"Cannot set device ring parameters: Operation not supported"

Question

I'm trying to change the RX and TX for an HP BL460C server by using ethtool and get the following:

ethtool -G eth0 rx 4078 tx 4078
Cannot set device ring parameters: Operation not supported

My driver information is as follows:

driver: be2net                                                       
version: 10.2r                                                      
firmware-version: 12.0.1110.11 
bus-info: 0000:06:00.0                                              
supports-statistics: yes                                            
supports-test: yes                                                  
supports-eeprom-access: yes                                         
supports-register-dump: yes                                         
supports-priv-flags: no`

CentOS release 6.6

The adjustments are needed for a multicast application we are running on this server.

ewwhite · Answer

Can you add the parameters to the interface configuration files and reboot?
That would be adding a line like the following to the /etc/sysconfig/network-scripts/ifcfg-ethX files.

ETHTOOL_OPTS="-G ${DEVICE} rx 4078 tx 4078"

Another option is passing the values to the be2net module in the modprobe setup. Here's an example.

insmod be2net.ko rx_frag_size=value or in /etc/modprocbe.d/be2net.conf:

options be2net rx_frag_size=value

Also see HPE's advisory: https://support.hpe.com/hpsc/doc/public/display?docId=mmr_kc-0106342

"Cannot set device ring parameters: Operation not supported"

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