1# SPDX-License-Identifier: GPL-2.0 2 3LIBDIR := ../../../lib 4BPFDIR := $(LIBDIR)/bpf 5APIDIR := ../../../include/uapi 6GENDIR := ../../../../include/generated 7GENHDR := $(GENDIR)/autoconf.h 8 9ifneq ($(wildcard $(GENHDR)),) 10 GENFLAGS := -DHAVE_GENHDR 11endif 12 13CLANG ?= clang 14LLC ?= llc 15LLVM_OBJCOPY ?= llvm-objcopy 16LLVM_READELF ?= llvm-readelf 17BTF_PAHOLE ?= pahole 18CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(BPFDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include 19LDLIBS += -lcap -lelf -lrt -lpthread 20 21# Order correspond to 'make run_tests' order 22TEST_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 test_sysctl 27 28BPF_OBJ_FILES = $(patsubst %.c,%.o, $(notdir $(wildcard progs/*.c))) 29TEST_GEN_FILES = $(BPF_OBJ_FILES) 30 31# Also test sub-register code-gen if LLVM has eBPF v3 processor support which 32# contains both ALU32 and JMP32 instructions. 33SUBREG_CODEGEN := $(shell echo "int cal(int a) { return a > 0; }" | \ 34 $(CLANG) -target bpf -O2 -emit-llvm -S -x c - -o - | \ 35 $(LLC) -mattr=+alu32 -mcpu=v3 2>&1 | \ 36 grep 'if w') 37ifneq ($(SUBREG_CODEGEN),) 38TEST_GEN_FILES += $(patsubst %.o,alu32/%.o, $(BPF_OBJ_FILES)) 39endif 40 41# Order correspond to 'make run_tests' order 42TEST_PROGS := test_kmod.sh \ 43 test_libbpf.sh \ 44 test_xdp_redirect.sh \ 45 test_xdp_meta.sh \ 46 test_offload.py \ 47 test_sock_addr.sh \ 48 test_tunnel.sh \ 49 test_lwt_seg6local.sh \ 50 test_lirc_mode2.sh \ 51 test_skb_cgroup_id.sh \ 52 test_flow_dissector.sh \ 53 test_xdp_vlan.sh \ 54 test_lwt_ip_encap.sh \ 55 test_tcp_check_syncookie.sh \ 56 test_tc_tunnel.sh \ 57 test_tc_edt.sh 58 59TEST_PROGS_EXTENDED := with_addr.sh \ 60 with_tunnels.sh \ 61 tcp_client.py \ 62 tcp_server.py 63 64# Compile but not part of 'make run_tests' 65TEST_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 67 68include ../lib.mk 69 70# NOTE: $(OUTPUT) won't get default value if used before lib.mk 71TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read 72all: $(TEST_CUSTOM_PROGS) 73 74$(OUTPUT)/urandom_read: $(OUTPUT)/%: %.c 75 $(CC) -o $@ $< -Wl,--build-id 76 77$(OUTPUT)/test_maps: map_tests/*.c 78 79BPFOBJ := $(OUTPUT)/libbpf.a 80 81$(TEST_GEN_PROGS): $(BPFOBJ) 82 83$(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/libbpf.a 84 85$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c 86$(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c 87$(OUTPUT)/test_sock: cgroup_helpers.c 88$(OUTPUT)/test_sock_addr: cgroup_helpers.c 89$(OUTPUT)/test_socket_cookie: cgroup_helpers.c 90$(OUTPUT)/test_sockmap: cgroup_helpers.c 91$(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c 92$(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c 93$(OUTPUT)/test_progs: trace_helpers.c 94$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c 95$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c 96$(OUTPUT)/test_netcnt: cgroup_helpers.c 97$(OUTPUT)/test_sock_fields: cgroup_helpers.c 98$(OUTPUT)/test_sysctl: cgroup_helpers.c 99 100.PHONY: force 101 102# force a rebuild of BPFOBJ when its dependencies are updated 103force: 104 105$(BPFOBJ): force 106 $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/ 107 108PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1) 109 110# Let newer LLVM versions transparently probe the kernel for availability 111# of full BPF instruction set. 112ifeq ($(PROBE),) 113 CPU ?