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_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 153TEST_KMODS := bpf_testmod.ko bpf_test_no_cfi.ko bpf_test_modorder_x.ko \ 154 bpf_test_modorder_y.ko 155TEST_KMOD_TARGETS = $(addprefix $(OUTPUT)/,$(TEST_KMODS)) 156 157# Compile but not part of 'make run_tests' 158TEST_GEN_PROGS_EXTENDED = \ 159 bench \ 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 $(TEST_KMODS) 186 $(Q)$(RM) -r $(EXTRA_CLEAN) 187 $(Q)$(MAKE) -C test_kmods 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) $(TEST_KMODS) \ 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 $(PKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto) 306 307# This should really be a grouped target, but make versions before 4.3 don't 308# support that for regular rules. However, pattern matching rules are implicitly 309# treated as grouped even with older versions of make, so as a workaround, the 310# subst() turns the rule into a pattern matching rule 311$(addprefix test_kmods/,$(subst .ko,%ko,$(TEST_KMODS))): $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard test_kmods/Makefile test_kmods/*.[ch]) 312 $(Q)$(RM) test_kmods/*.ko test_kmods/*.mod.o # force re-compilation 313 $(Q)$(MAKE) $(submake_extras) -C test_kmods \ 314 RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) \ 315 EXTRA_CFLAGS='' EXTRA_LDFLAGS='' 316 317$(TEST_KMOD_TARGETS): $(addprefix test_kmods/,$(TEST_KMODS)) 318 $(call msg,MOD,,$@) 319 $(Q)cp test_kmods/$(@F) $@ 320 321 322DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool 323ifneq ($(CROSS_COMPILE),) 324CROSS_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool 325TRUNNER_BPFTOOL := $(CROSS_BPFTOOL) 326USE_BOOTSTRAP := "" 327else 328TRUNNER_BPFTOOL := $(DEFAULT_BPFTOOL) 329USE_BOOTSTRAP := "bootstrap/" 330endif 331 332$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT) 333 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \ 334 OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF) \ 335 BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 336 BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf/ \ 337 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) \ 338 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)' \ 339 EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)' && \ 340 cp $(RUNQSLOWER_OUTPUT)runqslower $@ 341 342TEST_GEN_PROGS_EXTENDED += $(TRUNNER_BPFTOOL) 343 344$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ) 345 346TESTING_HELPERS := $(OUTPUT)/testing_helpers.o 347CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o 348UNPRIV_HELPERS := $(OUTPUT)/unpriv_helpers.o 349TRACE_HELPERS := $(OUTPUT)/trace_helpers.o 350JSON_WRITER := $(OUTPUT)/json_writer.o 351CAP_HELPERS := $(OUTPUT)/cap_helpers.o 352NETWORK_HELPERS := $(OUTPUT)/network_helpers.o 353 354$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS) 355$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS) 356$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS) 357$(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TESTING_HELPERS) 358$(OUTPUT)/test_tag: $(TESTING_HELPERS) 359$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS) 360$(OUTPUT)/xdping: $(TESTING_HELPERS) 361$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS) 362$(OUTPUT)/test_maps: $(TESTING_HELPERS) 363$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) $(UNPRIV_HELPERS) 364$(OUTPUT)/xsk.o: $(BPFOBJ) 365 366BPFTOOL ?= $(DEFAULT_BPFTOOL) 367$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 368 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool 369 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 370 ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" \ 371 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)' \ 372 EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \ 373 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 374 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 375 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \ 376 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin 377 378ifneq ($(CROSS_COMPILE),) 379$(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 380 $(BPFOBJ) | $(BUILD_DIR)/bpftool 381 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 382 ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) \ 383 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)' \ 