[Click] Question about push and pull packet processing

[amaxis99 at yahoo.it]

> Massimiliano,
>
> An agnostic element doesn't need to use simple_action().  It can provide
> both push() and pull() methods.  The relevant method will get called, and
> you can see the port that way.  Check out the Suppressor element, which has
> pretty much exactly this high-level spec.
>  elements/standard/suppressor.{cc,hh}
>
> Eddie
>

I have taken a look at the Suppressor code and it's exactly the
example I needed. Thanks a lot

--

Massimiliano



> amaxis99 at yahoo.it wrote:
>>
>> Hi,
>>
>> I have written an element with N inputs and M outputs: actually, it
>> manages packets using push method and I would like to make it
>> agnostic, essentially to check if push/pull processing has some
>> relevant impact on performance. Anyway, this element sends packets on
>> a predefined output in conjunction with the input on which the packet
>> is received: the code is something like
>>
>> void push(int port, Packet* p) {
>>  int k;
>>  <...>
>>  if (port == 0) {
>>    <some stuff>
>>    output(1).push(p);
>>    return;
>>  }
>>  if (port == 1) {
>>    <other stuff>
>>    output(k).push(p);
>>    return;
>>  }
>>  <...>
>>  output(0).push(p);
>> }
>>
>> My question: is it possible to achive the same behavior using an
>> agnostic processing, since the simple_action doesn't include the
>> input/output port number in its arguments?
>>
>> Thanks
>>
>> --
>>
>> Massimiliano
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>