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54 lines
1.1 KiB
54 lines
1.1 KiB
// SPDX-License-Identifier: GPL-2.0 |
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#include <stdio.h> |
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#include <assert.h> |
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#include <linux/bpf.h> |
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#include <bpf/bpf.h> |
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#include <bpf/libbpf.h> |
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#include "sock_example.h" |
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#include <unistd.h> |
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#include <arpa/inet.h> |
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int main(int ac, char **argv) |
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{ |
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struct bpf_object *obj; |
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int map_fd, prog_fd; |
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char filename[256]; |
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int i, sock; |
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FILE *f; |
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snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); |
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if (bpf_prog_load(filename, BPF_PROG_TYPE_SOCKET_FILTER, |
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&obj, &prog_fd)) |
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return 1; |
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map_fd = bpf_object__find_map_fd_by_name(obj, "my_map"); |
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sock = open_raw_sock("lo"); |
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assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &prog_fd, |
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sizeof(prog_fd)) == 0); |
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f = popen("ping -4 -c5 localhost", "r"); |
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(void) f; |
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for (i = 0; i < 5; i++) { |
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long long tcp_cnt, udp_cnt, icmp_cnt; |
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int key; |
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key = IPPROTO_TCP; |
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assert(bpf_map_lookup_elem(map_fd, &key, &tcp_cnt) == 0); |
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key = IPPROTO_UDP; |
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assert(bpf_map_lookup_elem(map_fd, &key, &udp_cnt) == 0); |
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key = IPPROTO_ICMP; |
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assert(bpf_map_lookup_elem(map_fd, &key, &icmp_cnt) == 0); |
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printf("TCP %lld UDP %lld ICMP %lld bytes\n", |
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tcp_cnt, udp_cnt, icmp_cnt); |
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sleep(1); |
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} |
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return 0; |
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}
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