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_CUSTOM_PROGS = $(OUTPUT)/urandom_read $(OUTPUT)/sign-file 92TEST_GEN_FILES += liburandom_read.so 93 94# Emit succinct information message describing current building step 95# $1 - generic step name (e.g., CC, LINK, etc); 96# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor]; 97# $3 - target (assumed to be file); only file name will be emitted; 98# $4 - optional extra arg, emitted as-is, if provided. 99ifeq ($(V),1) 100Q = 101msg = 102else 103Q = @ 104msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))"; 105MAKEFLAGS += --no-print-directory 106submake_extras := feature_display=0 107endif 108 109# override lib.mk's default rules 110OVERRIDE_TARGETS := 1 111override define CLEAN 112 $(call msg,CLEAN) 113 $(Q)$(RM) -r $(TEST_GEN_PROGS) 114 $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED) 115 $(Q)$(RM) -r $(TEST_GEN_FILES) 116 $(Q)$(RM) -r $(EXTRA_CLEAN) 117 $(Q)$(MAKE) -C bpf_testmod clean 118 $(Q)$(MAKE) docs-clean 119endef 120 121include ../lib.mk 122 123SCRATCH_DIR := $(OUTPUT)/tools 124BUILD_DIR := $(SCRATCH_DIR)/build 125INCLUDE_DIR := $(SCRATCH_DIR)/include 126BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a 127ifneq ($(CROSS_COMPILE),) 128HOST_BUILD_DIR := $(BUILD_DIR)/host 129HOST_SCRATCH_DIR := $(OUTPUT)/host-tools 130HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include 131else 132HOST_BUILD_DIR := $(BUILD_DIR) 133HOST_SCRATCH_DIR := $(SCRATCH_DIR) 134HOST_INCLUDE_DIR := $(INCLUDE_DIR) 135endif 136HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a 137RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids 138RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/ 139 140VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \ 141 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \ 142 ../../../../vmlinux \ 143 /sys/kernel/btf/vmlinux \ 144 /boot/vmlinux-$(shell uname -r) 145VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) 146ifeq ($(VMLINUX_BTF),) 147$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)") 148endif 149 150# Define simple and short `make test_progs`, `make test_sysctl`, etc targets 151# to build individual tests. 152# NOTE: Semicolon at the end is critical to override lib.mk's default static 153# rule for binaries. 154$(notdir $(TEST_GEN_PROGS) \ 155 $(TEST_GEN_PROGS_EXTENDED) \ 156 $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ; 157 158# sort removes libbpf duplicates when not cross-building 159MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \ 160 $(BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/bpftool \ 161 $(HOST_BUILD_DIR)/resolve_btfids \ 162 $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR)) 163$(MAKE_DIRS): 164 $(call msg,MKDIR,,$@) 165 $(Q)mkdir -p $@ 166 167$(OUTPUT)/%.o: %.c 168 $(call msg,CC,,$@) 169 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@ 170 171$(OUTPUT)/%:%.c 172 $(call msg,BINARY,,$@) 173 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@ 174 175# LLVM's ld.lld doesn't support all the architectures, so use it only on x86 176ifeq ($(SRCARCH),x86) 177LLD := lld 178else 179LLD := ld 180endif 181 182# Filter out -static for liburandom_read.so and its dependent targets so that static builds 183# do not fail. Static builds leave urandom_read relying on system-wide shared libraries. 184$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c 185 $(call msg,LIB,,$@) 186 $(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) \ 187 $^ $(filter-out -static,$(LDLIBS)) \ 188 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ 189 -fPIC -shared -o $@ 190 191$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so 192 $(call msg,BINARY,,$@) 193 $(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \ 194 -lurandom_read $(filter-out -static,$(LDLIBS)) -L$(OUTPUT) \ 195 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ 196 -Wl,-rpath=. -o $@ 197 198$(OUTPUT)/sign-file: ../../../../scripts/sign-file.c 199 $(call msg,SIGN-FILE,,$@) 200 $(Q)$(CC) $(shell $(HOSTPKG_CONFIG)--cflags libcrypto 2> /dev/null) \ 201 $< -o $@ \ 202 $(shell $(HOSTPKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto) 203 204$(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch]) 205 $(call msg,MOD,,$@) 206 $(Q)$(RM) bpf_testmod/bpf_testmod.ko # force re-compilation 207 $(Q)$(MAKE) $(submake_extras) RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) -C bpf_testmod 208 $(Q)cp bpf_testmod/bpf_testmod.ko $@ 209 210DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool 211ifneq ($(CROSS_COMPILE),) 212CROSS_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool 213TRUNNER_BPFTOOL := $(CROSS_BPFTOOL) 214USE_BOOTSTRAP := "" 215else 216TRUNNER_BPFTOOL := $(DEFAULT_BPFTOOL) 217USE_BOOTSTRAP := "bootstrap/" 218endif 219 220$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT) 221 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \ 222 OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF) \ 223 BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 224 BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf \ 225 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) \ 226 EXTRA_CFLAGS='-g -O0 $(SAN_CFLAGS)' \ 227 EXTRA_LDFLAGS='$(SAN_LDFLAGS)' && \ 228 cp $(RUNQSLOWER_OUTPUT)runqslower $@ 229 230TEST_GEN_PROGS_EXTENDED += $(TRUNNER_BPFTOOL) 231 232$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ) 233 234TESTING_HELPERS := $(OUTPUT)/testing_helpers.o 235CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o 236UNPRIV_HELPERS := $(OUTPUT)/unpriv_helpers.o 237TRACE_HELPERS := $(OUTPUT)/trace_helpers.o 238JSON_WRITER := $(OUTPUT)/json_writer.o 239CAP_HELPERS := $(OUTPUT)/cap_helpers.o 240 241$(OUTPUT)/test_dev_cgroup: $(CGROUP_HELPERS) $(TESTING_HELPERS) 242$(OUTPUT)/test_skb_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) 243$(OUTPUT)/test_sock: $(CGROUP_HELPERS) $(TESTING_HELPERS) 244$(OUTPUT)/test_sock_addr: $(CGROUP_HELPERS) $(TESTING_HELPERS) 245$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS) 246$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS) 247$(OUTPUT)/get_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) 248$(OUTPUT)/test_cgroup_storage: $(CGROUP_HELPERS) $(TESTING_HELPERS) 249$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS) 250$(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TESTING_HELPERS) 251$(OUTPUT)/test_tag: $(TESTING_HELPERS) 252$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS) 253$(OUTPUT)/xdping: $(TESTING_HELPERS) 254$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS) 255$(OUTPUT)/test_maps: $(TESTING_HELPERS) 256$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) $(UNPRIV_HELPERS) 257$(OUTPUT)/xsk.o: $(BPFOBJ) 258 259BPFTOOL ?= $(DEFAULT_BPFTOOL) 260$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 261 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool 262 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 263 ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" \ 264 EXTRA_CFLAGS='-g -O0' \ 265 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 266 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 267 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \ 268 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin 269 270ifneq ($(CROSS_COMPILE),) 271$(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 272 $(BPFOBJ) | $(BUILD_DIR)/bpftool 273 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 274 ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) \ 275 EXTRA_CFLAGS='-g -O0' \ 276 OUTPUT=$(BUILD_DIR)/bpftool/ \ 277 LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/ \ 278 LIBBPF_DESTDIR=$(SCRATCH_DIR)/ \ 279 prefix= DESTDIR=$(SCRATCH_DIR)/ install-bin 280endif 281 282all: docs 283 284docs: 285 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \ 286 -f Makefile.docs \ 287 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 288 289docs-clean: 290 $(Q)$(MAKE) $(submake_extras) \ 291 -f Makefile.docs \ 292 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 293 294$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 295 $(APIDIR)/linux/bpf.h \ 296 | $(BUILD_DIR)/libbpf 297 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \ 298 EXTRA_CFLAGS='-g -O0 $(SAN_CFLAGS)' \ 299 EXTRA_LDFLAGS='$(SAN_LDFLAGS)' \ 300 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers 301 302ifneq ($(BPFOBJ),$(HOST_BPFOBJ)) 303$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 304 $(APIDIR)/linux/bpf.h \ 305 | $(HOST_BUILD_DIR)/libbpf 306 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \ 307 EXTRA_CFLAGS='-g -O0' ARCH= CROSS_COMPILE= \ 308 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 309 CC="$(HOSTCC)" LD="$(HOSTLD)" \ 310 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers 311endif 312 313$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR) 314ifeq ($(VMLINUX_H),) 315 $(call msg,GEN,,$@) 316 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@ 317else 318 $(call msg,CP,,$@) 319 $(Q)cp "$(VMLINUX_H)" $@ 320endif 321 322$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \ 323 $(TOOLSDIR)/bpf/resolve_btfids/main.c \ 324 $(TOOLSDIR)/lib/rbtree.c \ 325 $(TOOLSDIR)/lib/zalloc.c \ 326 $(TOOLSDIR)/lib/string.c \ 327 $(TOOLSDIR)/lib/ctype.c \ 328 $(TOOLSDIR)/lib/str_error_r.c 329 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \ 330 CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \ 331 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \ 332 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ) 333 334# Get Clang's default includes on this system, as opposed to those seen by 335# '-target bpf'. This fixes "missing" files on some architectures/distros, 336# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 337# 338# Use '-idirafter': Don't interfere with include mechanics except where the 339# build would have failed anyways. 