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authorFelix Fietkau <nbd@openwrt.org>2014-02-03 13:31:44 +0000
committerFelix Fietkau <nbd@openwrt.org>2014-02-03 13:31:44 +0000
commit38587f87ed27ea0b1db59103a219a6270575f1d3 (patch)
tree1c888a4dbcca2c7ce449e9c7c476c671e796a734 /package/kernel
parent169213a1b44f03fb9831bff15cc35ac384a947f3 (diff)
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wifi: Introduce 802.11ac support
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
Diffstat (limited to 'package/kernel')
-rw-r--r--package/kernel/mac80211/files/lib/netifd/wireless/mac80211.sh168
-rw-r--r--package/kernel/mac80211/files/lib/wifi/mac80211.sh13
2 files changed, 179 insertions, 2 deletions
diff --git a/package/kernel/mac80211/files/lib/netifd/wireless/mac80211.sh b/package/kernel/mac80211/files/lib/netifd/wireless/mac80211.sh
index c98807f3cf..52e58beb51 100644
--- a/package/kernel/mac80211/files/lib/netifd/wireless/mac80211.sh
+++ b/package/kernel/mac80211/files/lib/netifd/wireless/mac80211.sh
@@ -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
diff --git a/package/kernel/mac80211/files/lib/wifi/mac80211.sh b/package/kernel/mac80211/files/lib/wifi/mac80211.sh
index e33b09abb2..e299ab939f 100644
--- a/package/kernel/mac80211/files/lib/wifi/mac80211.sh
+++ b/package/kernel/mac80211/files/lib/wifi/mac80211.sh
@@ -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/}"