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From: Thomas Monjalon <thomas@monjalon.net>
To: "Wei Hu (Xavier)" <huwei013@chinasoftinc.com>,
	"ferruh.yigit@intel.com" <ferruh.yigit@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
	"xavier.huwei@huawei.com" <xavier.huwei@huawei.com>,
	Slava Ovsiienko <viacheslavo@nvidia.com>
Subject: Re: [dpdk-dev] [PATCH v4 3/6] app/testpmd: remove restriction on txpkts	set
Date: Tue, 24 Nov 2020 11:27:51 +0100
Message-ID: <3600731.79S79Y1HSu@thomas> (raw)
In-Reply-To: <MWHPR12MB150124EB62A2654D2D22C5CDDFFC0@MWHPR12MB1501.namprd12.prod.outlook.com>

Is it OK to keep this regression?

Ferruh, what do you suggest?


23/11/2020 12:50, Slava Ovsiienko:
> Hi,  Wei
> 
> It was found this patch rejects the --txpkts command line settings.
> set_tx_pkt_segments() is called before device started and
> we have failure chain:
> 
> set_tx_pkt_segments()
>   nb_segs_is_invalid()
>     get_tx_ring_size ()
>      rte_eth_tx_queue_info_get()
> 
> It causes --txpkts testpmd command line option is ignored.
> 
> With best regards, Slava
> 
> > -----Original Message-----
> > From: dev <dev-bounces@dpdk.org> On Behalf Of Wei Hu (Xavier)
> > Sent: Friday, September 25, 2020 15:47
> > To: dev@dpdk.org
> > Cc: xavier.huwei@huawei.com
> > Subject: [dpdk-dev] [PATCH v4 3/6] app/testpmd: remove restriction on txpkts
> > set
> > 
> > From: Chengchang Tang <tangchengchang@huawei.com>
> > 
> > Currently, if nb_txd is not set, the txpkts is not allowed to be set because the
> > nb_txd is used to avoid the numer of segments exceed the Tx ring size and the
> > default value of nb_txd is 0. And there is a bug that nb_txd is the global
> > configuration for Tx ring size and the ring size could be changed by some
> > command per queue. So these valid check is unreliable and introduced
> > unnecessary constraints.
> > 
> > This patch adds a valid check function to use the real Tx ring size to check the
> > validity of txpkts.
> > 
> > Fixes: af75078fece3 ("first public release")
> > Cc: stable@dpdk.org
> > 
> > Signed-off-by: Chengchang Tang <tangchengchang@huawei.com>
> > Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
> > ---
> > v3 -> v4:
> > 	 add check 'rte_eth_rx_queue_info_get()' return value and
> > 	 if it is '-ENOSTUP' calculate the 'ring_size'.
> > v3:      initial version.
> > ---
> >  app/test-pmd/config.c | 64
> > +++++++++++++++++++++++++++++++++++++++++++++++----
> >  1 file changed, 60 insertions(+), 4 deletions(-)
> > 
> > diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c index
> > 6496d2f..8ebb927 100644
