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