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Re: [PATCH] nl80211: Add association id to station response

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On 5/22/2017 8:17 AM, Johannes Berg wrote:
Hi Kirill,

First of all, please read

https://www.kernel.org/doc/html/latest/process/submitting-patches.html

particularly

https://www.kernel.org/doc/html/latest/process/submitting-patches.html#sign-your-work-the-developer-s-certificate-of-origin

is important

On Sun, 2017-05-21 at 11:45 +0300, Kirill Obukhov wrote:
There are unique association id attribute must be passed in station
add request.

This sentence is a bit quirky. It is sort of clear what is meant, but maybe rephrase:

When adding a station user-space using CMD_NEW_STATION user-space needs to provide a unique association ID. However, we have no way...

But we have no way to retrieve ids already in use. To solve issue
association id attribute added to station response.

It would also be nice to give an example when you want to add a new station (maybe it is just me being curious ;-) ).

Regards,
Arend


This sound fine.

However, it'd be good to mention that you're also adding it to
mac80211, or preferably even split the patch into two, one to add the
feature and one to make use of it in mac80211.

Once you do that, you'll quite likely also notice that with just the
first of the patches, the thing is broken and always reports a 0 AID.

         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
+           nla_put_u16(msg, NL80211_ATTR_STA_AID, sinfo->aid) ||

That's because you need to make this conditional on the right filled
flag.

johannes




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