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authorEric W. Biederman2014-03-14 17:59:10 -0700
committerDavid S. Miller2014-03-14 22:52:47 -0400
commit390f86dfbd3e7c4579aaa88281149e1cbac88a2d (patch)
treed38247ec849e6897bab3d9cac4fe8abeecd5ec4a /drivers
parentb3529744b412e9870c9e10fef874e3bee2af1afa (diff)
i40e: Don't receive packets when the napi budget == 0
Processing any incoming packets with a with a napi budget of 0 is incorrect driver behavior. This matters as netpoll will shortly call drivers with a budget of 0 to avoid receive packet processing happening in hard irq context. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/intel/i40e/i40e_txrx.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
index daa3b295ff3d..88666adb0743 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
@@ -1302,6 +1302,9 @@ static int i40e_clean_rx_irq(struct i40e_ring *rx_ring, int budget)
u8 rx_ptype;
u64 qword;
+ if (budget <= 0)
+ return 0;
+
rx_desc = I40E_RX_DESC(rx_ring, i);
qword = le64_to_cpu(rx_desc->wb.qword1.status_error_len);
rx_status = (qword & I40E_RXD_QW1_STATUS_MASK) >>