How OpenWrt Vanquishes Bufferbloat

[richb-hanover-priv]

I am coming to understand that what I'm asking for is an algorithm for this pre-purchase situation:

• I hear about a new "Router XYZ". It sounds cool.
• I look it up in the Table of Hardware (ToH) and see that it works with OpenWrt
• I see that the ToH page has a "WLAN Hardware" entry that lists one or more chipset/part numbers. (Or I see on a website that the router has such-and-such chipset.)
• I want to know whether the "OpenWrt Wi-Fi Driver" supports this chipset.

If the "OpenWrt Wi-Fi Driver" doesn't support the wireless chipset, I won't purchase because it makes so much difference to the performance of the router.

How could that list assure me that Router XYZ will support all the "OpenWrt Wi-Fi Goodness" (separate queues, ATF, AQL)? Thanks.

[Spacebar]

I understand. And that is a very good question, and would be very helpful for people.

[slh]

Quick rule of thumb:

• ipq40xx: ath10k
• ipq806x: ath10k
• ipq50xx: ath11k
• ipq60xx: ath11k
• ipq807x: ath11k
• ipq53xx: ath12k
• ipq955x: ath12k
• ipq957x: ath12k
• mt7621: mt76
• mt7622: mt76
• mt7623: mt76
• filogic 820 (MT7981B): mt76
• filogic 830 (MT7986AV): mt76
• filogic 880 (MT7988): mt76

[richb-hanover-priv]

Thanks for the cheat sheet. But what about the MediaTek MT7976CN that's apparently used in the GL-MT3000 and MT7976GN 4T4R & MT7976AN 4T4R from the GL-MT6000?

How could a newcomer possibly figure all this out? (I'm not upset, but asking naive questions...) Thanks again

Update: and what about Qualcomm QCN5024, 2x Qualcomm QCN5054 from the Linksys MX4200? Where does that fit in the taxonomy of Wi-Fi chipsets?

[slh]

I was concentrating on the SOC here (because those are normally easier to identify, which 'usually' comes with the corresponding wireless chipsets of the era). That's also the reason for this being a rule of thumb, as especially RaLink/ Mediatek SOCs often get retrofitted with newer wireless chipsets (e.g. mt7621a with mt7915 with DBDC, but we also see a third IoT radio (low-end 1x1 ath10k) on ipq8071a with the Xiaomi ax3600), for the bufferbloat question this doesn't matter much (as those are still mt76, respectively ath10k), for the performance it obviously does matter.

MT7976AN is a 4x4 802.11ax/ wifi6 chipset using mt76 (2.4 or 5 GHz).

QCN5024 is a 4x4 2.4 GHz 802.11ax/ wifi6 chipset using ath11k.
QCN5054 is a 4x4 5 GHz 802.11ax/ wifi6 chipset using ath11k.
QCN9074 is a 4x4 2.4/5/6 GHz 802.11axe/ wifi6e chipset using ath11k.

[dudez7]

@slh

but we also see a third IoT radio (low-end 1x1 ath10k) on ipq8071a with the Xiaomi ax3600),

Hi slh, I can chip in more "iw list" info about another beast ToH:Xiaomi Mi AIoT Router AX3600 -

root@OpenWrt_DumbAP_AX3600:~# iw list
Wiphy phy2
        wiphy index: 2
        max # scan SSIDs: 16
        max scan IEs length: 152 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.
        Available Antennas: TX 0x3 RX 0x3
        Configured Antennas: TX 0x3 RX 0x3
        Supported interface modes:
                 * managed
                 * AP
                 * monitor
                 * mesh point

       ......truncated..............
     