384 EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \ 385 OUTPUT=$(BUILD_DIR)/bpftool/ \ 386 LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/ \ 387 LIBBPF_DESTDIR=$(SCRATCH_DIR)/ \ 388 prefix= DESTDIR=$(SCRATCH_DIR)/ install-bin 389endif 390 391all: docs 392 393docs: 394 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \ 395 -f Makefile.docs \ 396 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 397 398docs-clean: 399 $(Q)$(MAKE) $(submake_extras) \ 400 -f Makefile.docs \ 401 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 402 403$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 404 $(APIDIR)/linux/bpf.h \ 405 | $(BUILD_DIR)/libbpf 406 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \ 407 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)' \ 408 EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)' \ 409 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers 410 411ifneq ($(BPFOBJ),$(HOST_BPFOBJ)) 412$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 413 $(APIDIR)/linux/bpf.h \ 414 | $(HOST_BUILD_DIR)/libbpf 415 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \ 416 ARCH= CROSS_COMPILE= \ 417 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)' \ 418 EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \ 419 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 420 CC="$(HOSTCC)" LD="$(HOSTLD)" \ 421 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers 422endif 423 424# vmlinux.h is first dumped to a temprorary file and then compared to 425# the previous version. This helps to avoid unnecessary re-builds of 426# $(TRUNNER_BPF_OBJS) 427$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR) 428ifeq ($(VMLINUX_H),) 429 $(call msg,GEN,,$@) 430 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $(INCLUDE_DIR)/.vmlinux.h.tmp 431 $(Q)cmp -s $(INCLUDE_DIR)/.vmlinux.h.tmp $@ || mv $(INCLUDE_DIR)/.vmlinux.h.tmp $@ 432else 433 $(call msg,CP,,$@) 434 $(Q)cp "$(VMLINUX_H)" $@ 435endif 436 437$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \ 438 $(TOOLSDIR)/bpf/resolve_btfids/main.c \ 439 $(TOOLSDIR)/lib/rbtree.c \ 440 $(TOOLSDIR)/lib/zalloc.c \ 441 $(TOOLSDIR)/lib/string.c \ 442 $(TOOLSDIR)/lib/ctype.c \ 443 $(TOOLSDIR)/lib/str_error_r.c 444 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \ 445 CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \ 446 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \ 447 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ) 448 449# Get Clang's default includes on this system, as opposed to those seen by 450# '--target=bpf'. This fixes "missing" files on some architectures/distros, 451# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 452# 453# Use '-idirafter': Don't interfere with include mechanics except where the 454# build would have failed anyways. 455define get_sys_includes 456$(shell $(1) $(2) -v -E - </dev/null 2>&1 \ 457 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \ 458$(shell $(1) $(2) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') \ 459$(shell $(1) $(2) -dM -E - </dev/null | grep '__loongarch_grlen ' | awk '{printf("-D__BITS_PER_LONG=%d", $$3)}') \ 460$(shell $(1) $(2) -dM -E - </dev/null | grep -E 'MIPS(EL|EB)|_MIPS_SZ(PTR|LONG) |_MIPS_SIM |_ABI(O32|N32|64) ' | awk '{printf("-D%s=%s ", $$2, $$3)}') 461endef 462 463# Determine target endianness. 464IS_LITTLE_ENDIAN := $(shell $(CC) -dM -E - </dev/null | \ 465 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__') 466MENDIAN:=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian) 467BPF_TARGET_ENDIAN:=$(if $(IS_LITTLE_ENDIAN),--target=bpfel,--target=bpfeb) 468 469ifneq ($(CROSS_COMPILE),) 470CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_COMPILE:%-=%)) 471endif 472 473CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARCH)) 474BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ 475 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \ 476 -I$(abspath $(OUTPUT)/../usr/include) \ 477 -Wno-compare-distinct-pointer-types 478# TODO: enable me -Wsign-compare 479 480CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) 481 482$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline 483$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline 484 485$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h 486$(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h 