On my machine it works. # iperf -s -u -p 5077 ------------------------------------------------------------ Server listening on UDP port 5077 Receiving 1470 byte datagrams UDP buffer size: 176 KByte (default) ------------------------------------------------------------ [ 3] local 192.168.199.128 port 5077 connected with 192.168.199.129 port 52400 [ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams [ 3] 0.0-300.2 sec 1.13 GBytes 32.5 Mbits/sec 0.811 ms 447069/1275909 (35%) C:\work\iperf\iperf-2.0.9-win64>iperf -c 192.168.199.128 -u -p 5077 -b 200M -t 300 ------------------------------------------------------------ Client connecting to 192.168.199.128, UDP port 5077 Sending 1470 byte datagrams, IPG target: 58.80 us (kalman adjust) UDP buffer size: 208 KByte (default) ------------------------------------------------------------ [ 3] local 192.168.199.129 port 52400 connected with 192.168.199.128 port 5077 [ ID] Interval Transfer Bandwidth [ 3] 0.0-300.0 sec 1.75 GBytes 50.0 Mbits/sec [ 3] Sent 1275909 datagrams [ 3] Server Report: [ 3] 0.0-300.2 sec 1.13 GBytes 32.5 Mbits/sec 0.811 ms 447069/1275909 (35%) The only problem that I have is that after some time appears that the link goes up again, although the connection does not break and the stick is still plugged in. # ip -oneline -family inet monitor link 6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> \ link/ether 6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> \ link/ether # uname -a Linux 6.0.5-rt14-00133-g9bc110e18268 #23 PREEMPT_RT @1683554137 ppc GNU/Linux I use Linux 6.0.5 patched with latest changes from rtw88: $ git log --oneline 9bc110e18268 (HEAD -> v6.0.5-rt14-rtw88) wifi: rtw88: Update spelling in main.h 3ae5fb6c4817 wifi: rtw88: Fix memory leak in rtw88_usb 45b8a6b717f7 wifi: rtw88: call rtw8821c_switch_rf_set() according to chip variant 9a026c4ca518 wifi: rtw88: set pkg_type correctly for specific rtw8821c variants 1a6a48dcfc62 wifi: rtw88: rtw8821c: Fix rfe_option field width dc964f05689e wifi: rtw88: usb: fix priority queue to endpoint mapping 551f663748ec wifi: rtw88: 8822c: add iface combination 406db9770c3b wifi: rtw88: prevent scan abort with other VIFs c4baacf76af1 wifi: rtw88: refine reserved page flow for AP mode bf443e16ab6b wifi: rtw88: disallow PS during AP mode a4e31f468776 wifi: rtw88: 8822c: extend reserved page number 7d3459fec41d wifi: rtw88: add port switch for AP mode 1663c8bbfb6c wifi: rtw88: add bitmap for dynamic port settings 177cce5278da wifi: rtw88: Add support for the SDIO based RTL8821CS chipset 0c2d0c2e95e9 wifi: rtw88: Add support for the SDIO based RTL8822CS chipset 54ccc15bf8e8 wifi: rtw88: Add support for the SDIO based RTL8822BS chipset 5ba6cc26d37d wifi: rtw88: main: Reserve 8 bytes of extra TX headroom for SDIO cards 78968acd1cf7 wifi: rtw88: main: Add the {cpwm,rpwm}_addr for SDIO based chipsets 2c84a6fbc425 wifi: rtw88: mac: Support SDIO specific bits in the power on sequence f8fecd6b4b15 wifi: rtw88: sdio: Add HCI implementation for SDIO based chipsets 18d149b363ec wifi: rtw88: Clear RTW_FLAG_POWERON early in rtw_mac_power_switch() 4428afb018ad wifi: rtw88: Remove redundant pci_clear_master e03a57505246 wifi: rtw88: remove unused rtw_pci_get_tx_desc function 1a33faaf7ee2 wifi: rtw88: fix memory leak in rtw_usb_probe() 7df514789989 wifi: rtw88: mac: Return the original error from rtw_mac_power_switch() cdcec0087eed wifi: rtw88: mac: Return the original error from rtw_pwr_seq_parser() 29e7e78aff16 wifi: rtw88: rtw8822c: Implement RTL8822CS (SDIO) efuse parsing fd1c578236f0 wifi: rtw88: rtw8822b: Implement RTL8822BS (SDIO) efuse parsing 27cf63903f82 wifi: rtw88: rtw8821c: Implement RTL8821CS (SDIO) efuse parsing 880dcc22d96e wifi: rtw88: mac: Add SDIO HCI support in the TX/page table setup 02a905156d9f wifi: rtw88: mac: Add support for the SDIO HCI in rtw_pwr_seq_parser() 3cbb5e76d79d wifi: rtw88: use RTW_FLAG_POWERON flag to prevent to power on/off twice d645a4334e82 wifi: rtw88: add flag check before enter or leave IPS 96c6c8188d76 wifi: rtw88: usb: drop now unnecessary URB size check 7c6f489cee16 wifi: rtw88: usb: send Zero length packets if necessary 3cd2c456cf5f wifi: rtw88: usb: Set qsel correctly 93da623c5ab9 wifi: rtw88: mac: Use existing macros in rtw_pwr_seq_parser() 2adec4917988 wifi: rtw88: Move enum rtw_tx_queue_type mapping code to tx.