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mac80211.sh
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mac80211.sh
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#!/bin/sh
. /lib/netifd/netifd-wireless.sh
. /lib/netifd/hostapd.sh
init_wireless_driver "$@"
MP_CONFIG_INT="mesh_retry_timeout mesh_confirm_timeout mesh_holding_timeout mesh_max_peer_links
mesh_max_retries mesh_ttl mesh_element_ttl mesh_hwmp_max_preq_retries
mesh_path_refresh_time mesh_min_discovery_timeout mesh_hwmp_active_path_timeout
mesh_hwmp_preq_min_interval mesh_hwmp_net_diameter_traversal_time mesh_hwmp_rootmode
mesh_hwmp_rann_interval mesh_gate_announcements mesh_sync_offset_max_neighor
mesh_rssi_threshold mesh_hwmp_active_path_to_root_timeout mesh_hwmp_root_interval
mesh_hwmp_confirmation_interval mesh_awake_window mesh_plink_timeout"
MP_CONFIG_BOOL="mesh_auto_open_plinks mesh_fwding"
MP_CONFIG_STRING="mesh_power_mode"
NEWAPLIST=
OLDAPLIST=
NEWSPLIST=
OLDSPLIST=
NEWUMLIST=
OLDUMLIST=
drv_mac80211_init_device_config() {
hostapd_common_add_device_config
config_add_string path phy 'macaddr:macaddr'
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 min_tx_power
config_add_boolean noscan ht_coex acs_exclude_dfs background_radar
config_add_array ht_capab
config_add_array channels
config_add_array scan_list
config_add_boolean \
rxldpc \
short_gi_80 \
short_gi_160 \
tx_stbc_2by1 \
su_beamformer \
su_beamformee \
mu_beamformer \
mu_beamformee \
he_su_beamformer \
he_su_beamformee \
he_mu_beamformer \
vht_txop_ps \
htc_vht \
rx_antenna_pattern \
tx_antenna_pattern \
he_spr_sr_control \
he_twt_required
config_add_int \
beamformer_antennas \
beamformee_antennas \
vht_max_a_mpdu_len_exp \
vht_max_mpdu \
vht_link_adapt \
vht160 \
rx_stbc \
tx_stbc \
he_bss_color \
he_spr_non_srg_obss_pd_max_offset
config_add_boolean \
ldpc \
greenfield \
short_gi_20 \
short_gi_40 \
max_amsdu \
dsss_cck_40
}
drv_mac80211_init_iface_config() {
hostapd_common_add_bss_config
config_add_string 'macaddr:macaddr' ifname
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
config_add_int start_disabled
# mesh
config_add_string mesh_id
config_add_int $MP_CONFIG_INT
config_add_boolean $MP_CONFIG_BOOL
config_add_string $MP_CONFIG_STRING
}
mac80211_add_capabilities() {
local __var="$1"; shift
local __mask="$1"; shift
local __out= oifs
oifs="$IFS"
IFS=:
for capab in "$@"; do
set -- $capab
[ "$(($4))" -gt 0 ] || continue
[ "$(($__mask & $2))" -eq "$((${3:-$2}))" ] || continue
__out="$__out[$1]"
done
IFS="$oifs"
export -n -- "$__var=$__out"
}
mac80211_add_he_capabilities() {
local __out= oifs
oifs="$IFS"
IFS=:
for capab in "$@"; do
set -- $capab
[ "$(($4))" -gt 0 ] || continue
[ "$(((0x$2) & $3))" -gt 0 ] || {
eval "$1=0"
continue
}
append base_cfg "$1=1" "$N"
done
IFS="$oifs"
}
mac80211_hostapd_setup_base() {
local phy="$1"
json_select config
[ "$auto_channel" -gt 0 ] && channel=acs_survey
[ "$auto_channel" -gt 0 ] && json_get_vars acs_exclude_dfs