> > --- a/app/test-pmd/config.c
> > +++ b/app/test-pmd/config.c
> > @@ -1893,6 +1893,38 @@ tx_queue_id_is_invalid(queueid_t txq_id)  }
> > 
> >  static int
> > +get_tx_ring_size(portid_t port_id, queueid_t txq_id, uint16_t
> > +*ring_size) {
> > +	struct rte_port *port = &ports[port_id];
> > +	struct rte_eth_txq_info tx_qinfo;
> > +	int ret;
> > +
> > +	ret = rte_eth_tx_queue_info_get(port_id, txq_id, &tx_qinfo);
> > +	if (ret == 0) {
> > +		*ring_size = tx_qinfo.nb_desc;
> > +		return ret;
> > +	}
> > +
> > +	if (ret != -ENOTSUP)
> > +		return ret;
> > +	/*
> > +	 * If the rte_eth_tx_queue_info_get is not support for this PMD,
> > +	 * ring_size stored in testpmd will be used for validity verification.
> > +	 * When configure the txq by rte_eth_tx_queue_setup with
> > nb_tx_desc
> > +	 * being 0, it will use a default value provided by PMDs to setup this
> > +	 * txq. If the default value is 0, it will use the
> > +	 * RTE_ETH_DEV_FALLBACK_TX_RINGSIZE to setup this txq.
> > +	 */
> > +	if (port->nb_tx_desc[txq_id])
> > +		*ring_size = port->nb_tx_desc[txq_id];
> > +	else if (port->dev_info.default_txportconf.ring_size)
> > +		*ring_size = port->dev_info.default_txportconf.ring_size;
> > +	else
> > +		*ring_size = RTE_ETH_DEV_FALLBACK_TX_RINGSIZE;
> > +	return 0;
> > +}
> > +
> > +static int
> >  rx_desc_id_is_invalid(uint16_t rxdesc_id)  {
> >  	if (rxdesc_id < nb_rxd)
> > @@ -2986,17 +3018,41 @@ show_tx_pkt_segments(void)
> >  	printf("Split packet: %s\n", split);
> >  }
> > 
> > +static bool
> > +nb_segs_is_invalid(unsigned int nb_segs) {
> > +	uint16_t ring_size;
> > +	uint16_t queue_id;
> > +	uint16_t port_id;
> > +	int ret;
> > +
> > +	RTE_ETH_FOREACH_DEV(port_id) {
> > +		for (queue_id = 0; queue_id < nb_txq; queue_id++) {
> > +			ret = get_tx_ring_size(port_id, queue_id, &ring_size);
> > +
> > +			if (ret)
> > +				return true;
> > +
> > +			if (ring_size < nb_segs) {
> > +				printf("nb segments per TX packets=%u >= "
> > +				       "TX queue(%u) ring_size=%u - ignored\n",
> > +				       nb_segs, queue_id, ring_size);
> > +				return true;
> > +			}
> > +		}
> > +	}
> > +
> > +	return false;
> > +}
> > +
> >  void
> >  set_tx_pkt_segments(unsigned *seg_lengths, unsigned nb_segs)  {
> >  	uint16_t tx_pkt_len;
> >  	unsigned i;
> > 
> > -	if (nb_segs >= (unsigned) nb_txd) {
> > -		printf("nb segments per TX packets=%u >= nb_txd=%u -
> > ignored\n",
> > -		       nb_segs, (unsigned int) nb_txd);
> > +	if (nb_segs_is_invalid(nb_segs))
> >  		return;
> > -	}
> > 
> >  	/*
> >  	 * Check that each segment length is greater or equal than
> > --
> > 2.9.5
> 
> 






