss_htmode="NOHT"
+                       iw_htmode="NOHT"
                ;;
-               *) ibss_htmode="" ;;
+               *) iw_htmode="" ;;
        esac
-
 }
 
 mac80211_setup_adhoc() {
+       local enable=$1
        json_get_vars bssid ssid key mcast_rate
 
+       NEWUMLIST="${NEWUMLIST}$ifname "
+
+       [ "$enable" = 0 ] && {
+               ip link set dev "$ifname" down
+               return 0
+       }
+
        keyspec=
        [ "$auth_type" = "wep" ] && {
                set_default key 1
@@ -615,7 +737,7 @@ mac80211_setup_adhoc() {
        mcval=
        [ -n "$mcast_rate" ] && wpa_supplicant_add_rate mcval "$mcast_rate"
 
-       iw dev "$ifname" ibss join "$ssid" $freq $ibss_htmode fixed-freq $bssid \
+       iw dev "$ifname" ibss join "$ssid" $freq $iw_htmode fixed-freq $bssid \
                beacon-interval $beacon_int \
                ${brstr:+basic-rates $brstr} \
                ${mcval:+mcast-rate $mcval} \
@@ -623,46 +745,21 @@ mac80211_setup_adhoc() {
 }
 
 mac80211_setup_mesh() {
+       local enable=$1
        json_get_vars ssid mesh_id mcast_rate
 
+       NEWUMLIST="${NEWUMLIST}$ifname "
+
+       [ "$enable" = 0 ] && {
+               ip link set dev "$ifname" down
+               return 0
+       }
+
        mcval=
        [ -n "$mcast_rate" ] && wpa_supplicant_add_rate mcval "$mcast_rate"
        [ -n "$mesh_id" ] && ssid="$mesh_id"
 
-       case "$htmode" in
-               VHT20|HT20) mesh_htmode=HT20;;
-               HT40*|VHT40)
-                       case "$hwmode" in
-                               a)
-                                       case "$(( ($channel / 4) % 2 ))" in
-                                               1) mesh_htmode="HT40+" ;;
-                                               0) mesh_htmode="HT40-";;
-                                       esac
-                               ;;
-                               *)
-                                       case "$htmode" in
-                                               HT40+) mesh_htmode="HT40+";;
-                                               HT40-) mesh_htmode="HT40-";;
-                                               *)
-                                                       if [ "$channel" -lt 7 ]; then
-                                                               mesh_htmode="HT40+"
-                                                       else
-                                                               mesh_htmode="HT40-"
-                                                       fi
-                                               ;;
-                                       esac
-                               ;;
-                       esac
-               ;;
-               VHT80)
-                       mesh_htmode="80Mhz"
-               ;;
-               VHT160)
-                       mesh_htmode="160Mhz"
-               ;;
-               *) mesh_htmode="NOHT" ;;
-       esac
-       iw dev "$ifname" mesh join "$ssid" freq $freq $mesh_htmode \
+       iw dev "$ifname" mesh join "$ssid" freq $freq $iw_htmode \
                ${mcval:+mcast-rate $mcval} \
                beacon-interval $beacon_int
 }
@@ -670,6 +767,7 @@ mac80211_setup_mesh() {
 mac80211_setup_vif() {
        local name="$1"
        local failed
+       local action=up
 
        json_select data
        json_get_vars ifname
@@ -677,25 +775,28 @@ mac80211_setup_vif() {
 
        json_select config
        json_get_vars mode
-       json_get_var vif_txpower txpower
-
-       ip link set dev "$ifname" up || {
-               wireless_setup_vif_failed IFUP_ERROR
-               json_select ..
-               return
-       }
-
-       set_default vif_txpower "$txpower"
-       [ -z "$vif_txpower" ] || iw dev "$ifname" set txpower fixed "${vif_txpower%%.*}00"
+       json_get_var vif_txpower
+       json_get_var vif_enable enable 1
+
+       [ "$vif_enable" = 1 ] || action=down
+       if [ "$mode" != "ap" ] || [ "$ifname" = "$ap_ifname" ]; then
+               ip link set dev "$ifname" "$action" || {
+                       wireless_setup_vif_failed IFUP_ERROR
+                       json_select ..
+                       return
+               }
+               [ -z "$vif_txpower" ] || iw dev "$ifname" set txpower fixed "${vif_txpower%%.*}00"
+       fi
 
        case "$mode" in
                mesh)
                        wireless_vif_parse_encryption
+                       [ -z "$htmode" ] && htmode="NOHT";
                        freq="$(get_freq "$phy" "$channel")"
                        if [ "$wpa" -gt 0 -o "$auto_channel" -gt 0 ] || chan_is_dfs "$phy" "$channel"; then
-                               mac80211_setup_supplicant || failed=1
+                               mac80211_setup_supplicant $vif_enable || failed=1
                        else
-                               mac80211_setup_mesh
+                               mac80211_setup_mesh $vif_enable
                        fi
                        for var in $MP_CONFIG_INT $MP_CONFIG_BOOL $MP_CONFIG_STRING; do
                                json_get_var mp_val "$var"
@@ -704,16 +805,15 @@ mac80211_setup_vif() {
                ;;
                adhoc)
                        wireless_vif_parse_encryption
-                       mac80211_setup_adhoc_htmode
                        if [ "$wpa" -gt 0 -o "$auto_channel" -gt 0 ]; then
                                freq="$(get_freq "$phy" "$channel")"
-                               mac80211_setup_supplicant_noctl || failed=1
+                               mac80211_setup_supplicant_noctl $vif_enable || failed=1
                        else
-                               mac80211_setup_adhoc
+                               mac80211_setup_adhoc $vif_enable
                        fi
                ;;
                sta)
-                       mac80211_setup_supplicant || failed=1
+                       mac80211_setup_supplicant $vif_enable || failed=1
                ;;
        esac
 
