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Commit 47a92ae0 authored by Alexei Starovoitov's avatar Alexei Starovoitov
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Merge branch 'cleanup-selftests-bpf-makefile' 

Andrii Nakryiko says:

====================
This patch set extensively revamps selftests/bpf's Makefile to generalize test
runner concept and apply it uniformly to test_maps and test_progs test
runners, along with test_progs' few build "flavors", exercising various ways
to build BPF programs.

As we do that, we fix dependencies between various phases of test runners, and
simplify some one-off rules and dependencies currently present in Makefile.
test_progs' flavors are now built into root $(OUTPUT) directory and can be run
without any extra steps right from there. E.g., test_progs-alu32 is built and
is supposed to be run from $(OUTPUT). It will cd into alu32/ subdirectory to
load correct set of BPF object files (which are different from the ones built
for test_progs).

Outline:
- patch #1 teaches test_progs about flavor sub-directories;
- patch #2 fixes one of CO-RE tests to not depend strictly on process name;
- patch #3 changes test_maps's usage of map_tests/tests.h to be the same as
  test_progs' one;
- patch #4 adds convenient short `make test_progs`-like targets to build only
  individual tests, if necessary;
- patch #5 is a main patch in the series; it uses a bunch of make magic
  (mainly $(call) and $(eval)) to define test runner "skeleton" and apply it
  to 4 different test runners, lots more details in corresponding commit
  description;
- patch #6 does a bit of post-clean up for test_queue_map and test_stack_map
  BPF programs;
- patch #7 cleans up test_libbpf.sh/test_libbpf_open superseded by test_progs.

v3->v4:
- remove accidentally checked in binaries;

v2->v3:
- drop test_xdp.o mixed compilation mode, remove test_libbpf.sh (Alexei);

v1->v2:
- drop test_progs-native causing compilation failures due to
  __builtin_preserve_field_access, add back test_xdp.o override, which will
  now emit rule re-definition warning.
====================
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parents 8d285a3b cb79a4e1
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Showing with 232 additions and 346 deletions
tools/testing/selftests/bpf/.gitignore
View file @ 47a92ae0
......@@ -7,11 +7,10 @@ FEATURE-DUMP.libbpf
fixdep
test_align
test_dev_cgroup
test_progs
/test_progs*
test_tcpbpf_user
test_verifier_log
feature
test_libbpf_open
test_sock
test_sock_addr
test_sock_fields
......@@ -33,9 +32,10 @@ test_tcpnotify_user
test_libbpf
test_tcp_check_syncookie_user
test_sysctl
alu32
libbpf.pc
libbpf.so.*
test_hashmap
test_btf_dump
xdping
/alu32
/bpf_gcc
tools/testing/selftests/bpf/Makefile
View file @ 47a92ae0
......@@ -2,10 +2,12 @@
include ../../../../scripts/Kbuild.include
include ../../../scripts/Makefile.arch
LIBDIR := ../../../lib
CURDIR := $(abspath .)
LIBDIR := $(abspath ../../../lib)
BPFDIR := $(LIBDIR)/bpf
APIDIR := ../../../include/uapi
GENDIR := ../../../../include/generated
TOOLSDIR := $(abspath ../../../include)
APIDIR := $(TOOLSDIR)/uapi
GENDIR := $(abspath ../../../../include/generated)
GENHDR := $(GENDIR)/autoconf.h
ifneq ($(wildcard $(GENHDR)),)
......@@ -16,8 +18,9 @@ CLANG ?= clang
LLC ?= llc
LLVM_OBJCOPY ?= llvm-objcopy
BPF_GCC ?= $(shell command -v bpf-gcc;)
CFLAGS += -g -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(BPFDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include \
-Dbpf_prog_load=bpf_prog_test_load \
CFLAGS += -g -Wall -O2 $(GENFLAGS) -I$(APIDIR) -I$(LIBDIR) -I$(BPFDIR) \
-I$(GENDIR) -I$(TOOLSDIR) -I$(CURDIR) \
-Dbpf_prog_load=bpf_prog_test_load \
-Dbpf_load_program=bpf_test_load_program
LDLIBS += -lcap -lelf -lrt -lpthread
......@@ -29,12 +32,6 @@ TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test
test_netcnt test_tcpnotify_user test_sock_fields test_sysctl test_hashmap \
test_cgroup_attach xdping
BPF_OBJ_FILES = $(patsubst %.c,%.o, $(notdir $(wildcard progs/*.c)))
TEST_GEN_FILES = $(BPF_OBJ_FILES)
BTF_C_FILES = $(wildcard progs/btf_dump_test_case_*.c)
TEST_FILES = $(BTF_C_FILES)
