forked from Minki/linux
2bf3e2ef42
There are two files in the tree called libbpf.h which is becoming problematic. Most samples don't actually need the local libbpf.h they simply include it to get to bpf/bpf.h. Include bpf/bpf.h directly instead. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
134 lines
3.2 KiB
C
134 lines
3.2 KiB
C
/*
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* Copyright (c) 2017 Facebook
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*/
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#include <sys/resource.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <stdint.h>
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#include <assert.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <bpf/bpf.h>
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#include "bpf_load.h"
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#define PORT_A (map_fd[0])
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#define PORT_H (map_fd[1])
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#define REG_RESULT_H (map_fd[2])
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#define INLINE_RESULT_H (map_fd[3])
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#define A_OF_PORT_A (map_fd[4]) /* Test case #0 */
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#define H_OF_PORT_A (map_fd[5]) /* Test case #1 */
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#define H_OF_PORT_H (map_fd[6]) /* Test case #2 */
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static const char * const test_names[] = {
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"Array of Array",
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"Hash of Array",
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"Hash of Hash",
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};
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#define NR_TESTS (sizeof(test_names) / sizeof(*test_names))
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static void check_map_id(int inner_map_fd, int map_in_map_fd, uint32_t key)
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{
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struct bpf_map_info info = {};
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uint32_t info_len = sizeof(info);
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int ret, id;
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ret = bpf_obj_get_info_by_fd(inner_map_fd, &info, &info_len);
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assert(!ret);
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ret = bpf_map_lookup_elem(map_in_map_fd, &key, &id);
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assert(!ret);
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assert(id == info.id);
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}
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static void populate_map(uint32_t port_key, int magic_result)
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{
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int ret;
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ret = bpf_map_update_elem(PORT_A, &port_key, &magic_result, BPF_ANY);
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assert(!ret);
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ret = bpf_map_update_elem(PORT_H, &port_key, &magic_result,
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BPF_NOEXIST);
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assert(!ret);
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ret = bpf_map_update_elem(A_OF_PORT_A, &port_key, &PORT_A, BPF_ANY);
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assert(!ret);
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check_map_id(PORT_A, A_OF_PORT_A, port_key);
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ret = bpf_map_update_elem(H_OF_PORT_A, &port_key, &PORT_A, BPF_NOEXIST);
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assert(!ret);
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check_map_id(PORT_A, H_OF_PORT_A, port_key);
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ret = bpf_map_update_elem(H_OF_PORT_H, &port_key, &PORT_H, BPF_NOEXIST);
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assert(!ret);
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check_map_id(PORT_H, H_OF_PORT_H, port_key);
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}
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static void test_map_in_map(void)
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{
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struct sockaddr_in6 in6 = { .sin6_family = AF_INET6 };
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uint32_t result_key = 0, port_key;
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int result, inline_result;
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int magic_result = 0xfaceb00c;
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int ret;
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int i;
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port_key = rand() & 0x00FF;
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populate_map(port_key, magic_result);
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in6.sin6_addr.s6_addr16[0] = 0xdead;
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in6.sin6_addr.s6_addr16[1] = 0xbeef;
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in6.sin6_port = port_key;
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for (i = 0; i < NR_TESTS; i++) {
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printf("%s: ", test_names[i]);
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in6.sin6_addr.s6_addr16[7] = i;
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ret = connect(-1, (struct sockaddr *)&in6, sizeof(in6));
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assert(ret == -1 && errno == EBADF);
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ret = bpf_map_lookup_elem(REG_RESULT_H, &result_key, &result);
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assert(!ret);
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ret = bpf_map_lookup_elem(INLINE_RESULT_H, &result_key,
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&inline_result);
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assert(!ret);
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if (result != magic_result || inline_result != magic_result) {
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printf("Error. result:%d inline_result:%d\n",
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result, inline_result);
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exit(1);
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}
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bpf_map_delete_elem(REG_RESULT_H, &result_key);
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bpf_map_delete_elem(INLINE_RESULT_H, &result_key);
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printf("Pass\n");
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}
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}
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int main(int argc, char **argv)
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{
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struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
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char filename[256];
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assert(!setrlimit(RLIMIT_MEMLOCK, &r));
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snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
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if (load_bpf_file(filename)) {
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printf("%s", bpf_log_buf);
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return 1;
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}
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test_map_in_map();
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return 0;
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}
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