How can I increase tx queue number under ubuntu wan interface?

[pidda]

Dear all,

I want to increase the tx queue on ubuntu.

[email protected]:~$ ls /sys/class/net/wlp1s0/queues/
rx-0 tx-0
[email protected]:~$ sudo ip link set wlp1s0 numtxqueues 7

[email protected]:~$ echo $?
0
[email protected]:~$ ls /sys/class/net/wlp1s0/queues/
rx-0 tx-0
[email protected]:~$
Though the command execution is successfully, the tx queue is still one. It would be very helpful to point me to some doc which explains on tx queue.
Is this a hardware limit? or is there any way to increase it?