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 $(CLANG) --target=bpf -mcpu=help 2>&1 | grep 'v4'),) 82CLANG_CPUV4 := 1 83endif 84 85# Order correspond to 'make run_tests' order 86TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_progs \ 87 test_sockmap \ 88 test_tcpnotify_user test_sysctl \ 89 test_progs-no_alu32 90TEST_INST_SUBDIRS := no_alu32 91 92# Also test bpf-gcc, if present 93ifneq ($(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 $(wildcard progs/btf_dump_test_case_*.c) 127 128# Order correspond to 'make run_tests' order 129TEST_PROGS := test_kmod.sh \ 130 test_xdp_redirect.sh \ 131 test_xdp_redirect_multi.sh \ 132 test_tunnel.sh \ 133 test_lwt_seg6local.sh \ 134 test_lirc_mode2.sh \ 135 test_flow_dissector.sh \ 136 test_xdp_vlan_mode_generic.sh \ 137 test_xdp_vlan_mode_native.sh \ 138 test_lwt_ip_encap.sh \ 139 test_tc_tunnel.sh \ 140 test_tc_edt.sh \ 141 test_xdping.sh \ 142 test_bpftool_build.sh \ 143 test_bpftool.sh \ 144 test_bpftool_metadata.sh \ 145 test_doc_build.sh \ 146 test_xsk.sh \ 147 test_xdp_features.sh 148 149TEST_PROGS_EXTENDED := with_addr.sh \ 150 with_tunnels.sh ima_setup.sh verify_sig_setup.sh \ 151 test_xdp_vlan.sh test_bpftool.py 152 153# Compile but not part of 'make run_tests' 154TEST_GEN_PROGS_EXTENDED = \ 155 bench \ 156 bpf_testmod.ko \ 157 bpf_test_modorder_x.ko \ 158 bpf_test_modorder_y.ko \ 159 bpf_test_no_cfi.ko \ 160 flow_dissector_load \ 161 runqslower \ 162 test_cpp \ 163 test_flow_dissector \ 164 test_lirc_mode2_user \ 165 veristat \ 166 xdp_features \ 167 xdp_hw_metadata \ 168 xdp_redirect_multi \ 169 xdp_synproxy \ 170 xdping \ 171 xskxceiver 172 173TEST_GEN_FILES += liburandom_read.so urandom_read sign-file uprobe_multi 174 175ifneq ($(V),1) 176submake_extras := feature_display=0 177endif 178 179# override lib.mk's default rules 180OVERRIDE_TARGETS := 1 181override define CLEAN 182 $(call msg,CLEAN) 183 $(Q)$(RM) -r $(TEST_GEN_PROGS) 184 $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED) 185 $(Q)$(RM) -r $(TEST_GEN_FILES) 186 $(Q)$(RM) -r $(EXTRA_CLEAN) 187 $(Q)$(MAKE) -C bpf_testmod clean 188 $(Q)$(MAKE) docs-clean 189endef 190 191include ../lib.mk 192 193NON_CHECK_FEAT_TARGETS := clean docs-clean 194CHECK_FEAT := $(filter-out $(NON_CHECK_FEAT_TARGETS),$(or $(MAKECMDGOALS), "none")) 195ifneq ($(CHECK_FEAT),) 196FEATURE_USER := .selftests 197FEATURE_TESTS := llvm 198FEATURE_DISPLAY := $(FEATURE_TESTS) 199 200# Makefile.feature expects OUTPUT to end with a slash 201ifeq ($(shell expr $(MAKE_VERSION) \>= 4.4), 1) 202$(let OUTPUT,$(OUTPUT)/,\ 203 $(eval include ../../../build/Makefile.feature)) 204else 205OUTPUT := $(OUTPUT)/ 206$(eval include ../../../build/Makefile.feature) 207OUTPUT := $(patsubst %/,%,$(OUTPUT)) 208endif 209endif 210 211ifeq ($(feature-llvm),1) 212 LLVM_CFLAGS += -DHAVE_LLVM_SUPPORT 213 LLVM_CONFIG_LIB_COMPONENTS := mcdisassembler all-targets 214 # both llvm-config and lib.mk add -D_GNU_SOURCE, which ends up as conflict 215 LLVM_CFLAGS += $(filter-out -D_GNU_SOURCE,$(shell $(LLVM_CONFIG) --cflags)) 216 LLVM_LDLIBS += $(shell $(LLVM_CONFIG) --link-static --libs $(LLVM_CONFIG_LIB_COMPONENTS)) 217 LLVM_LDLIBS += $(shell $(LLVM_CONFIG) --link-static --system-libs $(LLVM_CONFIG_LIB_COMPONENTS)) 218 LLVM_LDLIBS += -lstdc++ 219 LLVM_LDFLAGS += $(shell $(LLVM_CONFIG) --ldflags) 220endif 221 222SCRATCH_DIR := $(OUTPUT)/tools 223BUILD_DIR := $(SCRATCH_DIR)/build 224INCLUDE_DIR := $(SCRATCH_DIR)/include 225BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a 226ifneq ($(CROSS_COMPILE),) 227HOST_BUILD_DIR := $(BUILD_DIR)/host 228HOST_SCRATCH_DIR := $(OUTPUT)/host-tools 229HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include 230else 231HOST_BUILD_DIR := $(BUILD_DIR) 232HOST_SCRATCH_DIR := $(SCRATCH_DIR) 233HOST_INCLUDE_DIR := $(INCLUDE_DIR) 234endif 235HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a 236RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids 237RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/ 238 239VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \ 240 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \ 241 ../../../../vmlinux \ 242 /sys/kernel/btf/vmlinux \ 243 /boot/vmlinux-$(shell uname -r) 244VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) 245ifeq ($(VMLINUX_BTF),) 246$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)") 247endif 248 249# Define simple and short `make test_progs`, `make test_sysctl`, etc targets 250# to build individual tests. 