Re: CFT: major update to if_ure (patch did not apply cleanly for head -r363510) (example PowerMac problem?)

From: Mark Millard <marklmi_at_yahoo.com>
Date: Mon, 27 Jul 2020 21:01:30 -0700
[I figured out how it appeared to go faster than USB2.]

On 2020-Jul-27, at 20:07, Mark Millard <marklmi_at_yahoo.com> wrote:

> On 2020-Jul-27, at 19:07, Mark Millard <marklmi at yahoo.com> wrote:
> 
>> On 2020-Jul-27, at 18:44, John-Mark Gurney <jmg at funkthat.com> wrote:
>> 
>>> Mark Millard wrote this message on Mon, Jul 27, 2020 at 17:15 -0700:
>>>> On 2020-Jul-27, at 16:43, Mark Millard <marklmi at yahoo.com> wrote:
>>>> 
>>>>> On 2020-Jul-26, at 18:20, John-Mark Gurney <jmg at funkthat.com> wrote:
>>>>> 
>>>>>> Mark Millard wrote this message on Sat, Jul 25, 2020 at 19:13 -0700:
>>>>>>> For reference for what applying the patch
>>>>>>> reported (see Hunk #14):
>>>>>> 
>>>>>> Ok, updated it to be relative to r363583...
>>>>>> 
>>>>>> I had made a white spcae commit to if_ure.c, but hadn't made the
>>>>>> patch relative to it after that commit.. should work now..
>>>>> 
>>>>> I updated an old PowerMac G5 (2 sockets/2 cores each) to
>>>>> head -r363590 with the update patch and tjen plugged in the
>>>>> USB EtherNet device. The result (extracted from dmesg -a)
>>>>> was:
>>>>> 
>>>>> usb_alloc_device: set address 2 failed (USB_ERR_TIMEOUT, ignored)
>>>>> usbd_setup_device_desc: getting device descriptor at addr 2 failed, USB_ERR_TIMEOUT
>>>>> usbd_req_re_enumerate: addr=2, set address failed! (USB_ERR_TIMEOUT, ignored)
>>>>> usbd_setup_device_desc: getting device descriptor at addr 2 failed, USB_ERR_TIMEOUT
>>>>> usbd_req_re_enumerate: addr=2, set address failed! (USB_ERR_TIMEOUT, ignored)
>>>>> usbd_setup_device_desc: getting device descriptor at addr 2 failed, USB_ERR_TIMEOUT
>>>>> usbd_req_re_enumerate: addr=2, set address failed! (USB_ERR_TIMEOUT, ignored)
>>>>> usbd_setup_device_desc: getting device descriptor at addr 2 failed, USB_ERR_TIMEOUT
>>>>> usbd_req_re_enumerate: addr=2, set address failed! (USB_ERR_TIMEOUT, ignored)
>>>>> usbd_setup_device_desc: getting device descriptor at addr 2 failed, USB_ERR_TIMEOUT
>>>>> ugen2.2: <Unknown > at usbus2 (disconnected)
>>>>> uhub_reattach_port: could not allocate new device
>>>>> 
>>>>> Unfortunately, I'd not tried a PowerMac with the type of
>>>>> device before the update. I do not know if the above is
>>>>> new behavior or not.
>>>>> 
>>>>> The PowerMac is big-endian, which is what got me to think
>>>>> about trying it there. The PowerMac is also 64-bit running
>>>>> a 64-bit FreeBSD. Its USB is 2.0.
>>>>> 
>>>>> (It also has 2 GigaBit EtherNet ports of its own so I'm not
>>>>> likely to use a USB device outside special testing.)
>>>>> 
>>>> 
>>>> I tried what normally shows as an axge0, but
>>>> trying on the PowerMac G5. It got the same sort
>>>> of messages as above. The problem does not seem
>>>> to be tied to your patch.
>>>> 
>>>> It does prevent my testing the patch on the G5.
>>> 
>>> Yeah, I was going to say that the above messages are before any of
>>> may changes get run, so it's unlikely a problem w/ my patch...
>>> If the USB device can't get an address on the bus, then it can't
>>> even ask what type of device it is to load the driver.
>>> 
>>> Thanks for trying though, maybe someone on the -powerpc list knows
>>> of a fix for that.
>>> 
>> 
>> Turns out that having:
>> 
>> hw.usb.xhci.use_polling=1
>> 
>> in /boot/loader.conf allowed the old PowerMac context to
>> get:
>> 
>> ugen2.2: <Realtek USB 10/100/1000 LAN> at usbus2
>> ure0 numa-domain 0 on uhub2
>> ure0: <Realtek USB 10/100/1000 LAN, class 0/0, rev 2.10/30.00, addr 2> on usbus2
>> miibus2: <MII bus> numa-domain 0 on ure0
>> rgephy0: <RTL8251/8153 1000BASE-T media interface> PHY 0 on miibus2
>> rgephy0:  none, 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT-FDX, 1000baseT-FDX-master, auto
>> ue0: <USB Ethernet> on ure0
>> ue0: Ethernet address: ###
>> ue0: link state changed to DOWN
>> 
>> and:
>> 
>> ue0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>> 	options=68009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
>> 	ether ###
>> 	inet 192.168.1.149 netmask 0xffffff00 broadcast 192.168.1.255
>> 	media: Ethernet autoselect (1000baseT <full-duplex>)
>> 	status: active
>> 	nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>> 
>> So, with that context, . . .
>> (the two directions are widely mismatched)
>> 
>> . . .
> 
> The above is very odd for USB2 since USB2 is limited to
> 480Mbits/sec, if I understand right. May be it is a mode
> of use that is not getting data to send from USB
> regularly at all, say internally generated data or
> constant/repeated data only loaded from USB once?
> 
> If yes, then comparing to receiving is not useful and
> it need not be useful for comparing to data that does
> come from USB transfers.
> 
> I suppose another possibility is that it is an error
> that it appears to be going as fast as it appears
> above.

