994ff2f797
Enable inline bpf_kptr_xchg() test for RV64, and the test have passed as show below: Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Pu Lehui <pulehui@huawei.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Björn Töpel <bjorn@kernel.org> Link: https://lore.kernel.org/bpf/20240130124659.670321-3-pulehui@huaweicloud.com
52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (C) 2023. Huawei Technologies Co., Ltd */
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#include <test_progs.h>
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#include "linux/filter.h"
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#include "kptr_xchg_inline.skel.h"
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void test_kptr_xchg_inline(void)
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{
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struct kptr_xchg_inline *skel;
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struct bpf_insn *insn = NULL;
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struct bpf_insn exp;
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unsigned int cnt;
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int err;
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#if !(defined(__x86_64__) || defined(__aarch64__) || \
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(defined(__riscv) && __riscv_xlen == 64))
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test__skip();
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return;
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#endif
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skel = kptr_xchg_inline__open_and_load();
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if (!ASSERT_OK_PTR(skel, "open_load"))
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return;
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err = get_xlated_program(bpf_program__fd(skel->progs.kptr_xchg_inline), &insn, &cnt);
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if (!ASSERT_OK(err, "prog insn"))
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goto out;
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/* The original instructions are:
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* r1 = map[id:xxx][0]+0
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* r2 = 0
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* call bpf_kptr_xchg#yyy
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*
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* call bpf_kptr_xchg#yyy will be inlined as:
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* r0 = r2
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* r0 = atomic64_xchg((u64 *)(r1 +0), r0)
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*/
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if (!ASSERT_GT(cnt, 5, "insn cnt"))
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goto out;
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exp = BPF_MOV64_REG(BPF_REG_0, BPF_REG_2);
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if (!ASSERT_OK(memcmp(&insn[3], &exp, sizeof(exp)), "mov"))
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goto out;
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exp = BPF_ATOMIC_OP(BPF_DW, BPF_XCHG, BPF_REG_1, BPF_REG_0, 0);
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if (!ASSERT_OK(memcmp(&insn[4], &exp, sizeof(exp)), "xchg"))
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goto out;
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out:
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free(insn);
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kptr_xchg_inline__destroy(skel);
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}
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