Thank you for your fast reply and fix. I applied it and it still doesn't fix my problem. Some investigation and my problem seems to be that in tc_query_qdisc, the call to tc_transact returns error 2 (No such file or directory).
I try to trigger tc_load with the following script: tc qdisc del dev tun0 root tc qdisc add dev tun0 root sfq perturb 20 ovs-vsctl add-br br0 ovs-vsctl add-port br0 tun0 On 03/10/2015 11:04 PM, Ben Pfaff wrote: > On Tue, Mar 10, 2015 at 10:07:31PM +0100, Jonathan Vestin wrote: >> Ok, quite some things to do, I will fix the things you mentioned after >> sorting out the tc_load problem. >> >> Regarding tc_load: >> See the comment in: tc_parse_qdisc at 4414 to 4420: >> * To avoid the OOPS, we must not make a request that would attempt to dump >> * a "built-in" qdisc, that is, the default pfifo_fast qdisc or one of a >> * few others. There are a few ways that I can see to do this, but most of >> * them seem to be racy (and if you lose the race the kernel OOPSes). The >> * technique chosen here is to assume that any non-default qdisc that we >> * create will have a class with handle 1:0. The built-in qdiscs only have >> * a class with handle 0:0. >> >> I presume this means that in order for tc_load to be called, the qdisc >> *must* have one class, which classless qdiscs cannot have. Please correct me >> if I'm wrong. > That's a good point, thanks for pointing it out. > > I sent out a possible fix. Would you mind reviewing it and making > sure that it actually fixes the problem for you? The patch is at: > http://openvswitch.org/pipermail/dev/2015-March/052268.html _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
