From: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>
To: Thomas Monjalon <thomas@monjalon.net>,
"Yigit, Ferruh" <ferruh.yigit@intel.com>
Cc: "Min Hu (Connor)" <humin29@huawei.com>,
"techboard@dpdk.org" <techboard@dpdk.org>,
"stephen@networkplumber.org" <stephen@networkplumber.org>,
"Richardson, Bruce" <bruce.richardson@intel.com>,
"jerinj@marvell.com" <jerinj@marvell.com>,
"Ray Kinsella" <mdr@ashroe.eu>, "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [dpdk-techboard] [PATCH V5 1/2] dpdk: resolve compiling errors for per-queue stats
Date: Mon, 28 Sep 2020 12:00:01 +0000 [thread overview]
Message-ID: <BYAPR11MB3301B94702129232C5DEBE299A350@BYAPR11MB3301.namprd11.prod.outlook.com> (raw)
In-Reply-To: <32785804.XpyAPG8jY8@thomas>
> 28/09/2020 10:59, Ferruh Yigit:
> > On 9/27/2020 4:16 AM, Min Hu (Connor) wrote:
> > > From: Huisong Li <lihuisong@huawei.com>
> > >
> > > Currently, only statistics of rx/tx queues with queue_id less than
> > > RTE_ETHDEV_QUEUE_STAT_CNTRS can be displayed. If there is a certain
> > > application scenario that it needs to use 256 or more than 256 queues
> > > and display all statistics of rx/tx queue. At this moment, we have to
> > > change the macro to be equaled to the queue number.
> > >
> > > However, modifying the macro to be greater than 256 will trigger
> > > many errors and warnings from test-pmd, PMD drivers and librte_ethdev
> > > during compiling dpdk project. But it is possible and permitted that
> > > rx/tx queue number is greater than 256 and all statistics of rx/tx
> > > queue need to be displayed. In addition, the data type of rx/tx queue
> > > number in rte_eth_dev_configure API is 'uint16_t'. So It is unreasonable
> > > to use the 'uint8_t' type for variables that control which per-queue
> > > statistics can be displayed.
>
> The explanation is too much complex and misleading.
> You mean you cannot increase RTE_ETHDEV_QUEUE_STAT_CNTRS
> above 256 because it is an 8-bit type?
>
> [...]
> > > --- a/lib/librte_ethdev/rte_ethdev.h
> > > +++ b/lib/librte_ethdev/rte_ethdev.h
> > > int rte_eth_dev_set_tx_queue_stats_mapping(uint16_t port_id,
> > > - uint16_t tx_queue_id, uint8_t stat_idx);
> > > + uint16_t tx_queue_id, uint16_t stat_idx);
> [...]
> > > int rte_eth_dev_set_rx_queue_stats_mapping(uint16_t port_id,
> > > uint16_t rx_queue_id,
> > > - uint8_t stat_idx);
> > > + uint16_t stat_idx);
> [...]
> > cc'ed tech-board,
> >
> > The patch breaks the ethdev ABI without a deprecation notice from previous
> > release(s).
> >
> > It is mainly a fix to the port_id storage type, which we have updated from
> > uint8_t to uint16_t in past but some seems remained for
> > 'rte_eth_dev_set_tx_queue_stats_mapping()' &
> > 'rte_eth_dev_set_rx_queue_stats_mapping()' APIs.
>
> No, it is not related to the port id, but the number of limited stats.it
> it is not limited. In this case, we probably don't need the API
> *_queue_stats_mapping which was invented for a limitation of ixgbe.
It is probably a bit unusual specially for modern NICs,
but I think it still possible in principle.
Let say NIC has up to 16K queues, but can map stats only for 1K, or so.
So formally - yes, I think both queue_idx and stats_idx have to be same type.
Also I can't foresee problems such change could introduce (except formal API/ABI break).
So:
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
>
> The problem is probably somewhere else (in testpmd),
> that's why I am against this patch.