340define get_sys_includes 341$(shell $(1) $(2) -v -E - </dev/null 2>&1 \ 342 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \ 343$(shell $(1) $(2) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') \ 344$(shell $(1) $(2) -dM -E - </dev/null | grep '__loongarch_grlen ' | awk '{printf("-D__BITS_PER_LONG=%d", $$3)}') 345endef 346 347# Determine target endianness. 348IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \ 349 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__') 350MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian) 351 352ifneq ($(CROSS_COMPILE),) 353CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_COMPILE:%-=%)) 354endif 355 356CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARCH)) 357BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ 358 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \ 359 -I$(abspath $(OUTPUT)/../usr/include) 360 361CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \ 362 -Wno-compare-distinct-pointer-types 363 364$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline 365$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline 366 367$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h 368$(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h 369 370# Build BPF object using Clang 371# $1 - input .c file 372# $2 - output .o file 373# $3 - CFLAGS 374define CLANG_BPF_BUILD_RULE 375 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 376 $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v3 -o $2 377endef 378# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32 379define CLANG_NOALU32_BPF_BUILD_RULE 380 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 381 $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v2 -o $2 382endef 383# Build BPF object using GCC 384define GCC_BPF_BUILD_RULE 385 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2) 386 $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2 387endef 388 389SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c 390 391LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \ 392 linked_vars.skel.h linked_maps.skel.h \ 393 test_subskeleton.skel.h test_subskeleton_lib.skel.h \ 394 test_usdt.skel.h 395 396LSKELS := fentry_test.c fexit_test.c fexit_sleep.c atomics.c \ 397 trace_printk.c trace_vprintk.c map_ptr_kern.c \ 398 core_kern.c core_kern_overflow.c test_ringbuf.c \ 399 test_ringbuf_map_key.c 400 401# Generate both light skeleton and libbpf skeleton for these 402LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test.c \ 403 kfunc_call_test_subprog.c 404SKEL_BLACKLIST += $$(LSKELS) 405 406test_static_linked.skel.h-deps := test_static_linked1.bpf.o test_static_linked2.bpf.o 407linked_funcs.skel.h-deps := linked_funcs1.bpf.o linked_funcs2.bpf.o 408linked_vars.skel.h-deps := linked_vars1.bpf.o linked_vars2.bpf.o 409linked_maps.skel.h-deps := linked_maps1.bpf.o linked_maps2.bpf.o 410# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file 411# but that's created as a side-effect of the skel.h generation. 412test_subskeleton.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o test_subskeleton.bpf.o 413test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o 414test_usdt.skel.h-deps := test_usdt.bpf.o test_usdt_multispec.bpf.o 415xsk_xdp_progs.skel.h-deps := xsk_xdp_progs.bpf.o 416xdp_hw_metadata.skel.h-deps := xdp_hw_metadata.bpf.o 417xdp_features.skel.h-deps := xdp_features.bpf.o 418 419LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps))) 420 421# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on 422# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES. 423# Parameters: 424# $1 - test runner base binary name (e.g., test_progs) 425# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc) 426define DEFINE_TEST_RUNNER 427 428TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2 429TRUNNER_BINARY := $1$(if $2,-)$2 430TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \ 431 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c))) 432TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \ 433 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES))) 434TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES)) 435TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h 436TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c)) 437TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.bpf.o, $$(TRUNNER_BPF_SRCS)) 438TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \ 439 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\ 440 $$(TRUNNER_BPF_SRCS))) 441TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA)) 442TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS)) 443TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS) 444 445# Evaluate rules now with extra TRUNNER_XXX variables above already defined 446$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2)) 447 448endef 449 450# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and 451# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with: 452# $1 - test runner base binary name (e.g., test_progs) 453# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc) 454define DEFINE_TEST_RUNNER_RULES 455 456ifeq ($($(TRUNNER_OUTPUT)-dir),) 457$(TRUNNER_OUTPUT)-dir := y 458$(TRUNNER_OUTPUT): 459 $$(call msg,MKDIR,,$$@) 460 $(Q)mkdir -p $$@ 461endif 462 463# ensure we set up BPF objects generation rule just once for a given 464# input/output directory combination 465ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),) 466$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y 467$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o: \ 468 $(TRUNNER_BPF_PROGS_DIR)/%.c \ 469 $(TRUNNER_BPF_PROGS_DIR)/*.h \ 470 $$(INCLUDE_DIR)/vmlinux.h \ 471 $(wildcard $(BPFDIR)/bpf_*.h) \ 472 $(wildcard $(BPFDIR)/*.bpf.h) \ 473 | $(TRUNNER_OUTPUT) $$(BPFOBJ) 474 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \ 475 $(TRUNNER_BPF_CFLAGS)) 476 477$(TRUNNER_BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 478 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 479 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$< 480 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o) 481 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o) 482 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o) 483 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$@ 484 $(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$(@:.skel.h=.subskel.h) 485 486$(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 487 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 488 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$< 489 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o) 490 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o) 491 $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o) 492 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@ 493 494$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_BPF_OBJS) $(BPFTOOL) | $(TRUNNER_OUTPUT) 495 $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.bpf.o)) 496 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps)) 497 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o) 498 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o) 499 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o) 500 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 501 $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@ 502 $(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h) 503endif 504 505# ensure we set up tests.h header generation rule just once 506ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),) 507$(TRUNNER_TESTS_DIR)-tests-hdr := y 508$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c 509 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@) 510 $$(shell (echo '/* Generated header, do not edit */'; \ 511 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \ 512 $(TRUNNER_TESTS_DIR)/*.c | sort ; \ 513 ) > $$@) 514endif 515 516# compile individual test files 517# Note: we cd into output directory to ensure embedded BPF object is found 518$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \ 519 $(TRUNNER_TESTS_DIR)/%.c \ 520 $(TRUNNER_EXTRA_HDRS) \ 521 $(TRUNNER_BPF_OBJS) \ 522 $(TRUNNER_BPF_SKELS) \ 523 $(TRUNNER_BPF_LSKELS) \ 524 $(TRUNNER_BPF_SKELS_LINKED) \ 525 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 526 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@) 527 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F) 528 529$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \ 530 %.c \ 531 $(TRUNNER_EXTRA_HDRS) \ 532 $(TRUNNER_TESTS_HDR) \ 533 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 534 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@) 535 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@ 536 537# non-flavored in-srctree builds receive special treatment, in particular, we 538# do not need to copy extra resources (see e.g. test_btf_dump_case()) 539$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT) 540ifneq ($2:$(OUTPUT),:$(shell pwd)) 541 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES)) 542 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/ 543endif 544 545$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \ 546 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \ 547 $(RESOLVE_BTFIDS) \ 548 $(TRUNNER_BPFTOOL) \ 549 | $(TRUNNER_BINARY)-extras 550 $$(call msg,BINARY,,$$@) 551 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@ 552 $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.bpf.o $$@ 553 $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/$(USE_BOOTSTRAP)bpftool \ 554 $(OUTPUT)/$(if $2,$2/)bpftool 555 556endef 557 558# Define test_progs test runner. 