patches for DPDK stable branches
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From: Thomas Monjalon <thomas@monjalon.net>
To: Rakesh Kudurumalla <rkudurumalla@marvell.com>
Cc: stable@dpdk.org, dev@dpdk.org, david.marchand@redhat.com,
	ferruh.yigit@intel.com, andrew.rybchenko@oktetlabs.ru,
	ajit.khaparde@broadcom.com, jerinj@marvell.com
Subject: Re: [dpdk-stable] [PATCH v2] test: avoid hang if queues are full and Tx fails
Date: Fri, 12 Nov 2021 12:32:00 +0100
Message-ID: <2935187.TuyvbHr83s@thomas> (raw)
In-Reply-To: <20210720165052.606038-1-rkudurumalla@marvell.com>

20/07/2021 18:50, Rakesh Kudurumalla:
> Current pmd_perf_autotest() in continuous mode tries
> to enqueue MAX_TRAFFIC_BURST completely before starting
> the test. Some drivers cannot accept complete
> MAX_TRAFFIC_BURST even though rx+tx desc count can fit it.

Which driver is failing to do so?
Why it cannot enqueue 32 packets?

> This patch changes behaviour to stop enqueuing after few
> retries.

If there is a real limitation, there will be issues in more places
than this test program.
I feel it should be addressed either in the driver or at ethdev level.

[...]
> @@ -480,10 +483,19 @@ main_loop(__rte_unused void *args)
>  			nb_tx = RTE_MIN(MAX_PKT_BURST, num);
>  			nb_tx = rte_eth_tx_burst(portid, 0,
>  						&tx_burst[idx], nb_tx);
> +			if (nb_tx == 0)
> +				retry_cnt++;
>  			num -= nb_tx;
>  			idx += nb_tx;
> +			if (retry_cnt == MAX_RETRY_COUNT) {
> +				retry_cnt = 0;
> +				break;
> +			}




  parent reply	other threads:[~2021-11-12 11:33 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-20 12:47 [dpdk-stable] [PATCH] " Rakesh Kudurumalla
2021-07-20 16:50 ` [dpdk-stable] [PATCH v2] " Rakesh Kudurumalla
2021-10-19 10:19   ` Rakesh Kudurumalla
2021-10-29  7:18     ` Rakesh Kudurumalla
2021-11-12 11:32   ` Thomas Monjalon [this message]
2021-11-22  7:59     ` [EXT] " Rakesh Kudurumalla
2021-11-22  8:58       ` Thomas Monjalon
2021-11-29  8:52         ` Rakesh Kudurumalla
2021-11-29  9:13           ` Thomas Monjalon
2021-12-13  6:40             ` Rakesh Kudurumalla
2022-01-10  9:04               ` Rakesh Kudurumalla

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