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Re: [PATCH v3 1/3] cfg80211: leave invalid channels on regdomain change

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On Tue, Nov 25, 2014 at 9:38 PM, Luis R. Rodriguez <mcgrof@xxxxxxxx> wrote:
> On Sun, Nov 23, 2014 at 05:02:19PM +0200, Arik Nemtsov wrote:
>> When the regulatory settings change, some channels might become invalid.
>> Disconnect interfaces acting on these channels, after giving userspace
>> code a grace period to leave them.
>>
>> This mode is currently opt-in, and not all interface operating modes are
>> supported for regulatory-enforcement checks. A wiphy that wishes to use
>> the new enforcement code must specify an appropriate regulatory flag,
>> and all its supported interface modes must be supported by the chekcing
>> code.
>
> This is all looking beter now, since I had a few requests for the last patch
> I'll ask for some other things here without asking  to negage the flag purpose
> as I originally wanted.
>
>> Signed-off-by: Arik Nemtsov <arikx.nemtsov@xxxxxxxxx>
>> ---
>>  include/net/regulatory.h |   6 +++
>>  net/wireless/core.c      |  13 ++++++
>>  net/wireless/reg.c       | 106 ++++++++++++++++++++++++++++++++++++++++++++++-
>>  3 files changed, 124 insertions(+), 1 deletion(-)
>>
>> diff --git a/include/net/regulatory.h b/include/net/regulatory.h
>> index dad7ab2..701177c 100644
>> --- a/include/net/regulatory.h
>> +++ b/include/net/regulatory.h
>> @@ -136,6 +136,11 @@ struct regulatory_request {
>>   *      otherwise initiating radiation is not allowed. This will enable the
>>   *      relaxations enabled under the CFG80211_REG_RELAX_NO_IR configuration
>>   *      option
>> + * @REGULATORY_ENFORCE_CHANNELS: the regulatory core will make sure all
>> + *   interfaces on this wiphy reside on allowed channels. Upon a regdomain
>> + *   change, the interfaces are given a grace period to disconnect or move
>> + *   to an allowed channels. Interfaces on forbidden channels are forcibly
>> + *   disconnected.
>
> Please rename to REGULATORY_IGNORE_STALE_KICKOFF, also please add
> some information about the amount current of grace period used,
> and types of interfaces supported. Since this is a regulatory flag
> this information will help folks decide whether to enable or not.
> Also encourage its use, and mention that once all supported devices
> get support for this will be enabled by default. In the meantime
> I'd prefer if this feature was enabled by default if the supported
> interface types of a dveice match the white list of supported
> interfaces.

btw, I think you meant REGULATORY_STALE_KICKOFF, since it's an opt-in flag.

Arik
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