@@ -734,18 +834,27 @@ chan_is_dfs() {
        return $!
 }
 
-mac80211_interface_cleanup() {
-       local phy="$1"
+mac80211_vap_cleanup() {
+       local service="$1"
+       local vaps="$2"
 
-       for wdev in $(list_phy_interfaces "$phy"); do
-               local wdev_phy="$(readlink /sys/class/net/${wdev}/phy80211)"
-               wdev_phy="$(basename "$wdev_phy")"
-               [ -n "$wdev_phy" -a "$wdev_phy" != "$phy" ] && continue
+       for wdev in $vaps; do
+               [ "$service" != "none" ] && ubus call ${service} config_remove "{\"iface\":\"$wdev\"}"
                ip link set dev "$wdev" down 2>/dev/null
                iw dev "$wdev" del
        done
 }
 
+mac80211_interface_cleanup() {
+       local phy="$1"
+       local primary_ap=$(uci -q -P /var/state get wireless._${phy}.aplist)
+       primary_ap=${primary_ap%% *}
+
+       mac80211_vap_cleanup hostapd "${primary_ap}"
+       mac80211_vap_cleanup wpa_supplicant "$(uci -q -P /var/state get wireless._${phy}.splist)"
+       mac80211_vap_cleanup none "$(uci -q -P /var/state get wireless._${phy}.umlist)"
+}
+
 mac80211_set_noscan() {
        hostapd_noscan=1
 }
@@ -771,8 +880,32 @@ drv_mac80211_setup() {
                return 1
        }
 
-       wireless_set_data phy="$phy"
-       mac80211_interface_cleanup "$phy"
+       [ -z "$(uci -q -P /var/state show wireless._${phy})" ] && {
+               uci -q -P /var/state set wireless._${phy}=phy
+               wireless_set_data phy="$phy"
+       }
+
+       OLDAPLIST=$(uci -q -P /var/state get wireless._${phy}.aplist)
+       OLDSPLIST=$(uci -q -P /var/state get wireless._${phy}.splist)
+       OLDUMLIST=$(uci -q -P /var/state get wireless._${phy}.umlist)
+
+       local wdev
+       local cwdev
+       local found
+
+       for wdev in $(list_phy_interfaces "$phy"); do
+               found=0
+               for cwdev in $OLDAPLIST $OLDSPLIST $OLDUMLIST; do
+                       if [ "$wdev" = "$cwdev" ]; then
+                               found=1
+                               break
+                       fi
+               done
+               if [ "$found" = "0" ]; then
+                       ip link set dev "$wdev" down
+                       iw dev "$wdev" del
+               fi
+       done
 
        # convert channel to frequency
        [ "$auto_channel" -gt 0 ] || freq="$(get_freq "$phy" "$channel")"
@@ -791,7 +924,7 @@ drv_mac80211_setup() {
        staidx=0
 
        [ -n "$chanbw" ] && {
-               for file in /sys/kernel/debug/ieee80211/$phy/ath9k/chanbw /sys/kernel/debug/ieee80211/$phy/ath5k/bwmode; do
+               for file in /sys/kernel/debug/ieee80211/$phy/ath9k*/chanbw /sys/kernel/debug/ieee80211/$phy/ath5k/bwmode; do
                        [ -f "$file" ] && echo "$chanbw" > "$file"
                done
        }
@@ -805,14 +938,21 @@ drv_mac80211_setup() {
        [ "$rxantenna" = "all" ] && rxantenna=0xffffffff
 
        iw phy "$phy" set antenna $txantenna $rxantenna >/dev/null 2>&1
-       iw phy "$phy" set antenna_gain $antenna_gain
-       iw phy "$phy" set distance "$distance"
+       iw phy "$phy" set antenna_gain $antenna_gain >/dev/null 2>&1
+       iw phy "$phy" set distance "$distance" >/dev/null 2>&1
+
+       if [ -n "$txpower" ]; then
+               iw phy "$phy" set txpower fixed "${txpower%%.*}00"
+       else
+               iw phy "$phy" set txpower auto
+       fi
 
        [ -n "$frag" ] && iw phy "$phy" set frag "${frag%%.*}"
        [ -n "$rts" ] && iw phy "$phy" set rts "${rts%%.*}"
 
        has_ap=
        hostapd_ctrl=
+       ap_ifname=
        hostapd_noscan=
        for_each_interface "ap" mac80211_check_ap
 
