1# SPDX-License-Identifier: GPL-2.0 2include ../../../build/Build.include 3include ../../../scripts/Makefile.arch 4include ../../../scripts/Makefile.include 5 6OBJCOPY ?= $(CROSS_COMPILE)objcopy 7 8CURDIR := $(abspath .) 9TOOLSDIR := $(abspath ../../..) 10LIBDIR := $(TOOLSDIR)/lib 11BPFDIR := $(LIBDIR)/bpf 12TOOLSINCDIR := $(TOOLSDIR)/include 13TOOLSARCHINCDIR := $(TOOLSDIR)/arch/$(SRCARCH)/include 14BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool 15APIDIR := $(TOOLSINCDIR)/uapi 16ifneq ($(O),) 17GENDIR := $(O)/include/generated 18else 19GENDIR := $(abspath ../../../../include/generated) 20endif 21GENHDR := $(GENDIR)/autoconf.h 22PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config 23 24ifneq ($(wildcard $(GENHDR)),) 25 GENFLAGS := -DHAVE_GENHDR 26endif 27 28BPF_GCC ?= $(shell command -v bpf-gcc;) 29ifdef ASAN 30SAN_CFLAGS ?= -fsanitize=address -fno-omit-frame-pointer 31else 32SAN_CFLAGS ?= 33endif 34SAN_LDFLAGS ?= $(SAN_CFLAGS) 35RELEASE ?= 36OPT_FLAGS ?= $(if $(RELEASE),-O2,-O0) 37 38LIBELF_CFLAGS := $(shell $(PKG_CONFIG) libelf --cflags 2>/dev/null) 39LIBELF_LIBS := $(shell $(PKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf) 40 41SKIP_DOCS ?= 42SKIP_LLVM ?= 43SKIP_LIBBFD ?= 44SKIP_CRYPTO ?= 45 46# When BPF_STRICT_BUILD is 1, any BPF object, skeleton, test object, or 47# benchmark compilation failure is fatal. Set to 0 to tolerate failures 48# and continue building the remaining tests. 49BPF_STRICT_BUILD ?= 1 50PERMISSIVE := $(filter 0,$(BPF_STRICT_BUILD)) 51 52ifeq ($(srctree),) 53srctree := $(patsubst %/,%,$(dir $(CURDIR))) 54srctree := $(patsubst %/,%,$(dir $(srctree))) 55srctree := $(patsubst %/,%,$(dir $(srctree))) 56srctree := $(patsubst %/,%,$(dir $(srctree))) 57endif 58 59COMMON_CFLAGS = -g $(OPT_FLAGS) -rdynamic -std=gnu11 \ 60 -Wall -Werror -fno-omit-frame-pointer \ 61 -Wno-unused-but-set-variable \ 62 $(GENFLAGS) $(SAN_CFLAGS) $(LIBELF_CFLAGS) \ 63 -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \ 64 -I$(TOOLSINCDIR) -I$(TOOLSARCHINCDIR) -I$(APIDIR) -I$(OUTPUT) \ 65 -I$(CURDIR)/libarena/include 66LDFLAGS += $(SAN_LDFLAGS) 67LDLIBS += $(LIBELF_LIBS) -lz -lrt -lpthread 68 69PCAP_CFLAGS := $(shell $(PKG_CONFIG) --cflags libpcap 2>/dev/null && echo "-DTRAFFIC_MONITOR=1") 70PCAP_LIBS := $(shell $(PKG_CONFIG) --libs libpcap 2>/dev/null) 71LDLIBS += $(PCAP_LIBS) 72CFLAGS += $(COMMON_CFLAGS) $(PCAP_CFLAGS) 73 74# Some utility functions use LLVM libraries 75jit_disasm_helpers.c-CFLAGS = $(LLVM_CFLAGS) 76 77ifneq ($(LLVM),) 78# Silence some warnings when compiled with clang 79CFLAGS += -Wno-unused-command-line-argument 80endif 81 82# Check whether bpf cpu=v4 is supported or not by clang 83ifneq ($(shell $(CLANG) --target=bpf -mcpu=help 2>&1 | grep 'v4'),) 84CLANG_CPUV4 := 1 85endif 86 87# Check whether clang supports BPF address sanitizer (requires LLVM 22+) 88CLANG_HAS_ARENA_ASAN := $(shell echo 'int x;' | \ 89 $(CLANG) --target=bpf -fsanitize=kernel-address \ 90 -mllvm -asan-shadow-addr-space=1 \ 91 -x c -c - -o /dev/null 2>/dev/null && echo 1) 92 93# Order correspond to 'make run_tests' order 94TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_progs \ 95 test_sockmap \ 96 test_tcpnotify_user \ 97 test_progs-no_alu32 98TEST_INST_SUBDIRS := no_alu32 99 100# Also test bpf-gcc, if present 101ifneq ($(BPF_GCC),) 102TEST_GEN_PROGS += test_progs-bpf_gcc 103TEST_INST_SUBDIRS += bpf_gcc 104 105# The following tests contain C code that, although technically legal, 106# triggers GCC warnings that cannot be disabled: declaration of 107# anonymous struct types in function parameter lists. 108progs/btf_dump_test_case_bitfields.c-bpf_gcc-CFLAGS := -Wno-error 109progs/btf_dump_test_case_namespacing.c-bpf_gcc-CFLAGS := -Wno-error 110progs/btf_dump_test_case_packing.c-bpf_gcc-CFLAGS := -Wno-error 111progs/btf_dump_test_case_padding.c-bpf_gcc-CFLAGS := -Wno-error 112progs/btf_dump_test_case_syntax.c-bpf_gcc-CFLAGS := -Wno-error 113 114endif 115 116ifneq ($(CLANG_CPUV4),) 117TEST_GEN_PROGS += test_progs-cpuv4 118TEST_INST_SUBDIRS += cpuv4 119endif 120 121TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c) 122 123# Order correspond to 'make run_tests' order 124TEST_PROGS := test_kmod.sh \ 125 test_lirc_mode2.sh \ 126 test_bpftool_build.sh \ 127 test_doc_build.sh \ 128 test_xsk.sh \ 129 test_xdp_features.sh 130 131TEST_PROGS_EXTENDED := \ 132 ima_setup.sh verify_sig_setup.sh 133 134TEST_KMODS := bpf_testmod.ko bpf_test_no_cfi.ko bpf_test_modorder_x.ko \ 135 bpf_test_modorder_y.ko bpf_test_rqspinlock.ko 136TEST_KMOD_TARGETS = $(addprefix $(OUTPUT)/,$(TEST_KMODS)) 137 138# Compile but not part of 'make run_tests' 139TEST_GEN_PROGS_EXTENDED = \ 140 bench \ 141 flow_dissector_load \ 142 test_cpp \ 143 test_lirc_mode2_user \ 144 veristat \ 145 xdp_features \ 146 xdp_hw_metadata \ 147 xdp_synproxy \ 148 xskxceiver 149 150TEST_GEN_FILES += $(TEST_KMODS) liburandom_read.so urandom_read sign-file uprobe_multi 151 152ifneq ($(V),1) 153submake_extras := feature_display=0 154endif 155 156# override lib.mk's default rules 157OVERRIDE_TARGETS := 1 158override define CLEAN 159 $(call msg,CLEAN) 160 $(Q)$(RM) -r $(TEST_GEN_PROGS) 161 $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED) 162 $(Q)$(RM) -r $(TEST_GEN_FILES) 163 $(Q)$(RM) -r $(TEST_KMODS) 164 $(Q)$(RM) -r $(EXTRA_CLEAN) 165 $(Q)$(MAKE) -C test_kmods clean 166 $(Q)$(MAKE) -C libarena clean 167 $(Q)$(MAKE) docs-clean 168endef 169 170include ../lib.mk 171 172NON_CHECK_FEAT_TARGETS := clean docs-clean emit_tests 173CHECK_FEAT := $(filter-out $(NON_CHECK_FEAT_TARGETS),$(or $(MAKECMDGOALS), "none")) 174ifneq ($(CHECK_FEAT),) 175FEATURE_USER := .selftests 176FEATURE_TESTS := llvm 177FEATURE_DISPLAY := $(FEATURE_TESTS) 178 179# Makefile.feature expects OUTPUT to end with a slash 180ifeq ($(shell expr $(MAKE_VERSION) \>= 4.4), 1) 181$(let OUTPUT,$(OUTPUT)/,\ 182 $(eval include ../../../build/Makefile.feature)) 183else 184override OUTPUT := $(OUTPUT)/ 185$(eval include ../../../build/Makefile.feature) 186override OUTPUT := $(patsubst %/,%,$(OUTPUT)) 187endif 188endif 189 190ifneq ($(SKIP_LLVM),1) 191ifeq ($(feature-llvm),1) 192 LLVM_CFLAGS += -DHAVE_LLVM_SUPPORT 193 LLVM_CONFIG_LIB_COMPONENTS := mcdisassembler all-targets 194 # both llvm-config and lib.mk add -D_GNU_SOURCE, which ends up as conflict 195 LLVM_CFLAGS += $(filter-out -D_GNU_SOURCE,$(shell $(LLVM_CONFIG) --cflags)) 196 # Cross compilation must use dynamic linking to avoid unresolved library 197 # dependencies. For native build, prefer linking statically if it's 198 # available, otherwise fallback to shared. 199 ifneq ($(ARCH), $(HOSTARCH)) 200 LLVM_LINK_STATIC := 201 else 202 LLVM_LINK_STATIC := $(shell $(LLVM_CONFIG) --link-static --libs >/dev/null 2>&1 && echo y) 203 endif 204 ifeq ($(LLVM_LINK_STATIC),y) 205 LLVM_LDLIBS += $(shell $(LLVM_CONFIG) --link-static --libs $(LLVM_CONFIG_LIB_COMPONENTS)) 206 LLVM_LDLIBS += $(filter-out -lxml2,$(shell $(LLVM_CONFIG) --link-static --system-libs $(LLVM_CONFIG_LIB_COMPONENTS))) 207 LLVM_LDLIBS += -lstdc++ 208 else 209 LLVM_LDLIBS += $(shell $(LLVM_CONFIG) --link-shared --libs $(LLVM_CONFIG_LIB_COMPONENTS)) 210 endif 211 LLVM_LDFLAGS += $(shell $(LLVM_CONFIG) --ldflags) 212endif 213endif 214 215SCRATCH_DIR := $(OUTPUT)/tools 216BUILD_DIR := $(SCRATCH_DIR)/build 217INCLUDE_DIR := $(SCRATCH_DIR)/include 218BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a 219ifneq ($(CROSS_COMPILE),) 220HOST_BUILD_DIR := $(BUILD_DIR)/host 221HOST_SCRATCH_DIR := $(OUTPUT)/host-tools 222HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include 223else 224HOST_BUILD_DIR := $(BUILD_DIR) 225HOST_SCRATCH_DIR := $(SCRATCH_DIR) 226HOST_INCLUDE_DIR := $(INCLUDE_DIR) 227endif 228HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a 229RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids 230VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \ 231 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \ 232 ../../../../vmlinux \ 233 /sys/kernel/btf/vmlinux \ 234 /boot/vmlinux-$(shell uname -r) 235VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) 236ifeq ($(VMLINUX_BTF),) 237$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)") 238endif 239 240# Define simple and short `make test_progs`, `make test_maps`, etc targets 241# to build individual tests. 242# NOTE: Semicolon at the end is critical to override lib.mk's default static 243# rule for binaries. 244$(notdir $(TEST_GEN_PROGS) $(TEST_KMODS) \ 245 $(TEST_GEN_PROGS_EXTENDED)): %: $(OUTPUT)/% ; 246 247# sort removes libbpf duplicates when not cross-building 248MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \ 249 $(BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/bpftool \ 250 $(HOST_BUILD_DIR)/resolve_btfids \ 251 $(INCLUDE_DIR)) 252$(MAKE_DIRS): 253 $(call msg,MKDIR,,$@) 254 $(Q)mkdir -p $@ 255 256$(OUTPUT)/%.o: %.c 257 $(call msg,CC,,$@) 258 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@ 259 260$(OUTPUT)/%:%.c 261 $(call msg,BINARY,,$@) 262 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@ 263 264# LLVM's ld.lld doesn't support all the architectures, so use it only on x86 265ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 riscv)) 266LLD := lld 267else 268LLD := $(shell command -v $(LD)) 269endif 270 271# Filter out -static for liburandom_read.so and its dependent targets so that static builds 272# do not fail. Static builds leave urandom_read relying on system-wide shared libraries. 273$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c liburandom_read.map 274 $(call msg,LIB,,$@) 275 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \ 276 $(filter-out -static,$(COMMON_CFLAGS) $(LDFLAGS)) \ 277 $(filter %.c,$^) $(filter-out -static,$(LDLIBS)) \ 278 -Wno-unused-command-line-argument \ 279 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ 280 -Wl,--version-script=liburandom_read.map \ 281 -fPIC -shared -o $@ 282 283$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so 284 $(call msg,BINARY,,$@) 285 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \ 286 $(filter-out -static,$(COMMON_CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \ 287 -Wno-unused-command-line-argument \ 288 -lurandom_read $(filter-out -static,$(LDLIBS)) -L$(OUTPUT) \ 289 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ 290 -Wl,-rpath=. -o $@ 291 292$(OUTPUT)/sign-file: ../../../../scripts/sign-file.c 293 $(call msg,SIGN-FILE,,$@) 294 $(Q)$(CC) $(shell $(PKG_CONFIG) --cflags libcrypto 2> /dev/null) \ 295 -I$(srctree)/tools/include/uapi/ \ 296 $< -o $@ \ 297 $(shell $(PKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto) 298 299# This should really be a grouped target, but make versions before 4.3 don't 300# support that for regular rules. However, pattern matching rules are implicitly 301# treated as grouped even with older versions of make, so as a workaround, the 302# subst() turns the rule into a pattern matching rule 303$(addprefix test_kmods/,$(subst .ko,%ko,$(TEST_KMODS))): $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard test_kmods/Makefile test_kmods/*.