write handler and global symbol table

[powell molleti]

Hi all,

 how does a write_handler work.

 When one adds a write_handler a proc entry comes up.
 so one has to echo something to that entry.

 ok that entry comes up as thunk? the string?

 when i do

 echo "1" > /proc/click/myelement/mywritehandler

 i get the (int)thunk as zero.
 and (char *)thunk as NULL?

 could someone please through some light on
 write_handlers , no documentation in the doc
 for this method :(.

 And when click module is insmoded can the
 entry in the global symbol entry be use by
 any part of the kernel? to call that function.

 like can i call run_schedule method of
 a element from the kernel?. sorry this may
 sound stupid or strange but i just had a thought
 if one can accomplish this.

 Thanks
 cya
 Powell

 

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