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Date:	Sun, 2 Nov 2014 11:46:09 -0800
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	Tom Herbert <therbert@...gle.com>
Cc:	davem@...emloft.net, netdev@...r.kernel.org
Subject: Re: [PATCH iproute2 0/5] iproute: Add FOU and GUE configuration in
 ip

On Fri,  3 Oct 2014 08:55:13 -0700
Tom Herbert <therbert@...gle.com> wrote:

> This patch set adds support in iproute2 to configure FOU and GUE ports
> for receive, and using FOU or GUE with ip tunnels (IPIP, GRE, sit) on
> transmit.
> 
> A new ip subcommand "fou" has been added to configure FOU/GUE ports.
> For example:
> 
>   ip fou add port 5555 gue 
>   ip fou add port 9999 ipproto 4
> 
> The first command creates a GUE port, the second creates a direct FOU
> port for IPIP (receive payload is a assumed to be an IP packet).
> 
> To configure an IP tunnel to use FOU or GUE encap parameters have
> been added. For example:
> 
>   ip link add name tun1 type ipip remote 192.168.1.1 local 192.168.1.2 \
>      ttl 225 encap gue encap-sport auto encap-dport 7777 encap-csum
>   ip link add name tun2 type gre remote 192.168.1.1 local 192.168.1.2 \
>      ttl 225 encap fou encap-sport auto encap-dport 8888 encap-csum
> 
> The first command configures an IPIP tunnel to use GUE on transmit. The
> peer might be configured to receive GUE packets with the
> "ip fou add port 7777 gue" command.
> 
> The second configures a GRE tunnel to use FOU encapsulation. The
> peer might be configured to receive these packets with the
> "ip fou add port 8888 ipproto 47" command.
> 
> Tom Herbert (5):
>   iplink: Fix setting of -1 as ifindex
>   ip fou: Support to configure foo-over-udp RX
>   ip tunnel: Kernel uapi definitions for fou and gue
>   ip link ipip: Add support to configure FOU and GUE
>   ip link gre: Add support to configure FOU and GUE
> 
>  include/linux/fou.h       |  41 ++++++++++++
>  include/linux/if_tunnel.h |  17 +++++
>  ip/Makefile               |   3 +-
>  ip/ip.c                   |   3 +-
>  ip/ip_common.h            |   1 +
>  ip/ipfou.c                | 158 ++++++++++++++++++++++++++++++++++++++++++++++
>  ip/iplink.c               |   2 +-
>  ip/link_gre.c             |  89 ++++++++++++++++++++++++++
>  ip/link_iptnl.c           |  89 ++++++++++++++++++++++++++
>  9 files changed, 400 insertions(+), 3 deletions(-)
>  create mode 100644 include/linux/fou.h
>  create mode 100644 ip/ipfou.c

Please resubmit this patch series.
 1. It no longer applies cleanly
 2. Address the comments about port number and -1 ifindex patch
 3. Add man pages
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