I run ethtool to query the offload features of a NIC using "ethtool -k" command, and the output is something as follows:
ethtool -k eth0
scatter-gather: on
tx-scatter-gather: on
tx-scatter-gather-fraglist: off **[fixed]**
I am wondering what the meaning of "[fixed]" is.
Those are the parameters that cant be changed, they are "fixed".
Here is an example. Let's take this output of ethtool :
If I want to change rx-vlan-offload I would do :
The result will be :
Now, let's try to modify a "fixed" parameter like "large-receive-offload" :
Hope this helps.