087cba799c
Also, avoid using CO-RE features, as lskel doesn't support CO-RE, yet.
Include both light and libbpf skeleton in same file to test both of them
together.
In c48e51c8b0 ("bpf: selftests: Add selftests for module kfunc support"),
I added support for generating both lskel and libbpf skel for a BPF
object, however the name parameter for bpftool caused collisions when
included in same file together. This meant that every test needed a
separate file for a libbpf/light skeleton separation instead of
subtests.
Change that by appending a "_lskel" suffix to the name for files using
light skeleton, and convert all existing users.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211028063501.2239335-7-memxor@gmail.com
57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Test weak ksyms.
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*
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* Copyright (c) 2021 Google
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*/
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#include "vmlinux.h"
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#include <bpf/bpf_helpers.h>
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int out__existing_typed = -1;
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__u64 out__existing_typeless = -1;
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__u64 out__non_existent_typeless = -1;
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__u64 out__non_existent_typed = -1;
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/* existing weak symbols */
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/* test existing weak symbols can be resolved. */
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extern const struct rq runqueues __ksym __weak; /* typed */
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extern const void bpf_prog_active __ksym __weak; /* typeless */
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/* non-existent weak symbols. */
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/* typeless symbols, default to zero. */
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extern const void bpf_link_fops1 __ksym __weak;
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/* typed symbols, default to zero. */
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extern const int bpf_link_fops2 __ksym __weak;
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SEC("raw_tp/sys_enter")
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int pass_handler(const void *ctx)
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{
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struct rq *rq;
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/* tests existing symbols. */
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rq = (struct rq *)bpf_per_cpu_ptr(&runqueues, 0);
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if (rq)
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out__existing_typed = 0;
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out__existing_typeless = (__u64)&bpf_prog_active;
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/* tests non-existent symbols. */
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out__non_existent_typeless = (__u64)&bpf_link_fops1;
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/* tests non-existent symbols. */
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out__non_existent_typed = (__u64)&bpf_link_fops2;
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if (&bpf_link_fops2) /* can't happen */
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out__non_existent_typed = (__u64)bpf_per_cpu_ptr(&bpf_link_fops2, 0);
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return 0;
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}
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char _license[] SEC("license") = "GPL";
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