Hi Stijn,
> On Mar 1, 2017, at 21:28, Stijn Segers <francesco.borrom...@inventati.org> > wrote: > > Op wo, 1 mrt 2017 om 10:59 , schreef Sebastian Moeller <moell...@gmx.de>: >> Hi Stijn, >>> On Mar 1, 2017, at 10:46, Stijn Segers <francesco.borrom...@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@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@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 This is GSO > generic-receive-offload: on And this GRO so both seem to be still on, I do seem to remember that Linux will keep giant packets intact once assembled, so for testing you might want to disable GRO for all interfaces, to make sure no large meta-packet ever reaches cake… I also recall being flummoxed by the fact that the output of ethtool -k is not identical with what to give to ethtool -K... Best Regards > 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] > _______________________________________________ Lede-dev mailing list Lede-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/lede-dev
