[LEDE-DEV] Cake SQM killing my DIR-860L - was: [17.01] Kernel: bump to 4.4.51

[Stijn Segers]

Op wo, 1 mrt 2017 om 10:59 , schreef Sebastian Moeller 
<moeller0 at gmx.de>:
> Hi Stijn,
> 
> 
>>  On Mar 1, 2017, at 10:46, Stijn Segers 
>> <francesco.borromini at inventati.org> wrote:
>> 
>>  Hi Baptiste,
>> 
>>  Thanks for your input. I found this thread [1] however which 
>> suggests offloading capabilities:
>> 
>>  "The GSW is found in all of the 1000mbit SoCs. it has 5 external 
>> ports,
>>  1-2 cpu ports and 1 further port that the internal HW offloading 
>> engine
>>  connects to. The switch core used is a MT7530, which also exists as 
>> a
>>  standalone chip. [...]"
>> 
>>  Johh, is there a way to disable offloading on MT7530?
> 
> If you run “ethtool -k $IFACE” ethtool should show you which 
> offloads the device supports and which can be toggled. Here is an 
> example from a wndr3700v2 (eth1 being the dedicated WAN interface not 
> connected to a switch)
> 
> root at router:~# ethtool -k eth1
> Features for eth1:
> rx-checksumming: off [fixed]
> tx-checksumming: off
> 	tx-checksum-ipv4: off [fixed]
> 	tx-checksum-ip-generic: off [fixed]
> 	tx-checksum-ipv6: off [fixed]
> 	tx-checksum-fcoe-crc: off [fixed]
> 	tx-checksum-sctp: off [fixed]
> scatter-gather: off
> 	tx-scatter-gather: off [fixed]
> 	tx-scatter-gather-fraglist: off [fixed]
> tcp-segmentation-offload: off
> 	tx-tcp-segmentation: off [fixed]
> 	tx-tcp-ecn-segmentation: off [fixed]
> 	tx-tcp6-segmentation: off [fixed]
> udp-fragmentation-offload: off [fixed]
> generic-segmentation-offload: off [requested on]
> generic-receive-offload: on
> large-receive-offload: off [fixed]
> rx-vlan-offload: off [fixed]
> tx-vlan-offload: off [fixed]
> ntuple-filters: off [fixed]
> receive-hashing: off [fixed]
> highdma: off [fixed]
> rx-vlan-filter: off [fixed]
> vlan-challenged: off [fixed]
> tx-lockless: off [fixed]
> netns-local: off [fixed]
> tx-gso-robust: off [fixed]
> tx-fcoe-segmentation: off [fixed]
> tx-gre-segmentation: off [fixed]
> tx-ipip-segmentation: off [fixed]
> tx-sit-segmentation: off [fixed]
> tx-udp_tnl-segmentation: off [fixed]
> fcoe-mtu: off [fixed]
> tx-nocache-copy: off
> loopback: off [fixed]
> rx-fcs: off [fixed]
> rx-all: off [fixed]
> tx-vlan-stag-hw-insert: off [fixed]
> rx-vlan-stag-hw-parse: off [fixed]
> rx-vlan-stag-filter: off [fixed]
> l2-fwd-offload: off [fixed]
> busy-poll: off [fixed]
> 
> Best Regards
> 	Sebastian
> 
> 
>> 
>>  Thanks!
>> 
>>  Stijn
>> 
>>  [1] https://lkml.org/lkml/2016/2/26/527
>> 
>>  _______________________________________________
>>  Lede-dev mailing list
>>  Lede-dev at lists.infradead.org
>>  http://lists.infradead.org/mailman/listinfo/lede-dev

Hi Sebastian,

That does indeed return a long list, but it looks like the things that 
Dave Taht suggested I disable are already disabled?

ethtool -K tso off gso off gro off

Of those, only gso shows as tx-gso-robust [off]: fixed...

# ethtool -k eth0
Features for eth0:
rx-checksumming: on
tx-checksumming: on
 tx-checksum-ipv4: on
 tx-checksum-ip-generic: off [fixed]
 tx-checksum-ipv6: on
 tx-checksum-fcoe-crc: off [fixed]
 tx-checksum-sctp: off [fixed]
scatter-gather: on
 tx-scatter-gather: on
 tx-scatter-gather-fraglist: off [fixed]
tcp-segmentation-offload: on
 tx-tcp-segmentation: on
 tx-tcp-ecn-segmentation: off [fixed]
 tx-tcp6-segmentation: on
udp-fragmentation-offload: off [fixed]
generic-segmentation-offload: on
generic-receive-offload: on
large-receive-offload: off [fixed]
rx-vlan-offload: off [fixed]
tx-vlan-offload: on
ntuple-filters: off [fixed]
receive-hashing: off [fixed]
highdma: off [fixed]
rx-vlan-filter: off [fixed]
vlan-challenged: off [fixed]
tx-lockless: off [fixed]
netns-local: off [fixed]
tx-gso-robust: off [fixed]
tx-fcoe-segmentation: off [fixed]
tx-gre-segmentation: off [fixed]
tx-ipip-segmentation: off [fixed]
tx-sit-segmentation: off [fixed]
tx-udp_tnl-segmentation: off [fixed]
fcoe-mtu: off [fixed]
tx-nocache-copy: off
loopback: off [fixed]
rx-fcs: off [fixed]
rx-all: off [fixed]
tx-vlan-stag-hw-insert: off [fixed]
rx-vlan-stag-hw-parse: off [fixed]
rx-vlan-stag-filter: off [fixed]
l2-fwd-offload: off [fixed]
busy-poll: off [fixed]