# Also test sub-register code-gen if LLVM has eBPF v3 processor support which
# contains both ALU32 and JMP32 instructions.
SUBREG_CODEGEN := $(shell echo "int cal(int a) { return a > 0; }" | \
......@@ -42,16 +39,19 @@ SUBREG_CODEGEN := $(shell echo "int cal(int a) { return a > 0; }" | \
$(LLC) -mattr=+alu32 -mcpu=v3 2>&1 | \
grep 'if w')
ifneq ($(SUBREG_CODEGEN),)
TEST_GEN_FILES += $(patsubst %.o,alu32/%.o, $(BPF_OBJ_FILES))
TEST_GEN_PROGS += test_progs-alu32
endif
# Also test bpf-gcc, if present
ifneq ($(BPF_GCC),)
TEST_GEN_FILES += $(patsubst %.o,bpf_gcc/%.o, $(BPF_OBJ_FILES))
TEST_GEN_PROGS += test_progs-bpf_gcc
endif
TEST_GEN_FILES =
TEST_FILES =
# Order correspond to 'make run_tests' order
TEST_PROGS := test_kmod.sh \
test_libbpf.sh \
test_xdp_redirect.sh \
test_xdp_meta.sh \
test_xdp_veth.sh \
......@@ -78,27 +78,30 @@ TEST_PROGS_EXTENDED := with_addr.sh \
test_xdp_vlan.sh
# Compile but not part of 'make run_tests'
TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr test_skb_cgroup_id_user \
TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \
flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
test_lirc_mode2_user
include ../lib.mk
TEST_CUSTOM_PROGS = urandom_read
# NOTE: $(OUTPUT) won't get default value if used before lib.mk
TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read
all: $(TEST_CUSTOM_PROGS)
