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