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From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Andrew Rybchenko <arybchenko@solarflare.com>,
	"John W. Linville" <linville@tuxdriver.com>,
	Xiaolong Ye <xiaolong.ye@intel.com>,
	Qi Zhang <qi.z.zhang@intel.com>,
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Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v2 04/13] ethdev: change promiscuous callbacks to return status
Date: Fri, 13 Sep 2019 16:34:40 +0100	[thread overview]
Message-ID: <7415b465-bcc5-71b4-1a2c-fda5fe359182@intel.com> (raw)
In-Reply-To: <1568030331-16526-5-git-send-email-arybchenko@solarflare.com>

On 9/9/2019 12:58 PM, Andrew Rybchenko wrote:
> Enabling/disabling of promiscuous mode is not always successful and
> it should be taken into account to be able to handle it properly.
> 
> When correct return status is unclear from driver code, -EAGAIN is used.
> 
> Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>

<...>

> diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
> index b97dd8aa85..f2e6b4c83b 100644
> --- a/lib/librte_ethdev/rte_ethdev.c
> +++ b/lib/librte_ethdev/rte_ethdev.c
> @@ -1892,30 +1892,38 @@ int
>  rte_eth_promiscuous_enable(uint16_t port_id)
>  {
>  	struct rte_eth_dev *dev;
> +	uint8_t old_promiscuous;
> +	int diag;
>  
>  	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
>  	dev = &rte_eth_devices[port_id];
>  
>  	RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->promiscuous_enable, -ENOTSUP);
> -	(*dev->dev_ops->promiscuous_enable)(dev);
> -	dev->data->promiscuous = 1;
> +	old_promiscuous = dev->data->promiscuous;
> +	diag = (*dev->dev_ops->promiscuous_enable)(dev);
> +	dev->data->promiscuous = (diag == 0) ? 1 : old_promiscuous;
>  
> -	return 0;
> +	return eth_err(port_id, diag);
>  }
>  
>  int
>  rte_eth_promiscuous_disable(uint16_t port_id)
>  {
>  	struct rte_eth_dev *dev;
> +	uint8_t old_promiscuous;
> +	int diag;
>  
>  	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
>  	dev = &rte_eth_devices[port_id];
>  
>  	RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->promiscuous_disable, -ENOTSUP);
> +	old_promiscuous = dev->data->promiscuous;
>  	dev->data->promiscuous = 0;
> -	(*dev->dev_ops->promiscuous_disable)(dev);
> +	diag = (*dev->dev_ops->promiscuous_disable)(dev);
> +	if (diag != 0)
> +		dev->data->promiscuous = old_promiscuous;

Not a real issue, but the enable/disable does exact same thing, slightly
different way, it makes double check if logic is different,
can you adapt one of them for both please.

"
diag = foo();
dev->data->promiscuous = (diag == 0) ? 1 : old_promiscuous;
"
vs

"
dev->data->promiscuous = 0;
diag = bar();
if (diag != 0)
	dev->data->promiscuous = old_promiscuous;
"

>  
> -	return 0;
> +	return eth_err(port_id, diag);
>  }
>  
>  int
> diff --git a/lib/librte_ethdev/rte_ethdev_core.h b/lib/librte_ethdev/rte_ethdev_core.h
> index 2394b32c83..6322348d17 100644
> --- a/lib/librte_ethdev/rte_ethdev_core.h
> +++ b/lib/librte_ethdev/rte_ethdev_core.h
> @@ -52,10 +52,10 @@ typedef int (*eth_dev_reset_t)(struct rte_eth_dev *dev);
>  typedef int (*eth_is_removed_t)(struct rte_eth_dev *dev);
>  /**< @internal Function used to detect an Ethernet device removal. */
>  
> -typedef void (*eth_promiscuous_enable_t)(struct rte_eth_dev *dev);
> +typedef int (*eth_promiscuous_enable_t)(struct rte_eth_dev *dev);
>  /**< @internal Function used to enable the RX promiscuous mode of an Ethernet device. */
>  
> -typedef void (*eth_promiscuous_disable_t)(struct rte_eth_dev *dev);
> +typedef int (*eth_promiscuous_disable_t)(struct rte_eth_dev *dev);
>  /**< @internal Function used to disable the RX promiscuous mode of an Ethernet device. */

