Each network device can be associated with a queuing discipline.
Queues are identified with the help of a 32 bit handle X:Y where X represents major number and Y represents the minor number ( which is equal to zero for all queuing disciplines).
The queue determines the way packets are enqueued for transmission on that device. E.g. FIFO.
Operations permitted on queues (defined in include/net/pkt_sched.h)
- Enqueue, Dequeue, Requeue, Drop, Init, Reset, Destroy,Dump