1# SPDX-License-Identifier: GPL-2.0 2include ../../../build/Build.include 3include ../../../scripts/Makefile.arch 4include ../../../scripts/Makefile.include 5 6CXX ?= $(CROSS_COMPILE)g++ 7 8CURDIR := $(abspath .) 9TOOLSDIR := $(abspath ../../..) 10LIBDIR := $(TOOLSDIR)/lib 11BPFDIR := $(LIBDIR)/bpf 12TOOLSINCDIR := $(TOOLSDIR)/include 13BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool 14APIDIR := $(TOOLSINCDIR)/uapi 15ifneq ($(O),) 16GENDIR := $(O)/include/generated 17else 18GENDIR := $(abspath ../../../../include/generated) 19endif 20GENHDR := $(GENDIR)/autoconf.h 21HOSTPKG_CONFIG := pkg-config 22 23ifneq ($(wildcard $(GENHDR)),) 24 GENFLAGS := -DHAVE_GENHDR 25endif 26 27BPF_GCC ?= $(shell command -v bpf-gcc;) 28SAN_CFLAGS ?= 29SAN_LDFLAGS ?= $(SAN_CFLAGS) 30CFLAGS += -g -O0 -rdynamic -Wall -Werror $(GENFLAGS) $(SAN_CFLAGS) \ 31 -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \ 32 -I$(TOOLSINCDIR) -I$(APIDIR) -I$(OUTPUT) 33LDFLAGS += $(SAN_LDFLAGS) 34LDLIBS += -lelf -lz -lrt -lpthread 35 36ifneq ($(LLVM),) 37# Silence some warnings when compiled with clang 38CFLAGS += -Wno-unused-command-line-argument 39endif 40 41# Check whether bpf cpu=v4 is supported or not by clang 42ifneq ($(shell $(CLANG) --target=bpf -mcpu=help 2>&1 | grep 'v4'),) 43CLANG_CPUV4 := 1 44endif 45 46# Order correspond to 'make run_tests' order 47TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \ 48 test_dev_cgroup \ 49 test_sock test_sockmap get_cgroup_id_user \ 50 test_cgroup_storage \ 51 test_tcpnotify_user test_sysctl \ 52 test_progs-no_alu32 53TEST_INST_SUBDIRS := no_alu32 54 55# Also test bpf-gcc, if present 56ifneq ($(BPF_GCC),) 57TEST_GEN_PROGS += test_progs-bpf_gcc 58TEST_INST_SUBDIRS += bpf_gcc 59endif 60 61ifneq ($(CLANG_CPUV4),) 62TEST_GEN_PROGS += test_progs-cpuv4 63TEST_INST_SUBDIRS += cpuv4 64endif 65 66TEST_GEN_FILES = test_lwt_ip_encap.bpf.o test_tc_edt.bpf.o 67TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c) 68 69# Order correspond to 'make run_tests' order 70TEST_PROGS := test_kmod.sh \ 71 test_xdp_redirect.sh \ 72 test_xdp_redirect_multi.sh \ 73 test_xdp_meta.sh \ 74 test_xdp_veth.sh \ 75 test_offload.py \ 76 test_sock_addr.sh \ 77 test_tunnel.sh \ 78 test_lwt_seg6local.sh \ 79 test_lirc_mode2.sh \ 80 test_skb_cgroup_id.sh \ 81 test_flow_dissector.sh \ 82 test_xdp_vlan_mode_generic.sh \ 83 test_xdp_vlan_mode_native.sh \ 84 test_lwt_ip_encap.sh \ 85 test_tcp_check_syncookie.sh \ 86 test_tc_tunnel.sh \ 87 test_tc_edt.sh \ 88 test_xdping.sh \ 89 test_bpftool_build.sh \ 90 test_bpftool.sh \ 91 test_bpftool_metadata.sh \ 92 test_doc_build.sh \ 93 test_xsk.sh \ 94 test_xdp_features.sh 95 96TEST_PROGS_EXTENDED := with_addr.sh \ 97 with_tunnels.sh ima_setup.sh verify_sig_setup.sh \ 98 test_xdp_vlan.sh test_bpftool.py 99 100# Compile but not part of 'make run_tests' 101TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \ 102 flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \ 103 test_lirc_mode2_user xdping test_cpp runqslower bench bpf_testmod.ko \ 104 xskxceiver xdp_redirect_multi xdp_synproxy veristat xdp_hw_metadata \ 105 xdp_features 106 107TEST_GEN_FILES += liburandom_read.so urandom_read sign-file 108 109# Emit succinct information message describing current building step 110# $1 - generic step name (e.g., CC, LINK, etc); 111# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor]; 112# $3 - target (assumed to be file); only file name will be emitted; 113# $4 - optional extra arg, emitted as-is, if provided. 114ifeq ($(V),1) 115Q = 116msg = 117else 118Q = @ 119msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))"; 120MAKEFLAGS += --no-print-directory 121submake_extras := feature_display=0 122endif 123 124# override lib.mk's default rules 125OVERRIDE_TARGETS := 1 126override define CLEAN 127 $(call msg,CLEAN) 128 $(Q)$(RM) -r $(TEST_GEN_PROGS) 129 $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED) 130 $(Q)$(RM) -r $(TEST_GEN_FILES) 131 $(Q)$(RM) -r $(EXTRA_CLEAN) 132 $(Q)$(MAKE) -C bpf_testmod clean 133 $(Q)$(MAKE) docs-clean 134endef 135 136include ../lib.mk 137 138SCRATCH_DIR := $(OUTPUT)/tools 139BUILD_DIR := $(SCRATCH_DIR)/build 