/* Copyright (c) 2016 PLUMgrid * * This program is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. */ #include #include #include #include #include #include #include #include #include "bpf_load.h" #include "bpf_util.h" #include "libbpf.h" static int ifindex; static void int_exit(int sig) { set_link_xdp_fd(ifindex, -1); exit(0); } /* simple per-protocol drop counter */ static void poll_stats(int interval) { unsigned int nr_cpus = bpf_num_possible_cpus(); const unsigned int nr_keys = 256; __u64 values[nr_cpus], prev[nr_keys][nr_cpus]; __u32 key; int i; memset(prev, 0, sizeof(prev)); while (1) { sleep(interval); for (key = 0; key < nr_keys; key++) { __u64 sum = 0; assert(bpf_map_lookup_elem(map_fd[0], &key, values) == 0); for (i = 0; i < nr_cpus; i++) sum += (values[i] - prev[key][i]); if (sum) printf("proto %u: %10llu pkt/s\n", key, sum / interval); memcpy(prev[key], values, sizeof(values)); } } } int main(int ac, char **argv) { char filename[256]; snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); if (ac != 2) { printf("usage: %s IFINDEX\n", argv[0]); return 1; } ifindex = strtoul(argv[1], NULL, 0); if (load_bpf_file(filename)) { printf("%s", bpf_log_buf); return 1; } if (!prog_fd[0]) { printf("load_bpf_file: %s\n", strerror(errno)); return 1; } signal(SIGINT, int_exit); if (set_link_xdp_fd(ifindex, prog_fd[0]) < 0) { printf("link set xdp fd failed\n"); return 1; } poll_stats(2); return 0; } /net-next.git/log/net/ipv4/fib_semantics.c?h=nds-private-remove'>logtree commit diff

path: root/net/ipv4/fib_semantics.c

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