{c,h} 25e6d15c23f2 wifi: rtw88: pci: Change queue datatype to enum rtw_tx_queue_type f915cdb6b40c wifi: rtw88: pci: Use enum type for rtw_hw_queue_mapping() and ac_to_hwq 32c6e075e96f wifi: rtw88: Use non-atomic sta iterator in rtw_ra_mask_info_update() 42509ddaa145 wifi: rtw88: Use rtw_iterate_vifs() for rtw_vif_watch_dog_iter() a963db0abf71 wifi: rtw88: Move register access from rtw_bf_assoc() outside the RCU ba948e675516 wifi: rtw88: Add rtw8723du chipset support 5790a74b07bc wifi: rtw88: Add rtw8822cu chipset support a22a3494b2b0 wifi: rtw88: Add rtw8822bu chipset support fff42b4bfafe wifi: rtw88: Add rtw8821cu chipset support bf5a6ce1815f wifi: rtw88: Add common USB chip support 2bd3a3cdff6b wifi: rtw88: iterate over vif/sta list non-atomically e6198781367b wifi: rtw88: Drop coex mutex 7274d8b3144a wifi: rtw88: Drop h2c.lock aa76144a028e wifi: rtw88: Drop rf_lock 2d162565d3bb wifi: rtw88: Call rtw_fw_beacon_filter_config() with rtwdev->mutex held 9691b6813454 wifi: rtw88: print firmware type in info message 94243d5a51f9 wifi: rtw88: 8821c: enable BT device recovery mechanism ec71728e9565 wifi: rtw88: fix race condition when doing H2C command dd281929b088 wifi: mac80211: extend ieee80211_nullfunc_get() for MLO 040e3123e9d9 (tag: v6.0.5-rt14) v6.0.5-rt14c775cbedc0b8 net: axienet: Remove the obsolete u64_stats_fetch_*_irq(). 19dbfda76f91 (tag: v6.0.5-rt13) v6.0.5-rt13 20d4181d35af Merge tag 'v6.0.5' into linux-6.0.y-rt 3829606fc5df (tag: v6.0.5) Linux 6.0.5 On Thu, May 11, 2023 at 3:26 PM Petter Mabacker <petter@xxxxxxxxxx> wrote: > > >Actually there is a recent firmware 9.9.15. > >Petter use that, is displayed in the first email. > > >I have also an LM482 with 9.9.15 firmware. I used iperf with TCP and I > >could not reproduce that. > >I will try iperf with UDP like in your case. > >How do you use LM482 when running iperf ? As station or AP ? > > >Gabriel > > Yes, I have been using 9.9.15, but I have also tested using 9.9.14 firmware. > I'm running it as a station. Please let me know if you manage to reproduce a similar behaviour by flooding the udp like in my example. > > Thanks. > BR Petter > > On Tue, May 9, 2023 at 11:18=E2=80=AFAM Sascha Hauer <s.hauer@pengutronix.d= > e> wrote: > >> > >> On Tue, May 09, 2023 at 09:43:50AM +0200, Petter Mabacker wrote: > >> > >> I'm working with a Linux 6.1 based track, but with all the mentioned bug fixes cherry-picked to that track. They have all made the LM842 a lot more stabile, but the issue I see with "tx report failed" is currently blocking me from using the LM842, since the mender upgrade is a crucial part for my use-case. > >> > >> > >> > >> I have been trying to find a better way to reproduce the issue, without any success so far. For me it takes just 10-30 sec with above mention flooding using iperf to at least trigger a similar case. > >> > >> > >> > >> ... > >> > >> [ 671.908527] rtw_8822cu 1-1:1.2: failed to get rx_queue, overflow > >> > >> [ 671.914632] rtw_8822cu 1-1:1.2: failed to get rx_queue, overflow > >> > >> [ 671.920750] rtw_8822cu 1-1:1.2: failed to get rx_queue, overflow > >> > >> [ 671.926792] rtw_8822cu 1-1:1.2: failed to get rx_queue, overflow > >> > >> [ 671.932924] rtw_8822cu 1-1:1.2: failed to get rx_queue, overflow > >> > > >> > >I am still not sure what to do about this. It happens with high RX