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i40e/i40evf: fix bug when skb allocation fails

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If the skb allocation fails we should not continue using the skb
pointer.  Breaking out at the point of failure means that at the next
RX interrupt the driver will try the allocation again.

Change-ID: Iefaad69856ced7418bfd92afe55322676341f82e
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Jesse Brandeburg 2015-03-31 00:45:01 -07:00 committed by Jeff Kirsher
parent 1a2f62489b
commit 8b6ed9c202
2 changed files with 8 additions and 2 deletions
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5
drivers/net/ethernet/intel/i40e/i40e_txrx.c
View File

@ -1565,8 +1565,11 @@ static int i40e_clean_rx_irq_ps(struct i40e_ring *rx_ring, int budget)
if (likely(!skb)) {
skb = netdev_alloc_skb_ip_align(rx_ring->netdev,
rx_ring->rx_hdr_len);
if (!skb)
if (!skb) {
rx_ring->rx_stats.alloc_buff_failed++;
break;
}
/* initialize queue mapping */
skb_record_rx_queue(skb, rx_ring->queue_index);
/* we are reusing so sync this buffer for CPU use */

5
drivers/net/ethernet/intel/i40evf/i40e_txrx.c
View File

@ -1040,8 +1040,11 @@ static int i40e_clean_rx_irq_ps(struct i40e_ring *rx_ring, int budget)
if (likely(!skb)) {
skb = netdev_alloc_skb_ip_align(rx_ring->netdev,
rx_ring->rx_hdr_len);
if (!skb)
if (!skb) {
rx_ring->rx_stats.alloc_buff_failed++;
break;
}
/* initialize queue mapping */
skb_record_rx_queue(skb, rx_ring->queue_index);
/* we are reusing so sync this buffer for CPU use */