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 test_hashmap \ 27 test_btf_dump 28 29BPF_OBJ_FILES = $(patsubst %.c,%.o, $(notdir $(wildcard progs/*.c))) 30TEST_GEN_FILES = $(BPF_OBJ_FILES) 31 32# Also test sub-register code-gen if LLVM has eBPF v3 processor support which 33# contains both ALU32 and JMP32 instructions. 34SUBREG_CODEGEN := $(shell echo "int cal(int a) { return a > 0; }" | \ 35 $(CLANG) -target bpf -O2 -emit-llvm -S -x c - -o - | \ 36 $(LLC) -mattr=+alu32 -mcpu=v3 2>&1 | \ 37 grep 'if w') 38ifneq ($(SUBREG_CODEGEN),) 39TEST_GEN_FILES += $(patsubst %.o,alu32/%.o, $(BPF_OBJ_FILES)) 40endif 41 42# Order correspond to 'make run_tests' order 43TEST_PROGS := test_kmod.sh \ 44 test_libbpf.sh \ 45 test_xdp_redirect.sh \ 46 test_xdp_meta.sh \ 47 test_offload.py \ 48 test_sock_addr.sh \ 49 test_tunnel.sh \ 50 test_lwt_seg6local.sh \ 51 test_lirc_mode2.sh \ 52 test_skb_cgroup_id.sh \ 53 test_flow_dissector.sh \ 54 test_xdp_vlan.sh \ 55 test_lwt_ip_encap.sh \ 56 test_tcp_check_syncookie.sh \ 57 test_tc_tunnel.sh \ 58 test_tc_edt.sh 59 60TEST_PROGS_EXTENDED := with_addr.sh \ 61 with_tunnels.sh \ 62 tcp_client.py \ 63 tcp_server.py 64 65# Compile but not part of 'make run_tests' 66TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr test_skb_cgroup_id_user \ 67 flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user 68 69include ../lib.mk 70 71# NOTE: $(OUTPUT) won't get default value if used before lib.mk 72TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read 73all: $(TEST_CUSTOM_PROGS) 74 75$(OUTPUT)/urandom_read: $(OUTPUT)/%: %.c 76 $(CC) -o $@ $< -Wl,--build-id 77 78$(OUTPUT)/test_maps: map_tests/*.c 79 80BPFOBJ := $(OUTPUT)/libbpf.a 81 82$(TEST_GEN_PROGS): $(BPFOBJ) 83 84$(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/libbpf.a 85 86$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c 87$(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c 88$(OUTPUT)/test_sock: cgroup_helpers.c 89$(OUTPUT)/test_sock_addr: cgroup_helpers.c 90$(OUTPUT)/test_socket_cookie: cgroup_helpers.c 91$(OUTPUT)/test_sockmap: cgroup_helpers.c 92$(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c 93$(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c 94$(OUTPUT)/test_progs: trace_helpers.c 95$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c 96$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c 97$(OUTPUT)/test_netcnt: cgroup_helpers.c 98$(OUTPUT)/test_sock_fields: cgroup_helpers.c 99$(OUTPUT)/test_sysctl: cgroup_helpers.c 100 101.PHONY: force 102 103# force a rebuild of BPFOBJ when its dependencies are updated 104force: 105 106$(BPFOBJ): force 107 $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/ 108 109PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1) 110 111# Let newer LLVM versions transparently probe the kernel for availability 112# of full BPF instruction set. 113ifeq ($(PROBE),) 114 CPU ?= probe 115else 116 CPU ?= generic 117endif 118 119# Get Clang's default includes on this system, as opposed to those seen by 120# '-target bpf'. This fixes "missing" files on some architectures/distros, 121# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 122# 123# Use '-idirafter': Don't interfere with include mechanics except where the 124# build would have failed anyways. 125CLANG_SYS_INCLUDES := $(shell $(CLANG) -v -E - </dev/null 2>&1 \ 126 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') 127 128CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \ 129 $(CLANG_SYS_INCLUDES) \ 130 -Wno-compare-distinct-pointer-types 131 132$(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline 133$(OUTPUT)/test_xdp_noinline.o: CLANG_FLAGS += -fno-inline 134 135$(OUTPUT)/test_queue_map.o: test_queue_stack_map.h 136$(OUTPUT)/test_stack_map.o: test_queue_stack_map.h 137 138$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h 139$(OUTPUT)/test_progs.o: flow_dissector_load.h 140 141BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris) 142BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF) 143BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm') 144BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \ 145 $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \ 146 $(LLVM_READELF) -S ./llvm_btf_verify.o | grep BTF; \ 147 /bin/rm -f ./llvm_btf_verify.o) 148 149ifneq ($(BTF_LLVM_PROBE),) 150 CLANG_FLAGS += -g 151else 152ifneq ($(BTF_LLC_PROBE),) 153ifneq ($(BTF_PAHOLE_PROBE),) 154ifneq ($(BTF_OBJCOPY_PROBE),) 155 CLANG_FLAGS += -g 156 LLC_FLAGS += -mattr=dwarfris 157 DWARF2BTF = y 158endif 159endif 160endif 161endif 162 163TEST_PROGS_CFLAGS := -I. -I$(OUTPUT) 164TEST_VERIFIER_CFLAGS := -I. -I$(OUTPUT) -Iverifier 165 166ifneq ($(SUBREG_CODEGEN),) 167ALU32_BUILD_DIR = $(OUTPUT)/alu32 168TEST_CUSTOM_PROGS += $(ALU32_BUILD_DIR)/test_progs_32 169$(ALU32_BUILD_DIR): 170 mkdir -p $@ 171 172$(ALU32_BUILD_DIR)/urandom_read: $(OUTPUT)/urandom_read 173 cp $< $@ 174 175$(ALU32_BUILD_DIR)/test_progs_32: test_progs.c $(OUTPUT)/libbpf.a\ 176 $(ALU32_BUILD_DIR) \ 177 $(ALU32_BUILD_DIR)/urandom_read 178 $(CC) $(TEST_PROGS_CFLAGS) $(CFLAGS) \ 179 -o $(ALU32_BUILD_DIR)/test_progs_32 \ 180 test_progs.c trace_helpers.c prog_tests/*.c \ 181 $(OUTPUT)/libbpf.a $(LDLIBS) 182 183$(ALU32_BUILD_DIR)/test_progs_32: $(PROG_TESTS_H) 184$(ALU32_BUILD_DIR)/test_progs_32: prog_tests/*.c 185 186$(ALU32_BUILD_DIR)/%.o: progs/%.c $(ALU32_BUILD_DIR) \ 187 $(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) \ 191 -filetype=obj -o $@ 192ifeq ($(DWARF2BTF),y) 193 $(BTF_PAHOLE) -J $@ 194endif 195endif 196 197# Have one program compiled without "-target bpf" to test whether libbpf loads 198# it successfully 199$(OUTPUT)/test_xdp.o: progs/test_xdp.c 200 $(CLANG) $(CLANG_FLAGS) \ 201 -O2 -emit-llvm -c $< -o - | \ 202 $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@ 203ifeq ($(DWARF2BTF),y) 204 $(BTF_PAHOLE) -J $@ 205endif 206 207$(OUTPUT)/%.o: progs/%.c 208 $(CLANG) $(CLANG_FLAGS) \ 209 -O2 -target bpf -emit-llvm -c $< -o - | \ 210 $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@ 211ifeq ($(DWARF2BTF),y) 212 $(BTF_PAHOLE) -J $@ 213endif 214 215PROG_TESTS_H := $(OUTPUT)/prog_tests/tests.h 216test_progs.c: $(PROG_TESTS_H) 217$(OUTPUT)/test_progs: CFLAGS += $(TEST_PROGS_CFLAGS) 218$(OUTPUT)/test_progs: prog_tests/*.c 219 220PROG_TESTS_DIR = $(OUTPUT)/prog_tests 221$(PROG_TESTS_DIR): 222 mkdir -p $@ 223 224PROG_TESTS_FILES := $(wildcard prog_tests/*.c) 225$(PROG_TESTS_H): $(PROG_TESTS_DIR) $(PROG_TESTS_FILES) 226 $(shell ( cd prog_tests/; \ 227 echo '/* Generated header, do not edit */'; \ 228 echo '#ifdef DECLARE'; \ 229 ls *.c 2> /dev/null | \ 230 sed -e 's@\([^\.]*\)\.c@extern void test_\1(void);@'; \ 231 echo '#endif'; \ 232 echo '#ifdef CALL'; \ 233 ls *.c 2> /dev/null | \ 234 sed -e 's@\([^\.]*\)\.c@test_\1();@'; \ 235 echo '#endif' \ 236 ) > $(PROG_TESTS_H)) 237 238TEST_MAPS_CFLAGS := -I. -I$(OUTPUT) 239MAP_TESTS_DIR = $(OUTPUT)/map_tests 240$(MAP_TESTS_DIR): 241 mkdir -p $@ 242MAP_TESTS_H := $(MAP_TESTS_DIR)/tests.h 243test_maps.c: $(MAP_TESTS_H) 244$(OUTPUT)/test_maps: CFLAGS += $(TEST_MAPS_CFLAGS) 245MAP_TESTS_FILES := $(wildcard map_tests/*.c) 246$(MAP_TESTS_H): $(MAP_TESTS_DIR) $(MAP_TESTS_FILES) 247 $(shell ( cd map_tests/; \ 248 echo '/* Generated header, do not edit */'; \ 249 echo '#ifdef DECLARE'; \ 250 ls *.c 2> /dev/null | \ 251 sed -e 's@\([^\.]*\)\.c@extern void test_\1(void);@'; \ 252 echo '#endif'; \ 253 echo '#ifdef CALL'; \ 254 ls *.c 2> /dev/null | \ 255 sed -e 's@\([^\.]*\)\.c@test_\1();@'; \ 256 echo '#endif' \ 257 ) > $(MAP_TESTS_H)) 258 259VERIFIER_TESTS_H := $(OUTPUT)/verifier/tests.h 260test_verifier.c: $(VERIFIER_TESTS_H) 261$(OUTPUT)/test_verifier: CFLAGS += $(TEST_VERIFIER_CFLAGS) 262 263VERIFIER_TESTS_DIR = $(OUTPUT)/verifier 264$(VERIFIER_TESTS_DIR): 265 mkdir -p $@ 266 267VERIFIER_TEST_FILES := $(wildcard verifier/*.c) 268$(OUTPUT)/verifier/tests.h: $(VERIFIER_TESTS_DIR) $(VERIFIER_TEST_FILES) 269 $(shell ( cd verifier/; \ 270 echo '/* Generated header, do not edit */'; \ 271 echo '#ifdef FILL_ARRAY'; \ 272 ls *.c 2> /dev/null | \ 273 sed -e 's@\(.*\)@#include \"\1\"@'; \ 274 echo '#endif' \ 275 ) > $(VERIFIER_TESTS_H)) 276 277EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(ALU32_BUILD_DIR) \ 278 $(VERIFIER_TESTS_H) $(PROG_TESTS_H) $(MAP_TESTS_H) 279