Should we add a note what is expected return value? This information is not
available anyplace, it may help driver developers.


  parent reply	other threads:[~2019-09-13 15:34 UTC|newest]

Thread overview: 77+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-05 16:10 [dpdk-dev] [PATCH 00/13] ethdev: change promiscuous mode functions " Andrew Rybchenko
2019-09-05 16:10 ` [dpdk-dev] [PATCH 01/13] ethdev: change promiscuous mode controllers to return errors Andrew Rybchenko
2019-09-05 16:10 ` [dpdk-dev] [PATCH 02/13] net/failsafe: check code of promiscuous mode switch Andrew Rybchenko
2019-09-05 16:25   ` Gaëtan Rivet
2019-09-05 16:32     ` Andrew Rybchenko
2019-09-05 16:36   ` Stephen Hemminger
2019-09-05 16:38     ` Andrew Rybchenko
2019-09-06  9:24       ` Gaëtan Rivet
2019-09-06 10:08         ` Andrew Rybchenko
2019-09-05 16:40   ` Stephen Hemminger
2019-09-05 16:49     ` Andrew Rybchenko
2019-09-05 17:13       ` Stephen Hemminger
2019-09-05 16:10 ` [dpdk-dev] [PATCH 03/13] net/bonding: " Andrew Rybchenko
2019-09-05 16:10 ` [dpdk-dev] [PATCH 04/13] ethdev: change promiscuous callbacks to return status Andrew Rybchenko
2019-09-05 16:10 ` [dpdk-dev] [PATCH 05/13] ethdev: do nothing if promiscuous mode is applied again Andrew Rybchenko
2019-09-05 16:10 ` [dpdk-dev] [PATCH 06/13] app/pipeline: check code of promiscuous mode switch Andrew Rybchenko
2019-09-05 16:10 ` [dpdk-dev] [PATCH 07/13] app/testpmd: " Andrew Rybchenko
2019-09-05 16:10 ` [dpdk-dev] [PATCH 08/13] app/eventdev: " Andrew Rybchenko
2019-09-05 16:10 ` [dpdk-dev] [PATCH 09/13] app/pdump: " Andrew Rybchenko
2019-09-05 16:10 ` [dpdk-dev] [PATCH 10/13] app/test: " Andrew Rybchenko
2019-09-05 16:10 ` [dpdk-dev] [PATCH 11/13] kni: " Andrew Rybchenko
2019-09-05 16:10 ` [dpdk-dev] [PATCH 12/13] test/bonding: " Andrew Rybchenko
2019-09-05 16:10 ` [dpdk-dev] [PATCH 13/13] examples: take promiscuous mode switch result into account Andrew Rybchenko
2019-09-09 11:58 ` [dpdk-dev] [PATCH v2 00/13] ethdev: change promiscuous mode functions to return status Andrew Rybchenko
2019-09-09 11:58   ` [dpdk-dev] [PATCH v2 01/13] ethdev: change promiscuous mode controllers to return errors Andrew Rybchenko
2019-09-13 15:35     ` Ferruh Yigit
2019-09-09 11:58   ` [dpdk-dev] [PATCH v2 02/13] net/failsafe: check code of promiscuous mode switch Andrew Rybchenko
2019-09-09 12:48     ` Gaëtan Rivet
2019-09-09 11:58   ` [dpdk-dev] [PATCH v2 03/13] net/bonding: " Andrew Rybchenko
2019-09-09 11:58   ` [dpdk-dev] [PATCH v2 04/13] ethdev: change promiscuous callbacks to return status Andrew Rybchenko
2019-09-10  7:53     ` Matan Azrad
2019-09-13 21:05       ` Andrew Rybchenko
2019-09-11  8:46     ` Hyong Youb Kim (hyonkim)
2019-09-13 21:06       ` Andrew Rybchenko
2019-09-16  6:48         ` Hyong Youb Kim (hyonkim)
2019-09-13 15:34     ` Ferruh Yigit [this message]
2019-09-13 15:54       ` Andrew Rybchenko
2019-09-13 16:33         ` Ferruh Yigit
2019-09-13 15:39     ` Ferruh Yigit
2019-09-13 16:05       ` Andrew Rybchenko
