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wifi: Introduce 802.11ac support

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This patch introduces 802.11ac support to mac80211 and hostapd. The split of
VHT160 in two 80 MHz bands is not yet supported, since it requires an
additional user supplied parameter for the channel of the second band.

Signed-off-by: Matti Laakso <malaakso@elisanet.fi>
Signed-off-by: Simon Wunderlich <simon@open-mesh.com>
[sven@open-mesh.com: Rebased patch, merged htmode and vhtmode,
removed special hwmode, replaced uci vht_capab list with overwritable
autoconfig, fixed hostapd integration, fixed commit description, add HT40+/-
for VHT modes, add VHT40 center_freq autoconfig, refactored major parts]
Signed-off-by: Sven Eckelmann <sven@open-mesh.com>

SVN-Revision: 39456
v19.07.3_mercusys_ac12_duma
Felix Fietkau 10 years ago
parent 169213a1b4
commit 38587f87ed
4 changed files with 185 additions and 2 deletions
Show Stats Download Patch File Download Diff File

168
package/kernel/mac80211/files/lib/netifd/wireless/mac80211.sh
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@ -23,6 +23,20 @@ drv_mac80211_init_device_config() {
config_add_int rxantenna txantenna antenna_gain txpower distance
config_add_boolean noscan
config_add_array ht_capab
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_mpdu vht_max_rx_stbc vht_link_adapt vht160
}
drv_mac80211_init_iface_config() {
@ -55,12 +69,164 @@ mac80211_hostapd_setup_base() {
append base_cfg "ieee80211n=1" "$N"
ht_capab=
[ -n "$htmode" ] && ht_capab="[$htmode]"
case "$htmode" in
HT20|HT40-|HT40+) ht_capab="[$htmode]";;
VHT40|VHT80|VHT160)
case "$channel" in
36|44|52|60|100|108|116|124|132|140|149|157) ht_capab="[HT40+]";;
40|48|56|64|104|112|120|128|136|144|153|161) ht_capab="[HT40-]";;
esac
;;
esac
for cap in $ht_capab_list; do
ht_capab="$ht_capab[$cap]"
done
[ -n "$ht_capab" ] && append base_cfg "ht_capab=$ht_capab" "$N"
# 802.11ac
enable_ac=0
idx="$channel"
case "$htmode" in
VHT40)
case "$channel" in
36|40) idx=38;;
44|48) idx=42;;
52|56) idx=54;;
60|64) idx=58;;
100|104) idx=102;;
108|112) idx=110;;
116|120) idx=118;;
124|128) idx=126;;
132|136) idx=134;;
140|144) idx=142;;
149|153) idx=151;;
157|161) idx=159;;
esac
enable_ac=1
append base_cfg "vht_oper_chwidth=0" "$N"
append base_cfg "vht_oper_centr_freq_seg0_idx=$idx" "$N"
;;
VHT80)
case "$channel" in
36|40|44|48) idx=42;;
52|56|60|64) idx=58;;
100|104|108|112) idx=106;;
116|120|124|128) idx=122;;
132|136|140|144) idx=138;;
149|153|157|161) idx=155;;
esac
enable_ac=1
append base_cfg "vht_oper_chwidth=1" "$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 [ "$enable_ac" != "0" ]; then
json_get_vars \
rxldpc:1 \
short_gi_80:1 \
short_gi_160:1 \
tx_stbc_2by1:1 \
su_beamformer:1 \
su_beamformee:1 \
mu_beamformer:1 \
mu_beamformee:1 \
vht_txop_ps:1 \
htc_vht:1 \
rx_antenna_pattern:1 \
tx_antenna_pattern:1 \
vht_max_mpdu:11454 \
vht_max_rx_stbc:4 \
vht_link_adapt:3 \
vht160:2
append base_cfg "ieee80211ac=1" "$N"
vht_capab=""
vht_cap=0
for cap in $(iw phy "$phy" info | awk -F "[()]" '/VHT Capabilities/ { print $2 }'); do
vht_cap="$(($vht_cap | $cap))"
done
# boolean
[ "$((($vht_cap & 16) * $rxldpc))" -eq 16 ] && \
vht_capab="$vht_capab[RXLDPC]"
[ "$((($vht_cap & 32) * $short_gi_80))" -eq 32 ] && \
vht_capab="$vht_capab[SHORT-GI-80]"
[ "$((($vht_cap & 64) * $short_gi_160))" -eq 64 ] && \
vht_capab="$vht_capab[SHORT-GI-160]"
[ "$((($vht_cap & 128) * $tx_stbc_2by1))" -eq 128 ] && \
vht_capab="$vht_capab[TX-STBC-2BY1]"
[ "$((($vht_cap & 2048) * $su_beamformer))" -eq 2048 ] && \
vht_capab="$vht_capab[SU-BEAMFORMER]"
[ "$((($vht_cap & 4096) * $su_beamformee))" -eq 4096 ] && \
vht_capab="$vht_capab[SU-BEAMFORMEE]"
[ "$((($vht_cap & 524288) * $mu_beamformer))" -eq 524288 ] && \
vht_capab="$vht_capab[MU-BEAMFORMER]"
[ "$((($vht_cap & 1048576) * $mu_beamformee))" -eq 1048576 ] && \
vht_capab="$vht_capab[MU-BEAMFORMEE]"
[ "$((($vht_cap & 2097152) * $vht_txop_ps))" -eq 2097152 ] && \
vht_capab="$vht_capab[VHT-TXOP-PS]"
[ "$((($vht_cap & 4194304) * $htc_vht))" -eq 4194304 ] && \
vht_capab="$vht_capab[HTC-VHT]"
[ "$((($vht_cap & 268435456) * $rx_antenna_pattern))" -eq 268435456 ] && \
vht_capab="$vht_capab[RX-ANTENNA-PATTERN]"
[ "$((($vht_cap & 536870912) * $tx_antenna_pattern))" -eq 536870912 ] && \
vht_capab="$vht_capab[TX-ANTENNA-PATTERN]"
# 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-$vht_max_mpdu_hw]"
# support for the reception of PPDUs using STBC
vht_max_rx_stbc_hw=0
[ "$(($vht_cap & 1792))" -ge 256 -a 1 -le "$vht_max_rx_stbc" ] && \
vht_max_rx_stbc_hw=1
[ "$(($vht_cap & 1792))" -ge 512 -a 2 -le "$vht_max_rx_stbc" ] && \
vht_max_rx_stbc_hw=2
[ "$(($vht_cap & 1792))" -ge 768 -a 3 -le "$vht_max_rx_stbc" ] && \
vht_max_rx_stbc_hw=3
[ "$(($vht_cap & 1792))" -ge 1024 -a 4 -le "$vht_max_rx_stbc" ] && \
vht_max_rx_stbc_hw=4
[ "$vht_max_rx_stbc_hw" = 1 ] && vht_capab="$vht_capab[RX-STBC-1]"
[ "$vht_max_rx_stbc_hw" = 2 ] && vht_capab="$vht_capab[RX-STBC-12]"
[ "$vht_max_rx_stbc_hw" = 3 ] && vht_capab="$vht_capab[RX-STBC-123]"
[ "$vht_max_rx_stbc_hw" = 4 ] && vht_capab="$vht_capab[RX-STBC-1234]"
# whether or not the STA supports link adaptation using VHT variant
vht_link_adapt_hw=0
[ "$(($vht_cap & 201326592))" -ge 134217728 -a 2 -le "$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

