1# SPDX-License-Identifier: GPL-2.0 2include ../../../../scripts/Kbuild.include 3include ../../../scripts/Makefile.arch 4 5CURDIR := $(abspath .) 6TOOLSDIR := $(abspath ../../..) 7LIBDIR := $(TOOLSDIR)/lib 8BPFDIR := $(LIBDIR)/bpf 9TOOLSINCDIR := $(TOOLSDIR)/include 10BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool 11APIDIR := $(TOOLSINCDIR)/uapi 12GENDIR := $(abspath ../../../../include/generated) 13GENHDR := $(GENDIR)/autoconf.h 14 15ifneq ($(wildcard $(GENHDR)),) 16 GENFLAGS := -DHAVE_GENHDR 17endif 18 19CLANG ?= clang 20LLC ?= llc 21LLVM_OBJCOPY ?= llvm-objcopy 22BPF_GCC ?= $(shell command -v bpf-gcc;) 23CFLAGS += -g -rdynamic -Wall -O2 $(GENFLAGS) -I$(CURDIR) \ 24 -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) -I$(TOOLSINCDIR) \ 25 -I$(APIDIR) \ 26 -Dbpf_prog_load=bpf_prog_test_load \ 27 -Dbpf_load_program=bpf_test_load_program 28LDLIBS += -lcap -lelf -lz -lrt -lpthread 29 30# Order correspond to 'make run_tests' order 31TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \ 32 test_align test_verifier_log test_dev_cgroup test_tcpbpf_user \ 33 test_sock test_btf test_sockmap get_cgroup_id_user test_socket_cookie \ 34 test_cgroup_storage \ 35 test_netcnt test_tcpnotify_user test_sock_fields test_sysctl test_hashmap \ 36 test_progs-no_alu32 \ 37 test_current_pid_tgid_new_ns 38 39# Also test bpf-gcc, if present 40ifneq ($(BPF_GCC),) 41TEST_GEN_PROGS += test_progs-bpf_gcc 42endif 43 44TEST_GEN_FILES = 45TEST_FILES = test_lwt_ip_encap.o \ 46 test_tc_edt.o 47 48# Order correspond to 'make run_tests' order 49TEST_PROGS := test_kmod.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 test_bpftool_build.sh \ 68 test_bpftool.sh 69 70TEST_PROGS_EXTENDED := with_addr.sh \ 71 with_tunnels.sh \ 72 tcp_client.py \ 73 tcp_server.py \ 74 test_xdp_vlan.sh 75 76# Compile but not part of 'make run_tests' 77TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \ 78 flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \ 79 test_lirc_mode2_user xdping test_cpp runqslower 80 81TEST_CUSTOM_PROGS = urandom_read 82 83# Emit succinct information message describing current building step 84# $1 - generic step name (e.g., CC, LINK, etc); 85# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor]; 86# $3 - target (assumed to be file); only file name will be emitted; 87# $4 - optional extra arg, emitted as-is, if provided. 88ifeq ($(V),1) 89Q = 90msg = 91else 92Q = @ 93msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))"; 94MAKEFLAGS += --no-print-directory 95submake_extras := feature_display=0 96endif 97 98# override lib.mk's default rules 99OVERRIDE_TARGETS := 1 100override define CLEAN 101 $(call msg,CLEAN) 102 $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN) 103endef 104 105include ../lib.mk 106 107SCRATCH_DIR := $(OUTPUT)/tools 108BUILD_DIR := $(SCRATCH_DIR)/build 109INCLUDE_DIR := $(SCRATCH_DIR)/include 110BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a 111 112# Define simple and short `make test_progs`, `make test_sysctl`, etc targets 113# to build individual tests. 114# NOTE: Semicolon at the end is critical to override lib.mk's default static 115# rule for binaries. 116$(notdir $(TEST_GEN_PROGS) \ 117 $(TEST_PROGS) \ 118 $(TEST_PROGS_EXTENDED) \ 119 $(TEST_GEN_PROGS_EXTENDED) \ 120 $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ; 121 122$(OUTPUT)/%:%.c 123 $(call msg,BINARY,,$@) 124 $(LINK.c) $^ $(LDLIBS) -o $@ 125 126$(OUTPUT)/urandom_read: urandom_read.c 127 $(call msg,BINARY,,$@) 128 $(CC) $(LDFLAGS) -o $@ $< $(LDLIBS) -Wl,--build-id 129 130$(OUTPUT)/test_stub.o: test_stub.c $(BPFOBJ) 131 $(call msg,CC,,$@) 132 $(CC) -c $(CFLAGS) -o $@ $< 133 134VMLINUX_BTF_PATHS := $(if $(O),$(O)/vmlinux) \ 135 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \ 136 ../../../../vmlinux \ 137 /sys/kernel/btf/vmlinux \ 138 /boot/vmlinux-$(shell uname -r) 139VMLINUX_BTF := $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) 140 141$(OUTPUT)/runqslower: $(BPFOBJ) 142 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \ 143 OUTPUT=$(SCRATCH_DIR)/ VMLINUX_BTF=$(VMLINUX_BTF) \ 144 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) 145 146$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(BPFOBJ) 147 148$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c 149$(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c 150$(OUTPUT)/test_sock: cgroup_helpers.c 151$(OUTPUT)/test_sock_addr: cgroup_helpers.c 152$(OUTPUT)/test_socket_cookie: cgroup_helpers.c 153$(OUTPUT)/test_sockmap: cgroup_helpers.c 154$(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c 155$(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c 156$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c 157$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c 158$(OUTPUT)/test_netcnt: cgroup_helpers.c 159$(OUTPUT)/test_sock_fields: cgroup_helpers.c 160$(OUTPUT)/test_sysctl: cgroup_helpers.c 161 162DEFAULT_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool 163BPFTOOL ?