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