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
29 test_xdp_redirect.o test_xdp_meta.o sockmap_parse_prog.o \
30 sockmap_verdict_prog.o dev_cgroup.o sample_ret0.o \
31 test_tcpnotify_kern.o sample_map_ret0.o test_tcpbpf_kern.o \
32 sockmap_tcp_msg_prog.o connect4_prog.o connect6_prog.o \
33 test_btf_haskv.o test_btf_nokv.o test_sockmap_kern.o \
34 test_tunnel_kern.o test_sockhash_kern.o test_lwt_seg6local.o \
35 sendmsg4_prog.o sendmsg6_prog.o test_lirc_mode2_kern.o \
36 get_cgroup_id_kern.o socket_cookie_prog.o test_select_reuseport_kern.o \
37 test_skb_cgroup_id_kern.o bpf_flow.o netcnt_prog.o test_xdp_vlan.o \
38 xdp_dummy.o test_map_in_map.o
40 # Objects are built with default compilation flags and with sub-register
42 BPF_OBJ_FILES_DUAL_COMPILE = \
43 test_pkt_access.o test_pkt_access.o test_xdp.o test_adjust_tail.o \
44 test_l4lb.o test_l4lb_noinline.o test_xdp_noinline.o test_tcp_estats.o \
45 test_obj_id.o test_pkt_md_access.o test_tracepoint.o \
46 test_stacktrace_map.o test_stacktrace_map.o test_stacktrace_build_id.o \
47 test_stacktrace_build_id.o test_get_stack_rawtp.o \
48 test_get_stack_rawtp.o test_tracepoint.o test_sk_lookup_kern.o \
49 test_queue_map.o test_stack_map.o
51 TEST_GEN_FILES = $(BPF_OBJ_FILES) $(BPF_OBJ_FILES_DUAL_COMPILE)
53 # Also test sub-register code-gen if LLVM + kernel both has eBPF v3 processor
54 # support which is the first version to contain both ALU32 and JMP32
56 SUBREG_CODEGEN := $(shell echo "int cal(int a) { return a > 0; }" | \
57 $(CLANG) -target bpf -O2 -emit-llvm -S -x c - -o - | \
58 $(LLC) -mattr=+alu32 -mcpu=probe 2>&1 | \
60 ifneq ($(SUBREG_CODEGEN),)
61 TEST_GEN_FILES += $(patsubst %.o,alu32/%.o, $(BPF_OBJ_FILES_DUAL_COMPILE))
64 # Order correspond to 'make run_tests' order
65 TEST_PROGS := test_kmod.sh \
67 test_xdp_redirect.sh \
72 test_lwt_seg6local.sh \
74 test_skb_cgroup_id.sh \
75 test_flow_dissector.sh \
78 TEST_PROGS_EXTENDED := with_addr.sh \
82 # Compile but not part of 'make run_tests'
83 TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr test_skb_cgroup_id_user \
84 flow_dissector_load test_flow_dissector
88 # NOTE: $(OUTPUT) won't get default value if used before lib.mk
89 TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read
90 all: $(TEST_CUSTOM_PROGS)
92 $(OUTPUT)/urandom_read: $(OUTPUT)/%: %.c
93 $(CC) -o $@ -static $< -Wl,--build-id
95 BPFOBJ := $(OUTPUT)/libbpf.a
97 $(TEST_GEN_PROGS): $(BPFOBJ)
99 $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/libbpf.a
101 $(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
102 $(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c
103 $(OUTPUT)/test_sock: cgroup_helpers.c
104 $(OUTPUT)/test_sock_addr: cgroup_helpers.c
105 $(OUTPUT)/test_socket_cookie: cgroup_helpers.c
106 $(OUTPUT)/test_sockmap: cgroup_helpers.c
107 $(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c
108 $(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c
109 $(OUTPUT)/test_progs: trace_helpers.c
110 $(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
111 $(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
112 $(OUTPUT)/test_netcnt: cgroup_helpers.c
116 # force a rebuild of BPFOBJ when its dependencies are updated
120 $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/
122 PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1)
124 # Let newer LLVM versions transparently probe the kernel for availability
125 # of full BPF instruction set.
132 # Get Clang's default includes on this system, as opposed to those seen by
133 # '-target bpf'. This fixes "missing" files on some architectures/distros,
134 # such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
136 # Use '-idirafter': Don't interfere with include mechanics except where the
137 # build would have failed anyways.
138 CLANG_SYS_INCLUDES := $(shell $(CLANG) -v -E - </dev/null 2>&1 \
139 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }')
141 CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \
142 $(CLANG_SYS_INCLUDES) \
143 -Wno-compare-distinct-pointer-types
145 $(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline
146 $(OUTPUT)/test_xdp_noinline.o: CLANG_FLAGS += -fno-inline
148 $(OUTPUT)/test_queue_map.o: test_queue_stack_map.h
149 $(OUTPUT)/test_stack_map.o: test_queue_stack_map.h
151 BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris)
152 BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF)
153 BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm')
154 BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \
155 $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \
156 $(LLVM_READELF) -S ./llvm_btf_verify.o | grep BTF; \
157 /bin/rm -f ./llvm_btf_verify.o)
159 ifneq ($(BTF_LLVM_PROBE),)
162 ifneq ($(BTF_LLC_PROBE),)
163 ifneq ($(BTF_PAHOLE_PROBE),)
164 ifneq ($(BTF_OBJCOPY_PROBE),)
166 LLC_FLAGS += -mattr=dwarfris
173 ifneq ($(SUBREG_CODEGEN),)
174 ALU32_BUILD_DIR = $(OUTPUT)/alu32
175 TEST_CUSTOM_PROGS += $(ALU32_BUILD_DIR)/test_progs_32
179 $(ALU32_BUILD_DIR)/urandom_read: $(OUTPUT)/urandom_read
182 $(ALU32_BUILD_DIR)/test_progs_32: test_progs.c $(ALU32_BUILD_DIR) \
183 $(ALU32_BUILD_DIR)/urandom_read
184 $(CC) $(CFLAGS) -o $(ALU32_BUILD_DIR)/test_progs_32 $< \
185 trace_helpers.c $(OUTPUT)/libbpf.a $(LDLIBS)
187 $(ALU32_BUILD_DIR)/%.o: %.c $(ALU32_BUILD_DIR) $(ALU32_BUILD_DIR)/test_progs_32
188 $(CLANG) $(CLANG_FLAGS) \
189 -O2 -target bpf -emit-llvm -c $< -o - | \
190 $(LLC) -march=bpf -mattr=+alu32 -mcpu=$(CPU) $(LLC_FLAGS) \
192 ifeq ($(DWARF2BTF),y)
197 # Have one program compiled without "-target bpf" to test whether libbpf loads
199 $(OUTPUT)/test_xdp.o: test_xdp.c
200 $(CLANG) $(CLANG_FLAGS) \
201 -O2 -emit-llvm -c $< -o - | \
202 $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
203 ifeq ($(DWARF2BTF),y)
208 $(CLANG) $(CLANG_FLAGS) \
209 -O2 -target bpf -emit-llvm -c $< -o - | \
210 $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
211 ifeq ($(DWARF2BTF),y)
215 EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(ALU32_BUILD_DIR)