1# SPDX-License-Identifier: GPL-2.0 2include ../../../build/Build.include 3include ../../../scripts/Makefile.arch 4include ../../../scripts/Makefile.include 5 6CXX ?= $(CROSS_COMPILE)g++ 7 8CURDIR := $(abspath .) 9TOOLSDIR := $(abspath ../../..) 10LIBDIR := $(TOOLSDIR)/lib 11BPFDIR := $(LIBDIR)/bpf 12TOOLSINCDIR := $(TOOLSDIR)/include 13TOOLSARCHINCDIR := $(TOOLSDIR)/arch/$(SRCARCH)/include 14BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool 15APIDIR := $(TOOLSINCDIR)/uapi 16ifneq ($(O),) 17GENDIR := $(O)/include/generated 18else 19GENDIR := $(abspath ../../../../include/generated) 20endif 21GENHDR := $(GENDIR)/autoconf.h 22PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config 23 24ifneq ($(wildcard $(GENHDR)),) 25 GENFLAGS := -DHAVE_GENHDR 26endif 27 28BPF_GCC ?= $(shell command -v bpf-gcc;) 29SAN_CFLAGS ?= 30SAN_LDFLAGS ?= $(SAN_CFLAGS) 31RELEASE ?= 32OPT_FLAGS ?= $(if $(RELEASE),-O2,-O0) 33 34LIBELF_CFLAGS := $(shell $(PKG_CONFIG) libelf --cflags 2>/dev/null) 35LIBELF_LIBS := $(shell $(PKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf) 36 37ifeq ($(srctree),) 38srctree := $(patsubst %/,%,$(dir $(CURDIR))) 39srctree := $(patsubst %/,%,$(dir $(srctree))) 40srctree := $(patsubst %/,%,$(dir $(srctree))) 41srctree := $(patsubst %/,%,$(dir $(srctree))) 42endif 43 44CFLAGS += -g $(OPT_FLAGS) -rdynamic \ 45 -Wall -Werror -fno-omit-frame-pointer \ 46 $(GENFLAGS) $(SAN_CFLAGS) $(LIBELF_CFLAGS) \ 47 -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \ 48 -I$(TOOLSINCDIR) -I$(TOOLSARCHINCDIR) -I$(APIDIR) -I$(OUTPUT) 49LDFLAGS += $(SAN_LDFLAGS) 50LDLIBS += $(LIBELF_LIBS) -lz -lrt -lpthread 51 52PCAP_CFLAGS := $(shell $(PKG_CONFIG) --cflags libpcap 2>/dev/null && echo "-DTRAFFIC_MONITOR=1") 53PCAP_LIBS := $(shell $(PKG_CONFIG) --libs libpcap 2>/dev/null) 54LDLIBS += $(PCAP_LIBS) 55CFLAGS += $(PCAP_CFLAGS) 56 57# The following tests perform type punning and they may break strict 58# aliasing rules, which are exploited by both GCC and clang by default 59# while optimizing. This can lead to broken programs. 60progs/bind4_prog.c-CFLAGS := -fno-strict-aliasing 61progs/bind6_prog.c-CFLAGS := -fno-strict-aliasing 62progs/dynptr_fail.c-CFLAGS := -fno-strict-aliasing 63progs/linked_list_fail.c-CFLAGS := -fno-strict-aliasing 64progs/map_kptr_fail.c-CFLAGS := -fno-strict-aliasing 65progs/syscall.c-CFLAGS := -fno-strict-aliasing 66progs/test_pkt_md_access.c-CFLAGS := -fno-strict-aliasing 67progs/test_sk_lookup.c-CFLAGS := -fno-strict-aliasing 68progs/timer_crash.c-CFLAGS := -fno-strict-aliasing 69progs/test_global_func9.c-CFLAGS := -fno-strict-aliasing 70progs/verifier_nocsr.c-CFLAGS := -fno-strict-aliasing 71 72# Some utility functions use LLVM libraries 73jit_disasm_helpers.c-CFLAGS = $(LLVM_CFLAGS) 74 75ifneq ($(LLVM),) 76# Silence some warnings when compiled with clang 77CFLAGS += -Wno-unused-command-line-argument 78endif 79 80# Check whether bpf cpu=v4 is supported or not by clang 81ifneq ($(shell $(CLANG) --target=bpf -mcpu=help 2>&1 | grep 'v4'),) 82CLANG_CPUV4 := 1 83endif 84 85# Order correspond to 'make run_tests' order 86TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \ 87 test_sockmap \ 88 test_tcpnotify_user test_sysctl \ 89 test_progs-no_alu32 90TEST_INST_SUBDIRS := no_alu32 91 92# Also test bpf-gcc, if present 93ifneq ($(BPF_GCC),) 94TEST_GEN_PROGS += test_progs-bpf_gcc 95TEST_INST_SUBDIRS += bpf_gcc 96 97# The following tests contain C code that, although technically legal, 98# triggers GCC warnings that cannot be disabled: declaration of 99# anonymous struct types in function parameter lists. 100progs/btf_dump_test_case_bitfields.c-bpf_gcc-CFLAGS := -Wno-error 101progs/btf_dump_test_case_namespacing.c-bpf_gcc-CFLAGS := -Wno-error 102progs/btf_dump_test_case_packing.c-bpf_gcc-CFLAGS := -Wno-error 103progs/btf_dump_test_case_padding.c-bpf_gcc-CFLAGS := -Wno-error 104progs/btf_dump_test_case_syntax.c-bpf_gcc-CFLAGS := -Wno-error 105 106# The following tests do type-punning, via the __imm_insn macro, from 107# `struct bpf_insn' to long and then uses the value. This triggers an 108# "is used uninitialized" warning in GCC due to strict-aliasing 109# rules. 