Hi, Murali Karicheri <m-kariche...@ti.com> writes:
> Hi Vinicius, > > On 10/11/2019 04:12 PM, Vinicius Costa Gomes wrote: >> Hi Murali, >> >> Murali Karicheri <m-kariche...@ti.com> writes: >> >>> Hi, >>> >>> I am testing the taprio (802.1Q Time Aware Shaper) as part of my >>> pre-work to implement taprio hw offload and test. >>> >>> I was able to configure tap prio on my board and looking to do >>> some traffic test and wondering how to play with the tc command >>> to direct traffic to a specfic queue. For example I have setup >>> taprio to create 5 traffic classes as shows below;- >>> >>> Now I plan to create iperf streams to pass through different >>> gates. Now how do I use tc filters to mark the packets to >>> go through these gates/queues? I heard about skbedit action >>> in tc filter to change the priority field of SKB to allow >>> the above mapping to happen. Any example that some one can >>> point me to? >> >> What I have been using for testing these kinds of use cases (like iperf) >> is to use an iptables rule to set the priority for some kinds of traffic. >> >> Something like this: >> >> sudo iptables -t mangle -A POSTROUTING -p udp --dport 7788 -j CLASSIFY >> --set-class 0:3 > Let me try this. Yes. This is what I was looking for. I was trying > something like this and I was getting an error > > tc filter add dev eth0 parent 100: protocol ip prio 10 u32 match ip > dport 10000 0xffff flowid 100:3 > RTNETLINK answers: Operation not supported > We have an error talking to the kernel, -1 Hmm, taprio (or mqprio for that matter) doesn't support tc filter blocks, so this won't work for those qdiscs. I never thought about adding support for it, it looks very interesting. Thanks for pointing this out. I will add this to my todo list, but anyone should feel free to beat me to it :-) Cheers, -- Vinicius
