diff options
| author | Alexander Duyck <aduyck@mirantis.com> | 2015-09-22 14:35:41 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-15 08:27:38 +0200 |
| commit | 5c5989e0dde275bae778d6b4706cf606aca749cc (patch) | |
| tree | 45244fadce59362189b665d17b0431e29db7a316 /drivers/net/ethernet/intel | |
| parent | fe52e1255397ac4a1233db10e8f651847f992a4b (diff) | |
ixgbe: Fix handling of NAPI budget when multiple queues are enabled per vector
[ Upstream commit 5d6002b7b822c7423e75d4651e6790bfb5642b1b ]
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>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/ethernet/intel')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index aed8d029b23d..cd9b284bc83b 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -2786,7 +2786,8 @@ 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 |