diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ixgb/ixgb_main.c | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c index c1dde795a83..365212b9e95 100644 --- a/drivers/net/ixgb/ixgb_main.c +++ b/drivers/net/ixgb/ixgb_main.c @@ -98,7 +98,7 @@ static bool ixgb_clean_rx_irq(struct ixgb_adapter *, int *, int); #else static bool ixgb_clean_rx_irq(struct ixgb_adapter *); #endif -static void ixgb_alloc_rx_buffers(struct ixgb_adapter *); +static void ixgb_alloc_rx_buffers(struct ixgb_adapter *, int); static void ixgb_tx_timeout(struct net_device *dev); static void ixgb_tx_timeout_task(struct work_struct *work); @@ -225,7 +225,7 @@ ixgb_up(struct ixgb_adapter *adapter) ixgb_configure_tx(adapter); ixgb_setup_rctl(adapter); ixgb_configure_rx(adapter); - ixgb_alloc_rx_buffers(adapter); + ixgb_alloc_rx_buffers(adapter, IXGB_DESC_UNUSED(&adapter->rx_ring)); /* disable interrupts and get the hardware into a known state */ IXGB_WRITE_REG(&adapter->hw, IMC, 0xffffffff); @@ -1906,6 +1906,7 @@ ixgb_clean_rx_irq(struct ixgb_adapter *adapter) struct ixgb_buffer *buffer_info, *next_buffer, *next2_buffer; u32 length; unsigned int i, j; + int cleaned_count = 0; bool cleaned = false; i = rx_ring->next_to_clean; @@ -1913,7 +1914,7 @@ ixgb_clean_rx_irq(struct ixgb_adapter *adapter) buffer_info = &rx_ring->buffer_info[i]; while (rx_desc->status & IXGB_RX_DESC_STATUS_DD) { - struct sk_buff *skb, *next_skb; + struct sk_buff *skb; u8 status; #ifdef CONFIG_IXGB_NAPI @@ -1926,7 +1927,7 @@ ixgb_clean_rx_irq(struct ixgb_adapter *adapter) skb = buffer_info->skb; buffer_info->skb = NULL; - prefetch(skb->data); + prefetch(skb->data - NET_IP_ALIGN); if (++i == rx_ring->count) i = 0; next_rxd = IXGB_RX_DESC(*rx_ring, i); @@ -1937,17 +1938,18 @@ ixgb_clean_rx_irq(struct ixgb_adapter *adapter) prefetch(next2_buffer); next_buffer = &rx_ring->buffer_info[i]; - next_skb = next_buffer->skb; - prefetch(next_skb); cleaned = true; + cleaned_count++; pci_unmap_single(pdev, buffer_info->dma, buffer_info->length, PCI_DMA_FROMDEVICE); + buffer_info->dma = 0; length = le16_to_cpu(rx_desc->length); + rx_desc->length = 0; if (unlikely(!(status & IXGB_RX_DESC_STATUS_EOP))) { @@ -2016,6 +2018,12 @@ rxdesc_done: /* clean up descriptor, might be written over by hw */ rx_desc->status = 0; + /* return some buffers to hardware, one at a time is too slow */ + if (unlikely(cleaned_count >= IXGB_RX_BUFFER_WRITE)) { + ixgb_alloc_rx_buffers(adapter, cleaned_count); + cleaned_count = 0; + } + /* use prefetched values */ rx_desc = next_rxd; buffer_info = next_buffer; @@ -2023,7 +2031,9 @@ rxdesc_done: rx_ring->next_to_clean = i; - ixgb_alloc_rx_buffers(adapter); + cleaned_count = IXGB_DESC_UNUSED(rx_ring); + if (cleaned_count) + ixgb_alloc_rx_buffers(adapter, cleaned_count); return cleaned; } @@ -2034,7 +2044,7 @@ rxdesc_done: **/ static void -ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter) +ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter, int cleaned_count) { struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; struct net_device *netdev = adapter->netdev; @@ -2051,7 +2061,7 @@ ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter) /* leave three descriptors unused */ - while (--cleancount > 2) { + while (--cleancount > 2 && cleaned_count--) { /* recycle! its good for you */ skb = buffer_info->skb; if (skb) { |