[Click] packet annotations not set

[Mustafa Arslan]

Hi all,

I have a problem setting the user annotations of a packet. Specifically, I
am using the DSR implementation
in the grid directory. I set the packet annotations at the sender however I
am not able to read them properly
at the receiver because annotation bytes are not set (all zeros). It would
be wonderful if someone could give
a pointer. Thanks.

This is what I use at the sender:

            WritablePacket *tunPacket = Packet::make(p_in->length());
            memcpy(tunPacket->data(), p_in->data(), p_in->length());
            IPAddress anno = IPAddress(DSR_LAST_HOP_IP_ANNO(p_in));
            SET_DSR_LAST_HOP_IP_ANNO(tunPacket, anno.addr());
            click_chatter("sent packet annotation: %s",
anno.unparse().c_str());
            click_chatter("I am sending length %i data",
tunPacket->length());
            output(3).push(tunPacket);

This is how I read at the receiver:

            IPAddress anno = IPAddress(DSR_LAST_HOP_IP_ANNO(p_in));
            click_chatter("received packet annotation: %s",
anno.unparse().c_str());


I support this with Print statements at the configurations like the
following:

sender configuration:

dsr_rt[3] -> Print(baban, CONTENTS true, PRINTANNO true, NBYTES 200) ->
EtherEncap(0x0800, 00:00:24:cb:01:0c, 00:00:24:cb:00:d4) -> SimpleQueue(10)
-> ToDevice(eth0);

receiver configuration:

in2 :: FromDevice(eth0) -> eth_cl :: Classifier(12/0800, -)[0] ->
Strip(14)-> MarkIPHeader -> IPClassifier(ip proto 200) -> Print(anan,
CONTENTS true, PRINTANNO true, NBYTES 200)

and finally this is the output I get :(

sent packet annotation: 192.168.2.20
baban:   32 | 00000000c0a8021400000000000000000000000000000000 | 45000020
881c0000 ffc8703d c0a80214 ffffffff 00000008 0206881c c0a80218
anan:   46 | 000000000000000000000000000000000000000000000000 | 45000020
881c0000 ffc8703d c0a80214 ffffffff 00000008 0206881c c0a80218 00000000
00000000 00000000 0000
received packet annotation: 0.0.0.0