linux – How to increase the size of the RX queue on a netdev erspan

As a new topic, I can not comment on a similar topic:
How to change the queue length of a Linux network interface?

How can I increase the size of the RX queue on a netdev type erspan to prevent receiving overflow errors on this one? I understand that this netdev type is similar to gre (in addition to GRE encapsulation, it also handles ERSPAN encapsulation):

*[root@sniffer2 centos]# link ip add dev erspan1 mtu 9100 type erspan seq key 1 erspan_ver 1
[root@sniffer2 centos]# ip link set up erspan1
[root@sniffer2 centos]# ifconfig erspan1
erspan1: flags = 4163 mtu 9100
inet6 fe80 :: 14f6: cbff: fecb: prefixlen 46db 64 scopeid 0x20
ether 16: f6: cb: cb: 46: db txqueuelen 1000 (Ethernet)
RX packages 2235281 bytes 311850140 (297.4 MB)
RX errors 4042724 dropped 2323 overruns 4042724 image 0
TX packets 0 bytes 0 (0.0 B)
TX 5 errors missed 0 exceedances 0 carrier 0 collisions 0

[root@sniffer2 centos]#
[root@sniffer2 centos]# cat / proc / sys / net / core / netdev_max_backlog
[root@sniffer2 centos]# cat / proc / sys / net / core / rmem_default
[root@sniffer2 centos]# ethtool -g erspan1
Ringtone settings for erspan1:
Unable to get device ring settings: unsupported operation *

Thank you very much in advance …