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189c83bdde
Currently the recursion test is hooking __htab_map_lookup_elem function, which is invoked both from bpf_prog and bpf syscall. But in our kernel build, the __htab_map_lookup_elem gets inlined within the htab_map_lookup_elem, so it's not trigered and the test fails. Fixing this by using htab_map_delete_elem, which is not inlined for bpf_prog calls (like htab_map_lookup_elem is) and is used directly as pointer for map_delete_elem, so it won't disappear by inlining. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Link: https://lore.kernel.org/bpf/YVnfFTL/3T6jOwHI@krava
41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2021 Facebook */
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#include <test_progs.h>
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#include "recursion.skel.h"
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void test_recursion(void)
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{
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struct bpf_prog_info prog_info = {};
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__u32 prog_info_len = sizeof(prog_info);
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struct recursion *skel;
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int key = 0;
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int err;
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skel = recursion__open_and_load();
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if (!ASSERT_OK_PTR(skel, "skel_open_and_load"))
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return;
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err = recursion__attach(skel);
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if (!ASSERT_OK(err, "skel_attach"))
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goto out;
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ASSERT_EQ(skel->bss->pass1, 0, "pass1 == 0");
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bpf_map_delete_elem(bpf_map__fd(skel->maps.hash1), &key);
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ASSERT_EQ(skel->bss->pass1, 1, "pass1 == 1");
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bpf_map_delete_elem(bpf_map__fd(skel->maps.hash1), &key);
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ASSERT_EQ(skel->bss->pass1, 2, "pass1 == 2");
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ASSERT_EQ(skel->bss->pass2, 0, "pass2 == 0");
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bpf_map_delete_elem(bpf_map__fd(skel->maps.hash2), &key);
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ASSERT_EQ(skel->bss->pass2, 1, "pass2 == 1");
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bpf_map_delete_elem(bpf_map__fd(skel->maps.hash2), &key);
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ASSERT_EQ(skel->bss->pass2, 2, "pass2 == 2");
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err = bpf_obj_get_info_by_fd(bpf_program__fd(skel->progs.on_delete),
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&prog_info, &prog_info_len);
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if (!ASSERT_OK(err, "get_prog_info"))
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goto out;
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ASSERT_EQ(prog_info.recursion_misses, 2, "recursion_misses");
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out:
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recursion__destroy(skel);
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}
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