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From: Stephen Hemminger <stephen@networkplumber.org>
To: "Min Hu (Connor)" <humin29@huawei.com>
Cc: Bruce Richardson <bruce.richardson@intel.com>, <dev@dpdk.org>,
	<stable@dpdk.org>, Thomas Monjalon <thomas@monjalon.net>,
	Ferruh Yigit <ferruh.yigit@intel.com>,
	Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>,
	Ciara Power <ciara.power@intel.com>,
	Keith Wiles <keith.wiles@intel.com>
Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH] ethdev: avoid blocking telemetry callback for link status
Date: Mon, 18 Jan 2021 18:26:14 -0800
Message-ID: <20210118182614.63f1d5d2@hermes.local> (raw)
In-Reply-To: <4b5e9630-b331-f498-2488-d9418719ff8c@huawei.com>

On Tue, 19 Jan 2021 09:06:48 +0800
"Min Hu (Connor)" <humin29@huawei.com> wrote:

> Hi, Bruce and all,
> 	Do you know the difference between "rte_eth_link_get" and
> "rte_eth_link_get_nowait"? I know they call funciton "link_update"
> with differenct parameter "wait_to_complete"(set 1 means wait, set 0
>   means not wait). But how to define the "wait" time, and why it shoud wait?
> 	On the further, What are the application scenarios of the two
> APIs?
> 

The default behavior of rte_eth_link_get (in some drivers) is to wait
for link to come up.  Many drivers don't do this. It seems mostly the
Intel ones that do.

  reply	other threads:[~2021-01-19  2:26 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-14 12:17 [dpdk-stable] " Bruce Richardson
2021-01-14 15:06 ` Power, Ciara
2021-01-18 14:02   ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon
2021-01-18 14:48     ` Ferruh Yigit
2021-01-19  1:06 ` Min Hu (Connor)
2021-01-19  2:26   ` Stephen Hemminger [this message]
2021-01-19  2:58     ` Min Hu (Connor)
2021-01-19 10:06       ` Bruce Richardson

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