en:users:wi-fi-alliance-certification
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en:users:wi-fi-alliance-certification [2021/08/11 09:27] Ming Shuo Chiu |
en:users:wi-fi-alliance-certification [2021/08/23 03:36] Ming Shuo Chiu |
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| Given the code quality and stability, it is the goal of GARDENA to develop the rtl8xxxu driver as far as needed to pass the Wi-Fi Alliance certification. | Given the code quality and stability, it is the goal of GARDENA to develop the rtl8xxxu driver as far as needed to pass the Wi-Fi Alliance certification. | ||
| + | A big hurdle is [[https://blog.linuxplumbersconf.org/2016/ocw/system/presentations/4089/original/2016-11-02-rtl8xxxu-presentation.pdf | the lack of sources as well as documentation for the firmware]]. Therefore, digging in the (hard to read) sources of the vendor driver is needed. | ||
| ==== Hardware ==== | ==== Hardware ==== | ||
| * End product: ARMv5, Atmel SAM9G25 based GARDENA smart gateway ([[https://github.com/husqvarnagroup/smart-garden-gateway-public|sources]]) | * End product: ARMv5, Atmel SAM9G25 based GARDENA smart gateway ([[https://github.com/husqvarnagroup/smart-garden-gateway-public|sources]]) | ||
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| == Chris == | == Chris == | ||
| - | * AP: ? | + | * AP: Dlink DIR-612 (2x2) SSID: CHT57196 with BSSID: 18:0f:76:c5:0a:ea |
| * STA: rtl8xxxu running on Edimax EW-7811UN (amd64) | * STA: rtl8xxxu running on Edimax EW-7811UN (amd64) | ||
| - | * Distance: ? | + | * Distance: fixed to 3m and 6m for experiment |
| - | * Environment: ? | + | * Environment: use less-noisy channel 9 in a 8x9 square meters area which only have 1 router. |
| === Baseline === | === Baseline === | ||
| Line 189: | Line 190: | ||
| | amd64, Edimax | Linksys | Linux v5.10.51, rtl8xxxu (vanilla) | 30.6 Mbits/s; 12% | 2m, two monitors in line of sight | Many "ghost MAC addresses" | https://files.reto-schneider.ch/rtl8xxxu/2021-07-23-Testing/2021-07-23-1-Linux-5.10.51-2021-07-22-vanilla-rtl8xxxu-edimax-08:be:ac:0b:14:c4-iperf-tx-tcp-12%25-retries-at-30.6MBps.pcapng.gz | | | amd64, Edimax | Linksys | Linux v5.10.51, rtl8xxxu (vanilla) | 30.6 Mbits/s; 12% | 2m, two monitors in line of sight | Many "ghost MAC addresses" | https://files.reto-schneider.ch/rtl8xxxu/2021-07-23-Testing/2021-07-23-1-Linux-5.10.51-2021-07-22-vanilla-rtl8xxxu-edimax-08:be:ac:0b:14:c4-iperf-tx-tcp-12%25-retries-at-30.6MBps.pcapng.gz | | ||
| | amd64, Edimax | Linksys | Linux v5.10.51, rtl8xxxu (vanilla) | 13.1 Mbits/s; 3% | 2m, two monitors in line of sight | Many "ghost MAC addresses"; unexplained performance/retry drop | https://files.reto-schneider.ch/rtl8xxxu/2021-07-23-Testing/2021-07-23-3-Linux-5.10.51-2021-07-22-vanilla-rtl8xxxu-edimax-08:be:ac:0b:14:c4-iperf-tx-tcp-3%25-retries-at-13.1MBps.pcapng.gz | | | amd64, Edimax | Linksys | Linux v5.10.51, rtl8xxxu (vanilla) | 13.1 Mbits/s; 3% | 2m, two monitors in line of sight | Many "ghost MAC addresses"; unexplained performance/retry drop | https://files.reto-schneider.ch/rtl8xxxu/2021-07-23-Testing/2021-07-23-3-Linux-5.10.51-2021-07-22-vanilla-rtl8xxxu-edimax-08:be:ac:0b:14:c4-iperf-tx-tcp-3%25-retries-at-13.1MBps.pcapng.gz | | ||
