From 8b6ed9c202c0c7c179ab7a6cf8010ff0b63d2d4f Mon Sep 17 00:00:00 2001 From: Jesse Brandeburg Date: Tue, 31 Mar 2015 00:45:01 -0700 Subject: [PATCH] i40e/i40evf: fix bug when skb allocation fails 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 Tested-by: Jim Young Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_txrx.c | 5 ++++- drivers/net/ethernet/intel/i40evf/i40e_txrx.c | 5 ++++- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index 9b11f2e7e361..5a1a67733b88 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c @@ -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 */ diff --git a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c index 1b5ee4655b25..2be50a8d3671 100644 --- a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c @@ -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 */ -- 2.20.1