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[net-next,RFC,04/12] net: dsa: Add ordered workqueue

Message ID 1499268990-19251-5-git-send-email-arkadis@mellanox.com
State RFC, archived
Delegated to: David Miller
Headers show

Commit Message

Arkadi Sharshevsky July 5, 2017, 3:36 p.m. UTC
This workqueue will be used for FDB add/del processing. It should
be destroyed after all devices unregistered successfully.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
---
 include/net/dsa.h |  1 +
 net/dsa/dsa.c     | 13 +++++++++++++
 2 files changed, 14 insertions(+)

Comments

Florian Fainelli July 5, 2017, 7:37 p.m. UTC | #1
On 07/05/2017 08:36 AM, Arkadi Sharshevsky wrote:
> This workqueue will be used for FDB add/del processing. It should
> be destroyed after all devices unregistered successfully.
> 
> Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
> ---
>  include/net/dsa.h |  1 +
>  net/dsa/dsa.c     | 13 +++++++++++++
>  2 files changed, 14 insertions(+)
> 
> diff --git a/include/net/dsa.h b/include/net/dsa.h
> index f054d41..4835b0e 100644
> --- a/include/net/dsa.h
> +++ b/include/net/dsa.h
> @@ -451,6 +451,7 @@ void unregister_switch_driver(struct dsa_switch_driver *type);
>  struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev);
>  
>  struct net_device *dsa_dev_to_net_device(struct device *dev);
> +bool dsa_schedule_work(struct work_struct *work);

I'd move this to dsa_priv.h in net/dsa/ because it is not supposed to be
used by DSA drivers.

You may also consider squashing this into the next patch since in itself
it's not used just yet.

>  
>  /* Keep inline for faster access in hot path */
>  static inline bool netdev_uses_dsa(struct net_device *dev)
> diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
> index 416ac4e..9abe6dc 100644
> --- a/net/dsa/dsa.c
> +++ b/net/dsa/dsa.c
> @@ -271,10 +271,22 @@ static struct packet_type dsa_pack_type __read_mostly = {
>  	.func	= dsa_switch_rcv,
>  };
>  
> +static struct workqueue_struct *dsa_owq;
> +
> +bool dsa_schedule_work(struct work_struct *work)
> +{
> +	return queue_work(dsa_owq, work);
> +}
> +
>  static int __init dsa_init_module(void)
>  {
>  	int rc;
>  
> +	dsa_owq = alloc_ordered_workqueue("dsa_ordered",
> +					  WQ_MEM_RECLAIM);
> +	if (!dsa_owq)
> +		return -ENOMEM;
> +
>  	rc = dsa_slave_register_notifier();
>  	if (rc)
>  		return rc;
> @@ -294,6 +306,7 @@ static void __exit dsa_cleanup_module(void)
>  	dsa_slave_unregister_notifier();
>  	dev_remove_pack(&dsa_pack_type);
>  	dsa_legacy_unregister();
> +	destroy_workqueue(dsa_owq);
>  }
>  module_exit(dsa_cleanup_module);
>  
>
Vivien Didelot July 6, 2017, 6:45 p.m. UTC | #2
Hi Arkadi,

Florian Fainelli <f.fainelli@gmail.com> writes:

> On 07/05/2017 08:36 AM, Arkadi Sharshevsky wrote:
>> This workqueue will be used for FDB add/del processing. It should
>> be destroyed after all devices unregistered successfully.
>> 
>> Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
>> ---
>>  include/net/dsa.h |  1 +
>>  net/dsa/dsa.c     | 13 +++++++++++++
>>  2 files changed, 14 insertions(+)
>> 
>> diff --git a/include/net/dsa.h b/include/net/dsa.h
>> index f054d41..4835b0e 100644
>> --- a/include/net/dsa.h
>> +++ b/include/net/dsa.h
>> @@ -451,6 +451,7 @@ void unregister_switch_driver(struct dsa_switch_driver *type);
>>  struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev);
>>  
>>  struct net_device *dsa_dev_to_net_device(struct device *dev);
>> +bool dsa_schedule_work(struct work_struct *work);
>
> I'd move this to dsa_priv.h in net/dsa/ because it is not supposed to be
> used by DSA drivers.
>
> You may also consider squashing this into the next patch since in itself
> it's not used just yet.

I agree with Florian on this. Even though it'll make the next patch a
bit bigger, it'll make it easier to understand the whole workqueue
processing logic.

Thanks,

        Vivien
Arkadi Sharshevsky July 9, 2017, 12:56 p.m. UTC | #3
On 07/06/2017 09:45 PM, Vivien Didelot wrote:
> Hi Arkadi,
> 
> Florian Fainelli <f.fainelli@gmail.com> writes:
> 
>> On 07/05/2017 08:36 AM, Arkadi Sharshevsky wrote:
>>> This workqueue will be used for FDB add/del processing. It should
>>> be destroyed after all devices unregistered successfully.
>>>
>>> Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
>>> ---
>>>  include/net/dsa.h |  1 +
>>>  net/dsa/dsa.c     | 13 +++++++++++++
>>>  2 files changed, 14 insertions(+)
>>>
>>> diff --git a/include/net/dsa.h b/include/net/dsa.h
>>> index f054d41..4835b0e 100644
>>> --- a/include/net/dsa.h
>>> +++ b/include/net/dsa.h
>>> @@ -451,6 +451,7 @@ void unregister_switch_driver(struct dsa_switch_driver *type);
>>>  struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev);
>>>  
>>>  struct net_device *dsa_dev_to_net_device(struct device *dev);
>>> +bool dsa_schedule_work(struct work_struct *work);
>>
>> I'd move this to dsa_priv.h in net/dsa/ because it is not supposed to be
>> used by DSA drivers.
>>
>> You may also consider squashing this into the next patch since in itself
>> it's not used just yet.
> 
> I agree with Florian on this. Even though it'll make the next patch a
> bit bigger, it'll make it easier to understand the whole workqueue
> processing logic.
> 
> Thanks,
> 
>         Vivien
> 

Ok no problem, will squash.
Thanks
diff mbox

Patch

diff --git a/include/net/dsa.h b/include/net/dsa.h
index f054d41..4835b0e 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -451,6 +451,7 @@  void unregister_switch_driver(struct dsa_switch_driver *type);
 struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev);
 
 struct net_device *dsa_dev_to_net_device(struct device *dev);
+bool dsa_schedule_work(struct work_struct *work);
 
 /* Keep inline for faster access in hot path */
 static inline bool netdev_uses_dsa(struct net_device *dev)
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index 416ac4e..9abe6dc 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -271,10 +271,22 @@  static struct packet_type dsa_pack_type __read_mostly = {
 	.func	= dsa_switch_rcv,
 };
 
+static struct workqueue_struct *dsa_owq;
+
+bool dsa_schedule_work(struct work_struct *work)
+{
+	return queue_work(dsa_owq, work);
+}
+
 static int __init dsa_init_module(void)
 {
 	int rc;
 
+	dsa_owq = alloc_ordered_workqueue("dsa_ordered",
+					  WQ_MEM_RECLAIM);
+	if (!dsa_owq)
+		return -ENOMEM;
+
 	rc = dsa_slave_register_notifier();
 	if (rc)
 		return rc;
@@ -294,6 +306,7 @@  static void __exit dsa_cleanup_module(void)
 	dsa_slave_unregister_notifier();
 	dev_remove_pack(&dsa_pack_type);
 	dsa_legacy_unregister();
+	destroy_workqueue(dsa_owq);
 }
 module_exit(dsa_cleanup_module);