[ -n "$acs_exclude_dfs" ] && [ "$acs_exclude_dfs" -gt 0 ] &&
append base_cfg "acs_exclude_dfs=1" "$N"
json_get_vars noscan ht_coex min_tx_power:0
json_get_values ht_capab_list ht_capab tx_burst
json_get_values channel_list channels
[ "$auto_channel" = 0 ] && [ -z "$channel_list" ] && \
channel_list="$channel"
[ "$min_tx_power" -gt 0 ] && append base_cfg "min_tx_power=$min_tx_power"
set_default noscan 0
[ "$noscan" -gt 0 ] && hostapd_noscan=1
[ "$tx_burst" = 0 ] && tx_burst=
chan_ofs=0
[ "$band" = "6g" ] && chan_ofs=1
ieee80211n=1
ht_capab=
case "$htmode" in
VHT20|HT20|HE20) ;;
HT40*|VHT40|VHT80|VHT160|HE40|HE80|HE160)
case "$hwmode" in
a)
case "$(( (($channel / 4) + $chan_ofs) % 2 ))" in
1) ht_capab="[HT40+]";;
0) ht_capab="[HT40-]";;
esac
;;
*)
case "$htmode" in
HT40+) ht_capab="[HT40+]";;
HT40-) ht_capab="[HT40-]";;
*)
if [ "$channel" -lt 7 ]; then
ht_capab="[HT40+]"
else
ht_capab="[HT40-]"
fi
;;
esac
;;
esac
[ "$auto_channel" -gt 0 ] && ht_capab="[HT40+]"
;;
*) ieee80211n= ;;
esac
[ -n "$ieee80211n" ] && {
append base_cfg "ieee80211n=1" "$N"
set_default ht_coex 0
append base_cfg "ht_coex=$ht_coex" "$N"
json_get_vars \
ldpc:1 \
greenfield:0 \
short_gi_20:1 \
short_gi_40:1 \
tx_stbc:1 \
rx_stbc:3 \
max_amsdu:1 \
dsss_cck_40:1
ht_cap_mask=0
for cap in $(iw phy "$phy" info | grep 'Capabilities:' | cut -d: -f2); do
ht_cap_mask="$(($ht_cap_mask | $cap))"
done
cap_rx_stbc=$((($ht_cap_mask >> 8) & 3))
[ "$rx_stbc" -lt "$cap_rx_stbc" ] && cap_rx_stbc="$rx_stbc"
ht_cap_mask="$(( ($ht_cap_mask & ~(0x300)) | ($cap_rx_stbc << 8) ))"
mac80211_add_capabilities ht_capab_flags $ht_cap_mask \
LDPC:0x1::$ldpc \
GF:0x10::$greenfield \
SHORT-GI-20:0x20::$short_gi_20 \
SHORT-GI-40:0x40::$short_gi_40 \
TX-STBC:0x80::$tx_stbc \
RX-STBC1:0x300:0x100:1 \
RX-STBC12:0x300:0x200:1 \
RX-STBC123:0x300:0x300:1 \
MAX-AMSDU-7935:0x800::$max_amsdu \
DSSS_CCK-40:0x1000::$dsss_cck_40
ht_capab="$ht_capab$ht_capab_flags"
[ -n "$ht_capab" ] && append base_cfg "ht_capab=$ht_capab" "$N"
}
# 802.11ac
enable_ac=0
vht_oper_chwidth=0
vht_center_seg0=
idx="$channel"
case "$htmode" in
VHT20|HE20) enable_ac=1;;
VHT40|HE40)
case "$(( (($channel / 4) + $chan_ofs) % 2 ))" in
1) idx=$(($channel + 2));;
0) idx=$(($channel - 2));;
esac
enable_ac=1
vht_center_seg0=$idx
;;
VHT80|HE80)
case "$(( (($channel / 4) + $chan_ofs) % 4 ))" in
1) idx=$(($channel + 6));;
2) idx=$(($channel + 2));;
3) idx=$(($channel - 2));;
0) idx=$(($channel - 6));;
esac
enable_ac=1
vht_oper_chwidth=1
vht_center_seg0=$idx
;;
VHT160|HE160)
if [ "$band" = "6g" ]; then
case "$channel" in
1|5|9|13|17|21|25|29) idx=15;;
33|37|41|45|49|53|57|61) idx=47;;
65|69|73|77|81|85|89|93) idx=79;;
97|101|105|109|113|117|121|125) idx=111;;
129|133|137|141|145|149|153|157) idx=143;;
161|165|169|173|177|181|185|189) idx=175;;
193|197|201|205|209|213|217|221) idx=207;;
esac
else
case "$channel" in
36|40|44|48|52|56|60|64) idx=50;;
100|104|108|112|116|120|124|128) idx=114;;
