Commit ffb515c9 authored by Eduard Zingerman's avatar Eduard Zingerman Committed by Alexei Starovoitov
Browse files

selftests/bpf: verifier/xdp.c converted to inline assembly 



Test verifier/xdp.c automatically converted to use inline assembly.

Signed-off-by: default avatarEduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20230325025524.144043-43-eddyz87@gmail.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent a8036aea

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

+2 −0
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ 
#include "verifier_value_or_null.skel.h"

#include "verifier_var_off.skel.h"

#include "verifier_xadd.skel.h"

#include "verifier_xdp.skel.h"



__maybe_unused

static void run_tests_aux(const char *skel_name, skel_elf_bytes_fn elf_bytes_factory)
@@ -100,3 +101,4 @@ void test_verifier_value(void) { RUN(verifier_value); } 
void test_verifier_value_or_null(void)        { RUN(verifier_value_or_null); }

void test_verifier_var_off(void)              { RUN(verifier_var_off); }

void test_verifier_xadd(void)                 { RUN(verifier_xadd); }

void test_verifier_xdp(void)                  { RUN(verifier_xdp); }

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

0 → 100644
+24 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

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



#include <linux/bpf.h>

#include <bpf/bpf_helpers.h>

#include "bpf_misc.h"



SEC("xdp")

__description("XDP, using ifindex from netdev")

__success __retval(1)

__naked void xdp_using_ifindex_from_netdev(void)

{

	asm volatile ("					\

	r0 = 0;						\

	r2 = *(u32*)(r1 + %[xdp_md_ingress_ifindex]);	\

	if r2 < 1 goto l0_%=;				\

	r0 = 1;						\

l0_%=:	exit;						\

"	:

	: __imm_const(xdp_md_ingress_ifindex, offsetof(struct xdp_md, ingress_ifindex))

	: __clobber_all);

}



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

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

deleted100644 → 0
+0 −14
Original line number Diff line number Diff line 
{

	"XDP, using ifindex from netdev",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_0, 0),

	BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,

		    offsetof(struct xdp_md, ingress_ifindex)),

	BPF_JMP_IMM(BPF_JLT, BPF_REG_2, 1, 1),

	BPF_MOV64_IMM(BPF_REG_0, 1),

	BPF_EXIT_INSN(),

	},

	.result = ACCEPT,

	.prog_type = BPF_PROG_TYPE_XDP,

	.retval = 1,

},