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e1000: FIX: Disable Packet Split for non jumbo frames 

Allocations using alloc_page are taking too long for normal MTU, so
use LPE only for jumbo frames.

Signed-off-bu: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
This commit is contained in:
Jesse Brandeburg 2006-10-24 14:46:01 -07:00 committed by Auke Kok
parent 225a5dbd68
commit e64d7d0209
1 changed files with 4 additions and 2 deletions
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6
drivers/net/e1000/e1000_main.c
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@ -1808,9 +1808,11 @@ e1000_setup_rctl(struct e1000_adapter *adapter)
* followed by the page buffers. Therefore, skb->data is
* sized to hold the largest protocol header.
*/
/* allocations using alloc_page take too long for regular MTU
* so only enable packet split for jumbo frames */
pages = PAGE_USE_COUNT(adapter->netdev->mtu);
if ((adapter->hw.mac_type > e1000_82547_rev_2) && (pages <= 3) &&
PAGE_SIZE <= 16384)
if ((adapter->hw.mac_type >= e1000_82571) && (pages <= 3) &&
PAGE_SIZE <= 16384 && (rctl & E1000_RCTL_LPE))
adapter->rx_ps_pages = pages;
else
adapter->rx_ps_pages = 0;