| - | | amd64, Edimax | DLink | Linux v5.13.1 rtl8xxxu | 23~27 Mbits/s; 12~14% | 3m, direct line of sight | performance drop for a few seconds | https://mega.nz/folder/LI0ATTAK#0E2J5DHksD1jQi1oJCOJWg | | ||
| - | | amd64, Edimax | DLink | Linux v5.13.1 rtl8xxxu | 7-14 Mbits/s; 16~20% | 6m, direct line of sight | performance drop to 0 sometimes | https://mega.nz/folder/vMdgADRD#XHljNHbzzlp63qqFsT-rkQ | | ||
| | amd64, Edimax | Linksys | Linux v5.10.51, 8192cu (tag rs/2021-07-23) | 4.02 Mbits/s; 17.2% | 2m, two monitors in line of sight | No "ghost MAC addresses"; Surprisingly bad performance | https://files.reto-schneider.ch/rtl8xxxu/2021-07-23-Testing/2021-07-23-5-Linux-5.10.51-2021-07-22-8192cu-edimax-08:be:ac:0b:14:c4-iperf-tx-tcp-16%25-retries-at-4.02MBps.pcapng.gz | | | amd64, Edimax | Linksys | Linux v5.10.51, 8192cu (tag rs/2021-07-23) | 4.02 Mbits/s; 17.2% | 2m, two monitors in line of sight | No "ghost MAC addresses"; Surprisingly bad performance | https://files.reto-schneider.ch/rtl8xxxu/2021-07-23-Testing/2021-07-23-5-Linux-5.10.51-2021-07-22-8192cu-edimax-08:be:ac:0b:14:c4-iperf-tx-tcp-16%25-retries-at-4.02MBps.pcapng.gz | | ||
| | amd64, Edimax | Linksys | Linux v5.10.51, 8192cu (tag rs/2021-07-23) | 3.91 Mbits/s; 18.8% | 2m, two monitors in line of sight | No "ghost MAC addresses"; Surprisingly bad performance | https://files.reto-schneider.ch/rtl8xxxu/2021-07-23-Testing/2021-07-23-6-Linux-5.10.51-2021-07-22-8192cu-edimax-08:be:ac:0b:14:c4-iperf-tx-tcp-18%25-retries-at-3.91MBps.pcapng.gz | | | amd64, Edimax | Linksys | Linux v5.10.51, 8192cu (tag rs/2021-07-23) | 3.91 Mbits/s; 18.8% | 2m, two monitors in line of sight | No "ghost MAC addresses"; Surprisingly bad performance | https://files.reto-schneider.ch/rtl8xxxu/2021-07-23-Testing/2021-07-23-6-Linux-5.10.51-2021-07-22-8192cu-edimax-08:be:ac:0b:14:c4-iperf-tx-tcp-18%25-retries-at-3.91MBps.pcapng.gz | | ||
| | amd64, Edimax | Linksys | Linux v5.10.51, 8192cu (tag rs/2021-07-23) | 49.7 Mbits/s; 4.8% | 1m, direct line of sight | Some "ghost MAC addresses" | https://files.reto-schneider.ch/rtl8xxxu/2021-07-23-Testing/2021-07-23-8-Linux-5.10.51-2021-07-22-8192cu-edimax-08:be:ac:0b:14:c4-iperf-tx-tcp-4.8%25-retries-at-49.7MBps.pcapng.gz | | | amd64, Edimax | Linksys | Linux v5.10.51, 8192cu (tag rs/2021-07-23) | 49.7 Mbits/s; 4.8% | 1m, direct line of sight | Some "ghost MAC addresses" | https://files.reto-schneider.ch/rtl8xxxu/2021-07-23-Testing/2021-07-23-8-Linux-5.10.51-2021-07-22-8192cu-edimax-08:be:ac:0b:14:c4-iperf-tx-tcp-4.8%25-retries-at-49.7MBps.pcapng.gz | | ||