I isolated the problem: it was not really using
192.168.1.149, but instead 192.168.1.145 (the
builtin bge0). This is despite the -N and what
the output reported. FYI:

bge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
	options=8009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LINKSTATE>
	###
	inet 192.168.1.145 netmask 0xffffff00 broadcast 192.168.1.255
	media: Ethernet autoselect (1000baseT <full-duplex>)
	status: active
	nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>

ue0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
	options=68009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
	###
	inet 192.168.1.149 netmask 0xffffff00 broadcast 192.168.1.255
	media: Ethernet autoselect (1000baseT <full-duplex>)
	status: active
	nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>

After using:

# ifconfig bge0 down

things behaved with speeds that USB2 can handle:

# iperf3 -c 192.168.1.120 -B 192.168.1.149 --get-server-output
Connecting to host 192.168.1.120, port 5201
[  5] local 192.168.1.149 port 62507 connected to 192.168.1.120 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  15.9 MBytes   133 Mbits/sec    2    115 KBytes       
[  5]   1.00-2.00   sec  15.6 MBytes   131 Mbits/sec    4    111 KBytes       
[  5]   2.00-3.00   sec  15.7 MBytes   131 Mbits/sec    4    101 KBytes       
[  5]   3.00-4.00   sec  15.6 MBytes   131 Mbits/sec    5   84.1 KBytes       
[  5]   4.00-5.00   sec  15.6 MBytes   131 Mbits/sec    3   62.7 KBytes       
[  5]   5.00-6.00   sec  15.7 MBytes   131 Mbits/sec    5   39.9 KBytes       
[  5]   6.00-7.00   sec  15.7 MBytes   131 Mbits/sec    5   34.2 KBytes       
[  5]   7.00-8.00   sec  15.7 MBytes   131 Mbits/sec    3   9.98 KBytes       
[  5]   8.00-9.00   sec  15.6 MBytes   131 Mbits/sec    4   15.7 KBytes       
[  5]   9.00-10.00  sec  15.6 MBytes   131 Mbits/sec    4    123 KBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec   157 MBytes   131 Mbits/sec   39             sender
[  5]   0.00-10.98  sec   157 MBytes   120 Mbits/sec                  receiver

