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From: Andrew Rybchenko <arybchenko@solarflare.com>
To: Ferruh Yigit <ferruh.yigit@intel.com>,
	"John W. Linville" <linville@tuxdriver.com>,
	Xiaolong Ye <xiaolong.ye@intel.com>,
	Qi Zhang <qi.z.zhang@intel.com>,
	Igor Russkikh <igor.russkikh@aquantia.com>,
	"Pavel Belous" <pavel.belous@aquantia.com>,
	Allain Legacy <allain.legacy@windriver.com>,
	Matt Peters <matt.peters@windriver.com>,
	"Ravi Kumar" <ravi1.kumar@amd.com>,
	Rasesh Mody <rmody@marvell.com>,
	Shahed Shaikh <shshaikh@marvell.com>,
	Ajit Khaparde <ajit.khaparde@broadcom.com>,
	"Somnath Kotur" <somnath.kotur@broadcom.com>,
	Chas Williams <chas3@att.com>,
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	Gaetan Rivet <gaetan.rivet@6wind.com>,
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	Konstantin Ananyev <konstantin.ananyev@intel.com>,
	Shijith Thotton <sthotton@marvell.com>,
	Srisivasubramanian Srinivasan <srinivasan@marvell.com>,
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	Nithin Dabilpuram <ndabilpuram@marvell.com>,
	"Kiran Kumar K" <kirankumark@marvell.com>,
	Keith Wiles <keith.wiles@intel.com>,
	Maciej Czekaj <mczekaj@marvell.com>,
	Maxime Coquelin <maxime.coquelin@redhat.com>,
	Tiwei Bie <tiwei.bie@intel.com>,
	Zhihong Wang <zhihong.wang@intel.com>,
	Yong Wang <yongwang@vmware.com>,
	Thomas Monjalon <thomas@monjalon.net>
Cc: <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v2 04/13] ethdev: change promiscuous callbacks to return status
Date: Fri, 13 Sep 2019 22:57:31 +0300
Message-ID: <60e4ec91-7f2c-890a-b8d6-237f09b17c11@solarflare.com> (raw)
In-Reply-To: <1c8c01b2-b244-5cf9-8687-9ee897c73f7c@intel.com>

On 9/13/19 7:34 PM, Ferruh Yigit wrote:
> On 9/13/2019 5:05 PM, Andrew Rybchenko wrote:
>> On 9/13/19 6:39 PM, Ferruh Yigit wrote:
>>> 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/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c
>>>> index f85458c3cd..41612ce838 100644
>>>> --- a/drivers/net/tap/rte_eth_tap.c
>>>> +++ b/drivers/net/tap/rte_eth_tap.c
>>>> @@ -1100,28 +1100,60 @@ tap_link_update(struct rte_eth_dev *dev, int wait_to_complete __rte_unused)
>>>>    	return 0;
>>>>    }
>>>>    
>>>> -static void
>>>> +static int
>>>>    tap_promisc_enable(struct rte_eth_dev *dev)
>>>>    {
>>>>    	struct pmd_internals *pmd = dev->data->dev_private;
>>>>    	struct ifreq ifr = { .ifr_flags = IFF_PROMISC };
>>>> +	int ret;
>>>>    
>>>> -	dev->data->promiscuous = 1;
>>>> -	tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 1, LOCAL_AND_REMOTE);
>>>> -	if (pmd->remote_if_index && !pmd->flow_isolate)
>>>> -		tap_flow_implicit_create(pmd, TAP_REMOTE_PROMISC);
>>>> +	ret = tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 1, LOCAL_AND_REMOTE);
>>>> +	if (ret != 0)
>>>> +		return ret;
>>>> +
>>>> +	if (pmd->remote_if_index && !pmd->flow_isolate) {
>>>> +		dev->data->promiscuous = 1;
>>> I think PMD shouldn't be setting this variable, it is already set by the API.
>>> I quickly checked if an internal function requires this but it looks like it has
>>> been set by mistake, I think we can remove this.
>> It is set after callback in the case of enable.
> I see, but do we need it enabled earlier?

Not sure that I understand the question, but tap_ioctl() does not use it.
So, it is safe to move just before tap_flow_implicit_create().

>>>> +		ret = tap_flow_implicit_create(pmd, TAP_REMOTE_PROMISC);
>>>> +		if (ret != 0) {
>>>> +			/* Rollback promisc flag */
>>>> +			tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 0, LOCAL_AND_REMOTE);
>>>> +			/*
>>>> +			 * rte_eth_dev_promiscuous_enable() rollback
>>>> +			 * dev->data->promiscuous in the case of failure.
>>>> +			 */
>>>> +			return ret;
>>>> +		}
>>>> +	}
>>>> +
>>>> +	return 0;
>>>>    }
>>>>    
>>>> -static void
>>>> +static int
>>>>    tap_promisc_disable(struct rte_eth_dev *dev)
>>>>    {
>>>>    	struct pmd_internals *pmd = dev->data->dev_private;
>>>>    	struct ifreq ifr = { .ifr_flags = IFF_PROMISC };
>>>> +	int ret;
>>>>    
>>>> -	dev->data->promiscuous = 0;
>>>> -	tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 0, LOCAL_AND_REMOTE);
>>>> -	if (pmd->remote_if_index && !pmd->flow_isolate)
>>>> -		tap_flow_implicit_destroy(pmd, TAP_REMOTE_PROMISC);
>>>> +	ret = tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 0, LOCAL_AND_REMOTE);
>>>> +	if (ret != 0)
>>>> +		return ret;
>>>> +
>>>> +	if (pmd->remote_if_index && !pmd->flow_isolate) {
>>>> +		dev->data->promiscuous = 0;
>>> Ditto
>>>
>>>> +		ret = tap_flow_implicit_destroy(pmd, TAP_REMOTE_PROMISC);
>>>> +		if (ret != 0) {
>>>> +			/* Rollback promisc flag */
>>>> +			tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 1, LOCAL_AND_REMOTE);
>>>> +			/*
>>>> +			 * rte_eth_dev_promiscuous_disable() rollback
>>>> +			 * dev->data->promiscuous in the case of failure.
>>>> +			 */
>>>> +			return ret;
>>>> +		}
>>>> +	}
>>>> +
>>>> +	return 0;
>>>>    }


  reply index

Thread overview: 74+ 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
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 [this message]
2019-09-16 13:22             ` 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

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