Commit 37467c79 authored by Eduard Zingerman's avatar Eduard Zingerman Committed by Alexei Starovoitov
Browse files

selftests/bpf: verifier/btf_ctx_access converted to inline assembly 



Test verifier/btf_ctx_access automatically converted to use inline assembly.

Signed-off-by: default avatarEduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20230421174234.2391278-5-eddyz87@gmail.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 965a3f91

tools/testing/selftests/bpf/prog_tests/verifier.c

+2 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 
#include "verifier_bounds_deduction_non_const.skel.h"

#include "verifier_bounds_mix_sign_unsign.skel.h"

#include "verifier_bpf_get_stack.skel.h"

#include "verifier_btf_ctx_access.skel.h"

#include "verifier_cfg.skel.h"

#include "verifier_cgroup_inv_retcode.skel.h"

#include "verifier_cgroup_skb.skel.h"
@@ -89,6 +90,7 @@ void test_verifier_bounds_deduction(void) { RUN(verifier_bounds_deduction); 
void test_verifier_bounds_deduction_non_const(void)     { RUN(verifier_bounds_deduction_non_const); }

void test_verifier_bounds_mix_sign_unsign(void) { RUN(verifier_bounds_mix_sign_unsign); }

void test_verifier_bpf_get_stack(void)        { RUN(verifier_bpf_get_stack); }

void test_verifier_btf_ctx_access(void)       { RUN(verifier_btf_ctx_access); }

void test_verifier_cfg(void)                  { RUN(verifier_cfg); }

void test_verifier_cgroup_inv_retcode(void)   { RUN(verifier_cgroup_inv_retcode); }

void test_verifier_cgroup_skb(void)           { RUN(verifier_cgroup_skb); }

tools/testing/selftests/bpf/progs/verifier_btf_ctx_access.c

0 → 100644
+32 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

/* Converted from tools/testing/selftests/bpf/verifier/btf_ctx_access.c */



#include <linux/bpf.h>

#include <bpf/bpf_helpers.h>

#include "bpf_misc.h"



SEC("fentry/bpf_modify_return_test")

__description("btf_ctx_access accept")

__success __retval(0)

__naked void btf_ctx_access_accept(void)

{

	asm volatile ("					\

	r2 = *(u32*)(r1 + 8);		/* load 2nd argument value (int pointer) */\

	r0 = 0;						\

	exit;						\

"	::: __clobber_all);

}



SEC("fentry/bpf_fentry_test9")

__description("btf_ctx_access u32 pointer accept")

__success __retval(0)

__naked void ctx_access_u32_pointer_accept(void)

{

	asm volatile ("					\

	r2 = *(u32*)(r1 + 0);		/* load 1nd argument value (u32 pointer) */\

	r0 = 0;						\

	exit;						\

"	::: __clobber_all);

}



char _license[] SEC("license") = "GPL";

tools/testing/selftests/bpf/verifier/btf_ctx_access.c

deleted100644 → 0
+0 −25
Original line number Diff line number Diff line 
{

	"btf_ctx_access accept",

	.insns = {

	BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, 8),	/* load 2nd argument value (int pointer) */

	BPF_MOV64_IMM(BPF_REG_0, 0),

	BPF_EXIT_INSN(),

	},

	.result = ACCEPT,

	.prog_type = BPF_PROG_TYPE_TRACING,

	.expected_attach_type = BPF_TRACE_FENTRY,

	.kfunc = "bpf_modify_return_test",

},



{

	"btf_ctx_access u32 pointer accept",

	.insns = {

	BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, 0),	/* load 1nd argument value (u32 pointer) */

	BPF_MOV64_IMM(BPF_REG_0, 0),

	BPF_EXIT_INSN(),

	},

	.result = ACCEPT,

	.prog_type = BPF_PROG_TYPE_TRACING,

	.expected_attach_type = BPF_TRACE_FENTRY,

	.kfunc = "bpf_fentry_test9",

},