I am using contiki 3.0 and I want to calculate rank of a RPL node based on total number of neighbor node that node have. But, I don't know from where I could get it. I have tried the uip_ds6_nbr_num() method of /net/ipv6/uip-ds6-nbr.c but it displays the neighbor node one by one not the total number of them.
I think that if you include a variable that counts the number of neighbors since you can display them.
You can set up a function to broadcast "Hello" mesaage by each of the nodes of the DODAG with the provision of ACK upon receiving. By the number of ACKs respective node receive you can set up the rank. And also this needs to be updated in each of the source files you are working ( like mrhof.c if you are working with it). I hope this helps.
Counting the number of acknowledgments on the receipt of each message can be a way to track the number of neighbors for each node.
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