netdev - Re: [PATCH net-next 2/4] bnxt_en: Use NETIF_F_GRO

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Date:   Mon, 04 Dec 2017 14:00:45 -0800
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Or Gerlitz <gerlitz.or@...il.com>,
        Michael Chan <michael.chan@...adcom.com>
Cc:     David Miller <davem@...emloft.net>,
        Linux Netdev List <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 2/4] bnxt_en: Use NETIF_F_GRO_HW.

On Mon, 2017-12-04 at 23:06 +0200, Or Gerlitz wrote:
> On Mon, Dec 4, 2017 at 8:11 PM, Michael Chan <michael.chan@...adcom.c
> om> wrote:
> 
> > All the logic is already in these 3 drivers in the tree.  You can
> > see
> > the additional logic in any of these drivers.  It's just that these
> > drivers have been using NETIF_F_GRO to turn on this mode in
> > hardware/firmware.
> 
> What happens for tcp encaped by some udp tunnel, does
> the HW know how to GRO that?

Yes it does, at least for common encaps (GRE, SIT, IPIP)