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From: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
To: Ivan Malov <ivan.malov@oktetlabs.ru>, dev@dpdk.org
Cc: Thomas Monjalon <thomas@monjalon.net>, Ori Kam <orika@nvidia.com>,
	Xiaoyun Li <xiaoyun.li@intel.com>,
	Ferruh Yigit <ferruh.yigit@intel.com>,
	Ray Kinsella <mdr@ashroe.eu>
Subject: Re: [dpdk-dev] [PATCH v2] ethdev: add API to query proxy port to manage transfer flows
Date: Wed, 6 Oct 2021 10:47:47 +0300
Message-ID: <a3e516da-8550-a49a-e037-39e8cb38647b@oktetlabs.ru> (raw)
In-Reply-To: <20211005211045.29403-1-ivan.malov@oktetlabs.ru>

On 10/6/21 12:10 AM, Ivan Malov wrote:
> Not all DPDK ports in a given e-switch domain may have the

Search in the Internet does not provide e-switch as a shorter
form of "embedded switch". So, I agree with Thomas, it is
better to avoid it in the documentation. Especially taking
into account that there is a company with a similar name.

I.e. e-switch -> embedded switch

> privilege to manage "transfer" flows. Add an API to find a
> port with sufficient privileges by any port in the domain.
> 
> Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
> Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>

I have to review it better before, but it is better to do it
later than never.

> Acked-by: Ori Kam <orika@nvidia.com>
> ---
> Patch series [1] has reworked support for "transfer" flows.
> This allows to elaborate on the idea which first appeared
> in RFC [2]. Hence the patch in question.
> 
> net/sfc driver is going to support the new API. The
> corresponding patch is already in progress and will
> be provided in the course of this release cycle.
> 
> [1] https://patches.dpdk.org/project/dpdk/list/?series=19326
> [2] https://patches.dpdk.org/project/dpdk/list/?series=18737

[snip]

> diff --git a/doc/guides/rel_notes/release_21_11.rst b/doc/guides/rel_notes/release_21_11.rst
> index 0787baed8c..5de30fad9c 100644
> --- a/doc/guides/rel_notes/release_21_11.rst
> +++ b/doc/guides/rel_notes/release_21_11.rst
> @@ -67,6 +67,9 @@ New Features
>    Added macros ETH_RSS_IPV4_CHKSUM and ETH_RSS_L4_CHKSUM, now IPv4 and
>    TCP/UDP/SCTP header checksum field can be used as input set for RSS.
>  
> +* **Added an API to get a proxy port to manage "transfer" (e-switch) flows**

Let's avoid (e-switch) here. I guess initial definition of the
transfer intentionally avoid the term.

> +  A new API, ``rte_flow_pick_transfer_proxy()``, was added.
> +
>  * **Updated Broadcom bnxt PMD.**
>  
>    * Added flow offload support for Thor.
> diff --git a/lib/ethdev/rte_flow.c b/lib/ethdev/rte_flow.c
> index 647bbf91ce..15e978f7f7 100644
> --- a/lib/ethdev/rte_flow.c
> +++ b/lib/ethdev/rte_flow.c
> @@ -1270,3 +1270,25 @@ rte_flow_tunnel_item_release(uint16_t port_id,
>  				  RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
>  				  NULL, rte_strerror(ENOTSUP));
>  }
> +
> +int
> +rte_flow_pick_transfer_proxy(uint16_t port_id, uint16_t *proxy_port_id,
> +			     struct rte_flow_error *error)
> +{
> +	struct rte_eth_dev *dev = &rte_eth_devices[port_id];

Let's avoid initialization here since 'port_id' is not checked
yet to be correct. Let's assign dev below just before usage.

> +	const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
> +
> +	if (unlikely(ops == NULL))
> +		return -rte_errno;
> +
> +	if (likely(ops->pick_transfer_proxy != NULL)) {

Yes, I see that it is the stile in the file to expect
non-NULL callback, it is a bit unfair to say so when
just driver implements it. So, I suggest to remove it.
Also it is not an error or exception. It is documented
behaviour.

> +		return flow_err(port_id,
> +				ops->pick_transfer_proxy(dev, proxy_port_id,
> +							 error),
> +				error);
> +	}
> +
> +	*proxy_port_id = port_id;

I think code will have less lines and easier to read if
we revert above if condition, do the assignment and
return 0 from its body.

