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 15GENDIR := $(abspath ../../../../include/generated) 16GENHDR := $(GENDIR)/autoconf.h 17HOSTPKG_CONFIG := pkg-config 18 19ifneq ($(wildcard $(GENHDR)),) 20 GENFLAGS := -DHAVE_GENHDR 21endif 22 23BPF_GCC ?= $(shell command -v bpf-gcc;) 24SAN_CFLAGS ?= 25SAN_LDFLAGS ?= $(SAN_CFLAGS) 26CFLAGS += -g -O0 -rdynamic -Wall -Werror $(GENFLAGS) $(SAN_CFLAGS) \ 27 -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \ 28 -I$(TOOLSINCDIR) -I$(APIDIR) -I$(OUTPUT) 29LDFLAGS += $(SAN_LDFLAGS) 30LDLIBS += -lelf -lz -lrt -lpthread 31 32# Silence some warnings when compiled with clang 33ifneq ($(LLVM),) 34CFLAGS += -Wno-unused-command-line-argument 35endif 36 37# Order correspond to 'make run_tests' order 38TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \ 39 test_dev_cgroup \ 40 test_sock test_sockmap get_cgroup_id_user \ 41 test_cgroup_storage \ 42 test_tcpnotify_user test_sysctl \ 43 test_progs-no_alu32 44 45# Also test bpf-gcc, if present 46ifneq ($(BPF_GCC),) 47TEST_GEN_PROGS += test_progs-bpf_gcc 48endif 49 50TEST_GEN_FILES = test_lwt_ip_encap.bpf.o test_tc_edt.bpf.o 51TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c) 52 53# Order correspond to 'make run_tests' order 54TEST_PROGS := test_kmod.sh \ 55 test_xdp_redirect.sh \ 56 test_xdp_redirect_multi.sh \ 57 test_xdp_meta.sh \ 58 test_xdp_veth.sh \ 59 test_offload.py \ 60 test_sock_addr.sh \ 61 test_tunnel.sh \ 62 test_lwt_seg6local.sh \ 63 test_lirc_mode2.sh \ 64 test_skb_cgroup_id.sh \ 65 test_flow_dissector.sh \ 66 test_xdp_vlan_mode_generic.sh \ 67 test_xdp_vlan_mode_native.sh \ 68 test_lwt_ip_encap.sh \ 69 test_tcp_check_syncookie.sh \ 70 test_tc_tunnel.sh \ 71 test_tc_edt.sh \ 72 test_xdping.sh \ 73 test_bpftool_build.sh \ 74 test_bpftool.sh \ 75 test_bpftool_metadata.sh \ 76 test_doc_build.sh \ 77 test_xsk.sh \ 78 test_xdp_features.sh 79 80TEST_PROGS_EXTENDED := with_addr.sh \ 81 with_tunnels.sh ima_setup.sh verify_sig_setup.sh \ 82 test_xdp_vlan.sh test_bpftool.py 83 84# Compile but not part of 'make run_tests' 85TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \ 86 flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \ 87 test_lirc_mode2_user xdping test_cpp runqslower bench bpf_testmod.ko \ 88 xskxceiver xdp_redirect_multi xdp_synproxy veristat xdp_hw_metadata \ 89 xdp_features 90 91TEST_GEN_FILES += liburandom_read.so urandom_read sign-file 92 93# Emit succinct information message describing current building step 94# $1 - generic step name (e.g., CC, LINK, etc); 95# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor]; 96# $3 - target (assumed to be file); only file name will be emitted; 97# $4 - optional extra arg, emitted as-is, if provided. 98ifeq ($(V),1) 99Q = 100msg = 101else 102Q = @ 103msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))"; 104MAKEFLAGS += --no-print-directory 105submake_extras := feature_display=0 106endif 107 108# override lib.mk's default rules 109OVERRIDE_TARGETS := 1 110override define CLEAN 111 $(call msg,CLEAN) 112 $(Q)$(RM) -r $(TEST_GEN_PROGS) 113 $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED) 114 $(Q)$(RM) -r $(TEST_GEN_FILES) 115 $(Q)$(RM) -r $(EXTRA_CLEAN) 116 $(Q)$(MAKE) -C bpf_testmod clean 117 $(Q)$(MAKE) docs-clean 118endef 119 120include ../lib.mk 121 122SCRATCH_DIR := $(OUTPUT)/tools 123BUILD_DIR := $(SCRATCH_DIR)/build 124INCLUDE_DIR := $(SCRATCH_DIR)/include 125BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a 126ifneq ($(CROSS_COMPILE),) 127HOST_BUILD_DIR := $(BUILD_DIR)/host 128HOST_SCRATCH_DIR := $(OUTPUT)/host-tools 129HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include 130else 131HOST_BUILD_DIR := $(BUILD_DIR) 132HOST_SCRATCH_DIR := $(SCRATCH_DIR) 133HOST_INCLUDE_DIR := $(INCLUDE_DIR) 134endif 135HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a 136RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids 137RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/ 138 139VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \ 140 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \ 141 ../../../../vmlinux \ 142 /sys/kernel/btf/vmlinux \ 143 /boot/vmlinux-$(shell uname -r) 144VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) 145ifeq ($(VMLINUX_BTF),) 146$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)") 147endif 148 149# Define simple and short `make test_progs`, `make test_sysctl`, etc targets 150# to build individual tests. 151# NOTE: Semicolon at the end is critical to override lib.mk's default static 152# rule for binaries. 