tree 9693367bb0c6fa3cd3c66e5215915582ec518038
parent 73c4b7cdd25a8a769baf6dae5bc498400a9ddd93
author Alexander Duyck <alexander.h.duyck@intel.com> 1289964417 -0800
committer Jeff Kirsher <jeffrey.t.kirsher@intel.com> 1289964417 -0800

ixgbe: Disable RSC when ITR setting is too high to allow RSC

RSC will flush its descriptors every time the interrupt throttle timer
expires.  In addition there are known issues with RSC when the rx-usecs
value is set too low.  As such we are forced to clear the RSC_ENABLED bit
and reset the adapter when the rx-usecs value is set too low.

However we do not need to clear the NETIF_F_LRO flag because it is used to
indicate that the user wants to leave the LRO feature enabled, and in fact
with this change we will now re-enable RSC as soon as the rx-usecs value is
increased and the flag is still set.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>