summaryrefslogtreecommitdiff
path: root/tools/testing/selftests/bpf/Makefile
blob: 6889c19a628c238a90da948d5733056039998fbd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
# SPDX-License-Identifier: GPL-2.0
include ../../../../scripts/Kbuild.include
include ../../../scripts/Makefile.arch

LIBDIR := ../../../lib
BPFDIR := $(LIBDIR)/bpf
APIDIR := ../../../include/uapi
GENDIR := ../../../../include/generated
GENHDR := $(GENDIR)/autoconf.h

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

CLANG		?= clang
LLC		?= llc
LLVM_OBJCOPY	?= llvm-objcopy
LLVM_READELF	?= llvm-readelf
BTF_PAHOLE	?= pahole
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 \
	  -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_select_reuseport test_section_names \
	test_netcnt test_tcpnotify_user test_sock_fields test_sysctl test_hashmap \
	test_btf_dump 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; }" | \
			$(CLANG) -target bpf -O2 -emit-llvm -S -x c - -o - | \
			$(LLC) -mattr=+alu32 -mcpu=v3 2>&1 | \
			grep 'if w')
ifneq ($(SUBREG_CODEGEN),)
TEST_GEN_FILES += $(patsubst %.o,alu32/%.o, $(BPF_OBJ_FILES))
endif

ifneq ($(BPF_GCC),)
TEST_GEN_FILES += $(patsubst %.o,bpf_gcc/%.o, $(BPF_OBJ_FILES))
endif

# 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 \
	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_libbpf_open 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

# NOTE: $(OUTPUT) won't get default value if used before lib.mk
TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read
all: $(TEST_CUSTOM_PROGS)

$(OUTPUT)/urandom_read: $(OUTPUT)/%: %.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

$(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)/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
$(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:

$(BPFOBJ): force
	$(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/

PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1)

# Let newer LLVM versions transparently probe the kernel for availability
# of full BPF instruction set.
ifeq ($(PROBE),)
  CPU ?= probe
else
  CPU ?= generic
endif

# 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
CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
BPF_CFLAGS = -I. -I./include/uapi -I../../../include/uapi \
	     -I$(OUTPUT)/../usr/include -D__TARGET_ARCH_$(SRCARCH)

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)/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

BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris)
BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF)
BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm')
BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \
			  $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \
			  $(LLVM_READELF) -S ./llvm_btf_verify.o | grep BTF; \
			  /bin/rm -f ./llvm_btf_verify.o)

ifneq ($(BTF_LLVM_PROBE),)
	BPF_CFLAGS += -g
else
ifneq ($(BTF_LLC_PROBE),)
ifneq ($(BTF_PAHOLE_PROBE),)
ifneq ($(BTF_OBJCOPY_PROBE),)
	BPF_CFLAGS += -g
	LLC_FLAGS += -mattr=dwarfris
	DWARF2BTF = y
endif
endif
endif
endif

TEST_PROGS_CFLAGS := -I. -I$(OUTPUT)
TEST_MAPS_CFLAGS := -I. -I$(OUTPUT)
TEST_VERIFIER_CFLAGS := -I. -I$(OUTPUT) -Iverifier

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") | \
	$(LLC) -march=bpf -mattr=+alu32 -mcpu=$(CPU) $(LLC_FLAGS) \
		-filetype=obj -o $@
ifeq ($(DWARF2BTF),y)
	$(BTF_PAHOLE) -J $@
endif
endif

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 $@
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") | \
	$(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
ifeq ($(DWARF2BTF),y)
	$(BTF_PAHOLE) -J $@
endif

$(OUTPUT)/%.o: progs/%.c
	($(CLANG) $(BPF_CFLAGS) $(CLANG_CFLAGS) -O2 -target bpf -emit-llvm \
		-c $< -o - || echo "clang failed") | \
	$(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
ifeq ($(DWARF2BTF),y)
	$(BTF_PAHOLE) -J $@
endif

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) | $(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)
	$(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))

EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(ALU32_BUILD_DIR) $(BPF_GCC_BUILD_DIR) \
	$(VERIFIER_TESTS_H) $(PROG_TESTS_H) $(MAP_TESTS_H) \
	feature