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From: Gaëtan Rivet <grive@u256.net>
To: Maxime Coquelin <maxime.coquelin@redhat.com>
Cc: dev@dpdk.org, david.marchand@redhat.com, wenzhuo.lu@intel.com,
	beilei.xing@intel.com, bernard.iremonger@intel.com
Subject: Re: [dpdk-dev] [PATCH v2 (v20.11) 2/2] eal: improve device probing API
Date: Mon, 29 Jun 2020 11:57:11 +0200
Message-ID: <20200629095711.4fn2gqlxst2meo4g@u256.net> (raw)
In-Reply-To: <20200625080430.1392037-3-maxime.coquelin@redhat.com>

On 25/06/20 10:04 +0200, Maxime Coquelin wrote:
> This patch makes rte_dev_probe() to return the
> rte_device pointer on success and NULL on error
> instead of returning 0 on success and negative
> value on error.
> 
> The goal is to avoid that the calling application
> iterates the devices list afterwards to retrieve
> the pointer. Retrieving the pointer is required
> for calling rte_dev_remove() later.
> 
> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> ---
>  app/test-pmd/testpmd.c                 |  2 +-
>  drivers/net/failsafe/failsafe.c        |  5 +++--
>  lib/librte_eal/common/eal_common_dev.c | 18 ++++++++++--------
>  lib/librte_eal/include/rte_dev.h       |  4 ++--
>  4 files changed, 16 insertions(+), 13 deletions(-)
> 

[...]

> diff --git a/lib/librte_eal/include/rte_dev.h b/lib/librte_eal/include/rte_dev.h
> index c8d985fb5c..9cf7c7fd71 100644
> --- a/lib/librte_eal/include/rte_dev.h
> +++ b/lib/librte_eal/include/rte_dev.h
> @@ -148,9 +148,9 @@ int rte_eal_hotplug_add(const char *busname, const char *devname,
>   * @param devargs
>   *   Device arguments including bus, class and driver properties.
>   * @return
> - *   0 on success, negative on error.
> + *   Generic device pointer on success, NULL on error.

Hello Maxime,

Do you plan on a v3 with rte_errno support in the new API or do you
prefer to keep it this way after all?

-- 
Gaëtan

  reply	other threads:[~2020-06-29  9:57 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-25  8:04 [dpdk-dev] [PATCH v2 0/2] rte_dev_probe() API change Maxime Coquelin
2020-06-25  8:04 ` [dpdk-dev] [PATCH v2 1/2] doc: announce " Maxime Coquelin
2020-07-31  7:20   ` Maxime Coquelin
2020-07-31  9:26   ` Bruce Richardson
2020-07-31  9:44     ` Gaëtan Rivet
2020-07-31  9:47       ` Maxime Coquelin
2020-08-04  8:12   ` David Marchand
2020-08-04  8:53     ` Jerin Jacob
2020-06-25  8:04 ` [dpdk-dev] [PATCH v2 (v20.11) 2/2] eal: improve device probing API Maxime Coquelin
2020-06-29  9:57   ` Gaëtan Rivet [this message]
2020-08-05 23:33   ` Thomas Monjalon
2020-08-06 10:29     ` Maxime Coquelin
2020-08-06 11:43       ` Thomas Monjalon

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