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20c667cc88
openwrt/package/kernel/mac80211/files/lib/netifd/wireless/mac80211.sh
Felix Fietkau 20c667cc88 hostapd: rework reload support and MAC address handling 
MAC address and interface name assigned by mac80211.sh depend on the order in
which interfaces are brought up. This order changes when interfaces get added
or removed, which can cause unnecessary reload churn.

One part of the fix it making MAC address allocation more dynamic in both
wpa_supplicant and hostapd, by ignoring the provided MAC address using
the next available one, whenever the config does not explicitly specify one.

The other part is making use of support for renaming netdevs at runtime and
preserving the MAC address for renamed netdevs.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2023-09-13 12:37:44 +02:00

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#!/bin/sh
. /lib/netifd/netifd-wireless.sh
. /lib/netifd/hostapd.sh
. /lib/functions/system.sh
init_wireless_driver "$@"
MP_CONFIG_INT="mesh_retry_timeout mesh_confirm_timeout mesh_holding_timeout mesh_max_peer_links
mesh_max_retries mesh_ttl mesh_element_ttl mesh_hwmp_max_preq_retries
mesh_path_refresh_time mesh_min_discovery_timeout mesh_hwmp_active_path_timeout
mesh_hwmp_preq_min_interval mesh_hwmp_net_diameter_traversal_time mesh_hwmp_rootmode
mesh_hwmp_rann_interval mesh_gate_announcements mesh_sync_offset_max_neighor
mesh_rssi_threshold mesh_hwmp_active_path_to_root_timeout mesh_hwmp_root_interval
mesh_hwmp_confirmation_interval mesh_awake_window mesh_plink_timeout"
MP_CONFIG_BOOL="mesh_auto_open_plinks mesh_fwding"
MP_CONFIG_STRING="mesh_power_mode"
wdev_tool() {
ucode /usr/share/hostap/wdev.uc "$@"
}
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 txpower min_tx_power
config_add_int num_global_macaddr multiple_bssid
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_spr_psr_enabled \
he_bss_color_enabled \
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 tx_burst
json_get_values ht_capab_list ht_capab
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 [ "$enable_ax" != "0" ]; then
json_get_vars \
he_su_beamformer:1 \
he_su_beamformee:1 \
he_mu_beamformer:1 \
he_twt_required:0 \
he_spr_sr_control:3 \
he_spr_psr_enabled:0 \
he_spr_non_srg_obss_pd_max_offset:0 \
he_bss_color:128 \
he_bss_color_enabled:1
he_phy_cap=$(iw phy "$phy" info | sed -n '/HE Iftypes: AP/,$p' | awk -F "[()]" '/HE PHY Capabilities/ { print $2 }' | head -1)
he_phy_cap=${he_phy_cap:2}
he_mac_cap=$(iw phy "$phy" info | sed -n '/HE Iftypes: AP/,$p' | 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"
}
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_psr_enabled:${he_phy_cap:14:2}:0x1:$he_spr_psr_enabled \
he_twt_required:${he_mac_cap:0:2}:0x6:$he_twt_required
if [ "$he_bss_color_enabled" -gt 0 ]; then
append base_cfg "he_bss_color=$he_bss_color" "$N"
[ "$he_spr_non_srg_obss_pd_max_offset" -gt 0 ] && { \
append base_cfg "he_spr_non_srg_obss_pd_max_offset=$he_spr_non_srg_obss_pd_max_offset" "$N"
he_spr_sr_control=$((he_spr_sr_control | (1 << 2)))
}
[ "$he_spr_psr_enabled" -gt 0 ] || he_spr_sr_control=$((he_spr_sr_control | (1 << 0)))
append base_cfg "he_spr_sr_control=$he_spr_sr_control" "$N"
else
append base_cfg "he_bss_color_disabled=1" "$N"
fi
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}
mbssid=$multiple_bssid
#num_global_macaddr=$num_global_macaddr
$base_cfg
EOF
json_select ..
