> Rx buf len is buffer length of each rx BD. Use ethtool -g command to get
> it, and ethtool -G command to set it, examples are as follow:
>
> 1. set rx buf len to 4096
> $ ethtool -G eth1 rx-buf-len 4096
>
> 2. get rx buf len
> $ ethtool -g eth1
> ...
> RX Buf Len: 4096
How does this interact with MTU? If i have an MTU of 1500, and i set
the rx-buf-len to 1000, can i expect all frames to the discarded?
Should the core return -EINVAL? Or do you think some hardware will
simply allocate two buffers and scatter/gather over them? Which
implies that drivers which cannot SG must check if the rx-buf-len is
less than the MTU and return -EINVAL?
Andrew
