[linux-2.6-block.git] / tools / testing / selftests / bpf / Makefile

# SPDX-License-Identifier: GPL-2.0
include ../../../../scripts/Kbuild.include
include ../../../scripts/Makefile.arch

CURDIR := $(abspath .)
TOOLSDIR := $(abspath ../../..)
LIBDIR := $(TOOLSDIR)/lib
BPFDIR := $(LIBDIR)/bpf
TOOLSINCDIR := $(TOOLSDIR)/include
BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool
APIDIR := $(TOOLSINCDIR)/uapi
GENDIR := $(abspath ../../../../include/generated)
GENHDR := $(GENDIR)/autoconf.h

ifneq ($(wildcard $(GENHDR)),)
  GENFLAGS := -DHAVE_GENHDR
endif

CLANG		?= clang
LLC		?= llc
LLVM_OBJCOPY	?= llvm-objcopy
BPF_GCC		?= $(shell command -v bpf-gcc;)
CFLAGS += -g -Wall -O2 $(GENFLAGS) -I$(APIDIR) -I$(LIBDIR) -I$(BPFDIR)	\
	  -I$(GENDIR) -I$(TOOLSINCDIR) -I$(CURDIR)			\
	  -Dbpf_prog_load=bpf_prog_test_load				\
	  -Dbpf_load_program=bpf_test_load_program
LDLIBS += -lcap -lelf -lrt -lpthread

# Order correspond to 'make run_tests' order
TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
	test_align test_verifier_log test_dev_cgroup test_tcpbpf_user \
	test_sock test_btf test_sockmap get_cgroup_id_user test_socket_cookie \
	test_cgroup_storage \
	test_netcnt test_tcpnotify_user test_sock_fields test_sysctl test_hashmap \
	test_cgroup_attach test_progs-no_alu32

# Also test bpf-gcc, if present
ifneq ($(BPF_GCC),)
TEST_GEN_PROGS += test_progs-bpf_gcc
endif

TEST_GEN_FILES =
TEST_FILES = test_lwt_ip_encap.o \
	test_tc_edt.o

# Order correspond to 'make run_tests' order
TEST_PROGS := test_kmod.sh \
	test_xdp_redirect.sh \
	test_xdp_meta.sh \
	test_xdp_veth.sh \
	test_offload.py \
	test_sock_addr.sh \
	test_tunnel.sh \
	test_lwt_seg6local.sh \
	test_lirc_mode2.sh \
	test_skb_cgroup_id.sh \
	test_flow_dissector.sh \
	test_xdp_vlan_mode_generic.sh \
	test_xdp_vlan_mode_native.sh \
	test_lwt_ip_encap.sh \
	test_tcp_check_syncookie.sh \
	test_tc_tunnel.sh \
	test_tc_edt.sh \
	test_xdping.sh \
	test_bpftool_build.sh

TEST_PROGS_EXTENDED := with_addr.sh \
	with_tunnels.sh \
	tcp_client.py \
	tcp_server.py \
	test_xdp_vlan.sh

# Compile but not part of 'make run_tests'
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 xdping test_cpp

TEST_CUSTOM_PROGS = urandom_read

include ../lib.mk

# 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) -c $(CFLAGS) -o $@ $<

BPFOBJ := $(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
$(OUTPUT)/test_sock: cgroup_helpers.c
$(OUTPUT)/test_sock_addr: cgroup_helpers.c
$(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)/get_cgroup_id_user: cgroup_helpers.c
$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
$(OUTPUT)/test_netcnt: cgroup_helpers.c
$(OUTPUT)/test_sock_fields: cgroup_helpers.c
$(OUTPUT)/test_sysctl: cgroup_helpers.c
$(OUTPUT)/test_cgroup_attach: cgroup_helpers.c

.PHONY: force

# force a rebuild of BPFOBJ when its dependencies are updated
force:

DEFAULT_BPFTOOL := $(OUTPUT)/tools/usr/local/sbin/bpftool
BPFTOOL ?= $(DEFAULT_BPFTOOL)

$(DEFAULT_BPFTOOL): force
	$(MAKE) -C $(BPFTOOLDIR) DESTDIR=$(OUTPUT)/tools install

$(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.
#
# Use '-idirafter': Don't interfere with include mechanics except where the
# build would have failed anyways.
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

