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