linux-kernel - Re: [PATCH net-next v5] net: openvswitch: IPv6: Add IPv6 extension header support

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Message-ID: <0d70b112-dc7a-7083-db8d-183782b8ef8f@6wind.com>
Date:   Thu, 23 Sep 2021 08:02:43 +0200
From:   Nicolas Dichtel <nicolas.dichtel@...nd.com>
To:     Toms Atteka <cpp.code.lv@...il.com>, netdev@...r.kernel.org
Cc:     pshelar@....org, davem@...emloft.net, kuba@...nel.org,
        dev@...nvswitch.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v5] net: openvswitch: IPv6: Add IPv6 extension
 header support

Le 20/09/2021 à 20:20, Toms Atteka a écrit :
> This change adds a new OpenFlow field OFPXMT_OFB_IPV6_EXTHDR and
> packets can be filtered using ipv6_ext flag.
> 
> Signed-off-by: Toms Atteka <cpp.code.lv@...il.com>
> ---
>  include/uapi/linux/openvswitch.h |  12 +++
>  net/openvswitch/flow.c           | 140 +++++++++++++++++++++++++++++++
>  net/openvswitch/flow.h           |  14 ++++
>  net/openvswitch/flow_netlink.c   |  24 +++++-
>  4 files changed, 189 insertions(+), 1 deletion(-)
> 
> diff --git a/include/uapi/linux/openvswitch.h b/include/uapi/linux/openvswitch.h
> index a87b44cd5590..dc6eb5f6399f 100644
> --- a/include/uapi/linux/openvswitch.h
> +++ b/include/uapi/linux/openvswitch.h
> @@ -346,6 +346,13 @@ enum ovs_key_attr {
>  #ifdef __KERNEL__
>  	OVS_KEY_ATTR_TUNNEL_INFO,  /* struct ip_tunnel_info */
>  #endif
> +
> +#ifndef __KERNEL__
> +	PADDING,  /* Padding so kernel and non kernel field count would match */
> +#endif
> +
> +	OVS_KEY_ATTR_IPV6_EXTHDRS,  /* struct ovs_key_ipv6_exthdr */
Naive question, why not moving OVS_KEY_ATTR_IPV6_EXTHDRS above
OVS_KEY_ATTR_TUNNEL_INFO?



Regards,
Nicolas