> +
> +	return 0;
> +}
> diff --git a/lib/ethdev/rte_flow.h b/lib/ethdev/rte_flow.h
> index f195aa7224..5405e2565a 100644
> --- a/lib/ethdev/rte_flow.h
> +++ b/lib/ethdev/rte_flow.h

[snip]

> @@ -4427,6 +4430,34 @@ rte_flow_tunnel_item_release(uint16_t port_id,
>  			     struct rte_flow_item *items,
>  			     uint32_t num_of_items,
>  			     struct rte_flow_error *error);
> +
> +/**

Don't we need experimental header here?

> + * Get a proxy port to manage "transfer" (e-switch) flows.

I suggest to have no (e-switch) here as well. "transfer" is
sufficient.

> + *
> + * Managing "transfer" flows requires that the user communicate them
> + * through a port which has the privilege to control the e-switch.

e-switch -> embedded switch

> + * For some vendors, all ports in a given e-switch domain have

e-switch -> embedded switch, or "switching domain"

> + * this privilege. For other vendors, it's only one port.
> + *
> + * This API indicates such a privileged port (a "proxy")
> + * for a given port in the same e-switch domain.

e-switch -> embedded switch, or "switching domain"

> + *
> + * @note
> + *   If the PMD serving @p port_id doesn't have the corresponding method
> + *   implemented, the API will return @p port_id via @p proxy_port_id.
> + *
> + * @param port_id
> + *   Indicates the port to get a "proxy" for
> + * @param[out] proxy_port_id
> + *   Indicates the "proxy" port

I should notice it earlier, but 'error' parameter description
is missing here.

> + *
> + * @return
> + *   0 on success, a negative error code otherwise
> + */
> +__rte_experimental
> +int
> +rte_flow_pick_transfer_proxy(uint16_t port_id, uint16_t *proxy_port_id,
> +			     struct rte_flow_error *error);
>  #ifdef __cplusplus
>  }
>  #endif


  reply	other threads:[~2021-10-06  7:47 UTC|newest]

