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ixgbe: Fix handling of NAPI budget when multiple queues are enabled per vector

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This patch corrects an issue in which the polling routine would increase
the budget for Rx to at least 1 per queue if multiple queues were present.
This would result in Rx packets being processed when the budget was 0 which
is meant to indicate that no Rx can be handled.

Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Darin Miller <darin.j.miller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck 2015-09-22 14:35:41 -07:00 committed by Jeff Kirsher
parent 9f87298647
commit 5d6002b7b8
1 changed files with 2 additions and 1 deletions
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drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
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@ -2783,7 +2783,8 @@ int ixgbe_poll(struct napi_struct *napi, int budget)
ixgbe_for_each_ring(ring, q_vector->tx)
clean_complete &= !!ixgbe_clean_tx_irq(q_vector, ring);
if (!ixgbe_qv_lock_napi(q_vector))
/* Exit if we are called by netpoll or busy polling is active */
if ((budget <= 0) || !ixgbe_qv_lock_napi(q_vector))
return budget;
/* attempt to distribute budget to each queue fairly, but don't allow