      Supported extended features:
                * [ RRM ]: RRM
                * [ SET_SCAN_DWELL ]: scan dwell setting
                * [ FILS_STA ]: STA FILS (Fast Initial Link Setup)
                * [ CQM_RSSI_LIST ]: multiple CQM_RSSI_THOLD records
                * [ CONTROL_PORT_OVER_NL80211 ]: control port over nl80211
                * [ ACK_SIGNAL_SUPPORT ]: ack signal level support
                * [ TXQS ]: FQ-CoDel-enabled intermediate TXQs
                * [ ENABLE_FTM_RESPONDER ]: enable FTM (Fine Time Measurement) responder
                * [ STA_TX_PWR ]: TX power control per station
                * [ CONTROL_PORT_NO_PREAUTH ]: disable pre-auth over nl80211 control port support
                * [ SCAN_FREQ_KHZ ]: scan on kHz frequency support
                * [ CONTROL_PORT_OVER_NL80211_TX_STATUS ]: tx status for nl80211 control port support
                * [ BSS_COLOR ]: BSS coloring support
Wiphy phy1
        wiphy index: 1
        max # scan SSIDs: 16
        max scan IEs length: 142 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.
        Available Antennas: TX 0xf0 RX 0xf0
        Configured Antennas: TX 0xf0 RX 0xf0
        Supported interface modes:
                 * managed
                 * AP
                 * monitor
                 * mesh point
   
        ......truncated.............. 

        Supported extended features:
                * [ RRM ]: RRM
                * [ SET_SCAN_DWELL ]: scan dwell setting
                * [ FILS_STA ]: STA FILS (Fast Initial Link Setup)
                * [ CQM_RSSI_LIST ]: multiple CQM_RSSI_THOLD records
                * [ CONTROL_PORT_OVER_NL80211 ]: control port over nl80211
                * [ ACK_SIGNAL_SUPPORT ]: ack signal level support
                * [ TXQS ]: FQ-CoDel-enabled intermediate TXQs
                * [ ENABLE_FTM_RESPONDER ]: enable FTM (Fine Time Measurement) responder
                * [ STA_TX_PWR ]: TX power control per station
                * [ CONTROL_PORT_NO_PREAUTH ]: disable pre-auth over nl80211 control port support
                * [ SCAN_FREQ_KHZ ]: scan on kHz frequency support
                * [ CONTROL_PORT_OVER_NL80211_TX_STATUS ]: tx status for nl80211 control port support
                * [ BSS_COLOR ]: BSS coloring support
Wiphy phy0
        wiphy index: 0
        max # scan SSIDs: 16
        max scan IEs length: 195 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.
        Available Antennas: TX 0x1 RX 0x1
        Configured Antennas: TX 0x1 RX 0x1
        Supported interface modes:
                 * IBSS
                 * managed
                 * AP
                 * AP/VLAN
                 * monitor
                 * mesh point
                 * P2P-client
                 * P2P-GO
                 * P2P-device
      ......truncated..............
       
        Supported extended features:
                * [ VHT_IBSS ]: VHT-IBSS
                * [ RRM ]: RRM
                * [ SET_SCAN_DWELL ]: scan dwell setting
                * [ 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)
                * [ 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
root@OpenWrt_DumbAP_AX3600:~#

It seems that only the low end QCA9887 IoT phy0 (radio0) has full capabilities of:
* [ TXQS ]: FQ-CoDel-enabled intermediate TXQs
* [ AIRTIME_FAIRNESS ]: airtime fairness scheduling
* [ AQL ]: Airtime Queue Limits (AQL)

But both IPQ8074 phy1 (radio1) & phy2 (radio2) only has "[ TXQS ]: FQ-CoDel-enabled intermediate TXQs" capability....

Could it be due to the limitation of IPQ8074 or something more is missing there?

++ @nbd for the above query, thanks

[FanOfOpenWRT]

For GL-iNet MT3000, I ran iw list and note that it includes:

* [ TXQS ]: FQ-CoDel-enabled intermediate TXQs
* [ AIRTIME_FAIRNESS ]: airtime fairness scheduling
* [ AQL ]: Airtime Queue Limits (AQL)

Here is cat /sys/kernel/debug/ieee80211/phy0/aql_txq_limit:

root@OpenWrt:~# cat /sys/kernel/debug/ieee80211/phy0/aql_txq_limit
AC      AQL limit low   AQL limit high
VO      5000            12000
VI      5000            12000
BE      5000            12000
BK      5000            12000
BC/MC   50000

