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| author | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2006-03-02 18:21:40 -0800 |
|---|---|---|
| committer | root <root@jk-desktop.jf.intel.com> | 2006-03-02 18:21:40 -0800 |
| commit | dc7c6add3493cdc71475a006b7afc3732e55abd8 (patch) | |
| tree | 28e1c24d37dddd300a0c912414e7e2484dc6b2b9 | |
| parent | 8704163987882f8b989e8143ad1f87c6b7229a13 (diff) | |
| download | linux-dc7c6add3493cdc71475a006b7afc3732e55abd8.tar.gz | |
e1000: Add copybreak when using packet split
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
| -rw-r--r-- | drivers/net/e1000/e1000_main.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 431b03ee077e32..d641fbc7a6e168 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -3757,6 +3757,35 @@ e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, /* Good Receive */ skb_put(skb, length); + { + /* this looks ugly, but it seems compiler issues make it + more efficient than reusing j */ + int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); + + /* page alloc/put takes too long and effects small packet + * throughput, so unsplit small packets and save the alloc/put*/ + if (l1 && ((length + l1) < E1000_CB_LENGTH)) { + u8 *vaddr; + /* there is no documentation about how to call + * kmap_atomic, so we can't hold the mapping + * very long */ + pci_dma_sync_single_for_cpu(pdev, + ps_page_dma->ps_page_dma[0], + PAGE_SIZE, + PCI_DMA_FROMDEVICE); + vaddr = kmap_atomic(ps_page->ps_page[0], + KM_SKB_DATA_SOFTIRQ); + memcpy(skb->tail, vaddr, l1); + kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ); + pci_dma_sync_single_for_device(pdev, + ps_page_dma->ps_page_dma[0], + PAGE_SIZE, PCI_DMA_FROMDEVICE); + skb_put(skb, l1); + length += l1; + goto copydone; + } /* if */ + } + for (j = 0; j < adapter->rx_ps_pages; j++) { if (!(length = le16_to_cpu(rx_desc->wb.upper.length[j]))) break; @@ -3771,6 +3800,7 @@ e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, skb->data_len += length; } +copydone: e1000_rx_checksum(adapter, staterr, rx_desc->wb.lower.hi_dword.csum_ip.csum, skb); skb->protocol = eth_type_trans(skb, netdev); |