ifcfg-ethX ETHTOOL_OPTS

# ethtool -g eth3
Ring parameters for eth3:
Pre-set maximums:
RX:     4096
RX Mini:    0
RX Jumbo:   0
TX:     4096
Current hardware settings:
RX:     256
RX Mini:    0
RX Jumbo:   0
TX:     256

# ethtool -k eth3 | grep generic-receive-offload
generic-receive-offload: on

# cat /etc/sysconfig/network-scripts/ifcfg-eth3 | grep ETHT
ETHTOOL_OPTS="-K {DEVICE} gro off"
ETHTOOL_OPTS="{ETHTOOL_OPTS} ; -G {DEVICE} rx 4096 "
ETHTOOL_OPTS="{ETHTOOL_OPTS} ; -G ${DEVICE} tx 4096 "

# /etc/init.d/network restart
# ethtool -g eth3
Ring parameters for eth3:
Pre-set maximums:
RX:     4096
RX Mini:    0
RX Jumbo:   0
TX:     4096
Current hardware settings:
RX:     4096
RX Mini:    0
RX Jumbo:   0
TX:     4096
# ethtool -k eth3 | grep generic-receive-offload
generic-receive-offload: off

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