[ns] calculating the number of packet in the queue

[Bilel Romdhani]

hi all,

i m simulating wireless scenario and i want to communicate to the mac layer
the number of packet in the queue but  by displaying  this number in ll
layer in file droptail.cc i got "0"!
#################################
 void DropTail::enque(Packet* p)
{
    printf("la taille = %d\n ", q_->len_);
...}
################################
i want also know how can i transmit this information to the mac layer
because i need this information in mac-802_11.cc


can someone help me plz??