From f235a2abb27b9396d2108dd2987fb8262cb508a3 Mon Sep 17 00:00:00 2001 From: Auke Kok Date: Fri, 14 Jul 2006 16:14:34 -0700 Subject: [PATCH] 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 Signed-off-by: Auke Kok --- drivers/net/e1000/e1000_main.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 1c6bcad5b9..0074a3a506 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -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); -- 2.39.5