Re: [B.A.T.M.A.N.] [PATCH 1/7] cfg80211: export expected throughput through get_station()

Antonio Quartulli
2014-05-14T21:27:54Z

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On 25/04/14 17:44, Johannes Berg wrote:
> On Mon, 2014-04-14 at 16:03 +0200, Antonio Quartulli wrote:
>> From: Antonio Quartulli <antonio@open-mesh.com>
>>
>> Users may need information about the expected throughput
>
> I think this "expected throughput" should be a bit clarified.
>
> Are you talking about "expected PHY rate" or rather "expected (payload)
> throughput"?

It is not payload throughput because in this "number" we also consider
the bytes being part of the 802.11 Header. Maybe we can call it
"expected MAC throughput" ?

>
>> towards a given peer computed by the RC algorithm.
>> Export such value in Mbps/100 through the get_station() API.
>
> "units of 10Kbps" might be a better description :-)
>
>> This unit has been chosen because it is the same of the
>> throughput returned by MinstrelHT.
>
> Since it's unlikely we'll ever reach the limit of a u32, maybe just
> multiply by 10 to get the nicer Kbps?

At least we are safe in the near future :) Ok, I can change it to Kbps
because it seems that a lot of people will be happier :)

>
>> + * @expected_throughput: expected throughput in Mbps/100 reported by the RC
>> + * algorithm towards this station. The unit of this value has been chosen
>> + * because it is the same of the throughput returned by MinstrelHT
>
> I think the rationale shouldn't be here now.
>

I think I will just remove the last sentence.

Thanks a lot!

--
Antonio Quartulli

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