bpf/progs/netcnt_prog.c

28 	union percpu_net_cnt *percpu_cnt;
34 	percpu_cnt = bpf_get_local_storage(&percpu_netcnt, 0);
36 	percpu_cnt->packets++;
37 	percpu_cnt->bytes += skb->len;
39 	if (percpu_cnt->packets > MAX_PERCPU_PACKETS) {
41 				     percpu_cnt->packets);
42 		percpu_cnt->packets = 0;
45 				     percpu_cnt->bytes);
46 		percpu_cnt->bytes = 0;
50 	dt = ts - percpu_cnt->prev_ts;
55 	if (cnt->bytes + percpu_cnt->bytes - percpu_cnt->prev_bytes < dt)
61 		percpu_cnt->prev_ts = ts;
62 		percpu_cnt->prev_packets = cnt->packets;
63 		percpu_cnt->prev_bytes = cnt->bytes;