| | amd64, Edimax | Linksys | Linux v5.10.51, rtl8xxxu (vanilla) | 45.7 Mbits/s; 9.4% | 1m, direct line of sigh | No "ghost MAC addresses" | https://files.reto-schneider.ch/rtl8xxxu/2021-07-23-Testing/2021-07-23-10-Linux-5.10.51-2021-07-22-vanilla-rtl8xxxu-edimax-08:be:ac:0b:14:c4-iperf-tx-tcp-9.4%25-retries-at-45.7MBps.pcapng.gz | | | amd64, Edimax | Linksys | Linux v5.10.51, rtl8xxxu (vanilla) | 45.7 Mbits/s; 9.4% | 1m, direct line of sigh | No "ghost MAC addresses" | https://files.reto-schneider.ch/rtl8xxxu/2021-07-23-Testing/2021-07-23-10-Linux-5.10.51-2021-07-22-vanilla-rtl8xxxu-edimax-08:be:ac:0b:14:c4-iperf-tx-tcp-9.4%25-retries-at-45.7MBps.pcapng.gz | | ||
| - | | amd64, Edimax | DLink | Linux v5.12, 8192cu (https://github.com/mschiu77/rtl8188cus_vendor.git master) | 40~42 Mbits/s; 9% | 3m, direct line of sight | steady performance | https://mega.nz/folder/GAcwnDjY#Xf9lVMriWcPpIUACjuZiqg | | ||
| - | | amd64, Edimax | DLink | Linux v5.12, 8192cu ((https://github.com/mschiu77/rtl8188cus_vendor.git master) | 13-16 Mbits/s; 20~23% | 6m, direct line of sight | steady throughput w/o sudden drop | https://mega.nz/folder/HZ8iQRqY#2ss6WW9u6oxInJvT2R6iCw | | ||
| | ARMv5, GARDENA smart Gateway (00:1d:43:c0:19:8a) | Linksys | Linux v5.10.52, 8192cu (tag rs/2021-07-23) | 30.6 Mbits/s; 0.9% | 1m, direct line of sigh | Some "ghost MAC addresses"; This is the kind of performance wanted | https://files.reto-schneider.ch/rtl8xxxu/2021-07-24-Testing/2021-07-24-3-Linux-5.10.52-8192cu-gateway-00:1d:43:c0:19:8a-iperf-tx-tcp-0.9%-retries-at-30.6MBps.pcapng.gz | | | ARMv5, GARDENA smart Gateway (00:1d:43:c0:19:8a) | Linksys | Linux v5.10.52, 8192cu (tag rs/2021-07-23) | 30.6 Mbits/s; 0.9% | 1m, direct line of sigh | Some "ghost MAC addresses"; This is the kind of performance wanted | https://files.reto-schneider.ch/rtl8xxxu/2021-07-24-Testing/2021-07-24-3-Linux-5.10.52-8192cu-gateway-00:1d:43:c0:19:8a-iperf-tx-tcp-0.9%-retries-at-30.6MBps.pcapng.gz | | ||
| | ARMv5, GARDENA smart Gateway (00:1d:43:c0:19:8a) | Linksys | Linux v5.10.52, 8192cu (tag rs/2021-07-23) | 42.5 Mbits/s; 2.4% | 1m, direct line of sigh | Some "ghost MAC addresses"; This is the kind of performance wanted | https://files.reto-schneider.ch/rtl8xxxu/2021-07-24-Testing/2021-07-24-4-Linux-5.10.52-8192cu-gateway-00:1d:43:c0:19:8a-iperf-tx-tcp-2.4%-retries-at-42.5MBps.pcapng.gz | | | ARMv5, GARDENA smart Gateway (00:1d:43:c0:19:8a) | Linksys | Linux v5.10.52, 8192cu (tag rs/2021-07-23) | 42.5 Mbits/s; 2.4% | 1m, direct line of sigh | Some "ghost MAC addresses"; This is the kind of performance wanted | https://files.reto-schneider.ch/rtl8xxxu/2021-07-24-Testing/2021-07-24-4-Linux-5.10.52-8192cu-gateway-00:1d:43:c0:19:8a-iperf-tx-tcp-2.4%-retries-at-42.5MBps.pcapng.gz | | ||
| Line 221: | Line 218: | ||
| === Chris === | === Chris === | ||
| + | |||
| + | |||
| == TCP TX Throughput == | == TCP TX Throughput == | ||
