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selftests/bpf: Merge test_stub.c into testing_helpers.c

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Move testing prog and object load wrappers (bpf_prog_test_load and
bpf_test_load_program) into testing_helpers.{c,h} and get rid of
otherwise useless test_stub.c. Make testing_helpers.c available to
non-test_progs binaries as well.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/bpf/20211103220845.2676888-11-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko 2021-11-03 15:08:43 -07:00 committed by Alexei Starovoitov
parent d8e86407e5
commit f87c1930ac
4 changed files with 77 additions and 59 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

31
tools/testing/selftests/bpf/Makefile
View file

@ -178,10 +178,6 @@ $(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(wildcard bpf_testmod/Makefile bpf_tes
$(Q)$(MAKE) $(submake_extras) -C bpf_testmod
$(Q)cp bpf_testmod/bpf_testmod.ko $@
$(OUTPUT)/test_stub.o: test_stub.c $(BPFOBJ)
$(call msg,CC,,$@)
$(Q)$(CC) -c $(CFLAGS) -o $@ $<
DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool
$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT)
@ -194,18 +190,23 @@ $(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT)
TEST_GEN_PROGS_EXTENDED += $(DEFAULT_BPFTOOL)
$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(BPFOBJ)
$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ)
$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
$(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c
$(OUTPUT)/test_sock: cgroup_helpers.c
$(OUTPUT)/test_sock_addr: cgroup_helpers.c
$(OUTPUT)/test_sockmap: cgroup_helpers.c
$(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c
$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
$(OUTPUT)/test_sock_fields: cgroup_helpers.c
$(OUTPUT)/test_sysctl: cgroup_helpers.c
$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c testing_helpers.o
$(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c testing_helpers.o
$(OUTPUT)/test_sock: cgroup_helpers.c testing_helpers.o
$(OUTPUT)/test_sock_addr: cgroup_helpers.c testing_helpers.o
$(OUTPUT)/test_sockmap: cgroup_helpers.c testing_helpers.o
$(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c testing_helpers.o
$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c testing_helpers.o
$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c testing_helpers.o
$(OUTPUT)/test_sock_fields: cgroup_helpers.c testing_helpers.o
$(OUTPUT)/test_sysctl: cgroup_helpers.c testing_helpers.o
$(OUTPUT)/test_tag: testing_helpers.o
$(OUTPUT)/test_lirc_mode2_user: testing_helpers.o
$(OUTPUT)/xdping: testing_helpers.o
$(OUTPUT)/flow_dissector_load: testing_helpers.o
$(OUTPUT)/test_maps: testing_helpers.o
BPFTOOL ?= $(DEFAULT_BPFTOOL)
$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \

44
tools/testing/selftests/bpf/test_stub.c
View file

@ -1,44 +0,0 @@
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/* Copyright (C) 2019 Netronome Systems, Inc. */
#include <bpf/bpf.h>
#include <bpf/libbpf.h>
#include <string.h>
int extra_prog_load_log_flags = 0;
int bpf_prog_test_load(const char *file, enum bpf_prog_type type,
struct bpf_object **pobj, int *prog_fd)
{
struct bpf_prog_load_attr attr;
memset(&attr, 0, sizeof(struct bpf_prog_load_attr));
attr.file = file;
attr.prog_type = type;
attr.expected_attach_type = 0;
attr.prog_flags = BPF_F_TEST_RND_HI32;
attr.log_level = extra_prog_load_log_flags;
return bpf_prog_load_xattr(&attr, pobj, prog_fd);
}
int bpf_test_load_program(enum bpf_prog_type type, const struct bpf_insn *insns,
size_t insns_cnt, const char *license,
__u32 kern_version, char *log_buf,
size_t log_buf_sz)
{
struct bpf_load_program_attr load_attr;
memset(&load_attr, 0, sizeof(struct bpf_load_program_attr));
load_attr.prog_type = type;
load_attr.expected_attach_type = 0;
load_attr.name = NULL;
load_attr.insns = insns;
load_attr.insns_cnt = insns_cnt;
load_attr.license = license;
load_attr.kern_version = kern_version;
load_attr.prog_flags = BPF_F_TEST_RND_HI32;
load_attr.log_level = extra_prog_load_log_flags;
return bpf_load_program_xattr(&load_attr, log_buf, log_buf_sz);
}

55
tools/testing/selftests/bpf/testing_helpers.c
View file

@ -1,7 +1,11 @@
// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
/* Copyright (C) 2019 Netronome Systems, Inc. */
/* Copyright (C) 2020 Facebook, Inc. */
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <bpf/bpf.h>
#include <bpf/libbpf.h>
#include "testing_helpers.h"
int parse_num_list(const char *s, bool **num_set, int *num_set_len)
@ -78,3 +82,54 @@ __u32 link_info_prog_id(const struct bpf_link *link, struct bpf_link_info *info)
}
return info->prog_id;
}
int extra_prog_load_log_flags = 0;
int bpf_prog_test_load(const char *file, enum bpf_prog_type type,
struct bpf_object **pobj, int *prog_fd)
{
struct bpf_object *obj;
struct bpf_program *prog;
int err;
obj = bpf_object__open(file);
if (!obj)
return -errno;
prog = bpf_object__next_program(obj, NULL);
if (!prog) {
err = -ENOENT;
goto err_out;
}
if (type != BPF_PROG_TYPE_UNSPEC)
bpf_program__set_type(prog, type);
err = bpf_object__load(obj);
if (err)
goto err_out;
*pobj = obj;
*prog_fd = bpf_program__fd(prog);
return 0;
err_out:
bpf_object__close(obj);
return err;
}
int bpf_test_load_program(enum bpf_prog_type type, const struct bpf_insn *insns,
size_t insns_cnt, const char *license,
__u32 kern_version, char *log_buf,
size_t log_buf_sz)
{
LIBBPF_OPTS(bpf_prog_load_opts, opts,
.kern_version = kern_version,
.prog_flags = BPF_F_TEST_RND_HI32,
.log_level = extra_prog_load_log_flags,
.log_buf = log_buf,
.log_size = log_buf_sz,
);
return bpf_prog_load(type, NULL, license, insns, insns_cnt, &opts);
}

6
tools/testing/selftests/bpf/testing_helpers.h
View file

@ -6,3 +6,9 @@
int parse_num_list(const char *s, bool **set, int *set_len);
__u32 link_info_prog_id(const struct bpf_link *link, struct bpf_link_info *info);
int bpf_prog_test_load(const char *file, enum bpf_prog_type type,
struct bpf_object **pobj, int *prog_fd);
int bpf_test_load_program(enum bpf_prog_type type, const struct bpf_insn *insns,
size_t insns_cnt, const char *license,
__u32 kern_version, char *log_buf,
size_t log_buf_sz);