1 # SPDX-License-Identifier: GPL-2.0
4 BPFDIR := $(LIBDIR)/bpf
5 APIDIR := ../../../include/uapi
6 GENDIR := ../../../../include/generated
7 GENHDR := $(GENDIR)/autoconf.h
9 ifneq ($(wildcard $(GENHDR)),)
10 GENFLAGS := -DHAVE_GENHDR
15 LLVM_OBJCOPY ?= llvm-objcopy
16 LLVM_READELF ?= llvm-readelf
18 CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(BPFDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include
19 LDLIBS += -lcap -lelf -lrt -lpthread
21 # Order correspond to 'make run_tests' order
22 TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
23 test_align test_verifier_log test_dev_cgroup test_tcpbpf_user \
24 test_sock test_btf test_sockmap test_lirc_mode2_user get_cgroup_id_user \
25 test_socket_cookie test_cgroup_storage test_select_reuseport test_section_names \
26 test_netcnt test_tcpnotify_user test_sock_fields
28 BPF_OBJ_FILES = $(patsubst %.c,%.o, $(notdir $(wildcard progs/*.c)))
29 TEST_GEN_FILES = $(BPF_OBJ_FILES)
31 # Also test sub-register code-gen if LLVM has eBPF v3 processor support which
32 # contains both ALU32 and JMP32 instructions.
33 SUBREG_CODEGEN := $(shell echo "int cal(int a) { return a > 0; }" | \
34 $(CLANG) -target bpf -O2 -emit-llvm -S -x c - -o - | \
35 $(LLC) -mattr=+alu32 -mcpu=v3 2>&1 | \
37 ifneq ($(SUBREG_CODEGEN),)
38 TEST_GEN_FILES += $(patsubst %.o,alu32/%.o, $(BPF_OBJ_FILES))
41 # Order correspond to 'make run_tests' order
42 TEST_PROGS := test_kmod.sh \
44 test_xdp_redirect.sh \
49 test_lwt_seg6local.sh \
51 test_skb_cgroup_id.sh \
52 test_flow_dissector.sh \
54 test_lwt_ip_encap.sh \
55 test_tcp_check_syncookie.sh \
59 TEST_PROGS_EXTENDED := with_addr.sh \
64 # Compile but not part of 'make run_tests'
65 TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr test_skb_cgroup_id_user \
66 flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user
70 # NOTE: $(OUTPUT) won't get default value if used before lib.mk
71 TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read
72 all: $(TEST_CUSTOM_PROGS)
74 $(OUTPUT)/urandom_read: $(OUTPUT)/%: %.c
75 $(CC) -o $@ $< -Wl,--build-id
77 BPFOBJ := $(OUTPUT)/libbpf.a
79 $(TEST_GEN_PROGS): $(BPFOBJ)
81 $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/libbpf.a
83 $(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
84 $(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c
85 $(OUTPUT)/test_sock: cgroup_helpers.c
86 $(OUTPUT)/test_sock_addr: cgroup_helpers.c
87 $(OUTPUT)/test_socket_cookie: cgroup_helpers.c
88 $(OUTPUT)/test_sockmap: cgroup_helpers.c
89 $(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c
90 $(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c
91 $(OUTPUT)/test_progs: trace_helpers.c
92 $(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
93 $(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
94 $(OUTPUT)/test_netcnt: cgroup_helpers.c
95 $(OUTPUT)/test_sock_fields: cgroup_helpers.c
99 # force a rebuild of BPFOBJ when its dependencies are updated
103 $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/
105 PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1)
107 # Let newer LLVM versions transparently probe the kernel for availability
108 # of full BPF instruction set.
115 # Get Clang's default includes on this system, as opposed to those seen by
116 # '-target bpf'. This fixes "missing" files on some architectures/distros,
117 # such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
119 # Use '-idirafter': Don't interfere with include mechanics except where the
120 # build would have failed anyways.
