• Claudiu Manoil's avatar
    gianfar: Poll only active Rx queues · 6be5ed3f
    Claudiu Manoil authored
    Split the napi budget fairly among the active queues only, instead
    of dividing it by the total number of Rx queues assigned to the
    given interrupt group.
    Use the h/w indication field RXFi in rstat (receive status register)
    to identify the active rx queues from the current interrupt group
    (i.e. receive event occured on ring i, if ring i is part of the current
    interrupt group). This indication field in rstat, RXFi i=0..7,
    allows us to find out on which queues of the same interrupt group
    do we have incomming traffic once we entered the polling routine for
    the given interrupt group. After servicing the ring i, the corresponding
    bit RXFi will be written with 1 to clear the active queue indication for
    that ring.
    Signed-off-by: default avatarClaudiu Manoil <claudiu.manoil@freescale.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    6be5ed3f
gianfar.h 38.9 KB