[ch]) 304 $(Q)$(RM) test_kmods/*.ko test_kmods/*.mod.o # force re-compilation 305 $(Q)$(MAKE) $(submake_extras) -C test_kmods \ 306 $(if $(O),O=$(abspath $(O))) \ 307 $(if $(KBUILD_OUTPUT),KBUILD_OUTPUT=$(abspath $(KBUILD_OUTPUT)))\ 308 RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) \ 309 EXTRA_CFLAGS='' EXTRA_LDFLAGS='' 310 311$(TEST_KMOD_TARGETS): $(addprefix test_kmods/,$(TEST_KMODS)) 312 $(call msg,MOD,,$@) 313 $(Q)$(if $(PERMISSIVE),if [ -f test_kmods/$(@F) ]; then )cp test_kmods/$(@F) $@$(if $(PERMISSIVE),; fi) 314 315 316DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool 317ifneq ($(CROSS_COMPILE),) 318CROSS_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool 319TRUNNER_BPFTOOL := $(CROSS_BPFTOOL) 320USE_BOOTSTRAP := "" 321else 322TRUNNER_BPFTOOL := $(DEFAULT_BPFTOOL) 323USE_BOOTSTRAP := "bootstrap/" 324endif 325 326$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ) 327 328TESTING_HELPERS := $(OUTPUT)/testing_helpers.o 329CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o 330UNPRIV_HELPERS := $(OUTPUT)/unpriv_helpers.o 331TRACE_HELPERS := $(OUTPUT)/trace_helpers.o 332JSON_WRITER := $(OUTPUT)/json_writer.o 333CAP_HELPERS := $(OUTPUT)/cap_helpers.o 334NETWORK_HELPERS := $(OUTPUT)/network_helpers.o 335 336$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS) 337$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS) 338$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS) 339$(OUTPUT)/test_tag: $(TESTING_HELPERS) 340$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS) 341$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS) 342$(OUTPUT)/test_maps: $(TESTING_HELPERS) 343$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) $(UNPRIV_HELPERS) 344$(OUTPUT)/xsk.o: $(BPFOBJ) 345 346BPFTOOL ?= $(DEFAULT_BPFTOOL) 347$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 348 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool 349 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 350 ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" \ 351 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)' \ 352 EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)' \ 353 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 354 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 355 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \ 356 SKIP_LLVM=$(SKIP_LLVM) \ 357 SKIP_LIBBFD=$(SKIP_LIBBFD) \ 358 SKIP_CRYPTO=$(SKIP_CRYPTO) \ 359 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin 360 361ifneq ($(CROSS_COMPILE),) 362$(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 363 $(BPFOBJ) | $(BUILD_DIR)/bpftool 364 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 365 ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) \ 366 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)' \ 367 EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)' \ 368 OUTPUT=$(BUILD_DIR)/bpftool/ \ 369 LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/ \ 370 LIBBPF_DESTDIR=$(SCRATCH_DIR)/ \ 371 SKIP_LLVM=$(SKIP_LLVM) \ 372 SKIP_LIBBFD=$(SKIP_LIBBFD) \ 373 SKIP_CRYPTO=$(SKIP_CRYPTO) \ 374 prefix= DESTDIR=$(SCRATCH_DIR)/ install-bin 375endif 376 377ifneq ($(SKIP_DOCS),1) 378all: docs 379endif 380 381docs: 382 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \ 383 -f Makefile.docs \ 384 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 385 386docs-clean: 387 $(Q)$(MAKE) $(submake_extras) \ 388 -f Makefile.docs \ 389 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 390 391$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 392 $(APIDIR)/linux/bpf.h \ 393 | $(BUILD_DIR)/libbpf 394 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \ 395 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)' \ 396 EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)' \ 397 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers 398 399ifneq ($(BPFOBJ),$(HOST_BPFOBJ)) 400$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 401 $(APIDIR)/linux/bpf.h \ 402 | $(HOST_BUILD_DIR)/libbpf 403 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \ 404 ARCH= CROSS_COMPILE= \ 405 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)' \ 406 EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \ 407 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 408 CC="$(HOSTCC)" LD="$(HOSTLD)" \ 409 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers 410endif 411 412# vmlinux.h is first dumped to a temporary file and then compared to 413# the previous version. This helps to avoid unnecessary re-builds of 414# $(TRUNNER_BPF_OBJS) 415$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR) 416ifeq ($(VMLINUX_H),) 417 $(call msg,GEN,,$@) 418 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $(INCLUDE_DIR)/.vmlinux.h.tmp 419 $(Q)cmp -s $(INCLUDE_DIR)/.vmlinux.h.tmp $@ || mv $(INCLUDE_DIR)/.vmlinux.h.tmp $@ 420else 421 $(call msg,CP,,$@) 422 $(Q)cp "$(VMLINUX_H)" $@ 423endif 424 425$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \ 426 $(TOOLSDIR)/bpf/resolve_btfids/main.c \ 427 $(TOOLSDIR)/lib/rbtree.c \ 428 $(TOOLSDIR)/lib/zalloc.c \ 429 $(TOOLSDIR)/lib/string.c \ 430 $(TOOLSDIR)/lib/ctype.c \ 431 $(TOOLSDIR)/lib/str_error_r.c 432 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \ 433 CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \ 434 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \ 435 EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)' \ 436 HOSTPKG_CONFIG='$(PKG_CONFIG)' \ 437 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ) 438 439# Get Clang's default includes on this system, as opposed to those seen by 440# '--target=bpf'. This fixes "missing" files on some architectures/distros, 441# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 442# 443# Use '-idirafter': Don't interfere with include mechanics except where the 444# build would have failed anyways. 