From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Hemminger <stephen@networkplumber.org>
Subject: Re: [PATCH 2/5] cxgbe: add cxgbe poll mode driver.
Date: Fri, 22 May 2015 09:46:38 -0700
Message-ID: <20150522094638.24d4c498@urahara>
References: <cover.1432300701.git.rahul.lakkireddy@chelsio.com>
 <25f06823ef87d05bf57d996df387478e7fbc966f.1432300701.git.rahul.lakkireddy@chelsio.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Cc: dev@dpdk.org, Felix Marti <felix@chelsio.com>,
 Kumar Sanghvi <kumaras@chelsio.com>,
 Nirranjan Kirubaharan <nirranjan@chelsio.com>
To: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Return-path: <dev-bounces@dpdk.org>
Received: from mail-pa0-f52.google.com (mail-pa0-f52.google.com
 [209.85.220.52]) by dpdk.org (Postfix) with ESMTP id DCBC65A4B
 for <dev@dpdk.org>; Fri, 22 May 2015 18:46:35 +0200 (CEST)
Received: by pabru16 with SMTP id ru16so23925999pab.1
 for <dev@dpdk.org>; Fri, 22 May 2015 09:46:35 -0700 (PDT)
In-Reply-To: <25f06823ef87d05bf57d996df387478e7fbc966f.1432300701.git.rahul.lakkireddy@chelsio.com>
List-Id: patches and discussions about DPDK <dev.dpdk.org>
List-Unsubscribe: <http://dpdk.org/ml/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <http://dpdk.org/ml/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
Errors-To: dev-bounces@dpdk.org
Sender: "dev" <dev-bounces@dpdk.org>

On Fri, 22 May 2015 18:54:20 +0530
Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> wrote:

> +static int cxgbe_dev_link_update(struct rte_eth_dev *eth_dev,
> +				 __rte_unused int wait_to_complete)
> +{
> +	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
> +	struct adapter *adapter = pi->adapter;
> +	struct sge *s = &adapter->sge;
> +	unsigned int work_done, budget = 4;
> +	int ret;
> +
> +	cxgbe_poll(&s->fw_evtq, NULL, budget, &work_done);
> +	ret = pi->link_cfg.link_ok;
> +	eth_dev->data->dev_link.link_status = pi->link_cfg.link_ok;
> +	eth_dev->data->dev_link.link_duplex = ETH_LINK_FULL_DUPLEX;
> +	eth_dev->data->dev_link.link_speed = pi->link_cfg.speed;
> +	return ret;

It is well not documented but link update is supposed to return 0
on link status changed and -1 if not changed.