251# NOTE: Semicolon at the end is critical to override lib.mk's default static 252# rule for binaries. 253$(notdir $(TEST_GEN_PROGS) \ 254 $(TEST_GEN_PROGS_EXTENDED)): %: $(OUTPUT)/% ; 255 256# sort removes libbpf duplicates when not cross-building 257MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \ 258 $(BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/bpftool \ 259 $(HOST_BUILD_DIR)/resolve_btfids \ 260 $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR)) 261$(MAKE_DIRS): 262 $(call msg,MKDIR,,$@) 263 $(Q)mkdir -p $@ 264 265$(OUTPUT)/%.o: %.c 266 $(call msg,CC,,$@) 267 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@ 268 269$(OUTPUT)/%:%.c 270 $(call msg,BINARY,,$@) 271 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@ 272 273# LLVM's ld.lld doesn't support all the architectures, so use it only on x86 274ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 riscv)) 275LLD := lld 276else 277LLD := $(shell command -v $(LD)) 278endif 279 280# Filter out -static for liburandom_read.so and its dependent targets so that static builds 281# do not fail. Static builds leave urandom_read relying on system-wide shared libraries. 282$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c liburandom_read.map 283 $(call msg,LIB,,$@) 284 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \ 285 $(filter-out -static,$(CFLAGS) $(LDFLAGS)) \ 286 $(filter %.c,$^) $(filter-out -static,$(LDLIBS)) \ 287 -Wno-unused-command-line-argument \ 288 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ 289 -Wl,--version-script=liburandom_read.map \ 290 -fPIC -shared -o $@ 291 292$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so 293 $(call msg,BINARY,,$@) 294 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \ 295 $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \ 296 -Wno-unused-command-line-argument \ 297 -lurandom_read $(filter-out -static,$(LDLIBS)) -L$(OUTPUT) \ 298 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ 299 -Wl,-rpath=. -o $@ 300 301$(OUTPUT)/sign-file: ../../../../scripts/sign-file.c 302 $(call msg,SIGN-FILE,,$@) 303 $(Q)$(CC) $(shell $(PKG_CONFIG) --cflags libcrypto 2> /dev/null) \ 304 $< -o $@ \ 305 $(shell $(PKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto) 306 307$(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch]) 308 $(call msg,MOD,,$@) 309 $(Q)$(RM) bpf_testmod/bpf_testmod.ko # force re-compilation 310 $(Q)$(MAKE) $(submake_extras) -C bpf_testmod \ 311 RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) \ 312 EXTRA_CFLAGS='' EXTRA_LDFLAGS='' 313 $(Q)cp bpf_testmod/bpf_testmod.ko $@ 314 315$(OUTPUT)/bpf_test_no_cfi.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_test_no_cfi/Makefile bpf_test_no_cfi/*.[ch]) 316 $(call msg,MOD,,$@) 317 $(Q)$(RM) bpf_test_no_cfi/bpf_test_no_cfi.ko # force re-compilation 318 $(Q)$(MAKE) $(submake_extras) -C bpf_test_no_cfi \ 319 RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) \ 320 EXTRA_CFLAGS='' EXTRA_LDFLAGS='' 321 $(Q)cp bpf_test_no_cfi/bpf_test_no_cfi.ko $@ 322 323$(OUTPUT)/bpf_test_modorder_x.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_test_modorder_x/Makefile bpf_test_modorder_x/*.[ch]) 324 $(call msg,MOD,,$@) 325 $(Q)$(RM) bpf_test_modorder_x/bpf_test_modorder_x.ko # force re-compilation 326 $(Q)$(MAKE) $(submake_extras) -C bpf_test_modorder_x \ 327 RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) \ 328 EXTRA_CFLAGS='' EXTRA_LDFLAGS='' 329 $(Q)cp bpf_test_modorder_x/bpf_test_modorder_x.ko $@ 330 331$(OUTPUT)/bpf_test_modorder_y.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_test_modorder_y/Makefile bpf_test_modorder_y/*.