>
next prev parent reply other threads:[~2020-09-28 12:00 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-31 3:41 [dpdk-dev] [RFC 1/2] Description: lib/ethdev: change data type in tc_rxq and tc_txq Min Hu(Connor)
2020-08-31 3:41 ` [dpdk-dev] [RFC 2/2] Description: dpdk: fix compiling errors for more than 256 per-queue statistics Min Hu(Connor)
2020-09-01 1:33 ` [dpdk-dev] [RFC 1/2] ethdev: change data type in TC rxq and TC txq Min Hu (Connor)
2020-09-01 1:33 ` [dpdk-dev] [RFC 2/2] ethdev: fix compiling errors for per-queue statistics Min Hu (Connor)
2020-09-01 2:23 ` Stephen Hemminger
2020-09-01 11:52 ` [dpdk-dev] [PATCH 0/4] ethdev: change the queue ID type Min Hu (Connor)
2020-09-01 11:52 ` [dpdk-dev] [PATCH 1/4] ethdev: change data type in TC rxq and TC txq Min Hu (Connor)
2020-09-04 11:32 ` [dpdk-dev] [PATCH V2 0/4] ethdev: change the queue ID type Min Hu (Connor)
2020-09-04 11:32 ` [dpdk-dev] [PATCH V2 1/4] ethdev: fix compiling errors for per-queue statistics Min Hu (Connor)
2020-09-04 18:04 ` Ferruh Yigit
2020-09-04 18:31 ` Ferruh Yigit
2020-09-05 16:51 ` Thomas Monjalon
2020-09-23 2:31 ` Min Hu (Connor)
2020-09-23 9:18 ` Ferruh Yigit
2020-09-25 8:58 ` Min Hu (Connor)
2020-09-25 9:36 ` Ferruh Yigit
2020-09-23 12:59 ` [dpdk-dev] [PATCH V3 0/4] change data type in TC queue Min Hu (Connor)
2020-09-23 12:59 ` [dpdk-dev] [PATCH V3 1/4] dpdk: fix compiling errors for per-queue statistics Min Hu (Connor)
2020-09-23 13:00 ` [dpdk-dev] [PATCH V3 2/4] ethdev: change data type in TC rxq and TC txq Min Hu (Connor)
2020-09-23 13:00 ` [dpdk-dev] [PATCH V3 3/4] doc: announce modified field in DCB TC queue mapping Min Hu (Connor)
2020-09-23 13:00 ` [dpdk-dev] [PATCH V3 4/4] doc: announce modified in queue stats mapping API Min Hu (Connor)
2020-09-25 9:41 ` [dpdk-dev] [PATCH V3 0/4] change data type in TC queue Ferruh Yigit
2020-09-04 11:32 ` [dpdk-dev] [PATCH V2 2/4] ethdev: change data type in TC rxq and TC txq Min Hu (Connor)
2020-09-04 11:32 ` [dpdk-dev] [PATCH V2 3/4] doc: announce modified field in DCB TC queue mapping Min Hu (Connor)
2020-09-04 11:32 ` [dpdk-dev] [PATCH V2 4/4] doc: announce modified field in ethdev API Min Hu (Connor)
2020-09-04 14:33 ` [dpdk-dev] [PATCH V2 0/4] ethdev: change the queue ID type Ferruh Yigit
2020-09-09 12:36 ` [dpdk-dev] [PATCH V3 0/3] add FEC support Min Hu (Connor)
2020-09-09 12:36 ` [dpdk-dev] [PATCH V3 1/3] ethdev: introduce FEC API Min Hu (Connor)
2020-09-09 12:36 ` [dpdk-dev] [PATCH V3 2/3] net/hns3: support FEC Min Hu (Connor)
2020-09-09 12:36 ` [dpdk-dev] [PATCH V3 3/3] app/testpmd: add FEC command Min Hu (Connor)
2020-09-01 11:52 ` [dpdk-dev] [PATCH 2/4] ethdev: fix compiling errors for per-queue statistics Min Hu (Connor)
2020-09-01 16:17 ` Ferruh Yigit
2020-09-01 11:52 ` [dpdk-dev] [PATCH 3/4] doc: announce modified field in DCB TC queue mapping Min Hu (Connor)
2020-09-01 11:52 ` [dpdk-dev] [PATCH 4/4] doc: announce modified field in ethdev API Min Hu (Connor)
2020-09-01 16:14 ` [dpdk-dev] [PATCH 0/4] ethdev: change the queue ID type Ferruh Yigit
2020-09-25 12:51 ` [dpdk-dev] [PATCH V4 0/2] change data type in TC queue Min Hu (Connor)
2020-09-25 12:51 ` [dpdk-dev] [PATCH V4 1/2] dpdk: resolve compiling errors for per-queue stats Min Hu (Connor)
2020-09-25 12:51 ` [dpdk-dev] [PATCH V4 2/2] ethdev: change data type in TC rxq and TC txq Min Hu (Connor)
2020-09-25 13:14 ` [dpdk-dev] [PATCH V4 0/2] change data type in TC queue Ferruh Yigit
2020-09-27 3:16 ` [dpdk-dev] [PATCH V5 " Min Hu (Connor)
2020-09-27 3:16 ` [dpdk-dev] [PATCH V5 1/2] dpdk: resolve compiling errors for per-queue stats Min Hu (Connor)
2020-09-28 8:59 ` Ferruh Yigit
2020-09-28 9:16 ` [dpdk-dev] [dpdk-techboard] " Thomas Monjalon
2020-09-28 12:00 ` Ananyev, Konstantin [this message]
2020-09-28 13:47 ` Min Hu (Connor)
2020-09-28 15:35 ` Thomas Monjalon
2020-09-28 13:53 ` Ferruh Yigit
2020-09-28 15:24 ` Thomas Monjalon
2020-09-28 15:43 ` Stephen Hemminger
2020-10-05 12:23 ` Ferruh Yigit
2020-10-06 8:33 ` Olivier Matz
2020-10-09 20:32 ` Ferruh Yigit
2020-10-10 8:09 ` Thomas Monjalon
2020-10-12 17:02 ` Ferruh Yigit
2020-09-29 4:49 ` Min Hu (Connor)
2020-09-29 9:33 ` Thomas Monjalon
2020-09-29 13:46 ` Min Hu (Connor)
2020-09-28 11:52 ` Ananyev, Konstantin
2020-09-30 8:34 ` [dpdk-dev] " Kinsella, Ray
2020-09-27 3:16 ` [dpdk-dev] [PATCH V5 2/2] ethdev: change data type in TC rxq and TC txq Min Hu (Connor)
2020-09-28 9:04 ` Ferruh Yigit
2020-09-28 9:21 ` [dpdk-dev] [dpdk-techboard] " Thomas Monjalon
2020-10-05 12:26 ` Ferruh Yigit
2020-10-06 12:04 ` Ferruh Yigit
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