@@ -821,25 +961,75 @@ drv_mac80211_setup() {
        for_each_interface "sta adhoc mesh" mac80211_set_noscan
        [ -n "$has_ap" ] && mac80211_hostapd_setup_base "$phy"
 
+       mac80211_prepare_iw_htmode
        for_each_interface "sta adhoc mesh monitor" mac80211_prepare_vif
+       NEWAPLIST=
        for_each_interface "ap" mac80211_prepare_vif
-
+       NEW_MD5=$(test -e "${hostapd_conf_file}" && md5sum ${hostapd_conf_file})
+       OLD_MD5=$(uci -q -P /var/state get wireless._${phy}.md5)
+       if [ "${NEWAPLIST}" != "${OLDAPLIST}" ]; then
+               mac80211_vap_cleanup hostapd "${OLDAPLIST}"
+       fi
+       [ -n "${NEWAPLIST}" ] && mac80211_iw_interface_add "$phy" "${NEWAPLIST%% *}" __ap
+       local add_ap=0
+       local primary_ap=${NEWAPLIST%% *}
        [ -n "$hostapd_ctrl" ] && {
-               /usr/sbin/hostapd -s -P /var/run/wifi-$phy.pid -B "$hostapd_conf_file"
+               local no_reload=1
+               if [ -n "$(ubus list | grep hostapd.$primary_ap)" ]; then
+                       [ "${NEW_MD5}" = "${OLD_MD5}" ] || {
+                               ubus call hostapd.$primary_ap reload
+                               no_reload=$?
+                               if [ "$no_reload" != "0" ]; then
+                                       mac80211_vap_cleanup hostapd "${OLDAPLIST}"
+                                       mac80211_vap_cleanup wpa_supplicant "$(uci -q -P /var/state get wireless._${phy}.splist)"
+                                       mac80211_vap_cleanup none "$(uci -q -P /var/state get wireless._${phy}.umlist)"
+                                       sleep 2
+                                       mac80211_iw_interface_add "$phy" "${NEWAPLIST%% *}" __ap
+                                       for_each_interface "sta adhoc mesh monitor" mac80211_prepare_vif
+                               fi
+                       }
+               fi
+               if [ "$no_reload" != "0" ]; then
+                       add_ap=1
+                       ubus wait_for hostapd
+                       ubus call hostapd config_add "{\"iface\":\"$primary_ap\", \"config\":\"${hostapd_conf_file}\"}"
+                       local hostapd_pid=$(ubus call service list '{"name": "hostapd"}' | jsonfilter -l 1 -e "@['hostapd'].instances['hostapd'].pid")
+                       wireless_add_process "$hostapd_pid" "/usr/sbin/hostapd" 1
+               fi
                ret="$?"
-               wireless_add_process "$(cat /var/run/wifi-$phy.pid)" "/usr/sbin/hostapd" 1
                [ "$ret" != 0 ] && {
                        wireless_setup_failed HOSTAPD_START_FAILED
                        return
                }
        }
+       uci -q -P /var/state set wireless._${phy}.aplist="${NEWAPLIST}"
+       uci -q -P /var/state set wireless._${phy}.md5="${NEW_MD5}"
+
+       [ "${add_ap}" = 1 ] && sleep 1
+       for_each_interface "ap" mac80211_setup_vif
+
+       NEWSPLIST=
+       NEWUMLIST=
 
-       for_each_interface "ap sta adhoc mesh monitor" mac80211_setup_vif
+       for_each_interface "sta adhoc mesh monitor" mac80211_setup_vif
 
+       uci -q -P /var/state set wireless._${phy}.splist="${NEWSPLIST}"
+       uci -q -P /var/state set wireless._${phy}.umlist="${NEWUMLIST}"
+
+       local foundvap
+       local dropvap=""
+       for oldvap in $OLDSPLIST; do
+               foundvap=0
+               for newvap in $NEWSPLIST; do
+                       [ "$oldvap" = "$newvap" ] && foundvap=1
+               done
+               [ "$foundvap" = "0" ] && dropvap="$dropvap $oldvap"
+       done
+       [ -n "$dropvap" ] && mac80211_vap_cleanup wpa_supplicant "$dropvap"
        wireless_set_up
 }
 
-list_phy_interfaces() {
+_list_phy_interfaces() {
        local phy="$1"
        if [ -d "/sys/class/ieee80211/${phy}/device/net" ]; then
                ls "/sys/class/ieee80211/${phy}/device/net" 2>/dev/null;
@@ -848,6 +1038,15 @@ list_phy_interfaces() {
        fi
 }
 
+list_phy_interfaces() {
+       local phy="$1"
+
+       for dev in $(_list_phy_interfaces "$phy"); do
+               readlink "/sys/class/net/${dev}/phy80211" | grep -q "/${phy}\$" || continue
+               echo "$dev"
+       done
+}
+
 drv_mac80211_teardown() {
        wireless_process_kill_all
 
@@ -856,6 +1055,7 @@ drv_mac80211_teardown() {
        json_select ..
 
        mac80211_interface_cleanup "$phy"
+       uci -q -P /var/state revert wireless._${phy}
 }
 
 add_driver mac80211