487 488# Build BPF object using Clang 489# $1 - input .c file 490# $2 - output .o file 491# $3 - CFLAGS 492# $4 - binary name 493define CLANG_BPF_BUILD_RULE 494 $(call msg,CLNG-BPF,$4,$2) 495 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v3 -o $2 496endef 497# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32 498define CLANG_NOALU32_BPF_BUILD_RULE 499 $(call msg,CLNG-BPF,$4,$2) 500 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v2 -o $2 501endef 502# Similar to CLANG_BPF_BUILD_RULE, but with cpu-v4 503define CLANG_CPUV4_BPF_BUILD_RULE 504 $(call msg,CLNG-BPF,$4,$2) 505 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v4 -o $2 506endef 507# Build BPF object using GCC 508define GCC_BPF_BUILD_RULE 509 $(call msg,GCC-BPF,$4,$2) 510 $(Q)$(BPF_GCC) $3 -DBPF_NO_PRESERVE_ACCESS_INDEX -Wno-attributes -O2 -c $1 -o $2 511endef 512 513SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c 514 515LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \ 516 linked_vars.skel.h linked_maps.skel.h \ 517 test_subskeleton.skel.h test_subskeleton_lib.skel.h \ 518 test_usdt.skel.h 519 520LSKELS := fentry_test.c fexit_test.c fexit_sleep.c atomics.c \ 521 trace_printk.c trace_vprintk.c map_ptr_kern.c \ 522 core_kern.c core_kern_overflow.c test_ringbuf.c \ 523 test_ringbuf_n.c test_ringbuf_map_key.c test_ringbuf_write.c 524 525# Generate both light skeleton and libbpf skeleton for these 526LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test.c \ 527 kfunc_call_test_subprog.c 528SKEL_BLACKLIST += $$(LSKELS) 529 530test_static_linked.skel.h-deps := test_static_linked1.bpf.o test_static_linked2.bpf.o 531linked_funcs.skel.h-deps := linked_funcs1.bpf.o linked_funcs2.bpf.o 532linked_vars.skel.h-deps := linked_vars1.bpf.o linked_vars2.bpf.o 533linked_maps.skel.h-deps := linked_maps1.bpf.o linked_maps2.bpf.o 534# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file 535# but that's created as a side-effect of the skel.h generation. 536test_subskeleton.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o test_subskeleton.bpf.o 537test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o 538test_usdt.skel.h-deps := test_usdt.bpf.o test_usdt_multispec.bpf.o 539xsk_xdp_progs.skel.h-deps := xsk_xdp_progs.bpf.o 540xdp_hw_metadata.skel.h-deps := xdp_hw_metadata.bpf.o 541xdp_features.skel.h-deps := xdp_features.bpf.o 542 543LINKED_BPF_OBJS := $(foreach skel,$(LINKED_SKELS),$($(skel)-deps)) 544LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(LINKED_BPF_OBJS)) 545 546HEADERS_FOR_BPF_OBJS := $(wildcard $(BPFDIR)/*.bpf.h) \ 547 $(addprefix $(BPFDIR)/, bpf_core_read.h \ 548 bpf_endian.h \ 549 bpf_helpers.h \ 550 bpf_tracing.h) 551 552# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on 553# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES. 554# Parameters: 555# $1 - test runner base binary name (e.g., test_progs) 556# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, bpf_gcc, etc) 557define DEFINE_TEST_RUNNER 558 559TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2 560TRUNNER_BINARY := $1$(if $2,-)$2 561TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \ 562 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c))) 563TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \ 564 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES))) 565TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES)) 566TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h 567TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c)) 568TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.bpf.o, $$(TRUNNER_BPF_SRCS)) 569TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \ 570 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\ 571 $$(TRUNNER_BPF_SRCS))) 572TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA)) 573TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS)) 574TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS) 575 576# Evaluate rules now with extra TRUNNER_XXX variables above already defined 577$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2)) 578 579endef 580 581# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and 582# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with: 583# $1 - test runner base binary name (e.g., test_progs) 584# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, bpf_gcc, etc) 585define