153$(notdir $(TEST_GEN_PROGS) \ 154 $(TEST_GEN_PROGS_EXTENDED) \ 155 $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ; 156 157# sort removes libbpf duplicates when not cross-building 158MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \ 159 $(BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/bpftool \ 160 $(HOST_BUILD_DIR)/resolve_btfids \ 161 $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR)) 162$(MAKE_DIRS): 163 $(call msg,MKDIR,,$@) 164 $(Q)mkdir -p $@ 165 166$(OUTPUT)/%.o: %.c 167 $(call msg,CC,,$@) 168 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@ 169 170$(OUTPUT)/%:%.c 171 $(call msg,BINARY,,$@) 172 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@ 173 174# LLVM's ld.lld doesn't support all the architectures, so use it only on x86 175ifeq ($(SRCARCH),x86) 176LLD := lld 177else 178LLD := ld 179endif 180 181# Filter out -static for liburandom_read.so and its dependent targets so that static builds 182# do not fail. Static builds leave urandom_read relying on system-wide shared libraries. 183$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c 184 $(call msg,LIB,,$@) 185 $(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) \ 186 $^ $(filter-out -static,$(LDLIBS)) \ 187 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ 188 -fPIC -shared -o $@ 189 190$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so 191 $(call msg,BINARY,,$@) 192 $(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \ 193 -lurandom_read $(filter-out -static,$(LDLIBS)) -L$(OUTPUT) \ 194 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ 195 -Wl,-rpath=. -o $@ 196 197$(OUTPUT)/sign-file: ../../../../scripts/sign-file.c 198 $(call msg,SIGN-FILE,,$@) 199 $(Q)$(CC) $(shell $(HOSTPKG_CONFIG) --cflags libcrypto 2> /dev/null) \ 200 $< -o $@ \ 201 $(shell $(HOSTPKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto) 202 203$(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch]) 204 $(call msg,MOD,,$@) 205 $(Q)$(RM) bpf_testmod/bpf_testmod.ko # force re-compilation 206 $(Q)$(MAKE) $(submake_extras) RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) -C bpf_testmod 207 $(Q)cp bpf_testmod/bpf_testmod.ko $@ 208 209DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool 210ifneq ($(CROSS_COMPILE),) 211CROSS_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool 212TRUNNER_BPFTOOL := $(CROSS_BPFTOOL) 213USE_BOOTSTRAP := "" 214else 215TRUNNER_BPFTOOL := $(DEFAULT_BPFTOOL) 216USE_BOOTSTRAP := "bootstrap/" 217endif 218 219$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT) 220 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \ 221 OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF) \ 222 BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 223 BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf \ 224 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) \ 225 EXTRA_CFLAGS='-g -O0 $(SAN_CFLAGS)' \ 226 EXTRA_LDFLAGS='$(SAN_LDFLAGS)' && \ 227 cp $(RUNQSLOWER_OUTPUT)runqslower $@ 228 229TEST_GEN_PROGS_EXTENDED += $(TRUNNER_BPFTOOL) 230 231$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ) 232 233TESTING_HELPERS := $(OUTPUT)/testing_helpers.o 234CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o 235UNPRIV_HELPERS := $(OUTPUT)/unpriv_helpers.o 236TRACE_HELPERS := $(OUTPUT)/trace_helpers.o 237JSON_WRITER := $(OUTPUT)/json_writer.o 238CAP_HELPERS := $(OUTPUT)/cap_helpers.o 239 240$(OUTPUT)/test_dev_cgroup: $(CGROUP_HELPERS) $(TESTING_HELPERS) 241$(OUTPUT)/test_skb_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) 242$(OUTPUT)/test_sock: $(CGROUP_HELPERS) $(TESTING_HELPERS) 243$(OUTPUT)/test_sock_addr: $(CGROUP_HELPERS) $(TESTING_HELPERS) 244$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS) 245$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS) 246$(OUTPUT)/get_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) 247$(OUTPUT)/test_cgroup_storage: $(CGROUP_HELPERS) $(TESTING_HELPERS) 248$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS) 249$(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TESTING_HELPERS) 250$(OUTPUT)/test_tag: $(TESTING_HELPERS) 251$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS) 252$(OUTPUT)/xdping: $(TESTING_HELPERS) 253$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS) 254$(OUTPUT)/test_maps: $(TESTING_HELPERS) 255$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) $(UNPRIV_HELPERS) 256$(OUTPUT)/xsk.o: $(BPFOBJ) 257 258BPFTOOL ?