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fm10k: 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: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck 2015-09-22 14:35:35 -07:00 committed by Jeff Kirsher
parent a897a2adb6
commit 9f87298647
1 changed files with 4 additions and 0 deletions
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4
drivers/net/ethernet/intel/fm10k/fm10k_main.c
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@ -1428,6 +1428,10 @@ static int fm10k_poll(struct napi_struct *napi, int budget)
fm10k_for_each_ring(ring, q_vector->tx)
clean_complete &= fm10k_clean_tx_irq(q_vector, ring);
/* Handle case where we are called by netpoll with a budget of 0 */
if (budget <= 0)
return budget;
/* attempt to distribute budget to each queue fairly, but don't
* allow the budget to go below 1 because we'll exit polling
*/