network stack rate shaping queues

[Kent Dorfman]

A general question:

Do the network rate shaping queues apply to all network traffic in the
system, or just to the AF_INET address family?

What if we have other classes of network drivers (non ethernet) that
also use a BSD socket interface, but a different address family?  Are
those messages also subject to the rate shaping, or are they generally
FIFO to the driver queue?

My concern is specific  to the 4.x kernel.