  reply	other threads:[~2020-11-24 10:27 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-18 12:02 [dpdk-dev] [PATCH 0/4] minor fixes for testpmd Wei Hu (Xavier)
2020-08-18 12:02 ` [dpdk-dev] [PATCH 1/4] app/testpmd: fix missing verification of port id Wei Hu (Xavier)
2020-08-18 12:02 ` [dpdk-dev] [PATCH 2/4] app/testpmd: fix VLAN offload configuration when config fail Wei Hu (Xavier)
2020-08-18 12:02 ` [dpdk-dev] [PATCH 3/4] app/testpmd: fix packet header in txonly mode Wei Hu (Xavier)
2020-08-18 12:02 ` [dpdk-dev] [PATCH 4/4] app/testpmd: fix displaying Rx Tx queues information Wei Hu (Xavier)
2020-08-20  1:42 ` [dpdk-dev] [PATCH v2 0/4] minor fixes for testpmd Wei Hu (Xavier)
2020-08-20  1:42   ` [dpdk-dev] [PATCH v2 1/4] app/testpmd: fix missing verification of port id Wei Hu (Xavier)
2020-09-14 16:13     ` Ferruh Yigit
2020-08-20  1:42   ` [dpdk-dev] [PATCH v2 2/4] app/testpmd: fix VLAN offload configuration when config fail Wei Hu (Xavier)
2020-09-14 16:13     ` Ferruh Yigit
2020-08-20  1:42   ` [dpdk-dev] [PATCH v2 3/4] app/testpmd: fix packet header in txonly mode Wei Hu (Xavier)
2020-09-14 16:23     ` Ferruh Yigit
2020-09-17  7:10       ` Chengchang Tang
2020-09-17 11:16         ` Ferruh Yigit
2020-09-17 11:48           ` Chengchang Tang
2020-08-20  1:42   ` [dpdk-dev] [PATCH v2 4/4] app/testpmd: fix displaying Rx Tx queues information Wei Hu (Xavier)
2020-09-14 16:31     ` Ferruh Yigit
2020-09-16  9:23       ` Wei Hu (Xavier)
2020-09-16 15:58         ` Ferruh Yigit
2020-09-03  3:19   ` [dpdk-dev] [PATCH v2 0/4] minor fixes for testpmd Wei Hu (Xavier)
2020-09-19 10:47 ` [dpdk-dev] [PATCH v3 0/6] " Wei Hu (Xavier)
2020-09-19 10:47   ` [dpdk-dev] [PATCH v3 1/6] app/testpmd: fix missing verification of port id Wei Hu (Xavier)
2020-09-22 14:49     ` Ferruh Yigit
2020-09-19 10:47   ` [dpdk-dev] [PATCH v3 2/6] app/testpmd: fix VLAN offload configuration when config fail Wei Hu (Xavier)
2020-09-19 10:47   ` [dpdk-dev] [PATCH v3 3/6] app/testpmd: remove restriction on txpkts set Wei Hu (Xavier)
2020-09-22 14:51     ` Ferruh Yigit
2020-09-23  3:14       ` Wei Hu (Xavier)
2020-09-23 11:57         ` Wei Hu (Xavier)
2020-09-23 16:59           ` Ferruh Yigit
2020-09-24  6:08             ` Chengchang Tang
2020-09-24 12:19               ` Ferruh Yigit
2020-09-19 10:47   ` [dpdk-dev] [PATCH v3 4/6] app/testpmd: fix packet header in txonly mode Wei Hu (Xavier)
2020-09-19 10:47   ` [dpdk-dev] [PATCH v3 5/6] app/testpmd: fix valid desc id check Wei Hu (Xavier)
2020-09-22 14:53     ` Ferruh Yigit
2020-09-19 10:47   ` [dpdk-dev] [PATCH v3 6/6] app/testpmd: fix displaying Rx Tx queues information Wei Hu (Xavier)
2020-09-25 12:47 ` [dpdk-dev] [PATCH v4 0/6] minor fixes for testpmd Wei Hu (Xavier)
2020-09-25 12:47   ` [dpdk-dev] [PATCH v4 1/6] app/testpmd: fix missing verification of port id Wei Hu (Xavier)
2020-09-25 12:47   ` [dpdk-dev] [PATCH v4 2/6] app/testpmd: fix VLAN offload configuration when config fail Wei Hu (Xavier)
2020-09-25 12:47   ` [dpdk-dev] [PATCH v4 3/6] app/testpmd: remove restriction on txpkts set Wei Hu (Xavier)
2020-11-23 11:50     ` Slava Ovsiienko
2020-11-24 10:27       ` Thomas Monjalon [this message]
2020-11-24 12:23         ` Ferruh Yigit
2020-11-24 13:01           ` Kevin Traynor
2020-11-25 14:06           ` Ferruh Yigit
2020-11-26  7:24             ` Slava Ovsiienko
2020-11-26 12:38               ` Ferruh Yigit
2020-11-27 13:05                 ` Slava Ovsiienko
2020-12-02 12:07                   ` Ferruh Yigit
2020-12-03  9:45                     ` Slava Ovsiienko
2020-12-03 10:18                       ` Ferruh Yigit
2020-12-11 15:07                         ` [dpdk-dev] [PATCH] app/testpmd: fix segment number check Viacheslav Ovsiienko
2020-12-11 16:00                           ` Andrew Boyer
2020-12-11 16:14                             ` Slava Ovsiienko
2020-12-16 12:12                               ` Ferruh Yigit
2020-12-16 12:33                                 ` Slava Ovsiienko
2020-12-16 12:36                           ` Ferruh Yigit
2021-04-23 16:09                           ` [dpdk-dev] [PATCH v2] " Ferruh Yigit
2021-04-26 11:23                             ` Li, Xiaoyun
2021-04-27 11:42                               ` Ferruh Yigit
2020-09-25 12:47   ` [dpdk-dev] [PATCH v4 4/6] app/testpmd: fix packet header in txonly mode Wei Hu (Xavier)
2020-09-29 15:40     ` Ferruh Yigit
2020-09-25 12:47   ` [dpdk-dev] [PATCH v4 5/6] app/testpmd: fix valid desc id check Wei Hu (Xavier)
2020-09-25 12:47   ` [dpdk-dev] [PATCH v4 6/6] app/testpmd: fix displaying Rx Tx queues information Wei Hu (Xavier)
2020-09-29 15:40   ` [dpdk-dev] [PATCH v4 0/6] minor fixes for testpmd Ferruh Yigit

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