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 \ 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 xdpxceiver xdp_redirect_multi 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 $@ 170 171$(OUTPUT)/urandom_read: urandom_read.c 172 $(call msg,BINARY,,$@) 173 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $< $(LDLIBS) -Wl,--build-id=sha1 -o $@ 174 175$(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch]) 176 $(call msg,MOD,,$@) 177 $(Q)$(RM) bpf_testmod/bpf_testmod.ko # force re-compilation 178 $(Q)$(MAKE) $(submake_extras) -C bpf_testmod 179 $(Q)cp bpf_testmod/bpf_testmod.ko $@ 180 181DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool 182 183$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT) 184 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \ 185 OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF) \ 186 BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 187 BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf \ 188 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) && \ 189 cp $(RUNQSLOWER_OUTPUT)runqslower $@ 190 191TEST_GEN_PROGS_EXTENDED += $(DEFAULT_BPFTOOL) 192 193$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ) 194 195CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o 196TESTING_HELPERS := $(OUTPUT)/testing_helpers.o 197TRACE_HELPERS := $(OUTPUT)/trace_helpers.o 198CAP_HELPERS := $(OUTPUT)/cap_helpers.o 199 200$(OUTPUT)/test_dev_cgroup: $(CGROUP_HELPERS) $(TESTING_HELPERS) 201$(OUTPUT)/test_skb_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) 202$(OUTPUT)/test_sock: $(CGROUP_HELPERS) $(TESTING_HELPERS) 203$(OUTPUT)/test_sock_addr: $(CGROUP_HELPERS) $(TESTING_HELPERS) 204$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS) 205$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS) 206$(OUTPUT)/get_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) 207$(OUTPUT)/test_cgroup_storage: $(CGROUP_HELPERS) $(TESTING_HELPERS) 208$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS) 209$(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TESTING_HELPERS) 210$(OUTPUT)/test_tag: $(TESTING_HELPERS) 211$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS) 212$(OUTPUT)/xdping: $(TESTING_HELPERS) 213$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS) 214$(OUTPUT)/test_maps: $(TESTING_HELPERS) 215$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) 216 217BPFTOOL ?= $(DEFAULT_BPFTOOL) 218$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 219 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool 220 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 221 ARCH= CROSS_COMPILE= CC=$(HOSTCC) LD=$(HOSTLD) \ 222 EXTRA_CFLAGS='-g -O0' \ 223 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 224 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 225 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \ 226 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin 227 228all: docs 229 230docs: 231 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \ 232 -f Makefile.docs \ 233 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 234 235docs-clean: 236 $(Q)$(MAKE) $(submake_extras) \ 237 -f Makefile.docs \ 238 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 239 240$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 241 $(APIDIR)/linux/bpf.h \ 242 | $(BUILD_DIR)/libbpf 243 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \ 244 EXTRA_CFLAGS='-g -O0' \ 245 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers 246 247ifneq ($(BPFOBJ),$(HOST_BPFOBJ)) 248$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 249 $(APIDIR)/linux/bpf.h \ 250 | $(HOST_BUILD_DIR)/libbpf 251 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \ 252 EXTRA_CFLAGS='-g -O0' ARCH= CROSS_COMPILE= \ 253 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ CC=$(HOSTCC) LD=$(HOSTLD) \ 254 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers 255endif 256 257$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR) 258ifeq ($(VMLINUX_H),) 259 $(call msg,GEN,,$@) 260 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@ 261else 262 $(call msg,CP,,$@) 263 $(Q)cp "$(VMLINUX_H)" $@ 264endif 265 266$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \ 267 $(TOOLSDIR)/bpf/resolve_btfids/main.c \ 268 $(TOOLSDIR)/lib/rbtree.c \ 269 $(TOOLSDIR)/lib/zalloc.c \ 270 $(TOOLSDIR)/lib/string.c \ 271 $(TOOLSDIR)/lib/ctype.c \ 272 $(TOOLSDIR)/lib/str_error_r.c 273 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \ 274 CC=$(HOSTCC) LD=$(HOSTLD) AR=$(HOSTAR) \ 275 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \ 276 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ) 277 278# Get Clang's default includes on this system, as opposed to those seen by 279# '-target bpf'. This fixes "missing" files on some architectures/distros, 280# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 281# 282# Use '-idirafter': Don't interfere with include mechanics except where the 283# build would have failed anyways. 284define get_sys_includes 285$(shell $(1) -v -E - </dev/null 2>&1 \ 286 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \ 287$(shell $(1) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') 288endef 289 290# Determine target endianness. 291IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \ 292 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__') 293MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian) 294 295CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG)) 296BPF_CFLAGS = -g -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ 297 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \ 298 -I$(abspath $(OUTPUT)/../usr/include) 299 300CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \ 301 -Wno-compare-distinct-pointer-types 302 303$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline 304$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline 305 306$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h 307 308# Build BPF object using Clang 309# $1 - input .c file 310# $2 - output .o file 311# $3 - CFLAGS 312define CLANG_BPF_BUILD_RULE 313 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 314 $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v3 -o $2 315endef 316# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32 317define CLANG_NOALU32_BPF_BUILD_RULE 318 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 319 $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v2 -o $2 320endef 321# Build BPF object using GCC 322define GCC_BPF_BUILD_RULE 323 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2) 324 $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2 325endef 326 327SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c 328 329LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \ 330 linked_vars.skel.h linked_maps.skel.h \ 331 test_subskeleton.skel.h test_subskeleton_lib.skel.h 332 333# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file 334# but that's created as a side-effect of the skel.h generation. 335test_subskeleton.skel.h-deps := test_subskeleton_lib2.o test_subskeleton_lib.o test_subskeleton.o 336test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.o test_subskeleton_lib.o 337 338LSKELS := kfunc_call_test.c fentry_test.c fexit_test.c fexit_sleep.c \ 339 test_ringbuf.c atomics.c trace_printk.c trace_vprintk.c \ 340 map_ptr_kern.c core_kern.c core_kern_overflow.c 341# Generate both light skeleton and libbpf skeleton for these 342LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test_subprog.c 343SKEL_BLACKLIST += $$(LSKELS) 344 345test_static_linked.skel.h-deps := test_static_linked1.o test_static_linked2.o 346linked_funcs.skel.h-deps := linked_funcs1.o linked_funcs2.o 347linked_vars.skel.h-deps := linked_vars1.o linked_vars2.o 348linked_maps.skel.h-deps := linked_maps1.o linked_maps2.o 349 350LINKED_BPF_SRCS := $(patsubst %.o,%.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps))) 351 352# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on 353# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES. 354# Parameters: 355# $1 - test runner base binary name (e.g., test_progs) 356# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc) 357define DEFINE_TEST_RUNNER 358 359TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2 360TRUNNER_BINARY := $1$(if $2,-)$2 361TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \ 362 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c))) 363TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \ 364 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES))) 365TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES)) 366TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h 367TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c)) 368TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, $$(TRUNNER_BPF_SRCS)) 369TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \ 370 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\ 371 $$(TRUNNER_BPF_SRCS))) 372TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA)) 373TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS)) 374TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS) 375 376# Evaluate rules now with extra TRUNNER_XXX variables above already defined 377$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2)) 378 379endef 380 381# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and 382# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with: 383# $1 - test runner base binary name (e.g., test_progs) 384# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc) 385define DEFINE_TEST_RUNNER_RULES 386 387ifeq ($($(TRUNNER_OUTPUT)-dir),) 388$(TRUNNER_OUTPUT)-dir := y 389$(TRUNNER_OUTPUT): 390 $$(call msg,MKDIR,,$$@) 391 $(Q)mkdir -p $$@ 392endif 393 394# ensure we set up BPF objects generation rule just once for a given 395# input/output directory combination 396ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),) 397$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y 398$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.o: \ 399 $(TRUNNER_BPF_PROGS_DIR)/%.c \ 400 $(TRUNNER_BPF_PROGS_DIR)/*.h \ 401 $$(INCLUDE_DIR)/vmlinux.h \ 402 $(wildcard $(BPFDIR)/bpf_*.h) \ 403 | $(TRUNNER_OUTPUT) $$(BPFOBJ) 404 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \ 405 $(TRUNNER_BPF_CFLAGS)) 406 407$(TRUNNER_BPF_SKELS): %.skel.h: %.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 408 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 409 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$< 410 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o) 411 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o) 412 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o) 413 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.o=)) > $$@ 414 $(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.o=)) > $$(@:.skel.h=.subskel.h) 415 416$(TRUNNER_BPF_LSKELS): %.lskel.h: %.