110progs/verifier_ref_tracking.c-bpf_gcc-CFLAGS := -fno-strict-aliasing 111progs/verifier_unpriv.c-bpf_gcc-CFLAGS := -fno-strict-aliasing 112progs/verifier_cgroup_storage.c-bpf_gcc-CFLAGS := -fno-strict-aliasing 113progs/verifier_ld_ind.c-bpf_gcc-CFLAGS := -fno-strict-aliasing 114progs/verifier_map_ret_val.c-bpf_gcc-CFLAGS := -fno-strict-aliasing 115progs/verifier_spill_fill.c-bpf_gcc-CFLAGS := -fno-strict-aliasing 116progs/verifier_subprog_precision.c-bpf_gcc-CFLAGS := -fno-strict-aliasing 117progs/verifier_uninit.c-bpf_gcc-CFLAGS := -fno-strict-aliasing 118endif 119 120ifneq ($(CLANG_CPUV4),) 121TEST_GEN_PROGS += test_progs-cpuv4 122TEST_INST_SUBDIRS += cpuv4 123endif 124 125TEST_GEN_FILES = test_lwt_ip_encap.bpf.o test_tc_edt.bpf.o 126TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c) 127 128# Order correspond to 'make run_tests' order 129TEST_PROGS := test_kmod.sh \ 130 test_xdp_redirect.sh \ 131 test_xdp_redirect_multi.sh \ 132 test_xdp_meta.sh \ 133 test_tunnel.sh \ 134 test_lwt_seg6local.sh \ 135 test_lirc_mode2.sh \ 136 test_xdp_vlan_mode_generic.sh \ 137 test_xdp_vlan_mode_native.sh \ 138 test_lwt_ip_encap.sh \ 139 test_tc_tunnel.sh \ 140 test_tc_edt.sh \ 141 test_xdping.sh \ 142 test_bpftool_build.sh \ 143 test_bpftool.sh \ 144 test_bpftool_metadata.sh \ 145 test_doc_build.sh \ 146 test_xsk.sh \ 147 test_xdp_features.sh 148 149TEST_PROGS_EXTENDED := with_addr.sh \ 150 with_tunnels.sh ima_setup.sh verify_sig_setup.sh \ 151 test_xdp_vlan.sh test_bpftool.py 152 153# Compile but not part of 'make run_tests' 154TEST_GEN_PROGS_EXTENDED = \ 155 bench \ 156 bpf_testmod.ko \ 157 bpf_test_modorder_x.ko \ 158 bpf_test_modorder_y.ko \ 159 bpf_test_no_cfi.ko \ 160 flow_dissector_load \ 161 runqslower \ 162 test_cpp \ 163 test_lirc_mode2_user \ 164 veristat \ 165 xdp_features \ 166 xdp_hw_metadata \ 167 xdp_redirect_multi \ 168 xdp_synproxy \ 169 xdping \ 170 xskxceiver 171 172TEST_GEN_FILES += liburandom_read.so urandom_read sign-file uprobe_multi 173 174ifneq ($(V),1) 175submake_extras := feature_display=0 176endif 177 178# override lib.mk's default rules 179OVERRIDE_TARGETS := 1 180override define CLEAN 181 $(call msg,CLEAN) 182 $(Q)$(RM) -r $(TEST_GEN_PROGS) 183 $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED) 184 $(Q)$(RM) -r $(TEST_GEN_FILES) 185 $(Q)$(RM) -r $(EXTRA_CLEAN) 186 $(Q)$(MAKE) -C bpf_testmod clean 187 $(Q)$(MAKE) docs-clean 188endef 189 190include ../lib.mk 191 192NON_CHECK_FEAT_TARGETS := clean docs-clean 193CHECK_FEAT := $(filter-out $(NON_CHECK_FEAT_TARGETS),$(or $(MAKECMDGOALS), "none")) 194ifneq ($(CHECK_FEAT),) 195FEATURE_USER := .selftests 196FEATURE_TESTS := llvm 197FEATURE_DISPLAY := $(FEATURE_TESTS) 198 199# Makefile.feature expects OUTPUT to end with a slash 200ifeq ($(shell expr $(MAKE_VERSION) \>= 4.4), 1) 201$(let OUTPUT,$(OUTPUT)/,\ 202 $(eval include ../../../build/Makefile.feature)) 203else 204OUTPUT := $(OUTPUT)/ 205$(eval include ../../../build/Makefile.feature) 206OUTPUT := $(patsubst %/,%,$(OUTPUT)) 207endif 208endif 209 210ifeq ($(feature-llvm),1) 211 LLVM_CFLAGS += -DHAVE_LLVM_SUPPORT 212 LLVM_CONFIG_LIB_COMPONENTS := mcdisassembler all-targets 213 # both llvm-config and lib.mk add -D_GNU_SOURCE, which ends up as conflict 214 LLVM_CFLAGS += $(filter-out -D_GNU_SOURCE,$(shell $(LLVM_CONFIG) --cflags)) 215 LLVM_LDLIBS += $(shell $(LLVM_CONFIG) --link-static --libs $(LLVM_CONFIG_LIB_COMPONENTS)) 216 LLVM_LDLIBS += $(shell $(LLVM_CONFIG) --link-static --system-libs $(LLVM_CONFIG_LIB_COMPONENTS)) 217 LLVM_LDLIBS += -lstdc++ 218 LLVM_LDFLAGS += $(shell $(LLVM_CONFIG) --ldflags) 219endif 220 221SCRATCH_DIR := $(OUTPUT)/tools 222BUILD_DIR := $(SCRATCH_DIR)/build 223INCLUDE_DIR := $(SCRATCH_DIR)/include 224BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a 225ifneq ($(CROSS_COMPILE),) 226HOST_BUILD_DIR := $(BUILD_DIR)/host 227HOST_SCRATCH_DIR := $(OUTPUT)/host-tools 228HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include 229else 230HOST_BUILD_DIR := $(BUILD_DIR) 231HOST_SCRATCH_DIR := $(SCRATCH_DIR) 232HOST_INCLUDE_DIR := $(INCLUDE_DIR) 233endif 234HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a 235RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids 236RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/ 237 238VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \ 239 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \ 240 ../../../../vmlinux \ 241 /sys/kernel/btf/vmlinux \ 242 /boot/vmlinux-$(shell uname -r) 243VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) 244ifeq ($(VMLINUX_BTF),) 245$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)") 246endif 247 248# Define simple and short `make test_progs`, `make test_sysctl`, etc targets 249# to build individual tests. 250# NOTE: Semicolon at the end is critical to override lib.mk's default static 251# rule for binaries. 