| - | | **DUT** | **AP** | **Driver** | **Throughput [Mbits/sec]; retries [%]** | **AP <-> DUT** | **Notes** | **PCAP** | | + | | **DUT** | **AP** | **Driver** | **Throughput [Mbits/sec]; retries [%]** | **AP <-> DUT** | **Notes** | **PCAP** | |
| - | | amd64, Edimax | Linksys | Linux v5.10.51, rtl8xxxu (vanilla) | 30.6 Mbits/s; 12% | 2m, two monitors in line of sight | Many "ghost MAC addresses" | https://files.reto-schneider.ch/rtl8xxxu/2021-07-23-Testing/2021-07-23-1-Linux-5.10.51-2021-07-22-vanilla-rtl8xxxu-edimax-08:be:ac:0b:14:c4-iperf-tx-tcp-12%25-retries-at-30.6MBps.pcapng.gz | | + | | amd64, Edimax | DLink | Linux v5.13.1 rtl8xxxu | 23~27 Mbits/s; 12~14% | 3m, direct line of sight | performance drop for a few seconds | https://mega.nz/folder/LI0ATTAK#0E2J5DHksD1jQi1oJCOJWg | |
| - | | amd64, Edimax | Linksys | Linux v5.10.51, rtl8xxxu (vanilla) | 13.1 Mbits/s; 3% | 2m, two monitors in line of sight | Many "ghost MAC addresses"; unexplained performance/retry drop | https://files.reto-schneider.ch/rtl8xxxu/2021-07-23-Testing/2021-07-23-3-Linux-5.10.51-2021-07-22-vanilla-rtl8xxxu-edimax-08:be:ac:0b:14:c4-iperf-tx-tcp-3%25-retries-at-13.1MBps.pcapng.gz | | + | | amd64, Edimax | DLink | Linux v5.13.1 rtl8xxxu | 7-14 Mbits/s; 16~20% | 6m, direct line of sight | performance drop to 0 sometimes | https://mega.nz/folder/vMdgADRD#XHljNHbzzlp63qqFsT-rkQ | |
| - | | amd64, Edimax | DLink | Linux v5.13.1 rtl8xxxu | 23~27 Mbits/s; 12~14% | 3m, direct line of sight | performance drop for a few seconds | https://mega.nz/folder/LI0ATTAK#0E2J5DHksD1jQi1oJCOJWg | | + | | amd64, Edimax | DLink | Linux v5.12, 8192cu (https://github.com/mschiu77/rtl8188cus_vendor.git master) | 40~42 Mbits/s; 9% | 3m, direct line of sight | steady performance | https://mega.nz/folder/GAcwnDjY#Xf9lVMriWcPpIUACjuZiqg | |
| - | | amd64, Edimax | DLink | Linux v5.13.1 rtl8xxxu | 7-14 Mbits/s; 16~20% | 6m, direct line of sight | performance drop to 0 sometimes | https://mega.nz/folder/vMdgADRD#XHljNHbzzlp63qqFsT-rkQ | | + | | amd64, Edimax | DLink | Linux v5.12, 8192cu ((https://github.com/mschiu77/rtl8188cus_vendor.git master) | 13-16 Mbits/s; 20~23% | 6m, direct line of sight | steady throughput w/o sudden drop | https://mega.nz/folder/HZ8iQRqY#2ss6WW9u6oxInJvT2R6iCw | |
| - | | amd64, Edimax | Linksys | Linux v5.10.51, 8192cu (tag rs/2021-07-23) | 4.02 Mbits/s; 17.2% | 2m, two monitors in line of sight | No "ghost MAC addresses"; Surprisingly bad performance | https://files.reto-schneider.ch/rtl8xxxu/2021-07-23-Testing/2021-07-23-5-Linux-5.10.51-2021-07-22-8192cu-edimax-08:be:ac:0b:14:c4-iperf-tx-tcp-16%25-retries-at-4.02MBps.pcapng.gz | | + | |
| - | | amd64, Edimax | Linksys | Linux v5.10.51, 8192cu (tag rs/2021-07-23) | 3.91 Mbits/s; 18.8% | 2m, two monitors in line of sight | No "ghost MAC addresses"; Surprisingly bad performance | https://files.reto-schneider.ch/rtl8xxxu/2021-07-23-Testing/2021-07-23-6-Linux-5.10.51-2021-07-22-8192cu-edimax-08:be:ac:0b:14:c4-iperf-tx-tcp-18%25-retries-at-3.91MBps.pcapng.gz | | + | == TCP RX Throughput == |