esac
fi
enable_ac=1
vht_oper_chwidth=2
vht_center_seg0=$idx
;;
esac
[ "$band" = "5g" ] && {
json_get_vars background_radar:0
[ "$background_radar" -eq 1 ] && append base_cfg "enable_background_radar=1" "$N"
}
[ "$band" = "6g" ] && {
op_class=
case "$htmode" in
HE20) op_class=131;;
HE*) op_class=$((132 + $vht_oper_chwidth))
esac
[ -n "$op_class" ] && append base_cfg "op_class=$op_class" "$N"
}
[ "$hwmode" = "a" ] || enable_ac=0
if [ "$enable_ac" != "0" ]; then
json_get_vars \
rxldpc:1 \
short_gi_80:1 \
short_gi_160:1 \
tx_stbc_2by1:1 \
su_beamformer:1 \
su_beamformee:1 \
mu_beamformer:1 \
mu_beamformee:1 \
vht_txop_ps:1 \
htc_vht:1 \
beamformee_antennas:4 \
beamformer_antennas:4 \
rx_antenna_pattern:1 \
tx_antenna_pattern:1 \
vht_max_a_mpdu_len_exp:7 \
vht_max_mpdu:11454 \
rx_stbc:4 \
vht_link_adapt:3 \
vht160:2
set_default tx_burst 2.0
append base_cfg "ieee80211ac=1" "$N"
vht_cap=0
for cap in $(iw phy "$phy" info | awk -F "[()]" '/VHT Capabilities/ { print $2 }'); do
vht_cap="$(($vht_cap | $cap))"
done
append base_cfg "vht_oper_chwidth=$vht_oper_chwidth" "$N"
append base_cfg "vht_oper_centr_freq_seg0_idx=$vht_center_seg0" "$N"
cap_rx_stbc=$((($vht_cap >> 8) & 7))
[ "$rx_stbc" -lt "$cap_rx_stbc" ] && cap_rx_stbc="$rx_stbc"
vht_cap="$(( ($vht_cap & ~(0x700)) | ($cap_rx_stbc << 8) ))"
mac80211_add_capabilities vht_capab $vht_cap \
RXLDPC:0x10::$rxldpc \
SHORT-GI-80:0x20::$short_gi_80 \
SHORT-GI-160:0x40::$short_gi_160 \
TX-STBC-2BY1:0x80::$tx_stbc_2by1 \
SU-BEAMFORMER:0x800::$su_beamformer \
SU-BEAMFORMEE:0x1000::$su_beamformee \
MU-BEAMFORMER:0x80000::$mu_beamformer \
MU-BEAMFORMEE:0x100000::$mu_beamformee \
VHT-TXOP-PS:0x200000::$vht_txop_ps \
HTC-VHT:0x400000::$htc_vht \
RX-ANTENNA-PATTERN:0x10000000::$rx_antenna_pattern \
TX-ANTENNA-PATTERN:0x20000000::$tx_antenna_pattern \
RX-STBC-1:0x700:0x100:1 \
RX-STBC-12:0x700:0x200:1 \
RX-STBC-123:0x700:0x300:1 \
RX-STBC-1234:0x700:0x400:1 \
[ "$(($vht_cap & 0x800))" -gt 0 -a "$su_beamformer" -gt 0 ] && {
cap_ant="$(( ( ($vht_cap >> 16) & 3 ) + 1 ))"
[ "$cap_ant" -gt "$beamformer_antennas" ] && cap_ant="$beamformer_antennas"
[ "$cap_ant" -gt 1 ] && vht_capab="$vht_capab[SOUNDING-DIMENSION-$cap_ant]"
}
[ "$(($vht_cap & 0x1000))" -gt 0 -a "$su_beamformee" -gt 0 ] && {
cap_ant="$(( ( ($vht_cap >> 13) & 3 ) + 1 ))"
[ "$cap_ant" -gt "$beamformee_antennas" ] && cap_ant="$beamformee_antennas"
[ "$cap_ant" -gt 1 ] && vht_capab="$vht_capab[BF-ANTENNA-$cap_ant]"
}
# supported Channel widths
vht160_hw=0
[ "$(($vht_cap & 12))" -eq 4 -a 1 -le "$vht160" ] && \
vht160_hw=1
[ "$(($vht_cap & 12))" -eq 8 -a 2 -le "$vht160" ] && \
vht160_hw=2
[ "$vht160_hw" = 1 ] && vht_capab="$vht_capab[VHT160]"
[ "$vht160_hw" = 2 ] && vht_capab="$vht_capab[VHT160-80PLUS80]"
# maximum MPDU length
vht_max_mpdu_hw=3895
[ "$(($vht_cap & 3))" -ge 1 -a 7991 -le "$vht_max_mpdu" ] && \
vht_max_mpdu_hw=7991
[ "$(($vht_cap & 3))" -ge 2 -a 11454 -le "$vht_max_mpdu" ] && \
