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From: "Wang, Haiyue" <haiyue.wang@intel.com>
To: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>,
	"dev@dpdk.org" <dev@dpdk.org>
Cc: "Li, Xiaoyun" <xiaoyun.li@intel.com>,
	"anoobj@marvell.com" <anoobj@marvell.com>,
	"jerinj@marvell.com" <jerinj@marvell.com>,
	"ndabilpuram@marvell.com" <ndabilpuram@marvell.com>,
	"adwivedi@marvell.com" <adwivedi@marvell.com>,
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	"Daley, John" <johndale@cisco.com>,
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	"Zhang, Qi Z" <qi.z.zhang@intel.com>,
	"Wang, Xiao W" <xiao.w.wang@intel.com>,
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	"Xia, Chenbo" <chenbo.xia@intel.com>,
	"thomas@monjalon.net" <thomas@monjalon.net>,
	"Yigit, Ferruh" <ferruh.yigit@intel.com>,
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	"Jayatheerthan, Jay" <jay.jayatheerthan@intel.com>
Subject: Re: [dpdk-dev] [RFC v2 3/5] ethdev: copy ethdev 'burst' API into separate structure
Date: Thu, 23 Sep 2021 05:58:04 +0000	[thread overview]
Message-ID: <BN8PR11MB379534B8BB81FB4C9DB5FA6AF7A39@BN8PR11MB3795.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20210922140953.19388-4-konstantin.ananyev@intel.com>

> -----Original Message-----
> From: Ananyev, Konstantin <konstantin.ananyev@intel.com>
> Sent: Wednesday, September 22, 2021 22:10
> To: dev@dpdk.org
> Cc: Li, Xiaoyun <xiaoyun.li@intel.com>; anoobj@marvell.com; jerinj@marvell.com;
> ndabilpuram@marvell.com; adwivedi@marvell.com; shepard.siegel@atomicrules.com;
> ed.czeck@atomicrules.com; john.miller@atomicrules.com; irusskikh@marvell.com;
> ajit.khaparde@broadcom.com; somnath.kotur@broadcom.com; rahul.lakkireddy@chelsio.com;
> hemant.agrawal@nxp.com; sachin.saxena@oss.nxp.com; Wang, Haiyue <haiyue.wang@intel.com>; Daley, John
> <johndale@cisco.com>; hyonkim@cisco.com; Zhang, Qi Z <qi.z.zhang@intel.com>; Wang, Xiao W
> <xiao.w.wang@intel.com>; humin29@huawei.com; yisen.zhuang@huawei.com; oulijun@huawei.com; Xing, Beilei
> <beilei.xing@intel.com>; Wu, Jingjing <jingjing.wu@intel.com>; Yang, Qiming <qiming.yang@intel.com>;
> matan@nvidia.com; viacheslavo@nvidia.com; sthemmin@microsoft.com; longli@microsoft.com;
> heinrich.kuhn@corigine.com; kirankumark@marvell.com; andrew.rybchenko@oktetlabs.ru;
> mczekaj@marvell.com; jiawenwu@trustnetic.com; jianwang@trustnetic.com; maxime.coquelin@redhat.com; Xia,
> Chenbo <chenbo.xia@intel.com>; thomas@monjalon.net; Yigit, Ferruh <ferruh.yigit@intel.com>;
> mdr@ashroe.eu; Jayatheerthan, Jay <jay.jayatheerthan@intel.com>; Ananyev, Konstantin
> <konstantin.ananyev@intel.com>
> Subject: [RFC v2 3/5] ethdev: copy ethdev 'burst' API into separate structure
> 
> Copy public function pointers (rx_pkt_burst(), etc.) and related
> pointers to internal data from rte_eth_dev structure into a separate flat
> array. We can keep it public to still use inline functions for 'fast' calls
> (like rte_eth_rx_burst(), etc.) to avoid/minimize slowdown.
> The intention is to make rte_eth_dev and related structures internal.
