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 21PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config 22 23ifneq ($(wildcard $(GENHDR)),) 24 GENFLAGS := -DHAVE_GENHDR 25endif 26 27BPF_GCC ?= $(shell command -v bpf-gcc;) 28SAN_CFLAGS ?= 29SAN_LDFLAGS ?= $(SAN_CFLAGS) 30RELEASE ?= 31OPT_FLAGS ?= $(if $(RELEASE),-O2,-O0) 32 33LIBELF_CFLAGS := $(shell $(PKG_CONFIG) libelf --cflags 2>/dev/null) 34LIBELF_LIBS := $(shell $(PKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf) 35 36CFLAGS += -g $(OPT_FLAGS) -rdynamic \ 37 -Wall -Werror \ 38 $(GENFLAGS) $(SAN_CFLAGS) $(LIBELF_CFLAGS) \ 39 -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \ 40 -I$(TOOLSINCDIR) -I$(APIDIR) -I$(OUTPUT) 41LDFLAGS += $(SAN_LDFLAGS) 42LDLIBS += $(LIBELF_LIBS) -lz -lrt -lpthread 43 44ifneq ($(LLVM),) 45# Silence some warnings when compiled with clang 46CFLAGS += -Wno-unused-command-line-argument 47endif 48 49# Check whether bpf cpu=v4 is supported or not by clang 50ifneq ($(shell $(CLANG) --target=bpf -mcpu=help 2>&1 | grep 'v4'),) 51CLANG_CPUV4 := 1 52endif 53 54# Order correspond to 'make run_tests' order 55TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \ 56 test_dev_cgroup \ 57 test_sock test_sockmap get_cgroup_id_user \ 58 test_cgroup_storage \ 59 test_tcpnotify_user test_sysctl \ 60 test_progs-no_alu32 61TEST_INST_SUBDIRS := no_alu32 62 63# Also test bpf-gcc, if present 64ifneq ($(BPF_GCC),) 65TEST_GEN_PROGS += test_progs-bpf_gcc 66TEST_INST_SUBDIRS += bpf_gcc 67endif 68 69ifneq ($(CLANG_CPUV4),) 70TEST_GEN_PROGS += test_progs-cpuv4 71TEST_INST_SUBDIRS += cpuv4 72endif 73 74TEST_GEN_FILES = test_lwt_ip_encap.bpf.o test_tc_edt.bpf.o 75TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c) 76 77# Order correspond to 'make run_tests' order 78TEST_PROGS := test_kmod.sh \ 79 test_xdp_redirect.sh \ 80 test_xdp_redirect_multi.sh \ 81 test_xdp_meta.sh \ 82 test_xdp_veth.sh \ 83 test_offload.py \ 84 test_sock_addr.sh \ 85 test_tunnel.sh \ 86 test_lwt_seg6local.sh \ 87 test_lirc_mode2.sh \ 88 test_skb_cgroup_id.sh \ 89 test_flow_dissector.sh \ 90 test_xdp_vlan_mode_generic.sh \ 91 test_xdp_vlan_mode_native.sh \ 92 test_lwt_ip_encap.sh \ 93 test_tcp_check_syncookie.sh \ 94 test_tc_tunnel.sh \ 95 test_tc_edt.sh \ 96 test_xdping.sh \ 97 test_bpftool_build.sh \ 98 test_bpftool.sh \ 99 test_bpftool_metadata.sh \ 100 test_doc_build.sh \ 101 test_xsk.sh \ 102 test_xdp_features.sh 103 104TEST_PROGS_EXTENDED := with_addr.sh \ 105 with_tunnels.sh ima_setup.sh verify_sig_setup.sh \ 106 test_xdp_vlan.sh test_bpftool.py 107 108# Compile but not part of 'make run_tests' 109TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \ 110 flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \ 111 test_lirc_mode2_user xdping test_cpp runqslower bench bpf_testmod.ko \ 112 xskxceiver xdp_redirect_multi xdp_synproxy veristat xdp_hw_metadata \ 113 xdp_features 114 115TEST_GEN_FILES += liburandom_read.so urandom_read sign-file uprobe_multi 116 117# Emit succinct information message describing current building step 118# $1 - generic step name (e.g., CC, LINK, etc); 119# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor]; 120# $3 - target (assumed to be file); only file name will be emitted; 121# $4 - optional extra arg, emitted as-is, if provided. 122ifeq ($(V),1) 123Q = 124msg = 125else 126Q = @ 127msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))"; 128MAKEFLAGS += --no-print-directory 129submake_extras := feature_display=0 130endif 131 132# override lib.mk's default rules 133OVERRIDE_TARGETS := 1 134override define CLEAN 135 $(call msg,CLEAN) 136 $(Q)$(RM) -r $(TEST_GEN_PROGS) 137 $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED) 138 $(Q)$(RM) -r $(TEST_GEN_FILES) 139 $(Q)$(RM) -r $(EXTRA_CLEAN) 140 $(Q)$(MAKE) -C bpf_testmod clean 141 $(Q)$(MAKE) docs-clean 142endef 143 144include ../lib.mk 145 146SCRATCH_DIR := $(OUTPUT)/tools 147BUILD_DIR := $(SCRATCH_DIR)/build 148INCLUDE_DIR := $(SCRATCH_DIR)/include 149BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a 150ifneq ($(CROSS_COMPILE),) 151HOST_BUILD_DIR := $(BUILD_DIR)/host 152HOST_SCRATCH_DIR := $(OUTPUT)/host-tools 153HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include 154else 155HOST_BUILD_DIR := $(BUILD_DIR) 156HOST_SCRATCH_DIR := $(SCRATCH_DIR) 157HOST_INCLUDE_DIR := $(INCLUDE_DIR) 158endif 159HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a 160RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids 161RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/ 162 163VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \ 164 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \ 165 ../../../../vmlinux \ 166 /sys/kernel/btf/vmlinux \ 167 /boot/vmlinux-$(shell uname -r) 168VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) 169ifeq ($(VMLINUX_BTF),) 170$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)") 171endif 172 173# Define simple and short `make test_progs`, `make test_sysctl`, etc targets 174# to build individual tests. 175# NOTE: Semicolon at the end is critical to override lib.mk's default static 176# rule for binaries. 177$(notdir $(TEST_GEN_PROGS) \ 178 $(TEST_GEN_PROGS_EXTENDED) \ 179 $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ; 180 181# sort removes libbpf duplicates when not cross-building 182MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \ 183 $(BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/bpftool \ 184 $(HOST_BUILD_DIR)/resolve_btfids \ 185 $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR)) 186$(MAKE_DIRS): 187 $(call msg,MKDIR,,$@) 188 $(Q)mkdir -p $@ 189 190$(OUTPUT)/%.o: %.c 191 $(call msg,CC,,$@) 192 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@ 193 194$(OUTPUT)/%:%.c 195 $(call msg,BINARY,,$@) 196 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@ 197 198# LLVM's ld.lld doesn't support all the architectures, so use it only on x86 199ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 riscv)) 200LLD := lld 201else 202LLD := ld 203endif 204 205# Filter out -static for liburandom_read.so and its dependent targets so that static builds 206# do not fail. Static builds leave urandom_read relying on system-wide shared libraries. 207$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c liburandom_read.map 208 $(call msg,LIB,,$@) 209 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \ 210 $(filter-out -static,$(CFLAGS) $(LDFLAGS)) \ 211 $(filter %.c,$^) $(filter-out -static,$(LDLIBS)) \ 212 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ 213 -Wl,--version-script=liburandom_read.map \ 214 -fPIC -shared -o $@ 215 216$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so 217 $(call msg,BINARY,,$@) 218 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \ 219 $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \ 220 -lurandom_read $(filter-out -static,$(LDLIBS)) -L$(OUTPUT) \ 221 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ 222 -Wl,-rpath=. -o $@ 223 224$(OUTPUT)/sign-file: ../../../../scripts/sign-file.c 225 $(call msg,SIGN-FILE,,$@) 226 $(Q)$(CC) $(shell $(PKG_CONFIG) --cflags libcrypto 2> /dev/null) \ 227 $< -o $@ \ 228 $(shell $(PKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto) 229 230$(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch]) 231 $(call msg,MOD,,$@) 232 $(Q)$(RM) bpf_testmod/bpf_testmod.ko # force re-compilation 233 $(Q)$(MAKE) $(submake_extras) RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) -C bpf_testmod 234 $(Q)cp bpf_testmod/bpf_testmod.ko $@ 235 236DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool 237ifneq ($(CROSS_COMPILE),) 238CROSS_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool 239TRUNNER_BPFTOOL := $(CROSS_BPFTOOL) 240USE_BOOTSTRAP := "" 241else 242TRUNNER_BPFTOOL := $(DEFAULT_BPFTOOL) 243USE_BOOTSTRAP := "bootstrap/" 244endif 245 246$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT) 247 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \ 248 OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF) \ 249 BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 250 BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf \ 251 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) \ 252 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS)' \ 253 EXTRA_LDFLAGS='$(SAN_LDFLAGS)' && \ 254 cp $(RUNQSLOWER_OUTPUT)runqslower $@ 255 256TEST_GEN_PROGS_EXTENDED += $(TRUNNER_BPFTOOL) 257 258$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ) 259 260TESTING_HELPERS := $(OUTPUT)/testing_helpers.o 261CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o 262UNPRIV_HELPERS := $(OUTPUT)/unpriv_helpers.o 263TRACE_HELPERS := $(OUTPUT)/trace_helpers.o 264JSON_WRITER := $(OUTPUT)/json_writer.o 265CAP_HELPERS := $(OUTPUT)/cap_helpers.o 266 267$(OUTPUT)/test_dev_cgroup: $(CGROUP_HELPERS) $(TESTING_HELPERS) 268$(OUTPUT)/test_skb_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) 269$(OUTPUT)/test_sock: $(CGROUP_HELPERS) $(TESTING_HELPERS) 270$(OUTPUT)/test_sock_addr: $(CGROUP_HELPERS) $(TESTING_HELPERS) 271$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS) 272$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS) 273$(OUTPUT)/get_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) 274$(OUTPUT)/test_cgroup_storage: $(CGROUP_HELPERS) $(TESTING_HELPERS) 275$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS) 276$(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TESTING_HELPERS) 277$(OUTPUT)/test_tag: $(TESTING_HELPERS) 278$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS) 279$(OUTPUT)/xdping: $(TESTING_HELPERS) 280$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS) 281$(OUTPUT)/test_maps: $(TESTING_HELPERS) 282$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) $(UNPRIV_HELPERS) 283$(OUTPUT)/xsk.o: $(BPFOBJ) 284 285BPFTOOL ?= $(DEFAULT_BPFTOOL) 286$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 287 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool 288 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 289 ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" \ 290 EXTRA_CFLAGS='-g $(OPT_FLAGS)' \ 291 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 292 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 293 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \ 294 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin 295 296ifneq ($(CROSS_COMPILE),) 297$(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 298 $(BPFOBJ) | $(BUILD_DIR)/bpftool 299 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 300 ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) \ 301 EXTRA_CFLAGS='-g $(OPT_FLAGS)' \ 302 OUTPUT=$(BUILD_DIR)/bpftool/ \ 303 LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/ \ 304 LIBBPF_DESTDIR=$(SCRATCH_DIR)/ \ 305 prefix= DESTDIR=$(SCRATCH_DIR)/ install-bin 306endif 307 308all: docs 309 310docs: 311 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \ 312 -f Makefile.docs \ 313 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 314 315docs-clean: 316 $(Q)$(MAKE) $(submake_extras) \ 317 -f Makefile.docs \ 318 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 319 320$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 321 $(APIDIR)/linux/bpf.h \ 322 | $(BUILD_DIR)/libbpf 323 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \ 324 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS)' \ 325 EXTRA_LDFLAGS='$(SAN_LDFLAGS)' \ 326 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers 327 328ifneq ($(BPFOBJ),$(HOST_BPFOBJ)) 329$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 330 $(APIDIR)/linux/bpf.h \ 331 | $(HOST_BUILD_DIR)/libbpf 332 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \ 333 EXTRA_CFLAGS='-g $(OPT_FLAGS)' ARCH= CROSS_COMPILE= \ 334 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 335 CC="$(HOSTCC)" LD="$(HOSTLD)" \ 336 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers 337endif 338 339$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR) 340ifeq ($(VMLINUX_H),) 341 $(call msg,GEN,,$@) 342 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@ 343else 344 $(call msg,CP,,$@) 345 $(Q)cp "$(VMLINUX_H)" $@ 346endif 347 348$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \ 349 $(TOOLSDIR)/bpf/resolve_btfids/main.c \ 350 $(TOOLSDIR)/lib/rbtree.c \ 351 $(TOOLSDIR)/lib/zalloc.c \ 352 $(TOOLSDIR)/lib/string.c \ 353 $(TOOLSDIR)/lib/ctype.c \ 354 $(TOOLSDIR)/lib/str_error_r.c 355 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \ 356 CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \ 357 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \ 358 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ) 359 360# Get Clang's default includes on this system, as opposed to those seen by 361# '--target=bpf'. This fixes "missing" files on some architectures/distros, 362# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 363# 364# Use '-idirafter': Don't interfere with include mechanics except where the 365# build would have failed anyways. 