Server output:
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.1.149, port 42844
[  5] local 192.168.1.120 port 5201 connected to 192.168.1.149 port 62507
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec   424 KBytes  3.48 Mbits/sec                  
[  5]   1.00-2.00   sec  15.7 MBytes   131 Mbits/sec                  
[  5]   2.00-3.00   sec  15.6 MBytes   131 Mbits/sec                  
[  5]   3.00-4.00   sec  15.6 MBytes   131 Mbits/sec                  
[  5]   4.00-5.00   sec  15.6 MBytes   131 Mbits/sec                  
[  5]   5.00-6.00   sec  15.6 MBytes   131 Mbits/sec                  
[  5]   6.00-7.00   sec  15.6 MBytes   131 Mbits/sec                  
[  5]   7.00-8.00   sec  15.6 MBytes   131 Mbits/sec                  
[  5]   8.00-9.00   sec  15.7 MBytes   131 Mbits/sec                  
[  5]   9.00-10.00  sec  15.6 MBytes   131 Mbits/sec                  
[  5]  10.00-10.98  sec  15.3 MBytes   131 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate

And:

# iperf3 -R -c 192.168.1.120 -B 192.168.1.149 --get-server-output
Connecting to host 192.168.1.120, port 5201
Reverse mode, remote host 192.168.1.120 is sending
[  5] local 192.168.1.149 port 61744 connected to 192.168.1.120 port 5201
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  13.7 MBytes   115 Mbits/sec                  
[  5]   1.00-2.00   sec  13.5 MBytes   114 Mbits/sec                  
[  5]   2.00-3.00   sec  13.5 MBytes   114 Mbits/sec                  
[  5]   3.00-4.00   sec  13.5 MBytes   113 Mbits/sec                  
[  5]   4.00-5.00   sec  13.6 MBytes   114 Mbits/sec                  
[  5]   5.00-6.00   sec  13.5 MBytes   113 Mbits/sec                  
[  5]   6.00-7.00   sec  13.5 MBytes   113 Mbits/sec                  
[  5]   7.00-8.00   sec  13.5 MBytes   113 Mbits/sec                  
[  5]   8.00-9.00   sec  13.5 MBytes   113 Mbits/sec                  
[  5]   9.00-10.00  sec  13.4 MBytes   113 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.84  sec   135 MBytes   105 Mbits/sec  12652             sender
[  5]   0.00-10.00  sec   135 MBytes   113 Mbits/sec                  receiver

Server output:
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.1.149, port 12490
[  5] local 192.168.1.120 port 5201 connected to 192.168.1.149 port 61744
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  2.25 MBytes  18.9 Mbits/sec  186   30.1 KBytes       
[  5]   1.00-2.00   sec  13.7 MBytes   115 Mbits/sec  1242   34.4 KBytes       
[  5]   2.00-3.00   sec  13.5 MBytes   113 Mbits/sec  1291   27.3 KBytes       
[  5]   3.00-4.00   sec  13.5 MBytes   114 Mbits/sec  1242   34.5 KBytes       
[  5]   4.00-5.00   sec  13.5 MBytes   113 Mbits/sec  1302   25.8 KBytes       
[  5]   5.00-6.00   sec  13.6 MBytes   114 Mbits/sec  1249   27.3 KBytes       
[  5]   6.00-7.00   sec  13.4 MBytes   113 Mbits/sec  1285   21.6 KBytes       
[  5]   7.00-8.00   sec  13.5 MBytes   113 Mbits/sec  1238   33.0 KBytes       
[  5]   8.00-9.00   sec  13.6 MBytes   114 Mbits/sec  1260   31.6 KBytes       
[  5]   9.00-10.00  sec  13.5 MBytes   113 Mbits/sec  1256   25.9 KBytes       
[  5]  10.00-10.84  sec  11.3 MBytes   112 Mbits/sec  1101   18.8 KBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.84  sec   135 MBytes   105 Mbits/sec  12652             sender


iperf Done.

So do not necessarily believe the -B IP-ADDR or local IP-ADDR
reporting if there is an alternative active, at least for
sending data.

>> . . .
>> 
>> Very asymmetric: send relatively fast, receive relatively slow.

Not after the above problem avoidance: now both relatively slow
for hw.usb.xhci.use_polling=1 use.

>> I've not tried hw.usb.xhci.use_polling=1 in any other context. So,
>> for all I know, the results of using such could be expected.




===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)
Received on Tue Jul 28 2020 - 02:01:36 UTC

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