510312882c
Add a combined fentry/fexit test. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Song Liu <songliubraving@fb.com> Link: https://lore.kernel.org/bpf/20191114185720.1641606-12-ast@kernel.org
91 lines
3.1 KiB
C
91 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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void test_fentry_fexit(void)
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{
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struct bpf_prog_load_attr attr_fentry = {
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.file = "./fentry_test.o",
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};
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struct bpf_prog_load_attr attr_fexit = {
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.file = "./fexit_test.o",
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};
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struct bpf_object *obj_fentry = NULL, *obj_fexit = NULL, *pkt_obj;
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struct bpf_map *data_map_fentry, *data_map_fexit;
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char fentry_name[] = "fentry/bpf_fentry_testX";
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char fexit_name[] = "fexit/bpf_fentry_testX";
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int err, pkt_fd, kfree_skb_fd, i;
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struct bpf_link *link[12] = {};
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struct bpf_program *prog[12];
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__u32 duration, retval;
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const int zero = 0;
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u64 result[12];
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err = bpf_prog_load("./test_pkt_access.o", BPF_PROG_TYPE_SCHED_CLS,
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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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err = bpf_prog_load_xattr(&attr_fentry, &obj_fentry, &kfree_skb_fd);
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if (CHECK(err, "prog_load fail", "err %d errno %d\n", err, errno))
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goto close_prog;
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err = bpf_prog_load_xattr(&attr_fexit, &obj_fexit, &kfree_skb_fd);
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if (CHECK(err, "prog_load fail", "err %d errno %d\n", err, errno))
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goto close_prog;
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for (i = 0; i < 6; i++) {
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fentry_name[sizeof(fentry_name) - 2] = '1' + i;
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prog[i] = bpf_object__find_program_by_title(obj_fentry, fentry_name);
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if (CHECK(!prog[i], "find_prog", "prog %s not found\n", fentry_name))
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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_fentry = bpf_object__find_map_by_name(obj_fentry, "fentry_t.bss");
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if (CHECK(!data_map_fentry, "find_data_map", "data map not found\n"))
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goto close_prog;
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for (i = 6; i < 12; i++) {
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fexit_name[sizeof(fexit_name) - 2] = '1' + i - 6;
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prog[i] = bpf_object__find_program_by_title(obj_fexit, fexit_name);
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if (CHECK(!prog[i], "find_prog", "prog %s not found\n", fexit_name))
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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_fexit = bpf_object__find_map_by_name(obj_fexit, "fexit_te.bss");
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if (CHECK(!data_map_fexit, "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_fentry), &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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err = bpf_map_lookup_elem(bpf_map__fd(data_map_fexit), &zero, result + 6);
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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 < 12; i++)
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if (CHECK(result[i] != 1, "result", "bpf_fentry_test%d failed err %ld\n",
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i % 6 + 1, result[i]))
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goto close_prog;
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close_prog:
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for (i = 0; i < 12; 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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bpf_object__close(obj_fentry);
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bpf_object__close(obj_fexit);
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bpf_object__close(pkt_obj);
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}
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