366define get_sys_includes 367$(shell $(1) $(2) -v -E - </dev/null 2>&1 \ 368 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \ 369$(shell $(1) $(2) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') \ 370$(shell $(1) $(2) -dM -E - </dev/null | grep '__loongarch_grlen ' | awk '{printf("-D__BITS_PER_LONG=%d", $$3)}') 371endef 372 373# Determine target endianness. 374IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \ 375 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__') 376MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian) 377 378ifneq ($(CROSS_COMPILE),) 379CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_COMPILE:%-=%)) 380endif 381 382CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARCH)) 383BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ 384 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \ 385 -I$(abspath $(OUTPUT)/../usr/include) 386 387CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \ 388 -Wno-compare-distinct-pointer-types 389 390$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline 391$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline 392 393$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h 394$(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h 395 396# Build BPF object using Clang 397# $1 - input .c file 398# $2 - output .o file 399# $3 - CFLAGS 400define CLANG_BPF_BUILD_RULE 401 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 402 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v3 -o $2 403endef 404# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32 405define CLANG_NOALU32_BPF_BUILD_RULE 406 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 407 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v2 -o $2 408endef 409# Similar to CLANG_BPF_BUILD_RULE, but with cpu-v4 410define CLANG_CPUV4_BPF_BUILD_RULE 411 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 412 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v4 -o $2 413endef 414# Build BPF object using GCC 415define GCC_BPF_BUILD_RULE 416 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2) 417 $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2 418endef 419 420SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c 421 422LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \ 423 linked_vars.skel.h linked_maps.skel.h \ 424 test_subskeleton.skel.h test_subskeleton_lib.skel.h \ 425 test_usdt.skel.h 426 427LSKELS := fentry_test.c fexit_test.c fexit_sleep.c atomics.c \ 428 trace_printk.c trace_vprintk.c map_ptr_kern.c \ 429 core_kern.c core_kern_overflow.c test_ringbuf.c \ 430 test_ringbuf_map_key.c 431 432# Generate both light skeleton and libbpf skeleton for these 433LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test.c \ 434 kfunc_call_test_subprog.c 435SKEL_BLACKLIST += $$(LSKELS) 436 437test_static_linked.skel.h-deps := test_static_linked1.bpf.o test_static_linked2.bpf.o 438linked_funcs.skel.h-deps := linked_funcs1.bpf.o linked_funcs2.bpf.o 439linked_vars.skel.h-deps := linked_vars1.bpf.o linked_vars2.bpf.o 440linked_maps.skel.h-deps := linked_maps1.bpf.o linked_maps2.bpf.o 441# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file 442# but that's created as a side-effect of the skel.h generation. 443test_subskeleton.