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ixgbe: check return value of napi_complete_done() 

The NIC driver should only enable interrupts when napi_complete_done()
returns true. This patch adds the check for ixgbe.

Cc: stable@vger.kernel.org # 4.10+
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Song Liu 2018-10-03 11:30:35 -07:00 committed by David S. Miller
parent 2cc543f5cd
commit 4233cfe6ec
1 changed files with 7 additions and 5 deletions
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12
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
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@ -3196,11 +3196,13 @@ int ixgbe_poll(struct napi_struct *napi, int budget)
return budget; return budget;
/* all work done, exit the polling mode */ /* all work done, exit the polling mode */
napi_complete_done(napi, work_done); if (likely(napi_complete_done(napi, work_done))) {
if (adapter->rx_itr_setting & 1) if (adapter->rx_itr_setting & 1)
ixgbe_set_itr(q_vector); ixgbe_set_itr(q_vector);
if (!test_bit(__IXGBE_DOWN, &adapter->state)) if (!test_bit(__IXGBE_DOWN, &adapter->state))
ixgbe_irq_enable_queues(adapter, BIT_ULL(q_vector->v_idx)); ixgbe_irq_enable_queues(adapter,
BIT_ULL(q_vector->v_idx));
}
return min(work_done, budget - 1); return min(work_done, budget - 1);
} }