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From: Thomas Monjalon <thomas@monjalon.net>
To: Wisam Jaddo <wisamm@mellanox.com>
Cc: jackmin@mellanox.com, david.marchand@redhat.com, dev@dpdk.org,
	arybchenko@solarflare.com
Subject: Re: [dpdk-dev] [PATCH v2] app/flow-perf: fix condition of hairpin queues setup
Date: Mon, 06 Jul 2020 10:15:42 +0200
Message-ID: <13068074.RF7ULXdDSz@thomas> (raw)
In-Reply-To: <20200706075318.8048-1-wisamm@mellanox.com>

06/07/2020 09:53, Wisam Jaddo:
> The hairpin queue is the one that start from normal rxq,
> and will be less than nr_queues where nr_queues is the
> sum of normal and hairpin
> 
> Fixes: bf3688f1e816 ("app/flow-perf: add insertion rate calculation")
> Cc: wisamm@mellanox.com
> 
> Signed-off-by: Wisam Jaddo <wisamm@mellanox.com>
> Reviewed-by: Asaf Penso <asafp@mellanox.com>
> 
> ---
> v2:
> * Add documentation of hairpin peering and allocating logic.
> * Add documentation for some variables.
> ---
> --- a/app/test-flow-perf/main.c
> +++ b/app/test-flow-perf/main.c
> @@ -1012,8 +1012,26 @@ init_port(void)
>  				rte_strerror(-ret), port_id);
>  
>  		if (hairpinq != 0) {
> +			/* Each hairpin queue setup need a hairpin configuration
> +			 * object, which determine the TX path for hairpin.
> +			 *
> +			 * The peering here represent the TX side, which mean the
> +			 * peer.port represent TX port, and peer.queue represent
> +			 * tx_queue.
> +			 *
> +			 * So if RXQ=4 and TXQ=4, and first hairpin_q is 4 after
> +			 * [0, 1, 2, 3], then tx_queue is TXQ+i which is 4 as well.
> +			 *
> +			 * hairpinq: represent the number of hairpin queues needed
> +			 * to be initialized.
> +			 *
> +			 * In 0 case means no hairpin queues needed which is the
> +			 * default.
> +			 *
> +			 * hairpin_q: represent hairpin queue id to be initialized.
> +			 */

Variables doc should be on variable declaration.




  reply	other threads:[~2020-07-06  8:15 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-30  8:10 [dpdk-dev] [PATCH] " Wisam Jaddo
2020-07-05 15:39 ` Asaf Penso
2020-07-05 20:39 ` Thomas Monjalon
2020-07-06  8:00   ` Wisam Monther
2020-07-06  7:53 ` [dpdk-dev] [PATCH v2] " Wisam Jaddo
2020-07-06  8:15   ` Thomas Monjalon [this message]
2020-07-06  8:32   ` [dpdk-dev] [PATCH v3] " Wisam Jaddo
2020-07-16 14:16     ` [dpdk-dev] [PATCH v4] " Wisam Jaddo
2020-07-19 13:11       ` Thomas Monjalon

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