= probe 114else 115 CPU ?= generic 116endif 117 118# Get Clang's default includes on this system, as opposed to those seen by 119# '-target bpf'. This fixes "missing" files on some architectures/distros, 120# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 121# 122# Use '-idirafter': Don't interfere with include mechanics except where the 123# build would have failed anyways. 124CLANG_SYS_INCLUDES := $(shell $(CLANG) -v -E - </dev/null 2>&1 \ 125 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') 126 127CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \ 128 $(CLANG_SYS_INCLUDES) \ 129 -Wno-compare-distinct-pointer-types 130 131$(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline 132$(OUTPUT)/test_xdp_noinline.o: CLANG_FLAGS += -fno-inline 133 134$(OUTPUT)/test_queue_map.o: test_queue_stack_map.h 135$(OUTPUT)/test_stack_map.o: test_queue_stack_map.h 136 137$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h 138$(OUTPUT)/test_progs.o: flow_dissector_load.h 139 140BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris) 141BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF) 142BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm') 143BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \ 144 $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \ 145 $(LLVM_READELF) -S ./llvm_btf_verify.o | grep BTF; \ 146 /bin/rm -f ./llvm_btf_verify.o) 147 148ifneq ($(BTF_LLVM_PROBE),) 149 CLANG_FLAGS += -g 150else 151ifneq ($(BTF_LLC_PROBE),) 152ifneq ($(BTF_PAHOLE_PROBE),) 153ifneq ($(BTF_OBJCOPY_PROBE),) 154 CLANG_FLAGS += -g 155 LLC_FLAGS += -mattr=dwarfris 156 DWARF2BTF = y 157endif 158endif 159endif 160endif 161 162TEST_PROGS_CFLAGS := -I. -I$(OUTPUT) 163TEST_VERIFIER_CFLAGS := -I. -I$(OUTPUT) -Iverifier 164 165ifneq ($(SUBREG_CODEGEN),) 166ALU32_BUILD_DIR = $(OUTPUT)/alu32 167TEST_CUSTOM_PROGS += $(ALU32_BUILD_DIR)/test_progs_32 168$(ALU32_BUILD_DIR): 169 mkdir -p $@ 170 171$(ALU32_BUILD_DIR)/urandom_read: $(OUTPUT)/urandom_read 172 cp $< $@ 173 174$(ALU32_BUILD_DIR)/test_progs_32: test_progs.c $(OUTPUT)/libbpf.a\ 175 $(ALU32_BUILD_DIR) \ 176 $(ALU32_BUILD_DIR)/urandom_read 177 $(CC) $(TEST_PROGS_CFLAGS) $(CFLAGS) \ 178 -o $(ALU32_BUILD_DIR)/test_progs_32 \ 179 test_progs.c trace_helpers.c prog_tests/*.c \ 180 $(OUTPUT)/libbpf.a $(LDLIBS) 181 182$(ALU32_BUILD_DIR)/test_progs_32: $(PROG_TESTS_H) 183$(ALU32_BUILD_DIR)/test_progs_32: prog_tests/*.c 184 185$(ALU32_BUILD_DIR)/%.o: progs/%.c $(ALU32_BUILD_DIR) \ 186 $(ALU32_BUILD_DIR)/test_progs_32 187 $(CLANG) $(CLANG_FLAGS) \ 