netdev - Re: [PATCH v3 5/7] net: Add GSO support for UDP tunnels with checksum

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Message-ID: <CAJZOPZJTfJtuhWZ91_KOZxr=V7J7KPX5OGeR_7rY52iOjWcEVw@mail.gmail.com>
Date:	Sat, 27 Sep 2014 00:05:19 +0300
From:	Or Gerlitz <or.gerlitz@...il.com>
To:	Tom Herbert <therbert@...gle.com>
Cc:	David Miller <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH v3 5/7] net: Add GSO support for UDP tunnels with checksum

On Thu, Jun 5, 2014 at 3:20 AM, Tom Herbert <therbert@...gle.com> wrote:
>
> Added a new netif feature for GSO_UDP_TUNNEL_CSUM. This indicates
> that a device is capable of computing the UDP checksum in the
> encapsulating header of a UDP tunnel.



Tom,

Do we have upstream driver that supports GSO_UDP_TUNNEL_CSUM? did you
had such driver/patch while doing this patches? when a driver
advertizes that bit, should they look over the xmit path on the new
encap_hdr_csum bit?

Or.


>
>  include/linux/netdev_features.h |  1 +
>  include/linux/skbuff.h          |  2 ++
>  net/ipv4/af_inet.c              |  1 +
>  net/ipv4/tcp_offload.c          |  1 +
>  net/ipv4/udp.c                  | 40 +++++++++++++++++++---------------------
>  net/ipv4/udp_offload.c          |  4 +++-
>  net/ipv6/ip6_offload.c          |  1 +
>  net/ipv6/udp_offload.c          |  4 +++-
>  8 files changed, 31 insertions(+), 23 deletions(-)
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