DEFINE_TEST_RUNNER_RULES 586 587ifeq ($($(TRUNNER_OUTPUT)-dir),) 588$(TRUNNER_OUTPUT)-dir := y 589$(TRUNNER_OUTPUT): 590 $$(call msg,MKDIR,,$$@) 591 $(Q)mkdir -p $$@ 592endif 593 594# ensure we set up BPF objects generation rule just once for a given 595# input/output directory combination 596ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),) 597$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y 598$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o: \ 599 $(TRUNNER_BPF_PROGS_DIR)/%.c \ 600 $(TRUNNER_BPF_PROGS_DIR)/*.h \ 601 $$(INCLUDE_DIR)/vmlinux.h \ 602 $(HEADERS_FOR_BPF_OBJS) \ 603 | $(TRUNNER_OUTPUT) $$(BPFOBJ) 604 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \ 605 $(TRUNNER_BPF_CFLAGS) \ 606 $$($$<-CFLAGS) \ 607 $$($$<-$2-CFLAGS),$(TRUNNER_BINARY)) 608 609$(TRUNNER_BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 610 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 611 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$< 612 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o) 613 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o) 614 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o) 615 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$@ 616 $(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$(@:.skel.h=.subskel.h) 617 $(Q)rm -f $$(<:.o=.linked1.o) $$(<:.o=.linked2.o) $$(<:.o=.linked3.o) 618 619$(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 620 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 621 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$< 622 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o) 623 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o) 624 $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o) 625 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@ 626 $(Q)rm -f $$(<:.o=.llinked1.o) $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o) 627 628$(LINKED_BPF_OBJS): %: $(TRUNNER_OUTPUT)/% 629 630# .SECONDEXPANSION here allows to correctly expand %-deps variables as prerequisites 631.SECONDEXPANSION: 632$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_OUTPUT)/%: $$$$(%-deps) $(BPFTOOL) | $(TRUNNER_OUTPUT) 633 $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.bpf.o)) 634 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps)) 635 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o) 636 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o) 637 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o) 638 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 639 $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@ 640 $(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h) 641 $(Q)rm -f $$(@:.skel.h=.linked1.o) $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o) 642 643# When the compiler generates a %.d file, only skel basenames (not 644# full paths) are specified as prerequisites for corresponding %.o 645# file. vpath directives below instruct make to search for skel files 646# in TRUNNER_OUTPUT, if they are not present in the working directory. 647vpath %.skel.h $(TRUNNER_OUTPUT) 648vpath %.lskel.h $(TRUNNER_OUTPUT) 649vpath %.subskel.h $(TRUNNER_OUTPUT) 650 651endif 652 653# ensure we set up tests.h header generation rule just once 654ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),) 655$(TRUNNER_TESTS_DIR)-tests-hdr := y 656$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c 657 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@) 658 $$(shell (echo '/* Generated header, do not edit */'; \ 659 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \ 660 $(TRUNNER_TESTS_DIR)/*.c | sort ; \ 661 ) > $$@) 662endif 663 664# compile individual test files 665# Note: we cd into output directory to ensure embedded BPF object is found 666$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \ 667 $(TRUNNER_TESTS_DIR)/%.c \ 668 | $(TRUNNER_OUTPUT)/%.test.d 669 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@) 670 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -MMD -MT $$@ -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F) 671 672$(TRUNNER_TEST_OBJS:.o=.d): $(TRUNNER_OUTPUT)/%.test.d: \ 673 $(TRUNNER_TESTS_DIR)/%.c \ 674 $(TRUNNER_EXTRA_HDRS) \ 675 $(TRUNNER_BPF_SKELS) \ 676 $(TRUNNER_BPF_LSKELS) \ 677 $(TRUNNER_BPF_SKELS_LINKED) \ 678 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 679 680ifeq ($(filter clean docs-clean,$(MAKECMDGOALS)),) 681include $(wildcard $(TRUNNER_TEST_OBJS:.o=.d)) 682endif 683 684# add per extra obj CFGLAGS definitions 685$(foreach N,$(patsubst $(TRUNNER_OUTPUT)/%.o,%,$(TRUNNER_EXTRA_OBJS)), \ 686 $(eval $(TRUNNER_OUTPUT)/$(N).o: CFLAGS += $($(N).c-CFLAGS))) 687 688$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \ 689 %.c \ 690 $(TRUNNER_EXTRA_HDRS) \ 691 $(TRUNNER_TESTS_HDR) \ 692 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 693 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@) 694 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@ 695 696# non-flavored in-srctree builds receive special treatment, in particular, we 697# do not need to copy extra resources (see e.g. test_btf_dump_case()) 698$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT) 699ifneq ($2:$(OUTPUT),:$(shell pwd)) 700 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES)) 701 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/ 702endif 703 704$(OUTPUT)/$(TRUNNER_BINARY): LDLIBS += $$(LLVM_LDLIBS) 705$(OUTPUT)/$(TRUNNER_BINARY): LDFLAGS += $$(LLVM_LDFLAGS) 706 707# some X.test.o files have runtime dependencies on Y.bpf.o files 708$(OUTPUT)/$(TRUNNER_BINARY): | $(TRUNNER_BPF_OBJS) 709 710$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \ 711 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \ 712 $(RESOLVE_BTFIDS) \ 713 $(TRUNNER_BPFTOOL) \ 714 | $(TRUNNER_BINARY)-extras 715 $$(call msg,BINARY,,$$@) 716 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) $$(LDFLAGS) -o $$@ 717 $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.bpf.o $$@ 718 $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/$(USE_BOOTSTRAP)bpftool \ 719 $(OUTPUT)/$(if $2,$2/)bpftool 720 721endef 722 723# Define test_progs test runner. 724TRUNNER_TESTS_DIR := prog_tests 725TRUNNER_BPF_PROGS_DIR := progs 726TRUNNER_EXTRA_SOURCES := test_progs.c \ 727 cgroup_helpers.c \ 728 trace_helpers.c \ 729 network_helpers.c \ 730 testing_helpers.c \ 731 btf_helpers.c \ 732 cap_helpers.c \ 733 unpriv_helpers.c \ 734 netlink_helpers.c \ 735 jit_disasm_helpers.c \ 736 io_helpers.c \ 737 test_loader.c \ 738 xsk.c \ 739 disasm.c \ 740 disasm_helpers.c \ 741 json_writer.c \ 742 flow_dissector_load.h \ 743 ip_check_defrag_frags.h 744TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read \ 745 $(OUTPUT)/liburandom_read.so \ 746 $(OUTPUT)/xdp_synproxy \ 747 $(OUTPUT)/sign-file \ 748 $(OUTPUT)/uprobe_multi \ 749 $(TEST_KMOD_TARGETS) \ 750 ima_setup.sh \ 751 verify_sig_setup.sh \ 752 $(wildcard progs/btf_dump_test_case_*.c) \ 753 $(wildcard progs/*.bpf.o) 754TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE 755TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS 756$(eval $(call DEFINE_TEST_RUNNER,test_progs)) 757 758# Define test_progs-no_alu32 test runner. 759TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE 760TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) 761$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32)) 762 763# Define test_progs-cpuv4 test runner. 764ifneq ($(CLANG_CPUV4),) 765TRUNNER_BPF_BUILD_RULE := CLANG_CPUV4_BPF_BUILD_RULE 766TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS 767$(eval $(call DEFINE_TEST_RUNNER,test_progs,cpuv4)) 768endif 769 770# Define test_progs BPF-GCC-flavored test runner. 771ifneq ($(BPF_GCC),) 772TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE 773TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc,) 774$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc)) 775endif 776 777# Define test_maps test runner. 778TRUNNER_TESTS_DIR := map_tests 779TRUNNER_BPF_PROGS_DIR := progs 780TRUNNER_EXTRA_SOURCES := test_maps.c 781TRUNNER_EXTRA_FILES := 782TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built) 783TRUNNER_BPF_CFLAGS := 784$(eval $(call DEFINE_TEST_RUNNER,test_maps)) 785 786# Define test_verifier test runner. 787# It is much simpler than test_maps/test_progs and sufficiently different from 788# them (e.g., test.h is using completely pattern), that it's worth just 789# explicitly defining all the rules explicitly. 790verifier/tests.h: verifier/*.c 791 $(shell ( cd verifier/; \ 792 echo '/* Generated header, do not edit */'; \ 793 echo '#ifdef FILL_ARRAY'; \ 794 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \ 795 echo '#endif' \ 796 ) > verifier/tests.h) 797$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT) 798 $(call msg,BINARY,,$@) 799 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 800 801# Include find_bit.c to compile xskxceiver. 