Here is iw list:

root@OpenWrt:~# iw list
Wiphy phy1
        wiphy index: 1
        max # scan SSIDs: 4
        max scan IEs length: 2190 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: 0x9ff
                        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: 7935 bytes
                        No DSSS/CCK HT40
                Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
                Minimum RX AMPDU time spacing: 2 usec (0x04)
                HT TX/RX MCS rate indexes supported: 0-15
                VHT Capabilities (0x339a59f6):
                        Max MPDU length: 11454
                        Supported Channel Width: 160 MHz
                        RX LDPC
                        short GI (80 MHz)
                        short GI (160/80+80 MHz)
                        TX STBC
                        SU Beamformer
                        SU Beamformee
                        MU Beamformer
                        MU Beamformee
                        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
                VHT extended NSS: supported
                HE Iftypes: managed
                        HE MAC Capabilities (0x08011a000040):
                                +HTC HE Supported
                                Trigger Frame MAC Padding Duration: 2
                                OM Control
                                Maximum A-MPDU Length Exponent: 3
                                A-MSDU in A-MPDU
                        HE PHY Capabilities: (0x4c70ce126d00f3164e3f00):
                                HE40/HE80/5GHz
                                HE160/5GHz
                                242 tone RUs/5GHz
                                Device Class: 1
                                LDPC Coding in Payload
                                HE SU PPDU with 1x HE-LTF and 0.8us GI
                                NDP with 4x HE-LTF and 3.2us GI
                                STBC Tx <= 80MHz
                                STBC Rx <= 80MHz
                                Full Bandwidth UL MU-MIMO
                                Partial Bandwidth UL MU-MIMO
                                DCM Max Constellation: 2
                                DCM Max Constellation Rx: 2
                                SU Beamformee
                                Beamformee STS <= 80Mhz: 3
                                Beamformee STS > 80Mhz: 3
                                Codebook Size SU Feedback
                                Codebook Size MU Feedback
                                Triggered CQI Feedback
                                Partial Bandwidth Extended Range
                                Partial Bandwidth DL MU-MIMO
                                PPE Threshold Present
                                Power Boost Factor ar
                                HE SU PPDU & HE PPDU 4x HE-LTF 0.8us GI
                                Max NC: 2
                                20MHz in 40MHz HE PPDU 2.4GHz
                                20MHz in 160/80+80MHz HE PPDU
                                80MHz in 160/80+80MHz HE PPDU
                                DCM Max BW: 1
                                Longer Than 16HE SIG-B OFDM Symbols
                                Non-Triggered CQI Feedback
                                TX 1024-QAM
                                RX 1024-QAM
                                RX Full BW SU Using HE MU PPDU with Compression SIGB
                                RX Full BW SU Using HE MU PPDU with Non-Compression SIGB
                        HE RX MCS and NSS set <= 80 MHz
                                1 streams: MCS 0-11
                                2 streams: MCS 0-11
                                3 streams: not supported
                                4 streams: not supported
                                5 streams: not supported
                                6 streams: not supported
                                7 streams: not supported
                                8 streams: not supported
                        HE TX MCS and NSS set <= 80 MHz
                                1 streams: MCS 0-11
                                2 streams: MCS 0-11
                                3 streams: not supported
                                4 streams: not supported
                                5 streams: not supported
                                6 streams: not supported
                                7 streams: not supported
                                8 streams: not supported
                        HE RX MCS and NSS set 160 MHz
                                1 streams: MCS 0-11
                                2 streams: MCS 0-11
                                3 streams: not supported
                                4 streams: not supported
                                5 streams: not supported
                                6 streams: not supported
                                7 streams: not supported
                                8 streams: not supported
                        HE TX MCS and NSS set 160 MHz
                                1 streams: MCS 0-11
                                2 streams: MCS 0-11
                                3 streams: not supported
                                4 streams: not supported
                                5 streams: not supported
