• Paolo Abeni's avatar
    net: remove 'fallback' argument from dev->ndo_select_queue() · a350ecce
    Paolo Abeni authored
    
    
    After the previous patch, all the callers of ndo_select_queue()
    provide as a 'fallback' argument netdev_pick_tx.
    The only exceptions are nested calls to ndo_select_queue(),
    which pass down the 'fallback' available in the current scope
    - still netdev_pick_tx.
    
    We can drop such argument and replace fallback() invocation with
    netdev_pick_tx(). This avoids an indirect call per xmit packet
    in some scenarios (TCP syn, UDP unconnected, XDP generic, pktgen)
    with device drivers implementing such ndo. It also clean the code
    a bit.
    
    Tested with ixgbe and CONFIG_FCOE=m
    
    With pktgen using queue xmit:
    threads		vanilla 	patched
    		(kpps)		(kpps)
    1		2334		2428
    2		4166		4278
    4		7895		8100
    
     v1 -> v2:
     - rebased after helper's name change
    
    Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    a350ecce