140INCLUDE_DIR := $(SCRATCH_DIR)/include 141BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a 142ifneq ($(CROSS_COMPILE),) 143HOST_BUILD_DIR := $(BUILD_DIR)/host 144HOST_SCRATCH_DIR := $(OUTPUT)/host-tools 145HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include 146else 147HOST_BUILD_DIR := $(BUILD_DIR) 148HOST_SCRATCH_DIR := $(SCRATCH_DIR) 149HOST_INCLUDE_DIR := $(INCLUDE_DIR) 150endif 151HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a 152RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids 153RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/ 154 155VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \ 156 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \ 157 ../../../../vmlinux \ 158 /sys/kernel/btf/vmlinux \ 159 /boot/vmlinux-$(shell uname -r) 160VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) 161ifeq ($(VMLINUX_BTF),) 162$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)") 163endif 164 165# Define simple and short `make test_progs`, `make test_sysctl`, etc targets 166# to build individual tests. 167# NOTE: Semicolon at the end is critical to override lib.mk's default static 168# rule for binaries. 169$(notdir $(TEST_GEN_PROGS) \ 170 $(TEST_GEN_PROGS_EXTENDED) \ 171 $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ; 172 173# sort removes libbpf duplicates when not cross-building 174MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \ 175 $(BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/bpftool \ 176 $(HOST_BUILD_DIR)/resolve_btfids \ 177 $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR)) 178$(MAKE_DIRS): 179 $(call msg,MKDIR,,$@) 180 $(Q)mkdir -p $@ 181 182$(OUTPUT)/%.o: %.c 183 $(call msg,CC,,$@) 184 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@ 185 186$(OUTPUT)/%:%.c 187 $(call msg,BINARY,,$@) 188 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@ 189 190# LLVM's ld.lld doesn't support all the architectures, so use it only on x86 191ifeq ($(SRCARCH),x86) 192LLD := lld 193else 194LLD := ld 195endif 196 197# Filter out -static for liburandom_read.so and its dependent targets so that static builds 198# do not fail. Static builds leave urandom_read relying on system-wide shared libraries. 199$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c 200 $(call msg,LIB,,$@) 201 $(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) \ 202 $^ $(filter-out -static,$(LDLIBS)) \ 203 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ 204 -fPIC -shared -o $@ 205 206$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so 207 $(call msg,BINARY,,$@) 208 $(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \ 209 -lurandom_read $(filter-out -static,$(LDLIBS)) -L$(OUTPUT) \ 210 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ 211 -Wl,-rpath=. -o $@ 212 213$(OUTPUT)/sign-file: ../../../../scripts/sign-file.c 214 $(call msg,SIGN-FILE,,$@) 215 $(Q)$(CC) $(shell $(HOSTPKG_CONFIG) --cflags libcrypto 2> /dev/null) \ 216 $< -o $@ \ 217 $(shell $(HOSTPKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto) 218 219$(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch]) 220 $(call msg,MOD,,$@) 221 $(Q)$(RM) bpf_testmod/bpf_testmod.ko # force re-compilation 222 $(Q)$(MAKE) $(submake_extras) RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) -C bpf_testmod 223 $(Q)cp bpf_testmod/bpf_testmod.ko $@ 224 225DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool 226ifneq ($(CROSS_COMPILE),) 227CROSS_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool 228TRUNNER_BPFTOOL := $(CROSS_BPFTOOL) 229USE_BOOTSTRAP := "" 230else 231TRUNNER_BPFTOOL := $(DEFAULT_BPFTOOL) 232USE_BOOTSTRAP := "bootstrap/" 233endif 234 235$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT) 236 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \ 237 OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF) \ 238 BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 239 BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf \ 240 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) \ 241 EXTRA_CFLAGS='-g -O0 $(SAN_CFLAGS)' \ 242 EXTRA_LDFLAGS='$(SAN_LDFLAGS)' && \ 243 cp $(RUNQSLOWER_OUTPUT)runqslower $@ 244 245TEST_GEN_PROGS_EXTENDED += $(TRUNNER_BPFTOOL) 246 247$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ) 248 249TESTING_HELPERS := $(OUTPUT)/testing_helpers.o 250CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o 251UNPRIV_HELPERS := $(OUTPUT)/unpriv_helpers.o 252TRACE_HELPERS := $(OUTPUT)/trace_helpers.o 253JSON_WRITER := $(OUTPUT)/json_writer.o 254CAP_HELPERS := $(OUTPUT)/cap_helpers.o 255 256$(OUTPUT)/test_dev_cgroup: $(CGROUP_HELPERS) $(TESTING_HELPERS) 257$(OUTPUT)/test_skb_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) 258$(OUTPUT)/test_sock: $(CGROUP_HELPERS) $(TESTING_HELPERS) 259$(OUTPUT)/test_sock_addr: $(CGROUP_HELPERS) $(TESTING_HELPERS) 260$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS) 261$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS) 262$(OUTPUT)/get_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) 263$(OUTPUT)/test_cgroup_storage: $(CGROUP_HELPERS) $(TESTING_HELPERS) 264$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS) 265$(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TESTING_HELPERS) 266$(OUTPUT)/test_tag: $(TESTING_HELPERS) 267$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS) 268$(OUTPUT)/xdping: $(TESTING_HELPERS) 269$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS) 270$(OUTPUT)/test_maps: $(TESTING_HELPERS) 271$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) $(UNPRIV_HELPERS) 272$(OUTPUT)/xsk.o: $(BPFOBJ) 273 274BPFTOOL ?= $(DEFAULT_BPFTOOL) 275$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 276 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool 277 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 278 ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" \ 279 EXTRA_CFLAGS='-g -O0' \ 280 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 281 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 282 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \ 283 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin 284 285ifneq ($(CROSS_COMPILE),) 286$(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 287 $(BPFOBJ) | $(BUILD_DIR)/bpftool 288 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 289 ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) \ 290 EXTRA_CFLAGS='-g -O0' \ 291 OUTPUT=$(BUILD_DIR)/bpftool/ \ 292 LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/ \ 293 LIBBPF_DESTDIR=$(SCRATCH_DIR)/ \ 294 prefix= DESTDIR=$(SCRATCH_DIR)/ install-bin 295endif 296 297all: docs 298 299docs: 300 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \ 301 -f Makefile.docs \ 302 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 303 304docs-clean: 305 $(Q)$(MAKE) $(submake_extras) \ 306 -f Makefile.docs \ 307 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 308 309$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 310 $(APIDIR)/linux/bpf.h \ 311 | $(BUILD_DIR)/libbpf 312 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \ 313 EXTRA_CFLAGS='-g -O0 $(SAN_CFLAGS)' \ 314 EXTRA_LDFLAGS='$(SAN_LDFLAGS)' \ 315 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers 316 317ifneq ($(BPFOBJ),$(HOST_BPFOBJ)) 318$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 319 $(APIDIR)/linux/bpf.h \ 320 | $(HOST_BUILD_DIR)/libbpf 321 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \ 322 EXTRA_CFLAGS='-g -O0' ARCH= CROSS_COMPILE= \ 323 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 324 CC="$(HOSTCC)" LD="$(HOSTLD)" \ 325 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers 326endif 327 328$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR) 329ifeq ($(VMLINUX_H),) 330 $(call msg,GEN,,$@) 331 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@ 332else 333 $(call msg,CP,,$@) 334 $(Q)cp "$(VMLINUX_H)" $@ 335endif 336 337$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \ 338 $(TOOLSDIR)/bpf/resolve_btfids/main.c \ 339 $(TOOLSDIR)/lib/rbtree.c \ 340 $(TOOLSDIR)/lib/zalloc.c \ 341 $(TOOLSDIR)/lib/string.c \ 342 $(TOOLSDIR)/lib/ctype.c \ 343 $(TOOLSDIR)/lib/str_error_r.c 344 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \ 345 CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \ 346 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \ 347 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ) 348 349# Get Clang's default includes on this system, as opposed to those seen by 350# '--target=bpf'. This fixes "missing" files on some architectures/distros, 351# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 352# 353# Use '-idirafter': Don't interfere with include mechanics except where the 354# build would have failed anyways. 