252$(notdir $(TEST_GEN_PROGS) \ 253 $(TEST_GEN_PROGS_EXTENDED)): %: $(OUTPUT)/% ; 254 255# sort removes libbpf duplicates when not cross-building 256MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \ 257 $(BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/bpftool \ 258 $(HOST_BUILD_DIR)/resolve_btfids \ 259 $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR)) 260$(MAKE_DIRS): 261 $(call msg,MKDIR,,$@) 262 $(Q)mkdir -p $@ 263 264$(OUTPUT)/%.o: %.c 265 $(call msg,CC,,$@) 266 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@ 267 268$(OUTPUT)/%:%.c 269 $(call msg,BINARY,,$@) 270 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@ 271 272# LLVM's ld.lld doesn't support all the architectures, so use it only on x86 273ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 riscv)) 274LLD := lld 275else 276LLD := $(shell command -v $(LD)) 277endif 278 279# Filter out -static for liburandom_read.so and its dependent targets so that static builds 280# do not fail. Static builds leave urandom_read relying on system-wide shared libraries. 281$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c liburandom_read.map 282 $(call msg,LIB,,$@) 283 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \ 284 $(filter-out -static,$(CFLAGS) $(LDFLAGS)) \ 285 $(filter %.c,$^) $(filter-out -static,$(LDLIBS)) \ 286 -Wno-unused-command-line-argument \ 287 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ 288 -Wl,--version-script=liburandom_read.map \ 289 -fPIC -shared -o $@ 290 291$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so 292 $(call msg,BINARY,,$@) 293 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \ 294 $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \ 295 -Wno-unused-command-line-argument \ 296 -lurandom_read $(filter-out -static,$(LDLIBS)) -L$(OUTPUT) \ 297 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ 298 -Wl,-rpath=. -o $@ 299 300$(OUTPUT)/sign-file: ../../../../scripts/sign-file.c 301 $(call msg,SIGN-FILE,,$@) 302 $(Q)$(CC) $(shell $(PKG_CONFIG) --cflags libcrypto 2> /dev/null) \ 303 $< -o $@ \ 304 $(shell $(PKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto) 305 306$(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch]) 307 $(call msg,MOD,,$@) 308 $(Q)$(RM) bpf_testmod/bpf_testmod.ko # force re-compilation 309 $(Q)$(MAKE) $(submake_extras) -C bpf_testmod \ 310 RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) \ 311 EXTRA_CFLAGS='' EXTRA_LDFLAGS='' 312 $(Q)cp bpf_testmod/bpf_testmod.ko $@ 313 314$(OUTPUT)/bpf_test_no_cfi.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_test_no_cfi/Makefile bpf_test_no_cfi/*.[ch]) 315 $(call msg,MOD,,$@) 316 $(Q)$(RM) bpf_test_no_cfi/bpf_test_no_cfi.ko # force re-compilation 317 $(Q)$(MAKE) $(submake_extras) -C bpf_test_no_cfi \ 318 RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) \ 319 EXTRA_CFLAGS='' EXTRA_LDFLAGS='' 320 $(Q)cp bpf_test_no_cfi/bpf_test_no_cfi.ko $@ 321 322$(OUTPUT)/bpf_test_modorder_x.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_test_modorder_x/Makefile bpf_test_modorder_x/*.[ch]) 323 $(call msg,MOD,,$@) 324 $(Q)$(RM) bpf_test_modorder_x/bpf_test_modorder_x.ko # force re-compilation 325 $(Q)$(MAKE) $(submake_extras) -C bpf_test_modorder_x \ 326 RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) \ 327 EXTRA_CFLAGS='' EXTRA_LDFLAGS='' 328 $(Q)cp bpf_test_modorder_x/bpf_test_modorder_x.ko $@ 329 330$(OUTPUT)/bpf_test_modorder_y.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_test_modorder_y/Makefile bpf_test_modorder_y/*.[ch]) 331 $(call msg,MOD,,$@) 332 $(Q)$(RM) bpf_test_modorder_y/bpf_test_modorder_y.ko # force re-compilation 333 $(Q)$(MAKE) $(submake_extras) -C bpf_test_modorder_y \ 334 RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) \ 335 EXTRA_CFLAGS='' EXTRA_LDFLAGS='' 336 $(Q)cp bpf_test_modorder_y/bpf_test_modorder_y.ko $@ 337 338 339DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool 340ifneq ($(CROSS_COMPILE),) 341CROSS_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool 342TRUNNER_BPFTOOL := $(CROSS_BPFTOOL) 343USE_BOOTSTRAP := "" 344else 345TRUNNER_BPFTOOL := $(DEFAULT_BPFTOOL) 346USE_BOOTSTRAP := "bootstrap/" 347endif 348 349$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT) 350 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \ 351 OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF) \ 352 BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 353 BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf/ \ 354 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) \ 355 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)' \ 356 EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)' && \ 357 cp $(RUNQSLOWER_OUTPUT)runqslower $@ 358 359TEST_GEN_PROGS_EXTENDED += $(TRUNNER_BPFTOOL) 360 361$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ) 362 363TESTING_HELPERS := $(OUTPUT)/testing_helpers.o 364CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o 365UNPRIV_HELPERS := $(OUTPUT)/unpriv_helpers.o 366TRACE_HELPERS := $(OUTPUT)/trace_helpers.o 367JSON_WRITER := $(OUTPUT)/json_writer.o 368CAP_HELPERS := $(OUTPUT)/cap_helpers.o 369NETWORK_HELPERS := $(OUTPUT)/network_helpers.o 370 371$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS) 372$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS) 373$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS) 374$(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TESTING_HELPERS) 375$(OUTPUT)/test_tag: $(TESTING_HELPERS) 376$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS) 377$(OUTPUT)/xdping: $(TESTING_HELPERS) 378$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS) 379$(OUTPUT)/test_maps: $(TESTING_HELPERS) 380$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) $(UNPRIV_HELPERS) 381$(OUTPUT)/xsk.o: $(BPFOBJ) 382 383BPFTOOL ?