}
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
${default_macaddr:+#default_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}"
wdev_tool "$phy" get_macaddr id=$id num_global=$num_global_macaddr mbssid=$multiple_bssid
}
get_board_phy_name() (
local path="$1"
local fallback_phy=""
__check_phy() {
local val="$1"
local key="$2"
local ref_path="$3"
json_select "$key"
json_get_values path
json_select ..
[ "${ref_path%+*}" = "$path" ] && fallback_phy=$key
[ "$ref_path" = "$path" ] || return 0
echo "$key"
exit
}
json_load_file /etc/board.json
json_for_each_item __check_phy wlan "$path"
[ -n "$fallback_phy" ] && echo "${fallback_phy}.${path##*+}"
)
rename_board_phy_by_path() {
local path="$1"
local new_phy="$(get_board_phy_name "$path")"
[ -z "$new_phy" -o "$new_phy" = "$phy" ] && return
iw "$phy" set name "$new_phy" && phy="$new_phy"
}
rename_board_phy_by_name() (
local phy="$1"
local suffix="${phy##*.}"
[ "$suffix" = "$phy" ] && suffix=
json_load_file /etc/board.json
json_select wlan
json_select "${phy%.*}" || return 0
json_get_values path
prev_phy="$(iwinfo nl80211 phyname "path=$path${suffix:++$suffix}")"
[ -n "$prev_phy" ] || return 0
[ "$prev_phy" = "$phy" ] && return 0
iw "$prev_phy" set name "$phy"
)
find_phy() {
[ -n "$phy" ] && {
rename_board_phy_by_name "$phy"
[ -d /sys/class/ieee80211/$phy ] && return 0
}
[ -n "$path" ] && {
phy="$(iwinfo nl80211 phyname "path=$path")"
[ -n "$phy" ] && {
rename_board_phy_by_path "$path"
return 0
}
}
[ -n "$macaddr" ] && {
for phy in $(ls /sys/class/ieee80211 2>/dev/null); do
grep -i -q "$macaddr" "/sys/class/ieee80211/${phy}/macaddress" && {
path="$(iwinfo nl80211 path "$phy")"
rename_board_phy_by_path "$path"
return 0
}
done
}
return 1
}
mac80211_check_ap() {
has_ap=1
}
mac80211_set_ifname() {
local phy="$1"
local prefix="$2"
eval "ifname=\"$phy-$prefix\${idx_$prefix:-0}\"; idx_$prefix=\$((\${idx_$prefix:-0 } + 1))"
}
mac80211_prepare_vif() {
json_select config
json_get_vars ifname mode ssid wds powersave macaddr enable wpa_psk_file vlan_file
[ -n "$ifname" ] || {
local prefix;
case "$mode" in
ap|sta|mesh) prefix=$mode;;
adhoc) prefix=ibss;;
monitor) prefix=mon;;
esac
mac80211_set_ifname "$phy" "$prefix"
}
append active_ifnames "$ifname"
set_default wds 0
set_default powersave 0
json_add_string _ifname "$ifname"
default_macaddr=
if [ -z "$macaddr" ]; then
macaddr="$(mac80211_generate_mac $phy)"
macidx="$(($macidx + 1))"
default_macaddr=1
elif [ "$macaddr" = 'random' ]; then
macaddr="$(macaddr_random)"
fi
json_add_string _macaddr "$macaddr"
json_add_string _default_macaddr "$default_macaddr"
json_select ..
[ "$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 "$mode" in
ap)
# Hostapd will handle recreating the interface and
# subsequent virtual APs belonging to the same PHY
if [ -n "$hostapd_ctrl" ]; then
type=bss
else
type=interface
fi
mac80211_hostapd_setup_bss "$phy" "$ifname" "$macaddr" "$type" || return
[ -n "$hostapd_ctrl" ] || {
ap_ifname="${ifname}"
hostapd_ctrl="${hostapd_ctrl:-/var/run/hostapd/$ifname}"
}
;;
esac
json_select ..
