8f9081c925
The existing fexit_bpf2bpf test covers the target progrm with callees. This patch added a test for the target program without callees. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20191205010607.177904-1-yhs@fb.com
113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2019 Facebook */
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#include <test_progs.h>
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static void test_fexit_bpf2bpf_common(const char *obj_file,
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const char *target_obj_file,
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int prog_cnt,
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const char **prog_name)
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{
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struct bpf_object *obj = NULL, *pkt_obj;
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int err, pkt_fd, i;
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struct bpf_link **link = NULL;
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struct bpf_program **prog = NULL;
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__u32 duration, retval;
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struct bpf_map *data_map;
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const int zero = 0;
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u64 *result = NULL;
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err = bpf_prog_load(target_obj_file, BPF_PROG_TYPE_UNSPEC,
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&pkt_obj, &pkt_fd);
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if (CHECK(err, "prog_load sched cls", "err %d errno %d\n", err, errno))
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return;
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DECLARE_LIBBPF_OPTS(bpf_object_open_opts, opts,
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.attach_prog_fd = pkt_fd,
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);
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link = calloc(sizeof(struct bpf_link *), prog_cnt);
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prog = calloc(sizeof(struct bpf_program *), prog_cnt);
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result = malloc(prog_cnt * sizeof(u64));
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if (CHECK(!link || !prog || !result, "alloc_memory",
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"failed to alloc memory"))
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goto close_prog;
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obj = bpf_object__open_file(obj_file, &opts);
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if (CHECK(IS_ERR_OR_NULL(obj), "obj_open",
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"failed to open fexit_bpf2bpf: %ld\n",
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PTR_ERR(obj)))
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goto close_prog;
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err = bpf_object__load(obj);
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if (CHECK(err, "obj_load", "err %d\n", err))
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goto close_prog;
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for (i = 0; i < prog_cnt; i++) {
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prog[i] = bpf_object__find_program_by_title(obj, prog_name[i]);
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if (CHECK(!prog[i], "find_prog", "prog %s not found\n", prog_name[i]))
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goto close_prog;
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link[i] = bpf_program__attach_trace(prog[i]);
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if (CHECK(IS_ERR(link[i]), "attach_trace", "failed to link\n"))
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goto close_prog;
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}
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data_map = bpf_object__find_map_by_name(obj, "fexit_bp.bss");
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if (CHECK(!data_map, "find_data_map", "data map not found\n"))
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goto close_prog;
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err = bpf_prog_test_run(pkt_fd, 1, &pkt_v6, sizeof(pkt_v6),
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NULL, NULL, &retval, &duration);
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CHECK(err || retval, "ipv6",
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"err %d errno %d retval %d duration %d\n",
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err, errno, retval, duration);
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err = bpf_map_lookup_elem(bpf_map__fd(data_map), &zero, result);
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if (CHECK(err, "get_result",
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"failed to get output data: %d\n", err))
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goto close_prog;
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for (i = 0; i < prog_cnt; i++)
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if (CHECK(result[i] != 1, "result", "fexit_bpf2bpf failed err %ld\n",
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result[i]))
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goto close_prog;
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close_prog:
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for (i = 0; i < prog_cnt; i++)
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if (!IS_ERR_OR_NULL(link[i]))
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bpf_link__destroy(link[i]);
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if (!IS_ERR_OR_NULL(obj))
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bpf_object__close(obj);
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bpf_object__close(pkt_obj);
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free(link);
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free(prog);
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free(result);
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}
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static void test_target_no_callees(void)
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{
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const char *prog_name[] = {
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"fexit/test_pkt_md_access",
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};
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test_fexit_bpf2bpf_common("./fexit_bpf2bpf_simple.o",
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"./test_pkt_md_access.o",
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ARRAY_SIZE(prog_name),
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prog_name);
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}
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static void test_target_yes_callees(void)
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{
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const char *prog_name[] = {
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"fexit/test_pkt_access",
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"fexit/test_pkt_access_subprog1",
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"fexit/test_pkt_access_subprog2",
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};
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test_fexit_bpf2bpf_common("./fexit_bpf2bpf.o",
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"./test_pkt_access.o",
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ARRAY_SIZE(prog_name),
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prog_name);
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}
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void test_fexit_bpf2bpf(void)
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{
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test_target_no_callees();
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test_target_yes_callees();
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}
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