[Click] help：about global variables

[Eddie Kohler]

Most of Click implements global tables as "information" elements, which are 
elements with no inputs or outputs.  Some examples include AlignmentInfo, 
ScheduleInfo, and so forth.  You can pass the name of an information element 
as a configuration argument ot your other elements, so they can access its 
methods directly.

Eddie


科进 舒 wrote:
> hi，
>           As click is constructed with elements and then my questions how does click handle global things?
>           For example,I am trying to keep a table,which is used to record every IP's information,like how many times it appears,which ports it connects and so on.but as I can just do something in an element,I don't know how to keep a record of many packets?
>           waiting for your help,thank you!
>    
>                                                                                            Yours sincerely,
>                                                                                                            Aron
> 
> 
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