= $(DEFAULT_BPFTOOL) 164$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 165 $(BPFOBJ) | $(BUILD_DIR)/bpftool 166 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 167 OUTPUT=$(BUILD_DIR)/bpftool/ \ 168 prefix= DESTDIR=$(SCRATCH_DIR)/ install 169 170$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 171 ../../../include/uapi/linux/bpf.h \ 172 | $(INCLUDE_DIR) $(BUILD_DIR)/libbpf 173 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \ 174 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers 175 176$(BUILD_DIR)/libbpf $(BUILD_DIR)/bpftool $(INCLUDE_DIR): 177 $(call msg,MKDIR,,$@) 178 mkdir -p $@ 179 180$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) | $(BPFTOOL) $(INCLUDE_DIR) 181 $(call msg,GEN,,$@) 182 $(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@ 183 184# Get Clang's default includes on this system, as opposed to those seen by 185# '-target bpf'. This fixes "missing" files on some architectures/distros, 186# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 187# 188# Use '-idirafter': Don't interfere with include mechanics except where the 189# build would have failed anyways. 190define get_sys_includes 191$(shell $(1) -v -E - </dev/null 2>&1 \ 192 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') 193endef 194 195# Determine target endianness. 196IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \ 197 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__') 198MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian) 199 200CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG)) 201BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ 202 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \ 203 -I$(abspath $(OUTPUT)/../usr/include) 204 205CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \ 206 -Wno-compare-distinct-pointer-types 207 208$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline 209$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline 210 211$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h 212 213# Build BPF object using Clang 214# $1 - input .c file 215# $2 - output .o file 216# $3 - CFLAGS 217# $4 - LDFLAGS 218define CLANG_BPF_BUILD_RULE 219 $(call msg,CLNG-LLC,$(TRUNNER_BINARY),$2) 220 ($(CLANG) $3 -O2 -target bpf -emit-llvm \ 221 -c $1 -o - || echo "BPF obj compilation failed") | \ 222 $(LLC) -mattr=dwarfris -march=bpf -mcpu=v3 $4 -filetype=obj -o $2 223endef 224# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32 225define CLANG_NOALU32_BPF_BUILD_RULE 226 $(call msg,CLNG-LLC,$(TRUNNER_BINARY),$2) 227 ($(CLANG) $3 -O2 -target bpf -emit-llvm \ 228 -c $1 -o - || echo "BPF obj compilation failed") | \ 229 $(LLC) -march=bpf -mcpu=v2 $4 -filetype=obj -o $2 230endef 231# Similar to CLANG_BPF_BUILD_RULE, but using native Clang and bpf LLC 232define CLANG_NATIVE_BPF_BUILD_RULE 233 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 234 ($(CLANG) $3 -O2 -emit-llvm \ 235 -c $1 -o - || echo "BPF obj compilation failed") | \ 236 $(LLC) -march=bpf -mcpu=v3 $4 -filetype=obj -o $2 237endef 238# Build BPF object using GCC 239define GCC_BPF_BUILD_RULE 240 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2) 241 $(BPF_GCC) $3 $4 -O2 -c $1 -o $2 242endef 243 244SKEL_BLACKLIST := btf__% test_pinning_invalid.c 245 246# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on 247# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES. 248# Parameters: 249# $1 - test runner base binary name (e.g., test_progs) 250# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc) 251define DEFINE_TEST_RUNNER 252 253TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2 254TRUNNER_BINARY := $1$(if $2,-)$2 255TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \ 256 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c))) 257TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \ 258 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES))) 259TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES)) 260TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h 261TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c)) 262TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, $$(TRUNNER_BPF_SRCS)) 263TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \ 264 $$(filter-out $(SKEL_BLACKLIST), \ 265 $$(TRUNNER_BPF_SRCS))) 266 267# Evaluate rules now with extra TRUNNER_XXX variables above already defined 268$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2)) 269 270endef 271 272# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and 273# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with: 274# $1 - test runner base binary name (e.g., test_progs) 275# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc) 276define DEFINE_TEST_RUNNER_RULES 277 278ifeq ($($(TRUNNER_OUTPUT)-dir),) 279$(TRUNNER_OUTPUT)-dir := y 280$(TRUNNER_OUTPUT): 281 $$(call msg,MKDIR,,$$@) 282 mkdir -p $$@ 283endif 284 285# ensure we set