# Determine target endianness.
IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
			grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)

CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) 			\
	     -I. -I./include/uapi -I$(APIDIR)				\
	     -I$(BPFDIR) -I$(abspath $(OUTPUT)/../usr/include)

CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
	       -Wno-compare-distinct-pointer-types

$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline
$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline

$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h

# 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) -mattr=dwarfris -march=bpf -mcpu=probe $4 -filetype=obj -o $2
endef
# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
define CLANG_NOALU32_BPF_BUILD_RULE
	($(CLANG) $3 -O2 -target bpf -emit-llvm				\
		-c $1 -o - || echo "BPF obj compilation failed") | 	\
	$(LLC) -march=bpf -mcpu=v2 $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

SKEL_BLACKLIST := btf__% test_pinning_invalid.c

# 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., no_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_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c))
TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, $$(TRUNNER_BPF_SRCS))
TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h,	\
				 $$(filter-out $(SKEL_BLACKLIST),	\
					       $$(TRUNNER_BPF_SRCS)))

# 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., no_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))

$(TRUNNER_BPF_SKELS): $(TRUNNER_OUTPUT)/%.skel.h:			\
		      $(TRUNNER_OUTPUT)/%.o				\
		      | $(BPFTOOL) $(TRUNNER_OUTPUT)
	$$(BPFTOOL) gen skeleton $$< > $$@
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)				\
		      $(TRUNNER_BPF_SKELS)				\
		      $$(BPFOBJ) | $(TRUNNER_OUTPUT)
	cd $$(@D) && $$(CC) $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F)

$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o:				\
		       %.c						\
		       $(TRUNNER_EXTRA_HDRS)				\
		       $(TRUNNER_TESTS_HDR)				\
		       $$(BPFOBJ) | $(TRUNNER_OUTPUT)
	$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@

# only copy extra resources if in flavored build
$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT)
ifneq ($2,)
	cp -a $$^ $(TRUNNER_OUTPUT)/
endif

$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS)			\
			     $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ)		\
			     | $(TRUNNER_BINARY)-extras
	$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -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 := -mattr=+alu32
$(eval $(call DEFINE_TEST_RUNNER,test_progs))

# Define test_progs-no_alu32 test runner.
TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE
TRUNNER_BPF_LDFLAGS :=
$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))

# Define test_progs BPF-GCC-flavored test runner.
ifneq ($(BPF_GCC),)
TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc)
TRUNNER_BPF_LDFLAGS :=
$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
endif

# 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\"@'; \
		  echo '#endif' \
		) > verifier/tests.h)
$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
	$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@

# Make sure we are able to include and link libbpf against c++.
$(OUTPUT)/test_cpp: test_cpp.cpp $(BPFOBJ)
	$(CXX) $(CFLAGS) $^ $(LDLIBS) -o $@