> That should allow future possible changes to core eth_dev strcutures
> to be transaprent to the user and help to avoid ABI/API breakages.
> 
> Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
> ---
>  lib/ethdev/ethdev_private.c  | 53 ++++++++++++++++++++++++++++++++++++
>  lib/ethdev/ethdev_private.h  |  7 +++++
>  lib/ethdev/rte_ethdev.c      | 17 ++++++++++++
>  lib/ethdev/rte_ethdev_core.h | 45 ++++++++++++++++++++++++++++++
>  4 files changed, 122 insertions(+)
> 
> diff --git a/lib/ethdev/ethdev_private.c b/lib/ethdev/ethdev_private.c
> index 012cf73ca2..a1683da77b 100644
> --- a/lib/ethdev/ethdev_private.c
> +++ b/lib/ethdev/ethdev_private.c
> @@ -174,3 +174,56 @@ rte_eth_devargs_parse_representor_ports(char *str, void *data)
>  		RTE_LOG(ERR, EAL, "wrong representor format: %s\n", str);
>  	return str == NULL ? -1 : 0;
>  }
> +
> +static uint16_t
> +dummy_eth_rx_burst(__rte_unused void *rxq,
> +		__rte_unused struct rte_mbuf **rx_pkts,
> +		__rte_unused uint16_t nb_pkts)
> +{
> +	RTE_ETHDEV_LOG(ERR, "rx_pkt_burst for unconfigured port\n");
> +	rte_errno = ENOTSUP;
> +	return 0;
> +}
> +
> +static uint16_t
> +dummy_eth_tx_burst(__rte_unused void *txq,
> +		__rte_unused struct rte_mbuf **tx_pkts,
> +		__rte_unused uint16_t nb_pkts)
> +{
> +	RTE_ETHDEV_LOG(ERR, "tx_pkt_burst for unconfigured port\n");
> +	rte_errno = ENOTSUP;
> +	return 0;
> +}
> +
> +void
> +eth_dev_burst_api_reset(struct rte_eth_burst_api *rba)
> +{
> +	static void *dummy_data[RTE_MAX_QUEUES_PER_PORT];
> +	static const struct rte_eth_burst_api dummy_api = {
> +		.rx_pkt_burst = dummy_eth_rx_burst,
> +		.tx_pkt_burst = dummy_eth_tx_burst,
> +		.rxq = {.data = dummy_data, .clbk = dummy_data,},
> +		.txq = {.data = dummy_data, .clbk = dummy_data,},
> +	};
> +
> +	*rba = dummy_api;
> +}
> +
> +void
> +eth_dev_burst_api_setup(struct rte_eth_burst_api *rba,
> +		const struct rte_eth_dev *dev)
> +{
> +	rba->rx_pkt_burst = dev->rx_pkt_burst;
> +	rba->tx_pkt_burst = dev->tx_pkt_burst;
> +	rba->tx_pkt_prepare = dev->tx_pkt_prepare;
> +	rba->rx_queue_count = dev->rx_queue_count;
> +	rba->rx_descriptor_status = dev->rx_descriptor_status;
> +	rba->tx_descriptor_status = dev->tx_descriptor_status;
> +
> +	rba->rxq.data = dev->data->rx_queues;
> +	rba->rxq.clbk = (void **)(uintptr_t)dev->post_rx_burst_cbs;
> +
> +	rba->txq.data = dev->data->tx_queues;
> +	rba->txq.clbk = (void **)(uintptr_t)dev->pre_tx_burst_cbs;
> +}
> +
> diff --git a/lib/ethdev/ethdev_private.h b/lib/ethdev/ethdev_private.h
> index 9bb0879538..54921f4860 100644
> --- a/lib/ethdev/ethdev_private.h
> +++ b/lib/ethdev/ethdev_private.h
> @@ -30,6 +30,13 @@ eth_find_device(const struct rte_eth_dev *_start, rte_eth_cmp_t cmp,
>  /* Parse devargs value for representor parameter. */
>  int rte_eth_devargs_parse_representor_ports(char *str, void *data);
