[RFC] ethdev: add async flow connection tracking configuration

[Ori Kam]

Hi Suanming

> -----Original Message-----
> From: Suanming Mou <suanmingm at nvidia.com>
> Cc: dev at dpdk.org; Ori Kam <orika at nvidia.com>
> Subject: RE: [RFC] ethdev: add async flow connection tracking configuration
> 
> Ping...
> 
> > -----Original Message-----
> > From: Suanming Mou <suanmingm at nvidia.com>
> > Sent: Tuesday, August 9, 2022 9:26 PM
> > To: dev at dpdk.org
> > Cc: Ori Kam <orika at nvidia.com>; Xiaoyun Li <xiaoyun.li at intel.com>; Aman
> > Singh <aman.deep.singh at intel.com>; Yuying Zhang
> <yuying.zhang at intel.com>;
> > NBU-Contact-Thomas Monjalon (EXTERNAL) <thomas at monjalon.net>;
> Ferruh
> > Yigit <ferruh.yigit at xilinx.com>; Andrew Rybchenko
> > <andrew.rybchenko at oktetlabs.ru>
> > Subject: [RFC] ethdev: add async flow connection tracking configuration
> >
> > In queue based async flow engine, in order to optimize the flow insertion
> rate,
> > PMD can use the hints from application to have resources pre-allocate
> during
> > initialization phase for actions such as count/meter/aging.
> >
> > This commit adds the connection tracking action hints.
> >
> > Signed-off-by: Suanming Mou <suanmingm at nvidia.com>
> > ---
> >  app/test-pmd/cmdline_flow.c            | 10 ++++++++++
> >  doc/guides/rel_notes/release_22_11.rst |  6 ++++++
> >  lib/ethdev/rte_flow.h                  | 10 ++++++++++
> >  3 files changed, 26 insertions(+)
> >
> > diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
> index
> > 7f50028eb7..c9cbf381c4 100644
> > --- a/app/test-pmd/cmdline_flow.c
> > +++ b/app/test-pmd/cmdline_flow.c
> > @@ -219,6 +219,7 @@ enum index {
> >  	CONFIG_COUNTERS_NUMBER,
> >  	CONFIG_AGING_OBJECTS_NUMBER,
> >  	CONFIG_METERS_NUMBER,
> > +	CONFIG_CONN_TRACK_NUMBER,
> >
> >  	/* Indirect action arguments */
> >  	INDIRECT_ACTION_CREATE,
> > @@ -1081,6 +1082,7 @@ static const enum index next_config_attr[] = {
> >  	CONFIG_COUNTERS_NUMBER,
> >  	CONFIG_AGING_OBJECTS_NUMBER,
> >  	CONFIG_METERS_NUMBER,
> > +	CONFIG_CONN_TRACK_NUMBER,
> >  	END,
> >  	ZERO,
> >  };
> > @@ -2667,6 +2669,14 @@ static const struct token token_list[] = {
> >  		.args = ARGS(ARGS_ENTRY(struct buffer,
> >  					args.configure.port_attr.nb_meters)),
> >  	},
> > +	[CONFIG_CONN_TRACK_NUMBER] = {
> > +		.name = "conn_tracks_number",
> > +		.help = "number of connection trackings",
> > +		.next = NEXT(next_config_attr,
> > +			     NEXT_ENTRY(COMMON_UNSIGNED)),
> > +		.args = ARGS(ARGS_ENTRY(struct buffer,
> > +
> > 	args.configure.port_attr.nb_conn_tracks)),
> > +	},
> >  	/* Top-level command. */
> >  	[PATTERN_TEMPLATE] = {
> >  		.name = "pattern_template",
> > diff --git a/doc/guides/rel_notes/release_22_11.rst
> > b/doc/guides/rel_notes/release_22_11.rst
> > index 8c021cf050..c396bfca5f 100644
> > --- a/doc/guides/rel_notes/release_22_11.rst
> > +++ b/doc/guides/rel_notes/release_22_11.rst
> > @@ -55,6 +55,12 @@ New Features
> >       Also, make sure to start the actual text at the margin.
> >       =======================================================
> >
> > +* **Added configuration for asynchronous flow connection tracking.**
> > +
> > +  Added connection tracking action number hint to
> > + ``rte_flow_configure``  and ``rte_flow_info_get``.
> > +  PMD can prepare the connection tracking resources accroding to the
> hint.
> > +
> >
> >  Removed Items
> >  -------------
> > diff --git a/lib/ethdev/rte_flow.h b/lib/ethdev/rte_flow.h index
> > a79f1e7ef0..c2747abc55 100644
> > --- a/lib/ethdev/rte_flow.h
> > +++ b/lib/ethdev/rte_flow.h
> > @@ -4902,6 +4902,11 @@ struct rte_flow_port_info {
> >  	 * @see RTE_FLOW_ACTION_TYPE_METER
> >  	 */
> >  	uint32_t max_nb_meters;
> > +	/**
> > +	 * Maximum number connection trackings.
> > +	 * @see RTE_FLOW_ACTION_TYPE_CONNTRACK
> > +	 */
> > +	uint32_t max_nb_conn_tracks;
> >  };
> >
> >  /**
> > @@ -4971,6 +4976,11 @@ struct rte_flow_port_attr {
> >  	 * @see RTE_FLOW_ACTION_TYPE_METER
> >  	 */
> >  	uint32_t nb_meters;
> > +	/**
> > +	 * Number of connection trackings to configure.
> > +	 * @see RTE_FLOW_ACTION_TYPE_CONNTRACK
> > +	 */
> > +	uint32_t nb_conn_tracks;
> >  };
> >
> >  /**
> > --
> > 2.25.1

Acked-by: Ori Kam <orika at nvidia.com>
Thanks,
Ori