EXTRA_CLEAN := $(TEST_CUSTOM_PROGS)					\
	prog_tests/tests.h map_tests/tests.h verifier/tests.h		\
	feature $(OUTPUT)/*.o $(OUTPUT)/no_alu32 $(OUTPUT)/bpf_gcc	\
	tools *.skel.h
Commit	Line	Data
b2441318	1	# SPDX-License-Identifier: GPL-2.0
9cae4ace	2	include ../../../../scripts/Kbuild.include
748e50c1	3	include ../../../scripts/Makefile.arch
618e165b	4
74b5a596	5	CURDIR := $(abspath .)
f3c926a4 AN	6	TOOLSDIR := $(abspath ../../..)
f3c926a4 AN	7	LIBDIR := $(TOOLSDIR)/lib
e8f1f34a	8	BPFDIR := $(LIBDIR)/bpf
f3c926a4 AN	9	TOOLSINCDIR := $(TOOLSDIR)/include
	10	BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool
	11	APIDIR := $(TOOLSINCDIR)/uapi
74b5a596	12	GENDIR := $(abspath ../../../../include/generated)
02ea80b1	13	GENHDR := $(GENDIR)/autoconf.h
d498f871	14
02ea80b1 DB	15	ifneq ($(wildcard $(GENHDR)),)
	16	GENFLAGS := -DHAVE_GENHDR
	17	endif
	18
3ef84346 JW	19	CLANG ?= clang
	20	LLC ?= llc
	21	LLVM_OBJCOPY ?= llvm-objcopy
4ce150b6	22	BPF_GCC ?= $(shell command -v bpf-gcc;)
74b5a596	23	CFLAGS += -g -Wall -O2 $(GENFLAGS) -I$(APIDIR) -I$(LIBDIR) -I$(BPFDIR) \
f3c926a4	24	-I$(GENDIR) -I$(TOOLSINCDIR) -I$(CURDIR) \
74b5a596	25	-Dbpf_prog_load=bpf_prog_test_load \
9d120b41	26	-Dbpf_load_program=bpf_test_load_program
af32efee	27	LDLIBS += -lcap -lelf -lrt -lpthread
5aa5bd14	28
f09b2e38	29	# Order correspond to 'make run_tests' order
18b3ad90	30	TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
1d436885	31	test_align test_verifier_log test_dev_cgroup test_tcpbpf_user \
25a7991c	32	test_sock test_btf test_sockmap get_cgroup_id_user test_socket_cookie \
415bb4e1	33	test_cgroup_storage \
2d2a3ad8	34	test_netcnt test_tcpnotify_user test_sock_fields test_sysctl test_hashmap \
56bf877a	35	test_cgroup_attach test_progs-no_alu32
3ef84346	36
74b5a596	37	# Also test bpf-gcc, if present
4ce150b6	38	ifneq ($(BPF_GCC),)
74b5a596	39	TEST_GEN_PROGS += test_progs-bpf_gcc
4ce150b6 IL	40	endif
4ce150b6 IL	41
74b5a596	42	TEST_GEN_FILES =
e47a1799 AR	43	TEST_FILES = test_lwt_ip_encap.o \
e47a1799 AR	44	test_tc_edt.o
74b5a596	45
f09b2e38 JDB	46	# Order correspond to 'make run_tests' order
f09b2e38 JDB	47	TEST_PROGS := test_kmod.sh \
f09b2e38 JDB	48	test_xdp_redirect.sh \
f09b2e38 JDB	49	test_xdp_meta.sh \
88091ff5	50	test_xdp_veth.sh \
622adafb	51	test_offload.py \
933a741e	52	test_sock_addr.sh \
c99a84ea	53	test_tunnel.sh \
6bdd533c	54	test_lwt_seg6local.sh \
5ecd8c22	55	test_lirc_mode2.sh \
50b3ed57	56	test_skb_cgroup_id.sh \
97396ff0	57	test_flow_dissector.sh \
d35661fc JDB	58	test_xdp_vlan_mode_generic.sh \
d35661fc JDB	59	test_xdp_vlan_mode_native.sh \
bafc0ba8	60	test_lwt_ip_encap.sh \
98cdabcd	61	test_tcp_check_syncookie.sh \
7df5e3db	62	test_tc_tunnel.sh \
cd538502	63	test_tc_edt.sh \
45c5589d QM	64	test_xdping.sh \
45c5589d QM	65	test_bpftool_build.sh
5aa5bd14	66
f98937c6	67	TEST_PROGS_EXTENDED := with_addr.sh \
1be72f29	68	with_tunnels.sh \
f98937c6	69	tcp_client.py \
3035bb72 AR	70	tcp_server.py \
3035bb72 AR	71	test_xdp_vlan.sh
ef4ab844	72
f09b2e38	73	# Compile but not part of 'make run_tests'
cb79a4e1	74	TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \
25a7991c	75	flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
6bf6affe	76	test_lirc_mode2_user xdping test_cpp
f09b2e38	77
74b5a596 AN	78	TEST_CUSTOM_PROGS = urandom_read
74b5a596 AN	79
e8f1f34a ZSL	80	include ../lib.mk
e8f1f34a ZSL	81
03dcb784 AN	82	# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
	83	# to build individual tests.
	84	# NOTE: Semicolon at the end is critical to override lib.mk's default static
	85	# rule for binaries.
	86	$(notdir $(TEST_GEN_PROGS) \
	87	$(TEST_PROGS) \
	88	$(TEST_PROGS_EXTENDED) \
	89	$(TEST_GEN_PROGS_EXTENDED) \
	90	$(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ;
	91
74b5a596	92	$(OUTPUT)/urandom_read: urandom_read.c
