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 37# Also test sub-register code-gen if LLVM has eBPF v3 processor support which 38# contains both ALU32 and JMP32 instructions. 39SUBREG_CODEGEN := $(shell echo "int cal(int a) { return a > 0; }" | \ 40 $(CLANG) -target bpf -O2 -emit-llvm -S -x c - -o - | \ 41 $(LLC) -mattr=+alu32 -mcpu=v3 2>&1 | \ 42 grep 'if w') 43ifneq ($(SUBREG_CODEGEN),) 44TEST_GEN_FILES += $(patsubst %.o,alu32/%.o, $(BPF_OBJ_FILES)) 45endif 46 47# Order correspond to 'make run_tests' order 48TEST_PROGS := test_kmod.sh \ 49 test_libbpf.sh \ 50 test_xdp_redirect.sh \ 51 test_xdp_meta.sh \ 52 test_xdp_veth.sh \ 53 test_offload.py \ 54 test_sock_addr.sh \ 55 test_tunnel.sh \ 56 test_lwt_seg6local.sh \ 57 test_lirc_mode2.sh \ 58 test_skb_cgroup_id.sh \ 59 test_flow_dissector.sh \ 60 test_xdp_vlan_mode_generic.sh \ 61 test_xdp_vlan_mode_native.sh \ 62 test_lwt_ip_encap.sh \ 63 test_tcp_check_syncookie.sh \ 64 test_tc_tunnel.sh \ 65 test_tc_edt.sh \ 66 test_xdping.sh 67 68TEST_PROGS_EXTENDED := with_addr.sh \ 69 with_tunnels.sh \ 70 tcp_client.py \ 71 tcp_server.py 72 73# Compile but not part of 'make run_tests' 74TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr test_skb_cgroup_id_user \ 75 flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \ 76 test_lirc_mode2_user 77 78include ../lib.mk 79 80# NOTE: $(OUTPUT) won't get default value if used before lib.mk 81TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read 82all: $(TEST_CUSTOM_PROGS) 83 84$(OUTPUT)/urandom_read: $(OUTPUT)/%: %.c 85 $(CC) -o $@ $< -Wl,--build-id 86 87$(OUTPUT)/test_stub.o: test_stub.c 88 $(CC) $(TEST_PROGS_CFLAGS) $(CFLAGS) -c -o $@ $< 89 90BPFOBJ := $(OUTPUT)/libbpf.a 91 92$(TEST_GEN_PROGS): $(OUTPUT)/test_stub.o $(BPFOBJ) 93 94$(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(OUTPUT)/libbpf.a 95 96$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c 97$(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c 98$(OUTPUT)/test_sock: cgroup_helpers.c 99$(OUTPUT)/test_sock_addr: cgroup_helpers.c 100$(OUTPUT)/test_socket_cookie: cgroup_helpers.c 101$(OUTPUT)/test_sockmap: cgroup_helpers.c 102$(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c 103$(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c 104$(OUTPUT)/test_progs: trace_helpers.c 105$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c 106$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c 107$(OUTPUT)/test_netcnt: cgroup_helpers.c 108$(OUTPUT)/test_sock_fields: cgroup_helpers.c 109$(OUTPUT)/test_sysctl: cgroup_helpers.c 110$(OUTPUT)/test_cgroup_attach: cgroup_helpers.c 111$(OUTPUT)/test_sockopt: cgroup_helpers.c 112$(OUTPUT)/test_sockopt_sk: cgroup_helpers.c 113$(OUTPUT)/test_sockopt_multi: cgroup_helpers.c 114$(OUTPUT)/test_sockopt_inherit: cgroup_helpers.c 115$(OUTPUT)/test_tcp_rtt: cgroup_helpers.c 116 117.PHONY: force 118 119# force a rebuild of BPFOBJ when its dependencies are updated 120force: 121 122$(BPFOBJ): force 123 $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/ 124 125PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1) 126 127# Let newer LLVM versions transparently probe the kernel for availability 128# of full BPF instruction set. 129ifeq ($(PROBE),) 130 CPU ?