355define get_sys_includes 356$(shell $(1) $(2) -v -E - </dev/null 2>&1 \ 357 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \ 358$(shell $(1) $(2) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') \ 359$(shell $(1) $(2) -dM -E - </dev/null | grep '__loongarch_grlen ' | awk '{printf("-D__BITS_PER_LONG=%d", $$3)}') 360endef 361 362# Determine target endianness. 363IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \ 364 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__') 365MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian) 366 367ifneq ($(CROSS_COMPILE),) 368CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_COMPILE:%-=%)) 369endif 370 371CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARCH)) 372BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ 373 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \ 374 -I$(abspath $(OUTPUT)/../usr/include) 375 376CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \ 377 -Wno-compare-distinct-pointer-types 378 379$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline 380$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline 381 382$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h 383$(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h 384 385# Build BPF object using Clang 386# $1 - input .c file 387# $2 - output .o file 388# $3 - CFLAGS 389define CLANG_BPF_BUILD_RULE 390 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 391 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v3 -o $2 392endef 393# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32 394define CLANG_NOALU32_BPF_BUILD_RULE 395 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 396 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v2 -o $2 397endef 398# Similar to CLANG_BPF_BUILD_RULE, but with cpu-v4 399define CLANG_CPUV4_BPF_BUILD_RULE 400 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 401 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v4 -o $2 402endef 403# Build BPF object using GCC 404define GCC_BPF_BUILD_RULE 405 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2) 406 $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2 407endef 408 409SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c 410 411LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \ 412 linked_vars.skel.h linked_maps.skel.h \ 413 test_subskeleton.skel.h test_subskeleton_lib.skel.h \ 414 test_usdt.skel.h 415 416LSKELS := fentry_test.c fexit_test.c fexit_sleep.c atomics.c \ 417 trace_printk.c trace_vprintk.c map_ptr_kern.c \ 418 core_kern.c core_kern_overflow.c test_ringbuf.c \ 419 test_ringbuf_map_key.c 420 421# Generate both light skeleton and libbpf skeleton for these 422LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test.c \ 423 kfunc_call_test_subprog.c 424SKEL_BLACKLIST += $$(LSKELS) 425 426test_static_linked.skel.h-deps := test_static_linked1.bpf.o test_static_linked2.bpf.o 427linked_funcs.skel.h-deps := linked_funcs1.bpf.o linked_funcs2.bpf.o 428linked_vars.skel.h-deps := linked_vars1.bpf.o linked_vars2.bpf.o 429linked_maps.skel.h-deps := linked_maps1.bpf.o linked_maps2.bpf.o 430# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file 431# but that's created as a side-effect of the skel.h generation. 432test_subskeleton.