| - | | amd64, Edimax | Linksys | Linux v5.10.51, 8192cu (tag rs/2021-07-23) | 49.7 Mbits/s; 4.8% | 1m, direct line of sight | Some "ghost MAC addresses" | https://files.reto-schneider.ch/rtl8xxxu/2021-07-23-Testing/2021-07-23-8-Linux-5.10.51-2021-07-22-8192cu-edimax-08:be:ac:0b:14:c4-iperf-tx-tcp-4.8%25-retries-at-49.7MBps.pcapng.gz | | + | |
| - | | amd64, Edimax | Linksys | Linux v5.10.51, rtl8xxxu (vanilla) | 45.7 Mbits/s; 9.4% | 1m, direct line of sigh | No "ghost MAC addresses" | https://files.reto-schneider.ch/rtl8xxxu/2021-07-23-Testing/2021-07-23-10-Linux-5.10.51-2021-07-22-vanilla-rtl8xxxu-edimax-08:be:ac:0b:14:c4-iperf-tx-tcp-9.4%25-retries-at-45.7MBps.pcapng.gz | | + | == Setup == |
| - | | amd64, Edimax | DLink | Linux v5.12, 8192cu (https://github.com/mschiu77/rtl8188cus_vendor.git master) | 40~42 Mbits/s; 9% | 3m, direct line of sight | steady performance | https://mega.nz/folder/GAcwnDjY#Xf9lVMriWcPpIUACjuZiqg | | + | - Blacklist all drivers (rlt8xxxu, 8192cu, rtl8192cu) |
| - | | amd64, Edimax | DLink | Linux v5.12, 8192cu ((https://github.com/mschiu77/rtl8188cus_vendor.git master) | 13-16 Mbits/s; 20~23% | 6m, direct line of sight | steady throughput w/o sudden drop | https://mega.nz/folder/HZ8iQRqY#2ss6WW9u6oxInJvT2R6iCw | | + | - Ensure no drivers are loaded |
| - | | ARMv5, GARDENA smart Gateway (00:1d:43:c0:19:8a) | Linksys | Linux v5.10.52, 8192cu (tag rs/2021-07-23) | 30.6 Mbits/s; 0.9% | 1m, direct line of sigh | Some "ghost MAC addresses"; This is the kind of performance wanted | https://files.reto-schneider.ch/rtl8xxxu/2021-07-24-Testing/2021-07-24-3-Linux-5.10.52-8192cu-gateway-00:1d:43:c0:19:8a-iperf-tx-tcp-0.9%-retries-at-30.6MBps.pcapng.gz | | + | - Load driver to be tested (rlt8xxxu, 8192cu) with insmod |
| - | | ARMv5, GARDENA smart Gateway (00:1d:43:c0:19:8a) | Linksys | Linux v5.10.52, 8192cu (tag rs/2021-07-23) | 42.5 Mbits/s; 2.4% | 1m, direct line of sigh | Some "ghost MAC addresses"; This is the kind of performance wanted | https://files.reto-schneider.ch/rtl8xxxu/2021-07-24-Testing/2021-07-24-4-Linux-5.10.52-8192cu-gateway-00:1d:43:c0:19:8a-iperf-tx-tcp-2.4%-retries-at-42.5MBps.pcapng.gz | | + | - Start 802.11 capture |
| - | | ARMv5, GARDENA smart Gateway (00:1d:43:c0:19:8a) | Linksys | Linux v5.10.52, rtl8xxxu (vanilla) | 12.5 Mbits/s; 17% | 1m, direct line of sigh | Many "ghost MAC addresses" | https://files.reto-schneider.ch/rtl8xxxu/2021-07-24-Testing/2021-07-24-1-Linux-5.10.52-vanilla-rtl8xxxu-gateway-00:1d:43:c0:19:8a-iperf-tx-tcp-17%-retries-at-12.5MBps.pcapng.gz | | + | - Once IP address got assigned, measure the performance using iperf3: |
