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From: Thomas Monjalon <thomas@monjalon.net>
To: Maxime Coquelin <maxime.coquelin@redhat.com>
Cc: dev@dpdk.org, grive@u256.net, 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: Thu, 06 Aug 2020 01:33:46 +0200
Message-ID: <2896958.gFCnIyvRxY@thomas> (raw)
In-Reply-To: <20200625080430.1392037-3-maxime.coquelin@redhat.com>

25/06/2020 10:04, Maxime Coquelin:
> 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>
> ---
> --- 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.
>   */
> -int rte_dev_probe(const char *devargs);
> +struct rte_device *rte_dev_probe(const char *devargs);

Sorry for not catching it earlier, I think this change is against
the idea of having a generic devargs syntax.
One string could identify multiple devices.
And a successful probe does not mean there is a new rte_device
(can be an update, allowing more ports on the same device).



  parent reply	other threads:[~2020-08-05 23:33 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
2020-08-05 23:33   ` Thomas Monjalon [this message]
2020-08-06 10:29     ` Maxime Coquelin
2020-08-06 11:43       ` Thomas Monjalon

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