802EXTRA_SRC := $(TOOLSDIR)/lib/find_bit.c 803$(OUTPUT)/xskxceiver: $(EXTRA_SRC) xskxceiver.c xskxceiver.h $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xsk_xdp_progs.skel.h $(BPFOBJ) | $(OUTPUT) 804 $(call msg,BINARY,,$@) 805 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 806 807$(OUTPUT)/xdp_hw_metadata: xdp_hw_metadata.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xdp_hw_metadata.skel.h | $(OUTPUT) 808 $(call msg,BINARY,,$@) 809 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 810 811$(OUTPUT)/xdp_features: xdp_features.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xdp_features.skel.h | $(OUTPUT) 812 $(call msg,BINARY,,$@) 813 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 814 815# Make sure we are able to include and link libbpf against c++. 816$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ) 817 $(call msg,CXX,,$@) 818 $(Q)$(CXX) $(subst -D_GNU_SOURCE=,,$(CFLAGS)) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@ 819 820# Benchmark runner 821$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ) 822 $(call msg,CC,,$@) 823 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@ 824$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h 825$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h 826$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \ 827 $(OUTPUT)/perfbuf_bench.skel.h 828$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h 829$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h 830$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h 831$(OUTPUT)/bench_bpf_hashmap_full_update.o: $(OUTPUT)/bpf_hashmap_full_update_bench.skel.h 832$(OUTPUT)/bench_local_storage.o: $(OUTPUT)/local_storage_bench.skel.h 833$(OUTPUT)/bench_local_storage_rcu_tasks_trace.o: $(OUTPUT)/local_storage_rcu_tasks_trace_bench.skel.h 834$(OUTPUT)/bench_local_storage_create.o: $(OUTPUT)/bench_local_storage_create.skel.h 835$(OUTPUT)/bench_bpf_hashmap_lookup.o: $(OUTPUT)/bpf_hashmap_lookup.skel.h 836$(OUTPUT)/bench_htab_mem.o: $(OUTPUT)/htab_mem_bench.skel.h 837$(OUTPUT)/bench_bpf_crypto.o: $(OUTPUT)/crypto_bench.skel.h 838$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ) 839$(OUTPUT)/bench: LDLIBS += -lm 840$(OUTPUT)/bench: $(OUTPUT)/bench.o \ 841 $(TESTING_HELPERS) \ 842 $(TRACE_HELPERS) \ 843 $(CGROUP_HELPERS) \ 844 $(OUTPUT)/bench_count.o \ 845 $(OUTPUT)/bench_rename.o \ 846 $(OUTPUT)/bench_trigger.o \ 847 $(OUTPUT)/bench_ringbufs.o \ 848 $(OUTPUT)/bench_bloom_filter_map.o \ 849 $(OUTPUT)/bench_bpf_loop.o \ 850 $(OUTPUT)/bench_strncmp.o \ 851 $(OUTPUT)/bench_bpf_hashmap_full_update.o \ 852 $(OUTPUT)/bench_local_storage.o \ 853 $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o \ 854 $(OUTPUT)/bench_bpf_hashmap_lookup.o \ 855 $(OUTPUT)/bench_local_storage_create.o \ 856 $(OUTPUT)/bench_htab_mem.o \ 857 $(OUTPUT)/bench_bpf_crypto.o \ 858 # 859 $(call msg,BINARY,,$@) 860 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ 861 862$(OUTPUT)/veristat.o: $(BPFOBJ) 863$(OUTPUT)/veristat: $(OUTPUT)/veristat.o 864 $(call msg,BINARY,,$@) 865 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ 866 867# Linking uprobe_multi can fail due to relocation overflows on mips. 868$(OUTPUT)/uprobe_multi: CFLAGS += $(if $(filter mips, $(ARCH)),-mxgot) 869$(OUTPUT)/uprobe_multi: uprobe_multi.c uprobe_multi.ld 870 $(call msg,BINARY,,$@) 871 $(Q)$(CC) $(CFLAGS) -Wl,-T,uprobe_multi.ld -O0 $(LDFLAGS) \ 872 $(filter-out %.ld,$^) $(LDLIBS) -o $@ 873 874EXTRA_CLEAN := $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \ 875 prog_tests/tests.h map_tests/tests.h verifier/tests.h \ 876 feature bpftool $(TEST_KMOD_TARGETS) \ 877 $(addprefix $(OUTPUT)/,*.o *.d *.skel.h *.lskel.h *.subskel.h \ 878 no_alu32 cpuv4 bpf_gcc \ 879 liburandom_read.so) \ 880 $(OUTPUT)/FEATURE-DUMP.selftests 881 882.PHONY: docs docs-clean 883 884# Delete partially updated (corrupted) files on error 885.DELETE_ON_ERROR: 886 887DEFAULT_INSTALL_RULE := $(INSTALL_RULE) 888override define INSTALL_RULE 889 $(DEFAULT_INSTALL_RULE) 890 @for DIR in $(TEST_INST_SUBDIRS); do \ 891 mkdir -p $(INSTALL_PATH)/$$DIR; \ 892 rsync -a $(OUTPUT)/$$DIR/*.bpf.o $(INSTALL_PATH)/$$DIR;\ 893 done 894endef 895