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// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <linux/bpf.h>
#include <sys/types.h>
#include <bpf/bpf.h>
#include <bpf/libbpf.h>
#include "bpf_rlimit.h"
#include "bpf_util.h"
#include "cgroup_helpers.h"
#include "test_tcpbpf.h"
static int bpf_find_map(const char *test, struct bpf_object *obj,
const char *name)
{
struct bpf_map *map;
map = bpf_object__find_map_by_name(obj, name);
if (!map) {
printf("%s:FAIL:map '%s' not found\n", test, name);
return -1;
}
return bpf_map__fd(map);
}
int main(int argc, char **argv)
{
const char *file = "test_tcpbpf_kern.o";
struct tcpbpf_globals g = {0};
const char *cg_path = "/foo";
bool debug_flag = false;
int error = EXIT_FAILURE;
struct bpf_object *obj;
int prog_fd, map_fd;
int cg_fd = -1;
__u32 key = 0;
int rv;
if (argc > 1 && strcmp(argv[1], "-d") == 0)
debug_flag = true;
if (setup_cgroup_environment())
goto err;
cg_fd = create_and_get_cgroup(cg_path);
if (!cg_fd)
goto err;
if (join_cgroup(cg_path))
goto err;
if (bpf_prog_load(file, BPF_PROG_TYPE_SOCK_OPS, &obj, &prog_fd)) {
printf("FAILED: load_bpf_file failed for: %s\n", file);
goto err;
}
rv = bpf_prog_attach(prog_fd, cg_fd, BPF_CGROUP_SOCK_OPS, 0);
if (rv) {
printf("FAILED: bpf_prog_attach: %d (%s)\n",
error, strerror(errno));
goto err;
}
if (system("./tcp_server.py")) {
printf("FAILED: TCP server\n");
goto err;
}
map_fd = bpf_find_map(__func__, obj, "global_map");
if (map_fd < 0)
goto err;
rv = bpf_map_lookup_elem(map_fd, &key, &g);
if (rv != 0) {
printf("FAILED: bpf_map_lookup_elem returns %d\n", rv);
goto err;
}
if (g.bytes_received != 501 || g.bytes_acked != 1002 ||
g.data_segs_in != 1 || g.data_segs_out != 1 ||
(g.event_map ^ 0x47e) != 0 || g.bad_cb_test_rv != 0x80 ||
g.good_cb_test_rv != 0) {
printf("FAILED: Wrong stats\n");
if (debug_flag) {
printf("\n");
printf("bytes_received: %d (expecting 501)\n",
(int)g.bytes_received);
printf("bytes_acked: %d (expecting 1002)\n",
(int)g.bytes_acked);
printf("data_segs_in: %d (expecting 1)\n",
g.data_segs_in);
printf("data_segs_out: %d (expecting 1)\n",
g.data_segs_out);
printf("event_map: 0x%x (at least 0x47e)\n",
g.event_map);
printf("bad_cb_test_rv: 0x%x (expecting 0x80)\n",
g.bad_cb_test_rv);
printf("good_cb_test_rv:0x%x (expecting 0)\n",
g.good_cb_test_rv);
}
goto err;
}
printf("PASSED!\n");
error = 0;
err:
bpf_prog_detach(cg_fd, BPF_CGROUP_SOCK_OPS);
close(cg_fd);
cleanup_cgroup_environment();
return error;
}
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