vht_max_mpdu_hw=11454
[ "$vht_max_mpdu_hw" != 3895 ] && \
vht_capab="$vht_capab[MAX-MPDU-$vht_max_mpdu_hw]"
# maximum A-MPDU length exponent
vht_max_a_mpdu_len_exp_hw=0
[ "$(($vht_cap & 58720256))" -ge 8388608 -a 1 -le "$vht_max_a_mpdu_len_exp" ] && \
vht_max_a_mpdu_len_exp_hw=1
[ "$(($vht_cap & 58720256))" -ge 16777216 -a 2 -le "$vht_max_a_mpdu_len_exp" ] && \
vht_max_a_mpdu_len_exp_hw=2
[ "$(($vht_cap & 58720256))" -ge 25165824 -a 3 -le "$vht_max_a_mpdu_len_exp" ] && \
vht_max_a_mpdu_len_exp_hw=3
[ "$(($vht_cap & 58720256))" -ge 33554432 -a 4 -le "$vht_max_a_mpdu_len_exp" ] && \
vht_max_a_mpdu_len_exp_hw=4
[ "$(($vht_cap & 58720256))" -ge 41943040 -a 5 -le "$vht_max_a_mpdu_len_exp" ] && \
vht_max_a_mpdu_len_exp_hw=5
[ "$(($vht_cap & 58720256))" -ge 50331648 -a 6 -le "$vht_max_a_mpdu_len_exp" ] && \
vht_max_a_mpdu_len_exp_hw=6
[ "$(($vht_cap & 58720256))" -ge 58720256 -a 7 -le "$vht_max_a_mpdu_len_exp" ] && \
vht_max_a_mpdu_len_exp_hw=7
vht_capab="$vht_capab[MAX-A-MPDU-LEN-EXP$vht_max_a_mpdu_len_exp_hw]"
# whether or not the STA supports link adaptation using VHT variant
vht_link_adapt_hw=0
[ "$(($vht_cap & 201326592))" -ge 134217728 -a 2 -le "$vht_link_adapt" ] && \
vht_link_adapt_hw=2
[ "$(($vht_cap & 201326592))" -ge 201326592 -a 3 -le "$vht_link_adapt" ] && \
vht_link_adapt_hw=3
[ "$vht_link_adapt_hw" != 0 ] && \
vht_capab="$vht_capab[VHT-LINK-ADAPT-$vht_link_adapt_hw]"
[ -n "$vht_capab" ] && append base_cfg "vht_capab=$vht_capab" "$N"
fi
# 802.11ax
enable_ax=0
case "$htmode" in
HE*) enable_ax=1 ;;
esac
if [ "$enable_ax" != "0" ]; then
json_get_vars \
he_su_beamformer:1 \
he_su_beamformee:0 \
he_mu_beamformer:1 \
he_twt_required:0 \
he_spr_sr_control:0 \
he_spr_non_srg_obss_pd_max_offset:1 \
he_bss_color
he_phy_cap=$(iw phy "$phy" info | awk -F "[()]" '/HE PHY Capabilities/ { print $2 }' | head -1)
he_phy_cap=${he_phy_cap:2}
he_mac_cap=$(iw phy "$phy" info | awk -F "[()]" '/HE MAC Capabilities/ { print $2 }' | head -1)
he_mac_cap=${he_mac_cap:2}
append base_cfg "ieee80211ax=1" "$N"
[ "$hwmode" = "a" ] && {
append base_cfg "he_oper_chwidth=$vht_oper_chwidth" "$N"
append base_cfg "he_oper_centr_freq_seg0_idx=$vht_center_seg0" "$N"
}
set_default he_bss_color 128
append base_cfg "he_bss_color=$he_bss_color" "$N"
mac80211_add_he_capabilities \
he_su_beamformer:${he_phy_cap:6:2}:0x80:$he_su_beamformer \
he_su_beamformee:${he_phy_cap:8:2}:0x1:$he_su_beamformee \
he_mu_beamformer:${he_phy_cap:8:2}:0x2:$he_mu_beamformer \
he_spr_sr_control:${he_phy_cap:14:2}:0x1:$he_spr_sr_control \
he_twt_required:${he_mac_cap:0:2}:0x6:$he_twt_required
[ "$he_spr_sr_control" -gt 0 ] && append base_cfg "he_spr_non_srg_obss_pd_max_offset=$he_spr_non_srg_obss_pd_max_offset" "$N"
append base_cfg "he_default_pe_duration=4" "$N"
append base_cfg "he_rts_threshold=1023" "$N"
append base_cfg "he_mu_edca_qos_info_param_count=0" "$N"
append base_cfg "he_mu_edca_qos_info_q_ack=0" "$N"
