Comment 6 for bug 1670041

dima@blade:~$ uname -r
4.11.0-041100rc1-generic

dima@blade:~$ dpkg -l linux-firmware
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-=============================================-===========================-===========================-===============================================================================================
ii linux-firmware 1.163 all Firmware for Linux kernel drivers

dima@blade:~$ journalctl -k | grep ath10k
мар 06 20:29:43 blade kernel: ath10k_pci 0000:3b:00.0: enabling device (0000 -> 0002)
мар 06 20:29:43 blade kernel: ath10k_pci 0000:3b:00.0: pci irq msi oper_irq_mode 2 irq_mode 0 reset_mode 0
мар 06 20:29:44 blade kernel: ath10k_pci 0000:3b:00.0: qca6174 hw3.2 target 0x05030000 chip_id 0x00340aff sub 1a56:1535
мар 06 20:29:44 blade kernel: ath10k_pci 0000:3b:00.0: kconfig debug 0 debugfs 1 tracing 1 dfs 0 testmode 0
мар 06 20:29:44 blade kernel: ath10k_pci 0000:3b:00.0: firmware ver WLAN.RM.2.0-00180-QCARMSWPZ-1 api 4 features wowlan,ignore-otp,no-4addr-pad crc32 75dee6c5
мар 06 20:29:44 blade kernel: ath10k_pci 0000:3b:00.0: board_file api 2 bmi_id N/A crc32 6fc88fe7
мар 06 20:29:46 blade kernel: ath10k_pci 0000:3b:00.0: htt-ver 3.26 wmi-op 4 htt-op 3 cal otp max-sta 32 raw 0 hwcrypto 1
мар 06 20:29:46 blade kernel: ath10k_pci 0000:3b:00.0 wlp59s0: renamed from wlan0

-----------------

dima@blade:~⟫ iperf -c rtr
------------------------------------------------------------
Client connecting to rtr, TCP port 5001
TCP window size: 85.0 KByte (default)
------------------------------------------------------------
[ 3] local 10.10.10.78 port 57506 connected with 10.10.10.1 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 14.5 MBytes 12.1 Mbits/sec

Server-side:

RT-AC87U-F280:/tmp/home/root# iperf -s
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
[ 4] local 10.10.10.1 port 5001 connected with 10.10.10.78 port 57506
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-10.0 sec 14.5 MBytes 12.1 Mbits/sec

Just to confirm that ath10k changes (if any for 4.11) do not affect this: the chip firmware files are still old.