                                6 streams: not supported
                                7 streams: not supported
                                8 streams: not supported
                        PPE Threshold 0x39 0x1c 0xc7 0x71 0x1c 0x07
                EHT Iftypes: managed
                        EHT MAC Capabilities (0x0000):
                        EHT PHY Capabilities: (0x0000000000000000):
                        EHT MCS/NSS: (0x):
                        EHT bw <= 80 MHz, max NSS for MCS 8-9: Rx=0, Tx=0
                        EHT bw <= 80 MHz, max NSS for MCS 10-11: Rx=0, Tx=0
                        EHT bw <= 80 MHz, max NSS for MCS 12-13: Rx=0, Tx=0
                        EHT bw=160 MHz, max NSS for MCS 8-9: Rx=0, Tx=0
                        EHT bw=160 MHz, max NSS for MCS 10-11: Rx=0, Tx=0
                        EHT bw=160 MHz, max NSS for MCS 12-13: Rx=0, Tx=0
                HE Iftypes: AP
                        HE MAC Capabilities (0x00051a081044):
                                +HTC HE Supported
                                TWT Responder
                                BSR
                                OM Control
                                Maximum A-MPDU Length Exponent: 3
                                BQR
                                A-MSDU in A-MPDU
                                OM Control UL MU Data Disable RX
                        HE PHY Capabilities: (0x0c20ce126d00a310000c00):
                                HE40/HE80/5GHz
                                HE160/5GHz
                                LDPC Coding in Payload
                                NDP with 4x HE-LTF and 3.2us GI
                                STBC Tx <= 80MHz
                                STBC Rx <= 80MHz
                                Full Bandwidth UL MU-MIMO
                                Partial Bandwidth UL MU-MIMO
                                DCM Max Constellation: 2
                                DCM Max Constellation Rx: 2
                                SU Beamformee
                                Beamformee STS <= 80Mhz: 3
                                Beamformee STS > 80Mhz: 3
                                Codebook Size SU Feedback
                                Codebook Size MU Feedback
                                Partial Bandwidth Extended Range
                                PPE Threshold Present
                                Max NC: 2
                                TX 1024-QAM
                                RX 1024-QAM
                        HE RX MCS and NSS set <= 80 MHz
                                1 streams: MCS 0-11
                                2 streams: MCS 0-11
                                3 streams: not supported
                                4 streams: not supported
                                5 streams: not supported
                                6 streams: not supported
                                7 streams: not supported
                                8 streams: not supported
                        HE TX MCS and NSS set <= 80 MHz
                                1 streams: MCS 0-11
                                2 streams: MCS 0-11
                                3 streams: not supported
                                4 streams: not supported
                                5 streams: not supported
                                6 streams: not supported
                                7 streams: not supported
                                8 streams: not supported
                        HE RX MCS and NSS set 160 MHz
                                1 streams: MCS 0-11
                                2 streams: MCS 0-11
                                3 streams: not supported
                                4 streams: not supported
                                5 streams: not supported
                                6 streams: not supported
                                7 streams: not supported
                                8 streams: not supported
                        HE TX MCS and NSS set 160 MHz
                                1 streams: MCS 0-11
                                2 streams: MCS 0-11
                                3 streams: not supported
                                4 streams: not supported
                                5 streams: not supported
                                6 streams: not supported
                                7 streams: not supported
                                8 streams: not supported
                        PPE Threshold 0x39 0x1c 0xc7 0x71 0x1c 0x07
                EHT Iftypes: AP
                        EHT MAC Capabilities (0x0000):
                        EHT PHY Capabilities: (0x0000000000000000):
                        EHT MCS/NSS: (0x):
                        EHT bw <= 80 MHz, max NSS for MCS 8-9: Rx=0, Tx=0
                        EHT bw <= 80 MHz, max NSS for MCS 10-11: Rx=0, Tx=0
                        EHT bw <= 80 MHz, max NSS for MCS 12-13: Rx=0, Tx=0
                        EHT bw=160 MHz, max NSS for MCS 8-9: Rx=0, Tx=0
                        EHT bw=160 MHz, max NSS for MCS 10-11: Rx=0, Tx=0
                        EHT bw=160 MHz, max NSS for MCS 12-13: Rx=0, Tx=0
                HE Iftypes: mesh point
                        HE MAC Capabilities (0x00011a000040):
                                +HTC HE Supported
                                OM Control