Thread overview: 155+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-07 12:51 [dpdk-dev] [RFC PATCH] ethdev: clarify flow attribute and action port ID semantics Ivan Malov
2021-10-01 13:47 ` [dpdk-dev] [PATCH v1 00/12] ethdev: rework transfer flow API Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 01/12] ethdev: add ethdev item to " Andrew Rybchenko
2021-10-03 11:52     ` Ori Kam
2021-10-03 17:40       ` Ivan Malov
2021-10-03 21:09         ` Ori Kam
2021-10-04  0:00           ` Ivan Malov
2021-10-04 10:47             ` Andrew Rybchenko
2021-10-04 11:08               ` Ivan Malov
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 02/12] ethdev: add eswitch port " Andrew Rybchenko
2021-10-03 12:40     ` Ori Kam
2021-10-03 18:10       ` Ivan Malov
2021-10-04  5:45         ` Ori Kam
2021-10-04 11:05           ` Ivan Malov
2021-10-04 11:37             ` Ori Kam
2021-10-04 11:58               ` Ivan Malov
2021-10-05  6:20                 ` Ori Kam
2021-10-05  9:19                   ` Andrew Rybchenko
2021-10-05 12:12                     ` Ivan Malov
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 03/12] ethdev: add ethdev action " Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 04/12] ethdev: add eswitch port " Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 05/12] ethdev: deprecate hard-to-use or ambiguous items and actions Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 06/12] ethdev: deprecate direction attributes in transfer flows Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 07/12] net/bnxt: support ethdev and E-Switch port flow items Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 08/12] net/bnxt: support ethdev and E-Switch port flow actions Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 09/12] net/enic: " Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 10/12] net/mlx5: support E-Switch port flow action Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 11/12] net/octeontx2: support ethdev " Andrew Rybchenko
2021-10-04 11:13     ` [dpdk-dev] [EXT] " Kiran Kumar Kokkilagadda
2021-10-04 12:45       ` Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 12/12] net/sfc: support ethdev flow item Andrew Rybchenko
2021-10-10  0:04   ` [dpdk-dev] [PATCH v2 00/12] ethdev: rework transfer flow API Ivan Malov
2021-10-10  0:04     ` [dpdk-dev] [PATCH v2 01/12] ethdev: add port representor item to " Ivan Malov
2021-10-10 11:15       ` Ori Kam
2021-10-10 13:30         ` Ivan Malov
2021-10-10 14:04           ` Ori Kam
2021-10-10 15:02             ` Ivan Malov
2021-10-10  0:04     ` [dpdk-dev] [PATCH v2 02/12] ethdev: add represented port " Ivan Malov
2021-10-10  0:04     ` [dpdk-dev] [PATCH v2 03/12] ethdev: add port representor action " Ivan Malov
2021-10-10  0:04     ` [dpdk-dev] [PATCH v2 04/12] ethdev: add represented port " Ivan Malov
2021-10-10  0:04     ` [dpdk-dev] [PATCH v2 05/12] ethdev: deprecate hard-to-use or ambiguous items and actions Ivan Malov
2021-10-10  0:04     ` [dpdk-dev] [PATCH v2 06/12] ethdev: deprecate direction attributes in transfer flows Ivan Malov
2021-10-10  0:04     ` [dpdk-dev] [PATCH v2 07/12] net/bnxt: support meta flow items to match on traffic source Ivan Malov
2021-10-10  0:04     ` [dpdk-dev] [PATCH v2 08/12] net/bnxt: support meta flow actions to overrule destinations Ivan Malov
2021-10-10  0:05     ` [dpdk-dev] [PATCH v2 09/12] net/enic: " Ivan Malov
2021-10-10  0:05     ` [dpdk-dev] [PATCH v2 10/12] net/mlx5: support represented port flow action Ivan Malov
2021-10-10  0:05     ` [dpdk-dev] [PATCH v2 11/12] net/octeontx2: support port representor " Ivan Malov
2021-10-10  0:05     ` [dpdk-dev] [PATCH v2 12/12] net/sfc: support port representor flow item Ivan Malov
2021-10-10 14:39   ` [dpdk-dev] [PATCH v3 00/12] ethdev: rework transfer flow API Ivan Malov
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 01/12] ethdev: add port representor item to " Ivan Malov
2021-10-11 11:49       ` Ori Kam
2021-10-12 12:39         ` Andrew Rybchenko
2021-10-12 20:55       ` Slava Ovsiienko
2021-10-12 23:14         ` Ivan Malov
2021-10-13 18:26           ` Slava Ovsiienko
2021-10-13 11:52       ` Ferruh Yigit
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 02/12] ethdev: add represented port " Ivan Malov
2021-10-11 11:51       ` Ori Kam
2021-10-12 12:39         ` Andrew Rybchenko
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 03/12] ethdev: add port representor action " Ivan Malov
2021-10-11 18:18       ` Ori Kam
2021-10-12 12:39         ` Andrew Rybchenko
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 04/12] ethdev: add represented port " Ivan Malov
2021-10-11 18:20       ` Ori Kam
2021-10-12 12:40         ` Andrew Rybchenko
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 05/12] ethdev: deprecate hard-to-use or ambiguous items and actions Ivan Malov
2021-10-11 18:23       ` Ori Kam
2021-10-12 12:40         ` Andrew Rybchenko
2021-10-13 11:53       ` Ferruh Yigit
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 06/12] ethdev: deprecate direction attributes in transfer flows Ivan Malov
2021-10-11 18:33       ` Ori Kam
2021-10-12 12:40         ` Andrew Rybchenko
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 07/12] net/bnxt: support meta flow items to match on traffic source Ivan Malov
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 08/12] net/bnxt: support meta flow actions to overrule destinations Ivan Malov
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 09/12] net/enic: " Ivan Malov
2021-10-12 17:03       ` Hyong Youb Kim (hyonkim)
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 10/12] net/mlx5: support represented port flow action Ivan Malov
2021-10-12 21:23       ` Slava Ovsiienko
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 11/12] net/octeontx2: support port representor " Ivan Malov
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 12/12] net/sfc: support port representor flow item Ivan Malov
2021-10-12 14:45     ` [dpdk-dev] [PATCH v3 00/12] ethdev: rework transfer flow API Ferruh Yigit
2021-10-13 11:51     ` Ferruh Yigit