445define get_sys_includes 446$(shell $(1) $(2) -v -E - </dev/null 2>&1 \ 447 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \ 448$(shell $(1) $(2) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') \ 449$(shell $(1) $(2) -dM -E - </dev/null | grep '__loongarch_grlen ' | awk '{printf("-D__BITS_PER_LONG=%d", $$3)}') \ 450$(shell $(1) $(2) -dM -E - </dev/null | grep -E 'MIPS(EL|EB)|_MIPS_SZ(PTR|LONG) |_MIPS_SIM |_ABI(O32|N32|64) ' | awk '{printf("-D%s=%s ", $$2, $$3)}') 451endef 452 453# Determine target endianness. 454IS_LITTLE_ENDIAN := $(shell $(CC) -dM -E - </dev/null | \ 455 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__') 456MENDIAN:=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian) 457BPF_TARGET_ENDIAN:=$(if $(IS_LITTLE_ENDIAN),--target=bpfel,--target=bpfeb) 458 459ifneq ($(CROSS_COMPILE),) 460CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_COMPILE:%-=%)) 461endif 462 463CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARCH)) 464BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ 465 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \ 466 -I$(TOOLSINCDIR) -I$(CURDIR)/libarena/include \ 467 -I$(abspath $(OUTPUT)/../usr/include) \ 468 -std=gnu11 \ 469 -fno-strict-aliasing \ 470 -Wno-microsoft-anon-tag \ 471 -fms-extensions \ 472 -Wno-compare-distinct-pointer-types \ 473 -Wno-initializer-overrides \ 474 # 475# TODO: enable me -Wsign-compare 476 477CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) 478 479$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline 480$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline 481 482$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h 483$(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h 484 485# Build BPF object using Clang 486# $1 - input .c file 487# $2 - output .o file 488# $3 - CFLAGS 489# $4 - binary name 490define CLANG_BPF_BUILD_RULE 491 $(call msg,CLNG-BPF,$4,$2) 492 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v3 -o $2 $(if $(PERMISSIVE),|| \ 493 ($(RM) $2; printf ' %-12s %s\n' 'SKIP-BPF' '$(notdir $2)' 1>&2)) 494endef 495# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32 496define CLANG_NOALU32_BPF_BUILD_RULE 497 $(call msg,CLNG-BPF,$4,$2) 498 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v2 -o $2 $(if $(PERMISSIVE),|| \ 499 ($(RM) $2; printf ' %-12s %s\n' 'SKIP-BPF' '$(notdir $2)' 1>&2)) 500endef 501# Similar to CLANG_BPF_BUILD_RULE, but with cpu-v4 502define CLANG_CPUV4_BPF_BUILD_RULE 503 $(call msg,CLNG-BPF,$4,$2) 504 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v4 -o $2 $(if $(PERMISSIVE),|| \ 505 ($(RM) $2; printf ' %-12s %s\n' 'SKIP-BPF' '$(notdir $2)' 1>&2)) 506endef 507# Build BPF object using GCC 508define GCC_BPF_BUILD_RULE 509 $(call msg,GCC-BPF,$4,$2) 510 $(Q)$(BPF_GCC) $3 -DBPF_NO_PRESERVE_ACCESS_INDEX -Wno-attributes -O2 -c $1 -o $2 $(if $(PERMISSIVE),|| \ 511 ($(RM) $2; printf ' %-12s %s\n' 'SKIP-BPF' '$(notdir $2)' 1>&2)) 512endef 513 514SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c 515 516LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \ 517 linked_vars.skel.h linked_maps.skel.h \ 518 test_subskeleton.skel.h test_subskeleton_lib.skel.h \ 519 test_usdt.skel.h tracing_multi.skel.h \ 520 tracing_multi_module.skel.h \ 521 tracing_multi_intersect.skel.h \ 522 tracing_multi_session.skel.h 523 524LSKELS := fexit_sleep.c trace_printk.c trace_vprintk.c map_ptr_kern.c \ 525 core_kern.c core_kern_overflow.c test_ringbuf.c \ 526 test_ringbuf_n.c test_ringbuf_map_key.c test_ringbuf_write.c \ 527 test_ringbuf_overwrite.c 528 529LSKELS_SIGNED := fentry_test.c fexit_test.c atomics.c 530 531# Generate both light skeleton and libbpf skeleton for these 532LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test.c \ 533 kfunc_call_test_subprog.c test_global_percpu_data.c 534SKEL_BLACKLIST += $$(LSKELS) $$(LSKELS_SIGNED) 535 536test_static_linked.skel.h-deps := test_static_linked1.bpf.o test_static_linked2.bpf.o 537linked_funcs.skel.h-deps := linked_funcs1.bpf.o linked_funcs2.bpf.o 538linked_vars.skel.h-deps := linked_vars1.bpf.o linked_vars2.bpf.o 539linked_maps.skel.h-deps := linked_maps1.bpf.o linked_maps2.bpf.o 540# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file 541# but that's created as a side-effect of the skel.h generation. 542test_subskeleton.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o test_subskeleton.bpf.o 543test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o 544test_usdt.skel.h-deps := test_usdt.bpf.o test_usdt_multispec.bpf.o 545xsk_xdp_progs.skel.h-deps := xsk_xdp_progs.bpf.o 546xdp_hw_metadata.skel.h-deps := xdp_hw_metadata.bpf.o 547xdp_features.skel.h-deps := xdp_features.bpf.o 548tracing_multi.skel.h-deps := tracing_multi_attach.bpf.o tracing_multi_check.bpf.o 549tracing_multi_module.skel.h-deps := tracing_multi_attach_module.bpf.o tracing_multi_check.bpf.o 550tracing_multi_intersect.skel.h-deps := tracing_multi_intersect_attach.bpf.o tracing_multi_check.bpf.o 551tracing_multi_session.skel.h-deps := tracing_multi_session_attach.bpf.o tracing_multi_check.bpf.o 552 553LINKED_BPF_OBJS := $(foreach skel,$(LINKED_SKELS),$($(skel)-deps)) 554LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(LINKED_BPF_OBJS)) 555 556HEADERS_FOR_BPF_OBJS := $(wildcard $(BPFDIR)/*.bpf.h) \ 557 $(wildcard $(CURDIR)/libarena/include/*.