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o test_subskeleton.bpf.o 433test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o 434test_usdt.skel.h-deps := test_usdt.bpf.o test_usdt_multispec.bpf.o 435xsk_xdp_progs.skel.h-deps := xsk_xdp_progs.bpf.o 436xdp_hw_metadata.skel.h-deps := xdp_hw_metadata.bpf.o 437xdp_features.skel.h-deps := xdp_features.bpf.o 438 439LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps))) 440 441# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on 442# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES. 443# Parameters: 444# $1 - test runner base binary name (e.g., test_progs) 445# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, gcc-bpf, etc) 446define DEFINE_TEST_RUNNER 447 448TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2 449TRUNNER_BINARY := $1$(if $2,-)$2 450TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \ 451 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c))) 452TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \ 453 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES))) 454TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES)) 455TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h 456TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c)) 457TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.bpf.o, $$(TRUNNER_BPF_SRCS)) 458TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \ 459 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\ 460 $$(TRUNNER_BPF_SRCS))) 461TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA)) 462TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS)) 463TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS) 464 465# Evaluate rules now with extra TRUNNER_XXX variables above already defined 466$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2)) 467 468endef 469 470# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and 471# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with: 472# $1 - test runner base binary name (e.g., test_progs) 473# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, gcc-bpf, etc) 474define DEFINE_TEST_RUNNER_RULES 475 476ifeq ($($(TRUNNER_OUTPUT)-dir),) 477$(TRUNNER_OUTPUT)-dir := y 478$(TRUNNER_OUTPUT): 479 $$(call msg,MKDIR,,$$@) 480 $(Q)mkdir -p $$@ 481endif 482 483# ensure we set up BPF objects generation rule just once for a given 484# input/output directory combination 485ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),) 486$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y 487$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o: \ 488 $(TRUNNER_BPF_PROGS_DIR)/%.c \ 489 $(TRUNNER_BPF_PROGS_DIR)/*.h \ 490 $$(INCLUDE_DIR)/vmlinux.h \ 491 $(wildcard $(BPFDIR)/bpf_*.h) \ 492 $(wildcard $(BPFDIR)/*.bpf.h) \ 493 | $(TRUNNER_OUTPUT) $$(BPFOBJ) 494 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \ 495 $(TRUNNER_BPF_CFLAGS)) 496 497$(TRUNNER_BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 498 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 499 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$< 500 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o) 501 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o) 502 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o) 503 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$@ 504 $(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$(@:.skel.h=.subskel.h) 505 506$(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 507 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 508 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$< 509 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o) 510 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o) 511 $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o) 512 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@ 513 514$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_BPF_OBJS) $(BPFTOOL) | $(TRUNNER_OUTPUT) 515 $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.bpf.o)) 516 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps)) 517 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o) 518 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o) 519 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o) 520 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 521 $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@ 522 $(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h) 523endif 524 525# ensure we set up tests.h header generation rule just once 526ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),) 