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Message-ID: <57b00e5c-5931-4c79-bce0-f3dcf4c4bbb2@amd.com>
Date: Wed, 7 Aug 2024 16:40:35 +0100
User-Agent: Mozilla Thunderbird
Subject: Re: [PATCH 13/17] net/dpaa: add Tx rate limiting DPAA PMD API
To: Hemant Agrawal <hemant.agrawal@nxp.com>, dev@dpdk.org
Cc: Vinod Pullabhatla <vinod.pullabhatla@nxp.com>,
 Rohit Raj <rohit.raj@nxp.com>,
 "Dumitrescu, Cristian" <cristian.dumitrescu@intel.com>,
 Ori Kam <orika@nvidia.com>
References: <20240801105313.630280-1-hemant.agrawal@nxp.com>
 <20240801105313.630280-14-hemant.agrawal@nxp.com>
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On 8/1/2024 11:53 AM, Hemant Agrawal wrote:
> From: Vinod Pullabhatla <vinod.pullabhatla@nxp.com>
> 
> Add support to set Tx rate on DPAA platform through PMD APIs
> 
> Signed-off-by: Vinod Pullabhatla <vinod.pullabhatla@nxp.com>
> Signed-off-by: Rohit Raj <rohit.raj@nxp.com>

<...>

> diff --git a/drivers/net/dpaa/rte_pmd_dpaa.h b/drivers/net/dpaa/rte_pmd_dpaa.h
> index ec45633ba2..b48adff570 100644
> --- a/drivers/net/dpaa/rte_pmd_dpaa.h
> +++ b/drivers/net/dpaa/rte_pmd_dpaa.h
> @@ -1,5 +1,5 @@
>  /* SPDX-License-Identifier: BSD-3-Clause
> - * Copyright 2018 NXP
> + * Copyright 2018,2022 NXP
>   */
>  
>  #ifndef _PMD_DPAA_H_
> @@ -31,4 +31,27 @@
>  int
>  rte_pmd_dpaa_set_tx_loopback(uint16_t port, uint8_t on);
>  
> +/**
> + * Set TX rate limit
> + *
> + * @param port_id
> + *    The port identifier of the Ethernet device.
> + * @param burst
> + *    Max burst size(KBytes) of the Ethernet device.
> + *    0 - Disable TX rate limit.
> + * @param rate
> + *    Max rate(Kb/sec) of the Ethernet device.
> + *    0 - Disable TX rate limit.
> + * @return
> + *    0 - if successful.
> + *    <0 - if failed, with proper error code.
> + *
> + * @warning
> + * @b EXPERIMENTAL: this API may change, or be removed, without prior notice
> + */
> +__rte_experimental
> +int
> +rte_pmd_dpaa_port_set_rate_limit(uint16_t port_id, uint16_t burst,
> +				 uint32_t rate);
> +
>

We are trying to avoid from PMD specific APIs as much as possible.

Can't this be implemented via TM / metering? Or flow API?