netdev - Re: [PATCH net-next 1/2] openvswitch: Add conntrack limit netlink definition

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Date:   Mon, 16 Apr 2018 16:52:45 -0700
From:   Gregory Rose <gvrose8192@...il.com>
To:     Yi-Hung Wei <yihung.wei@...il.com>, netdev@...r.kernel.org
Subject: Re: [PATCH net-next 1/2] openvswitch: Add conntrack limit netlink
 definition

On 4/16/2018 11:15 AM, Yi-Hung Wei wrote:
> Define netlink messages and attributes to support user kernel
> communication that using conntrack limit feature.
s/using/uses the/

>
> Signed-off-by: Yi-Hung Wei <yihung.wei@...il.com>
> ---
>   include/uapi/linux/openvswitch.h | 62 ++++++++++++++++++++++++++++++++++++++++
>   1 file changed, 62 insertions(+)
>
> diff --git a/include/uapi/linux/openvswitch.h b/include/uapi/linux/openvswitch.h
> index 713e56ce681f..ca63c16375ce 100644
> --- a/include/uapi/linux/openvswitch.h
> +++ b/include/uapi/linux/openvswitch.h
> @@ -937,4 +937,66 @@ enum ovs_meter_band_type {
>   
>   #define OVS_METER_BAND_TYPE_MAX (__OVS_METER_BAND_TYPE_MAX - 1)
>   
> +/* Conntrack limit */
> +#define OVS_CT_LIMIT_FAMILY  "ovs_ct_limit"
> +#define OVS_CT_LIMIT_MCGROUP "ovs_ct_limit"
> +#define OVS_CT_LIMIT_VERSION 0x1
> +
> +enum ovs_ct_limit_cmd {
> +	OVS_CT_LIMIT_CMD_UNSPEC,
> +	OVS_CT_LIMIT_CMD_SET,		/* Add or modify ct limit. */
> +	OVS_CT_LIMIT_CMD_DEL,		/* Delete ct limit. */
> +	OVS_CT_LIMIT_CMD_GET		/* Get ct limit. */
> +};
> +
> +enum ovs_ct_limit_attr {
> +	OVS_CT_LIMIT_ATTR_UNSPEC,
> +	OVS_CT_LIMIT_ATTR_OPTION,	/* Nested OVS_CT_LIMIT_ATTR_* */
> +	__OVS_CT_LIMIT_ATTR_MAX
> +};
> +
> +#define OVS_CT_LIMIT_ATTR_MAX (__OVS_CT_LIMIT_ATTR_MAX - 1)
> +
> +/**
> + * @OVS_CT_ZONE_LIMIT_ATTR_SET_REQ: Contains either
> + * OVS_CT_ZONE_LIMIT_ATTR_DEFAULT_LIMIT or a pair of
> + * OVS_CT_ZONE_LIMIT_ATTR_ZONE and OVS_CT_ZONE_LIMIT_ATTR_LIMIT.
> + * @OVS_CT_ZONE_LIMIT_ATTR_DEL_REQ: Contains OVS_CT_ZONE_LIMIT_ATTR_ZONE.
> + * @OVS_CT_ZONE_LIMIT_ATTR_GET_REQ: Contains OVS_CT_ZONE_LIMIT_ATTR_ZONE.
> + * @OVS_CT_ZONE_LIMIT_ATTR_GET_RLY: Contains either
> + * OVS_CT_ZONE_LIMIT_ATTR_DEFAULT_LIMIT or a triple of
> + * OVS_CT_ZONE_LIMIT_ATTR_ZONE, OVS_CT_ZONE_LIMIT_ATTR_LIMIT and
> + * OVS_CT_ZONE_LIMIT_ATTR_COUNT.
> + */
> +enum ovs_ct_limit_option_attr {
> +	OVS_CT_LIMIT_OPTION_ATTR_UNSPEC,
> +	OVS_CT_ZONE_LIMIT_ATTR_SET_REQ,	/* Nested OVS_CT_ZONE_LIMIT_ATTR_*
> +					 * attributes. */
> +	OVS_CT_ZONE_LIMIT_ATTR_DEL_REQ,	/* Nested OVS_CT_ZONE_LIMIT_ATTR_*
> +					 * attributes. */
> +	OVS_CT_ZONE_LIMIT_ATTR_GET_REQ,	/* Nested OVS_CT_ZONE_LIMIT_ATTR_*
> +					 * attributes. */
> +	OVS_CT_ZONE_LIMIT_ATTR_GET_RLY,	/* Nested OVS_CT_ZONE_LIMIT_ATTR_*
> +					 * attributes. */
> +	__OVS_CT_LIMIT_OPTION_ATTR_MAX
> +};
> +
> +#define OVS_CT_LIMIT_OPTION_ATTR_MAX (__OVS_CT_LIMIT_OPTION_ATTR_MAX - 1)
> +
> +enum ovs_ct_zone_limit_attr {
> +	OVS_CT_ZONE_LIMIT_ATTR_UNSPEC,
> +	OVS_CT_ZONE_LIMIT_ATTR_DEFAULT_LIMIT,	/* u32 default conntrack limit
> +						 * for all zones. */
> +	OVS_CT_ZONE_LIMIT_ATTR_ZONE,		/* u16 conntrack zone id. */
> +	OVS_CT_ZONE_LIMIT_ATTR_LIMIT,		/* u32 max number of conntrack
> +						 * entries allowed in the
> +						 * corresponding zone. */
> +	OVS_CT_ZONE_LIMIT_ATTR_COUNT,		/* u32 number of conntrack
> +						 * entries in the corresponding
> +						 * zone. */
> +	__OVS_CT_ZONE_LIMIT_ATTR_MAX
> +};
> +
> +#define OVS_CT_ZONE_LIMIT_ATTR_MAX (__OVS_CT_ZONE_LIMIT_ATTR_MAX - 1)
> +
>   #endif /* _LINUX_OPENVSWITCH_H */

Is this something that other users  can use?  I searched around and 
didn't see any mention
of it for other kernel users but perhaps I missed something?

Thanks,

- Greg