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o test_subskeleton.bpf.o 444test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o 445test_usdt.skel.h-deps := test_usdt.bpf.o test_usdt_multispec.bpf.o 446xsk_xdp_progs.skel.h-deps := xsk_xdp_progs.bpf.o 447xdp_hw_metadata.skel.h-deps := xdp_hw_metadata.bpf.o 448xdp_features.skel.h-deps := xdp_features.bpf.o 449 450LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps))) 451 452# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on 453# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES. 454# Parameters: 455# $1 - test runner base binary name (e.g., test_progs) 456# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, gcc-bpf, etc) 457define DEFINE_TEST_RUNNER 458 459TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2 460TRUNNER_BINARY := $1$(if $2,-)$2 461TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \ 462 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c))) 463TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \ 464 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES))) 465TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES)) 466TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h 467TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c)) 468TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.bpf.o, $$(TRUNNER_BPF_SRCS)) 469TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \ 470 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\ 471 $$(TRUNNER_BPF_SRCS))) 472TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA)) 473TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS)) 474TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS) 475 476# Evaluate rules now with extra TRUNNER_XXX variables above already defined 477$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2)) 478 479endef 480 481# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and 482# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with: 483# $1 - test runner base binary name (e.g., test_progs) 484# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, gcc-bpf, etc) 485define DEFINE_TEST_RUNNER_RULES 486 487ifeq ($($(TRUNNER_OUTPUT)-dir),) 488$(TRUNNER_OUTPUT)-dir := y 489$(TRUNNER_OUTPUT): 490 $$(call msg,MKDIR,,$$@) 491 $(Q)mkdir -p $$@ 492endif 493 494# ensure we set up BPF objects generation rule just once for a given 495# input/output directory combination 496ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),) 497$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y 498$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o: \ 499 $(TRUNNER_BPF_PROGS_DIR)/%.c \ 500 $(TRUNNER_BPF_PROGS_DIR)/*.h \ 501 $$(INCLUDE_DIR)/vmlinux.h \ 502 $(wildcard $(BPFDIR)/bpf_*.h) \ 503 $(wildcard $(BPFDIR)/*.bpf.h) \ 504 | $(TRUNNER_OUTPUT) $$(BPFOBJ) 505 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \ 506 $(TRUNNER_BPF_CFLAGS)) 507 508$(TRUNNER_BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 509 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 510 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$< 511 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o) 512 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o) 513 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o) 514 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$@ 515 $(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$(@:.skel.h=.subskel.h) 516 517$(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 518 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 519 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$< 520 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o) 521 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o) 522 $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o) 523 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@ 524 525$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_BPF_OBJS) $(BPFTOOL) | $(TRUNNER_OUTPUT) 526 $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.bpf.o)) 527 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps)) 528 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o) 529 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o) 530 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o) 531 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 532 $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@ 533 $(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h) 534endif 535 536# ensure we set up tests.h header generation rule just once 537ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),) 538$(TRUNNER_TESTS_DIR)-tests-hdr := y 539$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c 540 