netdev - Re: [PATCH net-next v3 07/24] ovpn: introduce the ovpn

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Date: Mon, 13 May 2024 12:53:09 +0200
From: Antonio Quartulli <antonio@...nvpn.net>
To: Simon Horman <horms@...nel.org>
Cc: netdev@...r.kernel.org
Subject: Re: [PATCH net-next v3 07/24] ovpn: introduce the ovpn_peer object

On 13/05/2024 12:09, Simon Horman wrote:
> On Mon, May 06, 2024 at 03:16:20AM +0200, Antonio Quartulli wrote:
>> An ovpn_peer object holds the whole status of a remote peer
>> (regardless whether it is a server or a client).
>>
>> This includes status for crypto, tx/rx buffers, napi, etc.
>>
>> Only support for one peer is introduced (P2P mode).
>> Multi peer support is introduced with a later patch.
>>
>> Along with the ovpn_peer, also the ovpn_bind object is introcued
>> as the two are strictly related.
>> An ovpn_bind object wraps a sockaddr representing the local
>> coordinates being used to talk to a specific peer.
>>
>> Signed-off-by: Antonio Quartulli <antonio@...nvpn.net>
> 
> ...
> 
>> diff --git a/drivers/net/ovpn/ovpnstruct.h b/drivers/net/ovpn/ovpnstruct.h
>> index ee05b8a2c61d..b79d4f0474b0 100644
>> --- a/drivers/net/ovpn/ovpnstruct.h
>> +++ b/drivers/net/ovpn/ovpnstruct.h
>> @@ -17,12 +17,19 @@
>>    * @dev: the actual netdev representing the tunnel
>>    * @registered: whether dev is still registered with netdev or not
>>    * @mode: device operation mode (i.e. p2p, mp, ..)
>> + * @lock: protect this object
>> + * @event_wq: used to schedule generic events that may sleep and that need to be
>> + *            performed outside of softirq context
> 
> nit: events_wq

Thanks for the report. I fixed this locally already.

You don't know how long I had to stare at the kdoc warning and the code 
in order to realize that I missed a 's' :-S

Regards,

> 
>> + * @peer: in P2P mode, this is the only remote peer
>>    * @dev_list: entry for the module wide device list
>>    */
>>   struct ovpn_struct {
>>   	struct net_device *dev;
>>   	bool registered;
>>   	enum ovpn_mode mode;
>> +	spinlock_t lock; /* protect writing to the ovpn_struct object */
>> +	struct workqueue_struct *events_wq;
>> +	struct ovpn_peer __rcu *peer;
>>   	struct list_head dev_list;
>>   };
>>   
> 
> ...

-- 
Antonio Quartulli
OpenVPN Inc.