f6827526	93	$(CC) -o $@ $< -Wl,--build-id
3ef84346	94
e93d9918 IL	95	$(OUTPUT)/test_stub.o: test_stub.c
	96	$(CC) -c $(CFLAGS) -o $@ $<
	97
41757dcb	98	BPFOBJ := $(OUTPUT)/libbpf.a
e8f1f34a	99
74b5a596	100	$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(BPFOBJ)
f09b2e38	101
41757dcb	102	$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
5ecd8c22	103	$(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c
1d436885	104	$(OUTPUT)/test_sock: cgroup_helpers.c
e50b0a6f	105	$(OUTPUT)/test_sock_addr: cgroup_helpers.c
194db0d9	106	$(OUTPUT)/test_socket_cookie: cgroup_helpers.c
16962b24	107	$(OUTPUT)/test_sockmap: cgroup_helpers.c
c65267e5	108	$(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c
435f90a3	109	$(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c
f269099a	110	$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
68cfa3ac	111	$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
371e4fcc	112	$(OUTPUT)/test_netcnt: cgroup_helpers.c
e0b27b3f	113	$(OUTPUT)/test_sock_fields: cgroup_helpers.c
1f5fa9ab	114	$(OUTPUT)/test_sysctl: cgroup_helpers.c
ba0c0cc0	115	$(OUTPUT)/test_cgroup_attach: cgroup_helpers.c
41757dcb	116
e8f1f34a	117	.PHONY: force
d498f871	118
d498f871 MS	119	# force a rebuild of BPFOBJ when its dependencies are updated
	120	force:
	121
f3c926a4 AN	122	DEFAULT_BPFTOOL := $(OUTPUT)/tools/usr/local/sbin/bpftool
	123	BPFTOOL ?= $(DEFAULT_BPFTOOL)
	124
	125	$(DEFAULT_BPFTOOL): force
	126	$(MAKE) -C $(BPFTOOLDIR) DESTDIR=$(OUTPUT)/tools install
	127
e01a75c1	128	$(BPFOBJ): force
e8f1f34a	129	$(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/
6882804c	130
74b5a596 AN	131	BPF_HELPERS := $(BPFDIR)/bpf_helper_defs.h $(wildcard $(BPFDIR)/bpf_*.h)
	132	$(BPFDIR)/bpf_helper_defs.h:
	133	$(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/ bpf_helper_defs.h
	134
167381f3 SB	135	# Get Clang's default includes on this system, as opposed to those seen by
	136	# '-target bpf'. This fixes "missing" files on some architectures/distros,
	137	# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
	138	#
	139	# Use '-idirafter': Don't interfere with include mechanics except where the
	140	# build would have failed anyways.
4ce150b6 IL	141	define get_sys_includes
4ce150b6 IL	142	$(shell $(1) -v -E - </dev/null 2>&1 \
167381f3	143	\| sed -n '/<...> search starts here:/,/End of search list./{ s\| \(/.*\)\|-idirafter \1\|p }')
4ce150b6	144	endef
74b5a596	145
313e7f6f IL	146	# Determine target endianness.
	147	IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null \| \
	148	grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
	149	MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
	150
4ce150b6	151	CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
313e7f6f	152	BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \
74b5a596 AN	153	-I. -I./include/uapi -I$(APIDIR) \
74b5a596 AN	154	-I$(BPFDIR) -I$(abspath $(OUTPUT)/../usr/include)
167381f3	155
4ce150b6 IL	156	CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
4ce150b6 IL	157	-Wno-compare-distinct-pointer-types
3bc35c63	158
4ce150b6 IL	159	$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline
4ce150b6 IL	160	$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline
3bc35c63	161
bf0f0fd9	162	$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
bf0f0fd9	163
74b5a596 AN	164	# Build BPF object using Clang
	165	# $1 - input .c file
	166	# $2 - output .o file
	167	# $3 - CFLAGS
	168	# $4 - LDFLAGS
	169	define CLANG_BPF_BUILD_RULE
	170	($(CLANG) $3 -O2 -target bpf -emit-llvm \
	171	-c $1 -o - \|\| echo "BPF obj compilation failed") \| \
ffc88174	172	$(LLC) -mattr=dwarfris -march=bpf -mcpu=probe $4 -filetype=obj -o $2
74b5a596	173	endef
24f65050 AN	174	# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
