It still works absolutely like the previous bash version. Even the output is the same.
But it has 2 new features: --offset and --cpus. Also it uses argparse module and it's much easier to add new features now.

If you have 2 NICs with 4 queues and 1 socket with 8 cpus, you may be want
distribution like this:

eth0: [0, 1, 2, 3]
eth1: [4, 5, 6, 7]

so run:

rss-ladder eth0
rss-ladder --offset=4 eth1

If you have bugged NIC missing packets while RSS used on multiple CPUs
(it may be caused by DMA/RAM problems) you may use the following workaround:

bind all the NIC queues to one cpu, using:

rss-ladder eth0 --cpus 0

you also able to specify multiple cpus, e.g.:

rss-ladder eth0 --cpus 0 1

P.S: --cpus should be defined in the end of parameters, after device.