Re: Watch out for 850Mbit/s WiFi

Haha this is awesome and insane. Are we really gonna go from 20 Mbps to 850 Mbps+ so quickly? I still need to get used to 130 Mbps!

Jonathan Vasquez
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-------- Original Message --------
On 4/10/25 21:44, Adrian Chadd  wrote:

> NIIIIIIIICEEEEEEEEEEEEEEEE
>
> :-)
>
> -adrian
>
> On Thu, 10 Apr 2025 at 18:43, Bjoern A. Zeeb <bz@freebsd.org> wrote:
>
>> Hi,
>>
>> I had a bit of fun tonight after all and figured out what prevented me
>> from enabling VHT80P80 and VHT160 since January for testing. Patches
>> to come to review tomorrow (well that is today here). Turns out I cannot
>> test VHT80P80 currently.
>>
>> This is likely the first VHT/160 assoc on FreeBSD so I thought I'd send
>> the email.
>>
>> And I ran the simple silly iperf3 test.
>> Not much more than VHT80 but I am also sure I am starting to hit other
>> limits in this test setup. It goes from the AX210 in a bhyve instance
>> to AP to a small 4 port switch and back into em0 on the same laptop
>> just the base system running the iperf3 server.
>>
>> Down there is UDP TX from the wifi set to 960Mbit/s target rate.
>> Don't expect that with single stream TCP. Yet another thing to debug ;)
>>
>> Keep in mind we are still copying the full frame incl. data from
>> skb to mbuf or vice versa depending on direction and other fun bits
>> to optimize one day. I guess I'll try to find an AP supporting 11BE
>> and SFP+ for 10G DAC or fiber for christmas this year... until then it'll
>> be other things to get us stable first.
>>
>> Try it our yourself please -- even with VHT80!
>>
>> Lots of joy
>> Bjoern
>>
>> # ifconfig -v wlan0
>> wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>> options=0
>> ether 74:13:ea:6e:de:c1
>> inet6 fe80::7613:eaff:fe6e:dec1%wlan0 prefixlen 64 scopeid 0x3
>> inet6 ....
>> groups: wlan
>> ssid abc123 channel 40 (5200 MHz 11a vht/160) bssid 9a:9d:7e:76:6f:fa
>> regdomain ETSI country DE anywhere -ecm authmode WPA2/802.11i -wps
>> -tsn privacy ON deftxkey UNDEF
>> AES-CCM 2:128-bit
>> powersavemode OFF powersavesleep 100 txpower 22 txpowmax 50.0 -dotd
>> rtsthreshold 2346 fragthreshold 2346 bmiss 7
>> 11a ucast NONE mgmt 6 Mb/s mcast 6 Mb/s maxretry 6
>> 11b ucast NONE mgmt 1 Mb/s mcast 1 Mb/s maxretry 6
>> 11g ucast NONE mgmt 1 Mb/s mcast 1 Mb/s maxretry 6
>> 11na ucast NONE mgmt 6 Mb/s mcast 6 Mb/s maxretry 6
>> 11ng ucast NONE mgmt 1 Mb/s mcast 1 Mb/s maxretry 6
>> 11ac ucast NONE mgmt 6 Mb/s mcast 6 Mb/s maxretry 6
>> scanvalid 60 -bgscan bgscanintvl 300 bgscanidle 250
>> roam:11a rssi 7dBm rate 12 Mb/s
>> roam:11b rssi 7dBm rate 1 Mb/s
>> roam:11g rssi 7dBm rate 5 Mb/s
>> roam:11na rssi 7dBm MCS 1
>> roam:11ng rssi 7dBm MCS 1
>> roam:11ac rssi 7dBm MCS 1
>> -pureg protmode CTS ht htcompat -ampdutx ampdurx ampdulimit 64k
>> ampdudensity NA -amsdutx amsdurx shortgi htprotmode RTSCTS -puren