> 
> +/* reset eth 'burst' API to dummy values */
> +void eth_dev_burst_api_reset(struct rte_eth_burst_api *rba);
> +
> +/* setup eth 'burst' API to ethdev values */
> +void eth_dev_burst_api_setup(struct rte_eth_burst_api *rba,
> +		const struct rte_eth_dev *dev);
> +
>  #ifdef __cplusplus
>  }
>  #endif
> diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
> index 424bc260fa..5904bb7bae 100644
> --- a/lib/ethdev/rte_ethdev.c
> +++ b/lib/ethdev/rte_ethdev.c
> @@ -44,6 +44,9 @@
>  static const char *MZ_RTE_ETH_DEV_DATA = "rte_eth_dev_data";
>  struct rte_eth_dev rte_eth_devices[RTE_MAX_ETHPORTS];
> 
> +/* public 'fast/burst' API */
> +struct rte_eth_burst_api rte_eth_burst_api[RTE_MAX_ETHPORTS];
> +
>  /* spinlock for eth device callbacks */
>  static rte_spinlock_t eth_dev_cb_lock = RTE_SPINLOCK_INITIALIZER;
> 
> @@ -1788,6 +1791,9 @@ rte_eth_dev_start(uint16_t port_id)
>  		(*dev->dev_ops->link_update)(dev, 0);
>  	}
> 
> +	/* expose selection of PMD rx/tx function */
> +	eth_dev_burst_api_setup(rte_eth_burst_api + port_id, dev);
> +
>  	rte_ethdev_trace_start(port_id);
>  	return 0;
>  }
> @@ -1810,6 +1816,9 @@ rte_eth_dev_stop(uint16_t port_id)
>  		return 0;
>  	}
> 
> +	/* point rx/tx functions to dummy ones */
> +	eth_dev_burst_api_reset(rte_eth_burst_api + port_id);
> +
>  	dev->data->dev_started = 0;
>  	ret = (*dev->dev_ops->dev_stop)(dev);
>  	rte_ethdev_trace_stop(port_id, ret);
> @@ -4568,6 +4577,14 @@ rte_eth_mirror_rule_reset(uint16_t port_id, uint8_t rule_id)
>  	return eth_err(port_id, (*dev->dev_ops->mirror_rule_reset)(dev, rule_id));
>  }
> 
> +RTE_INIT(eth_dev_init_burst_api)
> +{
> +	uint32_t i;
> +
> +	for (i = 0; i != RTE_DIM(rte_eth_burst_api); i++)
> +		eth_dev_burst_api_reset(rte_eth_burst_api + i);
> +}
> +
>  RTE_INIT(eth_dev_init_cb_lists)
>  {
>  	uint16_t i;
> diff --git a/lib/ethdev/rte_ethdev_core.h b/lib/ethdev/rte_ethdev_core.h
> index 00f27c643a..da6de5de43 100644
> --- a/lib/ethdev/rte_ethdev_core.h
> +++ b/lib/ethdev/rte_ethdev_core.h
> @@ -53,6 +53,51 @@ typedef int (*eth_rx_descriptor_status_t)(void *rxq, uint16_t offset);
>  typedef int (*eth_tx_descriptor_status_t)(void *txq, uint16_t offset);
>  /**< @internal Check the status of a Tx descriptor */
> 
> +/**
> + * @internal
> + * Structure used to hold opaque pointernals to internal ethdev RX/TXi
> + * queues data.
> + * The main purpose to expose these pointers at all - allow compiler
> + * to fetch this data for 'fast' ethdev inline functions in advance.
> + */
> +struct rte_ethdev_qdata {
> +	void **data;
> +	/**< points to array of internal queue data pointers */
> +	void **clbk;
> +	/**< points to array of queue callback data pointers */
> +};
> +
> +/**
> + * @internal
> + * 'fast' ethdev funcions and related data are hold in a flat array.
> + * one entry per ethdev.