188 -O2 -target bpf -emit-llvm -c $< -o - | \ 189 $(LLC) -march=bpf -mattr=+alu32 -mcpu=$(CPU) $(LLC_FLAGS) \ 190 -filetype=obj -o $@ 191ifeq ($(DWARF2BTF),y) 192 $(BTF_PAHOLE) -J $@ 193endif 194endif 195 196# Have one program compiled without "-target bpf" to test whether libbpf loads 197# it successfully 198$(OUTPUT)/test_xdp.o: progs/test_xdp.c 199 $(CLANG) $(CLANG_FLAGS) \ 200 -O2 -emit-llvm -c $< -o - | \ 201 $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@ 202ifeq ($(DWARF2BTF),y) 203 $(BTF_PAHOLE) -J $@ 204endif 205 206$(OUTPUT)/%.o: progs/%.c 207 $(CLANG) $(CLANG_FLAGS) \ 208 -O2 -target bpf -emit-llvm -c $< -o - | \ 209 $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@ 210ifeq ($(DWARF2BTF),y) 211 $(BTF_PAHOLE) -J $@ 212endif 213 214PROG_TESTS_H := $(OUTPUT)/prog_tests/tests.h 215test_progs.c: $(PROG_TESTS_H) 216$(OUTPUT)/test_progs: CFLAGS += $(TEST_PROGS_CFLAGS) 217$(OUTPUT)/test_progs: prog_tests/*.c 218 219PROG_TESTS_DIR = $(OUTPUT)/prog_tests 220$(PROG_TESTS_DIR): 221 mkdir -p $@ 222 223PROG_TESTS_FILES := $(wildcard prog_tests/*.c) 224$(PROG_TESTS_H): $(PROG_TESTS_DIR) $(PROG_TESTS_FILES) 225 $(shell ( cd prog_tests/; \ 226 echo '/* Generated header, do not edit */'; \ 227 echo '#ifdef DECLARE'; \ 228 ls *.c 2> /dev/null | \ 229 sed -e 's@\([^\.]*\)\.c@extern void test_\1(void);@'; \ 230 echo '#endif'; \ 231 echo '#ifdef CALL'; \ 232 ls *.c 2> /dev/null | \ 233 sed -e 's@\([^\.]*\)\.c@test_\1();@'; \ 234 echo '#endif' \ 235 ) > $(PROG_TESTS_H)) 236 237TEST_MAPS_CFLAGS := -I. -I$(OUTPUT) 238MAP_TESTS_DIR = $(OUTPUT)/map_tests 239$(MAP_TESTS_DIR): 240 mkdir -p $@ 241MAP_TESTS_H := $(MAP_TESTS_DIR)/tests.h 242test_maps.c: $(MAP_TESTS_H) 243$(OUTPUT)/test_maps: CFLAGS += $(TEST_MAPS_CFLAGS) 244MAP_TESTS_FILES := $(wildcard map_tests/*.c) 245$(MAP_TESTS_H): $(MAP_TESTS_DIR) $(MAP_TESTS_FILES) 246 $(shell ( cd map_tests/; \ 247 echo '/* Generated header, do not edit */'; \ 248 echo '#ifdef DECLARE'; \ 249 ls *.c 2> /dev/null | \ 250 sed -e 's@\([^\.]*\)\.c@extern void test_\1(void);@'; \ 251 echo '#endif'; \ 252 echo '#ifdef CALL'; \ 253 ls *.c 2> /dev/null | \ 254 sed -e 's@\([^\.]*\)\.c@test_\1();@'; \ 255 echo '#endif' \ 256 ) > $(MAP_TESTS_H)) 257 258VERIFIER_TESTS_H := $(OUTPUT)/verifier/tests.h 259test_verifier.c: $(VERIFIER_TESTS_H) 260$(OUTPUT)/test_verifier: CFLAGS += $(TEST_VERIFIER_CFLAGS) 261 262VERIFIER_TESTS_DIR = $(OUTPUT)/verifier 263$(VERIFIER_TESTS_DIR): 264 mkdir -p $@ 265 266VERIFIER_TEST_FILES := $(wildcard verifier/*.c) 267$(OUTPUT)/verifier/tests.h: $(VERIFIER_TESTS_DIR) $(VERIFIER_TEST_FILES) 268 $(shell ( cd verifier/; \ 269 echo '/* Generated header, do not edit */'; \ 270 echo '#ifdef FILL_ARRAY'; \ 271 ls *.c 2> /dev/null | \ 272 sed -e 's@\(.*\)@#include \"\1\"@'; \ 273 echo '#endif' \ 274 ) > $(VERIFIER_TESTS_H)) 275 276EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(ALU32_BUILD_DIR) \ 277 $(VERIFIER_TESTS_H) $(PROG_TESTS_H) $(MAP_TESTS_H) 278