527$(TRUNNER_TESTS_DIR)-tests-hdr := y 528$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c 529 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@) 530 $$(shell (echo '/* Generated header, do not edit */'; \ 531 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \ 532 $(TRUNNER_TESTS_DIR)/*.c | sort ; \ 533 ) > $$@) 534endif 535 536# compile individual test files 537# Note: we cd into output directory to ensure embedded BPF object is found 538$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \ 539 $(TRUNNER_TESTS_DIR)/%.c \ 540 $(TRUNNER_EXTRA_HDRS) \ 541 $(TRUNNER_BPF_OBJS) \ 542 $(TRUNNER_BPF_SKELS) \ 543 $(TRUNNER_BPF_LSKELS) \ 544 $(TRUNNER_BPF_SKELS_LINKED) \ 545 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 546 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@) 547 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F) 548 549$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \ 550 %.c \ 551 $(TRUNNER_EXTRA_HDRS) \ 552 $(TRUNNER_TESTS_HDR) \ 553 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 554 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@) 555 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@ 556 557# non-flavored in-srctree builds receive special treatment, in particular, we 558# do not need to copy extra resources (see e.g. test_btf_dump_case()) 559$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT) 560ifneq ($2:$(OUTPUT),:$(shell pwd)) 561 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES)) 562 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/ 563endif 564 565$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \ 566 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \ 567 $(RESOLVE_BTFIDS) \ 568 $(TRUNNER_BPFTOOL) \ 569 | $(TRUNNER_BINARY)-extras 570 $$(call msg,BINARY,,$$@) 571 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@ 572 $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.bpf.o $$@ 573 $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/$(USE_BOOTSTRAP)bpftool \ 574 $(OUTPUT)/$(if $2,$2/)bpftool 575 576endef 577 578# Define test_progs test runner. 579TRUNNER_TESTS_DIR := prog_tests 580TRUNNER_BPF_PROGS_DIR := progs 581TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c \ 582 network_helpers.c testing_helpers.c \ 583 btf_helpers.c flow_dissector_load.h \ 584 cap_helpers.c test_loader.c xsk.c disasm.c \ 585 json_writer.c unpriv_helpers.c \ 586 ip_check_defrag_frags.h 587TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \ 588 $(OUTPUT)/liburandom_read.so \ 589 $(OUTPUT)/xdp_synproxy \ 590 $(OUTPUT)/sign-file \ 591 $(OUTPUT)/uprobe_multi \ 592 ima_setup.sh \ 593 verify_sig_setup.sh \ 594 $(wildcard progs/btf_dump_test_case_*.c) \ 595 $(wildcard progs/*.bpf.o) 596TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE 597TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS 598$(eval $(call DEFINE_TEST_RUNNER,test_progs)) 599 600# Define test_progs-no_alu32 test runner. 601TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE 602TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) 603$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32)) 604 605# Define test_progs-cpuv4 test runner. 606ifneq ($(CLANG_CPUV4),) 607TRUNNER_BPF_BUILD_RULE := CLANG_CPUV4_BPF_BUILD_RULE 608TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) 609$(eval $(call DEFINE_TEST_RUNNER,test_progs,cpuv4)) 610endif 611 612# Define test_progs BPF-GCC-flavored test runner. 613ifneq ($(BPF_GCC),) 614TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE 615TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc,) 616$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc)) 617endif 618 619# Define test_maps test runner. 620TRUNNER_TESTS_DIR := map_tests 621TRUNNER_BPF_PROGS_DIR := progs 622TRUNNER_EXTRA_SOURCES := test_maps.c 623TRUNNER_EXTRA_FILES := 624TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built) 625TRUNNER_BPF_CFLAGS := 626$(eval $(call DEFINE_TEST_RUNNER,test_maps)) 627 628# Define test_verifier test runner. 629# It is much simpler than test_maps/test_progs and sufficiently different from 630# them (e.g., test.h is using completely pattern), that it's worth just 631# explicitly defining all the rules explicitly. 