                                Maximum A-MPDU Length Exponent: 3
                                A-MSDU in A-MPDU
                        HE PHY Capabilities: (0x0c200c0000000000008000):
                                HE40/HE80/5GHz
                                HE160/5GHz
                                LDPC Coding in Payload
                                STBC Tx <= 80MHz
                                STBC Rx <= 80MHz
                        HE RX MCS and NSS set <= 80 MHz
                                1 streams: MCS 0-11
                                2 streams: MCS 0-11
                                3 streams: not supported
                                4 streams: not supported
                                5 streams: not supported
                                6 streams: not supported
                                7 streams: not supported
                                8 streams: not supported
                        HE TX MCS and NSS set <= 80 MHz
                                1 streams: MCS 0-11
                                2 streams: MCS 0-11
                                3 streams: not supported
                                4 streams: not supported
                                5 streams: not supported
                                6 streams: not supported
                                7 streams: not supported
                                8 streams: not supported
                        HE RX MCS and NSS set 160 MHz
                                1 streams: MCS 0-11
                                2 streams: MCS 0-11
                                3 streams: not supported
                                4 streams: not supported
                                5 streams: not supported
                                6 streams: not supported
                                7 streams: not supported
                                8 streams: not supported
                        HE TX MCS and NSS set 160 MHz
                                1 streams: MCS 0-11
                                2 streams: MCS 0-11
                                3 streams: not supported
                                4 streams: not supported
                                5 streams: not supported
                                6 streams: not supported
                                7 streams: not supported
                                8 streams: not supported
                EHT Iftypes: mesh point
                        EHT MAC Capabilities (0x0000):
                        EHT PHY Capabilities: (0x0000000000000000):
                        EHT MCS/NSS: (0x):
                        EHT bw <= 80 MHz, max NSS for MCS 8-9: Rx=0, Tx=0
                        EHT bw <= 80 MHz, max NSS for MCS 10-11: Rx=0, Tx=0
                        EHT bw <= 80 MHz, max NSS for MCS 12-13: Rx=0, Tx=0
                        EHT bw=160 MHz, max NSS for MCS 8-9: Rx=0, Tx=0
                        EHT bw=160 MHz, max NSS for MCS 10-11: Rx=0, Tx=0
                        EHT bw=160 MHz, max NSS for MCS 12-13: Rx=0, Tx=0
                [...]
        valid interface combinations:
                 * #{ IBSS } <= 1, #{ AP, mesh point } <= 16, #{ managed } <= 19,
                   total <= 19, #channels <= 1, STA/AP BI must match, radar detect widths: { 20 MHz (no HT), 20 MHz, 40 MHz, 80 MHz, 160 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
                * [ BEACON_RATE_LEGACY ]: legacy beacon rate setting
                * [ BEACON_RATE_HT ]: HT beacon rate setting
                * [ BEACON_RATE_VHT ]: VHT beacon rate setting
                * [ FILS_STA ]: STA FILS (Fast Initial Link Setup)
                * [ CQM_RSSI_LIST ]: multiple CQM_RSSI_THOLD records
                * [ CONTROL_PORT_OVER_NL80211 ]: control port over nl80211
                * [ ACK_SIGNAL_SUPPORT ]: ack signal level support
                * [ TXQS ]: FQ-CoDel-enabled intermediate TXQs
                * [ SCAN_RANDOM_SN ]: use random sequence numbers in scans
                * [ SCAN_MIN_PREQ_CONTENT ]: use probe request with only rate IEs in scans
                * [ CAN_REPLACE_PTK0 ]: can safely replace PTK 0 when rekeying
                * [ AIRTIME_FAIRNESS ]: airtime fairness scheduling
                * [ STA_TX_PWR ]: TX power control per station
                * [ AQL ]: Airtime Queue Limits (AQL)
                * [ 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
                * [ FILS_DISCOVERY ]: FILS discovery frame transmission support
                * [ UNSOL_BCAST_PROBE_RESP ]: unsolicated broadcast probe response transmission support
                * [ BEACON_RATE_HE ]: HE beacon rate support (AP/mesh)
                * [ BSS_COLOR ]: BSS coloring support
                * [ RADAR_BACKGROUND ]: Radar background support
Wiphy phy0
        wiphy index: 0
        max # scan SSIDs: 4
        max scan IEs length: 2200 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 1:
                Capabilities: 0x9ff
                        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: 7935 bytes
                        No DSSS/CCK HT40
                Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
                Minimum RX AMPDU time spacing: 2 usec (0x04)
                HT TX/RX MCS rate indexes supported: 0-15
                HE Iftypes: managed
                        HE MAC Capabilities (0x08011a000040):