[ch]) 332 $(call msg,MOD,,$@) 333 $(Q)$(RM) bpf_test_modorder_y/bpf_test_modorder_y.ko # force re-compilation 334 $(Q)$(MAKE) $(submake_extras) -C bpf_test_modorder_y \ 335 RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) \ 336 EXTRA_CFLAGS='' EXTRA_LDFLAGS='' 337 $(Q)cp bpf_test_modorder_y/bpf_test_modorder_y.ko $@ 338 339 340DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool 341ifneq ($(CROSS_COMPILE),) 342CROSS_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool 343TRUNNER_BPFTOOL := $(CROSS_BPFTOOL) 344USE_BOOTSTRAP := "" 345else 346TRUNNER_BPFTOOL := $(DEFAULT_BPFTOOL) 347USE_BOOTSTRAP := "bootstrap/" 348endif 349 350$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT) 351 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \ 352 OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF) \ 353 BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 354 BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf/ \ 355 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) \ 356 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)' \ 357 EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)' && \ 358 cp $(RUNQSLOWER_OUTPUT)runqslower $@ 359 360TEST_GEN_PROGS_EXTENDED += $(TRUNNER_BPFTOOL) 361 362$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ) 363 364TESTING_HELPERS := $(OUTPUT)/testing_helpers.o 365CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o 366UNPRIV_HELPERS := $(OUTPUT)/unpriv_helpers.o 367TRACE_HELPERS := $(OUTPUT)/trace_helpers.o 368JSON_WRITER := $(OUTPUT)/json_writer.o 369CAP_HELPERS := $(OUTPUT)/cap_helpers.o 370NETWORK_HELPERS := $(OUTPUT)/network_helpers.o 371 372$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS) 373$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS) 374$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS) 375$(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TESTING_HELPERS) 376$(OUTPUT)/test_tag: $(TESTING_HELPERS) 377$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS) 378$(OUTPUT)/xdping: $(TESTING_HELPERS) 379$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS) 380$(OUTPUT)/test_maps: $(TESTING_HELPERS) 381$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) $(UNPRIV_HELPERS) 382$(OUTPUT)/xsk.o: $(BPFOBJ) 383 384BPFTOOL ?= $(DEFAULT_BPFTOOL) 385$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 386 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool 387 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 388 ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" \ 389 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)' \ 390 EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \ 391 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 392 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 393 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \ 394 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin 395 396ifneq ($(CROSS_COMPILE),) 397$(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 398 $(BPFOBJ) | $(BUILD_DIR)/bpftool 399 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 400 ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) \ 401 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)' \ 402 EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \ 403 OUTPUT=$(BUILD_DIR)/bpftool/ \ 404 LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/ \ 405 LIBBPF_DESTDIR=$(SCRATCH_DIR)/ \ 406 prefix= DESTDIR=$(SCRATCH_DIR)/ install-bin 407endif 408 409all: docs 410 411docs: 412 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \ 413 -f Makefile.docs \ 414 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 415 416docs-clean: 417 $(Q)$(MAKE) $(submake_extras) \ 418 -f Makefile.docs \ 419 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 420 421$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 422 $(APIDIR)/linux/bpf.h \ 423 | $(BUILD_DIR)/libbpf 424 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \ 425 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)' \ 426 EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)' \ 427 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers 428 429ifneq ($(BPFOBJ),$(HOST_BPFOBJ)) 430$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 431 $(APIDIR)/linux/bpf.h \ 432 | $(HOST_BUILD_DIR)/libbpf 433 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \ 434 