include ../lib.mk
$(OUTPUT)/urandom_read: $(OUTPUT)/%: %.c
# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
# to build individual tests.
# NOTE: Semicolon at the end is critical to override lib.mk's default static
# rule for binaries.
$(notdir $(TEST_GEN_PROGS) \
$(TEST_PROGS) \
$(TEST_PROGS_EXTENDED) \
$(TEST_GEN_PROGS_EXTENDED) \
$(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ;
$(OUTPUT)/urandom_read: urandom_read.c
$(CC) -o $@ $< -Wl,--build-id
$(OUTPUT)/test_stub.o: test_stub.c
$(CC) $(TEST_PROGS_CFLAGS) $(CFLAGS) -c -o $@ $<
BPFOBJ := $(OUTPUT)/libbpf.a
$(TEST_GEN_PROGS): $(OUTPUT)/test_stub.o $(BPFOBJ)
$(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(OUTPUT)/libbpf.a
$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(BPFOBJ)
$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
$(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c
......@@ -108,7 +111,6 @@ $(OUTPUT)/test_socket_cookie: cgroup_helpers.c
$(OUTPUT)/test_sockmap: cgroup_helpers.c
$(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c
$(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c
$(OUTPUT)/test_progs: cgroup_helpers.c trace_helpers.c
$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
$(OUTPUT)/test_netcnt: cgroup_helpers.c
......@@ -124,6 +126,10 @@ force:
$(BPFOBJ): force
$(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/
BPF_HELPERS := $(BPFDIR)/bpf_helper_defs.h $(wildcard $(BPFDIR)/bpf_*.h)
$(BPFDIR)/bpf_helper_defs.h:
$(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/ bpf_helper_defs.h
# Get Clang's default includes on this system, as opposed to those seen by
# '-target bpf'. This fixes "missing" files on some architectures/distros,
# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
......@@ -134,10 +140,11 @@ define get_sys_includes
$(shell $(1) -v -E - </dev/null 2>&1 \
| sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }')
endef
CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) \
-I. -I./include/uapi -I../../../include/uapi \
-I$(BPFDIR) -I$(OUTPUT)/../usr/include
-I. -I./include/uapi -I$(APIDIR) \
-I$(BPFDIR) -I$(abspath $(OUTPUT)/../usr/include)
CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
-Wno-compare-distinct-pointer-types
......@@ -145,137 +152,171 @@ CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline
$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline
$(OUTPUT)/test_queue_map.o: test_queue_stack_map.h
$(OUTPUT)/test_stack_map.o: test_queue_stack_map.h
$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
$(OUTPUT)/test_progs.o: flow_dissector_load.h
TEST_PROGS_CFLAGS := -I. -I$(OUTPUT)
TEST_MAPS_CFLAGS := -I. -I$(OUTPUT)
TEST_VERIFIER_CFLAGS := -I. -I$(OUTPUT) -Iverifier
# Build BPF object using Clang
# $1 - input .c file
# $2 - output .o file
# $3 - CFLAGS
# $4 - LDFLAGS
define CLANG_BPF_BUILD_RULE
($(CLANG) $3 -O2 -target bpf -emit-llvm \
-c $1 -o - || echo "BPF obj compilation failed") | \
$(LLC) -march=bpf -mcpu=probe $4 -filetype=obj -o $2
endef
# Similar to CLANG_BPF_BUILD_RULE, but using native Clang and bpf LLC
define CLANG_NATIVE_BPF_BUILD_RULE
($(CLANG) $3 -O2 -emit-llvm \
-c $1 -o - || echo "BPF obj compilation failed") | \
$(LLC) -march=bpf -mcpu=probe $4 -filetype=obj -o $2
endef
# Build BPF object using GCC
define GCC_BPF_BUILD_RULE
$(BPF_GCC) $3 $4 -O2 -c $1 -o $2
endef
# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on
# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES.
# Parameters:
# $1 - test runner base binary name (e.g., test_progs)
# $2 - test runner extra "flavor" (e.g., alu32, gcc-bpf, etc)
define DEFINE_TEST_RUNNER
TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
TRUNNER_BINARY := $1$(if $2,-)$2
TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \
$$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c)))
TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \
$$(filter %.c,$(TRUNNER_EXTRA_SOURCES)))
TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES))
TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h
TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \
$$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c)))
# Evaluate rules now with extra TRUNNER_XXX variables above already defined
$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2))
endef
# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and
# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with:
# $1 - test runner base binary name (e.g., test_progs)
# $2 - test runner extra "flavor" (e.g., alu32, gcc-bpf, etc)
define DEFINE_TEST_RUNNER_RULES
ifeq ($($(TRUNNER_OUTPUT)-dir),)
$(TRUNNER_OUTPUT)-dir := y
$(TRUNNER_OUTPUT):
mkdir -p $$@
endif
# ensure we set up BPF objects generation rule just once for a given
# input/output directory combination
ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),)
$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y
$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.o: \
$(TRUNNER_BPF_PROGS_DIR)/%.c \
$(TRUNNER_BPF_PROGS_DIR)/*.h \
$$(BPF_HELPERS) | $(TRUNNER_OUTPUT)
$$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \
$(TRUNNER_BPF_CFLAGS), \
$(TRUNNER_BPF_LDFLAGS))
endif
# ensure we set up tests.h header generation rule just once
ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
$(TRUNNER_TESTS_DIR)-tests-hdr := y
$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
$$(shell ( cd $(TRUNNER_TESTS_DIR); \
echo '/* Generated header, do not edit */'; \
ls *.c 2> /dev/null | \
sed -e 's@\([^\.]*\)\.c@DEFINE_TEST(\1)@'; \
) > $$@)
endif
# compile individual test files
# Note: we cd into output directory to ensure embedded BPF object is found
$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \
$(TRUNNER_TESTS_DIR)/%.c \
$(TRUNNER_EXTRA_HDRS) \
$(TRUNNER_BPF_OBJS) \
$$(BPFOBJ) | $(TRUNNER_OUTPUT)
cd $$(@D) && $$(CC) $$(CFLAGS) $$(LDLIBS) -c $(CURDIR)/$$< -o $$(@F)
$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \
%.c \
$(TRUNNER_EXTRA_HDRS) \
$(TRUNNER_TESTS_HDR) \
$$(BPFOBJ) | $(TRUNNER_OUTPUT)
$$(CC) $$(CFLAGS) $$(LDLIBS) -c $$< -o $$@
$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT)
ifneq ($2,)
# only copy extra resources if in flavored build
cp -a $$^ $(TRUNNER_OUTPUT)/
endif
$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \
$(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \
| $(TRUNNER_BINARY)-extras
$$(CC) $$(CFLAGS) $$(LDLIBS) $$(filter %.a %.o,$$^) -o $$@
endef
# Define test_progs test runner.
TRUNNER_TESTS_DIR := prog_tests
TRUNNER_BPF_PROGS_DIR := progs
TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c \
flow_dissector_load.h
TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read \
$(wildcard progs/btf_dump_test_case_*.c)
TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
TRUNNER_BPF_CFLAGS := -I. -I$(OUTPUT) $(BPF_CFLAGS) $(CLANG_CFLAGS)
TRUNNER_BPF_LDFLAGS :=
$(eval $(call DEFINE_TEST_RUNNER,test_progs))
# Define test_progs-alu32 test runner.
ifneq ($(SUBREG_CODEGEN),)
ALU32_BUILD_DIR = $(OUTPUT)/alu32
TEST_CUSTOM_PROGS += $(ALU32_BUILD_DIR)/test_progs_32
$(ALU32_BUILD_DIR):
mkdir -p $@
$(ALU32_BUILD_DIR)/urandom_read: $(OUTPUT)/urandom_read | $(ALU32_BUILD_DIR)
cp $< $@
$(ALU32_BUILD_DIR)/test_progs_32: test_progs.c $(OUTPUT)/libbpf.a\
$(ALU32_BUILD_DIR)/urandom_read \
| $(ALU32_BUILD_DIR)
$(CC) $(TEST_PROGS_CFLAGS) $(CFLAGS) \
-o $(ALU32_BUILD_DIR)/test_progs_32 \
test_progs.c test_stub.c cgroup_helpers.c trace_helpers.c prog_tests/*.c \
$(OUTPUT)/libbpf.a $(LDLIBS)
$(ALU32_BUILD_DIR)/test_progs_32: $(PROG_TESTS_H)
$(ALU32_BUILD_DIR)/test_progs_32: prog_tests/*.c
$(ALU32_BUILD_DIR)/%.o: progs/%.c $(ALU32_BUILD_DIR)/test_progs_32 \
| $(ALU32_BUILD_DIR)
($(CLANG) $(BPF_CFLAGS) $(CLANG_CFLAGS) -O2 -target bpf -emit-llvm \
-c $< -o - || echo "clang failed") | \
$(LLC) -march=bpf -mcpu=probe -mattr=+alu32 $(LLC_FLAGS) \
-filetype=obj -o $@
TRUNNER_BPF_LDFLAGS += -mattr=+alu32
$(eval $(call DEFINE_TEST_RUNNER,test_progs,alu32))
