Hey all, Just some info in case someone runs into a similar problem in the future. It seems that you can use: ip link set <pf> vf <x> vlan <y> qos <z> to apply a QoS prio to a VF which translates directly to a user prio (which can then be moved between traffic classes with different rate limits). I can't seem to get this running with VGT, however, only with VST or specific VLAN ids. So I guess my problem is partially solved :-) Ideally, I would like to use VGT so the VF can transmit with any VLAN without any changes to the packet. Unfortunately, I can't seem to figure out if/how this works.
Best Regards, Jesper 2015-12-03 9:51 GMT+01:00 Jesper Wramberg <jesper.wramberg at gmail.com>: > Morning all, > > I was wondering if anyone know if/how you can rate limit a virtual > function on a ConnectX-3 ? > I am running OFED 3.1 and NIC FW 2.34.5060 (latest from dell). I have > tried the following with no luck: > > ip link set <pf> vf <x> rate <y> > mlnx_qos > mlnx_qcn > > The closest I have gotten was with mlnx_qos but it seems I can only rate > limit all traffic or no traffic (using traffic class 0). I tried > manipulating the TCs with tc_wrap but it seem that all traffic falls into > user priority 0 or something ? I also tried using different TX queues in > DPDK but the result was the same. The other commands seems to have no > effect at all. My mlx4_core.conf file looks like this: > > options mlx4_core port_type_array=2,2 num_vfs=3 probe_vf=3 > log_num_mgm_entry_size=-1 fast_drop=1 use_prio=1 enable_qos=1 > enable_vfs_qos=1 > > I simply tried to enable everything that might be relevant :-) > Alternatively, I also configured the transmitter using the VF to use one > specific VLAN with one specific priority. Unfortunately I couldn't seem to > rate limit based on VLAN or VLAN prio either :-( > > Best Regards, > Jesper >
