Thank you Alex for you replay.
On Tue, Jul 4, 2017 at 6:36 AM, Alexander Aring <alex.aring@xxxxxxxxx> wrote:
>
> Hi,
>
> cc mailinglist because somehow it was dropped...
>
> could be also interested for other people.
sorry, i forget to do cc mailinglist.
> On Sat, Jul 01, 2017 at 04:43:32PM +0200, Alexander Aring wrote:
>> Hi,
>>
>> On Fri, Jun 30, 2017 at 10:46:25AM +0530, JANARDHANACHARI KELLA wrote:
>> > Hi Alex,
>> >
>> > I found a structure link_status in cotiki/core/net/link status.c
>> >
>> > /* All statistics of a given link */
>> > struct link_stats {
>> > uint16_t etx; /* ETX using ETX_DIVISOR as fixed point divisor */
>> > int16_t rssi; /* RSSI (received signal strength) */
>> > uint8_t freshness; /* Freshness of the statistics */
>> > clock_time_t last_tx_time; /* Last Tx timestamp */
>> > };
>> >
>> > are we have, any kind of structures/functions to obtain
>> > etx,rssi,freshness,last_tx_time?
>> >
>>
>> As per peer/link/neighbor information? No not yet. But such idea is on
>> the List [0]. Such information makes for me sense only if you know the
>> peer according to the statistics. If you don't need that, you could
>> maybe readout regmap registers on at86rf2xx/mrf24j40.
>>
>> For my final exam I "hacked" it into the kernel [1]. What I needed was
>> per link info for LQI/ACK (TX_SUCCESS)/NO_ACK.
>>
>> It's actually a hack because... I was not sure about several things
>> (which I don't remember anymore). Thesis made me lazy and it was stupid
>> to hack everything because deadline...
>>
>> Nevertheless, the _architecture_ idea is to handle it like "wireless
>> (802.11) e.g. station dump" (I am sure 802.11 mesh functionality has
>> also such stuff for per peer statistics).
>>
>> I would suggest you to look into wireless subsystem and maybe [1] if you
>> want to add support for it. For HardMAC drivers... let us figure the
>> HardMAC API out when I ever see _real_ support for HardMAC or I get such
>> HardMAC transceiver (I don't own an HardMAC transceiver).
>>
>> - Alex
>>
>> [0] https://github.com/linux-wpan/wpan-tools/issues/6
>> [1] https://github.com/linux-wpan/linux-wpan-next/blob/for-mcr/net/mac802154/node_info.c
--
Thanks & Regards
Janardhanachari Kella
Embedded Development Engineer,
E-mail: eni.chari@xxxxxxxxx
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