#!/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" iw() { command iw $@ || logger -t mac80211 "Failed command: iw $@" } drv_mac80211_init_device_config() { hostapd_common_add_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 config_add_boolean noscan ht_coex config_add_array ht_capab config_add_array channels config_add_boolean \ rxldpc \ short_gi_80 \ short_gi_160 \ tx_stbc_2by1 \ su_beamformer \ su_beamformee \ mu_beamformer \ mu_beamformee \ vht_txop_ps \ htc_vht \ rx_antenna_pattern \ tx_antenna_pattern config_add_int vht_max_a_mpdu_len_exp vht_max_mpdu vht_link_adapt vht160 rx_stbc tx_stbc 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 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_hostapd_setup_base() { local phy="$1" json_select config [ "$auto_channel" -gt 0 ] && channel=acs_survey [ "$auto_channel" -gt 0 ] && json_get_values channel_list channels json_get_vars noscan ht_coex json_get_values ht_capab_list ht_capab tx_burst set_default noscan 0 [ "$noscan" -gt 0 ] && hostapd_noscan=1 [ "$tx_burst" = 0 ] && tx_burst= ieee80211n=1 ht_capab= case "$htmode" in VHT20|HT20) ;; HT40*|VHT40|VHT80|VHT160) case "$hwmode" in a) case "$(( ($channel / 4) % 2 ))" in 1) ht_capab="[HT40+]";; 0) ht_capab="[HT40-]";; esac ;; *) case "$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" "$N" } # 802.11ac enable_ac=0 idx="$channel" case "$htmode" in VHT20) enable_ac=1;; VHT40) case "$(( ($channel / 4) % 2 ))" in 1) idx=$(($channel + 2));; 0) idx=$(($channel - 2));; esac enable_ac=1 append base_cfg "vht_oper_chwidth=0" "$N" append base_cfg "vht_oper_centr_freq_seg0_idx=$idx" "$N" ;; VHT80) case "$(( ($channel / 4) % 4 ))" in 1) idx=$(($channel + 6));; 2) idx=$(($channel + 2));; 3) idx=$(($channel - 2));; 0) idx=$(($channel - 6));; esac enable_ac=1 append base_cfg "vht_oper_chwidth=1" "$N" append base_cfg "vht_oper_centr_freq_seg0_idx=$idx" "$N" ;; VHT160) case "$channel" in 36|40|44|48|52|56|60|64) idx=50;; 100|104|108|112|116|120|124|128) idx=114;; esac enable_ac=1 append base_cfg "vht_oper_chwidth=2" "$N" append base_cfg "vht_oper_centr_freq_seg0_idx=$idx" "$N" ;; esac if [ "$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 \ 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 | $cap))" done cap_rx_stbc=$((($vht_cap >> 8) & 7)) [ "$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::$tx_antenna_pattern \ RX-STBC-1:0x700:0x100:1 \ RX-STBC-12:0x700:0x200:1 \ RX-STBC-123:0x700:0x300:1 \ RX-STBC-1234:0x700:0x400:1 \ # supported Channel widths vht160_hw=0 [ "$(($vht_cap & 12))" -eq 4 -a 1 -le "$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" "$N" fi hostapd_prepare_device_config "$hostapd_conf_file" nl80211 cat >> "$hostapd_conf_file" <> /var/run/hostapd-$phy.conf </dev/null); do case "$(readlink -f /sys/class/ieee80211/$phy/device)" in *$path) return 0;; esac done } [ -n "$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="$4" local rc iw phy "$phy" interface add "$ifname" type "$type" $wdsflag rc="$?" [ "$rc" = 233 ] && { # Device might have just been deleted, give the kernel some time to finish cleaning it up sleep 1 iw phy "$phy" interface add "$ifname" type "$type" $wdsflag rc="$?" } [ "$rc" = 233 ] && { # Device might not support virtual interfaces, so the interface never got deleted in the first place. # Check if the interface already exists, and avoid failing in this case. ip link show dev "$ifname" >/dev/null 2>/dev/null && rc=0 } [ "$rc" != 0 ] && wireless_setup_failed INTERFACE_CREATION_FAILED return $rc } mac80211_prepare_vif() { json_select config json_get_vars ifname mode ssid wds powersave macaddr [ -n "$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 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 [ -n "$hostapd_ctrl" ] || { mac80211_iw_interface_add "$phy" "$ifname" __ap || return hostapd_ctrl="${hostapd_ctrl:-/var/run/hostapd/$ifname}" } ;; mesh) mac80211_iw_interface_add "$phy" "$ifname" mp || return ;; monitor) mac80211_iw_interface_add "$phy" "$ifname" monitor || return ;; sta) local wdsflag= staidx="$(($staidx + 1))" [ "$wds" -gt 0 ] && wdsflag="4addr on" mac80211_iw_interface_add "$phy" "$ifname" managed "$wdsflag" || return [ "$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() { 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" "$noscan" fi wpa_supplicant_run "$ifname" ${hostapd_ctrl:+-H $hostapd_ctrl} } mac80211_setup_supplicant_noctl() { wpa_supplicant_prepare_interface "$ifname" nl80211 || return 1 