Assigning Parameters for Physical NIC Devices in bf_switchd.

[PLizolan]

Hello,
Does anyone know if there is any way to pass operating parameters (mtu, bsize ...) to the network card to be linked in the BF_Switchd through the .json file for port configuration?
If yes, how?
Or if there is any other way to do this with bf_Switchd running.
Note: I use an Intel 82599ES 10-Gigabit SFI/SFP+ network card linked in 'link' mode.
My port configuration is the one below, I believe I can assign these parameters in "link_port_attributes", but how/which ones are accepted?
{
"ports": [
{
"dev_port": 0,
"port_name": "LINK0",
"mempool_name": "MEMPOOL0",
"port_dir": "default",
"port_in_id": 0,
"pipe_in": "pipe",
"port_out_id": 0,
"pipe_out": "pipe",
"port_type": "link",
"net_port" : 0,
"link_port_attributes": {
"pcie_bdf": "0000:b3:00.0"
}
}
]

Grateful.