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From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Thomas Monjalon <thomas@monjalon.net>,
	Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Cc: dev@dpdk.org, arybchenko@solarflare.com,
	Liron Himi <lironh@marvell.com>,
	 Stephen Hemminger <stephen@networkplumber.org>,
	Ray Kinsella <mdr@ashroe.eu>, Neil Horman <nhorman@tuxdriver.com>,
	Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>,
	Gaetan Rivet <grive@u256.net>,
	Jakub Grajciar <jgrajcia@cisco.com>,
	Matan Azrad <matan@nvidia.com>,
	Shahaf Shuler <shahafs@nvidia.com>,
	Viacheslav Ovsiienko <viacheslavo@nvidia.com>,
	Zyta Szpak <zr@semihalf.com>,
	Stephen Hemminger <sthemmin@microsoft.com>,
	"K. Y. Srinivasan" <kys@microsoft.com>,
	Haiyang Zhang <haiyangz@microsoft.com>,
	Long Li <longli@microsoft.com>,
	Maxime Coquelin <maxime.coquelin@redhat.com>,
	Chenbo Xia <chenbo.xia@intel.com>,
	Zhihong Wang <zhihong.wang@intel.com>
Subject: Re: [dpdk-dev] [PATCH v4 3/3] ethdev: allow close function to return an error
Date: Tue, 13 Oct 2020 10:33:23 +0100
Message-ID: <ee84e53c-240d-66d6-969e-76093874dba2@intel.com> (raw)
In-Reply-To: <13936658.LjDx0tDdet@thomas>

On 10/13/2020 9:55 AM, Thomas Monjalon wrote:

<...>

>>>>>    	dev = &rte_eth_devices[port_id];
>>>>>    
>>>>> -	RTE_FUNC_PTR_OR_RET(*dev->dev_ops->dev_close);
>>>>> -	(*dev->dev_ops->dev_close)(dev);
>>>>> +	RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_close, -ENOTSUP);
>>>>> +	*lasterr = (*dev->dev_ops->dev_close)(dev);
>>>>> +	if (*lasterr != 0)
>>>>> +		lasterr = &binerr;
>>>>>    
>>>>>    	rte_ethdev_trace_close(port_id);
>>>>> -	rte_eth_dev_release_port(dev);
>>>>> +	*lasterr = rte_eth_dev_release_port(dev);
>>>>> +
>>>>> +	return firsterr;
>>>>>    }
>>>>
>>>> This may be personal taste but above error handling looks like unnecessary
>>>> complex, what do you think something like below:
>>>>
>>>> close_err = (*dev->dev_ops->dev_close)(dev);
>>>> release_err = rte_eth_dev_release_port(dev);
>>>> return close_err ? close_err : release_err;
>>>
>>> This is what I did first. Then thought about this "elegant" handling.
>>> The pointer solution is just one more line and is more future proof.
>>>
>>> I'm fine with any choice. Andrew?
>>>
>>
>> Hm, really hard to make a choice. I tend to choose Thomas's
>> version. Yes, I agree that it is a bit over-complicated in
>> this particular case, but thoughts to be future-proof
>> overweight for me. Plus it adds a pattern on how to handle
>> such cases in the future.
> 
> Yes it's an elegant pattern :)
> 

OK :)


  reply	other threads:[~2020-10-13  9:33 UTC|newest]