wpa_supplicant_add_network "$ifname" "$freq" "$htmode" "$noscan" wpa_supplicant_run "$ifname" } mac80211_prepare_iw_htmode() { case "$htmode" in VHT20|HT20) iw_htmode=HT20;; HT40*|VHT40|VHT160) case "$hwmode" in a) case "$(( ($channel / 4) % 2 ))" in 1) iw_htmode="HT40+" ;; 0) iw_htmode="HT40-";; esac ;; *) case "$htmode" in HT40+) iw_htmode="HT40+";; HT40-) iw_htmode="HT40-";; *) if [ "$channel" -lt 7 ]; then iw_htmode="HT40+" else iw_htmode="HT40-" fi ;; esac ;; esac [ "$auto_channel" -gt 0 ] && iw_htmode="HT40+" ;; VHT80) iw_htmode="80MHZ" ;; NONE|NOHT) iw_htmode="NOHT" ;; *) iw_htmode="" ;; esac } mac80211_setup_adhoc() { json_get_vars bssid ssid key mcast_rate 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 "$ifname" ibss join "$ssid" $freq $iw_htmode fixed-freq $bssid \ beacon-interval $beacon_int \ ${brstr:+basic-rates $brstr} \ ${mcval:+mcast-rate $mcval} \ ${keyspec:+keys $keyspec} } mac80211_setup_mesh() { json_get_vars ssid mesh_id mcast_rate mcval= [ -n "$mcast_rate" ] && wpa_supplicant_add_rate mcval "$mcast_rate" [ -n "$mesh_id" ] && ssid="$mesh_id" iw dev "$ifname" mesh join "$ssid" freq $freq $iw_htmode \ ${mcval:+mcast-rate $mcval} \ beacon-interval $beacon_int } mac80211_setup_vif() { local name="$1" local failed json_select data json_get_vars ifname json_select .. json_select config json_get_vars mode json_get_var vif_txpower txpower ip link set dev "$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" case "$mode" in mesh) wireless_vif_parse_encryption freq="$(get_freq "$phy" "$channel")" if [ "$wpa" -gt 0 -o "$auto_channel" -gt 0 ] || chan_is_dfs "$phy" "$channel"; then mac80211_setup_supplicant || failed=1 else mac80211_setup_mesh 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 freq="$(get_freq "$phy" "$channel")" mac80211_setup_supplicant_noctl || failed=1 else mac80211_setup_adhoc fi ;; sta) mac80211_setup_supplicant || failed=1 ;; esac json_select .. [ -n "$failed" ] || wireless_add_vif "$name" "$ifname" } get_freq() { local phy="$1" local chan="$2" iw "$phy" info | grep -E -m1 "(\* ${chan:-....} MHz${chan:+|\\[$chan\\]})" | grep MHz | awk '{print $2}' } 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_interface_cleanup() { local phy="$1" for wdev in $(list_phy_interfaces "$phy"); do ip link set dev "$wdev" down 2>/dev/null iw dev "$wdev" del done } mac80211_set_noscan() { hostapd_noscan=1 } drv_mac80211_cleanup() { hostapd_common_cleanup } drv_mac80211_setup() { json_select config json_get_vars \ phy macaddr path \ country chanbw distance \ txpower antenna_gain \ rxantenna txantenna \ frag rts beacon_int:100 htmode json_get_values basic_rate_list basic_rate json_select .. find_phy || { echo "Could not find PHY for device '$1'" wireless_set_retry 0 return 1 } wireless_set_data phy="$phy" mac80211_interface_cleanup "$phy" # convert channel to frequency [ "$auto_channel" -gt 0 ] || freq="$(get_freq "$phy" "$channel")" [ -n "$country" ] && { iw reg get | grep -q "^country $country:" || { iw reg set "$country" sleep 1 } } hostapd_conf_file="/var/run/hostapd-$phy.conf" no_ap=1 macidx=0 staidx=0 [ -n "$chanbw" ] && { for file in /sys/kernel/debug/ieee80211/$phy/ath9k/chanbw /sys/kernel/debug/ieee80211/$phy/ath5k/bwmode; do [ -f "$file" ] && echo "$chanbw" > "$file" done } set_default rxantenna 0xffffffff set_default txantenna 0xffffffff set_default distance 0 set_default antenna_gain 0 [ "$txantenna" = "all" ] && txantenna=0xffffffff [ "$rxantenna" = "all" ] && rxantenna=0xffffffff iw phy "$phy" set antenna $txantenna $rxantenna >/dev/null 2>&1 iw phy "$phy" set antenna_gain $antenna_gain iw phy "$phy" set distance "$distance" [ -n "$frag" ] && iw phy "$phy" set frag "${frag%%.*}" [ -n "$rts" ] && iw phy "$phy" set rts "${rts%%.*}" has_ap= hostapd_ctrl= hostapd_noscan= for_each_interface "ap" mac80211_check_ap rm -f "$hostapd_conf_file" 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 for_each_interface "ap" mac80211_prepare_vif [ -n "$hostapd_ctrl" ] && { /usr/sbin/hostapd -s -P /var/run/wifi-$phy.pid -B "$hostapd_conf_file" ret="$?" wireless_add_process "$(cat /var/run/wifi-$phy.pid)" "/usr/sbin/hostapd" 1 [ "$ret" != 0 ] && { wireless_setup_failed HOSTAPD_START_FAILED return } } for_each_interface "ap sta adhoc mesh monitor" mac80211_setup_vif 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 } drv_mac80211_teardown() { wireless_process_kill_all json_select data json_get_vars phy json_select .. mac80211_interface_cleanup "$phy" } add_driver mac80211