Unfortunely i need AC rates, but i had a similar thought. Instead of forcing a higher VHT rate assigning a lower maximum VHT rate could be more beneficial.
But no matter what i do i cant set the lower VHT rates. Im about 90% sure commands i entered below are correct, I wonder if its just not supported in the driver level or something. (Xiaomi 4a gigabit, mt7621)
iw dev wlan1 set bitrates vht-mcs-5 2:0-6
iw dev wlan1 set bitrates vht-mcs-5 1:0-6
2 config interface 'loopback'
3 option device 'lo'
4 option proto 'static'
5 option ipaddr '127.0.0.1'
6 option netmask '255.0.0.0'
7
8 config globals 'globals'
9 option packet_steering '1'
10 option ula_prefix 'fd51:646b:6d9d::/48'
11
12 config device
13 option name 'br-lan'
14 option type 'bridge'
15 list ports 'lan1'
16 list ports 'lan2'
17
18 config interface 'lan'
19 option device 'br-lan'
20 option proto 'static'
21 option netmask '255.255.255.0'
22 option ipaddr '192.168.4.1'
23
24 config interface 'wan'
25 option device 'wan'
26 option proto 'pppoe'
27 option username '----------'
28 option password '----------'
29 option ipv6 'auto'
30
31
root@OpenWrt:~# iw phy1 info
Wiphy phy1
wiphy index: 1
max # scan SSIDs: 4
max scan IEs length: 2247 bytes
max # sched scan SSIDs: 0
max # match sets: 0
Retry short limit: 7
Retry long limit: 4
Coverage class: 0 (up to 0m)
Device supports AP-side u-APSD.
Device supports T-DLS.
Available Antennas: TX 0x3 RX 0x3
Configured Antennas: TX 0x3 RX 0x3
Supported interface modes:
* IBSS
* managed
* AP
* AP/VLAN
* monitor
* mesh point
* P2P-client
* P2P-GO
Band 2:
Capabilities: 0x1ff
RX LDPC
HT20/HT40
SM Power Save disabled
RX Greenfield
RX HT20 SGI
RX HT40 SGI
TX STBC
RX STBC 1-stream
Max AMSDU length: 3839 bytes
No DSSS/CCK HT40
Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
Minimum RX AMPDU time spacing: No restriction (0x00)
HT TX/RX MCS rate indexes supported: 0-15
VHT Capabilities (0x318001b0):
Max MPDU length: 3895
Supported Channel Width: neither 160 nor 80+80
RX LDPC
short GI (80 MHz)
TX STBC
RX antenna pattern consistency
TX antenna pattern consistency
VHT RX MCS set:
1 streams: MCS 0-9
2 streams: MCS 0-9
3 streams: not supported
4 streams: not supported
5 streams: not supported
6 streams: not supported
7 streams: not supported
8 streams: not supported
VHT RX highest supported: 0 Mbps
VHT TX MCS set:
1 streams: MCS 0-9
2 streams: MCS 0-9
3 streams: not supported
4 streams: not supported
5 streams: not supported
6 streams: not supported
7 streams: not supported
8 streams: not supported
VHT TX highest supported: 0 Mbps
Frequencies:
* 5180 MHz [36] (23.0 dBm)
* 5200 MHz [40] (23.0 dBm)
* 5220 MHz [44] (23.0 dBm)
* 5240 MHz [48] (23.0 dBm)
* 5260 MHz [52] (23.0 dBm) (radar detection)
* 5280 MHz [56] (23.0 dBm) (radar detection)
* 5300 MHz [60] (23.0 dBm) (radar detection)
* 5320 MHz [64] (23.0 dBm) (radar detection)
* 5500 MHz [100] (23.0 dBm) (radar detection)
* 5520 MHz [104] (23.0 dBm) (radar detection)
* 5540 MHz [108] (23.0 dBm) (radar detection)
* 5560 MHz [112] (23.0 dBm) (radar detection)
* 5580 MHz [116] (23.0 dBm) (radar detection)
* 5600 MHz [120] (23.0 dBm) (radar detection)
* 5620 MHz [124] (23.0 dBm) (radar detection)
* 5640 MHz [128] (23.0 dBm) (radar detection)
* 5660 MHz [132] (23.0 dBm) (radar detection)
* 5680 MHz [136] (23.0 dBm) (radar detection)
* 5700 MHz [140] (23.0 dBm) (radar detection)
* 5720 MHz [144] (23.0 dBm) (radar detection)
* 5745 MHz [149] (23.0 dBm)
* 5765 MHz [153] (23.0 dBm)
* 5785 MHz [157] (23.0 dBm)
* 5805 MHz [161] (23.0 dBm)
* 5825 MHz [165] (23.0 dBm)
* 5845 MHz [169] (23.0 dBm) (no IR)
* 5865 MHz [173] (23.0 dBm) (no IR)
valid interface combinations:
* #{ IBSS } <= 1, #{ managed, AP, mesh point, P2P-client, P2P-GO } <= 8,
total <= 8, #channels <= 1, STA/AP BI must match, radar detect widths: { 20 MHz (no HT), 20 MHz, 40 MHz, 80 MHz }
HT Capability overrides:
* MCS: ff ff ff ff ff ff ff ff ff ff
* maximum A-MSDU length
* supported channel width
* short GI for 40 MHz
* max A-MPDU length exponent
* min MPDU start spacing
max # scan plans: 1
max scan plan interval: -1
max scan plan iterations: 0
Supported extended features:
* [ VHT_IBSS ]: VHT-IBSS
* [ RRM ]: RRM
* [ FILS_STA ]: STA FILS (Fast Initial Link Setup)
* [ CQM_RSSI_LIST ]: multiple CQM_RSSI_THOLD records
* [ CONTROL_PORT_OVER_NL80211 ]: control port over nl80211
* [ TXQS ]: FQ-CoDel-enabled intermediate TXQs
* [ AIRTIME_FAIRNESS ]: airtime fairness scheduling
* [ AQL ]: Airtime Queue Limits (AQL)
* [ SCAN_RANDOM_SN ]: use random sequence numbers in scans
* [ SCAN_MIN_PREQ_CONTENT ]: use probe request with only rate IEs in scans
* [ CONTROL_PORT_NO_PREAUTH ]: disable pre-auth over nl80211 control port support
* [ DEL_IBSS_STA ]: deletion of IBSS station support
* [ SCAN_FREQ_KHZ ]: scan on kHz frequency support
* [ CONTROL_PORT_OVER_NL80211_TX_STATUS ]: tx status for nl80211 control port support