[ch]) \ 558 $(addprefix $(BPFDIR)/, bpf_core_read.h \ 559 bpf_endian.h \ 560 bpf_helpers.h \ 561 bpf_tracing.h) 562 563# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on 564# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES. 565# Parameters: 566# $1 - test runner base binary name (e.g., test_progs) 567# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, bpf_gcc, etc) 568define DEFINE_TEST_RUNNER 569 570LSKEL_SIGN := -S -k $(PRIVATE_KEY) -i $(VERIFICATION_CERT) 571TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2 572TRUNNER_BINARY := $1$(if $2,-)$2 573TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \ 574 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c))) 575TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \ 576 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES))) 577TRUNNER_LIB_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \ 578 $$(filter %.c,$(TRUNNER_LIB_SOURCES))) 579TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES)) 580TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h 581TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c)) 582TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.bpf.o, $$(TRUNNER_BPF_SRCS)) 583TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \ 584 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\ 585 $$(TRUNNER_BPF_SRCS))) 586TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA)) 587TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS)) 588TRUNNER_BPF_LSKELS_SIGNED := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS_SIGNED)) 589TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS) 590 591# Evaluate rules now with extra TRUNNER_XXX variables above already defined 592$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2)) 593 594endef 595 596# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and 597# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with: 598# $1 - test runner base binary name (e.g., test_progs) 599# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, bpf_gcc, etc) 600define DEFINE_TEST_RUNNER_RULES 601 602# Permissive build behaviour (skip-on-failure compile, partial-link) only 603# applies to test_progs and its flavors; runners that use strong cross-object 604# references (e.g. test_maps) keep strict semantics even when permissive. 605# The check is inlined per-runner so $1 is substituted at $(call) time and 606# the result is baked into each rule's recipe. 607 608ifeq ($($(TRUNNER_OUTPUT)-dir),) 609$(TRUNNER_OUTPUT)-dir := y 610$(TRUNNER_OUTPUT): 611 $$(call msg,MKDIR,,$$@) 612 $(Q)mkdir -p $$@ 613endif 614 615# ensure we set up BPF objects generation rule just once for a given 616# input/output directory combination 617ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),) 618$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y 619$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o: \ 620 $(TRUNNER_BPF_PROGS_DIR)/%.c \ 621 $(TRUNNER_BPF_PROGS_DIR)/*.h \ 622 $$(INCLUDE_DIR)/vmlinux.h \ 623 $(HEADERS_FOR_BPF_OBJS) \ 624 | $(TRUNNER_OUTPUT) $$(BPFOBJ) 625 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \ 626 $(TRUNNER_BPF_CFLAGS) \ 627 $$($$<-CFLAGS) \ 628 $$($$<-$2-CFLAGS),$(TRUNNER_BINARY)) 629 630$(TRUNNER_BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 631 $(Q)$(if $(PERMISSIVE),if [ ! -f $$< ]; then \ 632 $$(RM) $$@ $$(@:.skel.h=.subskel.h); \ 633 printf ' %-12s %s\n' 'SKIP-SKEL' '$$(notdir $$@)' 1>&2; \ 634 exit 0; \ 635 fi;) \ 636 printf ' %-12s %s\n' 'GEN-SKEL' '[$(TRUNNER_BINARY)] $$(notdir $$@)' 1>&2; \ 637 $$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$< && \ 638 $$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o) && \ 639 $$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o) && \ 640 diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o) && \ 641 $$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$@ && \ 642 $$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$(@:.skel.h=.subskel.h) $(if $(PERMISSIVE),|| { \ 643 $$(RM) $$@ $$(@:.skel.h=.subskel.h); \ 644 printf ' %-12s %s\n' 'SKIP-SKEL' '$$(notdir $$@)' 1>&2; \ 645 }) && \ 646 rm -f $$(<:.o=.linked1.o) $$(<:.o=.linked2.o) $$(<:.o=.linked3.o) 647 648$(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 649 $(Q)$(if $(PERMISSIVE),if [ ! -f $$< ]; then \ 650 $$(RM) $$@; \ 651 printf ' %-12s %s\n' 'SKIP-SKEL' '$$(notdir $$@)' 1>&2; \ 652 exit 0; \ 653 fi;) \ 654 printf ' %-12s %s\n' 'GEN-SKEL' '[$(TRUNNER_BINARY)] $$(notdir $$@)' 1>&2; \ 655 $$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$< && \ 656 $$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o) && \ 657 $$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o) && \ 658 diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o) && \ 659 $$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@ $(if $(PERMISSIVE),|| { \ 660 $$(RM) $$@; \ 661 printf ' %-12s %s\n' 'SKIP-SKEL' '$$(notdir $$@)' 1>&2; \ 662 }) && \ 663 rm -f $$(<:.o=.llinked1.o) $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o) 664 665$(TRUNNER_BPF_LSKELS_SIGNED): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 666 $(Q)$(if $(PERMISSIVE),if [ ! -f $$< ]; then \ 667 $$(RM) $$@; \ 668 printf ' %-12s %s\n' 'SKIP-SKEL' '$$(notdir $$@)' 1>&2; \ 669 exit 0; \ 670 fi;) \ 671 printf ' %-12s %s\n' 'GEN-SKEL' '[$(TRUNNER_BINARY) (signed)] $$(notdir $$@)' 1>&2; \ 672 $$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$< && \ 673 $$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o) && \ 674 $$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o) && \ 675 diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o) && \ 676 $$(BPFTOOL) gen skeleton $(LSKEL_SIGN) $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@ $(if $(PERMISSIVE),|| { \ 677 $$(RM) $$@; \ 678 printf ' %-12s %s\n' 'SKIP-SKEL' '$$(notdir $$@)' 1>&2; \ 679 }) && \ 680 rm -f $$(<:.o=.llinked1.o) $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o) 681 682$(LINKED_BPF_OBJS): %: $(TRUNNER_OUTPUT)/% 683 684# .SECONDEXPANSION here allows to correctly expand %-deps variables as prerequisites 