endif
# Define test_progs BPF-GCC-flavored test runner.
ifneq ($(BPF_GCC),)
GCC_SYS_INCLUDES = $(call get_sys_includes,gcc)
IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
ifeq ($(IS_LITTLE_ENDIAN),)
MENDIAN=-mbig-endian
else
MENDIAN=-mlittle-endian
endif
BPF_GCC_CFLAGS = $(GCC_SYS_INCLUDES) $(MENDIAN)
BPF_GCC_BUILD_DIR = $(OUTPUT)/bpf_gcc
TEST_CUSTOM_PROGS += $(BPF_GCC_BUILD_DIR)/test_progs_bpf_gcc
$(BPF_GCC_BUILD_DIR):
mkdir -p $@
$(BPF_GCC_BUILD_DIR)/urandom_read: $(OUTPUT)/urandom_read | $(BPF_GCC_BUILD_DIR)
cp $< $@
$(BPF_GCC_BUILD_DIR)/test_progs_bpf_gcc: $(OUTPUT)/test_progs \
| $(BPF_GCC_BUILD_DIR)
cp $< $@
$(BPF_GCC_BUILD_DIR)/%.o: progs/%.c $(BPF_GCC_BUILD_DIR)/test_progs_bpf_gcc \
| $(BPF_GCC_BUILD_DIR)
$(BPF_GCC) $(BPF_CFLAGS) $(BPF_GCC_CFLAGS) -O2 -c $< -o $@
MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc) $(MENDIAN)
TRUNNER_BPF_LDFLAGS :=
$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
endif
# Have one program compiled without "-target bpf" to test whether libbpf loads
# it successfully
$(OUTPUT)/test_xdp.o: progs/test_xdp.c
($(CLANG) $(BPF_CFLAGS) $(CLANG_CFLAGS) -O2 -emit-llvm -c $< -o - || \
echo "clang failed") | \
$(LLC) -march=bpf -mcpu=probe $(LLC_FLAGS) -filetype=obj -o $@
# libbpf has to be built before BPF programs due to bpf_helper_defs.h
$(OUTPUT)/%.o: progs/%.c | $(BPFOBJ)
($(CLANG) $(BPF_CFLAGS) $(CLANG_CFLAGS) -O2 -target bpf -emit-llvm \
-c $< -o - || echo "clang failed") | \
$(LLC) -march=bpf -mcpu=probe $(LLC_FLAGS) -filetype=obj -o $@
PROG_TESTS_DIR = $(OUTPUT)/prog_tests
$(PROG_TESTS_DIR):
mkdir -p $@
PROG_TESTS_H := $(PROG_TESTS_DIR)/tests.h
PROG_TESTS_FILES := $(wildcard prog_tests/*.c)
test_progs.c: $(PROG_TESTS_H)
$(OUTPUT)/test_progs: CFLAGS += $(TEST_PROGS_CFLAGS)
$(OUTPUT)/test_progs: test_progs.c $(PROG_TESTS_FILES) | $(OUTPUT)/test_attach_probe.o $(PROG_TESTS_H)
$(PROG_TESTS_H): $(PROG_TESTS_FILES) | $(PROG_TESTS_DIR)
$(shell ( cd prog_tests/; \
echo '/* Generated header, do not edit */'; \
ls *.c 2> /dev/null | \
sed -e 's@\([^\.]*\)\.c@DEFINE_TEST(\1)@'; \
) > $(PROG_TESTS_H))
MAP_TESTS_DIR = $(OUTPUT)/map_tests
$(MAP_TESTS_DIR):
mkdir -p $@
MAP_TESTS_H := $(MAP_TESTS_DIR)/tests.h
MAP_TESTS_FILES := $(wildcard map_tests/*.c)
test_maps.c: $(MAP_TESTS_H)
$(OUTPUT)/test_maps: CFLAGS += $(TEST_MAPS_CFLAGS)
$(OUTPUT)/test_maps: test_maps.c $(MAP_TESTS_FILES) | $(MAP_TESTS_H)
$(MAP_TESTS_H): $(MAP_TESTS_FILES) | $(MAP_TESTS_DIR)
$(shell ( cd map_tests/; \
echo '/* Generated header, do not edit */'; \
echo '#ifdef DECLARE'; \
ls *.c 2> /dev/null | \