up BPF objects generation rule just once for a given 286# input/output directory combination 287ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),) 288$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y 289$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.o: \ 290 $(TRUNNER_BPF_PROGS_DIR)/%.c \ 291 $(TRUNNER_BPF_PROGS_DIR)/*.h \ 292 $$(INCLUDE_DIR)/vmlinux.h \ 293 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 294 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \ 295 $(TRUNNER_BPF_CFLAGS), \ 296 $(TRUNNER_BPF_LDFLAGS)) 297 298$(TRUNNER_BPF_SKELS): $(TRUNNER_OUTPUT)/%.skel.h: \ 299 $(TRUNNER_OUTPUT)/%.o \ 300 | $(BPFTOOL) $(TRUNNER_OUTPUT) 301 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 302 $$(BPFTOOL) gen skeleton $$< > $$@ 303endif 304 305# ensure we set up tests.h header generation rule just once 306ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),) 307$(TRUNNER_TESTS_DIR)-tests-hdr := y 308$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c 309 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@) 310 $$(shell ( cd $(TRUNNER_TESTS_DIR); \ 311 echo '/* Generated header, do not edit */'; \ 312 ls *.c 2> /dev/null | \ 313 sed -e 's@\([^\.]*\)\.c@DEFINE_TEST(\1)@'; \ 314 ) > $$@) 315endif 316 317# compile individual test files 318# Note: we cd into output directory to ensure embedded BPF object is found 319$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \ 320 $(TRUNNER_TESTS_DIR)/%.c \ 321 $(TRUNNER_EXTRA_HDRS) \ 322 $(TRUNNER_BPF_OBJS) \ 323 $(TRUNNER_BPF_SKELS) \ 324 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 325 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@) 326 cd $$(@D) && $$(CC) $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F) 327 328$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \ 329 %.c \ 330 $(TRUNNER_EXTRA_HDRS) \ 331 $(TRUNNER_TESTS_HDR) \ 332 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 333 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@) 334 $$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@ 335 336# only copy extra resources if in flavored build 337$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT) 338ifneq ($2,) 339 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES)) 340 cp -a $$^ $(TRUNNER_OUTPUT)/ 341endif 342 343$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \ 344 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \ 345 | $(TRUNNER_BINARY)-extras 346 $$(call msg,BINARY,,$$@) 347 $$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@ 348 349endef 350 351# Define test_progs test runner. 352TRUNNER_TESTS_DIR := prog_tests 353TRUNNER_BPF_PROGS_DIR := progs 354TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c \ 355 flow_dissector_load.h 356TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read \ 357 $(wildcard progs/btf_dump_test_case_*.c) 358TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE 359TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) 360TRUNNER_BPF_LDFLAGS := -mattr=+alu32 361$(eval $(call DEFINE_TEST_RUNNER,test_progs)) 362 363# Define test_progs-no_alu32 test runner. 364TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE 365TRUNNER_BPF_LDFLAGS := 366$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32)) 367 368# Define test_progs BPF-GCC-flavored test runner. 369ifneq ($(BPF_GCC),) 370TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE 371TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc) 372TRUNNER_BPF_LDFLAGS := 373$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc)) 374endif 375 376# Define test_maps test runner. 377TRUNNER_TESTS_DIR := map_tests 378TRUNNER_BPF_PROGS_DIR := progs 379TRUNNER_EXTRA_SOURCES := test_maps.c 380TRUNNER_EXTRA_FILES := 381TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built) 382TRUNNER_BPF_CFLAGS := 383TRUNNER_BPF_LDFLAGS := 384$(eval $(call DEFINE_TEST_RUNNER,test_maps)) 385 386# Define test_verifier test runner. 387# It is much simpler than test_maps/test_progs and sufficiently different from 388# them (e.g., test.h is using completely pattern), that it's worth just 389# explicitly defining all the rules explicitly. 390verifier/tests.h: verifier/*.c 391 $(shell ( cd verifier/; \ 392 echo '/* Generated header, do not edit */'; \ 393 echo '#ifdef FILL_ARRAY'; \ 394 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \ 395 echo '#endif' \ 396 ) > verifier/tests.h) 397$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT) 398 $(call msg,BINARY,,$@) 399 $(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 400 401# Make sure we are able to include and link libbpf against c++. 402$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ) 403 $(call msg,CXX,,$@) 404 $(CXX) $(CFLAGS) $^ $(LDLIBS) -o $@ 405 406EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) \ 407 prog_tests/tests.h map_tests/tests.h verifier/tests.h \ 408 feature \ 409 $(addprefix $(OUTPUT)/,*.o *.skel.h no_alu32 bpf_gcc) 410