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[PATCH] e1000: disable TSO on the 82544 with slab debugging 

CONFIG_DEBUG_SLAB changes alignments of the data structures the slab
allocators return. These break certain workarounds for TSO on the 82544.
Since DEBUG_SLAB is relatively rare and not used for performance sensitive
cases, the simplest fix is to disable TSO in this special situation.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
hifive-unleashed-5.1
Jesse Brandeburg 2006-12-15 10:34:46 +01:00 committed by Jeff Garzik
parent 3d5460a0ba
commit 72f3ab7462
1 changed files with 6 additions and 0 deletions
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6
drivers/net/e1000/e1000_main.c
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@ -911,6 +911,12 @@ e1000_probe(struct pci_dev *pdev,
(adapter->hw.mac_type != e1000_82547))
netdev->features |= NETIF_F_TSO;
#ifdef CONFIG_DEBUG_SLAB
/* 82544's work arounds do not play nicely with DEBUG SLAB */
if (adapter->hw.mac_type == e1000_82544)
netdev->features &= ~NETIF_F_TSO;
#endif
#ifdef NETIF_F_TSO6
if (adapter->hw.mac_type > e1000_82547_rev_2)
netdev->features |= NETIF_F_TSO6;