sed -e 's@\([^\.]*\)\.c@extern void test_\1(void);@'; \
echo '#endif'; \
echo '#ifdef CALL'; \
ls *.c 2> /dev/null | \
sed -e 's@\([^\.]*\)\.c@test_\1();@'; \
echo '#endif' \
) > $(MAP_TESTS_H))
VERIFIER_TESTS_DIR = $(OUTPUT)/verifier
$(VERIFIER_TESTS_DIR):
mkdir -p $@
VERIFIER_TESTS_H := $(VERIFIER_TESTS_DIR)/tests.h
VERIFIER_TEST_FILES := $(wildcard verifier/*.c)
test_verifier.c: $(VERIFIER_TESTS_H)
$(OUTPUT)/test_verifier: CFLAGS += $(TEST_VERIFIER_CFLAGS)
$(OUTPUT)/test_verifier: test_verifier.c | $(VERIFIER_TEST_FILES) $(VERIFIER_TESTS_H)
$(VERIFIER_TESTS_H): $(VERIFIER_TEST_FILES) | $(VERIFIER_TESTS_DIR)
# Define test_maps test runner.
TRUNNER_TESTS_DIR := map_tests
TRUNNER_BPF_PROGS_DIR := progs
TRUNNER_EXTRA_SOURCES := test_maps.c
TRUNNER_EXTRA_FILES :=
TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built)
TRUNNER_BPF_CFLAGS :=
TRUNNER_BPF_LDFLAGS :=
$(eval $(call DEFINE_TEST_RUNNER,test_maps))
# Define test_verifier test runner.
# It is much simpler than test_maps/test_progs and sufficiently different from
# them (e.g., test.h is using completely pattern), that it's worth just
# explicitly defining all the rules explicitly.
verifier/tests.h: verifier/*.c
$(shell ( cd verifier/; \
echo '/* Generated header, do not edit */'; \
echo '#ifdef FILL_ARRAY'; \
ls *.c 2> /dev/null | \
sed -e 's@\(.*\)@#include \"\1\"@'; \
ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \
echo '#endif' \
) > $(VERIFIER_TESTS_H))
) > verifier/tests.h)
$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
$(CC) $(CFLAGS) $(LDLIBS) $(filter %.a %.o %.c,$^) -o $@
EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(ALU32_BUILD_DIR) $(BPF_GCC_BUILD_DIR) \
$(VERIFIER_TESTS_H) $(PROG_TESTS_H) $(MAP_TESTS_H) \
feature
EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) \
prog_tests/tests.h map_tests/tests.h verifier/tests.h \
feature $(OUTPUT)/*.o $(OUTPUT)/alu32 $(OUTPUT)/bpf_gcc
tools/testing/selftests/bpf/prog_tests/core_reloc.c
View file @ 47a92ae0
......@@ -211,8 +211,8 @@ static struct core_reloc_test_case test_cases[] = {
.input_len = 0,
.output = STRUCT_TO_CHAR_PTR(core_reloc_kernel_output) {
.valid = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, },
.comm = "test_progs\0\0\0\0\0",
.comm_len = 11,
.comm = "test_progs",
.comm_len = sizeof("test_progs"),
},
.output_len = sizeof(struct core_reloc_kernel_output),
},
......
tools/testing/selftests/bpf/progs/core_reloc_types.h
View file @ 47a92ae0
......@@ -6,7 +6,7 @@
struct core_reloc_kernel_output {
int valid[10];
char comm[16];
char comm[sizeof("test_progs")];
int comm_len;
};
......
