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55 lines
1.2 KiB
55 lines
1.2 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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#include <sys/resource.h> |
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struct pair { |
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__u64 packets; |
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__u64 bytes; |
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}; |
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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, "hash_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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int key = 0, next_key; |
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struct pair value; |
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while (bpf_map_get_next_key(map_fd, &key, &next_key) == 0) { |
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bpf_map_lookup_elem(map_fd, &next_key, &value); |
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printf("ip %s bytes %lld packets %lld\n", |
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inet_ntoa((struct in_addr){htonl(next_key)}), |
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value.bytes, value.packets); |
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key = next_key; |
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} |
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sleep(1); |
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} |
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return 0; |
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}
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