ARCH= CROSS_COMPILE= \ 435 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)' \ 436 EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \ 437 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 438 CC="$(HOSTCC)" LD="$(HOSTLD)" \ 439 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers 440endif 441 442# vmlinux.h is first dumped to a temprorary file and then compared to 443# the previous version. This helps to avoid unnecessary re-builds of 444# $(TRUNNER_BPF_OBJS) 445$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR) 446ifeq ($(VMLINUX_H),) 447 $(call msg,GEN,,$@) 448 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $(INCLUDE_DIR)/.vmlinux.h.tmp 449 $(Q)cmp -s $(INCLUDE_DIR)/.vmlinux.h.tmp $@ || mv $(INCLUDE_DIR)/.vmlinux.h.tmp $@ 450else 451 $(call msg,CP,,$@) 452 $(Q)cp "$(VMLINUX_H)" $@ 453endif 454 455$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \ 456 $(TOOLSDIR)/bpf/resolve_btfids/main.c \ 457 $(TOOLSDIR)/lib/rbtree.c \ 458 $(TOOLSDIR)/lib/zalloc.c \ 459 $(TOOLSDIR)/lib/string.c \ 460 $(TOOLSDIR)/lib/ctype.c \ 461 $(TOOLSDIR)/lib/str_error_r.c 462 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \ 463 CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \ 464 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \ 465 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ) 466 467# Get Clang's default includes on this system, as opposed to those seen by 468# '--target=bpf'. This fixes "missing" files on some architectures/distros, 469# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 470# 471# Use '-idirafter': Don't interfere with include mechanics except where the 472# build would have failed anyways. 473define get_sys_includes 474$(shell $(1) $(2) -v -E - </dev/null 2>&1 \ 475 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \ 476$(shell $(1) $(2) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') \ 477$(shell $(1) $(2) -dM -E - </dev/null | grep '__loongarch_grlen ' | awk '{printf("-D__BITS_PER_LONG=%d", $$3)}') \ 478$(shell $(1) $(2) -dM -E - </dev/null | grep -E 'MIPS(EL|EB)|_MIPS_SZ(PTR|LONG) |_MIPS_SIM |_ABI(O32|N32|64) ' | awk '{printf("-D%s=%s ", $$2, $$3)}') 479endef 480 481# Determine target endianness. 482IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \ 483 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__') 484MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian) 485BPF_TARGET_ENDIAN=$(if $(IS_LITTLE_ENDIAN),--target=bpfel,--target=bpfeb) 486 487ifneq ($(CROSS_COMPILE),) 488CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_COMPILE:%-=%)) 489endif 490 491CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARCH)) 492BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ 493 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \ 494 -I$(abspath $(OUTPUT)/../usr/include) \ 495 -Wno-compare-distinct-pointer-types 496# TODO: enable me -Wsign-compare 497 498CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) 499 500$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline 501$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline 502 503$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h 504$(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h 505 506# Build BPF object using Clang 507# $1 - input .c file 508# $2 - output .o file 509# $3 - CFLAGS 510# $4 - binary name 511define CLANG_BPF_BUILD_RULE 512 $(call msg,CLNG-BPF,$4,$2) 513 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v3 -o $2 514endef 515# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32 516define CLANG_NOALU32_BPF_BUILD_RULE 517 $(call msg,CLNG-BPF,$4,$2) 518 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v2 -o $2 519endef 520# Similar to CLANG_BPF_BUILD_RULE, but with cpu-v4 521define CLANG_CPUV4_BPF_BUILD_RULE 522 $(call msg,CLNG-BPF,$4,$2) 523 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v4 -o $2 524endef 525# Build BPF object using GCC 526define GCC_BPF_BUILD_RULE 527 $(call msg,GCC-BPF,$4,$2) 528 $(Q)$(BPF_GCC) $3 -DBPF_NO_PRESERVE_ACCESS_INDEX -Wno-attributes -O2 -c $1 -o $2 529endef 530 531SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c 532 533LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \ 534 linked_vars.skel.h linked_maps.skel.h \ 535 test_subskeleton.skel.h test_subskeleton_lib.skel.h \ 536 test_usdt.skel.h 537 538LSKELS := fentry_test.c fexit_test.c fexit_sleep.c atomics.c \ 539 trace_printk.c trace_vprintk.c map_ptr_kern.c \ 540 core_kern.c core_kern_overflow.c test_ringbuf.c \ 541 test_ringbuf_n.c test_ringbuf_map_key.c test_ringbuf_write.c 542 543# Generate both light skeleton and libbpf skeleton for these 544LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test.c \ 545 kfunc_call_test_subprog.c 546SKEL_BLACKLIST += $$(LSKELS) 547 548test_static_linked.skel.h-deps := test_static_linked1.bpf.o test_static_linked2.bpf.o 549linked_funcs.skel.h-deps := linked_funcs1.bpf.o linked_funcs2.bpf.o 550linked_vars.skel.h-deps := linked_vars1.bpf.o linked_vars2.bpf.o 551linked_maps.skel.h-deps := linked_maps1.bpf.o linked_maps2.bpf.o 552# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file 553# but that's created as a side-effect of the skel.h generation. 554test_subskeleton.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o test_subskeleton.bpf.o 555test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o 556test_usdt.skel.h-deps := test_usdt.bpf.o test_usdt_multispec.bpf.o 557xsk_xdp_progs.skel.h-deps := xsk_xdp_progs.bpf.o 558xdp_hw_metadata.skel.h-deps := xdp_hw_metadata.bpf.o 559xdp_features.skel.h-deps := xdp_features.bpf.o 560 561LINKED_BPF_OBJS := $(foreach skel,$(LINKED_SKELS),$($(skel)-deps)) 562LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(LINKED_BPF_OBJS)) 563 564HEADERS_FOR_BPF_OBJS := $(wildcard $(BPFDIR)/*.bpf.h) \ 565 $(addprefix $(BPFDIR)/, bpf_core_read.h \ 566 bpf_endian.h \ 567 bpf_helpers.h \ 568 bpf_tracing.h) 569 570# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on 571# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES. 572# Parameters: 573# $1 - test runner base binary name (e.g., test_progs) 574# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, bpf_gcc, etc) 575define DEFINE_TEST_RUNNER 576 577TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2 578TRUNNER_BINARY := $1$(if $2,-)$2 579TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \ 580 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c))) 581TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \ 582 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES))) 583TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES)) 584TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h 585TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c)) 586TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.bpf.o, $$(TRUNNER_BPF_SRCS)) 587TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \ 588 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\ 589 $$(TRUNNER_BPF_SRCS))) 590TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA)) 591TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS)) 592TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS) 593 594# Evaluate rules now with extra TRUNNER_XXX variables above already defined 595$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2)) 596 597endef 598 599# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and 600# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with: 601# $1 - test runner base binary name (e.g., test_progs) 602# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, bpf_gcc, etc) 603define DEFINE_TEST_RUNNER_RULES 604 605ifeq ($($(TRUNNER_OUTPUT)-dir),) 606$(TRUNNER_OUTPUT)-dir := y 607$(TRUNNER_OUTPUT): 608 $$(call msg,MKDIR,,$$@) 609 $(Q)mkdir -p $$@ 610endif 611 612# ensure we set up BPF objects generation rule just once for a given 613# input/output directory combination 614ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),) 615$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y 616$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o: \ 617 $(TRUNNER_BPF_PROGS_DIR)/%.c \ 618 $(TRUNNER_BPF_PROGS_DIR)/*.h \ 619 $$(INCLUDE_DIR)/vmlinux.h \ 620 $(HEADERS_FOR_BPF_OBJS) \ 621 | $(TRUNNER_OUTPUT) $$(BPFOBJ) 622 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \ 623 $(TRUNNER_BPF_CFLAGS) \ 624 $$($$<-CFLAGS) \ 625 $$($$<-$2-CFLAGS),$(TRUNNER_BINARY)) 626 627$(TRUNNER_BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 628 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 629 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$< 630 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o) 631 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o) 632 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o) 633 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$@ 634 $(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$(@:.skel.h=.subskel.h) 635 $(Q)rm -f $$(<:.o=.linked1.o) $$(<:.o=.linked2.o) $$(<:.o=.linked3.o) 636 637$(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 638 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 639 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$< 640 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o) 641 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o) 642 $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o) 643 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@ 644 $(Q)rm -f $$(<:.o=.llinked1.o) $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o) 645 646$(LINKED_BPF_OBJS): %: $(TRUNNER_OUTPUT)/% 647 648# .SECONDEXPANSION here allows to correctly expand %-deps variables as prerequisites 649.SECONDEXPANSION: 650$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_OUTPUT)/%: $$$$(%-deps) $(BPFTOOL) | $(TRUNNER_OUTPUT) 651 $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.bpf.o)) 652 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps)) 653 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o) 654 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o) 655 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o) 656 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 657 $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@ 658 $(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h) 659 $(Q)rm -f $$(@:.skel.h=.linked1.o) $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o) 660 661# When the compiler generates a %.d file, only skel basenames (not 662# full paths) are specified as prerequisites for corresponding %.o 663# file. vpath directives below instruct make to search for skel files 664# in TRUNNER_OUTPUT, if they are not present in the working directory. 665vpath %.skel.h $(TRUNNER_OUTPUT) 666vpath %.lskel.h $(TRUNNER_OUTPUT) 667vpath %.subskel.h $(TRUNNER_OUTPUT) 668 669endif 670 671# ensure we set up tests.h header generation rule just once 672ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),) 673$(TRUNNER_TESTS_DIR)-tests-hdr := y 674$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c 675 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@) 676 $$(shell (echo '/* Generated header, do not edit */'; \ 677 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \ 678 $(TRUNNER_TESTS_DIR)/*.c | sort ; \ 679 ) > $$@) 680endif 681 682# compile individual test files 683# Note: we cd into output directory to ensure embedded BPF object is found 684$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \ 685 $(TRUNNER_TESTS_DIR)/%.c \ 686 | $(TRUNNER_OUTPUT)/%.test.d 687 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@) 688 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -MMD -MT $$@ -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F) 689 690$(TRUNNER_TEST_OBJS:.o=.d): $(TRUNNER_OUTPUT)/%.test.d: \ 691 $(TRUNNER_TESTS_DIR)/%.c \ 692 $(TRUNNER_EXTRA_HDRS) \ 693 $(TRUNNER_BPF_SKELS) \ 694 $(TRUNNER_BPF_LSKELS) \ 695 $(TRUNNER_BPF_SKELS_LINKED) \ 696 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 697 698ifeq ($(filter clean docs-clean,$(MAKECMDGOALS)),) 699include $(wildcard $(TRUNNER_TEST_OBJS:.o=.d)) 700endif 701 702# add per extra obj CFGLAGS definitions 703$(foreach N,$(patsubst $(TRUNNER_OUTPUT)/%.o,%,$(TRUNNER_EXTRA_OBJS)), \ 704 $(eval $(TRUNNER_OUTPUT)/$(N).o: CFLAGS += $($(N).c-CFLAGS))) 705 706$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \ 707 %.c \ 708 $(TRUNNER_EXTRA_HDRS) \ 709 $(TRUNNER_TESTS_HDR) \ 710 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 711 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@) 712 