>> -smps -rifs stbc -ldpctx ldpcrx -uapsd vht vht40 vht80 vht160
>> -vht80p80 wme -burst -dwds roaming MANUAL bintval 100
>> AC_BE cwmin 4 cwmax 10 aifs 3 txopLimit 0 -acm ack
>> cwmin 0 cwmax 0 aifs 0 txopLimit 0 -acm
>> AC_BK cwmin 4 cwmax 10 aifs 7 txopLimit 0 -acm ack
>> cwmin 4 cwmax 10 aifs 7 txopLimit 0 -acm
>> AC_VI cwmin 3 cwmax 4 aifs 2 txopLimit 94 -acm ack
>> cwmin 0 cwmax 0 aifs 0 txopLimit 0 -acm
>> AC_VO cwmin 2 cwmax 3 aifs 2 txopLimit 47 -acm ack
>> cwmin 0 cwmax 0 aifs 0 txopLimit 0 -acm
>> parent interface: iwlwifi0
>> media: IEEE 802.11 Wireless Ethernet VHT mode 11ac
>> status: associated
>> nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
>> drivername: wlan0
>>
>> # sysctl compat.linuxkpi.80211.wlan0
>> compat.linuxkpi.80211.wlan0.dump_stas:
>> lsta 0xfffff800019b6800 sta 0xfffff800019b68c0 added_to_drv 1
>> nl80211_sta_info (valid fields) 0x00004001<BEACON_RX,TX_BITRATE>
>> connected_time 0 inactive_time 0
>> rx_bytes 0 rx_packets 0 rx_dropped_misc 0
>> rx_duration 0 rx_beacon 0 rx_beacon_signal_avg 0
>> tx_bytes 0 tx_packets 0 tx_failed 0
>> tx_duration 0 tx_retries 0
>> signal 0 signal_avg 0 ack_signal 0 avg_ack_signal 0
>> generation 0 assoc_req_ies_len 0 chains 0
>> rxrate: flags 0 bw 0(20) legacy 0 kbit/s mcs 0 nss 0
>> he_dcm 0 he_gi 0 he_ru_alloc 0 eht_gi 0
>> txrate: flags 6<VHT_MCS,SGI> bw 5(160) legacy 0 kbit/s mcs 9 nss 2
>> he_dcm 0 he_gi 0 he_ru_alloc 0 eht_gi 0
>>
>> Server output:
>> -----------------------------------------------------------
>> Server listening on 5201 (test #18)
>> -----------------------------------------------------------
>> Accepted connection from fe80::7613:eaff:fe6e:dec1, port 59751
>> [ 5] local fe80::c665:16ff:fef0:5da port 5201 connected to fe80::7613:eaff:fe6e:dec1 port 43081
>> [ ID] Interval Transfer Bitrate Jitter Lost/Total Datagrams
>> [ 5] 0.00-1.00 sec 101 MBytes 844 Mbits/sec 0.018 ms 0/73529 (0%)
>> [ 5] 1.00-2.00 sec 103 MBytes 866 Mbits/sec 0.017 ms 223/75199 (0.3%)
>> [ 5] 2.00-3.00 sec 104 MBytes 870 Mbits/sec 0.023 ms 0/75572 (0%)
>> [ 5] 3.00-4.00 sec 104 MBytes 868 Mbits/sec 0.023 ms 0/75515 (0%)
>> [ 5] 4.00-5.00 sec 103 MBytes 868 Mbits/sec 0.018 ms 0/75137 (0%)
>> [ 5] 5.00-6.00 sec 102 MBytes 855 Mbits/sec 0.018 ms 214/74521 (0.29%)
>> [ 5] 6.00-7.00 sec 104 MBytes 867 Mbits/sec 0.015 ms 0/75371 (0%)
>> [ 5] 7.00-8.00 sec 103 MBytes 867 Mbits/sec 0.016 ms 0/75074 (0%)
>> [ 5] 8.00-9.00 sec 104 MBytes 867 Mbits/sec 0.020 ms 0/75475 (0%)
>> [ 5] 9.00-10.00 sec 103 MBytes 867 Mbits/sec 0.017 ms 0/75057 (0%)
>> [ 5] 10.00-11.00 sec 102 MBytes 855 Mbits/sec 0.025 ms 0/74420 (0%)
>> [ 5] 11.00-11.10 sec 9.94 MBytes 863 Mbits/sec 0.016 ms 0/7242 (0%)
>> - - - - - - - - - - - - - - - - - - - - - - - - -
>> [ ID] Interval Transfer Bitrate Jitter Lost/Total Datagrams
>> [ 5] 0.00-11.10 sec 1.12 GBytes 863 Mbits/sec 0.016 ms 437/832112 (0.053%) receiver
>>
>> --
>> Bjoern A. Zeeb r15:7