= $(DEFAULT_BPFTOOL) 259$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 260 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool 261 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 262 ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" \ 263 EXTRA_CFLAGS='-g -O0' \ 264 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 265 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 266 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \ 267 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin 268 269ifneq ($(CROSS_COMPILE),) 270$(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 271 $(BPFOBJ) | $(BUILD_DIR)/bpftool 272 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 273 ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) \ 274 EXTRA_CFLAGS='-g -O0' \ 275 OUTPUT=$(BUILD_DIR)/bpftool/ \ 276 LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/ \ 277 LIBBPF_DESTDIR=$(SCRATCH_DIR)/ \ 278 prefix= DESTDIR=$(SCRATCH_DIR)/ install-bin 279endif 280 281all: docs 282 283docs: 284 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \ 285 -f Makefile.docs \ 286 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 287 288docs-clean: 289 $(Q)$(MAKE) $(submake_extras) \ 290 -f Makefile.docs \ 291 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 292 293$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 294 $(APIDIR)/linux/bpf.h \ 295 | $(BUILD_DIR)/libbpf 296 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \ 297 EXTRA_CFLAGS='-g -O0 $(SAN_CFLAGS)' \ 298 EXTRA_LDFLAGS='$(SAN_LDFLAGS)' \ 299 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers 300 301ifneq ($(BPFOBJ),$(HOST_BPFOBJ)) 302$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 303 $(APIDIR)/linux/bpf.h \ 304 | $(HOST_BUILD_DIR)/libbpf 305 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \ 306 EXTRA_CFLAGS='-g -O0' ARCH= CROSS_COMPILE= \ 307 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 308 CC="$(HOSTCC)" LD="$(HOSTLD)" \ 309 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers 310endif 311 312$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR) 313ifeq ($(VMLINUX_H),) 314 $(call msg,GEN,,$@) 315 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@ 316else 317 $(call msg,CP,,$@) 318 $(Q)cp "$(VMLINUX_H)" $@ 319endif 320 321$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \ 322 $(TOOLSDIR)/bpf/resolve_btfids/main.c \ 323 $(TOOLSDIR)/lib/rbtree.c \ 324 $(TOOLSDIR)/lib/zalloc.c \ 325 $(TOOLSDIR)/lib/string.c \ 326 $(TOOLSDIR)/lib/ctype.c \ 327 $(TOOLSDIR)/lib/str_error_r.c 328 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \ 329 CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \ 330 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \ 331 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ) 332 333# Get Clang's default includes on this system, as opposed to those seen by 334# '-target bpf'. This fixes "missing" files on some architectures/distros, 335# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 336# 337# Use '-idirafter': Don't interfere with include mechanics except where the 338# build would have failed anyways. 339define get_sys_includes 340$(shell $(1) $(2) -v -E - </dev/null 2>&1 \ 341 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \ 342$(shell $(1) $(2) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') \ 343$(shell $(1) $(2) -dM -E - </dev/null | grep '__loongarch_grlen ' | awk '{printf("-D__BITS_PER_LONG=%d", $$3)}') 344endef 345 346# Determine target endianness. 347IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \ 348 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__') 349MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian) 350 351ifneq ($(CROSS_COMPILE),) 352CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_COMPILE:%-=%)) 353endif 354 355CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARCH)) 356BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ 357 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \ 358 -I$(abspath $(OUTPUT)/../usr/include) 359 360CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \ 361 -Wno-compare-distinct-pointer-types 362 363$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline 364$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline 365 366$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h 367$(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h 368 369# Build BPF object using Clang 370# $1 - input .c file 371# $2 - output .o file 372# $3 - CFLAGS 373define CLANG_BPF_BUILD_RULE 374 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 375 $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v3 -o $2 376endef 377# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32 378define CLANG_NOALU32_BPF_BUILD_RULE 379 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 380 $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v2 -o $2 381endef 382# Build BPF object using GCC 383define GCC_BPF_BUILD_RULE 384 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2) 385 $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2 386endef 387 388SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c 389 390LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \ 391 linked_vars.skel.h linked_maps.skel.h \ 392 test_subskeleton.skel.h test_subskeleton_lib.skel.h \ 393 test_usdt.skel.h 394 395LSKELS := fentry_test.c fexit_test.c fexit_sleep.c atomics.c \ 396 trace_printk.c trace_vprintk.c map_ptr_kern.c \ 397 core_kern.c core_kern_overflow.c test_ringbuf.c \ 398 test_ringbuf_map_key.c 399 400# Generate both light skeleton and libbpf skeleton for these 401LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test.c \ 402 kfunc_call_test_subprog.c 403SKEL_BLACKLIST += $$(LSKELS) 404 405test_static_linked.skel.h-deps := test_static_linked1.bpf.o test_static_linked2.bpf.o 406linked_funcs.skel.h-deps := linked_funcs1.bpf.o linked_funcs2.bpf.o 407linked_vars.skel.h-deps := linked_vars1.bpf.o linked_vars2.bpf.o 408linked_maps.skel.h-deps := linked_maps1.bpf.o linked_maps2.bpf.o 409# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file 410# but that's created as a side-effect of the skel.h generation. 411test_subskeleton.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o test_subskeleton.bpf.o 412test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o 413test_usdt.skel.h-deps := test_usdt.bpf.o test_usdt_multispec.bpf.o 414xsk_xdp_progs.skel.h-deps := xsk_xdp_progs.bpf.o 415xdp_hw_metadata.skel.h-deps := xdp_hw_metadata.bpf.o 416xdp_features.skel.h-deps := xdp_features.bpf.o 417 418LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps))) 419 420# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on 421# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES. 422# Parameters: 423# $1 - test runner base binary name (e.g., test_progs) 424# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc) 425define DEFINE_TEST_RUNNER 426 427TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2 428TRUNNER_BINARY := $1$(if $2,-)$2 429TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \ 430 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c))) 431TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \ 432 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES))) 433TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES)) 434TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h 435TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c)) 436TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.bpf.o, $$(TRUNNER_BPF_SRCS)) 437TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \ 438 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\ 439 $$(TRUNNER_BPF_SRCS))) 440TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA)) 441TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS)) 442TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS) 443 444# Evaluate rules now with extra TRUNNER_XXX variables above already defined 445$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2)) 446 447endef 448 449# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and 450# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with: 451# $1 - test runner base binary name (e.g., test_progs) 452# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc) 453define DEFINE_TEST_RUNNER_RULES 454 455ifeq ($($(TRUNNER_OUTPUT)-dir),) 456$(TRUNNER_OUTPUT)-dir := y 457$(TRUNNER_OUTPUT): 458 $$(call msg,MKDIR,,$$@) 459 $(Q)mkdir -p $$@ 460endif 461 462# ensure we set up BPF objects generation rule just once for a given 463# input/output directory combination 464ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),) 465$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y 466$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o: \ 467 $(TRUNNER_BPF_PROGS_DIR)/%.c \ 468 $(TRUNNER_BPF_PROGS_DIR)/*.h \ 469 $$(INCLUDE_DIR)/vmlinux.h \ 470 $(wildcard $(BPFDIR)/bpf_*.h) \ 471 $(wildcard $(BPFDIR)/*.bpf.h) \ 472 | $(TRUNNER_OUTPUT) $$(BPFOBJ) 473 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \ 474 $(TRUNNER_BPF_CFLAGS)) 475 476$(TRUNNER_BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 477 