Thread overview: 201+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-13 22:06 [dpdk-dev] [PATCH 00/20] cleanup ethdev close operation Thomas Monjalon
2020-09-13 22:06 ` [dpdk-dev] [PATCH 01/20] ethdev: reset device and interrupt pointers on release Thomas Monjalon
2020-09-23 16:41   ` Ferruh Yigit
2020-09-13 22:06 ` [dpdk-dev] [PATCH 02/20] ethdev: allow drivers to return error on close Thomas Monjalon
2020-09-23 16:41   ` Ferruh Yigit
2020-09-23 20:53     ` Thomas Monjalon
2020-09-23 21:02       ` Stephen Hemminger
2020-09-23 21:06         ` Thomas Monjalon
2020-09-23 21:47           ` Stephen Hemminger
2020-09-23 21:52             ` Thomas Monjalon
2020-09-23 22:02               ` Stephen Hemminger
2020-09-23 22:35                 ` Thomas Monjalon
2020-09-24  9:12                   ` Bruce Richardson
2020-09-24 10:07                     ` Thomas Monjalon
2020-09-24 12:09                       ` Ferruh Yigit
2020-09-24 14:48                     ` Stephen Hemminger
2020-09-13 22:06 ` [dpdk-dev] [PATCH 03/20] net/af_packet: release port upon close Thomas Monjalon
2020-09-23 16:41   ` Ferruh Yigit
2020-09-13 22:06 ` [dpdk-dev] [PATCH 04/20] net/atlantic: " Thomas Monjalon
2020-09-16 15:14   ` Igor Russkikh
2020-09-23 16:42   ` Ferruh Yigit
2020-09-23 20:50     ` Thomas Monjalon
2020-09-13 22:06 ` [dpdk-dev] [PATCH 05/20] net/axgbe: " Thomas Monjalon
2020-09-13 22:06 ` [dpdk-dev] [PATCH 06/20] net/bonding: " Thomas Monjalon
2020-09-13 22:06 ` [dpdk-dev] [PATCH 07/20] net/failsafe: " Thomas Monjalon
2020-09-23 21:24   ` Thomas Monjalon
2020-09-13 22:06 ` [dpdk-dev] [PATCH 08/20] net/iavf: " Thomas Monjalon
2020-09-13 22:07 ` [dpdk-dev] [PATCH 09/20] net/mlx4: " Thomas Monjalon
2020-09-13 22:07 ` [dpdk-dev] [PATCH 10/20] net/null: " Thomas Monjalon
2020-09-23 16:44   ` Ferruh Yigit
2020-09-23 20:47     ` Thomas Monjalon
2020-09-24 21:58       ` Thomas Monjalon
2020-09-25  8:52         ` Ferruh Yigit
2020-09-25 13:13           ` Thomas Monjalon
2020-09-13 22:07 ` [dpdk-dev] [PATCH 11/20] net/octeontx: " Thomas Monjalon
2020-09-13 22:07 ` [dpdk-dev] [PATCH 12/20] net/pcap: " Thomas Monjalon
2020-09-23 16:44   ` Ferruh Yigit
2020-09-23 20:44     ` Thomas Monjalon
2020-09-24 11:56       ` Ferruh Yigit
2020-09-13 22:07 ` [dpdk-dev] [PATCH 13/20] net/ring: " Thomas Monjalon
2020-09-14  8:51   ` Bruce Richardson
2020-09-13 22:07 ` [dpdk-dev] [PATCH 14/20] net/softnic: " Thomas Monjalon
2020-09-14 15:21   ` Dumitrescu, Cristian
2020-09-13 22:07 ` [dpdk-dev] [PATCH 15/20] net/tap: " Thomas Monjalon
2020-09-13 22:07 ` [dpdk-dev] [PATCH 16/20] ethdev: remove old close behaviour Thomas Monjalon
2020-09-23 16:44   ` Ferruh Yigit
2020-09-23 20:41     ` Thomas Monjalon
2020-09-24 12:00       ` Ferruh Yigit
2020-09-25  4:31     ` Rasesh Mody
2020-09-13 22:07 ` [dpdk-dev] [PATCH 17/20] drivers/net: accept removing device without any port Thomas Monjalon
2020-09-23 16:45   ` Ferruh Yigit
2020-09-27  6:25   ` Xu, Rosen
2020-09-13 22:07 ` [dpdk-dev] [PATCH 18/20] drivers/net: remove redundant MAC addresses freeing Thomas Monjalon
2020-09-23 16:45   ` Ferruh Yigit
2020-09-13 22:07 ` [dpdk-dev] [PATCH 19/20] app/testpmd: reset port status on close notification Thomas Monjalon
2020-09-23 16:45   ` Ferruh Yigit
2020-09-23 20:32     ` Thomas Monjalon
2020-09-24 12:07       ` Ferruh Yigit
2020-09-24 12:17         ` Thomas Monjalon
2020-09-24 13:06           ` Ferruh Yigit
2020-09-13 22:07 ` [dpdk-dev] [PATCH 20/20] app/testpmd: align behaviour of multi-port detach Thomas Monjalon
2020-09-23 16:44 ` [dpdk-dev] [PATCH 00/20] cleanup ethdev close operation Ferruh Yigit
2020-09-27 23:42 ` [dpdk-dev] [PATCH v2 00/25] " Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 01/25] ethdev: reset device and interrupt pointers on release Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 02/25] ethdev: allow drivers to return error on close Thomas Monjalon
2020-09-28  0:46     ` Xu, Rosen
2020-09-28  9:51     ` Sachin Saxena (OSS)
2020-09-28 18:26     ` [dpdk-dev] [EXT] " Liron Himi
