1# SPDX-License-Identifier: GPL-2.0 2include ../../../../scripts/Kbuild.include 3include ../../../scripts/Makefile.arch 4 5LIBDIR := ../../../lib 6BPFDIR := $(LIBDIR)/bpf 7APIDIR := ../../../include/uapi 8GENDIR := ../../../../include/generated 9GENHDR := $(GENDIR)/autoconf.h 10 11ifneq ($(wildcard $(GENHDR)),) 12 GENFLAGS := -DHAVE_GENHDR 13endif 14 15CLANG ?= clang 16LLC ?= llc 17LLVM_OBJCOPY ?= llvm-objcopy 18LLVM_READELF ?= llvm-readelf 19BTF_PAHOLE ?= pahole 20CFLAGS += -g -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(BPFDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include \ 21 -Dbpf_prog_load=bpf_prog_test_load \ 22 -Dbpf_load_program=bpf_test_load_program 23LDLIBS += -lcap -lelf -lrt -lpthread 24 25# Order correspond to 'make run_tests' order 26TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \ 27 test_align test_verifier_log test_dev_cgroup test_tcpbpf_user \ 28 test_sock test_btf test_sockmap get_cgroup_id_user test_socket_cookie \ 29 test_cgroup_storage test_select_reuseport test_section_names \ 30 test_netcnt test_tcpnotify_user test_sock_fields test_sysctl test_hashmap \ 31 test_btf_dump test_cgroup_attach xdping test_sockopt test_sockopt_sk \ 32 test_sockopt_multi test_sockopt_inherit test_tcp_rtt 33 34BPF_OBJ_FILES = $(patsubst %.c,%.o, $(notdir $(wildcard progs/*.c))) 35TEST_GEN_FILES = $(BPF_OBJ_FILES) 36 37BTF_C_FILES = $(wildcard progs/btf_dump_test_case_*.c) 38TEST_FILES = $(BTF_C_FILES) 39 40# Also test sub-register code-gen if LLVM has eBPF v3 processor support which 41# contains both ALU32 and JMP32 instructions. 42SUBREG_CODEGEN := $(shell echo "int cal(int a) { return a > 0; }" | \ 43 $(CLANG) -target bpf -O2 -emit-llvm -S -x c - -o - | \ 44 $(LLC) -mattr=+alu32 -mcpu=v3 2>&1 | \ 45 grep 'if w') 46ifneq ($(SUBREG_CODEGEN),) 47TEST_GEN_FILES += $(patsubst %.o,alu32/%.o, $(BPF_OBJ_FILES)) 48endif 49 50# Order correspond to 'make run_tests' order 51TEST_PROGS := test_kmod.sh \ 52 test_libbpf.sh \ 53 test_xdp_redirect.sh \ 54 test_xdp_meta.sh \ 55 test_xdp_veth.sh \ 56 test_offload.py \ 57 test_sock_addr.sh \ 58 test_tunnel.sh \ 59 test_lwt_seg6local.sh \ 60 test_lirc_mode2.sh \ 61 test_skb_cgroup_id.sh \ 62 test_flow_dissector.sh \ 63 test_xdp_vlan_mode_generic.sh \ 64 test_xdp_vlan_mode_native.sh \ 65 test_lwt_ip_encap.sh \ 66 test_tcp_check_syncookie.sh \ 67 test_tc_tunnel.sh \ 68 test_tc_edt.sh \ 69 test_xdping.sh \ 70 test_bpftool_build.sh 71 72TEST_PROGS_EXTENDED := with_addr.sh \ 73 with_tunnels.sh \ 74 tcp_client.py \ 75 tcp_server.py \ 76 test_xdp_vlan.sh 77 78# Compile but not part of 'make run_tests' 79TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr test_skb_cgroup_id_user \ 80 flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \ 81 test_lirc_mode2_user 82 83include ../lib.mk 84 85# NOTE: $(OUTPUT) won't get default value if used before lib.mk 86TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read 87all: $(TEST_CUSTOM_PROGS) 88 89$(OUTPUT)/urandom_read: $(OUTPUT)/%: %.c 90 $(CC) -o $@ $< -Wl,--build-id 91 92$(OUTPUT)/test_stub.o: test_stub.c 93 $(CC) $(TEST_PROGS_CFLAGS) $(CFLAGS) -c -o $@ $< 94 95BPFOBJ := $(OUTPUT)/libbpf.a 96 97$(TEST_GEN_PROGS): $(OUTPUT)/test_stub.o $(BPFOBJ) 98 99$(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(OUTPUT)/libbpf.a 