On Tue, 2016-05-24 at 12:51 -0400, Tony Espy wrote: > We have a new requirement to add a data activity indicator to Ubuntu > Touch for certification in certain markets. > > We've had some internal debate about whether or not we should extend > NetworkManager to provide this information to the rest of the system > vs. > adding logic directly to our touch-specific network indicator.
Hi Tony, IMO it would be interested in having this in NetworkManager, and I think we would be willing to help with implementation. > The current prototype is based on a similar facility in Connman, and > involves RTM_GETLINK polling to retrieve device-specific Rx and Tx > statistics. Do you have a prototype available somewhere? > > Connman's API can be seen here: > > https://git.kernel.org/cgit/network/connman/connman.git/tree/doc/coun > ter-api.txt > https://git.kernel.org/cgit/network/connman/connman.git/tree/doc/mana > ger-api.txt#n90 > > Our proposed implementation involves extending > NMPlatform/NMLinuxPlatform and adding some new properties to the > NetworkManager.Device interface: > > * TxBytes, TxPackets, [calculated TxRate (byte/s)] and Rx equivalents > * EnableStatProps : boolean property to enable/disable device > statistics > * StatPropsRefreshRateMs : refresh rate for Tx/Rx properties in > milliseconds > > An alternative to extending the Device interface would be adding a > dedicated Device.Statistics interface; and perhaps a Device > interface > method ( vs. the EnableStatProps property ) to control > enabling/disabling collection of statistics on a per-device basis. > > The idea behind EnableStatProps is to avoid overloading the system > with > PropertiesChanged signals. The Tx/Rx properties will not refresh if > EnableStatProps is false, and will refresh, sending > PropertiesChanged > signals with the rate specified in StatPropsRefreshRateMs, when true. > In our case, we'd explicitly disable statistics when the screen on a > device is turned off. Maybe EnableStatProps could be dropped, and is implicit by setting StatPropsRefreshRateMs to zero. Thomas
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