632verifier/tests.h: verifier/*.c 633 $(shell ( cd verifier/; \ 634 echo '/* Generated header, do not edit */'; \ 635 echo '#ifdef FILL_ARRAY'; \ 636 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \ 637 echo '#endif' \ 638 ) > verifier/tests.h) 639$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT) 640 $(call msg,BINARY,,$@) 641 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 642 643$(OUTPUT)/xskxceiver: xskxceiver.c xskxceiver.h $(OUTPUT)/xsk.o $(OUTPUT)/xsk_xdp_progs.skel.h $(BPFOBJ) | $(OUTPUT) 644 $(call msg,BINARY,,$@) 645 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 646 647$(OUTPUT)/xdp_hw_metadata: xdp_hw_metadata.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xdp_hw_metadata.skel.h | $(OUTPUT) 648 $(call msg,BINARY,,$@) 649 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 650 651$(OUTPUT)/xdp_features: xdp_features.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xdp_features.skel.h | $(OUTPUT) 652 $(call msg,BINARY,,$@) 653 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 654 655# Make sure we are able to include and link libbpf against c++. 656$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ) 657 $(call msg,CXX,,$@) 658 $(Q)$(CXX) $(CFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@ 659 660# Benchmark runner 661$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ) 662 $(call msg,CC,,$@) 663 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@ 664$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h 665$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h 666$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \ 667 $(OUTPUT)/perfbuf_bench.skel.h 668$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h 669$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h 670$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h 671$(OUTPUT)/bench_bpf_hashmap_full_update.o: $(OUTPUT)/bpf_hashmap_full_update_bench.skel.h 672$(OUTPUT)/bench_local_storage.o: $(OUTPUT)/local_storage_bench.skel.h 673$(OUTPUT)/bench_local_storage_rcu_tasks_trace.o: $(OUTPUT)/local_storage_rcu_tasks_trace_bench.skel.h 674$(OUTPUT)/bench_local_storage_create.o: $(OUTPUT)/bench_local_storage_create.skel.h 675$(OUTPUT)/bench_bpf_hashmap_lookup.o: $(OUTPUT)/bpf_hashmap_lookup.skel.h 676$(OUTPUT)/bench_htab_mem.o: $(OUTPUT)/htab_mem_bench.skel.h 677$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ) 678$(OUTPUT)/bench: LDLIBS += -lm 679$(OUTPUT)/bench: $(OUTPUT)/bench.o \ 680 $(TESTING_HELPERS) \ 681 $(TRACE_HELPERS) \ 682 $(CGROUP_HELPERS) \ 683 $(OUTPUT)/bench_count.o \ 684 $(OUTPUT)/bench_rename.o \ 685 $(OUTPUT)/bench_trigger.o \ 686 $(OUTPUT)/bench_ringbufs.o \ 687 $(OUTPUT)/bench_bloom_filter_map.o \ 688 $(OUTPUT)/bench_bpf_loop.o \ 689 $(OUTPUT)/bench_strncmp.o \ 690 $(OUTPUT)/bench_bpf_hashmap_full_update.o \ 691 $(OUTPUT)/bench_local_storage.o \ 692 $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o \ 693 $(OUTPUT)/bench_bpf_hashmap_lookup.o \ 694 $(OUTPUT)/bench_local_storage_create.o \ 695 $(OUTPUT)/bench_htab_mem.o \ 696 # 697 $(call msg,BINARY,,$@) 698 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ 699 700$(OUTPUT)/veristat.o: $(BPFOBJ) 701$(OUTPUT)/veristat: $(OUTPUT)/veristat.o 702 $(call msg,BINARY,,$@) 703 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ 704 705$(OUTPUT)/uprobe_multi: uprobe_multi.c 706 $(call msg,BINARY,,$@) 707 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ 708 709EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \ 710 prog_tests/tests.h map_tests/tests.h verifier/tests.h \ 711 feature bpftool \ 712 $(addprefix $(OUTPUT)/,*.o *.skel.h *.lskel.h *.subskel.h \ 713 no_alu32 cpuv4 bpf_gcc bpf_testmod.ko \ 714 liburandom_read.so) 715 716.PHONY: docs docs-clean 717 718# Delete partially updated (corrupted) files on error 719.DELETE_ON_ERROR: 720 721DEFAULT_INSTALL_RULE := $(INSTALL_RULE) 722override define INSTALL_RULE 723 $(DEFAULT_INSTALL_RULE) 724 @for DIR in $(TEST_INST_SUBDIRS); do \ 725 mkdir -p $(INSTALL_PATH)/$$DIR; \ 726 rsync -a $(OUTPUT)/$$DIR/*.bpf.o $(INSTALL_PATH)/$$DIR;\ 727 done 728endef 729