13
package/kernel/mac80211/files/lib/wifi/mac80211.sh
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@ -69,6 +69,8 @@ detect_mac80211() {
mode_11n=""
mode_band="g"
channel="11"
htmode=""
ht_cap=0
for cap in $(iw phy "$dev" info | grep 'Capabilities:' | cut -d: -f2); do
ht_cap="$(($ht_cap | $cap))"
@ -76,7 +78,7 @@ detect_mac80211() {
ht_capab="";
[ "$ht_cap" -gt 0 ] && {
mode_11n="n"
append ht_capab " option htmode HT20" "$N"
htmode="HT20"
list=" list ht_capab"
[ "$(($ht_cap & 1))" -eq 1 ] && append ht_capab "$list LDPC" "$N"
@ -91,6 +93,15 @@ detect_mac80211() {
}
iw phy "$dev" info | grep -q '2412 MHz' || { mode_band="a"; channel="36"; }
vht_cap=$(iw phy "$dev" info | grep -c 'VHT Capabilities')
[ "$vht_cap" -gt 0 ] && {
mode_band="a";
channel="36"
htmode="VHT80"
}
[ -n $htmode ] && append ht_capab " option htmode $htmode" "$N"
if [ -x /usr/bin/readlink ]; then
path="$(readlink -f /sys/class/ieee80211/${dev}/device)"
path="${path##/sys/devices/}"

3
package/network/services/hostapd/files/hostapd-full.config
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@ -139,6 +139,9 @@ CONFIG_IEEE80211R=y
# IEEE 802.11n (High Throughput) support
CONFIG_IEEE80211N=y
# IEEE 802.11ac (Very High Throughput) support
CONFIG_IEEE80211AC=y
# Remove debugging code that is printing out debug messages to stdout.
# This can be used to reduce the size of the hostapd considerably if debugging
# code is not needed.

3
package/network/services/hostapd/files/hostapd-mini.config
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@ -138,6 +138,9 @@ CONFIG_PEERKEY=y
# IEEE 802.11n (High Throughput) support
CONFIG_IEEE80211N=y
# IEEE 802.11ac (Very High Throughput) support
CONFIG_IEEE80211AC=y
# Remove debugging code that is printing out debug messages to stdout.
# This can be used to reduce the size of the hostapd considerably if debugging
# code is not needed.

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