}
mac80211_prepare_iw_htmode() {
case "$htmode" in
VHT20|HT20|HE20) iw_htmode=HT20;;
HT40*|VHT40|VHT160|HE40)
case "$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|HE80)
iw_htmode="80MHZ"
;;
NONE|NOHT)
iw_htmode="NOHT"
;;
*) iw_htmode="" ;;
esac
}
mac80211_add_mesh_params() {
for var in $MP_CONFIG_INT $MP_CONFIG_BOOL $MP_CONFIG_STRING; do
eval "mp_val=\"\$$var\""
[ -n "$mp_val" ] && json_add_string "$var" "$mp_val"
done
}
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"
local prev
json_set_namespace wdev_uc prev
json_add_object "$ifname"
json_add_string mode adhoc
[ -n "$default_macaddr" ] || json_add_string macaddr "$macaddr"
json_add_string ssid "$ssid"
json_add_string freq "$freq"
json_add_string htmode "$iw_htmode"
[ -n "$bssid" ] && json_add_string bssid "$bssid"
json_add_int beacon-interval "$beacon_int"
[ -n "$brstr" ] && json_add_string basic-rates "$brstr"
[ -n "$mcval" ] && json_add_string mcast-rate "$mcval"
[ -n "$keyspec" ] && json_add_string keys "$keyspec"
json_close_object
json_set_namespace "$prev"
}
mac80211_setup_mesh() {
json_get_vars ssid mesh_id mcast_rate
mcval=
[ -n "$mcast_rate" ] && wpa_supplicant_add_rate mcval "$mcast_rate"
[ -n "$mesh_id" ] && ssid="$mesh_id"
local prev
json_set_namespace wdev_uc prev
json_add_object "$ifname"
json_add_string mode mesh
[ -n "$default_macaddr" ] || json_add_string macaddr "$macaddr"
json_add_string ssid "$ssid"
json_add_string freq "$freq"
json_add_string htmode "$iw_htmode"
[ -n "$mcval" ] && json_add_string mcast-rate "$mcval"
json_add_int beacon-interval "$beacon_int"
mac80211_add_mesh_params
json_close_object
json_set_namespace "$prev"
}
mac80211_setup_monitor() {
local prev
json_set_namespace wdev_uc prev
json_add_object "$ifname"
json_add_string mode monitor
[ -n "$freq" ] && json_add_string freq "$freq"
json_add_string htmode "$iw_htmode"
json_close_object
json_set_namespace "$prev"
}
mac80211_set_vif_txpower() {
local name="$1"
json_select config
json_get_var ifname _ifname
json_get_vars vif_txpower
json_select ..
[ -z "$vif_txpower" ] || iw dev "$ifname" set txpower fixed "${vif_txpower%%.*}00"
}
wpa_supplicant_init_config() {
json_set_namespace wpa_supp prev
json_init
json_add_array config
json_set_namespace "$prev"
}
wpa_supplicant_add_interface() {
local ifname="$1"
local mode="$2"
local prev
_wpa_supplicant_common "$ifname"
json_set_namespace wpa_supp prev
json_add_object
json_add_string ctrl "$_rpath"
json_add_string iface "$ifname"
json_add_string mode "$mode"
json_add_string config "$_config"
[ -n "$default_macaddr" ] || json_add_string macaddr "$macaddr"
[ -n "$network_bridge" ] && json_add_string bridge "$network_bridge"
[ -n "$wds" ] && json_add_boolean 4addr "$wds"
json_add_boolean powersave "$powersave"
[ "$mode" = "mesh" ] && mac80211_add_mesh_params
json_close_object
json_set_namespace "$prev"
wpa_supp_init=1
}
wpa_supplicant_set_config() {
local phy="$1"
local prev
json_set_namespace wpa_supp prev
json_close_array
json_add_string phy "$phy"
json_add_boolean defer 1
local data="$(json_dump)"
json_cleanup
json_set_namespace "$prev"
ubus -S -t 0 wait_for wpa_supplicant || {
[ -n "$wpa_supp_init" ] || return 0
ubus wait_for wpa_supplicant
}
local supplicant_res="$(ubus call wpa_supplicant config_set "$data")"
ret="$?"
