afef88e655
BPF object files are, in a way, the final artifact produced as part of the ahead-of-time compilation process. That makes them somewhat special compared to "regular" object files, which are a intermediate build artifacts that can typically be removed safely. As such, it can make sense to name them differently to make it easier to spot this difference at a glance. Among others, libbpf-bootstrap [0] has established the extension .bpf.o for BPF object files. It seems reasonable to follow this example and establish the same denomination for selftest build artifacts. To that end, this change adjusts the corresponding part of the build system and the test programs loading BPF object files to work with .bpf.o files. [0] https://github.com/libbpf/libbpf-bootstrap Suggested-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Daniel Müller <deso@posteo.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20220901222253.1199242-1-deso@posteo.net
63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include "test_progs.h"
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#include "network_helpers.h"
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static __u32 duration;
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static void test_global_func_args0(struct bpf_object *obj)
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{
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int err, i, map_fd, actual_value;
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const char *map_name = "values";
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map_fd = bpf_find_map(__func__, obj, map_name);
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if (CHECK(map_fd < 0, "bpf_find_map", "cannot find BPF map %s: %s\n",
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map_name, strerror(errno)))
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return;
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struct {
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const char *descr;
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int expected_value;
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} tests[] = {
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{"passing NULL pointer", 0},
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{"returning value", 1},
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{"reading local variable", 100 },
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{"writing local variable", 101 },
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{"reading global variable", 42 },
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{"writing global variable", 43 },
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{"writing to pointer-to-pointer", 1 },
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};
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for (i = 0; i < ARRAY_SIZE(tests); ++i) {
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const int expected_value = tests[i].expected_value;
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err = bpf_map_lookup_elem(map_fd, &i, &actual_value);
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CHECK(err || actual_value != expected_value, tests[i].descr,
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"err %d result %d expected %d\n", err, actual_value, expected_value);
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}
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}
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void test_global_func_args(void)
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{
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const char *file = "./test_global_func_args.bpf.o";
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struct bpf_object *obj;
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int err, prog_fd;
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LIBBPF_OPTS(bpf_test_run_opts, topts,
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.data_in = &pkt_v4,
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.data_size_in = sizeof(pkt_v4),
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.repeat = 1,
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);
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err = bpf_prog_test_load(file, BPF_PROG_TYPE_CGROUP_SKB, &obj, &prog_fd);
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if (CHECK(err, "load program", "error %d loading %s\n", err, file))
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return;
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err = bpf_prog_test_run_opts(prog_fd, &topts);
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ASSERT_OK(err, "test_run");
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ASSERT_OK(topts.retval, "test_run retval");
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test_global_func_args0(obj);
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bpf_object__close(obj);
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}
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