[dpdk-dev] Question about worker assignment in load balancer implementaion in DPDK library example.

[dpdk-dev] Question about worker assignment in load balancer implementaion in DPDK library example.

[최익성]

Dear DPDK experts.
 
I have a question about load balancer implementaion in DPDK library example.
(dpdk-2.0.0/examples/load_balancer)
 
I read from load balancer application user guide that The worker lcore to handle the current packet is determined by reading a predefined 1 byte field from the input packet.
 
worker_id = packet[load_balancing_field(pos_lb)] % n_workers .
 
However I found its implementaion of the above function in the source code.
 
worker_0 = data_0_0[pos_lb] & (n_workers - 1);
worker_1 = data_0_1[pos_lb] & (n_workers - 1);
 
Does this implementation works?
 
If the n_workers = 3, the worker_0 and worker_1 have only values of 0 or 2.
 
I will appreciate if I can be given any advice or information.
 
Thank you very much.
 
Sincerely Yours,
 
Ick-Sung Choi.