                                +HTC HE Supported
                                Trigger Frame MAC Padding Duration: 2
                                OM Control
                                Maximum A-MPDU Length Exponent: 3
                                A-MSDU in A-MPDU
                        HE PHY Capabilities: (0x2270ce126d00f30e4e3f00):
                                HE40/2.4GHz
                                242 tone RUs/2.4GHz
                                Device Class: 1
                                LDPC Coding in Payload
                                HE SU PPDU with 1x HE-LTF and 0.8us GI
                                NDP with 4x HE-LTF and 3.2us GI
                                STBC Tx <= 80MHz
                                STBC Rx <= 80MHz
                                Full Bandwidth UL MU-MIMO
                                Partial Bandwidth UL MU-MIMO
                                DCM Max Constellation: 2
                                DCM Max Constellation Rx: 2
                                SU Beamformee
                                Beamformee STS <= 80Mhz: 3
                                Beamformee STS > 80Mhz: 3
                                Codebook Size SU Feedback
                                Codebook Size MU Feedback
                                Triggered CQI Feedback
                                Partial Bandwidth Extended Range
                                Partial Bandwidth DL MU-MIMO
                                PPE Threshold Present
                                Power Boost Factor ar
                                HE SU PPDU & HE PPDU 4x HE-LTF 0.8us GI
                                Max NC: 1
                                20MHz in 40MHz HE PPDU 2.4GHz
                                20MHz in 160/80+80MHz HE PPDU
                                80MHz in 160/80+80MHz HE PPDU
                                DCM Max BW: 1
                                Longer Than 16HE SIG-B OFDM Symbols
                                Non-Triggered CQI Feedback
                                TX 1024-QAM
                                RX 1024-QAM
                                RX Full BW SU Using HE MU PPDU with Compression SIGB
                                RX Full BW SU Using HE MU PPDU with Non-Compression SIGB
                        HE RX MCS and NSS set <= 80 MHz
                                1 streams: MCS 0-11
                                2 streams: MCS 0-11
                                3 streams: not supported
                                4 streams: not supported
                                5 streams: not supported
                                6 streams: not supported
                                7 streams: not supported
                                8 streams: not supported
                        HE TX MCS and NSS set <= 80 MHz
                                1 streams: MCS 0-11
                                2 streams: MCS 0-11
                                3 streams: not supported
                                4 streams: not supported
                                5 streams: not supported
                                6 streams: not supported
                                7 streams: not supported
                                8 streams: not supported
                        PPE Threshold 0x39 0x1c 0xc7 0x71 0x1c 0x07
                EHT Iftypes: managed
                        EHT MAC Capabilities (0x0000):
                        EHT PHY Capabilities: (0x0000000000000000):
                        EHT MCS/NSS: (0x):
                        EHT bw=20 MHz, max NSS for MCS 0-7: Rx=0, Tx=0
                        EHT bw=20 MHz, max NSS for MCS 8-9: Rx=0, Tx=0
                        EHT bw=20 MHz, max NSS for MCS 10-11: Rx=0, Tx=0
                        EHT bw=20 MHz, max NSS for MCS 12-13: Rx=0, Tx=0
                HE Iftypes: AP
                        HE MAC Capabilities (0x00051a081044):
                                +HTC HE Supported
                                TWT Responder
                                BSR
                                OM Control
                                Maximum A-MPDU Length Exponent: 3
                                BQR
                                A-MSDU in A-MPDU
                                OM Control UL MU Data Disable RX
                        HE PHY Capabilities: (0x0220ce126d00a308000c00):
                                HE40/2.4GHz
                                LDPC Coding in Payload
                                NDP with 4x HE-LTF and 3.2us GI
                                STBC Tx <= 80MHz
                                STBC Rx <= 80MHz
                                Full Bandwidth UL MU-MIMO
                                Partial Bandwidth UL MU-MIMO
                                DCM Max Constellation: 2
                                DCM Max Constellation Rx: 2
                                SU Beamformee
                                Beamformee STS <= 80Mhz: 3
                                Beamformee STS > 80Mhz: 3
                                Codebook Size SU Feedback
                                Codebook Size MU Feedback
                                Partial Bandwidth Extended Range
                                PPE Threshold Present
                                Max NC: 1
                                TX 1024-QAM
