[LEDE-DEV] SUNXI: Network problem with kernel 4.9.51

[Lucian Cristian]

On 26.09.2017 12:25, Gerhard Bertelsmann wrote:
> Hi Hauke,
[snip]
>>> root at LEDE:~# ping -qc 100 192.168.0.9
>>> PING 192.168.0.9 (192.168.0.9): 56 data bytes
>>>
>>> --- 192.168.0.9 ping statistics ---
>>> 100 packets transmitted, 100 packets received, 0% packet loss
>>> round-trip min/avg/max = 0.363/0.514/0.813 ms
>>>
>>>
>>> root at LEDE:~# iperf -c 192.168.0.9 -d
>>> ------------------------------------------------------------
>>> Server listening on TCP port 5001
>>> TCP window size: 85.3 KByte (default)
>>> ------------------------------------------------------------
>>> ------------------------------------------------------------
>>> Client connecting to 192.168.0.9, TCP port 5001
>>> TCP window size: 87.5 KByte (default)
>>> ------------------------------------------------------------
>>> [  5] local 192.168.0.159 port 54946 connected with 192.168.0.9 port 
>>> 5001
>>> [  4] local 192.168.0.159 port 5001 connected with 192.168.0.9 port 
>>> 52498
>>> [ ID] Interval       Transfer     Bandwidth
>>> [  5]  0.0-10.0 sec   695 MBytes   583 Mbits/sec
>>> [  4]  0.0-10.0 sec   330 MBytes   276 Mbits/sec
>>>
>>> I'm not an Uboot expert, maybe somebody else could migrate
>>> this parameter from the old Uboot to the new one.
>>>
>>> Regards
>>>
>>> Gerd
>>>
>>>
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ok, is easy, adding  +CONFIG_GMAC_TX_DELAY=1 to uboot defconfig improves 
somehow (at least on LIME2), now I have ~270mb on one upload in ~500mb 
on multiple streams, before this speed was random, most of the time 
worked bad, I'll ad a PR

but on reset, the speed will drop to about 50mb, removing the power and 
cold boot would make the board work to ~270mb again

regarding to stmmac backport, I applied only this 
https://git.lede-project.org/?p=lede/hauke/staging.git;a=commit;h=9a359a1c990207f74f3429db23f163d3370787b4 
and stmmac is crashing the kernel, I'll try with a clean tree to see if 
it happens again