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 03/25] net/af_packet: release port upon close Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 04/25] net/atlantic: " Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 05/25] net/axgbe: " Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 06/25] net/bnx2x: " Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 07/25] net/bonding: " Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 08/25] net/failsafe: " Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 09/25] net/mlx4: " Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 10/25] net/null: " Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 11/25] net/octeontx: " Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 12/25] net/pcap: " Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 13/25] net/qede: " Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 14/25] net/ring: " Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 15/25] net/softnic: " Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 16/25] net/tap: " Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 17/25] ethdev: remove old close behaviour Thomas Monjalon
2020-09-28 18:25     ` [dpdk-dev] [EXT] " Liron Himi
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 18/25] drivers/net: accept removing device without any port Thomas Monjalon
2020-09-28  0:47     ` Xu, Rosen
2020-09-28  9:54     ` Sachin Saxena (OSS)
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 19/25] drivers/net: check process type in close operation Thomas Monjalon
2020-09-27 23:52     ` Thomas Monjalon
2020-09-28  0:50     ` Xu, Rosen
2020-09-28  9:55     ` Sachin Saxena (OSS)
2020-09-28 14:57       ` Ajit Khaparde
2020-09-28 18:25     ` [dpdk-dev] [EXT] " Liron Himi
2020-09-28 18:51     ` [dpdk-dev] " Stephen Hemminger
2020-09-28 20:57       ` Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 20/25] drivers/net: remove redundant MAC addresses freeing Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 21/25] app/testpmd: reset port status on close notification Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 22/25] app/testpmd: align behaviour of multi-port detach Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 23/25] ethdev: remove forcing stopped state upon close Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 24/25] ethdev: reset all when releasing a port Thomas Monjalon
2020-09-27 23:42   ` [dpdk-dev] [PATCH v2 25/25] ethdev: allow close function to return an error Thomas Monjalon
2020-09-28 18:24     ` [dpdk-dev] [EXT] " Liron Himi
2020-09-28 23:14 ` [dpdk-dev] [PATCH v3 00/29] cleanup ethdev close operation Thomas Monjalon
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 01/29] ethdev: reset device and interrupt pointers on release Thomas Monjalon
2020-09-29 10:52     ` Andrew Rybchenko
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 02/29] ethdev: allow drivers to return error on close Thomas Monjalon
2020-09-29  2:16     ` Wang, Haiyue
2020-09-29  5:56     ` Guo, Jia
2020-09-29 10:53     ` Andrew Rybchenko
2020-09-30 12:12       ` Ferruh Yigit
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 03/29] net/af_packet: release port upon close Thomas Monjalon
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 04/29] net/atlantic: " Thomas Monjalon
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 05/29] net/axgbe: " Thomas Monjalon
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 06/29] net/bnx2x: " Thomas Monjalon
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 07/29] net/bonding: " Thomas Monjalon
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 08/29] net/dpaa: " Thomas Monjalon
2020-09-29  4:53     ` Hemant Agrawal
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 09/29] net/dpaa2: " Thomas Monjalon
2020-09-29  4:53     ` Hemant Agrawal
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 10/29] net/enetc: " Thomas Monjalon
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 11/29] net/failsafe: " Thomas Monjalon
2020-10-05 10:19     ` Gaëtan Rivet
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 12/29] net/mlx4: " Thomas Monjalon
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 13/29] net/null: " Thomas Monjalon
2020-09-29 16:47     ` Ferruh Yigit
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 14/29] net/octeontx: " Thomas Monjalon
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 15/29] net/pcap: " Thomas Monjalon
2020-09-29 16:49     ` Ferruh Yigit
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 16/29] net/pfe: " Thomas Monjalon
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 17/29] net/qede: " Thomas Monjalon
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 18/29] net/ring: " Thomas Monjalon
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 19/29] net/softnic: " Thomas Monjalon