                                RX 1024-QAM
                        HE RX MCS and NSS set <= 80 MHz
                                1 streams: MCS 0-11
                                2 streams: MCS 0-11
                                3 streams: not supported
                                4 streams: not supported
                                5 streams: not supported
                                6 streams: not supported
                                7 streams: not supported
                                8 streams: not supported
                        HE TX MCS and NSS set <= 80 MHz
                                1 streams: MCS 0-11
                                2 streams: MCS 0-11
                                3 streams: not supported
                                4 streams: not supported
                                5 streams: not supported
                                6 streams: not supported
                                7 streams: not supported
                                8 streams: not supported
                        PPE Threshold 0x39 0x1c 0xc7 0x71 0x1c 0x07
                EHT Iftypes: AP
                        EHT MAC Capabilities (0x0000):
                        EHT PHY Capabilities: (0x0000000000000000):
                        EHT MCS/NSS: (0x):
                        EHT bw=20 MHz, max NSS for MCS 0-7: Rx=0, Tx=0
                        EHT bw=20 MHz, max NSS for MCS 8-9: Rx=0, Tx=0
                        EHT bw=20 MHz, max NSS for MCS 10-11: Rx=0, Tx=0
                        EHT bw=20 MHz, max NSS for MCS 12-13: Rx=0, Tx=0
                HE Iftypes: mesh point
                        HE MAC Capabilities (0x00011a000040):
                                +HTC HE Supported
                                OM Control
                                Maximum A-MPDU Length Exponent: 3
                                A-MSDU in A-MPDU
                        HE PHY Capabilities: (0x02200c0000000000008000):
                                HE40/2.4GHz
                                LDPC Coding in Payload
                                STBC Tx <= 80MHz
                                STBC Rx <= 80MHz
                        HE RX MCS and NSS set <= 80 MHz
                                1 streams: MCS 0-11
                                2 streams: MCS 0-11
                                3 streams: not supported
                                4 streams: not supported
                                5 streams: not supported
                                6 streams: not supported
                                7 streams: not supported
                                8 streams: not supported
                        HE TX MCS and NSS set <= 80 MHz
                                1 streams: MCS 0-11
                                2 streams: MCS 0-11
                                3 streams: not supported
                                4 streams: not supported
                                5 streams: not supported
                                6 streams: not supported
                                7 streams: not supported
                                8 streams: not supported
                EHT Iftypes: mesh point
                        EHT MAC Capabilities (0x0000):
                        EHT PHY Capabilities: (0x0000000000000000):
                        EHT MCS/NSS: (0x):
                        EHT bw=20 MHz, max NSS for MCS 0-7: Rx=0, Tx=0
                        EHT bw=20 MHz, max NSS for MCS 8-9: Rx=0, Tx=0
                        EHT bw=20 MHz, max NSS for MCS 10-11: Rx=0, Tx=0
                        EHT bw=20 MHz, max NSS for MCS 12-13: Rx=0, Tx=0
                [...]
        valid interface combinations:
                 * #{ IBSS } <= 1, #{ AP, mesh point } <= 16, #{ managed } <= 19,
                   total <= 19, #channels <= 1, STA/AP BI must match, radar detect widths: { 20 MHz (no HT), 20 MHz, 40 MHz, 80 MHz, 160 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
                * [ BEACON_RATE_LEGACY ]: legacy beacon rate setting
                * [ BEACON_RATE_HT ]: HT beacon rate setting
                * [ BEACON_RATE_VHT ]: VHT beacon rate setting
                * [ FILS_STA ]: STA FILS (Fast Initial Link Setup)
                * [ CQM_RSSI_LIST ]: multiple CQM_RSSI_THOLD records
                * [ CONTROL_PORT_OVER_NL80211 ]: control port over nl80211
                * [ ACK_SIGNAL_SUPPORT ]: ack signal level support
                * [ TXQS ]: FQ-CoDel-enabled intermediate TXQs
                * [ SCAN_RANDOM_SN ]: use random sequence numbers in scans
                * [ SCAN_MIN_PREQ_CONTENT ]: use probe request with only rate IEs in scans
                * [ CAN_REPLACE_PTK0 ]: can safely replace PTK 0 when rekeying
                * [ AIRTIME_FAIRNESS ]: airtime fairness scheduling
                * [ STA_TX_PWR ]: TX power control per station
                * [ AQL ]: Airtime Queue Limits (AQL)
                * [ 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
                * [ FILS_DISCOVERY ]: FILS discovery frame transmission support
                * [ UNSOL_BCAST_PROBE_RESP ]: unsolicated broadcast probe response transmission support
                * [ BEACON_RATE_HE ]: HE beacon rate support (AP/mesh)
                * [ BSS_COLOR ]: BSS coloring support
                * [ RADAR_BACKGROUND ]: Radar background support