append base_cfg "he_mu_edca_qos_info_queue_request=0" "$N"
append base_cfg "he_mu_edca_qos_info_txop_request=0" "$N"
append base_cfg "he_mu_edca_ac_be_aifsn=8" "$N"
append base_cfg "he_mu_edca_ac_be_aci=0" "$N"
append base_cfg "he_mu_edca_ac_be_ecwmin=9" "$N"
append base_cfg "he_mu_edca_ac_be_ecwmax=10" "$N"
append base_cfg "he_mu_edca_ac_be_timer=255" "$N"
append base_cfg "he_mu_edca_ac_bk_aifsn=15" "$N"
append base_cfg "he_mu_edca_ac_bk_aci=1" "$N"
append base_cfg "he_mu_edca_ac_bk_ecwmin=9" "$N"
append base_cfg "he_mu_edca_ac_bk_ecwmax=10" "$N"
append base_cfg "he_mu_edca_ac_bk_timer=255" "$N"
append base_cfg "he_mu_edca_ac_vi_ecwmin=5" "$N"
append base_cfg "he_mu_edca_ac_vi_ecwmax=7" "$N"
append base_cfg "he_mu_edca_ac_vi_aifsn=5" "$N"
append base_cfg "he_mu_edca_ac_vi_aci=2" "$N"
append base_cfg "he_mu_edca_ac_vi_timer=255" "$N"
append base_cfg "he_mu_edca_ac_vo_aifsn=5" "$N"
append base_cfg "he_mu_edca_ac_vo_aci=3" "$N"
append base_cfg "he_mu_edca_ac_vo_ecwmin=5" "$N"
append base_cfg "he_mu_edca_ac_vo_ecwmax=7" "$N"
append base_cfg "he_mu_edca_ac_vo_timer=255" "$N"
fi
hostapd_prepare_device_config "$hostapd_conf_file" nl80211
cat >> "$hostapd_conf_file" <<EOF
${channel:+channel=$channel}
${channel_list:+chanlist=$channel_list}
${hostapd_noscan:+noscan=1}
${tx_burst:+tx_queue_data2_burst=$tx_burst}
$base_cfg
EOF
json_select ..
radio_md5sum=$(md5sum $hostapd_conf_file | cut -d" " -f1)
echo "radio_config_id=${radio_md5sum}" >> $hostapd_conf_file
}
mac80211_hostapd_setup_bss() {
local phy="$1"
local ifname="$2"
local macaddr="$3"
local type="$4"
hostapd_cfg=
append hostapd_cfg "$type=$ifname" "$N"
hostapd_set_bss_options hostapd_cfg "$phy" "$vif" || return 1
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"
[ -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
$hostapd_cfg
bssid=$macaddr
${dtim_period:+dtim_period=$dtim_period}
${max_listen_int:+max_listen_interval=$max_listen_int}
EOF
}
mac80211_get_addr() {
local phy="$1"
local idx="$(($2 + 1))"
head -n $idx /sys/class/ieee80211/${phy}/addresses | tail -n1
}
mac80211_generate_mac() {
local phy="$1"
local id="${macidx:-0}"
local ref="$(cat /sys/class/ieee80211/${phy}/macaddress)"
local mask="$(cat /sys/class/ieee80211/${phy}/address_mask)"
[ "$mask" = "00:00:00:00:00:00" ] && {
mask="ff:ff:ff:ff:ff:ff";
[ "$(wc -l < /sys/class/ieee80211/${phy}/addresses)" -gt $id ] && {
addr="$(mac80211_get_addr "$phy" "$id")"
[ -n "$addr" ] && {
echo "$addr"
return
}
}
}
local oIFS="$IFS"; IFS=":"; set -- $mask; IFS="$oIFS"
local mask1=$1
local mask6=$6
local oIFS="$IFS"; IFS=":"; set -- $ref; IFS="$oIFS"
macidx=$(($id + 1))
[ "$((0x$mask1))" -gt 0 ] && {
b1="0x$1"
[ "$id" -gt 0 ] && \
b1=$(($b1 ^ ((($id - !($b1 & 2)) << 2)) | 0x2))
printf "%02x:%s:%s:%s:%s:%s" $b1 $2 $3 $4 $5 $6
return
}
[ "$((0x$mask6))" -lt 255 ] && {
printf "%s:%s:%s:%s:%s:%02x" $1 $2 $3 $4 $5 $(( 0x$6 ^ $id ))
return
}
off2=$(( (0x$6 + $id) / 0x100 ))
printf "%s:%s:%s:%s:%02x:%02x" \