tools/testing/selftests/bpf/progs/test_core_reloc_kernel.c
View file @ 47a92ae0
......@@ -15,7 +15,8 @@ static volatile struct data {
struct core_reloc_kernel_output {
int valid[10];
char comm[16];
/* we have test_progs[-flavor], so cut flavor part */
char comm[sizeof("test_progs")];
int comm_len;
};
......
tools/testing/selftests/bpf/test_libbpf.sh deleted 100755 → 0
View file @ 8d285a3b
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
export TESTNAME=test_libbpf
# Determine selftest success via shell exit code
exit_handler()
{
if [ $? -eq 0 ]; then
echo "selftests: $TESTNAME [PASS]";
else
echo "$TESTNAME: failed at file $LAST_LOADED" 1>&2
echo "selftests: $TESTNAME [FAILED]";
fi
}
libbpf_open_file()
{
LAST_LOADED=$1
if [ -n "$VERBOSE" ]; then
./test_libbpf_open $1
else
./test_libbpf_open --quiet $1
fi
}
# Exit script immediately (well catched by trap handler) if any
# program/thing exits with a non-zero status.
set -e
# (Use 'trap -l' to list meaning of numbers)
trap exit_handler 0 2 3 6 9
libbpf_open_file test_l4lb.o
# Load a program with BPF-to-BPF calls
libbpf_open_file test_l4lb_noinline.o
# Load a program compiled without the "-target bpf" flag
libbpf_open_file test_xdp.o
# Success
exit 0
tools/testing/selftests/bpf/test_libbpf_open.c deleted 100644 → 0
View file @ 8d285a3b
/* SPDX-License-Identifier: GPL-2.0
* Copyright (c) 2018 Jesper Dangaard Brouer, Red Hat Inc.
*/
static const char *__doc__ =
"Libbpf test program for loading BPF ELF object files";
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <bpf/libbpf.h>
#include <getopt.h>
#include "bpf_rlimit.h"
static const struct option long_options[] = {
{"help", no_argument, NULL, 'h' },
{"debug", no_argument, NULL, 'D' },
{"quiet", no_argument, NULL, 'q' },
{0, 0, NULL, 0 }
};
static void usage(char *argv[])
{
int i;
printf("\nDOCUMENTATION:\n%s\n\n", __doc__);
printf(" Usage: %s (options-see-below) BPF_FILE\n", argv[0]);
printf(" Listing options:\n");
for (i = 0; long_options[i].name != 0; i++) {
printf(" --%-12s", long_options[i].name);
printf(" short-option: -%c",
long_options[i].val);
printf("\n");
}
printf("\n");
}
static bool debug = 0;
static int libbpf_debug_print(enum libbpf_print_level level,
const char *fmt, va_list args)
{
if (level == LIBBPF_DEBUG && !debug)
return 0;
fprintf(stderr, "[%d] ", level);
return vfprintf(stderr, fmt, args);
}
#define EXIT_FAIL_LIBBPF EXIT_FAILURE
#define EXIT_FAIL_OPTION 2
int test_walk_progs(struct bpf_object *obj, bool verbose)
{
struct bpf_program *prog;
int cnt = 0;
bpf_object__for_each_program(prog, obj) {
cnt++;
if (verbose)
printf("Prog (count:%d) section_name: %s\n", cnt,
bpf_program__title(prog, false));
}
return 0;
}
int test_walk_maps(struct bpf_object *obj, bool verbose)
{
struct bpf_map *map;
int cnt = 0;
bpf_object__for_each_map(map, obj) {
cnt++;
if (verbose)
printf("Map (count:%d) name: %s\n", cnt,
bpf_map__name(map));
}
return 0;
}
int test_open_file(char *filename, bool verbose)
{
struct bpf_object *bpfobj = NULL;
long err;
if (verbose)
printf("Open BPF ELF-file with libbpf: %s\n", filename);
/* Load BPF ELF object file and check for errors */
