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authorThomas Jarosch <thomas.jarosch@intra2net.com>2011-05-16 06:28:15 +0000
committerGreg Kroah-Hartman <gregkh@suse.de>2011-05-23 11:23:03 -0700
commit3e514df46009fca47d5ab1971092a7ac7441f4eb (patch)
tree4bbf80faf4784ee103aa05f6d48c167dc7769a27 /Makefile
parentd84470b02ca28c2571064eeb12a5fa1aa0bed770 (diff)
vmxnet3: Fix inconsistent LRO state after initialization
commit ebde6f8acba92abfc203585198a54f47e83e2cd0 upstream. During initialization of vmxnet3, the state of LRO gets out of sync with netdev->features. This leads to very poor TCP performance in a IP forwarding setup and is hitting many VMware users. Simplified call sequence: 1. vmxnet3_declare_features() initializes "adapter->lro" to true. 2. The kernel automatically disables LRO if IP forwarding is enabled, so vmxnet3_set_flags() gets called. This also updates netdev->features. 3. Now vmxnet3_setup_driver_shared() is called. "adapter->lro" is still set to true and LRO gets enabled again, even though netdev->features shows it's disabled. Fix it by updating "adapter->lro", too. The private vmxnet3 adapter flags are scheduled for removal in net-next, see commit a0d2730c9571aeba793cb5d3009094ee1d8fda35 "net: vmxnet3: convert to hw_features". Patch applies to 2.6.37 / 2.6.38 and 2.6.39-rc6. Please CC: comments. Signed-off-by: Thomas Jarosch <thomas.jarosch@intra2net.com> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Makefile')
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