> + */
> +struct rte_eth_burst_api {

'ops' is better ? Like "struct rte_eth_burst_ops". ;-)

> +
> +	/** first 64B line */
> +	eth_rx_burst_t rx_pkt_burst;
> +	/**< PMD receive function. */
> +	eth_tx_burst_t tx_pkt_burst;
> +	/**< PMD transmit function. */
> +	eth_tx_prep_t tx_pkt_prepare;
> +	/**< PMD transmit prepare function. */
> +	eth_rx_queue_count_t rx_queue_count;
> +	/**< Get the number of used RX descriptors. */
> +	eth_rx_descriptor_status_t rx_descriptor_status;
> +	/**< Check the status of a Rx descriptor. */
> +	eth_tx_descriptor_status_t tx_descriptor_status;
> +	/**< Check the status of a Tx descriptor. */
> +	uintptr_t reserved[2];
> +

How about 32 bit system ? Does it need something like :

__rte_cache_aligned for rxq to make sure 64B line?

> +	/** second 64B line */
> +	struct rte_ethdev_qdata rxq;
> +	struct rte_ethdev_qdata txq;
> +	uintptr_t reserved2[4];
> +
> +} __rte_cache_aligned;
> +
> +extern struct rte_eth_burst_api rte_eth_burst_api[RTE_MAX_ETHPORTS];
> +
> 
>  /**
>   * @internal
> --
> 2.26.3


  reply	other threads:[~2021-09-23  5:58 UTC|newest]

Thread overview: 112+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-20 16:28 [dpdk-dev] [RFC 0/7] hide eth dev related structures Konstantin Ananyev
2021-08-20 16:28 ` [dpdk-dev] [RFC 1/7] eth: move ethdev 'burst' API into separate structure Konstantin Ananyev
2021-08-20 16:28 ` [dpdk-dev] [RFC 2/7] eth: make drivers to use new API for Rx Konstantin Ananyev
2021-09-06 18:41   ` Ferruh Yigit
2021-09-14 14:28     ` Ananyev, Konstantin
2021-08-20 16:28 ` [dpdk-dev] [RFC 3/7] eth: make drivers to use new API for Tx Konstantin Ananyev
2021-08-20 16:28 ` [dpdk-dev] [RFC 4/7] eth: make drivers to use new API for Tx prepare Konstantin Ananyev
2021-08-20 16:28 ` [dpdk-dev] [RFC 5/7] eth: make drivers to use new API to obtain descriptor status Konstantin Ananyev
2021-08-20 16:28 ` [dpdk-dev] [RFC 6/7] eth: make drivers to use new API for Rx queue count Konstantin Ananyev
2021-08-20 16:28 ` [dpdk-dev] [RFC 7/7] eth: hide eth dev related structures Konstantin Ananyev
2021-08-26 12:37 ` [dpdk-dev] [RFC 0/7] " Jerin Jacob
2021-09-06 18:09   ` Ferruh Yigit
2021-09-14 13:33   ` Ananyev, Konstantin
2021-09-15  9:45     ` Jerin Jacob
2021-09-22 15:08       ` Ananyev, Konstantin
2021-09-27 16:14         ` Jerin Jacob
2021-09-28  9:37           ` Ananyev, Konstantin
2021-09-22 14:09 ` [dpdk-dev] [RFC v2 0/5] " Konstantin Ananyev
2021-09-22 14:09   ` [dpdk-dev] [RFC v2 1/5] ethdev: allocate max space for internal queue array Konstantin Ananyev
2021-09-22 14:09   ` [dpdk-dev] [RFC v2 2/5] ethdev: change input parameters for rx_queue_count Konstantin Ananyev
2021-09-23  5:51     ` Wang, Haiyue
2021-09-22 14:09   ` [dpdk-dev] [RFC v2 3/5] ethdev: copy ethdev 'burst' API into separate structure Konstantin Ananyev
2021-09-23  5:58     ` Wang, Haiyue [this message]
2021-09-27 18:01       ` Jerin Jacob
2021-09-28  9:42         ` Ananyev, Konstantin
