[OpenWrt-Devel] Ralink MT76228 port to Linux 4.0, set new IP address fail

[Roman Yeryomin]

On 12 June 2015 at 14:30, Baptiste Clenet <bapclenet at gmail.com> wrote:
> 2015-06-12 11:12 GMT+02:00 Baptiste Clenet <bapclenet at gmail.com>:
>> 2015-06-11 16:31 GMT+02:00 Roman Yeryomin <leroi.lists at gmail.com>:
>>> On 11 June 2015 at 16:36, Baptiste Clenet <bapclenet at gmail.com> wrote:
>>>> Hi,
>>>>
>>>> I've edited patches from Linux 3.18 to make the MT7628 work with Linux 4.0.
>>>> OpenWRT launches, I have access to the shell.
>>>> Next step, I configure the IP address with /etc/config/network and
>>>> /etc/init.d/network reload. Ifconfig shows me my new address IP.
>>>>
>>>> But, I can't connect via ssh to my board and if I reboot the board, I
>>>> get errors at boot:
>>>> [   10.230000] jffs2: jffs2_scan_inode_node(): CRC failed on node at
>>>> 0x004725bc: Read 0xffffffff, calculated 0x149094b5
>>>> I would say it appears one hundred times with different calculated CRC.
>>>> and finally the last line is:
>>>> [   11.000000] jffs2: notice: (305) jffs2_build_xattr_subsystem:
>>>> complete building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan)
>>>> and 0 of xref (0 dead, 0 orphan) found.
>>>>
>>>>
>>>> Then, I'm able to access to the shell but I still can't connect via
>>>> ssh. The board constantly reports:
>>>>
>>>> [ 2410.010000] ralink_soc_eth 10100000.ethernet eth0: transmit timed out
>>>> [ 2410.020000] ralink_soc_eth 10100000.ethernet eth0: dma_cfg:00000055
>>>> [ 2410.030000] ralink_soc_eth 10100000.ethernet eth0: tx_ring=0,
>>>> base=00dce000, max=128, ctx=126, dtx=126, fdx=123
>>>> [ 2410.050000] ralink_soc_eth 10100000.ethernet eth0: rx_ring=0,
>>>> base=01a36000, max=128, calc=121, drx=54
>>>> [ 2415.010000] ralink_soc_eth 10100000.ethernet eth0: transmit timed out
>>>> [ 2415.020000] ralink_soc_eth 10100000.ethernet eth0: dma_cfg:00000055
>>>> [ 2415.030000] ralink_soc_eth 10100000.ethernet eth0: tx_ring=0,
>>>> base=00dce000, max=128, ctx=126, dtx=126, fdx=123
>>>> [ 2415.050000] ralink_soc_eth 10100000.ethernet eth0: rx_ring=0,
>>>> base=01a36000, max=128, calc=121, drx=60
>>>>
>>>> It seems to be related to ethernet driver. Does anyone know those errors?
>>>>
>>>
>>> I have the "transmit queue time out" error on ar71xx with 4.0.5 also.
>>> Situation is very similar because ralink and ar71xx ethernet drivers
>>> are maintained in OpenWrt only.
>>> I believe it is related to recent timer/clock changes in kernel (in
>>> 3.19 AFAIK). But I don't know neither timers nor network Linux stack
>>> so well to tell what/where is the problem exactly.
>>>
>>> If somebody with more experience could point to a possible place to
>>> look at that would be awesome.
>>>
>>>
>>> Regards,
>>> Roman
>>
>> Ok, let's see if someone can bring his knowledge on those parts and help us.
>> Thanks
>>
>> Baptiste
>
>
> I'm adding some details about the bug. after reloading
> /etc/init.d/network (with an IP modified), WATCHDOG raises an error:
>
> root at OpenWrt:/# [ 6426.010000] ------------[ cut here ]------------
> [ 6426.010000] WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:303
> dev_watchdog+0x1d8/0x25c()
> [ 6426.030000] NETDEV WATCHDOG: eth0 (ralink_soc_eth): transmit queue
> 0 timed out

yes, exactly the same issue here with ar71xx:
http://p.tet.rtu.lv/pbzn5sspm/wvtsep/raw
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