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 417 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 418 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$< 419 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o) 420 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o) 421 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o) 422 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.linked3.o) name $$(notdir $$(<:.o=_lskel)) > $$@ 423 424$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_BPF_OBJS) $(BPFTOOL) | $(TRUNNER_OUTPUT) 425 $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.o)) 426 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps)) 427 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o) 428 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o) 429 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o) 430 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 431 $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@ 432 $(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h) 433endif 434 435# ensure we set up tests.h header generation rule just once 436ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),) 437$(TRUNNER_TESTS_DIR)-tests-hdr := y 438$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c 439 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@) 440 $$(shell (echo '/* Generated header, do not edit */'; \ 441 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \ 442 $(TRUNNER_TESTS_DIR)/*.c | sort ; \ 443 ) > $$@) 444endif 445 446# compile individual test files 447# Note: we cd into output directory to ensure embedded BPF object is found 448$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \ 449 $(TRUNNER_TESTS_DIR)/%.c \ 450 $(TRUNNER_EXTRA_HDRS) \ 451 $(TRUNNER_BPF_OBJS) \ 452 $(TRUNNER_BPF_SKELS) \ 453 $(TRUNNER_BPF_LSKELS) \ 454 $(TRUNNER_BPF_SKELS_LINKED) \ 455 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 456 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@) 457 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F) 458 459$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \ 460 %.c \ 461 $(TRUNNER_EXTRA_HDRS) \ 462 $(TRUNNER_TESTS_HDR) \ 463 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 464 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@) 465 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@ 466 467# non-flavored in-srctree builds receive special treatment, in particular, we 468# do not need to copy extra resources (see e.g. test_btf_dump_case()) 469$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT) 470ifneq ($2:$(OUTPUT),:$(shell pwd)) 471 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES)) 472 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/ 473endif 474 475$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \ 476 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \ 477 $(RESOLVE_BTFIDS) \ 478 | $(TRUNNER_BINARY)-extras 479 $$(call msg,BINARY,,$$@) 480 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@ 481 $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.o $$@ 482 $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/bootstrap/bpftool $(if $2,$2/)bpftool 483 484endef 485 486# Define test_progs test runner. 487TRUNNER_TESTS_DIR := prog_tests 488TRUNNER_BPF_PROGS_DIR := progs 489TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c \ 490 network_helpers.c testing_helpers.c \ 491 btf_helpers.c flow_dissector_load.h \ 492 cap_helpers.c 493TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \ 494 ima_setup.sh \ 495 $(wildcard progs/btf_dump_test_case_*.c) 496TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE 497TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS 498$(eval $(call DEFINE_TEST_RUNNER,test_progs)) 499 500# Define test_progs-no_alu32 test runner. 501TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE 502TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) 503$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32)) 504 505# Define test_progs BPF-GCC-flavored test runner. 506ifneq ($(BPF_GCC),) 507TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE 508TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc) 509$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc)) 510endif 511 512# Define test_maps test runner. 513TRUNNER_TESTS_DIR := map_tests 514TRUNNER_BPF_PROGS_DIR := progs 515TRUNNER_EXTRA_SOURCES := test_maps.c 516TRUNNER_EXTRA_FILES := 517TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built) 518TRUNNER_BPF_CFLAGS := 519$(eval $(call DEFINE_TEST_RUNNER,test_maps)) 520 521# Define test_verifier test runner. 522# It is much simpler than test_maps/test_progs and sufficiently different from 523# them (e.g., test.h is using completely pattern), that it's worth just 524# explicitly defining all the rules explicitly. 525verifier/tests.h: verifier/*.c 526 $(shell ( cd verifier/; \ 527 echo '/* Generated header, do not edit */'; \ 528 echo '#ifdef FILL_ARRAY'; \ 529 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \ 530 echo '#endif' \ 531 ) > verifier/tests.h) 532$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT) 533 $(call msg,BINARY,,$@) 534 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 535 536# Make sure we are able to include and link libbpf against c++. 537$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ) 538 $(call msg,CXX,,$@) 539 $(Q)$(CXX) $(CFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@ 540 541# Benchmark runner 542$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ) 543 $(call msg,CC,,$@) 544 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@ 545$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h 546$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h 547$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \ 548 $(OUTPUT)/perfbuf_bench.skel.h 549$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h 550$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h 551$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h 552$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ) 553$(OUTPUT)/bench: LDLIBS += -lm 554$(OUTPUT)/bench: $(OUTPUT)/bench.o \ 555 $(TESTING_HELPERS) \ 556 $(TRACE_HELPERS) \ 557 $(OUTPUT)/bench_count.o \ 558 $(OUTPUT)/bench_rename.o \ 559 $(OUTPUT)/bench_trigger.o \ 560 $(OUTPUT)/bench_ringbufs.o \ 561 $(OUTPUT)/bench_bloom_filter_map.o \ 562 $(OUTPUT)/bench_bpf_loop.o \ 563 $(OUTPUT)/bench_strncmp.o 564 $(call msg,BINARY,,$@) 565 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ 566 567EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \ 568 prog_tests/tests.h map_tests/tests.h verifier/tests.h \ 569 feature bpftool \ 570 $(addprefix $(OUTPUT)/,*.o *.skel.h *.lskel.h *.subskel.h no_alu32 bpf_gcc bpf_testmod.ko) 571 572.PHONY: docs docs-clean 573