From 38587f87ed27ea0b1db59103a219a6270575f1d3 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Mon, 3 Feb 2014 13:31:44 +0000 Subject: [PATCH] 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 Signed-off-by: Simon Wunderlich [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 SVN-Revision: 39456 --- .../files/lib/netifd/wireless/mac80211.sh | 168 +++++++++++++++++- .../mac80211/files/lib/wifi/mac80211.sh | 13 +- .../hostapd/files/hostapd-full.config | 3 + .../hostapd/files/hostapd-mini.config | 3 + 4 files changed, 185 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 c98807f3cf2b..52e58beb519e 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 e33b09abb2b3..e299ab939fdd 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/}" diff --git a/package/network/services/hostapd/files/hostapd-full.config b/package/network/services/hostapd/files/hostapd-full.config index bc999c04a1e8..e021cd005807 100644 --- a/package/network/services/hostapd/files/hostapd-full.config +++ b/package/network/services/hostapd/files/hostapd-full.config @@ -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. diff --git a/package/network/services/hostapd/files/hostapd-mini.config b/package/network/services/hostapd/files/hostapd-mini.config index 01a04cb237e6..367570993586 100644 --- a/package/network/services/hostapd/files/hostapd-mini.config +++ b/package/network/services/hostapd/files/hostapd-mini.config @@ -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. -- 2.30.2