	175	define CLANG_NOALU32_BPF_BUILD_RULE
	176	($(CLANG) $3 -O2 -target bpf -emit-llvm \
	177	-c $1 -o - \|\| echo "BPF obj compilation failed") \| \
	178	$(LLC) -march=bpf -mcpu=v2 $4 -filetype=obj -o $2
	179	endef
74b5a596 AN	180	# Similar to CLANG_BPF_BUILD_RULE, but using native Clang and bpf LLC
	181	define CLANG_NATIVE_BPF_BUILD_RULE
	182	($(CLANG) $3 -O2 -emit-llvm \
	183	-c $1 -o - \|\| echo "BPF obj compilation failed") \| \
	184	$(LLC) -march=bpf -mcpu=probe $4 -filetype=obj -o $2
	185	endef
	186	# Build BPF object using GCC
	187	define GCC_BPF_BUILD_RULE
	188	$(BPF_GCC) $3 $4 -O2 -c $1 -o $2
	189	endef
	190
f3c926a4 AN	191	SKEL_BLACKLIST := btf__% test_pinning_invalid.c
f3c926a4 AN	192
74b5a596 AN	193	# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on
	194	# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES.
	195	# Parameters:
	196	# $1 - test runner base binary name (e.g., test_progs)
e13a2fe6	197	# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
74b5a596 AN	198	define DEFINE_TEST_RUNNER
	199
	200	TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
	201	TRUNNER_BINARY := $1$(if $2,-)$2
	202	TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \
	203	$$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c)))
	204	TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \
	205	$$(filter %.c,$(TRUNNER_EXTRA_SOURCES)))
	206	TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES))
	207	TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h
f3c926a4 AN	208	TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c))
	209	TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, $$(TRUNNER_BPF_SRCS))
	210	TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \
	211	$$(filter-out $(SKEL_BLACKLIST), \
	212	$$(TRUNNER_BPF_SRCS)))
74b5a596 AN	213
	214	# Evaluate rules now with extra TRUNNER_XXX variables above already defined
	215	$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2))
	216
	217	endef
	218
	219	# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and
	220	# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with:
	221	# $1 - test runner base binary name (e.g., test_progs)
e13a2fe6	222	# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
74b5a596	223	define DEFINE_TEST_RUNNER_RULES
e78e00bd	224
74b5a596 AN	225	ifeq ($($(TRUNNER_OUTPUT)-dir),)
	226	$(TRUNNER_OUTPUT)-dir := y
	227	$(TRUNNER_OUTPUT):
	228	mkdir -p $$@
	229	endif
	230
	231	# ensure we set up BPF objects generation rule just once for a given
	232	# input/output directory combination
	233	ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),)
	234	$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y
	235	$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.o: \
	236	$(TRUNNER_BPF_PROGS_DIR)/%.c \
	237	$(TRUNNER_BPF_PROGS_DIR)/*.h \
	238	$$(BPF_HELPERS) \| $(TRUNNER_OUTPUT)
	239	$$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \
	240	$(TRUNNER_BPF_CFLAGS), \
	241	$(TRUNNER_BPF_LDFLAGS))
f3c926a4 AN	242
	243	$(TRUNNER_BPF_SKELS): $(TRUNNER_OUTPUT)/%.skel.h: \
	244	$(TRUNNER_OUTPUT)/%.o \
	245	\| $(BPFTOOL) $(TRUNNER_OUTPUT)
	246	$$(BPFTOOL) gen skeleton $$< > $$@
74b5a596 AN	247	endif
	248
	249	# ensure we set up tests.h header generation rule just once
	250	ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
	251	$(TRUNNER_TESTS_DIR)-tests-hdr := y
	252	$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
	253	$$(shell ( cd $(TRUNNER_TESTS_DIR); \
	254	echo '/* Generated header, do not edit */'; \
	255	ls *.c 2> /dev/null \| \
	256	sed -e 's@\([^\.]*\)\.c@DEFINE_TEST(\1)@'; \
	257	) > $$@)
	258	endif
	259
	260	# compile individual test files
	261	# Note: we cd into output directory to ensure embedded BPF object is found
	262	$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \
	263	$(TRUNNER_TESTS_DIR)/%.c \
	264	$(TRUNNER_EXTRA_HDRS) \
	265	$(TRUNNER_BPF_OBJS) \
f3c926a4	266	$(TRUNNER_BPF_SKELS) \
74b5a596	267	$$(BPFOBJ) \| $(TRUNNER_OUTPUT)
45e587b5	268	cd $$(@D) && $$(CC) $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F)
74b5a596 AN	269
	270	$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \
	271	%.c \
	272	$(TRUNNER_EXTRA_HDRS) \
	273	$(TRUNNER_TESTS_HDR) \
	274	$$(BPFOBJ) \| $(TRUNNER_OUTPUT)
45e587b5	275	$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@
74b5a596	276
f3c926a4	277	# only copy extra resources if in flavored build
74b5a596 AN	278	$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) \| $(TRUNNER_OUTPUT)
74b5a596 AN	279	ifneq ($2,)
74b5a596 AN	280	cp -a $$^ $(TRUNNER_OUTPUT)/
	281	endif
	282
	283	$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \
	284	$(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \
	285	\| $(TRUNNER_BINARY)-extras
45e587b5	286	$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@
74b5a596 AN	287
	288	endef
	289
	290	# Define test_progs test runner.
	291	TRUNNER_TESTS_DIR := prog_tests
	292	TRUNNER_BPF_PROGS_DIR := progs
	293	TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c \
	294	flow_dissector_load.h
	295	TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read \
	296	$(wildcard progs/btf_dump_test_case_*.c)
	297	TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
	298	TRUNNER_BPF_CFLAGS := -I. -I$(OUTPUT) $(BPF_CFLAGS) $(CLANG_CFLAGS)
e13a2fe6	299	TRUNNER_BPF_LDFLAGS := -mattr=+alu32
74b5a596 AN	300	$(eval $(call DEFINE_TEST_RUNNER,test_progs))
74b5a596 AN	301
e13a2fe6	302	# Define test_progs-no_alu32 test runner.
24f65050	303	TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE
e13a2fe6 YS	304	TRUNNER_BPF_LDFLAGS :=
e13a2fe6 YS	305	$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))
3ef84346	306
74b5a596	307	# Define test_progs BPF-GCC-flavored test runner.
4ce150b6	308	ifneq ($(BPF_GCC),)
74b5a596	309	TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
313e7f6f	310	TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc)
74b5a596 AN	311	TRUNNER_BPF_LDFLAGS :=
74b5a596 AN	312	$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
4ce150b6 IL	313	endif
4ce150b6 IL	314
74b5a596 AN	315	# Define test_maps test runner.
	316	TRUNNER_TESTS_DIR := map_tests
	317	TRUNNER_BPF_PROGS_DIR := progs
	318	TRUNNER_EXTRA_SOURCES := test_maps.c
	319	TRUNNER_EXTRA_FILES :=
	320	TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built)
	321	TRUNNER_BPF_CFLAGS :=
	322	TRUNNER_BPF_LDFLAGS :=
	323	$(eval $(call DEFINE_TEST_RUNNER,test_maps))
	324
	325	# Define test_verifier test runner.
	326	# It is much simpler than test_maps/test_progs and sufficiently different from
	327	# them (e.g., test.h is using completely pattern), that it's worth just
	328	# explicitly defining all the rules explicitly.
	329	verifier/tests.h: verifier/*.c
e78e00bd	330	$(shell ( cd verifier/; \
2dfb4012 JK	331	echo '/* Generated header, do not edit */'; \
2dfb4012 JK	332	echo '#ifdef FILL_ARRAY'; \
74b5a596	333	ls .c 2> /dev/null \| sed -e 's@\(.\)@#include \"\1\"@'; \
2dfb4012	334	echo '#endif' \
74b5a596 AN	335	) > verifier/tests.h)
74b5a596 AN	336	$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) \| $(OUTPUT)
45e587b5	337	$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
2dfb4012	338
6bf6affe SF	339	# Make sure we are able to include and link libbpf against c++.
	340	$(OUTPUT)/test_cpp: test_cpp.cpp $(BPFOBJ)
	341	$(CXX) $(CFLAGS) $^ $(LDLIBS) -o $@
	342
74b5a596 AN	343	EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) \
74b5a596 AN	344	prog_tests/tests.h map_tests/tests.h verifier/tests.h \
f3c926a4 AN	345	feature $(OUTPUT)/*.o $(OUTPUT)/no_alu32 $(OUTPUT)/bpf_gcc \
f3c926a4 AN	346	tools *.skel.h