121 CLANG_SYS_INCLUDES := $(shell $(CLANG) -v -E - </dev/null 2>&1 \
122 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }')
124 CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \
125 $(CLANG_SYS_INCLUDES) \
126 -Wno-compare-distinct-pointer-types
128 $(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline
129 $(OUTPUT)/test_xdp_noinline.o: CLANG_FLAGS += -fno-inline
131 $(OUTPUT)/test_queue_map.o: test_queue_stack_map.h
132 $(OUTPUT)/test_stack_map.o: test_queue_stack_map.h
134 $(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
135 $(OUTPUT)/test_progs.o: flow_dissector_load.h
137 BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris)
138 BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF)
139 BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm')
140 BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \
141 $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \
142 $(LLVM_READELF) -S ./llvm_btf_verify.o | grep BTF; \
143 /bin/rm -f ./llvm_btf_verify.o)
145 ifneq ($(BTF_LLVM_PROBE),)
148 ifneq ($(BTF_LLC_PROBE),)
149 ifneq ($(BTF_PAHOLE_PROBE),)
150 ifneq ($(BTF_OBJCOPY_PROBE),)
152 LLC_FLAGS += -mattr=dwarfris
159 TEST_PROGS_CFLAGS := -I. -I$(OUTPUT)
160 TEST_VERIFIER_CFLAGS := -I. -I$(OUTPUT) -Iverifier
162 ifneq ($(SUBREG_CODEGEN),)
163 ALU32_BUILD_DIR = $(OUTPUT)/alu32
164 TEST_CUSTOM_PROGS += $(ALU32_BUILD_DIR)/test_progs_32
168 $(ALU32_BUILD_DIR)/urandom_read: $(OUTPUT)/urandom_read
171 $(ALU32_BUILD_DIR)/test_progs_32: test_progs.c $(OUTPUT)/libbpf.a\
173 $(ALU32_BUILD_DIR)/urandom_read
174 $(CC) $(TEST_PROGS_CFLAGS) $(CFLAGS) \
175 -o $(ALU32_BUILD_DIR)/test_progs_32 \
176 test_progs.c trace_helpers.c prog_tests/*.c \
177 $(OUTPUT)/libbpf.a $(LDLIBS)
179 $(ALU32_BUILD_DIR)/test_progs_32: $(PROG_TESTS_H)
180 $(ALU32_BUILD_DIR)/test_progs_32: prog_tests/*.c
182 $(ALU32_BUILD_DIR)/%.o: progs/%.c $(ALU32_BUILD_DIR) \
183 $(ALU32_BUILD_DIR)/test_progs_32
184 $(CLANG) $(CLANG_FLAGS) \
185 -O2 -target bpf -emit-llvm -c $< -o - | \
186 $(LLC) -march=bpf -mattr=+alu32 -mcpu=$(CPU) $(LLC_FLAGS) \
188 ifeq ($(DWARF2BTF),y)
193 # Have one program compiled without "-target bpf" to test whether libbpf loads
195 $(OUTPUT)/test_xdp.o: progs/test_xdp.c
196 $(CLANG) $(CLANG_FLAGS) \
197 -O2 -emit-llvm -c $< -o - | \
198 $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
199 ifeq ($(DWARF2BTF),y)
203 $(OUTPUT)/%.o: progs/%.c
204 $(CLANG) $(CLANG_FLAGS) \
205 -O2 -target bpf -emit-llvm -c $< -o - | \
206 $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
207 ifeq ($(DWARF2BTF),y)
211 PROG_TESTS_H := $(OUTPUT)/prog_tests/tests.h
212 $(OUTPUT)/test_progs: $(PROG_TESTS_H)
213 $(OUTPUT)/test_progs: CFLAGS += $(TEST_PROGS_CFLAGS)
214 $(OUTPUT)/test_progs: prog_tests/*.c
216 PROG_TESTS_DIR = $(OUTPUT)/prog_tests
220 PROG_TESTS_FILES := $(wildcard prog_tests/*.c)
221 $(PROG_TESTS_H): $(PROG_TESTS_DIR) $(PROG_TESTS_FILES)
222 $(shell ( cd prog_tests/; \
223 echo '/* Generated header, do not edit */'; \
224 echo '#ifdef DECLARE'; \
225 ls *.c 2> /dev/null | \
226 sed -e 's@\([^\.]*\)\.c@extern void test_\1(void);@'; \
228 echo '#ifdef CALL'; \
229 ls *.c 2> /dev/null | \
230 sed -e 's@\([^\.]*\)\.c@test_\1();@'; \
234 VERIFIER_TESTS_H := $(OUTPUT)/verifier/tests.h
235 $(OUTPUT)/test_verifier: $(VERIFIER_TESTS_H)
236 $(OUTPUT)/test_verifier: CFLAGS += $(TEST_VERIFIER_CFLAGS)
238 VERIFIER_TESTS_DIR = $(OUTPUT)/verifier
239 $(VERIFIER_TESTS_DIR):
242 VERIFIER_TEST_FILES := $(wildcard verifier/*.c)
243 $(OUTPUT)/verifier/tests.h: $(VERIFIER_TESTS_DIR) $(VERIFIER_TEST_FILES)
244 $(shell ( cd verifier/; \
245 echo '/* Generated header, do not edit */'; \
246 echo '#ifdef FILL_ARRAY'; \
247 ls *.c 2> /dev/null | \
248 sed -e 's@\(.*\)@#include \"\1\"@'; \
250 ) > $(VERIFIER_TESTS_H))
252 EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(ALU32_BUILD_DIR) \
253 $(VERIFIER_TESTS_H) $(PROG_TESTS_H)