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 20/29] net/tap: " Thomas Monjalon
2020-09-30  8:34     ` wangyunjian
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 21/29] ethdev: remove old close behaviour Thomas Monjalon
2020-09-29  2:27     ` Wang, Haiyue
2020-09-29  5:55     ` Guo, Jia
2020-09-29 10:38     ` Andrew Rybchenko
2020-09-29 17:08     ` Ferruh Yigit
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 22/29] drivers/net: accept removing device without any port Thomas Monjalon
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 23/29] drivers/net: check process type in close operation Thomas Monjalon
2020-09-29  2:39     ` Wang, Haiyue
2020-09-29  5:53     ` Guo, Jia
2020-09-29 10:42     ` Andrew Rybchenko
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 24/29] drivers/net: remove redundant MAC addresses freeing Thomas Monjalon
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 25/29] app/testpmd: reset port status on close notification Thomas Monjalon
2020-09-30 12:15     ` Ferruh Yigit
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 26/29] app/testpmd: align behaviour of multi-port detach Thomas Monjalon
2020-09-30 12:17     ` Ferruh Yigit
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 27/29] ethdev: remove forcing stopped state upon close Thomas Monjalon
2020-09-29 10:44     ` Andrew Rybchenko
2020-09-29 16:01     ` Ferruh Yigit
2020-09-29 16:06       ` Thomas Monjalon
2020-09-29 16:39         ` Ferruh Yigit
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 28/29] ethdev: reset all when releasing a port Thomas Monjalon
2020-09-29  2:34     ` Wang, Haiyue
2020-09-29  5:51     ` Guo, Jia
2020-09-29 10:26     ` Maxime Coquelin
2020-09-29 10:36       ` Thomas Monjalon
2020-09-29 11:58         ` Wang, Haiyue
2020-09-29 15:50           ` Ferruh Yigit
2020-09-29 16:02             ` Thomas Monjalon
2020-09-29 16:35               ` Ferruh Yigit
2020-09-30 12:17                 ` Ferruh Yigit
2020-09-29 10:50     ` Andrew Rybchenko
2020-09-28 23:14   ` [dpdk-dev] [PATCH v3 29/29] ethdev: allow close function to return an error Thomas Monjalon
2020-09-29 11:05     ` Andrew Rybchenko
2020-09-29 11:47       ` Thomas Monjalon
2020-09-29 11:54         ` Andrew Rybchenko
2020-09-28 23:33   ` [dpdk-dev] [PATCH v3 00/29] cleanup ethdev close operation Stephen Hemminger
2020-09-30 12:22   ` Ferruh Yigit
2020-10-05 17:08 ` [dpdk-dev] [PATCH v4 0/3] " Thomas Monjalon
2020-10-05 17:08   ` [dpdk-dev] [PATCH v4 1/3] ethdev: remove forcing stopped state upon close Thomas Monjalon
2020-10-05 17:08   ` [dpdk-dev] [PATCH v4 2/3] ethdev: reset all when releasing a port Thomas Monjalon
2020-10-05 17:08   ` [dpdk-dev] [PATCH v4 3/3] ethdev: allow close function to return an error Thomas Monjalon
2020-10-06  9:43     ` Ferruh Yigit
2020-10-06 10:57       ` Thomas Monjalon
2020-10-13  8:40         ` Andrew Rybchenko
2020-10-13  8:55           ` Thomas Monjalon
2020-10-13  9:33             ` Ferruh Yigit [this message]
2020-10-13 10:06 ` [dpdk-dev] [PATCH v5 0/3] cleanup ethdev close operation Thomas Monjalon
2020-10-13 10:06   ` [dpdk-dev] [PATCH v5 1/3] ethdev: remove forcing stopped state upon close Thomas Monjalon
2020-10-13 12:36     ` Ferruh Yigit
2020-10-13 12:49       ` Thomas Monjalon
2020-10-13 12:45     ` Ferruh Yigit
2020-10-13 12:51       ` Thomas Monjalon
2020-10-13 17:54         ` Ferruh Yigit
2020-10-13 17:59           ` Thomas Monjalon
2020-10-13 10:06   ` [dpdk-dev] [PATCH v5 2/3] ethdev: reset all when releasing a port Thomas Monjalon
2020-10-13 13:10     ` Ferruh Yigit
2020-10-13 10:06   ` [dpdk-dev] [PATCH v5 3/3] ethdev: allow close function to return an error Thomas Monjalon
2020-10-13 10:41     ` Andrew Rybchenko
2020-10-13 10:43       ` Thomas Monjalon
2020-10-13 13:10     ` Ferruh Yigit
2020-10-16 13:32 ` [dpdk-dev] [PATCH v6 0/3] cleanup ethdev close operation Thomas Monjalon
2020-10-16 13:32   ` [dpdk-dev] [PATCH v6 1/3] ethdev: remove forcing stopped state upon close Thomas Monjalon
2020-10-16 13:32   ` [dpdk-dev] [PATCH v6 2/3] ethdev: reset all when releasing a port Thomas Monjalon
2020-10-16 15:21     ` Ajit Khaparde
2020-10-16 13:32   ` [dpdk-dev] [PATCH v6 3/3] ethdev: allow close function to return an error Thomas Monjalon
2020-10-16 17:55   ` [dpdk-dev] [PATCH v6 0/3] cleanup ethdev close operation Ferruh Yigit
2020-10-20 12:24     ` Bruce Richardson

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