= $(DEFAULT_BPFTOOL) 384$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 385 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool 386 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 387 ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" \ 388 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)' \ 389 EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \ 390 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 391 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 392 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \ 393 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin 394 395ifneq ($(CROSS_COMPILE),) 396$(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 397 $(BPFOBJ) | $(BUILD_DIR)/bpftool 398 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 399 ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) \ 400 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)' \ 401 EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \ 402 OUTPUT=$(BUILD_DIR)/bpftool/ \ 403 LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/ \ 404 LIBBPF_DESTDIR=$(SCRATCH_DIR)/ \ 405 prefix= DESTDIR=$(SCRATCH_DIR)/ install-bin 406endif 407 408all: docs 409 410docs: 411 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \ 412 -f Makefile.docs \ 413 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 414 415docs-clean: 416 $(Q)$(MAKE) $(submake_extras) \ 417 -f Makefile.docs \ 418 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 419 420$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 421 $(APIDIR)/linux/bpf.h \ 422 | $(BUILD_DIR)/libbpf 423 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \ 424 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)' \ 425 EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)' \ 426 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers 427 428ifneq ($(BPFOBJ),$(HOST_BPFOBJ)) 429$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 430 $(APIDIR)/linux/bpf.h \ 431 | $(HOST_BUILD_DIR)/libbpf 432 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \ 433 ARCH= CROSS_COMPILE= \ 434 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)' \ 435 EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \ 436 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 437 CC="$(HOSTCC)" LD="$(HOSTLD)" \ 438 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers 439endif 440 441# vmlinux.h is first dumped to a temprorary file and then compared to 442# the previous version. This helps to avoid unnecessary re-builds of 443# $(TRUNNER_BPF_OBJS) 444$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR) 445ifeq ($(VMLINUX_H),) 446 $(call msg,GEN,,$@) 447 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $(INCLUDE_DIR)/.vmlinux.h.tmp 448 $(Q)cmp -s $(INCLUDE_DIR)/.vmlinux.h.tmp $@ || mv $(INCLUDE_DIR)/.vmlinux.h.tmp $@ 449else 450 $(call msg,CP,,$@) 451 $(Q)cp "$(VMLINUX_H)" $@ 452endif 453 454$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \ 455 $(TOOLSDIR)/bpf/resolve_btfids/main.c \ 456 $(TOOLSDIR)/lib/rbtree.c \ 457 $(TOOLSDIR)/lib/zalloc.c \ 458 $(TOOLSDIR)/lib/string.c \ 459 $(TOOLSDIR)/lib/ctype.c \ 460 $(TOOLSDIR)/lib/str_error_r.c 461 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \ 462 CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \ 463 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \ 464 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ) 465 466# Get Clang's default includes on this system, as opposed to those seen by 467# '--target=bpf'. This fixes "missing" files on some architectures/distros, 468# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 469# 470# Use '-idirafter': Don't interfere with include mechanics except where the 471# build would have failed anyways. 