559TRUNNER_TESTS_DIR := prog_tests 560TRUNNER_BPF_PROGS_DIR := progs 561TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c \ 562 network_helpers.c testing_helpers.c \ 563 btf_helpers.c flow_dissector_load.h \ 564 cap_helpers.c test_loader.c xsk.c disasm.c \ 565 json_writer.c unpriv_helpers.c 566 567TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \ 568 $(OUTPUT)/liburandom_read.so \ 569 $(OUTPUT)/xdp_synproxy \ 570 $(OUTPUT)/sign-file \ 571 ima_setup.sh \ 572 verify_sig_setup.sh \ 573 $(wildcard progs/btf_dump_test_case_*.c) \ 574 $(wildcard progs/*.bpf.o) 575TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE 576TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS 577$(eval $(call DEFINE_TEST_RUNNER,test_progs)) 578 579# Define test_progs-no_alu32 test runner. 580TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE 581TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) 582$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32)) 583 584# Define test_progs BPF-GCC-flavored test runner. 585ifneq ($(BPF_GCC),) 586TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE 587TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc,) 588$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc)) 589endif 590 591# Define test_maps test runner. 592TRUNNER_TESTS_DIR := map_tests 593TRUNNER_BPF_PROGS_DIR := progs 594TRUNNER_EXTRA_SOURCES := test_maps.c 595TRUNNER_EXTRA_FILES := 596TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built) 597TRUNNER_BPF_CFLAGS := 598$(eval $(call DEFINE_TEST_RUNNER,test_maps)) 599 600# Define test_verifier test runner. 601# It is much simpler than test_maps/test_progs and sufficiently different from 602# them (e.g., test.h is using completely pattern), that it's worth just 603# explicitly defining all the rules explicitly. 604verifier/tests.h: verifier/*.c 605 $(shell ( cd verifier/; \ 606 echo '/* Generated header, do not edit */'; \ 607 echo '#ifdef FILL_ARRAY'; \ 608 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \ 609 echo '#endif' \ 610 ) > verifier/tests.h) 611$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT) 612 $(call msg,BINARY,,$@) 613 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 614 615$(OUTPUT)/xskxceiver: xskxceiver.c xskxceiver.h $(OUTPUT)/xsk.o $(OUTPUT)/xsk_xdp_progs.skel.h $(BPFOBJ) | $(OUTPUT) 616 $(call msg,BINARY,,$@) 617 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 618 619$(OUTPUT)/xdp_hw_metadata: xdp_hw_metadata.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xdp_hw_metadata.skel.h | $(OUTPUT) 620 $(call msg,BINARY,,$@) 621 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 622 623$(OUTPUT)/xdp_features: xdp_features.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xdp_features.skel.h | $(OUTPUT) 624 $(call msg,BINARY,,$@) 625 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 626 627# Make sure we are able to include and link libbpf against c++. 628$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ) 629 $(call msg,CXX,,$@) 630 $(Q)$(CXX) $(CFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@ 631 632# Benchmark runner 633$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ) 634 $(call msg,CC,,$@) 635 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@ 636$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h 637$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h 638$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \ 639 $(OUTPUT)/perfbuf_bench.skel.h 640$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h 641$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h 642$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h 643$(OUTPUT)/bench_bpf_hashmap_full_update.o: $(OUTPUT)/bpf_hashmap_full_update_bench.skel.h 644$(OUTPUT)/bench_local_storage.o: $(OUTPUT)/local_storage_bench.skel.h 645$(OUTPUT)/bench_local_storage_rcu_tasks_trace.o: $(OUTPUT)/local_storage_rcu_tasks_trace_bench.skel.h 646$(OUTPUT)/bench_local_storage_create.o: $(OUTPUT)/bench_local_storage_create.skel.h 647$(OUTPUT)/bench_bpf_hashmap_lookup.o: $(OUTPUT)/bpf_hashmap_lookup.skel.h 648$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ) 649$(OUTPUT)/bench: LDLIBS += -lm 650$(OUTPUT)/bench: $(OUTPUT)/bench.o \ 651 $(TESTING_HELPERS) \ 652 $(TRACE_HELPERS) \ 653 $(OUTPUT)/bench_count.o \ 654 $(OUTPUT)/bench_rename.o \ 655 $(OUTPUT)/bench_trigger.o \ 656 $(OUTPUT)/bench_ringbufs.o \ 657 $(OUTPUT)/bench_bloom_filter_map.o \ 658 $(OUTPUT)/bench_bpf_loop.o \ 659 $(OUTPUT)/bench_strncmp.o \ 660 $(OUTPUT)/bench_bpf_hashmap_full_update.o \ 661 $(OUTPUT)/bench_local_storage.o \ 662 $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o \ 663 $(OUTPUT)/bench_bpf_hashmap_lookup.o \ 664 $(OUTPUT)/bench_local_storage_create.o \ 665 # 666 $(call msg,BINARY,,$@) 667 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ 668 669$(OUTPUT)/veristat.o: $(BPFOBJ) 670$(OUTPUT)/veristat: $(OUTPUT)/veristat.o 671 $(call msg,BINARY,,$@) 672 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ 673 674EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \ 675 prog_tests/tests.h map_tests/tests.h verifier/tests.h \ 676 feature bpftool \ 677 $(addprefix $(OUTPUT)/,*.o *.skel.h *.lskel.h *.subskel.h \ 678 no_alu32 bpf_gcc bpf_testmod.ko \ 679 liburandom_read.so) 680 681.PHONY: docs docs-clean 682 683# Delete partially updated (corrupted) files on error 684.DELETE_ON_ERROR: 685