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@ 713 714# non-flavored in-srctree builds receive special treatment, in particular, we 715# do not need to copy extra resources (see e.g. test_btf_dump_case()) 716$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT) 717ifneq ($2:$(OUTPUT),:$(shell pwd)) 718 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES)) 719 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/ 720endif 721 722$(OUTPUT)/$(TRUNNER_BINARY): LDLIBS += $$(LLVM_LDLIBS) 723$(OUTPUT)/$(TRUNNER_BINARY): LDFLAGS += $$(LLVM_LDFLAGS) 724 725# some X.test.o files have runtime dependencies on Y.bpf.o files 726$(OUTPUT)/$(TRUNNER_BINARY): | $(TRUNNER_BPF_OBJS) 727 728$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \ 729 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \ 730 $(RESOLVE_BTFIDS) \ 731 $(TRUNNER_BPFTOOL) \ 732 | $(TRUNNER_BINARY)-extras 733 $$(call msg,BINARY,,$$@) 734 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) $$(LDFLAGS) -o $$@ 735 $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.bpf.o $$@ 736 $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/$(USE_BOOTSTRAP)bpftool \ 737 $(OUTPUT)/$(if $2,$2/)bpftool 738 739endef 740 741# Define test_progs test runner. 742TRUNNER_TESTS_DIR := prog_tests 743TRUNNER_BPF_PROGS_DIR := progs 744TRUNNER_EXTRA_SOURCES := test_progs.c \ 745 cgroup_helpers.c \ 746 trace_helpers.c \ 747 network_helpers.c \ 748 testing_helpers.c \ 749 btf_helpers.c \ 750 cap_helpers.c \ 751 unpriv_helpers.c \ 752 netlink_helpers.c \ 753 jit_disasm_helpers.c \ 754 io_helpers.c \ 755 test_loader.c \ 756 xsk.c \ 757 disasm.c \ 758 disasm_helpers.c \ 759 json_writer.c \ 760 flow_dissector_load.h \ 761 ip_check_defrag_frags.h 762TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \ 763 $(OUTPUT)/bpf_test_no_cfi.ko \ 764 $(OUTPUT)/bpf_test_modorder_x.ko \ 765 $(OUTPUT)/bpf_test_modorder_y.ko \ 766 $(OUTPUT)/liburandom_read.so \ 767 $(OUTPUT)/xdp_synproxy \ 768 $(OUTPUT)/sign-file \ 769 $(OUTPUT)/uprobe_multi \ 770 ima_setup.sh \ 771 verify_sig_setup.sh \ 772 $(wildcard progs/btf_dump_test_case_*.c) \ 773 $(wildcard progs/*.bpf.o) 774TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE 775TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS 776$(eval $(call DEFINE_TEST_RUNNER,test_progs)) 777 778# Define test_progs-no_alu32 test runner. 779TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE 780TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) 781$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32)) 782 783# Define test_progs-cpuv4 test runner. 784ifneq ($(CLANG_CPUV4),) 785TRUNNER_BPF_BUILD_RULE := CLANG_CPUV4_BPF_BUILD_RULE 786TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS 787$(eval $(call DEFINE_TEST_RUNNER,test_progs,cpuv4)) 788endif 789 790# Define test_progs BPF-GCC-flavored test runner. 791ifneq ($(BPF_GCC),) 792TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE 793TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc,) 794$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc)) 795endif 796 797# Define test_maps test runner. 798TRUNNER_TESTS_DIR := map_tests 799TRUNNER_BPF_PROGS_DIR := progs 800TRUNNER_EXTRA_SOURCES := test_maps.c 801TRUNNER_EXTRA_FILES := 802TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built) 803TRUNNER_BPF_CFLAGS := 804$(eval $(call DEFINE_TEST_RUNNER,test_maps)) 805 806# Define test_verifier test runner. 807# It is much simpler than test_maps/test_progs and sufficiently different from 808# them (e.g., test.h is using completely pattern), that it's worth just 809# explicitly defining all the rules explicitly. 810verifier/tests.h: verifier/*.c 811 $(shell ( cd verifier/; \ 812 echo '/* Generated header, do not edit */'; \ 813 echo '#ifdef FILL_ARRAY'; \ 814 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \ 815 echo '#endif' \ 816 ) > verifier/tests.h) 817$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT) 818 $(call msg,BINARY,,$@) 819 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 820 821# Include find_bit.c to compile xskxceiver. 