2021-09-22 14:09   ` [dpdk-dev] [RFC v2 4/5] ethdev: make burst functions to use new flat array Konstantin Ananyev
2021-09-22 14:09   ` [dpdk-dev] [RFC v2 5/5] ethdev: hide eth dev related structures Konstantin Ananyev
2021-10-01 14:02   ` [dpdk-dev] [PATCH v3 0/7] " Konstantin Ananyev
2021-10-01 14:02     ` [dpdk-dev] [PATCH v3 1/7] ethdev: allocate max space for internal queue array Konstantin Ananyev
2021-10-01 16:48       ` Ferruh Yigit
2021-10-01 14:02     ` [dpdk-dev] [PATCH v3 2/7] ethdev: change input parameters for rx_queue_count Konstantin Ananyev
2021-10-01 14:02     ` [dpdk-dev] [PATCH v3 3/7] ethdev: copy ethdev 'fast' API into separate structure Konstantin Ananyev
2021-10-01 14:02     ` [dpdk-dev] [PATCH v3 4/7] ethdev: make burst functions to use new flat array Konstantin Ananyev
2021-10-01 16:46       ` Ferruh Yigit
2021-10-01 17:40         ` Ananyev, Konstantin
2021-10-04  8:46           ` Ferruh Yigit
2021-10-04  9:20             ` Ananyev, Konstantin
2021-10-04 10:13               ` Ferruh Yigit
2021-10-04 11:17                 ` Ananyev, Konstantin
2021-10-01 14:02     ` [dpdk-dev] [PATCH v3 5/7] ethdev: add API to retrieve multiple ethernet addresses Konstantin Ananyev
2021-10-01 14:02     ` [dpdk-dev] [PATCH v3 6/7] ethdev: remove legacy Rx descriptor done API Konstantin Ananyev
2021-10-01 14:02     ` [dpdk-dev] [PATCH v3 7/7] ethdev: hide eth dev related structures Konstantin Ananyev
2021-10-01 16:53       ` Ferruh Yigit
2021-10-01 17:04         ` Ferruh Yigit
2021-10-01 17:02     ` [dpdk-dev] [PATCH v3 0/7] " Ferruh Yigit
2021-10-04 13:55     ` [dpdk-dev] [PATCH v4 " Konstantin Ananyev
2021-10-04 13:55       ` [dpdk-dev] [PATCH v4 1/7] ethdev: allocate max space for internal queue array Konstantin Ananyev
2021-10-05 12:09         ` Thomas Monjalon
2021-10-05 16:45           ` Ananyev, Konstantin
2021-10-05 16:49             ` Thomas Monjalon
2021-10-05 12:21         ` Thomas Monjalon
2021-10-04 13:55       ` [dpdk-dev] [PATCH v4 2/7] ethdev: change input parameters for rx_queue_count Konstantin Ananyev
2021-10-04 13:55       ` [dpdk-dev] [PATCH v4 3/7] ethdev: copy ethdev 'fast' API into separate structure Konstantin Ananyev
2021-10-05 13:09         ` Thomas Monjalon
2021-10-05 16:41           ` Ananyev, Konstantin
2021-10-05 16:48             ` Thomas Monjalon
2021-10-05 17:04               ` Ananyev, Konstantin
2021-10-04 13:56       ` [dpdk-dev] [PATCH v4 4/7] ethdev: make burst functions to use new flat array Konstantin Ananyev
2021-10-05  9:54         ` David Marchand
2021-10-05 10:13           ` Ananyev, Konstantin
2021-10-04 13:56       ` [dpdk-dev] [PATCH v4 5/7] ethdev: add API to retrieve multiple ethernet addresses Konstantin Ananyev
2021-10-05 13:13         ` Thomas Monjalon
2021-10-05 16:35           ` Ananyev, Konstantin
2021-10-05 16:45             ` Thomas Monjalon
2021-10-05 17:12               ` Ananyev, Konstantin
2021-10-05 17:41                 ` Thomas Monjalon