bpfobj = bpf_object__open(filename);
err = libbpf_get_error(bpfobj);
if (err) {
char err_buf[128];
libbpf_strerror(err, err_buf, sizeof(err_buf));
if (verbose)
printf("Unable to load eBPF objects in file '%s': %s\n",
filename, err_buf);
return EXIT_FAIL_LIBBPF;
}
test_walk_progs(bpfobj, verbose);
test_walk_maps(bpfobj, verbose);
if (verbose)
printf("Close BPF ELF-file with libbpf: %s\n",
bpf_object__name(bpfobj));
bpf_object__close(bpfobj);
return 0;
}
int main(int argc, char **argv)
{
char filename[1024] = { 0 };
bool verbose = 1;
int longindex = 0;
int opt;
libbpf_set_print(libbpf_debug_print);
/* Parse commands line args */
while ((opt = getopt_long(argc, argv, "hDq",
long_options, &longindex)) != -1) {
switch (opt) {
case 'D':
debug = 1;
break;
case 'q': /* Use in scripting mode */
verbose = 0;
break;
case 'h':
default:
usage(argv);
return EXIT_FAIL_OPTION;
}
}
if (optind >= argc) {
usage(argv);
printf("ERROR: Expected BPF_FILE argument after options\n");
return EXIT_FAIL_OPTION;
}
snprintf(filename, sizeof(filename), "%s", argv[optind]);
return test_open_file(filename, verbose);
}
tools/testing/selftests/bpf/test_maps.c
View file @ 47a92ae0
......@@ -1717,9 +1717,9 @@ static void run_all_tests(void)
test_map_in_map();
}
#define DECLARE
#define DEFINE_TEST(name) extern void test_##name(void);
#include <map_tests/tests.h>
#undef DECLARE
#undef DEFINE_TEST
int main(void)
{
......@@ -1731,9 +1731,9 @@ int main(void)
map_flags = BPF_F_NO_PREALLOC;
run_all_tests();
#define CALL
#define DEFINE_TEST(name) test_##name();
#include <map_tests/tests.h>
#undef CALL
#undef DEFINE_TEST
printf("test_maps: OK, %d SKIPPED\n", skips);
return 0;
......
tools/testing/selftests/bpf/test_progs.c
View file @ 47a92ae0
......@@ -306,7 +306,7 @@ void *spin_lock_thread(void *arg)
}
/* extern declarations for test funcs */
#define DEFINE_TEST(name) extern void test_##name();
#define DEFINE_TEST(name) extern void test_##name(void);
#include <prog_tests/tests.h>
#undef DEFINE_TEST
......@@ -518,6 +518,33 @@ static void stdio_restore(void)
#endif
}
/*
* Determine if test_progs is running as a "flavored" test runner and switch
* into corresponding sub-directory to load correct BPF objects.
*
* This is done by looking at executable name. If it contains "-flavor"
* suffix, then we are running as a flavored test runner.
*/
int cd_flavor_subdir(const char *exec_name)
{
/* General form of argv[0] passed here is:
* some/path/to/test_progs[-flavor], where -flavor part is optional.
* First cut out "test_progs[-flavor]" part, then extract "flavor"
* part, if it's there.
*/
const char *flavor = strrchr(exec_name, '/');
if (!flavor)
return 0;
flavor++;
flavor = strrchr(flavor, '-');
if (!flavor)
return 0;
flavor++;
printf("Switching to flavor '%s' subdirectory...\n", flavor);
return chdir(flavor);
}
int main(int argc, char **argv)
{
static const struct argp argp = {
......@@ -531,6 +558,10 @@ int main(int argc, char **argv)
if (err)
return err;
err = cd_flavor_subdir(argv[0]);
if (err)
return err;
libbpf_set_print(libbpf_print_fn);
srand(time(NULL));
......
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