822EXTRA_SRC := $(TOOLSDIR)/lib/find_bit.c 823$(OUTPUT)/xskxceiver: $(EXTRA_SRC) xskxceiver.c xskxceiver.h $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xsk_xdp_progs.skel.h $(BPFOBJ) | $(OUTPUT) 824 $(call msg,BINARY,,$@) 825 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 826 827$(OUTPUT)/xdp_hw_metadata: xdp_hw_metadata.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xdp_hw_metadata.skel.h | $(OUTPUT) 828 $(call msg,BINARY,,$@) 829 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 830 831$(OUTPUT)/xdp_features: xdp_features.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xdp_features.skel.h | $(OUTPUT) 832 $(call msg,BINARY,,$@) 833 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 834 835# Make sure we are able to include and link libbpf against c++. 836$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ) 837 $(call msg,CXX,,$@) 838 $(Q)$(CXX) $(subst -D_GNU_SOURCE=,,$(CFLAGS)) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@ 839 840# Benchmark runner 841$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ) 842 $(call msg,CC,,$@) 843 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@ 844$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h 845$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h 846$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \ 847 $(OUTPUT)/perfbuf_bench.skel.h 848$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h 849$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h 850$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h 851$(OUTPUT)/bench_bpf_hashmap_full_update.o: $(OUTPUT)/bpf_hashmap_full_update_bench.skel.h 852$(OUTPUT)/bench_local_storage.o: $(OUTPUT)/local_storage_bench.skel.h 853$(OUTPUT)/bench_local_storage_rcu_tasks_trace.o: $(OUTPUT)/local_storage_rcu_tasks_trace_bench.skel.h 854$(OUTPUT)/bench_local_storage_create.o: $(OUTPUT)/bench_local_storage_create.skel.h 855$(OUTPUT)/bench_bpf_hashmap_lookup.o: $(OUTPUT)/bpf_hashmap_lookup.skel.h 856$(OUTPUT)/bench_htab_mem.o: $(OUTPUT)/htab_mem_bench.skel.h 857$(OUTPUT)/bench_bpf_crypto.o: $(OUTPUT)/crypto_bench.skel.h 858$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ) 859$(OUTPUT)/bench: LDLIBS += -lm 860$(OUTPUT)/bench: $(OUTPUT)/bench.o \ 861 $(TESTING_HELPERS) \ 862 $(TRACE_HELPERS) \ 863 $(CGROUP_HELPERS) \ 864 $(OUTPUT)/bench_count.o \ 865 $(OUTPUT)/bench_rename.o \ 866 $(OUTPUT)/bench_trigger.o \ 867 $(OUTPUT)/bench_ringbufs.o \ 868 $(OUTPUT)/bench_bloom_filter_map.o \ 869 $(OUTPUT)/bench_bpf_loop.o \ 870 $(OUTPUT)/bench_strncmp.o \ 871 $(OUTPUT)/bench_bpf_hashmap_full_update.o \ 872 $(OUTPUT)/bench_local_storage.o \ 873 $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o \ 874 $(OUTPUT)/bench_bpf_hashmap_lookup.o \ 875 $(OUTPUT)/bench_local_storage_create.o \ 876 $(OUTPUT)/bench_htab_mem.o \ 877 $(OUTPUT)/bench_bpf_crypto.o \ 878 # 879 $(call msg,BINARY,,$@) 880 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ 881 882$(OUTPUT)/veristat.o: $(BPFOBJ) 883$(OUTPUT)/veristat: $(OUTPUT)/veristat.o 884 $(call msg,BINARY,,$@) 885 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ 886 887# Linking uprobe_multi can fail due to relocation overflows on mips. 888$(OUTPUT)/uprobe_multi: CFLAGS += $(if $(filter mips, $(ARCH)),-mxgot) 889$(OUTPUT)/uprobe_multi: uprobe_multi.c uprobe_multi.ld 890 $(call msg,BINARY,,$@) 891 $(Q)$(CC) $(CFLAGS) -Wl,-T,uprobe_multi.ld -O0 $(LDFLAGS) \ 892 $(filter-out %.ld,$^) $(LDLIBS) -o $@ 893 894EXTRA_CLEAN := $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \ 895 prog_tests/tests.h map_tests/tests.h verifier/tests.h \ 896 feature bpftool \ 897 $(addprefix $(OUTPUT)/,*.o *.d *.skel.h *.lskel.h *.subskel.h \ 898 no_alu32 cpuv4 bpf_gcc bpf_testmod.ko \ 899 bpf_test_no_cfi.ko \ 900 bpf_test_modorder_x.ko \ 901 bpf_test_modorder_y.ko \ 902 liburandom_read.so) \ 903 $(OUTPUT)/FEATURE-DUMP.selftests 904 905.PHONY: docs docs-clean 906 907# Delete partially updated (corrupted) files on error 908.DELETE_ON_ERROR: 909 910DEFAULT_INSTALL_RULE := $(INSTALL_RULE) 911override define INSTALL_RULE 912 $(DEFAULT_INSTALL_RULE) 913 @for DIR in $(TEST_INST_SUBDIRS); do \ 914 mkdir -p $(INSTALL_PATH)/$$DIR; \ 915 rsync -a $(OUTPUT)/$$DIR/*.bpf.o $(INSTALL_PATH)/$$DIR;\ 916 done 917endef 918