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Date: Wed, 15 Mar 2023 21:13:29 -0700 From: Jakub Kicinski <kuba@...nel.org> To: Ronak Doshi <doshir@...are.com> Cc: Yunsheng Lin <linyunsheng@...wei.com>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "stable@...r.kernel.org" <stable@...r.kernel.org>, Pv-drivers <Pv-drivers@...are.com>, "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Guolin Yang <gyang@...are.com>, open list <linux-kernel@...r.kernel.org> Subject: Re: [PATCH net] vmxnet3: use gro callback when UPT is enabled On Thu, 16 Mar 2023 04:03:52 +0000 Ronak Doshi wrote: > > Calling netif_receive_skb() with NETIF_F_GRO bit set in netdev->features will cause > > confusion for user, IMHO. > As long as LRO is enabled and performed by ESXi (which it will do), I don’t think user cares for GRO. > Even if we use napi_gro_receive() for such case, it degrades the performance as unnecessary cycles > are spend on an already LRO'ed packet. Can you provide some numbers to illustrate what the slow down is?
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