load. > >> > >One way would be to just drop the log level of this message. > >> > >Otherwise this message should be harmless. > >> > > >> > Like stated in earlier mails, the initial problem was found during a > >> > mender upgrade (streaming a ~200MB file). In that case the problem > >> > occurs without any high RX load warnings. So that is not really > >> > related (at least I don't think so). > >> > > >> > The real problem is that the driver ends-up in a not working state > >> > after this. Not even hot-plugging the dongle will help. Instead a > >> > reboot or reset of the driver (rmmod/insmod etc) is required. > >> > > >> > >> > >> > >> [ 694.709045] rtw_8822cu 1-1:1.2: failed to get tx report from firmware > >> > >> > >> > >> [ 710.169496] rtw_8822cu 1-1:1.2: firmware failed to report density after scan > >> > >> [ 717.701235] rtw_8822cu 1-1:1.2: failed to send h2c command > >> > >> > >> > >> I can also mention that I'm running this in a i.MX6 SoloX based board. > >> > >> > >> > >> I will let you guys know if I find a better way to reproduce the > >> > >> issue. But if you have any good ideas what above error (that brings > >> > >> down the entire interface) really mean (for example does it indicate > >> > >> kernel or firmware issue), please feel free to share some information > >> > >> about it and it might help me in troubleshooting the issue further. > >> > > >> > >Please try reproducing this with a recent mainline vanilla kernel. It > >> > >shouldn't be too hard to bring up a i.MX6 board with a vanilla kernel. > >> > > >> > Just to be sure, I have tried this using latest kernel tree as you suggested: > >> > > >> > ~# uname -r > >> > 6.4.0-rc1-g5ca44e46dff4 > >> > > >> > However I get the very same behavior (in this case it's from the failed mender upgrade): > >> > [ 724.788270] rtw_8822cu 1-1:1.2: failed to get tx report from firmware > >> > [ 728.499480] rtw_8822cu 1-1:1.2: failed to send h2c command > >> > [ 758.558511] rtw_8822cu 1-1:1.2: firmware failed to report density after scan > >> > May 09 06:48:17 iotgw mender[643]: time=3D"2023-05-09T06:48:17Z" level=3Derror msg=3D"Download connection broken: read tcp 192.168.68.113:54072->52.239.140.42:443: read: connection timed out" > >> > [ 796.975782] rtw_8822cu 1-1:1.2: firmware failed to report density after scan > >> > [ 835.251656] rtw_8822cu 1-1:1.2: firmware failed to report density after scan > >> > [ 843.586421] rtw_8822cu 1-1:1.2: failed to send h2c command > >> > >> Unfortunately it looks like this very often when something goes wrong in > >> the RTW88 driver. These messages seem to be a general sign for the > >> device to say that we have touched it wrong somehow and it's stuck now. > >> > >> > > >> > When I try to hotplug the dongle (that still don't solve the issue). I > >> > can see below printout, any ideas what it really mean? (I never see > >> > this before the problem occurs, only when hotplugging after the > >> > problem occurs): > >> > > >> > [ 2298.729359] wlx34c9f08deb60: Limiting TX power to 23 (23 - 0) dBm as advertised by 1c:3b:f3:55:59:93 > >> > > >> > Since you cannot reproduce the similar (perhaps not even the same root > >> > issue) issue I saw using iperf, I will focus on trying to reproduce it > >> > using something similar as the streaming procedure done by mender. Any > >> > other suggestions from your side, or any logs etc that could be of > >> > interest? > >> > >> You could verify that you are using a recent firmware. The driver prints > >> it during initialization. It should be 9.9.11. > >> > >> Other than that I don't have any good idea, sorry. > >> > >> Sascha > >> > >> -- > >> Pengutronix e.K. | | > >> Steuerwalder Str. 21 | http://www.pengutronix.de/ | > >> 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | > >> Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | >