Edit File: netfilter_summary.stp
#!/usr/bin/stap global packets probe begin { print ("Collecting data... Type Ctrl-C to exit and display results.") } probe netfilter.ipv4.pre_routing { // Using aggregates avoids contention from packets being sent in // parallel from different processors: packets[saddr, daddr] <<< length } probe end { print ("\n") foreach ([saddr, daddr] in packets-) { printf ("%15s --> %15s : %d packets, %d total bytes\n", saddr, daddr, @count(packets[saddr,daddr]), @sum(packets[saddr,daddr])) } }