472define get_sys_includes 473$(shell $(1) $(2) -v -E - </dev/null 2>&1 \ 474 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \ 475$(shell $(1) $(2) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') \ 476$(shell $(1) $(2) -dM -E - </dev/null | grep '__loongarch_grlen ' | awk '{printf("-D__BITS_PER_LONG=%d", $$3)}') \ 477$(shell $(1) $(2) -dM -E - </dev/null | grep -E 'MIPS(EL|EB)|_MIPS_SZ(PTR|LONG) |_MIPS_SIM |_ABI(O32|N32|64) ' | awk '{printf("-D%s=%s ", $$2, $$3)}') 478endef 479 480# Determine target endianness. 481IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \ 482 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__') 483MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian) 484BPF_TARGET_ENDIAN=$(if $(IS_LITTLE_ENDIAN),--target=bpfel,--target=bpfeb) 485 486ifneq ($(CROSS_COMPILE),) 487CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_COMPILE:%-=%)) 488endif 489 490CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARCH)) 491BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ 492 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \ 493 -I$(abspath $(OUTPUT)/../usr/include) \ 494 -Wno-compare-distinct-pointer-types 495# TODO: enable me -Wsign-compare 496 497CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) 498 499$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline 500$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline 501 502$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h 503$(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h 504 505# Build BPF object using Clang 506# $1 - input .c file 507# $2 - output .o file 508# $3 - CFLAGS 509# $4 - binary name 510define CLANG_BPF_BUILD_RULE 511 $(call msg,CLNG-BPF,$4,$2) 512 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v3 -o $2 513endef 514# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32 515define CLANG_NOALU32_BPF_BUILD_RULE 516 $(call msg,CLNG-BPF,$4,$2) 517 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v2 -o $2 518endef 519# Similar to CLANG_BPF_BUILD_RULE, but with cpu-v4 520define CLANG_CPUV4_BPF_BUILD_RULE 521 $(call msg,CLNG-BPF,$4,$2) 522 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v4 -o $2 523endef 524# Build BPF object using GCC 525define GCC_BPF_BUILD_RULE 526 $(call msg,GCC-BPF,$4,$2) 527 $(Q)$(BPF_GCC) $3 -DBPF_NO_PRESERVE_ACCESS_INDEX -Wno-attributes -O2 -c $1 -o $2 528endef 529 530SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c 531 532LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \ 533 linked_vars.skel.h linked_maps.skel.h \ 534 test_subskeleton.skel.h test_subskeleton_lib.skel.h \ 535 test_usdt.skel.h 536 537LSKELS := fentry_test.c fexit_test.c fexit_sleep.c atomics.c \ 538 trace_printk.c trace_vprintk.c map_ptr_kern.c \ 539 core_kern.c core_kern_overflow.c test_ringbuf.c \ 540 test_ringbuf_n.c test_ringbuf_map_key.c test_ringbuf_write.c 541 542# Generate both light skeleton and libbpf skeleton for these 543LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test.c \ 544 kfunc_call_test_subprog.c 545SKEL_BLACKLIST += $$(LSKELS) 546 547test_static_linked.skel.h-deps := test_static_linked1.bpf.o test_static_linked2.bpf.o 548linked_funcs.skel.h-deps := linked_funcs1.bpf.o linked_funcs2.bpf.o 549linked_vars.skel.h-deps := linked_vars1.bpf.o linked_vars2.bpf.o 550linked_maps.skel.h-deps := linked_maps1.bpf.o linked_maps2.bpf.o 551# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file 552# but that's created as a side-effect of the skel.h generation. 553test_subskeleton.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o test_subskeleton.bpf.o 554test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o 555test_usdt.skel.h-deps := test_usdt.bpf.o test_usdt_multispec.bpf.o 556xsk_xdp_progs.skel.h-deps := xsk_xdp_progs.bpf.o 557xdp_hw_metadata.skel.h-deps := xdp_hw_metadata.bpf.o 558xdp_features.skel.h-deps := xdp_features.bpf.o 559 560LINKED_BPF_OBJS := $(foreach skel,$(LINKED_SKELS),$($(skel)-deps)) 561LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(LINKED_BPF_OBJS)) 562 563HEADERS_FOR_BPF_OBJS := $(wildcard $(BPFDIR)/*.bpf.h) \ 564 $(addprefix $(BPFDIR)/, bpf_core_read.h \ 565 bpf_endian.h \ 566 bpf_helpers.h \ 567 bpf_tracing.h) 568 569# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on 570# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES. 571# Parameters: 572# $1 - test runner base binary name (e.g., test_progs) 573# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, bpf_gcc, etc) 574define DEFINE_TEST_RUNNER 575 576TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2 577TRUNNER_BINARY := $1$(if $2,-)$2 578TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \ 579 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c))) 580TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \ 581 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES))) 582TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES)) 583TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h 584TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c)) 585TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.bpf.o, $$(TRUNNER_BPF_SRCS)) 586TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \ 587 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\ 588 $$(TRUNNER_BPF_SRCS))) 589TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA)) 590TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS)) 591TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS) 592 593# Evaluate rules now with extra TRUNNER_XXX variables above already defined 594$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2)) 595 596endef 597 598# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and 599# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with: 600# $1 - test runner base binary name (e.g., test_progs) 601# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, bpf_gcc, etc) 602define DEFINE_TEST_RUNNER_RULES 603 604ifeq ($($(TRUNNER_OUTPUT)-dir),) 605$(TRUNNER_OUTPUT)-dir := y 606$(TRUNNER_OUTPUT): 607 $$(call msg,MKDIR,,$$@) 608 $(Q)mkdir -p $$@ 609endif 610 611# ensure we set up BPF objects generation rule just once for a given 612# input/output directory combination 613ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),) 614$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y 615$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o: \ 616 $(TRUNNER_BPF_PROGS_DIR)/%.c \ 617 $(TRUNNER_BPF_PROGS_DIR)/*.h \ 618 $$(INCLUDE_DIR)/vmlinux.h \ 619 $(HEADERS_FOR_BPF_OBJS) \ 620 | $(TRUNNER_OUTPUT) $$(BPFOBJ) 621 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \ 622 $(TRUNNER_BPF_CFLAGS) \ 623 $$($$<-CFLAGS) \ 624 $$($$<-$2-CFLAGS),$(TRUNNER_BINARY)) 625 626$(TRUNNER_BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 627 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 628 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$< 629 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o) 630 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o) 631 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o) 632 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$@ 633 $(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$(@:.skel.h=.subskel.h) 634 $(Q)rm -f $$(<:.o=.linked1.o) $$(<:.o=.linked2.o) $$(<:.o=.linked3.o) 635 636$(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 637 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 638 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$< 639 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o) 640 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o) 641 $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o) 642 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@ 643 $(Q)rm -f $$(<:.o=.llinked1.o) $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o) 644 645$(LINKED_BPF_OBJS): %: $(TRUNNER_OUTPUT)/% 646 647# .SECONDEXPANSION here allows to correctly expand %-deps variables as prerequisites 648.SECONDEXPANSION: 649$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_OUTPUT)/%: $$$$(%-deps) $(BPFTOOL) | $(TRUNNER_OUTPUT) 650 $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.bpf.o)) 651 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps)) 652 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o) 653 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o) 654 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o) 655 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 656 $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@ 657 $(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h) 658 $(Q)rm -f $$(@:.skel.h=.linked1.o) $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o) 659 660# When the compiler generates a %.d file, only skel basenames (not 661# full paths) are specified as prerequisites for corresponding %.o 662# file. vpath directives below instruct make to search for skel files 663# in TRUNNER_OUTPUT, if they are not present in the working directory. 664vpath %.skel.h $(TRUNNER_OUTPUT) 665vpath %.lskel.h $(TRUNNER_OUTPUT) 666vpath %.subskel.h $(TRUNNER_OUTPUT) 667 668endif 669 670# ensure we set up tests.h header generation rule just once 671ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),) 672$(TRUNNER_TESTS_DIR)-tests-hdr := y 673$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c 674 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@) 675 $$(shell (echo '/* Generated header, do not edit */'; \ 676 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \ 677 $(TRUNNER_TESTS_DIR)/*.c | sort ; \ 678 ) > $$@) 679endif 680 681# compile individual test files 682# Note: we cd into output directory to ensure embedded BPF object is found 683$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \ 684 $(TRUNNER_TESTS_DIR)/%.c \ 685 | $(TRUNNER_OUTPUT)/%.test.d 686 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@) 687 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -MMD -MT $$@ -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F) 688 689$(TRUNNER_TEST_OBJS:.o=.d): $(TRUNNER_OUTPUT)/%.test.d: \ 690 $(TRUNNER_TESTS_DIR)/%.c \ 691 $(TRUNNER_EXTRA_HDRS) \ 692 $(TRUNNER_BPF_SKELS) \ 693 $(TRUNNER_BPF_LSKELS) \ 694 $(TRUNNER_BPF_SKELS_LINKED) \ 695 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 696 697ifeq ($(filter clean docs-clean,$(MAKECMDGOALS)),) 698include $(wildcard $(TRUNNER_TEST_OBJS:.o=.d)) 699endif 700 701# add per extra obj CFGLAGS definitions 702$(foreach N,$(patsubst $(TRUNNER_OUTPUT)/%.o,%,$(TRUNNER_EXTRA_OBJS)), \ 703 $(eval $(TRUNNER_OUTPUT)/$(N).o: CFLAGS += $($(N).c-CFLAGS))) 704 705$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \ 706 %.c \ 707 $(TRUNNER_EXTRA_HDRS) \ 708 $(TRUNNER_TESTS_HDR) \ 709 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 710 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@) 711 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@ 712 713# non-flavored in-srctree builds receive special treatment, in particular, we 714# do not need to copy extra resources (see e.g. test_btf_dump_case()) 715$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT) 716ifneq ($2:$(OUTPUT),:$(shell pwd)) 717 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES)) 718 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/ 719endif 720 721$(OUTPUT)/$(TRUNNER_BINARY): LDLIBS += $$(LLVM_LDLIBS) 722$(OUTPUT)/$(TRUNNER_BINARY): LDFLAGS += $$(LLVM_LDFLAGS) 723 724# some X.test.o files have runtime dependencies on Y.bpf.o files 725$(OUTPUT)/$(TRUNNER_BINARY): | $(TRUNNER_BPF_OBJS) 726 727$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \ 728 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \ 729 $(RESOLVE_BTFIDS) \ 730 $(TRUNNER_BPFTOOL) \ 731 | $(TRUNNER_BINARY)-extras 732 $$(call msg,BINARY,,$$@) 733 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) $$(LDFLAGS) -o $$@ 734 $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.bpf.o $$@ 735 $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/$(USE_BOOTSTRAP)bpftool \ 736 $(OUTPUT)/$(if $2,$2/)bpftool 737 738endef 739 740# Define test_progs test runner. 741TRUNNER_TESTS_DIR := prog_tests 742TRUNNER_BPF_PROGS_DIR := progs 743TRUNNER_EXTRA_SOURCES := test_progs.c \ 744 cgroup_helpers.c \ 745 trace_helpers.c \ 746 network_helpers.c \ 747 testing_helpers.c \ 748 btf_helpers.c \ 749 cap_helpers.c \ 750 unpriv_helpers.c \ 751 netlink_helpers.c \ 752 jit_disasm_helpers.c \ 753 io_helpers.c \ 754 test_loader.c \ 755 xsk.c \ 756 disasm.c \ 757 disasm_helpers.c \ 758 json_writer.c \ 759 flow_dissector_load.h \ 760 ip_check_defrag_frags.h 761TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \ 762 $(OUTPUT)/bpf_test_no_cfi.ko \ 763 $(OUTPUT)/bpf_test_modorder_x.ko \ 764 $(OUTPUT)/bpf_test_modorder_y.ko \ 765 $(OUTPUT)/liburandom_read.so \ 766 $(OUTPUT)/xdp_synproxy \ 767 $(OUTPUT)/sign-file \ 768 $(OUTPUT)/uprobe_multi \ 769 ima_setup.sh \ 770 verify_sig_setup.sh \ 771 $(wildcard progs/btf_dump_test_case_*.c) \ 772 $(wildcard progs/*.bpf.o) 773TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE 774TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS 775$(eval $(call DEFINE_TEST_RUNNER,test_progs)) 776 777# Define test_progs-no_alu32 test runner. 778TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE 779TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) 780$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32)) 781 782# Define test_progs-cpuv4 test runner. 783ifneq ($(CLANG_CPUV4),) 784TRUNNER_BPF_BUILD_RULE := CLANG_CPUV4_BPF_BUILD_RULE 785TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS 786$(eval $(call DEFINE_TEST_RUNNER,test_progs,cpuv4)) 787endif 788 789# Define test_progs BPF-GCC-flavored test runner. 790ifneq ($(BPF_GCC),) 791TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE 792TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc,) 793$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc)) 794endif 795 796# Define test_maps test runner. 797TRUNNER_TESTS_DIR := map_tests 798TRUNNER_BPF_PROGS_DIR := progs 799TRUNNER_EXTRA_SOURCES := test_maps.c 800TRUNNER_EXTRA_FILES := 801TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built) 802TRUNNER_BPF_CFLAGS := 803$(eval $(call DEFINE_TEST_RUNNER,test_maps)) 804 805# Define test_verifier test runner. 806# It is much simpler than test_maps/test_progs and sufficiently different from 807# them (e.g., test.h is using completely pattern), that it's worth just 808# explicitly defining all the rules explicitly. 