$1 $2 $3 $4 \
$(( (0x$5 + $off2) % 0x100 )) \
$(( (0x$6 + $id) % 0x100 ))
}
find_phy() {
[ -n "$phy" -a -d /sys/class/ieee80211/$phy ] && return 0
[ -n "$path" ] && {
phy="$(iwinfo nl80211 phyname "path=$path")"
[ -n "$phy" ] && return 0
}
[ -n "$macaddr" ] && {
for phy in $(ls /sys/class/ieee80211 2>/dev/null); do
grep -i -q "$macaddr" "/sys/class/ieee80211/${phy}/macaddress" && return 0
done
}
return 1
}
mac80211_check_ap() {
has_ap=1
}
mac80211_iw_interface_add() {
local phy="$1"
local ifname="$2"
local type="$3"
local wdsflag="$4"
local rc
local oldifname
iw phy "$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" $wdsflag >/dev/null 2>&1
rc="$?"
}
[ "$rc" = 233 ] && {
# Keep matching pre-existing interface
[ -d "/sys/class/ieee80211/${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" $wdsflag >/dev/null 2>&1
rc="$?"
}
}
[ "$rc" != 0 ] && {
# Device might not support virtual interfaces, so the interface never got deleted in the first place.
# Check if the interface already exists, and avoid failing in this case.
[ -d "/sys/class/ieee80211/${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 ] && echo "Failed to create interface $ifname"
return $rc
}
mac80211_prepare_vif() {
json_select config
json_get_vars ifname mode ssid wds powersave macaddr enable wpa_psk_file vlan_file
[ -n "$ifname" ] || ifname="wlan${phy#phy}${if_idx:+-$if_idx}"
if_idx=$((${if_idx:-0} + 1))
set_default wds 0
set_default powersave 0
json_select ..
[ -n "$macaddr" ] || {
macaddr="$(mac80211_generate_mac $phy)"
macidx="$(($macidx + 1))"
}
json_add_object data
json_add_string ifname "$ifname"
json_close_object
[ "$mode" == "ap" ] && {
[ -z "$wpa_psk_file" ] && hostapd_set_psk "$ifname"
[ -z "$vlan_file" ] && hostapd_set_vlan "$ifname"
}
json_select config
# It is far easier to delete and create the desired interface
case "$mode" in
adhoc)
mac80211_iw_interface_add "$phy" "$ifname" adhoc || return
;;
ap)
# Hostapd will handle recreating the interface and
# subsequent virtual APs belonging to the same PHY
if [ -n "$hostapd_ctrl" ]; then
type=bss
else
type=interface
fi
mac80211_hostapd_setup_bss "$phy" "$ifname" "$macaddr" "$type" || return
NEWAPLIST="${NEWAPLIST}$ifname "
[ -n "$hostapd_ctrl" ] || {
ap_ifname="${ifname}"
hostapd_ctrl="${hostapd_ctrl:-/var/run/hostapd/$ifname}"
}
;;
mesh)
mac80211_iw_interface_add "$phy" "$ifname" mp || return
;;
monitor)
mac80211_iw_interface_add "$phy" "$ifname" monitor || return
;;
sta)
local wdsflag=
[ "$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"
;;
esac
case "$mode" in
monitor|mesh)
[ "$auto_channel" -gt 0 ] || iw dev "$ifname" set channel "$channel" $iw_htmode
;;
esac
if [ "$mode" != "ap" ]; then
# ALL ap functionality will be passed to hostapd
# All interfaces must have unique mac addresses
# which can either be explicitly set in the device
# section, or automatically generated
ip link set dev "$ifname" address "$macaddr"
fi
json_select ..
