this code answers my question, but why?

n->net_conf.tx_queue_size = MIN(virtio_net_max_tx_queue_size(n),
                                    n->net_conf.tx_queue_size);
n->net_conf.tx_queue_size is 256 if peer->info->type != 
NET_CLIENT_DRIVER_VHOST_USER.








At 2021-12-30 17:06:05, "longguang.yue" <libv...@163.com> wrote:
>Hi, all:
>
>my environment is qemu-kvm-6.0.0, 4.18.0-240, libvirt 7.4.0.  vm is configured 
>like this   queues='4' rx_queue_size='1024' tx_queue_size='1024'.
>inside vm  i can not change nic's ring size. 
>changing tx leads to error  'Cannot set device ring parameters: Operation not 
>supported'.  
>changing rx leads to error 'rx unmodified, ignoring. no ring parameters 
>changed, aborting'
>
>how to make it work and confirm what current value is?
>
>thanks

Reply via email to