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