= probe 131else 132 CPU ?= generic 133endif 134 135# Get Clang's default includes on this system, as opposed to those seen by 136# '-target bpf'. This fixes "missing" files on some architectures/distros, 137# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 138# 139# Use '-idirafter': Don't interfere with include mechanics except where the 140# build would have failed anyways. 141CLANG_SYS_INCLUDES := $(shell $(CLANG) -v -E - </dev/null 2>&1 \ 142 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') 143 144CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \ 145 $(CLANG_SYS_INCLUDES) \ 146 -Wno-compare-distinct-pointer-types \ 147 -D__TARGET_ARCH_$(SRCARCH) 148 149$(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline 150$(OUTPUT)/test_xdp_noinline.o: CLANG_FLAGS += -fno-inline 151 152$(OUTPUT)/test_queue_map.o: test_queue_stack_map.h 153$(OUTPUT)/test_stack_map.o: test_queue_stack_map.h 154 155$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h 156$(OUTPUT)/test_progs.o: flow_dissector_load.h 157 158BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris) 159BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF) 160BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm') 161BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \ 162 $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \ 163 $(LLVM_READELF) -S ./llvm_btf_verify.o | grep BTF; \ 164 /bin/rm -f ./llvm_btf_verify.o) 165 166ifneq ($(BTF_LLVM_PROBE),) 167 CLANG_FLAGS += -g 168else 169ifneq ($(BTF_LLC_PROBE),) 170ifneq ($(BTF_PAHOLE_PROBE),) 171ifneq ($(BTF_OBJCOPY_PROBE),) 172 CLANG_FLAGS += -g 173 LLC_FLAGS += -mattr=dwarfris 174 DWARF2BTF = y 175endif 176endif 177endif 178endif 179 180TEST_PROGS_CFLAGS := -I. -I$(OUTPUT) 181TEST_MAPS_CFLAGS := -I. -I$(OUTPUT) 182TEST_VERIFIER_CFLAGS := -I. -I$(OUTPUT) -Iverifier 183 184ifneq ($(SUBREG_CODEGEN),) 185ALU32_BUILD_DIR = $(OUTPUT)/alu32 186TEST_CUSTOM_PROGS += $(ALU32_BUILD_DIR)/test_progs_32 187$(ALU32_BUILD_DIR): 188 mkdir -p $@ 189 190$(ALU32_BUILD_DIR)/urandom_read: $(OUTPUT)/urandom_read | $(ALU32_BUILD_DIR) 191 cp $< $@ 192 193$(ALU32_BUILD_DIR)/test_progs_32: test_progs.c $(OUTPUT)/libbpf.a\ 194 $(ALU32_BUILD_DIR)/urandom_read \ 195 | $(ALU32_BUILD_DIR) 196 $(CC) $(TEST_PROGS_CFLAGS) $(CFLAGS) \ 197 -o $(ALU32_BUILD_DIR)/test_progs_32 \ 198 test_progs.c test_stub.c trace_helpers.c prog_tests/*.c \ 199 $(OUTPUT)/libbpf.a $(LDLIBS) 200 201$(ALU32_BUILD_DIR)/test_progs_32: $(PROG_TESTS_H) 202$(ALU32_BUILD_DIR)/test_progs_32: prog_tests/*.c 203 204$(ALU32_BUILD_DIR)/%.o: progs/%.c $(ALU32_BUILD_DIR)/test_progs_32 \ 205 | $(ALU32_BUILD_DIR) 206 ($(CLANG) $(CLANG_FLAGS) -O2 -target bpf -emit-llvm -c $< -o - || \ 