685.SECONDEXPANSION: 686$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_OUTPUT)/%: $$$$(%-deps) $(BPFTOOL) | $(TRUNNER_OUTPUT) 687 $(Q)$(if $(PERMISSIVE),for f in $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps)); do \ 688 if [ ! -f $$$$f ]; then \ 689 $$(RM) $$@ $$(@:.skel.h=.subskel.h); \ 690 printf ' %-12s %s\n' 'SKIP-SKEL' '$$(notdir $$@)' 1>&2; \ 691 exit 0; \ 692 fi; \ 693 done;) \ 694 printf ' %-12s %s\n' 'LINK-BPF' '[$(TRUNNER_BINARY)] $$(notdir $$(@:.skel.h=.bpf.o))' 1>&2; \ 695 $$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps)) && \ 696 $$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o) && \ 697 $$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o) && \ 698 diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o) && \ 699 printf ' %-12s %s\n' 'GEN-SKEL' '[$(TRUNNER_BINARY)] $$(notdir $$@)' 1>&2 && \ 700 $$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@ && \ 701 $$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h) $(if $(PERMISSIVE),|| { \ 702 $$(RM) $$@ $$(@:.skel.h=.subskel.h); \ 703 printf ' %-12s %s\n' 'SKIP-SKEL' '$$(notdir $$@)' 1>&2; \ 704 }) && \ 705 rm -f $$(@:.skel.h=.linked1.o) $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o) 706 707# When the compiler generates a %.d file, only skel basenames (not 708# full paths) are specified as prerequisites for corresponding %.o 709# file. vpath directives below instruct make to search for skel files 710# in TRUNNER_OUTPUT, if they are not present in the working directory. 711vpath %.skel.h $(TRUNNER_OUTPUT) 712vpath %.lskel.h $(TRUNNER_OUTPUT) 713vpath %.subskel.h $(TRUNNER_OUTPUT) 714 715endif 716 717# ensure we set up tests.h header generation rule just once 718ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),) 719$(TRUNNER_TESTS_DIR)-tests-hdr := y 720$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c 721 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@) 722 $$(shell (echo '/* Generated header, do not edit */'; \ 723 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \ 724 $(TRUNNER_TESTS_DIR)/*.c | sort ; \ 725 ) > $$@) 726endif 727 728$(TRUNNER_OUTPUT)/resolve_btfids.test.o: $(RESOLVE_BTFIDS) $(TRUNNER_OUTPUT)/btf_data.bpf.o 729$(TRUNNER_OUTPUT)/resolve_btfids.test.o: private TEST_NEEDS_BTFIDS = 1 730 731# compile individual test files 732# Note: we cd into output directory to ensure embedded BPF object is found 733$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \ 734 $(TRUNNER_TESTS_DIR)/%.c \ 735 | $(TRUNNER_OUTPUT)/%.test.d 736 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@) 737 $(Q)(cd $$(@D) && $$(CC) -I. $$(CFLAGS) -MMD -MT $$@ -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F)) $(if $(filter test_progs%,$1),$(if $(PERMISSIVE),|| \ 738 ($(RM) $$@; printf ' %-12s %s\n' 'SKIP-TEST' '$$(notdir $$@)' 1>&2))) 739 $$(if $$(TEST_NEEDS_BTFIDS), \ 740 $(Q)if [ -f $$@ ]; then \ 741 $(if $(filter 1,$(V)),true,printf ' %-8s%s %s\n' "BTFIDS" " [$(TRUNNER_BINARY)]" "$$(notdir $$@)"); \ 742 $(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.bpf.o $$@; \ 743 $(RESOLVE_BTFIDS) --patch_btfids $$@.BTF_ids $$@; \ 744 fi) 745 746$(TRUNNER_TEST_OBJS:.o=.d): $(TRUNNER_OUTPUT)/%.test.d: \ 747 $(TRUNNER_TESTS_DIR)/%.c \ 748 $(TRUNNER_EXTRA_HDRS) \ 749 $$(BPFOBJ) | $(TRUNNER_OUTPUT) \ 750 $(TRUNNER_BPF_SKELS) \ 751 $(TRUNNER_BPF_LSKELS) \ 752 $(TRUNNER_BPF_LSKELS_SIGNED) \ 753 $(TRUNNER_BPF_SKELS_LINKED) 754 755ifeq ($(filter clean docs-clean emit_tests,$(MAKECMDGOALS)),) 756include $(wildcard $(TRUNNER_TEST_OBJS:.o=.d)) 757endif 758 759# add per extra obj CFGLAGS definitions 760$(foreach N,$(patsubst $(TRUNNER_OUTPUT)/%.o,%,$(TRUNNER_EXTRA_OBJS)), \ 761 $(eval $(TRUNNER_OUTPUT)/$(N).o: CFLAGS += $($(N).c-CFLAGS))) 762 763$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \ 764 %.c \ 765 $(TRUNNER_EXTRA_HDRS) \ 766 $(VERIFY_SIG_HDR) \ 767 $(TRUNNER_TESTS_HDR) \ 768 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 769 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@) 770 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@ 771 772$(TRUNNER_LIB_OBJS): $(TRUNNER_OUTPUT)/%.o:$(TOOLSDIR)/lib/%.c 773 $$(call msg,LIB-OBJ,$(TRUNNER_BINARY),$$@) 774 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@ 775 776# non-flavored in-srctree builds receive special treatment, in particular, we 777# do not need to copy extra resources (see e.g. test_btf_dump_case()) 778$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT) 779ifneq ($2:$(OUTPUT),:$(shell pwd)) 780 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES)) 781 $(Q)rsync -aq $(if $(PERMISSIVE),--ignore-missing-args) $$^ $(TRUNNER_OUTPUT)/ 782endif 783 784# some X.test.o files have runtime dependencies on Y.bpf.o files 785$(OUTPUT)/$(TRUNNER_BINARY): | $(TRUNNER_BPF_OBJS) 786 787$(OUTPUT)/$(TRUNNER_BINARY): $(if $(filter test_progs%,$1),$(if $(PERMISSIVE),$$(wildcard $(TRUNNER_TEST_OBJS)),$(TRUNNER_TEST_OBJS)),$(TRUNNER_TEST_OBJS)) \ 788 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \ 789 $(TRUNNER_LIB_OBJS) \ 790 $(TRUNNER_BPFTOOL) \ 791 $(OUTPUT)/veristat \ 792 | $(TRUNNER_BINARY)-extras \ 793 $(if $(filter test_progs%,$1),$(if $(PERMISSIVE),$(TRUNNER_TEST_OBJS))) 794 $$(call msg,BINARY,,$$@) 795 $(Q)$$(CC) $$(CFLAGS) $(if $(filter test_progs%,$1),$(if $(PERMISSIVE),$$(filter %.a %.o,$$(wildcard $(TRUNNER_TEST_OBJS)) $$(filter-out $(TRUNNER_TEST_OBJS),$$^)),$$(filter %.a %.o,$$^)),$$(filter %.a %.o,$$^)) $$(LDLIBS) $$(LLVM_LDLIBS) $$(LDFLAGS) $$(LLVM_LDFLAGS) -o $$@ 796 $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/$(USE_BOOTSTRAP)bpftool \ 797 $(OUTPUT)/$(if $2,$2/)bpftool 798 799endef 800 801VERIFY_SIG_SETUP := $(CURDIR)/verify_sig_setup.sh 802VERIFY_SIG_HDR := verification_cert.h 803VERIFICATION_CERT := $(BUILD_DIR)/signing_key.der 804PRIVATE_KEY := $(BUILD_DIR)/signing_key.pem 805 806$(VERIFICATION_CERT) $(PRIVATE_KEY): $(VERIFY_SIG_SETUP) 807 $(Q)mkdir -p $(BUILD_DIR) 808 $(Q)$(VERIFY_SIG_SETUP) genkey $(BUILD_DIR) 809 810# Generates a header with C array declaration, containing test_progs_verification_cert bytes 811$(VERIFY_SIG_HDR): $(VERIFICATION_CERT) 812 $(Q)(echo "unsigned char test_progs_verification_cert[] = {"; \ 813 od -v -t 'xC' -w12 $< | sed 's/ \(\S\+\)/ 0x\1,/g;s/^\S\+/ /;$$d'; \ 814 echo "};"; \ 815 echo "unsigned int test_progs_verification_cert_len = $$(wc -c < $<);") > $@ 816 817LIBARENA_MAKE_ARGS = \ 818 BPFTOOL="$(BPFTOOL)" \ 819 INCLUDE_DIR="$(INCLUDE_DIR)" \ 820 LIBBPF_INCLUDE="$(HOST_INCLUDE_DIR)" \ 821 BPFOBJ="$(BPFOBJ)" \ 822 LDLIBS="$(LDLIBS) -lzstd" \ 823 CLANG="$(CLANG)" \ 824 BPF_CFLAGS="$(BPF_CFLAGS) $(CLANG_CFLAGS)" \ 825 BPF_TARGET_ENDIAN="$(BPF_TARGET_ENDIAN)" \ 826 Q="$(Q)" 827 828LIBARENA_BPF_DEPS := $(wildcard libarena/Makefile \ 829 libarena/include/* \ 830 libarena/include/libarena/* \ 831 libarena/src/* \ 832 libarena/selftests/* \ 833 libarena/*.bpf.o) 834 835LIBARENA_SKEL := libarena/libarena.skel.h 836 837$(LIBARENA_SKEL): $(INCLUDE_DIR)/vmlinux.h $(BPFOBJ) $(LIBARENA_BPF_DEPS) 838 +$(MAKE) -C libarena libarena.skel.h $(LIBARENA_MAKE_ARGS) 839 840ifneq ($(CLANG_HAS_ARENA_ASAN),) 841LIBARENA_ASAN_SKEL := libarena/libarena_asan.skel.h 842CFLAGS += -DHAS_BPF_ARENA_ASAN 843 844$(LIBARENA_ASAN_SKEL): $(INCLUDE_DIR)/vmlinux.h $(BPFOBJ) $(LIBARENA_BPF_DEPS) 845 +$(MAKE) -C libarena libarena_asan.skel.h $(LIBARENA_MAKE_ARGS) 846endif 847 848# Define test_progs test runner. 849TRUNNER_TESTS_DIR := prog_tests 850TRUNNER_BPF_PROGS_DIR := progs 851TRUNNER_EXTRA_SOURCES := test_progs.c \ 852 cgroup_helpers.c \ 853 trace_helpers.c \ 854 network_helpers.c \ 855 testing_helpers.c \ 856 btf_helpers.c \ 857 cap_helpers.c \ 858 unpriv_helpers.c \ 859 sysctl_helpers.c \ 860 netlink_helpers.c \ 861 jit_disasm_helpers.c \ 862 io_helpers.c \ 863 test_loader.c \ 864 xsk.c \ 865 disasm.c \ 866 disasm_helpers.c \ 867 json_writer.c \ 868 $(VERIFY_SIG_HDR) \ 869 flow_dissector_load.h \ 870 ip_check_defrag_frags.h \ 871 bpftool_helpers.c \ 872 usdt_1.c usdt_2.c \ 873 $(LIBARENA_SKEL) \ 874 $(LIBARENA_ASAN_SKEL) 875TRUNNER_LIB_SOURCES := find_bit.c 876TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read \ 877 $(OUTPUT)/liburandom_read.so \ 878 $(OUTPUT)/xdp_synproxy \ 879 $(OUTPUT)/sign-file \ 880 $(OUTPUT)/uprobe_multi \ 881 $(TEST_KMOD_TARGETS) \ 882 ima_setup.sh \ 883 $(VERIFY_SIG_SETUP) \ 884 $(wildcard progs/btf_dump_test_case_*.c) \ 885 $(wildcard progs/*.bpf.o) 886TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE 887TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS 888$(eval $(call DEFINE_TEST_RUNNER,test_progs)) 889 890# Define test_progs-no_alu32 test runner. 891TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE 892TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) 893$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32)) 894 895# Define test_progs-cpuv4 test runner. 896ifneq ($(CLANG_CPUV4),) 897TRUNNER_BPF_BUILD_RULE := CLANG_CPUV4_BPF_BUILD_RULE 898TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS 899$(eval $(call DEFINE_TEST_RUNNER,test_progs,cpuv4)) 900endif 901 902# Define test_progs BPF-GCC-flavored test runner. 903ifneq ($(BPF_GCC),) 904TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE 905TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc,) 906$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc)) 907endif 908 909# Define test_maps test runner. 910TRUNNER_TESTS_DIR := map_tests 911TRUNNER_BPF_PROGS_DIR := progs 912TRUNNER_EXTRA_SOURCES := test_maps.c 913TRUNNER_LIB_SOURCES := 914TRUNNER_EXTRA_FILES := 915TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built) 916TRUNNER_BPF_CFLAGS := 917$(eval $(call DEFINE_TEST_RUNNER,test_maps)) 918 919# Define test_verifier test runner. 920# It is much simpler than test_maps/test_progs and sufficiently different from 921# them (e.g., test.h is using completely pattern), that it's worth just 922# explicitly defining all the rules explicitly. 923verifier/tests.h: verifier/*.c 924 $(shell ( cd verifier/; \ 925 echo '/* Generated header, do not edit */'; \ 926 echo '#ifdef FILL_ARRAY'; \ 927 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \ 928 echo '#endif' \ 929 ) > verifier/tests.h) 930$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT) 931 $(call msg,BINARY,,$@) 932 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 933 934# Keep xskxceiver independent from test_progs object dependencies. 935$(OUTPUT)/xskxceiver: xskxceiver.c xsk.c network_helpers.c \ 936 $(TOOLSDIR)/lib/find_bit.c prog_tests/test_xsk.c \ 937 xskxceiver.h xsk.h network_helpers.h \ 938 prog_tests/test_xsk.h test_progs.h bpf_util.h \ 939 $(OUTPUT)/xsk_xdp_progs.skel.h $(BPFOBJ) | $(OUTPUT) 940 $(call msg,BINARY,,$@) 941 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 942 943$(OUTPUT)/xdp_hw_metadata: xdp_hw_metadata.c xsk.c network_helpers.c \ 944 $(TOOLSDIR)/lib/find_bit.c xdp_metadata.h \ 945 xsk.h network_helpers.h test_progs.h bpf_util.h \ 946 $(OUTPUT)/xdp_hw_metadata.skel.h $(BPFOBJ) | $(OUTPUT) 947 $(call msg,BINARY,,$@) 948 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 949 950$(OUTPUT)/xdp_features: xdp_features.c network_helpers.c xdp_features.h \ 951 network_helpers.h \ 952 test_progs.h bpf_util.h $(OUTPUT)/xdp_features.skel.h \ 953 $(BPFOBJ) | $(OUTPUT) 954 $(call msg,BINARY,,$@) 955 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 956 957# Make sure we are able to include and link libbpf against c++. 