[ "$ret" != 0 -o -z "$supplicant_res" ] && wireless_setup_vif_failed WPA_SUPPLICANT_FAILED
wireless_add_process "$(jsonfilter -s "$supplicant_res" -l 1 -e @.pid)" "/usr/sbin/wpa_supplicant" 1 1
}
hostapd_set_config() {
[ -n "$hostapd_ctrl" ] || {
ubus call hostapd config_set '{ "phy": "'"$phy"'", "config": "", "prev_config": "'"${hostapd_conf_file}.prev"'" }' > /dev/null
return 0;
}
ubus wait_for hostapd
local hostapd_res="$(ubus call hostapd config_set "{ \"phy\": \"$phy\", \"config\":\"${hostapd_conf_file}\", \"prev_config\": \"${hostapd_conf_file}.prev\"}")"
ret="$?"
[ "$ret" != 0 -o -z "$hostapd_res" ] && {
wireless_setup_failed HOSTAPD_START_FAILED
return
}
wireless_add_process "$(jsonfilter -s "$hostapd_res" -l 1 -e @.pid)" "/usr/sbin/hostapd" 1 1
}
wpa_supplicant_start() {
local phy="$1"
[ -n "$wpa_supp_init" ] || return 0
ubus call wpa_supplicant config_set '{ "phy": "'"$phy"'" }' > /dev/null
}
mac80211_setup_supplicant() {
local enable=$1
local add_sp=0
wpa_supplicant_prepare_interface "$ifname" nl80211 || return 1
if [ "$mode" = "sta" ]; then
wpa_supplicant_add_network "$ifname"
else
wpa_supplicant_add_network "$ifname" "$freq" "$htmode" "$noscan"
fi
wpa_supplicant_add_interface "$ifname" "$mode"
return 0
}
mac80211_setup_vif() {
local name="$1"
local failed
json_select config
json_get_var ifname _ifname
json_get_var macaddr _macaddr
json_get_var default_macaddr _default_macaddr
json_get_vars mode wds powersave
set_default powersave 0
set_default wds 0
case "$mode" in
mesh)
json_get_vars $MP_CONFIG_INT $MP_CONFIG_BOOL $MP_CONFIG_STRING
wireless_vif_parse_encryption
[ -z "$htmode" ] && htmode="NOHT";
if wpa_supplicant -vmesh; then
mac80211_setup_supplicant || failed=1
else
mac80211_setup_mesh
fi
;;
adhoc)
wireless_vif_parse_encryption
if [ "$wpa" -gt 0 -o "$auto_channel" -gt 0 ]; then
mac80211_setup_supplicant || failed=1
else
mac80211_setup_adhoc
fi
;;
sta)
mac80211_setup_supplicant || failed=1
;;
monitor)
mac80211_setup_monitor
;;
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"
return $!
}
mac80211_set_noscan() {
hostapd_noscan=1
}
drv_mac80211_cleanup() {
hostapd_common_cleanup
}
mac80211_reset_config() {
local phy="$1"
hostapd_conf_file="/var/run/hostapd-$phy.conf"
ubus call hostapd config_set '{ "phy": "'"$phy"'", "config": "", "prev_config": "'"$hostapd_conf_file"'" }' > /dev/null
ubus call wpa_supplicant config_set '{ "phy": "'"$phy"'", "config": [] }' > /dev/null
wdev_tool "$phy" set_config '{}'
}
drv_mac80211_setup() {
json_select config
json_get_vars \
phy macaddr path \
country chanbw distance \
txpower \
rxantenna txantenna \
frag rts beacon_int:100 htmode \
num_global_macaddr:1 multiple_bssid:0
json_get_values basic_rate_list basic_rate
json_get_values scan_list scan_list
json_select ..
json_select data && {
json_get_var prev_rxantenna rxantenna
json_get_var prev_txantenna txantenna
json_select ..