[FanOfOpenWRT]

@richb-hanover-priv

MediaTek MT7976CN

I found this on the "Filogic 820" that seems not to exist officially, used in the GL-iNet MT3000:

I think the "Filogic 820" branding may actually apply to the combination of the MT7981B SoC and the MT7976C NIC. https://wikidevi.wi-cat.ru/MediaTek seems to have actual detailed specs for these chips. It looks like the MT7981B is what has the ARM Cortex-A53 cores to run Linux, Ethernet, PCIe, and a 2x3:2 radio. The MT7976C is just a NIC with no application processor cores, but it has both a 2.4GHz and 5/6GHz radio. A NIC with two separate radios seems to be a relatively recent development, probably spurred by increased demand for tri-band routers after the opening of the 6GHz band.

[Pouakai]

Coming in from a request on the GL.iNET Flint 2 (GL-MT6000) topic.

GL.iNET Flint 2 (GL-MT6000) discussions

Hello All GL-MT6000 users, Just wonder are you able to chip in queries from How OpenWrt Vanquishes Bufferbloat - #30 by richb-hanover-priv ? Basically need to ssh into the router and run "iw list" to show whether it fully supports wireless's bufferbloat taming features ( TXQS , AIRTIME_FAIRNESS and AQL). Thanks

# iw list | grep 'TXQS\|AIRTIME_FAIRNESS\|AQL'
                 * [ TXQS ]: FQ-CoDel-enabled intermediate TXQs
                * [ AIRTIME_FAIRNESS ]: airtime fairness scheduling
                * [ AQL ]: Airtime Queue Limits (AQL)
                * [ TXQS ]: FQ-CoDel-enabled intermediate TXQs
                * [ AIRTIME_FAIRNESS ]: airtime fairness scheduling
                * [ AQL ]: Airtime Queue Limits (AQL)

[moeller0]

@dudez7

• [ TXQS ]: FQ-CoDel-enabled intermediate TXQs
• [ AIRTIME_FAIRNESS ]: airtime fairness scheduling
• [ AQL ]: Airtime Queue Limits (AQL)

@richb-hanover-priv maybe we should consider adding this information somewhere to the TOH? Would that solve part of the 'challenge' you posted?

[richb-hanover-priv]

I moved this post to a new topic, so the info won't be buried deep in this one. If you know about Wi-Fi chipsets, please see Crowd-sourcing the Wi-Fi Chip info