958CXXFLAGS += $(CFLAGS) 959CXXFLAGS := $(subst -D_GNU_SOURCE=,,$(CXXFLAGS)) 960CXXFLAGS := $(subst -std=gnu11,-std=gnu++11,$(CXXFLAGS)) 961$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ) 962 $(call msg,CXX,,$@) 963 $(Q)$(CXX) $(CXXFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@ 964 965# Benchmark runner 966$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ) 967 $(call msg,CC,,$@) 968 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@ $(if $(PERMISSIVE),|| \ 969 ($(RM) $@; printf ' %-12s %s\n' 'SKIP-BENCH' '$(notdir $@)' 1>&2)) 970$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h 971$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h 972$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \ 973 $(OUTPUT)/perfbuf_bench.skel.h 974$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h 975$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h 976$(OUTPUT)/bench_bpf_for.o: $(OUTPUT)/bpf_for_bench.skel.h 977$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h 978$(OUTPUT)/bench_bpf_hashmap_full_update.o: $(OUTPUT)/bpf_hashmap_full_update_bench.skel.h 979$(OUTPUT)/bench_local_storage.o: $(OUTPUT)/local_storage_bench.skel.h 980$(OUTPUT)/bench_local_storage_rcu_tasks_trace.o: $(OUTPUT)/local_storage_rcu_tasks_trace_bench.skel.h 981$(OUTPUT)/bench_local_storage_create.o: $(OUTPUT)/bench_local_storage_create.skel.h 982$(OUTPUT)/bench_bpf_hashmap_lookup.o: $(OUTPUT)/bpf_hashmap_lookup.skel.h 983$(OUTPUT)/bench_htab_mem.o: $(OUTPUT)/htab_mem_bench.skel.h 984$(OUTPUT)/bench_bpf_crypto.o: $(OUTPUT)/crypto_bench.skel.h 985$(OUTPUT)/bench_sockmap.o: $(OUTPUT)/bench_sockmap_prog.skel.h 986$(OUTPUT)/bench_lpm_trie_map.o: $(OUTPUT)/lpm_trie_bench.skel.h $(OUTPUT)/lpm_trie_map.skel.h 987$(OUTPUT)/bench_bpf_nop.o: $(OUTPUT)/bpf_nop_bench.skel.h bench_bpf_timing.h 988$(OUTPUT)/bench_xdp_lb.o: $(OUTPUT)/xdp_lb_bench.skel.h bench_bpf_timing.h 989$(OUTPUT)/bench_bpf_timing.o: bench_bpf_timing.h 990$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ) 991$(OUTPUT)/bench: LDLIBS += -lm 992$(OUTPUT)/bench: $(OUTPUT)/bench.o \ 993 $(TESTING_HELPERS) \ 994 $(TRACE_HELPERS) \ 995 $(CGROUP_HELPERS) \ 996 $(OUTPUT)/bench_count.o \ 997 $(OUTPUT)/bench_rename.o \ 998 $(OUTPUT)/bench_trigger.o \ 999 $(OUTPUT)/bench_ringbufs.o \ 1000 $(OUTPUT)/bench_bloom_filter_map.o \ 1001 $(OUTPUT)/bench_bpf_loop.o \ 1002 $(OUTPUT)/bench_bpf_for.o \ 1003 $(OUTPUT)/bench_strncmp.o \ 1004 $(OUTPUT)/bench_bpf_hashmap_full_update.o \ 1005 $(OUTPUT)/bench_local_storage.o \ 1006 $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o \ 1007 $(OUTPUT)/bench_bpf_hashmap_lookup.o \ 1008 $(OUTPUT)/bench_local_storage_create.o \ 1009 $(OUTPUT)/bench_htab_mem.o \ 1010 $(OUTPUT)/bench_bpf_crypto.o \ 1011 $(OUTPUT)/bench_sockmap.o \ 1012 $(OUTPUT)/bench_lpm_trie_map.o \ 1013 $(OUTPUT)/bench_bpf_timing.o \ 1014 $(OUTPUT)/bench_bpf_nop.o \ 1015 $(OUTPUT)/bench_xdp_lb.o \ 1016 $(OUTPUT)/usdt_1.o \ 1017 $(OUTPUT)/usdt_2.o \ 1018 # 1019 $(call msg,BINARY,,$@) 1020 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ $(if $(PERMISSIVE),|| \ 1021 ($(RM) $@; printf ' %-12s %s\n' 'SKIP-LINK' '$(notdir $@) (some benchmarks may have been skipped)' 1>&2)) 1022 1023# This works around GCC warning about snprintf truncating strings like: 1024# 1025# char a[PATH_MAX], b[PATH_MAX]; 1026# snprintf(a, "%s/foo", b); // triggers -Wformat-truncation 1027$(OUTPUT)/veristat.o: CFLAGS += -Wno-format-truncation 1028$(OUTPUT)/veristat.o: $(BPFOBJ) 1029$(OUTPUT)/veristat: $(OUTPUT)/veristat.o 1030 $(call msg,BINARY,,$@) 1031 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ 1032 1033# Linking uprobe_multi can fail due to relocation overflows on mips. 1034$(OUTPUT)/uprobe_multi: CFLAGS += $(if $(filter mips, $(ARCH)),-mxgot) 1035$(OUTPUT)/uprobe_multi: uprobe_multi.c uprobe_multi.ld 1036 $(call msg,BINARY,,$@) 1037 $(Q)$(CC) $(CFLAGS) -Wl,-T,uprobe_multi.ld -O0 $(LDFLAGS) \ 1038 $(filter-out %.ld,$^) $(LDLIBS) -o $@ 1039 1040EXTRA_CLEAN := $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \ 1041 prog_tests/tests.h map_tests/tests.h verifier/tests.h \ 1042 feature bpftool $(TEST_KMOD_TARGETS) \ 1043 $(addprefix $(OUTPUT)/,*.o *.d *.skel.h *.lskel.h *.subskel.h \ 1044 *.BTF *.BTF_ids *.BTF.base \ 1045 no_alu32 cpuv4 bpf_gcc \ 1046 liburandom_read.so) \ 1047 $(OUTPUT)/FEATURE-DUMP.selftests 1048 1049.PHONY: docs docs-clean 1050 1051# Delete partially updated (corrupted) files on error 1052.DELETE_ON_ERROR: 1053 1054# When permissive, tell rsync to ignore missing source arguments so that 1055# partial builds do not abort installation. 1056ifneq ($(PERMISSIVE),) 1057override define INSTALL_SINGLE_RULE 1058 $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)) 1059 $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links --ignore-missing-args $(INSTALL_LIST) $(INSTALL_PATH)/) 1060endef 1061endif 1062 1063DEFAULT_INSTALL_RULE := $(INSTALL_RULE) 1064override define INSTALL_RULE 1065 $(DEFAULT_INSTALL_RULE) 1066 @mkdir -p $(INSTALL_PATH)/tools/sbin 1067 @rsync -a $(if $(PERMISSIVE),--ignore-missing-args) $(TRUNNER_BPFTOOL) $(INSTALL_PATH)/tools/sbin/ 1068 @rsync -a $(if $(PERMISSIVE),--ignore-missing-args) $(OUTPUT)/*.BTF $(INSTALL_PATH)/ 1069 @for DIR in $(TEST_INST_SUBDIRS); do \ 1070 mkdir -p $(INSTALL_PATH)/$$DIR; \ 1071 rsync -a $(if $(PERMISSIVE),--ignore-missing-args) \ 1072 $(OUTPUT)/$$DIR/*.bpf.o $(OUTPUT)/$$DIR/*.BTF \ 1073 $(INSTALL_PATH)/$$DIR; \ 1074 done 1075endef 1076 1077libarena: $(LIBARENA_SKEL) 1078 1079ifneq ($(CLANG_HAS_ARENA_ASAN),) 1080libarena_asan: $(LIBARENA_ASAN_SKEL) 1081endif 1082