}
mac80211_setup_supplicant() {
local enable=$1
local add_sp=0
local spobj="$(ubus -S list | grep wpa_supplicant.${ifname})"
[ "$enable" = 0 ] && {
ubus call wpa_supplicant.${phy} config_remove "{\"iface\":\"$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
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() {
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" "$noscan"
NEWSPLIST="${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 $spobj reload
fi
}
mac80211_prepare_iw_htmode() {
case "$htmode" in
VHT20|HT20) iw_htmode=HT20;;
HT40*|VHT40|VHT160)
case "$band" in
2g)
case "$htmode" in
HT40+) iw_htmode="HT40+";;
HT40-) iw_htmode="HT40-";;
*)
if [ "$channel" -lt 7 ]; then
iw_htmode="HT40+"
else
iw_htmode="HT40-"
fi
;;
esac
;;
*)
case "$(( ($channel / 4) % 2 ))" in
1) iw_htmode="HT40+" ;;
0) iw_htmode="HT40-";;
esac
;;
esac
[ "$auto_channel" -gt 0 ] && iw_htmode="HT40+"
;;
VHT80)
iw_htmode="80MHZ"
;;
NONE|NOHT)
iw_htmode="NOHT"
;;
*) 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
case "$key" in
[1234])
local idx
for idx in 1 2 3 4; do
json_get_var ikey "key$idx"
[ -n "$ikey" ] && {
ikey="$(($idx - 1)):$(prepare_key_wep "$ikey")"
[ $idx -eq $key ] && ikey="d:$ikey"
append keyspec "$ikey"
}
done
;;
*)
append keyspec "d:0:$(prepare_key_wep "$key")"
;;
esac
}
brstr=
for br in $basic_rate_list; do
wpa_supplicant_add_rate brstr "$br"
done
mcval=
[ -n "$mcast_rate" ] && wpa_supplicant_add_rate mcval "$mcast_rate"
iw dev "$ifname" set type ibss
iw dev "$ifname" ibss join "$ssid" $freq $iw_htmode fixed-freq $bssid \
beacon-interval $beacon_int \
${brstr:+basic-rates $brstr} \
${mcval:+mcast-rate $mcval} \
${keyspec:+keys $keyspec}
}
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="$mesh_id"
iw dev "$ifname" mesh join "$ssid" freq $freq $iw_htmode \
${mcval:+mcast-rate $mcval} \
beacon-interval $beacon_int
}
mac80211_setup_vif() {
local name="$1"
local failed
local action=up
json_select data
json_get_vars ifname
json_select ..
json_select config
json_get_vars mode
json_get_var vif_txpower
json_get_var vif_enable enable 1
[ "$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";
if [ "$wpa" -gt 0 -o "$auto_channel" -gt 0 ] || chan_is_dfs "$phy" "$channel"; then
mac80211_setup_supplicant $vif_enable || failed=1
else
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"
[ -n "$mp_val" ] && iw dev "$ifname" set mesh_param "$var" "$mp_val"
done
;;
adhoc)
wireless_vif_parse_encryption
if [ "$wpa" -gt 0 -o "$auto_channel" -gt 0 ]; then
mac80211_setup_supplicant_noctl $vif_enable || failed=1
else
mac80211_setup_adhoc $vif_enable
fi
;;
sta)
mac80211_setup_supplicant $vif_enable || failed=1
;;
esac
json_select ..
[ -n "$failed" ] || wireless_add_vif "$name" "$ifname"
}
get_freq() {
local phy="$1"
local channel="$2"
local band="$3"
case "$band" in
2g) band="1:";;
5g) band="2:";;
60g) band="3:";;
6g) band="4:";;
esac
iw "$phy" info | awk -v band="$band" -v channel="[$channel]" '
$1 ~ /Band/ {
band_match = band == $2
}
band_match && $3 == "MHz" && $4 == channel {
print $2
exit
}
'
}
chan_is_dfs() {
local phy="$1"
local chan="$2"
iw "$phy" info | grep -E -m1 "(\* ${chan:-....} MHz${chan:+|\\[$chan\\]})" | grep -q "MHz.*radar detection"