[RFC 0/5] Dynamic VLAN improvements

Helmut Schaa helmut.schaa at googlemail.com
Mon Feb 2 09:55:34 EST 2015

Hi Jouni,

On Sun, Feb 1, 2015 at 11:43 AM, Jouni Malinen <j at w1.fi> wrote:
> On Mon, Mar 17, 2014 at 02:16:23PM +0100, Helmut Schaa wrote:
>> hostapd has full dynamic VLAN support. However, the current implementation
>> does not allow to use random bridge names.
>> So, instead of letting hostapd "core" generate bridges with fixed names
>> on the fly allow hostapd.vlan to specify bridge names per VLAN or a generic
>> bridge name template with a placeholder.
>> Furthermore bridging is pushed down into the driver.
>> The full dynamic vlan option is kept in the code base to stay backwards
>> compatible.
>> Sending as RFC for now.
> Did you continue to work on this?

I wouldn't say "continue to work on" :) but I'm still carrying this in my tree.

>> Helmut Schaa (5):
>>   hostapd: Simplify vlan_add_dynamic error paths
>>   hostapd: Add more flexible VLAN briging
>>   driver_nl80211: Factor out bss bridge status into its own struct
>>   driver_nl80211: Allow bridging of AP_VLAN interfaces
>>   hostapd: Reduce indention in vlan_dynamic_add
> There were couple of issues in vlan_add_dynamic() (like dereferencing
> the 'n' pointer prior to it having been allocated and running
> os_strchr() of vlan->bridge instead the strdup'ed brname copy of it).
> With those fixed and patches rebased on top of the current tree, this
> seems to be otherwise working, but there are some issues with bridge
> interface setup. I did not look at what exactly was causing this, but it
> looked like both the "old style" and "new style" bridge interfaces were
> created and the new ones were not set up in my testing.
> I think I'll apply the first patch now.

Ok, no objection to that.

> If you want to get the other
> ones in, please take a look at the rebased version here:
> http://w1.fi/p/vlan/

Thanks for rebasing and fixing the issues pointed out above.
I'll have a look at it soon.

> I'd like to get that ap_vlan_br_file_open hwsim test case fixed. Either
> there is something wrong in how I'm trying to use this functionality of
> something in vlan_init.c would need to be modified to create only one
> set of bridge devices and make sure the one configured in hostapd.vlan
> is set up.

Let me give it a try.


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