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@) 541 $$(shell (echo '/* Generated header, do not edit */'; \ 542 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \ 543 $(TRUNNER_TESTS_DIR)/*.c | sort ; \ 544 ) > $$@) 545endif 546 547# compile individual test files 548# Note: we cd into output directory to ensure embedded BPF object is found 549$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \ 550 $(TRUNNER_TESTS_DIR)/%.c \ 551 $(TRUNNER_EXTRA_HDRS) \ 552 $(TRUNNER_BPF_OBJS) \ 553 $(TRUNNER_BPF_SKELS) \ 554 $(TRUNNER_BPF_LSKELS) \ 555 $(TRUNNER_BPF_SKELS_LINKED) \ 556 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 557 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@) 558 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F) 559 560$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \ 561 %.c \ 562 $(TRUNNER_EXTRA_HDRS) \ 563 $(TRUNNER_TESTS_HDR) \ 564 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 565 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@) 566 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@ 567 568# non-flavored in-srctree builds receive special treatment, in particular, we 569# do not need to copy extra resources (see e.g. test_btf_dump_case()) 570$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT) 571ifneq ($2:$(OUTPUT),:$(shell pwd)) 572 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES)) 573 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/ 574endif 575 576$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \ 577 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \ 578 $(RESOLVE_BTFIDS) \ 579 $(TRUNNER_BPFTOOL) \ 580 | $(TRUNNER_BINARY)-extras 581 $$(call msg,BINARY,,$$@) 582 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@ 583 $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.bpf.o $$@ 584 $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/$(USE_BOOTSTRAP)bpftool \ 585 $(OUTPUT)/$(if $2,$2/)bpftool 586 587endef 588 589# Define test_progs test runner. 590TRUNNER_TESTS_DIR := prog_tests 591TRUNNER_BPF_PROGS_DIR := progs 592TRUNNER_EXTRA_SOURCES := test_progs.c \ 593 cgroup_helpers.c \ 594 trace_helpers.c \ 595 network_helpers.c \ 596 testing_helpers.c \ 597 btf_helpers.c \ 598 cap_helpers.c \ 599 unpriv_helpers.c \ 600 netlink_helpers.c \ 601 test_loader.c \ 602 xsk.c \ 603 disasm.c \ 604 json_writer.c \ 605 flow_dissector_load.h \ 606 ip_check_defrag_frags.h 607TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \ 608 $(OUTPUT)/liburandom_read.so \ 609 $(OUTPUT)/xdp_synproxy \ 610 $(OUTPUT)/sign-file \ 611 $(OUTPUT)/uprobe_multi \ 612 ima_setup.sh \ 613 verify_sig_setup.sh \ 614 $(wildcard progs/btf_dump_test_case_*.c) \ 615 $(wildcard progs/*.bpf.o) 616TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE 617TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS 618$(eval $(call DEFINE_TEST_RUNNER,test_progs)) 619 620# Define test_progs-no_alu32 test runner. 621TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE 622TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) 623$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32)) 624 625# Define test_progs-cpuv4 test runner. 626ifneq ($(CLANG_CPUV4),) 627TRUNNER_BPF_BUILD_RULE := CLANG_CPUV4_BPF_BUILD_RULE 628TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) 629$(eval $(call DEFINE_TEST_RUNNER,test_progs,cpuv4)) 630endif 631 632# Define test_progs BPF-GCC-flavored test runner. 633ifneq ($(BPF_GCC),) 634TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE 635TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc,) 636$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc)) 637endif 638 639# Define test_maps test runner. 640TRUNNER_TESTS_DIR := map_tests 641TRUNNER_BPF_PROGS_DIR := progs 642TRUNNER_EXTRA_SOURCES := test_maps.c 643TRUNNER_EXTRA_FILES := 644TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built) 645TRUNNER_BPF_CFLAGS := 646$(eval $(call DEFINE_TEST_RUNNER,test_maps)) 647 648# Define test_verifier test runner. 649# It is much simpler than test_maps/test_progs and sufficiently different from 650# them (e.g., test.h is using completely pattern), that it's worth just 651# explicitly defining all the rules explicitly. 