809verifier/tests.h: verifier/*.c 810 $(shell ( cd verifier/; \ 811 echo '/* Generated header, do not edit */'; \ 812 echo '#ifdef FILL_ARRAY'; \ 813 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \ 814 echo '#endif' \ 815 ) > verifier/tests.h) 816$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT) 817 $(call msg,BINARY,,$@) 818 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 819 820# Include find_bit.c to compile xskxceiver. 821EXTRA_SRC := $(TOOLSDIR)/lib/find_bit.c 822$(OUTPUT)/xskxceiver: $(EXTRA_SRC) xskxceiver.c xskxceiver.h $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xsk_xdp_progs.skel.h $(BPFOBJ) | $(OUTPUT) 823 $(call msg,BINARY,,$@) 824 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 825 826$(OUTPUT)/xdp_hw_metadata: xdp_hw_metadata.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xdp_hw_metadata.skel.h | $(OUTPUT) 827 $(call msg,BINARY,,$@) 828 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 829 830$(OUTPUT)/xdp_features: xdp_features.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xdp_features.skel.h | $(OUTPUT) 831 $(call msg,BINARY,,$@) 832 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 833 834# Make sure we are able to include and link libbpf against c++. 835$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ) 836 $(call msg,CXX,,$@) 837 $(Q)$(CXX) $(subst -D_GNU_SOURCE=,,$(CFLAGS)) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@ 838 839# Benchmark runner 840$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ) 841 $(call msg,CC,,$@) 842 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@ 843$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h 844$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h 845$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \ 846 $(OUTPUT)/perfbuf_bench.skel.h 847$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h 848$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h 849$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h 850$(OUTPUT)/bench_bpf_hashmap_full_update.o: $(OUTPUT)/bpf_hashmap_full_update_bench.skel.h 851$(OUTPUT)/bench_local_storage.o: $(OUTPUT)/local_storage_bench.skel.h 852$(OUTPUT)/bench_local_storage_rcu_tasks_trace.o: $(OUTPUT)/local_storage_rcu_tasks_trace_bench.skel.h 853$(OUTPUT)/bench_local_storage_create.o: $(OUTPUT)/bench_local_storage_create.skel.h 854$(OUTPUT)/bench_bpf_hashmap_lookup.o: $(OUTPUT)/bpf_hashmap_lookup.skel.h 855$(OUTPUT)/bench_htab_mem.o: $(OUTPUT)/htab_mem_bench.skel.h 856$(OUTPUT)/bench_bpf_crypto.o: $(OUTPUT)/crypto_bench.skel.h 857$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ) 858$(OUTPUT)/bench: LDLIBS += -lm 859$(OUTPUT)/bench: $(OUTPUT)/bench.o \ 860 $(TESTING_HELPERS) \ 861 $(TRACE_HELPERS) \ 862 $(CGROUP_HELPERS) \ 863 $(OUTPUT)/bench_count.o \ 864 $(OUTPUT)/bench_rename.o \ 865 $(OUTPUT)/bench_trigger.o \ 866 $(OUTPUT)/bench_ringbufs.o \ 867 $(OUTPUT)/bench_bloom_filter_map.o \ 868 $(OUTPUT)/bench_bpf_loop.o \ 869 $(OUTPUT)/bench_strncmp.o \ 870 $(OUTPUT)/bench_bpf_hashmap_full_update.o \ 871 $(OUTPUT)/bench_local_storage.o \ 872 $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o \ 873 $(OUTPUT)/bench_bpf_hashmap_lookup.o \ 874 $(OUTPUT)/bench_local_storage_create.o \ 875 $(OUTPUT)/bench_htab_mem.o \ 876 $(OUTPUT)/bench_bpf_crypto.o \ 877 # 878 $(call msg,BINARY,,$@) 879 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ 880 881$(OUTPUT)/veristat.o: $(BPFOBJ) 882$(OUTPUT)/veristat: $(OUTPUT)/veristat.o 883 $(call msg,BINARY,,$@) 884 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ 885 886# Linking uprobe_multi can fail due to relocation overflows on mips. 887$(OUTPUT)/uprobe_multi: CFLAGS += $(if $(filter mips, $(ARCH)),-mxgot) 888$(OUTPUT)/uprobe_multi: uprobe_multi.c uprobe_multi.ld 889 $(call msg,BINARY,,$@) 890 $(Q)$(CC) $(CFLAGS) -Wl,-T,uprobe_multi.ld -O0 $(LDFLAGS) \ 891 $(filter-out %.ld,$^) $(LDLIBS) -o $@ 892 893EXTRA_CLEAN := $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \ 894 prog_tests/tests.h map_tests/tests.h verifier/tests.h \ 895 feature bpftool \ 896 $(addprefix $(OUTPUT)/,*.o *.d *.skel.h *.lskel.h *.subskel.h \ 897 no_alu32 cpuv4 bpf_gcc bpf_testmod.ko \ 898 bpf_test_no_cfi.ko \ 899 bpf_test_modorder_x.ko \ 900 bpf_test_modorder_y.ko \ 901 liburandom_read.so) \ 902 $(OUTPUT)/FEATURE-DUMP.selftests 903 904.PHONY: docs docs-clean 905 906# Delete partially updated (corrupted) files on error 907.DELETE_ON_ERROR: 908 909DEFAULT_INSTALL_RULE := $(INSTALL_RULE) 910override define INSTALL_RULE 911 $(DEFAULT_INSTALL_RULE) 912 @for DIR in $(TEST_INST_SUBDIRS); do \ 913 mkdir -p $(INSTALL_PATH)/$$DIR; \ 914 rsync -a $(OUTPUT)/$$DIR/*.bpf.o $(INSTALL_PATH)/$$DIR;\ 915 done 916endef 917