• Ioana Ciocoi Radulescu's avatar
    dpaa2-eth: Use a single page per Rx buffer · 27c87486
    Ioana Ciocoi Radulescu authored
    
    
    Instead of allocating page fragments via the network stack,
    use the page allocator directly. For now, we consume one page
    for each Rx buffer.
    
    With the new memory model we are free to consider adding more
    XDP support.
    
    Performance decreases slightly in some IP forwarding cases.
    No visible effect on termination traffic. The driver memory
    footprint increases as a result of this change, but it is
    still small enough to not really matter.
    
    Another side effect is that now Rx buffer alignment requirements
    are naturally satisfied without any additional actions needed.
    Remove alignment related code, except in the buffer layout
    information conveyed to MC, as hardware still needs to know the
    alignment value we guarantee.
    
    Signed-off-by: default avatarIoana Ciornei <ioana.ciornei@nxp.com>
    Signed-off-by: default avatarIoana Radulescu <ruxandra.radulescu@nxp.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    27c87486