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