2021-10-13 16:42   ` [dpdk-dev] [PATCH v4 " Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 01/12] ethdev: add port representor item to " Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 02/12] ethdev: add represented port " Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 03/12] ethdev: add port representor action " Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 04/12] ethdev: add represented port " Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 05/12] ethdev: deprecate hard-to-use or ambiguous items and actions Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 06/12] ethdev: deprecate direction attributes in transfer flows Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 07/12] net/bnxt: support meta flow items to match on traffic source Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 08/12] net/bnxt: support meta flow actions to overrule destinations Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 09/12] net/enic: " Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 10/12] net/mlx5: support represented port flow action Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 11/12] net/octeontx2: support port representor " Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 12/12] net/sfc: support port representor flow item Ivan Malov
2021-10-13 16:57   ` [dpdk-dev] [PATCH v4 00/12] ethdev: rework transfer flow API Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 01/12] ethdev: add port representor item to " Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 02/12] ethdev: add represented port " Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 03/12] ethdev: add port representor action " Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 04/12] ethdev: add represented port " Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 05/12] ethdev: deprecate hard-to-use or ambiguous items and actions Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 06/12] ethdev: deprecate direction attributes in transfer flows Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 07/12] net/bnxt: support meta flow items to match on traffic source Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 08/12] net/bnxt: support meta flow actions to overrule destinations Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 09/12] net/enic: " Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 10/12] net/mlx5: support represented port flow action Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 11/12] net/octeontx2: support port representor " Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 12/12] net/sfc: support port representor flow item Ivan Malov
2021-10-13 17:02   ` [dpdk-dev] [PATCH v6 00/12] ethdev: rework transfer flow API Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 01/12] ethdev: add port representor item to " Ivan Malov
2021-10-13 17:15       ` Andrew Rybchenko
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 02/12] ethdev: add represented port " Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 03/12] ethdev: add port representor action " Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 04/12] ethdev: add represented port " Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 05/12] ethdev: deprecate hard-to-use or ambiguous items and actions Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 06/12] ethdev: deprecate direction attributes in transfer flows Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 07/12] net/bnxt: support meta flow items to match on traffic source Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 08/12] net/bnxt: support meta flow actions to overrule destinations Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 09/12] net/enic: " Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 10/12] net/mlx5: support represented port flow action Ivan Malov
2021-10-13 18:02       ` Slava Ovsiienko
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 11/12] net/octeontx2: support port representor " Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 12/12] net/sfc: support port representor flow item Ivan Malov
2021-10-13 17:34   ` [dpdk-dev] [PATCH v7 00/12] ethdev: rework transfer flow API Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 01/12] ethdev: add port representor item to " Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 02/12] ethdev: add represented port " Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 03/12] ethdev: add port representor action " Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 04/12] ethdev: add represented port " Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 05/12] ethdev: deprecate hard-to-use or ambiguous items and actions Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 06/12] ethdev: deprecate direction attributes in transfer flows Ivan Malov
2021-10-13 18:48       ` Slava Ovsiienko
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 07/12] net/bnxt: support meta flow items to match on traffic source Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 08/12] net/bnxt: support meta flow actions to overrule destinations Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 09/12] net/enic: " Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 10/12] net/mlx5: support represented port flow action Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 11/12] net/octeontx2: support port representor " Ivan Malov
2021-10-20  2:33       ` [dpdk-dev] [EXT] " Kiran Kumar Kokkilagadda
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 12/12] net/sfc: support port representor flow item Ivan Malov
2021-10-13 21:08     ` [dpdk-dev] [PATCH v7 00/12] ethdev: rework transfer flow API Ferruh Yigit
2021-10-05  0:36 ` [dpdk-dev] [PATCH] ethdev: let apps find transfer admin port for a given ethdev Ivan Malov
2021-10-05  9:22   ` Ori Kam
2021-10-05 12:41     ` Ivan Malov
2021-10-05 16:04       ` Ori Kam
2021-10-05 17:56   ` Thomas Monjalon
2021-10-05 18:22     ` Ivan Malov
2021-10-05 19:04       ` Thomas Monjalon
2021-10-05 21:10   ` [dpdk-dev] [PATCH v2] ethdev: add API to query proxy port to manage transfer flows Ivan Malov
2021-10-06  7:47     ` Andrew Rybchenko [this message]
2021-10-06 12:33   ` [dpdk-dev] [PATCH v3] " Ivan Malov
2021-10-14  3:21   ` [dpdk-dev] [PATCH v4] " Ivan Malov
2021-10-14 11:45     ` Ferruh Yigit
2021-10-26 14:46     ` David Marchand
2021-10-26 15:47       ` Ivan Malov
2021-10-26 15:58         ` Thomas Monjalon
2021-10-26 16:15           ` Ferruh Yigit

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