100 101$(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$(OUTPUT)/test_netcnt: cgroup_helpers.c 113$(OUTPUT)/test_sock_fields: cgroup_helpers.c 114$(OUTPUT)/test_sysctl: cgroup_helpers.c 115$(OUTPUT)/test_cgroup_attach: cgroup_helpers.c 116$(OUTPUT)/test_sockopt: cgroup_helpers.c 117$(OUTPUT)/test_sockopt_sk: cgroup_helpers.c 118$(OUTPUT)/test_sockopt_multi: cgroup_helpers.c 119$(OUTPUT)/test_sockopt_inherit: cgroup_helpers.c 120$(OUTPUT)/test_tcp_rtt: cgroup_helpers.c 121 122.PHONY: force 123 124# force a rebuild of BPFOBJ when its dependencies are updated 125force: 126 127$(BPFOBJ): force 128 $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/ 129 130PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1) 131 132# Let newer LLVM versions transparently probe the kernel for availability 133# of full BPF instruction set. 134ifeq ($(PROBE),) 135 CPU ?= probe 136else 137 CPU ?= generic 138endif 139 140# Get Clang's default includes on this system, as opposed to those seen by 141# '-target bpf'. This fixes "missing" files on some architectures/distros, 142# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 143# 144# Use '-idirafter': Don't interfere with include mechanics except where the 145# build would have failed anyways. 146CLANG_SYS_INCLUDES := $(shell $(CLANG) -v -E - </dev/null 2>&1 \ 147 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') 148 149CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \ 150 $(CLANG_SYS_INCLUDES) \ 151 -Wno-compare-distinct-pointer-types \ 152 -D__TARGET_ARCH_$(SRCARCH) 153 154$(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline 155$(OUTPUT)/test_xdp_noinline.o: CLANG_FLAGS += -fno-inline 156 157$(OUTPUT)/test_queue_map.o: test_queue_stack_map.h 158$(OUTPUT)/test_stack_map.o: test_queue_stack_map.h 159 160$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h 161$(OUTPUT)/test_progs.o: flow_dissector_load.h 162 163BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris) 164BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF) 165BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm') 166BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \ 167 $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \ 168 $(LLVM_READELF) -S ./llvm_btf_verify.o | grep BTF; \ 169 /bin/rm -f ./llvm_btf_verify.o) 170 171ifneq ($(BTF_LLVM_PROBE),) 172 CLANG_FLAGS += -g 173else 174ifneq ($(BTF_LLC_PROBE),) 175ifneq ($(BTF_PAHOLE_PROBE),) 176ifneq ($(BTF_OBJCOPY_PROBE),) 177 CLANG_FLAGS += -g 178 LLC_FLAGS += -mattr=dwarfris 179 DWARF2BTF = y 180endif 181endif 182endif 183endif 184 185TEST_PROGS_CFLAGS := -I. -I$(OUTPUT) 186TEST_MAPS_CFLAGS := -I. -I$(OUTPUT) 187TEST_VERIFIER_CFLAGS := -I. -I$(OUTPUT) -Iverifier 188 189ifneq ($(SUBREG_CODEGEN),) 190ALU32_BUILD_DIR = $(OUTPUT)/alu32 191TEST_CUSTOM_PROGS += $(ALU32_BUILD_DIR)/test_progs_32 192$(ALU32_BUILD_DIR): 193 mkdir -p $@ 194 195$(ALU32_BUILD_DIR)/urandom_read: $(OUTPUT)/urandom_read | $(ALU32_BUILD_DIR) 196 cp $< $@ 197 198$(ALU32_BUILD_DIR)/test_progs_32: test_progs.c $(OUTPUT)/libbpf.a\ 199 $(ALU32_BUILD_DIR)/urandom_read \ 200 | $(ALU32_BUILD_DIR) 201 $(CC) $(TEST_PROGS_CFLAGS) $(CFLAGS) \ 202 -o $(ALU32_BUILD_DIR)/test_progs_32 \ 203 test_progs.c test_stub.c trace_helpers.c prog_tests/*.c \ 204 $(OUTPUT)/libbpf.a $(LDLIBS) 205 206$(ALU32_BUILD_DIR)/test_progs_32: $(PROG_TESTS_H) 207$(ALU32_BUILD_DIR)/test_progs_32: prog_tests/*.c 208 209$(ALU32_BUILD_DIR)/%.o: progs/%.c $(ALU32_BUILD_DIR)/test_progs_32 \ 210 | $(ALU32_BUILD_DIR) 211 ($(CLANG) $(CLANG_FLAGS) -O2 -target bpf -emit-llvm -c $< -o - || \ 212 echo "clang failed") | \ 213 $(LLC) -march=bpf -mattr=+alu32 -mcpu=$(CPU) $(LLC_FLAGS) \ 214 -filetype=obj -o $@ 215ifeq ($(DWARF2BTF),y) 216 $(BTF_PAHOLE) -J $@ 217endif 218endif 219 220# Have one program compiled without "-target bpf" to test whether libbpf loads 221# it successfully 222$(OUTPUT)/test_xdp.o: progs/test_xdp.c 223 ($(CLANG) $(CLANG_FLAGS) -O2 -emit-llvm -c $< -o - || \ 224 echo "clang failed") | \ 225 $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@ 226ifeq ($(DWARF2BTF),y) 227 $(BTF_PAHOLE) -J $@ 228endif 229 230$(OUTPUT)/%.o: progs/%.c 231 ($(CLANG) $(CLANG_FLAGS) -O2 -target bpf -emit-llvm -c $< -o - || \ 232 echo "clang failed") | \ 233 $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@ 234ifeq ($(DWARF2BTF),y) 235 $(BTF_PAHOLE) -J $@ 236endif 237 238PROG_TESTS_DIR = $(OUTPUT)/prog_tests 239$(PROG_TESTS_DIR): 240 mkdir -p $@ 241PROG_TESTS_H := $(PROG_TESTS_DIR)/tests.h 242PROG_TESTS_FILES := $(wildcard prog_tests/*.c) 243test_progs.c: $(PROG_TESTS_H) 244$(OUTPUT)/test_progs: CFLAGS += $(TEST_PROGS_CFLAGS) 245$(OUTPUT)/test_progs: test_progs.c $(PROG_TESTS_FILES) | $(PROG_TESTS_H) 246$(PROG_TESTS_H): $(PROG_TESTS_FILES) | $(PROG_TESTS_DIR) 247 $(shell ( cd prog_tests/; \ 248 echo '/* Generated header, do not edit */'; \ 249 ls *.c 2> /dev/null | \ 250 sed -e 's@\([^\.]*\)\.c@DEFINE_TEST(\1)@'; \ 251 ) > $(PROG_TESTS_H)) 252 253MAP_TESTS_DIR = $(OUTPUT)/map_tests 254$(MAP_TESTS_DIR): 255 mkdir -p $@ 256MAP_TESTS_H := $(MAP_TESTS_DIR)/tests.h 257MAP_TESTS_FILES := $(wildcard map_tests/*.c) 258test_maps.c: $(MAP_TESTS_H) 259$(OUTPUT)/test_maps: CFLAGS += $(TEST_MAPS_CFLAGS) 260$(OUTPUT)/test_maps: test_maps.c $(MAP_TESTS_FILES) | $(MAP_TESTS_H) 261$(MAP_TESTS_H): $(MAP_TESTS_FILES) | $(MAP_TESTS_DIR) 262 $(shell ( cd map_tests/; \ 263 echo '/* Generated header, do not edit */'; \ 264 echo '#ifdef DECLARE'; \ 265 ls *.c 2> /dev/null | \ 266 sed -e 's@\([^\.]*\)\.c@extern void test_\1(void);@'; \ 267 echo '#endif'; \ 268 echo '#ifdef CALL'; \ 269 ls *.c 2> /dev/null | \ 270 sed -e 's@\([^\.]*\)\.c@test_\1();@'; \ 271 echo '#endif' \ 272 ) > $(MAP_TESTS_H)) 273 274VERIFIER_TESTS_DIR = $(OUTPUT)/verifier 275$(VERIFIER_TESTS_DIR): 276 mkdir -p $@ 277VERIFIER_TESTS_H := $(VERIFIER_TESTS_DIR)/tests.h 278VERIFIER_TEST_FILES := $(wildcard verifier/*.c) 279test_verifier.c: $(VERIFIER_TESTS_H) 280$(OUTPUT)/test_verifier: CFLAGS += $(TEST_VERIFIER_CFLAGS) 281$(OUTPUT)/test_verifier: test_verifier.c | $(VERIFIER_TEST_FILES) $(VERIFIER_TESTS_H) 282$(VERIFIER_TESTS_H): $(VERIFIER_TEST_FILES) | $(VERIFIER_TESTS_DIR) 283 $(shell ( cd verifier/; \ 284 echo '/* Generated header, do not edit */'; \ 285 echo '#ifdef FILL_ARRAY'; \ 286 ls *.c 2> /dev/null | \ 287 sed -e 's@\(.*\)@#include \"\1\"@'; \ 288 echo '#endif' \ 289 ) > $(VERIFIER_TESTS_H)) 290 291EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(ALU32_BUILD_DIR) \ 292 $(VERIFIER_TESTS_H) $(PROG_TESTS_H) $(MAP_TESTS_H) \ 293 feature 294