From: Florian Fainelli <f.fainelli@gmail.com>
To: Ido Schimmel <idosch@mellanox.com>
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"andrew@lunn.ch" <andrew@lunn.ch>,
"vivien.didelot@gmail.com" <vivien.didelot@gmail.com>,
"davem@davemloft.net" <davem@davemloft.net>,
Jiri Pirko <jiri@mellanox.com>,
"ilias.apalodimas@linaro.org" <ilias.apalodimas@linaro.org>,
"ivan.khoronzhuk@linaro.org" <ivan.khoronzhuk@linaro.org>,
"roopa@cumulusnetworks.com" <roopa@cumulusnetworks.com>,
"nikolay@cumulusnetworks.com" <nikolay@cumulusnetworks.com>,
Petr Machata <petrm@mellanox.com>
Subject: Re: [PATCH net-next v2 01/12] net: bridge: multicast: Propagate br_mc_disabled_update() return
Date: Thu, 31 Jan 2019 17:19:25 -0800 [thread overview]
Message-ID: <061dca81-a5ed-1498-060a-1a7a0e0a1116@gmail.com> (raw)
In-Reply-To: <20190131075013.GA27839@splinter>
On 1/30/19 11:50 PM, Ido Schimmel wrote:
> On Wed, Jan 30, 2019 at 05:00:57PM -0800, Florian Fainelli wrote:
>> On 1/29/19 11:36 PM, Ido Schimmel wrote:
>>> On Tue, Jan 29, 2019 at 04:55:37PM -0800, Florian Fainelli wrote:
>>>> -static void br_mc_disabled_update(struct net_device *dev, bool value)
>>>> +static int br_mc_disabled_update(struct net_device *dev, bool value)
>>>> {
>>>> struct switchdev_attr attr = {
>>>> .orig_dev = dev,
>>>> .id = SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED,
>>>> - .flags = SWITCHDEV_F_DEFER,
>>>> + .flags = SWITCHDEV_F_DEFER | SWITCHDEV_F_SKIP_EOPNOTSUPP,
>>>
>>> Actually, since the operation is deferred I don't think the return value
>>> from the driver is ever checked. Can you test it?
>>
>> You are right, you get a WARN() from switchdev_attr_port_set_now(), but
>> this does not propagate back to the caller, so you can still create a
>> bridge device and enslave a device successfully despite getting warnings
>> on the console.
>>
>>>
>>> I think it would be good to convert the attributes to use the switchdev
>>> notifier like commit d17d9f5e5143 ("switchdev: Replace port obj add/del
>>> SDO with a notification") did for objects. Then you can have your
>>> listener veto the operation in the same context it is happening.
>>
>> Alright, working on it. Would you do that just for the attr_set, or for
>> attr_get as well (to be symmetrical)?
>
> Yes, then we can get rid of switchdev_ops completely.
>
OK, so here is what I have so far:
https://github.com/ffainelli/linux/pull/new/switchdev-attr
although I am seeing some invalid context operations with DSA that I am
debugging. Does this look like the right way to go from your perspective?
--
Florian
next prev parent reply other threads:[~2019-02-01 1:19 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-30 0:55 [PATCH net-next v2 00/12] net: dsa: management mode for bcm_sf2 Florian Fainelli
2019-01-30 0:55 ` [PATCH net-next v2 01/12] net: bridge: multicast: Propagate br_mc_disabled_update() return Florian Fainelli
2019-01-30 7:36 ` Ido Schimmel
2019-01-31 1:00 ` Florian Fainelli
2019-01-31 7:50 ` Ido Schimmel
2019-02-01 1:19 ` Florian Fainelli [this message]
2019-02-02 15:47 ` Ido Schimmel
2019-02-11 19:05 ` Florian Fainelli
2019-01-30 0:55 ` [PATCH net-next v2 02/12] net: dsa: b53: Fix default VLAN ID Florian Fainelli
2019-01-30 0:55 ` [PATCH net-next v2 03/12] net: dsa: b53: Properly account for VLAN filtering Florian Fainelli
2019-01-30 0:55 ` [PATCH net-next v2 04/12] net: systemport: Fix reception of BPDUs Florian Fainelli
2019-01-30 0:55 ` [PATCH net-next v2 05/12] net: dsa: b53: Define registers for IGMP snooping Florian Fainelli
2019-01-30 0:55 ` [PATCH net-next v2 06/12] net: dsa: b53: Add support for MDB Florian Fainelli
2019-01-30 0:55 ` [PATCH net-next v2 07/12] net: dsa: Add ability to program multicast filter for CPU port Florian Fainelli
2019-01-30 22:28 ` Vivien Didelot
2019-01-30 22:55 ` Florian Fainelli
2019-01-30 0:55 ` [PATCH net-next v2 08/12] net: dsa: Add ndo_vlan_rx_{add,kill}_vid implementation Florian Fainelli
2019-01-30 22:38 ` Vivien Didelot
2019-01-30 0:55 ` [PATCH net-next v2 09/12] net: dsa: Make VLAN filtering use DSA notifiers Florian Fainelli
2019-01-30 0:55 ` [PATCH net-next v2 10/12] net: dsa: Wire up multicast IGMP snooping attribute notification Florian Fainelli
2019-01-30 16:06 ` Andrew Lunn
2019-01-30 22:32 ` Florian Fainelli
2019-01-30 22:46 ` Andrew Lunn
2019-01-30 23:02 ` Florian Fainelli
2019-01-30 0:55 ` [PATCH net-next v2 11/12] net: dsa: b53: Add support for toggling IGMP snooping Florian Fainelli
2019-01-30 0:55 ` [PATCH net-next v2 12/12] net: dsa: bcm_sf2: Enable management mode Florian Fainelli
2019-01-30 7:38 ` [PATCH net-next v2 00/12] net: dsa: management mode for bcm_sf2 Ido Schimmel
2019-01-30 22:23 ` David Miller
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