652verifier/tests.h: verifier/*.c 653 $(shell ( cd verifier/; \ 654 echo '/* Generated header, do not edit */'; \ 655 echo '#ifdef FILL_ARRAY'; \ 656 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \ 657 echo '#endif' \ 658 ) > verifier/tests.h) 659$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT) 660 $(call msg,BINARY,,$@) 661 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 662 663# Include find_bit.c to compile xskxceiver. 664EXTRA_SRC := $(TOOLSDIR)/lib/find_bit.c 665$(OUTPUT)/xskxceiver: $(EXTRA_SRC) xskxceiver.c xskxceiver.h $(OUTPUT)/xsk.o $(OUTPUT)/xsk_xdp_progs.skel.h $(BPFOBJ) | $(OUTPUT) 666 $(call msg,BINARY,,$@) 667 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 668 669$(OUTPUT)/xdp_hw_metadata: xdp_hw_metadata.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xdp_hw_metadata.skel.h | $(OUTPUT) 670 $(call msg,BINARY,,$@) 671 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 672 673$(OUTPUT)/xdp_features: xdp_features.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xdp_features.skel.h | $(OUTPUT) 674 $(call msg,BINARY,,$@) 675 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 676 677# Make sure we are able to include and link libbpf against c++. 678$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ) 679 $(call msg,CXX,,$@) 680 $(Q)$(CXX) $(CFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@ 681 682# Benchmark runner 683$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ) 684 $(call msg,CC,,$@) 685 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@ 686$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h 687$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h 688$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \ 689 $(OUTPUT)/perfbuf_bench.skel.h 690$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h 691$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h 692$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h 693$(OUTPUT)/bench_bpf_hashmap_full_update.o: $(OUTPUT)/bpf_hashmap_full_update_bench.skel.h 694$(OUTPUT)/bench_local_storage.o: $(OUTPUT)/local_storage_bench.skel.h 695$(OUTPUT)/bench_local_storage_rcu_tasks_trace.o: $(OUTPUT)/local_storage_rcu_tasks_trace_bench.skel.h 696$(OUTPUT)/bench_local_storage_create.o: $(OUTPUT)/bench_local_storage_create.skel.h 697$(OUTPUT)/bench_bpf_hashmap_lookup.o: $(OUTPUT)/bpf_hashmap_lookup.skel.h 698$(OUTPUT)/bench_htab_mem.o: $(OUTPUT)/htab_mem_bench.skel.h 699$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ) 700$(OUTPUT)/bench: LDLIBS += -lm 701$(OUTPUT)/bench: $(OUTPUT)/bench.o \ 702 $(TESTING_HELPERS) \ 703 $(TRACE_HELPERS) \ 704 $(CGROUP_HELPERS) \ 705 $(OUTPUT)/bench_count.o \ 706 $(OUTPUT)/bench_rename.o \ 707 $(OUTPUT)/bench_trigger.o \ 708 $(OUTPUT)/bench_ringbufs.o \ 709 $(OUTPUT)/bench_bloom_filter_map.o \ 710 $(OUTPUT)/bench_bpf_loop.o \ 711 $(OUTPUT)/bench_strncmp.o \ 712 $(OUTPUT)/bench_bpf_hashmap_full_update.o \ 713 $(OUTPUT)/bench_local_storage.o \ 714 $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o \ 715 $(OUTPUT)/bench_bpf_hashmap_lookup.o \ 716 $(OUTPUT)/bench_local_storage_create.o \ 717 $(OUTPUT)/bench_htab_mem.o \ 718 # 719 $(call msg,BINARY,,$@) 720 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ 721 722$(OUTPUT)/veristat.o: $(BPFOBJ) 723$(OUTPUT)/veristat: $(OUTPUT)/veristat.o 724 $(call msg,BINARY,,$@) 725 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ 726 727$(OUTPUT)/uprobe_multi: uprobe_multi.c 728 $(call msg,BINARY,,$@) 729 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ 730 731EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \ 732 prog_tests/tests.h map_tests/tests.h verifier/tests.h \ 733 feature bpftool \ 734 $(addprefix $(OUTPUT)/,*.o *.skel.h *.lskel.h *.subskel.h \ 735 no_alu32 cpuv4 bpf_gcc bpf_testmod.ko \ 736 liburandom_read.so) 737 738.PHONY: docs docs-clean 739 740# Delete partially updated (corrupted) files on error 741.DELETE_ON_ERROR: 742 743DEFAULT_INSTALL_RULE := $(INSTALL_RULE) 744override define INSTALL_RULE 745 $(DEFAULT_INSTALL_RULE) 746 @for DIR in $(TEST_INST_SUBDIRS); do \ 747 mkdir -p $(INSTALL_PATH)/$$DIR; \ 748 rsync -a $(OUTPUT)/$$DIR/*.bpf.o $(INSTALL_PATH)/$$DIR;\ 749 done 750endef 751