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fm10k: Do not assume budget will never be 0 for NAPI

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The netpoll path will call napi->poll with a budget of 0 in order to clean
the Tx rings only.  This change updates the fm10k driver so that it will
correctly support that instead of cleaning 1 Rx frame if a budget of 0 is
received.

Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Duyck 2015-05-01 10:34:38 -07:00 committed by David S. Miller
parent 4212b54331
commit 59486329b4
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/intel/fm10k/fm10k_main.c
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@ -610,7 +610,7 @@ static bool fm10k_clean_rx_irq(struct fm10k_q_vector *q_vector,
unsigned int total_bytes = 0, total_packets = 0; unsigned int total_bytes = 0, total_packets = 0;
u16 cleaned_count = fm10k_desc_unused(rx_ring); u16 cleaned_count = fm10k_desc_unused(rx_ring);
do { while (likely(total_packets < budget)) {
union fm10k_rx_desc *rx_desc; union fm10k_rx_desc *rx_desc;
/* return some buffers to hardware, one at a time is too slow */ /* return some buffers to hardware, one at a time is too slow */
@ -659,7 +659,7 @@ static bool fm10k_clean_rx_irq(struct fm10k_q_vector *q_vector,
/* update budget accounting */ /* update budget accounting */
total_packets++; total_packets++;
} while (likely(total_packets < budget)); }
/* place incomplete frames back on ring for completion */ /* place incomplete frames back on ring for completion */
rx_ring->skb = skb; rx_ring->skb = skb;