netdev - RE: [PATCH v2] vmxnet3: Enable GRO support.

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Message-ID: <03E840D17E263A48A5766AD576E0423A0129262C4F@exch-mbx-111.vmware.com>
Date:	Fri, 24 Jun 2011 18:43:25 -0700
From:	Scott Goldman <scottjg@...are.com>
To:	Jesse Gross <jesse@...ira.com>, David Miller <davem@...emloft.net>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Shreyas Bhatewara <sbhatewara@...are.com>,
	VMware PV-Drivers <pv-drivers@...are.com>
Subject: RE: [PATCH v2] vmxnet3: Enable GRO support.


Thanks again.

> When receiving packets from another guest on the same hypervisor, it's
> generally possible to receive large packets because no segmentation is
> necessary and these packets are handled by LRO.  However, when doing
> routing or bridging we must disable LRO and lose this benefit.  In
> these cases GRO can still be used and it is very effective because the
> packets which are segmented in the hypervisor are received very close
> together and can easily be merged.
> 
> CC: Shreyas Bhatewara <sbhatewara@...are.com>
> CC: Scott Goldman <scottjg@...are.com>
> CC: VMware PV-Drivers <pv-drivers@...are.com>
> Signed-off-by: Jesse Gross <jesse@...ira.com>
Signed-off-by: Scott J. Goldman <scottjg@...are.com>
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