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