}
find_phy || {
echo "Could not find PHY for device '$1'"
wireless_set_retry 0
return 1
}
local wdev
local cwdev
local found
# convert channel to frequency
[ "$auto_channel" -gt 0 ] || freq="$(get_freq "$phy" "$channel" "$band")"
[ -n "$country" ] && {
iw reg get | grep -q "^country $country:" || {
iw reg set "$country"
sleep 1
}
}
hostapd_conf_file="/var/run/hostapd-$phy.conf"
macidx=0
staidx=0
[ -n "$chanbw" ] && {
for file in /sys/kernel/debug/ieee80211/$phy/ath9k*/chanbw /sys/kernel/debug/ieee80211/$phy/ath5k/bwmode; do
[ -f "$file" ] && echo "$chanbw" > "$file"
done
}
set_default rxantenna 0xffffffff
set_default txantenna 0xffffffff
set_default distance 0
[ "$txantenna" = "all" ] && txantenna=0xffffffff
[ "$rxantenna" = "all" ] && rxantenna=0xffffffff
[ "$rxantenna" = "$prev_rxantenna" -a "$txantenna" = "$prev_txantenna" ] || mac80211_reset_config "$phy"
wireless_set_data phy="$phy" txantenna="$txantenna" rxantenna="$rxantenna"
iw phy "$phy" set antenna $txantenna $rxantenna >/dev/null 2>&1
iw phy "$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 "${rts%%.*}"
has_ap=
hostapd_ctrl=
ap_ifname=
hostapd_noscan=
wpa_supp_init=
for_each_interface "ap" mac80211_check_ap
[ -f "$hostapd_conf_file" ] && mv "$hostapd_conf_file" "$hostapd_conf_file.prev"
for_each_interface "sta adhoc mesh" mac80211_set_noscan
[ -n "$has_ap" ] && mac80211_hostapd_setup_base "$phy"
local prev
json_set_namespace wdev_uc prev
json_init
json_set_namespace "$prev"
wpa_supplicant_init_config
mac80211_prepare_iw_htmode
active_ifnames=
for_each_interface "ap sta adhoc mesh monitor" mac80211_prepare_vif
for_each_interface "ap sta adhoc mesh monitor" mac80211_setup_vif
[ -x /usr/sbin/wpa_supplicant ] && wpa_supplicant_set_config "$phy"
[ -x /usr/sbin/hostapd ] && hostapd_set_config "$phy"
[ -x /usr/sbin/wpa_supplicant ] && wpa_supplicant_start "$phy"
json_set_namespace wdev_uc prev
wdev_tool "$phy" set_config "$(json_dump)" $active_ifnames
json_set_namespace "$prev"
for_each_interface "ap sta adhoc mesh monitor" mac80211_set_vif_txpower
wireless_set_up
}
_list_phy_interfaces() {
local phy="$1"
if [ -d "/sys/class/ieee80211/${phy}/device/net" ]; then
ls "/sys/class/ieee80211/${phy}/device/net" 2>/dev/null;
else
ls "/sys/class/ieee80211/${phy}/device" 2>/dev/null | grep net: | sed -e 's,net:,,g'
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 "$dev"
done
}
drv_mac80211_teardown() {
json_select data
json_get_vars phy
json_select ..
[ -n "$phy" ] || {
echo "Bug: PHY is undefined for device '$1'"
return 1
}
mac80211_reset_config "$phy"
for wdev in $(list_phy_interfaces "$phy"); do
ip link set dev "$wdev" down
iw dev "$wdev" del
done
}
add_driver mac80211
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