2021-10-04 13:56       ` [dpdk-dev] [PATCH v4 6/7] ethdev: remove legacy Rx descriptor done API Konstantin Ananyev
2021-10-05 13:14         ` Thomas Monjalon
2021-10-05 16:21           ` Ananyev, Konstantin
2021-10-04 13:56       ` [dpdk-dev] [PATCH v4 7/7] ethdev: hide eth dev related structures Konstantin Ananyev
2021-10-05 10:04         ` David Marchand
2021-10-05 10:43           ` Ferruh Yigit
2021-10-05 11:37             ` David Marchand
2021-10-05 15:57               ` Ananyev, Konstantin
2021-10-05 13:24         ` Thomas Monjalon
2021-10-05 16:19           ` Ananyev, Konstantin
2021-10-05 16:25             ` Thomas Monjalon
2021-10-06 16:42       ` [dpdk-dev] [PATCH v4 0/7] " Ali Alnubani
2021-10-06 17:26         ` Ali Alnubani
2021-10-07 11:27       ` [dpdk-dev] [PATCH v5 " Konstantin Ananyev
2021-10-07 11:27         ` [dpdk-dev] [PATCH v5 1/7] ethdev: remove legacy Rx descriptor done API Konstantin Ananyev
2021-10-07 11:27         ` [dpdk-dev] [PATCH v5 2/7] ethdev: allocate max space for internal queue array Konstantin Ananyev
2021-10-11  9:20           ` Andrew Rybchenko
2021-10-11 16:25             ` Ananyev, Konstantin
2021-10-11 17:15               ` Andrew Rybchenko
2021-10-11 23:06                 ` Ananyev, Konstantin
2021-10-12  5:47                   ` Andrew Rybchenko
2021-10-07 11:27         ` [dpdk-dev] [PATCH v5 3/7] ethdev: change input parameters for rx_queue_count Konstantin Ananyev
2021-10-11  8:06           ` Andrew Rybchenko
2021-10-12 17:59           ` Hyong Youb Kim (hyonkim)
2021-10-07 11:27         ` [dpdk-dev] [PATCH v5 4/7] ethdev: copy fast-path API into separate structure Konstantin Ananyev
2021-10-09 12:05           ` fengchengwen
2021-10-11  1:18             ` fengchengwen
2021-10-11  8:39               ` Andrew Rybchenko
2021-10-11 15:24               ` Ananyev, Konstantin
2021-10-11  8:35             ` Andrew Rybchenko
2021-10-11 15:15             ` Ananyev, Konstantin
2021-10-11  8:25           ` Andrew Rybchenko
2021-10-11 16:52             ` Ananyev, Konstantin
2021-10-11 17:22               ` Andrew Rybchenko
2021-10-07 11:27         ` [dpdk-dev] [PATCH v5 5/7] ethdev: make fast-path functions to use new flat array Konstantin Ananyev
2021-10-11  9:02           ` Andrew Rybchenko
2021-10-11 15:47             ` Ananyev, Konstantin
2021-10-11 17:03               ` Andrew Rybchenko
2021-10-07 11:27         ` [dpdk-dev] [PATCH v5 6/7] ethdev: add API to retrieve multiple ethernet addresses Konstantin Ananyev
2021-10-11  9:09           ` Andrew Rybchenko
2021-10-07 11:27         ` [dpdk-dev] [PATCH v5 7/7] ethdev: hide eth dev related structures Konstantin Ananyev
2021-10-11  9:20           ` Andrew Rybchenko
2021-10-11 15:54             ` Ananyev, Konstantin
2021-10-11 17:04               ` Andrew Rybchenko
2021-10-08 18:13         ` [dpdk-dev] [PATCH v5 0/7] " Slava Ovsiienko
2021-10-11  9:22         ` Andrew Rybchenko

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