2019-09-13 16:34         ` Ferruh Yigit
2019-09-13 19:57           ` Andrew Rybchenko
2019-09-16 13:22             ` Ferruh Yigit
2019-09-16 15:45               ` Andrew Rybchenko
2019-09-16 15:58                 ` Ferruh Yigit
2019-09-13 16:43     ` Ferruh Yigit
2019-09-13 20:33       ` Andrew Rybchenko
2019-09-13 16:56     ` Ferruh Yigit
2019-09-13 20:38       ` Andrew Rybchenko
2019-09-09 11:58   ` [dpdk-dev] [PATCH v2 05/13] ethdev: do nothing if promiscuous mode is applied again Andrew Rybchenko
2019-09-09 11:58   ` [dpdk-dev] [PATCH v2 06/13] app/pipeline: check code of promiscuous mode switch Andrew Rybchenko
2019-09-09 11:58   ` [dpdk-dev] [PATCH v2 07/13] app/testpmd: " Andrew Rybchenko
2019-09-09 11:58   ` [dpdk-dev] [PATCH v2 08/13] app/eventdev: " Andrew Rybchenko
2019-09-09 11:58   ` [dpdk-dev] [PATCH v2 09/13] app/pdump: " Andrew Rybchenko
2019-09-09 11:58   ` [dpdk-dev] [PATCH v2 10/13] app/test: " Andrew Rybchenko
2019-09-09 11:58   ` [dpdk-dev] [PATCH v2 11/13] kni: " Andrew Rybchenko
2019-09-09 11:58   ` [dpdk-dev] [PATCH v2 12/13] test/bonding: " Andrew Rybchenko
2019-09-09 11:58   ` [dpdk-dev] [PATCH v2 13/13] examples: take promiscuous mode switch result into account Andrew Rybchenko
2019-09-13 16:40     ` Ferruh Yigit
2019-09-13 18:30       ` Andrew Rybchenko
2019-09-13 16:37   ` [dpdk-dev] [PATCH v2 00/13] ethdev: change promiscuous mode functions to return status Ferruh Yigit
2019-09-14 11:37 ` [dpdk-dev] [PATCH v3 " Andrew Rybchenko
2019-09-14 11:37   ` [dpdk-dev] [PATCH v3 01/13] ethdev: change promiscuous mode controllers to return errors Andrew Rybchenko
2019-09-14 11:37   ` [dpdk-dev] [PATCH v3 02/13] net/failsafe: check code of promiscuous mode switch Andrew Rybchenko
2019-09-14 11:37   ` [dpdk-dev] [PATCH v3 03/13] net/bonding: " Andrew Rybchenko
2019-09-14 11:37   ` [dpdk-dev] [PATCH v3 04/13] ethdev: change promiscuous callbacks to return status Andrew Rybchenko
2019-09-14 11:37   ` [dpdk-dev] [PATCH v3 05/13] ethdev: do nothing if promiscuous mode is applied again Andrew Rybchenko
2019-09-14 11:37   ` [dpdk-dev] [PATCH v3 06/13] app/pipeline: check code of promiscuous mode switch Andrew Rybchenko
2019-09-14 11:37   ` [dpdk-dev] [PATCH v3 07/13] app/testpmd: " Andrew Rybchenko
2019-09-16 13:18     ` Iremonger, Bernard
2019-09-14 11:37   ` [dpdk-dev] [PATCH v3 08/13] app/eventdev: " Andrew Rybchenko
2019-09-14 11:37   ` [dpdk-dev] [PATCH v3 09/13] app/pdump: " Andrew Rybchenko
2019-09-14 11:37   ` [dpdk-dev] [PATCH v3 10/13] app/test: " Andrew Rybchenko
2019-09-14 11:37   ` [dpdk-dev] [PATCH v3 11/13] kni: " Andrew Rybchenko
2019-09-14 11:37   ` [dpdk-dev] [PATCH v3 12/13] test/bonding: " Andrew Rybchenko
2019-09-14 11:37   ` [dpdk-dev] [PATCH v3 13/13] examples: take promiscuous mode switch result into account Andrew Rybchenko
2019-09-24  7:31   ` [dpdk-dev] [PATCH v3 00/13] ethdev: change promiscuous mode functions to return status Ferruh Yigit

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