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 478 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$< 479 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o) 480 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o) 481 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o) 482 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$@ 483 $(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$(@:.skel.h=.subskel.h) 484 485$(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 486 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 487 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$< 488 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o) 489 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o) 490 $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o) 491 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@ 492 493$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_BPF_OBJS) $(BPFTOOL) | $(TRUNNER_OUTPUT) 494 $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.bpf.o)) 495 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps)) 496 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o) 497 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o) 498 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o) 499 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 500 $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@ 501 $(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h) 502endif 503 504# ensure we set up tests.h header generation rule just once 505ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),) 506$(TRUNNER_TESTS_DIR)-tests-hdr := y 507$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c 508 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@) 509 $$(shell (echo '/* Generated header, do not edit */'; \ 510 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \ 511 $(TRUNNER_TESTS_DIR)/*.c | sort ; \ 512 ) > $$@) 513endif 514 515# compile individual test files 516# Note: we cd into output directory to ensure embedded BPF object is found 517$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \ 518 $(TRUNNER_TESTS_DIR)/%.c \ 519 $(TRUNNER_EXTRA_HDRS) \ 520 $(TRUNNER_BPF_OBJS) \ 521 $(TRUNNER_BPF_SKELS) \ 522 $(TRUNNER_BPF_LSKELS) \ 523 $(TRUNNER_BPF_SKELS_LINKED) \ 524 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 525 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@) 526 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F) 527 528$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \ 529 %.c \ 530 $(TRUNNER_EXTRA_HDRS) \ 531 $(TRUNNER_TESTS_HDR) \ 532 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 533 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@) 534 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@ 535 536# non-flavored in-srctree builds receive special treatment, in particular, we 537# do not need to copy extra resources (see e.g. test_btf_dump_case()) 538$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT) 539ifneq ($2:$(OUTPUT),:$(shell pwd)) 540 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES)) 541 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/ 542endif 543 544$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \ 545 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \ 546 $(RESOLVE_BTFIDS) \ 547 $(TRUNNER_BPFTOOL) \ 548 | $(TRUNNER_BINARY)-extras 549 $$(call msg,BINARY,,$$@) 550 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@ 551 $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.bpf.o $$@ 552 $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/$(USE_BOOTSTRAP)bpftool \ 553 $(OUTPUT)/$(if $2,$2/)bpftool 554 555endef 556 557# Define test_progs test runner. 558TRUNNER_TESTS_DIR := prog_tests 559TRUNNER_BPF_PROGS_DIR := progs 560TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c \ 561 network_helpers.c testing_helpers.c \ 562 btf_helpers.c flow_dissector_load.h \ 563 cap_helpers.c test_loader.c xsk.c disasm.c \ 564 json_writer.c unpriv_helpers.c 565 566TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \ 567 $(OUTPUT)/liburandom_read.so \ 568 $(OUTPUT)/xdp_synproxy \ 569 $(OUTPUT)/sign-file \ 570 ima_setup.sh \ 571 verify_sig_setup.sh \ 572 $(wildcard progs/btf_dump_test_case_*.c) \ 573 $(wildcard progs/*.bpf.o) 574TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE 575TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS 576$(eval $(call DEFINE_TEST_RUNNER,test_progs)) 577 578# Define test_progs-no_alu32 test runner. 579TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE 580TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) 581$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32)) 582 583# Define test_progs BPF-GCC-flavored test runner. 584ifneq ($(BPF_GCC),) 585TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE 586TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc,) 587$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc)) 588endif 589 590# Define test_maps test runner. 591TRUNNER_TESTS_DIR := map_tests 592TRUNNER_BPF_PROGS_DIR := progs 593TRUNNER_EXTRA_SOURCES := test_maps.c 594TRUNNER_EXTRA_FILES := 595TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built) 596TRUNNER_BPF_CFLAGS := 597$(eval $(call DEFINE_TEST_RUNNER,test_maps)) 598 599# Define test_verifier test runner. 600# It is much simpler than test_maps/test_progs and sufficiently different from 601# them (e.g., test.h is using completely pattern), that it's worth just 602# explicitly defining all the rules explicitly. 603verifier/tests.h: verifier/*.c 604 $(shell ( cd verifier/; \ 605 echo '/* Generated header, do not edit */'; \ 606 echo '#ifdef FILL_ARRAY'; \ 607 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \ 608 echo '#endif' \ 609 ) > verifier/tests.h) 610$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT) 611 $(call msg,BINARY,,$@) 612 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 613 614$(OUTPUT)/xskxceiver: xskxceiver.c xskxceiver.h $(OUTPUT)/xsk.o $(OUTPUT)/xsk_xdp_progs.skel.h $(BPFOBJ) | $(OUTPUT) 615 $(call msg,BINARY,,$@) 616 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 617 618$(OUTPUT)/xdp_hw_metadata: xdp_hw_metadata.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xdp_hw_metadata.skel.h | $(OUTPUT) 619 $(call msg,BINARY,,$@) 620 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 621 622$(OUTPUT)/xdp_features: xdp_features.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xdp_features.skel.h | $(OUTPUT) 623 $(call msg,BINARY,,$@) 624 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 625 626# Make sure we are able to include and link libbpf against c++. 627$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ) 628 $(call msg,CXX,,$@) 629 $(Q)$(CXX) $(CFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@ 630 631# Benchmark runner 632$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ) 633 $(call msg,CC,,$@) 634 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@ 635$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h 636$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h 637$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \ 638 $(OUTPUT)/perfbuf_bench.skel.h 639$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h 640$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h 641$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h 642$(OUTPUT)/bench_bpf_hashmap_full_update.o: $(OUTPUT)/bpf_hashmap_full_update_bench.skel.h 643$(OUTPUT)/bench_local_storage.o: $(OUTPUT)/local_storage_bench.skel.h 644$(OUTPUT)/bench_local_storage_rcu_tasks_trace.o: $(OUTPUT)/local_storage_rcu_tasks_trace_bench.skel.h 645$(OUTPUT)/bench_local_storage_create.o: $(OUTPUT)/bench_local_storage_create.skel.h 646$(OUTPUT)/bench_bpf_hashmap_lookup.o: $(OUTPUT)/bpf_hashmap_lookup.skel.h 647$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ) 648$(OUTPUT)/bench: LDLIBS += -lm 649$(OUTPUT)/bench: $(OUTPUT)/bench.o \ 650 $(TESTING_HELPERS) \ 651 $(TRACE_HELPERS) \ 652 $(OUTPUT)/bench_count.o \ 653 $(OUTPUT)/bench_rename.o \ 654 $(OUTPUT)/bench_trigger.o \ 655 $(OUTPUT)/bench_ringbufs.o \ 656 $(OUTPUT)/bench_bloom_filter_map.o \ 657 $(OUTPUT)/bench_bpf_loop.o \ 658 $(OUTPUT)/bench_strncmp.o \ 659 $(OUTPUT)/bench_bpf_hashmap_full_update.o \ 660 $(OUTPUT)/bench_local_storage.o \ 661 $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o \ 662 $(OUTPUT)/bench_bpf_hashmap_lookup.o \ 663 $(OUTPUT)/bench_local_storage_create.o \ 664 # 665 $(call msg,BINARY,,$@) 666 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ 667 668$(OUTPUT)/veristat.o: $(BPFOBJ) 669$(OUTPUT)/veristat: $(OUTPUT)/veristat.o 670 $(call msg,BINARY,,$@) 671 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ 672 673EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \ 674 prog_tests/tests.h map_tests/tests.h verifier/tests.h \ 675 feature bpftool \ 676 $(addprefix $(OUTPUT)/,*.o *.skel.h *.lskel.h *.subskel.h \ 677 no_alu32 bpf_gcc bpf_testmod.ko \ 678 liburandom_read.so) 679 680.PHONY: docs docs-clean 681 682# Delete partially updated (corrupted) files on error 683.DELETE_ON_ERROR: 684