207 echo "clang failed") | \ 208 $(LLC) -march=bpf -mattr=+alu32 -mcpu=$(CPU) $(LLC_FLAGS) \ 209 -filetype=obj -o $@ 210ifeq ($(DWARF2BTF),y) 211 $(BTF_PAHOLE) -J $@ 212endif 213endif 214 215# Have one program compiled without "-target bpf" to test whether libbpf loads 216# it successfully 217$(OUTPUT)/test_xdp.o: progs/test_xdp.c 218 ($(CLANG) $(CLANG_FLAGS) -O2 -emit-llvm -c $< -o - || \ 219 echo "clang failed") | \ 220 $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@ 221ifeq ($(DWARF2BTF),y) 222 $(BTF_PAHOLE) -J $@ 223endif 224 225$(OUTPUT)/%.o: progs/%.c 226 ($(CLANG) $(CLANG_FLAGS) -O2 -target bpf -emit-llvm -c $< -o - || \ 227 echo "clang failed") | \ 228 $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@ 229ifeq ($(DWARF2BTF),y) 230 $(BTF_PAHOLE) -J $@ 231endif 232 233PROG_TESTS_DIR = $(OUTPUT)/prog_tests 234$(PROG_TESTS_DIR): 235 mkdir -p $@ 236PROG_TESTS_H := $(PROG_TESTS_DIR)/tests.h 237PROG_TESTS_FILES := $(wildcard prog_tests/*.c) 238test_progs.c: $(PROG_TESTS_H) 239$(OUTPUT)/test_progs: CFLAGS += $(TEST_PROGS_CFLAGS) 240$(OUTPUT)/test_progs: test_progs.c $(PROG_TESTS_FILES) | $(PROG_TESTS_H) 241$(PROG_TESTS_H): $(PROG_TESTS_FILES) | $(PROG_TESTS_DIR) 242 $(shell ( cd prog_tests/; \ 243 echo '/* Generated header, do not edit */'; \ 244 ls *.c 2> /dev/null | \ 245 sed -e 's@\([^\.]*\)\.c@DEFINE_TEST(\1)@'; \ 246 ) > $(PROG_TESTS_H)) 247 248MAP_TESTS_DIR = $(OUTPUT)/map_tests 249$(MAP_TESTS_DIR): 250 mkdir -p $@ 251MAP_TESTS_H := $(MAP_TESTS_DIR)/tests.h 252MAP_TESTS_FILES := $(wildcard map_tests/*.c) 253test_maps.c: $(MAP_TESTS_H) 254$(OUTPUT)/test_maps: CFLAGS += $(TEST_MAPS_CFLAGS) 255$(OUTPUT)/test_maps: test_maps.c $(MAP_TESTS_FILES) | $(MAP_TESTS_H) 256$(MAP_TESTS_H): $(MAP_TESTS_FILES) | $(MAP_TESTS_DIR) 257 $(shell ( cd map_tests/; \ 258 echo '/* Generated header, do not edit */'; \ 259 echo '#ifdef DECLARE'; \ 260 ls *.c 2> /dev/null | \ 261 sed -e 's@\([^\.]*\)\.c@extern void test_\1(void);@'; \ 262 echo '#endif'; \ 263 echo '#ifdef CALL'; \ 264 ls *.c 2> /dev/null | \ 265 sed -e 's@\([^\.]*\)\.c@test_\1();@'; \ 266 echo '#endif' \ 267 ) > $(MAP_TESTS_H)) 268 269VERIFIER_TESTS_DIR = $(OUTPUT)/verifier 270$(VERIFIER_TESTS_DIR): 271 mkdir -p $@ 272VERIFIER_TESTS_H := $(VERIFIER_TESTS_DIR)/tests.h 273VERIFIER_TEST_FILES := $(wildcard verifier/*.c) 274test_verifier.c: $(VERIFIER_TESTS_H) 275$(OUTPUT)/test_verifier: CFLAGS += $(TEST_VERIFIER_CFLAGS) 276$(OUTPUT)/test_verifier: test_verifier.c | $(VERIFIER_TEST_FILES) $(VERIFIER_TESTS_H) 277$(VERIFIER_TESTS_H): $(VERIFIER_TEST_FILES) | $(VERIFIER_TESTS_DIR) 278 $(shell ( cd verifier/; \ 279 echo '/* Generated header, do not edit */'; \ 280 echo '#ifdef FILL_ARRAY'; \ 281 ls *.c 2> /dev/null | \ 282 sed -e 's@\(.*\)@#include \"\1\"@'; \ 283 echo '#endif' \ 284 ) > $(VERIFIER_TESTS_H)) 285 286EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(ALU32_BUILD_DIR) \ 287 $(VERIFIER_TESTS_H) $(PROG_TESTS_H) $(MAP_TESTS_H) \ 288 feature 289