| - | | ARMv5, GARDENA smart Gateway (00:1d:43:c0:19:8a) | Linksys | Linux v5.10.52, rtl8xxxu (patch 10; tag gardena/rs/v5.10.52-rtl8xxxu-writeup-1-reduce-usb-interrupt-v1) | 20.6 Mbits/s; 12% | 1m, direct line of sigh | Few(er) "ghost MAC addresses"; Clear improvement over vanilla | https://files.reto-schneider.ch/rtl8xxxu/2021-07-24-Testing/2021-07-24-9-Linux-5.10.52-rtl8xxxu-1-usb-interrupt-reduction-gateway-00:1d:43:c0:19:8a-iperf-tx-tcp-12.0%-retries-at-20.6MBps.pcapng.gz | | + | * TCP TX Throughput: <code>iperf3 -c 192.168.0.11 -t 30 -i 1</code> |
| - | | ARMv5, GARDENA smart Gateway (00:1d:43:c0:19:8a) | Linksys | Linux v5.10.52, rtl8xxxu (patches 10, 7; gardena/rs/v5.10.52-rtl8xxxu-writeup-3-tx-apdu-aggregation-v1) | 24.3 Mbits/s; 39.9% | 1m, direct line of sigh | Tons of "ghost MAC addresses"; Performance improved, but *terrible* retry rate | https://files.reto-schneider.ch/rtl8xxxu/2021-07-27-Testing/2021-07-27-1-Linux-5.10.52-rtl8xxxu-3-tx-apdu-aggregation-gateway-00:1d:43:c0:19:8a-iperf-tx-tcp-39.9%25-retries-at-24.3MBps.pcapng.gz | | + | * TCP RX Throughput: <code>iperf3 -c --reverse 192.168.0.11 -t 30 -i 1</code> |
| - | | ARMv5, GARDENA smart Gateway (00:1d:43:c0:19:8a) | Linksys | Linux v5.10.52, rtl8xxxu (patches 10, 8; tag gardena/rs/v5.10.52-rtl8xxxu-writeup-4-hw-rts-v1) | 15.2 Mbits/s; 17.7% | 1m, direct line of sigh | Few "ghost MAC addresses"; Throughout and retry percentage worsened | https://files.reto-schneider.ch/rtl8xxxu/2021-07-27-Testing/2021-07-27-3-Linux-5.10.52-rtl8xxxu-writeup-4-hw-rts-gateway-00:1d:43:c0:19:8a-iperf-tx-tcp-17.7%25-retries-at-15.2MBps.pcapng.gz | | + | |
| - | | ARMv5, GARDENA smart Gateway (00:1d:43:c0:19:8a) | Linksys | Linux v5.10.52, rtl8xxxu (patches 10, 8, 7; tag gardena/rs/v5.10.52-rtl8xxxu-writeup-5-ampdu-v1) | 20.8 Mbits/s; 46.5% | 1m, direct line of sigh | Many "ghost MAC addresses"; Terrible retry performance; Patch 9 does not change this. | https://files.reto-schneider.ch/rtl8xxxu/2021-07-27-Testing/2021-07-27-5-Linux-5.10.52-rtl8xxxu-writeup-5-ampdu-v1-gateway-00:1d:43:c0:19:8a-iperf-tx-tcp-46.5%25-retries-at-20.8MBps.pcapng.gz | | + | == Repos == |
| + | * Linux: https://github.com/mschiu77/linux/tree/chris/ampdu_action | ||
| + | * 8192cu: https://github.com/mschiu77/rtl8188cus_vendor | ||
| + | |||
| + | == Analysis == | ||
| + | * The throughput values are the ones reported by iperf3 (the lower value if server/client values differ) | ||
| + | * The retry values are taken from Wireshark in menu "Wireless" -> "WLAN Traffic" | ||
| + | | **DUT** | **AP** | **Driver** | **Throughput [Mbits/sec]; retries [%]** | **AP <-> DUT** | **Notes** | **PCAP** | | ||
| + | | amd64, Edimax | DLink | Linux v5.13.1 rtl8xxxu | 36 Mbits/s; 12% | 3m, direct line of sight | performance is stable high | https://mega.nz/folder/3Zs0nDrK#i1fnW6Bp5E_jeC3dcPlWaw | | ||
| + | | amd64, Edimax | DLink | Linux v5.13.1 rtl8xxxu | 16 Mbits/s; 30% | 6m, direct line of sight | performance is stably low | https://mega.nz/folder/TcsQAZoI#VbQiPZF1B7EJK1_82x2kOg | | ||
en/users/wi-fi-alliance-certification.txt · Last modified: 2021/11/10 00:43 by Reto Schneider
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