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e1000: remove CRC bytes from measured packet length 

After removing the hardware CRC stripping which causes problems with
SOL and related issues, we need to compensate for this changed size.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
This commit is contained in:
Auke Kok 2006-07-14 16:14:34 -07:00 committed by Auke Kok
parent d3d9e484b2
commit f235a2abb2
1 changed files with 9 additions and 1 deletions
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10
drivers/net/e1000/e1000_main.c
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@ -3673,6 +3673,9 @@ e1000_clean_rx_irq(struct e1000_adapter *adapter,
length = le16_to_cpu(rx_desc->length);
/* adjust length to remove Ethernet CRC */
length -= 4;
if (unlikely(!(status & E1000_RXD_STAT_EOP))) {
/* All receives must fit into a single buffer */
E1000_DBG("%s: Receive packet consumed multiple"
@ -3877,8 +3880,9 @@ e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
pci_dma_sync_single_for_device(pdev,
ps_page_dma->ps_page_dma[0],
PAGE_SIZE, PCI_DMA_FROMDEVICE);
/* remove the CRC */
l1 -= 4;
skb_put(skb, l1);
length += l1;
goto copydone;
} /* if */
}
@ -3897,6 +3901,10 @@ e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
skb->truesize += length;
}
/* strip the ethernet crc, problem is we're using pages now so
* this whole operation can get a little cpu intensive */
pskb_trim(skb, skb->len - 4);
copydone:
e1000_rx_checksum(adapter, staterr,
le16_to_cpu(rx_desc->wb.lower.hi_dword.csum_ip.csum), skb);